High-sealing servo valve for potash fertilizer bucket wheel machine

Abstract

The utility model relates to the technical field of servo valves, in particular to a high-sealing servo valve for a potash fertilizer bucket wheel machine, which comprises a servo valve body, a sealing plate is mounted on the outer side of the servo valve body, and a screw is in threaded connection with the inside of the sealing plate. A first clamping frame and a second clamping frame are installed between the servo valve body and the sealing plate, plugging cotton is fixedly connected to the interiors of the first clamping frame and the second clamping frame, a connecting plate is fixedly connected to the outer side of the second clamping frame, a sliding rod is fixedly connected to the top of the first clamping frame, and a sliding block is fixedly connected to the top of the sliding rod. The top of the sliding rod is fixedly connected with a sliding block, a moving groove is formed in the connecting plate, a stabilizing plate is fixed to the top of the connecting plate, and the outer side of the stabilizing plate is fixedly connected with a threaded pipe. And meanwhile, a lubricant on the surface of the servo valve can be conveniently cleaned.

Description

Technical Field

[0001] The utility model relates to a high-sealability servo valve used for a potash fertilizer bucket wheel machine, belonging to the technical field of servo valves. Background Art

[0002] Servo valve is a component mainly used for electro-hydraulic conversion. It can convert tiny electrical signals into high-power hydraulic energy output. The electromagnetic torque, spring tube counter-torque, feedback rod counter-torque and other forces on its performance have a great influence on the electro-hydraulic control system. Therefore, it is the core and key of the electro-hydraulic control system. A typical servo valve consists of a permanent magnet torque motor, a nozzle, a baffle, a valve core, a valve sleeve and a control chamber, and a servo valve is installed inside the potash bucket wheel excavator.

[0003] There are still some problems in the use of the existing servo valve for potash fertilizer bucket wheel excavator. For example, the sealing plate of the servo valve may loosen after long-term use, which leads to reduced sealing of the servo valve. At the same time, lubricating oil is easily absorbed on the outside of the servo valve, which makes it more troublesome to clean. Utility Model Content

[0004] The purpose of the utility model is to provide a high-sealing servo valve for a potash fertilizer bucket wheel machine. The utility model has a simple structure and is easy to use. It can improve the sealing of the servo valve itself and facilitate the cleaning of the lubricant on the surface of the servo valve to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-sealing servo valve for a potash fertilizer bucket wheel excavator comprises a servo valve body, a sealing plate is installed on the outer side of the servo valve body, a screw is connected to the inner thread of the sealing plate, a No. 1 clamping frame and a No. 2 clamping frame are installed between the servo valve body and the sealing plate, sealing cotton is fixedly connected to the inner sides of the No. 1 clamping frame and the No. 2 clamping frame, a connecting plate is fixedly connected to the outer side of the No. 2 clamping frame, a sliding rod is fixedly connected to the top of the No. 1 clamping frame, a sliding block is fixedly connected to the top of the sliding rod, a movable groove is opened inside the connecting plate, a stabilizing plate is fixedly connected to the top of the connecting plate, a threaded tube is fixedly connected to the outer side of the stabilizing plate, a screw is threadedly connected to the inner side of the threaded tube, a rotating cover is fixedly connected to the outer side of the screw, and an extrusion rod is fixedly connected to the end of the screw away from the rotating cover.

[0007] Furthermore, a lifting groove is opened inside the No. 1 clamping frame and the No. 2 clamping frame, and a connecting rod is slidably connected inside the lifting groove. A moving block is fixedly connected to the outer side of the connecting rod, and a return spring is fixedly connected to the bottom of the connecting rod. The outer side of the moving block is fixedly connected to a transmission rod, and the outer side of the transmission rod is fixedly connected to a fixed rod, and the outer side of the fixed rod is fixedly connected to a cleaning plate.

