1432 results about "Muffler" patented technology

A compressor assembly may include a shell, a discharge fitting, a muffler, a compression mechanism, and a motor. The shell may have an opening therethrough with the discharge fitting generally extending therefrom. The muffler may be in communication with the discharge fitting and may be external to the shell. The muffler may have an inlet proximate the discharge fitting, an outlet distal from the discharge fitting, and a body portion extending therebetween. The muffler may include a valve assembly proximate the outlet. The compression mechanism may be contained within the shell and include a suction inlet and a discharge passageway. The discharge passageway may be connected to the opening in the shell for direct discharge of refrigerant from the compression mechanism to the discharge fitting. The motor may be contained within the shell and drivingly coupled to the compression mechanism.

Provided are a cleaning device and a cleaning system, relating to the technical field of electric devices. A cleaning device (10) comprises: a fan assembly (100), wherein the fan assembly (100) provides a suction force for the cleaning device, and the fan assembly (100) is provided with a second air outlet; an air duct (410); and a first air outlet (430) and a first air inlet (420) communicated with the air duct (410), wherein the first air inlet (420) is communicated with the second air outlet (114) of the fan assembly (100), and a silencer (500) is provided in the air duct (410) so as to reduce noise. The silencer (500) is provided in the air duct (410), such that the noise can be reduced as the noise passes through the silencer (500) along with airflow, and the noise diffused to the outside can be reduced, thereby achieving a noise reduction effect.

The application discloses a punching device for motorcycle exhaust muffler pipes and particularly relates to the technical field of punching devices, which comprises a supporting frame, a clamping and punching assembly arranged on the supporting frame, the clamping and punching assembly comprising a central cylinder arranged in the supporting frame, one end of the central cylinder being provided with an adjusting circular truncated cone cylinder, and a plurality of clamping blocks being arranged on the middle part of the adjusting circular truncated cone cylinder. The clamping blocks can be synchronously contracted or expanded along the radial direction, and the arc-shaped fitting grooves on the clamping blocks and the rubber pads can stably clamp the motorcycle exhaust muffler pipes with a certain range of outer diameter differences. The punching device can solve the problem that the traditional punching device can only be adapted to single-specification pipes and the time-consuming replacement of molds, greatly improve the universality of the equipment, simultaneously punch different positions of the same section of the muffler pipe, and automatically feed the slip ring through the motor-driven screw rod, so that the clamping, angle adjustment, punching and resetting linkage operation can be completed, manual intervention is reduced, and the operation strength is reduced.

The present application relates to the technical field of silencer, especially to a silencing assembly and a silencer, the silencing assembly is provided with a first panel, a second panel, a first connecting piece and a second connecting piece; the transparent first panel and the second panel are opposite and spaced apart; the first panel is provided with a plurality of through holes; the first connecting piece and the second connecting piece are opposite and spaced apart; one end of the first connecting piece is connected with the first panel, and the other end is detachably connected with the second panel; one end of the second connecting piece is connected with the first panel, and the other end is detachably connected or hinged with the second panel; the first panel, the second panel, the first connecting piece and the second connecting piece enclose a cavity in the shape of a cuboid. When dust collection affects the silencing effect, the second panel can be detached or rotated to open the inside of the silencing assembly for cleaning, and the dust collection is cleaned away, so that the silencing effect is ensured not to be affected by cleaning the dust collection, which is easy to realize, has higher efficiency and lower cost.

The invention provides a cooling air duct structure and a generator set. The cooling air duct structure comprises a power body, a first shell, a motor body, a second impeller, a second shell, a silencer body and a third shell. The first shell is arranged on the rear side of the power body, and the motor body and the second impeller are both installed in the first shell. The silencer body and the third shell are both arranged in the second shell, the third shell is arranged outside the silencer body in a surrounding mode, a first exhaust channel is formed between the third shell and the silencer body, and one end of the first exhaust channel is communicated with the second cavity. By reasonably arranging the third shell, the third shell is arranged outside the silencer body in a surrounding mode and forms the first exhaust channel, airflow after cooling the motor body can only enter the first exhaust channel, cooling airflow can directly and fully exchange heat with the silencer body when flowing through the first exhaust channel, and therefore heat of the silencer body is rapidly taken away, and the service life of the silencer body is prolonged. In this way, the cooling effect on the silencer body is greatly improved.

