A hydraulic servo valve that accurately controls the amount of oil in and out

Abstract

This utility model provides a hydraulic servo valve for precise control of oil inflow and outflow, including: a servo valve body, an electromagnet structure mounting bracket, an electromagnet structure, and an oil inflow and outflow control structure. The servo valve body has a servo valve pipe at its upper center for guiding oil flow. Compared with existing technologies, this utility model has the following advantages: By adding a servo valve body, an electromagnet structure, and an oil inflow and outflow control structure, and with two sets of electromagnet structures at both ends, the electromagnets can drive the central tube to move left and right during both oil flow and blockage, increasing the speed of the central tube's left and right movement. Furthermore, each end of the central tube has an auxiliary control spring, separately installed from the central tube, which can compress and accumulate elastic potential energy to assist in rebound, improving the accuracy of oil inflow and outflow control. Adding a servo valve body and an electromagnet structure mounting bracket facilitates the assembly and disassembly of the servo valve body and the electromagnet structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic servo valves, and particularly relates to a hydraulic servo valve for accurately controlling inlet and outlet oil volumes. Background Art

[0002] The hydraulic servo valve is a hydraulic control valve whose output and input are in a certain functional relationship and can respond quickly. It is an important component of the hydraulic servo system. In the new energy industry, roller presses are often used to carry out the pressing, winding, coating, slitting and other processing operations of the corresponding raw materials. Therefore, roller presses are one of the indispensable key equipment in the new energy industry chain. Most of the control systems of roller presses use servo hydraulic control systems to improve the precise control of the oil, and then achieve precise control of the corresponding actions of the roller press. The hydraulic servo valve plays a key role in the servo hydraulic system. However, the hydraulic servo valve used in the roller press in the common new energy industry is structured to achieve the in and out control of the oil through a single electromagnet structure plus springs set at both ends. Although it can achieve the effect of fast response and fast action control, the compression or stretching actions of the springs at both ends are opposite. When the spring at one end of the electromagnet structure rebounds, the spring at the other end will produce a tensile deformation force, which will cause a certain resistance to it, causing a certain delay in the suspension of the oil conduction control, and thus affecting its precise control.

[0003] In summary, the hydraulic servo valve that uses a single electromagnet structure plus springs at both ends to control the inlet and outlet of oil has some problems in use, so it is hoped that a new structure will be proposed to solve the above technical problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a hydraulic servo valve for accurately controlling the inlet and outlet oil volumes, so as to solve the problems raised in the above-mentioned background technology.

[0005] The utility model is realized through the following technical scheme: a hydraulic servo valve for accurately controlling the amount of oil in and out, comprising: a servo valve body, an electromagnet structure mounting frame, an electromagnet structure and an oil in and out control structure, wherein the servo valve body has an upper center in the middle of its internal composition, a servo valve pipeline for guiding the oil, oil in and out control structure conduits are arranged at both left and right ends of the servo valve pipeline, an oil in and out control structure conduit is arranged inside the oil in and out control structure conduit for accurately controlling the oil in and out, the oil in and out control structure is composed of a center tube, an inner sealing ring, an outer sealing ring, an auxiliary control spring and a spring seat, a group of electromagnet structure mounting frames for mounting the electromagnet structure are arranged at both front and rear ends of the left and right sides of the servo valve pipeline, and an electromagnet structure for controlling the movement of the oil in and out control structure is arranged between the front and rear two groups of the electromagnet structure mounting frames.

[0006] As a preferred embodiment, an electromagnet is provided on the inner side of the electromagnet structure, the electromagnet structure is electrically connected to an external power supply through a wire, and the left and right groups of electromagnet structures are controlled separately, and a group of docking seats for docking with the inner side of the electromagnet structure are provided on both sides of the oil inlet and outlet control structure conduit. The external power supply energizes the electromagnet through the wire, so that it attracts the central tube, thereby controlling the left and right movement of the central tube.

[0007] As a preferred embodiment, an oil guide hole for oil transmission is vertically penetrated through the center of the left side of the center tube, and a group of inner sealing rings for preventing oil from spilling are provided at both ends of the outer side of the center tube near the center of the center tube.

