Touch travel switch for controlling liquid direction

Abstract

A touch type travel switch for controlling the liquid direction comprises a first shell and a second shell, a water inlet barrel is installed at the end, away from the second shell, of the first shell, a water inlet hole is formed in one end of the water inlet barrel, a sliding seat is connected into the water inlet hole through a first spring, and a first through hole is formed in the sliding seat; a first push rod and a limiting block are further arranged in the first shell, the end of the first push rod penetrates through the limiting block to be connected with a valve ball, a water outlet hole communicated with the interior is formed in the side wall of the first shell, a second push rod is slidably arranged in the second shell, and a third push rod is slidably arranged in the driving cylinder. The tail end of the third push rod is driven by a driving piston to move. According to the hydraulic prop lifting device, the automation degree of the hydraulic prop lifting device is improved, so that when a single hydraulic prop is jacked in a place mentioned in the background technology, automatic water supply for the hydraulic prop lifting device is achieved, labor input is reduced, and water supply work for the booster pump in a severe environment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid flow control switches, in particular to a touch-type travel switch for controlling the direction of liquid. Background Art

[0002] Temporary support is usually needed in tunnel maintenance, tunneling, corner coal mining, emergency rescue and other occasions. Good temporary support is an important guarantee for working in the above occasions. In order to improve the support effect, the existing temporary support usually adopts the form of a single hydraulic support. In the above places, in order to facilitate the lifting of the single hydraulic support, a hydraulic column lifter is usually used to provide the hydraulic support with power to extend. Water and emulsified oil are mixed in a certain ratio to form an emulsion. For example, Chinese patent No. CN209875193U discloses a new type of hydraulic column lifter, which can lift the hydraulic support after mixing water and emulsified oil to form an emulsion. However, when controlling the flow of static water, it is necessary to manually operate the manual reversing valve 5 to inject the static water into the boosting cylinder, and the flow direction of the static water needs to be frequently changed, which means that the direction of the manual reversing valve 5 needs to be frequently changed. It is necessary to observe the operation manually at all times, and the degree of automation is low. In addition, the above environments are all relatively harsh, and manual operation is relatively inconvenient. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a touch-type travel switch for controlling the direction of liquid.

[0004] The technical solution of this utility model is as follows:

[0005] A touch-type travel switch for controlling the direction of a liquid comprises a first shell with openings at both ends and a second shell, wherein the first shell and the second shell are arranged along the same straight line, and one end of the first shell and the second shell are in contact with each other;

[0006] A water inlet cylinder is installed at one end of the first shell away from the second shell, a water inlet hole is opened at one end of the water inlet cylinder, and a sliding seat is connected in the water inlet hole through a first spring, and a first through hole is opened in the sliding seat;

[0007] A first push rod and a limit block are also provided in the first shell, and the end of the first push rod passes through the limit block and is connected to a valve ball. A water outlet hole communicating with the interior is provided on the side wall of the first shell, and the water outlet hole is located on a side of the limit block away from the water inlet hole;

[0008] A driving cylinder is installed at one end of the second shell away from the first shell, a second push rod is slidably arranged in the second shell, and both ends of the second push rod extend into the first shell and the driving cylinder respectively, a third push rod is slidably arranged in the driving cylinder, and the end of the third push rod is driven to move by the driving piston.

[0009] In order to facilitate the static pressure water to enter the first shell, the coaxiality of the water inlet hole and the first through hole is kept consistent.

[0010] In order to facilitate the installation of the first spring and the slide seat, the water inlet hole is opened in a convex shape, and the end with a smaller diameter is arranged on the outside, and the first spring and the slide seat are installed in the end with a larger diameter of the water inlet hole.

[0011] The specific design of the first push rod is that the first push rod includes a front rod and a rear rod, and the valve ball is installed on the end of the front rod, the front rod is clearance-matched with the limit block, a limit cylinder is arranged in the first shell, and the rear rod passes through the limit cylinder and is slidably connected with the limit cylinder.

[0012] In order to increase the speed at which the static pressure water passing through the limit block flows into the water outlet, the rear rod is provided with a groove toward the second push rod, and water holes are provided on the upper and lower sides of one end of the groove close to the front rod.

[0013] In order to enable the second push rod to move along a straight line, the first shell and the second shell are both provided with an inwardly convex convex ring on one side thereof, and the second push rod passes through the convex ring and is provided with a top ball, and the second push rod is slidably connected to the convex ring.

[0014] In order to limit the second push rod and prevent it from sliding out of the second housing, a limiting ring is provided on the outer edge surface of the second push rod, and the limiting ring is in contact with the driving cylinder.

[0015] In order to facilitate the resetting of the second push rod, a second spring is arranged between the limiting ring and the convex ring.