The utility model discloses a mute damping pneumatic knife which comprises a shell, an air inlet assembly installed in the shell, a moving assembly driven by high-pressure air to reciprocate, a knife head arranged at the front end of the moving assembly and moving up and down along with the moving assembly, an exhaust assembly used for guiding air to be exhausted and a damping assembly. The damping assembly comprises a buffering sleeve, a spring and a guide ring, the guide ring is clamped in the shell, the buffering sleeve and the moving assembly are assembled into a whole and are installed on the shell in a suspended mode through the guide ring, and the spring is installed between the buffering sleeve and the shell. High-pressure gas drives the motion assembly to reciprocate at a high speed to drive the cutter to perform efficient vibration cutting, vibration caused by motion of the motion assembly is effectively reduced through the damping assembly, the cutter is almost free of vibration, the cutting quality is improved, the service life of the cutter is prolonged, and the pneumatic cutter is relatively simple in structure, low in maintenance cost, high in reliability and suitable for popularization and application. And a silencer is also arranged, so that the noise during working is effectively reduced, and a better working environment is provided.

The utility model discloses a pressure regulator with a silencing function, and belongs to the technical field of pressure regulation and stabilization, an internal silencer and an external silencer are additionally arranged on the basis of the structure of an axial-flow type pressure regulator, when a valve cylinder is separated from a valve clack and a valve port seat, gas flows out through a silencing through hole of the internal silencer, and when the gas flow speed is high enough, the gas flow speed is high enough, and the gas flow speed is high enough. The noise reduction through holes can move the frequency spectrum of exhaust noise to high frequency, the audible sound part in the noise frequency spectrum is reduced, and therefore interference of the noise to the environment is reduced, the noise reduction barrel filled with the spring is arranged in the external silencer, when airflow passes through the spring in the noise reduction barrel, the spring in the noise reduction barrel can absorb kinetic energy generated by airflow impact, and the noise reduction effect is improved. When the airflow passes through the rectifying plate at the open end of the external silencer, the airflow passes through the multiple layers of perforated plates, layered diffusion and pressure reduction are achieved, the pressure and the flow speed of the fluid are reduced, meanwhile, the flow direction of the fluid is integrated, impact on the pipe wall is reduced, and the effect of reducing the noise is achieved.

A compressor may include: a lower and upper cylinder each including: a compression chamber configured so that a refrigerant is compressed in the compression chamber and the compressed refrigerant is discharged from the compression chamber, a lower muffler on a lower side of the lower cylinder, and configured to receive, and reduce noise of, the refrigerant discharged from the lower cylinder and discharge the refrigerant to an accommodation space, and a separation muffler in an upper side of the upper cylinder, and configured to receive, and reduce noise of, the refrigerant discharged from the upper cylinder to the accommodation space, wherein the separation muffler is divided from a flow path along which refrigerant from the lower muffler is discharged so that, before reaching the accommodation space, the refrigerant discharged from the lower muffler is divided from the refrigerant discharged from the separation muffler.

The invention discloses a preparation method of a mute tube core layer and a mute tube. The preparation method comprises the following steps: step 01, adding 15-55 parts by weight of polypropylene resin, 0.5-10 parts by weight of a coupling agent, 0.5-5 parts by weight of a lubricant, 0.05-1 part by weight of an antioxidant and 0.1-3 parts by weight of other additives into a twin-screw extruder from a main feeding port of the twin-screw extruder, and melting and mixing to form an intermediate melt; 02, 45-85 parts by weight of barium sulfate is added into a double-screw extruder through at least two side feeding ports of the double-screw extruder, the barium sulfate and the intermediate melt are subjected to melt blending, and a blended melt is formed; and step 03, extruding the blended melt by a twin-screw extruder, and sequentially passing through a melt pump and a pipeline core mold to form the pipe core of the mute pipe. According to the preparation method, the filling proportion of barium sulfate is increased to 70% or above, the material density is larger than 2.4 g / cm < 3 >, and the noise test of a drainage pipe system of the mute pipe prepared through the preparation method is smaller than 20 dB.

