Lifting mechanism of gas self-closing valve

Abstract

The utility model discloses a lifting mechanism of a gas self-closing valve. The lifting mechanism comprises a self-closing valve cover, a partition seat is arranged in the self-closing valve cover, a lifting rod is slidably connected to the middle of the partition seat, a reset cover is inserted into a groove in the upper end of the lifting rod, an inner cavity is formed in the reset cover, fixing seats are evenly distributed at the bottom of the inner cavity, locking columns are slidably connected to the middles of the fixing seats, and locking holes are evenly distributed in the groove. The ends, away from the center of the reset cover, of the locking columns penetrate through the wall body of the inner cavity and are connected with the adjacent locking holes in an inserted mode, a guide sleeve is arranged on the outer side of the lifting rod, and the guide sleeve and the separation base are installed in a matched mode. The two parts are firmly connected and are not easy to separate due to external interference, and later dismounting operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of gas self-closing valves, in particular to a gas self-closing valve lifting mechanism. Background Art

[0002] The pipeline gas self-closing valve, referred to as the self-closing valve, is installed on the pipeline of the low-pressure gas system. When the pipeline gas supply pressure is under-pressure or over-pressure, it can automatically close the device that must be opened manually without electricity or other external power, and realize the manual opening or closing operation of the pipeline of the self-closing valve through a lifting mechanism. The lifting mechanism of some gas self-closing valves includes an upper cover, a hand cover, a limit plate, a pull rod, a reset spring, an overpressure spring, a safety condom, and a safety helmet. A cylindrical hand cover is fitted on the top of the upper cover; there is an annular rib inside the hand cover, and a sliding groove is distributed circumferentially inside the annular rib. The top of the hand cover is an annular groove, and a clamping groove is opened in the annular groove; the limit plate is a stepped circular ring with a buckle in the axial direction, a reset spring is installed on the large step, and the small step is used for lifting and limiting. The safety condom and the pull rod are installed on the inner step, and an overpressure spring is installed between the side wall of the inner step and the side wall of the safety condom. Spring, the safety condom is cylindrical with an outer step and an inner ring rib, the inner hole and the inner ring rib are used to install the safety helmet, the safety condom and the safety helmet are squeezed together by coaxial sleeve; the upper end of the pull rod is connected with the limit plate by a buckle to realize the connection between the pull rod and the hand cover, and the buckle connection replaces the screw connection, which reduces the difficulty of installing the self-closing valve, improves work efficiency, and has high practicality and safety. However, the gas self-closing valve lifting mechanism adopts a buckle connection to realize the connection between the pull rod and the hand cover. When the staff applies too much external force to the hand cover of the gas self-closing valve lifting mechanism, the buckle clamping part is easily compressed and deformed and loosened, thereby causing separation. Moreover, this buckle connection method adopts an embedded clamping, and the clamping part is located inside the gas self-closing valve lifting mechanism, which makes it inconvenient to disassemble the pull rod and the hand cover in the later stage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a gas self-closing valve lifting mechanism. The device realizes the connection and fixation between the lifting rod of the gas self-closing valve lifting mechanism and the reset cover by elastic plug-in method. The connection between the two is firm, not easily separated by external interference, and convenient for later disassembly, which can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas self-closing valve lifting mechanism, comprising a self-closing valve cover;

[0005] Self-closing valve cover: a partition seat is provided inside, a lifting rod is slidably connected to the middle of the partition seat, a reset cover is inserted in the groove at the upper end of the lifting rod, an inner cavity is opened inside the reset cover, and evenly distributed fixing seats are provided at the bottom of the inner cavity. The middle of the fixing seats are slidably connected with locking columns, and evenly distributed locking holes are opened inside the groove. The ends of the locking columns away from the center of the reset cover pass through the wall of the inner cavity and are plugged into adjacent locking holes. The device realizes the connection and fixation between the lifting rod of the lifting mechanism of the gas self-closing valve and the reset cover by elastic plug-in. The two are firmly connected, not easily separated by external interference, and convenient for later disassembly.

