Rigid pipeline joint connecting device

Abstract

The utility model discloses a rigid pipeline joint connecting device, which is characterized in that a first sleeve is in threaded connection with the inside of a first steel pipe, a second sleeve is in threaded connection with the inside of a second steel pipe, the first sleeve is inserted into the second sleeve, and a limiting ring is fixedly sleeved on the outer side of the first sleeve; a locking sleeve limited by a limiting ring is in threaded connection with the outer portion of the second sleeve, a one-way assembly is arranged in the first steel pipe or the second steel pipe, and a water outlet of the one-way assembly right faces the communicating position of the first steel pipe and the second steel pipe. The first casing pipe is inserted into the second casing pipe, so that the first steel pipe and the second steel pipe can be preliminarily positioned, then the first casing pipe and the second casing pipe are locked together through the locking sleeve, and compared with a flange connection mode, the connecting difficulty is greatly reduced, meanwhile, the one-way assembly is arranged in the first steel pipe or the second steel pipe, and the connecting efficiency is improved. And the inner wall of the vertically arranged steel pipe is prevented from being damaged by water flow backflow.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a rigid pipeline joint connection device. Background Art

[0002] Steel pipes are often used for the pumping work of subway foundation pits. They have high strength and strong compressive capacity, can withstand large external pressures, are suitable for use in deeper foundation pits or complex geological conditions, and are not easily deformed; they can be welded, with firm connection and good sealing performance, and can effectively prevent water leakage.

[0003] However, the weight of steel pipes is relatively large and the installation is relatively difficult. When aligning and installing two sections of steel pipes, especially when the steel pipes are arranged vertically upward along the foundation pit wall, during the connection, due to their weight, a crane is needed to lift the steel pipes, and workers need to align the two sections of steel pipes for sealed installation, which is relatively difficult. Moreover, the number of screws used for flange connection is too many, resulting in a long connection time, which further increases the connection difficulty. For installation workers, the operation is rather cumbersome and laborious. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rigid pipeline joint connection device to solve the above-mentioned deficiencies in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A rigid pipeline joint connection device, comprising: a first steel pipe and a second steel pipe. A first sleeve is threadedly connected inside the first steel pipe, and a second sleeve is threadedly connected inside the second steel pipe. The first sleeve is inserted into the second sleeve. A limiting ring is fixedly sleeved on the outer side of the first sleeve. A locking sleeve limited by the limiting ring is threadedly connected to the outer side of the second sleeve. A one-way component is arranged inside the first steel pipe or the second steel pipe, and the water outlet of the one-way component faces the connection part of the first steel pipe and the second steel pipe.

[0006] Further, a sealing ring is fixedly sleeved on the outer side of the first sleeve.

[0007] Further, a sealing gasket is arranged on one side of the second sleeve, and the first sleeve presses the sealing gasket inside the second sleeve.

[0008] Further, a plurality of hexagonal holes are equidistantly arranged on the outer side of the locking sleeve.

[0009] Further, the one-way component includes a housing. A sliding cylinder is slidably arranged inside the housing. An annular block is arranged inside the housing. The sliding cylinder is connected to the annular block through a spring.

[0010] Further, the end of the sliding cylinder is set in a frustum shape and abuts against the inner wall of the water inlet of the housing. Four circular holes are equidistantly arranged on the side surface of the sliding cylinder.

[0011] In the above technical solution, the beneficial effects of a rigid pipe joint connection device provided by the present utility model are as follows:

[0012] In the present utility model, the first sleeve is internally threaded in the first steel pipe, and the second sleeve is internally threaded in the second steel pipe. By inserting the first sleeve into the second sleeve, the first steel pipe and the second steel pipe can be preliminarily positioned. Then, the locking sleeve is threadedly connected to the outside of the second sleeve. Under the limiting action of the limiting ring, the locking sleeve locks the first sleeve and the second sleeve together, realizing the connection between the first steel pipe and the second steel pipe. Compared with the flange connection method, the connection difficulty is greatly reduced. At the same time, a one-way component is arranged in the first steel pipe or the second steel pipe, avoiding damage to the inner wall of the vertically arranged steel pipe caused by the backflow of water.

[0013] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the present disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and does not represent the full scope of the disclosed technology or a complete disclosure of all features. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram provided by an embodiment of the present utility model;

[0017] Figure 2 It is an expanded schematic structural diagram provided by an embodiment of the present utility model;

[0018] Figure 3 It is provided by an embodiment of the present utility model Figure 2 An enlarged view of part A.