[0016] In order to facilitate the delivery of the static pressure water to the booster pump, the water inlet is connected to the static pressure water pipe, and the water outlet is connected to the booster pump through the water outlet pipe.

[0017] In order to facilitate the installation of the water inlet cylinder and the driving cylinder, one end of the water inlet cylinder and the driving cylinder are respectively embedded and installed in the first shell and the second shell, and are connected by threads.

[0018] The beneficial effects of the utility model are as follows: the utility model is a touch-type travel switch for controlling the direction of liquid. Firstly, compared with the manual reversing valve in the prior art, the present solution drives the third push rod to move in a straight line by driving the piston, and then pushes the second push rod to move, and finally pushes the first push rod to move, so that the valve ball is separated from the limit block, and the water in the water inlet hole flows out of the water outlet hole through the limit block, and the static pressure water is automatically injected into the booster pump; secondly, by setting the first spring and the second spring, the first push rod, the second push rod and the third push rod can be pushed to reset, thereby improving the degree of automation of the present device, so that when the single hydraulic support is lifted in the place mentioned in the background technology, the hydraulic column lifter is automatically supplied with water, which reduces the labor input and facilitates the water supply work of the booster pump in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0020] In the attached picture:

[0021] Figure 1 To form a schematic diagram of the external structure of the switch;

[0022] Figure 2 To form a switch cross-section;

[0023] Figure 3 To form a partial view of the switch;

[0024] The components represented by the reference numerals in the figure are:

[0025] 1. First shell; 2. Second shell; 3. Water inlet cylinder; 4. Water inlet hole; 5. First spring; 6. Sliding seat; 7. First through hole; 8. First push rod; 81. Front rod; 82. Rear rod; 83. Groove; 84. Water through hole; 9. Limit block; 10. Valve ball; 11. Water outlet hole; 12. Driving cylinder; 13. Second push rod; 14. Third push rod; 15. Driving piston; 16. Limit cylinder; 17. Protruding ring; 18. Top ball; 19. Limit ring; 20. Second spring; 21. Static pressure water pipe; 22. Water outlet pipe. DETAILED DESCRIPTION

[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0027] Example

[0028] As mentioned in the background technology, the hydraulic column lifter is used for the lifting of a single hydraulic support. The power for the lifting comes from an emulsion formed by a mixture of water and emulsified oil in proportion, and the static water needs to be connected to a booster pump for pressurization. The existing hydraulic column lifter uses a manual reversing valve to control the flow direction of the static water, and the manual reversing valve requires a handheld handle to control the opening and closing of the valve, and the degree of automation is low. In addition, the space in the environment of the background technology is usually small and difficult to operate. Therefore, the invention is improved and a new touch-type switch is designed, which is explained in detail below with reference to the diagram.

[0029] This embodiment provides a touch-type travel switch for controlling the direction of liquid. Figure 1, including a first shell 1 and a second shell 2 with openings at both ends, the first shell 1 and the second shell 2 are both set to be circular cylindrical, and the first shell 1 and the second shell 2 are arranged along the same straight line, and one end of the two is abutted against each other, and a flange connection can be adopted in the middle. In order to facilitate the production, the inventor also designed a scheme in which the first shell 1 and the second shell 2 are integrally formed, which can also achieve the same technical effect in this scheme. Other designs are consistent and no unnecessary details are given.

[0030] In this embodiment, a water inlet cylinder 3 is installed at one end of the first shell 1 away from the second shell 2. Figure 2 , and the diameter of one end of the water inlet cylinder 3 close to the second shell 2 is smaller than the inner diameter of the open end away from the second shell 2, and is embedded in the second shell 2, and an external thread is provided on the outer edge of the water inlet cylinder 3, and an internal thread is provided in the second shell 2, and the two are threadedly connected. A water inlet hole 4 is provided at one end of the water inlet cylinder 3, and the axis of the water inlet hole 4 is consistent with the axis of the water inlet cylinder 3, and the water inlet hole 4 is provided in a convex shape, and the end with a smaller diameter is arranged on the outside, that is, the end away from the first shell 1, where the outside of the water inlet hole 4 is connected to the static pressure water pipe 21 for providing static pressure water, and secondly, a slide seat 6 is connected to the water inlet hole 4 through a first spring 5, and the corresponding first spring 5 and the slide seat 6 are installed in the end with a larger diameter of the water inlet hole 4, and the first spring 5 is installed at the critical position between the end with a smaller diameter and the end with a larger diameter of the water inlet hole 4, and the slide seat 6 is located at the end away from the critical position, and the slide seat 6 is provided with a first through hole 7, which is consistent with the coaxiality of the water inlet hole 4 to facilitate the passage of static pressure water.

