Pipe joint and centrifugal air compressor

Abstract

The utility model provides a pipe joint which comprises a pipe main body and a locking nut, and a pipe through cavity penetrating through two ends of the pipe main body is arranged in the pipe main body. During installation, one end of the pipe joint is screwed into the first connector of the centrifugal air compressor, one end of the pipe joint is connected with the centrifugal air compressor, then the direction of the other end of the pipe body is adjusted, the other end of the pipe body is in butt joint with the second connector, and the anti-skid ring table and an inner cavity of the second connector are fixed through friction force. The locking nut is screwed down to fix the direction of the pipe joint, so that two ends of the pipe joint are firmly connected with the centrifugal air compressor. By means of the arrangement, after one end of the pipe joint is installed, the other end of the pipe joint can be adjusted by a needed angle on the same face. The utility model further provides a centrifugal air compressor with the pipe joint.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe joints, and particularly relates to a pipe joint and a centrifugal air compressor. Background Art

[0002] The pipe joint is a common pipe connection structure. Existing pipe joints are limited by the joints of the pipe joints themselves and can only achieve fixed-angle flow direction changes between their own inlet and outlet. After one end of the pipe joint is installed, the joint direction position cannot be adjusted at the other end.

[0003] Therefore, how to overcome the above technical defects is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The utility model aims to provide a pipe joint and a centrifugal air compressor, which can realize that after one end of the pipe joint is installed, the other end can be adjusted to a required angle on the same plane.

[0005] In order to solve the above technical problems, the utility model provides a pipe joint, comprising: a pipe body and a locking nut, wherein a pipe through cavity penetrating through both ends of the pipe body is provided in the pipe body;

[0006] One end of the tube body is used to connect with the first interface of the centrifugal air compressor, and the outer wall of one end of the tube body is provided with a first connecting thread and a second connecting thread in sequence near the end surface, and the first connecting thread is used to connect with the internal thread of the first interface;

[0007] The other end of the tube body is used to connect with the second interface of the centrifugal air compressor, and an anti-slip ring is provided on the outer side wall of the other end of the tube body, and the anti-slip ring is used to be fixed with the inner cavity of the second interface by friction;

[0008] The locking nut is used to be connected to the second connecting thread so that one end of the pipe body is tightly connected to the first interface.

[0009] Optionally, the above-mentioned pipe joint further includes: a flow regulating device detachably disposed in the pipe through cavity at one end of the pipe body, wherein the flow regulating device is used to regulate the flow of the fluid passing through the pipe joint.

[0010] Optionally, in the above-mentioned pipe joint, a third connecting thread is provided in the pipe through cavity at one end of the pipe body, and a fourth connecting thread for cooperating with the third connecting thread is provided on the outer side wall of the flow regulating device.

[0011] Optionally, in the above-mentioned pipe joint, the pipe through cavity at one end of the pipe body is provided with a mounting step near the third connecting thread, so as to limit the inward movement of the flow regulating device.

[0012] Optionally, in the above-mentioned pipe joint, a mounting groove is provided on the flow regulating device to facilitate the assembly and disassembly of the flow regulating device on the pipe body.

[0013] Optionally, in the above-mentioned pipe joint, the flow regulating device is a one-way valve.

[0014] Optionally, in the above pipe joint, a first backing groove is provided on the outer side wall of the pipe body between the anti-slip ring and the second connecting thread;

[0015] And / or, a second backing groove is provided on the outer side wall of the pipe body between the second connecting thread and the first connecting thread.

[0016] Optionally, the above-mentioned pipe joint further includes a gasket and a sealing ring for cooperating with the locking nut to lock the pipe body.

[0017] Optionally, in the above-mentioned pipe joint, the rotation directions of the first connecting thread and the second connecting thread are the same or opposite.

[0018] The utility model provides a centrifugal air compressor, comprising: a shell and a pipe joint as described in the above embodiment, wherein the shell is provided with a first interface and a second interface, and the first interface and the second interface are respectively connected to two ends of the pipe joint.

[0019] The utility model provides a pipe joint, which has the following beneficial effects:

[0020] During installation, screw one end of the pipe joint into the first interface of the centrifugal air compressor to connect one end of the pipe joint to the centrifugal air compressor, and then adjust the direction of the other end of the pipe body to dock with the second interface. Tighten the locking nut to fix the direction of the pipe joint so that both ends of the pipe joint are firmly connected to the centrifugal air compressor. The above arrangement enables one end of the pipe joint to be installed and the other end to be adjusted to the required angle on the same plane.

