A soft sealing ball valve easy to disassemble

Abstract

The utility model discloses a soft sealing ball valve of convenient dismounting, including valve body, valve rod and globosity, valve body includes main valve part and vice valve part, still be equipped with sealing seat on main valve part and vice valve part, and two constitute the valve cavity for accommodating globosity, globosity is arranged between two sealing seats and is in abutment, and the medium flow channel of being provided on the valve body is communicated with the flow hole on the globosity and is switched through the rotation of globosity driven by valve rod, the ball valve of the utility model through setting double -sided valve body structure and three -segment type convenient dismounting valve rod, when using, through the soft sealing element on the sealing seat promotion and the sealing effect of globosity, through the top spring spare promotion sealing sustained capacity, when disassembling, based on double -sided valve body structure and three -segment type convenient dismounting valve rod, can avoid the pipeline flange of more bolt spare of disassembly and the sealing packing box and executing mechanism of easy damage when disassembling, directly decomposes the valve body, takes out the globosity and sealing seat of inside main need cleaning, improves the maintenance efficiency of staff.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a soft-seal ball valve that is easy to disassemble and assemble. Background Technology

[0002] Ball valves and gate valves belong to the same type of valve, the difference being that the ball valve's closing element is a ball, which rotates around the valve body's centerline to open and close. Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of media. A ball valve is a valve in which the opening and closing element (the ball) is driven by the valve stem and rotates around the stem's axis.

[0003] During use, ball valves are used in different environments and control different water bodies. In water bodies containing a lot of silt, the internal parts of the ball valve are prone to wear after long-term use. Therefore, ball valves need to be disassembled and maintained regularly. Generally, maintenance of the ball and valve body requires the complete disassembly of the actuator, valve stem, and valve seat. The disassembly of the ball valve seat usually needs to be done from the pipeline connection side. However, ball valves often use flanged pipe connections, which makes the pipeline disassembly process cumbersome. This makes the disassembly and maintenance of ball valves quite troublesome. Therefore, there is a need for a ball valve that is easy to disassemble and assemble. Utility Model Content

[0004] In view of the existing technology, the purpose of this utility model is to provide a soft-seal ball valve that can be easily disassembled and assembled, so that workers can quickly separate the valve body and maintain and clean the inner valve cavity.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a soft-seal ball valve that is easy to disassemble and assemble, comprising a valve body, a valve stem, and a ball. The valve body includes a main valve section and a secondary valve section. The main valve section and the secondary valve section are also provided with sealing seats, and the two together form a valve cavity for accommodating the ball. The ball is abutted between the two sealing seats. The valve stem drives the ball to rotate, so that the medium flow channel provided on the valve body and the flow hole on the ball can be connected and switched.

[0006] As a further provision of the above scheme, the valve stem includes a lower valve shaft, a middle valve shaft, and an upper valve shaft. The middle valve shaft extends out of the valve body and is equipped with a coupling to circumferentially link with the upper valve shaft. The upper valve shaft is also connected to the main shaft of the valve's actuator.

[0007] As a further provision of the above scheme, the coupling includes two housings forming an annular shape with square inner grooves, and the middle valve shaft and the upper valve shaft are also provided with square portions that match the square inner grooves.

[0008] As a further feature of the above scheme, the main valve section and the auxiliary valve section are respectively provided with valve seat grooves for mounting the sealing seat.

[0009] As a further feature of the above solution, the secondary valve is fixedly connected to the main valve by bolts.

[0010] As a further provision of the above scheme, the valve body is also provided with a bottom cover, the bottom cover is directly opposite the lower end of the valve stem, and the lower end of the valve stem abuts against the bottom cover.

[0011] As a further provision of the above solution, the sealing seat includes a valve seat body, a soft sealing element, and a top spring element. The top spring element is disposed between the valve seat body and the main valve part and the auxiliary valve part, and the top spring element is disposed in abutment between the valve seat body and the ball.

