102results about How to "Noise isolation" patented technology

The utility model relates to the technical field of gas-gas plate heat exchangers, and discloses a waste gas heat recovery gas-gas plate heat exchanger which comprises an upper shell and a lower shell, a plurality of fixing plates are uniformly mounted on the outer surface of the upper shell, limiting holes are formed in the two ends of the bottom of each fixing plate, and a plurality of mounting seats are uniformly mounted on the outer side of the upper end of the lower shell; the number of the mounting seats is equal to that of the fixing plates, the mounting seats and the fixing plates correspond to each other, cavities are formed in the inner sides of the mounting seats, sliding seats are fixedly mounted at the bottoms of the inner sides of the cavities, two sliding blocks are slidably connected to the upper ends of the sliding seats, fixing blocks are fixedly mounted at the upper ends of the sliding blocks, and inserting rods are fixedly mounted on the inner sides of the two fixing blocks; according to the heat exchanger, the protective shell which can be detached and separated vertically is arranged on the outer side of the heat exchanger body and can enter the heat exchanger body for inspection and maintenance, the maintenance efficiency is improved, meanwhile, the upper shell and the lower shell are allowed to be rapidly detached and reassembled, and the installation time is shortened.

The utility model relates to the field of wooden doors, and discloses a combined wooden door which comprises a bottom plate, second rectangular grooves are formed in the two symmetrical ends of the top of the bottom plate, a face plate and a back plate are arranged on the two sides of the top of the bottom plate respectively, clamping strips are fixed to the two symmetrical side walls of the face plate and the two symmetrical side walls of the back plate, and a plurality of partition plates are fixed to the inner side wall of the back plate at equal intervals. Noise reduction cotton is fixed to the tops of the partition plates, a top plate is arranged at the top of the panel, first rectangular grooves are formed in the two symmetrical ends of the top of the top plate, and a fixing assembly used for fixing the panel and the back plate is arranged at the top of the bottom plate. The wooden door adopts a modular design and is formed by splicing a plurality of components, so that the wooden door is convenient to transport and install, when the wooden door is locally damaged, only the damaged components need to be replaced, the whole wooden door does not need to be replaced, resources are saved, the use cost is reduced, and the practicability is improved; the sound insulation material silencing cotton is added between the face plate and the back plate, noise is effectively isolated, and the sound insulation effect is improved.

The invention provides a modular light sound insulation wall and a forming method thereof, and belongs to the field of fabricated building wall bodies, and the modular light sound insulation wall at least comprises a silencing support, a connecting piece and an outer coating layer. Furthermore, a plurality of silencing cavities are formed in the silencing supports, resonance silencing particles are arranged in the silencing cavities, and the inner sides of the surfaces of the two silencing supports are oppositely arranged and form a sound insulation air layer. The connecting piece is located on the sound insulation air layer and connected with the two silencing supports, and the outer covering layer is formed on the outer sides of the surfaces of the silencing supports. The silencing support is arranged, and the resonance silencing particles and the sound insulation air layer are combined, so that the purposes of light weight and good sound insulation effect are achieved.

The embodiment of the invention provides an upper cover structure which covers a navigation device of a cleaning robot and comprises a cover body which covers the navigation device; the voice interaction module is arranged between the cover body and the navigation device, the voice interaction module comprises a circuit board and a voice interaction piece, and the voice interaction piece is arranged on the circuit board and located between the circuit board and the cover body; the elastic piece is in sealing fit with the circuit board and the cover body, the elastic piece surrounds the voice interaction piece to form a sealing cavity for containing the voice interaction piece, and the cover body is provided with a sound receiving hole communicated with the containing cavity; and the fixing piece is used for fixing the circuit board on the cover body. According to the upper cover structure provided by the embodiment of the invention, the voice device can be hermetically assembled, and the upper cover structure is simple in structure, convenient to disassemble and assemble and low in manufacturing and after-sale cost. The embodiment of the invention further provides a navigation device and a cleaning robot.

