A valve for preventing misoperation

Abstract

The present invention discloses a valve for preventing misoperation, comprising a valve body, an end cover is arranged at the middle position of the top of the valve body, a plurality of gears are arranged at the bottom of the end cover, a connecting slide rod is sleeved at the bottom of the outer side of the end cover, an annular rack is arranged on the outer side of the connecting slide rod, a valve cover is arranged at the top of the end cover, a connecting assembly is arranged at the top of the valve cover, and a threaded rod is threadedly connected at the middle position of the top of the valve cover. The present invention enables two groups of limit blocks to support the valve stem through the limit of the limit block, so that the valve stem and the threaded rod are separated from each other. When the valve stem is idle, no matter how it rotates, it can only rotate idly and cannot drive the internal threaded valve stem to move up and down, thereby preventing the person from rotating due to misoperation. When it is necessary to rotate, the limit of the limit block can be released by operating the fixing assembly, so that the slot on the valve stem is combined with the connecting block, and the threaded rod is rotated.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a valve capable of preventing misoperation. Background Art

[0002] In the production sites of petrochemical industry, a large number of valves are needed. In order to save labor, valve handwheels are usually used to operate the valves. At present, the "F" type valve handwheel is widely used for valve opening and closing operations. During operation, the opening part of the "F" handwheel is stuck on the valve handwheel body, and the valve handwheel is driven to rotate by pulling the force rod of the "F" handwheel to achieve the purpose of opening and closing the valve.

[0003] The current valves have certain deficiencies when used;

[0004] Generally, the valves on existing pipelines are directly exposed to the outside world, which is not only convenient for installation and maintenance, but also easy for manual operation of the valves. However, the valves directly exposed to the outside world are easily misoperated by the operators, resulting in unstable closing state of the valves.

[0005] At the same time, when the valve is rotated, it is necessary to rotate it with the valve stem as the center of the circle using a horizontal thrust. However, in actual operation, part of the force acts directly on the valve stem, causing the valve stem to deflect after long-term use, resulting in a gap between the valve stem and the valve, which is prone to water leakage.

[0006] When inspecting the valve, it is necessary to rotate and disassemble multiple sets of bolts, fix the nuts and rotate the bolts, and repeat the operations in sequence. This is not only cumbersome and time-consuming, but also not conducive to large-scale inspection. Summary of the invention

[0007] The object of the present invention is to provide a valve that prevents misoperation, so as to solve the problems raised in the above-mentioned background technology that when the valve is exposed to the outside world, the operator is prone to misoperation; at the same time, when the valve stem is rotated, it is easy to cause the valve stem to deflect, resulting in a gap between the valve and the valve; when the valve is inspected, multiple sets of bolts need to be tightened, which is relatively time-consuming.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve for preventing misoperation, comprising a valve body, an end cover is arranged at the middle position of the top of the valve body, a plurality of gears are arranged at the bottom of the end cover, a connecting slide rod is sleeved on the bottom of the outer side of the end cover, an annular rack is arranged on the outer side of the connecting slide rod, a valve cover is arranged on the top of the end cover, a connecting assembly is arranged on the top of the valve cover, a threaded rod is threadedly connected at the middle position of the top of the valve cover, a connecting block is arranged on the top of the threaded rod, a sealing plug is arranged on the bottom of the threaded rod, and a partition is arranged inside the valve body.

[0009] Preferably, the connecting assembly includes a mounting sleeve, a nut sleeve, an annular frame, a limiting sleeve, a slider and a limiting slide groove, the mounting sleeve is located at the top of the valve cover, limiting slide grooves are arranged on both sides of the mounting sleeve, sliders are arranged inside the two groups of limiting slide grooves, an annular frame is arranged on the side where the two groups of sliders are away from each other, multiple groups of nut sleeves are arranged at the bottom of the annular frame, limiting sleeves are arranged on the tops of both sides of the interior of the mounting sleeve, and a limiting assembly is arranged inside the limiting sleeve.

