High temperature anti-condensation hydraulic pump check valve

Abstract

This invention relates to the field of hydraulic pump technology, specifically to a high-temperature anti-condensation hydraulic pump check valve, comprising a pump body, an inlet check valve fixedly installed at the bottom of the pump body, an inlet manifold fixedly installed on one side of the inlet check valve via a flange, an outlet check valve fixedly installed at the top of the pump body, an outlet manifold fixedly installed on one side of the outlet check valve via a flange, and an anti-condensation mechanism provided on the outside of the pump body, the anti-condensation mechanism including a connecting module, a linking module, and a positioning module. This invention, through the design of the connecting module, facilitates the formation of a unique heat-insulating channel between the first and second gas delivery channels. The heat-insulating channel connects the pump body, the inlet check valve, the inlet manifold, the outlet check valve, and the outlet manifold, comprehensively covering the possible flow range of the material. High-temperature steam circulates within the heat-insulating channel, improving the heat insulation effect and ensuring that the material transported by the pump remains above the condensation temperature.

Description

Technical Field

[0001] This invention relates to the field of hydraulic pump technology, and in particular to a high-temperature anti-condensation hydraulic pump check valve. Background Technology

[0002] With the continuous changes in market demand, the transportation of high-temperature condensable materials has become a major challenge. While transportation equipment with a freezing point below 100℃ is available on the market, those with a freezing point above 100℃ are particularly difficult to control.

[0003] The conveying of high-temperature condensable materials requires that the temperature at each point of the hydraulic pump be stably controlled above the material's freezing point. However, the existing hydraulic pumps have poor connection effects, the connection of the conveying pipes is not convenient or quick enough, and the temperature difference is large. Existing sealing materials are prone to thermal expansion and contraction, and the deformation is difficult to control. The leakage of the one-way valve caused by the temperature difference is difficult to eliminate.

[0004] To address this, a one-way valve for a high-temperature anti-condensation hydraulic pump is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature anti-condensation hydraulic pump check valve to solve the problem of easy condensation during material transportation mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature anti-condensation hydraulic pump check valve, comprising a pump body, an inlet check valve fixedly installed at the bottom of the pump body, an inlet manifold pipe fixedly installed on one side of the inlet check valve via a flange, an outlet check valve fixedly installed at the top of the pump body, an outlet manifold pipe fixedly installed on one side of the outlet check valve via a flange, and an anti-condensation mechanism provided on the outside of the pump body, the anti-condensation mechanism comprising a connecting module, a linking module, and a positioning module, the connecting module being used to circulate high-temperature steam to ensure that the material conveyed by the pump body can always be kept above the condensation temperature, the linking module being used to quickly assemble and install in conjunction with the connecting module, and the positioning module being used to fix in conjunction with the linking module.

[0007] Preferably, the connecting module includes a first air supply channel opened around the outside of the pump body. The first air supply channel is connected to a second air supply channel through a first connecting pipe and connecting fittings. The second air supply channel is opened around the outside of the inlet check valve and the outlet check valve. The inlet check valve and the outlet check valve are connected to the outside of the inlet manifold and the outlet manifold respectively through a second connecting pipe and a third connecting pipe.

[0008] Preferably, the connecting module includes a tube clamping groove inside the first connecting tube, the tube clamping groove being fixedly connected inside the connecting pipe fitting, and adjusting blocks being rotatably connected to both sides of the connecting pipe fitting, with the first connecting tube being threadedly connected to the adjusting blocks.

[0009] Preferably, both the tube slot and the tube are polygonal, and the tube slot is adapted to the tube.

[0010] Preferably, the connecting pipe fitting has a clamping part in the middle, and the clamping part is hexagonal.

[0011] Preferably, the positioning module includes a slide groove on the outside of the connecting pipe, one end of a first return spring is fixedly connected inside the slide groove, the other end of the first return spring is fixedly connected to an annular plate, one end of the annular plate is attached to the cylinder, the other end of the cylinder is fixedly connected to a locking block, the locking block is inserted into a locking block groove, the locking block groove is evenly opened on the adjusting block, and a pull plate is fixedly connected to the outside of the cylinder.

[0012] Preferably, the pull plate has a sliding hole, which is fitted onto the slide rail. The slide rail is fixedly connected to the side wall of the slide groove. The pull plate has a positioning groove, and both the sliding hole and the positioning groove are adapted to the slide rail.

