Safety ball valve with emergency cut-off function

Abstract

The utility model relates to the technical field of ball valves, in particular to a safety ball valve with an emergency cut-off function, which comprises a valve casing, a valve rod is rotatably connected in the valve casing, one end of the valve rod is fixedly connected with a valve ball, the valve ball is slidably connected with the valve casing, and a cut-off structure is arranged on the inner wall of the valve casing and comprises a rotating ring. The rotating ring is rotatably connected with the valve shell, the inner arc face of the rotating ring is fixedly connected with a first hole plate, the inner wall of the valve shell is fixedly connected with a second hole plate, the first hole plate is slidably connected with the second hole plate, and a receding hole is formed in the surface of the valve shell. According to the ball valve with the cut-off structure, the cut-off structure is arranged, when the ball valve is in an emergency state, the second pore plate can be blocked by the first pore plate, and therefore the ball valve can be cut off conveniently, conveying of media is interrupted conveniently, the situation that the conveyed media overflow and waste of resources is avoided conveniently under the emergency conditions such as valve ball faults, and the safety and practicability of the ball valve are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a safety ball valve with an emergency shut-off function. Background Art

[0002] The ball valve is mainly composed of a valve body, a valve ball, a valve stem, etc. The valve ball is the key component of the ball valve. It is usually round and has a through hole on it. By rotating the valve stem, the valve ball is driven to rotate, thereby realizing the opening and closing of the valve. When the ball valve is in the open state, the through hole on the valve ball coincides with the axis of the pipeline, and the fluid can pass through the valve smoothly. When the ball valve is in the closed state, the valve ball rotates ninety degrees so that the through hole is perpendicular to the axis of the pipeline, thereby preventing the fluid from passing.

[0003] The above-mentioned and existing technologies have the following defects: when the valve ball of the ball valve fails during the process of conveying medium in the pipeline, it is difficult to quickly cut off the conveying channel, which easily causes the conveying medium to overflow, resulting in waste of resources and greatly reducing the safety and practicality of the ball valve.

[0004] Therefore, a safety ball valve with an emergency shut-off function is proposed. Utility Model Content

[0005] The utility model aims to solve the problem that when a ball of a ball valve fails, it is difficult to quickly cut off the conveying channel, which easily causes the conveying medium to overflow, and proposes a safety ball valve with an emergency cut-off function.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a safety ball valve with an emergency shut-off function, comprising a valve housing, a valve stem rotatably connected to the valve housing, one end of the valve stem fixedly connected to a valve ball, the valve ball and the valve housing being slidably connected, the inner wall of the valve housing being provided with a cut-off structure, the cut-off structure comprising a swivel, the swivel being rotatably connected to the valve housing, the inner arc surface of the swivel being fixedly connected to a first orifice plate, the inner wall of the valve housing being fixedly connected to a second orifice plate, the first orifice plate and the second orifice plate being slidably connected, a give-way hole being provided on the surface of the valve housing, a transmission ring being fixedly connected to the outer arc surface of the swivel, the transmission ring passing through the give-way hole, and the transmission ring being slidably connected to the valve housing.

[0007] The effect achieved by the above components is: by setting a cut-off structure, when in an emergency, the first orifice plate will block the second orifice plate, thereby facilitating the cutting off of the ball valve in emergency situations such as valve ball failure, interrupting the delivery of the medium, preventing the delivery medium from overflowing and causing waste of resources, and greatly improving the safety and practicality of the ball valve.

[0008] Preferably, a fixed block is fixedly connected to the surface of the valve housing, a clamping plate slides through the fixed block, the arc surface of the transmission ring is fixedly connected to the clamping block, and the size of the clamping plate matches the size of the clamping block.

[0009] The effect achieved by the above components is that the clamping plate reaches the position of the limiting clamping block, thereby limiting the position of the transmission ring.

[0010] Preferably, a leaf spring is fixedly connected to the surface of the fixing block, and one end of the leaf spring is fixedly connected to the clamping plate.

[0011] The effect achieved by the above components is that when the clamping block moves to a suitable position, the leaf spring contracts, and the clamping plate is inserted into the clamping block with the help of the elastic force of the leaf spring.

[0012] Preferably, a positioning plate is fixedly connected to the arc surface of the transmission ring, and the positioning plate is engaged with a clamping plate.

[0013] The effects achieved by the above components are: the clamping plate and the positioning plate can conveniently determine the positions of the first orifice plate and the second orifice plate.

[0014] Preferably, a limiting structure is provided on the surface of the valve housing, and the limiting structure includes a limiting ring, which is fixedly connected to the valve housing, and the arc surface of the valve stem is fixedly connected to a strip plate, and the surface of the strip plate is fixedly connected to a threaded rod, and the arc surface of the threaded rod is threadedly connected to a threaded pipe.

