A leak-proof hydraulic valve

Abstract

The utility model provides a kind of hydraulic valve of anti-leakage belongs to hydraulic control technical field, including pipeline assembly, including valve body, fixedly connected in the filler block of the valve body side wall, fixedly connected in the fixed block of the filler block side wall, and fixedly connected in the valve stem of the fixed block side wall, the valve stem is movably inserted in the valve body end portion;Sealing assembly, including fixedly connected in the valve body side wall's shell, rotationally installed in the gland of the valve stem side wall.The utility model has the beneficial effects that: through the sealing structure of cooperation use of dynamic ring seat and static ring seat, dynamic sealing surface adheres pressure stability, static sealing pad compression rate drops, solve the hydraulic valve leakage problem, avoid hydraulic oil waste and environmental pollution;Dynamic ring seat, static ring seat, sealing pad replacement need not to disassemble valve body main body, just need to loosen gland and locking ring, replacement time is shortened, compared with traditional hydraulic valve maintenance efficiency improves.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic control technology, and specifically relates to a leak-proof hydraulic valve. Background Technology

[0002] Hydraulic valves are the core control components in hydraulic systems that control the direction, pressure, and flow rate of hydraulic oil. They are equivalent to switches in hydraulic systems, enabling actions such as starting, stopping, speed regulation, and direction switching of the hydraulic system by regulating the hydraulic oil.

[0003] As the "flow control core" of a hydraulic system, the sealing performance of a hydraulic valve directly determines the system's operating efficiency and environmental friendliness. Traditional hydraulic valves have the following core defects in practical applications: traditional seals have poor oil and temperature resistance, resulting in short lifespans under long-term immersion in hydraulic oil, requiring frequent replacements and high maintenance costs; the connection between the valve stem and valve body often uses a single sealing ring, which wears and ages over time, leading to increased leakage, which not only increases operating costs but also pollutes the environment. Utility Model Content

[0004] The purpose of this invention is to provide a leak-proof hydraulic valve, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A leak-proof hydraulic valve, comprising, A pipeline assembly includes a valve body, a filler block fixedly connected to the side wall of the valve body, a fixing block fixedly connected to the side wall of the filler block, and a valve stem fixedly connected to the side wall of the fixing block. The valve stem is movably inserted into the end of the valve body, and a valve core is fixedly connected to the end of the valve stem. The side wall of the valve core is in sliding contact with the inner wall of the valve body. The sealing assembly includes a housing fixedly connected to the side wall of the valve body, a gland rotatably mounted on the side wall of the valve stem, a spring seat fixedly connected to the side wall of the gland, a spring fixedly connected to the side wall of the spring seat, a push ring sleeved on the side wall of the spring, a moving ring seat snapped into the side wall of the push ring, and a stationary ring seat inserted into the side wall of the moving ring seat, wherein the valve stem is inserted into the center of the housing.

[0006] As a preferred embodiment of this utility model, a water inlet pipe is fixedly connected to the side wall of the valve body, and the water inlet pipe is sealed and fitted to the side wall of the valve body.

[0007] As a preferred embodiment of this utility model, a water outlet pipe is fixedly connected to the end of the valve body, and a drain valve is provided on the side wall of the water outlet pipe.

[0008] In a preferred embodiment of this utility model, a limiting plate is fixedly connected to the side wall of the valve body, a connecting pipe is fixedly connected to the side wall of the limiting plate, and the valve stem is inserted into the side wall of the connecting pipe.

[0009] As a preferred embodiment of this utility model, a locking block is fixedly connected to the side wall of the stationary ring seat, and a slot for cooperating with the locking block is opened on the side wall of the moving ring seat, and the locking block is inserted into the slot of the moving ring seat.

[0010] In a preferred embodiment of this utility model, a sealing gasket is installed on the side wall of the moving ring seat to cooperate with the side wall of the stationary ring seat, and the moving ring seat and the side wall of the stationary ring seat are tightly fitted together.

[0011] As a preferred embodiment of this utility model, a locking ring is sleeved on the side wall of the stationary ring seat, and a sealing gasket is provided on the side wall of the locking ring to fit tightly against the side wall of the stationary ring seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are: through the sealing structure in which the dynamic ring seat and the static ring seat cooperate, the dynamic sealing surface contact pressure is stable and the static sealing gasket compression rate is reduced, which solves the problem of hydraulic valve leakage and avoids hydraulic oil waste and environmental pollution; when replacing the dynamic ring seat, the static ring seat, and the sealing gasket, there is no need to disassemble the valve body, only to loosen the pressure cap and the locking ring, which shortens the replacement time and improves the maintenance efficiency compared with traditional hydraulic valves. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the sealing component and valve stem assembly structure of this utility model; Figure 4 This is a schematic diagram of the disassembly structure of the sealing component of this utility model.

