Pipe end sealing clamp

Abstract

The utility model relates to a pipe fitting end sealing clamp which comprises an end sealing main body and an intercalation assembly which are connected with each other, the end sealing main body comprises a first face and a second face which are opposite to each other, the first face of the end sealing main body and the second face of the end sealing main body are both closed figures with non-hollow interiors, and the intercalation assembly comprises a first end face and a second end face which are opposite to each other. The first end face of the intercalation assembly is connected to the second face of the end sealing body. The area of the second end face of the intercalation assembly is smaller than that of the first end face of the intercalation assembly, and the first projection of the first end face of the intercalation assembly on the second face of the end sealing body is in the second face of the end sealing body. And the second projection of the second end surface of the intercalation assembly on the second surface of the end sealing main body is in the peripheral contour of the second end surface of the intercalation assembly. The pipe end sealing clamp is suitable for end face sealing in the double-layer pipe vacuum glue injection process, effectively prevents leakage of air and glue in the glue injection process, and is simple in structure and convenient to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting processing technical field, especially a pipe fitting end sealing fixture. BACKGROUND

[0002] In modern industrial manufacturing, double-layer pipe fittings are widely used in occasions requiring high sealing, pressure resistance and corrosion resistance due to their unique double-layer structure design. In order to achieve the close combination between layers, it is usually necessary to inject a specific sealant into the gap between the two layers of the pipe.

[0003] At present, the glue injection methods of double-layer pipe fittings mainly include the following:

[0004] Direct injection method: this method directly injects sealant into the gap layer of double-layer pipe fittings through the reserved injection port. However, this method cannot guarantee the uniform distribution of sealant between the two layers of pipe, especially in the case of long or curved pipe, which is prone to uneven injection, bubble residue and other problems, affecting the sealing effect.

[0005] Mechanical clamp assisted injection: in order to strengthen the sealing of the end, some technologies use mechanical clamps to clamp the end of double-layer pipe fittings. However, the existing mechanical clamps are often complex in structure, cumbersome to operate, and difficult to accurately control the gap between the two layers of pipe, which may still cause uneven gap and poor sealing during the injection process.

[0006] Vacuum injection method: first, the gap layer of double-layer pipe fittings is subjected to vacuum treatment before injection to exclude air and moisture. Then, the sealant is injected under negative pressure. Although this method can significantly improve the injection quality, it has high requirements for the sealing of the end of double-layer pipe fittings. If the end is not tightly sealed, air will re-enter the gap layer of double-layer pipe fittings, destroying the vacuum state and affecting the injection effect. Moreover, during the vacuum process, the thickness of the gap layer between the pipe fittings is difficult to control for double-layer pipe fittings with plastic outer layer, resulting in uneven injection.

[0007] Therefore, it is necessary to develop a new type of pipe fitting end sealing clamp to realize reliable injection of double-layer pipe fittings and improve the injection quality. UTILITY MODEL CONTENTS

[0008] The main purpose of the utility model is to provide a pipe fitting end sealing clamp to solve the problems of difficult effective sealing of the end of double-layer pipe fittings and further difficult control of the thickness of the gap layer of double-layer pipe fittings when injecting the gap layer of double-layer pipe fittings by the vacuum injection method in the prior art.

[0009] To achieve the above object, the utility model provides a pipe end sealing clamp, including mutually connected end sealing main part and interlayer component, the end sealing main part includes opposite first surface and second surface, the first surface of end sealing main part and the second surface of end sealing main part are all inside not hollow closed figure, the interlayer component includes opposite first end surface and second end surface, the first end surface of interlayer component is connected on the second surface of end sealing main part, the area of second end surface of interlayer component is less than the area of first end surface of interlayer component, the first projection of first end surface of interlayer component on the second surface of end sealing main part is all in the second surface of end sealing main part, and the second projection of second end surface of interlayer component on the second surface of end sealing main part is in the outer peripheral contour of second end surface of interlayer component.

[0010] Further, the second projection is in the first projection.

[0011] Further, the ratio of the area of the second end surface of the interlayer component to the area of the first end surface of the interlayer component ranges from 0.5 to 0.99.

[0012] Further, the first projection and the second projection have the same geometric center.

[0013] Further, the second end surface of the interlayer component is a circular ring shape, and the first end surface of the interlayer component is a circular ring shape.

[0014] Further, the width of the interlayer component ranges from 5 mm to 50 mm, and the width is the distance from the first end surface of the interlayer component to the second end surface of the interlayer component.

