Anti-clogging hydraulic reversing valve

Abstract

The present invention discloses an anti-clogging hydraulic reversing valve, which relates to the field of hydraulic reversing valves, including a valve body and a first upper port and a second upper port opened at the upper end of the valve body, and a first lower port, a second lower port and a third lower port opened at the bottom of the valve body, and a hydraulic telescopic rod is fixedly installed on the left side of the valve body, and a movable adjustment rod is fixedly installed at the output end of the hydraulic telescopic rod, and the movable adjustment rod is embedded in the interior of the valve body. In the anti-clogging hydraulic reversing valve, the rotating rod improves the rotation effect under the action of the rotating shaft, thereby knocking the valve body through the knocking block, and the blown gas is finally discharged through the air outlet at the upper end. When the hydraulic telescopic rod is reset, the extrusion plate stops squeezing the elastic airbag, and the elastic airbag inhales air through the one-way valve inside the one-way air inlet and expands again. With the blowing, the knocking block can knock the valve body inside the knocking bin to avoid blockage inside the valve body, thereby achieving an anti-clogging effect.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic reversing valves, in particular to an anti-clogging hydraulic reversing valve. Background Art

[0002] A hydraulic reversing valve is a device used to control the direction of fluid flow in a hydraulic system. Its main function is to control a hydraulic cylinder or hydraulic motor by changing the flow path of the fluid, thereby achieving different mechanical movements or operations. The hydraulic reversing valve plays a vital role in hydraulic systems and is widely used in automation equipment in engineering, manufacturing, agriculture and other fields.

[0003] In the prior art, the opening position and the oil adding position can be sealed by the sealing section to avoid oil leakage and ensure the stability of the device. At the same time, a pressure relief is set at the oil inlet to avoid damage to the device caused by pressure shock and ensure the operation of the device.

[0004] In order to overcome the above-mentioned shortcomings, a Chinese patent of the prior art (publication number CN111828419A) discloses a hydraulic reversing valve, wherein a valve stem has a first piston section that can slide relative to a first valve hole section and enables the hydraulic reversing valve to form a cut-off position in which an oil inlet is not connected to a first working oil port and a conducting position in which an oil inlet is connected to the first working oil port, the first piston section has a first sealing section that cooperates with the first valve hole section at the cut-off position, the valve stem is provided with a first inner flow channel, and when the hydraulic reversing valve is in the cut-off position, the first inner flow channel has a first opening located in the first sealing section and a second opening that is connected to the oil return port;

[0005] In order to overcome the above-mentioned shortcomings, the Chinese patent of the prior art (publication number CN113494496A) discloses a hydraulic reversing valve, which has a cut-off position that keeps the oil inlet and the first working oil port disconnected and a conducting working position that keeps the oil inlet and the first working oil port connected. The valve stem can slide between the cut-off position and the conducting working position relative to the valve body. In the process of switching from the cut-off position to the conducting working position, the hydraulic reversing valve also has a transition section that keeps the oil inlet, the first oil return port and the first working oil port connected at the same time. The transition section design ensures that during the conduction process between the oil inlet and the first working oil port, the oil inlet is simultaneously connected to the first oil return port for pressure relief, thereby reducing the pressure shock during the reversal;

[0006] Although the existing technology can overcome the above-mentioned deficiencies, there are still other problems in its operation process. For example, if there are impurities in the liquid during oil supply, it is easy to cause the impurities to accumulate and clog the reversing valve. The clogged reversing valve is not easy to clean, which is not conducive to the transmission of the hydraulic reversing valve and may also cause reversing deviation. Summary of the invention

[0007] The purpose of the present invention is to provide an anti-clogging hydraulic reversing valve to solve the problem in the above background technology that if there are impurities in the liquid, the impurities are likely to accumulate and clog the reversing valve, and the clogged reversing valve is difficult to clean.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solutions: an anti-clogging hydraulic reversing valve, comprising a valve body and a first upper port and a second upper port opened at the upper end of the valve body, and a first lower port, a second lower port and a third lower port opened at the bottom of the valve body, and a hydraulic telescopic rod is fixedly installed on the left side of the valve body, and a movable adjustment rod is fixedly installed on the output end of the hydraulic telescopic rod;