The invention discloses air tightness detection equipment for an automobile silencer, which comprises a base, a plurality of clamping pieces, a driving device and a transmission mechanism, and is characterized in that the base is provided with a placing station for placing a silencer body, and the clamping pieces are horizontally and slidably arranged at two sides of the top end of the base and are located at two sides of the placing station; the correspondingly matched clamping pieces form a first clamping assembly and a second clamping assembly, the driving device is installed on the base, the transmission mechanism is installed on the base, the input end of the transmission mechanism is connected with the output end of the driving device in a matched mode, and the output end of the transmission mechanism is connected with the clamping pieces in a matched mode. The device has the beneficial effects that firstly, the first clamping assembly completes clamping and positioning, and at the moment, the area, corresponding to the silencer body, of the second clamping assembly is exposed; then the second clamping assembly clamps and positions the silencer body, meanwhile, the first clamping assembly is loosened, the area which is originally shielded by the first clamping assembly is completely exposed, and airtightness detection of the whole surface of the silencer body is achieved.

A muffler for an exhaust system of an internal combustion engine includes a muffler housing having a peripheral wall elongated along a longitudinal axis of the muffler housing. The peripheral wall has first and second end walls. A muffler insert is surrounded by the peripheral wall and is supported thereon. The muffler insert has a retaining wall extending in a direction of the longitudinal axis. The peripheral wall has a peripheral wall opening and a first exhaust-gas routing pipe has a first end region and is positioned with the first end region thereof engaging in the peripheral wall opening. The first exhaust-gas routing pipe has a second end region and is secured by the second end region thereof to the retaining wall. The first exhaust-gas routing pipe is of multi-part configuration and has a first pipe part and a second pipe part.

An off-road vehicle includes a vehicle body frame, a cargo bed, an internal combustion engine, and an exhaust system. The cargo bed is supported by the vehicle body frame. The internal combustion engine is supported by the vehicle body frame and provided in a space under the cargo bed. The exhaust system is connected to an exhaust port of the internal combustion engine. The exhaust system includes a first exhaust pipe, a first muffler, a second exhaust pipe, and a second muffler. The first exhaust pipe is connected to the exhaust port. The first muffler is connected to the first exhaust pipe and provided in the space under the cargo bed. The second exhaust pipe is connected to the first muffler. The second muffler is connected to the second exhaust pipe and provided in the space under the cargo bed.

The application relates to a three-stage vacuum pump set using a water-cooled variable-frequency integrated motor and a control method. The application comprises a Roots vacuum pump, a Roots pump support frame, a rack and an air inlet flange, and is characterized in that the application further comprises a two-stage dry vacuum pump, an upper-lower pump connecting flange, an electric control system, an exhaust silencer, a communication line joint and a power line joint; the two-stage dry vacuum pump is composed of a high-pressure-difference Roots vacuum pump and a dry screw vacuum pump, the two-stage dry vacuum pump is installed on the rack, and the two-stage dry vacuum pump is located directly below the Roots vacuum pump; the Roots vacuum pump air outlet is connected with the two-stage dry vacuum pump air inlet through the upper-lower pump connecting flange; the exhaust silencer is connected with the two-stage dry vacuum pump air outlet; the high-pressure-difference Roots vacuum pump shell and the dry screw vacuum pump shell are both provided with cooling water jackets. The application has reasonable structure design, small volume, can cope with large load working conditions and reduce the overall failure rate of the Roots vacuum pump.

The utility model discloses a compressor and electrical equipment, the compressor comprises a shell, an outer exhaust pipe, a crankcase, a first gas path, a second gas path and at least one silencer, the crankcase is provided with at least two buffer cavities; the first gas path comprises one buffer cavity or a part of buffer cavities which are communicated in sequence; the second gas path comprises another buffer cavity or another part of buffer cavities which are communicated in sequence; the first gas path and the second gas path are sequentially communicated with the external exhaust pipe; or the first gas path and the second gas path are connected in parallel and are respectively communicated with the external exhaust pipe; wherein a connecting pipe is connected between every two adjacent buffer cavities which are communicated with each other, a connecting pipe is connected between the buffer cavity and the outer exhaust pipe which are communicated with each other, and at least one connecting pipe is connected with a silencer. The compressor can reduce exhaust pulsation and improve stability of exhaust airflow, and therefore vibration and noise are reduced.

