Vacuum generator with sound reduction

Abstract

The utility model belongs to vacuum generator technical field, specifically discloses a vacuum generator of noise elimination and noise reduction, including machine body, one side fixedly connected with air inlet pipe of machine body, the other side fixedly connected with air outlet pipe of machine body, the side away from machine body of air outlet pipe is provided with the noise reduction pipe, the side away from machine body of air inlet pipe is provided with connecting block, one side fixedly connected with connecting pipe of connecting block, the inside of connecting block is equipped with built -in groove, the inside rotation is connected with pinion of built -in groove, the inside rotation is connected with the gear of built -in groove, through the cooperation of baffle and transmission groove, make it according to different negative pressure value requirement, real -time regulation air flow, satisfy the use demand of diversification scene, expand the application range of vacuum generator, improve the continuity and efficiency of production or operation process, reduce the negative pressure deviation caused by flow fluctuation simultaneously, improve the process stability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum generator technology, specifically to a noise-reducing vacuum generator. Background Technology

[0002] A vacuum generator is a new type of efficient, clean, economical, and small vacuum component that uses a positive pressure air source to generate negative pressure. This makes it very easy and convenient to obtain negative pressure in places where compressed air is available or where both positive and negative pressure are required in a pneumatic system. Vacuum generators are widely used in industrial automation in fields such as machinery, electronics, packaging, printing, plastics, and robotics.

[0003] A search revealed a Chinese patent publication number: CN220020603U, which provides a protective box and a vacuum generator body. The protective box has multiple buffer mechanisms corresponding to the vacuum generator body inside. An air inlet is fixedly connected to one side of the protective box, and an exhaust port is fixedly connected to the other side of the protective box.

[0004] Although the aforementioned patent can reduce noise, the negative pressure mentioned above still has the following problems: the air flow rate inside the existing vacuum generator is mostly fixed during use, which is inconvenient to quickly adjust the flow rate according to the negative pressure value required by different needs, and has certain limitations. Furthermore, the fixed flow rate vacuum generator can only work stably within a specific negative pressure range and cannot be adjusted according to needs. In view of the above situation, technical innovation is carried out on the basis of the existing device. Utility Model Content

[0005] The purpose of this invention is to provide a noise-reducing vacuum generator to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a noise-reducing vacuum generator, comprising a machine body, an air inlet pipe fixedly connected to one side of the machine body, an air outlet pipe fixedly connected to the other side of the machine body, a noise-reducing pipe provided on the side of the air outlet pipe away from the machine body, a connecting block provided on the side of the air inlet pipe away from the machine body, a connecting pipe fixedly connected to one side of the connecting block, an internal groove provided inside the connecting block, a small gear rotatably connected inside the internal groove, a large gear rotatably connected inside the internal groove, the large gear meshing with the small gear, a motor fixedly connected to the surface of the connecting block, the output end of the motor fixedly connected to one side of the small gear, and fixing components provided on the surfaces of the air inlet pipe and the air outlet pipe.

[0007] Preferably, the surface of the large gear has two transmission grooves, and the interior of each of the two transmission grooves is slidably connected to a limit block.

[0008] Preferably, each of the two limiting blocks has a sliding rod fixedly connected to one end. The connecting block has two sliding grooves inside, and the interior of each sliding groove is slidably connected to the surface of the two sliding rods. The end of each sliding rod away from the limiting block is fixedly connected to a baffle. The connecting block has a connecting groove inside, and the interior of the connecting groove is slidably connected to the surface of the baffle.

[0009] Preferably, the two fixing components include two fixing blocks, which are respectively fixedly connected to the surfaces of the air inlet pipe and the air outlet pipe. A power groove is provided inside the fixing block, and a plug rod is slidably connected inside the power groove. A spring is fixedly connected inside the power groove, and one end of the spring near the plug rod is fixedly connected to the surface of the plug rod.

[0010] Preferably, a square block is fixedly connected to both the noise reduction tube and the connecting block on the side closest to the machine body. The interior of the square block is connected to the interior of the noise reduction tube and the connecting block, respectively. A slot is provided inside the fixed block, and the interior of the slot matches the surface of the square block. A slot is provided on the surface of the square block, and the interior of the slot matches the surface of the insertion rod.

[0011] Preferably, a movable rod is fixedly connected to the top of the insertion rod, one end of the movable rod passes through the interior of the fixed block and extends to the exterior of the fixed block, a fixed groove is formed on the surface of the movable rod, and a lifting rod is slidably connected inside the fixed groove.