[0012] Beneficial effects: The ball valve of this utility model, through the setting of a double-piece valve body structure and a three-section easy-to-disassemble valve stem, improves the sealing effect between the ball and the sealing seat through the soft sealing element on the sealing seat during use, and enhances the sealing continuity through the top spring element. During disassembly, based on the double-piece valve body structure and the three-section easy-to-disassemble valve stem, it is possible to avoid the pipe flange with many disassembly bolts and the sealing packing gland and actuator that are easily damaged during disassembly, and directly disassemble the valve body to remove the ball and sealing seat that mainly need to be cleaned, thereby improving the maintenance efficiency of the staff. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the ball valve of this utility model.

[0014] Figure 2 This is a schematic diagram of the internal cross-section of the ball valve in this embodiment.

[0015] Figure 3 This is a schematic diagram of the middle valve shaft and upper valve shaft in this embodiment.

[0016] Figure 4 This is a schematic diagram of the coupling structure in this embodiment.

[0017] Reference numerals: 1. Valve body; 11. Main valve section; 12. Secondary valve section; 13. Bolt; 14. Valve seat groove; 18. Bottom cover; 2. Valve stem; 21. Lower valve shaft; 22. Middle valve shaft; 23. Upper valve shaft; 24. Coupling; 241. Square inner groove; 242. Housing; 243. Square part; 3. Ball; 4. Sealing seat; 41. Valve seat body; 42. Soft seal; 43. Top spring; 5. Valve cavity; 6. Medium flow channel; 7. Flow hole; 8. Actuator. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0019] like Figure 1-4 The present invention discloses a soft-seal ball valve that is easy to disassemble and assemble, comprising a valve body 1, a valve stem 2, and a ball 3. The valve body 1 includes a main valve section 11 and a secondary valve section 12. The main valve section 11 and the secondary valve section 12 are also provided with sealing seats 4, and the two together form a valve cavity 5 for accommodating the ball 3. The ball 3 is abutted between the two sealing seats 4. The valve stem 2 drives the ball 3 to rotate, so that the medium flow channel 6 provided on the valve body 1 and the flow hole 7 on the ball 3 are connected and switched.

[0020] As a further configuration of the above scheme, the valve stem 2 includes a lower valve shaft 21, a middle valve shaft 22, and an upper valve shaft 23. The middle valve shaft 22 extends out of the valve body 1 and is provided with a coupling 24 to circumferentially link the upper valve shaft 23. The upper valve shaft 23 is also connected to the main shaft of the valve's actuator 8. The coupling 24 includes two ring-shaped housings 242 with square inner grooves 241. The middle valve shaft 22 and the upper valve shaft 23 are also provided with square portions 243 that match the square inner grooves 241. With the above structural configuration, the upper valve shaft 23 and the middle valve shaft 22 in this embodiment are provided with square portions 243 at their opposite ends, and the two are spaced apart. The distance between them is greater than the length of the ball 3 inserted at the lower end of the middle valve shaft 22. When disassembling, the middle valve shaft 22 can move upward by releasing the coupling 24.

[0021] As a further provision of the above scheme, the main valve section 11 and the auxiliary valve section 12 are respectively provided with valve seat grooves 14 for mounting the sealing seat 4.

[0022] As a further feature of the above scheme, the secondary valve section 12 is fixedly connected to the main valve section 11 by bolts 13.

[0023] As a further provision of the above solution, the valve body 1 is also provided with a bottom cover 18, the bottom cover 18 is directly opposite the lower end of the valve stem 2, and the lower end of the valve stem 2 abuts against the bottom cover 18. In the ball valve structure of this embodiment, the lower valve shaft 21 of the valve stem 2 can be disassembled by removing the bottom cover 18.

[0024] As a further provision of the above solution, the sealing seat 4 includes a valve seat body 41, a soft seal 42, and a top spring 43. The top spring 43 is located between the valve seat body 41 and the main valve part 11 and the auxiliary valve part 12. The top spring 43 is located between the valve seat body 41 and the ball 3. In this embodiment, the sealing seat 4 includes two valve seat bodies 41 clamped on both sides of the ball 3, and the soft seal 42 is provided to fit against the ball 3. Furthermore, a top spring 43 is provided to push the valve seat body 41 and the soft seal 42 toward the ball 3. During use, when the elasticity of the soft seal 42 decreases due to aging or wear, the top spring 43 can enhance the sealing effect.