The invention discloses an impedance combined type noise elimination structure parameter design method, which comprises the following steps of: firstly, determining target noise reduction quantity and target sound absorption center frequency of a resistive noise elimination section and a resonant cavity resistance noise elimination section according to noise source characteristics, and then iteratively adjusting structural parameters of the resistive noise elimination section and parameters of the resonant cavity resistance noise elimination section; and until the deviation between the sound absorption center frequency of the resonant cavity and the target sound absorption center frequency is within an allowable range, and the noise reduction amounts of the resistive noise elimination section and the resonant cavity resistant noise elimination section respectively reach the corresponding target noise reduction amounts. According to the method, parameters of the impedance combined type silencing structure can be effectively, rapidly and reasonably determined, and the problem that an existing impedance combined type silencer lacks a systematic method for coordinating multi-target constraints such as silencing performance, airflow resistance and structural strength is effectively solved.

The utility model relates to an energy-saving and environment-friendly screw type steam compressor testing device, which comprises an air suction filter, an exhaust separator, a heat recoverer, a lubricating oil tank, a softened water tank and a softened water treatment device, an air suction silencer and an air exhaust silencer are respectively arranged on the compressor air exhaust pipe and the compressor air inlet pipe; the compressor air inlet pipe is connected with the exhaust separator through a circulating water spraying pipeline; the heat recoverer is connected with the softened water tank through a condensate pipe and a balance pipe, the softened water treatment device is connected with the softened water tank, and the softened water tank supplements water to the screw type steam compressor to be tested through a softened water supplementing pipe. The steam generation speed of the air dynamic heat engine is increased through the circulating water spraying pipeline, the dynamic heat engine time is short, and meanwhile the power consumption of the driving motor is reduced; the noise reduction effect is good, the noise reduction cost is greatly reduced, and meanwhile, the field working environment of the test device is greatly improved; through the condensation phase change white smoke elimination technology of the heat recoverer, the heat in the steam can be completely recycled.

The invention provides a Helmholtz silencer with broadband sound absorption performance, and belongs to the technical field of silencers. Comprising a tubular neck and a cylindrical back cavity, a plurality of annular thin plates are evenly arranged and fixed on the inner wall of the cylindrical back cavity in the length direction, the distance between every two adjacent annular thin plates is larger than 0 and smaller than 3 mm, and the inner diameters of the annular thin plates are gradually reduced from the tubular neck to the interior of the cylindrical back cavity. A plurality of annular thin plates are fixed in the cylindrical back cavity, so that a gap between two adjacent annular thin plates forms a sound absorption unit, and the inner diameters of the plurality of annular thin plates are gradually reduced from the tubular neck part to the interior of the cylindrical back cavity according to index change; the sound absorption frequency band of the sound absorption device does not completely depend on the inherent frequency generated by resonance of an air column at the neck of the Helmholtz silencer, the structure is simple, the cost is low, the sound energy dissipation when sound waves enter the Helmholtz silencer can be increased, and the sound absorption device has good broadband sound absorption performance.

A silencer 20 includes an external shell member 31 having a silencer chamber SP defined therein and an internal pipe 51 disposed in the silencer chamber SP. The external shell member 31 has an external shell opening 60 formed in a peripheral wall thereof, and the internal pipe 51 has a pipe opening 68 is formed in a peripheral wall thereof. The internal pipe 51 includes a cylindrical projection 69 protruding radially outwards from the peripheral wall of the internal pipe 51. The projection 69 is provided along the circumference of the pipe opening 68 about the axis of the pipe opening 68. An oxygen sensor 64 is positioned so as to plug the pipe opening 68. The silencer 20 includes a cap 72 that covers the external shell opening 66. The cap 72 is joined to a portion of the external shell member 31 around the external shell opening 66 and to the projection 69 of the internal pipe 51. An outer radius dimension d1 of the projection 69 is set smaller than an inner radius dimension d2 of the external shell member 31.

The invention relates to the technical field of blanking, in particular to a partition plate blanking device for automobile exhaust pipe silencer production, which comprises a table top, a bracket, a blanking system, a fixed table, a blanking frame, a fixed plate, a blanking sliding plate, a blanking rod, a guide plate and the like, a support, a blanking system, a fixing table and a discharging frame are connected to the table top, the fixing table is fixedly connected with the discharging frame, a blanking sliding plate is slidably connected to the blanking system, a blanking rod is connected to the bottom of the blanking sliding plate, a fixing plate is connected to the discharging frame and communicated with the discharging frame, and a guide plate flush with the fixing plate is connected to the fixing table. By arranging the first connecting rod, the second connecting rod, the arc-shaped push plate, the arc-shaped limiting block and the like, multiple times of automatic feeding of the partition plate can be achieved, manual feeding is not needed, the labor intensity of workers and the labor cost are reduced, potential safety hazards caused by operation of operators near the blanking device are reduced, and the safety of partition plate blanking is improved.

