Internal control valve structure of pipeline

Abstract

The utility model discloses a pipeline internal control valve structure which comprises a shell, a connecting block is arranged on the shell, a sealing operation disc is arranged at the top of the connecting block, a ball valve sealing body is fixedly arranged at the bottom of the connecting block, sealing blocks are arranged on the two sides of the ball valve sealing body, and a through hole is formed in the middle of the ball valve sealing body. When the two sealing blocks are used for sealing in the rotating process of the sealing operation board, the compensation operation board can be selected and used for driving the main shaft with the threads to rotate; threaded connection between the nut and the spindle with the thread is utilized to drive the nut to move downwards to press the push rod so as to push the fixing piece and the sealing block to integrally move outwards, sealing compensation is carried out, gaps generated by friction and other factors are compensated and sealed back, and therefore the replacement rate of products is reduced, the maintenance cost is reduced, and the service life is prolonged. And the sealing effect is not changed.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline control valves, and in particular relates to a pipeline internal control valve structure. Background Art

[0002] Ball valves can be used for fluid regulation and control. In pipelines, they can not only flexibly control the confluence, diversion, and flow direction switching of media, but also close any channel to connect the other two channels.

[0003] When the ball valves used in traditional pipelines are used for too long or when they expand and contract due to heat or cold, gaps will form between the friction fits, causing seal leakage. In addition, friction will also cause wear and tear over a period of time due to long-term use, resulting in some large ball valves requiring regular maintenance. There are also many precautions when using them, making operation inconvenient. Utility Model Content

[0004] The utility model aims to provide a pipeline internal control valve structure to solve the above-mentioned problem.

[0005] To achieve the above object, the utility model provides the following technical solution: a pipeline internal control valve structure, comprising a housing, a connection block is arranged on the housing, a sealing operation disk is arranged on the top of the connection block and a ball valve sealing body is fixedly arranged on the bottom, sealing blocks are arranged on both sides of the ball valve sealing body and a through hole is opened in the middle;

[0006] A threaded main shaft is movably connected to the inside of the sealed operating panel via a sealed bearing. One end of the threaded main shaft extends into the through hole and a nut is sleeved on the outside. Push rods are hinged on both sides of the nut. A fixing piece is hinged on the end of the push rod away from the nut, and the fixing piece is fixedly connected to the sealing block.

[0007] Preferably, an installation cavity is provided at the top of the through hole, the push rod and the fixing member are both placed inside the installation cavity, the threaded main shaft is threadedly connected to the nut, and the cross-section of the sealing block is larger than the cross-section of the connecting pipe for easy sealing.

[0008] Preferably, a T-shaped slider is provided between the sealing block and the ball valve sealing body and the T-shaped slider is fixed on the sealing block, a T-shaped groove is provided on the ball valve sealing body and the T-shaped groove allows the T-shaped slider to move a certain distance inside the T-shaped groove.

[0009] Preferably, the top of the threaded spindle extends out of the top of the sealing operating disk and is connected to a compensating operating disk that can operate the threaded spindle.

[0010] Preferably, connecting pipes are provided on both sides of the shell, and flanges are provided on the connecting pipes.

[0011] The technical effects and advantages of the utility model are as follows: while two sealing blocks can be used for sealing during the rotation of the sealing operating disk, a compensation operating disk can also be selected to drive the threaded main shaft to rotate using the compensation operating disk, and the threaded connection between the nut and the threaded main shaft is used to drive the nut to move downward to press the push rod, thereby pushing the fixing part and the sealing block to move outward as a whole to compensate for the seal, thereby compensating for the gap caused by friction and other factors and sealing it back, thereby reducing the product replacement rate and maintenance costs, increasing the service life, and the sealing effect remains unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the ball valve sealing body structure of the utility model;

[0014] Figure 3 It is a cross-sectional view of the utility model;

[0015] Figure 4 For the utility model Figure 3 A partial enlarged view of part A in the middle.