[0031] Secondly, the first housing 1 is further provided with a first push rod 8 and a stop block 9, both of which are arranged on the side of the slide seat 6 close to the second housing 2, and the end of the first push rod 8 passes through the stop block 9 and is connected to a valve ball 10, the valve ball 10 is used to block the passage through which the first push rod 8 and the stop block 9 pass. Specifically, Figure 3 The first push rod 8 includes a front rod 81 and a rear rod 82. The diameter of the front rod 81 is smaller than that of the rear rod 82, and the valve ball 10 is installed at the end of the front rod 81. The front rod 81 passes through the limit block 9. The front rod 81 and the limit block 9 are gap-matched, and there is a certain gap between the two. When the valve ball 10 leaves the limit block 9, the static pressure water can flow to the other side of the limit block 9 at the gap, but the diameter of the rear rod 82 is larger than the aperture of the limit block 9 channel penetrated by the front rod 81, so that the limit block 9 can limit the rear rod 82. A limiting cylinder 16 is arranged in the first shell 1, and the rear rod 82 passes through the limiting cylinder 16 and is slidably connected with it. By setting the limiting cylinder 16, the rear rod 82 can slide along the inner wall of the limiting cylinder 16, align and guide, and the limiting cylinder 16 and the second push rod 13 are consistent in coaxiality with the water inlet 4.

[0032] When the valve ball 10 moves toward the slide seat 6 along with the first push rod 8, it contacts therewith and compresses the first spring 5. The first spring 5 can push the slide seat 6 and the first push rod 8 to return to their original position after the driving force of the first push rod 8 is removed.

[0033] On the basis of the above structure, after the valve ball 10 leaves the limit block 9, the static pressure water flows into the other side of the limit block 9. In order to be able to be transported to the booster pump, a water outlet 11 connected to the interior is opened on the side wall of the first shell 1. The water outlet 11 is located on the side of the limit block 9 away from the water inlet 4. The water outlet 11 is connected to the booster pump through the outlet pipe 22.

[0034] In order to push the first push rod 8 to move, a second push rod 13 is slidably arranged in the second shell 2, and the end of the second push rod 13 close to the first shell 1 extends into the first shell 1, and the first shell 1 and the second shell 2 are abutted against each other on a side provided with an inwardly convex convex ring 17, the inner diameters of the two convex rings 17 are consistent, and the second push rod 13 is slidably connected to the convex ring 17, and the convex ring 17 can limit the second push rod 13 so that it slides in the horizontal direction.

[0035] On the basis of the above structure, the second push rod 13 passes through the convex ring 17 and is equipped with a top ball 18. The rear rod 82 is provided with a groove 83 toward the second push rod 13. The setting of the groove 83 facilitates the internal gas circulation, and a vent is provided on the side wall 1 of the first shell. The vent is located on the side of the second push rod 13 close to the second shell 2, and water holes 84 are provided on the upper and lower sides of one end of the groove 83 close to the front rod 81. When water needs to flow, the top column 18 of the second push rod 13 reaches the edge of the groove 83 and blocks the groove 83. The static pressure water flows out of the water outlet 11 through the limit block 9, and the setting of the water hole 84 can reduce the retention of static pressure water on the right side of the limit block 9, so that a part of the static pressure water in the right chamber flows to the water outlet 11 through the water hole 84.

[0036] In order to drive the second push rod 13 to move, a driving cylinder 12 is installed at the end of the second shell 2 away from the first shell 1, and the outer diameter of one end of the driving cylinder 12 is consistent with the inner diameter of the second shell 2, so that the driving cylinder 12 can be embedded in the second shell 2, and the two are threadedly connected. The end of the second push rod 13 close to the driving cylinder 12 extends into the driving cylinder 12, and a third push rod 14 is slidably arranged in the driving cylinder 12, and the end of the third push rod 14 is driven to move by a driving piston 15. The driving piston 15 can be driven to move by a servo motor, and the number of times and the action time of the servo motor on the driving piston 15 can be adjusted to realize automatic control, and the driving piston 15 can be used to push the third push rod 14. With the movement of the three push rods 14, the third push rod 14 can collide with the second push rod 13, and the second push rod 13 slides in the direction close to the first push rod 8 and collides with the first push rod 8, driving the valve ball 10 to leave the limit block 9, so that the static pressure water passes through the gap between the first push rod 8 and the limit block 9 and is discharged at the water outlet 11, and the static pressure water passes through the process of the movement of the first push rod 8, and a part of the water flow passes through instantaneously. When the valve ball 10 collides with the edge of the first through hole 7, the static pressure water stops entering the first shell 1 through the static pressure water pipe 21, and the water inside it flows to the water outlet 11, and after the driving piston 15 unloads the force, the first push rod 8 is reset by the first spring 5, driving the valve ball 10 to re-block the limit block 9.