[0014] In the diagram: 100, Pipe assembly; 101, Valve body; 102, Filler block; 103, Fixing block; 104, Valve stem; 105, Valve core; 106, Inlet pipe; 107, Outlet pipe; 108, Limiting plate; 109, Connecting pipe; 200, Sealing assembly; 201, Housing; 202, Gland; 203, Spring seat; 204, Spring; 205, Push ring; 206, Moving ring seat; 207, Stationary ring seat; 208, Clamping block; 209, Locking ring. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0018] Example 1 Reference Figure 1-4 This is an embodiment of the present invention, which provides a leak-proof hydraulic valve, comprising: The pipeline assembly 100 includes a valve body 101, a filler block 102 fixedly connected to the side wall of the valve body 101, a fixing block 103 fixedly connected to the side wall of the filler block 102, and a valve stem 104 fixedly connected to the side wall of the fixing block 103. The valve stem 104 is movably inserted into the end of the valve body 101, and a valve core 105 is fixedly connected to the end of the valve stem 104. The side wall of the valve core 105 slides in contact with the inner wall of the valve body 101. The sealing assembly 200 includes a housing 201 fixedly connected to the side wall of the valve body 101, a pressure cap 202 rotatably mounted on the side wall of the valve stem 104, a spring seat 203 fixedly connected to the side wall of the pressure cap 202, a spring 204 fixedly connected to the side wall of the spring seat 203, a push ring 205 sleeved on the side wall of the spring 204, a moving ring seat 206 snapped into the side wall of the push ring 205, and a stationary ring seat 207 inserted into the side wall of the moving ring seat 206. The valve stem 104 is inserted into the center of the housing 201.

[0019] Specifically, the filler block 102 is fixedly connected to the interface on the side wall of the valve body 101 to fill the gap between the valve body and the fixed block 103, enhance the structural sealing, and prevent hydraulic oil from leaking from the interface gap; the fixed block 103 is fixedly connected to the side wall of the filler block 102 to ensure that the valve stem does not deviate when rotating; the valve stem 104 is movably inserted into the side wall of the valve body 101, and its end is fixedly connected to the valve core 105, driving the valve core to move synchronously, thereby realizing the opening, closing, or flow regulation of the valve body channel.

[0020] Furthermore, the inlet pipe is fixedly connected to the inlet interface on the side wall of the valve body 101, and the outlet pipe 107 is fixedly connected to the outlet interface at the end of the valve body 101; the structure is similar to that of the inlet pipe 106, with a sealing gasket at the interface and a drain valve installed on the side wall, which can manually control the opening and closing of the outlet pipe; the limiting plate 108 is fixedly connected to the side wall of the valve body 101; the plate has an installation hole for the connecting pipe 109, and the connecting pipe 109 is fixedly connected in the installation hole of the limiting plate 108 to ensure that the valve stem does not deviate.

[0021] Preferably, the housing 201 is fixedly connected to the side wall of the valve body 101 and sleeved on the outside of the valve stem 104; a sealing cavity is formed inside the housing; the pressure cap 202 is rotatably installed on the side wall of the valve stem 104; the outside of the pressure cap is connected to the inner wall of the housing 201 by threads, and tightening the pressure cap can compress the internal spring 204, adjust the preload of the spring, and thus adjust the contact pressure of the sealing components to ensure the sealing effect; the spring seat 203 is fixedly connected to the inner side wall of the pressure cap 202, and the side wall of the spring 204 contacts the push ring 205, applying pressure to the push ring so that the moving ring seat 206 and the stationary ring seat 207 fit tightly together.

[0022] It should be noted that the moving ring seat 206 is snapped onto the side wall of the push ring 205, and a sealing gasket is provided between the moving ring seat and the push ring. The stationary ring seat 207 is fixedly inserted into the side wall of the moving ring seat 206, and a locking block 208 is provided on the side wall of the stationary ring seat, which cooperates with the locking groove of the moving ring seat. The sealing gaskets are respectively provided on the mating surfaces of the moving ring seat 206 and the stationary ring seat 207, the contact surfaces of the moving ring seat and the push ring 205, and the interfaces of the inlet pipe 106 and the outlet pipe 107 with the valve body. The locking ring 209 is sleeved on the side wall of the stationary ring seat 207. Tightening the locking ring can fix the stationary ring seat inside the housing and prevent displacement.

