Hydraulic valve with anti-leakage function

Abstract

The hydraulic valve with the anti-leakage function comprises a hydraulic valve body, port flanges are arranged at the two ends of the hydraulic valve body, the port flanges are connected with connecting flanges, the connecting flanges are connected with connecting pipes, and anti-leakage devices are arranged at the positions of the port flanges and the connecting flanges. The leakage-proof device comprises a first leakage-proof cover and second leakage-proof covers, the first leakage-proof cover is connected with the second leakage-proof covers, a port flange and a connecting flange are arranged between the first leakage-proof cover and the second leakage-proof covers, the first leakage-proof cover is connected with the trigger device, the two second leakage-proof covers are communicated with the distinguishing device, and the distinguishing device is connected with the trigger device. The hydraulic valve with the anti-leakage function has the functions of secondary protection, distinguishing of the leakage position of the hydraulic valve and automatic triggering of position guiding alarm, meanwhile, the hydraulic valve can be used in a reciprocating mode, whether repairing is completed or not is checked, and therefore the repeated utilization rate is increased while the efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic valves, and particularly to a hydraulic valve with a leakage prevention function. Background Art

[0002] A patent application with the publication number CN108799587A discloses a detachable hydraulic oil leakage prevention hydraulic valve, including a valve body. A first interface is fixedly connected to the top of the valve body. Clamping holes are formed in the front and back of the first interface. A shunt pipe is threadedly connected to the inner wall of the first interface. Clamping components are arranged on the front and back of the shunt pipe, and the clamping components are clamped with the clamping holes. A second interface is sleeved on the surface of the shunt pipe. A locking pipe is fixedly connected to the left side of the valve body, and locking grooves are arranged on the front and back of the locking pipe. The present invention solves the problems that when the existing hydraulic valves are used and installed, most of them require the cooperation of many tools for installation, so the installation efficiency is not high, and when the hydraulic valves are in use, it is very easy for the installation joints to become loose due to slight vibration of the valves themselves, resulting in leakage and affecting the normal use of the hydraulic valves.

[0003] The main reasons for the leakage of the existing hydraulic valve interfaces mainly include damage or aging of the sealing parts, resulting in loss of sealing effect, incorrect installation of the sealing parts, resulting in sealing failure, loose pipe joints, not tightened in place, too high working temperature, affecting the performance of the sealing parts, unreasonable selection and design of the sealing parts, and the design of the mating parts of the sealing parts not reaching the ideal state, such as too large clearance between the mutually moving surfaces. For this situation, the key to preventing leakage of the hydraulic valve interface lies in reasonable sealing design, correct installation operation, and regular maintenance inspection. However, the existing hydraulic valve leakage prevention is relatively complex and has a single function. Therefore, the present invention designs a hydraulic valve with a leakage prevention function that can prevent leakage, can perform a series of measures, and can be reused reciprocally. Summary of the Invention

[0004] The purpose of the present invention is to provide a hydraulic valve with a leakage prevention function to solve the technical problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A hydraulic valve with a leakage prevention function, including a hydraulic valve. Port flanges are arranged at both ends of the hydraulic valve. The port flanges are connected to connection flanges, and the connection flanges are connected to connection pipes. Leakage prevention devices are arranged at the positions of the port flanges and the connection flanges;

[0006] The leak prevention device includes a first leak prevention cover and a second leak prevention cover. The first leak prevention cover and the second leak prevention cover are connected. Between the first leak prevention cover and the second leak prevention cover are a port flange and a connection flange. The first leak prevention cover is connected to a trigger device. The two second leak prevention covers are communicated with a discrimination device. At the middle position of the bottom of the inner ring of the first leak prevention cover, a first rubber gasket is arranged. The first rubber gasket is butted against one side of a docking ring. The docking ring is fixedly connected to a connecting pipe. At the bottom of the inner ring of the first leak prevention cover, a second rubber gasket is arranged. The second rubber gasket is butted against one side of the second leak prevention cover.

