Self-sealing zero-leakage instrument pipe fitting

Abstract

The utility model belongs to the technical field of instrument pipe fitting self-sealing, and particularly relates to a self-sealing zero-leakage instrument pipe fitting which comprises a pipe fitting body and a connecting pipe, a valve is installed on the pipe fitting body, a connecting rod is installed in the valve through threads, a conical column is installed at the bottom end of the connecting rod, and a manual rotating disc is installed at the top end of the connecting rod. According to the self-sealing zero-leakage instrument pipe fitting, the positioning plate, the guide rod, the positioning piece, the baffle, the fixing plate and the receding groove are used in cooperation, the position of the baffle can be conveniently moved, self-resetting of the baffle is facilitated, the sealing effect of the pipe fitting body can be improved, water can be prevented from flowing back, the product can be conveniently used for a long time, and the practicability is high. And the product is not easy to age, so that the influence on the sealing effect of pipe fitting connection is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of self-sealing instrument pipe fittings, and in particular relates to a self-sealing zero-leakage instrument pipe fitting. Background Art

[0002] Instrument fittings are used in pipeline connections or control systems. They are used to change the direction of pipelines, branch pipelines, or connect pipes of different sizes. Because instrument fittings can connect two or more pipelines, they need to have a high degree of sealing to ensure that there will be no leakage at the pipeline connection. If the inner diameter of the pipeline connection changes, the pressure will also change. Therefore, instrument fittings also need to have a certain strength to ensure that they will not be damaged.

[0003] At present, the sealing rings in embedded pipe fittings with built-in sealing rings are mostly circular in cross-section. When the pipe is connected to the pipe fitting, the sealing ring is simply squeezed between the gap between the pipe and the pipe fitting. After long-term use, the sealing ring is very easy to age, which affects the sealing effect of the pipe fitting connection. In actual use, it has certain limitations. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the utility model provides a self-sealing zero-leakage instrument pipe fitting, which has the characteristic of being easy to seal the pipe fitting.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a self-sealing zero-leakage instrument pipe fitting, comprising a pipe fitting body and a connecting pipe, a valve is installed on the pipe fitting body, a connecting rod is installed in the valve through a thread, a conical column is installed at the bottom end of the connecting rod, and a manual turntable is installed at the top end;

[0006] Both ends of the connecting pipe are equipped with connecting pipe openings, and the first positioning ring and the second positioning ring are installed inside the two connecting pipe openings. A positioning plate is also installed inside the connecting pipe. The interior of the connecting pipe is tightly fitted with a fixing plate installed on the rear end of the second positioning ring, and a guide rod passes through the positioning plate. A positioning piece is installed at one end of the guide rod and a baffle is installed at the other end. An avoidance groove for embedding the baffle is opened on the fixing plate, and a return spring is provided on the outer wall of the guide rod, and the return spring is located between the positioning plate and the baffle.

[0007] As a preferred technical solution of the utility model, a fixing rod is installed at the rear end of the baffle, and the tail end of the fixing rod passes through the positioning plate.

[0008] As a preferred technical solution of the present utility model, the diameter of the baffle is larger than the inner diameter of the second positioning ring.

[0009] As a preferred technical solution of the utility model, a plurality of water flow grooves are also provided on the positioning plate.

[0010] As a preferred technical solution of the present invention, the width of the positioning plate is smaller than the inner diameter of the connecting pipe.

[0011] As a preferred technical solution of the present invention, the length of the fixing rod is consistent with the length of the guide rod.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: in the utility model, a self-sealing zero-leakage instrument pipe fitting can facilitate the movement of the baffle through the coordinated use of the positioning plate, guide rod, positioning sheet, baffle, fixing plate and avoidance groove, which is beneficial for the self-resetting of the baffle, and can not only increase the sealing effect of the pipe fitting body, but also prevent water backflow, so as to facilitate the long-term use of the product, and the product is not easy to age, thereby avoiding affecting the sealing effect of the pipe fitting connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the exploded structure of the pipe fitting body in the utility model;

[0016] Figure 3 It is a schematic diagram of the enlarged structure of A in the utility model;

[0017] In the figure: 1. pipe fitting body; 2. valve; 3. manual turntable; 4. connecting pipe; 5. connecting pipe mouth; 6. first positioning ring; 7. conical column; 8. connecting rod; 9. positioning plate; 10. guide rod; 11. positioning sheet; 12. baffle; 13. fixing plate; 14. avoidance groove; 15. second positioning ring; 16. reset spring; 17. water flow groove; 18. fixing rod. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-Figure 3The utility model provides the following technical solutions: In this embodiment, a self-sealing zero-leakage instrument pipe fitting includes a pipe fitting body 1 and a connecting pipe 4, a valve 2 is installed on the pipe fitting body 1, a connecting rod 8 is installed in the valve 2 through a thread, a conical column 7 is installed at the bottom end of the connecting rod 8, and a manual turntable 3 is installed at the top end;