[0012] Preferably, a fixed plate is fixedly connected to the top of the machine body, a brake rod is slidably connected to the machine body, a threaded rod is threadedly connected to the inside of the fixed plate, one end of the threaded rod near the square block is rotatably connected to the surface of the brake rod, a corrugated tube sleeved on the surface of the threaded rod is fixedly connected to one end of the fixed plate, the end of the corrugated tube away from the fixed plate is fixedly connected to the surface of the brake rod, a rotating handle is rotatably connected to one end of the fixed plate, and one end of the rotating handle is fixedly connected to one end of the threaded rod.

[0013] Preferably, the surface of the movable rod is provided with a stop groove, and the interior of the stop groove is adapted to the surface of the brake rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This noise-reducing vacuum generator, through the cooperation of baffles and transmission grooves, can adjust the air flow in real time according to different negative pressure requirements, meet the needs of diverse scenarios, expand the application range of vacuum generators, improve the continuity and efficiency of production or operation processes, and at the same time reduce negative pressure deviation caused by flow fluctuations, thereby improving process stability.

[0015] 2. This noise-reducing vacuum generator, through the cooperation of the lifting rod and the slot, allows the connecting block or noise-reducing tube to be removed and fixed individually or simultaneously for replacement, effectively shortening downtime for maintenance, improving equipment utilization, reducing unnecessary disassembly, reducing interference with other parts of the equipment, and making operation more convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a noise reduction vacuum generator according to the present invention; Figure 2 This is a schematic diagram of the connecting block of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a schematic diagram of the slide bar of this utility model; Figure 5 This is a schematic diagram of the structure of the baffle of this utility model; Figure 6 This is a schematic diagram of the structure of the insertion rod of this utility model; Figure 7 This is a schematic diagram of the lifting rod of this utility model; Figure 8 This is a schematic diagram of the threaded rod of this utility model.

[0017] In the diagram: 1. Machine body; 2. Inlet pipe; 3. Outlet pipe; 4. Fixing block; 5. Connecting block; 6. Motor; 7. Connecting pipe; 8. Noise reduction pipe; 9. Movable rod; 10. Lifting rod; 11. Internal slot; 12. Large gear; 13. Transmission slot; 14. Small gear; 15. Limiting block; 16. Slide rod; 17. Slide groove; 18. Connecting groove; 19. Baffle; 20. Square block; 21. Slot; 22. Insert rod; 23. Power slot; 24. Spring; 25. Fixing slot; 26. Card slot; 27. Stop slot; 28. Brake rod; 29. ​​Fixing plate; 30. Threaded rod; 31. Bellows; 32. Rotating handle. Detailed Implementation

[0018] Please see Figures 1-8 The present invention provides a technical solution: a vacuum generator for noise reduction, comprising a machine body 1. The machine body 1 is an existing structure, which will not be described in detail here. An air inlet pipe 2 is fixedly connected to one side of the machine body 1, through which air is drawn into the interior of the machine body 1. An air outlet pipe 3 is fixedly connected to the other side of the machine body 1, through which the gas entering the interior of the machine body 1 is discharged. A noise reduction pipe 8 is provided on the side of the air outlet pipe 3 away from the machine body 1, which is used to reduce the noise of the discharged gas.

[0019] A connecting block 5 is provided on the side of the air intake pipe 2 away from the machine body 1. A connecting pipe 7 is fixedly connected to one side of the connecting block 5. An internal groove 11 is provided inside the connecting block 5. A small gear 14 is rotatably connected inside the internal groove 11. A large gear 12 is rotatably connected inside the internal groove 11. The large gear 12 and the small gear 14 are meshed together. A motor 6 is fixedly connected to the surface of the connecting block 5. The output end of the motor 6 is fixedly connected to one side of the small gear 14. By starting the motor 6, the small gear 14 drives the large gear 12 to rotate.

[0020] Two transmission grooves 13 are formed on the surface of the large gear 12. The transmission grooves 13 are arc-shaped. Limiting blocks 15 are slidably connected inside the two transmission grooves 13. A sliding rod 16 is fixedly connected to one end of each of the two limiting blocks 15. Two sliding grooves 17 are formed inside the connecting block 5. The interior of the two sliding grooves 17 is slidably connected to the surface of the two sliding rods 16 respectively. By rotating the transmission grooves 13, the limiting blocks 15 slide inside the transmission grooves 13. At the same time, the sliding of the limiting blocks 15 is limited by the sliding rods 16 at one end of the limiting blocks 15 sliding inside the sliding grooves 17.

[0021] Each of the two slide rods 16 is fixedly connected to a baffle 19 at the end away from the limiting block 15. Each of the two baffles 19 is provided with a sealing gasket on the side that is close to each other to prevent gas leakage. The connecting block 5 has a connecting groove 18 inside. The inside of the connecting groove 18 is slidably connected to the surface of the baffle 19. The two slide rods 16 slide relative to each other inside the two sliding grooves 17, which drives the two baffles 19 to slide relative to each other inside the connecting groove 18.

