69results about How to "Play a role in silencer" patented technology

The invention belongs to the field of air guns and particularly relates to an air cylinder type air pistol. The air cylinder type air pistol comprises a trigger mechanism, an air inlet device, an air outlet device, a loaded linkage mechanism, a sight device and a front sight device, wherein the air inlet device comprises an air cylinder, wherein the air cylinder is mounted in an air pipe through a locking sleeve, and the air outlet end of the air cylinder is connected with an air inlet structure; the air inlet structure comprises an air inlet valve, and a pricking pin is arranged in the air inlet valve; the air outlet device comprises a valve body component, one end of the valve body component is connected with the pricking pin, and the other end of the valve body component is abutted against an air outlet. The air cylinder type air pistol has the benefits that the operation is convenient, the structure is simple and practical, and a method for manually pressing air into an air chamber in the air gun during a shooting is eliminated.

The invention relates to a PVC (polyvinyl chloride) silencing water drainage pipe and a production method thereof. The PVC silencing water drainage pipe is prepared from being prepared from the following raw materials in parts by weight: 80 to 100 parts of polyvinyl chloride resin, 100 to 130 parts of nano anhydrous calcium sulfate, 5 to 8 parts of a stabilizer, 2 to 5 parts of a modifier, 0.5 to2.0 parts of PE (polyethylene) wax, 0.5 to 2 parts of an aluminate coupling agent and 0.2 to 0.5 part of a compound antioxidant. The raw materials of the PVC silencing water drainage pipe are simple and easy to obtain, so that the PVC silencing water drainage pipe is low in cost, extremely high in aging resistance, flexibility, low-temperature resistance and high-temperature resistance; by the adding of a methyl methacrylate-butadiene-styrene copolymer, the PVC silencing water drainage pipe achieves a silencing effect; the low-temperature toughness and the impact resistance are improved; the PVC silencing water drainage pipe has a shock absorption function.

The invention discloses an efficient parallel flow heat exchanger. The heat exchanger comprises an outer protection layer, connectors, heat dissipation fins, fin installation base plates, a cooling fluid outlet, a concentrated flow outlet, a concentrated flow inlet, a cooling fluid inlet and partition plates; flat pipes are connected to the left sides and the right sides of the connectors, cooling pipes are installed inside the flat pipes, and the flat pipes are arranged above the heat dissipation fins; concentrated flow pipes are arranged below the concentrated flow inlet; the connectors are fixed to the left sides and the right sides of the cooling pipes; and the concentrated flow pipes are connected to the exteriors of the partition plates. According to the efficient parallel flow heat exchanger, the multiple flat pipes are arranged, the cooling pipes are installed inside the flat pipes, the heat dissipation fins are installed below the flat pipes and are of a corrugated shape, and therefore heat of airflow in the flat pipes can be dissipated well and stably, and the heat dissipation effect is good; and the cooling pipes are uniformly distributed inside the flat pipes and are installed in symmetry relative to the concentrated flow pipes, the airflow in the flat pipes can be uniformly cooled, and therefore the cooling effect is good, and the heat exchange efficiency is high.

The invention relates to a lock comprising a locking mechanism having a rotary latch which consists at least to some extent of metal and which contains a load arm and a detent arm, the rotary latch being rotationally mounted on a rotary latch shaft and being adapted to accommodate a lock holding pin, the metal part of said load arm not entirely extending around the rotary latch shaft and being preferably open towards the lock holding pin in the main position of detent. Preferably, the load arm is designed in such a manner as to support itself on the lock wall when in the main detent position. The invention further relates to the use of a lock according to the invention in a motor vehicle.

