Corrugated pipe connecting structure

Abstract

The utility model discloses a corrugated pipe connecting structure which comprises a connecting cylinder, the left side and the right side of the inner wall of the connecting cylinder are both communicated with connecting pipes, corrugated pipes are arranged on the surfaces of the connecting pipes in a sleeved mode, and the outer sides of the corrugated pipes penetrate to the left side and the right side of the connecting cylinder respectively. The inner wall of the connecting cylinder is slidably connected with four corrugated clamping blocks used in cooperation with the corrugated pipe, the outer sides of the corrugated clamping blocks are fixedly connected with connecting blocks, and the outer sides of the connecting blocks penetrate to the front side and the rear side of the connecting cylinder correspondingly. Firstly, the corrugated pipe is inserted into the connecting cylinder, meanwhile, the surface of the connecting pipe is sleeved with the corrugated pipe, then the corrugated pipe is sealed through the sealing ring, the grip is pulled outwards, the grip drives the circular ring to move outwards, the elastic hook plate is clamped into the clamping groove, and meanwhile the corrugated clamping block makes contact with the corrugated pipe; and at the moment, the corrugated pipes can be connected with one another, so that the effect of convenient connection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of corrugated pipes, in particular to a corrugated pipe connection structure. Background Art

[0002] Bellows refers to a tubular elastic sensitive element connected by foldable corrugated sheets along the folding and stretching direction. Bellows are widely used in instruments and meters. Their main purpose is to be used as a measuring element for pressure measuring instruments to convert pressure into displacement or force. The bellows has a thinner wall and higher sensitivity. The measuring range is from tens of Pa to tens of MPa. Its open end is fixed, and the sealed end is in a free state. It uses an auxiliary spiral spring or reed to increase its elasticity. When working, it stretches along the length of the tube under the action of internal pressure, causing the movable end to produce a displacement that is related to the pressure. The movable end drives the pointer to directly indicate the pressure. Bellows are often combined with displacement sensors to form pressure sensors that output electrical quantities. They are sometimes also used as isolation elements. Since the extension of the bellows requires a larger volume change, its response speed is lower than that of the Bourdon tube. Bellows are suitable for measuring low pressures.

[0003] According to the patent number CN210424093U published on the China Patent Network, the patent name is a bellows connection structure, through which the sealing between the bellows and the header can be ensured, and it is convenient for connection with the pipeline, including a header shell, a bellows, a sleeve, a sealing ring 1, a sealing ring 2 and a conversion joint, the header shell is provided with a mounting hole, a sleeve is welded and fixed in the mounting hole, the bellows is inserted in the sleeve, and the outer end of the bellows extends out of the sleeve, and there is a horizontal outward on the outer end surface of the bellows An unfolded annular retaining edge, a groove for the sealing ring to be nested is formed between the annular retaining edge and the outer end surface of the sleeve, an external thread is provided on the outer wall of the sleeve, and the connecting end of the conversion joint is provided with an internal thread that can match the external thread, and a protruding annular step is provided on the inner wall of the conversion joint, and a sealing ring 2 is provided between the annular retaining edge and the step. However, this connection structure is not convenient for connection. At present, corrugated pipes are mostly connected to each other by bolts. When using the bolts, auxiliary tools are required, and they cannot be connected and fixed by hand, resulting in reduced connection and fixing efficiency.

[0004] Therefore, it is necessary to redesign the connection structure so that it can be connected and fixed by hand. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a bellows connection structure, which has the advantage of being easy to connect and solves the problem that the connection structure is inconvenient to connect. At present, bellows are mostly connected to each other by bolts. When using the bolts, auxiliary tools are required and they cannot be connected and fixed by hand, resulting in reduced connection and fixing efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bellows connection structure, comprising a connecting tube, the left and right sides of the inner wall of the connecting tube are connected with connecting tubes, the surface of the connecting tube is provided with a bellows, the outer sides of the bellows respectively penetrate the left and right sides of the connecting tube, the inner wall of the connecting tube is slidably connected with a corrugated card block used in conjunction with the bellows, the number of the corrugated card blocks is four, the outer side of the corrugated card block is fixedly connected with a connecting block, the outer sides of the connecting block respectively penetrate the front side and the rear side of the connecting tube, the surface of the connecting tube A circular ring is sleeved for use with a connecting block, and a clamping groove is provided on the front and rear sides of the circular ring. The front and rear sides of the connecting tube and the outer side of the circular ring are fixedly connected to limiting blocks, and the inner side of the limiting block is fixedly connected to an elastic hook plate used in cooperation with the clamping groove. A movable ring is sleeved on the surface of the connecting tube and located on the inner side of the bellows, and a sealing ring used in cooperation with the bellows is fixedly connected to the outer side of the movable ring, and a T-shaped rod is fixedly connected to the inner side of the movable ring. The surface of the T-shaped rod is slidably connected to the inner wall of the connecting tube, and the inner side of the T-shaped rod is fixedly connected to a spring.

