Exhaust valve with impurity separator

Abstract

The invention belongs to the technical field of exhaust valves, and particularly relates to an exhaust valve with an impurity separator, which comprises an exhaust valve body, an accommodating part for accommodating a floating ball is arranged in the exhaust valve body, a fixing ring is fixedly mounted in the exhaust valve body, and an extensible filter screen is arranged in the fixing ring. A positioning ring is fixedly installed on the fixing ring and arranged above the filter screen, a stretching assembly is arranged in the positioning ring and comprises a jacking rod and a pull rope, the jacking rod is elastically installed in the positioning ring, the pull rope is arranged on the inner wall of the fixing ring, one end of the pull rope is connected with the jacking rod, and the other end of the pull rope is connected with the filter screen. A plurality of stretching assemblies are arranged, a transmission rod is rotatably mounted in the fixing ring, a placement box is fixedly mounted on the outer wall of the transmission rod, and impurities in water are blocked and discharged, so that the impurities attached to the floating ball are effectively reduced, and the exhaust efficiency can be improved while the lifting stability of the floating ball is ensured.

Description

Technical Field

[0001] This invention belongs to the field of exhaust valve technology, specifically an exhaust valve with an impurity separator. Background Technology

[0002] An air release valve is an automatic control device used in pipelines or sealed containers. Its main function is to release accumulated air or other gases to ensure the normal operation of the system. In liquid transportation systems (such as water supply and heating pipelines), it can automatically release trapped air to prevent air resistance from affecting water flow efficiency or causing equipment cavitation. In addition, air release valves can also introduce air when the system is draining liquid to prevent pipeline deformation or damage caused by vacuum. Its structure typically includes float type, lever type, or thermal type.

[0003] For example, in common float-type air release valves, during use in scenarios such as municipal water supply and industrial circulating water, the water quality may contain a lot of suspended solids and impurities (silt, fibers, etc.). These impurities can easily adhere to the float or valve seat, causing the float to get stuck and unable to rise and fall normally, affecting the air release function or even causing the valve to fail. In addition, impurities may also wear down the valve seat sealing surface, causing the valve to not close tightly, resulting in water or air leakage and reducing system efficiency.

[0004] Therefore, the present invention provides an exhaust valve with an impurity separator. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: the exhaust valve with impurity separator of the present invention includes an exhaust valve body, wherein the exhaust valve body is provided with a receiving part for accommodating a float.

[0007] A fixing ring is fixedly installed inside the exhaust valve body, an extendable filter screen is provided inside the fixing ring, and a positioning ring is fixedly installed on the fixing ring, with the positioning ring positioned above the filter screen.

[0008] The positioning ring is provided with a tensioning assembly, which includes a top pressure rod and a pull rope. The top pressure rod is elastically installed inside the positioning ring, and the pull rope is disposed on the inner wall of the fixed ring. One end of the pull rope is connected to the top pressure rod, and the other end is connected to the filter screen. Multiple tensioning assemblies are provided.

[0009] A transmission rod is rotatably mounted inside the fixed ring, and a mounting box is fixedly mounted on the outer wall of the transmission rod. The top of the mounting box is attached to the bottom of the filter screen. A feed cylinder is rotatably mounted inside the mounting box, and a first auger is rotatably mounted inside the feed cylinder. Both the feed cylinder and the mounting box have openings.

[0010] A drive shaft is slidably mounted inside the drive rod. One end of the drive shaft is fixedly connected to the float. A tension spring is provided between the float and the receiving part.

[0011] The inner wall of the transmission rod is provided with a spiral groove, and a guide rod is fixedly installed on the outer wall of the transmission shaft, with one end of the guide rod extending into the interior of the spiral groove.

[0012] The transmission rod has a cavity inside, one end of the transmission shaft extends into the cavity and a piston is fixedly installed thereon, and the transmission shaft is equipped with a back spray pipe and a water inlet pipe.