[0019] Explanation of the reference numerals in the drawings:

[0020] 1. First steel pipe; 2. Second steel pipe; 3. First sleeve; 4. Second sleeve; 5. Limiting ring; 6. Locking sleeve; 61. Hexagonal hole; 7. Sealing ring; 8. One-way component; 81. Housing; 82. Sliding cylinder; 821. Circular hole; 83. Spring; 84. Ring block; 85. Liquid passing groove; 9. Sealing gasket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0022] Please refer to Figures 1 - 3 , a rigid pipe joint connecting device, comprising: a first steel pipe 1 and a second steel pipe 2. A first sleeve 3 is connected to the first steel pipe 1 by internal threads, and a second sleeve 4 is connected to the second steel pipe 2 by internal threads. The first sleeve 3 is inserted into the second sleeve 4. A limiting ring 5 is fixedly sleeved on the outer side of the first sleeve 3. A locking sleeve 6 limited by the limiting ring 5 is connected to the second sleeve 4 by external threads. The locking sleeve 6 is sleeved on the outer side of the first sleeve 3. As the locking sleeve 6 rotates, the locking sleeve 6 moves from the first sleeve 3 towards the second sleeve 4 and locks the first sleeve 3 and the second sleeve 4. A one-way component 8 is arranged in the first steel pipe 1 or the second steel pipe 2. The water outlet of the one-way component 8 faces the connection between the first steel pipe 1 and the second steel pipe 2. Water flows from the second steel pipe 2 to the first steel pipe 1. Under the suction of an external water pump, after the water flows through the one-way component 8, it is discharged outwards from the first steel pipe 1. During this process, the one-way component 8 concentrates the water flow towards the middle, reduces the scouring force of the water flow on the connection position between the first sleeve 3 and the second sleeve 4, and indirectly improves the sealing performance between the first sleeve 3 and the second sleeve 4.

[0023] Specifically, in the present utility model, the first sleeve 3 is internally threaded to the first steel pipe 1, and the second sleeve 4 is internally threaded to the second steel pipe 2. By inserting the first sleeve 3 into the second sleeve 4, the first steel pipe 1 and the second steel pipe 2 can be initially positioned. Then, the locking sleeve 6 is threadedly connected to the outside of the second sleeve 4. Under the limiting action of the limiting ring 5, the locking sleeve 6 locks the first sleeve 3 and the second sleeve 4 together, realizing the connection between the first steel pipe 1 and the second steel pipe 2. Compared with the flange connection method, the connection difficulty is greatly reduced. At the same time, a one-way component 8 is arranged in the first steel pipe 1 or the second steel pipe 2, avoiding damage to the inner wall of the vertically arranged steel pipe caused by water flow back.

[0024] Furthermore, a sealing ring 7 is fixedly sleeved on the outer side of the first sleeve 3.

[0025] Specifically, referring to Figure 2 , a sealing ring 7 is sleeved on the outer side of the circular ring extending from the middle of the side surface of the first sleeve 3. When the extending part is inserted into the second sleeve 4 until the outer side of the sealing ring 7 is stuck into the annular groove formed in the second sleeve 4 for accommodating the upper half of the sealing ring 7, the sealing ring 7 deforms to a certain extent between the first sleeve 3 and the second sleeve 4 to complete the sealing.

[0026] Further, a gasket 9 is provided on one side of the second sleeve 4, and the first sleeve 3 presses the gasket 9 inside the second sleeve 4.

[0027] Specifically, referring to Figure 1 and Figure 2 , when the locking sleeve 6 is screwed outside the second sleeve 4, as the locking sleeve 6 rotates, the limiting ring 5 resists the movement of the locking sleeve 6, so that the locking sleeve 6 drives the entire first steel pipe 1 to approach the second sleeve 4 through the limiting ring 5. Subsequently, the side of the second sleeve 4 will approach the first sleeve 3 and the limiting ring 5. A gasket 9 is provided on the outside of the extension of the side of the limiting ring 5 and the side of the first sleeve 3. When the second sleeve 4 gradually approaches the first sleeve 3 and the limiting ring 5, the gasket 9 will be squeezed and deformed, thereby playing a sealing role.

[0028] Further, a plurality of hexagonal holes 61 are equidistantly opened on the outside of the locking sleeve 6.

[0029] Specifically, referring to Figure 1 , the hexagonal holes 61 are opened along the outer side of the locking sleeve 6 and are arranged in an equidistant annular distribution. An external hexagonal rod can be inserted into the hexagonal holes 61 to assist in rotating the locking sleeve 6, so as to achieve the purpose of saving effort.