[0007] As a preferred embodiment of the present invention, a movable block is fixedly connected to the outer side of the T-shaped rod, and the outer side of the movable block penetrates to the front side and the rear side of the connecting tube respectively.

[0008] As a preferred embodiment of the present invention, the top and the bottom of the circular ring are fixedly connected with a handle, and the shape of the handle is U-shaped.

[0009] As a preferred embodiment of the present invention, the surface of the handle is provided with anti-slip patterns, and the shape of the anti-slip patterns is rhombus.

[0010] As a preferred embodiment of the present invention, a filter screen is fixedly connected to the inner wall of the connecting cylinder, and the filter screen is circular in shape.

[0011] As a preferred embodiment of the present invention, the material of the spring is stainless steel, and the shape of the spring is spiral.

[0012] As a preferred embodiment of the present invention, the connecting tube is made of aluminum alloy and has a cylindrical shape.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model first inserts the bellows into the connecting tube, and at the same time, the bellows is sleeved on the surface of the connecting tube, and then the bellows is sealed with a sealing ring. Next, the handle is pulled outward, and the handle drives the ring to move outward, so that the elastic hook plate is inserted into the card groove, and at the same time, the corrugated card block is in contact with the bellows. At this time, the bellows can be connected to each other, so as to achieve the effect of easy connection.

[0015] 2. The utility model can increase the contact area between the user's hands and the T-shaped bar by providing the movable block, making it convenient for the user to move the T-shaped bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the connecting tube structure of the utility model;

[0017] Figure 2 This is a front cross-sectional view of the connecting tube structure of the utility model;

[0018] Figure 3 This is a three-dimensional diagram of the circular ring structure of the utility model;

[0019] Figure 4 This is a three-dimensional diagram of the corrugated card block structure of the utility model.

[0020] In the figure: 1. connecting cylinder; 2. connecting pipe; 3. bellows; 4. corrugated clamping block; 5. connecting block; 6. circular ring; 7. clamping groove; 8. limiting block; 9. elastic hook plate; 10. movable ring; 11. sealing ring; 12. T-shaped rod; 13. spring; 14. movable block; 15. handle; 16. anti-slip pattern; 17. filter net. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figures 1 to 4As shown, the utility model provides a bellows connection structure, including a connection tube 1, the left and right sides of the inner wall of the connection tube 1 are connected with a connection tube 2, the surface of the connection tube 2 is sleeved with a bellows 3, the outer sides of the bellows 3 respectively penetrate the left and right sides of the connection tube 1, the inner wall of the connection tube 1 is slidably connected with a corrugated card block 4 used in conjunction with the bellows 3, the number of the corrugated card blocks 4 is four, the outer sides of the corrugated card blocks 4 are fixedly connected with a connection block 5, the outer sides of the connection block 5 respectively penetrate the front and rear sides of the connection tube 1, and the surface of the connection tube 1 is sleeved with a connection block 5 used in conjunction with the connection block 5 A circular ring 6 is provided with a card slot 7 on the front and rear sides of the circular ring 6. A limiting block 8 is fixedly connected to the front and rear sides of the connecting tube 1 and located on the outer side of the circular ring 6. An elastic hook plate 9 used in conjunction with the card slot 7 is fixedly connected to the inner side of the limiting block 8. A movable ring 10 is sleeved on the surface of the connecting tube 2 and located on the inner side of the bellows 3. A sealing ring 11 used in conjunction with the bellows 3 is fixedly connected to the outer side of the movable ring 10. A T-shaped rod 12 is fixedly connected to the inner side of the movable ring 10. The surface of the T-shaped rod 12 is slidably connected to the inner wall of the connecting tube 1, and a spring 13 is fixedly connected to the inner side of the T-shaped rod 12.

[0023] refer to Figure 2 The outer side of the T-shaped rod 12 is fixedly connected with a movable block 14, and the outer side of the movable block 14 penetrates to the front side and the rear side of the connecting tube 1 respectively.

[0024] As a technical optimization solution of the present invention, by providing the movable block 14 , the contact area between the user's hands and the T-shaped bar 12 can be increased, making it easier for the user to move the T-shaped bar 12 .

[0025] refer to Figure 3 The top and bottom of the ring 6 are fixedly connected with a handle 15, and the shape of the handle 15 is U-shaped.

[0026] As a technical optimization solution of the present invention, by providing the handle 15 , the contact area between the user's hands and the ring 6 can be increased, making it easier for the user to move the ring 6 .

[0027] refer to Figure 3 The surface of the handle 15 is provided with anti-skid patterns 16, and the shape of the anti-skid patterns 16 is rhombus.

[0028] As a technical optimization solution of the present invention, by providing the anti-slip grooves 16, the friction between the user's hands and the handle 15 can be increased to prevent the handle 15 from slipping out of the user's hands during use.