[0013] One end of the back spray pipe extends into the cavity, and the other end extends above the filter screen. A water hole is provided at the end of the back spray pipe facing the filter screen.

[0014] One end of the water inlet pipe extends into the cavity, and the other end passes through the transmission rod and extends to the bottom of the filter screen;

[0015] Both the water inlet pipe and the back spray pipe are equipped with one-way valves.

[0016] A rotating ring is fixedly installed at the top end of the reverse nozzle, and an arc-shaped push block for pushing the top pressure rod toward the transmission rod is fixedly installed at the top end of the rotating ring. Multiple arc-shaped push blocks are provided.

[0017] The exhaust valve body is fixedly installed with a discharge bend, the transmission rod is rotatably installed at the top of the discharge bend, the transmission rod has a discharge chamber that communicates with the inner cavity of the discharge cylinder, the discharge bend is provided with a second auger, the output shaft of the first auger is fixedly installed with a first bevel gear, and the output shaft of the second auger is fixedly installed with a second bevel gear that meshes with the first bevel gear.

[0018] A transmission block is fixedly installed on one side of the feeding cylinder. The transmission block is connected to the placement box by a torsion spring. A sector gear is fixedly installed on the transmission block. A first toothed ring that meshes with the sector gear is fixedly installed at the bottom end of the fixing ring.

[0019] The inner wall of the exhaust valve body is provided with a sliding groove, and a rotating gear is provided inside the sliding groove. A second toothed ring that meshes with the rotating gear is fixedly installed inside the sliding groove. A ratchet is rotatably installed inside the rotating gear. A ratchet bar for blocking the ratchet is elastically installed inside the rotating gear. The output shaft of the first auger away from the first bevel gear extends through the transmission block into the interior of the sliding groove and is fixedly connected to the ratchet.

[0020] The beneficial effects of this invention are as follows:

[0021] 1. The exhaust valve with impurity separator described in this invention uses a float that moves with the liquid level to drive a transmission shaft to slide within a transmission rod. The transmission rod rotates through the cooperation of a spiral groove and a guide rod, which in turn causes the mounting box to rotate at the bottom of the filter screen to scrape off impurities. Simultaneously, a pressure rod drives a pull rope to move synchronously and pulls the filter screen, causing it to deform. Shear force is generated between the pore wall and the impurities, breaking the adhesion between the impurities and the filter screen, loosening the impurities embedded in the pores, and ensuring the permeability of the mesh. By blocking and discharging impurities in the water, it effectively reduces the impurities attached to the float, ensuring stable float movement while also improving exhaust efficiency.

[0022] 2. The exhaust valve with impurity separator described in this invention uses changes in the internal air pressure of the exhaust valve body to cause the valve ball to drive the transmission shaft to slide inside the transmission rod, thereby realizing the reciprocating motion of the piston in the cavity. This causes the water inlet pipe and the back spray pipe to form a directional water flow, which performs high-pressure backwashing from above the filter screen. Combined with the deformation of the mesh, it forms a shearing force on the impurities embedded in the pores, which can effectively destroy the adhesion between the impurities and the filter screen, allowing even deep-seated and sticky impurities to loosen and fall off. This makes it easier for the mounting box to further remove impurities from the filter screen, making the exhaust system more stable. Attached Figure Description

[0023] The invention will now be further described with reference to the accompanying drawings.

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a cross-sectional view of the exhaust valve body in this invention;

[0026] Figure 3 This is a schematic diagram of the structure of the waste removal bend in this invention;

[0027] Figure 4 In this invention Figure 3 Enlarged view of point A in the image;

[0028] Figure 5 In this invention Figure 3 Enlarged view of point B in the image;

[0029] Figure 6 This is a cross-sectional view of the transmission rod in this invention;

[0030] Figure 7 In this invention Figure 6 Enlarged view of point C in the image;

[0031] Figure 8 In this invention Figure 6 Enlarged view of point D in the image;

[0032] Figure 9This is a schematic diagram of the structure of the waste delivery cylinder in this invention.

