Garden landscape lamp cleaning device

The invention discloses a garden landscape lamp cleaning device, and belongs to the technical field of landscape lamp cleaning, the garden landscape lamp cleaning device comprises a first fixing disc and a second fixing disc which are arranged in the vertical direction, the first fixing disc and the second fixing disc are connected through a rotating shaft, and the inner side of the first fixing disc and the inner side of the second fixing disc are elastically connected with pressing plates; a first spring is fixedly connected between the first fixed disc and the second fixed disc; through alternate extrusion of two limiting plates on a rotating shaft and sliding rods on a first fixing disc and a second fixing disc, the first fixing disc and the second fixing disc can be alternately promoted to move upwards in cooperation with use of a first spring, and in the moving process, cleaning liquid in grooves is squeezed out through spraying holes by means of a sealing plate; and in the cleaning ...

Dihalo propene compound, and preparation and use thereof

The invention discloses a dihalogenated propylene compound shown in the general formula (I), in which R<1> is a alkyl having 1 to 5 carbon atoms, a phenyl or a substitutional phenyl; R<2> is an alkyl having 1 to 5 carbon atoms, or a halogenated alkyl having 1 to 5 carbon atoms; R<3> is hydrogen, halogen, a alkyl having 1 to 3 carbon atoms, an alkoxylate having 1 to 3 carbon atoms , a nitryl, a cyano, a thiocyanato, a trifluoromethyl sulfonamide, or a trifluoromethyl sulfinic group; R<4> is halogen, a alkyl having 2 to 4 carbon atoms, a cyano, or a nitryl; X is halogen, n is 2-4, and m is 2-4. The invention also discloses the method for preparing the dihalogenated propylene compound. The dihalogenated propylene compound provided by the invention has excellent effect on prevention and control of pest insects, so that the compound can be used to prepare pesticides in the field of agriculture and gardening, and has the advantages of high efficiency, low toxicity and environmental compatibility ...

Preparation method of S-type apremilast

The invention discloses a preparation method of apremilast (+)-2-[1-(3-ethoxy-4-methoxyphenyl)-2-mesylethyl]-4-acetamidoisoindolinyl-1,3-dione. The method comprises the following steps: (1) converting a compound 1-(3-ethoxy-4-methoxyphenyl)-2-(methanesulfonyl)ethylamine racemate disclosed as Formula (II) into a salification substance disclosed as Formula (III) by using a resolving agent; and (2) connecting the compound disclosed as Formula (III) with 3-acetamidophthalic anhydride to obtain the compound disclosed as Formula (I). The method can be utilized to obtain the stable apremilast acceptable finished product, has the advantages of mild technological conditions, simple after-treatment, high purity and low reaction cost, and can easily implement industrial production.

Preparation method of new crystal form tapentadol hydrochloride

The invention discloses a preparation method of new crystal form tapentadol hydrochloride, which comprises the following steps of (1) converting (2R, 3R)-3-(3-methoxyphenyl)-N,N,2-trimethyl-amylamine hydrochloride by use of a demethylation reagent into the formula (III): (-)-(1R, 2R)-3-(3-dimethylamino-1-ethyl-2-methylphenyl)phenol; (2) salifying the compound of formula (III) with hydrochloric acid in a mixed solvent of acetonitrile and isopropyl alcohol to obtain a compound of formula (I): (-)-(1R, 2R)-3-(3-dimethylamino-1-ethyl-2-methylphenyl)phenol hydrochloride. By adopting the method disclosed by the invention, stable new crystal form tapentadol hydrochloride can be obtained; moreover, the process conditions are mild, the after-treatment is simple, the purity is high, the reaction cost is low, and industrial production is easy to realize.

Dihalo propene compound, and preparation and use thereof

The invention discloses a dihalogenated propylene compound shown in the general formula (I), in which R<1> is a alkyl having 1 to 5 carbon atoms, a phenyl or a substitutional phenyl; R<2> is an alkyl having 1 to 5 carbon atoms, or a halogenated alkyl having 1 to 5 carbon atoms; R<3> is hydrogen, halogen, a alkyl having 1 to 3 carbon atoms, an alkoxylate having 1 to 3 carbon atoms , a nitryl, a cyano, a thiocyanato, a trifluoromethyl sulfonamide, or a trifluoromethyl sulfinic group; R<4> is halogen, a alkyl having 2 to 4 carbon atoms, a cyano, or a nitryl; X is halogen, n is 2-4, and m is 2-4.The invention also discloses the method for preparing the dihalogenated propylene compound. The dihalogenated propylene compound provided by the invention has excellent effect on prevention and control of pest insects, so that the compound can be used to prepare pesticides in the field of agriculture and gardening, and has the advantages of high efficiency, low toxicity and environmental compatibility ...