[0006] Furthermore, a guide sleeve is provided on the outer side of the lifting rod, and the guide sleeve is installed in cooperation with the partition seat to improve the vertical movement accuracy of the lifting rod of the gas self-closing valve lifting mechanism.

[0007] Furthermore, an annular seat is provided on the outer side of the lifting rod, and a return spring is provided between the annular seat and the partition seat. The return spring is movably connected to the outer side of the lifting rod to provide auxiliary power for the later reset adjustment of the gas self-closing valve lifting rod.

[0008] Furthermore, evenly distributed limit seats are provided on the outer side of the lifting rod, and the limit seats are installed in cooperation with the separation seats to limit the moving distance of the lifting rod of the gas self-closing valve lifting mechanism when it is lifted up or down.

[0009] Furthermore, a movable seat is provided at one end of the locking column close to the center of the reset cover, and a compression spring is provided between the movable seat and the adjacent fixed seat. The compression spring is movably connected to the outer side of the adjacent locking column, and the locking column is plugged into the adjacent locking hole through the change of the deformation amount of the spring compression elastic force.

[0010] Furthermore, the interior of the reset cover is rotatably connected to a rotating shaft via a bearing, a dial button is provided at the upper end of the rotating shaft, and a rectangular seat is provided at the lower end of the rotating shaft. The rectangular seat is installed in cooperation with the movable seat to apply pressure to the connection between the lifting rod of the gas self-closing valve lifting mechanism and the reset cover.

[0011] Furthermore, evenly distributed slots are provided on the outer side of the self-closing valve cover, and an anti-accidental-touch screen is inserted between the slots to prevent outsiders from accidentally pressing the reset cover, thereby changing the internal opening and closing state of the gas self-closing valve.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the gas self-closing valve lifting mechanism has the following advantages:

[0013] When installing the lifting rod and the reset cover of the gas self-closing valve, the reset cover slides vertically along the groove of the lifting rod to its bottom, thereby limiting the horizontal connection between the lifting rod and the reset cover, and the compressive elastic force of the compression spring makes the moving seat always contact with the rectangular seat, and the dial button is rotated 90 degrees to change the position of the two opposite surfaces of the rectangular seat with a smaller spacing and the two opposite surfaces with a larger spacing contact with the corresponding moving seat, thereby controlling the plug-in relationship between the locking column and the corresponding locking hole, and the locking column is plugged into the adjacent locking hole to achieve complete connection and limitation between the lifting rod and the reset cover, and the subsequent disassembly is carried out according to the same principle, and the connection and fixation between the lifting rod and the reset cover of the lifting mechanism of the gas self-closing valve is achieved by elastic plug-in. The two are firmly connected and not easily separated by external interference, and the subsequent disassembly operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the reset cover of the utility model;

[0017] Figure 4 This is an enlarged structural diagram of point A of the utility model.

[0018] In the figure: 1 self-closing valve cover, 2 partition seat, 3 lifting rod, 4 guide sleeve, 5 reset spring, 6 annular seat, 7 limit seat, 8 reset cover, 9 fixed seat, 10 locking column, 11 compression spring, 12 movable seat, 13 rectangular seat, 14 rotating shaft, 15 dial button, 16 anti-accidental touch blocking net. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 , This embodiment provides a technical solution: a gas self-closing valve lifting mechanism, including a self-closing valve cover 1;