[0020] Both ends of the connecting pipe 4 are equipped with connecting pipe openings 5, and the first positioning ring 6 and the second positioning ring 15 are distributed inside the two connecting pipe openings 5. A positioning plate 9 is also installed inside the connecting pipe 4. The interior of the connecting pipe 4 is tightly fitted with a fixing plate 13 installed at the rear end of the second positioning ring 15. A guide rod 10 runs through the positioning plate 9, and a positioning piece 11 is installed at one end of the guide rod 10, and a baffle 12 is installed at the other end. An avoidance groove 14 for embedding the baffle 12 is opened on the fixing plate 13, and a reset spring 16 is provided on the outer wall of the guide rod 10, and the reset spring 16 is located between the positioning plate 9 and the baffle 12; when in use, the pipeline can be connected to the pipe fitting body 1, and the connecting pipe 4 can be rotated clockwise so that the connecting pipe opening 5 can be installed on the pipe fitting body 1, so that the pipe fitting body 1 can be sealed, and water flows from the pipeline into the pipe fitting. The inside of the main body 1, and then by rotating the manual turntable 3 counterclockwise, the connecting rod 8 drives the conical column 7 to move upward, so that water can flow into the inside of the connecting pipe 4 through the pipe main body 1. When water flows into the inside of the connecting pipe 4 through the pipe main body 1, the water will impact the baffle 12, causing it to move toward the position of the positioning plate 9. At the same time, the baffle 12 will squeeze the reset spring 16 to shrink it. When it is necessary to seal the pipe main body 1, the manual turntable 3 can be rotated clockwise to block the conical column 7 to block the pipe main body 1, and the water will stop flowing. At this time, the reset spring 16 will release the elastic force to push the baffle 12 to move, so that it is embedded in the avoidance groove 14. It can not only increase the sealing effect of the pipe main body 1, but also prevent water backflow, so as to facilitate long-term use of the product, and the product is not easy to age, thereby avoiding affecting the sealing effect of the pipe connection.

[0021] Specifically, by Figure 3 It can be seen that in this embodiment, a fixing rod 18 is installed at the rear end of the baffle 12, and the tail end of the fixing rod 18 passes through the positioning plate 9, which can increase the stability of the baffle 12 when moving and make it less likely to shake.

[0022] Specifically, by Figure 3 It can be seen that in this embodiment, the diameter of the baffle 12 is larger than the inner diameter of the second positioning ring 15 , so that the second positioning ring 15 can limit the baffle 12 to prevent it from moving to the inner wall of the pipe body 1 .

[0023] Specifically, by Figure 3 It can be seen that in this embodiment, a plurality of water flow grooves 17 are further provided on the positioning plate 9 so that water flows through the water flow grooves 17 to facilitate water transportation.

[0024] Specifically, by Figure 3 It can be seen that in this embodiment, the width of the positioning plate 9 is smaller than the inner diameter of the connecting pipe 4; reducing the size of the positioning plate 9 to a certain extent can facilitate the flow of water.

[0025] Specifically, by Figure 3 It can be seen that, in this embodiment, the length of the fixing rod 18 is consistent with the length of the guide rod 10 , which can prevent the fixing rod 18 from being separated from the positioning plate 9 , thereby facilitating the movement of the fixing rod 18 .

[0026] Working principle and use process of the utility model: In the utility model, a self-sealing zero-leakage instrument pipe fitting is provided. First, the pipeline can be connected to the pipe fitting body 1, and then the connecting pipe 4 is rotated clockwise so that the connecting pipe mouth 5 can be installed on the pipe fitting body 1, so that the pipe fitting body 1 can be sealed, and water flows from the pipeline into the interior of the pipe fitting body 1, and then the manual turntable 3 is rotated counterclockwise so that the connecting rod 8 drives the conical column 7 to move upward, so that water can flow into the interior of the connecting pipe 4 through the pipe fitting body 1. When water flows into the interior of the connecting pipe 4 through the pipe fitting body 1, the water will flush Hit the baffle 12 to move it toward the position of the positioning plate 9, and at the same time the baffle 12 will squeeze the reset spring 16 to shrink it. When the pipe body 1 needs to be sealed, the manual turntable 3 can be rotated clockwise to block the conical column 7 to stop the pipe body 1, and the water will stop flowing. At this time, the reset spring 16 will release its elastic force to push the baffle 12 to move and embed it into the avoidance groove 14, which can not only increase the sealing effect of the pipe body 1, but also prevent water backflow, so as to facilitate long-term use of the product. The product is not easy to age, thereby avoiding affecting the sealing effect of the pipe connection.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-sealing zero-leakage instrument pipe fitting, comprising a pipe fitting body (1) and a connecting pipe (4), characterized in that: A valve (2) is installed on the pipe body (1), a connecting rod (8) is installed in the valve (2) through a thread, a conical column (7) is installed at the bottom end of the connecting rod (8), and a manual turntable (3) is installed at the top end; Both ends of the connecting pipe (4) are provided with connecting pipe openings (5), and a first positioning ring (6) and a second positioning ring (15) are distributed and installed inside the two connecting pipe openings (5). A positioning plate (9) is also installed inside the connecting pipe (4), and a fixing plate (13) is installed at the rear end of the second positioning ring (15) in close contact with the inside of the connecting pipe (4). A guide rod (10) passes through the positioning plate (9), and a positioning piece (11) is installed at one end of the guide rod (10) and a baffle (12) is installed at the other end. An avoidance groove (14) for embedding the baffle (12) is provided on the fixing plate (13), and a reset spring (16) is sleeved on the outer wall of the guide rod (10), and the reset spring (16) is located between the positioning plate (9) and the baffle (12).

2. A self-sealing zero-leakage instrument fitting according to claim 1, characterized in that: A fixing rod (18) is installed at the rear end of the baffle (12), and the tail end of the fixing rod (18) passes through the positioning plate (9).

3. A self-sealing zero-leakage instrument pipe fitting according to claim 1, characterized in that: The diameter of the baffle (12) is greater than the inner diameter of the second positioning ring (15).

4. A self-sealing zero-leakage instrument pipe fitting according to claim 1, characterized in that: The positioning plate (9) is also provided with a plurality of water flow grooves (17).

5. A self-sealing zero-leakage instrument pipe fitting according to claim 1, characterized in that: The width of the positioning plate (9) is smaller than the inner diameter of the connecting pipe (4).

6. A self-sealing zero-leakage instrument pipe fitting according to claim 2, characterized in that: The length of the fixing rod (18) is consistent with the length of the guide rod (10).

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