Overflow valve testing device

Abstract

The utility model provides a kind of overflow valve debugging device, including rack, oil storage pool, oil pump, pressure gauge and installation of auxiliary tool of overflow valve to be debugged are installed on the rack, and the oil storage pool is sequentially connected with oil pump, pressure gauge, overflow valve to be debugged by oil pipe. The utility model adopts the overall architecture including rack, oil storage pool, oil pump, pressure gauge and the auxiliary tool of overflow valve to be debugged that can be installed, and is sequentially connected by oil pipe to constitute hydraulic circuit, realizes the simplification of system structure, discards the complex customized components in traditional special equipment, selects common hydraulic component and cooperates replaceable auxiliary tool, significantly reduces manufacturing cost and maintenance difficulty, can simultaneously adapt to the debugging needs of different models of overflow valve by replacing or adjusting auxiliary tool, effectively improves the versatility and practicality of equipment.

Description

Technical Field

[0001] This utility model relates to the field of overflow valve debugging technology, and in particular to an overflow valve debugging device. Background Technology

[0002] As a core safety component in a hydraulic system, the performance of the relief valve directly affects the stability and reliability of the entire system. In hydraulic pumps or systems, the relief valve is primarily used to limit the system's maximum operating pressure, preventing damage to equipment or accidents caused by excessive pressure. Therefore, pressure testing of the relief valve before it leaves the factory is crucial; its opening pressure, closing pressure, and stability must meet design requirements.

[0003] Currently, the industry generally relies on specialized commissioning equipment for the commissioning of relief valves. This equipment is usually customized by professional manufacturers, has a complex structure, is expensive, and has high maintenance and parts replacement costs. In addition, as companies iterate on product models or change their structures, the original equipment is often unable to adapt to the new valve body, requiring reordering or modification, which leads to extended production cycles and increased costs.

[0004] Therefore, there is an urgent need to propose an overflow valve debugging device that is simple in structure, low in cost, and easy to maintain and upgrade. Utility Model Content

[0005] This utility model proposes an overflow valve debugging device, which solves the problems of poor adaptability and high maintenance costs of existing overflow valve debugging equipment.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides an overflow valve debugging device, including a stand, on which an oil storage tank, an oil pump, a pressure gauge and an auxiliary tool for installing the overflow valve to be debugged are mounted. The oil storage tank is connected to the oil pump, pressure gauge and overflow valve to be debugged in sequence through oil pipes.

[0007] Optionally, the oil pump includes an electric pump and / or a manual pump with a check valve.

[0008] Specifically, the auxiliary device includes a base, a positioning ring for installing an overflow valve is provided in the center of the top surface of the base, and an oil passage communicating with the inner cavity of the positioning ring is opened on the side of the base. The inlet of the oil passage is connected to an oil pipe, and the outlet is directly opposite to the oil inlet hole at the bottom of the overflow valve. Support rods are provided on both sides of the positioning ring, and a pressure plate for pressing the top of the overflow valve is detachably installed on the top of the support rod. A through hole is opened in the center of the top surface of the pressure plate, and the through hole is directly opposite to the overflow hole or adjustment hole at the top of the overflow valve.

[0009] Specifically, the overflow valve includes a valve body, and the valve body has a cavity that extends through the top. The cavity contains a valve core, an elastic element, and an adjusting screw arranged sequentially from bottom to top. The two ends of the elastic element abut against the valve core and the adjusting screw, respectively. The bottom surface of the cavity has an oil inlet hole that extends through the valve body, and the top surface of the adjusting screw has an overflow hole that extends through the cavity. The elastic element is used to force the bottom surface of the valve core to seal against the oil inlet hole on the bottom surface of the cavity.

[0010] Furthermore, a positioning sleeve is provided inside the positioning ring, the outer wall of the positioning sleeve is sealed to the inner wall of the positioning ring, and a sealing ring is provided between the inner wall of the positioning sleeve and the outer wall of the overflow valve.

[0011] Specifically, the pressure plate has positioning holes at both ends that match the support rod, and the support rod has a locking nut at the top.

