Tool for adjusting compression amount of spring of one-way valve
Through the rotation nut and lock nut of tool one and tool two, the problem of slipping and scratching valve core in the prior art adjustment of the compression amount of the one-way valve spring is solved, and safe and effective pressure adjustment is achieved.
Patent Information
- Application Number
- CN202421849870.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-07-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing one-way valve spring compression adjustment tooling is prone to slipping and scratching the valve core surface, and the operating space is limited.
Design a tool combination including tool one, tool two and tool three. Tool one is used to set nuts, tool two is used to set lock nuts, tool three is used to stop the valve core. By combining tool one and tool two, the spring compression amount is adjusted to avoid slippage and scratches.
The opening pressure of the check valve is safely and effectively adjusted, avoiding damage to the valve core surface, and improving operational reliability and safety.
Smart Images
Figure CN223137055U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve tests, in particular to a tooling for adjusting the compression amount of a spring of a check valve. Background Art
[0002] The check valve is a check valve for preventing the backflow of gas and fuel in the fuel tank, and is opened after the engine is started to introduce the gas of the engine into the fuel tank.
[0003] The check valve is composed of a first adapter nozzle, a lock nut 01, a nut 02, a spring, a valve body, a valve core 03, an O-ring and a second adapter nozzle. When the working medium pressure in the use system is higher than the opening pressure of the product, the medium pressure overcomes the spring force to push the valve core to move, so that the check valve opens automatically. When the reverse pressure rises to the reverse sealing pressure value of the product, the spring force and the working pressure act on the valve core together to make the check valve close automatically, thereby preventing the backflow of the working medium and ensuring that the system works at its normal pressure. The structure diagram of the debugged part of the check valve is as Figure 1 shown.
[0004] The first opening pressure of the check valve is controlled by adjusting the compression amount of the spring. When the first opening pressure is high, the compression amount of the spring is large; when the first opening pressure is low, the compression amount of the spring is small.
[0005] The existing method for using the spring compression amount adjusting tooling is to use a tool to fix the valve core groove to prevent the valve core from rotating, and use two open-end wrenches to cooperate with each other to tighten the nut and the lock nut, and achieve the purpose of adjusting the spring compression amount by controlling the screwing-in amount of the nut and the lock nut. During the locking process, the tool catches the flat groove of the valve core to prevent the valve core from rotating, but there are situations of hand injury, easy slipping and scratching of the valve core surface in this process; and since the valve core is located inside the valve body, the operable space of the two open-end wrenches is not large, and there will also be a situation of damaging the upper end surface of the valve body. Summary of the Invention
[0006] Aiming at the above technical problems, the utility model provides a tooling for adjusting the compression amount of a spring of a check valve, which is used to solve the problem that the tooling for adjusting the spring compression amount in the prior art is prone to slipping and scratching the surface of the valve core.
[0007] In order to achieve the above purpose, the technical solution of the utility model is realized as follows:
[0008] A tooling for adjusting the compression amount of the spring of a check valve, comprising tooling one, tooling two and tooling three. Tooling one is provided with an operation hole one for sleeving outside the nut and for rotating the nut, and tooling one is also provided with a through hole for tooling two to pass through and communicating with the operation hole one so that tooling two contacts and locks the nut. Tooling two is provided with an operation hole two for sleeving outside the locking nut and for rotating the locking nut; A rotation stopping part for embedding the valve core is provided on tooling three to stop the rotation of the valve core. By stopping the rotation of the valve core through tooling three, using tooling one to sleeve outside the nut, tooling two is inserted into the through hole and sleeved outside the locking nut, and the nut and the locking nut are rotated through the mutual cooperation of tooling one and tooling two, so that the compression amount of the spring of the check valve is adjusted, and the purpose of adjusting the opening pressure of the check valve is achieved; By stopping the rotation in the way that the rotation stopping part is embedded in the valve core, the situation of slipping and scratching the surface of the valve core will not occur.
[0009] Further, the operation hole one is a large internal hexagonal hole.
[0010] Further, the through hole and tooling two are in clearance fit, the through hole is a round hole or a hexagonal hole, and the shape and size of the hexagonal hole are the same as those of the large internal hexagonal hole.
[0011] Further, a handle is connected to the side surface of tooling one.
[0012] Further, the operation hole two is a small internal hexagonal hole.
[0013] Further, the outer shape of tooling two is a cylinder, and the cylinder is coaxially arranged with the valve core.
[0014] Further, the small internal hexagonal hole penetrates through the cylinder along the axial direction of the cylinder.
