Ultra-thin ball valve

Abstract

The utility model discloses an ultra-thin ball valve which comprises a valve body, a valve cover arranged on the valve body, a ball body installed in the valve body, a valve rod connected with the ball body, a handle connected with the valve rod, sealing packing arranged between the valve body and the valve rod, a packing gland located above the sealing packing and a pressing assembly. The pressing assembly is matched with the handle to apply pressure towards the sealing filler to the filler gland, the pressing assembly has a normal pressing state and a pressurized pressing state, and when the valve is in a closed state, the pressing assembly is in the pressurized pressing state; the handle controls the pressing assembly to be switched between the normal pressing state and the pressurization pressing state. The utility model has the following advantages and effects: the service life of the sealing filler can be prolonged, so that the leakage of the valve is avoided, and the good sealing performance of the valve is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, in particular to a super thin ball valve. BACKGROUND

[0002] The opening and closing part of the ball valve is driven by the valve rod and rotates around the axis of the ball valve. It can also be used for fluid regulation and control. The multi-way ball valve can not only flexibly control the flow, distribution and flow direction switching of the medium on the pipeline, but also can close any channel to connect the other two channels. Ball valves are divided into pneumatic ball valves, electric ball valves and manual ball valves according to the driving mode.

[0003] The ball valve includes a valve body, a valve rod installed on the valve body, a sealing packing arranged between the valve rod and the valve body, and a packing gland for pressing the sealing packing. The existing packing gland applies constant pressing force to the sealing packing, but the pressure received by the valve is different when it is in the open and closed states. In order to ensure the sealing performance of the ball valve, the maximum pressure is used as the standard, and the sealing packing needs to be pressed by the packing gland to apply enough pressure to the sealing packing to withstand the maximum pressure. However, the sealing packing is in a state of being subjected to a large pressure for a long time, which easily causes fatigue of the sealing packing, thereby reducing the service life of the sealing packing, and ultimately leading to leakage of the valve. SUMMARY

[0004] The utility model aims at providing a super thin ball valve which can prolong the service life of the sealing packing to avoid leakage of the valve and ensure good sealing performance of the valve.

[0005] The above technical purpose of the utility model is achieved by the following technical scheme: a super thin ball valve includes a valve body, a valve cover arranged on the valve body, a ball installed in the valve body, a valve rod connected to the ball, a handle connected to the valve rod, a sealing packing arranged between the valve body and the valve rod, and a packing gland located above the sealing packing. The utility model also includes a pressing assembly which cooperates with the handle to apply pressure to the packing gland towards the sealing packing. The pressing assembly has a normal pressing state and a pressurized pressing state. When the valve is in the closed state, the pressing assembly is in the pressurized pressing state. The handle controls the pressing assembly to switch between the normal pressing state and the pressurized pressing state.

[0006] By adopting the technical scheme, the handle is rotated to control the switching of the compression assembly between the normal compression state and the pressurized compression state, when the valve is in the starting state, the compression assembly is in the normal compression state, thereby reducing the excessive pressure applied to the sealing packing and prolonging the service life of the sealing packing; when the valve is in the closed state, the compression assembly is in the pressurized compression state, thereby increasing the pressure applied to the sealing packing to improve the sealing performance of the sealing packing, so as to adapt to the large pressure in the inner cavity of the valve body in the closed state and ensure the good sealing performance of the valve.

[0007] Further, the compression assembly comprises a compression ring sleeved on the valve rod and located above the packing gland, and a reversing structure arranged between the compression ring and the handle, and the compression ring is connected with a limiting structure for limiting the circumferential rotation of the compression ring.

[0008] By adopting the technical scheme, the reversing structure is arranged to change the force direction of the handle, so that the force can be applied to the side of the packing gland, and the limiting structure is arranged to ensure the implementability of the scheme.

[0009] Further, the reversing structure comprises a reversing protrusion arranged on the end surface of the compression ring facing the handle and a reversing path arranged on the surface of the handle facing the compression ring and corresponding to the reversing protrusion, one end of the reversing path along the rotation direction of the handle is in excess connection with the handle, and the other end gradually protrudes towards the side of the reversing protrusion, and the reversing protrusion and the reversing path are arranged in multiple groups around the valve rod.

