Adjustable overflow valve for mineral oil

Abstract

The utility model relates to an adjustable overflow valve for mineral oil, which comprises a valve body, an inflow hole is arranged at one end of the valve body, a plurality of overflow holes are further distributed at one end of the valve body, a valve sleeve is arranged in the valve body, an adjusting device is arranged at the other end of the valve sleeve, and the adjusting device is movably connected with a main valve core through a slow release device. The main valve element blocks the inflow hole and the overflow hole, a slow release channel is formed in the main valve element, a piston is installed in the slow release channel, and the piston makes contact with the slow release device. Therefore, the independent adjusting device is arranged, the appropriate adjusting spring distance can be selected according to the sticky type and model of the current mineral oil, and the slow release device can have the appropriate deformation stroke conveniently. The slow-release device adopts the design of double springs with unequal wire diameters, can realize layer-by-layer deformation and slow release during impact, and does not cause impact on pipeline equipment butted with the overflow hole.

Description

Technical Field

[0001] The utility model relates to a relief valve, in particular to an adjustable relief valve for mineral oil. Background Art

[0002] Existing drive devices, such as motors, require oil for lubrication and cooling to meet their long-term operational needs. High-power motors use relatively viscous mineral oil. When the oil expands due to rising temperatures, without proper external circulation guidance, it can easily overflow, impacting the motor's normal operation.

[0003] To address this issue, a relief control valve is often installed in the motor's oil inlet passage. However, the traditional relief valve structure is not suitable for viscous media and is prone to blockage at the inlet, reducing relief efficiency and causing delayed activation of the relief valve, which can still lead to oil overflow.

[0004] Furthermore, due to the wide variety of motor models, the mineral oils used have varying viscosities. This makes the overflow valve incompatible, requiring a suitable resilient reset mechanism for each mineral oil. Furthermore, mineral oil is prone to flow shock during flow, especially when overflow is required. Currently, the necessary slow-release mechanism is lacking, which can affect the normal circulation of the mineral oil during overflow and result in improper overflow in the form of splashing.

[0005] In view of the above-mentioned defects, the designer has actively carried out research and innovation in order to create an adjustable overflow valve for mineral oil to make it more valuable for industrial use. Utility Model Content

[0006] In order to solve the above technical problems, the purpose of the utility model is to provide an adjustable relief valve for mineral oil.

[0007] The utility model discloses an adjustable relief valve for mineral oil, comprising a valve body, one end of the valve body being provided with an inlet hole, and one end of the valve body being further provided with a plurality of overflow holes, wherein: a valve sleeve is installed in the valve body, and an adjusting device is installed at the other end of the valve sleeve, and the adjusting device is movably connected to a main valve core through a slow-release device, and in a standby state, the main valve core respectively blocks the inlet hole and the overflow hole, a slow-release channel is provided on the main valve core, a piston is installed in the slow-release channel, and the piston is in contact with the slow-release device, and the slow-release device comprises a main spring and a secondary spring, the main spring is sleeved on the inner side of the secondary spring, and the two are cocentrically distributed, the wire diameter of the main spring is smaller than the wire diameter of the secondary spring, and the wire diameter of the secondary spring is 1 to 1.8 mm.

[0008] Furthermore, the above-mentioned adjustable overflow valve for mineral oil, wherein the outer side of the valve body is provided with a rear end limit groove, the inner side of the rear end limit groove is provided with a rear end sealing ring, the outer side of the valve body is also provided with a middle end limit groove, the inner side of the middle end limit groove is provided with a middle end sealing ring, the outer side of the valve body is also provided with a front end limit groove, the inner side of the front end limit groove is provided with a front end sealing ring, and the outer side of the front end sealing ring is provided with a retaining ring.

[0009] Furthermore, the above-mentioned adjustable relief valve for mineral oil, wherein the adjusting device includes an adjusting screw threadedly connected to the valve sleeve, the tail end of the adjusting screw is connected to a nut, the front end of the adjusting screw is installed with an adjusting spring, the front end of the adjusting spring is installed with a conical valve core, the front end of the conical valve core extends out of the valve sleeve, the front end of the conical valve core is distributed with a contact protrusion, and the corresponding position of the piston is distributed with a docking groove.

[0010] Furthermore, in the above-mentioned adjustable relief valve for mineral oil, a retaining spring is provided on the outer side of the adjusting screw, and a receiving groove is distributed on the inner side of the valve sleeve, and the retaining spring is located in the receiving groove.