[0012] Preferably, one of the positioning holes has a notch on one side wall, and the width of the notch is greater than the outer diameter of the support rod.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model adopts an overall structure including a stand, an oil storage tank, an oil pump, a pressure gauge and an auxiliary tool for installing the overflow valve to be debugged. The hydraulic circuit is formed by connecting oil pipes in sequence, which simplifies the system structure, eliminates the complex customized parts in traditional special equipment, selects common hydraulic components and uses replaceable auxiliary tools, which significantly reduces manufacturing costs and maintenance difficulty. At the same time, it can adapt to the debugging requirements of different models of overflow valves by replacing or adjusting the auxiliary tools, effectively improving the versatility and practicality of the equipment. (2) This utility model uses an electric pump and a manual pump with a check valve as hydraulic power sources. While ensuring that the system can be operated electrically and improving the debugging efficiency, it also takes into account the reliability of the manual pump under high pressure conditions, expands the debugging pressure range of the relief valve, and enhances the applicability and stability of the equipment under different working conditions. (3) By setting a base with a positioning ring and a detachable pressure plate, this utility model realizes the quick and accurate installation and fixing of the overflow valve, which significantly improves the clamping efficiency; at the same time, it ensures the oil circuit of the overflow valve and the oil circuit of the auxiliary tool are sealed and connected, thus ensuring the debugging accuracy. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0015] Figure 1 This is a perspective view of an overflow valve debugging device according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the auxiliary device equipped with an overflow valve in an embodiment of this utility model; Figure 3 This is a schematic diagram of the external structure of the accessory equipped with an overflow valve in an embodiment of this utility model; In the diagram: 1. Stand; 2. Oil reservoir; 3. Pressure gauge; 4. Overflow valve; 5. Auxiliary fixture; 6. Electric pump; 7. Manual pump; 8. Base; 9. Positioning ring; 10. Oil passage; 11. Oil inlet; 12. Support rod; 13. Pressure plate; 14. Through hole; 15. Overflow hole; 16. Valve body; 17. Cavity; 18. Valve core; 19. Elastic element; 20. Adjusting screw; 21. Positioning sleeve; 22. Sealing ring; 23. Locking nut; 24. Notch; 25. Power supply; 26. Control box. Detailed Implementation

[0016] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] Reference Figures 1 to 3 This utility model provides an overflow valve debugging device, including a stand 1. The stand 1 is equipped with an oil storage tank 2, an oil pump, a pressure gauge 3, and an auxiliary tool 5 on which an overflow valve 4 to be debugged is installed. The oil storage tank 2 is connected to the oil pump, pressure gauge 3, and overflow valve 4 to be debugged in sequence through oil pipes.

[0018] This utility model adopts an overall structure including a stand 1, an oil storage tank 2, an oil pump, a pressure gauge 3, and an auxiliary device 5 for installing an overflow valve 4 to be debugged. The hydraulic circuit is formed by connecting oil pipes in sequence, which simplifies the system structure, eliminates the complex customized parts in traditional special equipment, selects common hydraulic components and uses replaceable auxiliary devices 5, which significantly reduces manufacturing costs and maintenance difficulty. At the same time, it can adapt to the debugging requirements of different models of overflow valves 4 by replacing or adjusting the auxiliary devices 5, effectively improving the versatility and practicality of the equipment.

[0019] Optionally, such as Figure 1 As shown, the oil pump includes an electric pump 6 and / or a manual pump 7 with a check valve. In this embodiment, the electric pump 6 and the manual pump 7 with a check valve are used as hydraulic power sources. While ensuring that the system can be operated electrically and improving the debugging efficiency, the reliability of the manual pump 7 under high pressure conditions is also taken into account. This expands the debugging pressure range of the relief valve 4 and enhances the applicability and stability of the equipment under different working conditions.

[0020] In practice, if the pressure threshold of the relief valve 4 to be adjusted is low, only the electric pump 6 can be used as the hydraulic drive source (but it cannot provide high oil pressure); or only the manual pump 7 can be used as the hydraulic drive source, but the efficiency is relatively low. The optimal solution is to use the manual pump 7 and the electric pump 6 in series, using the electric pump 6 to improve efficiency and the manual pump 7 to increase the oil pressure.

