Polytetrafluoroethylene pipe convenient to weld and connect

Abstract

The utility model relates to the technical field of polytetrafluoroethylene pipe welding, in particular to a polytetrafluoroethylene pipe convenient for welding connection, which comprises a pipe body, one end of the pipe body is provided with a plurality of guide connection columns which are uniformly distributed in a surrounding manner, and the other end of the pipe body is provided with guide connection grooves which are in one-to-one correspondence with the guide connection columns. Locking grooves are formed in the two inner side walls of the guide connection groove, locking plates with one ends extending into the guide connection groove are arranged in the locking grooves in a sliding mode, advancing grooves communicating with the locking grooves are formed in the pipe body, and limiting plates connected with the locking plates are arranged in the advancing grooves; sliding rods with the two ends connected with the inner side wall of the advancing groove are symmetrically arranged on the two sides of the limiting plate in a sliding mode. According to the utility model, the two pipe bodies can be butted and mounted during welding, so that the two pipe bodies are prevented from shifting in the welding process, and the welding connection stability of the two pipe bodies is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the welding technology field of polytetrafluoroethylene pipe, specifically to a kind of polytetrafluoroethylene pipe of convenient welding connection. BACKGROUND

[0002] People usually use various pipe materials to transport liquid, and polytetrafluoroethylene pipe is made of high-quality plunger extruded pipe. By using special processing technology, steel pipe and plastic pipe are tightly combined, which has reliable and excellent corrosion resistance and can transport high-temperature strong corrosive gas and liquid.

[0003] In the power generation and chemical industry, there are a large number of low-temperature acid flue gas waste heat emissions, most of which use polytetrafluoroethylene pipe. When the length of the polytetrafluoroethylene pipe is not enough, it is usually necessary to increase the length of the polytetrafluoroethylene pipe by welding. When the existing polytetrafluoroethylene pipe is welded, it is usually necessary to manually align the joint of the polytetrafluoroethylene pipe. When manual alignment is performed, most of the time, the alignment will be offset, resulting in a failed weld, a risk of leakage, and affecting the normal use of the pipe. SUMMARY

[0004] The utility model aims at the defects of the prior art and provides a kind of polytetrafluoroethylene pipe for convenient welding connection to solve the problem that the existing polytetrafluoroethylene pipe usually needs manual joint alignment when welded, and most of the time, the alignment will be offset, resulting in a failed weld, a risk of leakage, and affecting the normal use of the pipe.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of polytetrafluoroethylene pipe for convenient welding connection, comprising a pipe body, the pipe body one end is equipped with a plurality of evenly encircling distribution guide posts, the other end of pipe body is equipped with guide slot corresponding to guide post, the guide slot two inner side wall is equipped with locking slot, the locking slot is slidably equipped with locking plate, one end of which extends into the guide slot, a travel groove is formed in the pipe body and is in communication with the locking slot, the travel groove is equipped with a limiting plate connected to the locking plate, and the limiting plate is symmetrically slidably equipped with two slide rods with both ends connected to the inner side wall of the travel groove.

[0007] As a preferred technical solution of the utility model, the front end of the guide post is provided with a lead-in end for inserting between the two locking plates in the guide slot, and the lead-in end is in triangular or trapezoidal structure.

[0008] Through the above technical solution, the lead-in end is provided to facilitate the insertion of the guide post between the two locking plates in the guide slot.

[0009] As a preferred technical scheme of the utility model, one end of the locking plate away from the limiting plate is provided with an auxiliary lead-in end matched with the lead-in end.

[0010] Through the above technical scheme, the auxiliary lead-in end is matched with the lead-in end, thereby further improving the convenience of inserting the lead-in column between the two locking plates of the lead-in groove.

[0011] As a preferred technical scheme of the utility model, the coaxial sleeve outside the sliding rod is provided with an extrusion spring, one end of the extrusion spring is connected with the limiting plate, and the other end of the extrusion spring is connected with the inner wall of the advancing groove.

[0012] Through the above technical scheme, the elastic force generated by the extrusion spring is utilized, thereby improving the stability of inserting the locking plate into the locking groove.

[0013] As a preferred technical scheme of the utility model, the lead-in column is symmetrically provided with a locking groove on both sides for inserting the locking plate.

[0014] Through the above technical scheme, the locking groove and the locking plate are arranged, thereby avoiding the lead-in column from separating from the lead-in groove, and the lead-in column inserted into the lead-in groove can be fixed.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] When welding the two pipe bodies, first, the lead-in column on one pipe body is aligned with the lead-in groove in the other pipe body for insertion, in the process of inserting the lead-in column into the lead-in groove, the lead-in end on the lead-in column is in contact with the auxiliary lead-in end on the two locking plates, so that the two locking plates are relatively displaced, and the extrusion spring is stressed and extruded, when the lead-in column is inserted into the bottom of the lead-in groove, the extrusion spring restores the deformation to drive the displacement of the locking plate, so that the locking plate is inserted into the locking groove of the lead-in column, that is, the connection of the two pipe bodies is completed, so as to facilitate the welding connection of the two pipe bodies by the staff. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural schematic view of the utility model;

[0018] Fig. 2 It is a sectional view of the utility model;