The invention discloses an air conditioning air deflector and a manufacturing method of the same. The air conditioning air deflector comprises an arc metal material lining, at least one layer of sound-insulation wind deflector outer layer is arranged on the outer surface of the metal material lining, a fastening component connected with the upper end of the sound-insulation air deflector outer layer is arranged at the upper edge of the inner surface of the metal material lining, a connecting component connected with the lower end of the sound-insulation air deflector outer layer is arranged at the lower edge of the inner surface of the metal material lining, and a middle connecting piece is arranged in the middle of the inner surface of the metal material lining. The sound-insulation air deflector outer layers are arranged on the surface of the metal material lining, so that when an air conditioner is started, sound reduction, sound attenuation and noise reduction functions are achieved; by the additional arrangement of the sound-insulation air deflector outer layers, connecting clearances of air deflectors and air conditioning parts are greatly reduced, and water drops generated under the action of heat conduction are reduced; the sound-insulation air deflector outer layers are tightly connected with the metal material lining, so that convenience in assembly is achieved, production cost is greatly lowered.

The invention discloses a strong heat dissipation waterproof cabinet, which comprises a main cabinet body, the lower part of the main cabinet body is fixedly connected with a rectangular heightening frame, the upper part of the rectangular heightening frame is provided with a plurality of layers of element mounting plates, and the cabinet is provided with the main cabinet body, and the left side and the right side of each element mounting plate are provided with waterproof composite baffle plates, so that a waterproof effect can be achieved; a temperature adjusting cabinet body is arranged on the upper portion of the main cabinet body, a refrigeration mechanism is arranged on the left side of a first heat conduction straight pipe, cold energy emitted by the refrigeration mechanism is supplied through the first heat conduction straight pipe and a first heat dissipation aluminum sheet, the effect of reducing the temperature in the cabinet is achieved, a heating pipe is fixedly connected to the upper side of the interior of the temperature adjusting cabinet body, and the effects of moisture prevention and dehumidification can be achieved; the graphene heat dissipation layer is arranged between the second heat dissipation aluminum sheet and the first heat dissipation aluminum sheet, the effect of accelerating heat dissipation can be achieved, and the composite shielding layer is bonded to the main cabinet body, so that the effect of shielding electromagnetic signals can be achieved, and external interference is prevented.

The invention relates to an exhaust recovery device, in particular to an exhaust recovery device of a rotary film type thermal deaerator. The exhaust recovery device comprises an exhaust pipe and a horizontal water tank connected with the exhaust pipe, a water inlet is formed in the top of the horizontal water tank, a water drainage port is formed in the bottom of the horizontal water tank, a silencer is arranged at the lower end inside the horizontal water tank, one side of the silencer is fixedly connected with the exhaust pipe, the other side of the silencer is connected with an exhaust port, an arc cover plate is arranged on the air inlet, and a negative pressure hole is formed in the arc cover plate. According to the exhaust recovery device of the rotary film type thermal deaerator with the technical scheme, noise reduction and waste steam recovery are achieved, and energy is saved.

The invention provides a silencer for a drum. The silencer is installed in the drum, a fixing plate is fixedly connected with the drum side wall, and a hole of which the hole diameter is larger than the diameter of a screw rod is reserved in the drum side wall and is used for allowing the screw rod to penetrate through; when silencing is needed, a nut block is gradually close to the fixing plate by regulating the screw rod end located outside the drum, the nut block drives a hinged plate, the hinged plate drives a hinged rod, the hinged rod drives a drum pad to be gradually buckled to the drum skin in an attached mode, and therefore the silencing function is achieved; when the silencing state needs to be released, the nut block is gradually away from the fixing plate by reversely regulating the screw rod end located outside the drum, the nut block drives the hinged plate, the hinged plate drives the hinged rod, the hinged rod drives the drum pad to be gradually separated from the drum skin, and therefore the silencing state is released. According to the silencer for the drum, the structure is reasonable, the occupied space in the drum is small, regulation is convenient while the better silencing effect is achieved, the influences on the tone quality of the drum are few, and the good practical value is achieved.

