Hydraulic valve element driving mechanism

Abstract

The utility model provides a hydraulic valve element driving mechanism, and relates to the technical field of hydraulic valves. The hydraulic valve is used for solving the technical problem that the opening pressure of the hydraulic valve can be adjusted only when the valve body of the hydraulic valve provided by the existing patent needs to be disassembled and then is replaced with telescopic springs with different elastic coefficients. The hydraulic valve element driving mechanism comprises a hydraulic valve shell, a valve element is arranged in the hydraulic valve shell in a sliding mode, a top cover is installed on the hydraulic valve shell, a first cavity and a second cavity are formed in the hydraulic valve shell, a liquid outlet and a liquid inlet are formed in the hydraulic valve shell, the liquid inlet is communicated with the first cavity, and the liquid outlet is communicated with the second cavity. The worm is driven by the servo motor to rotate, so that the worm gear rotates along the threads of the threaded pipe, the jacking column is driven to slide along the threaded pipe, the first elastic piece is stretched or compressed, the elastic stress of the first elastic piece is adjusted, and the effect of adjusting the pressure needed by sliding opening of the valve element is achieved.

Description

Technical Field

[0001] The utility model provides a hydraulic valve core driving mechanism, which relates to the technical field of hydraulic valves. 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 oil, gas, and water pipeline systems in hydropower stations. It is often used for clamping, controlling, lubricating, and other oil circuits.

[0003] The patent with the patent authorization announcement number CN218717826U discloses a hydraulic valve. The patent hydraulic valve can disassemble the valve body to clean the scale stains inside the valve body, and the telescopic spring bears the hydraulic pressure and resets the valve core. When a certain hydraulic pressure is reached, the hydraulic valve can be opened. However, the hydraulic valve provided by the patent still has shortcomings in actual use. When the pressure required to open the hydraulic valve needs to be adjusted, it cannot be adjusted quickly. The valve body needs to be disassembled and the telescopic spring with different elastic coefficients needs to be replaced, which is more troublesome.

[0004] Therefore, it is necessary to provide a hydraulic valve core drive mechanism that can quickly adjust the opening pressure. Utility Model Content

[0005] In order to overcome the disadvantage of the existing patented hydraulic valve that the opening pressure of the hydraulic valve can only be adjusted after the valve body is disassembled and a telescopic spring with a different elastic coefficient is replaced, the utility model provides a hydraulic valve core drive mechanism capable of quickly adjusting the opening pressure.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a hydraulic valve core driving mechanism, including a hydraulic valve housing, a top cover and a valve core, a valve core is slidably arranged in the hydraulic valve housing, a top cover is installed on the hydraulic valve housing, a first cavity and a second cavity are provided in the hydraulic valve housing, a liquid outlet and a liquid inlet are provided on the hydraulic valve housing, the liquid inlet is connected to the first cavity, and the liquid outlet is connected to the second cavity, and also includes a first elastic member, a threaded tube and a top column, a threaded tube is fixedly connected in the hydraulic valve housing, a top column is slidably arranged in the threaded tube, a first elastic member is arranged between the top column and the valve core, and a driving component for making the top column slide in the threaded tube is arranged in the hydraulic valve housing.

[0007] Preferably, the drive assembly includes a worm gear fixedly connected to the top column, the worm gear is threadedly connected to the threaded pipe, a servo motor is installed in the hydraulic valve housing, the output shaft of the servo motor is fixedly connected to the worm through a coupling, and the worm cooperates with the worm gear.

[0008] Preferably, the worm gear is provided with an internal thread.

[0009] Preferably, a pressure-bearing chamber is provided in the valve core.

[0010] Preferably, it also includes an early warning device installed on the hydraulic valve housing, a trigger block is arranged on the early warning device, a contact head for pressing the trigger block is slidably arranged in the second cavity, and two second elastic parts are fixedly connected between the contact head and the hydraulic valve housing.

[0011] Preferably, the cylindrical edge of the valve core is provided with a bevel chamfer.

[0012] Preferably, a pressure display screen is installed on the hydraulic valve housing.

