High-pressure-resistant hydraulic valve seat sealing structure

Abstract

The utility model relates to a high-pressure-resistant hydraulic valve seat sealing structure, which aims to solve the technical problem that the sealing of a valve seat is directly influenced due to the looseness of a bolt for fixing a valve body and the valve seat at present, and comprises the valve seat and a hydraulic valve body, and four groups of second fixing holes are formed in the upper surface of the valve seat; the first fixing mechanism is used for fixedly connecting the valve seat and the hydraulic valve body, the hydraulic valve body can be fixedly installed above the valve seat through a first inner hexagon bolt penetrating through the first fixing hole and the second fixing hole, and the valve seat can be fixed to a designated position through a second inner hexagon bolt penetrating through the first installing hole and the second installing hole. Meanwhile, the connecting plate and the fixing plate can be fixed, the fixing plate and the connecting plate are installed on the outer side of the hydraulic valve body and the outer side of the valve seat, secondary fixing can be further conducted on the hydraulic valve body and the valve seat, and the situation that the connecting sealing performance of the hydraulic valve body and the valve seat is affected due to looseness of the first hexagon socket screws is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valves, specifically a high-pressure resistant hydraulic valve seat sealing structure. Background Technology

[0002] Hydraulic components can be divided into three main categories: power components, control components, and actuators. Although they are all hydraulic components, their functions and technical requirements for installation and use are not the same. In hydraulic systems, sealing devices are used to prevent leakage of the working medium and the intrusion of external dust and foreign objects.

[0003] According to the published patent CN210738968U, a hydraulic valve seat with good sealing performance includes a valve seat body. The valve seat body has an oil storage cavity inside. The valve seat body has a connecting through hole that penetrates the valve seat body and corresponds to the oil storage cavity. The valve seat body has two limiting grooves on its top. A sealing ring is fixedly installed on the top of the valve seat body. A sealing groove corresponding to the sealing ring is formed on the top of the valve seat body and on the outer surface of the sealing ring.

[0004] In the process of developing this utility model, the inventors discovered that at least the following problems remain unresolved in the prior art: The aforementioned example, by setting a sealing ring and a sealing groove, with the sealing ring and sealing groove engaging, achieves the effect of preventing leakage of the working medium and the intrusion of external dust and foreign objects when the valve seat and hydraulic valve are combined; however, during use, the bolts used to fix the valve seat and valve body will loosen over time, directly affecting the sealing performance of the connection between the valve body and valve seat. Therefore, a new technical solution needs to be designed to address this issue. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a high-pressure hydraulic valve seat sealing structure to solve the technical problem that the loosening of the bolts fixing the valve body and valve seat directly affects the valve seat sealing.

[0006] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: A high-pressure resistant hydraulic valve seat sealing structure is designed, including a valve seat and a hydraulic valve body. The upper surface of the valve seat has four sets of second fixing holes. A first fixing mechanism is used for the fixed connection between the valve seat and the hydraulic valve body. The first fixing mechanism includes four sets of first fixing holes, which vertically penetrate the four corners of the upper surface of the hydraulic valve body. The hydraulic valve body is fixed to the upper surface of the valve seat by first internal hexagonal bolts passing through the first and second fixing holes. A second fixing mechanism is used for the secondary fixing of the valve seat and the hydraulic valve body. The fixing mechanism includes a fixing plate, on which two sets of connecting plates are vertically fixed at both ends of the bottom side of the fixing plate. A first mounting hole is opened through the bottom end of the connecting plate, and a second mounting hole is opened through the four corners of the bottom side of the valve seat. The bottom end of the connecting plate is fixedly connected to the valve seat through the first mounting hole and the second fixing hole by a second hexagon socket bolt. The sealing mechanism is used to seal the connection end between the valve seat and the hydraulic valve body. The sealing mechanism includes a sealing ring and a sealing groove. The sealing ring is fixedly installed in the middle of the valve seat connection end, and the sealing groove is opened in the middle of the hydraulic valve body connection end. The sealing ring and the sealing groove are movably connected.

[0007] Preferably, the fixing plate is H-shaped, the connecting plate is L-shaped, and the fixing plate and connecting plate are matched with the dimensions of the hydraulic valve body and valve seat.

[0008] Preferably, the sealing groove is annular, the sealing ring matches the size of the sealing groove, and a sealing ring is detachably installed on the inner side of the sealing groove.

[0009] Preferably, two sets of storage slots are provided on both the front and rear sides of the lower surface of the fixing plate, and the nuts of the first hexagonal socket bolts are matched with the dimensions of the storage slots.

[0010] Preferably, a rubber pad is adhered to the bottom side of the fixing plate, and the rubber pad is in contact with the upper surface of the hydraulic valve body.

