One-way valve of slide valve type hydraulic system

Abstract

The utility model discloses a one-way valve of a slide valve type hydraulic system. The first fluid channel and the second fluid channel are arranged in the valve block in a spaced mode; the first fluid channel comprises a first fluid channel inlet and a first fluid channel outlet; the second fluid channel comprises a second fluid channel inlet and a second fluid channel outlet; the valve core comprises a telescopic device; the valve element is movably arranged in the valve block and located at the communicating position of the first fluid channel and the second fluid channel, the pressure borne by the valve element is adjusted through the telescopic device so that the valve element can move, and the first fluid channel and the second fluid channel can be communicated or separated. The one-way valve has the advantages of being capable of being researched and developed independently, low in use cost, capable of conducting pressure adjustment on the one-way valve according to use working conditions, small in hydraulic impact on a system, high in reliability and the like.

Description

Technical Field

[0001] The utility model relates to the field of one-way valves, in particular to a slide valve type one-way valve for a hydraulic system. Background Art

[0002] In recent years, with the rapid development of the real industry, the role of hydraulic systems in the development of the real industry has become increasingly important, and the lubrication and cooling system, as an important component of the hydraulic system, plays a role in maintaining the hydraulic system in normal working condition for a long time. At present, most lubrication and cooling systems use temperature control valves to control the flow direction of hydraulic media, but temperature control valves are completely imported and have disadvantages such as high price, short life, high failure rate, and limited operating conditions.

[0003] The utility model proposes a slide valve type hydraulic system check valve, which can be independently developed and manufactured, with low use cost; and can be used under various working conditions. In actual use, a certain range of pressure can be adjusted according to use requirements, and its practicality is stronger. Utility Model Content

[0004] The utility model aims to provide a slide valve type hydraulic system one-way valve to overcome the problems of high use cost, limited use conditions, low reliability and the like existing in the existing devices.

[0005] In order to achieve the above object, the utility model provides a slide valve type hydraulic system one-way valve, comprising:

[0006] Valve block;

[0007] A first fluid channel and a second fluid channel are arranged inside the valve block in a spaced relationship; the first fluid channel comprises a first fluid channel inlet and a first fluid channel outlet; the second fluid channel comprises a second fluid channel inlet and a second fluid channel outlet;

[0008] The valve core includes a retractable device; the valve core is movably arranged inside the valve block and is located at the connecting point of the first fluid channel and the second fluid channel. The pressure on the valve core is adjusted by the retractable device to move the valve core to penetrate / block the first fluid channel and the second fluid channel.

[0009] Optionally, the valve block comprises:

[0010] A valve block port, located at the connection between the first fluid channel and the second fluid channel, one end of which is connected to the outlet of the first fluid channel, and the other end is connected to the inlet of the second fluid channel;

[0011] The end opening is communicated with the second fluid channel and is arranged opposite to the valve block closing end. The retractable device can be replaced through the end opening.

[0012] Optionally, a mounting plate is provided at the end opening, and the mounting plate is detachably connected to the valve block to seal the end opening.

[0013] Optionally, the valve core is hollow inside, and a partition block with a conical surface is provided inside the valve core to separate the valve core into a first sleeve and a second sleeve that are coaxial and non-connected;

[0014] The first sleeve is inserted into the valve block opening and communicates with the first fluid channel, the second sleeve is arranged in the second fluid channel, and the conical surface of the partition block is arranged in the second fluid channel and close to the valve block opening;

[0015] The diameter of the first sleeve matches the diameter of the valve block opening and is smaller than the diameter of the second sleeve.

[0016] Optionally, a plurality of communication ports are provided on the wall of the first sleeve;

[0017] When the one-way valve is opened, the valve core moves toward the mounting plate, and the end of the communication port close to the second fluid channel extends out of the valve block closing port to form an overflow port, which can guide the liquid in the first fluid channel into the second fluid channel;

[0018] When the one-way valve is closed, the valve core moves toward the first fluid channel, the end of the communication port close to the second fluid channel is covered by the valve block closing port, the overflow port is closed, and the first fluid channel and the second fluid channel are isolated.

[0019] Optionally, the retractable device is disposed in the second sleeve and comprises:

[0020] Springs and adjustable spacers;

[0021] One end of the adjustable gasket is arranged close to the partition block, and the other end is arranged close to the spring;

[0022] One end of the spring abuts against the adjustable gasket, and the other end is mounted on the mounting plate.

