Combined PVC (polyvinyl chloride) pipe with different pipe diameters

Abstract

The utility model discloses a combined PVC pipe with different pipe diameters, which comprises a large-diameter PVC pipe body and a small-diameter PVC pipe body, the outer side wall of the large-diameter PVC pipe body and the outer side wall of the small-diameter PVC pipe body are respectively provided with a plurality of first clamping blocks and second clamping blocks at equal intervals, and the inner wall and the outer wall of one end of the large-diameter PVC pipe body are respectively provided with a first inner connecting ring and a first outer connecting ring. The surface of the first outer connecting ring is provided with a first L-shaped clamping groove connected with a first clamping block in a limiting and clamping mode, the inner wall and the outer wall of one end of the small-diameter PVC pipe body are provided with a second inner connecting ring and a second outer connecting ring respectively, and the surface of the second outer connecting ring is provided with a second L-shaped clamping groove connected with a second clamping block in a limiting and clamping mode. When the structure is used, connection between the large-diameter PVC pipe body and the small-diameter PVC pipe body can be completed only by rotating the first outer connecting ring and the second outer connecting ring which are fixedly connected together through the first bottom ring and the second bottom ring, connection and installation are rapid, labor is saved, convenience is achieved, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of PVC pipes, in particular to a combined PVC pipe with different pipe diameters. Background Art

[0002] PVC pipe is a plastic pipe made of polyvinyl chloride resin, stabilizer, lubricant, etc., which is extruded by hot pressing. It is mainly used for the transportation of drainage, wastewater, chemicals, heating liquid and cooling liquid, food, ultra-pure liquid, mud, gas, and compressed air. The connection process of PVC pipes often involves the connection between PVC pipes of different diameters;

[0003] For example, a different-diameter combined PVC pipe disclosed in the utility model with authorization announcement number CN217056780U comprises a large-diameter PVC pipe, a small-diameter PVC pipe and a joint, the joint comprises a small-tube connector and a large-tube connector, the small-tube connector comprises a connecting tube and a connecting flange, the large-tube connector is coaxially provided with an outer tube, a middle tube, an elastic tube and an inner tube in sequence, one side of the middle tube is connected to the outer tube through a first side plate, and the other side of the middle tube is connected to the inner tube through a second side plate, the outer tube, the first side plate and the middle tube cooperate to form a first groove for accommodating the large-diameter PVC pipe, the elastic tube is connected to a side of the second side plate close to the first side plate, the elastic tube, the second side plate and the inner tube cooperate to form a second groove for accommodating the small-diameter PVC pipe, the elastic tube, the second side plate and the middle tube cooperate to form a third groove for accommodating the connecting tube, the connecting tube is arranged in the third groove and is interference-fitted with the elastic tube, the connection operation is convenient, the force on the connected PVC pipe is uniform, and the service life of the PVC pipe is effectively extended.

[0004] Since both the large-diameter PVC pipe and the small-diameter PVC pipe are connected by threading to achieve the joint connection between the two, whether the large-diameter PVC pipe is connected to the joint or the small-diameter PVC pipe is connected to the joint first, the remaining large-diameter PVC pipe or small-diameter PVC pipe needs to be rotated to complete the connection between the large-diameter PVC pipe and the small-diameter PVC pipe. At this time, if the large-diameter PVC pipe or the small-diameter PVC pipe is shorter and smaller in size, it is relatively convenient to screw and rotate the connection. However, if it is long and bulky, it will be more laborious to rotate the large-diameter PVC pipe or the small-diameter PVC pipe, so it will be more difficult for the entire connection structure to fix the large-diameter PVC pipe and the small-diameter PVC pipe. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a different-diameter combined PVC pipe, which can solve the technical problem that when the large-diameter PVC pipe or the small-diameter PVC pipe is overall long and bulky, it will be more laborious to rotate the large-diameter PVC pipe or the small-diameter PVC pipe, and then the entire connection structure will be more difficult to fix the large-diameter PVC pipe and the small-diameter PVC pipe.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a different-diameter combined PVC pipe, comprising a large-diameter PVC pipe body and a small-diameter PVC pipe body, the outer wall of the large-diameter PVC pipe body is provided with a plurality of first clamping blocks at equal distances, the outer wall of the small-diameter PVC pipe body is provided with a plurality of second clamping blocks at equal distances, the inner wall of one end of the large-diameter PVC pipe body is provided with a first inner connecting ring, the outer wall of one end of the large-diameter PVC pipe body is provided with a first outer connecting ring, the surface of the first outer connecting ring is provided with a plurality of first L-shaped clamping grooves which are fixedly connected to the outer wall of the large-diameter PVC pipe body and are limitedly engaged with the first clamping blocks, a first bottom ring is fixedly connected between the first outer connecting ring and the first inner connecting ring, a second inner connecting ring is provided on the inner wall of one end of the small-diameter PVC pipe body, a second outer connecting ring is provided on the outer wall of one end of the small-diameter PVC pipe body, the surface of the second outer connecting ring is provided with a plurality of second L-shaped clamping grooves which are limitedly engaged with the second clamping blocks provided on the outer wall of the small-diameter PVC pipe body, and a second bottom ring is fixedly connected between the second inner connecting ring and the second outer connecting ring.

