Bent pipe assembly

Abstract

The embodiment of the invention provides a bent pipe assembly which comprises a pipe body, the pipe body is provided with a main airflow area and a dynamic material storage area, the main airflow area is communicated with the dynamic material storage area, the main airflow area is communicated with an inlet and an outlet of the pipe body, the main airflow area is an arc-shaped cavity, the dynamic material storage area is located on the outer bent side of the main airflow area, and the dynamic material storage area is arranged corresponding to the inlet. According to the bent pipe assembly, solid particles in the airflow are separated from the airflow at the turning position of the main airflow area under the action of centrifugal force, the solid particles enter the dynamic storage area and fill the dynamic storage area, a buffer cushion layer of the solid particles is formed, and dynamic balance is achieved; solid particles subsequently entering the pipe body collide with the buffer cushion layer which achieves dynamic balance in the dynamic material storage area, so that the solid particles are prevented from colliding with the inner wall of the outer bent side of the main airflow area, abrasion of the inner wall of the outer bent side of the pipe body is reduced, the abrasion resistance of the bent pipe is improved, and the service life of the bent pipe is prolonged.

Description

Technical Field

[0001] The embodiments of the present invention belong to the technical field of pipelines, and in particular relate to a pipe elbow assembly. Background Art

[0002] In modern industrial production, pneumatic conveying of solid granular materials is widely used as a material conveying method. Elbows are important components in the pneumatic conveying of solid granular materials. Elbow wear and leakage and solid granular material blockage are the most common problems, which seriously affect the safe and stable operation of upstream and downstream equipment or systems of pneumatic conveying of solid granular materials.

[0003] To solve the problem of elbow wear, the main methods are as follows:

[0004] (1) Anti-wear ceramics on the inner wall of the elbow

[0005] This method is currently the most mainstream anti-wear technology, that is, a small piece of ceramic is fixed on the inner surface of the elbow by gluing, inlaying or welding inside the elbow. Because the ceramic surface is hard and smooth, it can achieve anti-wear and anti-blocking effects. In actual use, due to construction process problems, large areas of ceramics often fall off, causing serious wear on the outer side of the elbow bend. The large area of ​​ceramics that fall off will cause downstream pipeline blockage.

[0006] (2) Thickening of the outer wall of the elbow

[0007] This method is relatively simple, which is to increase the thickness of the elbow shell to extend the wear time of the elbow outer wall. Although this method can extend the wear time of the elbow, the thickened shell increases the total amount of the elbow.

[0008] Based on the above situation, there is an urgent need to find a solution to the problem of elbow wear during pneumatic conveying of solid particles. Summary of the invention

[0009] The embodiments of the present invention aim to solve at least one of the technical problems existing in the prior art and provide a pipe bending assembly.

[0010] An embodiment of the present invention provides a pipe bending assembly, the pipe bending assembly comprising:

[0011] A tube body, wherein the tube body has a main airflow area and a dynamic material storage area, the main airflow area is connected to the dynamic material storage area, the main airflow area is connected to the inlet and outlet of the tube body, the main airflow area is an arc-shaped cavity, the dynamic material storage area is located on the outer bend side of the main airflow area, and the dynamic material storage area is arranged corresponding to the inlet.

[0012] In some embodiments of the present invention, a cleaning structure is provided on the tube body, and the cleaning structure is provided on the outer curved side of the tube body, and the cleaning structure is used to clean the particles temporarily stored in the dynamic storage area.

[0013] In some embodiments of the present invention, the cleaning structure includes: a purge port, the purge port is arranged on the outer curved side of the tube body, and the purge port is connected to the dynamic material storage area.

[0014] In some embodiments of the present invention, the elbow assembly further includes a purge air duct, and the purge air duct is connected to the purge port.

[0015] In some embodiments of the present invention, a regulating valve is provided on the purge air duct.

[0016] In some embodiments of the present invention, the cleaning structure further includes a cleaning port, which is disposed on the outer curved side of the tube body and is communicated with the dynamic material storage area.

[0017] In some embodiments of the present invention, the cleaning port is provided with a detachable plug.

[0018] In some embodiments of the present invention, the purge port and the cleaning port are arranged at intervals on the outer curved side of the tube body.

[0019] In some embodiments of the present invention, the angle between the center line of the inlet and the center line of the outlet is 90 degrees.

