Automatic exhaust water-blocking adjustable exhaust valve

Abstract

The automatic exhaust water-blocking adjustable exhaust valve comprises a water pipe, a connecting base is arranged on the outer wall of the water pipe and connected with the water pipe through a holding assembly, a first communicating pipe is arranged on the outer wall of the water pipe, a first inserting groove matched with the first communicating pipe is formed in the bottom end of the connecting base, and a second inserting groove matched with the second communicating pipe is formed in the bottom end of the connecting base. A valve body is arranged at the top end of the connecting base. The device has the beneficial effects that the connecting base and the water pipe are conveniently connected and fixed through the holding assembly, the valve body and the connecting base can be rapidly installed through the connecting assembly, meanwhile, the connecting assembly is limited through cooperation of a reset spring and a limiting sliding rod, use is easy, operation is convenient and fast, and threaded connection of the valve body and the water pipe is not needed; and by arranging the feeding assembly, the liquid level of liquid entering the valve body can be monitored to obtain the actual pressure, so that the weight of the floating cylinder is adjusted, the floating cylinder can adapt to different water pressures, opening and closing of the exhaust hole can be better controlled, the floating cylinder does not need to be replaced, and the application range of the floating cylinder is widened.

Description

Technical Field

[0001] The present invention relates to the technical field of exhaust valves, and in particular to an automatic exhaust and water-blocking adjustable exhaust valve. Background Art

[0002] The air evacuation valve is used for exhaust in pipes of independent heating systems, central heating systems, heating boilers, central air conditioners, floor heating and solar heating systems. Because there is usually a certain amount of air dissolved in water, and the solubility of air decreases with the increase of temperature, the gas gradually separates from the water during the circulation of water, and gradually gathers together to form large bubbles or even air columns. Because of the supplement of water, gas is often generated. The exhaust valve is divided into heating type, trace type, fast type, compound type, etc.

[0003] Most of the existing exhaust valves are connected to the pipeline threads. After being used for a long time, the threaded connection is prone to rust and affects its sealing performance. It is also difficult to remove it from the pipeline. At the same time, the existing exhaust valve mainly adjusts the opening and closing of the exhaust hole by floating the float. However, the different pressures in the water pipe will affect the floating height of the float, so the opening and closing of the exhaust hole cannot be well adjusted.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] In view of the problems in the related technology, the present invention proposes an automatic exhaust and water-blocking adjustable exhaust valve to overcome the above-mentioned technical problems existing in the existing related technology.

[0006] To this end, the specific technical solution adopted by the present invention is as follows: 1. The vent valve as claimed in claim 1, wherein the valve body has a first groove and a second groove is provided on the top of the valve body, and the second groove is provided on the top of the valve body to match the second groove. The vent valve of the valve body is connected to the vent valve by a connecting assembly ...

[0007] Preferably, a sealing gasket 1 is provided at the top of the connecting tube 1, a sealing groove 2 matching the sealing gasket 1 is provided on the connecting seat, a sealing gasket 2 is provided at the bottom end of the connecting tube 2, and a sealing groove 3 matching the sealing gasket 2 is provided on the connecting seat.

[0008] Preferably, the clamping assembly includes an arc-shaped clamping plate matching the water pipe at the bottom end of the connecting seat, the arc-shaped clamping plate is connected to the connecting seat via a rotating shaft, and the bottom end of the connecting seat is an arc-shaped concave surface matching the water pipe.

[0009] The lockhole that is formed on the two ends of the support frame is formed on the upper and lower surfaces of the support frame, and the lockhole that is formed on the two ends of the support frame is formed on the upper and lower surfaces of the support frame.

[0010] Preferably, the limiting slide rod is connected to the mounting tube via the return spring 1, a guide groove 1 is provided on the inner wall of the mounting tube, and a guide block 2 matching the guide groove 1 is provided on the limiting slide rod.

[0011] Preferably, the fixed pressure rod is connected to the pressing sleeve via the second return spring, a second guide groove is provided on the inner wall of the pressing sleeve, and a third guide block matching the second guide groove is provided on the fixed pressure rod.

[0012] Preferably, the outer wall of the filter cartridge is provided with a scraper ring, and the scraper ring is connected to the feeding pipe via a connecting frame.