[0007] As a preferred technical solution of the utility model, the first bottom ring and the second bottom ring are sealed and fixedly connected with each other between their opposite surfaces.

[0008] As a preferred technical solution of the utility model, a plurality of first extrusion springs are fixedly arranged on the surface of the first bottom ring and are equidistantly located between the first inner connecting ring and the first outer connecting ring, and first annular stoppers are fixedly arranged on the top ends of the plurality of first extrusion springs.

[0009] As a preferred technical solution of the utility model, a plurality of second extrusion springs are fixedly arranged on the surface of the second bottom ring and are located equidistantly between the second inner connecting ring and the second outer connecting ring, a second annular stopper is fixedly arranged on the top of the plurality of second extrusion springs, and one end of the second annular stopper and the end away from the second annular stopper are fixedly connected to the surface of the second bottom ring.

[0010] As a preferred technical solution of the present utility model, the cross sections of the first annular stopper and the second annular stopper are both in the shape of circular rings.

[0011] As a preferred technical solution of the utility model, sealing rings are fixedly provided on the surfaces of the first annular stopper and the second annular stopper and respectively close to the surfaces of one end of the large-diameter PVC pipe body and the small-diameter PVC pipe body.

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0013] By means of the engagement and cooperation between the first clamping block and the first L-shaped clamping groove provided on the side wall of the first outer connecting ring, a position-limiting fixed connection between the large-diameter PVC pipe body and the first outer connecting ring is realized; by means of the engagement and cooperation between the second clamping block and the second L-shaped clamping groove provided on the side wall of the second outer connecting ring, a position-limiting fixed connection between the small-diameter PVC pipe body and the second outer connecting ring is realized; by means of the fixed connection between the first bottom ring and the second bottom ring, the connection between the large-diameter PVC pipe body and the small-diameter PVC pipe body is realized; when in use, the structure only needs to rotate the first outer connecting ring and the second outer connecting ring that are fixedly connected together by the first bottom ring and the second bottom ring to complete the connection between the large-diameter PVC pipe body and the small-diameter PVC pipe body; the connection and installation are relatively fast, labor-saving and convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the sectional three-dimensional structure of the first external connecting ring of the utility model;

[0017] Figure 4 This is a schematic diagram of the cross-sectional three-dimensional structure of the second outer connecting ring of the utility model;

[0018] Wherein: 1. large diameter PVC pipe body; 2. small diameter PVC pipe body; 3. first clamping block; 4. second clamping block; 5. first bottom ring; 6. second bottom ring; 7. first inner connecting ring; 8. first outer connecting ring; 9. first extrusion spring; 10. first annular block; 11. first L-shaped slot; 12. second inner connecting ring; 13. second outer connecting ring; 14. second extrusion spring; 15. second annular block; 16. second L-shaped slot. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0020] Example