[0033] In the diagram: 1. Exhaust valve body; 2. Receptacle; 3. Float; 4. Drive shaft; 5. Drive rod; 6. Discharge bend; 7. Filter screen; 8. Positioning ring; 9. Fixing ring; 10. Spiral groove; 11. Guide rod; 12. Piston; 13. Cavity; 14. Rotating ring; 15. Arc-shaped push block; 16. Top pressure rod; 17. Pull rope; 18. Second auger; 19. Housing box; 20. Discharge cylinder; 21. First auger; 22. First gear ring; 23. Sector gear; 24. Rotating gear; 25. Second gear ring; 26. Sliding groove; 27. Water inlet pipe; 28. Backflow nozzle; 29. ​​First bevel gear; 30. Second bevel gear; 31. Drive block; 32. Discharge chamber; 33. Ratchet; 34. Ratchet. Detailed Implementation

[0034] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0035] like Figures 1 to 9 As shown, an exhaust valve with an impurity separator according to an embodiment of the present invention includes an exhaust valve body 1. The exhaust valve body 1 has a receiving part 2 for accommodating a float 3. The position of the float 3 in the receiving part 2 is controlled by the liquid level to achieve exhaust. The specific principle is a technical means known to those skilled in the art and will not be described in detail here.

[0036] A fixing ring 9 is fixedly installed inside the exhaust valve body 1. An extendable filter screen 7 is provided inside the fixing ring 9. A positioning ring 8 is fixedly installed on the fixing ring 9 and is positioned above the filter screen 7.

[0037] The positioning ring 8 is equipped with a tensioning assembly, which includes a top pressure rod 16 and a pull rope 17. The top pressure rod 16 is elastically installed inside the positioning ring 8, and the pull rope 17 is set on the inner wall of the fixed ring 9. One end of the pull rope 17 is connected to the top pressure rod 16, and the other end is connected to the filter screen 7. Multiple tensioning assemblies are provided.

[0038] Multiple tensioning components are arranged in a ring at equal intervals inside the positioning ring 8. When the top pressure rod 16 slides away from the center of the filter screen 7, the top pressure rod 16 will drive the pull rope 17 to move synchronously and pull the filter screen 7, causing the filter screen 7 to deform. By applying a unidirectional or radial tensile force to the filter screen 7, the stretchable filter screen 7 (such as nylon or polyester) will undergo elastic deformation. When the mesh shape changes, the inner wall will squeeze the impurities stuck in the holes. A small shear force will be generated between the hole wall and the impurities, which can break the adhesion between the impurities and the filter screen 7. Under the combined action of squeezing and shearing forces, the impurities embedded in the holes become loose, which helps to fall off under the impact of gravity or subsequent water flow, thereby restoring the permeability of the mesh. By blocking impurities in the water, the impurities attached to the float 3 are reduced, ensuring the stability of the rise and fall of the float 3, thereby improving the system efficiency.

[0039] A transmission rod 5 is rotatably installed inside the fixed ring 9. A housing box 19 is fixedly installed on the outer wall of the transmission rod 5. The top of the housing box 19 is attached to the bottom of the filter screen 7. A waste delivery cylinder 20 is rotatably installed inside the housing box 19. A first auger 21 is rotatably installed inside the waste delivery cylinder 20. Both the waste delivery cylinder 20 and the housing box 19 have openings.

[0040] The opening at the top of the housing box 19 makes the top width of the housing box 19 smaller than the bottom width. Therefore, when the housing box 19 scrapes away the impurities filtered at the bottom of the filter screen 7, the impurities will fall directly into the housing box 19 through the opening. The opening on the impurity delivery cylinder 20 allows the impurities to enter the impurity delivery cylinder 20 when they fall into the housing box 19. The impurities can then be transported by the first auger 21. Since the impurity delivery cylinder 20 is rotatably installed inside the housing box 19, when the impurity delivery cylinder 20 rotates and rotates the opening into the housing box 19, water or impurities inside the exhaust valve body 1 cannot enter the impurity delivery cylinder 20.