The utility model relates to a mute test box, comprising a test box body which is internally provided with a separator plate which divides the interior of the test box body into a first cavity and a second cavity; one side edge of the test box door plate is hinged to the test box body through a hinge, the test box door plate covers the doorway position of the test box body, and the test box door plate and the test box body are locked together through a locking assembly; the motor is installed in the first cavity, a rotating shaft of the motor penetrates through the partition plate and extends into the second cavity, the end, extending into the second cavity, of the rotating shaft of the motor is connected with a transmission shaft, the transmission shaft is connected to the testing tool, the transmission shaft is sleeved with a silencing part, and the space between the silencing part and the transmission shaft is filled with a silencing material layer. According to the mute test box, the stability during testing can be improved, the problem that an existing mute test box is not ideal in noise reduction effect is solved, and the mute test box has good sound insulation performance and sound insulation effect, so that the accuracy of a test result can be effectively improved.

The utility model discloses a mobile office car, which comprises a chassis, the chassis comprises a rear driving wheel and a front driven wheel, a support plate is fixed on a bottom plate, the front driven wheel of the chassis is connected with a steering wheel through a steering mechanism, and the steering wheel penetrates through the support plate; the housing is fixed above the chassis, an office space is arranged in the housing, and a driving window, a plurality of passenger windows and a plurality of vehicle doors are arranged on the housing; the parking air conditioner is fixed at the top of the housing; the office assembly is fixed to the supporting plate and comprises a driver cabin and a passenger cabin, the driver cabin comprises a driver seat, a cover plate is hinged to the inner wall of the housing and located above the steering wheel, the passenger cabin comprises an office table and at least one passenger seat, a storage table is arranged between the driver cabin and the passenger cabin, and the office table is hinged to the inner wall of the housing and located above the steering wheel. And the storage table is connected with a storage box and a water drinking device.

The utility model relates to a concave sound insulation groove floor heating module which comprises a base, a heat conduction layer is arranged on the upper side of the base, a sound insulation and heat preservation layer is arranged at the bottom of the heat conduction layer, grooves are formed in the heat conduction layer at intervals, floor heating pipes are arranged in the middles of the grooves, and inner grooves are symmetrically formed in the grooves. A stop block is movably arranged in the inner groove, and a stop spring is connected between the end, away from the floor heating pipe, of the stop block and the inner groove. The device has the advantages of efficient heat conduction, excellent sound insulation and heat preservation, convenient installation and maintenance, reliable anti-falling performance and the like, and the performance and reliability of a floor heating system are jointly improved.

The utility model discloses an air conditioner installation noise reduction assembly which comprises four noise reduction assemblies installed at the four corners of the bottom of an air conditioner unit body, and each noise reduction assembly comprises a bottom plate, a connecting plate fixed to the surface of the top of the bottom plate and connected with the side wall of the air conditioner unit body and a protruding plate fixed to the other side of the surface of the top of the bottom plate. A round hole for a bolt to penetrate through is formed in the convex plate; five damping and buffering assemblies are arranged in the bottom of the bottom plate, each damping and buffering assembly comprises a circular plate making contact with the ground and a rubber column fixed to the surface of the top of the circular plate, and a rubber ring arranged on the outer circle of the rubber column in a sleeving mode is fixed to the surface of the top of the circular plate. Through the design and structural layout of the components such as the bottom plate, the connecting plate and the convex plate, vibration conduction at the bottom of the unit is effectively isolated, and meanwhile, the damping buffer component is adopted to absorb and reduce noise generated by vibration, so that the noise reduction effect is achieved.

This utility model discloses a bottom structure for a dishwasher and the dishwasher itself. The bottom structure is adapted to be arranged on the lower side of the inner tub. The bottom structure includes a base, a flow guide, and a sound insulation plate. A hinge seat is provided on the base. At least a portion of the flow guide is located on the upper side of the base. The sound insulation plate is located on the upper side of the base and is connected to at least one of the flow guide and the hinge seat. According to the bottom structure of the dishwasher of this utility model, by setting a sound insulation plate that cooperates with the flow guide, the noise generated by the water flow impacting the bottom of the inner tub and the motor pump is effectively isolated, making the dishwasher quieter during operation and reducing the impact of operating noise on the user. The sound insulation plate is connected to the flow guide and / or the hinge seat, realizing the integrated design of the sound insulation plate, the flow guide, and / or the hinge seat, which facilitates modular assembly, improves production assembly efficiency, and has a compact overall structure and small space volume.

