Ferrule ball valve

Abstract

The utility model discloses a ferrule ball valve which comprises a valve body, a flow channel and a valve ball are arranged in the valve body, a valve rod used for controlling a valve element to rotate is arranged in the valve body, the valve rod is fixed to the valve body through a gland, a handle is arranged at the upper end of the valve rod, connecting parts are arranged at the two ends of the valve body, and the valve element is fixed to the valve body. The cutting sleeve nut is in threaded connection with the connecting part, an inner blade is arranged at the bottom end of a screw hole of the cutting sleeve nut, a plurality of clamping assemblies are arranged on the outer wall of the cutting sleeve nut in the circumferential direction, each clamping assembly comprises a fixing part and a connecting rod, the fixing part is provided with a sliding hole, the connecting rod is in axial sliding connection with the sliding hole, and the inner blade is arranged at the bottom end of the screw hole of the cutting sleeve nut. A strip-shaped clamping block is rotationally connected to the end, close to the valve body, of the connecting rod, a plurality of clamping parts are arranged on the side wall of the connecting part in the circumferential direction, each clamping part comprises a pair of abutting blocks arranged at intervals, and the distance between the abutting blocks is larger than the width of the clamping block but smaller than the length of the clamping block.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a ferrule ball valve. Background Art

[0002] The ferrule ball valve, also called ferrule type ball valve, double ferrule ball valve, single ferrule ball valve, ferrule reducing ball valve, snap ring ball valve, snap ring type ball valve, QG.Y1 ferrule ball valve, ferrule reducing diameter ball valve. The product is widely used in water treatment equipment, chemical equipment, petrochemical equipment, petroleum equipment, paper-making equipment, mining equipment, power equipment supporting, liquefied gas equipment, food equipment, pharmaceutical equipment, water supply and drainage equipment, mechanical equipment valves, electronic industry valves, urban construction valves, industrial pipeline valves, general parts, industrial equipment, fire protection and HVAC, filtration equipment, environmental protection equipment and other fields.

[0003] In the prior art, a ferrule is usually installed at the port of the ball valve. When the pipeline is inserted into the ferrule, the ferrule nut is tightened to abut against the ferrule, so that the inner edge of the ferrule is evenly in close contact with the outer wall of the pipeline to achieve sealing. The ferrule nut will rotate and loosen after long-term use, resulting in a decrease in sealing performance, and thus the medium in the pipeline may leak. Content of the Utility Model

[0004] The purpose of the utility model is to provide a ferrule ball valve to solve the problems raised in the above background art.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: a ferrule ball valve, including a valve body, a flow channel and a valve ball are arranged in the valve body, a valve rod for controlling the rotation of the valve core is arranged in the valve body, the valve rod is fixed to the valve body through a gland, a handle is arranged at the upper end of the valve rod, connection parts are arranged at both ends of the valve body, and further includes a ferrule nut threadedly connected to the connection part. An inner edge is arranged at the bottom end of the threaded hole of the ferrule nut. A plurality of clamping components are arranged along the circumferential direction on the outer wall of the ferrule nut. The clamping component includes a fixing part and a connecting rod. A sliding hole is arranged in the fixing part. The connecting rod is axially slidably connected to the sliding hole. A strip-shaped clamping block is rotatably connected to one end of the connecting rod close to the valve body. A plurality of clamping parts are arranged along the circumferential direction on the side wall of the connection part. The clamping part includes a pair of abutting blocks arranged at intervals. The distance between the pair of abutting blocks is greater than the width of the clamping block but less than the length of the clamping block.

[0006] With the above technical solution, after the ferrule nut is connected to the connecting part, the connecting rod is pushed to move towards the clamping part on the valve body. Since the clamping block is in a vertical state at this time, the connecting rod can pass through between a pair of abutting blocks corresponding to the clamping part. Then, the clamping block is rotated 90 degrees, and the clamping block is in a horizontal state. At this time, the clamping block cannot pass through between the pair of abutting blocks. At this time, the connecting rod circumferentially locks the connecting part and the ferrule nut, preventing relative rotation between the two, thereby reducing the situation of rotational loosening of the ferrule nut and maintaining good sealing performance.

[0007] As a further optimization of the present utility model, a convex block is provided on the side wall of the connecting rod, and a spring is sleeved on the connecting rod. The two ends of the spring are respectively connected to the convex block and the fixing part.