[0010] Preferably, the limiting assembly includes a valve stem, an extrusion sleeve, a slide groove, an extrusion block, a limit stopper, a connecting rod, a first spring and a slot, the valve stem is located inside the limiting sleeve, slide grooves are provided on both sides of the top of both ends of the valve stem, extrusion sleeves are slidably provided inside the two groups of slide grooves, extrusion blocks and limit stops are slidably provided on the top and bottom of both sides of the valve stem respectively, a connecting rod is provided on one side of the extrusion block and the limit stopper, a first spring is provided on the top and bottom of the two groups of connecting rods close to each other, a slot is provided at the bottom of the valve stem, and fixing components are provided at both ends of the top of the valve stem.

[0011] Preferably, the fixing assembly includes a valve handle, an elastic retaining ring, a second spring, an articulated sleeve, an articulated rod and a mounting rod, the valve handle is located at both ends of the top of the valve stem, two groups of elastic retaining rings are sleeved on the outer side of the valve handle, mounting rods are slidably arranged on both sides of the inside of the valve handle, the outer side of the mounting rod is sleeved with a second spring, an articulated sleeve is sleeved at the middle position of the outer side of the mounting rod, articulated rods are arranged at the bottom of the two groups of articulated sleeves, and the articulated rods and the extrusion sleeve are hinged to each other.

[0012] Preferably, the limiting slide groove is in an inverted J shape, and the limiting slide groove consists of a vertical groove, a horizontal groove and a groove.

[0013] Preferably, one side of the bottom of the extrusion block is inclined.

[0014] Preferably, an annular slide groove is provided at the bottom of the outer side of the end cover, and the connecting slide rod and the annular slide groove are slidably adapted to each other.

[0015] Preferably, a plurality of groups of bolts are arranged at the inner edge of the end cover, and the bolt-connected sliding block is slidably fitted with the end cover.

[0016] Preferably, the connecting block is in the shape of a cube, the cross section of the groove of the card slot is square, and the connecting block and the card slot are adapted to each other.

[0017] Preferably, the gear is located inside the annular rack, and the annular rack and the gear are meshed with each other.

[0018] Compared with the prior art, the present invention provides a valve that prevents misoperation and has the following beneficial effects:

[0019] 1. The present invention uses the limiting function of the limiting blocks to support the valve stem with two groups of limiting blocks, so that the valve stem and the threaded rod are separated from each other. When the valve stem is idle, no matter how it is rotated, it can only rotate idly and cannot drive the internal threaded valve stem to move up and down, thereby preventing personnel from rotating it by mistake. When rotation is required, the limiting function of the limiting blocks can be released by operating the fixing assembly, so that the slot on the valve stem is combined with the connecting block, and the threaded rod can be rotated.

[0020] 2. The present invention utilizes a limit sleeve installed on the mounting sleeve, so that the limit sleeve is always stably maintained at a certain position, thereby limiting the position of the valve stem well. At the same time, when the valve stem encounters a deflection force, the limit sleeve can support the valve stem well to prevent the valve stem from deflecting and prevent a gap from appearing between the threaded rod and the valve body.

[0021] 3. The present invention slides the annular frame along the limiting sliding groove so that the annular frame drives multiple sets of nuts to be sleeved on multiple sets of nuts to limit them, and then rotates the annular rack to move. The annular rack and the multiple sets of gears are meshed with each other, so that the multiple sets of gears rotate at the same time, so that the nuts and bolts rotate with each other, thereby causing the nuts to fall off the bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front cross-sectional view of the present invention;

[0023] Figure 2 It is a front cross-sectional view of the fixing assembly of the present invention;

[0024] Figure 3 It is a front cross-sectional view of the limiting assembly of the present invention;

[0025] Figure 4 A top view of a fixing assembly of the present invention;

[0026] Figure 5 It is a front cross-sectional view of the connection assembly of the present invention;

[0027] Figure 6 It is a side view of the installation sleeve of the present invention.

