Soft seal ball valve

Abstract

The utility model relates to the technical field of ball valves, and discloses a soft seal ball valve which comprises a first valve body, a second valve body and a ball body, the lower end of the ball body is rotatably connected with the first valve body, the upper end of the ball body is fixedly connected with a valve rod, and a connecting mechanism is arranged at the front end of the first valve body. The connecting mechanism comprises a rotating ring, four connecting cylinders and four connecting rods, the inner wall of the rotating ring is rotationally connected with the second valve body, the periphery of the rear end of the outer wall of the second valve body is fixedly connected with the connecting cylinders, the periphery of the middle of the outer wall of the first valve body is fixedly connected with the connecting rods, and the connecting rods are slidably connected with the connecting cylinders. According to the utility model, the first valve body and the second valve body are connected through the sliding connection of the connecting rod and the connecting cylinder in the connecting mechanism, the clamping connection of the clamping block and the connecting rod and the fixation of the fixing bolt, and the clamping connection of the connecting rod can be released by taking down the fixing bolt and rotating the rotating ring, so that the disassembly and assembly of the valve bodies are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a soft-sealed ball valve. Background Technique

[0002] A ball valve is a common fluid control valve that controls the flow of liquid or gas by rotating a sphere, and is divided into a soft-sealed ball valve and a hard-sealed ball valve. The soft-sealed ball valve among them refers to a ball valve that realizes sealing through a soft sealing material.

[0003] However, most of the existing soft-sealed ball valves on the market are not convenient for the disassembly and installation of the valve body, resulting in difficulty for the staff to disassemble the valve body, clean and maintain the inside of the valve body, and assemble it after the cleaning and maintenance work is completed, increasing the operation complexity of the staff.

[0004] Therefore, the technical personnel in this field provide a soft-sealed ball valve to solve the problems raised in the above background technique. Content of the Utility Model

[0005] The purpose of the content of the utility model is to solve the deficiencies existing in the prior art, and provide a soft-sealed ball valve. The connecting rod in the connecting mechanism is slidably connected with the connecting cylinder, and is clamped and connected with the connecting rod by a clamping block and fixed by a fixing bolt, so that the first valve body and the second valve body are connected. Removing the fixing bolt and rotating the rotating ring can release the clamping of the connecting rod, which is convenient for the disassembly and assembly of the valve body.

[0006] To achieve the above purpose, the utility model provides a soft-sealed ball valve, including a first valve body, a second valve body and a sphere. The lower end of the sphere is rotatably connected with the first valve body, the upper end of the sphere is fixedly connected with a valve rod, a connecting mechanism is arranged at the front end of the first valve body, and the connecting mechanism includes a rotating ring, four connecting cylinders and four connecting rods. The inner wall of the rotating ring is rotatably connected with the second valve body, and the peripheries at the rear end of the outer wall of the second valve body are fixedly connected with the connecting cylinders;

[0007] The peripheries at the middle part of the outer wall of the first valve body are fixedly connected with the connecting rods, the connecting rods are slidably connected with the connecting cylinders, the peripheries of the outer wall of the rotating ring are fixedly connected with clamping blocks, one end of each clamping block penetrates through the connecting cylinder and is clamped and connected with the connecting rod, and fixing bolts are threadedly connected to both sides of the outer wall of the rotating ring;

[0008] Through the above technical solution, the connecting rod is slidably connected with the connecting cylinder, the clamping block passes through the connecting cylinder and is clamped and connected with the connecting rod, and is fixed by a fixing bolt, so that the first valve body and the second valve body are connected. Removing the fixing bolt and rotating the rotating ring drives the clamping block to release the clamping state of the connecting rod, which is convenient for the disassembly and assembly of the valve body.

[0009] Further, a first connection disk is fixedly connected to the rear end of the first valve body, and a second connection disk is fixedly connected to the front end of the second valve body;

[0010] Through the above technical solution, the first connection disk and the second connection disk fixedly connected to the first valve body and the second valve body cooperate with a plurality of bolts and nuts to be connected to an external pipeline, so that the valve is connected to the pipeline system.

[0011] Further, a sealing ring is arranged at the opening on the upper end of the first valve body, and the outer wall of the valve stem is in close fit with the sealing ring;

[0012] Through the above technical solution, by closely fitting the sealing ring made of polytetrafluoroethylene material arranged in the opening of the first valve body with the valve stem, the gap between the valve stem and the first valve body is filled, improving the sealing ability of the valve.