[0015] The effect achieved by the above components is: by setting a limiting structure, during the use of the ball valve, when the threaded tube rests on the surface of the limiting ring, the limiting ring reaches the position of the limiting threaded tube, thereby limiting the position of the valve stem, and then limiting the position of the valve ball. At this time, the conveying speed can be limited by means of the valve ball.

[0016] Preferably, a pick is fixedly connected to the arc surface of the threaded tube.

[0017] The effect achieved by the above components is: by rotating the paddle, the paddle facilitates the rotation of the threaded tube.

[0018] Preferably, a plurality of friction grooves are provided on the upper surface of the limiting ring.

[0019] The effect achieved by the above components is that the friction groove increases the friction force on the surface of the limit ring.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are:

[0021] 1. In the utility model, by setting a cut-off structure, when in an emergency, the first orifice plate will block the second orifice plate, so as to facilitate the cutting off of the ball valve in an emergency such as a valve ball failure, interrupting the delivery of the medium, preventing the delivery medium from overflowing and causing waste of resources, and greatly improving the safety and practicality of the ball valve.

[0022] 2. In the present invention, by setting a limiting structure, when the ball valve is used, when the threaded pipe contacts the surface of the limiting ring, the limiting ring reaches the position of the limiting threaded pipe, thereby limiting the position of the valve stem, and further limiting the position of the valve ball. At this time, the conveying speed can be limited by means of the valve ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve housing of the utility model;

[0025] Figure 3 This is a structural diagram of the first orifice plate of the utility model;

[0026] Figure 4 For this utility model Figure 1 Enlarged view of point A in the middle;

[0027] Figure 5 For this utility model Figure 2 Schematic diagram of the local structure.

[0028] Legend: 1. Valve housing; 2. Valve stem; 3. Valve ball; 4. Cut-off structure; 401. Swivel; 402. First orifice plate; 403. Clearance hole; 404. Transmission ring; 405. Second orifice plate; 406. Fixed block; 407. Clamping plate; 408. Clamping block; 409. Leaf spring; 410. Positioning plate; 5. Limiting structure; 51. Limiting ring; 52. Strip plate; 53. Threaded rod; 54. Threaded pipe; 55. Pick; 56. Friction groove. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0031] like Figure 1-Figure 5 As shown, the utility model provides a safety ball valve with an emergency shut-off function, including a valve housing 1, a valve stem 2 is rotatably connected to the valve housing 1, one end of the valve stem 2 is fixedly connected to a valve ball 3, the valve ball 3 is slidably connected to the valve housing 1, the inner wall of the valve housing 1 is provided with a shut-off structure 4, and the surface of the valve housing 1 is provided with a limiting structure 5.

[0032] The specific configuration and function of the cutting structure 4 and the limiting structure 5 will be described in detail below.

[0033] like Figure 1-Figure 4 As shown, the cutting structure 4 includes a swivel 401, which is rotatably connected to the valve housing 1, and the inner arc surface of the swivel 401 is fixedly connected to the first orifice plate 402, and the inner wall of the valve housing 1 is fixedly connected to the second orifice plate 405, and the first orifice plate 402 and the second orifice plate 405 are slidably connected. A clearance hole 403 is opened on the surface of the valve housing 1, and the outer arc surface of the swivel 401 is fixedly connected to the transmission ring 404, and the transmission ring 404 passes through the clearance hole 403, and the transmission ring 404 is slidably connected to the valve housing 1. The surface of the valve housing 1 is fixedly connected to a fixed block 406, and a clamping plate 407 is slidably penetrated in the fixed block 406. The arc surface of the transmission ring 404 is fixedly connected to a clamping block 408, and the clamping plate 408 is fixedly connected to the arc surface of the transmission ring 404. The size of plate 407 is matched with the size of block 408. Block 407 reaches the position of limiting block 408, thereby limiting the position of transmission ring 404. The surface of fixed block 406 is fixedly connected with leaf spring 409. One end of leaf spring 409 is fixedly connected with block 407. When block 408 moves to a suitable position, leaf spring 409 contracts. Block 407 will be inserted into block 408 with the help of the elastic force of leaf spring 409. The arc surface of transmission ring 404 is fixedly connected with positioning plate 410. Positioning plate 410 is engaged with positioning plate 407. Positioning plate 410 and positioning plate 410 can conveniently determine the position of first orifice plate 402 and second orifice plate 405.

[0034] like Figure 2 and Figure 5 As shown, the limiting structure 5 includes a limiting ring 51, which is fixedly connected to the valve housing 1, and the arc surface of the valve stem 2 is fixedly connected to a strip plate 52, and the surface of the strip plate 52 is fixedly connected to a threaded rod 53, and the arc surface of the threaded rod 53 is threadedly connected to a threaded tube 54, and the arc surface of the threaded tube 54 is fixedly connected to a paddle 55. When the paddle 55 is rotated, the paddle 55 facilitates the rotation of the threaded tube 54. A plurality of friction grooves 56 are provided on the upper surface of the limiting ring 51, and the friction grooves 56 increase the surface friction of the limiting ring 51.