[0028] In the figure: 1. valve body; 2. limit assembly; 201. valve stem; 202. extrusion sleeve; 203. slide groove; 204. extrusion block; 205. limit stopper; 206. connecting rod; 207. first spring; 208. slot; 3. connecting assembly; 301. mounting sleeve; 302. nut sleeve; 303. annular frame; 304. limit sleeve; 305. slider; 306. limit slide groove; 4. fixing assembly; 401. valve handle; 402. elastic retaining ring; 403. second spring; 404. hinge sleeve; 405. hinge rod; 406. mounting rod; 5. gear; 6. valve cover; 7. connecting block; 8. end cover; 9. connecting slide rod; 10. threaded rod; 11. sealing plug; 12. partition; 13. annular rack. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-6 The present invention provides a technical solution: a valve for preventing misoperation, comprising a valve body 1, an end cover 8 is arranged at the middle position of the top of the valve body 1, a plurality of gears 5 are arranged at the bottom of the end cover 8, a connecting slide rod 9 is sleeved on the bottom of the outer side of the end cover 8, an annular rack 13 is arranged on the outer side of the connecting slide rod 9, and the plurality of gears 5 are driven to rotate at the same time, a valve cover 6 is arranged on the top of the end cover 8, a connecting assembly 3 is arranged on the top of the valve cover 6, a threaded rod 10 is threadedly connected at the middle position of the top of the valve cover 6, a connecting block 7 is arranged on the top of the threaded rod 10, a sealing plug 11 is arranged at the bottom of the threaded rod 10, and a partition 12 is arranged inside the valve body 1.

[0031] As a preferred solution of this embodiment: the connecting component 3 includes a mounting sleeve 301, a nut sleeve 302, an annular frame 303, a limiting sleeve 304, a slider 305 and a limiting slot 306. The mounting sleeve 301 is located at the top of the valve cover 6. Limiting slots 306 are arranged on both sides of the mounting sleeve 301. Sliders 305 are arranged inside the two groups of limiting slots 306. An annular frame 303 is arranged on the side where the two groups of sliders 305 are away from each other. Multiple groups of nut sleeves 302 are arranged at the bottom of the annular frame 303. Limiting sleeves 304 are arranged on the tops of both sides of the interior of the mounting sleeve 301. The interior of the limiting sleeve 304 is provided with a limiting component 2, which can limit the nut to prevent it from rotating at the same time as the bolt.

[0032] As a preferred solution of this embodiment: the limiting component 2 includes a valve stem 201, an extrusion sleeve 202, a slide groove 203, an extrusion block 204, a limiting stopper 205, a connecting rod 206, a first spring 207 and a slot 208. The valve stem 201 is located inside the limiting sleeve 304. Slide grooves 203 are arranged on both sides of the top of both ends of the valve stem 201. The extrusion sleeves 202 are slidably arranged inside the two groups of slide grooves 203. The top and bottom of both sides of the valve stem 201 are respectively slidably arranged with extrusion blocks 204 and limiting stoppers 205. A connecting rod 206 is arranged on one side of the extrusion block 204 and the limiting stopper 205. The top and bottom of the two groups of connecting rods 206 close to each other are provided with a first spring 207. The bottom of the valve stem 201 is provided with a slot 208. The two ends of the top of the valve stem 201 are provided with fixing components 4, so that the valve stem 201 can always be in an idling state.

[0033] As a preferred solution of this embodiment: the fixing component 4 includes a valve handle 401, an elastic retaining ring 402, a second spring 403, an articulated sleeve 404, an articulated rod 405 and a mounting rod 406. The valve handle 401 is located at both ends of the top of the valve stem 201. Two groups of elastic retaining rings 402 are sleeved on the outer side of the valve handle 401. Mounting rods 406 are slidably arranged on both sides of the inside of the valve handle 401. The outer side of the mounting rod 406 is sleeved with a second spring 403. An articulated sleeve 404 is sleeved at the middle position of the outer side of the mounting rod 406. An articulated rod 405 is arranged at the bottom of the two groups of articulated sleeves 404. The articulated rod 405 is hinged to the extrusion sleeve 202 to fix the mounting rod 406.

[0034] As a preferred solution of this embodiment: the limiting slide groove 306 is in an inverted J shape, and the limiting slide groove 306 is composed of a vertical groove, a horizontal groove and a groove, which can make the annular frame 303 in mid-air.

[0035] As a preferred solution of this embodiment: one side of the bottom of the extrusion block 204 is inclined, so that the extrusion block 204 can move horizontally.

[0036] As a preferred solution of this embodiment: an annular slide groove is provided at the bottom of the outer side of the end cover 8, and the connecting slide rod 9 and the annular slide groove are slidably adapted to each other to keep the annular rack 13 rotating stably.