[0013] Further, a pressing plate is fixedly connected to the upper end of the first valve body by bolts, and the upper end of the valve stem penetrates through the first valve body and the pressing plate and is fixedly connected with a handle;

[0014] Through the above technical solution, the pressing plate is fixed on the first valve body by four bolts, so that the sealing ring is pressed tightly, improving the degree of fit with the valve stem, and the handle fixedly connected to the upper end of the valve stem can drive the sphere to rotate inside the first valve body to change the opening and closing of the valve.

[0015] Further, one side of the fixing bolts close to the center of the second valve body all penetrates through the rotating ring and is threadedly connected with the second valve body;

[0016] Through the above technical solution, after the fixing bolts penetrate through the rotating ring and are threadedly connected with the second valve body, the rotating ring is firmly fixed on the second valve body and will not rotate after being restricted by the fixing bolts, so that the clamping block maintains the clamping state of the connecting rod, preventing the connecting rod from sliding out of the connecting cylinder.

[0017] Further, a sealing ring is fixedly connected to the rear end of the second valve body, and the rear end of the sealing ring is in close fit with the first valve body;

[0018] Through the above technical solution, the sealing ring fixedly connected to the rear end of the second valve body is in close fit with the first valve body, and the sealing ring is made of rubber material, so that the connection gap between the valve bodies can be filled, improving the sealing performance of the valve bodies.

[0019] Further, a first sealing block is fixedly connected to the front end of the inner wall of the first valve body, a second sealing block is fixedly connected to the rear end of the inner wall of the second valve body, and the outer walls of the front end and the rear end of the sphere are respectively in close fit with the second sealing block and the first sealing block;

[0020] Through the above technical solution, the first sealing block and the second sealing block made of polytetrafluoroethylene material fixedly connected to the inner walls of the first valve body and the second valve body are closely attached to the sphere, so that when the opening of the sphere is perpendicular to the valve flow path, the first sealing block and the second sealing block can fill the gaps between the sphere and the first valve body and the second valve body, preventing the fluid from flowing continuously.

[0021] The utility model has the following beneficial effects:

[0022] A soft-sealing ball valve proposed by the utility model is connected by four connecting rods in the connecting mechanism slidingly connected with four connecting cylinders. The clamping block passes through the connecting cylinder and is clamped and connected with the connecting rod, and is fixed by a fixing bolt, so that the first valve body and the second valve body are connected. Removing the fixing bolt and rotating the rotating ring drives the clamping block to release the clamping state of the connecting rod, thereby facilitating the disassembly and assembly of the valve body, enabling the staff to carry out cleaning and maintenance work inside, and reducing the operation complexity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the main structure of a soft-sealing ball valve proposed by the utility model;

[0024] Figure 2 is an exploded view of a soft-sealing ball valve proposed by the utility model;

[0025] Figure 3 is a side sectional view of a soft-sealing ball valve proposed by the utility model;

[0026] Figure 4 is a top sectional view of a soft-sealing ball valve proposed by the utility model;

[0027] Figure 5 is a front sectional view of a soft-sealing ball valve proposed by the utility model;

[0028] Figure 6 is Figure 3 an enlarged view of part A in

[0029] Figure 7 is Figure 5 an enlarged view of part B in

[0030] DESCRIPTION OF THE REFERENCE NUMERALS:

[0031] 1. First valve body; 2. Second valve body; 3. First connection disk; 4. Second connection disk; 5. Sphere; 6. Valve stem; 7. Handle; 8. Pressure plate; 9. Connecting mechanism; 901. Rotating ring; 902. Clamping block; 903. Connecting cylinder; 904. Connecting rod; 905. Fixing bolt; 10. Sealing ring; 11. Sealing gasket; 12. First sealing block; 13. Second sealing block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, in combination with the accompanying drawings in the specific embodiments of the present utility model, the technical solutions in the specific embodiments of the present utility model will be clearly and completely described. Obviously, the described specific embodiments are only a part of the specific embodiments of the present utility model, rather than all of the specific embodiments. Based on the specific embodiments of the present utility model, all other specific embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] Referring to Figures 1-7 , the present utility model provides a specific embodiment: a soft-sealed ball valve, including a first valve body 1, a second valve body 2, and a ball 5. The lower end of the ball 5 is rotatably connected to the first valve body 1, and a valve stem 6 is fixedly connected to the upper end of the ball 5. A connecting mechanism 9 is provided at the front end of the first valve body 1. The connecting mechanism 9 includes a rotating ring 901, four connecting cylinders 903, and four connecting rods 904. The inner wall of the rotating ring 901 is rotatably connected to the second valve body 2, and the four peripheral parts at the rear end of the outer wall of the second valve body 2 are fixedly connected to the connecting cylinders 903;

