Ball valve with high connection stability

Abstract

The utility model discloses a ball valve with high connection stability, which relates to the technical field of ball valves and comprises a ball valve body, a handle is sleeved on the outer wall of the ball valve body, a stainless steel sleeve is in threaded connection with the outer wall of the ball valve body, and an expansion sealing mechanism and an extrusion fixing mechanism are respectively embedded on the outer wall of the stainless steel sleeve. The expansion sealing mechanism is matched with the stainless steel sleeve, the joint between the ball valve body and the PEX pipeline can be sealed through expansion of the annular expansion air bag, the sealing effect is enhanced, meanwhile, buffering can be conducted under vibration of the pipeline, connection between the ball valve body and the PEX pipeline is not prone to loosening, the connection stability is improved, and the service life of the PEX pipeline is prolonged. And through the arranged extrusion fixing mechanism, a pair of arc-shaped clamping plates can be driven to conduct extrusion fixing, connection between the ball valve body and the PEX pipeline is reinforced, meanwhile, an elastic deformation separation net is matched, foreign matter entering and impact force can be reduced, and the connection stability of the ball valve body and the PEX pipeline is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, specifically a ball valve with high connection stability. Background Technology

[0002] A ball valve is a commonly used fluid control valve that controls the opening and closing of fluid flow by rotating a ball. It typically consists of a valve body, ball, seat, stem, and drive mechanism. Ball valves are widely used in domestic water supply and heating, industrial production, gas supply, and garden irrigation. In water supply, drainage, and heating systems, PEX pipes are often used to connect to both ends of the ball valve.

[0003] Currently, when connecting ball valves to PEX pipelines, heat fusion is usually used to attach the PEX pipeline to one end of the ball valve, and a ring-shaped anti-convex connection structure is used for connection and fixation. However, when the ball valve and PEX pipeline are used under working conditions such as water flow pressure or temperature changes or pipeline vibration for a long time, the ball valve and PEX pipeline are prone to loosening, affecting the connection stability. Therefore, this utility model proposes a ball valve with high connection stability. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a ball valve with high connection stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a ball valve with high connection stability, comprising a ball valve body, a handle sleeved on the outer wall of the ball valve body, a stainless steel sleeve threadedly connected to the outer wall of the ball valve body, an expansion sealing mechanism and a compression fixing mechanism respectively embedded in the outer wall of the stainless steel sleeve, and both the expansion sealing mechanism and the compression fixing mechanism being located on the outside of the ball valve body.

[0006] The aforementioned expansion sealing mechanism includes a pair of external frames. One end of each pair of external frames is fixedly connected to the outer wall of the stainless steel sleeve. Each pair of external frames has a compression screw on its opposite side, and each pair of external frames has a threaded hole at its opposite end. The adjacent ends of each pair of compression screws pass through the threaded holes and extend into the interior of the external frames. A piston plate is slidably connected to the inner wall of each pair of external frames, and one end of the piston plate is rotatably connected to one end of the compression screw. An annular expansion airbag is fitted onto the outer wall of the ball valve body, and the inner wall of the annular expansion airbag contacts the outer wall of the ball valve body. A pair of air guide tubes are fixedly connected to the outer wall of the annular expansion airbag. The end of the air guide tube away from the annular expansion airbag passes through the inner wall of the stainless steel sleeve and is fixedly connected to one end of the external frame.

[0007] The aforementioned compression fixing mechanism includes a pair of connecting plates. Each pair of connecting plates has a compression rod and a pair of round rods fixedly connected to its adjacent ends. The outer wall of the stainless steel sleeve has a pair of through holes. The end of the compression rod away from the connecting plate passes through the through holes and is fixedly connected to an arc-shaped clamping plate. An elastic deformation mesh is fixedly connected between the outer wall of the arc-shaped clamping plate and the inner wall of the stainless steel sleeve. Each pair of outer frames has a round hole at its opposite ends. The ends of the pair of round rods away from the connecting plates pass through the round holes and are fixedly connected to one end of the piston plate.

[0008] As described above, a sealing ring is fixedly connected to the inner wall of each pair of through holes, and the inner wall of the sealing ring is in close contact with the outer wall of the extrusion rod.