Vinyl cyanide compounds, preparation and application thereof

The present invention discloses an acrylonitrile compound, a preparation method thereof, and a pest prevention and curing agent with the compound as an active constituent. The compound has structural characteristics as shown in Formula (I). In the preparation method, under the condition with alkaline, an organic solvent at the temperature between minus 10 DEG C and 150 DEG C is used for the reaction between benzofuran acyl chloride or pyrazole acyl chloride and substituted benzyl cyanide, so as to produce an intermediate, the produced intermediate reacts with acyl chloride, and the (I) can be separated. The compound can be used as an active constituent in a pest prevention and curing agent. The present invention has the advantages that the compound has excellent prevention and curing effects on harmful insects and acarus category, the activity of the compound is high, the consumption is low and the security is excellent.

Beam -pumping unit transmission hair pigtail maintenance device

The utility model belongs to the technical field of the maintenance of beam -pumping unit transmission hair pigtail, a beam -pumping unit transmission hair pigtail maintenance device is provided, including semicircle hooped column form card strip and butter filling device, butter filling device fixed connection is in the upper end of semicircle hooped column form card strip, butter filling device includes grease gun body, end cover, piston rod, piston and pressure disk, the grease gun body links firmly with the upper end of semicircle hooped column form card strip, the grease gun body is the slope setting and the lower extreme is provided with butter filling pipe, the end cover links to each other with the other end screw thread of grease gun body, the piston rod is coaxial running through in the end cover, hinge joint is in the one end of piston rod, the other end at the piston rod is connected to the pressure disk, just movably setting is laminated in the grease gun body with the inner ...

Balanced adjustment tool of beam -pumping unit

The utility model belongs to the technical field of the beam -pumping unit balance adjustment, a balanced adjustment tool of beam -pumping unit is provided, control " returning " font support frame that removes including overlapping to establish at the outside crank of pumping unit that just can follow of crank of pumping unit, be provided with a plurality of slider that is the longitudinal symmetry and sets up between support frame and the crank of pumping unit, rotationally be connected with the screw on the terminal surface of slider, the screw runs through and links to each other in the support frame and with the support frame screw thread, be provided with on another terminal surface of slider and go up tooth's socket matched with a plurality of tooth head with crank of pumping unit, one side of support frame is provided with the horizontal jack that is the longitudinal symmetry and sets up, the one end of horizontal jack links to each other with the support frame is fixed, and the ...

Disinsection acaricidal cream and aqueous emulsion containing alpha-cyano-N-benzyl pyrazole acidamide compound

The invention discloses a composite which is used for killing pests and mites, contains alpha-cyano-N-phenmethyl pyrazole amide compounds; the composite takes alpha-cyano-N-phenmethyl pyrazole amide compounds of the formula (I) and pyrethroid compounds as the active ingredients. The composite has the characteristics of killing pests and mites, and synergy to the tetranychus mites.

Pyrazolecarboxamide compounds, intermediate thereof and pest control chemicals with the same as active component

Method for preparing macitentan

The invention discloses a method for preparing macitentan. The method comprises the following steps: (1) carrying out a substitution reaction between a compound N-propanesulfonamide of a formula (II) and a compound 5-(4-bromophenyl)-4,6-dichloropyrimidine of a formula (III) so as to convert into a compound of a formula (IV); (2) carrying out a substitution reaction between the compound of the formula (IV) and a compound of a formula (V) in the presence of a strong base, thereby obtaining a compound of a formula (VI); and (3) carrying out a substitution reaction between the compound of the formula (VI) and a compound of a formula (VII) in the presence of a strong base, thereby obtaining the compound (macitentan) of the formula (I). The process conditions of the method for preparing macitentan are mild, the reaction time is greatly shortened, the after-treatment is simple, the purity is high, the reaction cost is low, and the industrial production is easily realized.