[0013] Preferably, both the inlet check valve and the outlet check valve are equipped with a protection mechanism. The protection mechanism includes a butterfly spring fixedly connected to the outside of the inlet check valve and the outlet check valve. A valve pressure plate is fixedly connected to the upper end of the butterfly spring. The valve pressure plate is fixedly installed on the upper end of the valve sleeve by screws. The valve sleeve is movably connected to the inside of the inlet check valve. A guide hole is opened at the bottom end of the valve sleeve, and a valve core is inserted into the guide hole. A second return spring is sleeved on the outside of the valve core.

[0014] Preferably, the bottom end of the valve core is fitted inside the valve seat, and the valve seat is fixedly installed inside the inlet check valve and the outlet check valve. A wear-resistant alloy ring is welded to the contact area between the valve seat and the valve core.

[0015] Preferably, the upper end of the wear-resistant alloy ring is curved, and the pump body and the inlet check valve are rigidly sealed by a conical surface and a circular arc surface through the sealing ring.

[0016] The beneficial effects of this invention are: 1. By designing a connecting module, this invention facilitates the formation of a unique heat-insulating channel between the first and second gas delivery channels. The heat-insulating channel connects the pump body, inlet check valve, inlet manifold, outlet check valve, and outlet manifold, comprehensively covering the possible flow range of the material. High-temperature steam circulates within the heat-insulating channel, improving the heat-insulating effect and ensuring that the material delivered by the pump can always be kept above the condensation temperature.

[0017] 2. By designing a connecting module in conjunction with a communication module, this invention facilitates the retraction of the two sets of first connecting pipes into the connecting pipe fittings, enabling quick assembly and disassembly of the two sets of first connecting pipes, facilitating gas transportation, and allowing for flexible adjustment according to working conditions, thereby improving the convenience and stability of installation.

[0018] 3. By designing a positioning module in conjunction with a connecting module, this invention facilitates the quick fixing of adjustment blocks at different angles onto the connecting pipe, preventing the first connecting pipe from sliding against the adjustment block, improving the stability of the connection, and allowing for the removal of the fixing of the adjustment block without affecting its adjustment effect.

[0019] 4. This invention improves the one-way valve structure through the design of a protective mechanism. The inlet and outlet manifolds are placed on the sides of the inlet and outlet one-way valves, eliminating the need to disassemble them. Disassembly of the inlet and outlet one-way valves only requires removing the pressure plate, making maintenance very convenient and reducing operating costs. Furthermore, a butterfly spring is incorporated to adjust for different operating conditions. When the sealing pressure decreases, a constant elastic force acts on the sealing surface, producing excellent sealing performance. The pump body and the inlet one-way valve use a sealing ring for a rigid conical and arc-shaped surface seal, as does the valve seat and the inlet one-way valve, forming a ring seal. Compared to traditional surface contact, this provides a better sealing effect and reduces backflow. A spring reset structure is used between the valve core and the valve sleeve to force the valve core to reset, ensuring stable valve operation. Additionally, a wear-resistant alloy ring is welded to the contact area between the valve core and the valve seat and then machined into a curved surface, significantly reducing valve seat wear and extending the life of the one-way valve. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of a high-temperature anti-condensation hydraulic pump check valve according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of a high-temperature anti-condensation hydraulic pump check valve according to an embodiment of the present invention; Figure 3 This invention relates to a one-way valve for a high-temperature anti-condensation hydraulic pump. Figure 1 Enlarged view of point A in the middle; Figure 4 This invention relates to a one-way valve for a high-temperature anti-condensation hydraulic pump. Figure 2 Enlarged view of point B in the middle; Figure 5 This is a partial three-dimensional schematic diagram of a high-temperature anti-condensation hydraulic pump check valve according to an embodiment of the present invention; Figure 6 This invention relates to a one-way valve for a high-temperature anti-condensation hydraulic pump. Figure 5 Schematic diagram of cross-section at the CC section; Figure 7 This is a partial explosion diagram of a high-temperature anti-condensation hydraulic pump check valve according to an embodiment of the present invention; Figure 8 This invention relates to a one-way valve for a high-temperature anti-condensation hydraulic pump. Figure 7 Enlarged diagram of point D in the middle.

