Anti-static hydraulic valve

Abstract

The utility model relates to the technical field of hydraulic valves, in particular to an anti-static hydraulic valve. An anti-static hydraulic valve comprises a main valve body, a main valve element, a pressure spring, a first metal elastic ball, a wire, a jointing clamp and the like, an oil inlet and an oil outlet are connected to the bottom of the main valve body, the main valve element is installed in the main valve body, the pressure spring is arranged in the main valve body, one end of the pressure spring is fixedly connected into the main valve body, and the other end of the pressure spring is fixedly connected to the right end of the main valve element. The rear portion of the main valve body is connected with a first metal marble in a sliding mode, the rear portion of the first metal marble is connected to a wire through a guide rod, the tail end of the wire is connected with a jointing clamp, the guide rod is sleeved with an elastic piece used for pushing the first metal marble forwards, and the connecting position of the guide rod and the wire is sealed. According to the utility model, the metal part in the main valve body is grounded, so that static electricity in the hydraulic valve is eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to an anti-static hydraulic valve. Background Art

[0002] A hydraulic valve is an automated component operated by pressurized oil. It is controlled by the pressure oil of a pressure-matching valve and is usually used in combination with an electromagnetic pressure-matching valve. It can be used to remotely control the on / off of oil, gas, and water pipeline systems in hydropower stations. It is widely used in various fields. It is divided into manual, electric, and hydraulic control according to the control method, and into flow valves, pressure valves, and directional valves according to function.

[0003] The flow and friction of the medium and the friction between the medium and the pipe wall may generate static electricity and may cause damage or interference to the system. Static electricity will cause the medium to adsorb on the inner wall of the valve body. The residual medium will affect the friction between the valve core and the valve body, thus forming a vicious circle and affecting the normal use of the hydraulic valve. Moreover, in electronically controlled valves, since electrical signals and electric actuators are involved, the problem of static electricity may be more prominent. Utility Model Content

[0004] In order to overcome the disadvantage that static electricity cannot be eliminated and will increase medium adsorption, a hydraulic valve which is anti-static and capable of removing medium is provided.

[0005] An anti-static hydraulic valve comprises a main valve body, a main valve core, a pressure spring, a pilot valve body, a pilot valve core, a first metal elastic ball, a second metal elastic ball, a wire and a wiring clamp. The pilot valve body is fixedly connected to the right end of the main valve body, the inner cavities of the main valve body and the pilot valve body are communicated, the pilot valve core is slidably connected in the pilot valve body, an oil inlet and an oil outlet are connected at the bottom of the main valve body, the main valve core is installed in the main valve body, a pressure spring is arranged in the main valve body, one end of the pressure spring is fixedly connected to the main valve body, and the other end is fixedly connected to the right end of the main valve core, the first metal elastic ball is slidably connected to the rear of the main valve body, the second metal elastic ball is slidably connected to the rear of the pilot valve body, the second metal elastic ball contacts the pilot valve core, the rear parts of the first metal elastic ball and the second metal elastic ball are connected to the wire through a guide rod, a wiring clamp is connected to the tail end of the wire, an elastic member for pushing the first metal elastic ball and the second metal elastic ball forward is sleeved on the guide rod, and the connection between the guide rod and the wire is sealed.

[0006] The hydraulic valve also includes a fan-shaped scraper and a push rod. A threaded groove is opened on the main valve core. The front end of the push rod is slidably connected in the threaded groove, and the rear end is fixedly connected to the main valve body. The fan-shaped scraper is fixedly connected to the main valve core, and the fan-shaped scraper is slidably connected to the inner wall of the main valve body.

[0007] The pilot valve body also includes a pressure-adjusting spring, a locking nut and a pressure-adjusting handle. A locking nut is threadedly connected to the top of the pilot valve body, a pressure-adjusting handle is fixedly connected to the top of the locking nut, and a pressure-adjusting spring is arranged on the top of the pilot valve core. The upper end of the pressure-adjusting spring is fixedly connected to the pressure-adjusting handle, and the lower end is fixedly connected to the top of the pilot valve core.

[0008] In one of the embodiments, it also includes a threaded sleeve and a threaded cone. The top of the threaded sleeve is connected to the bottom of the wire. The wiring clamp is fixed to the threaded sleeve. The threaded cone is threadedly connected to the bottom of the threaded sleeve.

[0009] In one of the embodiments, an auxiliary bracket, a telescopic plate and a limit screw are also included. The telescopic plate is connected to the lower end of the main valve body, the telescopic plate is slidably connected to the auxiliary bracket, and the limit screw is threadedly connected to the auxiliary bracket and the telescopic plate.

[0010] Preferably, a mounting seat for hanging the threaded sleeve is provided at the rear end of the main valve body.

