Stop valve lock and locking stop valve

Abstract

The utility model provides a stop valve lock and a locking stop valve. The stop valve lock comprises a clamping assembly and a locking assembly. The clamping assembly is provided with a clamping position, and the clamping assembly is provided with a first sliding fit part and a first tooth set. The locking assembly comprises a lock body, a lock beam and a movable part. The movable part is movably connected to the lock body, the movable part can move between a first position and a second position, and the movable part is provided with a second tooth set; the lock beam comprises two pins and a bending part connected between the two pins; the lock body comprises a second sliding fit part, and the first sliding fit part and the second sliding fit part are in sliding fit in the circumferential direction of the clamping position; the lock body is provided with two insertion channels, and the insertion pins can be correspondingly inserted into the insertion channels; when the plug pin is located in the insertion channel, the plug pin forces the movable part to be located at the first position and enables the first tooth set to be meshed with the second tooth set. The locking stop valve comprises a stop valve and the stop valve lock used for locking the stop valve. The device is convenient to disassemble and assemble, good in universality and wide in application scene.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially, it relates to a stop valve lock and locking stop valve. BACKGROUND

[0002] The stop valve can be used for oil and gas pipeline, generally including operating hand wheel, screw rod, seat body and valve cover, by rotating hand wheel, drive screw rod rotates on seat body, and then make valve cover move along the axis direction of screw rod to close or open valve by approaching or moving away from valve outlet.

[0003] The stop valve can change the size of valve flow by rotating hand wheel to change the distance of valve cover relative to valve outlet, so the valve cover of the stop valve needs to be stopped stably at any position, in addition, since the opening and closing of oil and gas pipeline involves the safety of the whole oil and gas system, when not receiving the opening and closing instruction of stop valve, the outside personnel is not allowed to twist the stop valve at will.

[0004] The utility model discloses a kind of stop valves with locking function, by the cooperation of ratchet and two locking mechanisms, the rotation of valve can be limited, however, the ratchet and lock tongue of the locking part of this stop valve need to be completely disassembled to stop valve hand wheel and screw rod can be disassembled and assembled, disassembly and assembly are very inconvenient, and the diameter and thread model of different stop valve screw rod are different, and the ratchet can only adapt to one screw rod, and the versatility is poor, cannot be mass-produced, and the cost is high. UTILITY MODEL CONTENTS

[0005] The first purpose of the utility model is to provide a kind of stop valve lock, which is convenient to disassemble and assemble and has good versatility.

[0006] The second purpose of the utility model is to provide a kind of locking stop valve, which is convenient to disassemble and assemble and has good versatility.

[0007] The first purpose of the utility model provides a kind of stop valve lock, which includes clamping assembly and locking assembly;The clamping assembly is provided with a clamping position, and the clamping assembly is provided with a first sliding fitting part and a first tooth group arranged away from the clamping position;The locking assembly includes a lock body, a lock beam and a movable part;The movable part is movably connected to the lock body, and can move between a first position close to the clamping position and a second position away from the clamping position, and the movable part is provided with a second tooth group arranged towards the clamping position;The lock beam includes a bent part and two insertion pins extending in the same direction, the bent part is connected between the extension starting ends of the two insertion pins, and the extension ends of the two insertion pins are separated from each other;The lock body includes a second sliding fitting part, and the first sliding fitting part and the second sliding fitting part are slidably fitted along the circumference of the clamping position;The lock body is provided with two insertion channels, and the two insertion pins can be inserted into the two insertion channels respectively;The second position is located in the insertion channel, and when the insertion pin is located in the insertion channel, the insertion pin forces the movable part to remain in the first position and makes the first tooth group mesh with the second tooth group.