[0020] In some embodiments of the present invention, the dynamic storage area is a spherical cavity or an ellipsoidal cavity.

[0021] The elbow assembly of the embodiment of the present invention includes a pipe body, and the pipe body has an inlet, an outlet, a main airflow area and a dynamic storage area, wherein the main airflow area is connected to the inlet and the outlet, and the main airflow area is used to transport the airflow containing solid particles at the inlet to the outlet. The main airflow area is connected to the dynamic storage area, and the dynamic storage area is arranged on the outer bend side of the main airflow area. The dynamic storage area is arranged corresponding to the inlet of the pipe body. When the airflow containing solid particles enters the pipe body from the inlet, the airflow containing solid particles enters the interior of the pipe body along the inlet of the pipe body. At the bend of the main airflow area, the solid particles are separated from the airflow by the centrifugal force. The solid particles enter the dynamic storage area at the outer bend of the main airflow area and fill the dynamic storage area to form a buffer layer of solid particles and reach a dynamic balance. As the airflow containing solid particles continues to enter the tube body, the solid particles that subsequently enter the tube body flow toward the dynamic storage area under the action of centrifugal force when the airflow reaches the turning point of the main airflow area. The solid particles collide with the buffer layer that has reached dynamic equilibrium in the dynamic storage area, thereby avoiding the solid particles from colliding with the inner wall of the outer curved side of the main airflow area, reducing the wear of the inner wall of the outer curved side of the tube body, and improving the wear resistance and service life of the bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a bending pipe assembly according to an embodiment of the present invention.

[0023] The reference numerals in the accompanying drawings represent the following:

[0024] 100. Bend pipe assembly;

[0025] 10. Tube body; 11. Main airflow area; 12. Dynamic storage area; 13. Inlet; 14. Outlet; 15. Purge port; 16. Cleaning port;

[0026] 21. Purge the air duct; 22. Adjust the valve; 23. Seal. DETAILED DESCRIPTION

[0027] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0028] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0029] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0030] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0031] like Figure 1As shown, an embodiment of the present invention provides a bend pipe assembly 100, which includes: a pipe body 10, the pipe body 10 has a main airflow area 11 and a dynamic material storage area 12, the main airflow area 11 is connected to the dynamic material storage area 12, the main airflow area 11 is connected to the inlet 13 and the outlet 14 of the pipe body 10, the main airflow area 11 is an arc-shaped cavity, the dynamic material storage area 12 is located on the outer bend side of the main airflow area 11, and the dynamic material storage area 12 is arranged corresponding to the inlet 13.

[0032] The elbow assembly 100 of the embodiment of the present invention comprises a pipe body 10, wherein the pipe body 10 has an inlet 13, an outlet 14, a main airflow area 11 and a dynamic storage area 12, wherein the main airflow area 11 is connected to the inlet 13 and the outlet 14, and the main airflow area 11 is used to transport the airflow containing solid particles at the inlet 13 to the outlet 14. The main airflow area 11 is connected to the dynamic storage area 12, and the dynamic storage area 12 is arranged on the outer bend side of the main airflow area 11, and the dynamic storage area 12 is arranged corresponding to the inlet 13 of the pipe body 10. When the airflow containing solid particles enters the pipe body 10 from the inlet 13, the airflow containing solid particles enters the inside of the pipe body 10 along the inlet 13 of the pipe body 10, and the solid particles are separated from the airflow by the centrifugal force at the bend of the main airflow area 11, and the solid particles enter the dynamic storage area 12 at the outer bend of the main airflow area 11, and fill the dynamic storage area 12, forming a buffer layer of solid particles, and reaching a dynamic balance. As the airflow containing solid particles continues to enter the tube body 10, the solid particles that subsequently enter the tube body 10 flow toward the dynamic storage area 12 under the action of centrifugal force when the airflow reaches the turning point of the main airflow area 11. The solid particles collide with the buffer layer that has reached dynamic equilibrium in the dynamic storage area 12, thereby avoiding the solid particles from colliding with the inner wall of the outer curved side of the main airflow area 11, reducing the wear of the inner wall of the outer curved side of the tube body 10, and improving the wear resistance and service life of the bent pipe.