The utility model relates to the technical field of composite boards, in particular to a multi-layer composite insulating board which comprises a board body, the board body comprises two insulating layers, two connecting layers and a base layer, a vacuum cavity is formed in the base layer and has a sound insulation function, and a plurality of reinforcing boards are evenly arranged in the vacuum cavity and have a sound insulation function. A triangular columnar cavity is formed between every two adjacent reinforcing plates, stability is achieved, the structural strength of the plate body is enhanced, the service life of the plate body is prolonged, the insulating layers are fixedly installed on the two sides of the base layer through the connecting layers, and the insulating layers are made of asbestos materials and have good insulating performance. The surface layer made of rubber is adhered to the side, away from the connecting layer, of the insulating layer, the rubber has an insulating effect, the insulating performance of the plate body is enhanced, the four corners of the insulating layer, the connecting layer and the base layer are fixedly connected through screws, further reinforcement is achieved, it is guaranteed that all the layers are connected tightly, and falling and falling apart are prevented.

The utility model discloses a ferrite outer rotor direct current brushless motor, which relates to the technical field of brushless motors and comprises a base, the top of the base is connected with a supporting column, the top of the supporting column is provided with a bearing seat, the outer wall of the bearing seat is connected with a rotating shaft, and the top of the base is provided with a box body. By arranging the base, the supporting column, the bearing seat, the rotating shaft, the box body, the water cooling pipe, the water tank, the water pump, the through hole, the first water pipe and the second water pipe, water in the water tank can be driven by the water pump to be injected into the water cooling pipe, heat generated during operation of the motor is absorbed by the water cooling pipe, and the purpose of cooling the motor is achieved; and when the water in the water cooling pipe is not enough to cool the motor, a worker can conveniently replace the water in the water cooling pipe, so that the situation that the service life of the motor is shortened due to long-time operation of the motor can be avoided, and the practicability of the motor is improved.

The utility model discloses a heat insulation sealing broken bridge door and window in the technical field of broken bridge doors and windows, which comprises a main body assembly and a sealing assembly, the locking assembly comprises a connecting shaft, a gear, a first rack, a first limiting frame and a first fixing column; the connecting shaft is connected to one side of the outer surface of the handle, the gear fixedly penetrates through one end of the outer surface of the connecting shaft, the first rack is meshed with one side of the outer surface of the gear, the first limiting frame penetrates through the outer surface of the first rack, the first fixing column is connected to the upper surface of the first rack, and the other side of the outer surface of the gear is meshed with a second rack. A second limiting frame penetrates through the outer surface of the second rack, and a second fixing column is connected to the lower surface of the second rack; the window has the advantages that the window is locked from the upper end and the lower end, additional safety levels are added, the window is firmer and not prone to being damaged by external force, the periphery of the window is tighter when the window is closed through multi-point locking, and external noise and extreme weather conditions are effectively isolated.

The utility model discloses a double-layer shell high-strength corrosion-resistant valve which comprises a valve body, a valve shell is arranged outside the valve body, a valve element is arranged in the valve shell, and the two ends of the valve shell are fixedly connected with pipelines communicated with the valve shell. The two pipelines are slidably connected with protective shells matched with the valve shell in a sleeving mode, the opposite ends of the two protective shells are open, sound insulation cotton is fixedly connected to the inner walls of the protective shells, and the two pipelines are fixedly connected with fixing plates in a sleeving mode. The valve is reasonable in structure, the protective shell is arranged outside the valve shell, noise generated when the valve body works can be effectively isolated through the sound insulation cotton arranged in the protective shell, the mute effect of the valve body can be greatly improved, meanwhile, the valve shell can be protected, and the service life of the valve body is prolonged. And external collision and dust pollution are avoided.

