CN210949962U - Gate valve with invisible anti-theft function - Google Patents

Abstract

The utility model discloses a take gate valve of stealthy theftproof function, including the valve body, with the valve gap that the valve body is connected, connect the gland on the valve gap and can rotate and then control the valve rod of plywood upper and lower removal, its characterized in that: the valve rod comprises an upper valve rod and a lower valve rod, the lower valve rod is rotatably connected with the valve cover, the lower end of the lower valve rod is connected with the rubber plate, the upper end of the lower valve rod is provided with a first hole and a special-shaped groove communicated with the first hole, the first hole is coaxial with the lower valve rod, a spring is arranged in the first hole, a connecting block is arranged in the special-shaped groove in a sliding and matching mode, and the spring acts on the connecting block; the upper valve rod is rotatably arranged on the pressure cover through a pressure ring, a hand wheel is sleeved on the upper valve rod, a second hole coaxial with the upper valve rod is formed in the upper valve rod, and threads are arranged in the middle of the second hole; the gate valve is consistent with a common gate valve in appearance, can effectively reduce the risk that the anti-theft valve special for installation is artificially damaged and opened by a special imitation tool, and has higher safety performance.

Description

Gate valve with invisible anti-theft function

Technical Field

The utility model relates to a take gate valve of stealthy theftproof function of opening belongs to valve technical field.

Background

The gate valve is a shutter plate, the moving direction of the shutter plate is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed, the gate valve is not suitable for different gate parameters, the gate valve is usually 5 degrees, and the medium temperature is not high and is 2 degrees 52'. The manufacturability is improved, and the deviation of the angle of the sealing surface in the machining process is compensated, and the gate plate is called an elastic gate plate.

When the gate valve is closed, the sealing surface can be sealed only by medium pressure, namely, the sealing surface of the gate plate is pressed to the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, namely, the gate valve is self-sealed. Most gate valves are forcedly sealed, namely, when the valves are closed, the gate plates are forced to press the valve seats by external force so as to ensure the sealing performance of the sealing surfaces.

The motion mode is as follows: the gate plate of the gate valve moves linearly along with the valve rod, which is also called a rising stem gate valve. Usually, the lifting rod is provided with trapezoidal threads, and the rotating motion is changed into the linear motion, namely the operation torque is changed into the operation thrust force through a nut at the top end of the valve and a guide groove on the valve body. When the valve is opened, when the lifting height of the gate plate is equal to 1 of the drift diameter of the valve: at 1 time, the passage of fluid is completely clear, but in operation, this position is not monitored. In actual use, the vertex of the valve rod is used as a mark, namely, the opening and closing position is used as the full opening position. To account for the occurrence of lock-up due to temperature changes, the valve was opened to the top position and then reversed 1/2-1 cycles to assume the fully open valve position. Thus, the fully open position of the valve is determined by the position (i.e., stroke) of the gate plate, and a gate valve stem nut is provided on the gate plate, and rotation of the hand wheel rotates the valve stem to lift the gate plate.

At present, the gate valve used for the drainage system is provided with a valve anti-theft device which is designed by adopting a mechanical structure, wherein the valve anti-theft device is opened and closed by adopting a special mechanical tool, the valve anti-theft device is opened and closed by adopting a magnetic lock device, the valve anti-theft device is provided with a special opening tool matched with the magnetic lock device, the valve is designed by adopting the mechanical structure, the valve can be seen from the appearance, and the special opening tool has the defects of easy imitation, easy damage and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the theftproof of valve among the prior art and open the device and can follow the appearance at a glance and see out, the specialized tool that leads to using is easily imitated, the valve is destroyed easily for the lower shortcoming of security of gate valve provides a take gate valve of stealthy theftproof function of opening, and this gate valve is unanimous with ordinary gate valve in the outward appearance, can effectual reduction installation dedicated burglary-resisting valve by the risk of artificial destruction and imitation specialized tool opening, has higher security performance.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the basic idea of the utility model is that:

the gate valve with the invisible anti-theft function comprises a valve body, a sleeve, a limiting screw, an O-shaped sealing ring, a rubber plate, a lower valve rod, a valve cover, a gland, an upper valve rod, a spring, a connecting block, a pressure rod and a hand wheel; the valve body has left and right valve seats on two sides to match the rubber plate, the valve rod nut is fixed with the rubber plate, the lower valve rod is connected with the valve rod nut through trapezoidal thread, the valve cover is connected with the valve body, the middle is sealed by rubber sealing ring, the upper end of the valve cover is provided with thrust bearing for fixing the lower valve rod, the valve cover is connected with the gland, the middle is sealed by rubber sealing ring, the lower valve rod is sealed with the gland by two O-shaped sealing rings, the middle of the upper end of the lower valve rod is provided with a hole (first hole) which is internally provided with a spring, the middle of the upper end of the lower valve rod is also provided with a special-shaped groove which is the same as the lower valve rod, the connecting block can move up and down in the groove, the middle of the upper valve rod is provided with a hole (second hole), the middle section is provided with thread, the pressure rod is connected with the upper valve rod through thread, the upper valve rod, the upper valve rod can be driven to rotate by the rotation of the hand wheel; the top of the upper valve rod is provided with threads, the hexagon bolt and the upper valve rod are connected through threads to press the hand wheel, under the normal condition, the connecting block is pressed down by the pressing rod, when the hand wheel is rotated, the upper valve rod is rotated, the lower valve rod cannot be rotated together, and the valve cannot be opened and closed normally. When operating personnel operated the on-off valve, need pull down hexagon bolt with the spanner, moved up with specialized tool anticlockwise rotation depression bar, the connecting block upwards moves under the spring force effect and is connected with last valve rod, and at this moment rotatory hand wheel drives the valve rod and rotates, and it is rotatory that the valve rod drives down the valve rod through the connecting block to go up the valve rod, and lower valve rod passes through trapezoidal thread and drives the offset plate and move up and down to realize opening and close of valve. The sleeve connected with the valve body can slide along the outer wall and is sealed by an O-shaped sealing ring, and the sleeve is connected and limited by a limiting screw rod and a nut.

Particularly, the utility model discloses specific scheme is as follows:

the utility model provides a take gate valve of stealthy theftproof function, includes the valve body, the valve gap of being connected with the valve body, connects gland on the valve gap and can rotate and then control the valve rod of upper and lower removal of offset plate, its characterized in that: the valve rod comprises an upper valve rod and a lower valve rod, the lower valve rod is rotatably connected with the valve cover, the lower end of the lower valve rod is connected with the rubber plate, the upper end of the lower valve rod is provided with a first hole and a special-shaped groove communicated with the first hole, the first hole is coaxial with the lower valve rod, a spring is arranged in the first hole, a connecting block is arranged in the special-shaped groove in a sliding and matching mode, and the spring acts on the connecting block; go up the valve rod and rotate through the clamping ring and install on the gland, go up the cover on the valve rod and be equipped with the hand wheel, go up be equipped with on the valve rod rather than with the second hole of axle center, second hole middle part is equipped with the screw thread, it is equipped with first dysmorphism groove to go up the valve rod lower extreme, first dysmorphism groove with the second hole communicates with each other, the connecting block can remove between dysmorphism groove and first dysmorphism groove, the downthehole depression bar that has set through the screw thread of second, the depression bar can be screwed up or screw down through specialized tool, it has hexagon bolt to go up valve rod end threaded connection, hexagon bolt installs the back and presses on the hand wheel.

The hand wheel is provided with an inner square, the upper valve rod is provided with an outer square, and the hand wheel is sleeved on the upper valve rod through the inner square and the outer square.

Wherein, the upper end of the pressure lever is provided with a convex polygonal structure corresponding to the concave polygonal structure on the special tool.

The special-shaped groove and the first special-shaped groove are polygonal grooves, and the connecting block is matched with the polygonal grooves.

Further preferably, a sleeve is sleeved at the inlet of the left end of the valve body coaxially, the sleeve can move left and right after being sleeved at the inlet of the left end of the valve body, an O-shaped sealing ring is arranged between the valve body and the wall of the sleeve, and the sleeve and the valve body are limited through a limiting device.

The limiting device comprises a limiting screw and a nut, the limiting screw is a bolt, a limiting plate is arranged on the valve body, the nut is fixed on the sleeve, and the bolt can be screwed with the nut after penetrating through the limiting plate.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a use specialized tool to make the connecting block between the upper and lower valve rod throw off the back, install the hex bolts on the hand wheel on the upper valve rod, make its whole and ordinary gate valve not have difference, but the hand wheel of rotation, can't open and close the valve, only use specialized tool to move the depression bar and make the connecting block connect the upper and lower valve rod after, can just make the lower valve rod rotate, and then make the offset plate reciprocate, realize the opening and closing of valve; only special managers can operate the gate valve, effective management is achieved, non-managers are prevented from operating at will, the risk that the anti-theft valve special for installation can be effectively reduced and is manually damaged and a special imitation tool is opened is reduced, and the safety performance of the gate valve is higher.

2. The utility model discloses a one end at the valve body sets up can gliding sleeve pipe to and carry out spacing stop device with the sleeve pipe, can make the gate valve when using, need not add an expansion bend in addition, the gate valve collects valve and expansion bend function in an organic whole, has reduced the cost of installation, change, maintenance, simultaneously, only need in the installation with the other end contact pipe network of sleeve pipe and gate valve can, more convenient in the installation, need not carry out the connection several times, promptly: the expansion piece is connected to the pipe network, and the valve is connected to the pipe network;

more importantly, through setting up the sleeve pipe that can slide, stress that produces when can effectual elimination valve expend with heat and contract with cold.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of the special tool of the present invention.