[0008] As can be seen from the above scheme, the clamping assembly of the stop valve lock provided by the scheme can be clamped and fixed to the seat body of the stop valve, and the locking assembly is buckled to the connecting rod of the hand wheel of the stop valve through the lock beam, so that the locking of the stop valve is completed. Since the hand wheel of the stop valve can stay at any angle, and the clamping assembly is relatively fixed, the device can make the locking assembly rotate relative to the clamping assembly in the circumferential direction of the clamping position through the sliding connection of the first sliding fitting part and the second sliding fitting part, so that the lock beam can be adjusted in angle to align one of the connecting rods of the hand wheel for locking. When the lock beam is inserted into the lock body to buckle the connecting rod, the lock beam abuts against the movable piece and forces the movable piece to move from the second position to the first position and remain, so that the second tooth set of the movable piece is engaged with the first tooth set of the clamping assembly, the locking of the clamping assembly and the locking assembly is completed, and the hand wheel is locked. The lock is clamped on the seat body of the stop valve, and the stop valve is locked by locking the connecting rod of the hand wheel of the stop valve. The lock is not limited by the size of the stop valve screw rod, and has good universality.

[0009] Preferably, the lock body is provided with a first circumferentially extending arc surface, and the clamping assembly is provided with a second circumferentially extending arc surface. When the first sliding fitting part and the second sliding fitting part are in sliding fit, the first arc surface cooperates with the second arc surface.

[0010] Therefore, through the cooperation of the first arc surface and the second arc surface, the linearity and stability of the relative movement of the lock body and the clamping assembly along the arc line are ensured, and the locking assembly will not shake when moving in the circumferential direction to adjust the position, thereby eliminating the problem of unstable engagement of the first tooth set and the second tooth set.

[0011] Further, the first sliding fitting part includes at least two sliding pieces distributed in the circumferential direction, and the second sliding fitting part is a slide way extending in the circumferential direction, and the sliding pieces are connected to the slide way in sliding connection; or, the second sliding fitting part includes at least two sliding pieces distributed in the circumferential direction, and the first sliding fitting part is a slide way extending in the circumferential direction, and the sliding pieces are connected to the slide way in sliding connection.

[0012] Therefore, by arranging at least two sliding pieces in the circumferential direction, the linearity and stability of the relative movement of the lock body and the clamping assembly along the arc line are ensured, and the locking assembly will not shake when moving in the circumferential direction.

[0013] Further, the locking assembly further includes a resilient piece, the movable piece is installed in the lock body in a straight line direction, and under the restoring force of the resilient piece, the movable piece tends to move from the first position to the second position; the extension end is provided with a first inclined surface, when the insertion foot is inserted into the insertion channel, the first inclined surface abuts against the movable piece and forces the movable piece to move towards the first position; and / or, the movable piece is provided with a second inclined surface, when the insertion foot is inserted into the insertion channel, the extension end abuts against the second inclined surface and forces the movable piece to move towards the first position.

[0014] Therefore, when the lock beam is not inserted into the lock body, the movable piece moves from the first position to the second position under the restoring force of the elastic piece, so that the first tooth set and the second tooth set are separated from each other, and the locking assembly can slide relative to the clamping assembly to adjust the position; when the lock beam is inserted into the lock body, the first inclined surface and / or the second inclined surface will force the movable piece to move towards the second position, so that the first tooth set and the second tooth set are engaged, and the locking assembly and the clamping assembly are relatively fixed.

[0015] Further, the lock body is provided with a first stud, the head of the first stud faces the clamping position, the movable piece is provided with a mounting hole, the first stud is arranged in the mounting hole, the movable piece can move along the axial direction of the first stud, the first stud is sleeved with an elastic piece, the first end of the elastic piece abuts against one side of the movable piece facing the clamping position, and the second end of the elastic piece abuts against the head of the first stud.

[0016] Therefore, the elastic piece can force the movable piece to move along the axial direction of the first stud from the first position to the second position, and when the lock beam is removed, the first tooth set and the second tooth set are separated, and the locking assembly can move relative to the clamping assembly.

[0017] Further, the clamping assembly comprises a first clamping block, a second clamping block and a second stud, the clamping position is arranged between the first clamping block and the second clamping block, and the second stud passes through the first clamping block and is screwed to the second clamping block.