The invention relates to the technical field of concrete processing, in particular to a gravel cleaning device for concrete processing, which comprises an isolation tank and unit cleaning devices, the isolation tank is fixed on a base, and at least two unit cleaning devices for cleaning gravel are mounted in the isolation tank in series from top to bottom; and the unit cleaning device comprises a mounting frame which is fixedly mounted with the isolation tank. According to the gravel cleaning device, closed cleaning of gravel is completed by utilizing the unit cleaning devices which are arranged in the vertical direction in the isolation tank in a multi-stage mode, so that the transfer device and the stirring device can work at a higher rotating speed, accidents caused by splashing gravel and water flow do not need to be worried about, and therefore higher cleaning efficiency can be obtained; therefore, time and occupied area are saved, safety is achieved, and noise can be effectively isolated. The problems that an existing gravel cleaning device is low in cleaning efficiency, large in occupied area, serious in noise pollution and the like are solved, and the gravel cleaning efficiency can be effectively improved.

The utility model discloses an aviation safety experience education device, relates to the technical field of education equipment, and solves the problems that good simulation experience cannot be performed on real self feelings when an airplane is in an accident, the motion bumping state of an airplane body and the real operation condition are not fully simulated when the airplane is in an air crash, and the experience experience is poor. And the problem that the experience feeling of experiencers is limited to a certain degree is solved. An aviation safety experience education device comprises a base; the base adopts a rectangular plate structure; a connecting shaft of a cylindrical structure is rotationally arranged at the top of the base. The left side and the right side of the top of the base are each fixedly provided with a first sliding rail. A second lead screw is rotationally arranged on the inner side of the first sliding rail. A second motor is fixedly arranged on one side of the first sliding rail. A first rack is slidably arranged on the top of the first sliding rail. The outer sides of the two ends of the connecting shaft are each sleeved with a first gear. Therefore, experiencers can have a more immersive feeling, and the effect of education experience can be improved.

The invention belongs to the technical field of batteries, and particularly relates to a frame type battery box body with good sealing performance and an assembling method thereof, the assembling method comprises two steps of obtaining parts of the frame type battery box body and assembling the frame type battery box body, and the frame type battery box body assembled by the method has good sealing performance on the aspect of structural design. And through the reasonable layout and connection mode of the supporting plate and the bottom protection plate, the overall stability and impact resistance of the box body are effectively enhanced. In the aspect of sealing performance, the first sealing piece and related bolt connection between the bottom protection plate and the frame, the riveting and bolt connection between the supporting plate and the frame and the bottom protection plate, and the sealing pieces are matched, so that the waterproof, dustproof, sound insulation and vibration isolation effects are greatly improved, external water vapor, dust and other impurities are effectively prevented from entering, the risks of battery short circuit, corrosion, poor heat dissipation and the like are reduced, and the service life is prolonged. Safe and stable operation of the battery is ensured.

The utility model discloses a large-suction-force dust collector, and relates to the technical field of dust collectors. Comprising a handle assembly and a dust collection assembly, the dust collection assembly is arranged at one end of the handle assembly, the handle assembly comprises a main machine shell, a main machine end cover is arranged in the main machine shell, a dust collection motor is arranged in the main machine end cover, the upper middle portion of the dust collection motor is sleeved with silencing cotton, and a motor support is arranged at the top of the main machine end cover; the top of the dust collection motor extends into the motor support and is provided with a positioning sleeve, a dust cup is arranged at the bottom of the main machine end cover, at least one dust collection pipe is arranged at the bottom of the dust cup, and the dust collection assembly comprises an upper cover and a water tank top cover arranged on one side of the upper cover. Noise generated when the dust collection motor works can be effectively isolated through the noise reduction cotton, meanwhile, the auxiliary damping effect can be achieved, vibration transmission generated when the dust collection motor works can be effectively reduced through the anti-vibration pad, a user can hold the dust collection motor more comfortably, and use is more convenient.

