Round ball head with sealing structure

Abstract

The utility model relates to the technical field of round ball heads, in particular to a round ball head with a sealing structure, and aims to solve the technical problems that the conventional round ball head and a sealing ring are not mounted together, and a large amount of time needs to be spent on disassembling and assembling the round ball head after the sealing ring is aged. According to the technical scheme, the round ball head with the sealing structure comprises a ball head body formed by polymerizing polyvinyl chloride, a connecting column, a first sealing assembly and a second sealing assembly; according to the ball valve, the first sealing assembly and the second sealing assembly are additionally arranged on an existing round ball head, the first sealing ring and the second sealing ring are directly installed on the round ball head, when the sealing rubber ring is replaced, the ball head body and the connecting column do not need to be disassembled from the ball valve, the time for disassembling and assembling the ball head body is saved, and the assembling and disassembling efficiency of the ball valve is improved. The speed of replacing the first sealing ring and the second sealing ring is increased, and the problem that a large amount of time needs to be spent on disassembling and assembling the circular ball head after the sealing rings are aged due to the fact that an existing circular ball head and the sealing rings are not installed together is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of round ball heads, and in particular relates to a round ball head with a sealing structure. Background Art

[0002] Due to the advantage of only needing to rotate 90 degrees and having very small torque to close tightly, ball valves are widely used in oil refining, long-distance pipelines, chemical industry, papermaking, water conservancy, electric power and other industries, and the round ball head is an important component in the ball valve for opening and closing pipelines.

[0003] At present, multiple sealing rings are installed between the existing circular ball head and the ball valve, and the sealing rings and the ball valve are not installed together. After the sealing rings in the ball valve are aged, the ball valve needs to be disassembled to replace the sealing rings. However, since the sealing rings are not installed on the circular ball head, the circular ball head needs to be removed from the ball valve when taking it out to replace the sealing rings.

[0004] Therefore, in order to solve the problem that the existing circular ball head and the sealing ring are not installed together, and a lot of time is needed to disassemble and assemble the circular ball head after the sealing ring is aged, the existing circular ball head is improved and a circular ball head with sealing decoupling is designed. The sealing structure is installed on the sealing ball head, which can be taken out together during disassembly, thereby reducing the difficulty of disassembly and assembly and reducing the disassembly and assembly time. Utility Model Content

[0005] In order to overcome the problem that the existing round ball head and the sealing ring are not installed together, it takes a lot of time to disassemble and assemble the round ball head after the sealing ring is aged.

[0006] The technical solution of the utility model is: a circular ball head with a sealing structure, including a ball head body, a connecting column, a first sealing component and a second sealing component formed by polymerization of polyvinyl chloride; a ball head body with grooves on left and right sides is arranged in a ball valve, a connecting column for fixing the ball head body inside the ball valve is installed on the ball head body, two left-right opposite first sealing components are installed on the outside of the ball head body, and two front-back opposite second sealing components are installed on the outside of the ball head body.

[0007] Preferably, by directly installing the No. 1 sealing component and the No. 2 sealing component on the circular ball head body and driving the ball head body to rotate by rotating the connecting column, the No. 1 sealing component and the No. 2 sealing component are exposed to the outside in turn, which facilitates the replacement of the sealing rubber ring. The ball head is made of polyvinyl chloride, which is not easy to rust when transporting liquids, thereby extending the service life.

[0008] Preferably, a slot is provided at the top of the ball head body, and a fastener matching the slot is fixedly connected to the bottom end of the connecting column. The connecting column passes through a hole provided on the side of the ball valve, and the ball head body is fixed to the bottom end of the connecting column through the slot and the fastener. The connecting column passing through the ball valve can fix the ball head body inside the ball valve, and the fastener can drive the ball head body to rotate.

[0009] Preferably, a limiting ring located above the snap-fit ​​is fixedly connected to the outer side of the connecting column, and the top of the limiting ring is in close contact with the inner wall of the ball valve. The limiting ring can limit the position of the connecting column, making it convenient to place the ball head body into the ball valve and fix it, thereby preventing the connecting column from extending too much, making the connection between the ball head body and the snap-fit ​​more difficult.

