Water ring compressor with backflow prevention function for acetylene production process
By installing an anti-backflow mechanism on the output pipe of the water ring compressor, automatic sealing is achieved using pressure difference and magnetic repulsion, which solves the problem of sudden pressure drop caused by acetylene backflow in acetylene production, ensuring production stability and equipment reliability.
Patent Information
- Application Number
- CN202520446475.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-14
AI Technical Summary
During acetylene production, a sudden malfunction of the water ring compressor caused acetylene backflow, resulting in a sharp drop in pressure in the outlet manifold, which triggered an emergency shutdown of the production unit and economic losses.
An anti-backflow mechanism is installed on the output pipe of the water ring compressor, including components such as a connecting pipe, hinge rod, movable disc, elastic element and magnet. It uses pressure difference and magnetic repulsion to achieve automatic sealing and prevent acetylene backflow.
It effectively prevents acetylene backflow, maintains stable outlet manifold pressure, avoids emergency load reduction or shutdown, reduces equipment size, extends seal life, protects moving discs, and improves equipment operational reliability.
Smart Images
Figure CN223854448U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water ring compressor technical field especially relates to a water ring compressor with anti -back flow function for acetylene production process. BACKGROUND
[0002] Water ring compressor is also called water ring vacuum pump, and the water ring compressor is internally provided with an eccentric rotor with fixed blades, and the water (liquid) is thrown to the stator wall during operation, and the water (liquid) forms a liquid ring concentric with the stator, and the liquid ring and the rotor blades together constitute a kind of rotary variable volume pump of variable volume.
[0003] In acetylene production process, the water ring compressor is needed to transport acetylene. In the acetylene production process, when a single water ring compressor suddenly fails to stop running, the pressure of the water ring compressor outlet header will drop sharply, and the acetylene will flow back to the inlet pipe through the water ring compressor outlet header pipe, causing the acetylene flow to drop sharply, which will cause the acetylene production device to stop running, and will cause great economic loss.
[0004] Therefore, the application provides a water ring compressor with anti-back flow function for acetylene production process, which is used to avoid the sudden back flow of acetylene and the sharp drop of outlet header pressure when power failure or fault occurs during the water ring compressor transporting acetylene. UTILITY MODEL CONTENTS
[0005] In view of the above-mentioned shortcomings of the prior art, the utility model aims at providing a water ring compressor with anti-back flow function for acetylene production process, which is used to solve the problem of sharp drop of outlet header pressure in the prior art.
[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides a water ring compressor with anti-back flow function for acetylene production process, which comprises:
[0007] A water ring compressor body is provided with an input pipe and an output pipe respectively, and the output pipe is provided with an anti-back flow mechanism;
[0008] The anti-back flow mechanism comprises a connecting pipe, and the two ends of the connecting pipe are provided with flanges;
[0009] The inside of the connecting pipe is provided with a hinged rod, the hinged rod is provided with a rotatable movable disc, the diameter of the movable disc is matched with the inner diameter of the connecting pipe, a traction limiting rod is arranged above the hinged rod, an elastic element is sleeved on the hinged rod, one end of the elastic element is lapped with the outer surface of the movable disc, and the other end of the elastic element is hooked on the traction limiting rod;
[0010] The inner wall of the connecting pipe is further provided with a limiting support ring, which is located below the movable disc to support the movable disc, and the movable disc can only rotate in the output direction of the output pipe.
[0011] Preferably, the movable disc comprises a first disc and a second disc, which are symmetrically arranged as semicircular disc bodies and are mutually attached at the connection;
[0012] The number of the hinged rods and elastic members is matched with the first disc and the second disc.
[0013] Preferably, the traction limiting rod is arranged between two hinged rods, and the end portions of the two elastic members are hooked and scraped with the outer surface of the traction limiting rod.
[0014] Preferably, the side of the first disc and the second disc facing the limiting support ring is provided with a sealing film, and the diameter of the sealing film is the same as the inner diameter of the connecting pipe.
[0015] The sealing film is a soft film.
[0016] Preferably, the sealing film is provided with a wave crease along the connection of the first disc and the second disc.
[0017] Preferably, the inside of the connecting pipe is provided with a buffer mechanism, which applies a buffer thrust to the movable disc.
