Double-rod hydraulic valve

Abstract

The utility model relates to the technical field of hydraulic valves, in particular to a double-rod hydraulic valve. The utility model provides a double-rod hydraulic valve which comprises a double-rod hydraulic cylinder, a valve protection shell, a first water inlet pipe, a first valve, second water inlet pipes, second valves, a rotating rod and the like, the second water inlet pipes are connected to the double-rod hydraulic cylinder in a bilateral symmetry mode, the valve protection shell is connected between the two second water inlet pipes, and the first water inlet pipe is connected to the valve protection shell. A first valve is installed in the valve protection shell, a second valve is installed on the lower portion of the first valve and penetrates through the valve protection shell to be fixedly connected with the second water inlet pipe, a notch is formed in the second valve, and the lower portion of the second valve is connected with a rotating rod. The water pump in the water tank is started, so that water flows into the water circulating pipe to circularly flow, heat generated during operation of the first valve and the second valve is conveniently cooled, and the first valve and the second valve are prevented from being damaged due to too high heat during operation of the first valve and the second valve.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a double-rod 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 regulating valve and is usually used in combination with an electromagnetic pressure regulating valve. It can be used to remotely control the on / off of the oil, gas, and water pipeline systems of a hydropower station.

[0003] During the reciprocating operation of the existing double-rod hydraulic valve, the hydraulic oil remaining in the hydraulic cylinder on one side can be discharged, and the hydraulic oil in the hydraulic cylinder on the other side can be transported, and this process is repeated. However, during the process of discharging and transporting the hydraulic oil, the second valve and the first valve in the hydraulic system need to be rotated repeatedly. During the long-term operation of the second valve and the first valve, heat will be generated. Due to the excessive heat generated, the hydraulic oil entering the second valve and the first valve is decomposed, thereby reducing the viscosity of the hydraulic oil, causing the hydraulic oil to become thinner, and affecting the lubrication effect of the hydraulic oil, and also causing the second valve and the first valve to be worn and damaged during operation.

[0004] In view of the above patent, it is necessary to design a double-rod hydraulic valve that cools the first valve and the second valve. Utility Model Content

[0005] In order to overcome the disadvantage that excessive heat is generated during long-term operation of the second valve and the first valve, resulting in decomposition of the hydraulic oil entering the second valve and the first valve, reducing the viscosity of the hydraulic oil and affecting the lubrication effect of the hydraulic oil, the utility model provides a double-rod hydraulic valve.

[0006] The technical implementation scheme of the utility model is: a double-rod hydraulic valve, including a double-rod hydraulic cylinder, a valve protection shell, a first water inlet pipe, a first valve, a second water inlet pipe, a second valve, a rotating rod, a blocking rod and a water outlet pipe, the double-rod hydraulic cylinder is symmetrically connected to the second water inlet pipe, a valve protection shell is connected between the two second water inlet pipes, the valve protection shell is connected to the first water inlet pipe, the first valve is installed inside the valve protection shell, the second valve is installed at the lower part of the first valve, the second valve penetrates the valve protection shell and is fixedly connected to the second water inlet pipe, a cut is opened on the second valve, the lower part of the second valve is connected to a rotating rod, the rotating rod penetrates the valve protection shell, the outer side of the rotating rod is symmetrically connected to the blocking rod, the lower part of the valve protection shell is connected to the water outlet pipe, and also includes a water tank and a water circulation pipe, the water tank is installed at the outer side of the valve protection shell, the water circulation pipe is installed at the outer side of the valve protection shell, and the water circulation pipe is communicated with the water tank.

[0007] Preferably, it also includes a sensor, an elastic member and a wedge block. The sensor is symmetrically installed on the lower part of the valve protection shell. The wedge block is slidably connected inside the sensor. The elastic member is connected to the wedge block and the inside of the sensor.

[0008] Preferably, a drain pipe is connected to the rear side of the valve protection shell.

[0009] Preferably, the number of wedge blocks is not less than two.

[0010] Preferably, a mounting hole is provided on the first water inlet pipe.

[0011] Preferably, the size of the winding of the water circulation pipe is consistent with the size of the outer side of the valve protection shell.