[0021] Specifically, such as Figure 2 , 3 As shown, the auxiliary tool 5 includes a base 8. A positioning ring 9 for installing the overflow valve 4 is located in the center of the top surface of the base 8. An oil passage 10 communicating with the inner cavity of the positioning ring 9 is opened on the side of the base 8. The inlet of the oil passage 10 is connected to an oil pipe, and the outlet is directly opposite the oil inlet hole 11 at the bottom of the overflow valve 4. Support rods 12 are provided on both sides of the positioning ring 9. A pressure plate 13 for pressing down the top of the overflow valve 4 is detachably installed on the top of the support rod 12. A through hole 14 is opened in the center of the top surface of the pressure plate 13, directly opposite the overflow hole 15 or adjustment hole at the top of the overflow valve 4. By setting up the base 8 with the positioning ring 9 and the detachable pressure plate 13, the overflow valve 4 can be quickly and accurately installed and fixed, significantly improving clamping efficiency. At the same time, it ensures a sealed connection between the oil passage of the overflow valve 4 and the oil passage of the auxiliary tool 5, guaranteeing debugging accuracy.

[0022] Specifically, such as Figure 2 As shown, the overflow valve 4 includes a valve body 16, and the valve body 16 has a cavity 17 that extends through the top (the top opening of the cavity 17 is the adjustment hole). The cavity 17 has a valve core 18, an elastic element 19, and an adjusting screw 20 arranged sequentially from bottom to top. The two ends of the elastic element 19 abut against the valve core 18 and the adjusting screw 20, respectively. The bottom surface of the cavity 17 has an oil inlet hole 11 that extends through the valve body 16, and the top surface of the adjusting screw 20 has an overflow hole 15 that extends through. The elastic element 19 is used to force the bottom surface of the valve core 18 to seal against the oil inlet hole 11 on the bottom surface of the cavity 17.

[0023] In this embodiment, as Figure 1 As shown, the auxiliary device 5 can be directly placed in the oil storage tank 2 (installed on the side wall or bottom). During the debugging process, the oil overflowing from the overflow valve 4 flows directly back into the oil storage tank 2 to realize oil circulation.

[0024] In the specific implementation process, matching accessories 5 can be designed for different models of overflow valves 4, and other components do not need to be adjusted, thereby greatly saving development costs and development cycle.

[0025] Furthermore, such as Figure 2 , 3As shown, a positioning sleeve 21 is provided inside the positioning ring 9. The outer wall of the positioning sleeve 21 is sealed to the inner wall of the positioning ring 9. A sealing ring 22 is provided between the inner wall of the positioning sleeve 21 and the outer wall of the relief valve 4. By adding a positioning sleeve 21 and a sealing ring 22 inside the positioning ring 9, the positioning accuracy and sealing performance of the relief valve 4 during installation are further improved, effectively preventing pressure leakage and ensuring stable transmission of hydraulic pressure, thereby improving the accuracy and reliability of pressure debugging.

[0026] Specifically, such as Figure 2 , 3 As shown, the pressure plate 13 has positioning holes at both ends that match the support rod 12, and the top of the support rod 12 has a locking nut 23. By tightening the locking nut 23, the pressure plate 13 presses the top of the overflow valve 4.

[0027] Preferably, such as Figure 2 , 3 As shown, one of the positioning holes has a notch 24 on one side wall, and the width of the notch 24 is greater than the outer diameter of the support rod 12. The positioning hole with the notch 24, in conjunction with the locking nut 23, enables quick loading and unloading and reliable clamping of the pressure plate 13. This structure not only simplifies operation but also reduces auxiliary time, further improving overall debugging efficiency.

[0028] In this embodiment, as Figure 1 As shown, the stand 1 is also equipped with a power supply module 25 and a control box 26. The power supply module 25 is used to supply power to various electrical components, and the control box 26 is used to control the operating status of the electric pump 6.

[0029] The debugging process of the debugging device in this embodiment is as follows: First, place the overflow valve 4 to be tested inside the positioning sleeve 21 on the base 8, ensuring that the oil inlet hole 11 at the bottom of the valve body 16 is connected to the outlet of the oil passage 10 inside the base 8; then, put the pressure plate 13 on the support rod 12 through the positioning holes at both ends, press it down and align the through hole 14 on the pressure plate 13 with the overflow hole 15 (i.e., adjustment hole) at the top of the overflow valve 4, and use the lock nut 23 to tighten the pressure plate 13, thereby reliably pressing and fixing the overflow valve 4.