[0011] Furthermore, in the above-mentioned adjustable relief valve for mineral oil, an outer sleeve of the adjusting screw is provided with an adjusting sealing ring, and the adjusting sealing ring is in contact with the valve sleeve.

[0012] Furthermore, in the above-mentioned adjustable overflow valve for mineral oil, a limiting convex strip is distributed on the rear end of the cone valve core, and the limiting convex strip is inserted into the regulating spring.

[0013] Furthermore, in the above-mentioned adjustable overflow valve for mineral oil, a first sealing ring is distributed at the rear end of the valve sleeve, and the first sealing ring is in contact with the valve body; a second sealing ring is distributed at the front end of the valve sleeve, and a Gly ring is provided on the outer sleeve of the second sealing ring.

[0014] Furthermore, in the above-mentioned adjustable overflow valve for mineral oil, a blocking protrusion is distributed on the front end of the main valve core. In the standby state, the blocking protrusion abuts against the inlet hole, and the side wall of the main valve core abuts against the overflow hole.

[0015] By means of the above solution, the present invention has at least the following advantages:

[0016] 1. It is equipped with an independent adjustment device, which can select the appropriate adjustment spring distance according to the viscosity, type and model of the current mineral oil, so that the slow-release device has a suitable deformation stroke.

[0017] 2. The slow-release device adopts a double-spring design with unequal linear diameters. During the impact, it can achieve layer-by-layer deformation and slow release, which will not cause impact on the pipeline equipment connected to the overflow hole and avoid overflow in the overflow state.

[0018] 3. It is equipped with multiple sets of sealing structures. During use, there will be no improper overflow at the ends and joints, which will not affect the internal environment of the equipment and the circulation of mineral oil in the pipeline.

[0019] 4. The main valve core can simultaneously realize the blocking and conduction of the main inlet hole and the overflow hole, without the need for additional controllers, thus reducing the cost of use.

[0020] 5. The overall structure is simple, easy to manufacture and maintain, and meets the requirements of pre-installation positioning in conventional pipelines. It can be installed in the mineral oil lubrication pipelines of current equipment.

[0021] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of an adjustable relief valve for mineral oil.

[0023] The meanings of the reference numerals in the figures are as follows.

[0024] 1 Valve body 2 Inlet hole

[0025] 3 Overflow hole 4 Valve sleeve

[0026] 5 Main valve core 6 Piston

[0027] 7 Main spring 8 Secondary spring

[0028] 9 Rear end sealing ring 10 Middle end sealing ring

[0029] 11 Front seal 12 Retaining ring

[0030] 13 Adjusting screw 14 Nut

[0031] 15 Adjusting spring 16 Cone valve core

[0032] 17 Circlip 18 Adjusting seal ring

[0033] 19 First sealing ring 20 Second sealing ring

[0034] 21 Gray Circle DETAILED DESCRIPTION

[0035] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] like Figure 1 The adjustable relief valve for mineral oil includes a valve body 1, an inlet hole 2 is provided at one end of the valve body 1, and a plurality of overflow holes 3 are provided at one end of the valve body 1. The difference lies in that a valve sleeve 4 is installed in the valve body 1, and an adjusting device is installed at the other end of the valve sleeve 4. In this way, different rebound reset coefficients can be adjusted according to the viscosity of the mineral oil, so as to facilitate reset after overflow. Specifically, the adjusting device is movably connected to the main valve core 5 through a slow-release device. In the standby state, the main valve core 5 blocks the inlet hole 2 and the overflow hole 3 respectively. At the same time, in order to achieve moderate slow-release overflow in the event of high oil pressure according to the flow characteristics of mineral oil, a slow-release channel is provided on the main valve core 5, and a piston 6 is installed in the slow-release channel. The piston 6 is in contact with the slow-release device. To accommodate potential oil pressure fluctuations during use and prevent unnecessary back-and-forth movement of the main valve core 5, the release mechanism includes a main spring 7 and a secondary spring 8. The main spring 7 is nestled inside the secondary spring 8, with the two co-centrically located. The wire diameter of the main spring 7 is smaller than that of the secondary spring 8. This allows for multi-level, step-by-step compression during oil pressure fluctuations, achieving effective overflow release. During implementation, the wire diameter of the secondary spring 8 ranges from 1 to 1.8 mm. This effectively mitigates oil pressure fluctuations caused by mineral oil.