[0022] The following are labeled in the diagram: 1. Pump body; 2. Inlet check valve; 3. Inlet manifold; 4. Outlet check valve; 5. Outlet manifold; 6. First gas delivery channel; 7. First connecting pipe; 8. Connecting fitting; 9. Second gas delivery channel; 10. Second connecting pipe; 11. Third connecting pipe; 12. Pipe clamping groove; 13. Pipe clamp; 14. Adjusting block; 15. Clamping part; 16. Slide groove; 17. First return spring; 18. Annular plate; 19. Cylinder; 20. Clamping block; 21. Clamping block groove; 22. Pull plate; 23. Slide hole; 24. Slide rail; 25. Positioning groove; 26. Butterfly spring; 27. Valve pressure plate; 28. Valve sleeve; 29. ​​Guide hole; 30. Valve core; 31. Second return spring; 32. Valve seat; 33. Sealing ring; 34. Wear-resistant alloy ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0024] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Please see Figures 1 to 8This invention provides a technical solution: a high-temperature anti-condensation hydraulic pump check valve, comprising a pump body 1, an inlet check valve 2 fixedly installed at the bottom of the pump body 1, an inlet manifold 3 fixedly installed on one side of the inlet check valve 2 via a flange, an outlet check valve 4 fixedly installed at the upper end of the pump body 1, an outlet manifold 5 fixedly installed on one side of the outlet check valve 4 via a flange, and an anti-condensation mechanism provided on the outside of the pump body 1, the anti-condensation mechanism comprising a connecting module, a linking module, and a positioning module, the connecting module being used to circulate high-temperature steam to ensure that the material conveyed by the pump body 1 can always be kept above the condensation temperature, the linking module being used to quickly assemble and install with the connecting module, and the positioning module being used to fix with the linking module.

[0026] As one embodiment of the present invention, such as Figure 1 and Figure 2 as well as Figure 3 As shown, the connecting module includes a first gas supply channel 6 located around the outer periphery of the pump body 1. The first gas supply channel 6 is connected to a second gas supply channel 9 via a first connecting pipe 7 and a connecting fitting 8. The second gas supply channel 9 is located around the outer periphery of the inlet check valve 2 and the outlet check valve 4. The inlet check valve 2 and the outlet check valve 4 are connected to the outer periphery of the inlet manifold 3 and the outlet manifold 5 via a second connecting pipe 10 and a third connecting pipe 11, respectively. In use, the high-temperature steam from the first gas supply channel 6 outside the pump body 1 is delivered to the inlet check valve 2 and the outlet check valve 4 via the first connecting pipe 7 and the connecting fitting 8. The high-temperature steam in the second gas delivery channel 9 on the outside is then transported to the outside of the inlet manifold 3 and the outlet manifold 5 through the second connecting pipe 10 and the third connecting pipe 11. This facilitates the formation of a unique heat-insulating channel between the first gas delivery channel 6 and the second gas delivery channel 9. The heat-insulating channel connects the pump body 1, the inlet check valve 2, the inlet manifold 3, the outlet check valve 4, and the outlet manifold 5, thus covering the entire range of possible material flow. The high-temperature steam circulates within the heat-insulating channel, improving the heat-insulating effect and ensuring that the material transported by the pump can always be kept above the condensation temperature.

[0027] As one embodiment of the present invention, such as Figure 5 and Figure 7 as well as Figure 8As shown, the connecting module includes a tube clamping groove 12 inside the first connecting pipe 7, in which a tube clamping tube 13 is clamped. The tube clamping tube 13 is fixedly connected inside the connecting pipe fitting 8. Adjusting blocks 14 are rotatably connected to both sides of the connecting pipe fitting 8. The adjusting blocks 14 are threadedly connected to the first connecting pipe 7. Both the tube clamping groove 12 and the tube clamping tube 13 are polygonal in shape, and the tube clamping groove 12 is adapted to the tube clamping tube 13. A clamping part 15 is provided in the middle of the connecting pipe fitting 8. The clamping part 15 is hexagonal in shape. The tube clamping tube 13 is inserted into the tube clamping groove 12, and then the adjusting block 14 is rotated with an external wrench. Because the adjusting blocks 14 are rotatably connected to both ends of the connecting pipe fitting 8, the tube clamping tube 13 is inserted into the tube clamping groove 12. Then the adjusting block 14 is rotated with an external wrench. 4. The slide groove 16 is threadedly connected to the first connecting pipe 7. The polygonal setting of the pipe clamping groove 12 and pipe clamping 13 restricts the rotation of the connecting pipe fitting 8. Therefore, the connecting pipe fitting 8 cannot rotate with the adjusting block 14. Thus, the first connecting pipe 7 threadedly connected to the adjusting block 14 can stably enter the connecting pipe fitting 8. The middle part of the connecting pipe fitting 8 is set as a clamping part 15, which is convenient for clamping and stabilizing the position of the connecting pipe fitting 8. It is beneficial to retract the two sets of first connecting pipes 7 into the connecting pipe fitting 8, which facilitates the quick assembly and disassembly of the two sets of first connecting pipes 7, facilitates gas transportation, and can be flexibly adjusted according to the working conditions, improving the convenience and stability of installation.