[0012] The beneficial effects of the utility model are as follows: by starting the water pump in the water tank, water flows into the water circulation pipe for circulation, which facilitates cooling the heat generated when the first valve and the second valve are in operation, and prevents the first valve and the second valve from being damaged by excessive heat when they are in operation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the first water inlet pipe, the second water inlet pipe, the second valve and other components of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the water outlet pipe, water tank, water circulation pipe and other parts of the utility model;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the first valve, the second valve and the cutout of the utility model;

[0017] Figure 5 It is a three-dimensional structural diagram of the components such as the rotating rod, the water outlet pipe and the sensor of the utility model;

[0018] Figure 6 The exploded view is of the sensor, elastic member, wedge block and other components of the utility model.

[0019] Figure numerals: 1. double-rod hydraulic cylinder, 2. valve protection shell, 3. first water inlet pipe, 4. first valve, 5. second water inlet pipe, 6. second valve, 7. incision, 71. rotating rod, 72. baffle rod, 8. water outlet pipe, 9. water tank, 10. water circulation pipe, 11. sensor, 12. elastic part, 13. wedge block. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Embodiment: A double-rod hydraulic valve, such as Figure 1-Figure 6As shown, it includes a double-rod hydraulic cylinder 1, a valve protection shell 2, a first water inlet pipe 3, a first valve 4, a second water inlet pipe 5, a second valve 6, a rotating rod 71, a blocking rod 72, a water outlet pipe 8, a water tank 9, a water circulation pipe 10, a sensor 11, an elastic member 12 and a wedge block 13. The double-rod hydraulic cylinder 1 is symmetrically connected with the second water inlet pipe 5, and a valve protection shell 2 for protecting the first valve 4 and the second valve 6 is connected between the two second water inlet pipes 5. A drain pipe is connected to the rear side of the valve protection shell 2, so that the residual hydraulic oil can be discharged through the drain pipe, which is convenient for the user to collect it. The first water inlet pipe 3 is connected to the valve protection shell 2, and a mounting hole is opened on the first water inlet pipe 3. When the first water inlet pipe 3 is connected to an external pipe, the first water inlet pipe 3 can be fixed to the external pipe by passing a bolt through the mounting hole. The first valve 4 is installed inside the valve protection shell 2, and the second valve 6 is installed at the lower part of the first valve 4. The second valve 6 penetrates the valve protection shell 2 and the second water inlet pipe 5 is fixedly connected, a cutout 7 is provided on the second valve 6, a rotating rod 71 is connected to the lower part of the second valve 6, the rotating rod 71 passes through the valve protection shell 2, and a blocking rod 72 for squeezing the wedge block 13 is symmetrically connected to the outer side of the rotating rod 71, a water outlet pipe 8 is connected to the lower part of the valve protection shell 2, a water tank 9 is installed on the outer side of the valve protection shell 2, a water circulation pipe 10 is installed on the outer side of the valve protection shell 2, the water circulation pipe 10 is communicated with the water tank 9, and water can circulate in the water circulation pipe 10, the size of the winding of the water circulation pipe 10 is consistent with the size of the outer side of the valve protection shell 2, which is convenient for cooling the heat generated in the valve protection shell 2, and a sensor 11 is symmetrically installed at the lower part of the valve protection shell 2, a wedge block 13 is slidably connected in the sensor 11, the number of the wedge blocks 13 is not less than two, the movement of the wedge block 13 can start and close the sensor 11, and the wedge block 13 is connected to the inside of the sensor 11 with an elastic member 12, and the elastic member 12 is a compression spring, which can return the wedge block 13 to its original position.

