A hydraulic valve

Abstract

The present invention relates to the technical field of hydraulic valves, and in particular to a hydraulic valve, comprising a detachable cover plate, a valve body that passes through left and right, and a transition cylinder fixedly connected to the valve body by sealing bolts. The detachable cover plate designed in the present invention is installed inside a clamping groove by means of connecting protrusions and fastening bolts that cooperate with each other. Therefore, when a fault occurs inside the hydraulic valve, the cover plate can be opened to inspect the inside. When a valve stem inside the hydraulic valve is damaged, a fixed block rotatably connected to the valve stem is taken out, and then a new fixed block with the valve stem is clamped inside a placement groove. When a sealing disc inside the hydraulic valve is damaged, all connecting bolts are removed, and then the damaged sealing disc is removed and replaced with a new sealing disc. Therefore, when parts inside the hydraulic valve are damaged, the parts can be replaced and maintained, thereby reducing the unnecessary replacement of the entire hydraulic valve and improving the comprehensive utilization rate of the hydraulic valve.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic valves, and in particular to a hydraulic valve. Background Art

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressure oil of a pressure regulating valve and is usually used in combination with an electromagnetic pressure regulating valve. It can be used to remotely control the on / off of the oil, gas, and water pipeline systems of a hydropower station.

[0003] Since the hydraulic valve is subjected to greater force in the oil and water pipelines, the valve stem and other components in the hydraulic valve are prone to wear under the impact of the fluid. In severe cases, the internal components of the hydraulic valve may be damaged, and the hydraulic valve may become unusable due to damage to the components. In the traditional use process, the entire hydraulic valve needs to be replaced, resulting in an increase in pipeline costs and a low overall utilization rate of the hydraulic valve.

[0004] Due to the corrosion of water, oil and other fluids during long-term use of hydraulic valves, the valve body and internal parts are mostly severely corroded. At this time, the hydraulic valve needs to be replaced. During the traditional hydraulic valve replacement process, water, oil, etc. in the external pipes connected to the hydraulic valve may overflow from the external pipes, thereby causing waste of water and oil. At the same time, the overflowed water and oil will cause pollution to the pipe connections, affecting the subsequent installation effect of the new hydraulic valve. Summary of the invention

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: a hydraulic valve, comprising a valve body that passes through from left to right, wherein transition cylinders that pass through the valve body are installed on the front and rear sides of the valve body through sealing bolts, a clamping groove is opened on the upper side of the middle part of the valve body, and an arc-shaped cover plate is arranged inside the clamping groove, and corresponding connecting protrusions are arranged between the front and rear sides of the upper end face of the cover plate and the outer surface of the valve body, and the upper and lower adjacent connecting protrusions are fixed by fastening bolts.

[0006] The clamping groove is provided with placement grooves on both the front and rear sides, and fixed blocks are clamped inside the placement grooves. A valve stem is installed between the two fixed blocks through bearings. The rear end of the valve stem passes through the corresponding fixed block, and a rectangular protrusion is installed on the rear end surface of the valve stem. A linkage rod that runs through the valve body is installed on the rear side of the placement groove at the rear of the valve body through a bearing, and a clamping groove that cooperates with the rectangular protrusion is provided at the front end of the linkage rod.

[0007] The valve stem is provided with a connecting groove which runs through from top to bottom, a sealing disc is clamped inside the connecting groove, and a plurality of connecting bolts which are evenly distributed from front to back and are used to fix the sealing disc are installed on the valve stem through threads.

[0008] Preferably, an adjusting frame is commonly installed on the front end surfaces of the two transition cylinders, a supporting protrusion is provided on the front side of the middle part of the upper end surface of the adjusting frame, a rotating shaft is installed on the supporting protrusion through a bearing, and an adjusting shaft is installed on the front end surfaces of the two transition cylinders through bearings, a barrier disc for sealing the transition cylinder is installed on the part of the adjusting shaft located inside the transition cylinder, pulleys are installed on the rotating shaft and the two adjusting shafts, and a belt is commonly installed between the pulleys on the same side.

[0009] Preferably, a limit gear is installed on the rotating shaft and located in front of the pulley, a rack plate meshing with the limit gear is slidably provided on the upper end surface of the adjusting frame, a locking protrusion is provided on the right side of the upper end surface of the adjusting frame, a locking rod extending forward and backward is slidably provided on the locking protrusion, and a locking through hole matching the locking rod is provided on the rack plate.

