Lubricating oil filling device for valve and valve

Abstract

The utility model relates to a lubricating oil filling device for a valve and the valve, and relates to the technical field of valve lubrication. According to the lubricating oil filling device for the valve, when the valve is lubricated and maintained, the rigid sealing piece which is provided with the penetrating through hole in the thickness direction of the rigid sealing piece is in threaded connection with the first end of the guide connecting pipe, and the rigid sealing piece is rotated to be close to a cavity shell of the valve; the side, facing the first connecting end in the thickness direction, of the rigid sealing piece makes contact with the outer wall of a cavity shell of the valve, so that the sealing performance of connection between the first connecting end and the valve is improved, and the situation that lubricating oil cannot be injected into a gap formed by connection of the first connecting end and the valve is avoided. And then lubricating oil enters the cavity of the valve through the first connecting end of the guide connecting pipe so as to lubricate and maintain parts in the cavity of the valve, the valve does not need to be disassembled, abrasion to the internal structure of the valve is reduced, and the working performance of the valve is ensured.

Description

Technical Field

[0001] This utility model relates to the field of valve lubrication technology, and in particular to a lubricating oil filling device for valves and a valve. Background Technology

[0002] Currently, some valves lack oil injection holes and have insufficient sealing structures for lubrication during use. Lubrication and maintenance of the worm gear inside the valve chamber are typically achieved by disassembling the valve and lubricating its internal structures and components. However, frequent opening and closing over a long period leads to wear on the components within the worm gear chamber, reducing the valve's sealing performance and potentially causing leaks or dripping. This further contributes to corrosion of internal components, ultimately preventing the valve from opening and closing properly and impacting production. Utility Model Content

[0003] This application provides a lubricating oil filling device and a valve for use in valves, which can inject lubricating oil into the worm gear chamber of the valve without disassembling the valve, thereby reducing wear on the internal structure of the valve and ensuring the working performance of the valve.

[0004] In a first aspect, embodiments of this application provide a lubricating oil filling device for a valve, comprising: a guide pipe having a first connecting end and a second connecting end, the first connecting end being used to communicate with the chamber of the valve, and the second connecting end being used to connect with a lubricating oil pipe; and a sealing assembly including a rigid sealing sheet having a through hole extending along its own thickness direction, the rigid sealing sheet being threadedly connected to the first connecting end through the through hole.

[0005] According to the aforementioned embodiments of the first aspect of this application, the sealing assembly further includes a flexible seal, which is disposed on the side of the sealing sheet facing the first connection end, and the flexible seal is annular.

[0006] According to any of the foregoing embodiments of the first aspect of this application, the rigid sealing sheet is provided with an annular groove on the side facing the first connection end, and at least a portion of the flexible sealing element in its own axial direction is accommodated in the annular groove.

[0007] According to any of the foregoing embodiments of the first aspect of this application, there are multiple annular grooves and multiple flexible seals, with the multiple annular grooves spaced apart and coaxially arranged, and the multiple annular grooves and multiple flexible seals corresponding one to one.

[0008] According to any of the foregoing embodiments of the first aspect of this application, a one-way valve is further included, which is connected to the second connection end.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the lubricating oil filling device further includes a detection component configured to detect performance parameters of the lubricating oil in the guide pipe, the performance parameters including at least one of the pressure or flow rate of the lubricating oil in the guide pipe.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the detection component includes a pressure detector connected to a guide pipe for detecting the pressure of lubricating oil inside the guide pipe.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the guide pipe is a three-way guide pipe, which has a first joint, a second joint and a third joint that are interconnected. The first joint is used to connect to the chamber of the valve, the second joint is used to connect to the lubricating oil pipe and the third joint is used to connect to the pressure detector.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the detection component includes a flow detector connected to a guide pipe for detecting the flow rate of lubricating oil within the guide pipe.

[0013] Secondly, embodiments of this application also provide a valve, including a lubricating oil filling device.

[0014] According to an embodiment of this application, a lubricating oil filling device for a valve, when lubricating and maintaining the valve, a rigid sealing plate with a through hole in its thickness direction is threadedly connected to the first end of a guide pipe. The rigid sealing plate is rotated so that it approaches the valve cavity, thereby causing the side of the rigid sealing plate facing the first connection end in the thickness direction to contact the outer wall of the valve cavity. This improves the sealing performance of the connection between the first connection end and the valve, preventing gaps in the connection and ensuring lubricating oil injection. Then, lubricating oil is added to the inside of the guide pipe through the second connection end. The lubricating oil flows from the second connection end to the first connection end and then enters the valve cavity through the first connection end of the guide pipe to lubricate and maintain the components inside the valve cavity. This eliminates the need to disassemble the valve, reducing wear on the internal structure and ensuring valve performance. Attached Figure Description

[0015] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of a lubricating oil filling device for a valve in one embodiment of this application;

[0017] Figure 2 This is a schematic cross-sectional view of a sealing assembly in one embodiment of this application;

[0018] Figure 3This is a schematic diagram of the sealing assembly in one embodiment of this application.

