CN106939937B

CN106939937B - Antitheft ball valve

Info

Publication number: CN106939937B
Application number: CN201710314079.9A
Authority: CN
Inventors: 王毅黎
Original assignee: Individual
Current assignee: Fatilig (Chongqing) Technology Co.,Ltd.
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2023-05-16
Anticipated expiration: 2037-05-05
Also published as: CN106939937A

Abstract

The invention relates to a valve, in particular to an anti-theft ball valve for a gas meter, which comprises a valve body, a valve core, a valve rod, a valve cover and a key assembly, wherein a left limit column and a right limit column which are arranged on two sides of the valve rod and are symmetrical are arranged on the valve body, the heights of the left limit column are unequal, a spring is arranged in the left limit column, a locking block is fixed at the upper end of the spring, a left key hole coaxial with the left limit column and a right key hole coaxial with the right limit column are arranged on the valve cover, one part of the locking block is positioned in the key hole in the spring groove when the spring is not deformed, the key rod comprises a left key rod and a right key rod, the lengths of the left key rod and the right key rod are matched with the deformation amount of the spring compression, so that the locking block is pressed into the spring groove by twisting the valve cover to open the valve core.

Description

Antitheft ball valve

Technical Field

The invention relates to a valve, in particular to an anti-theft ball valve for gas meter anti-theft.

Background

The ball valve is widely applied to civil life and is used as a main control component in a residential water supply, heating and air supply official system, in order to prevent some users from maliciously defaulting or stealing natural gas after closing an air valve and changing the working mode of the ball valve to avoid the payment of gas cost, the ball valve is used for stopping air supply when the users can automatically close the valve and can not be automatically opened, and special matched keys are needed; for example, an anti-theft magnetic lock type valve (bulletin number CN201475388U, bulletin day 2010.05.19) with patent number 200920195982.9 comprises a valve body mainly composed of a valve body, a valve core, a valve rod, a valve cover and a gland, and a magnetic control mechanism for controlling the valve, wherein the magnetic control mechanism is as follows:

the valve cover is connected to the valve body, the upper end surface of the valve cover is provided with a pin hole, a shearing pin and a spring are sequentially arranged in the pin hole, and the spring enables the shearing pin to keep outwards popping trend;

the gland is sleeved on the valve cover and connected with the valve rod, a limiting hole matched with the shear pin is correspondingly formed in the lower end face, and a magnetic element is arranged in the limiting hole;

the key assembly is sleeved on the gland and is detachably connected, an operation part for human operation is arranged on the key assembly, and a magnetic element is arranged in the key assembly and corresponds to the position of the magnetic element in the gland; when the key assembly is sleeved on the gland, the magnetic element on the gland is repelled by the magnetic element on the key assembly, so that the shearing pin is forced to be separated from the limiting hole.

The anti-theft magnetic lock type valve can be opened by using a special key assembly, but can be opened by using magnetic elements with the same polarity, and the valve is not opened by a person of a gas company, so that the magnetic elements are common and easy to find, and the anti-theft performance of the ball valve is reduced.

Disclosure of Invention

In view of the technical problems in the prior art, the invention provides the anti-theft ball valve with better anti-theft capability, the technology improves the precision of the valve body and the key, and the accurate length of the key rod is required to be matched with the deformation of the spring to open the valve core, so that the anti-theft performance of the ball valve is improved.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

the anti-theft ball valve comprises a valve body, a valve core, a valve rod, a valve cover and a key assembly, wherein the valve cover is connected to the valve body, the valve core is arranged inside the valve body, the upper end of the valve rod is connected to the valve cover, the lower end of the valve rod is connected with the valve core, the key assembly is sleeved on the valve cover to form detachable connection, the key assembly comprises a handheld rod and a key rod extending into the valve cover to open the valve core, a limit column is arranged on the valve body, the valve cover is sleeved outside the limit column to control the rotation opening/closing of the valve core, a spring groove is vertically arranged in the limit column, a spring is placed in the spring groove, and the upper end of the spring is fixedly provided with a locking block sliding in the spring groove; the valve cover is provided with a key hole coaxial with the limit column, and the diameters of the key hole and the spring groove are equal; when the spring is not deformed, the locking block is partially positioned in the spring groove and partially positioned in the key hole; the effective length of the key rod is equal to the depth of the key holes corresponding to each other.