[0018] Therefore, by twisting the second stud, the first clamping block and the second clamping block can be relatively close to clamp and fix the seat body of the stop valve.

[0019] Further, the clamping assembly further comprises a shielding piece, the shielding piece covers the head of the second stud, the shielding piece is fixed to the first clamping block by a screw, the head of the screw faces the lock body, the lock body is provided with a through hole penetrating the lock body along the axis of the screw, the insertion channel intersects the through hole, and when the insertion pin is inserted into the insertion channel, the insertion pin blocks the screw from the front of the withdrawal direction of the screw.

[0020] Therefore, in order to prevent the clamping assembly from being disassembled by twisting the second stud, the device designs a disassembly prevention structure, the shielding piece covers the head of the second stud to prevent the second stud from being disassembled, and the head of the screw for fixing the shielding piece to the first clamping block faces the lock body, so the screw must be disassembled first when the second stud needs to be disassembled, and the screw can only be disassembled through the through hole penetrating the lock body, and when the lock beam is inserted into the insertion channel of the lock body, the insertion pin of the lock beam blocks the withdrawal direction of the disassembled screw, so as long as the lock beam is locked, it is impossible to loosen the screw to complete the disassembly.

[0021] Further, the pin is provided with a first notch and a second notch arranged in sequence along the inserting direction, the lock body is provided with a lock tongue, and the lock beam is inserted into the lock body to a depth to make the lock tongue cooperate with the first notch or the second notch; the outer wall of the lock body is marked with a first mark and a second mark, the lock beam is connected with an extension plate, when the lock tongue cooperates with the first notch, the extension plate hides the first mark and exposes the second mark, and when the lock tongue cooperates with the second notch, the extension plate hides the second mark and exposes the first mark.

[0022] Therefore, the pin of the lock beam is provided with two insertable depths, and the extension plate on the lock beam hides different marks and exposes another mark at different depths, so that the opening and closing state of the stop valve can be intuitively judged by external personnel.

[0023] Further, the lock body is provided with a first sensor and a second sensor along the inserting direction, the pin is provided with a sensing part, when the lock tongue cooperates with the first notch, the sensing part is located in the sensing range of the first sensor, and when the lock tongue cooperates with the second notch, the sensing part is located in the sensing range of the second sensor.

[0024] Therefore, by arranging the first sensor, the second sensor and the sensing part, the opening and closing state of the stop valve can be converted into a sending signal, so that the control platform can receive the opening and closing information of the current stop valve.

[0025] The utility model discloses a second purpose provides a kind of locking stop valve, including stop valve and stop valve lock, stop valve includes screw rod, hand wheel and seat body, hand wheel includes center seat, outer ring and the connection between center seat and outer ring Several connecting rods, center seat is fixed to screw rod, and screw rod is screwed to seat body;Lock adopts above-mentioned 'a kind of stop valve lock, and clamping component clamps seat body in clamping position, when pin is inserted into insertion channel, bending part is buckled in connecting rod. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure diagram of the stop valve and the stop valve lock of the utility model embodiment.

[0027] Figure 2 It is the structure diagram of the stop valve of the utility model embodiment.

[0028] Figure 3 It is the structure diagram of the first perspective of the stop valve lock of the utility model embodiment.

[0029] Figure 4 It is the structure diagram of the second perspective of the stop valve lock of the utility model embodiment.

[0030] Figure 5 It is the structure diagram of the first perspective of the clamping component of the utility model embodiment.

[0031] Figure 6is a structure diagram of the second perspective view of the clamping assembly of the utility model embodiment.

[0032] Figure 7 is a structure diagram of the first perspective view of the locking assembly of the utility model embodiment.

[0033] Figure 8 is a structure diagram of the second perspective view of the locking assembly of the utility model embodiment.

[0034] Figure 9 is a structure diagram of the locking assembly after removing the lock body shell of the utility model embodiment.