[0041] The top of the placement box 19 is provided with an inclined bevel. When the transmission rod 5 drives the placement box 19 to rotate counterclockwise at the bottom of the filter screen 7, the openings of both the placement box 19 and the waste delivery cylinder 20 face the filter screen 7. When rotating clockwise, the waste delivery cylinder 20 will rotate inside the placement box 19 and close its opening.

[0042] In a preferred embodiment of the present invention, a transmission shaft 4 is slidably installed inside the transmission rod 5, one end of the transmission shaft 4 is fixedly connected to the float 3, and a tension spring is provided between the float 3 and the receiving part 2.

[0043] The inner wall of the transmission rod 5 is provided with a spiral groove 10, and the outer wall of the transmission shaft 4 is fixedly installed with a guide rod 11, one end of which extends into the interior of the spiral groove 10.

[0044] When the air pressure inside the exhaust valve body 1 is high, it will push the liquid surface, causing it to descend inside the exhaust valve body 1. At the same time, the stretched spring releases elastic potential energy, causing the float 3 to slide downwards. Simultaneously, it drives the transmission shaft 4 to slide downwards inside the transmission rod 5. Through the cooperation of the spiral groove 10 and the guide rod 11, the transmission rod 5 is controlled to rotate inside the fixed ring 9. At this time, the transmission rod 5 can drive the mounting box 19 to rotate counterclockwise at the bottom of the filter screen 7, and scrape off the impurities at the bottom of the filter screen 7.

[0045] When the gas inside the exhaust valve body 1 is discharged, the liquid level will also rise. Under the action of buoyancy, the float 3 drives the drive shaft 4 to slide upward, stretching the spring to deform and store elastic potential energy. When the drive shaft 4 slides upward inside the drive rod 5, it can drive the drive rod 5 to rotate clockwise through the cooperation of the spiral groove 10 and the guide rod 11.

[0046] In a preferred embodiment of the present invention, the transmission rod 5 has a cavity 13 inside, one end of the transmission shaft 4 extends into the cavity 13 and is fixedly mounted with a piston 12, and the transmission shaft 4 is provided with a back spray pipe 28 and a water inlet pipe 27.

[0047] One end of the back spray pipe 28 extends into the cavity 13, and the other end extends above the filter screen 7. A water hole is provided at the end of the back spray pipe 28 facing the filter screen 7.

[0048] One end of the water inlet pipe 27 extends into the cavity 13, and the other end passes through the transmission rod 5 and extends to the bottom of the filter screen 7;

[0049] Both the inlet pipe 27 and the back spray pipe 28 are equipped with one-way valves.

[0050] The one-way valve installed on the water inlet pipe 27 only allows water to enter the cavity 13 through the water inlet pipe 27, and the one-way valve installed on the back spray pipe 28 only allows water in the cavity 13 to enter the back spray pipe 28.

[0051] When piston 12 slides upward inside cavity 13, water can be drawn into cavity 13 through water inlet pipe 27. Then, when piston 12 slides downward inside cavity 13, water inside cavity 13 can be sent into back spray pipe 28. Finally, water is discharged through water hole at the bottom of back spray pipe 28. The discharged water can impact the filter screen 7 from above, achieving back spraying of filter screen 7. This, combined with the deformation of filter screen 7, generates a small shearing force between the hole wall and impurities, loosening the impurities embedded in the holes, further improving the cleaning effect of filter screen 7 and ensuring normal water flow.