Quick outer ware that pulls out of crank of pumping unit

The utility model belongs to the technical field of oil field mechanical equipment, a quick outer ware that pulls out of crank of pumping unit is provided, including bottom plate, jack and a pair of drag hook, the jack passes through fixing device to be fixed on the bottom plate, fixing device establishes at the outside fixed plate of jack including the cover, a pair of dead lever of fixedly connected with on the up end of fixed plate, dead lever one end is fixed through nut and bottom plate after running through the bottom plate mutually, a pair of drag hook is fixed on the lower terminal surface of bottom plate with being bilateral symmetry, drag hook one end outside -in is provided with and buckles, the utility model has the advantages of can dismantle crank of pumping unit steadily, safely, reduce workman intensity of labour, improve production efficiency to can fully guarantee workman's person and equipment safety.

Construction method of prefabricated laminated slab for fabricated building

The invention relates to the technical field of prefabricated laminated slab construction, in particular to a construction method of a prefabricated laminated slab for a fabricated building. The laminated slab comprises a laminated slab body, a plurality of first limiting blocks, a plurality of second limiting blocks and a pair of supporting assemblies. The pre-fixing work between the two laminated slab bodies is completed through the arranged first limiting blocks and the arranged second limiting blocks, the stability between the two laminated slab bodies is maintained, and the situation that a gap is formed again between the two laminated slab bodies due to shaking generated in the mounting process, the mounting position deviates, and the mounting effect is affected is prevented; and meanwhile, certain supporting force is provided for the two sides of the laminated slab bodies through the arranged supporting assemblies, and the mounting stability of the two laminated slab bodies is further ...

Vinyl cyanide compounds, preparation and application thereof

The present invention discloses an acrylonitrile compound, a preparation method thereof, and a pest prevention and curing agent with the compound as an active constituent. The compound has structural characteristics as shown in Formula (I). In the preparation method, under the condition with alkaline, an organic solvent at the temperature between minus 10 DEG C and 150 DEG C is used for the reaction between benzofuran acyl chloride or pyrazole acyl chloride and substituted benzyl cyanide, so as to produce an intermediate, the produced intermediate reacts with acyl chloride, and the (I) can beseparated. The compound can be used as an active constituent in a pest prevention and curing agent. The present invention has the advantages that the compound has excellent prevention and curing effects on harmful insects and acarus category, the activity of the compound is high, the consumption is low and the security is excellent.

Dihalo-propylene compound and preparation method and application thereof

The invention discloses a dihalo-propylene compound shown by a general formula (I), wherein R<1> is C1-C5 alkyl, phenyl or substituted phenyl, R<2> is C1-C5 alkyl or C1-C5 haloalkyl, R<3> is hydrogen, halogen, C1-C3 alkyl, C1-C3 alkoxy, nitro, cyano, sulfur cyano, trifluoromethyl sulfonyl or trifluoromethyl sulfinyl; R<4> is halogen, C1-C5 alkyl, cyano or nitro; X is halogen; and n is between 2 and 4, and m is between 2 and 4. The invention also discloses a method for preparing the dihalo-propylene compound. The dihalo-propylene compound has excellent control efficiency to harmful insects, thus the dihalo-propylene compound can be applied to preparing insecticides in the fields of agriculture, gardening and the like, and has the advantages of high efficiency, low toxicity and environmental protection.

External valve hand wheel anti-loosening device

The utility model discloses an external valve hand wheel anti-loosening device, which achieves the purposes of prolonging the service life of an emptying gate and improving the operation safety of workers, and is characterized in that a shaft seat is welded at the outer edge of a valve cover, a shaft is longitudinally arranged by penetrating through the shaft seat, an S-shaped limiting plate is movably sleeved on the shaft, and the side surface of the S-shaped limiting plate can act on the outer edge of a pressing cap; a stop pin is fixedly arranged on the upper portion of the S-shaped limiting plate in the longitudinal direction and can act on a spoke of the hand wheel. A T-shaped positioning block I is fixedly arranged on the outer edge of a pressing cap, and the same horizontal plane ofthe T-shaped positioning block I is connected with a T-shaped positioning block II through a connecting piece; and the T-shaped positioning block II is connected with the S-shaped limiting plate through ...