[0022] Both the intake pipe 2 and the exhaust pipe 3 are equipped with fixing components, each including two fixing blocks 4. The fixing blocks 4 are fixedly connected to the surfaces of the intake pipe 2 and the exhaust pipe 3, respectively. A power groove 23 is formed inside the fixing block 4, and a rod 22 is slidably connected inside the power groove 23. A spring 24 is fixedly connected inside the power groove 23, with one end of the spring 24 near the rod 22 fixedly connected to the surface of the rod 22. The movement of the rod 22 compresses and resets the spring 24. Square blocks 20 are fixedly connected to the sides of the noise reduction pipe 8 and the connecting block 5 near the machine body 1, respectively. The interiors of the square blocks 20 are connected to the surfaces of the noise reduction pipe 8 and the connecting block 5. The square block 20 is connected to the inside of the connecting block 5 and can be fitted onto the surface of the air inlet pipe 2 and the air outlet pipe 3. The inside of the square block 20 is provided with a sealing gasket to prevent gas leakage when fitted onto the surface of the air inlet pipe 2 and the air outlet pipe 3. The inside of the fixing block 4 is provided with a slot 26, which matches the surface of the square block 20. The surface of the square block 20 is provided with a slot 21, which matches the surface of the insert rod 22. The square block 20 is fixed by sliding the square block 20 into the slot 26 and then sliding the insert rod 22 into the slot 21.

[0023] A movable rod 9 is fixedly connected to the top of the insertion rod 22. One end of the movable rod 9 passes through the interior of the fixing block 4 and extends to the exterior of the fixing block 4. A fixing groove 25 is opened on the surface of the movable rod 9. Two fixing grooves 25 extend out of the sides of the two movable rods 9 respectively. A lifting rod 10 is slidably connected inside the fixing groove 25. A magnet is provided inside the fixing groove 25. A magnet is also provided on the surface of the lifting rod 10. By sliding the lifting rod 10 into the interior of the movable rod 9 through the fixing groove 25 opened on the side of the movable rod 9, the lifting rod 10 is fixed by the magnetic attraction between the magnets.

[0024] A fixed plate 29 is fixedly connected to the top of the machine body 1. A brake rod 28 is slidably connected to the machine body 1. A threaded rod 30 is threadedly connected inside the fixed plate 29. The end of the threaded rod 30 near the square block 20 is rotatably connected to the surface of the brake rod 28. A corrugated tube 31 is fixedly connected to one end of the fixed plate 29 and sleeved on the surface of the threaded rod 30. The corrugated tube 31 can protect the threaded rod 30 and prevent impurities from falling in. The end of the corrugated tube 31 away from the fixed plate 29 is fixedly connected to the surface of the brake rod 28. A rotating handle 32 is rotatably connected to one end of the fixed plate 29. One end of the rotating handle 32 is fixedly connected to one end of the threaded rod 30. By rotating the rotating handle 32, the threaded rod 30 is driven to rotate, and at the same time, the brake rod 28 is driven to slide on the top of the machine body 1. A stop groove 27 is opened on the surface of the movable rod 9. The inside of the stop groove 27 is adapted to the surface of the brake rod 28.

[0025] Among them, motor 6 is existing technology and will not be described in detail here. Matching motor 6 are connecting wires, power supply, microcontroller, etc., which are existing structures and will not be described in detail here.

[0026] Working principle: When the negative pressure needs to be adjusted in this type of noise-reducing vacuum generator, gas is input from the connecting pipe 7. By starting the motor 6, the small gear 14 is rotated, which in turn drives the large gear 12 to rotate. The large gear 12 drives the limiting block 15 inside the transmission groove 13 to rotate, and drives the slide rod 16 at one end of the limiting block 15 to slide inside the slide groove 17, thus limiting the sliding of the limiting block 15. This causes the baffle 19 on one side of the slide rod 16 to slide relative to each other inside the connecting groove 18, thereby changing the amount of gas that can flow. Then, the gas enters the interior of the vacuum generator through the air inlet pipe 2, expanding the applicable range of the vacuum generator.