[0035] Figure 10 is a structure diagram of the locking assembly after removing the lock beam of the utility model embodiment. DETAILED DESCRIPTION

[0036] With reference to the drawings, the present embodiment provides a kind of stop valve lock 1 and the stop valve 2 equipped with the stop valve lock 1.Therein stop valve 2 includes screw rod 21, hand wheel 22 and seat body 23, seat body 23 includes upper seat 231, lower seat 232 and be connected between first arc column 233 and second arc column 234 of upper seat 231 and lower seat 232, screw rod 21 is successively screwed in upper seat 231 and lower seat 232, hand wheel 22 includes center seat 221, outer ring 222 and be connected between a plurality of connecting rods 223 of center seat 221 and outer ring 222, center seat 221 is fixed to one end of screw rod 21, the central axis of hand wheel 22 outer ring 222 and the axis of screw rod 21 coincide, operator can be rotated screw rod 21 by rotating hand wheel 22, realize the opening and closing of stop valve 2.

[0037] Stop valve lock 1 includes clamping assembly 11 and locking assembly 12, wherein clamping assembly 11 is provided with clamping site 111, clamping assembly 11 can clamp the seat body 23 of stop valve 2 in clamping site 111.Specifically, as Figures 3 to 6 Indicated, clamping assembly 11 includes first clamping block 112, second clamping block 113 and second stud 114, wherein second stud 114 is provided with two, first arc column 233 between the screw rod 21 of stop valve 2 forms first hole site 24, second arc column 234 and screw rod 21 form second hole site 25, first second stud 114 of clamping assembly 11 is successively screwed in first clamping block 112, passes through first hole site 24 and is screwed in second clamping block 113, second second stud 114 is successively screwed in first clamping block 112, passes through second hole site 25 and is screwed in second clamping block 113, the seat body 23 of stop valve 2 is thereby clamped in the clamping site 111 between first clamping block 112 and second clamping block 113.

[0038] As Figures 3 to 6As shown, the first clamping block 112 in the embodiment is provided with a first sector block 1121, a second sector block 1122 and a third sector block 1123, and the arc-shaped side of the first sector block 1121 and the second sector block 1122 is provided with a second circular arc surface 1124 arranged along the circumferential direction of the clamping position 111. It should be noted that in the embodiment, the circumferential direction of the clamping position 111 is consistent with the circumferential direction of the screw shaft 21. The first sector block 1121 and the second sector block 1122 are connected by two sliding columns 1125, and the side wall of the arc-shaped side of the third sector block 1123 is provided with a first tooth group 1126 protruding away from the clamping position 111.

[0039] The locking assembly 12 includes a lock body 121, a lock beam 122 and a movable piece 123. The side wall of the lock body 121 facing the clamping position 111 is formed with a first circular arc surface 1211 extending along the circumferential direction of the clamping position 111. The lock body 121 is also provided with a slide 1212 extending along the circumferential direction of the clamping position 111. The sliding column 1125 of the clamping assembly 11 is slidingly connected in the slide 1212. When the locking assembly 12 slides relative to the clamping assembly 11 through the cooperation of the sliding column 1125 and the slide 1212, the first circular arc surface 1211 and the second circular arc surface 1124 also slide relative to each other.

[0040] The side of the lock body 121 facing the clamping position 111 is provided with a groove 1213 for accommodating the movable piece 123. The groove 1213 is internally provided with a first stud 1214 having a head portion mounted towards the clamping position 111. The movable piece 123 is provided with a mounting hole 1231, and the first stud 1214 is arranged through the mounting hole 1231 to restrict the movable piece 123 in the groove 1213. The movable piece 123 can move between a first position 31 and a second position 32 along the axial direction of the first stud 1214 through the mounting hole 1231. A resilient member 1215 is sleeved on the first stud 1214, with a first end of the resilient member 1215 abutting against the side of the movable piece 123 facing the clamping position 111, and a second end of the resilient member 1215 abutting against the head portion of the first stud 1214. The restoring force of the resilient member 1215 will force the movable piece 123 to move from the first position 31 to the second position 32 and thus away from the clamping position 111. The side of the movable piece 123 facing the clamping position 111 is provided with a second tooth group 1232 protruding towards the clamping position 111, and the second tooth group 1232 is distributed in the circumferential direction of the clamping position 111.