[0015] Further, the thickness of the end sealing main body ranges from 0.1 mm to 10 mm, and the thickness is the distance from the first surface of the end sealing main body to the second surface of the end sealing main body.

[0016] Further, the first surface of the end sealing main body is provided with a handle.

[0017] Further, the surface roughness of the interlayer component is not greater than 10 microns.

[0018] Further, the first surface of the end sealing main body is the same shape as the second surface of the end sealing main body, and the projection of the first surface of the end sealing main body on the second surface of the end sealing main body coincides with the second surface of the end sealing main body.

[0019] The pipe end sealing clamp provided by the utility model has the following beneficial effects:

[0020] The end of the double-layer pipe is tightly fitted with the end sealing body, which effectively prevents air and glue from leaking during the glue injection process; meanwhile, the second end face of the interlayer assembly is designed to have a smaller area than the first end face, so that the interlayer assembly can be accurately inserted between the two layers of the double-layer pipe to form a stable support structure, thereby accurately controlling the thickness of the gap layer between the two pipe layers, which is not only beneficial to the uniform distribution of the sealing glue, but also avoids the problems of uneven glue injection and poor sealing caused by too large or too small gap. Meanwhile, by inserting the interlayer assembly between the two layers of the double-layer pipe, the sealing effect of the pipe end sealing clamp on the end can be further improved to prevent air and glue from leaking during the glue injection process. The pipe end sealing clamp of the utility model can ensure uniform glue distribution and effective vacuum maintenance during the glue injection process, thereby improving the processing quality and reliability of the double-layer pipe. The structure is simple and convenient to operate, which greatly reduces the production cost and labor intensity. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure side view of the pipe end sealing clamp in an embodiment;

[0022] Figure 2 It is a structure front view of the pipe end sealing clamp in an embodiment;

[0023] Figure 3 It is Figure 2 It is a cross-sectional view of A-A in the embodiment;

[0024] Figure 4 It is a use schematic view of the pipe end sealing clamp in an embodiment;

[0025] Figure 5 It is a cross-sectional structure schematic view of the pipe end sealing clamp in an embodiment.

[0026] BRIEF DESCRIPTION OF DRAWINGS

[0027] 1: end sealing body; 101: first face of the end sealing body; 102: second face of the end sealing body; 103: handle;

[0028] 2: interlayer assembly; 201: first end face of the interlayer assembly; 202: second end face of the interlayer assembly;

[0029] 3: double-layer pipe.

[0030] The implementation, functional features and advantages of the utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for describing particular embodiments only and is not intended to be limiting of the application; the present application is well suited to carry out various embodiments as broadly described herein without resorting to use of more specific terminology. The above and further advantages of the present application will become apparent by reference to the following description taken in conjunction with the accompanying drawings, in which like numerals indicate like elements in the figures, and by practice of the methods thereof.

[0032] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0033] In order to make the technical personnel of the present technology better understand the application scheme, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings.

[0034] With reference to Figures 1-3 One embodiment of the present application discloses a pipe end sealing clamp, which comprises a sealing body 1 and an interlayer assembly 2 which are connected with each other, the sealing body 1 comprises opposite first and second faces, the first face 101 of the sealing body and the second face 102 of the sealing body are both closed figures without hollow interiors, the interlayer assembly 2 comprises opposite first and second end faces, the first end face 201 of the interlayer assembly is connected to the second face 102 of the sealing body, the area of the second end face 202 of the interlayer assembly is smaller than the area of the first end face 201 of the interlayer assembly, the first projection of the first end face 201 of the interlayer assembly on the second face 102 of the sealing body is all within the second face 102 of the sealing body, and the second projection of the second end face 202 of the interlayer assembly on the second face 102 of the sealing body is within the outer peripheral contour of the second end face 202 of the interlayer assembly.

[0035] In the embodiment, the sealing body 1 comprises opposite first and second faces 101 and 102, both of which are closed figures without hollow interiors, i.e., each of them forms a complete and non-porous surface, so that the sealing body 1 can block the end face of the double-layer pipe 3, thereby avoiding air and glue leakage.

[0036] The intercalation assembly 2 comprises opposite first and second end faces 201 and 202. The first end face 201 is connected to the second face 102 of the end-capping body 1, and the intercalation assembly 2 and the end-capping body 1 can be integrally connected or fixed by fasteners (such as bolts, screws, etc., not shown in the figure) or other connection methods, so that the intercalation assembly 2 can be flexibly installed or removed as needed.