The utility model discloses an airflow dredging device of an ultra-silence silencer, and belongs to the technical field of airflow dredging devices. Comprising an airflow dredging channel, flange connectors are fixedly installed at the two ends of the airflow dredging channel, multiple sets of flow guide strips are arranged on the inner wall of the airflow dredging channel, an air inlet is formed in one end of the inner wall of the airflow dredging channel and is conical, and multiple sets of flow dividing holes are formed in the end of the air inlet. An air outlet is formed in the other end of the inner wall of the airflow dredging channel and is in a solid cone shape. According to the utility model, airflow can be rotated and shunted when passing through the interior of the airflow dredging channel, so that the airflow is dredged, the airflow is more uniform when entering the silencer, the probability that the airflow forms turbulent flow in the silencer is reduced, and the working efficiency of the silencer is improved.

The utility model provides a folding type special silencer for an automobile air conditioning system, which comprises a silencing end, a first connecting end, a second connecting end, a valve, a connecting pipe, a sound absorbing plate and a connecting frame, the air inlet end of the silencing end is fixedly provided with the second connecting end through the connecting frame, and the exhaust end of the silencing end is fixedly provided with the first connecting end through the connecting frame; valves are fixed at the other ends of the first connecting end and the second connecting end, and the other ends of the valves are connected with corresponding structures of the automobile air conditioning system through connecting pipes; and sound absorption plates are fixed in the silencing end, the first connecting end and the second connecting end. According to the automobile air conditioner silencer, the silencing effect on an automobile air conditioner system can be achieved through the sound absorption plate, the silencing efficiency can be adjusted through the connecting frame, and in addition, due to the arrangement of the valve, the automobile air conditioner silencer is convenient to disassemble.

The utility model provides a Helmholtz silencer based on a quasi-zero stiffness element, which belongs to the technical field of pipeline silencers and comprises an air cavity, a panel is mounted in the air cavity and connected with the air cavity through a vibrating diaphragm, a boss is fixedly mounted on the panel, and the vibrating diaphragm is connected with the boss. The boss is connected with one end of the supporting spring in the radial direction of the main pipeline, the other end of the supporting spring is connected with the air cavity, the two ends, in the axial direction of the main pipeline, of the boss are connected with one end of the pre-compression spring respectively, and the other end of the pre-compression spring is connected with the air cavity. The low-frequency noise in the pipeline is effectively controlled, the low-frequency noise control device has the advantages of being compact in structure, small in size and the like, and if noise of different frequencies needs to be controlled, only the compression amount of the pre-compression spring needs to be adjusted to change the overall rigidity of the structure; under the condition of the same neck area, a smaller air cavity volume can be adopted, the rigidity of each spring can be freely adjusted, and the height of the back cavity is greatly reduced.

The utility model relates to a fan silencer mesh plate surface gluing and attaching device which comprises a linear module, a supporting plate and a support, a machine base is fixedly connected to a moving table of the linear module, a carrying plate and a first motor are arranged on the machine base, sliding grooves are formed in the periphery of the carrying plate, a sliding block is connected to each sliding groove in a sliding mode, and the first motor is arranged on the supporting plate. A guide wheel is arranged on each sliding block, an air cylinder is arranged in the middle of the carrying plate, a piston rod of the air cylinder is fixedly connected with a vacuum adsorption plate, an adjusting rod and a second motor are arranged on the support, a rotating shaft of the second motor is fixedly connected with the adjusting rod, and the adjusting rod is rotationally connected with the support. And a plurality of gluing assemblies are arranged on the adjusting rod, and each gluing assembly comprises an adjusting sliding sleeve, a gluing gun and a locking screw. The automatic gluing and attaching device has the beneficial effects that the automatic gluing and attaching device can adapt to automatic gluing and attaching treatment of mesh plates with multiple sizes, and is wide in application range.

