Combined oil supplementing valve

Abstract

The utility model discloses a combined oil supplementing valve which comprises a valve body, a controller is installed at the rear end of the valve body, an oil inlet and an oil outlet are formed in the upper end and the lower end of the valve body respectively, the front end of the valve body is connected with a connecting pipe, the front end of the connecting pipe is connected with a shell, the front end of the shell is connected with a sealing cover, and the sealing cover is connected with the valve body. And a buffer module is mounted in the middle of the sealing cover, and is matched with the inner wall of the shell to buffer the excessive pressure of fluid in the valve body. According to the combined oil supplementing valve, through the arrangement of the buffer module, the suddenly-increased pressure is buffered, the connecting position of the flange is not prone to leakage, disassembly for replacement and maintenance is convenient, and meanwhile combined connection is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of oil replenishing valves, in particular to a combined oil replenishing valve. Background Art

[0002] The oil replenishment valve is usually used in hydraulic systems. Its main function is to replenish the oil in the system to ensure the normal operation of the system. The structure of the oil replenishment valve is usually simple, mainly composed of valve body, valve core, spring and other components. Among them, the valve body is the main shell of the oil replenishment valve, the valve core is the key component to control the flow of oil, and the spring is used to provide the reset force of the valve core. It has the advantages of simple structure, high reliability and long service life, and effectively protects the safe operation of the hydraulic system.

[0003] In the patent application with authorization publication number CN213954030U and authorization publication date 2021-08-13, entitled "A combined compact oil replenishing valve", the metering pump is connected to the oil delivery end and the oil inlet end of the entire valve body through a flange. The entire combination is compact and easy to use, and the metering pump can measure and control the flow of oil passing through the oil inlet, which is convenient for more precise control of the oil input. The pressure plate and the sealing plug are connected by a snap-fit ​​action. The snap-fit ​​structure is simple, easy to disassemble later, and convenient for internal maintenance. However, when the valve body does not have a pressure buffer, when the pressure inside the valve body increases sharply, it is easy to cause leakage at the connection of the flange, affecting the use effect.

[0004] Therefore, we propose a combined oil replenishing valve to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved by the utility model:

[0006] The purpose of the utility model is to provide a combined oil replenishing valve to solve the problems in the current market raised by the above background technology.

[0007] 2. Technical solution:

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined oil replenishing valve, comprising a valve body, a controller is installed at the rear end of the valve body, and an oil inlet and an oil outlet are respectively provided at the upper and lower ends of the valve body, and a connecting pipe is connected to the front end of the valve body, and a shell is connected to the front end of the connecting pipe, and a closing cover is connected to the front end of the shell, and a buffer module is installed in the middle of the closing cover, and the buffer module achieves buffering of the increased pressure of the fluid inside the valve body by cooperating with the inner wall of the shell.

[0009] Furthermore, an internally threaded tube and an externally threaded tube are respectively fixed to the front and rear ends of the shell, and the internally threaded tube is threadedly sleeved on the outside of the connecting tube, and the externally threaded tube is threadedly sleeved on the inside of the closing cover, and sealing gaskets are provided between the internally threaded tube and the connecting tube and between the externally threaded tube and the closing cover.

[0010] Through the above technical solution, threaded connection can be used to facilitate installation and disassembly of the connecting pipe, shell and closing cover.

[0011] Furthermore, the buffer module includes a driving rod installed in the middle of the closing cover through a sealed bearing, a sleeve is threadedly sleeved on the outer rear end of the driving rod, and a piston plate is sleeved on the rear end of the sleeve, and the piston plate is attached to the inner wall of the shell.

[0012] Through the above technical solution, the increased pressure inside the valve body can be buffered under the action of the piston plate.

[0013] Furthermore, the front end side wall of the sleeve is fitted with a limit plate, and the limit plate is fixedly installed at the rear end of the closing cover, and the front end of the driving rod is connected with a rotating block, and the rotating block is located at the front end of the closing cover.

[0014] Through the above technical solution, when the driving rod is rotated, the sleeve can be driven to move under the action of the limiting plate.

[0015] Furthermore, the diameter of the piston plate is smaller than the inner diameter of the external threaded tube.

[0016] The above technical solution makes it easy to remove the piston plate from the inside of the housing.