[0037] As a preferred solution of this embodiment: a plurality of groups of bolts are arranged at the inner edge of the end cover 8, and the bolts are slidably matched with the end cover 8 through the connecting slider to prevent the bolts from falling off.

[0038] As a preferred solution of this embodiment: the connecting block 7 is a cube, the cross section of the groove of the slot 208 is square, and the connecting block 7 and the slot 208 are adapted to each other, so that the valve stem 201 can drive the threaded rod 10 to rotate.

[0039] As a preferred solution of this embodiment: the gear 5 is located inside the annular rack 13, and the annular rack 13 and the gear 5 are meshed with each other, and simultaneously drive the multiple groups of gears 5 to rotate.

[0040] Embodiment 1, as Figure 1-4 As shown, when the valve needs to be opened, the two sets of mounting rods 406 are pushed away from each other to squeeze the second spring 403. When the mounting rod 406 moves to the end, the mounting rod 406 is clamped by rotating the elastic clamp ring 402. The moving mounting rod 406 drives the extrusion sleeve 202 to move upward through the hinge rod 405. The extrusion sleeve 202 and the bevel edges of the extrusion block 204 contact each other, so that the extrusion block 204 moves toward the inside of the valve stem 201 to squeeze the extrusion block 204. At this time, the extrusion block 204 drives the limit stopper 205 to move toward the inside of the valve stem 201 through the connecting rod 206. At this time, the limit stopper 205 no longer supports the valve stem 201 in a limiting manner. At this time, the valve stem 201 drives the card slot 208 to combine with the connecting block 7, and the rotating valve stem 201 drives the threaded rod 10 to rotate, so that the switch of the valve can be stably controlled.

[0041] Embodiment 2, as Figure 5-6 As shown, when the interior of the valve body 1 needs to be inspected, the annular frame 303 is first slid inside the limiting slide groove 306 through the slider 305, driving the nut sleeve 302 to move onto the nut, so that the nut sleeve 302 prevents the nut from rotating. At this time, the annular rack 13 is rotated, so that the annular rack 13 drives the gear 5 meshing with it to rotate, and the gear 5 simultaneously drives the bolt to rotate, and relative rotation occurs between the bolt and the nut, causing the nut to move upward until the nut is disengaged, so that multiple sets of nuts can be quickly disassembled at the same time.

[0042] Working principle: First, in normal times, the valve stem 201 and the threaded rod 10 are in a state of being separated from each other, and the limit stopper 205 is located above the limit sleeve 304. At this time, no matter how the valve stem 201 is rotated, the valve stem 201 is always idling, which well prevents the operator from making mistakes and can reserve sufficient time for the operator to think whether the operation is correct;

[0043] When the valve needs to be opened, the two sets of mounting rods 406 are pushed away from each other and clamped by the elastic clamp ring 402. The moving mounting rod 406 drives the extrusion sleeve 202 to move upward through the hinge rod 405 to squeeze the extrusion block 204. At this time, the extrusion block 204 drives the limit stopper 205 to move inside the valve stem 201 through the connecting rod 206. At this time, the limit stopper 205 no longer supports the valve stem 201. At this time, the valve stem 201 drives the card slot 208 to combine with the connecting block 7. The rotating valve stem 201 drives the threaded rod 10 to rotate, so that the opening and closing of the valve can be stably controlled.

[0044] When the valve stem 201 rises and falls, the valve stem 201 always moves inside the limiting sleeve 304. When the valve stem 201 is pushed by the outside, the valve stem 201 will exert the pushing force on the limiting sleeve 304, so that the valve stem 201 always moves up and down stably, and will not cause the threaded rod 10 and the valve body 1 to deviate, effectively preventing the threaded rod 10 and the valve body 1 from having a gap, which may cause the internal liquid to leak.

[0045] When the interior of the valve body 1 needs to be inspected, the annular frame 303 is first slid inside the limiting slide groove 306 through the slider 305, driving the nut sleeve 302 to move onto the nut, so that the nut sleeve 302 prevents the nut from rotating. At this time, the annular rack 13 is rotated, so that the annular rack 13 drives the gear 5 meshing with it to rotate, and the gear 5 simultaneously drives the bolt to rotate, and relative rotation occurs between the bolt and the nut, causing the nut to move upward until the nut is disengaged, so that multiple sets of nuts can be quickly disassembled at the same time.