[0028] As one embodiment of the present invention, such as Figure 6 and Figure 7 as well as Figure 8 As shown, the positioning module includes a slide groove 16 formed on the outside of the connecting pipe 8. One end of a first return spring 17 is fixedly connected inside the slide groove 16, and the other end of the first return spring 17 is fixedly connected to an annular plate 18. The annular plate 18 is attached to one end of a cylinder 19, and the other end of the cylinder 19 is fixedly connected to a locking block 20, which is inserted into a locking block slot 21. The locking block slots 21 are evenly distributed on the adjusting blocks 14. A pull plate 22 is fixedly connected to the outside of the cylinder 19. The pull plate 22 has a sliding hole 23, which is fitted onto a slide rail 24. The slide rail 24 is fixedly connected to the side wall of the slide groove 16. The pull plate 22 has a positioning groove 25, and both the sliding hole 23 and the positioning groove 25 are adapted to the slide rail 24. Pulling the pull plate 22... The locking block 20 on one side of the cylinder 19 is disengaged from the locking block groove 21 and enters the slide groove 16. Then, the sliding hole 23 on the pull plate 22 is disengaged from 24. Next, the pull plate 22 is rotated to make the slide rail 24 lock in the positioning groove 25, thereby locking the locking block 20 in the slide groove 16. Finally, the pull plate 22 is rotated to make the slide rail 24 return to the sliding hole 23. The restoring force of the first return spring 17 drives the locking block 20 into another set of locking block grooves 21 on the adjusting block 14 through the annular plate 18. This is beneficial for quickly fixing the adjusting blocks 14 at different angles to the connecting pipe 8, avoiding the first connecting pipe 7 from sliding with the adjusting block 14, improving the stability of the connection, and allowing the fixing of the adjusting block 14 to be removed without affecting the adjustment effect of the adjusting block 14.

[0029] As one embodiment of the present invention, such as Figure 1and Figure 2 as well as Figure 4 Both the inlet check valve 2 and the outlet check valve 4 shown are equipped with protective mechanisms. These mechanisms include a butterfly spring 26 fixedly connected to the outside of both valves. A valve pressure plate 27 is fixedly connected to the upper end of the butterfly spring 26. The valve pressure plate 27 is fixedly installed on the upper end of the valve sleeve 28 by screws. The valve sleeve 28 is movably connected inside the inlet check valve 2. A guide hole 29 is provided at the bottom end of the valve sleeve 28, through which a valve core 30 is inserted. A second return spring 31 is fitted onto the outside of the valve core 30. The bottom end of the valve core 30 is engaged inside the valve seat 32, which is fixedly installed inside both the inlet check valve 2 and the outlet check valve 4. A wear-resistant alloy ring 34 is welded to the contact area between the valve seat 32 and the valve core 30. The upper end of the wear-resistant alloy ring 34 is curved. The pump body 1 and the inlet check valve 2 are rigidly sealed by a conical surface and a circular arc surface through the sealing ring 33. In use, the traditional inlet check valve 2 and outlet check valve 4 are disassembled in the up and down direction. The inlet manifold 3 and outlet manifold 5 are installed above and below the check valves respectively. Before disassembling the inlet check valve 2 and outlet check valve 4, the inlet manifold 3 and outlet manifold 5 must be completely removed before the inlet check valve 2 and outlet check valve 4 can be disassembled, which is very troublesome. This improves the check valve structure by removing the inlet manifold 3 and outlet manifold 5. The outlet manifold 5 is placed on the side of the inlet check valve 2 and the outlet check valve 4, eliminating the need to disassemble the inlet manifold 3 and the outlet manifold 5. Disassembling the inlet check valve 2 and the outlet check valve 4 only requires removing the pressure plate, making maintenance very convenient and reducing operating costs. Furthermore, a butterfly spring 26 is installed between the valve pressure plate 27 and the valve sleeve 28. When the temperature decreases, the sealing gaskets shrink, causing a decrease in sealing pressure. The butterfly spring 26 generates a constant elastic force on the sealing surface, producing an excellent sealing effect, which can be adjusted according to different operating conditions. The pump body 1 and the inlet check valve 2 use a sealing ring 33 for a rigid seal between the conical and arc-shaped surfaces. The valve seat 32... The imported check valve 2 also adopts a conical and arc-shaped rigid seal, forming an annular seal. Compared with the traditional surface contact, the sealing effect is better and the backflow is smaller. The valve core 30 can be guided through the guide hole 29 and the valve seat 32, and reset by the second return spring 31 to ensure that the valve core can maintain reciprocating accuracy during the movement. A spring reset structure is adopted between the valve core 30 and the valve sleeve 28 to force the valve core 30 to reset, ensuring stable valve operation. Furthermore, a wear-resistant alloy ring 34 is welded to the collision contact area between the valve core 30 and the valve seat 32 and then machined into a curved surface, which greatly reduces the wear of the valve seat 32, thereby extending the service life of the check valve.