[0010] Preferably, an annular sealing ring is threadedly mounted on the circumferential surface of the transition cylinder away from the valve body, an annular protrusion is provided on the side of the transition cylinder close to the valve body, and an annular groove matching the annular protrusion is provided on the side of the valve body in contact with the transition cylinder.

[0011] Preferably, sealing grooves are provided on the front and rear sides and the left and right sides of the snap-in groove, and a sealing protrusion matching the sealing groove is provided on the cover plate. The sealing groove and the sealing protrusion cooperate with each other to prevent the fluid from flowing out of the gap between the valve body and the cover plate, thereby improving the airtightness between the valve body and the cover plate.

[0012] Preferably, the sealing grooves on the front and rear sides of the clamping groove are respectively located outside the front and rear placement grooves, thereby improving the airtightness between the valve body and the cover plate and preventing the fluid from flowing out of the placement groove.

[0013] Preferably, the left end face of the sealing disc is provided with front-to-back symmetrical traction protrusions, which can provide a gripping position for the staff when replacing the valve stem and the sealing disc. The staff can remove the valve stem and the sealing disc by pulling the traction protrusions, providing convenience for the staff.

[0014] Preferably, an annular sealing gasket is installed on the circumferential surface of the sealing disc to improve the fit between the sealing disc and the inner wall of the valve body and prevent the fluid from flowing out from between the sealing disc and the inner wall of the valve body when the sealing disc is in a vertical direction.

[0015] The beneficial effects of the present invention are as follows: 1. The detachable cover plate designed in the present invention is installed inside the clamping groove by means of connecting protrusions and fastening bolts that cooperate with each other. Therefore, when a fault occurs inside the hydraulic valve, the cover plate can be opened to inspect the inside. When the valve stem inside the hydraulic valve is damaged, the fixed block rotatably connected to the valve stem is taken out, and then a new fixed block with the valve stem is clamped inside the placement groove. When the sealing disc inside the hydraulic valve is damaged, all the connecting bolts are removed and then the damaged sealing disc is removed and replaced with a new sealing disc. Therefore, when the internal parts of the hydraulic valve are damaged, the parts can be replaced and maintained, reducing the unnecessary replacement of the entire hydraulic valve and improving the comprehensive utilization rate of the hydraulic valve.

[0016] 2. Regardless of whether it is replacing the hydraulic valve or replacing the parts inside the hydraulic valve, in the adjustment frame designed by the present invention, the rotating shaft is turned to drive the adjusting shaft to rotate through the cooperation of the pulley and the belt. During the rotation of the adjusting shaft, the blocking disc is driven to rotate, and then the blocking disc can limit the flow of the fluid in the external pipeline, avoid the overflow of the fluid in the external pipeline and cause contamination of the pipeline connection, thereby improving the subsequent maintenance and replacement effect of the hydraulic valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the three-dimensional installation structure of the present invention.

[0019] Figure 2 The present invention Figure 1 main view.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention excluding the valve body, the transition cylinder and the internal parts of the above two.

[0021] Figure 4 It is a schematic diagram of the valve body and its internal three-dimensional structure of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional installation structure between the internal components of the valve body of the present invention.

[0023] Figure 6 The present invention Figure 4 Top view of the .

[0024] Figure 7 The present invention Figure 6 A partial enlarged view of point A.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the transition cylinder of the present invention.

[0026] Fig. 9Schematic diagram of the cover structure of the present invention (viewed from left to right).