[0035] Its overall working principle is that during the operation of the ball valve, when the clamping plate 407 is engaged with the positioning plate 410, the first orifice plate 402 will be aligned with the second orifice plate 405. At this time, the medium can flow through the valve housing 1 normally, thereby transporting the medium normally. The clamping plate 407 and the positioning plate 410 can easily determine the positions of the first orifice plate 402 and the second orifice plate 405. When the ball valve needs to be cut off in an emergency, the transmission ring 404 is rotated. The rotation of the transmission ring 404 will drive the rotating ring 401 to rotate, and the rotating ring 401 will drive the first orifice plate 402 to rotate. During this process, the first orifice plate 402 will gradually rotate the second orifice plate 405. Blocking, at the same time, the transmission ring 404 will drive the block 408 to move, and the block 408 will squeeze the card plate 407 after contacting the card plate 407. The card plate 407 slides along the fixed block 406 to stretch the leaf spring 409. When the block 408 moves to a suitable position, the leaf spring 409 contracts, and the card plate 407 is inserted into the block 408 with the help of the elastic force of the leaf spring 409. The card plate 407 reaches the position of limiting the block 408, thereby limiting the position of the transmission ring 404. At this time, the first orifice plate 402 will block the second orifice plate 405, so as to facilitate the cutting off of the ball valve in an emergency such as a failure of the valve ball 3, and interrupt the delivery of the medium.

[0036] During the use of the ball valve, the position of the valve ball 3 can be adjusted with the help of the valve stem 2, and the speed of the conveying medium can be adjusted by adjusting the rotation angle of the valve ball 3. When it is necessary to limit the position of the valve ball 3, the paddle 55 is rotated, and the paddle 55 facilitates the rotation of the threaded tube 54. The rotation of the threaded tube 54 will move downward along the arc surface of the threaded rod 53 with the help of the thread. When the threaded tube 54 rests on the surface of the limit ring 51, the limit ring 51 reaches the position of limiting the threaded tube 54, thereby limiting the position of the valve stem 2, and then limiting the position of the valve ball 3. At this time, the conveying speed can be limited with the help of the valve ball 3, and the friction groove 56 increases the surface friction of the limit ring 51.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A safety ball valve with an emergency shutoff function, comprising a valve housing (1), characterized in that: A valve stem (2) is rotatably connected to the valve housing (1), one end of the valve stem (2) is fixedly connected to a valve ball (3), the valve ball (3) is slidably connected to the valve housing (1), the inner wall of the valve housing (1) is provided with a cutting structure (4), the cutting structure (4) comprises a swivel (401), the swivel (401) is rotatably connected to the valve housing (1), the inner arc surface of the swivel (401) is fixedly connected to a first orifice plate (402), the inner wall of the valve housing (1) is fixedly connected to a second orifice plate (405), the first orifice plate (402) and the second orifice plate (405) are slidably connected, a clearance hole (403) is provided on the surface of the valve housing (1), the outer arc surface of the swivel (401) is fixedly connected to a transmission ring (404), the transmission ring (404) passes through the clearance hole (403), and the transmission ring (404) is slidably connected to the valve housing (1).

2. A safety ball valve with emergency shutoff function according to claim 1, characterized in that: A fixed block (406) is fixedly connected to the surface of the valve housing (1), a clamping plate (407) is slidably inserted into the fixed block (406), a clamping block (408) is fixedly connected to the arc surface of the transmission ring (404), and the size of the clamping plate (407) is adapted to the size of the clamping block (408).

3. A safety ball valve with emergency shutoff function according to claim 2, characterized in that: A leaf spring (409) is fixedly connected to the surface of the fixed block (406), and one end of the leaf spring (409) is fixedly connected to the clamping plate (407).

4. The safety ball valve with emergency shutoff function according to claim 2, characterized in that: The arc surface of the transmission ring (404) is fixedly connected with a positioning plate (410), and the positioning plate (410) is engaged with the clamping plate (407).

5. The safety ball valve with emergency shutoff function according to claim 1, characterized in that: The surface of the valve housing (1) is provided with a limiting structure (5), the limiting structure (5) comprises a limiting ring (51), the limiting ring (51) is fixedly connected to the valve housing (1), the arc surface of the valve stem (2) is fixedly connected to a strip plate (52), the surface of the strip plate (52) is fixedly connected to a threaded rod (53), and the arc surface of the threaded rod (53) is threadedly connected to a threaded pipe (54).

6. The safety ball valve with emergency shutoff function according to claim 5, characterized in that: A pick (55) is fixedly connected to the arc surface of the threaded tube (54).

7. The safety ball valve with emergency shutoff function according to claim 5, characterized in that: The upper surface of the limiting ring (51) is provided with a plurality of friction grooves (56).

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