Connecting pipe

Abstract

The utility model provides a connecting pipe which comprises a pipe body which comprises a pipe body main body and a pipe body protruding ring. The one-way valve is arranged in the pipe body; the nut comprises a nut body, a limiting ring arranged at one end of the nut body and threads arranged on the inner wall of the nut body. The connecting pipe comprises a connecting pipe body, the outer diameter of the connecting pipe body is equal to or smaller than the inner diameter of the pipe body protruding ring, a connecting pipe protruding block matched with the pipe body protruding ring is arranged on the outer wall of the connecting pipe body, the connecting protruding block comprises a connecting protruding block straight face, a connecting protruding block inclined face and a connecting protruding block concave face, and the outer diameter of the connecting protruding block straight face is larger than the inner diameter of the pipe body protruding ring. The outer diameter of the concave face of the connecting protruding block is equal to or smaller than the inner diameter of the pipe body protruding ring, the inclined face of the connecting protruding block is in smooth transition from the straight face of the connecting protruding block to the concave face of the connecting protruding block, one end of the connecting pipe body is inserted into the pipe body, and the other end of the connecting pipe body is provided with a limiting protrusion matched with the limiting ring. The utility model has the beneficial effects of simple structure, convenience in operation and firmness in connection.

Description

A connecting pipe Technical Field

[0001] This utility model relates to the field of sealing technology, and in particular to a connecting pipe. Background Technology

[0002] As a core connector in fluid transport systems, connecting pipes are widely used in water supply and drainage, HVAC, pneumatic and hydraulic systems, industrial pipelines, and many other fields. Their ease of connection, sealing reliability, structural robustness, and operational safety directly determine the overall operating performance and service life of the pipeline system. Currently, conventional connecting pipes on the market generally suffer from several technical shortcomings, specifically as follows:

[0003] The connection process is cumbersome: it mostly uses traditional structures such as threaded connections, flange connections, or clamp locking. Assembly and disassembly require special tools such as wrenches and calipers. The steps are complicated, time-consuming and labor-intensive, and quick plug-in connections cannot be achieved, resulting in low construction and maintenance efficiency.

[0004] Poor connection strength and sealing: The connection parts are prone to loosening and slippage due to external vibration and medium pressure impact. The sealing structure is simple and easy to age, resulting in frequent medium leakage problems and affecting the stability of pipeline transportation.

[0005] Lack of unidirectional flow control: Most connecting pipes do not integrate a check valve, making it easy for fluid to backflow. This fails to meet the requirements for unidirectional flow control in pipelines and can easily cause equipment damage and media contamination.

[0006] Insufficient pipe protection: The pipe body has weak tensile and shear resistance, making it susceptible to damage from external pressure and friction. It also has poor corrosion resistance, and long-term use can easily lead to deformation and rust, significantly shortening the product's service life.

[0007] Low safety during use: The ends of the pipe body and protective components are mostly sharp-edged structures without humanized protective design. They are very easy to scratch operators during assembly and use, posing a safety hazard.

[0008] In response to a series of problems existing in the connection pipe, such as inconvenient assembly, loose connection, sealing failure, lack of one-way flow control, weak protection, and poor safety, the industry urgently needs a connection pipe with simple structure, stable connection, reliable sealing, one-way valve function, and safe protection. Summary of the Invention

[0009] This utility model proposes a connecting pipe that solves the above-mentioned problems in the prior art.

[0010] The technical solution of this utility model is implemented as follows:

[0011] A connecting pipe, comprising:

[0012] The pipe body includes a pipe body body and a pipe body convex ring provided on the inner wall of the pipe body body;

[0013] A one-way valve is installed inside the pipe body;

[0014] The nut includes a nut body, a limiting ring disposed at one end of the nut body, and a thread disposed on the inner wall of the nut body, wherein the end of the nut body with the limiting ring is close to the tube body.

[0015] A connecting pipe includes a connecting pipe body, the outer diameter of which is equal to or smaller than the inner diameter of the pipe body convex ring. The outer wall of the connecting pipe body is provided with a connecting pipe protrusion that matches the pipe body convex ring. The connecting protrusion includes a connecting protrusion straight surface, a connecting protrusion inclined surface, and a connecting protrusion concave surface. The outer diameter of the connecting protrusion straight surface is larger than the inner diameter of the pipe body convex ring, and the outer diameter of the connecting protrusion concave surface is equal to or smaller than the inner diameter of the pipe body convex ring. The connecting protrusion inclined surface smoothly transitions from the connecting protrusion straight surface to the connecting protrusion concave surface. One end of the connecting pipe body is inserted into the pipe body, and the other end of the connecting pipe body is provided with a limiting protrusion that matches the limiting ring.

