Connecting casting for thin-wall pipeline

Abstract

The utility model relates to the field of connecting pieces, in particular to a connecting casting for a thin-wall pipeline, which comprises a main cylinder, connecting ring grooves are arranged on two end faces of the main cylinder, conical surfaces are arranged on inner ring surfaces of the connecting ring grooves, sealing rings are further arranged in the connecting ring grooves, each sealing ring comprises a pressing portion, and the pressing portions are in contact with the conical surfaces. A plurality of connecting holes are further evenly formed in the main cylinder body, the connecting holes penetrate through the main cylinder body and then communicate with the connecting ring groove, and connecting bolts are detachably arranged in the connecting holes. By arranging the connecting ring groove and the sealing ring in a specific shape, when the thin-wall pipeline is connected with the main cylinder body through the connecting bolt, the thin-wall pipeline does not deform too much, meanwhile, the sealing ring can make close contact with the thin-wall pipeline, and the sealing performance is improved; in addition, through the arrangement of the abutting plane, the force application area of the connecting bolt is increased, and fixing is firmer.

Description

Technical Field

[0001] The utility model relates to the field of connecting pieces, in particular to a connecting casting used for thin-walled pipelines. Background Art

[0002] The pipe connector is a device made of stainless steel and rubber components to achieve the sealing and pressure-bearing function. It has a very compact structure and does not require any treatment of the pipe ends during construction. Just put the connector on the two pipe ends to be connected and tighten the side bolts to make the teeth bite the surface of the pipe ends to achieve a limit fixation, and the sealing sleeve is tightly attached to the pipe to achieve a locked state of a sealed and firmly connected connection.

[0003] However, for thin-walled pipes, directly tightening the side bolts to fix the connection can easily cause the thin-walled pipe to deform, thereby generating gaps and causing leakage. Therefore, it is necessary to improve such a structure to overcome the above defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a connecting casting for thin-walled pipes. The utility model is achieved through the following technical solutions:

[0005] A connection casting for a thin-walled pipe comprises a main cylinder body, both end surfaces of which are provided with connection ring grooves, the inner ring surface of which is provided with a conical surface, a sealing ring is also provided in the connection ring groove, the sealing ring comprises a clamping portion, the clamping portion is in contact with the conical surface, a plurality of connection holes are also evenly provided on the main cylinder body, the connection holes penetrate the main cylinder body and are connected with the connection ring groove, and connection bolts are detachably provided in the connection holes.

[0006] In the above technical solution: the main cylinder is used to realize the connection function and allow liquid or gas to pass through; the connecting ring groove is used to position and preliminarily clamp the thin-walled pipe to be connected; the setting of the conical surface is used to enable the compression part of the sealing ring to be in close contact with the thin-walled pipe to be connected; the connecting hole is used to set the connecting bolt, and the connecting bolt is used to firmly fix the thin-walled pipe to the main cylinder.

[0007] The utility model is further configured as follows: the sealing ring further comprises a contact portion and a connecting portion, the connecting portion is in contact with the outer wall surface of the connecting ring groove, and the connecting portion is used to connect the contact portion and the pressing portion.

[0008] In the above technical solution: the contact part is used to contact the side wall of the thin-walled pipe, so that it is pushed by the thin-walled pipe; the connecting part is used to transmit the movement trend, so that the clamping part has a tendency to move along the conical surface, so that the clamping part is in close contact with the thin-walled pipe.

[0009] The utility model is further configured as follows: the cross-sectional shape of the pressing portion is a right-angled trapezoid.

[0010] In the above technical solution: the cross-sectional shape of the clamping portion is a right-angled trapezoid, which is used to prevent the end of the thin-walled pipe from contacting the clamping portion first instead of the contact portion.

[0011] The utility model is further configured as follows: the length of the contact portion is smaller than the length of the pressing portion.

[0012] In the above technical solution: the length of the contact portion is smaller than the length of the clamping portion, so that when the thin-walled pipe enters the connecting ring groove and contacts the contact portion, part of the structure of the clamping portion is already located below the thin-walled pipe.

[0013] The utility model is further configured as follows: a guiding arc surface is provided at the bottom of the connecting ring groove, and the connecting portion contacts the guiding arc surface.

[0014] In the above technical solution: the guiding arc surface is used to enable the connecting part to move smoothly along the guiding arc surface when the contact part is pushed.

[0015] The utility model is further configured as follows: an abutment plane is further provided on the inner ring surface of the connecting ring groove, and the position of the abutment plane corresponds to the position of the connecting hole.

[0016] In the above technical solution: the abutting plane is used for the end of the connecting bolt to slightly squeeze the thin-walled pipe, so that the fixing of the connecting bolt is more firmly.

[0017] The utility model discloses a connecting casting for thin-walled pipes. Compared with the prior art:

[0018] 1. The utility model provides a connecting ring groove and a sealing ring of a specific shape, so that when the thin-walled pipe is connected to the main cylinder through the connecting bolts, the thin-walled pipe will not be deformed too much, and the sealing ring will be in close contact with the thin-walled pipe, thereby improving the sealing performance;

[0019] 2. The utility model also increases the force application area of ​​the connecting bolts by setting the abutting plane, so that the fixation is more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of the utility model;

[0021] Figure 2 It is a schematic diagram of the utility model being assembled with a thin-walled pipe;

[0022] Figure 3 for Figure 2 An enlarged schematic diagram of point A;

[0023] Figure 4It is a schematic diagram of the sealing ring of the utility model.