[0023] Optionally, a plurality of air flow holes are provided on the outer wall of the second sleeve to reduce air resistance when the valve core moves.

[0024] Optionally, a protrusion is provided on the mounting plate, and the protrusion is a cylindrical structure, the outer diameter of the cylindrical structure matches the inner diameter of the spring, and is used to sleeve one end of the spring;

[0025] The mounting plate is also provided with an annular groove, which is arranged at the root of the junction between the mounting plate and the protruding portion. The inner cylindrical surface of the annular groove matches the outer diameter surface of the spring and is used to clamp one end of the sleeved spring.

[0026] Optionally, an annular sealing ring is provided on the mounting plate and is arranged at the contact position between the mounting plate and the valve block.

[0027] Optionally, the adjustable gasket is a plurality of gaskets of different thicknesses, and the gasket of appropriate thickness can be replaced according to the requirements of the hydraulic environment for the valve core pressure.

[0028] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0029] 1. The slide valve type hydraulic system check valve provided by the utility model can be independently developed and manufactured, thus avoiding the problem of high use cost caused by reliance on imports;

[0030] 2. The slide valve type hydraulic system check valve provided by the utility model can adjust the pressure within a certain range according to the actual use requirements and is suitable for various working conditions;

[0031] 3. The utility model provides a slide valve type hydraulic system one-way valve, which opens smoothly by setting a cylindrical valve core, has little impact on the system hydraulic pressure, and has high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a slide valve type hydraulic system one-way valve in a closed state of the utility model;

[0033] Figure 2 The utility model is a structural schematic diagram of a slide valve type hydraulic system one-way valve in an open state. DETAILED DESCRIPTION

[0034] The following will be combined with the attached Figures 1-2 , the technical content, structural features, objectives and effects of the utility model are described in detail through preferred embodiments.

[0035] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the implementation methods of the utility model, and are not used to limit the conditions for the implementation of the utility model. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed by the utility model without affecting the efficacy and purpose that can be achieved by the utility model.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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; 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.

[0038] The utility model provides a slide valve type hydraulic system one-way valve, such as Figure 1 As shown, the hydraulic system one-way valve includes: a valve block 1; a first fluid channel 7 and a second fluid channel 9, which are arranged inside the valve block 1 at intervals, the first fluid channel 7 serves as an inflow channel for liquid, and the second fluid channel 9 serves as an outflow channel for liquid; a valve core 2, including a retractable device, the valve core 2 is movably arranged inside the valve block 1, and is located at the connecting point between the first fluid channel 7 and the second fluid channel 9, and the connection / isolation of the first fluid channel 7 and the second fluid channel 9 is achieved by moving the position of the valve core 2 relative to the first fluid channel 7 and the second fluid channel 9.

[0039] Among them, the first fluid channel 7 includes two ports, namely the first fluid channel inlet and the first fluid channel outlet; the first fluid channel inlet is in direct contact with the liquid environment; the second fluid channel 9 also includes two ports, namely the second fluid channel inlet and the second fluid channel outlet; the second fluid channel inlet is connected to the first fluid channel outlet, and the second fluid channel outlet is in direct contact with the liquid environment.

[0040] Furthermore, a valve block port is provided inside the valve block 1 and at the connection point between the first fluid channel 7 and the second fluid channel 9. The valve block port has a certain length along the direction connecting the first fluid channel 7 and the second fluid channel 9; one end of the valve block port is connected to the outlet of the first fluid channel, and the other end is connected to the inlet of the second fluid channel. The valve block port is the connection point between the first fluid channel 7 and the second fluid channel 9.

[0041] Furthermore, the valve block 1 is provided with an end opening 15, which is in communication with the second fluid channel 9 and is arranged opposite to the valve block closing port. A mounting plate 6 is provided at the end opening 15; the mounting plate 6 is detachably connected to the valve block 1, and is used to facilitate the replacement of the telescopic device on the one hand, and to seal the end opening 15 after the replacement of the telescopic device is completed on the other hand.

[0042] Specifically, the mounting plate 6 is provided with a plurality of through holes, and the mounting plate 6 is detachably fixed to the end opening 15 of the valve block 1 by bolt connection, so as to seal the valve block 1 .