[0016] Furthermore, the connecting pipe of this utility model also includes:

[0017] A protective net is used to cover the outer wall of the pipe body.

[0018] Preferably, the protective net is a metal protective net.

[0019] Furthermore, the connecting pipe of this utility model also includes:

[0020] The protective cover is installed at the end of the pipe body and is fitted over the outside of the protective net.

[0021] Furthermore, the connecting pipe and one-way valve described in this utility model include:

[0022] The outer diameter of the one-way valve body is equal to the inner diameter of the convex ring of the pipe body;

[0023] A sealing ring is located at one end inside the one-way valve body;

[0024] Valve ring, the valve ring is located at the other end of the one-way valve body;

[0025] A connecting plate, one end of which is connected to the inner wall of the one-way valve body, and the other end of which is connected to the outer wall of the valve ring;

[0026] Guide post, one end of which is located inside the valve ring;

[0027] The valve plate is located inside the one-way valve body. One side of the valve plate is connected to the other end of the guide post. The outer diameter of the valve plate is larger than the inner diameter of the sealing ring, and the other side of the valve plate abuts against the sealing ring.

[0028] A spring is fitted onto a guide post and positioned between the valve ring and the valve plate.

[0029] Furthermore, the connecting pipe and check valve described in this utility model also include:

[0030] A limiting groove is provided on the valve plate, one end of the spring is located in the limiting groove, and the other end of the spring abuts against the valve ring.

[0031] Furthermore, the connecting pipe and check valve described in this utility model also include:

[0032] A sealing ring groove is provided on the outer wall of the one-way valve body;

[0033] A sealing ring is placed inside the sealing ring groove, and the outer diameter of the sealing ring is larger than the inner diameter of the convex ring of the pipe body.

[0034] Furthermore, the protective cover of the connecting pipe described in this utility model includes:

[0035] The protective cover body is located at the end of the pipe body and is fitted over the outside of the protective net;

[0036] The arc-shaped part of the protective cover is located at one end of the protective cover body. The inner diameter of the arc-shaped part of the protective cover is smaller than the inner diameter of the protective cover body, and the arc-shaped part of the protective cover transitions smoothly with the protective cover body.

[0037] The beneficial effects of this utility model are as follows:

[0038] The connecting tube described in this utility model can be connected by passing the connecting tube through the nut and inserting it into the tube body. Since the outer diameter of the concave surface of the connecting protrusion is equal to or smaller than the inner diameter of the convex ring of the tube body, and the inclined surface of the connecting protrusion smoothly transitions from the straight surface of the connecting protrusion to the concave surface of the connecting protrusion, the straight surface of the connecting protrusion can be easily engaged between the convex ring of the tube body. At the same time, since the outer diameter of the straight surface of the connecting protrusion is larger than the inner diameter of the convex ring of the tube body, the connection is very firm. Finally, the limiting protrusion limits the limiting ring, thereby limiting the nut body. It can be connected to other tube bodies in the outside through the nut body. The structure is simple, the operation is convenient, and the connection is firm. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 is an exploded view of a connecting pipe according to this utility model;

[0041] Figure 2 is a structural schematic diagram of a one-way valve for a connecting pipe according to this utility model;

[0042] Figure 3 is another structural schematic diagram of a one-way valve for a connecting pipe according to this utility model;

[0043] Figure 4 is another structural schematic diagram of a one-way valve for a connecting pipe according to this utility model;

[0044] Figure 5 is a structural schematic diagram of a connecting pipe according to this utility model. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] As shown in Figures 1-5, the connecting pipe of this utility model includes:

[0047] The pipe body 1 includes a pipe body 101 and a pipe body convex ring 102 provided on the inner wall of the pipe body 101;

[0048] One-way valve 2 is installed inside the pipe body 101;

[0049] Nut 3 includes nut body 301, a limiting ring 302 disposed at one end of nut body 301 and a thread 303 disposed on the inner wall of nut body 301, the end of nut body 301 with limiting ring 302 being close to tube body 1.

[0050] The connecting pipe 4 includes a connecting pipe body 401. The outer diameter of the connecting pipe body 401 is equal to or less than the inner diameter of the pipe body protrusion ring 102. The outer wall of the connecting pipe body 401 is provided with a connecting pipe protrusion 402 that matches the pipe body protrusion ring 102. The connecting protrusion 402 includes a connecting protrusion straight surface 4021, a connecting protrusion inclined surface 4022, and a connecting protrusion concave surface 4023. The outer diameter of the connecting protrusion concave surface 4023 is equal to or less than the inner diameter of the pipe body protrusion ring 102. The outer diameter of the connecting protrusion straight surface 4021 is greater than the inner diameter of the pipe body protrusion ring 102. The connecting protrusion inclined surface 4022 smoothly transitions from the connecting protrusion straight surface 4021 to the connecting protrusion concave surface 4023. One end of the connecting pipe body 401 is inserted into the pipe body body 101, and the other end of the connecting pipe body 401 is provided with a limiting protrusion 403 that matches the limiting ring 302.