[0009] The movable adjustment rod is embedded in the interior of the valve body, and a convenient reversing mechanism is arranged on the right side of the movable adjustment rod, and the convenient reversing mechanism is provided with a sealing block;

[0010] The upper end of the first upper port is fixedly provided with an installation channel, and a sealing connection mechanism is provided inside the installation channel, and the sealing connection mechanism is provided with a threaded section, and a fixed pipe is provided inside the installation channel;

[0011] The front and rear ends of the valve body are fixedly installed with knocking bins, and the inner wall of the knocking bin is provided with a knocking anti-blocking mechanism, and the knocking anti-blocking mechanism is provided with a rotating rod, and the inner wall of the rotating rod is rotatably installed inside the knocking bin.

[0012] Further, the lower end of the first upper port is communicated with the first lower port and the second lower port, and the second upper port is communicated with the second lower port and the third lower port.

[0013] Furthermore, the sealing block is fixedly installed on the right side of the movable adjustment rod, and the number of the sealing blocks is two, and the positions of the sealing blocks correspond to the first upper port and the second upper port.

[0014] Furthermore, the fixed pipe is threadedly installed inside the installation channel through the threaded section, and a return spring is fixedly installed on the inner wall of the installation channel, and a clamping plate is fixedly installed on the inner side of the return spring.

[0015] Furthermore, an anti-slip pad is fixedly mounted on the inner wall of the clamping plate, a damping rod is arranged between the clamping plate and the inner wall of the installation channel, and the position of the clamping plate corresponds to that of the fixed pipe.

[0016] Furthermore, an extrusion plate is fixedly installed at the middle end of the output end of the hydraulic telescopic rod, a push plate member is fixedly installed at the upper end of the extrusion plate, and limit blocks are fixedly installed at the front and rear ends of the push plate member.

[0017] Furthermore, an inflatable airbag is fixedly installed on the upper left end of the valve body, and the position of the inflatable airbag corresponds to the extrusion plate, and a limiting groove is provided at the front and rear of the valve body, and the connection between the limiting block and the limiting groove is a sliding connection, a first air guide tube is installed through the upper end of the inflatable airbag, and a sealing airbag is installed through the upper end of the first air guide tube, and the outer side of the sealing airbag is in contact with the inner wall of the installation channel, and the inner wall of the sealing airbag corresponds to the outer side of the fixed pipe, and the sealing airbags are connected to each other through a connecting tube.

[0018] Furthermore, the knocking bin is connected to the rotating rod via a rotating shaft, a knocking block is fixedly installed on the middle end of the rotating rod, an air collecting plate is fixedly installed on the lower end of the knocking block, and the upper end of the knocking block corresponds to the outer wall of the valve body.

[0019] Furthermore, a positioning bin is fixedly installed on the left side of the valve body, and an elastic airbag is arranged inside the positioning bin, and the position of the elastic airbag corresponds to that of the extrusion plate, and the elastic airbag is made of elastic material.

[0020] Furthermore, a second air duct is installed through the outer side of the elastic airbag, and a knocking bin is installed through the right side of the second air duct, and the right side of the second air duct is connected with the jet port, and the outer side of the jet port is fixedly installed on the inner wall of the knocking bin, the jet port is aligned with the wind collecting plate, and an air outlet is opened at the upper end of the knocking bin, a one-way air inlet is installed through the upper end of the elastic airbag, and a one-way valve is arranged inside the one-way air inlet, and the surface of the second air duct is fixedly installed on the outer wall of the valve body through a fixing part.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By moving the adjusting rod and the sealing block on the surface to adjust the position, the connection position inside the hydraulic reversing valve can be changed, which is convenient for users to adjust the position and direction through the hydraulic telescopic rod, ensuring the stability of the connection and facilitating the adjustment of the direction;

[0023] Furthermore, by setting the sealing block, the sealing and the connection can be accurately controlled, the operation is simple, and the operation is convenient for the user, and the sealing and the connection effect are easy to adjust, and the directions that can be changed are two groups, which is more convenient and practical;