[0021] The utility model also provides a centrifugal air compressor with the pipe joint, which has the same beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1A schematic diagram of the structure of a pipe joint provided in an embodiment of the utility model;

[0024] Figure 2 A schematic diagram of the structure of the pipe body provided by an embodiment of the utility model;

[0025] Figure 3 A cross-sectional view of a pipe joint provided in an embodiment of the utility model;

[0026] Figure 4 An exploded view of a pipe joint provided in an embodiment of the utility model;

[0027] Figure 5 A schematic diagram of the structure of a flow regulating device provided in an embodiment of the utility model;

[0028] Figure 6 A schematic structural diagram of a centrifugal air compressor provided with a pipe joint according to an embodiment of the utility model.

[0029] In the above picture:

[0030] 1- pipe body; 11- anti-slip ring; 12- pipe cavity; 13- first undercut groove; 14- second connecting thread; 15- second undercut groove; 16- first connecting thread; 17- third connecting thread;

[0031] 2-locking nut;

[0032] 3- Gasket;

[0033] 4- Sealing ring;

[0034] 5-flow regulating device; 51-fourth connecting thread; 52-installation groove; 53-communication cavity;

[0035] 6-centrifugal air compressor; 61-housing;

[0036] 7-Hose;

[0037] 8-Clamp. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The core of the utility model is to provide a pipe joint and a centrifugal air compressor, which can realize that after one end of the pipe joint is installed, the other end can be adjusted to a required angle on the same plane.

[0040] In order to enable those skilled in the art to better understand the technical solution provided by the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Specifically, please refer to Figure 1-Figure 6 The utility model provides a pipe joint, comprising: a pipe body 1 and a locking nut 2, wherein a pipe through cavity 12 is provided in the pipe body 1 and passes through both ends of the pipe body 1. The pipe through cavity 12 is provided along the axial direction of the pipe body 1, so that the pipe body 1 forms a hollow tube shell structure, and the pipe through cavity 12 is used for fluid to pass through.

[0042] One end of the tube body 1 is used to connect to the first interface of the centrifugal air compressor 6. The outer wall of one end of the tube body 1 is provided with a first connecting thread 16 and a second connecting thread 14 in sequence near the end face. The first connecting thread 16 is used to connect to the internal thread of the first interface.

[0043] The other end of the pipe body 1 is used to connect to the second interface of the centrifugal air compressor 6. An anti-slip ring 11 is provided on the outer wall of the other end of the pipe body 1. The anti-slip ring 11 is used to be fixed to the inner cavity of the second interface through friction.

[0044] The locking nut 2 is used to connect with the second connecting thread 14 so that one end of the pipe body 1 is tightly connected with the first interface.

[0045] The present solution provides a pipe joint. During installation, one end of the pipe joint is screwed into the first interface of the centrifugal air compressor 6 to connect the one end of the pipe joint to the centrifugal air compressor 6. Then, the direction of the other end of the pipe body 1 is adjusted to dock the other end of the pipe body 1 with the second interface. The locking nut 2 is tightened to fix the direction of the pipe joint so that both ends of the pipe joint are firmly connected to the centrifugal air compressor 6. The above arrangement enables one end of the pipe joint to be installed and the other end to be adjusted to a desired angle on the same plane.

[0046] The present solution further comprises a flow regulating device 5 detachably arranged in the tube through cavity 12 at one end of the tube body 1 , and the flow regulating device 5 is used to regulate the flow of the fluid passing through the tube joint.

[0047] It should be noted that the flow rate of the fluid passing through the pipe joint is adjusted by adjusting the diameter of the connecting cavity 53 provided inside the flow regulating device 5. Since the air compressor requires a compact structure, if a valve is used to adjust the flow rate, the overall volume will increase. However, the cost of using the flow regulating device 5 in the present application is low and it is easy to replace and adjust.

[0048] The above arrangement can constitute an adjustable direction pipe joint structure, which can adjust the fluid flow while adjusting the joint direction, and has the advantages of simple structure, convenient use, easy installation and disassembly, low manufacturing cost, long service life, and adjustable direction and flow.