The utility model relates to the technical field of ships, in particular to a small-sized trailing suction dredger driven by hybrid power, which comprises a dredger body, the lower part of the right side of the dredger body is sequentially provided with a head side pusher and a ballast tank from left to right, and the upper part of the left side of the dredger body is symmetrically provided with trailing suction pipe devices; one output end of the main diesel engine is connected with a main engine gear box and an axle generator, the output end of the main engine gear box penetrates through the ship body and is provided with a controllable-pitch propeller, the other output end of the main diesel engine is connected with speed reduction connecting devices, and the output end of one speed reduction connecting device is connected with a dredge pump. And the output end of the other speed reduction connecting device is connected with a high-pressure flushing pump. The combined driving mode is adopted, single-harrow operation of the harrow suction pipe device can be achieved, single-harrow operation can be achieved at a port with narrow channel width without turning around, the total installed power of the whole ship is reduced, ship vibration and noise are physically isolated, the living comfort of personnel is improved, and the combined driving type harrow suction pipe device has good market prospects.

The application relates to the technical field of general control or regulation systems, and discloses a multi-device cooperative control method of a PCB pattern transfer production line, which comprises the following steps: calling a multi-dimensional process sensitivity coefficient matrix, stripping exposure error components and etching error components from nonlinear cumulative line errors output by a self-detection instrument; using a one-dimensional logic sliding window buffer to cache the etching error components of continuous substrates to calculate average dynamic deviation; comparing the average dynamic deviation with a control dead zone safety threshold value, and when the average dynamic deviation does not exceed the threshold value, a control loop enters a protective resting state for a spray pressure proportional regulating valve, and when the average dynamic deviation exceeds the threshold value, a discrete pressure compensation amount is calculated and output to the spray pressure proportional regulating valve. According to the application, feedback lag caused by long-distance transmission is eliminated through error cascade decomposition, mixed geometric deviation is restored to single process drift, random mechanical noise is isolated by means of dead zone control, surge of a regulating mechanism is avoided, and stable convergence of multi-device cascade process parameters is realized.

The utility model provides a noise reduction type oxygen generator, relates to oxygen generator technical field, including the casing, the inside of casing is provided with the soundproof frame, the inner wall of soundproof frame is distributed a plurality of sound-absorbing box, the inside of sound-absorbing box is provided with the soundproof cover, the inside bottom of soundproof cover is provided with the buffer damper, and the inside bottom of soundproof cover is provided with the buffer damper. An oxygen generator is arranged at one end of the buffer damper, a box door is arranged on the side face of the shell, a sound insulation plate is arranged on the side face of the box door, and the sound insulation plate is arranged on the side of the oxygen generator. According to the utility model, a plurality of buffering dampers are arranged at the bottom of the oxygen generator, so that a buffering effect is effectively provided for the oxygen generator, vibration and noise generated by the oxygen generator during working are favorably absorbed and reduced, the sound absorption box is favorable for absorbing the noise, and the sound insulation cover and the sound insulation frame are favorable for insulating the noise; the level of noise generated during operation of the oxygen generator is effectively reduced, interference of the noise to a user is reduced, and a quiet use environment is provided.

The invention discloses a liquid-cooled cabinet capable of preventing generation of condensate water, and relates to the technical field of liquid-cooled cabinets, the liquid-cooled cabinet comprises a case shell, an oil storage box is fixedly connected below the case shell, an equipment storage box is mounted in the case shell, an oil delivery pipe is communicated above the case shell, a screen is fixedly connected in the oil storage box, and the screen is fixedly connected in the equipment storage box. The outer side of the case shell is in sliding connection with a heat preservation plate, by automatically adjusting the vacuum distance between the heat preservation module and the cabinet, the constant temperature and humidity environment in the cabinet can be maintained, generation of condensate water is reduced, and meanwhile the stability and reliability of the equipment are improved; a vacuum environment is formed in the cabinet heat preservation module and the cabinet, so that heat transfer paths can be effectively reduced, heat is prevented from being lost in an air conduction and convection mode, the cooling efficiency can be improved, and meanwhile, generation of condensate water outside the cabinet can be prevented due to the fact that the temperature difference between the inside and the outside of the cabinet does not need to be maintained.