By adopting the technical scheme, the anti-theft ball valve adopts the structure that the spring groove is arranged in the limit column, the spring is placed in the spring groove, and the upper end of the spring is fixedly arranged on the locking block sliding in the spring groove; compared with a magnetic anti-theft ball valve with self-locking function (a valve core is opened by utilizing the principle of like poles repel), the magnetic anti-theft ball valve with self-locking function can be opened easily by using like magnets. The anti-theft ball valve can ensure that fuel gas or water and liquid smoothly pass through the anti-theft ball valve when the anti-theft ball valve is normally used (when the valve core is in an open state), and at the moment, the locking block cannot be coaxial with the key hole or extend into the key hole, and the spring is in a pre-compression state; when the valve is required to be closed, the rotary valve cover is only required to drive the valve core to rotate, but once the valve core is rotated to be in the closed position, the locking block is coaxial with the key hole, so that under the action of the spring, the locking block stretches upwards into the key hole, the relative positions of the valve cover and the valve body are locked, the valve cover cannot rotate, the valve core cannot rotate, and the valve core can only be opened by adopting a matched key assembly if the valve core is required to be rotated again, so that the anti-theft performance is ensured. The valve with the structure is the same as a common valve in closing a valve core, but a special key is needed for opening the valve, so that the spring generates correct deformation quantity to open the ball valve. The effective length of the key lever as referred to in this specification means the actual length of the key hole as a whole.

Further, a left limit column and a right limit column which are arranged on two sides of the valve rod are limited on the valve body, the left limit column and the right limit column have height difference, a left spring groove is vertically arranged in the left limit column, a right spring groove is vertically arranged in the right limit column, a left spring and a right spring are respectively arranged in the left spring groove and the right spring groove, and locking blocks which slide in the left spring groove and the right spring groove are respectively fixed at the upper ends of the left spring and the right spring; the valve cover is provided with a left key hole coaxial with the left limit column and a right key hole coaxial with the right limit column, and the diameters of the left key hole and the left spring groove are equal to the diameters of the right key hole and the right spring groove; when the left spring is not deformed, the locking block is partially positioned in the left spring groove and partially positioned in the left key hole; when the right spring is not deformed, one part of the locking block is positioned in the right spring groove, and the other part of the locking block is positioned in the right key hole; the key rod comprises a left key rod and a right key rod, and the left key rod and the right key rod have a height difference; the effective length of the left key rod is equal to the depth of the left key hole, and the effective length of the right key rod is equal to the depth of the right key hole.

The anti-theft ball valve of this design, the length of left and right key pole is different on the one hand has strengthened the theftproof performance, avoid the ball valve to be opened with other things at will, in addition, because the length of left and right key hole is different, and then the locking piece that needs two different length of mutual matching is to both sides is simultaneously down pressed to appropriate position (the upper plane of locking piece and the upper plane of key hole are flush each other) just can separate valve gap and left and right spacing post, and then do not hinder just can rotate the valve rod and drive the case and open and ventilate when rotatory, to guarantee that the locking piece is under the effect of key pole, the upper plane of locking piece and the upper plane of key hole are flush each other, just need to inject the degree of depth that the effective length of left key pole equals left key hole, the degree of depth that the effective length of right key pole equals right key hole just can guarantee. This places stringent dimensional requirements on the depth of the keyway, the effective length of the mating key stem. Because the deformation quantity generated by the two springs is different, under the premise that key assemblies designed by original factories are not available (key assemblies of valves of different types and batches are stored only by gas companies and are not sold externally), when the valve is closed and the valve is required to be opened, a user cannot know the length of the key rod in a mode of visually and directly measuring the depth of a key hole, and is not easy to know the lengths of two different key rods at the same time; when the key rod is short, the upper part of the locking block is arranged in the key hole, and the valve cover cannot rotate, so that the valve core cannot rotate; when the key rod is long, the lower part of the key rod is arranged in the spring groove, the valve cover cannot rotate, and the valve core cannot rotate; the lock block can be pressed down to the proper position only by the gas company using the original factory designed key assembly, thereby rotating the valve cover and valve core.

Further limited, the left limit column and the right limit column are symmetrically arranged on the valve body, so that the stress is uniform and symmetrical.

Further limited, the height of the left spacing post is lower than the height of the right spacing post, the upper top surfaces of the two integrally form a left low right high step surface, and when the left key rod ejects the locking block out of the left key hole and the right key rod ejects the locking block out of the right key hole, the valve cover can rotate 90 degrees relative to the step surface formed by the left spacing post and the right spacing post.

Further limited, the length of the left key rod is longer than that of the right key rod, because the height of the left limit post is lower than that of the right limit post, the upper plane of the locking block can be completely pressed down to be flush with the upper end surface of the spring groove by the key rod, and then the valve cover can not be blocked during rotation.