[0019] Fig. 3 It is a connection relationship diagram of the locking plate, the auxiliary lead-in end, the sliding rod and the extrusion spring of the utility model;

[0020] In the diagram: 1. Tube body; 2. Guide post; 3. Guide groove; 4. Locking groove; 5. Inlet end; 6. Traveling groove; 7. Compression spring; 8. Locking plate; 9. Slide rod; 10. Limiting plate; 11. Auxiliary inlet end. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Example

[0024] This utility model provides a polytetrafluoroethylene pipe that is easy to weld and connect. (Reference) Figs. 1-3 As shown, the device includes a tube body 1. One end of the tube body 1 is provided with a plurality of evenly distributed guide posts 2. The other end of the tube body 1 is provided with guide grooves 3 corresponding to the guide posts 2. The guide grooves 3 fit into the guide posts 2. Locking grooves 4 are provided on both inner sidewalls of the guide grooves 3 and communicate with them. A locking plate 8 is slidably provided in the locking groove 4, with one end extending into the guide groove 3. A travel groove 6 is provided in the tube body 1 and communicates with the locking groove 4. A limiting plate 10 is provided in the travel groove 6 and is connected to the locking plate 8. The limiting plate 10 and the locking plate 8 are integrally formed. Sliding rods 9 are symmetrically slidably provided on both sides of the limiting plate 10 and connected to the inner sidewalls of the travel groove 6 at both ends.

[0025] The slide bar 9 is coaxially fitted with a compression spring 7. One end of the compression spring 7 is connected to the limiting plate 10, and the other end of the compression spring 7 is connected to the inner wall of the travel groove 6. The elastic force generated by the compression spring 7 improves the stability of the locking plate 8 when it is inserted into the locking groove 4.

[0026] The guide post 2 is provided with locking grooves 4 on both sides for the locking plate 8 to be inserted. The locking grooves 4 and the locking plate 8 are provided to prevent the guide post 2 from detaching from the guide groove 3 and to limit and fix the guide post 2 when it is inserted into the guide groove 3.

[0027] Further, the guide column 2 is provided with a guide end 5 between the two locking plates 8 in the guide slot 3, the guide end 5 is triangular or trapezoidal, the guide end 5 is convenient for the guide column 2 to be inserted into the guide slot 3.

[0028] Further, the locking plate 8 is provided with an auxiliary guide end 11 away from the limiting plate 10, the auxiliary guide end 11 is triangular or trapezoidal, the auxiliary guide end 11 and the guide end 5 are matched, thereby further improving the convenience of the guide column 2 being inserted into the two locking plates 8 in the guide slot 3.

[0029] The working principle of the utility model is:

[0030] When the two pipe bodies 1 are welded, the guide column 2 on one pipe body 1 is aligned with the guide slot 3 in the other pipe body 1 and inserted, in the process of the guide column 2 being inserted into the guide slot 3, the guide end 5 on the guide column 2 is in contact with the auxiliary guide end 11 on the two locking plates 8, the two locking plates 8 are relatively displaced, and the compression spring 7 is compressed, when the guide column 2 is inserted into the bottom of the guide slot 3, the compression spring 7 is deformed and drives the locking plate 8 to be displaced, the locking plate 8 is inserted into the locking slot 4 of the guide column 2, and the connection of the two pipe bodies 1 is completed, so that the two pipe bodies 1 are welded and connected. The utility model can butt joint the two pipe bodies 1 during welding, avoids the displacement of the two pipe bodies 1 during welding, and improves the stability of the welding connection of the two pipe bodies 1.

[0031] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] The above described embodiments only express several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the utility model patent. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A polytetrafluoroethylene pipe that is easy to weld, comprising a pipe body (1), characterized in that: One end of the tube (1) is provided with a plurality of evenly distributed guide posts (2), and the other end of the tube (1) is provided with guide grooves (3) corresponding to the guide posts (2). Locking grooves are provided on both inner walls of the guide grooves (3). A locking plate (8) with one end extending into the guide groove (3) is slidably provided in the locking groove. A traveling groove (6) communicating with the locking groove is provided in the tube (1). A limiting plate (10) connected to the locking plate (8) is provided in the traveling groove (6). Sliding rods (9) with both ends connected to the inner walls of the traveling groove (6) are symmetrically slidably provided on both sides of the limiting plate (10).

2. The polytetrafluoroethylene pipe for easy welding connection according to claim 1, characterized in that: The front end of the guide post (2) is provided with an inlet end (5) for insertion into the guide groove (3) between the two locking plates (8). The inlet end (5) has a triangular or trapezoidal structure.

3. The polytetrafluoroethylene pipe for easy welding connection according to claim 2, characterized in that: The locking plate (8) is provided with an auxiliary inlet end (11) at the end away from the limiting plate (10) for use with the inlet end (5).

4. The polytetrafluoroethylene pipe for easy welding connection according to claim 1, characterized in that: A compression spring (7) is coaxially sleeved on the outside of the slide bar (9). One end of the compression spring (7) is connected to the limiting plate (10), and the other end of the compression spring (7) is connected to the inner wall of the travel groove (6).

5. A polytetrafluoroethylene pipe for easy welding connection according to claim 1, characterized in that: The guide post (2) has symmetrical locking grooves (4) on both sides for the locking plate (8) to be inserted.

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