[0037] In accordance with a preferred embodiment of the present invention, a rear end limit groove is provided on the outside of the valve body 1, and a rear end sealing ring 9 is sleeved in the rear end limit groove. Simultaneously, a middle end limit groove is also provided on the outside of the valve body 1, and a middle end sealing ring 10 is sleeved in the middle end limit groove. Furthermore, a front end limit groove is also provided on the outside of the valve body 1, and a front end sealing ring 11 is sleeved in the front end limit groove, and a retaining ring 12 is sleeved outside the front end sealing ring 11. In this way, during use, matching and connection of different docking pipe diameters can be achieved, ensuring that no loosening occurs on the joint end faces after docking is completed. Even if liquid flow impact occurs during overflow, unnecessary displacement of the valve body 1 at the installation position will not occur, thus meeting the need for stable overflow.

[0038] Furthermore, the adjustment device includes an adjustment screw 13 threadedly connected to the valve sleeve 4. A nut 14 is connected to the rear end of the adjustment screw 13. An adjustment spring 15 is mounted on the front end of the adjustment screw 13. A cone valve core 16 is mounted on the front end of the adjustment spring 15. The front end of the cone valve core 16 extends beyond the valve sleeve 4. Thus, by adjusting the position of the adjustment screw 13, the final compressed retraction stroke of the main valve core 5 during the slow-release pressure period can be controlled, achieving optimal slow-release reserve intervention values ​​for different mineral oils and ensuring overflow within the appropriate oil pressure range. Furthermore, a contact protrusion is provided on the front end of the cone valve core 16, and a corresponding docking groove is provided at the corresponding position on the piston 6. This allows the piston 6 to drive the main valve core 5 back and contact the cone valve core 16, achieving a better slow-release effect in the event of a localized high oil pressure shock.

[0039] In actual implementation, to prevent the adjusting screw 13 from accidentally loosening at the extreme position, a retaining spring 17 is provided on the outer side of the adjusting screw 13, and a receiving groove is provided on the inner side of the valve sleeve 4, in which the retaining spring 17 is located. In this way, the adjusting screw 13 can be limited at the maximum spacing to ensure that it will not loosen. In addition, an adjusting seal ring 18 is provided on the outer side of the adjusting screw 13, and the adjusting seal ring 18 contacts the valve sleeve 4 to prevent unnecessary end overflow. Furthermore, to prevent the cone valve core 16 from tilting during movement and to avoid interference between the main spring 7 and the auxiliary spring 8, a limiting ridge is provided on the rear end of the cone valve core 16, and the limiting ridge is inserted into the adjusting spring 15.

[0040] Furthermore, a first sealing ring 19 is located at the rear end of the valve sleeve 4, contacting the valve body 1. This prevents oil from leaking out of this joint even under extreme oil pressure. Furthermore, a second sealing ring 20 is located at the front end of the valve sleeve 4, overlying a Gly ring 21. This ensures an effective contact seal at the joint when the present invention is docked with the corresponding pipeline, preventing leakage at this joint.

[0041] During implementation, in order to have a better standby temporary sealing effect, a blocking protrusion is distributed on the front end of the main valve core 5. In this way, in the standby state, the blocking protrusion abuts the inlet hole 2, and the side wall of the main valve core 5 abuts the overflow hole 3.

[0042] The working principle of this utility model is as follows:

[0043] After installation, the current oil pressure is assumed to be normal oil pressure. The user adjusts the device to make the main valve core 5 block the inlet hole 2 and the overflow hole 3. Usually, loosening it adapts to a smaller oil pressure, and tightening it adapts to a larger oil pressure.

[0044] During operation, the mineral oil experiences increased pressure due to exposure to high temperatures or the introduction of high-flow external media. During this period, the pressurized mineral oil begins to push against the main valve core 5. Simultaneously, piston 6 also begins to move inward. Consequently, the main valve core 5 and piston 6 sequentially apply pressure to the main spring 7 and auxiliary spring 8. Because the main spring 7 and auxiliary spring 8 have different wire diameters, their deformation and pressure states differ, causing the main valve core 5 to gradually build up internal pressure.

[0045] Afterwards, the inlet hole 2 and the overflow hole 3 are connected to achieve overflow under high oil pressure conditions.

[0046] During the overflow period, when the oil pressure approaches the preset value, the main spring 7 and the auxiliary spring 8 are gradually reset, and finally the valve core blocks the inlet hole 2 and the overflow hole 3 again.