[0033] In some embodiments of the present invention, a cleaning structure is provided on the tube body 10, and the cleaning structure is provided on the outer curved side of the tube body 10, and the cleaning structure is used to clean the particles temporarily stored in the dynamic storage area 12. After the solid particles form a dynamic equilibrium in the dynamic storage area 12 in the tube body 10, they will gradually harden and agglomerate. As the solid particles gradually accumulate, the buffer layer formed by the solid particles becomes more and more backward, and gradually extends to the main airflow area 11, thereby affecting the normal flow of gas in the main airflow area 11. In order to prevent the main airflow area 11 of the tube body 10 from being blocked by solid particles, a cleaning structure is provided on the outer curved side of the tube body 10, and the dynamic storage area 12 is cleaned by the cleaning structure to ensure that the airflow containing solid particles flows normally in the main airflow area 11.

[0034] In some embodiments of the present invention, the cleaning structure includes: a purge port 15, the purge port 15 is arranged on the outer curved side of the tube body 10, and the purge port 15 is connected to the dynamic storage area 12. Purge gas can be introduced into the dynamic storage area 12 through the purge port 15 to disperse the solid particles accumulated in the dynamic storage area 12, so as to achieve the purpose of cleaning the dynamic storage area 12 and prevent the buffer layer formed by the accumulated solid particles from affecting the normal flow of gas in the main airflow area 11. Specifically, when the airflow containing solid particles passes through the tube body 10, the buffer layer accumulated in the dynamic storage area 12 can be cleaned through the purge port 15, and the dynamic storage area 12 can also be cleaned through the purge port 15 when the bend pipe stops feeding.

[0035] Furthermore, the purge port 15 is arranged corresponding to the wall of the dynamic stock storage area 12 to ensure that the purge gas is blown directly onto the wall of the dynamic stock storage area 12 through the purge port 15 to clean up the solid particles accumulated on the wall of the dynamic stock storage area 12.

[0036] In some embodiments of the present invention, the elbow assembly 100 further includes a purge duct 21, which is disposed on the pipe body 10 and communicates with the purge port 15. Specifically, the purge duct 21 can be connected to one end of the purge port 15 away from the dynamic storage area 12, and part of the purge duct 21 can also extend into the purge port 15 to ensure the reliability of the connection between the purge duct 21 and the pipe body 10. The purge gas enters the purge port 15 through the purge duct 21, and then enters the dynamic storage area 12 through the purge port 15 to disperse the solid particles accumulated in the dynamic storage area 12.

[0037] In some embodiments of the present invention, a regulating valve 22 is provided on the purge air duct 21, and the regulating valve 22 is used to adjust the flow of the purge air duct 21, and control the flow of the purge gas entering the dynamic stock storage area 12 through the purge port 15 according to the thickness or hardness of the buffer layer of solid particles accumulated in the dynamic stock storage area 12. At the same time, the regulating valve 22 can start the purge gas to purge the dynamic stock storage area 12, and can also close the purge gas to purge the dynamic stock storage area 12.

[0038] In some embodiments of the present invention, the cleaning structure further includes a cleaning port 16, which is disposed on the outer curved side of the tube body 10, and the cleaning port 16 is connected to the dynamic storage area 12. When the thickness or hardness of the solid particle buffer layer in the dynamic storage area 12 is too large, it is difficult to clean the buffer layer only by the purge gas introduced through the purge port 15, and therefore, an external tool is extended into the dynamic storage area 12 through the cleaning port 16 to clean the buffer layer formed by the solid particles in the dynamic storage area 12, so as to ensure that no blockage occurs in the tube body 10. Specifically, when the external tool cleans the buffer layer through the cleaning port 16, the tube body 10 stops feeding to prevent the airflow containing solid particles from leaking from the cleaning port 16.

[0039] In some embodiments of the present invention, the cleaning port 16 is provided with a detachable plug 23 to prevent leakage of the cleaning port 16 when the pipe body 10 is fed. When the dynamic material storage area 12 needs to be cleaned through the cleaning port 16, the pipe body 10 stops feeding, then opens the plug 23, and extends the cleaning tool through the cleaning port 16 into the dynamic material storage area 12 to clean the dynamic material storage area 12; when the dynamic material storage area 12 is cleaned, the cleaning tool is taken out of the dynamic material storage area 12, and then the plug 23 is used to block the cleaning port 16.