[0013] Preferably, the feeding assembly includes a U-shaped fixing frame provided at the top of the valve body, a winding box is provided in the U-shaped fixing frame, a winding roller is provided in the winding box, a lifting rope is provided on the outer wall of the winding roller, the bottom end of the lifting rope passes through the feeding pipe and extends into the float, a plurality of equidistantly distributed counterweights are provided in the float and on the lifting rope, an axial end on one side of the winding roller extends to the outside of the winding box and is connected to the driving end of the servo motor, a liquid level pressure sensor connected to the valve body is provided on one side of the valve body, and a PLC controller is provided on one side of the valve body.

[0014] Preferably, the bottom end of the winding box is provided with symmetrically arranged guide wheels.

[0015] Preferably, the servo motor and the liquid level pressure sensor are both electrically connected to the PLC controller.

[0016] The beneficial effects of the present invention are as follows: by arranging the clamping component, it is convenient to connect and fix the connecting seat with the water pipe; by arranging the connecting component, the valve body can be quickly installed on the connecting seat; at the same time, the connecting component is limited by the cooperation of the reset spring and the limiting slide rod; it is simple to use and convenient to operate; there is no need to thread the valve body and the water pipe, thereby improving the disassembly and assembly efficiency; by arranging the feeding component, the liquid level entering the valve body can be monitored to obtain the actual pressure, thereby adjusting the weight of the float so that it can adapt to different water pressures and can better control the opening and closing of the exhaust hole without replacing the float, thereby improving its scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 2 is a schematic diagram of the overall structure of an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Figure 2 It is a front view of an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a water pipe of an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a connecting seat in an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Figure 5 It is a cross-sectional view of a connecting seat in an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Figure 6 yes Figure 5 A local enlarged schematic diagram of the middle A; Figure 7 It is a front view of a valve body in an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Figure 8 It is a cross-sectional view of a valve body in an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention; Fig. 9 yes Figure 8 A partial enlarged schematic diagram of point B in the middle; Fig.10 It is a cross-sectional view of a connecting block in an automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention.

[0019] In the figure: 1. Water pipe; 2. Connecting seat; 3. Connecting pipe 1; 4. Slot 1; 5. Valve body; 6. Connecting pipe 2; 7. Slot 2; 8. Exhaust hole; 9. Float; 10. Guide block 1; 11. Guide rod; 12. Feeding pipe; 13. Sealing piece; 14. Sealing groove 1; 15. Sealing pad 1; 16. Sealing groove 2; 17. Sealing pad 2; 18. Sealing groove 3; 19. Arc clamp; 20. Connecting block; 21. Connecting groove; 22. Fixing plate; 23. Mounting tube; 24. Limiting slide bar; 25. Reset spring 1 ; 26. Limiting groove; 27. Fixed pressure rod; 28. Pressing sleeve; 29. ​​Reset spring 2; 30. U-shaped pressure frame; 31. Slide groove; 32. Pressing column; 33. Guide groove 1; 34. Guide block 2; 35. Guide groove 2; 36. Guide block 3; 37. Scraper ring; 38. Connecting frame; 39. U-shaped fixed frame; 40. Winding box; 41. Winding roller; 42. Lifting rope; 43. Counterweight; 44. Servo motor; 45. Liquid level pressure sensor; 46. PLC controller; 47. Guide wheel; 48. Filter cartridge. DETAILED DESCRIPTION

[0020] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0021] According to an embodiment of the present invention, an automatic exhaust and water-blocking adjustable exhaust valve is provided. Example

[0022] like Figure 1-10As shown, the automatic exhaust and water-blocking adjustable exhaust valve according to an embodiment of the present invention includes a water pipe 1, the outer wall of the water pipe 1 is provided with a connecting seat 2, the connecting seat 2 is connected to the water pipe 1 through a clamping component, the outer wall of the water pipe 1 is provided with a connecting pipe 3, the bottom end of the connecting seat 2 is provided with a slot 4 matching the connecting pipe 3, the top of the connecting seat 2 is provided with a valve body 5, the bottom end of the valve body 5 is provided with a connecting pipe 6, the top of the connecting seat 2 is provided with a slot 7 matching the connecting pipe 6, the connecting pipe 6 is connected to the connecting seat 2 through a connecting component, the top of the valve body 5 is provided with an exhaust hole 8, A filter cartridge 48 is provided at the top of the valve body 5 and located on the exhaust hole 8, a float 9 is provided in the valve body 5, symmetrically arranged guide blocks 10 are provided on both sides of the float 9, the valve body 5 is provided with guide rods 11 which are symmetrically arranged and respectively penetrate two groups of the guide blocks 10, a feeding pipe 12 penetrating the exhaust hole 8 and the filter cartridge 48 is provided at the top of the float 9, a feeding assembly matching the feeding pipe 12 is provided at the top of the valve body 5, a sealing sheet 13 is fixedly sleeved in the valve body 5 and located on the outer wall of the feeding pipe 12, and a sealing groove 14 matching the sealing sheet 13 is provided at the top of the inner top of the valve body 5. Example