[0018] Preferably, the buffer mechanism comprises a buffer disc, the diameter of the buffer disc is smaller than the inner diameter of the connecting pipe, and the outer surface of the buffer disc is provided with a support frame to support the buffer disc.
[0019] The side of the buffer disc facing the movable disc is provided with a second magnet, the side of the movable disc facing the buffer disc is provided with a first magnet, the magnetic poles of the second magnet and the first magnet facing each other are the same, and the installation positions are matched.
[0020] Preferably, the inner wall of the connecting pipe is provided with a traction sliding groove, the number of the traction sliding grooves is not less than two, and they are all located below the limiting support ring.
[0021] The number of the support frames is equal to the number of the traction sliding grooves.
[0022] All the support frames extend to the inside of the adjacent traction sliding grooves, and the support frames can slide in the inside of the traction sliding grooves.
[0023] Preferably, the number of the first magnets is two, and the two first magnets are respectively installed below the first disc and the second disc.
[0024] Preferably, the input pipe and the output pipe are all three-way pipes, and two of the three-way pipes are communicated with the inner cavity of the water ring compressor body.
[0025] As described above, the water ring compressor with anti-backflow function for acetylene production process has the following beneficial effects:
[0026] 1. The anti-backflow mechanism is arranged at the output pipe opening of the water ring compressor body, so that when power failure or fault occurs suddenly during the conveying of acetylene by the water ring compressor, the pressure in the output main pipeline is greater than the pressure at the output pipe opening, at this time, the anti-backflow mechanism is closed under the action of the pressure difference, and the communication between the output pipe opening and the output main pipeline is isolated, so that the sudden drop of the outlet main pipeline pressure caused by the backflow of acetylene is avoided, and emergency load reduction or shutdown of production is caused.
[0027] 2. The two parallel hinged rods are arranged in the connecting pipe to connect the first disc and the second disc, so that the space occupied by the opening and closing of the first disc and the second disc is greatly reduced, and the effect of reducing the size of the equipment is achieved.
[0028] 3. The sealing film is arranged at the bottom of the first disc and the second disc, and covers the gap at the connection between the first disc and the second disc, so that the gap caused by the wear of the first disc and the second disc during long-term use is avoided.
[0029] 4. The buffer disc is arranged in the connecting pipe and supported by the supporting frame, and the first magnet is arranged at the bottom of the first disc and the second disc, and the second magnet is arranged at the top of the buffer disc, and the first magnet and the second magnet are same polarity, when the water ring compressor body is damaged and loses pressure, the first disc and the second disc are closed under the action of the pressure and the elastic member, and the second magnet repels the first magnet, so that the impact of the first disc and the second disc on the limiting support ring is reduced, and the effect of protecting the movable disc is achieved.
[0030] Therefore, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF DRAWINGS
[0031] Figure 1 The structure of the utility model is shown.
[0032] Figure 2 The utility model is shown as an explosion diagram of the anti-backflow mechanism.
[0033] Figure 3 The structure of the utility model is shown as an explosion diagram of the anti-backflow mechanism.
[0034] Figure 4The structure of the anti-backflow mechanism is shown in the utility model.
[0035] Figure 5 The structure of the anti-backflow mechanism is shown in the utility model.
[0036] Figure 6 The structure of the movable disc is shown in the utility model.
[0037] Figure 7 The structure of the first magnet is shown in the utility model.
[0038] Element number explanation:
[0039] 1, water ring compressor main body; 2, input pipe; 3, output pipe;
[0040] 4, anti-backflow mechanism; 401, connecting pipe; 402, flange plate; 403, hinged rod; 404, traction limiting rod; 405, movable disc; 4051, first disc; 4052, second disc; 4053, sealing film; 4054, wave crease; 4055, first magnet; 406, elastic member; 407, limiting support ring; 408, traction sliding groove; 5, buffer mechanism; 501, buffer disc; 502, support frame; 503, second magnet. DETAILED DESCRIPTION
[0041] The following specific embodiments illustrate the implementation of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.
[0042] Please refer to Figures 1 to 7 It should be understood that the structure, proportion, size, etc. shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of the utility model, so they do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "up", "down", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, the change or adjustment of the relative relationship without substantial change of technical content is also considered as the implementation of the utility model.
