Hydraulic control valve capable of acting in sequence

Abstract

The utility model relates to the technical field of hydraulic control, and discloses a hydraulic control valve capable of acting in sequence, which comprises a hydraulic control valve main body, the hydraulic control valve main body is provided with an oil delivery pipe and an oil inlet, and the oil inlet is arranged at one end of the oil delivery pipe. By optimizing the internal structure of the hydraulic control valve, the accurate sequential action of a plurality of hydraulic assemblies is realized, the operation efficiency and the response speed of a hydraulic system are improved, a complicated mechanical structure and manual intervention are not needed, and the operation difficulty and the maintenance cost are reduced; secondly, the hydraulic control valve is ingenious in design, sequential action of the first piston and the second piston is guaranteed through the plugging component, the problem that control is unstable easily due to the fact that a traditional sequence valve is complex in structure is effectively solved, the stability and reliability of a system are improved, and finally the hydraulic control valve is simple and compact in structure, easy to manufacture and maintain and low in cost. The production cost is reduced, and meanwhile, the durability and the adaptability are good.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic control technical field more particularly to a kind of hydraulic control valves of sequential action. BACKGROUND

[0002] In hydraulic system, it is the key to ensure system efficient operation to realize that multiple hydraulic components act according to specific order. Traditional control method often relies on complex mechanical structure and manual intervention, which not only leads to slow response speed, but also is difficult to achieve precise control. In addition, although traditional sequence valve can realize sequence control to some extent, its structure is complex, maintenance cost is high, and it is easily affected by pressure fluctuation, leading to unstable control. Therefore, in view of the above, the existing structure and defects are improved, a kind of hydraulic control valve of sequential action is provided, so as to achieve more practical value. SUMMARY

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model provides a kind of hydraulic control valve of sequential action to solve the problems existing in the above background art.

[0004] The utility model provides the following technical scheme: a kind of hydraulic control valve of sequential action, including hydraulic control valve main body, the hydraulic control valve main body is equipped with oil delivery pipe and oil inlet, the oil inlet is set to one end of the oil delivery pipe;The inside of the oil delivery pipe is divided into first stroke channel and second stroke channel, first piston is provided in the first stroke channel, second piston is provided in the second stroke channel;The inside of the oil delivery pipe is provided with plugging component, for preventing liquid oil from flowing into second stroke channel before first stroke channel completes action, the plugging component includes plugging rod, plugging plug, cover, connector and reset spring, the cover is fixedly installed on the outside of oil delivery pipe, the plugging rod is connected with plugging plug and is placed in the inside of oil delivery pipe, the tail end of the plugging rod extends to the cover in through slot, the connector is set to cover and is connected with plugging rod, the reset spring is connected between cover and connector, to maintain the initial position of plugging plug, ensure the sequential action of first piston and second piston.

[0005] Further, the second stroke channel is provided with upper convex part, and the first stroke channel is provided with lower convex part, for limiting the second piston and the first piston respectively, to ensure the stable movement of the piston in the respective stroke.

[0006] Further, a filter component is arranged at the oil inlet, the filter component includes a filter cartridge, the filter cartridge is connected with the oil inlet, and a filter element is arranged in the filter cartridge to filter the liquid oil entering the oil delivery pipe and prevent impurities from affecting the operation of the hydraulic control valve.

[0007] Further, the filter cartridge further comprises an openable sealing door, which facilitates the user to replace the filter element and improves the maintenance convenience.

[0008] Further, the filter cartridge is further provided with a locking assembly, which is used to lock the position of the sealing door when the sealing door is closed, so as to ensure the sealing and safety of the filter cartridge.

[0009] Further, the hydraulic control valve body is made of corrosion-resistant and high-strength material, so as to improve the durability and service life of the hydraulic control valve, and reduce the maintenance cost.

[0010] Further, the threaded connection or buckle connection is adopted between the plugging rod and the plugging plug, so as to facilitate the disassembly and replacement of the plugging plug when needed, and improve the maintenance efficiency and flexibility.

[0011] Further, the surfaces of the upper and lower protruding parts are provided with wear-resistant layers, so as to reduce the friction between the piston and the protruding part during movement, reduce wear, and prolong the service life of the hydraulic control valve.

[0012] The technical effects and advantages of the utility model are as follows:

[0013] 1. The utility model discloses an internal structure of hydraulic control valve is optimized, realizes accurate sequential action of multiple hydraulic components, improves the operation efficiency and response speed of hydraulic system, does not need complex mechanical structure and manual intervention, reduces the operation difficulty and maintenance cost, the hydraulic control valve designs cleverly, utilizes the plugging part to ensure the sequential action of the first piston and the second piston, effectively avoids the control instability problem of traditional sequence valve due to complex structure, improves the stability and reliability of system, finally, the structure of the hydraulic control valve is simple and compact, easy to manufacture and maintain, reduces production cost, and its good durability and adaptability.