[0023] like Figure 1-10As shown, it includes a water pipe 1, the outer wall of the water pipe 1 is provided with a connecting seat 2, the connecting seat 2 is connected to the water pipe 1 through a clamping component, the outer wall of the water pipe 1 is provided with a connecting pipe 3, the bottom end of the connecting seat 2 is provided with a slot 4 matching the connecting pipe 3, the top of the connecting seat 2 is provided with a valve body 5, the bottom end of the valve body 5 is provided with a connecting pipe 6, the top of the connecting seat 2 is provided with a slot 7 matching the connecting pipe 6, the connecting pipe 6 is connected to the connecting seat 2 through a connecting component, the top of the valve body 5 is provided with an exhaust hole 8, the top of the valve body 5 and located at the A filter cartridge 48 is provided on the exhaust hole 8, a float 9 is provided in the valve body 5, and symmetrically arranged guide blocks 10 are provided on both sides of the float 9, and a guide rod 11 is provided in the valve body 5, which is symmetrically arranged and passes through two groups of guide blocks 10 respectively, and a feeding pipe 12 is provided at the top of the float 9, which passes through the exhaust hole 8 and the filter cartridge 48, and a feeding assembly matching the feeding pipe 12 is provided at the top of the valve body 5, and a sealing sheet 13 is fixedly sleeved in the valve body 5 and located on the outer wall of the feeding pipe 12, and a sealing groove 14 matching the sealing sheet 13 is provided in the top of the valve body 5. A sealing gasket 15 is provided at the top of the connecting pipe 3, and a sealing groove 2 16 matching the sealing gasket 15 is provided on the connecting seat 2, and a sealing gasket 2 17 is provided at the bottom of the connecting pipe 2 6, and a sealing groove 3 18 matching the sealing gasket 2 17 is provided on the connecting seat 2. The clamping assembly includes an arc-shaped clamping plate 19 matching the water pipe 1, which is provided at the bottom of the connecting seat 2. The arc-shaped clamping plate 19 is connected to the connecting seat 2 via a rotating shaft. The bottom of the connecting seat 2 is an arc-shaped concave surface matching the water pipe 1. The connecting assembly includes a symmetrically arranged connecting block 20 provided on the outer wall of the connecting pipe 2 6. The connecting seat 2 is provided with a connecting groove 21 matching the connecting block 20. The connecting block 20 is provided with a symmetrically arranged fixing plate 22. The two groups of fixing plates 22 are provided with a mounting tube 23 on the side away from each other. A limiting slide bar 24 is provided in the mounting tube 23. A return spring 25 is provided in the mounting tube 23 and on one side of the limiting slide bar 24. The limiting slide bar 24 extends to the outside of the connecting block 20 from the side away from the return spring 25. The connecting seat 2 is provided with a limiting groove 26 matching the limiting slide bar 24, a fixed pressure rod 27 is provided in the connecting block 20 and located between the two groups of the fixing plates 22, the outer wall of the fixed pressure rod 27 is provided with a pressing sleeve 28, a return spring 29 is provided in the pressing sleeve 28 and located at the top of the fixed pressure rod 27, a U-shaped pressing frame 30 is provided at the top of the pressing sleeve 28, a sliding groove 31 matching the U-shaped pressing frame 30 is provided on the outer wall of the limiting slide bar 24, and a pressing column 32 extending to the outside of the connecting block 20 is provided at the top of the U-shaped pressing frame 30.The limiting slide bar 24 is connected to the installation tube 23 through the reset spring 1 25, the inner wall of the installation tube 23 is provided with a guide groove 1 33, and the limiting slide bar 24 is provided with a guide block 2 34 matching the guide groove 1 33. The fixed pressure rod 27 is connected to the pressing sleeve 28 through the reset spring 29, the inner wall of the pressing sleeve 28 is provided with a guide groove 2 35, and the fixed pressure rod 27 is provided with a guide block 3 36 matching the guide groove 2 35.