[0043] For example Figures 1-3The utility model provides a water ring compressor with anti -back flow function for acetylene production process, including water ring compressor main part 1, the device in water ring compressor main part 1 is transmitted acetylene by the pressure of rotating work. Water ring compressor main part 1 is provided with input pipe 2 and output pipe 3 respectively, and the acetylene of outside is transported to the inside of water ring compressor main part 1 by being connected with input pipe 2, and is transmitted to the specified position from output pipe 3 after being pressurized by water ring compressor main part 1. Output pipe 3 is provided with anti -back flow mechanism 4, and anti -back flow mechanism 4 is used to close output pipe 3 when water ring compressor main part 1 is damaged and causes pressure loss, avoids the acetylene of the output of the normal water ring compressor main part 1 of remaining group from backflowing by damaging water ring compressor main part 1.
[0044] Specifically, the anti-back flow mechanism 4 includes a connecting pipe 401, and flanges 402 are arranged at both ends of the connecting pipe 401. A hinged rod 403 is arranged inside the connecting pipe 401, and a rotatable movable disc 405 is arranged on the hinged rod 403. When the movable disc 405 is subjected to pressure, it can rotate along the hinged rod 403, so that the channel inside the connecting pipe 401 is opened to outwardly transport acetylene. The diameter of the movable disc 405 is matched with the inner diameter of the connecting pipe 401, so as to improve the sealing performance of the movable disc 405 after being closed. A traction limiting rod 404 is arranged above the hinged rod 403, and an elastic member 406 is sleeved on the hinged rod 403. One end of the elastic member 406 is lapped with the outer surface of the movable disc 405, and the other end of the elastic member 406 is hooked on the traction limiting rod 404. When the water ring compressor main part 1 stops transporting acetylene or the transportation pressure is insufficient, the outlet header will provide pressure in the direction of the water ring compressor main part 1. At this time, the movable disc 405 returns to the initial position under the action of pressure and the traction force of the elastic member 406, so as to seal the cross section inside the connecting pipe 401.
[0045] The inner wall of the connecting pipe 401 is further provided with a limiting support ring 407, which is located below the movable disc 405 to support the movable disc 405, so that the movable disc 405 remains horizontal inside the connecting pipe 401 and can completely seal the inside of the connecting pipe 401. The movable disc 405 can only rotate in the output direction of the output pipe 3, so as to avoid the movable disc 405 from reversely rotating and failing to seal when the pressure in the direction of the outlet header is too large.
[0046] As Figure 2As shown in the drawings, in some embodiments, the utility model discloses a movable disc 405, which comprises a first disc 4051 and a second disc 4052, the first disc 4051 and the second disc 4052 are semicircular disc bodies arranged symmetrically, and the connecting portions are attached to each other. When the outer surfaces of the first disc 4051 and the second disc 4052 are flush and the connecting portions are flush, the inside of the connecting pipe 401 is sealed. When the first disc 4051 and the second disc 4052 have an angle difference, the inside of the connecting pipe 401 can pass through acetylene. Because the first disc 4051 and the second disc 4052 are both semicircular, the rotating radius required when opening and closing is small, and a large amount of equipment space can be saved. The number of the hinged rods 403 and the elastic members 406 is matched with the first disc 4051 and the second disc 4052. When the first disc 4051 and the second disc 4052 lose the acetylene pressure in the direction of the water ring compressor main body 1, the first disc 4051 and the second disc 4052 will be reversely rotated along the hinged rods 403 under the traction of the elastic members 406 to close the inside of the connecting pipe 401.
[0047] As shown in the drawings, Figure 3 and Figure 5 As shown in the drawings, in some embodiments, the utility model discloses a movable disc 405, which comprises a first disc 4051 and a second disc 4052, the first disc 4051 and the second disc 4052 are semicircular disc bodies arranged symmetrically, and the connecting portions are attached to each other. When the outer surfaces of the first disc 4051 and the second disc 4052 are flush and the connecting portions are flush, the inside of the connecting pipe 401 is sealed. When the first disc 4051 and the second disc 4052 have an angle difference, the inside of the connecting pipe 401 can pass through acetylene. Because the first disc 4051 and the second disc 4052 are both semicircular, the rotating radius required when opening and closing is small, and a large amount of equipment space can be saved. The number of the hinged rods 403 and the elastic members 406 is matched with the first disc 4051 and the second disc 4052. When the first disc 4051 and the second disc 4052 lose the acetylene pressure in the direction of the water ring compressor main body 1, the first disc 4051 and the second disc 4052 will be reversely rotated along the hinged rods 403 under the traction of the elastic members 406 to close the inside of the connecting pipe 401.