[0010] Preferably, a square twist column is fixedly connected to the top of the connecting column, and a handle for rotating the ball head body is sleeved on the outside of the square twist column. The square twist column and the connecting column connected to the bottom of the square twist column are rotated by the handle, and the ball head body is rotated by the rotating fastener to realize the switching of the ball valve.

[0011] Preferably, the outer side of the upper end of the connecting column is fixedly connected with a thread, and the outer side of the connecting column is screwed with a fixing sleeve that is close to the outer side of the ball valve. The fixing sleeve is screwed onto the outer side of the connecting column. The diameter of the fixing sleeve is larger than the hole on the ball valve through which the connecting column extends. The fixing sleeve cooperates with the limiting ring to play a limiting role to prevent the connecting column from moving up and down.

[0012] Preferably, the No. 1 sealing assembly includes a No. 1 support ring and a No. 1 sealing ring; the outer sides of the inlet and outlet of the ball head body are fixedly connected with left and right supporting rings opposite each other, and the No. 1 sealing ring is sleeved on the No. 1 support ring. The No. 1 support ring can fix the No. 1 sealing ring, making it convenient to install the No. 1 sealing ring on it. The sealing ring can fill the gap between the ball head body and the ball valve pipeline to avoid leakage.

[0013] Preferably, the No. 2 sealing assembly includes a No. 2 support ring and a No. 2 sealing ring; the front and rear sides of the ball head body are fixedly connected with front and rear opposing No. 2 support rings, and the No. 2 sealing ring is sleeved on the No. 2 support ring. The No. 2 support ring can fix the No. 2 sealing ring, making it convenient to install the No. 2 sealing ring on the No. 2 fixing ring.

[0014] Beneficial effects of the utility model:

[0015] 1. By adding No. 1 and No. 2 sealing components to the existing round ball head, the No. 1 and No. 2 sealing rings are directly installed on the round ball head instead of inside the ball valve. When replacing the sealing rubber ring, there is no need to remove the ball head body and the connecting column from the ball valve. You only need to twist the handle to drive the ball head body to rotate, so that the No. 1 and No. 2 sealing components can be exposed to the outside, saving the time of disassembling and assembling the ball head body and improving the speed of replacing the No. 1 and No. 2 sealing rings.

[0016] 2. Fix the connecting column to the ball valve by screwing a fixing sleeve on the connecting column. The diameter of the fixing sleeve is larger than the hole opened at the top of the ball valve. The fixing sleeve is close to the outside of the ball valve to form a support to prevent the connecting column from sliding down due to gravity, thereby simplifying the fixing method of general ball valve bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The first three-dimensional structure schematic diagram of the circular ball head with a sealing structure of the utility model is shown;

[0018] Figure 2 The second three-dimensional structure schematic diagram of the circular ball head with a sealing structure of the utility model is shown;

[0019] Figure 3 The figure shows the three-dimensional structure of the circular ball head slot with a sealing structure and the ball head body of the utility model;

[0020] Figure 4 The first three-dimensional structure schematic diagram of the circular ball head connecting column with a sealing structure of the utility model is shown;

[0021] Figure 5 The second three-dimensional structure schematic diagram of the circular ball head connecting column with a sealing structure of the utility model is shown;

[0022] Figure 6 What is shown is a three-dimensional structural schematic diagram of a circular ball head fixing sleeve with a sealing structure of the utility model.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. ball head body; 2. connecting column; 3. slot; 4. snap fastener; 5. limiting ring; 6. square screw column; 7. handle; 8. fixing sleeve; 901. support ring No. 1; 902. sealing ring No. 1; 903. support ring No. 2; 904. sealing ring No. 2. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-2The utility model provides an embodiment: a circular ball head with a sealing structure comprises a ball head body 1, a connecting column 2, a first sealing component and a second sealing component which are polymerized by polyvinyl chloride; a ball head body 1 with notches on the left and right sides is arranged in the ball valve, a connecting column 2 for fixing the ball head body 1 in the ball valve is installed on the ball head body 1, two left and right opposite first sealing components are installed on the outside of the ball head body 1, and two front and back opposite second sealing components are installed on the outside of the ball head body 1, by directly installing the first sealing component and the second sealing component on the circular ball head body 1 and rotating the connecting column 2 to drive the ball head body 1 to rotate, the first sealing component and the second sealing component are exposed to the outside in turn, which is convenient for replacing the sealing rubber ring, and the ball head is made of polyvinyl chloride, is not easy to rust when transporting liquids, and has a prolonged service life.