[0027] In the figure: 1. valve body; 11. snap-fit ​​groove; 111. sealing groove; 112. sealing protrusion; 12. placement groove; 13. fixing block; 14. valve stem; 141. rectangular protrusion; 15. linkage rod; 16. sealing disc; 161. traction protrusion; 162. annular sealing gasket; 17. connecting bolt; 2. sealing bolt; 3. transition cylinder; 31. adjusting frame; 32. supporting protrusion; 33. rotating shaft; 34. adjusting shaft; 35. blocking disc; 36. pulley; 37. belt; 38. limiting gear; 39. rack plate; 391. locking through hole; 30. locking protrusion; 301. locking rod; 310. annular sealing ring; 311. annular protrusion; 312. annular groove; 4. cover plate; 41. connecting protrusion; 42. fastening bolt. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0029] See also Figure 1 as well as Figure 4 A hydraulic valve comprises a valve body 1 which is connected from left to right. A transition cylinder 3 which is connected to the valve body 1 is installed on the front and rear sides of the valve body 1 through sealing bolts 2. A clamping groove 11 is provided on the upper side of the middle part of the valve body 1. A cover plate 4 with an arc structure is arranged inside the clamping groove 11. Connecting protrusions 41 corresponding to each other are arranged between the front and rear sides of the upper end face of the cover plate 4 and the outer surface of the valve body 1. The upper and lower adjacent connecting protrusions 41 are fixed by fastening bolts 42.

[0030] See also Figure 6 as well as Fig. 9 The front and rear sides and the left and right sides of the clamping groove 11 are both provided with sealing grooves 111, and the cover plate 4 is provided with a sealing protrusion 112 that matches the sealing groove 111. The sealing groove 111 and the sealing protrusion 112 cooperate with each other to prevent the fluid from flowing out of the gap between the valve body 1 and the cover plate 4, thereby improving the airtightness between the valve body 1 and the cover plate 4.

[0031] See also Figure 6 The sealing grooves 111 on the front and rear sides of the clamping groove 11 are respectively located outside the front and rear placement grooves 12, thereby improving the airtightness between the valve body 1 and the cover plate 4 and preventing the fluid from flowing out of the placement groove 12.

[0032] See also Figure 4 , Figure 5 , Figure 6 as well as Figure 7The clamping groove 11 is provided with a placement groove 12 on both the front and rear sides, and a fixing block 13 is clamped inside the placement groove 12. A valve stem 14 is installed between the two fixing blocks 13 through a bearing. The rear end of the valve stem 14 passes through the corresponding fixing block 13, and a rectangular protrusion 141 is installed on the rear end surface of the valve stem 14. The valve body 1 is provided with a linkage rod 15 that runs through the valve body 1 through a bearing on the rear side of the placement groove 12 located at the rear, and a clamping groove that cooperates with the rectangular protrusion 141 is provided at the front end of the linkage rod 15.

[0033] See also Figure 5 The valve stem 14 is provided with a connecting groove which runs through from top to bottom, and a sealing disc 16 is clamped inside the connecting groove. A plurality of connecting bolts 17 which are evenly distributed from front to back and are used to fix the sealing disc 16 are installed on the valve stem 14 through threads.

[0034] See also Figure 5 The left end face of the sealing disc 16 is provided with a front-to-back symmetrical traction protrusion 161. When the valve stem 14 and the sealing disc 16 are replaced, the traction protrusion 161 can provide a gripping position for the staff. The staff can remove the valve stem 14 and the sealing disc 16 by pulling the traction protrusion 161, which provides convenience for the staff.

[0035] Continue reading Figure 5 An annular sealing gasket 162 is installed on the circumferential surface of the sealing disc 16 to improve the fit between the sealing disc 16 and the inner wall of the valve body 1 and prevent the fluid from flowing out from between the sealing disc 16 and the inner wall of the valve body 1 when the sealing disc 16 is in a vertical direction.

[0036] See also Figure 1 , Figure 2 as well as Figure 3 The front end surfaces of the two transition cylinders 3 are jointly equipped with an adjusting frame 31, a supporting protrusion 32 is provided on the front side of the middle part of the upper end surface of the adjusting frame 31, a rotating shaft 33 is installed on the supporting protrusion 32 through a bearing, and an adjusting shaft 34 is installed on the front end surfaces of the two transition cylinders 3 through a bearing, and a blocking disc 35 for sealing the transition cylinder 3 is installed on the part of the adjusting shaft 34 located inside the transition cylinder 3, and pulleys 36 are installed on the rotating shaft 33 and the two adjusting shafts 34, and a belt 37 is installed between the pulleys 36 on the same side.

[0037] See also Figure 3 A limit gear 38 is installed on the rotating shaft 33 and in front of the pulley 36. A rack plate 39 meshing with the limit gear 38 is slidably provided on the upper end surface of the adjusting frame 31. A locking protrusion 30 is provided on the right side of the upper end surface of the adjusting frame 31. A locking rod 301 extending forward and backward is slidably provided on the locking protrusion 30. A locking through hole 391 matching the locking rod 301 is opened on the rack plate 39.