[0043] The valve core 2 is hollow inside and is separated by a partition block with a conical surface 13, forming a coaxial but unconnected first sleeve 8 and a second sleeve 10; the first sleeve 8 is inserted into the valve block port and is connected to the first fluid channel 7, the second sleeve 10 is arranged in the second fluid channel 9, and the conical surface 13 of the partition block is arranged in the second fluid channel 9 and close to the valve block port. The diameter of the first sleeve 8 matches the diameter of the valve block port and is smaller than the diameter of the second sleeve 10, and the transition of the two sleeves in structural connection is achieved through the partition block.

[0044] Further, if Figure 2 As shown, a plurality of connecting ports 11 are provided on the wall of the first sleeve 8, and the length of the connecting ports 11 is slightly larger than the length of the valve block closing port; when the valve core 2 moves along the second fluid channel 9 toward the mounting plate 6, the side of the connecting port 11 close to the second fluid channel extends out from the edge of the valve block closing port to form an overflow port 14, so that the liquid flowing into the first fluid channel 7 can flow to the second fluid channel 9 through the overflow port 14 on the connecting port 11, which is the open state of the valve core 2.

[0045] Furthermore, since the cylindrical surface of the first sleeve 8 is in close contact with the side wall of the valve block closure between the first fluid channel 7 and the second fluid channel 9, and due to the setting of the conical surface 13 of the partition block, when the valve core 2 moves along the second fluid channel 9 toward the first fluid channel 7 until it cannot move, the conical surface 13 of the partition block is blocked by the valve block closure, and the side of all the connecting ports 11 close to the second fluid channel is covered by the side wall of the valve block closure, so that the above-mentioned overflow port 14 is closed, and surface contact is formed between the side wall of the first sleeve 8 and the side wall of the valve block closure, and the conical surface 13 of the partition block forms a line contact with the valve block closure near the entrance of the second fluid channel, so that the liquid cannot flow from the first fluid channel 7 to the second fluid channel 9, that is, the valve block 1 and the valve core 2 separate the first fluid channel 7 and the second fluid channel 9 in a cylindrical surface seal and a line seal, which is the closed state of the valve core 2.

[0046] Among them, the retractable device is arranged in the second sleeve 10 of the valve core 2, and the retractable device includes: a spring 4 and an adjustable gasket 3; one end of the adjustable gasket 3 is set close to the partition block, and the other end is close to the spring 4; one end of the spring 4 is against the adjustable gasket 3, and the other end is installed on the mounting plate 6.

[0047] The mounting plate 6 is also provided with a protrusion protruding toward the valve block closing direction, so that the cross section of the mounting plate 6 is a T-shaped structure. The protrusion is a cylindrical structure, and the outer diameter of the protrusion matches the inner diameter of the spring 4, which is used to sleeve the end of the spring 4 close to the mounting plate 6 on the protrusion. Further, the mounting plate 6 is also provided with an annular groove, which is provided at the root of the junction of the mounting plate (6) and the protrusion, and the inner cylindrical surface of the annular groove matches the outer diameter surface of the spring 4, which is used to clamp the end of the spring 4 close to the mounting plate 6, so that the end of the spring 4 close to the mounting plate 6 is fixedly connected to the mounting plate 6.

[0048] Furthermore, the inner diameter of the second sleeve 10 matches the outer diameter of the spring 4 , so that the spring 4 can be inserted into the second sleeve 10 and abut against the adjustable gasket 3 located in the second sleeve 10 .

[0049] Among them, the movable setting of the valve core 2 means that it can move toward the first fluid channel 7 and toward the mounting plate 6; the spring 4 is squeezed by the adjustable gasket 3 in the retractable device, and the elastic force generated by the spring 4 acts on the valve core 2, so that the valve core 2 continues to move toward the first fluid channel 7 until the overflow port 14 is closed, and the conical surface 13 of the partition block is firmly against the valve block close to the second fluid channel 9, so the first fluid channel 7 and the second fluid channel 9 are isolated; but as the liquid continues to flow into the first fluid channel 7, hydraulic pressure is generated. When the hydraulic force is greater than the elastic force of the spring 4, the valve core 2 begins to move toward the mounting plate 6, the overflow port 14 opens, and the liquid gradually enters the second fluid channel 9 from the first fluid channel 7, so the first fluid channel 7 and the second fluid channel 9 are connected.