Systems and apparatuses include a container for a generator set. The container includes a housing including a cooling room structured to support a radiator and a radiator fan within the housing, an exhaust room structured to support an aftertreatment system, an engine room structured to contain the engine and the alternator within the housing, an air intake system positioned adjacent the engine room, and a control room structured to support control equipment for the generator set. The exhaust room may further support after treatment components including a muffler and an exhaust pipe.

The utility model relates to the field of pipeline cleaning, and discloses a steam blowing device which comprises an air inlet pipe connected with an air outlet of a cleaning pipeline and a silencer body arranged on the side, away from the pipeline, of the air inlet pipe, and further comprises a filtering device arranged on the side, close to the silencer body, of the air inlet pipe, the filter is used for filtering impurities in steam; the filter device comprises a mounting box arranged on the air inlet pipe, and an exhaust hole is formed in the position, connected with the air inlet pipe, of the mounting box; the sealing block is adjustably arranged in the mounting box; according to the steam exhaust device, noise generated during steam exhaust is effectively reduced, the working environment is improved, hearing health of operators is protected, waste residues in the steam are filtered, and potential safety hazards caused by direct emptying of the waste residues in the high-temperature steam are avoided. And the safety of cleaning the steam pipeline is improved.

A muffler assembly and a new energy device are disclosed according to the present disclosure. The muffler assembly includes a muffler unit including a side plate and a partition plate. The side plate includes an upper side plate and a lower side plate which are oppositely arranged. The partition plate includes a first partition plate, a second partition plate and a third partition plate, the first partition plate and the third partition plate are connected to the lower side plate, the second partition plate is connected to the upper side plate and arranged between the first partition plate and the third partition plate. A first muffler channel, a second muffler channel, and a third muffler channel are formed.

This invention provides a muffler, a compressor, and an air conditioner. The muffler includes a muffler body having a flow chamber, a first exhaust passage, a first silencing chamber, a first exhaust port, and a first vent. The flow chamber is connected to the outside of the muffler body through the first exhaust passage, and the first silencing chamber is connected to the outside of the first exhaust port through the first exhaust port. The two ends of the first vent lead to the flow chamber and the first silencing chamber, respectively. A first valve body is located in the first silencing chamber and can open or close the first vent according to the flow rate of the fluid flowing in the first exhaust passage. According to this invention, because the first silencing chamber diverts the gaseous refrigerant flowing in the flow chamber when the exhaust pulsation is large, the gaseous refrigerant with different flow rates is automatically matched with the corresponding flow path and chamber, thus optimizing the exhaust pulsation problem. At the same time, adaptively adjusting the flow path and chamber corresponding to the gaseous refrigerant with different flow rates also achieves noise reduction for multiple frequency bands.

The utility model discloses a kind of conical cylinder curling welding devices, belong to exhaust muffler processing field, including machine table, conical male die and lifting hole are arranged on machine table, Z direction movement assembly is equipped below lifting hole, the upper end of Z direction movement assembly is equipped with push block;X direction movement assembly is equipped on machine table, the movement end of X direction movement assembly is equipped with receiving table;Conical male die two sides are symmetrically equipped with Y direction movement assembly, the movement end of Y direction movement assembly is equipped with side push block;Machine table is also equipped with sliding assembly, the movement end of sliding assembly is stretched to the above conical male die and is equipped with welding torch.The beneficial effects of the present application are: receiving table is transmitted to the below conical male die to the plate material to be curled, push block is lifted to the plate material to be curled and conical male die is cooperated to carry out preliminary bending, two sides side push block promotes the both ends of plate material to be curled to close, finally through welding torch and is welded, degree of automation is high, the shape and bending amplitude of conical cylinder can be accurately controlled, improve welding quality and production efficiency.

The embodiment provides a silencing device for a compressor, comprising a silencer and a check valve. The silencer includes a housing with a first connecting end and an internal silencing assembly. The first connecting end has an opening structure communicating with the housing cavity, and the exhaust end of the silencing assembly extends to this opening. The check valve includes a valve body with a valve core assembly and a second connecting end having a first air inlet. The second connecting end connects to and seals the first connecting end. The exhaust end of the silencing assembly is connected to the air inlet, providing a simple, compact connection that enables a smaller and lighter compressor silencer.