[0010] By adopting the technical scheme, the reversing path rotates with the handle to drive the compression ring to gradually move towards the packing gland and compress the packing gland in cooperation with the reversing protrusion, so as to realize the switching of the compression assembly between the two states.

[0011] Further, the limiting structure comprises a plurality of limiting blocks fixedly arranged on the outer circle of the compression ring and a limiting groove arranged on the wall of the valve body and corresponding to each limiting block and embedded therein, the limiting groove extends along the axis of the valve rod, and the limiting block and the limiting groove are in sliding cooperation.

[0012] By adopting the technical scheme, the cooperation of the limiting groove and the limiting block not only meets the movement of the compression ring along the axis of the valve rod, but also limits the circumferential rotation of the compression ring, so as to ensure that the compression ring can apply stable compression force to the packing gland.

[0013] Further, a compression spring sleeved on the valve rod is arranged between the compression ring and the packing gland.

[0014] By adopting the technical scheme, the compression spring is arranged to realize elastic sealing of the sealing packing, so that the sealing effect is ensured, excessive compression fatigue of the sealing packing is avoided, the redundant difference between assembly is more convenient to control, the resistance of the valve in the rotating process is reduced, and the smoothness of the rotation is improved.

[0015] Further arrangement is that the handle is provided with a locking column which rotates with the handle and moves in the vertical direction, the valve body is provided with a locking groove for the locking column to insert corresponding to the action path of the locking column, and the locking column is synchronously located in the locking groove and the handle when the locking column inserts the locking groove.

[0016] By adopting the technical scheme, the locking column cooperates with the locking groove to avoid misoperation of the valve opening and closing, and to avoid safety hazards.

[0017] Further arrangement is that the locking column is made of iron and is slidably arranged above the handle and provided with a magnet, and the locking column is separated from the locking groove when the magnet adsorbs the locking column.

[0018] By adopting the technical scheme, the locking column is switched between the locking state and the unlocking state through the magnet adsorption, so that the control operation is more convenient.

[0019] In summary, the utility model has the following beneficial effects: the utility model can prolong the service life of the sealing packing, thereby avoiding leakage of the valve and ensuring good sealing performance of the valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of an embodiment;

[0021] Figure 2 It is Figure 1 It is an enlarged view of A part in the middle;

[0022] Figure 3 It is a partial structure schematic view of an embodiment.

[0023] In the figure: 1, valve body; 2, valve cover; 3, ball; 4, valve rod; 5, handle; 6, sealing packing; 7, packing gland; 8, compression assembly; 81, compression ring; 82, reversing protrusion; 83, reversing path; 91, limiting block; 92, limiting groove; 10, compression spring; 11, locking column; 12, locking groove; 13, magnet. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in combination with the drawings.

[0025] Reference Figures 1 to 3The utility model provides an ultra -thin ball valve, including valve body 1, fixedly arranged in valve body 1's valve cover 2, install in the ball 3 of valve body 1, connect the valve stem 4 of ball 3, fixedly connect the handle 5 of valve stem 4, set up between the sealing packing 6 of valve body 1 and valve stem 4 and the packing gland 7 of packing of sleeveing in valve stem 4 and located sealing packing 6 above, still include compression assembly 8, and compression assembly 8 cooperates handle 5 to apply the pressure of filling towards sealing packing 6 to packing gland 7, and compression assembly 8 has normal compression state and pressurized compression state, when valve is in closed state, compression assembly 8 is in pressurized compression state, and handle 5 controls compression assembly 8 to switch between normal compression state and pressurized compression state, and sealing packing 6 is rubber material.

[0026] Compression assembly 8 includes the compression ring 81 of sleeveing in valve stem 4 and located packing gland 7 above and the reversing structure of setting between compression ring 81 and handle 5, and the limiting structure of connecting on compression ring 81 limits the rotation of compression ring 81 periphery, and reversing structure includes the reversing protrusion 82 of integrally setting in the one end surface of compression ring 81 facing handle 5 and the reversing path 83 of integrally setting in the one side of handle 5 facing compression ring 81 and corresponding reversing protrusion 82, and reversing path 83 one end along the direction of rotation of handle 5 with handle 5 overlinking, and the other end gradually protrudes setting towards the side of reversing protrusion 82, and reversing protrusion 82 and reversing path 83 are around valve stem 4 and are provided with multiple groups and preferably two groups.