[0047] During implementation, if the buffering efficiency is felt to be too fast or too slow, the user can rotate the nut 14 again to adjust the preload state of the adjustment spring 15 in the standby state so that the main spring 7 and the auxiliary spring 8 have a better deformation stroke to meet the overflow requirement.

[0048] It can be seen from the above text description and the accompanying drawings that the present invention has the following advantages:

[0049] 1. It is equipped with an independent adjustment device, which can select the appropriate adjustment spring distance according to the viscosity, type and model of the current mineral oil, so that the slow-release device has a suitable deformation stroke.

[0050] 2. The slow-release device adopts a double-spring design with unequal linear diameters. During the impact, it can achieve layer-by-layer deformation and slow release, which will not cause impact on the pipeline equipment connected to the overflow hole and avoid overflow in the overflow state.

[0051] 3. It is equipped with multiple sets of sealing structures. During use, there will be no improper overflow at the ends and joints, which will not affect the internal environment of the equipment and the circulation of mineral oil in the pipeline.

[0052] 4. The main valve core can simultaneously realize the blocking and conduction of the main inlet hole and the overflow hole, without the need for additional controllers, thus reducing the cost of use.

[0053] 5. The overall structure is simple, easy to manufacture and maintain, and meets the requirements of pre-installation positioning in conventional pipelines. It can be installed in the mineral oil lubrication pipelines of current equipment.

[0054] In addition, the indicated orientations or positional relationships described in the present invention are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or structure referred to must have a specific orientation or be operated in a specific orientation structure. Therefore, they cannot be understood as a limitation on the present invention.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An adjustable relief valve for mineral oil, comprising a valve body, one end of which is provided with an inlet hole, and one end of which is also provided with a plurality of overflow holes, characterized in that: A valve sleeve is installed in the valve body, and an adjusting device is installed at the other end of the valve sleeve. The adjusting device is movably connected to the main valve core through a slow-release device. In the standby state, the main valve core respectively blocks the inlet hole and the overflow hole. A slow-release channel is opened on the main valve core, and a piston is installed in the slow-release channel. The piston is in contact with the slow-release device. The slow-release device includes a main spring and a secondary spring. The main spring is sleeved on the inner side of the secondary spring, and the two are cocentrically distributed. The wire diameter of the main spring is smaller than the wire diameter of the secondary spring, and the wire diameter of the secondary spring is 1 to 1.8 mm.

2. The adjustable relief valve for mineral oil according to claim 1, characterized in that: A rear end limiting groove is provided on the outside of the valve body, a rear end sealing ring is provided in the rear end limiting groove, a middle end limiting groove is provided on the outside of the valve body, a middle end sealing ring is provided in the middle end limiting groove, a front end limiting groove is provided on the outside of the valve body, a front end sealing ring is provided in the front end limiting groove, and a retaining ring is provided on the outer cover of the front end sealing ring.

3. The adjustable relief valve for mineral oil according to claim 1, characterized in that: The adjusting device includes an adjusting screw threadedly connected to the valve sleeve, a nut is connected to the tail end of the adjusting screw, an adjusting spring is installed at the front end of the adjusting screw, a conical valve core is installed at the front end of the adjusting spring, the front end of the conical valve core extends out of the valve sleeve, a contact protrusion is distributed at the front end of the conical valve core, and docking grooves are distributed at the corresponding positions of the piston.

4. The adjustable relief valve for mineral oil according to claim 3, characterized in that: The outer side of the adjusting screw is sleeved with a retaining spring, and the inner side of the valve sleeve is provided with a receiving groove, and the retaining spring is located in the receiving groove.

5. The adjustable relief valve for mineral oil according to claim 3, characterized in that: An adjusting sealing ring is sleeved on the outer side of the adjusting screw, and the adjusting sealing ring is in contact with the valve sleeve.

6. The adjustable relief valve for mineral oil according to claim 3, characterized in that: A limiting convex strip is distributed on the rear end of the cone valve core, and the limiting convex strip is inserted into the regulating spring.

7. The adjustable relief valve for mineral oil according to claim 1, characterized in that: A first sealing ring is distributed at the rear end of the valve sleeve and contacts the valve body; a second sealing ring is distributed at the front end of the valve sleeve and a Gly ring is provided on the outer sleeve of the second sealing ring.

8. The adjustable relief valve for mineral oil according to claim 1, characterized in that: A blocking protrusion is distributed on the front end of the main valve core. In the standby state, the blocking protrusion abuts against the inlet hole, and the side wall of the main valve core abuts against the overflow hole.

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