[0021] Self-closing valve cover 1: a partition seat 2 is provided inside the partition seat 2, a lifting rod 3 is slidably connected to the middle of the partition seat 2, a reset cover 8 is inserted into the groove at the upper end of the lifting rod 3, an inner cavity is provided inside the reset cover 8, a uniformly distributed fixing seat 9 is provided at the bottom of the inner cavity, a locking column 10 is slidably connected to the middle of the fixing seat 9, a uniformly distributed locking hole is provided inside the groove, the end of the locking column 10 away from the center of the reset cover 8 passes through the wall of the inner cavity and is inserted into the adjacent locking hole, and the locking column 10 is close to the reset cover A movable seat 12 is provided at one end of the center of 8, and a compression spring 11 is provided between the movable seat 12 and the adjacent fixed seat 9. The compression spring 11 is movably sleeved with the outer side of the adjacent locking column 10. The interior of the reset cover 8 is rotatably connected with a rotating shaft 14 through a bearing. A dial button 15 is provided at the upper end of the rotating shaft 14, and a rectangular seat 13 is provided at the lower end of the rotating shaft 14. The rectangular seat 13 is installed in cooperation with the movable seat 12. When installing the lifting rod 3 of the gas self-closing valve and the reset cover 8, firstly, the dial button 15 is used to surround the reset cover 8. The axis of the rotating shaft 14 rotates 90 degrees, so that the two opposite surfaces of the rectangular seat 13 with a smaller spacing contact the corresponding moving seat 12, and the locking column 10 enters the inner cavity through the compression elastic force of the compression spring 11, and then the reset cover 8 slides vertically down along the groove of the lifting rod 3 to its bottom. At this time, the locking column 10 is horizontally aligned with the adjacent locking hole, and then the dial button 15 is rotated 90 degrees to make the two opposite surfaces of the rectangular seat 13 with a larger spacing contact the corresponding moving seat 12. In this process, the moving seat 12 is subjected to the pressure of the rectangular seat 13, and the compression spring 11 contracts, so that the locking column 10 is plugged into the adjacent locking hole, thereby realizing the complete connection and limiting between the lifting rod 3 and the reset cover 8, and the later disassembly is carried out in reverse according to the same principle, which is convenient to operate. The gas self-closing valve lifting mechanism realizes the connection and fixation between the lifting rod 3 and the reset cover 8 of the gas self-closing valve lifting mechanism by elastic plug-in mode, and the connection between the two is firm, not easy to be separated by external interference, and the later disassembly operation is convenient;

[0022] Among them, a guide sleeve 4 is provided on the outer side of the lifting rod 3, and the guide sleeve 4 is installed in cooperation with the partition seat 2. An annular seat 6 is provided on the outer side of the lifting rod 3, and a return spring 5 is provided between the annular seat 6 and the partition seat 2. The return spring 5 is movably sleeved with the outer side of the lifting rod 3. Evenly distributed limit seats 7 are provided on the outer side of the lifting rod 3, and the limit seats 7 are installed in cooperation with the partition seat 2. Evenly distributed slots are opened on the outer side of the self-closing valve cover 1, and an anti-mistaken touch blocking net 16 is inserted between the slots. The gas self-closing valve lifting mechanism changes the gas pressure in the self-closing valve so that the lifting rod 3 moves vertically up and down along the partition seat 2, and the vertical movement of the lifting rod 3 is guided by the guide sleeve 4 to improve its operation accuracy. To ensure the accuracy of the gas self-closing valve, when the lifting rod 3 of the gas self-closing valve lifting mechanism moves vertically upward or downward, the lifting rod 3 drives the annular seat 6 to move synchronously, and the reset spring 5 adaptively elastically stretches or contracts, and the corresponding stretching or contraction elastic force of the reset spring 5 provides auxiliary power for the later reset adjustment of the gas self-closing valve lifting rod, and the vertical movement interception between the limit seat 7 on the lifting rod 3 and the partition seat 2 is used to limit the moving distance of the lifting rod 3. The anti-mistaken touch blocking net 16 inserted on the outside of the self-closing valve cover 1 wraps and protects the lifting part of the gas self-closing valve to prevent outsiders from accidentally pressing the reset cover 8, thereby changing the internal opening and closing status of the gas self-closing valve.