[0027] When it is necessary to replace the noise reduction tube 8 or the connecting block 5 at the same time, first rotate the rotating handle 32 to drive the threaded rod 30 to rotate, and drive the brake rod 28 to slide on the top of the machine body 1, so that the brake rod 28 slides out of the stop groove 27, releasing the fixation of the movable rod 9. Then, pull the lifting rod 10 upward to drive the movable rod 9 to slide upward, and at the same time drive the insertion rod 22 to slide out of the slot 21, compressing the spring 24 and releasing the fixation of the square block 20. Then, replace the noise reduction tubes 8 and connecting blocks 5 on both sides at the same time, and slide the square block 20 back into the slot 26, and fit the square block 20 on the air intake. The surfaces of pipe 2 and outlet pipe 3 are sealed with gaskets inside the square block 20 to prevent gas leakage when it is fitted onto the surfaces of inlet pipe 2 and outlet pipe 3. Loosen the lifting rod 10 so that the elastic force of the spring 24 drives the insertion rod 22 to slide back into the slot 21 for fixation. When only the connecting block 5 or the noise reduction pipe 8 needs to be replaced, simply slide the lifting rod 10 out of the fixing groove 25 from the side for individual replacement. After replacement, rotate the rotating handle 32 to make the brake rod 28 re-fit with the inside of the stop groove 27, completing the secondary fixation of the movable rod 9 and preventing the insertion rod 22 from being unstable during machine body 1 vibration.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing vacuum generator, comprising a machine body (1), characterized in that: An air inlet pipe (2) is fixedly connected to one side of the machine body (1), and an air outlet pipe (3) is fixedly connected to the other side of the machine body (1). A noise reduction pipe (8) is provided on the side of the air outlet pipe (3) away from the machine body (1). A connecting block (5) is provided on the side of the air inlet pipe (2) away from the machine body (1). A connecting pipe (7) is fixedly connected to one side of the connecting block (5). An internal groove (11) is provided inside the connecting block (5). A small gear (14) is rotatably connected inside the internal groove (11). A large gear (12) is rotatably connected inside the internal groove (11). The large gear (12) meshes with the small gear (14). A motor (6) is fixedly connected to the surface of the connecting block (5). The output end of the motor (6) is fixedly connected to one side of the small gear (14). Fixing components are provided on the surfaces of the air inlet pipe (2) and the air outlet pipe (3).

2. The vacuum generator for noise reduction and silence reduction according to claim 1, characterized in that: The surface of the large gear (12) has two transmission grooves (13), and the interior of each of the two transmission grooves (13) is slidably connected to a limit block (15).

3. The vacuum generator for noise reduction and silence reduction according to claim 2, characterized in that: One end of each of the two limiting blocks (15) is fixedly connected to a sliding rod (16). The connecting block (5) has two sliding grooves (17) inside. The interior of the two sliding grooves (17) is slidably connected to the surfaces of the two sliding rods (16). The end of the sliding rod (16) away from the limiting block (15) is fixedly connected to a baffle (19). The connecting block (5) has a connecting groove (18) inside. The interior of the connecting groove (18) is slidably connected to the surface of the baffle (19).

4. The vacuum generator for noise reduction and silence reduction according to claim 3, characterized in that: The two fixing components include two fixing blocks (4), which are fixedly connected to the surfaces of the air inlet pipe (2) and the air outlet pipe (3) respectively. A power groove (23) is provided inside the fixing block (4), and a plug rod (22) is slidably connected inside the power groove (23). A spring (24) is fixedly connected inside the power groove (23), and one end of the spring (24) near the plug rod (22) is fixedly connected to the surface of the plug rod (22).

5. A noise-reducing vacuum generator according to claim 4, characterized in that: The noise reduction tube (8) and the connecting block (5) are both fixedly connected to a square block (20) on the side near the machine body (1). The interior of the square block (20) is connected to the interior of the noise reduction tube (8) and the connecting block (5) respectively. The fixed block (4) has a slot (26) inside. The interior of the slot (26) matches the surface of the square block (20). The surface of the square block (20) has a slot (21) inside. The interior of the slot (21) matches the surface of the insertion rod (22).

6. The vacuum generator for noise reduction and silence reduction according to claim 5, characterized in that: The top of the insertion rod (22) is fixedly connected to a movable rod (9). One end of the movable rod (9) passes through the interior of the fixed block (4) and extends to the exterior of the fixed block (4). A fixed groove (25) is provided on the surface of the movable rod (9). A lifting rod (10) is slidably connected inside the fixed groove (25).

7. A noise-reducing vacuum generator according to claim 6, characterized in that: A fixed plate (29) is fixedly connected to the top of the machine body (1). A brake rod (28) is slidably connected to the machine body (1). A threaded rod (30) is threadedly connected inside the fixed plate (29). The end of the threaded rod (30) near the square block (20) is rotatably connected to the surface of the brake rod (28). A corrugated tube (31) sleeved on the surface of the threaded rod (30) is fixedly connected to one end of the fixed plate (29). The end of the corrugated tube (31) away from the fixed plate (29) is fixedly connected to the surface of the brake rod (28). A rotating handle (32) is rotatably connected to one end of the fixed plate (29). One end of the rotating handle (32) is fixedly connected to one end of the threaded rod (30).

8. A noise-reducing vacuum generator according to claim 7, characterized in that: The surface of the movable rod (9) is provided with a stop groove (27), and the interior of the stop groove (27) is adapted to the surface of the brake rod (28).

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