[0024] 2. The damping rod between the clamping plate and the inner wall of the installation channel is used to reduce vibration, ensure that the clamping plate fits the fixed pipe, and avoid the pipe connection position being vibrated and offset when the device is used, so as to limit the position of the fixed pipe. With the fit of the anti-slip pad, the friction between the clamping plate and the fixed pipe is increased to ensure the stability of the clamping, improve the fixing effect of the fixed pipe, avoid the fixed pipe from loosening, and ensure the stability of the connection;

[0025] Furthermore, the inflatable airbag is squeezed to deliver the air inside to the sealing airbag through the first air guide tube. After the sealing airbag is expanded, it seals and fits the fixed pipe. The sealing airbags on one side are connected by a connecting tube, and the air is intercommunicated, so that the effect of sealing and fitting can be achieved, thereby avoiding leakage of liquid when the hydraulic reversing valve is transporting liquid, ensuring the airtightness of the hydraulic reversing valve when transporting liquid, and preventing waste of resources.

[0026] 3. The rotating rod improves the rotating effect under the action of the rotating shaft, so that the valve body is knocked by the knocking block, and the blown gas is finally discharged through the air outlet at the upper end. When the hydraulic telescopic rod is reset, the extrusion plate stops squeezing the elastic airbag, and the elastic airbag inhales air through the one-way valve inside the one-way air inlet and expands again. As the air is blown, the knocking block can knock on the valve body inside the knocking bin to avoid blockage inside the valve body and achieve an anti-blockage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in front view;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the reversing valve in the connected state of the present invention;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the reversing valve in the closed state of the present invention;

[0031] Figure 5 It is a three-dimensional structural schematic diagram of the reversing state of the reversing valve of the present invention;

[0032] Figure 6 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0033] Figure 7 It is a schematic diagram of the three-dimensional structure of the sealing connection mechanism of the present invention;

[0034] Figure 8 It is a schematic diagram of the three-dimensional structure of the elastic airbag of the present invention in top cross-section;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the knocking chamber of the present invention in a side section;

[0036] Fig.10 It is a schematic diagram of the structure of the knocking anti-blocking mechanism of the present invention.

[0037] In the figure: 1. valve body; 2. first upper port; 3. second upper port; 4. first lower port; 5. second lower port; 6. third lower port; 7. hydraulic telescopic rod; 8. movable adjustment rod; 9. sealing block; 10. installation channel; 11. fixed pipe; 12. threaded section; 13. damping rod; 14. clamping plate; 15. anti-skid pad; 16. return spring; 17. extrusion plate; 18. push plate; 19. inflatable airbag; 20. limit block; 21. limit groove; 22. first air guide tube; 23. sealing airbag; 24. connecting pipe; 25. positioning chamber; 26. elastic airbag; 27. second air guide tube; 28. knocking chamber; 29. ​​one-way air inlet; 30. fixing part; 31. jet nozzle; 32. rotating rod; 33. rotating shaft; 34. knocking block; 35. air collecting plate; 36. air outlet. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] like Figure 1-Figure 5 The technical solution shown, in order to solve the problem of unstable flow direction of liquid changed by hydraulic reversing valve, discloses: a valve body 1 and a first upper port 2 and a second upper port 3 opened at the upper end of the valve body 1, and a first lower port 4, a second lower port 5 and a third lower port 6 are opened at the bottom of the valve body 1, and a hydraulic telescopic rod 7 is fixedly installed on the left side of the valve body 1, and a movable adjustment rod 8 is fixedly installed on the output end of the hydraulic telescopic rod 7, and the movable adjustment rod 8 is embedded in the interior of the valve body 1, and a convenient reversing mechanism is arranged on the right side of the movable adjustment rod 8, and the convenient reversing mechanism is provided with a sealing block 9, the lower end of the first upper port 2 is communicated with the first lower port 4 and the second lower port 5, and the second upper port 3 is communicated with the second lower port 5 and the third lower port 6, the sealing block 9 is fixedly installed on the right side of the movable adjustment rod 8, and the number of the sealing blocks 9 is two, and the position of the sealing block 9 corresponds to the first upper port 2 and the second upper port 3;