[0023] During use, after the device is assembled, tighten the pressure cap 202. The pressure cap compresses the spring 204 through the spring seat 203, and pushes the moving ring seat 206 through the push ring 205, so that the moving ring seat and the stationary ring seat 207 fit tightly together. At the same time, the sealing gaskets at the interfaces of the water inlet pipe 106, the water outlet pipe 107 and the valve body 101 are compressed to ensure that all possible leakage parts are sealed. At this time, the valve core 105 is completely fitted with the valve body 101 channel under the action of the valve stem 104, and the hydraulic valve is in the closed state. When the inlet pipe 106 is opened, the liquid enters the channel of the valve body 101 through the inlet pipe, driving the valve stem 104 to rotate. The valve stem drives the valve core 105 to move synchronously, causing the valve core to be misaligned with the valve body channel, forming a flow gap; the liquid flows to the outlet pipe 107, realizing the delivery. When the valve stem 104 rotates, the moving ring seat 206 moves synchronously with the valve stem, and the stationary ring seat 207 is fixed inside the housing 201. The contact surfaces of the moving ring seat and the stationary ring seat are always in close contact, forming a dynamic seal. When the liquid pressure increases, the spring is further compressed, and the contact pressure increases synchronously. When the pressure decreases, the spring rebounds, and the contact pressure remains stable. If the contact surfaces of the moving ring seat 206 and the stationary ring seat 207 wear down after long-term use, resulting in a decrease in sealing effect, the locking ring 209 and the gland 202 can be loosened, the old seal can be removed, and new moving ring seats, stationary ring seats and sealing gaskets can be replaced. The gland and locking ring can then be tightened again to restore the sealing effect. The replacement process does not require disassembling the entire hydraulic valve, making the operation convenient.

[0024] In summary, the sealing structure using the dynamic ring seat 206 and the static ring seat 207 in combination ensures stable dynamic sealing surface contact pressure and reduces static gasket compression rate, thus solving the hydraulic valve leakage problem and avoiding hydraulic oil waste and environmental pollution. When replacing the dynamic ring seat, static ring seat, and gasket, there is no need to disassemble the valve body; only the pressure cap 202 and locking ring 209 need to be loosened, shortening the replacement time and improving maintenance efficiency compared to traditional hydraulic valves.

[0025] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0026] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0027] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A leak-proof hydraulic valve, characterized in that: include, The pipeline assembly (100) includes a valve body (101), a filler block (102) fixedly connected to the side wall of the valve body (101), a fixing block (103) fixedly connected to the side wall of the filler block (102), and a valve stem (104) fixedly connected to the side wall of the fixing block (103). The valve stem (104) is movably inserted into the end of the valve body (101), and a valve core (105) is fixedly connected to the end of the valve stem (104). The side wall of the valve core (105) slides in contact with the inner wall of the valve body (101). The sealing assembly (200) includes a housing (201) fixedly connected to the side wall of the valve body (101), a pressure cap (202) rotatably mounted on the side wall of the valve stem (104), a spring seat (203) fixedly connected to the side wall of the pressure cap (202), a spring (204) fixedly connected to the side wall of the spring seat (203), a push ring (205) sleeved on the side wall of the spring (204), a moving ring seat (206) snapped into the side wall of the push ring (205), and a stationary ring seat (207) inserted into the side wall of the moving ring seat (206). The valve stem (104) is inserted into the center of the housing (201).

2. The anti-leakage hydraulic valve according to claim 1, characterized in that: A water inlet pipe (106) is fixedly connected to the side wall of the valve body (101), and the water inlet pipe (106) is sealed and attached to the side wall of the valve body (101).

3. The anti-leakage hydraulic valve according to claim 2, characterized in that: The valve body (101) is fixedly connected to a water outlet pipe (107) at its end, and a drain valve is provided on the side wall of the water outlet pipe (107).

4. A leak-proof hydraulic valve according to claim 3, characterized in that: A limiting plate (108) is fixedly connected to the side wall of the valve body (101), and a connecting pipe (109) is fixedly connected to the side wall of the limiting plate (108). The valve stem (104) is inserted into the side wall of the connecting pipe (109).

5. A leak-proof hydraulic valve according to claim 4, characterized in that: The stationary ring seat (207) has a fixedly connected locking block (208) on its side wall, and the moving ring seat (206) has a locking groove on its side wall that cooperates with the locking block (208). The locking block (208) is inserted into the locking groove of the moving ring seat (206).

6. A leak-proof hydraulic valve according to claim 5, characterized in that: The moving ring seat (206) is fitted with a sealing gasket that mates with the side wall of the stationary ring seat (207), and the moving ring seat (206) and the side wall of the stationary ring seat (207) are tightly fitted together.

7. A leak-proof hydraulic valve according to claim 6, characterized in that: The side wall of the stationary ring seat (207) is fitted with a locking ring (209), and the side wall of the locking ring (209) is provided with a sealing gasket that fits tightly against the side wall of the stationary ring seat (207).

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