[0041] As shown in FIG. 6, the first tooth group 1126 of the third sector block 1123 is engaged with the second tooth group 1232 of the movable piece 123, and the first tooth group 1126 and the second tooth group 1232 are in engagement with each other. Figure 1 , Figure 3 and Figure 7As shown, the locking beam 122 comprises a bending portion 1222 and two prongs 1221 extending in the same direction, the bending portion 1222 is connected to the extension starting end of the two prongs 1221, and the extension ends of the two prongs 1221 are separated from each other. The lock body 121 is provided with two insertion channels 1216 corresponding to the two prongs 1221. When the handle 22 is locked, the locking beam 122 is buckled on one of the connecting rods 223 of the handle 22, and the two prongs 1221 of the locking beam 122 are respectively inserted into the two insertion channels 1216 of the lock body 121, and at the same time the locking beam 122 is locked by the lock tongue 1217 arranged inside the lock body 121. The second position 32 of the movable piece 123 is located on the insertion channel 1216, and the extension end of the prong 1221 of the locking beam 122 is provided with a slope 12211 towards the clamping position 111 side. During the process of inserting the prong 1221 into the insertion channel 1216, the slope 12211 will abut against the movable piece 123 and force the movable piece 123 to the first position 31 along the slope 12211. When the movable piece 123 is maintained in the first position 31, the first tooth group 1126 and the second tooth group 1232 are engaged, at this time, the clamping assembly 11 and the locking assembly 12 are fixed to each other. It should be noted that in the "vertical part" of the locking beam 122 in the present embodiment, any part that can have a rotation-stopping cooperation relationship with the "connecting rod 223" belongs to the "bending portion 1222" of the present application, for reference Figure 1 As shown, the part above the dashed line L belongs to the bending portion 1222, and the part below belongs to the prong 1221.

[0042] During use of the present stop valve lock 1, when the handle 22 of the stop valve 2 needs to be fixed at a certain position, the relative position of the locking assembly 12 and the clamping assembly 11 can be adjusted through the sliding connection of the sliding column 1125 and the sliding channel 1212, so that one of the connecting rods 223 of the handle 22 is located between the two insertion channels 1216, and then the locking beam 122 is inserted to lock one of the connecting rods 223 of the handle 22 with the locking assembly 12. With the insertion of the locking beam 122, the movable piece 123 is forced to the first position 31, the first tooth group 1126 and the second tooth group 1232 are engaged, and the locking assembly 12 and the clamping assembly 11 are locked to each other. Since the clamping assembly 11 is fixed to the seat body 23 of the stop valve 2, the handle 22 of the stop valve 2 is finally locked.

[0043] The handle 22 in the present embodiment is uniformly provided with five connecting rods 223. In order to make the adjustment range of the locking assembly 12 cover at least one connecting rod 223 when the handle 22 stops rotating at any angle, the second tooth group 1232 of the movable piece 123 of the present device is arranged to cover a range of 72° of the circumferential angle divided by five, that is, the second tooth group 1232 of the movable piece 123 extends in a range of 72° of the circumference of the clamping position 111.

[0044] In the embodiment, to avoid the disassembly of the clamping assembly 11 by the external personnel without permission, the device is further provided with an anti-disassembly structure, such as Figure 5 and Figure 6 As shown in the figure, the clamping assembly 11 further comprises a shielding piece 115, the first clamping block 112 is provided with a clamping groove 1127 on the side away from the lock body 121, and the first clamping block 112 is provided with a screwing position 1128 on the side toward the lock body 121, the shielding piece 115 is in a strip shape, the first end of the shielding piece 115 is bent to form a buckling position 1151, and the second end of the shielding piece 115 is also bent to form a mounting position 1152. In the assembly process, the buckling position 1151 of the shielding piece 115 is buckled in the clamping groove 1127 of the first clamping block 112, the shielding piece 115 covers and shields the head of the two second studs 114, at the same time, the mounting position 1152 is aligned with the screwing position 1128, the screw 1153 is threaded in the mounting position 1152 and screwed in the screwing position 1128 to fix the shielding piece 115 on the first clamping block.