[0025] refer to Figure 1 and Figure 2 The soft-seal ball valve of this embodiment, such as Figure 1 As shown, the ball valve in this embodiment includes a valve body 1 and a valve stem 2 with one end extending into the valve body 1 and the other end connected to the actuator 8. The valve body 1 is also provided with a medium flow channel 6. (Refer to...) Figure 2 The valve body 1 is also provided with a valve cavity 5, and a ball 3 is provided in the valve cavity 5. The valve stem 2 is connected to the ball 3. The valve stem 2 can be driven by the actuator 8 to drive the ball 3 to rotate, so that the flow hole 7 is connected to or misaligned with the medium flow channel 6.

[0026] refer to Figure 2 As shown, for ease of disassembly, the valve body 1 of the ball valve in this embodiment is configured as a main valve part 11 and a secondary valve part 12, which are connected and fixed by bolts 13 to form the main body of the valve body 1. After the main valve part 11 and the secondary valve part 12 are installed as described above, a valve cavity 5 is formed in the middle. The ball 3 is placed in the valve cavity 5 and a sealing seat 4 is provided to seal against the ball 3. When the ball 3 rotates, the sealing seat 4 is used to cooperate with the flow hole 7 and the medium flow channel 6 to flow in the same direction.

[0027] When disassembling and repairing the ball valve in the above embodiment, the screws of the coupling 24 can be removed first. Then, the bottom cover 18 can be removed to disassemble the lower valve shaft 21. After removing the bolts 13, the main valve part 11 and the auxiliary valve part 12 can be separated. After separation, the middle valve shaft 22 can be moved upward to separate it from the ball 3. In this way, the left sealing seat 4, the ball 3, and the right sealing seat 4 between the two can be disassembled in sequence. After cleaning, they can be installed in reverse.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A soft-seal ball valve that is easy to disassemble and assemble, comprising a valve body (1), a valve stem (2), and a ball (3), characterized in that: The valve body (1) includes a main valve section (11) and a secondary valve section (12). The main valve section (11) and the secondary valve section (12) are also provided with sealing seats (4), and the two together form a valve cavity (5) for accommodating a ball (3). The ball (3) is abutted between the two sealing seats (4). The ball (3) is driven to rotate by the valve stem (2) to connect and switch the medium flow channel (6) provided on the valve body (1) with the flow hole (7) on the ball (3). The valve stem (2) includes a lower valve shaft (2). 1) The middle valve shaft (22) and the upper valve shaft (23) extend out of the valve body (1) and are provided with a coupling (24) to circumferentially link the upper valve shaft (23). The upper valve shaft (23) is also connected to the main shaft of the valve actuator (8). The coupling (24) includes two housings (242) that form an annular shape and have a square inner groove (241). The middle valve shaft (22) and the upper valve shaft (23) are also provided with square parts (243) that match the square inner groove (241).

2. The easily disassembled soft-seal ball valve according to claim 1, characterized in that: The main valve section (11) and the auxiliary valve section (12) are respectively provided with valve seat grooves (14) for installing the sealing seat (4).

3. The easily detachable soft-seal ball valve according to claim 1, characterized in that: The secondary valve (12) is fixedly connected to the main valve (11) by bolts (13).

4. The easily detachable soft-seal ball valve according to claim 1, characterized in that: The valve body (1) is also provided with a bottom cover (18), which is directly opposite the lower end of the valve stem (2), and the lower end of the valve stem (2) abuts against the bottom cover (18).

5. The easily disassembled soft-seal ball valve according to claim 1, characterized in that: The sealing seat (4) includes a valve seat body (41), a soft sealing element (42), and a top spring element (43). The top spring element (43) is disposed between the valve seat body (41) and the main valve part (11) and the auxiliary valve part (12). The top spring element (43) is disposed in contact with the valve seat body (41) and the ball (3).

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