[0037] The area of the second end face 202 of the intercalation assembly 2 is smaller than that of the first end face 201, so that the intercalation assembly 2 is easy to insert when inserted into the gap layer of the double-layer pipe 3, and can be applied to double-layer pipes 3 of different gap layer thicknesses, and has wide applicability. Moreover, it can gradually reduce the occupation of the gap layer space. The area of the second end face 202 is smaller than that of the first end face 201, and the edge of the intercalation assembly 2 is gradually inwardly tapered. When the intercalation assembly 2 is inserted into the gap layer of the double-layer pipe 3, it will eventually be positioned at a position matching the thickness of the gap layer, and the portion of the front end extending into the gap layer will not be in contact with the edge of the double-layer pipe 3, thereby avoiding the problem that the edge of the double-layer pipe 3 cannot be glued.

[0038] Referring to Figure 4 and Figure 5 , in use, first, the second end face 202 of the intercalation assembly of the pipe end-capping clamp is inserted into the gap layer of the double-layer pipe 3 until the intercalation assembly 2 is deep enough to match the thickness of the gap layer. The intercalation assembly 2 is connected to the double-layer pipe 3 by static friction, and the end-capping body 1 further achieves the closure of the end face of the double-layer pipe 3. In a specific embodiment, the outer pipe of the double-layer pipe 3 is made of plastic material, which has a certain elasticity. Therefore, for such products, after the intercalation assembly 2 is inserted to the appropriate position, the connection between the two is more secure. Then, the gap layer of the double-layer pipe 3 is vacuumed by a vacuum device. At this time, the pressure difference between the inside and outside of the double-layer pipe 3 will cause the pipe end-capping clamp to be tightly sealed at both ends of the double-layer pipe 3. Then, the glue is injected into the gap layer by a glue injection device. The pipe end-capping clamp can achieve the effect of preventing air and glue from leaking. After the glue injection is completed, the glue is solidified, and then the pipe end-capping clamp is removed. The end-capping body 1 and the intercalation assembly 2 of the pipe end-capping clamp can be made of the same or different materials. The end-capping body can be made of metal, glass, plastic, ceramic, etc. For the intercalation assembly, the material needs to be selected according to the glue. Preferably, a material with low surface energy is selected, such as polyethylene, polypropylene, polytetrafluoroethylene, rubber, glass, ceramic, or a smooth surface metal, so that the intercalation assembly is difficult to bond or not tightly bonded with the glue, thereby facilitating the removal of the pipe end-capping clamp after the glue is solidified.

[0039] The pipe end sealing clamp is combined with the end sealing body and the interlayer assembly, realizes the closure of the end face of the double-layer pipe 3, can effectively control the gap layer thickness of the double-layer pipe 3, can be well applied to the glue injection process of the gap layer of the double-layer pipe 3 by the vacuum glue injection method, and has the advantages of simple structure, convenient operation and good sealing performance.

[0040] In one specific embodiment, the second projection is within the first projection. Then the edge of the interlayer assembly 2 is gradually contracted inward from the two side edges, further avoiding the problem that the edge of the double-layer pipe 3 cannot be glued.

[0041] In one specific embodiment, the area ratio of the second end face 202 of the interlayer assembly to the first end face 201 of the interlayer assembly is 0.5-0.99. By setting a reasonable area ratio range between the two end faces of the interlayer assembly 2, on the one hand, the interlayer assembly 2 can be easily inserted into the pipe, and the required sealing depth can be reached; on the other hand, the pipe will not be damaged or the glue layer will not be missing too much because of being inserted too deeply.

[0042] In one specific embodiment, the first projection and the second projection have the same geometric center. The above-mentioned geometric center is the center point of the first projection and the second projection respectively, so that it is suitable for most double-layer pipes 3 on the market whose outer layer and inner layer pipes are coaxial.

[0043] In one specific embodiment, the second end face 202 of the interlayer assembly is a circular ring shape, and the first end face 201 of the interlayer assembly is a circular ring shape. The interlayer assembly 2 of the embodiment is suitable for a double-layer pipe 3 whose outer layer pipe is a hollow cylinder and whose inner layer pipe is a hollow or solid cylinder.

[0044] In one specific embodiment, the width of the interlayer assembly 2 is 5-50mm, and the width is the distance from the first end face 201 of the interlayer assembly to the second end face 202 of the interlayer assembly.

[0045] In the embodiment, by setting the above-mentioned reasonable width range of the interlayer assembly 2, on the one hand, the interlayer assembly 2 can be easily inserted into the pipe, and the required sealing depth can be reached; on the other hand, the pipe will not be damaged or the glue layer will not be missing too much because of being inserted too deeply.