[0009] As described above, the outer wall of the ball valve body is fixedly connected with multiple annular protrusions, and the outer wall of the ball valve body is chiseled with multiple annular grooves.

[0010] As mentioned above, the outer wall of the handle is fitted with a rubber sleeve, and the surface of the rubber sleeve is provided with anti-slip texture.

[0011] As mentioned above, the outer wall of the ball valve body is provided with external threads, the inner wall of the stainless steel sleeve is provided with internal threads, and the external threads and internal threads are threadedly connected.

[0012] Compared with existing technologies, this ball valve with high connection stability has the following advantages:

[0013] I. This utility model, through the combination of an expansion sealing mechanism and a stainless steel sleeve, can use the expansion of the annular expansion bladder to seal the connection between the ball valve body and the PEX pipeline, thereby enhancing the sealing effect. At the same time, it can buffer the vibration of the pipeline, making the connection between the ball valve body and the PEX pipeline less prone to loosening and improving the connection stability.

[0014] Second, this utility model, through the set compression and fixing mechanism, can drive a pair of arc-shaped clamps to compress and fix, strengthen the connection between the ball valve body and the PEX pipeline, and at the same time, with the help of the elastic deformation mesh, can reduce the entry of foreign objects and reduce the impact force, ensuring the stability of the connection between the ball valve body and the PEX pipeline.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2This is a schematic diagram showing the disassembled structure of the ball valve body and the stainless steel sleeve in this utility model;

[0018] Figure 3 This is a partially disassembled structural diagram of the expansion sealing mechanism and the compression fixing mechanism in this utility model;

[0019] Figure 4 This utility model Figure 3 A magnified structural diagram of point A in the middle.

[0020] In the diagram: 1. Ball valve body; 2. Handle; 3. Stainless steel sleeve; 4. Expansion sealing mechanism; 401. External frame; 402. Extrusion screw; 403. Piston plate; 404. Air guide pipe; 405. Annular expansion air bladder; 5. Extrusion fixing mechanism; 501. Connecting plate; 502. Extrusion rod; 503. Arc-shaped clamp; 504. Elastic deformation mesh; 505. Round rod; 6. Sealing ring; 7. Annular protrusion; 8. Annular groove; 9. Rubber sleeve; 10. External thread; 11. Internal thread. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a technical solution: a ball valve with high connection stability, including a ball valve body 1, a handle 2 sleeved on the outer wall of the ball valve body 1, a stainless steel sleeve 3 threadedly connected to the outer wall of the ball valve body 1, an expansion sealing mechanism 4 and a compression fixing mechanism 5 respectively embedded in the outer wall of the stainless steel sleeve 3, and the expansion sealing mechanism 4 and the compression fixing mechanism 5 are both located on the outside of the ball valve body 1, the outer wall of the ball valve body 1 is provided with an external thread 10, the inner wall of the stainless steel sleeve 3 is provided with an internal thread 11, and the external thread 10 and the internal thread 11 are threadedly connected.

[0023] According to the overall structure of the device, after the ball valve body 1 is connected to the PEX pipeline, the stainless steel sleeve 3 is screwed to connect and fix it, and is placed on the outside of the ball valve body 1 and the PEX pipeline. Then, the annular expansion air bag 405 is expanded by the expansion sealing mechanism 4 to squeeze and seal the connection between the ball valve body 1 and the PEX pipeline, reducing the risk of leakage. At the same time, the pair of arc-shaped clamps 503 are squeezed and fixed by the compression fixing mechanism 5 to strengthen the connection between the ball valve body 1 and the PEX pipeline, so that the ball valve body 1 and the PEX pipeline are stably connected together. Then, the ball valve body 1 is opened and closed by manually rotating the handle 2.

[0024] like Figure 1 , Figure 3 and Figure 4 As shown, the expansion sealing mechanism 4 includes a pair of external frames 401. One end of each pair of external frames 401 is fixedly connected to the outer wall of the stainless steel sleeve 3. A pressing screw 402 is provided on the side of each pair of external frames 401 that is far away from each other, and a threaded hole is drilled on the side of each pair of external frames 401 that is far away from each other. The ends of the pair of pressing screws 402 that are close to each other pass through the threaded hole and extend into the interior of the external frame 401. A piston plate 403 is slidably connected to the inner wall of each pair of external frames 401, and one end of the piston plate 403 is rotatably connected to one end of the pressing screw 402. An annular expansion airbag 405 is sleeved on the outer wall of the ball valve body 1, and the inner wall of the annular expansion airbag 405 is in contact with the outer wall of the ball valve body 1. A pair of air guide pipes 404 are fixedly connected to the outer wall of the annular expansion airbag 405. The end of the air guide pipe 404 that is far away from the annular expansion airbag 405 passes through the inner wall of the stainless steel sleeve 3 and is fixedly connected to one end of the external frame 401.