[0015] Further, a radially penetrating auxiliary through hole is provided on the cylinder for inserting an auxiliary tool to assist the rotation of tooling two.
[0016] Further, the rotation stopping part is a convex rib provided at the end of tooling three, and the convex rib fits with the valve core groove.
[0017] Further, tooling three includes a cylindrical body, the convex rib is a single-character rib, the single-character rib is radially arranged on the end surface of the cylindrical body, and a flat part is provided at one end of the cylindrical body away from the single-character rib for adapting to a clamping tool.
[0018] The beneficial effects of the utility model:
[0019] 1. In the utility model, by arranging a single-character rib at the upper end of tooling three to match the single-character groove of the valve core, and two symmetrical flat parts are provided at the lower end, it is convenient to be clamped by a vise and convenient for debugging and operation;
[0020] 2. The utility model is provided with an internal hexagon on the first tooling to cooperate with the nut, and a handle is arranged on one side of the first tooling, which is convenient for the disassembly and assembly of the nut.
[0021] 3. The utility model is provided with an internal hexagon on the second tooling to cooperate with the lock nut, and the second tooling can extend into the inner side of the working part of the first tooling to contact the lock nut, so that the debugging work of the second tooling and the first tooling does not interfere with each other.
[0022] 4. The utility model extends the second tooling along the axial direction of the valve core, and an auxiliary through hole is arranged on the extended part, which is convenient for laterally inserting a tool to assist in rotating the second tooling, so as to play a debugging role by rotating the lock nut. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0024] Figure 1 It is a schematic structural diagram of the debugged part of the check valve of the present utility model.
[0025] Figure 2 It is a schematic use structural diagram of the present utility model.
[0026] Figure 3 It is a schematic structural diagram of the first tooling of the present utility model.
[0027] Figure 4 It is a schematic structural diagram of the second tooling of the present utility model.
[0028] Figure 5 It is a schematic structural diagram of the third tooling of the present utility model.
[0029] Figure 6 For Figure 5 side view structural diagram.
[0030] In the figure: 01, lock nut; 02, nut; 03, valve core; 031, valve core groove; 1, first tooling; 2, second tooling; 3, third tooling; 301, convex rib. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0032] As Figures 1 to 6 shown, a tooling for adjusting the compression amount of a check valve spring according to Embodiment 1 of the present utility model includes a tooling one 1, a tooling two 2, and a tooling three 3. The tooling one 1 is provided with an operation hole one for sleeving outside the nut 02 and for rotating the nut 02. The tooling one 1 is further provided with a through hole for the tooling two 2 to pass through and communicating with the operation hole one so that the tooling two 2 contacts and locks the nut 01. The tooling two 2 is provided with an operation hole two for sleeving outside the lock nut 01 and for rotating the lock nut 01; The tooling three 3 is provided with an anti-rotation portion for embedding the valve core 03 to prevent the valve core 03 from rotating. As Figure 2 shown, the valve core 03 is prevented from rotating by the tooling three 3. The tooling one 1 is sleeved outside the nut 02, and the tooling two 2 is inserted into the through hole and sleeved outside the lock nut 01. By the mutual cooperation of the tooling one 1 and the tooling two 2 to rotate the nut and the lock nut, the compression amount of the spring of the check valve is adjusted to achieve the purpose of adjusting the opening pressure of the check valve.
[0033] Furthermore, as Figure 3 shown, the operation hole one is a large internal hexagonal hole. Among them, the tooling one 1 includes a cylindrical body. And in this embodiment, the body of the tooling one 1 includes a large cylindrical platform and a small cylindrical platform coaxially arranged below the large cylindrical platform. The large internal hexagonal hole is coaxially arranged in the small cylindrical platform.
[0034] Furthermore, as Figure 3 shown, a handle is connected to the side surface of the tooling one 1. That is, a radially extending handle is connected to the side surface of the large cylindrical platform.
[0035] Embodiment 2 is different from Embodiment 1 in that, as Figure 2 and Figure 3 shown, the through hole in the tooling one 1 is in clearance fit with the tooling two 2. Among them, the through hole is arranged above the operation hole one and is connected to the operation hole one, facilitating the tooling two 2 to be inserted into the through hole to contact the lock nut 01. The through hole is a round hole or a hexagonal hole, and the shape and size of the hexagonal hole are the same as those of the large internal hexagonal hole. In this embodiment, the through hole is a hexagonal hole, and the hexagonal hole and the large internal hexagonal hole of the operation hole one are a whole hexagonal hole axially penetrating the large cylindrical platform and the small cylindrical platform.