Disinsection acaricidal cream and aqueous emulsion containing alpha-cyano-N-benzyl pyrazole acidamide compound

The invention discloses a composite which is used for killing pests and mites, contains alpha-cyano-N-phenmethyl pyrazole amide compounds; the composite takes alpha-cyano-N-phenmethyl pyrazole amide compounds of the formula (I) and pyrethroid compounds as the active ingredients. The composite has the characteristics of killing pests and mites, and synergy to the tetranychus mites.

Prepn of wide-spectrum biopesticide of Chinese herbal medicine

The present invention features that the pesticide is one kind of biological preparation produced with six kinds of Chinese medicinal materials including omphalia lapialia, Celastrusang ulatus, rangoon creeper, areca, ricepaper pith and aucklandia root and through selecting material, compounding, crushing, bacterial liquid culture, decoction, filtering, deposition, anticorrosion preservation treatment and packing. It is used to spray onto fruit tree, flower and crops, and can kill pests through damaging their cuticle structure and penetrating into pest body. It has obvious killing effect on budworm, scale insect, caterpillar, leaf rollers, etc. and has no environmental pollution and is safe to human body and farm animal. It is used to replace chemical pesticide in producing no-pollutionagricultural product.

Propionic ester compound, intermediate, preparation method and herbicide containing the same compound

Preparation method of Cidofovir and intermediate thereof

The invention discloses a preparation method of Cidofovir of a structural formula (I) and an intermediate thereof. The preparation method comprises the following steps: (1) a compound of a formula (II) reacts with epoxy halogenopropane in the presence of a catalyst in an alkaline environment to obtain a compound of a formula (III); (2) cytosine reacts with a compound of a formula (IV) in the presence of a proper solvent to obtain a compound of a formula (V); (3) compounds obtained in the two steps are condensed in the presence of the proper solvent to obtain a compound of a formula (VI); (4) the compound of the formula (VI) reacts with p-benzenesulfonyloxymethyl phosphoric acid diethylester in the presence of the proper solvent to obtain a compound of formula (VII); and (5) the compound of the formula (VII) is treated at proper pressure to obtain a compound of a formula (VIII). The preparation method shortens synthetic route and lowers synthesis cost, is simple and practical, has the advantages ...

Pyrazole methanol esters compounds, preparation method and application thereof

The invention discloses pyrazole methanol ester compounds shown as the General Formula (I): wherein, R<1> expresses C1-C5 alkyl, phenyl or substituted phenyl; R<2> expresses C1-C5 alkyl or C1-C5 alkyl halide; R<3> expresses C1-C5 alkyl, C1-C5 alkyl halide, cycloalkyl, substituted cycloalkyl, aryl, substituted aryl or hetero aryl; X expresses hydrogen, halogen, C1-C3 alkyl, C1-C3 alkoxy, nitro, cyano, sulfur cyano, trifluoromethyl sulfonyl or trifluoromethyl sulfinyl. The invention also discloses a preparation method and applications of the compounds. The pyrazole methyl ester compounds has excellent control efficiency on harmful pathogenic bacteria, harmful insects and mites and can be used for preparing insecticides, acaricides or fungicides for the agriculture, horticulture and floriculture fields. The pyrazole methyl ester compounds also can be used for preparing control agents of harmful living beings in the fields of forestry, animal husbandry and public health, etc.

Successive reciprocating formula beam -pumping unit

The utility model relates to a successive reciprocating formula beam -pumping unit, its technical scheme is: be equipped with the support frame on the base, the middle part of walking beam is connected to the support frame, and the front end of walking beam is equipped with the horse head, and the rear portion of walking beam is equipped with the counter weight, the reciprocal operating system of rear end sub -unit connection of walking beam, reciprocal operating system include cylinder body, lifter, spring, the inside lifter that is equipped with of cylinder body, the connection of after section of lifter and walking beam, the inside hydraulic pressure chamber that is equipped with of cylinder body, the hydraulic pressure chamber on be equipped with the feed liquor hole and go out the liquid hole, feed liquor hole site in a liquid hole lower part, the hydraulic pressure chamber on the play liquid check valve of feed liquor jogged joint hydraulic pump, the hydraulic pressure chamber on ...