[0025] With the expansion sealing mechanism 4 in place, the rotating extrusion screw 402 drives the piston plate 403 to extrude the air inside the outer frame 401 into the annular expansion airbag 405, causing it to expand and compress and seal the connection between the ball valve body 1 and the PEX pipeline, thereby enhancing the sealing effect. In addition, the expanded annular expansion airbag 405 can provide corresponding buffering when the pipeline vibrates, reducing the impact of pipeline vibration and making the connection between the ball valve body 1 and the PEX pipeline less prone to loosening, thus improving the connection stability.

[0026] like Figure 1 , Figure 3 and Figure 4As shown, the extrusion fixing mechanism 5 includes a pair of connecting plates 501. An extrusion rod 502 and a pair of round rods 505 are fixedly connected to the ends of the pair of connecting plates 501 that are close to each other. A pair of through holes are drilled on the outer wall of the stainless steel sleeve 3. The end of the extrusion rod 502 away from the connecting plate 501 passes through the through hole and is fixedly connected to an arc-shaped clamping plate 503. An elastic deformation partition 504 is fixedly connected between the outer wall of the arc-shaped clamping plate 503 and the inner wall of the stainless steel sleeve 3. A pair of round holes are drilled on the ends of the pair of external frames 401 that are far from each other. The ends of the pair of round rods 505 away from the connecting plate 501 pass through the round holes and are fixedly connected to one end of the piston plate 403.

[0027] By setting up the compression fixing mechanism 5, the piston plate 403 drives the connecting plate 501 to move through a pair of round rods 505, which in turn drives the arc-shaped clamping plate 503 to move through the compression rod 502. This compresses the inner wall of the PEX pipe to fit tightly against the outer wall of the ball valve body 1, making it less prone to loosening. Furthermore, the elastic deformation mesh 504 extends out with the movement of the arc-shaped clamping plate 503 and is located at the opening of the stainless steel sleeve 3, blocking foreign objects and reducing their impact force to avoid affecting the ball valve body 1 and the PEX pipe, thus ensuring the connection stability between the ball valve body 1 and the PEX pipe.

[0028] like Figure 1 and Figure 3 As shown, a sealing ring 6 is fixedly connected to the inner wall of each pair of through holes, and the inner wall of the sealing ring 6 is in close contact with the outer wall of the extrusion rod 502.

[0029] By setting the sealing ring 6, the gap between the through hole and the extrusion rod 502 can be sealed, making it difficult for small foreign objects to enter and enhancing the sealing effect.

[0030] like Figure 1 and Figure 2 As shown, multiple annular protrusions 7 are fixedly connected to the outer wall of the ball valve body 1, and multiple annular grooves 8 are chiseled into the outer wall of the ball valve body 1.

[0031] By using heat fusion, the connection end of the PEX pipe is deformed by high temperature, and then the PEX pipe is squeezed to connect with the ball valve body 1. The inner wall of the connection end of the PEX pipe is deformed and fits into multiple annular protrusions 7 and annular grooves 8, thus achieving a rapid sealing connection between the two.

[0032] like Figure 1 and Figure 2 As shown, a rubber sleeve 9 is fitted onto the outer wall of the handle 2, and the surface of the rubber sleeve 9 is provided with anti-slip texture.

[0033] The rubber sleeve 9, with its anti-slip texture, allows operators to easily and stably rotate the handle 2.