[0024] When installing the valve body 5, first fix the connecting seat 2 and the water pipe 1, insert the connecting pipe 3 on the water pipe 1 into the slot 4 at the bottom of the connecting seat 2, and then clamp the water pipe 1 through the arc clamping plate 19 to tighten the bolts, wherein the sealing gasket 15 and the sealing groove 2 16 cooperate to improve the sealing performance between the connecting seat 2 and the connecting pipe 3, and then fix the valve body 5 and the connecting seat 2, press the pressing column 32 to drive the U-shaped pressing frame 30 to move downward, and the U-shaped pressing frame 30 squeezes the sliding groove 31 on the limiting slide bar 24. At the same time, the U-shaped pressing frame 30 squeezes the reset spring 29 through the pressing sleeve 28, and the reset spring 29 is in a compressed state. The limiting slide bar 24 is squeezed by the U-shaped pressing frame 30 and begins to move toward the inside of the connecting block 20. At this time, the reset spring 1 25 is in a compressed state. When the limiting slide bar 24 enters the inside of the connecting block 20, the connecting pipe 26 is inserted Into the slot 27 on the connecting seat 2, at this time, the connecting block 20 enters the connecting groove 21 on the connecting seat 2, and the personnel releases the pressing column 32. At this time, the reset spring 29 resets and drives the U-shaped pressure frame 30 to move upward and disengage from the limiting slide bar 24, and then the reset spring 1 25 resets and drives the limiting slide bar 24 to move to the outside of the connecting block 20 until the connecting block 20 is inserted into the limiting groove 26 on the connecting seat 2 to limit it, wherein the sealing gasket 2 17 and the sealing groove 3 18 cooperate to improve the sealing performance between the connecting seat 2 and the connecting pipe 2 6, and the connection seat and the water pipe are connected and fixed by setting a clamping component. The valve body can be quickly installed on the connecting seat by setting a connecting component. At the same time, the connecting component is limited by the reset spring and the limiting slide bar. It is simple to use and convenient to operate. There is no need to connect the valve body to the water pipe threaded connection, which improves its disassembly and assembly efficiency. Example

[0025] like Figure 1-10As shown, it includes a water pipe 1, the outer wall of the water pipe 1 is provided with a connecting seat 2, the connecting seat 2 is connected to the water pipe 1 through a clamping component, the outer wall of the water pipe 1 is provided with a connecting pipe 3, the bottom end of the connecting seat 2 is provided with a slot 4 matching the connecting pipe 3, the top of the connecting seat 2 is provided with a valve body 5, the bottom end of the valve body 5 is provided with a connecting pipe 6, the top of the connecting seat 2 is provided with a slot 7 matching the connecting pipe 6, the connecting pipe 6 is connected to the connecting seat 2 through a connecting component, the top of the valve body 5 is provided with an exhaust hole 8, the top of the valve body 5 and located at the A filter cartridge 48 is provided on the exhaust hole 8, a float 9 is provided in the valve body 5, and symmetrically arranged guide blocks 10 are provided on both sides of the float 9, and a guide rod 11 is provided in the valve body 5, which is symmetrically arranged and passes through two groups of guide blocks 10 respectively, and a feeding pipe 12 is provided at the top of the float 9, which passes through the exhaust hole 8 and the filter cartridge 48, and a feeding assembly matching the feeding pipe 12 is provided at the top of the valve body 5, and a sealing sheet 13 is fixedly sleeved in the valve body 5 and located on the outer wall of the feeding pipe 12, and a sealing groove 14 matching the sealing sheet 13 is opened at the inner top of the valve body 5. A scraper ring 37 is sleeved on the outer wall of the filter cartridge 48, and the scraper ring 37 is connected to the feeding pipe 12 through a connecting frame 38. The feeding assembly includes a U-shaped fixing frame 39 provided at the top of the valve body 5, a winding box 40 is provided in the U-shaped fixing frame 39, a winding roller 41 is provided in the winding box 40, a hanging rope 42 is provided on the outer wall of the winding roller 41, the bottom end of the hanging rope 42 passes through the feeding pipe 12 and extends into the buoy 9, a plurality of equally distributed counterweights 43 are provided in the buoy 9 and on the hanging rope 42, one side of the winding roller 41 extends to the outside of the winding box 40 and is connected to the driving end of the servo motor 44, one side of the valve body 5 is provided with a liquid level pressure sensor 45 connected thereto, and one side of the valve body 5 is provided with a PLC controller 46. A symmetrically arranged guide wheel 47 is provided at the bottom of the winding box 40. The servo motor 44 and the liquid level pressure sensor 45 are both electrically connected to the PLC controller 46.