[0049] In a specific embodiment, a third connection thread 17 is provided in the tube through cavity 12 at one end of the tube body 1, and a fourth connection thread 51 for cooperating with the third connection thread 17 is provided on the outer wall of the flow regulating device 5. The fourth connection thread 51 is provided on the outside of the flow regulating device 5 and can be matched with the third connection thread 17 of the tube body 1.

[0050] All the above-mentioned connecting threads (including the first connecting thread 16, the second connecting thread 14, the third connecting thread 17 and the fourth connecting thread 51) can be metric threads or imperial threads. The threads of the locking nut 2 are metric threads or imperial threads.

[0051] In order to prevent the flow regulating device 5 from entering the pipe body 1 too deeply and being unable to be taken out, the pipe through cavity 12 at one end of the pipe body 1 is provided with an installation step near the third connecting thread 17 to limit the inward movement of the flow regulating device 5. The pipe through cavity 12 is provided with an installation step at the location where the flow regulating device 5 is installed, which can prevent the flow regulating device 5 from entering the housing 61 of the centrifugal air compressor 6 from the pipe body 1.

[0052] In addition, an anti-loosening adhesive layer may be applied between the flow regulating device 5 and the pipe through cavity 12. Of course, chamfers or fillets may be added to the installation step to reduce fluid resistance.

[0053] Furthermore, the flow regulating device 5 is provided with a mounting groove 52 to facilitate the assembly and disassembly of the flow regulating device 5 on the pipe body 1. The mounting groove 52 can be provided at one end exposed to the pipe body 1, so that external equipment can rotate the flow regulating device 5 through the mounting groove 52 to disassemble and adjust the position.

[0054] Preferably, the flow regulating device 5 may be a one-way valve, so as to adjust the direction of the fluid passing through the pipe joint.

[0055] In a specific embodiment, a first undercut groove 13 is provided on the outer wall of the pipe body 1 between the anti-slip ring 11 and the second connecting thread 14, and / or a second undercut groove 15 is provided between the second connecting thread 14 and the first connecting thread 16. The provision of the second undercut groove 15 facilitates thread processing and placement of the sealing ring 4. The provision of the first undercut groove 13 facilitates adjustment of the stroke of the locking nut 2.

[0056] The present solution also includes a gasket 3 and a sealing ring 4 for locking the tube body 1 in cooperation with the locking nut 2. Adding the gasket 3 and the sealing ring 4 can prevent gas or liquid leakage. The sealing ring 4 is an O-type sealing ring, and the material can be fluororubber or EPDM rubber.

[0057] Specifically, the rotation directions of the first connecting thread 16 and the second connecting thread 14 are the same or opposite, and can be adaptively selected according to actual needs.

[0058] In addition, the utility model also provides a centrifugal air compressor 6, including: a shell 61 and a pipe joint as in the above specific embodiment, the shell 61 is respectively provided with a first interface and a second interface, and the first interface and the second interface are respectively connected to the two ends of the pipe joint.

[0059] The first interface is provided on the housing 61 , and the second interface is connected to the anti-slip ring 11 of the pipe joint through the hose 7 .

[0060] Obviously, the centrifugal air compressor 6 having the above-mentioned pipe joint has the same beneficial effects, which will not be described in detail here.

[0061] In a specific embodiment, a pipe joint provided by the present solution includes: a pipe body 1, a locking nut 2, a gasket 3, a sealing ring 4 and a flow regulating device 5, and the outer surface of the pipe body 1 is sequentially provided with an anti-slip ring 11, a first undercut groove 13, a second connecting thread 14, a second undercut groove 15 and a first connecting thread 16. A pipe through cavity 12 is provided inside the pipe body 1, and the pipe through cavity 12 is provided through the pipe body 1, and a third connecting thread 17 is provided at the lower part of the pipe through cavity 12.

[0062] The first connection thread 16 at one end of the pipe body 1 is threadedly connected to the locking nut 2, and the second connection thread 14 is threadedly connected to the first interface on the housing 61. An anti-slip ring 11 is provided on the outer surface of the other end of the pipe body 1, and the anti-slip ring 11 is fixed to the inner cavity of the corresponding connecting pipeline by friction.

[0063] A second undercut 15 is provided between the first connecting thread 16 and the second connecting thread 14 to facilitate thread processing and placement of the sealing ring 4. A first undercut 13 is provided outside the pipe body 1. The width of the first undercut 13 should be greater than 4 mm to facilitate adjustment of the travel of the locking nut 2.