[0007] Furthermore, the trigger device includes a trigger cylinder. One end of the trigger cylinder is communicated with the first leak prevention cover. The inner wall of the trigger cylinder is slidably connected with a trigger piston. A through first notch is opened on the outer ring of the lower end of the trigger cylinder. The trigger cylinder outside the first notch is connected to a connecting sleeve. The inner walls on both sides of the first notch are connected to connecting columns. A torsion spring is sleeved outside the connecting columns. One end of the torsion spring contacts the trigger piston. The other end of the torsion spring is connected to an alarm device. The top of the trigger cylinder is threadedly connected to a connecting bolt. The bottom of the connecting bolt is connected to a pressure relief elastic member. A pressure relief port is opened on the trigger cylinder on one side of the pressure relief elastic member.

[0008] Furthermore, the alarm device includes a rocker switch. The outer ring of one end of the rocker switch is rotatably connected to a connecting thread ring. The connecting thread ring is threadedly connected to the connecting sleeve. One end of the rocker switch is connected to the other end of the torsion spring. The other end of the rocker switch is connected to a battery. The surface of the battery is electrically connected to a guiding light and a voice-activated alarm. A dust prevention device is arranged at the upper end of the guiding light.

[0009] Furthermore, the guiding light includes a laser light and a ground row light. A reflective sheet is arranged between the ground row light and the laser light.

[0010] Furthermore, the dust prevention device includes a dust prevention plate. The dust prevention plate is located at the upper end of the guiding light. One side of the dust prevention plate is connected to one end of a connecting rod. The other end of the connecting rod is connected to one end of a pressure telescopic rod. The inner ring of the other end of the pressure telescopic rod is communicated with the inside of the connecting thread ring.

[0011] Furthermore, the discrimination device includes a sliding cylinder. The upper end of the sliding cylinder is communicated with the inside of two second dust prevention covers. The middle position of the inner wall of the sliding cylinder is connected to the outer ring of a partition ring. One end of the partition ring is provided with a display piston. One side of the display piston away from the partition ring is connected to one end of a sliding rod. One end of the sliding cylinder close to the display piston is connected to a limit bolt. The limit bolt is provided with a ventilation hole.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The hydraulic valve with a leak prevention function is reasonable and has the following advantages:

[0013] (1) The first anti-leakage cover and the second anti-leakage cover of the anti-leakage device can provide secondary protection against leakage at the connection between the port flange and the connecting flange of the hydraulic valve. The end of the first anti-leakage cover far from the second anti-leakage cover is hexagonal, which is convenient for the installation and docking of the staff. At the same time, the first rubber gasket and the second rubber sheet further improve the anti-leakage performance after the connection between the first anti-leakage cover and the second anti-leakage cover. And the discrimination device can determine which port flange and connecting flange of the first anti-leakage cover and the second anti-leakage cover have medium leakage, thus preventing the repair personnel from making wrong disassembly. When the medium enters the first anti-leakage cover and the second anti-leakage cover, the increased pressure can cause the trigger piston to move upward, and the trigger piston will cause the torsion spring to rotate, resulting in the activation of the alarm device to notify the repair personnel in time and mark itself. When the pressure is overloaded, the trigger piston will continue to rise and compress the pressure relief elastic member, so that the medium will be discharged from the pressure relief port, thus avoiding damage to the equipment under the condition of overpressure. At the same time, pushing the trigger piston back to its original position during the repair process can also ensure the reuse of the trigger device;

[0014] (2) When the torsion spring rotates to cause the rocker switch to turn on, the battery power supply is used to energize the guiding light and the voice-activated alarm for illumination and alarm. The laser light can enable the repair personnel at a distance to discover the position in time. At the same time, the voice-activated alarm can also let the repair personnel know the position information. Finally, the ground row light illuminates the exact position. In order to prevent the guiding light from being polluted by dust, resulting in a decrease or failure of the illumination effect, when the leakage medium enters, it will enter the internal connecting thread ring and then enter the pressure telescopic rod. Under the action of the medium pressure, the pressure telescopic rod extends, causing the dust-proof plate to disengage from the upper end of the guiding light, so that the guiding light is protected and covered when the alarm device is not triggered, and the guiding light is exposed when the alarm device is triggered. Brief Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is an exploded view of the present invention;

[0017] Figure 3 is a partial cross-sectional view of the present invention;

[0018] Figure 4 is Figure 3 the enlarged view at A in

[0019] Figure 5 is a schematic structural diagram of the dust-proof device of the present invention in the open state;

[0020] Figure 6 is a schematic structural diagram of the dust-proof device of the present invention in the closed state;

[0021] Figure 7 is a cross-sectional view of the discrimination device of the present invention.