[0021] Please refer to Figure 1-4As shown, the utility model provides a different-diameter combined PVC pipe, wherein a plurality of first clamping blocks 3 and a second clamping block 4 are equidistantly arranged on the outer side walls of one end of a large-diameter PVC pipe body 1 and a small-diameter PVC pipe body 2, and then a first inner connecting ring 7 and a first outer connecting ring 8 are respectively arranged on the inner and outer side walls of one end of the large-diameter PVC pipe body 1 and close to the small-diameter PVC pipe body 2, and the first inner connecting ring 7 and the first outer connecting ring 8 are fixedly connected by a first bottom ring 5, and similarly, a first bottom ring 5 is arranged on the inner and outer side walls of one end of the large-diameter PVC pipe body 1 and close to the large-diameter PVC pipe body 2. A second inner connecting ring 12 and a second outer connecting ring 13 are respectively provided on the inner and outer side walls of one end of the C tube body 1, and then a second bottom ring 6 is fixedly connected between the second inner connecting ring 12 and the second outer connecting ring 13, and then the first bottom ring 5 and the second bottom ring 6 are fixedly connected between the opposite surfaces, and finally a plurality of first L-shaped card grooves 11 which are limitedly engaged with the first card block 3 are equidistantly provided on the surface of the first outer connecting ring 8, and a plurality of second L-shaped card grooves 16 which are limitedly engaged with the second card block 4 are equidistantly provided on the surface of the second outer connecting ring 13;

[0022] When connecting the large-diameter PVC pipe body 1 with the small-diameter PVC pipe body 2, first place the entire joint consisting of the first bottom ring 5, the first inner connecting ring 7, the first outer connecting ring 8, the second bottom ring 6, the second inner connecting ring 12, and the second outer connecting ring 13 between the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2, and then insert the large-diameter PVC pipe body 1 between the first inner connecting ring 7 and the first outer connecting ring 8. At the same time, align the first clamping block 3 set on the side wall of the large-diameter PVC pipe body 1 with the first L-shaped clamping groove 11, and then insert one end of the small-diameter PVC pipe body 2 into the second inner connecting ring 12. , and the second outer connecting ring 13, similarly align the second card block 4 set on the side wall of the small-diameter PVC pipe body 2 with the second L-shaped card slot 16, then push the large-diameter PVC pipe body 1 to push the first card block 3 to the bottom end of the first L-shaped card slot 11, then push the small-diameter PVC pipe body 2 to push the second card block 4 to the bottom end of the second L-shaped card slot 16, and then rotate the joint so that the first card block 3 is engaged at the end of the first L-shaped card slot 11, and at the same time, the second card block 4 is also engaged at the end of the second L-shaped card slot 16, thereby completing the connection between the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2;

[0023] As a further implementation of this embodiment, Figure 1-4As shown, a plurality of first extrusion springs 9 are arranged on the surface of the first bottom ring 5 and on the surface facing the large-diameter PVC pipe body 1, and the first extrusion spring 9 is arranged between the first inner connecting ring 7 and the first outer connecting ring 8, and the other end of the first extrusion spring 9 is fixedly connected with a first annular stopper 10, and a sealing ring is arranged on the upper surface of the first annular stopper 10, and the sealing ring can be increased by setting the sealing ring. The sealing performance of the connection between the large-diameter PVC pipe body 1 and the first annular stopper 10 can be increased, and a plurality of second extrusion springs 14 are arranged on the surface of the second bottom ring 6 and on the surface facing the small-diameter PVC pipe body 2, and the second extrusion spring 14 is arranged between the second inner connecting ring 12 and the second outer connecting ring 13, and the other end of the second extrusion spring 14 is fixedly connected with a second annular stopper 15, and similarly, a sealing ring is arranged on the upper surface of the second annular stopper 15, and the sealing performance of the connection between the small-diameter PVC pipe body 2 and the second annular stopper 15 can be increased by setting the sealing ring;

[0024] During connection, both the first extrusion spring 9 and the second extrusion spring 14 will be squeezed, and then elastically deformed, generating elastic potential energy, which will act on the first annular stopper 10 and the second annular stopper 15. At this time, the first annular stopper 10 will be squeezed toward one end of the large-diameter PVC pipe body 1, reducing the gap between the first annular stopper 10 and the large-diameter PVC pipe body 1, while pushing the large-diameter PVC pipe body 1, so that the first clamping block 3 on the side wall of the large-diameter PVC pipe body 1 can be tightly clamped in the first L-shaped clamping groove 11, and the working principle of the second extrusion spring 14 is similar to that of the first annular stopper 10, which can also increase the stability of the connection between the small-diameter PVC pipe body 2 and the second outer connecting ring 13 and reduce the gap at the connection with the second annular stopper 15;

[0025] Specific working principle:

[0026] When connecting the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2, first place the joint between the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2, then insert the large-diameter PVC pipe body 1 between the first inner connecting ring 7 and the first outer connecting ring 8, and insert one end of the small-diameter PVC pipe body 2 between the second inner connecting ring 12 and the second outer connecting ring 13. At the same time, align the first card block 3 set on the side wall of the large-diameter PVC pipe body 1 with the first L-shaped card groove 11, and similarly align the second card block 4 set on the side wall of the small-diameter PVC pipe body 2 with the second L-shaped card groove 16, then push the large-diameter PVC pipe body 1 to push the first card block 3 to the bottom end of the first L-shaped card groove 11, then push the small-diameter PVC pipe body 2 to push the second card block 4 to the bottom end of the second L-shaped card groove 16, and then rotate the joint so that the first card block 3 is engaged at the end of the first L-shaped card groove 11, and at the same time, the second card block 4 is engaged with the end of the first L-shaped card groove 11. It is also engaged at the end of the second L-shaped slot 16, thereby completing the connection between the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2. When the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2 are limitedly connected between the first inner connecting ring 7, the first outer connecting ring 8 and the second inner connecting ring 12 and the second outer connecting ring 13, the first extrusion spring 9 and the second extrusion spring 14 will be squeezed, and then elastically deformed to generate elastic potential energy, which will act on the first annular stopper 10 and the second annular stopper 15, so that the first annular stopper 10 and the second annular stopper 15 squeeze the large-diameter PVC pipe body 1 and the small-diameter PVC pipe body 2 respectively, thereby reducing the gap between the first annular stopper 10 and the large-diameter PVC pipe body 1 and the gap between the second annular stopper 15 and the small-diameter PVC pipe body 2, while increasing the stability of the connection of the entire device.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A combined PVC pipe with different diameters, comprising a large-diameter PVC pipe body (1) and a small-diameter PVC pipe body (2), characterized in that: The outer wall of the large-diameter PVC pipe body (1) is provided with a plurality of first clamping blocks (3) at equal distances, and the outer wall of the small-diameter PVC pipe body (2) is provided with a plurality of second clamping blocks (4) at equal distances. The inner wall of one end of the large-diameter PVC pipe body (1) is provided with a first inner connecting ring (7), and the outer wall of one end of the large-diameter PVC pipe body (1) is provided with a first outer connecting ring (8). The surface of the first outer connecting ring (8) is provided with a plurality of first L-shaped clamping grooves (11) which are fixedly connected to the outer wall of the large-diameter PVC pipe body (1) and are limitedly engaged with the first clamping blocks (3). A first bottom ring (5) is fixedly connected between the outer connecting ring (8) and the first inner connecting ring (7); a second inner connecting ring (12) is provided on the inner wall of one end of the small-diameter PVC pipe body (2); a second outer connecting ring (13) is provided on the outer wall of one end of the small-diameter PVC pipe body (2); a plurality of second L-shaped grooves (16) are provided on the surface of the second outer connecting ring (13) and are limitedly engaged with second clamping blocks (4) provided on the outer wall of the small-diameter PVC pipe body (2); and a second bottom ring (6) is fixedly connected between the second inner connecting ring (12) and the second outer connecting ring (13).

2. The different-diameter combined PVC pipe according to claim 1, characterized in that: The first bottom ring (5) and the second bottom ring (6) are sealed and fixedly connected between their opposing surfaces.

3. The different-diameter combined PVC pipe according to claim 1, characterized in that: A plurality of first extrusion springs (9) are fixedly arranged on the surface of the first bottom ring (5) and are located between the first inner connecting ring (7) and the first outer connecting ring (8) at equal distances, and first annular stoppers (10) are fixedly arranged on the top ends of the plurality of first extrusion springs (9).

4. The different-diameter combined PVC pipe according to claim 1, characterized in that: A plurality of second extrusion springs (14) are fixedly arranged on the surface of the second bottom ring (6) and are located between the second inner connecting ring (12) and the second outer connecting ring (13) at equal distances; a second annular stopper (15) is fixedly arranged on the top of the plurality of second extrusion springs (14); and one end of the second annular stopper (15) and the end away from the second annular stopper (15) are fixedly connected to the surface of the second bottom ring (6).

5. The different-diameter combined PVC pipe according to claim 3, characterized in that: The first annular stopper (10) and the second annular stopper (15) both have circular cross-sections.

6. The different-diameter combined PVC pipe according to claim 3, characterized in that: Sealing rings are fixedly provided on the surfaces of the first annular stopper (10) and the second annular stopper (15) and are respectively close to the surfaces of one end of the large-diameter PVC pipe body (1) and the small-diameter PVC pipe body (2).

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