[0036] Embodiment 3 is different from Embodiment 1 in that, as Figure 2 andFigure 4 As shown, the second operation hole is a small internal hexagonal hole.
[0037] Furthermore, as Figure 2 and Figure 4 shown, the outer shape of the second tooling 2 is a cylinder, and the cylinder is coaxially arranged with the valve core 03.
[0038] Furthermore, the small internal hexagonal hole penetrates through the cylinder along the axial direction of the cylinder.
[0039] Furthermore, a radially penetrating auxiliary through hole 201 is provided in the upper part of the cylinder. The auxiliary through hole 201 is used to insert an auxiliary tool to assist the rotation of the second tooling 2.
[0040] Embodiment 4 is different from Embodiment 1 in that the third tooling 3 includes a cylindrical body, and the anti-rotation part is a convex rib 301 provided at the end of the third tooling 3, i.e., the cylindrical body.
[0041] In this embodiment, the convex rib 301 is a single-character rib, and the single-character rib fits with the single-character valve core groove 031 at the lower part of the valve core 03. The single-character rib is radially arranged on the end face of the cylindrical body.
[0042] A flat part is provided at one end of the cylindrical body away from the single-character rib 301 for adapting to a clamping tool.
[0043] The use process of the present utility model is as follows:
[0044] Align the single-character rib 301 at one end of the third tooling 3 with the single-character valve core groove 031 of the valve core 03, and insert it into the valve core groove 031 to prevent the valve core 3 from rotating. During the process, a vise can be used to clamp the third tooling 3. Then, use the first tooling 1 to sleeved outside the nut 02, and insert the second tooling 2 into the through hole to sleeve outside the lock nut 01. By the mutual cooperation of the first tooling 1 and the second tooling 2, rotate the nut and the lock nut, and screw the lock nut 01 and the nut 02 into the threaded part of the valve core 03 in sequence. After screwing to an appropriate position, control the screwing-in amount of the nut and the lock nut to achieve the purpose of adjusting the spring compression amount.
[0045] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A tool for adjusting the compression amount of a check valve spring, characterized in that: It includes fixture one (1), fixture two (2) and fixture three (3). Fixture one (1) is provided with an operation hole one for sleeving outside the nut (02) and for rotating the nut (02). Fixture one (1) is also provided with a through hole for fixture two (2) to pass through and communicate with the operation hole one so that fixture two (2) can contact and lock the nut (01). Fixture two (2) is provided with an operation hole two for sleeving outside the lock nut (01) and for rotating the lock nut (01); Fixture three (3) is provided with an anti-rotation part for embedding the valve core (03) to prevent the valve core (03) from rotating.
2. The tooling for adjusting the spring compression amount of the one-way valve according to claim 1, characterized in that: The operation hole one is a large internal hexagonal hole.
3. The tooling for adjusting the spring compression amount of the one-way valve according to claim 2, characterized in that: The through hole is in clearance fit with fixture two (2). The through hole is a round hole or a hexagonal hole, and the shape and size of the hexagonal hole are the same as those of the large internal hexagonal hole.
4. The tooling for adjusting the spring compression amount of the one-way valve according to any one of claims 1 to 3, characterized in that: A handle is connected to the side surface of fixture one (1).
5. The tooling for adjusting the spring compression amount of the one-way valve according to any one of claims 1 to 3, characterized in that: The operation hole two is a small internal hexagonal hole.
6. The tooling for adjusting the spring compression amount of the one-way valve according to claim 5, characterized in that: The outer shape of fixture two (2) is a cylinder, and the cylinder is coaxially arranged with the valve core (03).
7. The tooling for adjusting the spring compression amount of the one-way valve according to claim 6, characterized in that: The small internal hexagonal hole penetrates the cylinder along the axial direction of the cylinder.
8. The tooling for adjusting the spring compression amount of the one-way valve according to claim 6 or 7, characterized in that: The cylinder is provided with a radially penetrating auxiliary through hole (201) for inserting an auxiliary tool to assist the rotation of fixture two (2).
9. The tooling for adjusting the spring compression amount of the one-way valve according to any one of claims 1 to 3, 6, and 7, characterized in that: The anti-rotation part is a convex rib (301) arranged at the end of fixture three (3), and the convex rib (301) fits with the valve core groove (031).
10. The tooling for adjusting the spring compression amount of the one-way valve according to claim 9, characterized in that: Fixture three (3) includes a cylindrical body. The convex rib (301) is a single-character rib, and the single-character rib is radially arranged on the end surface of the cylindrical body. One end of the cylindrical body away from the single-character rib (301) is provided with a flat part for adapting to a clamping tool.