[0026] See also Figure 3-6 In this embodiment, a card slot 3 is provided at the top of the ball head body 1, and a card fastener 4 matching the card slot 3 is fixedly connected to the bottom end of the connecting column 2. The connecting column 2 passes through the hole provided on the side of the ball valve, and a limit ring 5 located above the card fastener 4 is fixedly connected to the outside of the connecting column 2. The top of the limit ring 5 is tightly attached to the inner wall of the ball valve, and a square screw column 6 is fixedly connected to the top of the connecting column 2. A handle 7 for rotating the ball head body 1 is sleeved on the outside of the square screw column 6. A thread is fixedly connected to the outside of the upper end of the connecting column 2, and a fixing sleeve 8 tightly attached to the outside of the ball valve is screwed on the outside of the connecting column 2. The ball head body 1 is fixed to the bottom end of the connecting column 2 through the card slot 3 and the card fastener 4, and the connecting column 2 passing through the ball valve is fixedly connected to the top of the connecting column 2. The ball head body 1 can be fixed inside the ball valve, the ball head body 1 can be pushed to rotate by the snap fastener 4, the limit ring 5 can limit the position of the connecting column 2, so that the ball head body 1 is conveniently placed in the ball valve and fixed, and the connecting column 2 is prevented from extending too much, which makes the connection between the ball head body 1 and the snap fastener 4 more difficult. The square screw column 6 and the connecting column 2 connected under the square screw column 6 are driven to rotate by the handle 7, and the rotation of the snap fastener 4 drives the ball head body 1 to realize the opening and closing of the ball valve. The diameter of the fixing sleeve 8 is larger than the hole for extending the connecting column 2 opened on the ball valve, and it cooperates with the limit ring 5 to play a limiting role to prevent the connecting column 2 from moving up and down.

[0027] See also Figure 1-3In this embodiment, the No. 1 sealing component includes a No. 1 support ring 901 and a No. 1 sealing ring 902; the outer sides of the inlet and outlet of the ball head body 1 are fixedly connected with the left and right opposite support rings 901, and the No. 1 support ring 901 is sleeved with the No. 1 sealing ring 902, and the No. 2 sealing component includes a No. 2 support ring 903 and a No. 2 sealing ring 904; the front and rear sides of the ball head body 1 are fixedly connected with the front and rear opposite support rings 903, and the No. 2 support ring 903 is sleeved with the No. 2 sealing ring 904. The No. 1 support ring 901 can fix the No. 1 sealing ring 902, which is convenient for installing the No. 1 sealing ring 902 thereon. The sealing ring can make up for the gap between the ball head body 1 and the ball valve pipeline to avoid leakage. The No. 2 support ring 903 can fix the No. 2 sealing ring 904, which is convenient for installing the No. 2 sealing ring 904 on the No. 2 fixing ring.

[0028] When working, the staff first aligns the end of the connecting column 2 that is fixed with the square screw column 6 with the hole opened at the top of the ball valve and inserts the connecting column 2 so that the limit plate is close to the inner wall of the ball valve, then takes out the ball head body 1, sleeves the No. 1 sealing ring 902 on the No. 1 support ring 901, and then sleeves the No. 2 sealing ring 904 on the No. 2 support ring 903;

[0029] Align the two sides of the notch of the ball head body 1 with the closed inner wall of the ball valve, then insert the ball head body 1 into the ball valve, so that the snap-fit ​​piece 4 of the connecting column 2 is inserted into the slot 3 opened on the ball head body 1, take out the fixing sleeve 8, screw it on the connecting column 2 to fix it, and prevent the connecting rod from automatically sliding down due to gravity, take out the handle 7 and sleeve it on the square screw column 6, and then fix the two halves of the ball valve together with bolts and connect the pipeline;

[0030] The ball valve is usually in a closed state. When the ball valve needs to be opened, the staff holds the handle 7 and turns it 90 degrees. The handle 7 drives the connecting column 2 and the clamping member 4 installed under the connecting column 2 to rotate. Since the clamping member 4 is clamped in the clamping groove 3, it will drive the ball valve to rotate, and the side with the notch is rotated 90 degrees to align with the pipeline connection port on the ball valve to open the pipeline.