[0038] See also Figure 4 as well as Figure 8 An annular sealing ring 310 is threadedly installed on the circumferential surface of the transition cylinder 3 away from the valve body 1, an annular protrusion 311 is arranged on the side of the transition cylinder 3 close to the valve body 1, and an annular groove 312 matching the annular protrusion 311 is provided on the side of the valve body 1 in contact with the transition cylinder 3.

[0039] During specific operation, the transition cylinder 3 with the valve body 1 is aligned with the external pipeline to be connected, and the annular sealing ring 310 is screwed to connect the transition cylinder 3 and the external pipeline through the annular sealing ring 310, wherein the linkage rod 15 is connected to the hydraulic system of the hydraulic valve (not shown in the figure), and the hydraulic valve can work.

[0040] When the hydraulic valve fails, the rotating shaft 33 is turned to drive the adjusting shaft 34 to rotate through the pulley 36 and the belt 37. During the rotation of the adjusting shaft 34, the blocking disc 35 is driven to rotate from the horizontal direction to the vertical direction. The locking hole 391 and the locking rod 301 are located on the same axis. The locking rod 301 is then pushed backward to the inside of the locking hole 391. The locking rod 301 can lock and limit the rack plate 39, and then the blocking disc 35 can limit the flow of the fluid in the external pipeline, thereby avoiding the overflow of the fluid in the external pipeline and causing pollution at the pipeline connection, thereby improving the subsequent maintenance and replacement effects of the hydraulic valve.

[0041] When the flow limitation of the fluid in the external pipeline ends, unscrew the fastening bolts 42, open the cover plate 4 to inspect the inside of the valve body 1. When the valve stem 14 inside the hydraulic valve is damaged, take out the fixing block 13 rotatably connected to the valve stem 14, and then clamp the new fixing block 13 with the valve stem 14 in the placement groove 12. When the sealing disc 16 inside the hydraulic valve is damaged, all the connecting bolts 17 are removed, and then the damaged sealing disc 16 is removed and replaced with a new sealing disc 16, and then the sealing disc 16 and the valve stem 14 are fixedly connected to each other through the connecting bolts 17, and finally the cover plate 4 is installed in the clamping groove 11 through the cooperation of the connecting protrusion 41 and the fastening bolts 42. Therefore, when the internal parts of the hydraulic valve are damaged, the parts can be replaced and maintained, reducing the unnecessary replacement of the entire hydraulic valve and improving the comprehensive utilization rate of the hydraulic valve.

[0042] When the hydraulic valve is severely corroded as a whole and no maintenance is necessary, the sealing bolts 2 are unscrewed, the valve body 1 and its internal parts are removed as a whole, and the valve body 1 and its internal parts are replaced as a whole.

[0043] The above-mentioned new hydraulic valve comprises the following steps during use: Step 1, installation: align the transition cylinder 3 with the valve body 1 with the external pipeline to be connected, screw the annular sealing ring 310, and connect the transition cylinder 3 and the external pipeline through the annular sealing ring 310.

[0044] Step 2: flow limiting treatment: when the hydraulic valve fails, the rotating shaft 33 is turned to drive the adjusting shaft 34 to rotate through the pulley 36 and the belt 37. During the rotation of the adjusting shaft 34, the blocking disc 35 is driven to rotate from the horizontal direction to the vertical direction. The locking through hole 391 and the locking rod 301 are located on the same axis. Then the locking rod 301 is pushed backward to the inside of the locking through hole 391. The locking rod 301 can lock and limit the rack plate 39, and then the blocking disc 35 can limit the flow of the fluid in the external pipeline.