[0048] As shown in the drawings, Figure 6 As shown in the drawings, in some embodiments, the utility model discloses a movable disc 405, which comprises a first disc 4051 and a second disc 4052, the first disc 4051 and the second disc 4052 are semicircular disc bodies arranged symmetrically, and the connecting portions are attached to each other. When the outer surfaces of the first disc 4051 and the second disc 4052 are flush and the connecting portions are flush, the inside of the connecting pipe 401 is sealed. When the first disc 4051 and the second disc 4052 have an angle difference, the inside of the connecting pipe 401 can pass through acetylene. Because the first disc 4051 and the second disc 4052 are both semicircular, the rotating radius required when opening and closing is small, and a large amount of equipment space can be saved. The number of the hinged rods 403 and the elastic members 406 is matched with the first disc 4051 and the second disc 4052. When the first disc 4051 and the second disc 4052 lose the acetylene pressure in the direction of the water ring compressor main body 1, the first disc 4051 and the second disc 4052 will be reversely rotated along the hinged rods 403 under the traction of the elastic members 406 to close the inside of the connecting pipe 401.
[0049] As shown in the drawings, Figure 6As shown, in some embodiments, the sealing film 4053 is provided with a wave crease 4054 at the joint of the first disc 4051 and the second disc 4052. When rotation occurs between the first disc 4051 and the second disc 4052, the sealing film 4053 will be folded, and the folding tension is easy to cause damage to the sealing film 4053. The wave crease 4054 can increase the ductility of the sealing film 4053 and prolong the service life of the sealing film 4053.
[0050] As shown in Figure 4 , Figure 5 and Figure 7 , in some embodiments, the connecting pipe 401 is internally provided with a buffer mechanism 5, and the buffer mechanism 5 applies a buffer thrust to the movable disc 405. When the water ring compressor body 1 is damaged, the first disc 4051 and the second disc 4052 will be quickly closed under the combined action of the pressure and the elastic member 406. The quick closing will cause a large impact force between the first disc 4051 and the second disc 4052 and the limiting support ring 407, and the impact force will cause the first disc 4051 and the second disc 4052 to be easily deformed. Therefore, when the first disc 4051 and the second disc 4052 are quickly closed, the buffer mechanism 5 applies a counterforce to the first disc 4051 and the second disc 4052 to slow down the impact force when the impact occurs, thereby protecting the first disc 4051 and the second disc 4052.
[0051] Specifically, the buffer mechanism 5 includes a buffer disc 501, and the diameter of the buffer disc 501 is smaller than the inner diameter of the connecting pipe 401. When the water ring compressor body 1 transports acetylene, the acetylene is transmitted out from the gap between the buffer disc 501 and the inner wall of the connecting pipe 401, thereby avoiding obstruction. The outer surface of the buffer disc 501 is provided with a support frame 502 to support the buffer disc 501.
[0052] The buffer disc 501 is provided with a second magnet 503 on the side facing the movable disc 405, and the movable disc 405 is provided with a first magnet 4055 on the side facing the buffer disc 501. The second magnet 503 and the first magnet 4055 have the same magnetic pole on the facing side and are adaptively installed. Therefore, the second magnet 503 applies a repulsive magnetic force to the first magnet 4055. During the closing process of the first disc 4051 and the second disc 4052 under the traction of the elastic member 406, the first magnet 4055 is close to the second magnet 503, and the greater the repulsive force is to counterbalance the elasticity of the elastic member 406, so as to slow down the closing speed of the first disc 4051 and the second disc 4052. After the first disc 4051 and the second disc 4052 are completely closed, the repulsive force provided by the second magnet 503 and the elastic force of the elastic member 406 are balanced, thereby ensuring that the first disc 4051 and the second disc 4052 can be completely closed.
[0053] As Figure 5 shown, in some embodiments, the inner wall of the connecting pipe 401 is provided with a traction chute 408, the number of traction chutes 408 is not less than two, and they are all located below the limiting support ring 407. The number of support frames 502 is equal to the number of traction chutes 408. All support frames 502 extend into the inside of the adjacent traction chute 408, and the angle of the buffer disc 501 is limited by the cooperation of the multiple traction chutes 408 and the support frames 502, so as to avoid the rotation of the buffer disc 501 under the repulsive force of the second magnet 503. And the support frame 502 can slide in the inside of the traction chute 408.