[0026] When water flows through the water pipe 1, water enters the valve body 5 and drives the float 9 to move upward. The float 9 drives the sealing sheet 13 to move upward through the feeding pipe 12 until it enters the sealing groove 14 to block the exhaust hole 8. When there is gas in the water and bubbles are generated, the water level in the valve body 5 drops and drives the float 9 to move downward. The float 9 drives the sealing sheet 13 to separate from the sealing groove 14. At this time, the exhaust hole 8 is opened and the gas is discharged through the exhaust hole 8. The filter cartridge 48 can protect the exhaust hole 8 to prevent dust from entering the valve body 5. During the up and down movement of the float 9, the scraper ring 37 can be driven up and down by the feeding pipe 12 to scrape the outer wall of the filter cartridge 48. Scrape to prevent the filter holes from being blocked. When the water in the water pipe 1 enters the valve body 5, the liquid level pressure sensor 45 monitors the water level and sends the information to the PLC controller 46. The PLC controller 46 starts the servo motor 44 to drive the winding roller 41 to rotate. The winding roller 41 starts to reel in or unreel the suspension rope 42. The suspension rope 42 drives the counterweight block 43 to fall or rise, thereby changing the gravity of the float 9. By setting the feeding component, the liquid level entering the valve body can be monitored to obtain the actual pressure, thereby adjusting the weight of the float so that it can adapt to different water pressures and better control the opening and closing of the exhaust hole without replacing the float, thereby improving its scope of application.

[0027] To sum up, with the help of the above technical scheme of the present invention, by setting the clamping component, it is convenient to connect and fix the connecting seat and the water pipe. By setting the connecting component, the valve body can be quickly installed on the connecting seat. At the same time, the connecting component is limited by the reset spring and the limiting slide rod. It is simple to use and convenient to operate. There is no need to connect the valve body to the water pipe thread, which improves its disassembly and assembly efficiency. By setting the feeding component, the liquid level entering the valve body can be monitored to obtain the actual pressure, thereby adjusting the weight of the float so that it can adapt to different water pressures and can better control the opening and closing of the exhaust hole. There is no need to replace the float, which improves its scope of application.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic exhaust and water-blocking adjustable exhaust valve, characterized in that: The invention comprises a water pipe (1), wherein the outer wall of the water pipe (1) is provided with a connection seat (2), the connection seat (2) is connected to the water pipe (1) through a clamping assembly, the outer wall of the water pipe (1) is provided with a connecting pipe (3), the bottom end of the connecting seat (2) is provided with a slot (4) matching the connecting pipe (3), the top end of the connecting seat (2) is provided with a valve body (5), the bottom end of the valve body (5) is provided with a connecting pipe (6), the top end of the connecting seat (2) is provided with a slot (7) matching the connecting pipe (6), the connecting pipe (6) is connected to the connecting seat (2) through a connecting assembly, the top end of the valve body (5) is provided with an exhaust hole (8), the top end of the valve body (5) and located at the A filter cartridge (48) is provided on the exhaust hole (8), a float (9) is provided in the valve body (5), symmetrically arranged guide blocks (10) are provided on both sides of the float (9), the valve body (5) is provided with symmetrically arranged guide rods (11) that respectively penetrate two groups of the guide blocks (10), a feeding pipe (12) penetrating the exhaust hole (8) and the filter cartridge (48) is provided at the top of the float (9), a feeding assembly matching the feeding pipe (12) is provided at the top of the valve body (5), a sealing sheet (13) is fixedly sleeved in the valve body (5) and located on the outer wall of the feeding pipe (12), and a sealing groove (14) matching the sealing sheet (13) is provided at the top of the inner side of the valve body (5).