[0045] Step 3, repair and replacement: after the flow restriction of the fluid in the external pipeline ends, unscrew the fastening bolts 42, open the cover plate 4 to inspect the inside of the valve body 1, when the valve stem 14 inside the hydraulic valve is damaged, remove the fixing block 13 rotatably connected to the valve stem 14, and then clamp the new fixing block 13 with the valve stem 14 inside the placement groove 12, when the sealing disc 16 inside the hydraulic valve is damaged, remove all the connecting bolts 17 and then remove the damaged sealing disc 16 and replace it with a new sealing disc 16, and then fix the sealing disc 16 and the valve stem 14 to each other through the connecting bolts 17, and finally install the cover plate 4 inside the clamping groove 11 through the connection protrusion 41 and the fastening bolts 42. When the hydraulic valve is severely corroded as a whole and there is no need for maintenance, unscrew the sealing bolts 2, remove the valve body 1 and its internal parts as a whole, and replace the valve body 1 and its internal parts as a whole.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydraulic valve, comprising a valve body (1) that is connected to the left and right sides, characterized in that: The valve body (1) is provided with a transition cylinder (3) intersecting the valve body (1) on both the front and rear sides via sealing bolts (2), a clamping groove (11) is provided on the upper side of the middle part of the valve body (1), a cover plate (4) with an arc structure is provided inside the clamping groove (11), and corresponding connecting protrusions (41) are provided between the front and rear sides of the upper end face of the cover plate (4) and the outer surface of the valve body (1), and the upper and lower adjacent connecting protrusions (41) are fixed by fastening bolts (42), wherein; The described clamping groove (11) is provided with a placement groove (12) on both the front and rear sides, and a fixing block (13) is clamped inside the placement groove (12). A valve stem (14) is installed between the two fixing blocks (13) via a bearing, and the rear end of the valve stem (14) passes through the corresponding fixing block (13), and a rectangular protrusion (141) is installed on the rear end surface of the valve stem (14). The valve body (1) is provided with a linkage rod (15) penetrating the valve body (1) via a bearing on the rear side of the placement groove (12) located at the rear, and a clamping groove that cooperates with the rectangular protrusion (141) is provided at the front end of the linkage rod (15); The valve stem (14) is provided with a connecting groove which passes through from top to bottom, and a sealing disc (16) is clamped inside the connecting groove. A plurality of connecting bolts (17) which are evenly distributed from front to back and are used to fix the sealing disc (16) are installed on the valve stem (14) through threads.

2. A hydraulic valve according to claim 1, characterized in that: The front end surfaces of the two transition cylinders (3) are jointly equipped with an adjusting frame (31); a supporting protrusion (32) is arranged at the front side of the middle part of the upper end surface of the adjusting frame (31); a rotating shaft (33) is installed on the supporting protrusion (32) through a bearing; the front end surfaces of the two transition cylinders (3) are jointly equipped with adjusting shafts (34) through bearings; the part of the adjusting shaft (34) located inside the transition cylinder (3) is equipped with a blocking disc (35) for sealing the transition cylinder (3); pulleys (36) are installed on the rotating shaft (33) and the two adjusting shafts (34); and a belt (37) is jointly installed between the pulleys (36) on the same side.

3. A hydraulic valve according to claim 2, characterized in that: A limit gear (38) is installed on the rotating shaft (33) and located in front of the pulley (36); a rack plate (39) meshing with the limit gear (38) is slidably arranged on the upper end surface of the adjusting frame (31); a locking protrusion (30) is arranged on the right side of the upper end surface of the adjusting frame (31); a locking rod (301) extending forward and backward is slidably arranged on the locking protrusion (30); and a locking through hole (391) matching with the locking rod (301) is opened on the rack plate (39).

4. A hydraulic valve according to claim 1, characterized in that: An annular sealing ring (310) is installed via a thread on the circumferential surface of the transition cylinder (3) away from the valve body (1), an annular protrusion (311) is provided on the side of the transition cylinder (3) close to the valve body (1), and an annular groove (312) matching the annular protrusion (311) is provided on the side of the valve body (1) in contact with the transition cylinder (3).

5. A hydraulic valve according to claim 1, characterized in that: The clamping groove (11) is provided with sealing grooves (111) on both the front and rear sides and the left and right sides, and the cover plate (4) is provided with sealing protrusions (112) matching with the sealing grooves (111).

6. A hydraulic valve according to claim 5, characterized in that: The sealing grooves (111) on the front and rear sides of the clamping groove (11) are respectively located outside the front and rear placement grooves (12).

7. A hydraulic valve according to claim 1, characterized in that: The left end surface of the sealing disc (16) is provided with a front-to-back symmetrical traction protrusion (161).

8. A hydraulic valve according to claim 1, characterized in that: An annular sealing gasket (162) is installed on the circumferential surface of the sealing disc (16).

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