[0052] When the gas inside the exhaust valve body 1 is discharged, the liquid level will rise. Under the action of buoyancy, the float 3 drives the drive shaft 4 to slide upward. At this time, the piston 12 slides upward inside the cavity 13, and water is drawn into the cavity 13 through the water inlet pipe 27. When the gas pressure inside the exhaust valve body 1 is high, it will push the liquid level, causing the float 3 to descend inside the exhaust valve body 1, and at the same time, it will drive the drive shaft 4 to slide downward inside the drive rod 5. At this time, the piston 12 slides downward inside the cavity 13, which can send the water inside the cavity 13 into the back spray pipe 28. Finally, it is discharged through the water hole opened at the bottom of the back spray pipe 28. The discharged water can impact the filter screen 7 from above, realizing the back spray of the filter screen 7.

[0053] In a preferred embodiment of the present invention, a rotating ring 14 is fixedly installed at the top end of the reverse nozzle 28, and an arc-shaped push block 15 for pushing the top pressure rod 16 toward the transmission rod 5 is fixedly installed at the top end of the rotating ring 14. Multiple arc-shaped push blocks 15 are provided.

[0054] One end of the reverse nozzle 28 extends into the interior of the transmission rod 5, and the reverse nozzle 28 is fixedly connected to the rotating ring 14. Therefore, when the float 3 moves, the transmission shaft 4, under the action of the guide rod 11 and the spiral groove 10, will drive the transmission rod 5 to rotate synchronously, causing the reverse nozzle 28 to drive the rotating ring 14 to rotate below the positioning ring 8. The arc-shaped push block 15 set at the top of the rotating ring 14, through its own arc shape (both ends of the arc-shaped push block 15 are provided with arc surfaces, so that the top pressure rod 16 can be pushed whether the rotating ring 14 rotates clockwise or counterclockwise), can push the top pressure rod 16. The rotation pushes the top pressure rod 16, causing it to slide towards the center of the filter screen 7. The pull rope 17 deforms the filter screen 7. When the mesh shape changes, shearing force is generated between the hole wall and the impurities, which can break the adhesion between the impurities and the filter screen 7, loosening the impurities embedded in the holes. In conjunction with the back spray pipe 28, the water inside the cavity 13 is knocked off from above the filter screen 7 by the impact, thereby restoring the permeability of the mesh. By blocking impurities in the water, the impurities attached to the float 3 are reduced, ensuring the stability of the rise and fall of the float 3, and thus improving the system efficiency.

[0055] In a preferred embodiment of the present invention, a discharge bend 6 is fixedly installed on the exhaust valve body 1, and a transmission rod 5 is rotatably installed at the top of the discharge bend 6. The transmission rod 5 has a discharge chamber 32 that communicates with the inner cavity of the discharge cylinder 20. A second auger 18 is provided inside the discharge bend 6. A first bevel gear 29 is fixedly installed on the output shaft of the first auger 21, and a second bevel gear 30 that meshes with the first bevel gear 29 is fixedly installed on the output shaft of the second auger 18.

[0056] When the placement box 19 scrapes away the impurities from the bottom surface of the filter screen 7 and the impurities fall into the inside of the impurity delivery cylinder 20, the first auger 21 rotates, which can transport the impurities into the discharge chamber 32. At this time, the impurities entering the discharge chamber 32 will continue to fall into the discharge bend 6 under the action of gravity. The rotation of the first auger 21 drives the first bevel gear 29 to rotate, which controls the second bevel gear 30 to drive the second auger 18 to rotate, which will transport the impurities falling into the discharge bend 6. When the impurities fall into the bending area of ​​the discharge bend 6, they can stay at the current position. As the amount of impurities increases, the impurities can be squeezed out from the inside of the discharge bend 6. By removing the impurities inside the exhaust valve body 1, the impurities attached to the float 3 are reduced, ensuring the stability of the rise and fall of the float 3, thereby improving the exhaust efficiency.

[0057] In a preferred embodiment of the present invention, a transmission block 31 is fixedly installed on one side of the feed cylinder 20. The transmission block 31 is connected to the housing box 19 by a torsion spring. A sector gear 23 is fixedly installed on the transmission block 31. A first toothed ring 22 that meshes with the sector gear 23 is fixedly installed at the bottom end of the fixing ring 9.