[0008] As a preferred embodiment, a group of outer sealing rings for preventing oil from spilling are provided on the right side of the inner sealing ring at the right end and on the left side of the inner sealing ring at the left end, and a group of auxiliary control springs for assisting the left and right movement of the center tube are provided on both ends of the center tube. The inner sealing ring can seal both ends of the oil when it passes through the oil guide hole, and the outer sealing ring can seal both ends when the oil is prohibited from passing through the oil guide hole.

[0009] As a preferred embodiment, the auxiliary control spring is provided with a spring seat for installing the auxiliary control spring at one end away from the center of the central tube. The auxiliary control spring and the spring seat are an integrated structure. The auxiliary control spring and the central tube are not connected. The auxiliary control spring and the spring seat are integrally arranged so that the auxiliary control spring can assist the central tube in rebounding force.

[0010] As a preferred embodiment, a group of flower-shaped mounting plates for mounting an electromagnet structure mounting frame are provided on the outer sides of the front and rear ends of the servo valve pipeline. The flower-shaped mounting plates are connected and fixed to the electromagnet structure mounting frame by long bolts. The flower-shaped mounting plates can be connected and fixed to the electromagnet structure mounting frame by bolts, thereby enabling the electromagnet structure mounting frame to be conveniently disassembled and assembled.

[0011] As a preferred embodiment, the electromagnet structure and the electromagnet structure mounting frame are connected and fixed by short bolts, a servo valve mounting seat is provided under the servo valve pipeline, and mounting plates for facilitating the installation of the servo valve are provided at the lower ends of the left and right sides of the servo valve mounting seat, and a mounting hole is formed by vertically penetrating the upper surface of the mounting plate.

[0012] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by adding a servo valve body, an electromagnet structure and an oil inlet and outlet control structure, two groups of electromagnet structures are arranged at both ends, and the electromagnet can be used to drive the center tube to move left and right during the conduction and blocking of the oil, thereby increasing the speed of the left and right movement of the center tube, and a group of auxiliary control springs are arranged at both ends of the center tube and are separated from the center tube, which can compress and accumulate elastic potential energy to assist in rebound, thereby improving the accuracy of oil inlet and outlet control, and by adding a servo valve body and an electromagnet structure mounting frame, the servo valve body and the electromagnet structure can be easily disassembled and assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 The utility model is a schematic diagram of the overall structure of the upper side of a hydraulic servo valve for accurately controlling the inlet and outlet oil volumes.

[0015] Figure 2 This is a schematic diagram of the overall structure of the lower side of a hydraulic servo valve for accurately controlling the inlet and outlet oil volumes of the utility model.

[0016] Figure 3 The utility model is a partial structural schematic diagram of a servo valve body in a hydraulic servo valve for accurately controlling the inlet and outlet oil amounts.

[0017] Figure 4 The utility model is a partial structural schematic diagram of an oil inlet and outlet control structure in a hydraulic servo valve for accurately controlling the inlet and outlet oil amounts.

[0018] In the figure, 100-servo valve body, 101-servo valve mounting seat, 102-mounting plate, 103-mounting hole, 104-servo valve pipeline, 105-oil inlet and outlet control structure conduit, 106-docking seat, 107-flower-shaped mounting plate;

[0019] 201-center tube, 202-oil guide hole, 203-sealing ring, 204-outer sealing ring, 205-auxiliary control spring, 206-spring seat;

[0020] 300-electromagnet structure;

[0021] 400-Electromagnet structure mounting bracket. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 The utility model provides a technical solution: a hydraulic servo valve for accurately controlling the amount of oil in and out, comprising: a servo valve body 100, an oil in and out control structure, an electromagnet structure 300 and an electromagnet structure mounting frame 400, wherein the servo valve body 100 has a servo valve pipeline 104 for guiding the oil in the center of the upper end thereof;

[0024] Both left and right ends of the servo valve pipeline 104 are provided with oil inlet and outlet control structure conduits 105, and the inner side of the oil inlet and outlet control structure conduits 105 is provided with an oil inlet and outlet control structure for accurately controlling the oil inlet and outlet;

[0025] The oil inlet and outlet control structure is composed of a central tube 201, an inner sealing ring 203, an outer sealing ring 204, an auxiliary control spring 205 and a spring seat 206. A group of electromagnet structure mounting frames 400 for mounting the electromagnet structure 300 are provided at both the front and rear ends of the left and right sides of the servo valve pipeline 104. An electromagnet structure 300 for controlling the movement of the oil inlet and outlet control structure is provided between the front and rear groups of electromagnet structure mounting frames 400.