[0029] refer to Figure 2 A filter screen 17 is fixedly connected to the inner wall of the connecting cylinder 1, and the shape of the filter screen 17 is circular.

[0030] As a technical optimization solution of the present invention, by providing a filter 17, foreign matter in the liquid can be filtered, which is convenient for users.

[0031] refer to Figure 2 The material of the spring 13 is stainless steel, and the shape of the spring 13 is spiral.

[0032] As a technical optimization solution of the present invention, by providing the spring 13 made of stainless steel, it is possible to prevent the spring 13 from rusting and prevent the spring 13 from being damaged due to rust.

[0033] refer to Figure 1 The material of the connecting tube 1 is aluminum alloy, and the shape of the connecting tube 1 is cylindrical.

[0034] As a technical optimization solution of the present invention, by providing a connecting tube 1 made of aluminum alloy, the strength of the connecting tube 1 can be increased, making the connecting tube 1 less prone to damage.

[0035] When the sealing ring 11 is used as the sealing ring 12, the sealing ring 11 is used to seal the bellows 3. Next, the handle 15 is pulled outward, and the handle 15 drives the circular ring 6 to move outward. The circular ring 6 squeezes the elastic hook plate 9 outward to deform it. When the elastic hook plate 9 is aligned with the card groove 7 on the circular ring 6, the elastic hook plate 9 rebounds and resets, so that the elastic hook plate 9 is stuck in the card groove 7. At the same time, the circular ring 6 squeezes the connecting block 5 inward to move it inward, and the connecting block 5 drives the corrugated card block 4 to move inward, so that the corrugated card block 4 contacts the bellows 3. At this time, the bellows 3 can be connected to each other, thereby achieving the effect of easy connection.

[0036] To sum up: the bellows connection structure, by arranging a connecting tube 1, a connecting tube 2, a bellows 3, a corrugated clamping block 4, a connecting block 5, a circular ring 6, a clamping groove 7, a limit block 8, an elastic hook plate 9, a movable ring 10, a sealing ring 11, a T-shaped rod 12, and a spring 13, solves the problem that the connection structure is inconvenient to connect. At present, the bellows 3 are mostly connected to each other by bolts. When using the bolts, auxiliary tools are required, and they cannot be connected and fixed by hand, resulting in a reduced connection and fixing efficiency.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bellows connection structure, comprising a connection tube (1), characterized in that: The left and right sides of the inner wall of the connecting tube (1) are both connected to the connecting tube (2); the surface of the connecting tube (2) is provided with a bellows (3); the outer sides of the bellows (3) respectively penetrate the left and right sides of the connecting tube (1); the inner wall of the connecting tube (1) is slidably connected with a corrugated clamping block (4) used in conjunction with the bellows (3); the number of the corrugated clamping blocks (4) is four; the outer sides of the corrugated clamping blocks (4) are fixedly connected with a connecting block (5); the outer sides of the connecting block (5) respectively penetrate the front side and the rear side of the connecting tube (1); the surface of the connecting tube (1) is provided with a circular ring (6) used in conjunction with the connecting block (5); the front and rear sides of the circular ring (6) are A clamping groove (7) is provided on both sides of the connecting tube (1). A limiting block (8) is fixedly connected to the front and rear sides of the connecting tube (1) and is located on the outside of the circular ring (6). An elastic hook plate (9) used in conjunction with the clamping groove (7) is fixedly connected to the inside of the limiting block (8). A movable ring (10) is sleeved on the surface of the connecting tube (2) and is located on the inside of the corrugated tube (3). A sealing ring (11) used in conjunction with the corrugated tube (3) is fixedly connected to the outside of the movable ring (10). A T-shaped rod (12) is fixedly connected to the inside of the movable ring (10). The surface of the T-shaped rod (12) is slidably connected to the inner wall of the connecting tube (1). A spring (13) is fixedly connected to the inside of the T-shaped rod (12).

2. A bellows connection structure according to claim 1, characterized in that: The outer side of the T-shaped rod (12) is fixedly connected to a movable block (14), and the outer side of the movable block (14) respectively penetrates the front side and the rear side of the connecting tube (1).

3. The bellows connection structure according to claim 1, characterized in that: The top and bottom of the circular ring (6) are both fixedly connected with a handle (15), and the shape of the handle (15) is U-shaped.

4. A bellows connection structure according to claim 3, characterized in that: The surface of the handle (15) is provided with anti-skid patterns (16), and the shape of the anti-skid patterns (16) is rhombus.

5. The bellows connection structure according to claim 1, characterized in that: A filter screen (17) is fixedly connected to the inner wall of the connecting cylinder (1), and the filter screen (17) is circular in shape.

6. The bellows connection structure according to claim 1, characterized in that: The material of the spring (13) is stainless steel, and the shape of the spring (13) is spiral.

7. The bellows connection structure according to claim 1, characterized in that: The connecting tube (1) is made of aluminum alloy and is cylindrical in shape.

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