[0008] Furthermore, the sealing plates are symmetrically distributed on the outside of the servo valve body, and the No. 1 clamping frame and the No. 2 clamping frame are of the same size.

[0009] Furthermore, the slide bar is slidably connected inside the movable groove, and one end of the connecting plate is located at the top of the No. 1 clamping frame.

[0010] Furthermore, the screw is rotatably connected to the inside of the threaded tube through a rotating cover, and the extrusion rod is located outside the slider.

[0011] Furthermore, the moving block is slidably connected to the outer sides of the first clamping frame and the second clamping frame through a connecting rod.

[0012] Furthermore, the bottom of the return spring is fixedly connected to the bottom of the lifting slot, and the cleaning plate is slidably connected to the outside of the servo valve body.

[0013] The beneficial effects of the utility model are:

[0014] (a) The utility model provides a servo valve body, and installs a sealing plate on the outside of the servo valve body by screws. At this time, a No. 1 clamping frame and a No. 2 clamping frame are placed on the outside of the servo valve body and the sealing plate, and sealing cotton is fixedly connected to the inner sides of the No. 1 clamping frame and the No. 2 clamping frame, so that the sealing cotton blocks the connection between the sealing plate and the servo valve body, and then the rotating cover is rotated to drive the screw to rotate inside the threaded tube, so that the screw moves inside the threaded tube, and the extrusion rod is driven to move by the movement of the screw, so that the extrusion rod squeezes the slider at the top of the connecting plate, and the slider drives the slide bar to move inside the moving groove, because the bottom of the slide bar is fixedly connected to the top of the No. 1 clamping frame, and the connecting plate is fixedly connected to the top of the No. 2 clamping frame, at this time, the No. 1 clamping frame and the No. 2 clamping frame will be close to each other, so that they are fixedly connected to the connection between the servo valve body and the sealing plate, achieving a high sealing effect.

[0015] (ii) The utility model provides a clamping frame No. 1 and a clamping frame No. 2, and a lifting groove is opened inside the clamping frame No. 1 and the clamping frame No. 2. When it is necessary to clean the oil stains on the surface of the servo valve body, the transmission rod moves downward under the action of the moving block. At this time, the transmission rod drives the fixed rod to move. Since the cleaning plate is slidably connected to the outside of the servo valve body through the fixed rod, the cleaning plate will slide on the outside of the servo valve body, thereby cleaning the servo valve body. A reset spring is fixedly connected to the bottom of the connecting rod. When the transmission rod is released, the moving block will return to the top under the action of the reset spring to prepare for the next use, thereby achieving the effect of convenient cleaning of oil stains. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the specific embodiments of the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 This is a schematic diagram of the structure of a high-sealing servo valve for potash fertilizer bucket wheel machine of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the outer sides of the first clamping frame and the second clamping frame of a high-sealing servo valve for a potash fertilizer bucket wheel machine of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a high-sealability servo valve connecting plate and a No. 1 clamping frame for a potash fertilizer bucket wheel machine of the utility model;

[0020] Figure 4 This is a structural schematic diagram of a high-sealing servo valve moving block and the outer side of a cleaning plate for a potash fertilizer bucket wheel machine of the utility model;

[0021] Numbers in the figure: 1. Servo valve body; 2. Sealing plate; 3. Screw; 4. Clamping frame No. 1; 5. Clamping frame No. 2; 6. Sealing cotton; 7. Connecting plate; 8. Sliding rod; 9. Sliding block; 10. Moving groove; 11. Stabilizing plate; 12. Threaded tube; 13. Screw; 14. Rotating cover; 15. Extrusion rod; 16. Lifting groove; 17. Connecting rod; 18. Moving block; 19. Reset spring; 20. Transmission rod; 21. Fixed rod; 22. Cleaning plate. 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 in 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] Example 1 Please refer to Figure 1-Figure 4 , the utility model provides a technical solution:

[0024] A high-sealing servo valve for a potash bucket wheel excavator comprises a servo valve body 1, a sealing plate 2 is installed on the outer side of the servo valve body 1, a screw 3 is connected to the inner thread of the sealing plate 2, a clamping frame 4 and a clamping frame 5 are installed between the servo valve body 1 and the sealing plate 2, a plugging cotton 6 is fixedly connected to the inner sides of the clamping frame 4 and the clamping frame 5, a connecting plate 7 is fixedly connected to the outer side of the clamping frame 5, a sliding rod 8 is fixedly connected to the top of the clamping frame 4, a sliding block 9 is fixedly connected to the top of the sliding rod 8, a moving groove 10 is provided inside the connecting plate 7, a stabilizing plate 11 is fixedly connected to the top of the connecting plate 7, a threaded tube 12 is fixedly connected to the outer side of the stabilizing plate 11, a screw 13 is threadedly connected to the inner side of the threaded tube 12, a rotating cover 14 is fixedly connected to the outer side of the screw 13, and an extrusion rod 15 is fixedly connected to the end of the screw 13 away from the rotating cover 14.

[0025] Specifically, Figure 1 As shown, the sealing plate 2 is symmetrically distributed on the outside of the servo valve body 1, the No. 1 clamping frame 4 and the No. 2 clamping frame 5 are the same size, the slide rod 8 is slidably connected inside the movable groove 10, one end of the connecting plate 7 is located at the top of the No. 1 clamping frame 4, the screw 13 is rotatably connected to the inside of the threaded tube 12 through the rotating cover 14, and the extrusion rod 15 is located on the outside of the slider 9.

[0026] In this embodiment: by setting up the servo valve body 1, the sealing plate 2 is installed on the outside of the servo valve body 1 by screws 3, then by placing the No. 1 clamping frame 4 and the No. 2 clamping frame 5 on the outside of the servo valve body 1 and the sealing plate 2, and fixing the plugging cotton 6 on the inside of the No. 1 clamping frame 4 and the No. 2 clamping frame 5, so that the plugging cotton 6 blocks the connection between the sealing plate 2 and the servo valve body 1, and then by rotating the rotating cover 14, the rotating cover 14 drives the screw 13 to rotate inside the threaded tube 12, so that the screw 13 is screwed in the threaded tube 12. The tube 12 moves inside, and the movement of the screw 13 drives the extrusion rod 15 to move, so that the extrusion rod 15 squeezes the slider 9 on the top of the connecting plate 7. At this time, the slider 9 drives the slide bar 8 to move inside the moving groove 10. Since the bottom of the slide bar 8 is fixedly connected to the top of the No. 1 clamping frame 4, and the connecting plate 7 is fixedly connected to the top of the No. 2 clamping frame 5, the No. 1 clamping frame 4 and the No. 2 clamping frame 5 will approach each other at this time, so that they are fixedly connected at the connection between the servo valve body 1 and the sealing plate 2, achieving a high sealing effect.

[0027] Example 2 Please refer to Figure 1 , Figure 2 and Figure 4 The difference between this embodiment and embodiment 1 is that a lifting groove 16 is opened inside the No. 1 clamping frame 4 and the No. 2 clamping frame 5, and a connecting rod 17 is slidably connected inside the lifting groove 16. A moving block 18 is fixedly connected to the outer side of the connecting rod 17, and a return spring 19 is fixedly connected to the bottom of the connecting rod 17. A transmission rod 20 is fixedly connected to the outer side of the moving block 18, a fixed rod 21 is fixedly connected to the outer side of the transmission rod 20, and a cleaning plate 22 is fixedly connected to the outer side of the fixed rod 21.

[0028] Specifically, Figure 1-4 As shown, the moving block 18 is slidably connected to the outside of the No. 1 clamping frame 4 and the No. 2 clamping frame 5 through the connecting rod 17, the bottom of the return spring 19 is fixedly connected to the bottom of the lifting groove 16, and the cleaning plate 22 is slidably connected to the outside of the servo valve body 1.