[0030] Working principle: When in use, the high-temperature steam in the first gas delivery channel 6 outside the pump body 1 is delivered to the second gas delivery channel 9 outside the inlet check valve 2 and the outlet check valve 4 through the first connecting pipe 7 and the connecting pipe fitting 8. Then, the high-temperature steam in the second gas delivery channel 9 is delivered to the outside of the inlet manifold 3 and the outlet manifold 5 through the second connecting pipe 10 and the third connecting pipe 11. Insert the clamping tube 13 into the clamping tube groove 12, and then use an external wrench to rotate the adjusting block 14. Because the adjusting block 14 is rotated at both ends of the connecting pipe 8, the sliding groove 16 is threadedly connected to the first connecting pipe 7. The polygonal clamping groove 12 and clamping tube 13 restrict the rotation of the connecting pipe 8, so the connecting pipe 8 cannot rotate with the adjusting block 14. Thus, the first connecting pipe 7 threadedly connected to the adjusting block 14 can stably enter the connecting pipe 8. Furthermore, the middle part of the connecting pipe 8 is set as a clamping part 15, which facilitates the clamping and stabilizing of the position of the connecting pipe 8. Pull the pull plate 22 to disengage the locking block 20 on one side of the cylinder 19 from the locking block groove 21 and enter the slide groove 16. Then, disengage the slide hole 23 on the pull plate 22 from the 24. Next, rotate the pull plate 22 to lock the slide rail 24 into the positioning groove 25, thereby locking the locking block 20 into the slide groove 16. Finally, rotate the pull plate 22 to return the slide rail 24 to the slide hole 23. The restoring force of the first reset spring 17 drives the locking block 20 into another set of locking block grooves 21 on the adjusting block 14 through the annular plate 18. In traditional use, the inlet check valve 2 and outlet check valve 4 are disassembled vertically. The inlet manifold 3 and outlet manifold 5 are installed above and below the check valves, respectively. Before disassembling the inlet check valve 2 and outlet check valve 4, the inlet manifold 3 and outlet manifold 5 must be completely removed, which is very cumbersome. An improved check valve structure places the inlet manifold 3 and outlet manifold 5 on the side of the inlet check valve 2 and outlet check valve 4, eliminating the need to disassemble them. Disassembling the inlet check valve 2 and outlet check valve 4 only requires removing the pressure plate. Furthermore, a connection is provided between the valve pressure plate 27 and the valve sleeve 28. A butterfly spring 26 is provided. When the sealing pressure decreases, the butterfly spring 26 will generate a constant elastic force on the sealing surface, resulting in excellent sealing effect. It can be adjusted according to different working conditions. The pump body 1 and the inlet check valve 2 are sealed with a conical surface and a circular arc surface using a sealing ring 33. The valve seat 32 and the inlet check valve 2 are also sealed with a conical surface and a circular arc surface. The valve core 30 can be guided through the guide hole 29 and the valve seat 32 and reset by the second return spring 31. A spring reset structure is used between the valve core 30 and the valve sleeve 28 to force the valve core 30 to reset. Furthermore, a wear-resistant alloy ring 34 is welded to the collision contact area between the valve core 30 and the valve seat 32 and then machined into a curved surface.