[0037] In order to limit the second push rod 13 and prevent it from excessively moving out of the driving cylinder 12, a limiting ring 19 is provided on the outer edge surface of the second push rod 13, and the limiting ring 19 abuts against the driving cylinder 12. The abutment between the limiting ring 19 and the driving cylinder 12 can limit the second push rod 13, and a second spring 20 is provided between the limiting ring 19 and the convex ring 17. By providing the second spring 20, after the driving piston 15 removes the thrust on the third push rod 14, the elastic force of the second spring 20 can push the second push rod 13 to reset, and then push the third push rod 14 to reset, and when the second push rod 13 is in the reset state, the third push rod 14 is in the extreme position where it can move away from the second push rod 13, and the edge of the driving cylinder 12 can limit it.

[0038] In order to improve the sealing performance of the travel switch, an annular groove is provided on the outer edge surface of the water inlet cylinder 3 embedded in the first shell 1, and an annular groove is provided at one end of the limit block 9 close to the water inlet cylinder 3, and annular grooves are provided at the position of the convex ring 17 set on the first shell 1 and the second shell 2, and a sealing ring is installed in the annular groove.

Claims

1. A touch-type travel switch for controlling the direction of a liquid, characterized in that: It comprises a first shell (1) and a second shell (2) with openings at both ends, wherein the first shell (1) and the second shell (2) are arranged along the same straight line, and one end of the first shell (1) and the second shell (2) are in contact with each other; A water inlet cylinder (3) is installed at one end of the first shell (1) away from the second shell (2), a water inlet hole (4) is opened at one end of the water inlet cylinder (3), and a sliding seat (6) is connected to the water inlet hole (4) via a first spring (5), and the sliding seat (6) is opened with a first through hole (7); A first push rod (8) and a limit block (9) are also provided in the first shell (1), and the end of the first push rod (8) passes through the limit block (9) and is connected to a valve ball (10); a water outlet (11) communicating with the interior is provided on the side wall of the first shell (1), and the water outlet (11) is located on a side of the limit block (9) away from the water inlet (4); A driving cylinder (12) is installed at one end of the second shell (2) away from the first shell (1), a second push rod (13) is slidably arranged in the second shell (2), and two ends of the second push rod (13) respectively extend into the first shell (1) and the driving cylinder (12), a third push rod (14) is slidably arranged in the driving cylinder (12), and the end of the third push rod (14) is driven to move by a driving piston (15).

2. The touch-type travel switch for controlling the direction of liquid according to claim 1, characterized in that: The water inlet hole (4) and the first through hole (7) have consistent coaxiality.

3. The touch-type travel switch for controlling the direction of liquid according to claim 1, characterized in that: The water inlet hole (4) is opened in a convex shape, and the end with a smaller diameter is arranged on the outside, and the first spring (5) and the sliding seat (6) are installed in the end of the water inlet hole (4) with a larger diameter.

4. The touch-type travel switch for controlling the direction of liquid according to claim 1, characterized in that: The first push rod (8) comprises a front rod (81) and a rear rod (82), and the valve ball (10) is mounted on the end of the front rod (81), the front rod (81) and the limit block (9) are clearance-matched, a limit cylinder (16) is arranged in the first housing (1), and the rear rod (82) passes through the limit cylinder (16) and is slidably connected thereto.

5. The touch-type travel switch for controlling the direction of liquid according to claim 4, characterized in that: The rear rod (82) is provided with a groove (83) toward the second push rod (13), and water holes (84) are provided on the upper and lower sides of one end of the groove (83) close to the front rod (81).

6. The touch-type travel switch for controlling the direction of liquid according to claim 1, characterized in that: The first shell (1) and the second shell (2) are both provided with an inwardly convex convex ring (17) on one side where the first shell (1) and the second shell (2) abut against each other, and the second push rod (13) passes through the convex ring (17) and is provided with a top ball (18), and the second push rod (13) is slidably connected to the convex ring (17).

7. The touch-type travel switch for controlling the direction of liquid according to claim 6, characterized in that: A limiting ring (19) is provided on the outer edge surface of the second push rod (13), and the limiting ring (19) is in contact with the driving cylinder (12).

8. The touch-type travel switch for controlling the direction of liquid according to claim 7, characterized in that: A second spring (20) is arranged between the limiting ring (19) and the convex ring (17).

9. The touch-type travel switch for controlling the direction of liquid according to claim 1, characterized in that: The water inlet (4) is connected to a static pressure water pipe (21), and the water outlet (11) is connected to a booster pump via a water outlet pipe (22).

10. The touch-type travel switch for controlling the direction of liquid according to claim 1, characterized in that: One end of the water inlet cylinder (3) and the driving cylinder (12) are respectively embedded and installed in the first shell (1) and the second shell (2), and are connected by threads.

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