[0034] The four peripheral parts at the middle of the outer wall of the first valve body 1 are fixedly connected to the connecting rods 904, and the connecting rods 904 are slidably connected to the connecting cylinders 903. The four peripheral parts of the outer wall of the rotating ring 901 are fixedly connected with clamping blocks 902. One end of each clamping block 902 penetrates through the connecting cylinder 903 and is clamped and connected to the connecting rod 904. Fixed bolts 905 are threadedly connected to both sides of the outer wall of the rotating ring 901.

[0035] By sliding the four connecting rods 904 in the connecting mechanism 9 with the four connecting cylinders 903, using the clamping blocks 902 to pass through the connecting cylinders 903 and be clamped and connected to the connecting rods 904, and fixing them with the fixed bolts 905, the first valve body 1 and the second valve body 2 are connected. Removing the fixed bolts 905 and rotating the rotating ring 901 to drive the clamping blocks 902 to release the clamping state of the connecting rods 904, thereby facilitating the disassembly and assembly of the valve body, facilitating the staff to perform cleaning and maintenance work inside, and reducing the operation complexity of the staff.

[0036] A first connection disk 3 is fixedly connected to the rear end of the first valve body 1, and a second connection disk 4 is fixedly connected to the front end of the second valve body 2. The first connection disk 3 and the second connection disk 4 fixedly connected to the first valve body 1 and the second valve body 2 cooperate with a plurality of bolts and nuts to be connected to an external pipeline, so that the valve is connected to the pipeline system. A sealing ring 10 is arranged at the opening on the upper end of the first valve body 1, and the outer wall of the rod body of the valve stem 6 is in close fit with the sealing ring 10. By closely fitting the sealing ring 10 made of polytetrafluoroethylene material arranged in the opening of the first valve body 1 with the valve stem 6, the gap between the valve stem 6 and the first valve body 1 is filled, improving the sealing ability of the valve. The upper end of the first valve body 1 is fixedly connected with a pressing plate 8 by bolts. The upper end of the valve stem 6 penetrates through the first valve body 1 and the pressing plate 8 and is fixedly connected with a handle 7. The pressing plate 8 is fixed on the first valve body 1 by four bolts, so that the sealing ring 10 is pressed tightly, improving the degree of fit with the valve stem 6. The handle 7 fixedly connected to the upper end of the valve stem 6 can drive the ball 5 to rotate inside the first valve body 1, changing the opening and closing of the valve. One side of the fixing bolts 905 close to the center of the second valve body 2 penetrates through the rotating ring 901 and is threadedly connected with the second valve body 2. By passing the fixing bolts 905 through the rotating ring 901 and then threadedly connecting with the second valve body 2, after being restricted by the fixing bolts 905, the rotating ring 901 is firmly fixed on the second valve body 2 and will not rotate, thereby keeping the latch 902 in a latched state with the connecting rod 904 and preventing the connecting rod 904 from sliding out of the connecting cylinder 903. A sealing ring 11 is fixedly connected to the rear end of the second valve body 2, and the rear end of the sealing ring 11 is in close fit with the first valve body 1. By closely fitting the sealing ring 11 fixedly connected to the rear end of the second valve body 2 with the first valve body 1, and the sealing ring 11 is made of rubber material, the connection gap between the valve bodies can be filled, improving the sealing performance of the valve bodies. A first sealing block 12 is fixedly connected to the front end of the inner wall of the first valve body 1, and a second sealing block 13 is fixedly connected to the rear end of the inner wall of the second valve body 2. The outer walls of the front end and the rear end of the ball 5 are in close fit with the second sealing block 13 and the first sealing block 12 respectively. By closely fitting the first sealing block 12 and the second sealing block 13 made of polytetrafluoroethylene material fixedly connected to the inner walls of the first valve body 1 and the second valve body 2 with the ball 5, when the opening of the ball 5 is perpendicular to the valve flow channel, the first sealing block 12 and the second sealing block 13 can fill the gap between the ball 5 and the first valve body 1 and the second valve body 2, preventing the fluid from flowing continuously.