[0050] Furthermore, the adjustable gasket 3 can change the elastic force generated by the spring 4 by replacing gaskets of different thicknesses, thereby adjusting the pressure on the valve core 2. When the adjustable gasket 3 needs to be replaced, the mounting plate 6 can be separated from the end 15 of the valve block 1 by removing the bolts on the mounting plate 6, and the spring 4 can be taken out, and then the adjustable gasket 3 of different thicknesses can be manually replaced. In a specific usage scenario, before installing the spring 4, the relationship between the compression range and the elastic force of the spring 4 can be measured first, and then the thickness of the adjustable gasket 3 can be changed according to the required pressure to compress the spring 4, so that the one-way valve can achieve the effect of opening / closing under different hydraulic environments.

[0051] Specifically, the slide valve type hydraulic system check valve of the present embodiment is used as follows: the first sleeve 8 of the valve core 2 is inserted and set in the valve block, then one end of the spring 4 is fixedly set on the protrusion of the mounting plate 6, the adjustable gasket 3 is set in the second sleeve 10 and abuts against the partition block, the spring 4 is set in the second sleeve 10 and abuts against the adjustable gasket 3, and the mounting plate 6 is installed on the end 15 of the valve block 1. The adjustable gasket 3 squeezes the spring 4, and the elastic force generated by the spring 4 acts on the valve core 2, and the valve core 2 moves toward the first fluid channel 7 until the overflow port 14 is closed, the conical surface 13 of the partition block is close to the valve block 1, and the check valve is in an inactive state; as the liquid continuously enters the first fluid channel 7 from the inlet of the first fluid channel, the hydraulic pressure continuously rises and squeezes the spring 4 to produce deformation. When the liquid pressure in the first fluid channel 7 is greater than the force generated by the existing deformation of the spring 4, the conical surface 13 of the partition block that originally abutted against the valve block 1 gradually separates, and the entire valve core 2 moves toward the mounting plate 6. The one-way valve moves in the direction of the mounting plate 6, the overflow port 14 opens, the liquid enters the second fluid channel 9 from the first fluid channel 7 along the overflow port 14 in the first sleeve 8 on the valve core 2, and then flows out from the outlet of the second fluid channel, and the one-way valve is activated; and when the liquid completely enters the second fluid channel 9, due to the transition structure of the conical surface 13 of the valve core 2 set here, the liquid pressure generated cannot make the valve core 2 move toward the mounting plate 6, so the liquid entering the second fluid channel 9 cannot flow back into the first fluid channel 7, so the one-way valve can well realize one-way flow.

[0052] Furthermore, the mounting plate 6 is provided with an annular sealing ring 5, which is arranged at the contact position between the mounting plate 6 and the end opening 15; specifically, in order to prevent liquid from leaking on the contact surface between the valve block 1 and the mounting plate 6, the mounting plate 6 is provided with a mounting groove at the contact position with the valve block 1, and the annular sealing ring 5 is embedded therein. Since the mounting plate 6 and the valve block 1 are fixedly connected by bolts, the annular sealing ring 5 is compacted on the contact surface between the valve block 1 and the mounting plate 6, which ensures a good sealing effect.

[0053] Furthermore, a plurality of air flow holes 12 are provided on the second sleeve 10 in the valve core 2. When the liquid in the first fluid channel 7 squeezes the valve core 2 and compresses the spring 4, the air flow holes 12 can discharge the air in the second sleeve 10, so that the valve core 2 is not affected by air resistance when moving toward the side of the mounting plate 6.

[0054] The slide valve type hydraulic system check valve provided by the utility model can also select the spring 4 according to the specific use conditions, liquid type, required pressure adjustment range and accuracy. When it is out of use, the elastic force of the spring 4 is adjusted by changing the thickness of the adjustable gasket 3, thereby adjusting the pressure of the valve core 2. Therefore, the utility model also provides a pressure-adjustable slide valve type hydraulic system check valve.

[0055] In summary, the slide valve type hydraulic system check valve provided by the utility model has the advantages of low cost, pressure adjustment according to specific working conditions, high reliability, etc., and can partially replace the existing temperature control valve in the hydraulic system.

[0056] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be defined by the attached claims.