[0064] A sealing ring 4 is arranged outside the pipe body 1 to prevent fluid leakage.

[0065] During installation, screw one end of the pipe joint into the first interface on the shell 61 of the centrifugal air compressor 6, so that one end of the pipe joint is connected to the shell 61 of the centrifugal air compressor 6, adjust the pipe body 1 to the required direction (so that the other end of the pipe body 1 is docked with the second interface), and then insert the other end of the pipe body 1 into the hose 7, tighten the locking nut 2, fix the direction of the pipe joint, and firmly connect the pipe joint to the shell 61. Use the clamp 8 at the other end to clamp the hose 7 to prevent the hose 7 from slipping.

[0066] A flow regulating device 5 is provided inside the pipe body 1, and the flow rate and direction of the fluid flowing through the pipe cavity 12 are adjusted by the flow regulating device 5. A fourth connecting thread 51 is provided outside the flow regulating device 5 to connect with the third connecting thread 17 of the pipe body 1. A mounting groove 52 is provided at one end of the flow regulating device 5 to facilitate the disassembly and adjustment of the flow regulating device 5.

[0067] The characteristics and advantages of the adjustable direction pipe joint of the present scheme are: the pipe joint has a compact structure, is easy to install, and is convenient for automated installation. The direction of the pipe body 1 can be adjusted arbitrarily during use, and it has wide applicability; the design of the anti-slip ring 11 can effectively prevent the hose 7 from slipping; the flow rate and direction of the fluid flowing through the pipe cavity 12 can be adjusted through the flow regulating device 5, which is convenient for controlling the exhaust flow of the air compressor and improving the efficiency of the air compressor.

[0068] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0069] In the description of this application, the meaning of "plurality" is more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0070] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0071] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0072] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0074] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A pipe joint, characterized in that: include: A pipe body and a locking nut, wherein the pipe body is provided with a pipe through cavity penetrating through both ends of the pipe body; One end of the tube body is used to connect with the first interface of the centrifugal air compressor, and the outer wall of one end of the tube body is provided with a first connecting thread and a second connecting thread in sequence near the end surface, and the first connecting thread is used to connect with the internal thread of the first interface; The other end of the tube body is used to connect with the second interface of the centrifugal air compressor, and an anti-slip ring is provided on the outer side wall of the other end of the tube body, and the anti-slip ring is used to be fixed with the inner cavity of the second interface by friction; The locking nut is used to be connected to the second connecting thread so that one end of the pipe body is tightly connected to the first interface.

2. The pipe joint according to claim 1, characterized in that: Also includes: A flow regulating device is detachably arranged in the pipe through cavity at one end of the pipe body, and the flow regulating device is used to regulate the flow of the fluid passing through the pipe joint.

3. The pipe joint according to claim 2, characterized in that: A third connecting thread is arranged in the tube through cavity at one end of the tube main body, and a fourth connecting thread for matching with the third connecting thread is arranged on the outer side wall of the flow regulating device.

4. The pipe joint according to claim 3, characterized in that: The pipe through cavity at one end of the pipe body is provided with a mounting step near the third connecting thread for limiting the inward movement of the flow regulating device.

5. The pipe joint according to claim 3, characterized in that: The flow regulating device is provided with a mounting groove to facilitate the assembly and disassembly of the flow regulating device on the pipe body.

6. The pipe joint according to claim 2, characterized in that: The flow regulating device is a one-way valve.

7. The pipe joint according to claim 1, characterized in that: A first backing groove is provided on the outer side wall of the pipe body between the anti-slip ring and the second connecting thread; And / or, a second backing groove is provided on the outer side wall of the pipe body between the second connecting thread and the first connecting thread.

8. The pipe joint according to any one of claims 1 to 7, characterized in that: It also includes a gasket and a sealing ring for cooperating with the locking nut to lock the pipe body.

9. The pipe joint according to claim 1, characterized in that: The first connecting thread and the second connecting thread have the same or opposite rotation directions.

10. A centrifugal air compressor, characterized in that: include: A shell and a pipe joint as claimed in any one of claims 1 to 9, wherein a first interface and a second interface are provided on the shell, and the first interface and the second interface are respectively connected to two ends of the pipe joint.

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