[0045] Further, the head of the screw 1153 is toward the lock body 121, the lock body 121 is provided with a through hole 1218 penetrating through itself along the axis of the screw 1153, and inside the lock body 121, the insertion channel 1216 intersects the through hole 1218, when the insertion pin 1221 is inserted in the insertion channel 1216, the insertion pin 1221 will be the withdrawal direction when the shielding screw 1153 is disassembled. Only when the locking assembly 12 is unlocked, the insertion pin 1221 is pulled out of the insertion channel 1216, the screw 1153 can be threaded through the through hole 1218 and disassembled.

[0046] In the embodiment, the first insertion pin 1221 of the lock beam 122 is provided with a first notch 12212 and a second notch 12213 along the insertion direction of the insertion channel 1216, the lock body 121 is provided with a locking tongue 1217 inside, the first insertion pin 1221 is connected with an extension plate 1223, and the outer surface of the lock body 121 is marked with two marks 12103 of "on" and "off". In order to enable the external personnel to intuitively judge the on-off state of the current stop valve 2, the operator can choose to lock the locking tongue 1217 in the first notch 12212 or the second notch 12213 when inserting the lock beam 122. When the locking tongue 1217 is locked in the first notch 12212, the extension plate 1223 shields the "off" mark and exposes the "on" mark, and when the locking tongue 1217 is locked in the second notch 12213, the extension plate 1223 shields the "on" mark and exposes the "off" mark. It should be noted that no matter the locking tongue 1217 cooperates with the first notch 12212 or the second notch 12213, the insertion pin 1221 can abut against the movable part 123 and fix the locking assembly 12 and the clamping assembly 11 to each other. In addition, the operator can use the key to insert the key hole 1219 to drive the locking and unlocking of the locking tongue 1217.

[0047] In addition, the lock body 121 is provided with a first sensor 12101 and a second sensor 12102 along the insertion direction, and the second pin 1221 is provided with a sensing piece 12214. In the embodiment, the first sensor 12101 and the second sensor 12102 are both set as Hall elements, and the sensing piece 12214 is set as a magnet. When the lock tongue 1217 cooperates with the first notch 12212, the sensing piece 12214 is located in the sensing range of the first sensor 12101 and activates the first sensing piece 12214. When the lock tongue 1217 cooperates with the second notch 12213, the sensing piece 12214 is located in the sensing range of the second sensor 12102 and activates the second sensing piece 12214. The first sensor 12101 and the second sensor 12102 can generate a model and send a "on" or "off" signal to the outside world so as to collect the opening and closing information of the current stop valve 2.

[0048] The above embodiment only expresses one embodiment of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A stop valve lockset characterized by, The clamping assembly and the locking assembly are provided; The clamping assembly is provided with a clamping site, and the clamping assembly is provided with a first sliding fitting part and a first tooth group arranged away from the clamping site; The locking assembly comprises a lock body, a lock beam and a movable element; The movable element is movably connected to the lock body, and the movable element is movable between a first position close to the clamping site and a second position away from the clamping site, and the movable element is provided with a second tooth group arranged towards the clamping site; The lock beam comprises a bending part and two insertion pins extending in the same direction, the bending part is connected between the extension starting ends of the two insertion pins, and the extension ends of the two insertion pins are separated from each other; The lock body comprises a second sliding fitting part, and the first sliding fitting part and the second sliding fitting part are slidably fitted along the circumferential direction of the clamping site; The lock body is provided with two insertion channels, and the two insertion pins can be respectively inserted into the two insertion channels; The second position is located in the insertion channel, and when the insertion pin is located in the insertion channel, the insertion pin forces the movable element to remain in the first position and makes the first tooth group engage with the second tooth group.