[0027] Limiting structure includes the multiple limiting blocks 91 of fixedly setting in the outer ring of compression ring 81 and the limiting slot 92 of setting in the wall of valve body 1 and one to one corresponding each limiting block 91 and being inserted by it, and limiting slot 92 extends along the axis of valve stem 4 and is provided with a long strip shape and limiting block 91 and limiting slot 92 sliding fit, and compression ring 81 and packing gland 7 are equipped with compression spring 10 of sleeveing in valve stem 4 between them.

[0028] Handle 5 is equipped with the locking column 11 of moving along the vertical direction with the rotation of handle 5, and locking column 11 is slidingly arranged in handle 5, and valve body 1 is equipped with the locking slot 12 of inserting locking column 11 corresponding to the action path of locking column 11, when locking column 11 inserts locking slot 12, locking column 11 is located in locking slot 12 and handle 5 simultaneously, and locking column 11 is iron material, specifically, the stainless steel iron that can be attracted by magnet, and the magnet 13 of slidingly setting above handle 5 is arranged, when magnet 13 attracts locking column 11, locking column 11 and locking slot 12 are separated, and locking slot 12 is arranged as two and corresponds the opening position and the closed position of valve respectively.

[0029] The embodiment is only the explanation of the utility model, and it is not the limitation of the utility model, and the person skilled in the art can make the modification of no creative contribution according to the need after reading the present specification, but as long as in the right claim range of the utility model, it is protected by the patent law.

Claims

1. An ultra-thin ball valve, comprising a valve body (1), a bonnet (2) arranged on the valve body (1), a ball (3) installed in the valve body (1), a valve stem (4) connected to the ball (3), a handle (5) connected to the valve stem (4), a sealing packing (6) arranged between the valve body (1) and the valve stem (4), and a packing gland (7) located above the sealing packing (6), characterized in that: Also include a compression assembly (8) matched with the handle (5) to apply pressure to the packing gland (7) towards the sealing packing (6), the compression assembly (8) has a normal compression state and a pressurized compression state, the compression assembly (8) is in the pressurized compression state when the valve is in the closed state, the handle (5) controls the switching of the compression assembly (8) between the normal compression state and the pressurized compression state.

2. The ultra-thin ball valve according to claim 1, characterized in that: The compression assembly (8) includes a compression ring (81) sleeved on the valve stem (4) and located above the packing gland (7), and a reversing structure arranged between the compression ring (81) and the handle (5), the compression ring (81) is connected with a limiting structure limiting the circumferential rotation of the compression ring (81).

3. The ultra-thin ball valve according to claim 2, characterized in that: The reversing structure includes a reversing protrusion (82) arranged on the end face of the compression ring (81) facing the handle (5), and a reversing path (83) arranged on the side of the handle (5) facing the compression ring (81) and corresponding to the reversing protrusion (82), one end of the reversing path (83) is in excess of the handle (5) and the other end is gradually protruding towards the side of the reversing protrusion (82), the reversing protrusion (82) and the reversing path (83) are arranged around the valve stem (4) in multiple groups.

4. The ultra-thin ball valve according to claim 2, characterized in that: The limiting structure includes a plurality of limiting blocks (91) fixedly arranged on the outer circle of the compression ring (81), and a limiting groove (92) arranged on the wall of the valve body (1) and corresponding to each limiting block (91) for embedding, the limiting groove (92) is arranged along the axis of the valve stem (4) and the limiting block (91) and the limiting groove (92) are in sliding fit.

5. The ultra-thin ball valve according to claim 2, characterized in that: The compression spring (10) sleeved on the valve stem (4) is arranged between the compression ring (81) and the packing gland (7).

6. The ultra-thin ball valve according to claim 1, characterized in that: The handle (5) is provided with a locking column (11) rotating with the handle (5) and movable in the vertical direction, the valve body (1) is provided with a locking groove (12) for inserting the locking column (11) corresponding to the action path of the locking column (11), when the locking column (11) is inserted into the locking groove (12), the locking column (11) is located in the locking groove (12) and the handle (5) at the same time.

7. The ultra-thin ball valve according to claim 6, characterized in that: The locking column (11) is made of iron material, a magnet (13) is slidingly arranged above the handle (5), when the magnet (13) adsorbs the locking column (11), the locking column (11) is separated from the locking groove (12).

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