[0037] Working principle: When using this soft-sealed ball valve, first, the staff uses multiple bolts and nuts to cooperate with the first connection plate 3 fixedly connected to the first valve body 1 and the second connection plate 4 fixedly connected to the second valve body 2 to connect with the external pipeline, and connect the valve to the pipeline system. After that, the staff can drive the ball 5 to rotate through the valve stem 6 by using the handle 7 to change the opening and closing of the valve. Secondly, the sealing ring 10 in the first valve body 1 is closely attached to the valve stem 6, the sealing ring 11 fixedly connected to the second valve body 2 is closely attached to the first valve body 1, and the first sealing block 12 and the second sealing block 13 in the first valve body 1 and the second valve body 2 are closely attached to the ball 5 to improve the overall sealing performance of the valve. Finally, after the staff removes the valve, they can unscrew the fixing bolt 905, rotate the rotating ring 901 clockwise to release the clamping state of the clamping block 902 on the connecting rod 904, and separate the first valve body 1 from the second valve body 2 for easy cleaning and maintenance. After that, the staff can insert the connecting rod 904 into the connecting cylinder 903, rotate the rotating ring 901 counterclockwise, and screw on the fixing bolt 905 to keep the clamping block 902 in the clamping state of the connecting rod 904 to complete the installation of the valve body.

[0038] Finally, it should be noted that the above are only the preferred specific embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soft-sealed ball valve, comprising a first valve body (1), a second valve body (2) and a ball (5), characterized in that: The lower end of the sphere (5) is rotatably connected to the first valve body (1). The upper end of the sphere (5) is fixedly connected to a valve rod (6). A connecting mechanism (9) is provided at the front end of the first valve body (1). The connecting mechanism (9) includes a rotating ring (901), four connecting cylinders (903) and four connecting rods (904). The inner wall of the rotating ring (901) is rotatably connected to the second valve body (2). The peripheries at the rear end of the outer wall of the second valve body (2) are all fixedly connected to the connecting cylinders (903). The peripheries at the middle of the outer wall of the first valve body (1) are all fixedly connected to the connecting rods (904). The connecting rods (904) are all slidably connected to the connecting cylinders (903). The peripheries of the outer wall of the rotating ring (901) are all fixedly connected with locking blocks (902). One end of each locking block (902) penetrates through the connecting cylinder (903) and is snap-connected to the connecting rod (904). Fixing bolts (905) are threadedly connected to both sides of the outer wall of the rotating ring (901).

2. The soft-sealed ball valve according to claim 1, characterized in that: A first connection disk (3) is fixedly connected to the rear end of the first valve body (1). A second connection disk (4) is fixedly connected to the front end of the second valve body (2).

3. A soft-sealed ball valve according to claim 1, characterized in that: A sealing ring (10) is provided at the opening at the upper end of the first valve body (1). The outer wall of the valve rod (6) is in close fit with the sealing ring (10).

4. A soft-sealed ball valve according to claim 1, characterized in that: The upper end of the first valve body (1) is fixedly connected with a pressing plate (8) by bolts. The upper end of the valve rod (6) penetrates through the first valve body (1) and the pressing plate (8) and is fixedly connected to a handle (7).

5. A soft-sealed ball valve according to claim 1, characterized in that: The sides of the fixing bolts (905) close to the center of the second valve body (2) penetrate through the rotating ring (901) and are threadedly connected to the second valve body (2).

6. A soft-sealed ball valve according to claim 1, characterized in that: A sealing ring (11) is fixedly connected to the rear end of the second valve body (2). The rear end of the sealing ring (11) is in close fit with the first valve body (1).

7. A soft-sealed ball valve according to claim 1, characterized in that: A first sealing block (12) is fixedly connected to the front end of the inner wall of the first valve body (1). A second sealing block (13) is fixedly connected to the rear end of the inner wall of the second valve body (2). The outer walls of the front end and the rear end of the sphere (5) are in close fit with the second sealing block (13) and the first sealing block (12) respectively.

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