[0011] The beneficial effects of the utility model are:

[0012] The utility model eliminates static electricity inside the hydraulic valve by grounding the metal parts in the main valve body, and removes the hydraulic medium sticking in the main valve body. The smooth inner cavity can reduce the generation of static electricity, thereby further eliminating static electricity and ensuring the normal use of the hydraulic valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a three-dimensional structural cross-sectional view of the rotating mechanism of the utility model;

[0015] Figure 3 It is a partial structural schematic diagram of the back of the utility model;

[0016] Figure 4 It is a schematic diagram of the connection structure of the push rod, the first metal pinball and the second metal pinball of the utility model;

[0017] Figure 5 It is a schematic diagram of the connection structure of the back of the utility model.

[0018] Markings in the figure: 1- auxiliary bracket, 2- telescopic plate, 21- limit screw, 3- main valve body, 31- oil inlet, 32- oil outlet, 4- main valve core, 41- threaded groove, 5- fan-shaped scraper, 6- pressure spring, 7- pilot valve body, 8- pilot valve core, 9- pressure regulating spring, 10- locking nut, 11- pressure regulating handle, 12- push rod, 13- first metal ball, 131- second metal ball, 14- wire, 15- threaded sleeve, 16- threaded cone, 17- wiring clamp. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0020] Embodiment: An anti-static hydraulic valve, such as Figure 1-Figure 5 As shown, it includes a main valve body 3, a main valve core 4, a pressure spring 6, a pilot valve body 7, a pilot valve core 8, a first metal elastic ball 13, a second metal elastic ball 131, a wire 14 and a wiring clamp 17. The pilot valve body 7 is fixedly connected to the right end of the main valve body 3. The inner cavities of the main valve body 3 and the pilot valve body 7 are connected. The pilot valve core 8 is slidably connected in the pilot valve body 7. The bottom of the main valve body 3 is connected with an oil inlet 31 and an oil outlet 32. The main valve core 4 is installed in the main valve body 3. The main valve body 3 is provided with a pressure spring 6. One end of the pressure spring 6 is fixedly connected to the main valve body 3, and the other end is fixedly connected to the right end of the main valve core 4. The first metal ball 13 is slidably connected to the rear of the pilot valve body 7, and the second metal ball 131 is slidably connected to the rear of the pilot valve body 7. The second metal ball 131 contacts the pilot valve core 8. The rear of the first metal ball 13 and the second metal ball 131 are connected to the wire 14 through a guide rod. The tail end of the wire 14 is connected with a wiring clamp 17. An elastic member for pushing the first metal ball 13 and the second metal ball 131 forward is sleeved on the guide rod, and the connection between the guide rod and the wire 14 is sealed. The main valve body 3 and the main valve core 4 are both made of metal, and static electricity can be conducted through the main valve body 3 and the main valve core 4.

[0021] like Figure 3-Figure 5 As shown, the hydraulic valve also includes a fan-shaped scraper 5 and a push rod 12. A threaded groove 41 is opened on the main valve core 4. The front end of the push rod 12 is slidably connected in the threaded groove 41, and the rear end is fixedly connected to the main valve body 3. The fan-shaped scraper 5 is fixedly connected to the main valve core 4, and the fan-shaped scraper 5 is slidably connected to the inner wall of the main valve body 3.

[0022] like Figure 2 and Figure 3 As shown, the pilot valve body 7 also includes a pressure-adjusting spring 9, a locking nut 10 and a pressure-adjusting handle 11. The locking nut 10 is threadedly connected to the top of the pilot valve body 7, and the pressure-adjusting handle 11 is fixedly connected to the top of the locking nut 10. A pressure-adjusting spring 9 is arranged on the top of the pilot valve core 8, and the upper end of the pressure-adjusting spring 9 is fixedly connected to the pressure-adjusting handle 11, and the lower end is fixedly connected to the top of the pilot valve core 8.

[0023] The main valve body 3 is an electrically controlled direct-acting relief valve, and the pilot valve body 7 is a pilot valve. The hydraulic oil enters the main valve body 3 through the oil inlet 31, and through the movement of the main valve core 4 in the main valve body 3, the pressure release channel is opened when the pressure exceeds the set value to achieve the purpose of control. At the same time, the pilot valve can adjust the opening and closing of the relief valve by adjusting the control oil circuit, thereby achieving more precise control of the system pressure. The action of the main valve is controlled by a smaller control pressure. Turning the pressure regulating handle 11 can compress or stretch the pressure regulating spring 9, thereby changing The regulating pressure of the pilot valve, when the hydraulic oil flows, the static electricity generated passes through the first metal ball 13 and the second metal ball 131 in contact with the main valve core 4 and the pilot valve core 8, and then is conducted through the wire 14. At this time, the wiring clamp 17 is connected to the ground wire to complete the grounding and eliminate static electricity. In addition, during the movement of the main valve core 4, the push rod 12 squeezes the main valve core 4 to rotate, thereby driving the fan-shaped scraper 5 to scrape off the sticky oil film in the inner cavity of the main valve body 3, and follows the outflow of the hydraulic oil, thereby clearing the inner cavity of the main valve body 3 and reducing the generation of static electricity.