This invention relates to a fan frame noise reduction structure, comprising a frame having a top and a bottom, and an airflow channel in the middle of the frame extending from the top to the bottom. The airflow channel forms an air inlet and an air outlet at the top and bottom, respectively. A noise reduction zone is provided between the airflow channel and an outer edge of the frame in at least one area of ​​the frame. At least one noise reduction unit is provided on the noise reduction zone, located between the top and the bottom and not connected to the airflow channel. The at least one noise reduction unit has a cavity that is sealed between the top and the bottom and does not extend through the top and bottom, thereby isolating airflow noise and absorbing frame vibration and its noise.

The utility model discloses a circuit board structure for optimizing high-speed differential signal quality, which comprises a circuit board, n pairs of high-speed differential holes and 4m backflow ground holes, the high-speed differential holes and the backflow ground holes are arranged on the circuit board, the four backflow ground holes are uniformly arranged on the periphery of one pair of high-speed differential holes, and the number of the backflow ground holes is larger than that of the high-speed differential holes. GND copper sheets are laid outside the pair of high-speed differential holes, so that GND shielding cavities are formed around the high-speed differential holes, and power supply noise is isolated. According to the utility model, through the backflow ground hole layout and the special processing of the inner power supply layer, the stability and integrity of differential signal transmission are significantly improved, the backflow ground hole layout ensures that a complete circle is formed in the GND backflow direction, and signals can quickly find the nearest backflow path, thereby improving the backflow effect and reducing the cost. And two holes of a high-speed differential signal are subjected to complete ground wrapping treatment, so that an effective isolation barrier is formed, and the noise problem caused by a power supply can be effectively isolated.

The present invention belongs to the technical field of ball screws, and relates to an S-shaped internal circulation reverser assembly and installation method for a ball screw pair, comprising a screw, a nut, and a plurality of balls, wherein the nut is externally embedded on the screw, and the plurality of balls are arranged in a spiral raceway formed between the outer surface of the screw and the inner surface of the nut, and is characterized in that: a plurality of reverser mounting holes are axially arranged on the nut, and a reverser is respectively installed in each of the reverser mounting holes, and the two ends of the reverser are respectively connected to two adjacent spiral raceways to form a lead of ball circulation rolling; the positioning part of the reverser is matched with the limiting part arranged in the reverser mounting hole to realize the limiting setting of the reverser; the circumferential surface of the nut is provided with a sleeve by interference fit to radially limit the reverser. The present invention can reduce the difficulty of assembling the reverser, improve the structural strength and processing efficiency of the nut, prevent grease leakage, and reduce the overall noise of the ball screw pair.

The pneumatic brake structure for the rotary table comprises a brake shaft and a brake sleeve, and the brake shaft is fixedly installed between a flexible gear of a harmonic reducer and a main base disc of the rotary table. The brake sleeves are fixedly mounted on one side of a supporting seat of the rotary table, and the brake sleeves sleeve the brake shaft at intervals; the brake sleeve comprises a fixing ring and a friction ring, the friction ring is fixedly installed on the inner side of the fixing ring, a closed air bag can be formed between the fixing ring and the friction ring, the inner friction face of the friction ring is made of abrasion-resistant rubber, and an air connector communicated with the interior of the air bag is installed on the fixing ring. Compressed air is introduced into the air bag, so that the friction ring deforms to extrude the brake shaft to form braking. When faults and work faults occur, compressed air is used for pressurizing the friction ring, the friction ring deforms and tightly holds the brake shaft, the brake can be stopped immediately, loss is reduced, and safety is improved.

The utility model relates to the field of sound insulation, and discloses an expressway edge sound insulation fence which comprises a base, a second groove is formed in the middle side of the upper portion of the base, first grooves are formed in the left side and the right side of the upper portion of the base at equal intervals, a first protruding block is clamped in the first groove in the left side, and an inverted-T-shaped clamping plate is fixedly connected to the upper portion of the first protruding block. A second protruding block is clamped in the first groove in the right side, I-shaped clamping plates are fixedly connected to the upper portion of the second protruding block, a sound insulation mechanism is connected between the inverted-T-shaped clamping plates and the I-shaped clamping plates in a clamped mode, and third grooves are formed in the upper portions of the inverted-T-shaped clamping plates and the upper portions of the I-shaped clamping plates. Rapid assembly is achieved through cooperation of the base and other structures, the sound insulation effect is improved through sound insulation felt and sound absorption cotton in the sound insulation mechanism, the warning lamp and the energy mechanism are arranged on the inverted-T-shaped clamping plate, the motor rack drives the solar panel to supply energy, redundant electric energy can be used for other purposes, the assembly efficiency is improved, and functions are diversified.