[0051] The connecting pipe described in this utility model can be connected by passing the connecting pipe 4 through the nut 3 and inserting it into the pipe body 1. Since the outer diameter of the concave surface 4023 of the connecting protrusion is equal to or less than the inner diameter of the convex ring 102 of the pipe body, and the inclined surface 4022 of the connecting protrusion smoothly transitions from the straight surface 4021 of the connecting protrusion to the concave surface 4023 of the connecting protrusion, the straight surface 4021 of the connecting protrusion can be easily snapped between the convex rings 102 of the pipe body. At the same time, since the outer diameter of the straight surface 4021 of the connecting protrusion is greater than the inner diameter of the convex ring 102 of the pipe body, each straight surface 4021 of the connecting protrusion can be locked between the two convex rings 102 of the pipe body, so the connection is very firm. Finally, the limiting protrusion 403 limits the limiting ring 302, thereby limiting the nut body 301. It can be connected to other pipe bodies in the outside through the nut body 301. The structure is simple, the operation is convenient, and the connection is firm.

[0052] The connecting pipe of this utility model may further include:

[0053] Protective netting 5 is wrapped around the outer wall of the pipe body 101.

[0054] Preferably, the protective net 5 is a metal protective net, which can be a woven metal protective net or a one-piece molded metal protective net.

[0055] The connecting pipe of this utility model, by setting a protective net 5, can not only increase ductility and pull resistance, but also improve shear resistance, corrosion resistance, extend service life, and improve safety.

[0056] The connecting pipe of this utility model may further include:

[0057] The protective cover 6 is located at the end of the pipe body 101 and is fitted over the outside of the protective net 5.

[0058] The connecting pipe of this utility model, by setting a protective cover 6, can cover the end of the pipe body 101 and the end of the protective net 5, so as to avoid scratching the user and improve safety.

[0059] The connecting pipe of this utility model may include a one-way valve 2, which may include:

[0060] The one-way valve body 201 has an outer diameter equal to the inner diameter of the pipe body protruding ring 102.

[0061] A sealing ring 202 is disposed at one end inside the one-way valve body 201;

[0062] Valve ring 203 is disposed at the other end of the one-way valve body 201;

[0063] Connecting plate 204, one end of connecting plate 204 is connected to the inner wall of one-way valve body 201, and the other end of connecting plate 204 is connected to the outer wall of valve ring 203;

[0064] Guide post 205, one end of guide post 205 is disposed inside valve ring 203;

[0065] Valve plate 206 is disposed inside the one-way valve body 201. One side of valve plate 206 is connected to the other end of guide post 205. The outer diameter of valve plate 206 is larger than the inner diameter of sealing ring 202. The other side of valve plate 206 abuts against sealing ring 202.

[0066] Spring 207 is sleeved on guide post 205 and positioned between valve ring 203 and valve plate 206.

[0067] The connecting pipe of this utility model, when the medium in the pipe body 1 flows in from the side where the sealing ring 202 is provided, such as water or air, the medium pushes the valve plate 206, the valve plate 206 compresses the spring 207, and at the same time the guide post 205 guides it, so that a gap appears between the valve plate 206 and the sealing ring 202, allowing the medium in the pipe body 1 to pass through; conversely, when the medium in the pipe body 1 flows in from the side where the valve ring 203 is provided, the medium pushes the valve plate 206, causing the valve plate 206 to further press against the sealing ring 202 to achieve a better sealing effect, then the medium cannot pass through. The structure is simple, with unidirectional opening and good sealing effect.

[0068] The connecting pipe of this utility model, the one-way valve 2 may further include:

[0069] The limiting groove 208 is set on the valve plate 206. One end of the spring 207 is set in the limiting groove 208, and the other end of the spring 207 abuts against the valve ring 203.

[0070] The connecting pipe of this utility model, by setting the limiting groove 208, can limit the spring 207, which facilitates installation and more even force distribution, and further improves the sealing effect.

[0071] The connecting pipe of this utility model, the one-way valve 2 may further include:

[0072] A sealing ring groove 209 is provided on the outer wall of the one-way valve body 201;

[0073] The sealing ring 2010 is set in the sealing ring groove 209, and the outer diameter of the sealing ring 2010 is larger than the inner diameter of the tube body convex ring 102.