The invention relates to a tail gas filter with a good black smoke filtering effect. The tail gas filter comprises a filtering tank (1). A first filtering net (2), a first ceramic honeycomb carrier (3), a second ceramic honeycomb carrier (7) and a second filtering net (8) are sequentially arranged in the filtering tank (1) in the air flow direction. A silencing pipe (10) is arranged in the filtering tank (1). Branch pipes (11) with holes formed in the walls are arranged on the silencing pipe (10). According to the tail gas filter with the good black smoke filtering effect, tail gas with main components being CO, HC and NOx is reacted into CO2, H2O, N2 and O2 under four-stage filtration of the first filtering net, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second filtering net, meanwhile, black smoke particles in waste gas can be effectively filtered out through micro holes in a partition wall, the black smoke particles can be burned up under the action of a catalyst coating, and the tail gas purification effect is further improved; and meanwhile the filter is good in silencing effect.

The invention provides a pump body module and a compressor. The pump body module comprises a cylinder (1), a roller (2) and a slide piece (3); the roller (2) is rotationally arranged in the cylinder (1); the cylinder (1) is provided with a slide piece groove (4), an exhaust groove (5) and an air sucking port (6); the slide piece (3) is slidingly arranged in the slide piece groove (4); one end of the slide piece (3) butts against the periphery of the roller (2); a first silencing cavity (7) is formed in the side, towards the exhaust groove (5), of the slide piece (3); and in one rotating periodof the roller (2), the first silencing cavity (7) dose not communicate with the air sucking port (6). The pump body module can effectively prevent the silencing cavity from influencing the air sucking quantity of the compressor, and guarantees the working energy efficiency of the compressor.

The invention relates to a low-temperature-resistant and weathering-resistant PVC pipe and a production method thereof, wherein the raw materials comprise, by weight, 80-100 parts of a polyvinyl chloride resin, 10-20 parts of modified kaolin, 2-5 parts of a stabilizer, 1-3 parts of a modifier, 0.5-2 parts of PE wax, 0.5-1 part of a plasticizer, and 0.2-0.5 part of a compound antioxidant. Accordingto the present invention, by using the modified kaolin as the filler, the raw materials are simple and easy to obtain, and have the low cost; and by adding the admixture in a matched manner, the low-temperature resistance of the PVC pipe is greatly improved, and the obtained PVC pipe has advantages of good weathering resistance, good aging resistance and good impact resistance.

The invention relates to a tail gas filter with a good purifying effect. The tail gas filter comprises a filter box (1), wherein a first filter screen (2), a first ceramic honeycomb carrier (3), a second ceramic honeycomb carrier (7) and a second filter screen (8) are sequentially arranged in the filter box (1) in the gas flow direction, wherein a silencing tube (9) is arranged in the filter box (1); and a branch tube (10) with holes in wall is arranged on the silencing tube (9). According to the tail gas filter with good purifying effect, under four-stage filtration of the first filter screen, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second filter screen, tail gas comprising main components of CO, HC and NOx are converted into CO2, H2O, N2 and O2 through reaction; and meanwhile, micro holes in partition walls can effectively filter black smoke particles in waste gas, and the black smoke particles are combusted under the action of a catalyst coating, so that tail gas purifying effect is further improved; and meanwhile, the filter has a good silencing effect.

The invention provides a heat dissipation device of an air blower and belongs to the technical field of fan devices. The problem that a motor of an existing air blower difficultly and effectively dissipates heat is solved. The air blower comprises an air barrel and a motor, wherein the motor is provided with a motor housing, the motor housing is fixedly connected with the air barrel, an air outlet pipe is connected to the air barrel, a branch pipe is fixedly connected to the air outlet pipe, one end of the branch pipe is communicated with the air outlet pipe, the other end of the branch pipe is communicated with the inner cavity of the motor housing, and a flow guide plate is rotatably connected in the air outlet pipe and is connected with an adjusting part. The heat dissipation device of the air blower can conduct timely and moderate heat dissipation and temperature reduction on the motor and is convenient to use.