[0008] With the above technical solution, the spring is provided to connect the connecting rod and the fixing part. When the connecting rod slides towards the clamping part, the spring is stretched to generate potential energy. The spring contraction causes the connecting rod to be pulled in the direction away from the clamping part, so that the clamping block is in close contact with the abutting block. At the same time, the thread structure at the connection between the ferrule nut and the clamping part is subjected to a pre-tightening force in the axial direction, so that the ferrule nut and the clamping part are connected more tightly.

[0009] As a further optimization of the present utility model, a sealing ring is provided on the inner wall of the threaded hole of the ferrule nut. A plurality of protruding portions in the shape of teeth are provided on the surface of the sealing ring, and the protruding portions are arranged along the axial direction.

[0010] With the above technical solution, when the connecting pipe is inserted into the middle hole of the ferrule nut, the connecting pipe presses the surface of the sealing ring. After the protruding portions of the sealing ring are deformed, an elastic restoring force is generated, so as to firmly press the surface of the connecting pipe, thereby providing good sealing performance.

[0011] As a further optimization of the present utility model, a limiting block is provided at one end of the connecting rod away from the valve body, and the cross-sectional area of the limiting block is larger than the cross-sectional area of the sliding hole.

[0012] With the above technical solution, the limiting block is provided to prevent the connecting rod from falling off the sliding hole when sliding.

[0013] As a further optimization of the present utility model, a groove is provided at the center of the end face of the connecting rod, and a rotating shaft is provided at the center of the clamping block and is rotatably connected to the groove.

[0014] The beneficial effects of the present utility model are as follows: After the ferrule nut is connected to the connecting portion, the connecting rod is pushed to move towards the clamping portion on the valve body. Since the clamping block is in a vertical state at this time, the connecting rod can pass through between a pair of abutting blocks corresponding to the clamping portion. Then, the clamping block is rotated 90 degrees, and the clamping block is in a horizontal state. At this time, the clamping block cannot pass through between the pair of abutting blocks. At this time, the connecting rod circumferentially locks the connecting portion and the ferrule nut, avoiding relative rotation between the two, thereby reducing the situation of rotational loosening of the ferrule nut, and thus being able to maintain good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 an enlarged schematic diagram in

[0017] Figure 3 is a schematic structural diagram of the ferrule nut in the present utility model;

[0018] Figure 4 is a schematic structural diagram of the clamping assembly in the present utility model.

[0019] The meanings of the reference numerals in the figure: 1, valve body; 11, valve ball; 12, valve stem; 13, connecting portion; 14, gland; 15, handle; 16, ferrule nut; 2, fixing portion; 21, sliding hole; 3, connecting rod; 31, convex block; 32, limiting block; 33, groove; 4, spring; 5, clamping block; 51, rotating shaft; 6, abutting block; 7, sealing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] This specific embodiment is only an explanation of the present utility model, and it is not a limitation of the present utility model. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as they are within the scope of the claims of the present utility model, they are protected by the Patent Law.

[0021] See the attached Figures 1-4 , this embodiment disclosed by the present utility model is further provided with: A ferrule ball valve includes a valve body 1, a flow channel and a valve ball 11 are provided in the valve body 1, a valve stem 12 for controlling the rotation of the valve core is provided in the valve body 1, the valve stem 12 is fixed to the valve body 1 through a gland 14, a handle 15 is provided at the upper end of the valve stem 12, connecting portions 13 are provided at both ends of the valve body 1, and it further includes a ferrule nut 16 threadedly connected to the connecting portion 13, and an inner edge is provided at the bottom end of the screw hole of the ferrule nut 16;

[0022] The outer wall of the ferrule nut 16 is provided with a plurality of clamping components along the circumferential direction. The clamping components include a fixing part 2 and a connecting rod 3. The fixing part 2 is provided with a sliding hole 21. The connecting rod 3 is axially slidably connected to the sliding hole 21. One end of the connecting rod 3 close to the valve body 1 is rotatably connected with a strip-shaped clamping block 5. Specifically, a groove 33 is provided at the center of the end face of the connecting rod 3, and a rotating shaft 51 is provided at the center of the clamping block 5 and is rotatably connected with the groove 33;

[0023] A convex block 31 is provided on the side wall of the connecting rod 3. A spring 4 is sleeved on the connecting rod 3. The two ends of the spring 4 are respectively connected with the convex block 31 and the fixing part 2. Further, a limiting block 32 is provided at one end of the connecting rod 3 away from the valve body 1. The cross-sectional area of the limiting block 32 is larger than the cross-sectional area of the sliding hole 21. The limiting block 32 is provided to prevent the connecting rod 3 from falling off the sliding hole 21 when sliding;

[0024] A plurality of clamping parts are provided on the side wall of the connecting part 13 along the circumferential direction. The clamping parts include a pair of abutting blocks 6 arranged at intervals. The distance between the pair of abutting blocks 6 is larger than the width of the clamping block 5 but smaller than the length of the clamping block 5;

[0025] Further, a sealing ring 7 is provided on the inner wall of the threaded hole of the ferrule nut 16. A plurality of convex parts in the shape of teeth are provided on the surface of the sealing ring 7. The convex parts are arranged along the axial direction.