Further limited, the left spring groove and the right spring groove are internally provided with spring columns, the left spring and the right spring are sleeved on the spring columns, the height of the spring columns in the left spring groove is equal to the height of the left spring after being compressed, the height of the spring columns in the right spring groove is equal to the height of the right spring after being compressed, the coaxiality of the left spring and the right spring is ensured to be maintained when the left spring and the right spring stretch up and down, excessive loss caused by left and right skew is prevented, and the locking block is not beneficial to being separated from a left key hole and a right key hole to open a valve core.

Further limiting, the left key rod and the right key rod are screw rods and are in threaded connection with the handheld rod, on the one hand, the key rod or the handheld rod is conveniently replaced by adopting threaded connection, on the other hand, the length of the key rod is conveniently and slightly adjusted, because the deformation amount of the spring and the key rod and the locking block can be changed along with accumulation of time, the key rod, the locking block and the spring are matched with each other in height, after the length of the key rod and the locking block is changed, the length of the key rod is required to be changed by adjusting the left key rod and the right key rod, so that the valve core is opened by twisting the valve cover by matching with the spring, and the cost is saved.

Further defined, two symmetrical handles are arranged on the valve cover, and when the valve core is opened in the valve body, the two handles and the horizontal central axis of the valve body are in the same plane. The valve core is opened under the conventional state to allow the valve body to be ventilated, the valve body is closed under the special state, and most of the time when the ball valve is used is in the ventilation state, so that the ball valve is in the open state when being manufactured and off line, the valve core is in the same plane, is convenient to package, has smaller volume and convenient transportation, and reduces the space volume after being installed.

Further limited, the left and right sides of the lower bottom surface of the handheld rod are provided with limiting holes, when the left key rod is inserted into the left key hole and the right key rod is inserted into the right key hole, the handle is inserted into the limiting holes to be positioned, when the lower plane of the handheld rod is propped against the upper plane of the valve cover, the left and right key rods and the locking block are ejected out of the key holes, at the moment, the valve cover can be rotated, and the valve core is twisted to open the valve body.

Further limited, the edges of the left key rod, the right key rod, the left limiting column and the right limiting column are all rounded, because the left key rod and the right key rod are just lower than the locking block to compress the spring, the locking block is positioned in the spring groove, the valve core can be twisted to be closed at the moment, the gas is blocked, friction force between the left key rod, the right key rod, the left limiting column and the right limiting column after chamfering is reduced, and the stirring of the key assembly is facilitated.

Drawings

FIG. 1 is a schematic cross-sectional front view of an anti-theft ball valve in a condition;

FIG. 2 is a schematic front cross-sectional view of an anti-theft ball valve in state two;

FIG. 3 is a schematic top view of an anti-theft ball valve;

fig. 4 is a schematic top view of the key assembly.

Detailed Description

In order that those skilled in the art will better understand the technical solution of the present invention, reference will be made to the following drawings and examples.

The anti-theft ball valve comprises a valve body 1, a valve core 2, a valve rod 3, a valve cover 4 and a key assembly 5, wherein the valve cover 4 is connected to the valve body 1, the valve core 2 is arranged inside the valve body 1, the upper end of the valve rod 3 is connected to the valve cover 4, the lower end of the valve rod 3 is connected with the valve core 2, the key assembly 5 is sleeved on the valve cover 4 to be detachably connected, the key assembly 5 comprises a handheld rod 54 and a key rod extending into the valve cover 4 to open the valve core 2, the valve body 1 is provided with a left limit post 11 and a right limit post 12 which are arranged at two sides of the valve rod 3, the left limit post 11 and the right limit post 12 have a height difference, the valve cover 4 is sleeved outside the left limit post 11 and the right limit post 12 to control the rotation opening/closing of the valve core 2, a left spring groove 111 is vertically arranged in the left limit post 11, a right spring groove 121 is vertically arranged in the right limit post 12, a left spring 112 and a right spring 122 are respectively arranged in the left spring groove 111 and the right spring groove 121, and the left spring 112 and the right spring 122 are respectively arranged in the left spring groove 121 and the right spring groove 122, and the upper ends of the left spring 112 and the right spring 122 are fixedly arranged in the left spring grooves 11 and the right spring grooves 121 and the spring grooves 121; the valve cover 4 is provided with a left key hole 41 coaxial with the left limit column 11 and a right key hole 42 coaxial with the right limit column 12, and the diameters of the left key hole 41 and the left spring groove 111 and the diameters of the right key hole 42 and the right spring groove 121 are equal; when the left spring 112 is not deformed, one part of the locking block 13 is positioned in the left spring groove 111, and the other part is positioned in the left key hole 41; when the right spring 122 is not deformed, one part of the locking block 13 is positioned in the right spring groove 121, and the other part is positioned in the right key hole 42; the key levers include a left key lever 51 and a right key lever 52, the left key lever 51 and the right key lever 52 having a height difference; the effective length of the left key lever 51 is equal to the depth of the left keyhole 41, and the effective length of the right key lever 52 is equal to the depth of the right keyhole 42. The effective length of the key lever as referred to in this specification means the actual length of the key hole as a whole, that is, the length of the key lever which is located at the lower part of the lower plane of the hand lever 54 in the drawing. When the left key rod 51 is completely extended into the left key hole 41, the upper plane of the locking block 13 is pressed down to be level with the upper plane of the left limit post 12, namely, the height of downward compression of deformation of the left spring 112 is equal to the downward sliding height when the upper plane of the locking block 13 is pressed down to the upper plane of the left limit post 11 by the left key rod 51; when the right key lever 52 is inserted into the right key hole 42 to press the lock block 13 down to the level of the upper plane of the lock block 13 and the upper plane of the right limit post 12, the height of the right spring 121 compressed downward by deformation is equal to the sliding height of the upper plane of the lock block 13 pressed down to the upper plane of the right limit post 12 by the right key lever 52.