[0058] When the transmission rod 5 drives the housing box 19 to rotate counterclockwise at the bottom of the filter screen 7, the sector gear 23 will rotate at the bottom of the fixed ring 9. Under the action of the first toothed ring 22, the sector gear 23 drives the transmission block 31 and the waste delivery cylinder 20 to rotate counterclockwise inside the housing box 19. At this time, the opening on the waste delivery cylinder 20 will face the bottom of the filter screen 7. At the same time, the torsion spring will also deform and store elastic potential energy. Since it is a sector gear 23, no matter how many times the housing box 19 drives the waste delivery cylinder 20 to rotate, as long as it rotates counterclockwise, the opening of the waste delivery cylinder 20 can face the bottom of the filter screen 7.

[0059] When the placement box 19 drives the conveying cylinder 20 to rotate clockwise, the torsion spring resets and releases elastic potential energy, and the sector gear 23, in conjunction with the first gear ring 22, can rotate the opening of the conveying cylinder 20 to the inside of the placement box 19. At this time, impurities cannot enter the inside of the conveying cylinder 20, making it easier for the first auger 21 to transport the impurities to the inside of the discharge chamber 32.

[0060] In a preferred embodiment of the present invention, a sliding groove 26 is provided on the inner wall of the exhaust valve body 1. A rotating gear 24 is provided inside the sliding groove 26. A second toothed ring 25 that meshes with the rotating gear 24 is fixedly installed inside the sliding groove 26. A ratchet 33 is rotatably installed inside the rotating gear 24. A ratchet bar 34 for blocking the ratchet 33 is elastically installed inside the rotating gear 24. The output shaft of the first auger 21, away from the first bevel gear 29, extends through the transmission block 31 into the interior of the sliding groove 26 and is fixedly connected to the ratchet 33.

[0061] The ratchet 34 prevents the ratchet 33 from rotating counterclockwise. Therefore, when the housing 19 is rotated counterclockwise by the transmission rod 5, the sector gear 23 drives the transmission block 31 and the waste delivery cylinder 20 to rotate counterclockwise inside the housing 19. At this time, the opening on the waste delivery cylinder 20 faces downwards towards the filter screen 7. The rotating gear 24, in cooperation with the second gear ring 25, drives the ratchet 34 to rotate clockwise around the ratchet 33. The ratchet 34 is not affected by the ratchet 33. When the housing 19 rotates clockwise, the torsion spring releases its elastic potential energy. The sector gear 23, in cooperation with the first gear ring 22, can rotate the opening of the waste delivery cylinder 20 into the housing 19. Impurities must not enter the interior of the waste feeding cylinder 20. Simultaneously, with the cooperation of the rotating gear 24 and the second gear ring 25, the rotating gear 24 drives the ratchet 34 to rotate counterclockwise outside the ratchet 33. At this time, the ratchet 34 blocks the ratchet 33, and together they drive the ratchet 33 to rotate clockwise. This can drive the first auger 21 to transport the impurities that have just entered the waste feeding cylinder 20 to the interior of the discharge chamber 32. Finally, through the cooperation of the first bevel gear 29 and the second bevel gear 30, the second auger 18 is controlled to discharge the impurities to the outside of the exhaust valve body 1. By blocking and discharging impurities in the water, the impurities attached to the float 3 are effectively reduced, ensuring the stable rise and fall of the float 3, and improving the exhaust efficiency.