[0026] The principle of the present utility model is as follows: When the ferrule nut 16 is connected to the connecting part 13, the spring 4 is provided to connect the connecting rod 3 and the fixing part 2, and the connecting rod 3 is pushed to move towards the clamping part on the valve body 1. At the same time, the spring 4 is stretched to generate potential energy. Since the clamping block 5 is in a vertical state at this time, the connecting rod 3 can pass through between a pair of abutting blocks 6 corresponding to the clamping part. Then the clamping block 5 is rotated 90 degrees, and the clamping block 5 is in a horizontal state. At this time, the clamping block 5 cannot pass through between the pair of abutting blocks 6. After the connecting rod 3 is released, the spring 4 contracts, so that the connecting rod 3 is subjected to a pulling force away from the clamping part direction, so that the clamping block 5 is in close contact with the abutting block 6. At this time, the connecting rod 3 locks the circumferential direction of the connecting part 13 and the ferrule nut 16, avoiding relative rotation between the two. At the same time, the threaded structure at the connection between the ferrule nut 16 and the clamping part is subjected to a pre-tightening force in the axial direction, so that the ferrule nut 16 is connected to the clamping part more tightly, thus reducing the situation of rotational loosening of the ferrule nut 16, and thus being able to maintain good sealing performance;

[0027] When the connecting pipe is inserted into the middle hole of the ferrule nut 16, the connecting pipe presses the surface of the sealing ring 7. After the convex part of the sealing ring 7 is deformed, an elastic restoring force is generated, so as to firmly press the surface of the connecting pipe, thus providing good sealing performance.

[0028] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications under the above assumptions should also be regarded as the protection scope of the present utility model.

Claims

1. A ferrule ball valve, comprising a valve body (1), a flow passage and a valve ball (11) are provided in the valve body (1), a valve rod (12) for controlling the rotation of the valve core is provided in the valve body (1), the valve rod (12) is fixed to the valve body (1) through a gland (14), a handle (15) is provided at the upper end of the valve rod (12), connecting parts (13) are provided at both ends of the valve body (1), and further comprising a ferrule nut (16) threadedly connected to the connecting parts (13), an inner edge is provided at the bottom end of the screw hole of the ferrule nut (16), and it is characterized in that, The outer wall of the ferrule nut (16) is provided with a plurality of clamping components along the circumferential direction. The clamping components include a fixing part (2) and a connecting rod (3). The fixing part (2) is provided with a sliding hole (21). The connecting rod (3) is axially slidably connected to the sliding hole (21). One end of the connecting rod (3) close to the valve body (1) is rotatably connected with a strip-shaped clamping block (5). The side wall of the connecting part (13) is provided with a plurality of clamping parts along the circumferential direction. The clamping parts include a pair of abutting blocks (6) arranged at intervals. The distance between the pair of abutting blocks (6) is greater than the width of the clamping block (5) but less than the length of the clamping block (5).

2. The ferrule ball valve according to claim 1, characterized in that, A convex block (31) is provided on the side wall of the connecting rod (3). A spring (4) is sleeved on the connecting rod (3). The two ends of the spring (4) are respectively connected to the convex block (31) and the fixing part (2).

3. A ferrule ball valve according to claim 1 or 2, characterized in that, A sealing ring (7) is provided on the inner wall of the threaded hole of the ferrule nut (16). A plurality of convex parts in the shape of teeth are provided on the surface of the sealing ring (7). The convex parts are arranged along the axial direction.

4. A ferrule ball valve according to claim 1 or 2, characterized in that, A limiting block (32) is provided at one end of the connecting rod (3) away from the valve body (1). The cross-sectional area of the limiting block (32) is greater than the cross-sectional area of the sliding hole (21).

5. A ferrule ball valve according to claim 1 or 2, characterized in that, A groove (33) is provided at the center of the end face of the connecting rod (3). A rotating shaft (51) is provided at the center of the clamping block (5) and is rotatably connected to the groove (33).

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