[0041] In the embodiment, the position of the movable adjustment rod 8 is controlled by the hydraulic telescopic rod 7, and the communication inside the valve body 1 can be controlled under the influence of the sealing block 9, such as Figure 3 In the state shown, the first upper port 2 is connected to the first lower port 4, and the second upper port 3 is connected to the second lower port 5. Under the influence of the sealing block 9, the stability of the connection is ensured. Figure 4In the state, the sealing block 9 seals the upper port and the lower port, so that the internal seal of the hydraulic reversing valve is not connected, and in Figure 5 In the state, the first upper port 2 is connected with the second lower port 5, and the second upper port 3 is connected with the third lower port 6, so as to achieve the effect of reversing, and it is convenient for the user to adjust the position and reversing through the hydraulic telescopic rod 7, so as to ensure the stability of the connection and facilitate the adjustment of the reversing;

[0042] Embodiment 2:

[0043] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 The technical solution shown, in order to solve the problem that the connection position between the hydraulic reversing valve and the pipeline is unstable and prone to leakage, discloses: a mounting channel 10 is fixedly installed at the upper end of the first upper port 2, and a sealing connection mechanism is provided inside the mounting channel 10, and the sealing connection mechanism is provided with a threaded section 12, and a fixed pipeline 11 is provided inside the mounting channel 10, and the fixed pipeline 11 is threadedly installed inside the mounting channel 10 through the threaded section 12, and a reset spring 16 is fixedly installed on the inner wall of the mounting channel 10, and a clamping plate 14 is fixedly installed on the inner side of the reset spring 16, and an anti-slip pad 15 is fixedly installed on the inner wall of the clamping plate 14, and a damping rod 13 is provided between the clamping plate 14 and the inner wall of the mounting channel 10, and the position of the clamping plate 14 corresponds to the fixed pipeline 11, and the liquid An extrusion plate 17 is fixedly installed at the middle end of the output end of the compression telescopic rod 7, and a push plate 18 is fixedly installed at the upper end of the extrusion plate 17, and limit blocks 20 are fixedly installed at the front and rear ends of the push plate 18, an inflatable airbag 19 is fixedly installed at the upper left end of the valve body 1, and the inflatable airbag 19 corresponds to the position of the extrusion plate 17, and a limit groove 21 is provided at the front and rear of the valve body 1, and the connection mode of the limit block 20 and the limit groove 21 is a sliding connection, a first air guide tube 22 is installed through the upper end of the inflatable airbag 19, and a sealing airbag 23 is installed through the upper end of the first air guide tube 22, and the outer side of the sealing airbag 23 is in contact with the inner wall of the installation channel 10, and the inner wall of the sealing airbag 23 corresponds to the outer side of the fixed pipe 11, and the sealing airbags 23 are connected to each other through a connecting pipe 24;

[0044] In the embodiment, an installation channel 10 is provided on the outer side of the upper port and the lower port. The interior of the installation channel 10 is connected to the bottom thread of the fixed pipe 11 through the threaded section 12, which can be easily disassembled and installed. At the same time, a return spring 16 and a clamping plate 14 are provided on the inner wall of the installation channel 10. The outer side of the clamping plate 14 is inclined. Therefore, when the fixed pipe 11 is installed, it can be embedded along the inclined opening of the outer side of the clamping plate 14. With the embedding of the inclined opening of the clamping plate 14, the installation of the fixed pipe 11 is convenient. The clamping plate 14 fits the fixed pipe 11 under the elastic force of the return spring 16. At the same time, the damping rod 13 between the clamping plate 14 and the inner wall of the installation channel 10 is used to reduce shock, ensure that the clamping plate 14 fits the fixed pipe 11, and avoid the pipe connection position being vibrated and offset when the device is used, so as to limit the position of the fixed pipe 11. When the anti-slip pad 15 is fitted, the friction between the clamping plate 14 and the fixed pipe 11 is increased to ensure the stability of the clamping and improve the fixing of the pipe 11. The fixing effect is achieved to prevent the fixed pipe 11 from loosening and ensure the stability of the connection. When the hydraulic telescopic rod 7 pushes the movable adjusting rod 8, a push plate 18 is provided on the upper end of the extrusion plate 17 on the surface of the hydraulic telescopic rod 7. The push plate 18 slides along the limiting groove 21 under the limit of the limiting block 20, thereby squeezing the inflatable airbag 19. The inflatable airbag 19 is squeezed to transport the internal air to the sealing airbag 23 through the first air guide pipe 22. After the sealing airbag 23 expands, the fixed pipe 11 is further sealed and fitted. Since the sealing airbag 23 itself is sealed and fitted with the fixed pipe 11, as the inflatable airbag 19 transports the gas to the sealing airbag 23 through the first air guide pipe 22, a better seal can be achieved with further inflation. The sealing airbags 23 on one side are connected by a connecting pipe 24, and the air is intercommunicated, thereby achieving a sealing effect, avoiding leakage of liquid when the hydraulic reversing valve is transporting liquid, ensuring the airtightness of the hydraulic reversing valve when transporting liquid, and preventing waste of resources.