[0022] In the figure: 1 - hydraulic valve, 11 - port flange, 2 - leak prevention device, 21 - first leak prevention cover, 211 - docking ring, 212 - first rubber gasket, 213 - second rubber gasket, 22 - second leak prevention cover, 3 - discrimination device, 31 - sliding cylinder, 32 - partition ring, 33 - display piston, 34 - sliding rod, 35 - limit bolt, 4 - trigger device, 41 - trigger cylinder, 411 - pressure relief port, 42 - trigger piston, 43 - connecting bolt, 44 - pressure relief elastic member, 45 - torsion spring, 46 - connecting column, 47 - connecting sleeve, 5 - alarm device, 51 - connecting thread ring, 52 - rocker switch, 53 - battery, 54 - voice-activated alarm, 55 - guiding light, 56 - dust-proof device, 561 - telescopic rod, 562 - connecting rod, 563 - dust-proof plate, 6 - connecting pipe, 61 - connecting flange. Specific implementation mode

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-7, a technical solution provided by the present invention: a hydraulic valve with a leakage prevention function, including a hydraulic valve 1. Port flanges 11 are provided at both ends of the hydraulic valve 1. The port flanges 11 are connected to connecting flanges 61, and the connecting flanges 61 are connected to connecting pipes 6. A leakage prevention device 2 is provided at the positions of the port flanges 11 and the connecting flanges 61; the leakage prevention device 2 includes a first leakage prevention cover 21 and a second leakage prevention cover 22. The first leakage prevention cover 21 and the second leakage prevention cover 22 are connected. Between the first leakage prevention cover 21 and the second leakage prevention cover 22 are the port flange 11 and the connecting flange 61. The first leakage prevention cover 21 is connected to a triggering device 4, and the two second leakage prevention covers 22 are communicated with a discrimination device 3. At the middle position of the inner bottom of the first leakage prevention cover 21, a first rubber gasket 212 is provided. The first rubber gasket 212 is butted against one side of a docking ring 211, and the docking ring 211 is fixedly connected to the connecting pipe 6. A second rubber gasket 213 is provided at the inner bottom of the first leakage prevention cover 21. The second rubber gasket 213 is butted against one side of the second leakage prevention cover 22. Through the first leakage prevention cover 21 and the second leakage prevention cover 22 of the leakage prevention device 2, secondary protection can be provided for the leakage at the connection between the port flange 11 of the hydraulic valve 1 and the connecting flange 61. And the end of the first leakage prevention cover 21 away from the second leakage prevention cover 22 is hexagonal, which is convenient for the installation and docking of the staff. At the same time, the first rubber gasket 212 and the second rubber sheet 213 further improve the leakage prevention performance after the connection between the first leakage prevention cover 21 and the second leakage prevention cover 22. And the discrimination device 3 can determine which end of the port flange 11 and the connecting flange 61 at the positions of the first leakage prevention cover 21 and the second leakage prevention cover 22 has medium leakage, thus avoiding the repair personnel from disassembling wrongly.