[0054] Through the above technical solution, when conveying acetylene, the buffer disc 501 is floated upward by the pressure of acetylene, and is close to the first disc 4051 and the second disc 4052, and the first disc 4051 and the second disc 4052 are pressed by the magnetic repulsion force and the flow pressure of acetylene, so as to improve the sensitivity of the opening of the first disc 4051 and the second disc 4052. When the first disc 4051 and the second disc 4052 are subjected to reverse pressure, the first disc 4051 and the second disc 4052 will extrude the buffer disc 501 downward, so that the buffer disc 501 falls. At this time, the buffer disc 501 will also be subjected to a part of the pressure of the acetylene conveyed by the water ring compressor body 1, so that the buffer disc 501 slowly falls. In this process, the second magnet 503 will maintain the thrust force on the first magnet 4055, slow down the closing speed of the first disc 4051 and the second disc 4052, and reduce the impact force, until the buffer disc 501 stops falling and the first disc 4051 and the second disc 4052 are completely closed and remain stable.
[0055] As Figure 7 shown, in some embodiments, the number of the first magnets 4055 is two, and the two first magnets 4055 are respectively installed below the first disc 4051 and the second disc 4052. By setting two first magnets 4055, the first disc 4051 and the second disc 4052 are subjected to repulsive force of the second magnet 503 respectively, and are buffered respectively. The uniformity of the repulsive force provided by the second magnet 503 is improved.
[0056] As Figure 1 shown, in some embodiments, the input pipe 2 and the output pipe 3 are all three-way pipes, and two ways of the three-way pipes are in communication with the inner cavity of the water ring compressor body 1. When inputting acetylene, the two ports of the input pipe 2 convey acetylene to different positions inside the water ring compressor body 1 respectively, so as to improve the uniformity of the acetylene entering and reduce the pressure inside the water ring compressor body 1. When outputting acetylene, the two ports of the output pipe 3 output acetylene outward, so as to improve the output efficiency.
[0057] The utility model discloses a specific use process as follows:
[0058] The anti-backflow mechanism 4 is connected with the supply equipment of acetylene through the input pipe 2, and one end of the anti-backflow mechanism 4 is installed at the port part of the output pipe 3, and the equipment needing acetylene is connected with the other end of the anti-backflow mechanism 4.
[0059] The acetylene is driven to spread out through the output pipe 3 by the working of the water ring compressor main body 1, and the movable disc 405 is driven to spread out, so that the acetylene is transmitted to the required equipment.
[0060] When the water ring compressor main body 1 is damaged and cannot normally supply acetylene, the pressure in the output main pipe will act on the movable disc 405 in the reverse direction, so that the movable disc 405 cuts off the channel in the connecting pipe 401, avoids the reverse transmission of acetylene to the inside of the water ring compressor main body 1, maintains the pressure in the output main pipe, and normally transports acetylene by the remaining water ring compressor main body 1.
[0061] In summary, the utility model discloses an acetylene production process with a water ring compressor with an anti-backflow function, which is characterized in that the anti-backflow mechanism 4 is arranged at the output pipe 3 of the water ring compressor main body 1.
[0062] The utility model discloses a first disc 4051 and a second disc 4052 are connected through the two parallel hinged rods 403 in the connecting pipe 401, and the space occupied by the opening and closing of the first disc 4051 and the second disc 4052 is greatly reduced in the use process, so that the effect of reducing the size of the equipment is achieved.
[0063] The utility model discloses a first disc 4051 and a second disc 4052 are connected through the two parallel hinged rods 403 in the connecting pipe 401, and the space occupied by the opening and closing of the first disc 4051 and the second disc 4052 is greatly reduced in the use process, so that the effect of reducing the size of the equipment is achieved.
[0064] The utility model discloses a buffering disc 501 is arranged in the inside of connecting pipe 401, and buffering disc 501 is supported through support frame 502, and first magnet 4055 is arranged at the bottom of first disc 4051 and second disc 4052, and second magnet 503 is arranged at the top of buffering disc 501, and when the water ring compressor body 1 is damaged and pressure loss happens, first disc 4051 and second disc 4052 close under the action of pressure and elastic part 406, and second magnet 503 repels first magnet 4055, and the force of first disc 4051 and second disc 4052 impacting limiting support ring 407 is reduced, and the effect of protecting movable disc 405 is achieved.