[0014] 2. The utility model discloses an upper protruding part and a lower protruding part are additionally arranged, the movement track of the piston is further optimized, the stable movement of the piston in respective stroke is ensured, thereby the control precision and reliability of the hydraulic control valve are improved, which is particularly important for the hydraulic system needing high-precision control. Secondly, the addition of the filter part effectively filters the impurities entering the hydraulic system, protects the hydraulic component from damage, prolongs the service life of the hydraulic system, and improves the cleanliness and operation efficiency of the system. Furthermore, the hydraulic control valve body is made of corrosion-resistant and high-strength material, which enhances the durability and fatigue resistance of the valve body, so that the hydraulic control valve can stably operate in a harsh working environment, and the failure rate caused by material problems is reduced. Finally, the easy-to-disassemble connection mode between the plugging rod and the plugging plug, and the application of the wear-resistant layer not only improve the maintenance convenience, but also reduce the wear, and further prolong the service life of the hydraulic control valve. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure three-dimensional partial section schematic view of the utility model.

[0016] Figure 2 It is a structure three-dimensional partial section schematic view of the utility model in use state.

[0017] Figure 3 It is a structure three-dimensional schematic view of the utility model.

[0018] Figure 4 It is a structure three-dimensional schematic view of the utility model's filtering component.

[0019] In the figure: 100, hydraulic control valve main body;110, oil delivery pipe;111, oil inlet;112, first stroke channel;113, first piston;114, second stroke channel;115, second piston;116, plugging rod;117, plugging plug;118, outer cover;119, connector;120, reset spring;121, upper protruding portion;122, lower protruding portion;123, filter cartridge;124, filter element;125, sealing door;126, locking assembly. DETAILED DESCRIPTION

[0020] The technical solutions in the utility model will be described clearly and completely below in combination with the drawings in the utility model.

[0021] Embodiment one: the core of the utility model is to provide a hydraulic control valve capable of ensuring sequential action, which is particularly suitable for being applied to a hydraulic system needing to accurately control liquid flow direction and pressure change. The hydraulic control valve main body 100 serves as the basis of the whole device.

[0022] The oil delivery pipe 110 serves as the transmission channel of hydraulic oil, which is ingeniously divided into two independent stroke channels, i.e. the first stroke channel 112 and the second stroke channel 114. This design allows the hydraulic control valve to realize different liquid flow paths and pressure regulation by controlling the piston movement in the two channels in different operation stages. The oil inlet 111 is arranged at one end of the oil delivery pipe 110 and is the inlet of the hydraulic oil into the valve body, and the position selection thereof facilitates the connection with the oil supply pipeline of the hydraulic system, thereby ensuring smooth and efficient oil flow.

[0023] The first piston 113 and the second piston 115 are respectively installed in the first stroke channel 112 and the second stroke channel 114, and their function is to move in the respective channels according to the control signal, thereby changing the opening and closing state of the channels and adjusting the flow direction and pressure of the hydraulic oil. The material and sealing design of the piston are crucial, which not only needs to ensure good sealing performance to prevent hydraulic oil leakage, but also needs to have sufficient strength and wear resistance to cope with the challenges brought by high pressure and frequent operation.

[0024] To ensure the sequential action of the two stroke channels, i.e. the action of the first stroke channel 112 is completed before allowing the second stroke channel 114 to act, the utility model ingeniously introduces a plugging component. The component is composed of a plugging rod 116, a plugging plug 117, an outer cover 118, a connecting head 119 and a return spring 120. The plugging plug 117 is located inside the oil delivery pipe 110 and is connected to the connecting head 119 in the outer cover 118 through the plugging rod 116. The return spring 120 provides the necessary pre-tightening force to keep the plugging plug 117 in the initial position, i.e. to block the entrance of the second stroke channel 114. When the first piston 113 completes the action and pushes the plugging rod 116 to move, the plugging plug 117 moves accordingly, releasing the second stroke channel 114 and allowing hydraulic oil to enter and drive the second piston 115 to act. This design not only ensures the accuracy of the action, but also improves the reliability and stability of the system. Embodiment

[0025] In embodiment two, in order to further improve the stability and accuracy of piston movement, an upper protruding part 121 is added in the second stroke channel 114 and a lower protruding part 122 is added in the first stroke channel 112. These protruding parts act as position limiting devices for piston movement, which can effectively prevent the piston from moving excessively under high speed or high pressure, reducing the impact and wear on the valve body structure, while also ensuring the accurate positioning of the piston in each stroke, improving the accuracy and reliability of hydraulic control.