[0034] Working principle: First, the PEX pipe is heat-fused to deform its connection end, thus connecting the PEX pipe to the ball valve body 1. This deformation causes the inner wall of the PEX pipe connection end to conform to multiple annular protrusions 7 and annular grooves 8. Next, the stainless steel sleeve 3 is rotated and connected to the ball valve body 1, fitting over the outer side of the ball valve body 1 and the PEX pipe. Then, the synchronously rotating extrusion screw 402 drives a pair of piston plates 403 to move in opposite directions, compressing the air inside the outer frame 401 and inflating it into the annular expansion bladder through the air guide pipe 404. Inside 405, it expands, compressing and sealing the connection between the ball valve body 1 and the PEX pipe. At the same time, a pair of connecting plates 501 move towards each other via a pair of round rods 505 along with a pair of piston plates 403, causing a pair of extrusion rods 502 to move towards each other, causing a pair of arc-shaped clamping plates 503 to move towards each other, compressing the inner wall of the PEX pipe and the outer wall of the ball valve body 1 to fit tightly together. The elastic deformation mesh 504 extends with the movement of the arc-shaped clamping plates 503. Then, the ball valve body 1 is opened and closed by manually rotating the handle 2.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ball valve with high connection stability, comprising a ball valve body (1), characterized in that: The ball valve body (1) is fitted with a handle (2) on its outer wall. The ball valve body (1) is threaded with a stainless steel sleeve (3). The outer wall of the stainless steel sleeve (3) is respectively fitted with an expansion sealing mechanism (4) and a compression fixing mechanism (5), and the expansion sealing mechanism (4) and the compression fixing mechanism (5) are both located on the outside of the ball valve body (1).

2. The ball valve with high connection stability according to claim 1, characterized in that: The expansion sealing mechanism (4) includes a pair of outer frames (401). One end of each pair of outer frames (401) is fixedly connected to the outer wall of the stainless steel sleeve (3). Each pair of outer frames (401) has a pressing screw (402) on the side away from each other. Each pair of outer frames (401) has a threaded hole drilled at the side away from each other. The ends of the pair of pressing screws (402) that are close to each other pass through the threaded hole and extend into the interior of the outer frame (401). A piston plate (4) is slidably connected to the inner wall of each pair of outer frames (401). 03), and one end of the piston plate (403) is rotatably connected to one end of the extrusion screw (402). The outer wall of the ball valve body (1) is fitted with an annular expansion air bladder (405), and the inner wall of the annular expansion air bladder (405) is in contact with the outer wall of the ball valve body (1). A pair of air guide pipes (404) are fixedly connected to the outer wall of the annular expansion air bladder (405). The end of the air guide pipe (404) away from the annular expansion air bladder (405) passes through the inner wall of the stainless steel sleeve (3) and is fixedly connected to one end of the outer frame (401).

3. The ball valve with high connection stability according to claim 2, characterized in that: The extrusion fixing mechanism (5) includes a pair of connecting plates (501). An extrusion rod (502) and a pair of round rods (505) are fixedly connected to the ends of the pair of connecting plates (501) that are close to each other. A pair of through holes are drilled on the outer wall of the stainless steel sleeve (3). The end of the extrusion rod (502) away from the connecting plate (501) passes through the through hole and is fixedly connected to an arc-shaped clamping plate (503). An elastic deformation mesh (504) is fixedly connected between the outer wall of the arc-shaped clamping plate (503) and the inner wall of the stainless steel sleeve (3). A round hole is drilled on the ends of the pair of outer frames (401) that are far from each other. The ends of the pair of round rods (505) away from the connecting plate (501) pass through the round hole and are fixedly connected to one end of the piston plate (403).

4. A ball valve with high connection stability according to claim 3, characterized in that: A sealing ring (6) is fixedly connected to the inner wall of each pair of through holes, and the inner wall of the sealing ring (6) is in close contact with the outer wall of the extrusion rod (502).

5. A ball valve with high connection stability according to claim 1, characterized in that: The outer wall of the ball valve body (1) is fixedly connected with a plurality of annular protrusions (7), and the outer wall of the ball valve body (1) is chiseled with a plurality of annular grooves (8).

6. A ball valve with high connection stability according to claim 1, characterized in that: The outer wall of the handle (2) is fitted with a rubber sleeve (9), and the surface of the rubber sleeve (9) is provided with anti-slip texture.

7. A ball valve with high connection stability according to claim 1, characterized in that: The outer wall of the ball valve body (1) is provided with an external thread (10), and the inner wall of the stainless steel sleeve (3) is provided with an internal thread (11), and the external thread (10) and the internal thread (11) are threadedly connected.

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