[0023] The working principle of a gas self-closing valve lifting mechanism provided by the utility model is as follows: when installing the lifting rod 3 and the reset cover 8 of the gas self-closing valve, first rotate the dial button 15 90 degrees around the axis of the rotating shaft 14, so that the two opposite surfaces of the rectangular seat 13 with a smaller spacing are in contact with the corresponding moving seat 12, and the compression elastic force of the compression spring 11 is used to make the locking column 10 enter the inner cavity, and then slide the reset cover 8 vertically down along the groove of the lifting rod 3 to its bottom, at this time, the locking column 10 is horizontally aligned with the adjacent locking hole, and then rotate the dial button 15 90 degrees to make the two opposite surfaces of the rectangular seat 13 with a larger spacing are in contact with the corresponding moving seat 12. In this process, the moving seat 12 is subjected to the pressure of the rectangular seat 13, and the compression spring 11 contracts, so that the locking column 10 is plugged into the adjacent locking hole, thereby realizing the complete connection and limiting between the lifting rod 3 and the reset cover 8, and the later disassembly is carried out through the same principle. When the lifting rod 3 of the gas self-closing valve lifting mechanism moves up or down vertically along the partition seat 2 through the change of the gas pressure in the self-closing valve, the lifting rod 3 is guided by the guide sleeve 4 to improve its operation accuracy. When the lifting rod 3 of the gas self-closing valve lifting mechanism moves up or down vertically, the lifting rod 3 drives the annular seat 6 to move synchronously, and the reset spring 5 elastically stretches or contracts adaptively, and the corresponding stretching or contraction elastic force of the reset spring 5 provides auxiliary power for the later reset adjustment of the gas self-closing valve lifting rod, and the vertical movement interception between the limit seat 7 on the lifting rod 3 and the partition seat 2 is carried out to limit the moving distance of the lifting rod 3. The anti-mistaken touch blocking net 16 inserted on the outside of the self-closing valve cover 1 wraps and protects the lifting part of the gas self-closing valve to prevent outsiders from accidentally pressing the reset cover 8, thereby changing the internal opening and closing condition of the gas self-closing valve.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A gas self-closing valve lifting mechanism, characterized in that: It includes a self-closing valve cover (1); Self-closing valve cover (1): a partition seat (2) is provided inside the partition seat (2), a lifting rod (3) is slidably connected to the middle of the partition seat (2), a reset cover (8) is inserted into the groove at the upper end of the lifting rod (3), an inner cavity is provided inside the reset cover (8), and evenly distributed fixing seats (9) are provided at the bottom of the inner cavity. The middle of the fixing seats (9) are slidably connected to locking columns (10), and evenly distributed locking holes are provided inside the groove. The end of the locking column (10) away from the center of the reset cover (8) passes through the wall of the inner cavity and is inserted into the adjacent locking hole.

2. A gas self-closing valve lifting mechanism according to claim 1, characterized in that: A guide sleeve (4) is provided on the outer side of the lifting rod (3), and the guide sleeve (4) is installed in cooperation with the partition seat (2).

3. A gas self-closing valve lifting mechanism according to claim 1, characterized in that: An annular seat (6) is provided on the outer side of the lifting rod (3), a return spring (5) is provided between the annular seat (6) and the partition seat (2), and the return spring (5) is movably sleeved with the outer side of the lifting rod (3).

4. A gas self-closing valve lifting mechanism according to claim 1, characterized in that: The outer side of the lifting rod (3) is provided with evenly distributed limiting seats (7), and the limiting seats (7) are installed in coordination with the separating seat (2).

5. A gas self-closing valve lifting mechanism according to claim 1, characterized in that: The locking column (10) is provided with a movable seat (12) at one end close to the center of the reset cover (8), and a compression spring (11) is provided between the movable seat (12) and the adjacent fixed seat (9), and the compression spring (11) is movably sleeved with the outer side of the adjacent locking column (10).

6. A gas self-closing valve lifting mechanism according to claim 5, characterized in that: The interior of the reset cover (8) is rotatably connected to a rotating shaft (14) via a bearing, the upper end of the rotating shaft (14) is provided with a dial button (15), the lower end of the rotating shaft (14) is provided with a rectangular seat (13), and the rectangular seat (13) is installed in cooperation with the moving seat (12).

7. A gas self-closing valve lifting mechanism according to claim 1, characterized in that: The outer side of the self-closing valve cover (1) is provided with evenly distributed slots, and an anti-mistaken-touch blocking net (16) is inserted between the slots.

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