Fig. 3 is a schematic view of the overall structure of embodiment 2 of the present invention.

The reference numbers of the valve body 1, the rubber plate 2, the sleeve 3, the limit screw 4, the nut 5, the valve rod nut 6, the O-shaped sealing ring 7, the lower valve rod 8, the flange gasket 9, the valve cover 10, the hexagon socket head cap screw 11, the special-shaped groove 12, the thrust bearing 13, the first special-shaped groove 14, the spring 15, the connecting block 16, the pressing ring 17, the pressing rod 18, the upper valve rod 19, the hand wheel 20, the hexagon bolt 21, the special tool 22, the pressing cover 23 and the connecting flange 24.

Detailed Description

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

A gate valve with a hidden anti-theft function comprises a valve body 1, a valve cover 10 connected with the valve body 1, a gland 23 connected on the valve cover 10 and a valve rod capable of rotating to control a rubber plate 2 to move up and down; in this embodiment, the valve rod includes an upper valve rod 19 and a lower valve rod 8, the lower valve rod 8 is rotatably connected with a valve cover 10, the lower end of the lower valve rod 8 is connected with the rubber plate 2, the upper end of the lower valve rod 8 is provided with a first hole and a special-shaped groove 12 communicated with the first hole, the first hole is coaxial with the lower valve rod 8, a spring 15 is arranged in the first hole, a connecting block 16 is arranged in the special-shaped groove 12 in a sliding manner, and the spring 15 acts on the connecting block 16; go up valve rod 19 and rotate through clamping ring 17 and install on gland 23, go up the cover and be equipped with hand wheel 20 on valve rod 19, go up and be equipped with on valve rod 19 rather than the second hole with the axle center, second hole middle part is equipped with the screw thread, it is equipped with first dysmorphism groove 14 to go up the 19 lower extreme of valve rod, first dysmorphism groove 14 with the second hole communicates with each other, connecting block 16 can remove between dysmorphism groove 12 and first dysmorphism groove 14, the second is downthehole to have a depression bar 18 through the screw thread, depression bar 18 can be screwed up or unscrewed through specialized tool 22, it has hexagon bolt 21 to go up 19 tip threaded connection of valve rod, the back pressure is in after hexagon bolt 21 has installed on hand wheel 20.

In practice, the rubber plate 2 is located in the valve body 1, the rubber plate 2 can be matched with a left valve seat and a right valve seat in the valve body 1 to realize sealing of the valve, the lower valve rod 8 is connected with the rubber plate 2 through the valve rod nut 6, and the lower valve rod 8 is connected with the valve rod nut 6 through the trapezoidal thread; the lower valve rod 8 is connected with a valve cover 10 through a thrust bearing 13, and an O-shaped sealing ring 7 is arranged between the valve cover 10 and a gland 23.

A middle flange gasket 9 is arranged between the valve body 1 and the valve cover 10; the valve body 1 is connected with the valve cover 10 through an inner hexagon screw 11; the gland 23 is also connected with the valve cover 10 through the socket head cap screw 11.

An inner square is arranged on the hand wheel 20, an outer square is arranged on the upper valve rod 19, and the hand wheel 20 is sleeved on the upper valve rod 19 through the inner square and the outer square; the inner square is a square hole formed in the hand wheel 20, the outer square is a square part formed in the upper valve rod 19, the square part can be matched with the square hole, and therefore when the hand wheel 20 is rotated, the upper valve rod 19 can rotate along with the hand wheel 20.

Wherein, the upper end of the pressure lever 18 is provided with a convex polygon structure corresponding to the concave polygon structure of the special tool 22, so that the pressure lever 18 can be rotated only by the special tool 22 with the concave polygon structure, and the pressure lever 18 is lifted or lowered.

Wherein, the special-shaped groove 12 and the first special-shaped groove 14 are polygonal grooves, and the connecting block 16 is matched with the polygonal grooves; in actual use, the shaped groove 12 and the first shaped groove 14 may be three-sided, four-sided or five-sided; as long as the connecting block 16 is simultaneously located in the profile groove 12 and the first profile groove 14, the upper valve rod 19 and the lower valve rod 8 are connected, and when the upper valve rod 19 is rotated, the connecting block 16 transmits force to enable the lower valve rod 8 to rotate along with the upper valve rod 19.