[0024] The corresponding component names represented by the numbers and letters in the figure are: 10-main cylinder; 101-connecting ring groove; 101a-conical surface; 101b-guiding arc surface; 101c-abutment plane; 102-connecting hole; 20-sealing ring; 201-clamping part; 202-contact part; 203-connecting part; 30-connecting bolt. DETAILED DESCRIPTION

[0025] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0026] like Figure 1-4 As shown, the utility model proposes a connection casting for thin-walled pipes, including a main cylinder 10, both end surfaces of the main cylinder 10 are provided with connection annular grooves 101, the inner annular surface of the connection annular groove 101 is provided with a conical surface 101a, a sealing ring 20 is also provided in the connection annular groove 101, the sealing ring 20 includes a pressing portion 201, the pressing portion 201 is in contact with the conical surface 101a, and a plurality of connection holes 102 are evenly provided on the main cylinder 10, the connection holes 102 penetrate the main cylinder 10 and communicate with the connection annular groove 101, and a connection bolt 30 is detachably provided in the connection hole 102. Among them, the outer width of the connection annular groove 101 is slightly larger than the thickness of the thin-walled pipe; the number of the connection holes 102 is at least 8.

[0027] like Figure 1-4 As shown, the utility model proposes a connection casting for thin-walled pipes, the sealing ring 20 also includes a contact portion 202 and a connection portion 203, the connection portion 203 maintains contact with the outer wall surface of the connecting ring groove 101, and the connection portion 203 is used to connect the contact portion 202 and the clamping portion 201.

[0028] like Figure 1-4 As shown, in the connection casting for thin-walled pipes proposed by the present invention, the cross-sectional shape of the clamping portion 201 is a right-angle trapezoid, wherein the inclination angle of the clamping portion 201 is consistent with the inclination angle of the conical surface 101a.

[0029] like Figure 1-4 As shown, in the connection casting for thin-walled pipes proposed by the present invention, the length of the contact portion 202 is smaller than the length of the pressing portion 201 .

[0030] like Figure 1-4As shown, the utility model provides a connection casting for thin-walled pipes, wherein a guide arc surface 101b is provided at the bottom of the connection ring groove 101, and the connection portion 203 contacts the guide arc surface 101b.

[0031] like Figure 1-4 As shown, the utility model proposes a connection casting for thin-walled pipes, wherein the inner ring surface of the connection ring groove 101 is further provided with abutment plane 101c, and the position of the abutment plane 101c corresponds to the position of the connection hole 102. The number of the abutment planes 101c is consistent with the number of the connection bolts 30.

[0032] The working principle of the utility model is:

[0033] a) Insert the end of the thin-walled pipe into the connecting ring groove;

[0034] b) Push the main cylinder;

[0035] c) The end of the thin-walled pipe squeezes the contact part of the sealing ring;

[0036] d) The contact portion pushes the connection portion to flip along the guide arc surface;

[0037] e) The pressing part is squeezed against the inner surface of the thin-walled pipe, so that the pressing part is deformed and in close contact with the inner surface of the thin-walled pipe;

[0038] f) Screw the connecting bolts into the connecting holes and tighten them;

[0039] g) The bottom of the connecting bolt presses the thin-walled pipe against the abutting plane to achieve fixation.

[0040] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

[0041] 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A connection casting for thin-walled pipes, characterized in that: The invention comprises a main cylinder (10), wherein both end surfaces of the main cylinder (10) are provided with connecting annular grooves (101), the inner annular surface of the connecting annular groove (101) is provided with a conical surface (101a), a sealing ring (20) is also provided in the connecting annular groove (101), the sealing ring (20) comprises a clamping portion (201), the clamping portion (201) is in contact with the conical surface (101a), a plurality of connecting holes (102) are also evenly provided on the main cylinder (10), the connecting holes (102) penetrate the main cylinder (10) and are connected with the connecting annular groove (101), and connecting bolts (30) are detachably provided in the connecting holes (102).

2. A connection casting for thin-walled pipes according to claim 1, characterized in that: The sealing ring (20) further comprises a contact portion (202) and a connecting portion (203), wherein the connecting portion (203) maintains contact with the outer wall surface of the connecting ring groove (101), and the connecting portion (203) is used to connect the contact portion (202) and the pressing portion (201).

3. A connection casting for thin-walled pipes according to claim 2, characterized in that: The cross-sectional shape of the pressing portion (201) is a right-angled trapezoid.

4. A connection casting for thin-walled pipes according to claim 3, characterized in that: The length of the contact portion (202) is smaller than the length of the pressing portion (201).

5. A connection casting for thin-walled pipes according to any one of claims 2 to 4, characterized in that: A guiding arc surface (101b) is provided at the bottom of the connecting ring groove (101), and the connecting portion (203) is in contact with the guiding arc surface (101b).

6. A connection casting for thin-walled pipes according to claim 5, characterized in that: An abutment plane (101c) is also provided on the inner annular surface of the connecting annular groove (101), and the position of the abutment plane (101c) corresponds to the position of the connecting hole (102).

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