[0045] Embodiment three:

[0046] like Figure 1 , Figure 2 , Figure 8 , Fig. 9 and Fig.10The technical solution shown, in order to solve the problem that the inside of the hydraulic reversing valve is easily blocked by impurities, discloses: a knocking bin 28 is fixedly installed at the front and rear ends of the valve body 1, and the inner wall of the knocking bin 28 is provided with a knocking anti-blocking mechanism, and the knocking anti-blocking mechanism is provided with a rotating rod 32, and the inner wall of the rotating rod 32 is rotatably installed inside the knocking bin 28, the knocking bin 28 and the rotating rod 32 are connected by a rotating shaft 33, and a knocking block 34 is fixedly installed at the middle end of the rotating rod 32, and a wind collecting plate 35 is fixedly installed at the lower end of the knocking block 34, and the upper end of the knocking block 34 corresponds to the outer wall of the valve body 1, and a positioning bin 25 is fixedly installed on the left side of the valve body 1, and an elastic The airbag 26, and the elastic airbag 26 corresponds to the position of the extrusion plate 17, and the elastic airbag 26 is made of elastic material, the outer side of the elastic airbag 26 is penetrated by a second air guide tube 27, and the right side of the second air guide tube 27 is penetrated by a knocking bin 28, and the right side of the second air guide tube 27 is connected with an air jet 31, and the outer side of the air jet 31 is fixedly installed on the inner wall of the knocking bin 28, the air jet 31 is aligned with the air collecting plate 35, and an air outlet 36 is opened at the upper end of the knocking bin 28, a one-way air inlet 29 is penetrated by the upper end of the elastic airbag 26, and a one-way valve is arranged inside the one-way air inlet 29, and the surface of the second air guide tube 27 is fixedly installed on the outer wall of the valve body 1 through a fixing member 30;