[0031] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0032] This invention is intended to cover all such substitutions, modifications, and alterations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A high-temperature anti-condensation hydraulic pump check valve, comprising a pump body (1), an inlet check valve (2) fixedly installed at the bottom end of the pump body (1), an inlet manifold (3) fixedly installed on one side of the inlet check valve (2) via a flange, an outlet check valve (4) fixedly installed at the upper end of the pump body (1), an outlet manifold (5) fixedly installed on one side of the outlet check valve (4) via a flange, and an anti-condensation mechanism provided on the outer side of the pump body (1), characterized in that: The anti-condensation mechanism includes a connecting module, a linking module, and a positioning module. The connecting module is used to circulate high-temperature steam to ensure that the material conveyed by the pump body (1) can always be kept above the condensation temperature. The linking module is used to quickly combine and install with the connecting module. The positioning module is used to fix with the linking module. The communication module includes a first air supply channel (6) opened around the outside of the pump body (1). The first air supply channel (6) is connected to a second air supply channel (9) through a first connecting pipe (7) and a connecting pipe fitting (8). Adjusting blocks (14) are rotatably connected to both sides of the connecting pipe fitting (8). The positioning module includes a slide groove (16) opened on the outside of the connecting pipe (8). One end of a first return spring (17) is fixedly connected inside the slide groove (16). The other end of the first return spring (17) is fixedly connected to an annular plate (18). One end of the annular plate (18) is attached to the cylinder (19). The other end of the cylinder (19) is fixedly connected to a locking block (20). The locking block (20) is inserted into the locking block groove (21). The locking block groove (21) is evenly opened on the adjusting block (14). A pull plate (22) is fixedly connected to the outside of the cylinder (19). The pull plate (22) has a sliding hole (23), which is fitted onto the slide rail (24). The slide rail (24) is fixedly connected to the side wall of the slide groove (16). The pull plate (22) has a positioning groove (25), and both the sliding hole (23) and the positioning groove (25) are adapted to the slide rail (24). The connection module includes a tube slot (12) and a tube (13). The tube slot (12) is opened inside the first connecting tube (7). The tube (13) is locked in the tube slot (12). The tube (13) is fixedly connected inside the connecting pipe fitting (8). The adjusting block (14) is threadedly connected to the first connecting tube (7). Both the tube slot (12) and the tube (13) are polygonal in shape, and the tube slot (12) and the tube (13) are adapted to each other.

2. The high-temperature anti-condensation hydraulic pump check valve according to claim 1, characterized in that, The second gas transmission channel (9) is located around the outside of the inlet check valve (2) and the outlet check valve (4). The inlet check valve (2) and the outlet check valve (4) are connected to the outside of the inlet manifold (3) and the outlet manifold (5) respectively through the second connecting pipe (10) and the third connecting pipe (11).

3. The high-temperature anti-condensation hydraulic pump check valve according to claim 1, characterized in that, The connecting pipe fitting (8) has a clamping part (15) in the middle, and the clamping part (15) is hexagonal.

4. The high-temperature anti-condensation hydraulic pump check valve according to claim 1, characterized in that, The inlet check valve (2) and the outlet check valve (4) are both equipped with a protection mechanism. The protection mechanism includes a butterfly spring (26) fixedly connected to the outside of the inlet check valve (2) and the outlet check valve (4). A valve pressure plate (27) is fixedly connected to the upper end of the butterfly spring (26). The valve pressure plate (27) is fixedly installed on the upper end of the valve sleeve (28) by screws. The valve sleeve (28) is movably connected to the inside of the inlet check valve (2). A guide hole (29) is opened at the bottom end of the valve sleeve (28). A valve core (30) is inserted into the guide hole (29). A second return spring (31) is sleeved on the outside of the valve core (30).

5. A high-temperature anti-condensation hydraulic pump check valve according to claim 4, characterized in that, The bottom end of the valve core (30) is fitted inside the valve seat (32). The valve seat (32) is fixedly installed inside the inlet check valve (2) and the outlet check valve (4). A wear-resistant alloy ring (34) is welded to the contact area between the valve seat (32) and the valve core (30).

6. A high-temperature anti-condensation hydraulic pump check valve according to claim 5, characterized in that, The upper end of the wear-resistant alloy ring (34) is curved, and the pump body (1) and the inlet check valve (2) are rigidly sealed by a sealing ring (33) using a conical surface and a circular arc surface.

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