The invention relates to the field of winding pipe cutting techniques, and discloses a cutting device for an enhanced polyethylene winding pipe. The driving end of a cutting motor is connected with arotating shaft, a cutting blade is fixedly connected with the front surface of the rotating shaft, a falling hole is formed in the upper surface of a workbench and located just below the cutting blade, a recycling box is installed below the workbench, a moving plate is slidably mounted on the upper surface of the workbench and located in front of the falling hole, and a protective cover is mountedon the upper surface of the workbench. Mounting pins are utilized to be embedded into mounting grooves, and the protective cover can be installed on the upper surface of the workbench, so that flyingchips generated in the cutting process can be shielded through the protective cover, and the phenomenon that because the flying chips are disordered, the environment is affected is prevented; and a first placing groove and a second placing groove formed in a first clamping block and a second clamping block are utilized, so that winding pipes with different sizes can be fixed, and loss caused by movement can be prevented.

The invention relates to an exhausted gas filter, which comprises a filter box (1). A purifier (2) and a ceramic honeycomb carrier (3) are arranged in the filter box (1), a hush pipe (7) is arranged in the filter box (1), and a branch pipe (8) with pores in the wall is arranged on the hush pipe (7). Through the two-stage filtration of the ceramic honeycomb carrier and the purifier, the exhausted gas filter makes the exhausted gas with CO, HC and NOx as major components react into CO2, H2O, N2 and O2, meanwhile, the micropores at the adjoining wall can effectively filter out black smoke particles in the exhausted gas, the black smoke particles are burned off under the effect of catalyst coating, and the effect of exhausted gas purification is further improved; meanwhile, the filter is good in noise reduction effect.

The invention discloses a thin-film mute micro-switch, which comprises a base, a cover, an elastic body, a connection sheet A, a gasket and a connection sheet B, wherein the cover covers the base to form an accommodating cavity; a guide core is arranged in the accommodating cavity; the base is provided with a first terminal and a second terminal; the elastic body is arranged in the accommodating cavity and located at the lower part of the guide core; the connection sheet A is arranged on the base and is in contact with the first terminal; the gasket is arranged on the connection sheet A; the connection sheet B is arranged on the gasket; a push part located at the upper part of the connection sheet B is convexly arranged at one end of the elastic body downwards; the connection sheet B is provided with a conductive layer; an upper through hole is formed in the gasket and below the conductive layer; a lower through hole is formed in the connection sheet A and below the conductive layer; the lower through hole is smaller than the upper through hole; and the upper end part of the second terminal extends into the lower through hole. The micro-switch disclosed by the invention is reasonable and novel in structural design and accurate in action in conduction and disconnection processes, has good hand feel, has a mute function and is long in service life, and the mute effect is achieved.

The invention discloses a noise-suppression edge grinding wheel which comprises a flange plate connected with a diamond tool bit substrate; a diamond tool bit is arranged on the diamond tool bit substrate; and a noise-suppression ring is arranged between the noise-suppression diamond tool bit substrate and the flange plate; a nylon noise-suppression ring, an aluminum noise-suppression ring or a copper noise-suppression ring is adopted as the noise-suppression ring; moreover, the noise-suppression ring is connected with the diamond tool bit substrate by a bolt. The noise-suppression ring is arranged between the diamond tool bit substrate and the flange plate; during grinding, when workpieces to be processed, such as ceramics, stone or glass are fed, the noise-suppression edge grinding wheel can play the effects of noise-suppression and buffer, can effectively reduce the noise and reduce the impact force when the diamond tool bit and the workpieces to be processed impact; therefore, damage of the workpieces to be processed can be reduced; the processing quality can be improved; and the service life of the edge grinding wheel can be prolonged. Meanwhile, the noise-suppression ring can play the roles of protecting a motor of a machining device to work stably, and prolonging the service life of the motor. The noise-suppression edge grinding wheel has the characteristics of low working noise, long service life, good machining quality, and broad sphere of application.