[0017] Furthermore, the piston plate and the sleeve form a front-to-back sliding structure, and a pressure spring is connected between the piston plate and the sleeve.

[0018] Through the above technical solution, the pressure is buffered under the action of the pressure spring.

[0019] 3. Beneficial effects:

[0020] By adopting the technical solution provided by the utility model, compared with the prior art, the utility model combined oil replenishing valve provides a buffer for the sudden increase in pressure through the setting of the buffer module, the flange connection is not easy to leak, and it is easy to disassemble for replacement and maintenance, and it is also easy to combine and connect. The specific contents are as follows:

[0021] When the valve body is opened, the pressure of the fluid inside the valve body increases sharply, and the pressure is transmitted to the pressure spring through the piston plate. The pressure spring contracts under pressure, which can move the piston plate forward. After the piston plate moves forward, it can increase the fluid storage space, which can provide a buffer for the sudden increase in pressure, and the flange connection is not easy to leak;

[0022] When the driving rod is rotated, the sleeve threadedly mounted on the rear end of the driving rod can move forward and backward under the action of the limit plate, thereby adjusting the distance between the sleeve and the piston plate, adjusting the elastic force of the pressure spring, and thus controlling the buffering force of the piston plate on the increased pressure inside the valve body;

[0023] When it is necessary to replace components such as the piston plate, since the internal threaded tube installed at the rear end of the shell and the connecting tube are threadedly connected, and the external threaded tube installed at the front end of the shell and the closing cover are threadedly connected, the shell and the closing cover can be disassembled for replacement and maintenance, and then the connecting tube, shell and closing cover can be combined using threaded connections. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall side-view stereoscopic structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the side section of the shell of the utility model;

[0026] Figure 3 This is a schematic diagram of the explosion structure of the buffer module of the utility model;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the buffer module of the utility model from a side view.

[0028] In the figure: 1. valve body; 2. controller; 3. oil inlet; 4. oil outlet; 5. connecting pipe; 6. housing; 61. internal threaded pipe; 62. external threaded pipe; 7. closing cover; 8. sealing gasket; 9. buffer module; 91. driving rod; 92. sleeve; 93. limit plate; 94. piston plate; 95. pressure spring. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0033] See also Figure 1-4 A combined oil replenishing valve comprises a valve body 1, a controller 2 is installed at the rear end of the valve body 1, and an oil inlet 3 and an oil outlet 4 are respectively opened at the upper and lower ends of the valve body 1, and a connecting pipe 5 is connected to the front end of the valve body 1, and a housing 6 is connected to the front end of the connecting pipe 5, and a closing cover 7 is connected to the front end of the housing 6, and a buffer module 9 is installed in the middle of the closing cover 7, and the buffer module 9 is matched with the inner wall of the housing 6 to achieve buffering of the increased pressure of the fluid inside the valve body 1; the buffer module 9 comprises a driving rod 91 installed in the middle of the closing cover 7 through a sealed bearing, and the driving rod 91 is connected to the inner wall of the closing cover 7 through a sealed bearing. The outer thread sleeve of the rear end of the moving rod 91 is provided with a sleeve 92, and the rear end of the sleeve 92 is provided with a piston plate 94, and the piston plate 94 is fitted to the inner wall of the housing 6; the front end side wall of the sleeve 92 is fitted with a limit plate 93, and the limit plate 93 is fixedly installed at the rear end of the closing cover 7, and the front end of the driving rod 91 is connected with a rotating block, and the rotating block is located at the front end of the closing cover 7; the diameter of the piston plate 94 is smaller than the inner diameter of the external threaded tube 62; the piston plate 94 and the sleeve 92 form a front-to-back fitting sliding structure, and a pressure spring 95 is connected between the piston plate 94 and the sleeve 92;

[0034] Combination Figure 1-4 As shown, when the valve body 1 is opened and the pressure of the fluid inside the valve body 1 increases sharply, the pressure is transmitted to the pressure spring 95 through the piston plate 94. The pressure spring 95 contracts under pressure, which can make the piston plate 94 move forward. After the piston plate 94 moves forward, the fluid storage space can be increased, which can provide a buffer for the suddenly increased pressure. The flange connection is not easy to leak. When the driving rod 91 is rotated, the sleeve 92 threadedly sleeved on the rear end of the driving rod 91 can move forward and backward under the action of the limit plate 93, and then the distance between the piston plate 94 and the elastic force of the pressure spring 95 can be adjusted, so as to control the buffering force of the piston plate 94 on the increased pressure inside the valve body 1.