[0029] In the present embodiment: by setting a No. 1 clamping frame 4 and a No. 2 clamping frame 5, a lifting groove 16 is opened inside the No. 1 clamping frame 4 and the No. 2 clamping frame 5. When it is necessary to clean the oil stains on the surface of the servo valve body 1, the transmission rod 20 is moved downward under the action of the moving block 18. At this time, the transmission rod 20 will drive the fixed rod 21 to move. Since the cleaning plate 22 is slidably connected to the outside of the servo valve body 1 through the fixed rod 21, the cleaning plate 22 will slide on the outside of the servo valve body 1, thereby cleaning the servo valve body 1. A reset spring 19 is fixedly connected to the bottom of the connecting rod 17. When the transmission rod 20 is released, the moving block 18 will return to the top under the action of the reset spring 19, so as to be used next time, thereby achieving the effect of convenient cleaning of oil stains.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-sealing servo valve for a potash fertilizer bucket wheel machine, comprising a servo valve body (1), characterized in that: A sealing plate (2) is installed on the outside of the servo valve body (1), and a screw (3) is connected to the inner thread of the sealing plate (2). A first clamping frame (4) and a second clamping frame (5) are installed between the servo valve body (1) and the sealing plate (2). The insides of the first clamping frame (4) and the second clamping frame (5) are fixedly connected with sealing cotton (6), the outer side of the second clamping frame (5) is fixedly connected with a connecting plate (7), and the top of the first clamping frame (4) is fixedly connected with a sliding rod (8). The top of the slide rod (8) is fixedly connected to a slide block (9), a movable groove (10) is provided inside the connecting plate (7), a stabilizing plate (11) is fixed to the top of the connecting plate (7), a threaded tube (12) is fixedly connected to the outside of the stabilizing plate (11), the threaded tube (12) is internally threadedly connected to a screw rod (13), the outside of the screw rod (13) is fixedly connected to a rotating cover (14), and an end of the screw rod (13) away from the rotating cover (14) is fixedly connected to an extrusion rod (15).

2. A high sealing servo valve for potash bucket wheel according to claim 1, characterized in that: A lifting groove (16) is provided inside the first clamping frame (4) and the second clamping frame (5), a connecting rod (17) is slidably connected inside the lifting groove (16), a moving block (18) is fixedly connected to the outside of the connecting rod (17), a return spring (19) is fixedly connected to the bottom of the connecting rod (17), a transmission rod (20) is fixedly connected to the outside of the moving block (18), a fixed rod (21) is fixedly connected to the outside of the transmission rod (20), and a cleaning plate (22) is fixedly connected to the outside of the fixed rod (21).

3. A high sealing servo valve for potash bucket wheel machine according to claim 1, characterized in that: The sealing plates (2) are symmetrically distributed on the outside of the servo valve body (1), and the No. 1 clamping frame (4) and the No. 2 clamping frame (5) are of the same size.

4. A high sealing servo valve for potash bucket wheel machine according to claim 1, characterized in that: The sliding rod (8) is slidably connected inside the moving groove (10), and one end of the connecting plate (7) is located on the top of the No. 1 clamping frame (4).

5. The high-sealing servo valve for potash bucket wheel machine according to claim 1, characterized in that: The screw rod (13) is rotatably connected to the inside of the threaded tube (12) via a rotating cover (14), and the extrusion rod (15) is located outside the slider (9).

6. A high sealing servo valve for potash bucket wheel machine according to claim 2, characterized in that: The moving block (18) is slidably connected to the outer sides of the first clamping frame (4) and the second clamping frame (5) via a connecting rod (17).

7. A high sealing servo valve for potash bucket wheel machine according to claim 2, characterized in that: The bottom of the return spring (19) is fixedly connected to the bottom of the lifting groove (16), and the cleaning plate (22) is slidably connected to the outside of the servo valve body (1).

Images