[0016] In the figure: 1. flange; 2. connecting pipe; 3. sealing operation panel; 4. compensation operation panel; 5. housing; 6. through hole; 7. ball valve sealing body; 8. connecting block; 9. sealing block; 10. mounting cavity; 11. nut; 12. push rod; 13. fixing part; 14. T-shaped slide groove; 15. T-shaped slider; 16. threaded main shaft. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] The utility model provides a pipeline internal control valve structure as shown in the figure, including a housing 5, a connecting block 8 is arranged on the housing 5, a sealing operation disk 3 is arranged on the top of the connecting block 8 and a ball valve sealing body 7 is fixedly arranged on the bottom, sealing blocks 9 are arranged on both sides of the ball valve sealing body 7 and a through hole 6 is opened in the middle;

[0019] A threaded main shaft 16 is movably connected to the inside of the sealing operating panel 3 through a sealing bearing. One end of the threaded main shaft 16 extends to the inside of the through hole 6 and a nut 11 is sleeved on the outside. Push rods 12 are hinged on both sides of the nut 11. A fixing part 13 is hinged on the end of the push rod 12 away from the nut 11. The fixing part 13 is fixedly connected to the sealing block 9.

[0020] Specifically, an installation cavity 10 is provided at the top of the through hole 6, the push rod 12 and the fixing member 13 are both placed inside the installation cavity 10, the threaded main shaft 16 and the nut 11 are threadedly connected, and the cross-section of the sealing block 9 is larger than the cross-section of the connecting pipe 2 for easy sealing.

[0021] Specifically, a T-shaped slider 15 is provided between the sealing block 9 and the ball valve sealing body 7 and is fixed on the sealing block 9. A T-shaped groove 14 is provided on the ball valve sealing body 7 and the T-shaped groove 14 allows the T-shaped slider 15 to move a certain distance inside the groove.

[0022] Specifically, the top of the threaded main shaft 16 extends out of the top of the sealing operating disk 3 and is connected to the compensating operating disk 4 that can operate the threaded main shaft 16 .

[0023] Specifically, connecting pipes 2 are provided on both sides of the shell 5 , and flanges 1 are provided on the connecting pipes 2 .

[0024] Working principle: When using the utility model, the valve switch is closed by rotating the sealing operating disk 3. Then, when a slight leakage occurs, the two sealing blocks 9 can be used to seal during the rotation of the sealing operating disk 3. The compensation operating disk 4 can also be selected to use the compensation operating disk 4 to drive the threaded main shaft 16 to rotate, and the threaded connection between the nut 11 and the threaded main shaft 16 drives the nut 11 to move downward to press the push rod 12, thereby pushing the fixing part 13 and the sealing block 9 to move outward as a whole to compensate for the seal, thereby compensating for the gap caused by factors such as friction and sealing it back, thereby reducing the product replacement rate and maintenance costs, increasing the service life, and the sealing effect remains unchanged. Then, by using the cooperation between the T-shaped slider 15 and the T-shaped slot 14, it can be achieved that when the sealing block 9 has moved for compensation, it can achieve linear movement without any offset.

[0025] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A pipeline internal control valve structure, comprising a housing (5), characterized in that: The housing (5) is provided with a connection block (8), the top of the connection block (8) is provided with a sealing operation panel (3) and the bottom is fixedly provided with a ball valve sealing body (7), the ball valve sealing body (7) is provided with sealing blocks (9) on both sides and a through hole (6) is opened in the middle; The sealing operation panel (3) is movably connected to a threaded main shaft (16) via a sealing bearing. One end of the threaded main shaft (16) extends into the through hole (6) and a nut (11) is sleeved on the outside. Push rods (12) are hinged on both sides of the nut (11). One end of the push rod (12) away from the nut (11) is hinged to a fixing member (13). The fixing member (13) is fixedly connected to the sealing block (9).

2. A pipeline internal control valve structure according to claim 1, characterized in that: The top end of the through hole (6) is provided with a mounting cavity (10), the push rod (12) and the fixing member (13) are both placed inside the mounting cavity (10), the threaded main shaft (16) and the nut (11) are threadedly connected, and the cross-section of the sealing block (9) is larger than the cross-section of the connecting pipe (2) for easy sealing.

3. The pipeline internal control valve structure according to claim 1, characterized in that: A T-shaped slider (15) is provided between the sealing block (9) and the ball valve sealing body (7), and the T-shaped slider (15) is fixed on the sealing block (9). A T-shaped slide groove (14) is provided on the ball valve sealing body (7), and the T-shaped slide groove (14) allows the T-shaped slider (15) to move a certain distance inside the T-shaped slide groove (14).

4. The pipeline internal control valve structure according to claim 1, characterized in that: The top of the threaded main shaft (16) extends out of the top of the sealing operating disk (3) and is connected to a compensating operating disk (4) that can operate the threaded main shaft (16).

5. The pipeline internal control valve structure according to claim 1, characterized in that: Connecting pipes (2) are provided on both sides of the shell (5), and flanges (1) are provided on the connecting pipes (2).

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