[0011] Preferably, the four first fixing holes on the upper surface of the hydraulic valve body correspond one-to-one with the four sets of second fixing holes on the upper surface of the valve seat, and the four sets of first mounting holes at the bottom of the connecting plate correspond one-to-one with the four sets of second mounting holes on the bottom side of the valve seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model uses a first hexagon socket bolt passing through a first fixing hole and a second fixing hole to fix the hydraulic valve body above the valve seat. A second hexagon socket bolt passing through the first mounting hole and the second mounting hole fixes the valve seat in a designated position. Simultaneously, it fixes the connecting plate and the fixing plate. Since the fixing plate and connecting plate are installed on the outside of the hydraulic valve body and valve seat, they further provide secondary fixation of the hydraulic valve body and valve seat, preventing the first hexagon socket bolt from loosening and affecting the connection and sealing performance of the hydraulic valve body and valve seat.

[0014] 2. In the installation process of the hydraulic valve body and valve seat, the sealing ring at the valve seat connection end can be inserted into the sealing groove at the hydraulic valve body connection end. The sealing ring can effectively seal the connection end between the valve seat and the hydraulic valve body, preventing leakage of the working medium and intrusion of external dust. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention;

[0016] Figure 2 This is a bottom side view of the present invention;

[0017] Figure 3 This is the front view of the present invention;

[0018] In the diagram: 1. Valve seat; 11. Hydraulic valve body; 12. First fixing hole; 13. Second fixing hole; 14. First hexagon socket head cap screw; 15. Fixing plate; 16. Connecting plate; 17. First mounting hole; 18. Second mounting hole; 19. Second hexagon socket head cap screw; 2. Sealing ring; 21. Sealing groove; 22. Sealing ring; 23. Receiving groove; 24. Rubber gasket. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] A high-pressure resistant hydraulic valve seat sealing structure, see [reference] Figures 1 to 3A high-pressure resistant hydraulic valve seat 1 sealing structure includes a valve seat 1 and a hydraulic valve body 11. The upper surface of the valve seat 1 has four sets of second fixing holes 13. A first fixing mechanism is used for the fixed connection between the valve seat 1 and the hydraulic valve body 11. The first fixing mechanism includes four sets of first fixing holes 12, which are vertically inserted through the four corners of the upper surface of the hydraulic valve body 11. The four first fixing holes 12 on the upper surface of the hydraulic valve body 11 correspond one-to-one with the four sets of second fixing holes 13 on the upper surface of the valve seat 1. The hydraulic valve body 11 is fixed to the valve seat 1 by first internal hexagonal bolts 14 passing through the first fixing holes 12 and the second fixing holes 13. The upper surface of valve seat 1; Second fixing mechanism: used for secondary fixing of valve seat 1 and hydraulic valve body 11. The second fixing mechanism includes fixing plate 15. Two sets of connecting plates 16 are vertically fixed at both ends of the bottom side of fixing plate 15. The bottom end of connecting plate 16 is provided with a first mounting hole 17. The four corners of the bottom side of valve seat 1 are provided with second mounting holes 18. The first mounting holes 17 at the bottom of the four sets of connecting plates 16 correspond one-to-one with the four sets of second mounting holes 18 on the bottom side of valve seat 1. The bottom end of connecting plate 16 is fixedly connected to valve seat 1 through the first mounting hole 17 and the second fixing hole 13 by second internal hex bolts 19.

[0021] Place the hydraulic valve body 11 above the valve seat 1, aligning the four first fixing holes 12 on the upper surface of the hydraulic valve body 11 with the four sets of second fixing holes 13 on the upper surface of the valve seat 1. Then, use first internal hex bolts 14 to pass through the first fixing holes 12 and the second fixing holes 13 in sequence to fix the hydraulic valve body 11 to the valve seat 1. Next, place the fixing plate 15 horizontally on the upper surface of the hydraulic valve body 11, so that the four sets of connecting plates 16 on the outside of the fixing plate 15 are positioned outside the hydraulic valve body 11 and the valve seat 1. At this time, the first mounting plate at the bottom of the four sets of connecting plates 16 is... The mounting hole 17 is aligned with the four sets of second mounting holes 18 on the bottom side of the valve seat 1. Then, the second hexagon socket bolt 19 passes through the first mounting hole 17 and the second mounting hole 18 in sequence, which can fix the valve seat 1 in the designated position. At the same time, the connecting plate 16 and the fixing plate 15 can be fixed. The fixing plate 15 and the connecting plate 16 are installed on the outside of the hydraulic valve body 11 and the valve seat 1, which can further fix the hydraulic valve body 11 and the valve seat 1, and prevent the first hexagon socket bolt 14 from loosening, which would affect the connection and sealing of the hydraulic valve body 11 and the valve seat 1.

[0022] For details, see Figures 1 to 3 Sealing mechanism: used for sealing the connection end between valve seat 1 and hydraulic valve body 11. The sealing mechanism includes sealing ring 2 and sealing groove 21. Sealing ring 2 is fixedly installed in the middle of the connection end of valve seat 1. Sealing groove 21 is opened in the middle of the connection end of hydraulic valve body 11. Sealing groove 21 is annular. Sealing ring 2 and sealing groove 21 are movably connected. The dimensions of sealing ring 2 and sealing groove 21 are matched. Sealing ring 22 is detachably installed on the inner side of sealing groove 21.