The left limit column 11 and the right limit column 12 are symmetrically arranged on the valve body 1.

As shown in fig. 4, the height of the left limit post 11 is lower than that of the right limit post 12, the upper top surfaces of the left limit post and the right limit post are integrally formed into a left-low-right-high stepped surface, and the lower bottom surface of the valve cover 4 is formed into a left-high-right-low stepped surface matched with the left-right limit post stepped surface.

The length of the left key rod 51 is longer than that of the right key rod 52, the left key rod and the right key rod are arranged on opposite sides of the handheld rod, and the positions of the left key rod and the right key rod are staggered (as shown in fig. 4), so that the positions of the left key hole and the right key hole on the valve cover are staggered with the two handles to form a certain angle (as shown in fig. 3) in order to match the positions of the left key hole and the right key hole on the valve cover.

The left spring groove 111 and the right spring groove 121 are internally provided with spring columns 14, the left spring 112 and the right spring 122 are sleeved on the spring columns 14, the height of the spring columns 14 in the left spring groove 111 is equal to the compressed height of the left spring 112, and the height of the spring columns 14 in the right spring groove 121 is equal to the compressed height of the right spring 122.

The left key rod 51 and the right key rod 52 are screw rods, are in threaded connection with the handheld rod 54, and the common plane of the left key rod 51 and the right key rod 52 forms a certain included angle with the vertical frontal plane of the key assembly 5.

The valve cover 4 is provided with two symmetrical handles 43, and when the valve core 2 is opened in the valve body 1, the two handles 43 are positioned on the same plane with the horizontal central axis of the valve body 1.

Limiting holes 53 are formed on the left and right sides of the lower bottom surface of the hand-held rod 54, and when the left key rod 51 is inserted into the left key hole 41 and the right key rod 52 is inserted into the right key hole 42, the handle 43 is inserted into the limiting holes 53 to be positioned.

The edges of the left key rod 51, the right key rod 52, the left limit column 11 and the right limit column 12 are all rounded, namely the round edges contacting the matching surface.

When the key assembly is used, the limit holes 53 of the key assembly 5 are aligned with the left key hole 41, the right key rod 52 is aligned with the right key hole 42 and inserted into the limit holes Ji Shoubing, when the lower bottom surface of the key assembly 5 is stably abutted with the upper end surface of the valve cover 4, the plane is rotated by 90 degrees, the valve core 2 below is driven by the valve rod 3 to open the valve body 1 for ventilation, and the specific operation movement mode is as follows: when the left key lever 51 and the right key lever 52 are moved downward by pressing, the lock block 13 moves from the left keyhole 41 of the valve cover 4 into the left spring groove 111, the left spring 112 generates downward deformation under the pressure of the lock block 13, and likewise, the lock block 13 moves from the right keyhole 42 of the valve cover 4 into the right spring groove 121, and the right spring 122 generates downward deformation under the pressure of the lock block 13; along with the different lengths of the left key rod 51 and the right key rod 52, the deformation amounts of the left spring 112 and the right spring 122 are different, so that the heights of the locking blocks 13 extending into the left key hole 41 and the right key hole 42 are different, the length of the left key rod 51 is longer than that of the right key rod 52, the deformation amount of the left spring 112 in the left limit column 11 is larger than that of the right spring 122 in the right limit column 12, the downward pressing height is higher than that of the right spring 122 in the right limit column 12, the left key hole and the right key hole with different lengths can compress the locking blocks 13 with different thicknesses to move downward, and the left key hole and the right key hole are separated, so that the valve cover 4 can twist by 90 degrees to open the valve core 2 for ventilation.