[0013] Compared with the prior art, the valve core driving mechanism provided by the embodiment of the utility model has the following advantages: 1. The servo motor drives the worm to rotate, so that the worm wheel rotates along the thread of the threaded tube, and then drives the top column to slide along the threaded tube, so that the first elastic member is stretched or compressed to adjust the elastic stress of the first elastic member, thereby achieving the effect of adjusting the pressure required for the valve core to slide open.

[0014] 2. The excess hydraulic oil in the second cavity pushes the contact head to slide, so that the contact head contacts the trigger block, causing the early warning device to sound an alarm, thereby achieving the effect of warning that the hydraulic pressure is too high, so as to prompt the staff to deal with it in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the hydraulic valve housing, top cover and early warning device of the utility model;

[0017] Figure 3 It is a three-dimensional cross-sectional schematic diagram of the top cover, valve core and threaded tube of the utility model;

[0018] Figure 4 It is a three-dimensional cross-sectional schematic diagram of the worm wheel, the top column and the worm of the utility model;

[0019] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the valve core, contact head and early warning device of the utility model;

[0020] Figure 6 For this utility model Figure 5 Enlarged view of point A in the middle.

[0021] In the accompanying drawings: 1: hydraulic valve housing, 2: top cover, 3: valve core, 301: first cavity, 302: second cavity, 303: pressure-bearing cavity, 4: first elastic member, 5: liquid outlet, 6: liquid inlet, 7: threaded tube, 8: chamfer, 9: worm gear, 901: top column, 10: worm, 11: servo motor, 12: contact head, 13: second elastic member, 14: early warning device, 15: trigger block, 16: pressure display screen. DETAILED DESCRIPTION

[0022] Embodiment 1: Hydraulic valve core drive mechanism, see Figure 1-Figure 5 As shown, the hydraulic valve housing 1 includes a top cover 2 and a valve core 3. The valve core 3 is slidably arranged in the hydraulic valve housing 1. The valve core 3 slides up and down along the hydraulic valve housing 1. A pressure-bearing cavity 303 is provided in the valve core 3 to facilitate the introduction of hydraulic pressure and act on the valve core 3. A top cover 2 for preventing hydraulic oil from leaking is installed on the top of the hydraulic valve housing 1 by welding. A first cavity 301 and a second cavity 302 are provided in the hydraulic valve housing 1. The first cavity 301 is located on the upper part of the second cavity 302. The side of the hydraulic valve housing 1 is provided with a pressure-bearing cavity 303. There are a liquid outlet 5 and a liquid inlet 6, the liquid inlet 6 is connected to the first cavity 301, and the liquid outlet 5 is connected to the second cavity 302. It also includes a first elastic member 4, a threaded tube 7 and a top column 901. The top of the hydraulic valve housing 1 is fixedly connected to the threaded tube 7 by welding. The top column 901 is slidably arranged in the threaded tube 7. The top column 901 slides up and down along the threaded tube 7. A first elastic member 4 is arranged between the top column 901 and the valve core 3. A driving component for making the top column 901 slide in the threaded tube 7 is arranged in the hydraulic valve housing 1.

[0023] See also Figure 3-Figure 5 As shown, the drive assembly includes a worm gear 9 fixedly connected to the bottom of the top column 901 by welding, the worm gear 9 is provided with an internal thread, the worm gear 9 is threadedly connected to the threaded pipe 7 through the internal thread, a servo motor 11 is installed in the hydraulic valve housing 1 by bolt connection, the output shaft of the servo motor 11 is fixedly connected to the worm 10 through a coupling, and the worm 10 cooperates with the worm gear 9.

[0024] When the hydraulic valve needs to be used, the inlet 6 is connected to the hydraulic oil inlet pipe, and the outlet 5 is connected to the hydraulic oil outlet pipe. When the hydraulic oil enters the first cavity 301 through the inlet 6, the hydraulic oil enters the pressure-bearing cavity 303 of the valve core 3. When the hydraulic pressure reaches a certain pressure, the valve core 3 is pushed to slide downward along the hydraulic valve housing 1. At this time, the valve core 3 compresses the first elastic member 4 toward the top column 901. When the top of the middle column of the valve core 3 is lower than the top of the second cavity 302, the hydraulic oil enters the second cavity 302 and flows out through the outlet 5; when the required pressure for opening the hydraulic valve needs to be adjusted, the servo motor 11 is started to drive the worm 10 to rotate, so that the worm wheel 9 rotates along the thread of the threaded tube 7, and then the top column 901 slides along the threaded tube 7, so that the first elastic member 4 is stretched or compressed, so that the pressure required for the valve core 3 to compress the first elastic member 4 downward is adjusted.