[0026] Considering the negative impact of impurities that may exist in hydraulic oil on the performance of the hydraulic control valve, embodiment two adds a filter component at the oil inlet 111. The component is composed of a filter cartridge 123 and a filter core 124. The filter core 124 can efficiently filter out solid particles and contaminants in the hydraulic oil, protecting the hydraulic control valve from impurities and prolonging its service life. In addition, the filter cartridge 123 is also designed with an openable sealing door 125, which facilitates users to regularly check and replace the filter core 124, improving the convenience and efficiency of maintenance. The addition of the locking assembly 126 provides additional safety when the sealing door 125 is closed, ensuring the sealing of the filter cartridge 123 and the stability of the overall structure.

[0027] The hydraulic control valve body 100 is made of corrosion-resistant and high-strength materials, such as stainless steel or special alloys, to adapt to harsh working environments such as high temperature, high pressure, corrosive media, etc. This material selection not only improves the durability and service life of the valve body, but also reduces the maintenance cost caused by material corrosion or fatigue.

[0028] The connection between the blocking rod 116 and the blocking plug 117 is also optimized, using a threaded connection or a snap connection, which ensures the firmness of the connection and facilitates quick disassembly and replacement of the blocking plug 117 when needed, improving the efficiency and flexibility of maintenance. This design allows users to take quick action when facing failures or maintenance needs, reducing downtime and improving production efficiency.

[0029] The surfaces of the upper and lower protrusions 121 and 122 are provided with wear-resistant layers to further reduce friction between the piston and the protrusions during movement, reduce wear, and prolong the overall service life of the hydraulic control valve. The wear-resistant layer can be made of hard alloy, ceramic, or high polymer composite material, which has excellent wear resistance and self-lubricating properties, can effectively reduce the friction coefficient, reduce energy loss, and improve the operating efficiency of the system.

[0030] Finally, it should be noted that in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be broadly understood, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change.

[0031] Secondly: the utility model discloses the embodiment of the drawings only relates to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0032] Finally: the above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A sequenced hydraulic control valve comprising a hydraulic control valve body (100), characterized in that: The hydraulic control valve body (100) is provided with an oil delivery pipe (110) and an oil inlet (111), the oil inlet (111) is arranged at one end of the oil delivery pipe (110); the oil delivery pipe (110) is divided into a first stroke channel (112) and a second stroke channel (114) inside, the first stroke channel (112) is provided with a first piston (113), and the second stroke channel (114) is provided with a second piston (115); the oil delivery pipe (110) is provided with a blocking component inside, which is used to prevent liquid oil from flowing into the second stroke channel (114) before the first stroke channel (112) completes the action, the blocking component includes a blocking rod (116), a blocking plug (117), an outer cover (118), a connecting head (119) and a reset spring (120), the outer cover (118) is fixedly installed outside the oil delivery pipe (110), the blocking rod (116) is connected with the blocking plug (117) and placed inside the oil delivery pipe (110), the end of the blocking rod (116) extends into the outer cover (118) through a through slot, the connecting head (119) is arranged in the outer cover (118) and connected with the blocking rod (116), and the reset spring (120) is connected between the outer cover (118) and the connecting head (119) to maintain the initial position of the blocking plug (117) and ensure the sequential action of the first piston (113) and the second piston (115).

2. A sequenced action hydraulic control valve according to claim 1, wherein: The second stroke channel (114) is provided with an upper protruding portion (121), and the first stroke channel (112) is provided with a lower protruding portion (122), which are used for limiting the second piston (115) and the first piston (113) respectively.

3. A sequenced action hydraulic control valve according to claim 1, wherein: The oil inlet (111) is provided with a filtering component, the filtering component includes a filter cartridge (123), the filter cartridge (123) is connected with the oil inlet (111), and the filter cartridge (123) is provided with a filter core (124) inside, which is used for filtering liquid oil entering the oil delivery pipe (110).

4. A sequenced action hydraulic control valve according to claim 3, wherein: The filter cartridge (123) further includes an openable sealing door (125), which facilitates the user to replace the filter core (124).

5. A sequenced action hydraulic control valve according to claim 4, wherein: The filter cartridge (123) is further provided with a locking assembly (126), which is used to lock the position of the sealing door (125) when the sealing door (125) is closed.

6. A sequenced hydraulic control valve according to any one of claims 1-5, characterized in that: The hydraulic control valve body (100) is made of a corrosion-resistant and high-strength material.

7. A sequenced hydraulic control valve according to claim 1, characterized in that: The blocking rod (116) and the blocking plug (117) are connected by threads or buckles.

8. A sequenced hydraulic control valve according to claim 2, characterized in that: The surfaces of the upper protruding portion (121) and the lower protruding portion (122) are provided with wear-resistant layers.

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