[0025] The triggering device 4 includes a triggering cylinder 41. One end of the triggering cylinder 41 is communicated with the first leakage prevention cover 21. The inner wall of the triggering cylinder 41 is slidably connected to a triggering piston 42. A through first notch is opened on the outer circumference of the lower end of the triggering cylinder 41. The triggering cylinder 41 outside the first notch is connected to a connecting sleeve 47. The inner walls on both sides of the first notch are connected to a connecting column 46. A torsion spring 45 is sleeved outside the connecting column 46. One end of the torsion spring 45 contacts the triggering piston 42, and the other end of the torsion spring 45 is connected to an alarm device 5. The top of the triggering cylinder 41 is threadedly connected to a connecting bolt 43. The bottom of the connecting bolt 43 is connected to a pressure relief elastic member 44. A pressure relief port 411 is opened on the triggering cylinder 41 on one side of the pressure relief elastic member 44. When the medium enters the first leakage prevention cover 21 and the second leakage prevention cover 22, due to the increase in pressure, the triggering piston 42 can be caused to move upward, and the triggering piston 42 will cause the torsion spring 45 to rotate, causing the alarm device 5 to be turned on to notify the repair personnel in time and mark itself. When the pressure is overloaded, the triggering piston 42 will continue to rise and compress the pressure relief elastic member 44, so that the medium is discharged from the pressure relief port 411, thus avoiding the damage of the equipment under the condition of overloaded pressure. At the same time, pushing the triggering piston 42 back to its original position during the repair process can also ensure the reuse of the triggering device 4.

[0026] The alarm device 5 includes a rocker switch 52. One outer ring of the rocker switch 52 is rotatably connected to the connecting threaded ring 51. The connecting threaded ring 51 is threadedly connected to the connecting sleeve 47. One end of the rocker switch 52 is connected to the other end of the torsion spring 45. The other end of the rocker switch 52 is connected to the battery 53. The surface of the battery 53 is electrically connected to the guiding light 55 and the voice-activated alarm 54. A dust-proof device 56 is arranged at the upper end of the guiding light 55. The guiding light 55 includes a laser light and a ground row light. A reflective sheet is arranged between the ground row light and the laser light. When the torsion spring 45 rotates to cause the rocker switch 52 to turn on, the battery 53 is powered to make the guiding light 55 and the voice-activated alarm 54 energized for illumination and alarm. The repair personnel at a distance can be timely found through the laser light. At the same time, the voice-activated alarm 54 can also let the repair personnel know the position information. Finally, the exact position is illuminated by the ground row light.

[0027] The dust-proof device 56 includes a dust-proof plate 563. The dust-proof plate 563 is located at the upper end of the guiding light 55. One side of the dust-proof plate 563 is connected to one end of the connecting rod 562. The other end of the connecting rod 562 is connected to one end of the pressure telescopic rod 561. The inner ring of the other end of the pressure telescopic rod 561 is internally communicated with the inside of the connecting threaded ring 51. In order to prevent the guiding light 55 from being polluted by dust, resulting in a decrease or failure of the lighting effect. When the leakage medium, the medium will enter the inside of the connecting threaded ring 51, and then enter the pressure telescopic rod 561. Under the action of the medium pressure, the pressure telescopic rod 561 extends, so that the dust-proof plate 563 is separated from the upper end of the guiding light 55. Thus, the guiding light 55 is protected and covered when the alarm device 5 is not triggered, and the guiding light 55 is exposed when the alarm device 5 is triggered.