[0022] When the device is needed, during the operation of the double-rod hydraulic valve, when it is necessary to add hydraulic oil to the double-rod hydraulic valve, the user connects the external pipe to the first water inlet pipe 3, and then uses bolts to pass through the mounting holes to fix the first water inlet pipe 3 and the external pipe, and then installs the servo motor on the rotating rod 71. After the servo motor is installed, the hydraulic oil flows into the first water inlet pipe 3 through the external pipe, and then flows into the first valve 4 through the first water inlet pipe 3, and then flows into the second water inlet pipe 5 on the right through the first valve 4, and then flows into the hydraulic cylinder through the second water inlet pipe 5 on the right. At this time, the telescopic rod of the hydraulic cylinder on the other side is pushed out, so that the residual hydraulic oil in the hydraulic cylinder on the other side flows into the second valve 6, and then flows through the second valve 6. The hydraulic oil flows into the incision 7, and then flows into the drain pipe through the incision 7, and then is discharged through the drain pipe, which is convenient for the user to collect the discharged residual hydraulic oil, and then the servo motor is started, and the servo motor output shaft drives the rotating rod 71 to rotate, and the rotation of the rotating rod 71 drives the second valve 6 and the first valve 4 to rotate, so that the second valve 6 and the first valve 4 rotate clockwise to 180 degrees, so that the feed port on the second valve 6 is aligned with the direction of the outlet pipe 8, and the feed port on the first valve 4 is aligned with the second water inlet pipe 5 on the left side. During the rotation of the rotating rod 71, the baffle rod 72 is driven to rotate, and the baffle rod 72 rotates to contact and squeeze the wedge block 13, so that the wedge block 13 moves inward along the sensor 11, and the elastic member 1 2 is compressed, and then the sensor 11 is started. Since the sensor 11 is connected to the servo motor wire, the sensor 11 triggers the induction effect, which can stop the servo motor. When the blocking rod 72 no longer squeezes the wedge block 13, under the reset action of the elastic member 12, the wedge block 13 moves outward along the sensor 11, so that the sensor 11 is closed. Then the hydraulic oil flows through the first valve 4 to the second water inlet pipe 5 on the left, and then flows through the second water inlet pipe 5 on the left to the hydraulic cylinder on the other side. At this time, the telescopic rod of the hydraulic cylinder is pushed out, so that the hydraulic oil remaining in the hydraulic cylinder flows to the outlet pipe 8, and then flows to the second valve 6 through the outlet pipe 8, and then flows to the incision 7 through the second valve 6, and then flows through the incision 7. Flows into the drain pipe and then is discharged through the drain pipe. The above operation is repeated. When the first valve 4 and the second valve 6 are operated for a long time, heat will be generated. Excessive heat will cause the hydraulic oil entering the first valve 4 and the second valve 6 to decompose, thereby reducing the lubricating effect of the hydraulic oil, causing damage to the first valve 4 and the second valve 6 during operation. When the first valve 4 and the second valve 6 need to be cooled, the user starts the water pump in the water tank 9 to make water flow through the water tank 9 to the water circulation pipe 10. The water circulates in the water circulation pipe 10 to cool down the heat generated in the valve protection shell 2. When the temperature in the valve protection shell 2 is lowered, the water pump in the water tank 9 is turned off.

Claims

1. A double-rod hydraulic valve, comprising a double-rod hydraulic cylinder (1), a valve protection shell (2), a first water inlet pipe (3), a first valve (4), a second water inlet pipe (5), a second valve (6), a rotating rod (71), a blocking rod (72) and a water outlet pipe (8), wherein the second water inlet pipe (5) is connected to the double-rod hydraulic cylinder (1) in a bilaterally symmetrical manner, the valve protection shell (2) is connected between the two second water inlet pipes (5), the first water inlet pipe (3) is connected to the valve protection shell (2), and the first valve (4) is mounted on the valve protection shell (2), the second valve (6) is installed at the lower part of the first valve (4), and the second valve (6) passes through the valve protection shell (2) and is fixedly connected to the second water inlet pipe (5), the cutout (7) is opened on the second valve (6), the rotating rod (71) is connected to the lower part of the second valve (6), and the rotating rod (71) passes through the valve protection shell (2), the blocking rod (72) is symmetrically connected to the outside of the rotating rod (71), and the water outlet pipe (8) is connected to the lower part of the valve protection shell (2), and the characteristics are: It also includes a water tank (9) and a water circulation pipe (10), wherein the water tank (9) is mounted on the outside of the valve protection shell (2), the water circulation pipe (10) is mounted on the outside of the valve protection shell (2), and the water circulation pipe (10) is in communication with the water tank (9).

2. A double-rod hydraulic valve according to claim 1, characterized in that: It also includes a sensor (11), an elastic member (12) and a wedge block (13), wherein the sensor (11) is symmetrically mounted on the lower part of the valve protection shell (2), the wedge block (13) is slidably connected to the inside of the sensor (11), and the elastic member (12) is connected to the wedge block (13) and the inside of the sensor (11).

3. A double-rod hydraulic valve according to claim 2, characterized in that: The rear side of the valve protection shell (2) is connected to a liquid discharge pipe.

4. A double-rod hydraulic valve according to claim 3, characterized in that: The number of the wedge blocks (13) is no less than two.

5. A double-rod hydraulic valve according to claim 4, characterized in that: The first water inlet pipe (3) is provided with a mounting hole.

6. A double-rod hydraulic valve according to claim 5, characterized in that: The size of the winding of the water circulation pipe (10) is consistent with the size of the outer side of the valve protection shell (2).

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