Therefore, in practical use, the pressure lever 18 can only be moved by the special tool 22, and meanwhile, the hand wheel 20 and the upper valve rod 19 are fixed by pressing the hexagon bolt 21 on the hand wheel 20, so that the shape of the gate valve is basically consistent with that of a common valve; however, since the pressing rod 18 is arranged to push the connecting block 16 in the special-shaped groove 12, so that the connecting block 16 is separated from the first special-shaped groove 14, the connecting block 16 reaches a balanced state under the action of the spring 15 and the pressing rod 18; thus, when the hand wheel 20 is rotated, the upper valve rod 19 can rotate, and the lower valve rod 8 cannot rotate; when the valve needs to be operated, firstly, the hexagon bolt 21 is taken down, the pressing rod 18 is screwed by using the special tool 22, so that the pressing rod 18 moves upwards, at the moment, the connecting block 16 moves upwards into the first special-shaped groove 14 on the upper valve rod 19 under the action of the spring 15, and at the moment, the connecting block 16 is positioned in the special-shaped groove 12 and the first special-shaped groove 14; the hand wheel 20 is rotated, so that the upper valve rod 19 and the lower valve rod 8 can synchronously rotate, the rubber plate 2 can move, and opening and closing of the gate valve are further realized.

Example 2

The embodiment is further optimized on the basis of the embodiment 1, in the embodiment, a sleeve 3 is coaxially sleeved at the inlet of the left end of the valve body 1, the sleeve 3 is sleeved at the inlet of the left end of the valve body 1 and can move left and right, an O-shaped sealing ring 7 is arranged between the wall of the valve body 1 and the wall of the sleeve 3, and the sleeve 3 and the valve body 1 are limited through a limiting device.

Further optimize, stop device includes stop screw 4 and nut 5, stop screw 4 is a bolt, be equipped with the limiting plate on the valve body 1, nut 5 is fixed on sleeve pipe 3, the bolt can close soon with nut 5 after passing the limiting plate.

In practical use, the end of the sleeve 3 and the other end of the valve body 1 are provided with connecting flanges 24, which are convenient for connecting into a pipe network.

Claims (6)

1. The utility model provides a take gate valve of stealthy theftproof function, includes the valve body, the valve gap of being connected with the valve body, connects gland on the valve gap and can rotate and then control the valve rod of upper and lower removal of offset plate, its characterized in that: the valve rod comprises an upper valve rod and a lower valve rod, the lower valve rod is rotatably connected with the valve cover, the lower end of the lower valve rod is connected with the rubber plate, the upper end of the lower valve rod is provided with a first hole and a special-shaped groove communicated with the first hole, the first hole is coaxial with the lower valve rod, a spring is arranged in the first hole, a connecting block is arranged in the special-shaped groove in a sliding and matching mode, and the spring acts on the connecting block; go up the valve rod and rotate through the clamping ring and install on the gland, go up the cover on the valve rod and be equipped with the hand wheel, go up be equipped with on the valve rod rather than with the second hole of axle center, second hole middle part is equipped with the screw thread, it is equipped with first dysmorphism groove to go up the valve rod lower extreme, first dysmorphism groove with the second hole communicates with each other, the connecting block can remove between dysmorphism groove and first dysmorphism groove, the downthehole depression bar that has set through the screw thread of second, the depression bar can be screwed up or screw down through specialized tool, it has hexagon bolt to go up valve rod end threaded connection, hexagon bolt installs the back and presses on the hand wheel.

2. The gate valve of claim 1, wherein the gate valve has a hidden anti-theft function, and the hidden anti-theft function comprises: an inner square is arranged on the hand wheel, an outer square is arranged on the upper valve rod, and the hand wheel is sleeved on the upper valve rod through the inner square and the outer square.

3. The gate valve of claim 1, wherein the gate valve has a hidden anti-theft function, and the hidden anti-theft function comprises: and the upper end of the pressure lever is provided with a convex polygonal structure corresponding to the concave polygonal structure on the special tool.

4. The gate valve of claim 1, wherein the gate valve has a hidden anti-theft function, and the hidden anti-theft function comprises: the special-shaped groove and the first special-shaped groove are polygonal grooves, and the connecting block is matched with the polygonal grooves.

5. The gate valve of claim 1, wherein the gate valve has a hidden anti-theft function, and the hidden anti-theft function comprises: the valve body is characterized in that a sleeve is coaxially sleeved at the inlet of the left end of the valve body, the sleeve can move left and right after being sleeved at the inlet of the left end of the valve body, an O-shaped sealing ring is arranged between the valve body and the wall of the sleeve, and the sleeve and the valve body are limited through a limiting device.

6. The gate valve of claim 5, wherein the gate valve has a hidden anti-theft function, and the hidden anti-theft function comprises: the limiting device comprises a limiting screw and a nut, the limiting screw is a bolt, a limiting plate is arranged on the valve body, the nut is fixed on the sleeve, and the bolt can be screwed with the nut after penetrating through the limiting plate.

Images