[0031] When the No. 1 sealing ring 902 and the No. 2 sealing ring 904 are aged, remove the ball valve from the pipeline, then remove the general ball valve, expose the ball head body 1 to the outside, take out the No. 1 sealing ring 902 on it for replacement, then turn the handle 7 to drive the ball valve to rotate and remove the No. 2 sealing ring 904 from it.

[0032] Through the above steps, the existing circular ball head is equipped with a No. 1 sealing component and a No. 2 sealing component, and the No. 1 sealing ring 902 and the No. 2 sealing ring 904 are directly installed on the circular ball head instead of inside the ball valve. When replacing the sealing rubber ring, there is no need to remove the ball head body 1 and the connecting column 2 from the ball valve. It is only necessary to turn the handle 7 to drive the ball head body 1 to rotate, so that the No. 1 sealing component and the No. 2 sealing component can be exposed to the outside, which saves the time for disassembling and assembling the ball head body 1 and improves the speed of replacing the No. 1 sealing ring 902 and the No. 2 sealing ring 904, so as to solve the problem that the existing circular ball head and the sealing ring are not installed together, and it takes a lot of time to disassemble and assemble the circular ball head after the sealing ring is aged.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A round ball head with a sealing structure, comprising a ball head body (1) made of polyvinyl chloride and a connecting column (2); characterized in that: It also includes a No. 1 sealing component and a No. 2 sealing component; a ball head body (1) with grooves on the left and right sides is arranged inside the ball valve, a connecting column (2) is installed on the ball head body (1) to fix the ball head body (1) inside the ball valve, two No. 1 sealing components are installed on the outside of the ball head body (1) opposite to each other on the left and right, and two No. 2 sealing components are installed on the outside of the ball head body (1) opposite to each other on the front and back.

2. A round ball head with a sealing structure according to claim 1, characterized in that: A slot (3) is provided at the top of the ball head body (1), a buckle (4) matching the slot (3) is fixedly connected to the bottom of the connecting column (2), and the connecting column (2) passes through a hole provided on the side of the ball valve.

3. A round ball head with a sealing structure according to claim 2, characterized in that: A limiting ring (5) located above the snap-fit ​​component (4) is fixedly connected to the outer side of the connecting column (2), and the top end of the limiting ring (5) is tightly attached to the inner wall of the ball valve.

4. The round ball head with a sealing structure according to claim 1, characterized in that: A square screwing column (6) is fixedly connected to the top of the connecting column (2), and a handle (7) for rotating the ball head body (1) is sleeved on the outer side of the square screwing column (6).

5. The round ball head with a sealing structure according to claim 1, characterized in that: The outer side of the upper end of the connecting column (2) is fixedly connected with a thread, and the outer side of the connecting column (2) is screwed with a fixing sleeve (8) which is closely attached to the outer side of the ball valve.

6. The round ball head with a sealing structure according to claim 1, characterized in that: The No. 1 sealing assembly comprises a No. 1 supporting ring (901) and a No. 1 sealing ring (902); the outer sides of the inlet and outlet of the ball head body (1) are fixedly connected with the No. 1 supporting rings (901) opposite to each other on the left and right, and the No. 1 sealing ring (902) is sleeved on the No. 1 supporting ring (901).

7. A round ball head with a sealing structure according to claim 6, characterized in that: The No. 2 sealing assembly comprises a No. 2 supporting ring (903) and a No. 2 sealing ring (904); the No. 2 supporting rings (903) facing each other are fixedly connected to the front and rear sides of the ball head body (1), and the No. 2 sealing ring (904) is sleeved on the No. 2 supporting ring (903).

Images