[0030] Confirm that all oil pipes have sequentially connected the oil reservoir 2, electric pump 6, manual pump 7, pressure gauge 3, and the debugging tool 5 with the overflow valve 4 installed, forming a complete hydraulic circuit; after checking the sealing of each interface, power the power supply module 25.

[0031] Power module 25 is activated, and the electric pump 6 is controlled via control box 26 (externally equipped with control buttons and switches) to draw hydraulic oil from oil reservoir 2 and deliver pressurized oil to the system. If a higher commissioning pressure is required or the electric pump 6 pressure is insufficient, the manual pump 7 handle can be operated simultaneously to increase pressure. The system pressure gradually increases and is transmitted through the oil pipe to the oil inlet 11 at the bottom of the relief valve 4.

[0032] The operator closely observes the changes in the pressure gauge 3 reading. Using a tool (such as a screwdriver) through the through-hole 14 at the top of the pressure plate 13, the operator adjusts the adjusting screw 20 at the top of the relief valve 4 to change the preload of the internal elastic element 19, thereby setting the opening pressure of the relief valve 4. Pressure is continuously applied until the relief valve 4 reaches the preset opening pressure. At this point, the valve opens, and excess oil flows out from the overflow hole 15 at its top through the through-hole 14. Once the pressure gauge 3 reading stabilizes at the preset value and the relief valve 4 operates as required, the commissioning is complete.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A relief valve adjustment device, characterized in that, Includes a stand (1), on which an oil storage tank (2), an oil pump, a pressure gauge (3) and an auxiliary fixture (5) with an overflow valve (4) to be tested are installed. The oil storage tank (2) is connected to the oil pump, the pressure gauge (3) and the overflow valve (4) to be tested in sequence through oil pipes.

2. The overflow valve adjustment device as described in claim 1, characterized in that, The oil pump includes an electric pump (6) and / or a manual pump (7) with a check valve.

3. The overflow valve adjustment device as described in claim 1, characterized in that, The auxiliary tool (5) includes a base (8), and a positioning ring (9) for installing the overflow valve (4) is provided in the middle of the top surface of the base (8). An oil passage (10) communicating with the inner cavity of the positioning ring (9) is provided on the side of the base (8). The inlet of the oil passage (10) is connected to the oil pipe, and the outlet is directly opposite to the oil inlet hole (11) at the bottom of the overflow valve (4). Support rods (12) are provided on both sides of the positioning ring (9). A pressure plate (13) for pressing the top of the overflow valve (4) is detachably installed on the top of the support rod (12). A through hole (14) is provided in the middle of the top surface of the pressure plate (13). The through hole (14) is directly opposite to the overflow hole (15) or adjustment hole at the top of the overflow valve (4).

4. The overflow valve adjustment device as described in claim 3, characterized in that, The overflow valve (4) includes a valve body (16), and the valve body (16) has a cavity (17) that extends through the top. The cavity (17) has a valve core (18), an elastic element (19) and an adjusting screw (20) arranged sequentially from bottom to top. The two ends of the elastic element (19) abut against the valve core (18) and the adjusting screw (20) respectively. The bottom surface of the cavity (17) has an oil inlet hole (11) that extends through the valve body (16), and the top surface of the adjusting screw (20) has an overflow hole (15) that extends through. The elastic element (19) is used to force the bottom surface of the valve core (18) to seal against the oil inlet hole (11) on the bottom surface of the cavity (17).

5. The overflow valve adjustment device as described in claim 3, characterized in that, The positioning ring (9) is provided with a positioning sleeve (21), the outer wall of the positioning sleeve (21) is sealed to the inner wall of the positioning ring (9), and a sealing ring (22) is provided between the inner wall of the positioning sleeve (21) and the outer wall of the overflow valve (4).

6. The overflow valve adjustment device as described in claim 3, characterized in that, The pressure plate (13) has positioning holes at both ends that match the support rod (12), and the top of the support rod (12) has a locking nut (23).

7. The overflow valve adjustment device as described in claim 6, characterized in that, One of the positioning holes has a notch (24) on one side wall, and the width of the notch (24) is greater than the outer diameter of the support rod (12).

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