[0019] Figure label:

[0020] 1000-Lubricating oil filling device; 100-Guide pipe; 110-First connecting end; 120-Second connecting end; 200-Sealing assembly; 210-Rigid sealing sheet; 211-Annular groove; 220-Flexible seal; 300-One-way valve. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] In related technologies, some valves do not have a dedicated oil filling hole in the valve cavity. When it is necessary to lubricate and maintain the components inside the valve cavity, the valve needs to be disassembled and the valve cavity opened to remove the components for lubrication and maintenance. This method can easily cause corrosion or damage to the internal components of the valve during disassembly, making the valve unable to open and close normally. On the other hand, frequent valve maintenance can also reduce the valve's sealing performance, leading to leakage or dripping.

[0023] To address the aforementioned issues, this application provides a lubricating oil filling device and a valve for valves, which enables the injection of lubricating oil into valve components without disassembling the valve, thereby reducing wear on the internal structure of the valve and ensuring its operational performance.

[0024] Figure 1 This is a schematic diagram of the structure of a lubricating oil filling device for a valve in one embodiment of this application; Figure 2 This is a schematic cross-sectional view of a sealing assembly in one embodiment of this application; Figure 3 This is a schematic diagram of the sealing assembly in one embodiment of this application. Figure 1-3 As shown, this application embodiment provides a lubricating oil filling device 1000 for a valve M. The lubricating oil filling device 1000 includes a guide pipe 100 and a sealing assembly 200. The guide pipe 100 has a first connecting end 110 and a second connecting end 120. The first connecting end 110 is used to communicate with the chamber of the valve M, and the second connecting end 120 is used to connect with a lubricating oil pipe. The sealing assembly 200 includes a rigid sealing plate 210, which has a through hole extending along its own thickness direction. The rigid sealing plate 210 is threadedly connected to the first connecting end 110 through the through hole.

[0025] It should be noted that the outer peripheral wall of the first connecting end 110 is provided with external threads, and the first connecting end 110 is threadedly connected to the chamber housing of valve M. When it is necessary to inject lubricating oil into the chamber of valve M, the guide pipe 100 is connected to the threaded hole of the chamber of valve M. After the lubricating oil injection is completed, the guide pipe 100 can be removed from the threaded hole of valve M, and then the threaded hole of valve M can be sealed.

[0026] According to the embodiment of this application, the lubricating oil filling device 1000 for valve M, when lubricating and maintaining valve M, a rigid sealing plate 210 with a through hole in its thickness direction is threadedly connected to the first end of the guide pipe 100. The rigid sealing plate 210 is rotated so that it approaches the cavity shell of valve M, thereby making the side of the rigid sealing plate 210 facing the first connecting end 110 in the thickness direction contact the outer wall of the cavity shell of valve M. This improves the sealing performance of the connection between the first connecting end 110 and valve M, preventing gaps in the connection between the first connecting end 110 and valve M that would prevent lubricating oil injection. Then, lubricating oil is added to the inside of the guide pipe 100 through the second connecting end 120. The lubricating oil flows from the second connecting end 120 to the first connecting end 110 and enters the cavity of valve M through the first connecting end 110 of the guide pipe 100 to lubricate and maintain the components inside the cavity of valve M. This eliminates the need to disassemble valve M, reducing wear on the internal structure of valve M and ensuring the working performance of valve M.

[0027] like Figure 1-3 As shown, in some embodiments, the sealing assembly 200 further includes a flexible seal 220, which is disposed on the side of the sealing sheet facing the first connection end 110 and is annular. A flexible gasket is sandwiched between the rigid sealing sheet 210 and the outer wall of the valve M cavity. The rigid sealing sheet 210 and the flexible sealing sheet together provide a sealing effect for the connection between the guide pipe 100 and the valve M, further improving the sealing performance of the sealing assembly 200.

[0028] like Figure 1-3 As shown, in some embodiments, the rigid sealing sheet 210 has an annular groove 211 on the side facing the first connecting end 110. At least a portion of the flexible sealing element 220 in its axial direction is accommodated within the annular groove 211, reducing the gap between the rigid sealing sheet 210 and the flexible sealing element 220 and improving the sealing effect. Simultaneously, accommodating at least a portion of the flexible sealing element 220 in its axial direction within the annular groove 211 prevents it from shifting or falling off during operation, and also makes the installation of the flexible sealing element 220 simpler and faster, improving installation efficiency.