The invention relates to the technical field of hybrid power vehicle charging control, in particular to a vehicle noise control method and system, a vehicle control unit and a vehicle. And the current electricity supplementing power needed by the vehicle at the current moment is obtained, and when the current electricity supplementing power is larger than the preset power value, a sound insulation baffle arranged at an engine of the vehicle is adjusted to reduce noise generated by the engine to the outside. The corresponding sound insulation baffle is arranged at the position of the engine of the vehicle, and when the current electricity supplementing power is larger than the preset power value, the sound insulation baffle arranged at the position of the engine of the vehicle is adjusted to isolate large noise generated when the electricity supplementing power is large, so that the purpose of isolating the noise generated in the electricity supplementing function is achieved.

The utility model discloses a diesel generating set for the breeding industry, which comprises a generating set body and a sound insulation mechanism detachably arranged outside the generating set body, the sound insulation mechanism comprises four groups of sound insulation frames; each sound insulation frame comprises a sliding base arranged on the corresponding diagonal line of the top of the generator set body, a transverse rod installed on the sliding base in a sliding mode, and a stand column arranged at the extending end of the transverse rod. A fixed seat is arranged on the outer side of the sliding seat, and a plurality of positioning holes are formed in the sliding seat; a positioning bolt for locking and fixing the transverse rod is inserted into the transverse rod; the two sides of the stand column are each provided with an installation groove distributed in the height direction of the stand column. And the four sound insulation plates are arranged, the two ends of each sound insulation plate are installed in the corresponding installation grooves in a sliding mode respectively, and at least one sound insulation plate is provided with a sound insulation door. By means of the design, the mute effect is better, selection and matching are free, the application range is wider, and the mute transformation difficulty and cost of an original product are lower.

The utility model discloses a pneumatic conveying anti-blocking explosion-proof ball filling device, which relates to the technical field of filling equipment, and comprises a filling box body and an air pressure component, the air pressure component is communicated with the filling box body, the top of the filling box body is provided with an opening, and the top opening of the filling box body is provided with a movable baffle plate. One end of the movable baffle is hinged to the opening, a movable arm is arranged at the side end of the movable baffle, an elastic component is arranged at the side end of the filling box body, one end of the movable arm is connected with the elastic component, and the elastic component generates pulling force to drive the movable arm to enable the movable baffle to seal the opening of the filling box body. According to the scheme, the explosion-proof balls are gradually released through the movable baffle, and meanwhile the explosion-proof balls can be prevented from being blocked in the filling process.

The utility model discloses centrifugal preparation equipment, and relates to the technical field of preparation equipment. The centrifugal preparation equipment comprises a supporting frame, a separation barrel is fixedly connected to the interior of the supporting frame, and a sealing cover is arranged on the separation barrel; a supporting ring is fixedly connected to the interior of the separation cylinder, and a separation inner container is rotationally connected to the interior of the supporting ring; a first discharging pipe is fixedly connected to the supporting frame, a second discharging pipe is rotationally connected to the bottom of the separating cylinder, and the second discharging pipe and the separating inner container are fixedly connected and communicate with each other; and a buffer mechanism is arranged on the inner wall of the separation cylinder. According to the centrifugal separation equipment, a buffer pad shrinks, a buffer plate is stressed, meanwhile, a buffer rod slides towards the interior of a buffer groove, a buffer spring is extruded, and therefore impact force is buffered through the elasticity of the buffer spring, and the situation that ores are directly thrown out to impact the interior of a separation barrel is avoided; meanwhile, noise is prevented from being generated in the separation process, so that the service life of equipment is prolonged.