Claims

1. A slide valve type hydraulic system check valve, characterized in that: Include: Valve block (1); A first fluid channel (7) and a second fluid channel (9) are arranged in a spaced relationship inside the valve block (1); the first fluid channel (7) comprises a first fluid channel inlet and a first fluid channel outlet; the second fluid channel (9) comprises a second fluid channel inlet and a second fluid channel outlet; A valve core (2) comprises a retractable device; the valve core (2) is movably arranged inside the valve block (1) and is located at the connection point between the first fluid channel (7) and the second fluid channel (9); the pressure applied to the valve core (2) is adjusted by the retractable device to move the valve core (2) so as to connect / block the first fluid channel (7) and the second fluid channel (9).

2. The slide valve type hydraulic system check valve according to claim 1, characterized in that: The valve block (1) comprises: A valve block port located at the connection point between the first fluid channel (7) and the second fluid channel (9), one end of which is connected to the outlet of the first fluid channel and the other end of which is connected to the inlet of the second fluid channel; The end opening (15) is communicated with the second fluid channel (9) and is arranged opposite to the valve block closing port. The retractable device can be replaced through the end opening (15).

3. The slide valve type hydraulic system check valve according to claim 2, characterized in that: A mounting plate (6) is provided at the end opening (15), and the mounting plate (6) is detachably connected to the valve block (1) to seal the end opening (15).

4. The slide valve type hydraulic system check valve according to claim 3, characterized in that: The valve core (2) is hollow inside, and a partition block with a conical surface (13) is arranged inside the valve core (2) to separate the valve core (2) into a first sleeve (8) and a second sleeve (10) that are coaxial and non-communicating; The first sleeve (8) is inserted into the valve block opening and communicates with the first fluid channel (7); the second sleeve (10) is arranged in the second fluid channel (9); the conical surface (13) of the partition block is arranged in the second fluid channel (9) and is close to the valve block opening; The diameter of the first sleeve (8) matches the diameter of the valve block opening and is smaller than the diameter of the second sleeve (10).

5. The slide valve type hydraulic system check valve according to claim 4, characterized in that: The first sleeve (8) is provided with a plurality of communication openings (11) on its wall; When the one-way valve is opened, the valve core (2) moves toward the mounting plate (6), and the end of the communication port (11) close to the second fluid channel (9) extends out of the valve block closing port to form an overflow port (14). The overflow port (14) can guide the liquid in the first fluid channel (7) into the second fluid channel (9); When the one-way valve is closed, the valve core (2) moves in the direction of the first fluid channel (7), the end of the communication port (11) close to the second fluid channel (9) is covered by the valve block closing port, the overflow port (14) is closed, and the first fluid channel (7) and the second fluid channel (9) are isolated.

6. The slide valve type hydraulic system check valve according to claim 4, characterized in that: The retractable device is arranged in the second sleeve (10) and comprises: Spring (4) and adjustable spacer (3); One end of the adjustable gasket (3) is arranged close to the partition block, and the other end is arranged close to the spring (4); One end of the spring (4) abuts against the adjustable gasket (3), and the other end is mounted on the mounting plate (6).

7. The slide valve type hydraulic system check valve according to claim 6, characterized in that: A plurality of air flow holes (12) are provided on the outer wall of the second sleeve (10) for reducing the air resistance when the valve core (2) moves.

8. The slide valve type hydraulic system check valve according to claim 6, characterized in that: The mounting plate (6) is provided with a protrusion, which is a cylindrical structure, the outer diameter of which matches the inner diameter of the spring (4), and is used to sleeve one end of the spring (4); The mounting plate (6) is also provided with an annular groove, which is arranged at the root of the junction between the mounting plate (6) and the protruding portion. The inner cylindrical surface of the annular groove matches the outer diameter surface of the spring (4) and is used to clamp one end of the sleeved spring (4).

9. The slide valve type hydraulic system check valve according to claim 3, characterized in that: An annular sealing ring (5) is provided on the mounting plate (6) and is arranged at the contact position between the mounting plate (6) and the valve block (1).

10. The slide valve type hydraulic system check valve according to claim 6, characterized in that: The adjustable gasket (3) is a plurality of gaskets of different thicknesses, and a gasket of appropriate thickness can be replaced according to the requirements of the hydraulic environment on the valve core pressure.

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