[0047] In the embodiment, when the hydraulic telescopic rod 7 pushes the movable adjustment rod 8, the squeezing plate 17 slides along the inside of the positioning chamber 25, and the squeezing plate 17 squeezes the elastic airbag 26. The elastic airbag 26 is squeezed to transport the air inside to the air jet 31 through the second air guide pipe 27. The second air guide pipe 27 is limited and fixed to the outer wall of the valve body 1 by the fixing member 30. After receiving the gas, the air jet 31 is aligned with the air collecting plate 35. Under the blowing of the air, the air collecting plate 35 drives the rotating rod 32 to rotate, and the rotating rod 32 The rotation effect is improved under the action of the rotating shaft 33, so that the valve body 1 is knocked by the knocking block 34, and the blown gas is finally discharged through the air outlet 36 at the upper end. When the hydraulic telescopic rod 7 is reset, the extrusion plate 17 stops squeezing the elastic airbag 26, and the elastic airbag 26 absorbs air through the one-way valve inside the one-way air inlet 29 and expands again. As the air is blown, the knocking block 34 can knock on the valve body 1 inside the knocking chamber 28, thereby avoiding blockage inside the valve body 1 and achieving an anti-blockage effect.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-clogging hydraulic reversing valve, comprising a valve body (1) and a first upper port (2) and a second upper port (3) provided at the upper end of the valve body (1), and a first lower port (4), a second lower port (5) and a third lower port (6) provided at the bottom of the valve body (1), and a hydraulic telescopic rod (7) fixedly mounted on the left side of the valve body (1), and a movable adjustment rod (8) fixedly mounted on the output end of the hydraulic telescopic rod (7); Features: The movable adjustment rod (8) is embedded in the interior of the valve body (1), and a convenient reversing mechanism is provided on the right side of the movable adjustment rod (8), and the convenient reversing mechanism is provided with a sealing block (9), the sealing block (9) is fixedly mounted on the right side of the movable adjustment rod (8), and the number of the sealing blocks (9) is two, and the positions of the sealing blocks (9) correspond to the first upper port (2) and the second upper port (3); A mounting channel (10) is fixedly mounted on the upper end of the first upper port (2), a sealing connection mechanism is provided inside the mounting channel (10), the sealing connection mechanism is provided with a threaded section (12), and a fixed pipe (11) is provided inside the mounting channel (10); The fixed pipe (11) is threadably mounted inside the mounting channel (10) via a threaded section (12), a return spring (16) is fixedly mounted on the inner wall of the mounting channel (10), and a clamping plate (14) is fixedly mounted on the inner side of the return spring (16); An anti-slip pad (15) is fixedly mounted on the inner wall of the clamping plate (14), a damping rod (13) is arranged between the clamping plate (14) and the inner wall of the installation channel (10), and the position of the clamping plate (14) corresponds to that of the fixed pipe (11); An extrusion plate (17) is fixedly mounted at the middle end of the output end of the hydraulic telescopic rod (7), a push plate member (18) is fixedly mounted at the upper end of the extrusion plate (17), and limit blocks (20) are fixedly mounted at the front and rear ends of the push plate member (18); An inflatable airbag (19) is fixedly mounted on the upper left end of the valve body (1), and the position of the inflatable airbag (19) corresponds to that of the extrusion plate (17), and a limit groove (21) is provided at the front and rear of the valve body (1), and the limit block (20) is connected to the limit groove (21) in a sliding manner, a first air guide tube (22) is penetrated through the upper end of the inflatable airbag (19), and a sealing airbag (23) is penetrated through the upper end of the first air guide tube (22), and the outer side of the sealing airbag (23) is in contact with the inner wall of the installation channel (10), and the inner wall of the sealing airbag (23) corresponds to the outer side of the fixed pipe (11), and the sealing airbags (23) are connected to each other through a connecting pipe (24); A knocking chamber (28) is fixedly mounted on the front and rear ends of the valve body (1), and a knocking anti-blocking mechanism is provided on the inner wall of the knocking chamber (28), and the knocking anti-blocking mechanism is provided with a rotating rod (32), and the inner wall of the rotating rod (32) is rotatably mounted inside the knocking chamber (28); The knocking bin (28) and the rotating rod (32) are connected via a rotating shaft (33), a knocking block (34) is fixedly mounted on the middle end of the rotating rod (32), an air collecting plate (35) is fixedly mounted on the lower end of the knocking block (34), and the upper end of the knocking block (34) corresponds to the outer wall of the valve body (1); A positioning chamber (25) is fixedly mounted on the left side of the valve body (1), and an elastic airbag (26) is arranged inside the positioning chamber (25), and the position of the elastic airbag (26) corresponds to that of the extrusion plate (17), and the elastic airbag (26) is made of an elastic material; A second air guide tube (27) is installed through the outer side of the elastic air bag (26), and a knocking bin (28) is installed through the right side of the second air guide tube (27), and the right side of the second air guide tube (27) is connected to an air jet (31), and the outer side of the air jet (31) is fixedly installed on the inner wall of the knocking bin (28), the air jet (31) is aligned with the air collecting plate (35), and an air outlet (36) is provided at the upper end of the knocking bin (28), a one-way air inlet (29) is installed through the upper end of the elastic air bag (26), and a one-way valve is provided inside the one-way air inlet (29), and the surface of the second air guide tube (27) is fixedly installed on the outer wall of the valve body (1) through a fixing member (30).

2. The anti-clogging hydraulic reversing valve according to claim 1, characterized in that: The lower end of the first upper port (2) is in communication with the first lower port (4) and the second lower port (5), and the second upper port (3) is in communication with the second lower port (5) and the third lower port (6).

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