[0030] Further, the one-way component 8 includes a housing 81, a sliding cylinder 82 is slidably arranged in the housing 81, a ring block 84 is arranged in the housing 81, the sliding cylinder 82 is connected to the ring block 84 through a spring 83, the end of the sliding cylinder 82 is set in a frustum shape and abuts against the inner wall of the water inlet of the housing 81, and four circular holes 821 are equidistantly opened on the side of the sliding cylinder 82.

[0031] Specifically, a liquid passing groove 85 is opened in the housing 81, and the liquid passing groove 85 is located on the periphery of the circular holes 821. Under normal circumstances, under the elastic force of the spring 83, the sliding cylinder 82 is propped against the inner wall of the water inlet of the housing 81. The spring 83 is located inside the sliding cylinder 82, with one end propping against the inner wall of the sliding cylinder 82 and the other end propping against the ring block 84; referring to Figure 3 , when the external water pump pumps water, the pressure of the water flow overcomes the elastic force of the spring 83 and pushes the sliding cylinder 82, so that the right end of the sliding cylinder 82 contacts the ring block 84. At this time, the sliding cylinder 82 withdraws from the water inlet of the housing 81, and the water flow flows into the housing 81 from the outside of the left end of the housing 81, passes through the liquid passing groove 85 and the circular holes 821 and then enters the sliding cylinder 82, and flows out from the water outlet of the housing 81; when the water pump stops running, the water in the vertically arranged steel pipe loses power and will flow back. The spring 83 pushes the sliding cylinder 82 against the inner wall of the water inlet of the housing 81, so that the water flow cannot flow back, so that the water flow is distributed to each section of the pipeline, sharing the damage caused by the water flow back, thereby playing a role in protecting the lowermost steel pipe.

[0032] In the present utility model, referring to Figures 1 to 3, first, put the locking sleeve 6 on the outside of the first sleeve 3, thread-connect the first steel pipe 1 to the first sleeve 3, and thread-connect the second steel pipe 2 to the second sleeve 4. Then, put the sealing ring 7 and the gasket 9 on the outside of the extension part on the side of the first sleeve 3. Immediately insert the extension part of the first sleeve 3 into the second sleeve 4 and start to turn the locking sleeve 6, thread-connect the locking sleeve 6 to the outside of the second sleeve 4, and finally tighten the locking sleeve 6 by inserting a hexagonal prism into the hexagonal hole 61, so that the upper half of the sealing ring 7 is also located in the annular groove formed in the second sleeve 4, and the gasket 9 deforms to improve the sealing performance.

[0033] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rigid pipe joint connecting device, comprising: The first steel pipe (1) and the second steel pipe (2), characterized in that: a first sleeve (3) is connected to the first steel pipe (1) by internal threads, a second sleeve (4) is connected to the second steel pipe (2) by internal threads, the first sleeve (3) is inserted into the second sleeve (4), a limiting ring (5) is fixedly sleeved on the outer side of the first sleeve (3), a locking sleeve (6) limited by the limiting ring (5) is connected to the second sleeve (4) by external threads, a one-way assembly (8) is arranged in the first steel pipe (1) or the second steel pipe (2), and the water outlet of the one-way assembly (8) faces the connection part of the first steel pipe (1) and the second steel pipe (2).

2. The rigid pipe joint connecting device according to claim 1, characterized in that, A sealing ring (7) is fixedly sleeved on the outside of the first sleeve (3).

3. The rigid pipe joint connection device according to claim 2, characterized in that, A sealing gasket (9) is arranged on one side of the second sleeve (4), and the first sleeve (3) presses the sealing gasket (9) inside the second sleeve (4).

4. The rigid pipe joint connection device according to claim 3, characterized in that, A plurality of hexagonal holes (61) are equidistantly arranged on the outer side of the locking sleeve (6).

5. A rigid pipe joint connection device according to claim 1, characterized in that, The one-way assembly (8) includes a housing (81), a sliding cylinder (82) is slidably arranged in the housing (81), a ring block (84) is arranged in the housing (81), and the sliding cylinder (82) is connected to the ring block (84) by a spring (83).

6. The rigid pipe joint connecting device according to claim 5, characterized in that, The end of the sliding cylinder (82) is set in a frustum shape and abuts against the inner wall of the water inlet of the housing (81), and four circular holes (821) are equidistantly arranged on the side surface of the sliding cylinder (82).

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