2. A stop valve lock as defined in claim 1, wherein The lock body is provided with a first circular arc surface extending along the circumferential direction, and the clamping assembly is provided with a second circular arc surface extending along the circumferential direction, and when the first sliding fitting part and the second sliding fitting part are slidably fitted, the first circular arc surface and the second circular arc surface are fitted.

3. A stop valve lock as defined in claim 1, wherein The first sliding fitting part comprises at least two sliding elements distributed along the circumferential direction, and the second sliding fitting part is a sliding channel extending along the circumferential direction, and the sliding elements are slidably connected to the sliding channel; Or, The second sliding fitting part comprises at least two sliding elements distributed along the circumferential direction, and the first sliding fitting part is a sliding channel extending along the circumferential direction, and the sliding elements are slidably connected to the sliding channel.

4. A stop valve lock as defined in claim 1, wherein The locking assembly further comprises a resilient element, and the movable element is slidably installed in the lock body in a straight line direction, and under the restoring force of the resilient element, the movable element tends to move from the first position to the second position; The extension end is provided with a first inclined surface, and when the insertion pin is inserted into the insertion channel, the first inclined surface abuts against the movable element and forces the movable element to move towards the first position; And / or; The movable element is provided with a second inclined surface, and when the insertion pin is inserted into the insertion channel, the extension end abuts against the second inclined surface and forces the movable element to move towards the first position.

5. A stop valve lock as defined in claim 4, wherein The lock body is provided with a first threaded stud, the head of the first threaded stud is arranged towards the clamping site, the movable element is provided with a mounting hole, the first threaded stud is arranged in the mounting hole, the movable element is movable along the axial direction of the first threaded stud, the first threaded stud is sleeved with the resilient element, the first end of the resilient element abuts against one side of the movable element towards the clamping site, and the second end of the resilient element abuts against the head of the first threaded stud.

6. A stop valve lock as defined in claim 1, wherein The clamping assembly comprises a first clamping block, a second clamping block and a second threaded stud, the clamping site is arranged between the first clamping block and the second clamping block, and the second threaded stud penetrates through the first clamping block and is screwed to the second clamping block.

7. A stop valve lock as defined in claim 6, wherein The clamping assembly further comprises a shielding piece covering the head of the second stud, the shielding piece being fixed to the first clamping block by a screw, the head of the screw facing the lock body, the lock body being provided with a through hole penetrating the lock body along the axis of the screw, the insertion channel intersecting the through hole, the insertion pin shielding the screw from the front of the withdrawal direction of the insertion pin when the insertion pin is inserted into the insertion channel.

8. A stop valve lock according to any one of claims 1 to 7, wherein The insertion pin is provided with a first notch and a second notch arranged in sequence along the insertion direction, the lock body is provided with a lock tongue, changing the insertion depth of the lock beam into the lock body can make the lock tongue cooperate with the first notch or the second notch; The outer wall of the lock body is marked with a first mark and a second mark, the lock beam is connected with an extension plate, when the lock tongue cooperates with the first notch, the extension plate shields the first mark and exposes the second mark, when the lock tongue cooperates with the second notch, the extension plate shields the second mark and exposes the first mark.

9. A stop valve lock as defined in claim 8, wherein The lock body is provided with a first inductor and a second inductor along the insertion direction, the insertion pin is provided with an inductive part, when the lock tongue cooperates with the first notch, the inductive part is located in the sensing range of the first inductor, when the lock tongue cooperates with the second notch, the inductive part is located in the sensing range of the second inductor.

10. A locking stop valve, comprising a stop valve and a lock, the stop valve comprising a screw rod, a hand wheel and a seat body, the hand wheel comprising a center seat, an outer ring and a plurality of connecting rods connected between the center seat and the outer ring, the center seat being fixed to the screw rod, the screw rod being screwed to the seat body; characterized in that The lock adopts any one of the stop valve locks of claims 1 to 9, the clamping assembly clamps the seat body in the clamping position, and the bent part is buckled on the connecting rod when the insertion pin is inserted into the insertion channel.

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