[0046] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A valve for preventing misoperation, comprising a valve body (1), characterized in that: An end cover (8) is provided at the middle position of the top of the valve body (1), a plurality of gears (5) are provided at the bottom of the end cover (8), a connecting slide rod (9) is sleeved on the bottom of the outer side of the end cover (8), an annular rack (13) is provided on the outer side of the connecting slide rod (9), a valve cover (6) is provided at the top of the end cover (8), a connecting assembly (3) is provided at the top of the valve cover (6), a threaded rod (10) is threadedly connected at the middle position of the top of the valve cover (6), a connecting block (7) is provided at the top of the threaded rod (10), a sealing plug (11) is provided at the bottom of the threaded rod (10), and a partition (12) is provided inside the valve body (1). The connection assembly (3) comprises a mounting sleeve (301), a nut sleeve (302), an annular frame (303), a limiting sleeve (304), a slider (305) and a limiting slide groove (306); the mounting sleeve (301) is located at the top of the valve cover (6); limiting slide grooves (306) are arranged on both sides of the mounting sleeve (301); sliders (305) are arranged inside two groups of limiting slide grooves (306); an annular frame (303) is arranged on the side away from each other of the two groups of sliders (305); a plurality of groups of nut sleeves (302) are arranged at the bottom of the annular frame (303); limiting sleeves (304) are arranged on the tops of both sides of the mounting sleeve (301); and the limiting assembly (2) is arranged inside the limiting sleeve (304); The limiting assembly (2) comprises a valve stem (201), an extrusion sleeve (202), a slide groove (203), an extrusion block (204), a limiting block (205), a connecting rod (206), a first spring (207) and a slot (208); the valve stem (201) is located inside the limiting sleeve (304); slide grooves (203) are arranged on both sides of the top of both ends of the valve stem (201); and extrusion sleeves (202) are slidably arranged inside the two sets of slide grooves (203). The top and bottom of both sides of the valve stem (201) are slidably provided with extrusion blocks (204) and limit blocks (205), one side of the extrusion blocks (204) and the limit blocks (205) is provided with connecting rods (206), the top and bottom of the two groups of connecting rods (206) close to each other are provided with first springs (207), the bottom of the valve stem (201) is provided with a card slot (208), and the two ends of the top of the valve stem (201) are provided with fixing components (4), The fixing assembly (4) comprises a valve handle (401), an elastic snap ring (402), a second spring (403), an articulated sleeve (404), an articulated rod (405) and a mounting rod (406); the valve handle (401) is located at two ends of the top of the valve stem (201); two sets of elastic snap rings (402) are sleeved on the outer side of the valve handle (401); mounting rods (406) are slidably arranged on both sides of the inside of the valve handle (401); the second spring (403) is sleeved on the outer side of the mounting rod (406); an articulated sleeve (404) is sleeved at the middle position of the outer side of the mounting rod (406); articulated rods (405) are arranged at the bottom of the two sets of articulated sleeves (404); the articulated rods (405) and the extrusion sleeve (202) are hinged to each other.

2. A valve for preventing misoperation according to claim 1, characterized in that: The limiting slide groove (306) is in an inverted J shape, and the limiting slide groove (306) is composed of a vertical groove, a horizontal groove, and a groove.

3. A valve for preventing misoperation according to claim 1, characterized in that: One side of the bottom of the extrusion block (204) is inclined.

4. A valve for preventing misoperation according to claim 1, characterized in that: An annular sliding groove is provided at the bottom of the outer side of the end cover (8), and the connecting sliding rod (9) and the annular sliding groove are slidably matched with each other.

5. A valve for preventing misoperation according to claim 1, characterized in that: A plurality of groups of bolts are arranged at the inner edge of the end cover (8), and the bolt-connected sliding block and the end cover (8) are slidably matched.

6. A valve for preventing misoperation according to claim 1, characterized in that: The connection block (7) is in the shape of a cube, the cross section of the groove of the clamping slot (208) is in the shape of a square, and the connection block (7) and the clamping slot (208) are adapted to each other.

7. A valve for preventing misoperation according to claim 1, characterized in that: The gear (5) is located inside the annular rack (13), and the annular rack (13) and the gear (5) are meshed with each other.

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