[0024] like Figure 5 As shown, it also includes a threaded sleeve 15 and a threaded cone 16. The top of the threaded sleeve 15 is connected to the bottom of the wire 14. The wiring clamp 17 is fixed to the threaded sleeve 15. The threaded cone 16 is threadedly connected to the bottom of the threaded sleeve 15. A mounting seat for hanging the threaded sleeve 15 is provided at the rear end of the main valve body 3. When the wiring clamp 17 is used, the threaded sleeve 15 can be hung on the mounting seat. A cone block is provided at the bottom of the threaded cone 16. The cone block is rotatably connected to the bottom of the threaded cone 16. Therefore, when the threaded cone 16 rotates, the cone block moves vertically.

[0025] like Figure 1 As shown, it also includes an auxiliary bracket 1, a telescopic plate 2 and a limit screw 21. The telescopic plate 2 is connected to the lower end of the main valve body 3, the telescopic plate 2 is slidably connected to the auxiliary bracket 1, and the limit screw 21 is threadedly connected to the auxiliary bracket 1 and the telescopic plate 2.

[0026] When outdoors or without a ground wire, insert the threaded cone 16 into the ground and rotate the threaded cone 16 to squeeze the bottom cone block into the ground to complete the grounding. When installing the main valve body 3, adjust the length of the telescopic plate 2 in the auxiliary bracket 1 through the limit screw 21 to change the supporting height of the auxiliary bracket 1 to the main valve body 3, thereby achieving the purpose of auxiliary support.

Claims

1. An anti-static hydraulic valve, characterized in that: The invention comprises a main valve body (3), a main valve core (4), a pressure spring (6), a pilot valve body (7), a pilot valve core (8), a first metal ball (13), a second metal ball (131), a wire (14) and a wiring clamp (17). The pilot valve body (7) is fixedly connected to the right end of the main valve body (3). The inner cavities of the main valve body (3) and the pilot valve body (7) are connected. The pilot valve core (8) is slidably connected in the pilot valve body (7). An oil inlet (31) and an oil outlet (32) are connected at the bottom of the main valve body (3). The main valve core (4) is installed in the main valve body (3). A pressure spring (6) is arranged in the main valve body (3). One end of the pressure spring (6) is fixedly connected to the pilot valve core (8). The other end is fixedly connected to the right end of the main valve core (4) in the main valve body (3). A first metal ball (13) is slidably connected to the rear of the main valve body (3). A second metal ball (131) is slidably connected to the rear of the pilot valve body (7). The second metal ball (131) contacts the pilot valve core (8). The rear of the first metal ball (13) and the second metal ball (131) are connected to the wire (14) through a guide rod. A wiring clamp (17) is connected to the tail end of the wire (14). An elastic member for pushing the first metal ball (13) and the second metal ball (131) forward is sleeved on the guide rod, and the connection between the guide rod and the wire (14) is sealed.

2. The anti-static hydraulic valve according to claim 1, characterized in that: The hydraulic valve further comprises a fan-shaped scraper (5) and a push rod (12). A threaded groove (41) is formed on the main valve core (4). The front end of the push rod (12) is slidably connected in the threaded groove (41), and the rear end is fixedly connected in the main valve body (3). The fan-shaped scraper (5) is fixedly connected to the main valve core (4), and the fan-shaped scraper (5) is slidably connected to the inner wall of the main valve body (3).

3. An anti-static hydraulic valve according to claim 2, characterized in that: The pilot valve body (7) further comprises a pressure regulating spring (9), a locking nut (10) and a pressure regulating handle (11). The locking nut (10) is threadedly connected to the top of the pilot valve body (7), the pressure regulating handle (11) is fixedly connected to the top of the locking nut (10), and a pressure regulating spring (9) is arranged on the top of the pilot valve core (8). The upper end of the pressure regulating spring (9) is fixedly connected to the pressure regulating handle (11), and the lower end is fixedly connected to the top of the pilot valve core (8).

4. The anti-static hydraulic valve according to claim 3, characterized in that: It also includes a threaded sleeve (15) and a threaded cone (16), wherein the top of the threaded sleeve (15) is connected to the bottom of the conductor (14), a wiring clamp (17) is fixed to the threaded sleeve (15), and the threaded cone (16) is threadedly connected to the bottom of the threaded sleeve (15).

5. The anti-static hydraulic valve according to claim 4, characterized in that: The invention also comprises an auxiliary bracket (1), a telescopic plate (2) and a limit screw (21); the telescopic plate (2) is connected to the lower end of the main valve body (3); the telescopic plate (2) is slidably connected to the auxiliary bracket (1); and the limit screw (21) is threadedly connected to the auxiliary bracket (1) and the telescopic plate (2).

6. The anti-static hydraulic valve according to claim 5, characterized in that: A mounting seat for hanging a threaded sleeve (15) is provided at the rear end of the main valve body (3).

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