[0074] The connecting pipe of this utility model further improves the sealing effect by setting a sealing ring 2010.

[0075] The protective cover 6 of the connecting pipe described in this utility model may include:

[0076] The protective cover body 601 is located at the end of the pipe body 101 and is sleeved on the outside of the protective net 5;

[0077] The arc portion 602 of the protective cover is provided at one end of the protective cover body 601. The inner diameter of the arc portion 602 of the protective cover is smaller than the inner diameter of the protective cover body 601, and the arc portion 602 of the protective cover and the protective cover body 601 are smoothly transitioned.

[0078] The connecting pipe of this utility model has an inner diameter of the arc portion 602 of the protective cover that is smaller than the inner diameter of the protective cover body 601. The arc portion 602 of the protective cover and the protective cover body 601 transition smoothly, making the connection more rounded and improving the safety and comfort during operation.

[0079] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting pipe, characterized in that, include: Pipe body (1), including pipe body (101) and pipe body protrusion ring (102) disposed on the inner wall of pipe body (101); one-way valve (2), disposed inside pipe body (101); nut (3), including nut body (301), limiting ring (302) disposed at one end of nut body (301) and thread (303) disposed on the inner wall of nut body (301), the end of nut body (301) with limiting ring (302) is close to pipe body (1); connecting pipe (4), including connecting pipe body (401), the outer diameter of connecting pipe body (401) is equal to or less than the inner diameter of pipe body protrusion ring (102), the outer wall of connecting pipe body (401) is provided with a thread (102) that is connected to the inner wall of pipe body (101). 2) Matching connecting tube protrusion (402), the connecting protrusion (402) includes a connecting protrusion straight surface (4021), a connecting protrusion inclined surface (4022) and a connecting protrusion concave surface (4023), the outer diameter of the connecting protrusion concave surface (4023) is equal to or less than the inner diameter of the tube body protrusion ring (102), the outer diameter of the connecting protrusion straight surface (4021) is greater than the inner diameter of the tube body protrusion ring (102), the connecting protrusion inclined surface (4022) smoothly transitions from the connecting protrusion straight surface (4021) to the connecting protrusion concave surface (4023), one end of the connecting tube body (401) is inserted into the tube body body (101), and the other end of the connecting tube body (401) is provided with a limiting protrusion (403) matching the limiting ring (302).

2. The connecting pipe according to claim 1, characterized in that, Also includes: A protective net (5) is wrapped around the outer wall of the pipe body (101).

3. The connecting pipe according to claim 2, characterized in that, The protective net (5) is a metal protective net.

4. The connecting pipe according to claim 2, characterized in that, Also includes: A protective cover (6) is installed at the end of the pipe body (101) and is fitted on the outside of the protective net (5).

5. The connecting pipe according to claim 1, characterized in that, The one-way valve (2) includes: a one-way valve body (201), the outer diameter of which is equal to the inner diameter of the pipe body convex ring (102); a sealing ring (202), which is disposed at one end inside the one-way valve body (201); a valve ring (203), which is disposed at the other end inside the one-way valve body (201); and a connecting plate (204), one end of which is connected to the inner wall of the one-way valve body (201), and the other end of which is connected to the outer wall of the valve ring (203). Connect; guide post (205), one end of guide post (205) is set inside valve ring (203); valve plate (206), valve plate (206) is set inside one-way valve body (201), one side of valve plate (206) is connected to the other end of guide post (205), the outer diameter of valve plate (206) is larger than the inner diameter of sealing ring (202), and the other side of valve plate (206) abuts against sealing ring (202); spring (207), sleeved on guide post (205), is set between valve ring (203) and valve plate (206).

6. The connecting pipe according to claim 5, characterized in that, The one-way valve (2) also includes: a limiting groove (208), which is disposed on the valve plate (206), one end of the spring (207) is disposed in the limiting groove (208), and the other end of the spring (207) abuts against the valve ring (203).

7. The connecting pipe according to claim 5, characterized in that, The one-way valve (2) also includes: a sealing ring groove (209) disposed on the outer wall of the one-way valve body (201); and a sealing ring (2010) disposed in the sealing ring groove (209), wherein the outer diameter of the sealing ring (2010) is larger than the inner diameter of the pipe body protrusion ring (102).

8. The connecting pipe according to claim 4, characterized in that, The protective cover (6) includes: a protective cover body (601), which is disposed at the end of the tube body (101) and sleeved on the outside of the protective net (5); and a protective cover arc portion (602), which is disposed at one end of the protective cover body (601). The inner diameter of the protective cover arc portion (602) is smaller than the inner diameter of the protective cover body (601), and the protective cover arc portion (602) and the protective cover body (601) are smoothly transitioned.

Images