[0040] Furthermore, the plug 23 is threadedly connected to the cleaning port 16, the plug 23 is provided with an external thread, and the cleaning port 16 is provided with an internal thread, and the plug 23 is installed and removed by the cooperation of the external thread and the internal thread. In other embodiments of the present disclosure, the plug 23 and the cleaning port 16 can also be connected by a snap connection, a pin connection or other detachable connection.

[0041] In some embodiments of the present invention, the purge port 15 and the cleaning port 16 are arranged at intervals on the outer curved side of the tube body 10 to ensure that the purge port 15 and the cleaning port 16 do not affect each other during operation.

[0042] In some embodiments of the present invention, the center line of the inlet 13 and the center line of the outlet 14 are at an angle of 90 degrees, that is, the inlet 13 and the outlet 14 of the tube body 10 are at a right angle. Both the inlet 13 and the outlet 14 are cylindrical cavities, and the diameter of the inlet 13 is the same as the diameter of the outlet 14.

[0043] In some embodiments of the present invention, the dynamic storage area 12 is a spherical cavity or an ellipsoidal cavity, that is, the dynamic storage area 12 is a circular cross-section or an elliptical cross-section on the cross-section formed along the center line of the inlet 13 and the center line of the outlet 14 to ensure that the solid particles can form a dynamic balance in the dynamic storage area 12. At the same time, the circular cross-section or the elliptical cross-section is easy to clean.

[0044] Operation process of the pipe bending assembly 100:

[0045] 1. Open the regulating valve 22, and the compressed gas enters the purge port 15 through the purge air pipe 21, and enters the dynamic storage area 12 of the pipe body 10 through the purge port 15 to purge the solid particles in the dynamic storage area 12;

[0046] 2. After purging for 3 to 5 minutes, close the regulating valve 22 to stop purging the dynamic storage area 12;

[0047] 3. Control the feeding of the elbow assembly 100, and the gas containing solid particles enters the tube body 10 through the inlet 13, flows through the main air flow area 11, and flows out from the outlet 14;

[0048] 4. During the feeding process, the dynamic storage area 12 of the elbow assembly 100 is purged again according to steps 1 and 2;

[0049] 5. When solid particles clog the elbow assembly 100, the dynamic stock area 12 is purged through steps 1 and 2. If the dynamic stock area 12 is not cleaned, stop feeding the elbow assembly 100, then close the regulating valve 22, open the plug 23, and extend the cleaning tool from the cleaning port 16 into the dynamic stock area 12 to clean the dynamic stock area 12 with the cleaning tool.

[0050] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A pipe bending assembly, characterized in that: The elbow assembly comprises: A tube body, wherein the tube body has a main airflow area and a dynamic material storage area, the main airflow area is connected to the dynamic material storage area, the main airflow area is connected to the inlet and outlet of the tube body, the main airflow area is an arc-shaped cavity, the dynamic material storage area is located on the outer bend side of the main airflow area, and the dynamic material storage area is arranged corresponding to the inlet.

2. The elbow assembly according to claim 1, characterized in that: The tube body is provided with a cleaning structure, which is arranged on the outer curved side of the tube body and is used for cleaning particles temporarily stored in the dynamic material storage area.

3. The elbow assembly according to claim 2, characterized in that: The cleaning structure comprises: a purge port, which is arranged on the outer curved side of the tube body and is communicated with the dynamic material storage area.

4. The elbow assembly according to claim 3, characterized in that: The elbow assembly also includes a purge air duct, which is connected to the purge port.

5. The elbow assembly according to claim 4, characterized in that: The purge air duct is provided with a regulating valve.

6. The elbow assembly according to claim 3, characterized in that: The cleaning structure also includes a cleaning port, which is arranged on the outer curved side of the tube body and is communicated with the dynamic material storage area.

7. The elbow assembly according to claim 6, characterized in that: The cleaning port is provided with a detachable plug.

8. The elbow assembly according to claim 6, characterized in that: The purge port and the cleaning port are arranged at intervals on the outer curved side of the tube body.

9. The elbow assembly according to claim 1, characterized in that: The included angle between the center line of the inlet and the center line of the outlet is 90 degrees.

10. The elbow assembly according to any one of claims 1 to 9, characterized in that: The dynamic material storage area is a spherical cavity or an ellipsoidal cavity.

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