[0026] An electromagnet is provided on the inner side of the electromagnet structure 300, and the electromagnet structure 300 is electrically connected to an external power supply through a wire, and the left and right groups of electromagnet structures 300 are controlled separately. A group of docking seats 106 for docking with the inner side of the electromagnet structure 300 are provided on both sides of the oil inlet and outlet control structure conduit 105. The external power supply energizes the electromagnet through the wire, so that it attracts the central tube 201, thereby controlling the left and right movement of the central tube 201.

[0027] An oil guide hole 202 for oil transmission is vertically penetrated through the center of the left side of the center tube 201. A group of inner sealing rings 203 for preventing oil from spilling are provided at both ends of the outer side of the center tube 201 near the center of the center tube 201.

[0028] A group of outer sealing rings 204 for preventing oil from spilling are provided on the right side of the right end inner sealing ring 203 and on the left side of the left end inner sealing ring 203. A group of auxiliary control springs 205 for assisting the left and right movement of the center tube 201 are provided on both ends. The inner sealing ring 203 can seal both ends of the oil when it passes through the oil guide hole 202, and the outer sealing ring 204 can seal both ends when the oil is prohibited from passing through the oil guide hole 202.

[0029] A spring seat 206 for installing the auxiliary control spring 205 is provided at one end of the auxiliary control spring 205 away from the center of the central tube 201. The auxiliary control spring 205 and the spring seat 206 are an integrated structure. The auxiliary control spring 205 and the central tube 201 are not connected. The auxiliary control spring 205 and the spring seat 206 are integrally arranged so that the auxiliary control spring 205 can assist the central tube 201 in rebounding force.

[0030] See also Figure 1-Figure 4 As the first embodiment of the utility model: firstly, two groups of electromagnet structures 300 are arranged at both ends, and the electromagnets are energized by an external power supply through wires, so that they attract the central tube 201. The electromagnets can be used to drive the central tube 201 to move left and right in both the conduction and blocking of the oil, thereby increasing the speed of the left and right movement of the central tube 201. Secondly, a group of auxiliary control springs 205 are arranged at both ends of the central tube 201 and are separated from the central tube 201. They can compress and accumulate elastic potential energy to assist in rebound, thereby improving the accuracy of oil inlet and outlet control.

[0031] A group of flower-shaped mounting plates 107 for mounting an electromagnet structure mounting frame 400 are provided on the outer sides of the front and rear ends of the servo valve pipeline 104. The flower-shaped mounting plates 107 and the electromagnet structure mounting frame 400 are connected and fixed by long bolts. The flower-shaped mounting plates 107 can be connected and fixed to the electromagnet structure mounting frame 400 by bolts, so that the electromagnet structure mounting frame 400 can be conveniently disassembled and assembled.

[0032] The electromagnet structure 300 is fixed to the electromagnet structure mounting frame 400 by short bolts. A servo valve mounting seat 101 is provided below the servo valve pipeline 104. The lower ends of the left and right sides of the servo valve mounting seat 101 are provided with mounting plates 102 for facilitating the installation of the servo valve. A mounting hole 103 is vertically penetrated through the upper surface of the mounting plate 102 to form a mounting hole.