[0023] During the installation of the hydraulic valve body 11 and the valve seat 1, the sealing ring 2 at the connecting end of the valve seat 1 can be inserted into the annular sealing groove 21 at the connecting end of the hydraulic valve body 11 and press the sealing ring 22, which can effectively seal the connecting end of the valve seat 1 and the hydraulic valve body 11, and prevent leakage of the working medium and intrusion of external dust.

[0024] Further, see Figures 1 to 3 The fixing plate 15 is H-shaped and the connecting plate 16 is L-shaped. The fixing plate 15 and the connecting plate 16 are matched with the dimensions of the hydraulic valve body 11 and the valve seat 1. A rubber pad 24 is bonded to the bottom side of the fixing plate 15 and the rubber pad 24 is attached to the upper surface of the hydraulic valve body 11.

[0025] When the second hex bolt 19 passes through the first mounting hole 17 and the second mounting hole 18 to fix the valve seat 1, the connecting plate 16 and the fixing plate 15, the rubber pad 24 on the bottom side of the fixing plate 15 can press against the upper surface of the hydraulic valve body 11. On the one hand, it can improve the fixing effect of the fixing plate 15 on the hydraulic valve body 11, and on the other hand, it can play a shock absorption effect.

[0026] It is worth noting that, see Figures 1 to 3 Two sets of storage slots 23 are provided on the front and rear sides of the lower surface of the fixing plate 15, and the nuts of the first internal hex bolts 14 are matched with the dimensions of the storage slots 23.

[0027] When the fixing plate 15 presses and fixes the hydraulic valve body 11, the receiving groove 23 opened on the bottom side of the fixing plate 15 can receive the nut of the first internal hex bolt 14 on the upper surface of the hydraulic valve body 11, so as to avoid the nut interfering with the fixing effect of the fixing plate 15 on the hydraulic valve body 11. At the same time, the receiving groove 23 can limit the first internal hex bolt 14 to prevent the first internal hex bolt 14 from loosening.

[0028] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A high-pressure resistant hydraulic valve seat sealing structure, comprising a valve seat (1) and a hydraulic valve body (11), characterized in that, The upper surface of the valve seat (1) is provided with four sets of second fixing holes (13); First fixing mechanism: for fixing the valve seat (1) and the hydraulic valve body (11), the first fixing mechanism includes: four sets of first fixing holes (12), the four sets of first fixing holes (12) are vertically opened through the four corners of the upper surface of the hydraulic valve body (11), the hydraulic valve body (11) is fixed to the upper surface of the valve seat (1) by first internal hex bolts (14) passing through the first fixing holes (12) and the second fixing holes (13); Second fixing mechanism: used for secondary fixing of valve seat (1) and hydraulic valve body (11). The second fixing mechanism includes a fixing plate (15). Two sets of connecting plates (16) are vertically fixed at both ends of the bottom side of the fixing plate (15). The bottom end of the connecting plate (16) is provided with a first mounting hole (17). The four corners of the bottom side of the valve seat (1) are provided with second mounting holes (18). The bottom end of the connecting plate (16) is fixedly connected to the valve seat (1) through the first mounting hole (17) and the second fixing hole (13) by a second internal hex bolt (19). Sealing mechanism: used for sealing the connection end between valve seat (1) and hydraulic valve body (11), the sealing mechanism includes sealing ring (2) and sealing groove (21), the sealing ring (2) is fixedly installed in the middle of the connection end of valve seat (1), the sealing groove (21) is opened in the middle of the connection end of hydraulic valve body (11), and the sealing ring (2) and sealing groove (21) are movably connected.

2. The high-pressure hydraulic valve seat sealing structure as described in claim 1, characterized in that, The fixing plate (15) is H-shaped, the connecting plate (16) is L-shaped, and the fixing plate (15) and the connecting plate (16) are matched with the dimensions of the hydraulic valve body (11) and the valve seat (1).

3. The high-pressure resistant hydraulic valve seat sealing structure as described in claim 1, characterized in that, The sealing groove (21) is annular, the sealing ring (2) matches the size of the sealing groove (21), and a sealing ring (22) is detachably installed on the inner side of the sealing groove (21).

4. The high-pressure resistant hydraulic valve seat sealing structure as described in claim 1, characterized in that, The fixing plate (15) has two sets of storage slots (23) on both the front and rear sides of its lower surface, and the nuts of the first hexagonal socket bolt (14) are matched with the dimensions of the storage slots (23).

5. The high-pressure hydraulic valve seat sealing structure as described in claim 1, characterized in that, A rubber pad (24) is bonded to the bottom side of the fixing plate (15), and the rubber pad (24) is attached to the upper surface of the hydraulic valve body (11).

6. The high-pressure resistant hydraulic valve seat sealing structure as described in claim 1, characterized in that, The four first fixing holes (12) on the upper surface of the hydraulic valve body (11) correspond one-to-one with the four sets of second fixing holes (13) on the upper surface of the valve seat (1), and the four sets of first mounting holes (17) at the bottom of the connecting plate (16) correspond one-to-one with the four sets of second mounting holes (18) on the bottom side of the valve seat (1).

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