[0028] The discrimination device 3 includes a sliding cylinder 31. The upper end of the sliding cylinder 31 is internally communicated with the two second dust-proof covers. The middle position of the inner wall of the sliding cylinder 31 is connected to the outer ring of the partition ring 32. One end of the partition ring 32 is provided with a display piston 33. One side of the display piston 33 away from the partition ring 32 is connected to one end of the sliding rod 34. One end of the sliding cylinder 31 close to the display piston 33 is connected to the limit bolt 35. The limit bolt 35 is provided with a ventilation hole. In order to be able to determine which end of the port flange 11 and the connecting flange 61 leaks. Through the display piston 33 in the sliding cylinder 31, if the display piston 33 in the sliding cylinder 31 slides away from the partition ring 32, it proves that the port flange 11 and the connecting flange 61 away from the display piston 33 leak. If it does not slide, it proves that the port flange 11 and the connecting flange 61 at the end close to the display piston 33 leak. And during the repair process, by pushing the sliding rod 34 to reset the display piston 33, the discrimination device can be reused to distinguish which section of the port flange 11 and the connecting flange 61 leaks.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Accordingly, all changes that fall within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A hydraulic valve with a leakage prevention function, comprising a hydraulic valve (1), characterized in that: Both ends of the hydraulic valve (1) are provided with port flanges (11), the port flanges (11) are connected to the connecting flanges (61), the connecting flanges (61) are connected to the connecting pipes (6), and a leak prevention device (2) is arranged at the positions of the port flanges (11) and the connecting flanges (61); The leak prevention device (2) includes a first leak prevention cover (21) and a second leak prevention cover (22), the first leak prevention cover (21) is connected to the second leak prevention cover (22), between the first leak prevention cover (21) and the second leak prevention cover (22) are the port flange (11) and the connecting flange (61), the first leak prevention cover (21) is connected to the triggering device (4), and the two second leak prevention covers (22) are communicated with the discrimination device (3). At the middle position of the inner bottom of the first leak prevention cover (21), a first rubber gasket (212) is arranged, the first rubber gasket (212) is butted against one side of the docking ring (211), the docking ring (211) is fixedly connected to the connecting pipe (6), a second rubber gasket (213) is arranged at the inner bottom of the first leak prevention cover (21), and the second rubber gasket (213) is butted against one side of the second leak prevention cover (22).

2. A hydraulic valve with a leakage prevention function according to claim 1, characterized in that: The triggering device (4) includes a triggering cylinder (41), one end of the triggering cylinder (41) is communicated with the first leak prevention cover (21), the inner wall of the triggering cylinder (41) is slidably connected to the triggering piston (42), a through first notch is opened on the outer circle at the lower end of the triggering cylinder (41), the triggering cylinder (41) outside the first notch is connected to the connecting sleeve (47), both inner walls on both sides of the first notch are connected to the connecting column (46), a torsion spring (45) is sleeved outside the connecting column (46), one end of the torsion spring (45) contacts the triggering piston (42), the other end of the torsion spring (45) is connected to the alarm device (5), the top of the triggering cylinder (41) is threadedly connected to the connecting bolt (43), the bottom of the connecting bolt (43) is connected to the pressure relief elastic member (44), and a pressure relief port (411) is opened on the triggering cylinder (41) on one side of the pressure relief elastic member (44).

3. A hydraulic valve with a leakage prevention function according to claim 1, characterized in that: The alarm device (5) includes a rocker switch (52), the outer circle of one end of the rocker switch (52) is rotatably connected to the connecting thread ring (51), the connecting thread ring (51) is threadedly connected to the connecting sleeve (47), one end of the rocker switch (52) is connected to the other end of the torsion spring (45), the other end of the rocker switch (52) is connected to the battery (53), the surface of the battery (53) is electrically connected to the guiding light (55) and the voice-activated alarm (54), and a dust prevention device (56) is arranged at the upper end of the guiding light (55).

4. A hydraulic valve with a leakage prevention function according to claim 1, characterized in that: The guiding light (55) includes a laser light and a ground row light, and a reflective sheet is arranged between the ground row light and the laser light.

5. A hydraulic valve with a leakage prevention function according to claim 3, characterized in that: The dust-proof device (56) includes a dust-proof plate (563). The dust-proof plate (563) is located above the guiding light (55). One side of the dust-proof plate (563) is connected to one end of a connecting rod (562). The other end of the connecting rod (562) is connected to one end of a pressure telescopic rod (561). The inner ring of the other end of the pressure telescopic rod (561) is in internal communication with the inside of a connecting thread ring (51).

6. A hydraulic valve with a leakage prevention function according to claim 1, characterized in that: The discrimination device (3) includes a sliding cylinder (31). The upper end of the sliding cylinder (31) is in internal communication with the inside of two second dust-proof covers. The middle position of the inner wall of the sliding cylinder (31) is connected to the outer ring of a partition ring (32). One end of the partition ring (32) is provided with a display piston (33). One side of the display piston (33) away from the partition ring (32) is connected to one end of a sliding rod (34). One end of the sliding cylinder (31) close to the display piston (33) is connected to a limit bolt (35). The limit bolt (35) is provided with a ventilation hole.

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