The above description of the anti-theft ball valve provided by the invention is provided in detail, and the description of the specific embodiment is only used for helping to understand the method and the core idea of the invention. It should be noted that it will be apparent to those skilled in the art that the present invention may be modified and practiced in several ways without departing from the principles of the present invention; such improvements and modifications are also intended to be within the scope of the present invention as set forth in the claims.

Claims

1. The utility model provides an anti-theft ball valve, includes valve body, case, valve rod, valve gap and key subassembly, the valve gap is connected on the valve body, and the case sets up inside the valve body, the valve rod upper end is connected on the valve gap, and the valve rod lower extreme is connected with the case, the key subassembly cover presents the connection that can shirk on the valve gap, the key subassembly includes handheld pole and stretches into the inside key pole of opening the case of valve gap, be equipped with spacing post on the valve body, the valve gap cover is in the rotatory open/close of the outside control case of spacing post, and the vertical spring groove that is equipped with in the spacing post, spring has been placed in the spring groove, its characterized in that: the upper end of the spring is fixedly provided with a locking block which slides in the spring groove; the valve cover is provided with a key hole coaxial with the limit column, and the diameters of the key hole and the spring groove are equal; when the spring is not deformed, the locking block is partially positioned in the spring groove and partially positioned in the key hole; the effective length of the key rod is equal to the depth of the key hole corresponding to each other; the valve body is provided with a left limit column and a right limit column which are arranged on two sides of the valve rod, the left limit column and the right limit column have height difference, a left spring groove is vertically arranged in the left limit column, a right spring groove is vertically arranged in the right limit column, a left spring and a right spring are respectively arranged in the left spring groove and the right spring groove, and the upper ends of the left spring and the right spring are respectively fixed with locking blocks sliding in the left spring groove and the right spring groove; the valve cover is provided with a left key hole coaxial with the left limit column and a right key hole coaxial with the right limit column, and the diameters of the left key hole and the left spring groove are equal to the diameters of the right key hole and the right spring groove; when the left spring is not deformed, the locking block is partially positioned in the left spring groove and partially positioned in the left key hole; when the right spring is not deformed, one part of the locking block is positioned in the right spring groove, and the other part of the locking block is positioned in the right key hole; the key rod comprises a left key rod and a right key rod, and the left key rod and the right key rod have a height difference; the effective length of the left key rod is equal to the depth of the left key hole, and the effective length of the right key rod is equal to the depth of the right key hole.

2. The antitheft ball valve of claim 1 wherein: the left limit column and the right limit column are symmetrically arranged on the valve body.

3. The antitheft ball valve of claim 2 wherein: the height of the left limit column is lower than that of the right limit column, and the upper top surfaces of the left limit column and the right limit column integrally form a left-low right-high step surface.

4. A theft-proof ball valve as defined in claim 3, wherein: the length of the left key rod is longer than that of the right key rod.

5. The antitheft ball valve of claim 2 wherein: the left spring groove and the right spring groove are internally provided with spring columns, the left spring and the right spring are sleeved on the spring columns, the height of the spring columns in the left spring groove is equal to the compressed height of the left spring, and the height of the spring columns in the right spring groove is equal to the compressed height of the right spring.

6. An anti-theft ball valve according to claim 2, wherein: the left key rod and the right key rod are screw rods and are in threaded connection with the handheld rod.

7. The antitheft ball valve of claim 2 wherein: two symmetrical handles are arranged on the valve cover, and when the valve core is opened in the valve body, the two handles and the horizontal central axis of the valve body are positioned on the same plane.

8. The antitheft ball valve of claim 2 wherein: the edges of the left key rod, the right key rod, the left limiting column and the right limiting column are rounded.

9. The antitheft ball valve of claim 8 wherein: limiting holes are formed in the left side and the right side of the lower bottom surface of the handheld rod, and when the left key rod is inserted into the left key hole and the right key rod is inserted into the right key hole, the handle is inserted into the limiting holes to be positioned.