[0065] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.
[0066] The above-mentioned embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used for limiting the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.
Claims
1. A water ring compressor with a backflow prevention function for an ethyne production process, characterized by, Include: Water ring compressor body (1), the water ring compressor body (1) is provided with input pipe (2) and output pipe (3) respectively, the output pipe (3) is provided with anti-backflow mechanism (4); The anti-backflow mechanism (4) includes a connecting pipe (401), both ends of the connecting pipe (401) are provided with flanges (402); The inside of the connecting pipe (401) is provided with a hinged rod (403), the hinged rod (403) is provided with a rotatable movable disc (405), the diameter of the movable disc (405) is matched with the inner diameter of the connecting pipe (401), a traction limiting rod (404) is arranged above the hinged rod (403), a spring (406) is sleeved on the hinged rod (403), one end of the spring (406) is overlapped with the outer surface of the movable disc (405), the other end of the spring (406) is hooked on the traction limiting rod (404); The inner wall of the connecting pipe (401) is further provided with a limiting support ring (407), the limiting support ring (407) is located below the movable disc (405) and supports the movable disc (405), and the movable disc (405) can only rotate in the output direction of the output pipe (3).
2. The water ring compressor with anti-backflow function for acetylene production process according to claim 1, characterized in that: The movable disc (405) includes a first disc (4051) and a second disc (4052), the first disc (4051) and the second disc (4052) are symmetrically arranged as semicircular plates, and the connecting portions are mutually adhered; The number of the hinged rod (403) and the spring (406) is matched with the first disc (4051) and the second disc (4052).
3. The water ring compressor with anti-backflow function for acetylene production process according to claim 2, characterized in that: The traction limiting rod (404) is arranged between the two hinged rods (403), and the end portions of the two springs (406) are hookingly connected with the outer surface of the traction limiting rod (404).
4. The water ring compressor with anti-backflow function for acetylene production process according to claim 3, characterized in that: The side of the first disc (4051) and the second disc (4052) facing the limiting support ring (407) is provided with a sealing film (4053), and the diameter of the sealing film (4053) is the same as the inner diameter of the connecting pipe (401); The sealing film (4053) is a soft film.
5. The water ring compressor with anti-backflow function for acetylene production process according to claim 4, characterized in that: The sealing film (4053) is provided with a wave crease (4054) along the connecting portion of the first disc (4051) and the second disc (4052).
6. The water ring compressor with anti-backflow function for acetylene production process according to claim 4, characterized in that: The inside of the connecting pipe (401) is provided with a buffer mechanism (5), and the buffer mechanism (5) applies a buffer thrust to the movable disc (405).
7. The water ring compressor with anti-backflow function for acetylene production process according to claim 6, characterized in that: The buffer mechanism (5) includes a buffer disc (501), the diameter of the buffer disc (501) is smaller than the inner diameter of the connecting pipe (401), and the outer surface of the buffer disc (501) is provided with a support frame (502) to support the buffer disc (501); The side of the buffer disc (501) facing the movable disc (405) is provided with a second magnet (503), the side of the movable disc (405) facing the buffer disc (501) is provided with a first magnet (4055), the polarities of the second magnet (503) and the first magnet (4055) facing each other are the same, and the installation positions are matched.
8. The water ring compressor with anti-backflow function for acetylene production process according to claim 7, characterized in that: The inner wall of the connecting pipe (401) is provided with traction sliding grooves (408), the number of the traction sliding grooves (408) is not less than two, and the traction sliding grooves (408) are all located below the limiting support rings (407); The number of the support frames (502) is equal to the number of the traction sliding grooves (408); All the support frames (502) extend to the inside of the adjacent traction sliding grooves (408), and the support frames (502) can slide in the traction sliding grooves (408).
9. The water ring compressor with anti-backflow function for acetylene production process according to claim 8, characterized in that: The number of the first magnets (4055) is two, and the two first magnets (4055) are respectively installed below the first disc (4051) and the second disc (4052).
10. The water ring compressor with anti-backflow function for acetylene production process according to claim 1, characterized in that: The input pipe (2) and the output pipe (3) are all three-way pipes, and two ways of the three-way pipes are communicated with the inner cavity of the water ring compressor body (1).