[0062] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0063] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust valve with an impurity separator, comprising an exhaust valve body (1), wherein the interior of the exhaust valve body (1) is provided with a receiving portion (2) for accommodating a float (3); Its features are: A fixing ring (9) is fixedly installed inside the exhaust valve body (1). An extendable filter screen (7) is provided inside the fixing ring (9). A positioning ring (8) is fixedly installed on the fixing ring (9). The positioning ring (8) is positioned above the filter screen (7). The positioning ring (8) is provided with a tensioning assembly, which includes a top pressure rod (16) and a pull rope (17). The top pressure rod (16) is elastically installed inside the positioning ring (8), and the pull rope (17) is provided on the inner wall of the fixing ring (9). One end of the pull rope (17) is connected to the top pressure rod (16), and the other end is connected to the filter screen (7). Multiple tensioning assemblies are provided. A transmission rod (5) is rotatably installed inside the fixed ring (9). A mounting box (19) is fixedly installed on the outer wall of the transmission rod (5). The top of the mounting box (19) is attached to the bottom of the filter screen (7). A feed cylinder (20) is rotatably installed inside the mounting box (19). A first auger (21) is rotatably installed inside the feed cylinder (20). Both the feed cylinder (20) and the mounting box (19) have openings.

2. The exhaust valve with impurity separator according to claim 1, characterized in that: A drive shaft (4) is slidably installed inside the drive rod (5). One end of the drive shaft (4) is fixedly connected to the float (3). A tension spring is provided between the float (3) and the accommodating part (2). The inner wall of the transmission rod (5) is provided with a spiral groove (10), and the outer wall of the transmission shaft (4) is fixedly installed with a guide rod (11), one end of which extends into the interior of the spiral groove (10).

3. The exhaust valve with impurity separator according to claim 2, characterized in that: The transmission rod (5) has a cavity (13) inside. One end of the transmission shaft (4) extends into the cavity (13) and is fixedly installed with a piston (12). The transmission shaft (4) is provided with a back spray pipe (28) and a water inlet pipe (27). One end of the back spray pipe (28) extends into the cavity (13), and the other end extends above the filter screen (7). A water hole is provided at the end of the back spray pipe (28) facing the filter screen (7). One end of the water inlet pipe (27) extends into the cavity (13), and the other end extends through the transmission rod (5) to the bottom of the filter screen (7); Both the water inlet pipe (27) and the back spray pipe (28) are equipped with one-way valves.

4. The exhaust valve with impurity separator according to claim 3, characterized in that: A rotating ring (14) is fixedly installed at the top end of the reverse nozzle (28), and an arc-shaped push block (15) is fixedly installed at the top end of the rotating ring (14) for pushing the top pressure rod (16) toward the transmission rod (5). Multiple arc-shaped push blocks (15) are provided.

5. An exhaust valve with an impurity separator according to claim 4, characterized in that: The exhaust valve body (1) is fixedly installed with a discharge bend (6), the transmission rod (5) is rotatably installed at the top of the discharge bend (6), the transmission rod (5) has a discharge chamber (32) that communicates with the inner cavity of the discharge cylinder (20), the discharge bend (6) is provided with a second auger (18), the output shaft of the first auger (21) is fixedly installed with a first bevel gear (29), and the output shaft of the second auger (18) is fixedly installed with a second bevel gear (30) that meshes with the first bevel gear (29).

6. An exhaust valve with an impurity separator according to claim 5, characterized in that: A transmission block (31) is fixedly installed on one side of the feeding cylinder (20). The transmission block (31) is connected to the placement box (19) by a torsion spring. A sector gear (23) is fixedly installed on the transmission block (31). A first toothed ring (22) that meshes with the sector gear (23) is fixedly installed at the bottom end of the fixing ring (9).

7. An exhaust valve with an impurity separator according to claim 6, characterized in that: The inner wall of the exhaust valve body (1) is provided with a sliding groove (26). A rotating gear (24) is provided inside the sliding groove (26). A second toothed ring (25) that meshes with the rotating gear (24) is fixedly installed inside the sliding groove (26). A ratchet (33) is rotatably installed inside the rotating gear (24). A ratchet bar (34) for blocking the ratchet (33) is elastically installed inside the rotating gear (24). The output shaft of the first auger (21) away from the first bevel gear (29) extends through the transmission block (31) into the sliding groove (26) and is fixedly connected to the ratchet (33).

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