[0033] See also Figure 1-Figure 3, as the second embodiment of the utility model: based on the above-mentioned first embodiment, a group of flower-shaped mounting plates 107 for mounting the electromagnet structure mounting frame 400 are provided on the outer sides of the front and rear ends of the servo valve pipeline 104, and a servo valve mounting seat 101 is provided below the servo valve pipeline 104. The lower ends of the left and right sides of the servo valve mounting seat 101 are provided with mounting plates 102 that are convenient for servo valve installation. The upper surface of the mounting plate 102 is vertically penetrated to form a mounting hole 103. First, the user can use long bolts to connect and fix the flower-shaped mounting plate 107 and the electromagnet structure mounting frame 400, and can use end bolts to connect and fix the electromagnet structure mounting frame 400 and the electromagnet mechanism 300, which is convenient for disassembly and assembly of the electromagnet structure mounting frame 400 and the electromagnet structure 300. Secondly, the user can conveniently install the servo valve body 100 through the mounting plate 102 and the mounting hole 103.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic servo valve for accurately controlling the amount of oil in and out, comprising: A servo valve body (100), an oil inlet and outlet control structure, an electromagnet structure (300) and an electromagnet structure mounting frame (400), characterized in that: the servo valve body (100) has a servo valve pipeline (104) for guiding oil at the center of the upper end thereof; Both left and right ends of the servo valve pipeline (104) are provided with oil inlet and outlet control structure conduits (105), and the inner side of the oil inlet and outlet control structure conduits (105) is provided with an oil inlet and outlet control structure for accurately controlling the inlet and outlet of oil; The oil inlet and outlet control structure is composed of a central tube (201), an inner sealing ring (203), an outer sealing ring (204), an auxiliary control spring (205) and a spring seat (206); a group of electromagnet structure mounting frames (400) for mounting the electromagnet structure (300) are provided at both the left and right sides and the front and rear ends of the servo valve pipeline (104); and an electromagnet structure (300) for controlling the movement of the oil inlet and outlet control structure is provided between the front and rear groups of the electromagnet structure mounting frames (400).

2. A hydraulic servo valve for accurately controlling the amount of oil in and out as claimed in claim 1, characterized in that: An electromagnet is provided inside the electromagnet structure (300), the electromagnet structure (300) is electrically connected to an external power supply via a wire, and the left and right groups of electromagnet structures (300) are controlled separately, and a group of docking seats (106) for docking with the inner side of the electromagnet structure (300) are provided on both left and right sides of the oil inlet and outlet control structure conduit (105).

3. A hydraulic servo valve for accurately controlling the amount of oil in and out as claimed in claim 2, characterized in that: An oil guide hole (202) for guiding oil is vertically penetrated through the center of the left side of the central tube (201), and a group of inner sealing rings (203) for preventing oil from spilling are provided at both left and right ends of the outer side surface of the central tube (201) close to the center of the central tube (201).

4. A hydraulic servo valve for accurately controlling the amount of oil in and out as claimed in claim 3, characterized in that: A group of outer sealing rings (204) for preventing oil from spilling are provided on the right side of the inner sealing ring (203) at the right end and on the left side of the inner sealing ring (203) at the left end, and a group of auxiliary control springs (205) for assisting the center tube (201) to move left and right are provided at both left and right ends.

5. A hydraulic servo valve for accurately controlling the amount of oil in and out as claimed in claim 4, characterized in that: A spring seat (206) for mounting the auxiliary control spring (205) is provided at one end of the auxiliary control spring (205) away from the center of the central tube (201); the auxiliary control spring (205) and the spring seat (206) are an integrated structure; the auxiliary control spring (205) and the central tube (201) are not connected.

6. A hydraulic servo valve for accurately controlling the amount of oil in and out as claimed in claim 1, characterized in that: A group of flower-shaped mounting plates (107) for mounting the electromagnet structure mounting frame (400) are provided on the outer sides of both front and rear ends of the servo valve pipeline (104); the flower-shaped mounting plates (107) are connected and fixed to the electromagnet structure mounting frame (400) by long bolts.

7. A hydraulic servo valve for accurately controlling the amount of oil in and out as claimed in claim 6, characterized in that: The electromagnet structure (300) and the electromagnet structure mounting frame (400) are connected and fixed by short bolts. A servo valve mounting seat (101) is provided below the servo valve pipeline (104). The lower ends of the left and right sides of the servo valve mounting seat (101) are provided with mounting plates (102) for facilitating the installation of the servo valve. The upper surface of the mounting plate (102) is vertically penetrated to form a mounting hole (103).

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