[0025] Embodiment 2: Based on Embodiment 1, refer to Figure 5 and Figure 6As shown, it also includes an early warning device 14 installed on one side of the hydraulic valve housing 1 by bolt connection, a trigger block 15 is arranged on the early warning device 14, a contact head 12 for pressing the trigger block 15 is slidably arranged in the second cavity 302, and two upper and lower second elastic members 13 are fixedly connected between the contact head 12 and the hydraulic valve housing 1 by welding.

[0026] When the hydraulic oil enters the second cavity 302, if the hydraulic pressure is too high, the liquid inlet 6 cannot discharge the hydraulic oil in time. At this time, the hydraulic pressure in the second cavity 302 is too high, which in turn pushes the contact head 12 to slide. At this time, the second elastic member 13 is compressed and deformed by force to make the contact head 12 contact with the trigger block 15. At this time, the early warning device 14 sounds an alarm to remind the staff that the hydraulic pressure is too high and to deal with it in time.

[0027] See also Figure 1 and Figure 3 As shown, the cylindrical edge of the valve core 3 is provided with a chamfer 8, and a pressure display screen 16 is installed on one side of the hydraulic valve housing 1 by bolt connection. The chamfer 8 can make the cylindrical body of the valve core 3 slide smoothly in the first cavity 301 and the second cavity 302, and the valve core 3 will not be stuck. The pressure display screen 16 can display the pressure value of the hydraulic pressure in the hydraulic valve housing 1.

Claims

1. A hydraulic valve core drive mechanism, comprising a hydraulic valve housing (1), a top cover (2) and a valve core (3), wherein the valve core (3) is slidably arranged in the hydraulic valve housing (1), the top cover (2) is mounted on the hydraulic valve housing (1), a first cavity (301) and a second cavity (302) are provided in the hydraulic valve housing (1), a liquid outlet (5) and a liquid inlet (6) are provided on the hydraulic valve housing (1), the liquid inlet (6) is communicated with the first cavity (301), and the liquid outlet (5) is communicated with the second cavity (302), wherein: The hydraulic valve body (1) further comprises a first elastic member (4), a threaded tube (7) and a top column (901); the threaded tube (7) is fixedly connected to the inside of the hydraulic valve housing (1); the top column (901) is slidably arranged in the threaded tube (7); the first elastic member (4) is arranged between the top column (901) and the valve core (3); and a driving assembly for causing the top column (901) to slide in the threaded tube (7) is arranged in the hydraulic valve housing (1).

2. The hydraulic valve core drive mechanism according to claim 1, characterized in that: The drive assembly comprises a worm gear (9) fixedly connected to a top column (901), the worm gear (9) being threadedly connected to a threaded tube (7), a servo motor (11) being installed in a hydraulic valve housing (1), an output shaft of the servo motor (11) being fixedly connected to a worm (10) via a coupling, and the worm (10) being matched with the worm gear (9).

3. The hydraulic valve core drive mechanism according to claim 2, characterized in that: The worm wheel (9) is provided with an internal thread.

4. The hydraulic valve core drive mechanism according to claim 1, characterized in that: A pressure-bearing chamber (303) is provided in the valve core (3).

5. The hydraulic valve core drive mechanism according to claim 1, characterized in that: It also includes an early warning device (14) mounted on the hydraulic valve housing (1), a trigger block (15) being arranged on the early warning device (14), a contact head (12) for pressing the trigger block (15) being slidably arranged in the second cavity (302), and two second elastic members (13) being fixedly connected between the contact head (12) and the hydraulic valve housing (1).

6. The hydraulic valve core drive mechanism according to claim 1, characterized in that: The cylindrical edge of the valve core (3) is provided with an inclined chamfer (8).

7. The hydraulic valve core drive mechanism according to claim 1, characterized in that: A pressure display screen (16) is mounted on the hydraulic valve housing (1).

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