2. The automatic exhaust and water-blocking adjustable exhaust valve according to claim 1 is characterized in that: The top end of the connecting pipe 1 (3) is provided with a sealing gasket 1 (15), and the connecting seat (2) is provided with a sealing groove 2 (16) matching the sealing gasket 1 (15). The bottom end of the connecting pipe 2 (6) is provided with a sealing gasket 2 (17), and the connecting seat (2) is provided with a sealing groove 3 (18) matching the sealing gasket 2 (17).

3. A wetland fertilization device for soil restoration according to claim 1, characterized in that: The clamping assembly comprises a curved clamping plate (19) which is provided at the bottom end of the connecting seat (2) and matches the water pipe (1); the curved clamping plate (19) is connected to the connecting seat (2) via a rotating shaft; and the bottom end of the connecting seat (2) is a curved concave surface which matches the water pipe (1).

4. A wetland fertilization device for soil restoration according to claim 1, characterized in that: The connecting assembly comprises a symmetrically arranged connecting block (20) provided on the outer wall of the second connecting pipe (6); a connecting groove (21) matching the connecting block (20) is provided on the connecting seat (2); a symmetrically arranged fixing plate (22) is provided in the connecting block (20); a mounting tube (23) is provided on the side away from each other of the two sets of fixing plates (22); a limiting slide bar (24) is provided in the mounting tube (23); a return spring (25) is provided in the mounting tube (23) and located on one side of the limiting slide bar (24); the side of the limiting slide bar (24) away from the return spring (25) extends to the outside of the connecting block (20); The connection seat (2) is provided with a limit groove (26) matching the limit slide bar (24); a fixed pressure rod (27) is provided in the connection block (20) and located between the two groups of fixed plates (22); a pressure sleeve (28) is sleeved on the outer wall of the fixed pressure rod (27); a second return spring (29) is provided in the pressure sleeve (28) and located at the top of the fixed pressure rod (27); a U-shaped pressure frame (30) is provided at the top of the pressure sleeve (28); a sliding groove (31) matching the U-shaped pressure frame (30) is provided on the outer wall of the limit slide bar (24); and a pressing column (32) extending to the outside of the connection block (20) is provided at the top of the U-shaped pressure frame (30).

5. A wetland fertilization device for soil restoration according to claim 4, characterized in that: The limiting slide bar (24) is connected to the mounting tube (23) via the return spring 1 (25); a guide groove 1 (33) is provided on the inner wall of the mounting tube (23); and a guide block 2 (34) matching the guide groove 1 (33) is provided on the limiting slide bar (24).

6. A wetland fertilization device for soil restoration according to claim 4, characterized in that: The fixed pressure rod (27) is connected to the pressing sleeve (28) via the second return spring (29); the inner wall of the pressing sleeve (28) is provided with a second guide groove (35); and the fixed pressure rod (27) is provided with a third guide block (36) matching the second guide groove (35).

7. A wetland fertilization device for soil restoration according to claim 1, characterized in that: The outer wall of the filter cartridge (48) is sleeved with a scraper ring (37), and the scraper ring (37) is connected to the feeding pipe (12) via a connecting frame (38).

8. A wetland fertilization device for soil restoration according to claim 1, characterized in that: The feeding assembly comprises a U-shaped fixing frame (39) provided at the top of the valve body (5), a winding box (40) being provided in the U-shaped fixing frame (39), a winding roller (41) being provided in the winding box (40), a suspension rope (42) being provided on the outer wall of the winding roller (41), the bottom end of the suspension rope (42) passing through the feeding pipe (12) and extending into the buoy (9), a plurality of equidistantly distributed counterweights (43) being provided in the buoy (9) and on the suspension rope (42), a shaft end on one side of the winding roller (41) extending to the outside of the winding box (40) and connected to the driving end of a servo motor (44), a liquid level pressure sensor (45) being provided on one side of the valve body (5) and being in communication therewith, and a PLC controller (46) being provided on one side of the valve body (5).

9. A wetland fertilization device for soil restoration according to claim 8, characterized in that: A symmetrically arranged guide wheel (47) is provided at the bottom end of the winding box (40).

10. A wetland fertilization device for soil restoration according to claim 8, characterized in that: The servo motor (44) and the liquid level pressure sensor (45) are both electrically connected to the PLC controller (46).

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