[0046] In one specific embodiment, the thickness of the end sealing body 1 is 0.1-10mm, and the thickness is the distance from the first face 101 of the end sealing body to the second face 102 of the end sealing body. In the embodiment, by setting the above-mentioned reasonable thickness range of the end sealing body 1, the end sealing body 1 has a certain structural strength, so as to ensure that it is not easy to be damaged in use.

[0047] In one embodiment, the first face 101 of the end-capping body is provided with a handle 103 to facilitate use.

[0048] In one embodiment, the surface roughness of the intercalation assembly is no more than 10 microns to reduce the adhesive strength of the intercalation assembly 2 to glue, so that the pipe end-capping clamp is easy to remove.

[0049] In one embodiment, the first face 101 of the end-capping body is the same shape as the second face 102 of the end-capping body, and the projection of the first face 101 of the end-capping body on the second face 102 of the end-capping body coincides with the second face 102 of the end-capping body.

[0050] The pipe end-capping clamp of the utility model, through the structural design of the combination of the above-mentioned end-capping body 1 and intercalation assembly 2, the end-capping body 1 is closely attached to the end of the double-layer pipe 3, effectively preventing the leakage of air and glue during the glue injection process; at the same time, the second end face of the intercalation assembly 2 is designed to be smaller than the first end face, so that the intercalation assembly 2 can be accurately inserted between the two layers of the double-layer pipe 3, forming a stable support structure, thereby accurately controlling the thickness of the gap layer between the two pipes, not only facilitating the uniform distribution of sealant, but also avoiding the problems of uneven glue injection and poor sealing caused by excessive or insufficient gap. At the same time, by inserting the intercalation assembly 2 between the two layers of the double-layer pipe 3, the sealing effect of the pipe end-capping clamp on the end can be further improved, preventing the leakage of air and glue during the glue injection process. The pipe end-capping clamp of the utility model can ensure uniform sealant distribution and effective vacuum maintenance during the glue injection process, thereby improving the processing quality and reliability of the double-layer pipe 3. The utility model has the advantages of simple structure, convenient operation, greatly reduced production cost and labor intensity.

[0051] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and are not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model. The utility model can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent substitutions to some technical features. Any equivalent structure made by using the contents of the utility model specification and drawings, directly or indirectly used in other related technical fields, is also within the patent protection range of the utility model.

Claims

1. A pipe end closing clamp, characterized in that The end-capped body includes a first face and a second face, both of which are closed figures that are not hollow inside, and the first face of the end-capped body and the second face of the end-capped body are connected to each other, and the interlayer assembly includes a first end face and a second end face, the first end face of the interlayer assembly is connected to the second face of the end-capped body, and the second end face of the interlayer assembly is smaller than the first end face of the interlayer assembly, the first projection of the first end face of the interlayer assembly on the second face of the end-capped body is within the second face of the end-capped body, and the second projection of the second end face of the interlayer assembly on the second face of the end-capped body is within the second end face of the interlayer assembly.

2. The pipe end clamp of claim 1, wherein, The second projection is within the first projection.

3. The pipe end gripping clamp of claim 1, wherein, The ratio of the area of the second end face of the interlayer assembly to the area of the first end face of the interlayer assembly ranges from 0.5 to 0.

99.

4. The pipe end gripping clamp of claim 1, wherein, The first projection and the second projection have the same geometric center.

5. The pipe end gripping clamp of claim 1, wherein, The second end face of the interlayer assembly is a circular ring shape, and the first end face of the interlayer assembly is a circular ring shape.

6. The pipe end clamp of claim 1, wherein, The width of the interlayer assembly ranges from 5 mm to 50 mm, and the width is the distance from the first end face of the interlayer assembly to the second end face of the interlayer assembly.

7. The pipe end clamp of claim 1, wherein, The thickness of the end-capped body ranges from 0.1 mm to 10 mm, and the thickness is the distance from the first face of the end-capped body to the second face of the end-capped body.

8. The pipe end gripping clamp of claim 1, wherein, The first face of the end-capped body is provided with a handle.

9. The pipe end gripping clamp of claim 1, wherein, The surface roughness of the interlayer assembly is not greater than 10 microns.

10. The pipe end gripping clamp of claim 1, wherein, The first face of the end-capped body and the second face of the end-capped body have the same shape, and the projection of the first face of the end-capped body on the second face of the end-capped body coincides with the second face of the end-capped body.

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