[0029] like Figure 1-3As shown, in some embodiments, there are multiple annular grooves 211 and multiple flexible seals 220. The multiple annular grooves 211 are spaced apart and coaxially arranged. The multiple annular grooves 211 and multiple flexible seals 220 correspond one-to-one. The axial direction of the through hole of the sensitive sealing sheet forms a multi-level seal, which further enhances the sealing effect of the rigid sealing sheet 210 and the flexible seal 220.

[0030] like Figure 1-3 As shown, in some embodiments, a one-way valve 300 is also included, which is connected to the second connection end 120. Since the valve M has working pressure inside under normal conditions, the one-way valve 300 assembly can effectively prevent the lubricating oil injected into the valve M from flowing back due to the working pressure of the valve M itself.

[0031] In some embodiments, the lubricating oil filling device 1000 further includes a detection component configured to detect performance parameters of the lubricating oil within the guide pipe 100, including at least one of pressure or flow rate of the lubricating oil within the guide pipe 100. The detection component can detect the pressure or flow rate of the lubricating oil within the guide pipe 100 in real time to prevent excessive pressure or flow rate from damaging the valve M.

[0032] In some embodiments, the detection component includes a pressure detector connected to the guide pipe 100 for detecting the pressure of the lubricating oil inside the guide pipe 100, so as to avoid excessive pressure of the injected lubricating oil causing damage to other components inside the valve M.

[0033] Optionally, the pressure detector can be a pressure gauge or other pressure sensor, and the pressure detector is detachably connected to the guide tube 100 for easy installation and removal.

[0034] In some embodiments, the guide pipe 100 is a three-way guide pipe 100, which has a first connector, a second connector and a third connector that are interconnected. The first connector is used to connect to the chamber of the valve M, the second connector is used to connect to the lubricating oil pipe and the third connector is used to connect to the pressure detector.

[0035] In some embodiments, the detection component includes a flow detector connected to the guide pipe 100 for detecting the flow rate of lubricating oil within the guide pipe 100, so as to monitor the flow rate of lubricating oil within the guide pipe 100 in real time.

[0036] This application also provides a valve M, which includes the lubricating oil filling device 1000 of any of the foregoing embodiments and has all the beneficial effects of the lubricating oil filling device 1000 of any of the foregoing embodiments, which will not be described in detail here.

[0037] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lubricating oil filling device for valves, characterized in that, include: A guide pipe, having a first connecting end and a second connecting end, the first connecting end being for communication with the valve chamber, and the second connecting end being for connection with a lubricating oil pipe; and A sealing assembly, the sealing assembly including a rigid sealing sheet having a through hole extending along its own thickness direction, the rigid sealing sheet being threadedly connected to the first connecting end through the through hole.

2. The lubricating oil filling device for the valve as described in claim 1, characterized in that, The sealing assembly further includes a flexible seal, which is disposed on the side of the sealing sheet facing the first connection end, and the flexible seal is annular.

3. The lubricating oil filling device for the valve as described in claim 2, characterized in that, The rigid sealing sheet has an annular groove on the side facing the first connection end, and at least a portion of the flexible sealing element in its axial direction is accommodated in the annular groove.

4. The lubricating oil filling device for the valve as described in claim 3, characterized in that, The number of annular grooves and flexible seals are both multiple, with the multiple annular grooves spaced apart and coaxially arranged, and the multiple annular grooves and multiple flexible seals corresponding one-to-one.

5. The lubricating oil filling device for the valve as described in any one of claims 1-4, characterized in that, It also includes a one-way valve, which is connected to the second connection end.

6. The lubricating oil filling device for the valve as described in any one of claims 1-4, characterized in that, The lubricating oil filling device further includes a detection component configured to detect performance parameters of the lubricating oil in the guide pipe, the performance parameters including at least one of the pressure or flow rate of the lubricating oil in the guide pipe.

7. The lubricating oil filling device for the valve as described in claim 6, characterized in that, The detection component includes a pressure detector connected to the guide pipe for detecting the pressure of the lubricating oil inside the guide pipe.

8. The lubricating oil filling device for the valve as described in claim 7, characterized in that, The guide pipe is a three-way guide pipe, which has a first joint, a second joint and a third joint that are interconnected. The first joint is used to connect to the valve chamber, the second joint is used to connect to the lubricating oil pipe, and the third joint is used to connect to the pressure detector.

9. The lubricating oil filling device for the valve as described in claim 6, characterized in that, The detection component includes a flow detector connected to the guide pipe for detecting the flow rate of lubricating oil within the guide pipe.

10. A valve, characterized in that, Includes a lubricating oil filling device as described in any one of claims 1-9.

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