[0035] An internal threaded tube 61 and an external threaded tube 62 are fixed to the front and rear ends of the housing 6, respectively. The internal threaded tube 61 is threadedly sleeved on the outside of the connecting tube 5, and the external threaded tube 62 is threadedly sleeved inside the closing cover 7. A sealing gasket 8 is provided between the internal threaded tube 61 and the connecting tube 5 and between the external threaded tube 62 and the closing cover 7.

[0036] Combination Figure 1-3 As shown, when the piston plate 94 and other components need to be replaced, since the internal threaded tube 61 installed at the rear end of the shell 6 is threadedly connected to the connecting tube 5, and the external threaded tube 62 installed at the front end of the shell 6 is threadedly connected to the closing cover 7, the shell 6 and the closing cover 7 can be disassembled for replacement and maintenance, and then the connecting tube 5, the shell 6 and the closing cover 7 are combined by threaded connection.

[0037] Working principle: When using this combined oil supply valve, Figure 1-4 As shown, after the valve body 1 is opened, when the pressure of the fluid inside the valve body 1 increases sharply, the pressure is transmitted to the pressure spring 95 through the piston plate 94. The pressure spring 95 contracts under pressure, which can make the piston plate 94 move forward. After the piston plate 94 moves forward, the fluid storage space can be increased, which can provide a buffer for the suddenly increased pressure. The flange connection is not easy to leak. When the drive rod 91 is rotated, the distance between the sleeve 92 and the piston plate 94 is adjusted, and the elastic force of the pressure spring 95 is adjusted, so as to control the buffering force of the piston plate 94 on the increased pressure inside the valve body 1. The threaded connection between the connecting pipe 5, the shell 6 and the closing cover 7 is utilized to facilitate the combined installation of the connecting pipe 5, the shell 6 and the closing cover 7.

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined oil supply valve, characterized in that: The invention comprises a valve body (1), a controller (2) being installed at the rear end of the valve body (1), an oil inlet (3) and an oil outlet (4) being respectively provided at the upper and lower ends of the valve body (1), and a connecting pipe (5) being connected to the front end of the valve body (1), the front end of the connecting pipe (5) being connected to a housing (6), the front end of the housing (6) being connected to a closing cover (7), and a buffer module (9) being installed in the middle of the closing cover (7), the buffer module (9) being able to buffer the increased pressure of the fluid inside the valve body (1) by cooperating with the inner wall of the housing (6).

2. A combined oil supply valve according to claim 1, characterized in that: An internally threaded tube (61) and an externally threaded tube (62) are fixed to the front and rear ends of the housing (6), respectively; the internally threaded tube (61) is threadedly sleeved on the outside of the connecting tube (5), and the externally threaded tube (62) is threadedly sleeved on the inside of the closing cover (7); and sealing gaskets (8) are provided between the internally threaded tube (61) and the connecting tube (5) and between the externally threaded tube (62) and the closing cover (7).

3. A combined oil supply valve according to claim 1, characterized in that: The buffer module (9) comprises a driving rod (91) mounted on the middle part of the closing cover (7) via a sealed bearing, a sleeve (92) being threadedly sleeved on the outer side of the rear end of the driving rod (91), and a piston plate (94) being sleeved on the rear end of the sleeve (92), and the piston plate (94) being fitted to the inner wall of the housing (6).

4. A combined oil supply valve according to claim 3, characterized in that: The front end side wall of the sleeve (92) is fitted with a limit plate (93), and the limit plate (93) is fixedly mounted on the rear end of the closing cover (7), and the front end of the driving rod (91) is connected to a rotating block, and the rotating block is located at the front end of the closing cover (7).

5. The combined oil supply valve according to claim 3, characterized in that: The diameter of the piston plate (94) is smaller than the inner diameter of the externally threaded tube (62).

6. The combined oil supply valve according to claim 3, characterized in that: The piston plate (94) and the sleeve (92) form a front-to-back sliding structure, and a pressure spring (95) is connected between the piston plate (94) and the sleeve (92).

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