Abrasion-resistant and wear-resistant elbow for pneumatic conveying

Abstract

The utility model discloses a wear-resistant elbow for pneumatic conveying, which relates to the technical field of conveying systems and comprises an elbow main body, a wear-resistant elbow body and a wear-resistant elbow body. The welding sections are welded and fixed at the opening positions at the two ends of the elbow main body; the outlet wear-resistant straight pipe section is constructed between an outlet of the elbow main body and the welding section, the curvature radius R of the elbow main body is greater than or equal to 5D, the length of the outlet wear-resistant straight pipe section is 5-10D, the length of the outlet wear-resistant straight pipe section is about 500mm, and the positions where the welding section and the outlet wear-resistant straight pipe section are connected with the elbow main body are tangent to each other. According to the utility model, the outlet wear-resistant straight pipe section with the length of about 500mm is constructed at the outlet position of the elbow, so that air flow can be well subjected to adaptive movement and buffering at the outlet wear-resistant straight pipe section to reduce the impact strength, and the wear-resistant elbow has the advantages that the wear-resistant straight pipe section with the length of about 500mm is arranged at the outlet position of the elbow; and the service lives of the elbow and the straight pipe section can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying systems, in particular to an abrasion-proof and wear-resistant elbow for pneumatic conveying. Background Technique

[0002] Pneumatic conveying is a conveying method that uses high-speed air flow to convey powder and granular materials in pipelines, and is widely used in industries such as casting, chemical industry, medicine, and grain. An elbow is a commonly used connecting fitting in pipeline installation, which connects two pipes with the same or different nominal diameters, making the pipeline turn at a certain angle, and is a fitting for changing the conveying direction.

[0003] Referring to the existing patent publication number: CN207844477U, an elbow device suitable for pneumatic conveying, including a feed pipe, one end of the feed pipe is fixedly provided with an installation flange, the other end of the feed pipe is fixedly connected to one end of a universal pipe through a connecting flange, the other end of the connecting flange is connected to the feed port of a spherical elbow, and the discharge port of the spherical elbow is communicated with one end of another universal pipe. By providing a universal pipe in the present utility model, during the installation of the spherical elbow, the angle at the connection can be adjusted according to the installation position required, avoiding bending the pipeline for installation. By providing a reinforcement layer, the spherical elbow is reinforced and protected.

[0004] However, generally, the part of the elbow near the outer side in the middle is subjected to the greatest impact, and the position where the elbow outlet is connected to the ordinary pipeline often wears out. This is because after the ash-gas mixture in the pipeline turns through the elbow, the original flow state is changed, and the axial movement in the original straight pipe section becomes a turbulent flow state with both axial and radial directions. The outlet of the conventional wear-resistant elbow is short, and the connection between the elbow and the ash pipe is prone to wear out, thus affecting the service life of the elbow and the transportation of materials. Content of the Utility Model

[0005] The purpose of the present utility model is to solve the shortcomings existing in the prior art, and to propose an abrasion-proof and wear-resistant elbow for pneumatic conveying. By constructing an outlet wear-resistant straight pipe section with a length of about 500 mm at the outlet position of the elbow in the present utility model, the air flow can be better adapted and buffered at the position of the outlet wear-resistant straight pipe section, so as to reduce the impact strength and help increase the service life of the elbow and the straight pipe section.

[0006] In order to achieve the above purpose, the present utility model adopts the following technical scheme:

[0007] An abrasion-proof and wear-resistant elbow for pneumatic conveying, including:

[0008] An elbow main body, which is constructed in an arc shape;

[0009] A welding section, which is welded and fixed at the opening positions at both ends of the elbow main body;

[0010] The wear-resistant straight pipe section at the outlet is constructed between the outlet of the elbow body and the welding section.

[0011] The present utility model is further configured such that the radius of curvature of the elbow body is R≥5D.

[0012] The present utility model is further configured such that the length of the wear-resistant straight pipe section at the outlet is between 5 - 10D.

[0013] The present utility model is further configured such that the length of the wear-resistant straight pipe section at the outlet is approximately 500 mm.

[0014] The present utility model is further configured such that the positions where the welding section and the wear-resistant straight pipe section at the outlet are connected to the elbow body are both tangentially arranged.

[0015] The present utility model is further configured such that the length of the wear-resistant straight pipe section at the outlet is greater than the length of the welding section.

[0016] The present utility model is further configured such that a buffer baffle is installed inside the elbow body and is inclined along the direction of the wear-resistant straight pipe section at the outlet.

[0017] The beneficial effect of the present utility model is as follows: By constructing a wear-resistant straight pipe section at the outlet of the elbow with a length of approximately 500 mm, the present utility model enables the air flow to better adapt and buffer at the position of the wear-resistant straight pipe section at the outlet, thereby reducing the impact intensity and contributing to increasing the service life of the elbow and the straight pipe section.

[0018] 1. For the abrasion-resistant and wear-resistant elbow for pneumatic conveying, by providing a wear-resistant straight pipe section at the outlet, a wear-resistant straight pipe section with a length of approximately 500 mm is constructed at the outlet of the elbow to increase the extension length at the outlet of the elbow, enabling the air flow to better adapt and buffer at the position of the wear-resistant straight pipe section at the outlet, thereby reducing the impact intensity and contributing to increasing the service life of the elbow and the straight pipe section.

[0019] 2. For the abrasion-resistant and wear-resistant elbow for pneumatic conveying, by providing a buffer baffle, when the air flow flows inside the elbow, it can be guided and adjusted to a certain extent under the action of the inclined buffer baffle to reduce the direct acting force of the air flow on the elbow, and under the action of the buffer baffle, the air flow can also better flow out from the outlet position and reduce the acting intensity on the wear-resistant straight pipe section at the outlet, improving the protection performance. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the first overall structure of an abrasion-resistant and wear-resistant elbow for pneumatic conveying proposed by the present utility model;

[0021] Figure 2The second overall structural schematic diagram of an abrasion-proof and wear-resistant elbow for pneumatic conveying proposed by the present utility model;

[0022] Figure 3 The front sectional structural schematic diagram of an abrasion-proof and wear-resistant elbow for pneumatic conveying proposed by the present utility model.

[0023] In the figure: 1, elbow main body; 2, welding section; 3, outlet wear-resistant straight pipe section; 4, buffer baffle. Specific embodiments

[0024] The technical solutions of this patent will be further described in detail below in conjunction with specific embodiments.

[0025] The embodiments of this patent will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation of this patent.

[0026] In the description of this patent, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying 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 construed as a limitation of this patent.

[0027] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] Refer to Figures 1 - 3, An abrasion-resistant and wear-resistant elbow for pneumatic conveying, comprising: an elbow body 1, which is configured to be arc-shaped. Compared with traditional elbows, the arc-shaped design can more smoothly guide the material flow when the airflow turns, reduce the impact and friction caused by sharp turns, reduce the accumulation and wear of materials at the turning point, and improve the smoothness and efficiency of pneumatic conveying; a welding section 2, which is welded and fixed at the opening positions at both ends of the elbow body 1, so that the elbow body 1 is connected and installed to the pneumatic conveying system through the welding section 2. Moreover, the welding method not only enhances the overall strength of the elbow, but also ensures that the elbow will not loosen or fall off during high-pressure and high-speed pneumatic conveying, improving the safety and reliability of the system; an outlet wear-resistant straight pipe section 3, which is configured between the outlet of the elbow body 1 and the welding section 2. A wear-resistant straight pipe section is added at the outlet of the elbow body 1. This straight pipe is usually made of high-wear-resistant materials such as ceramics and alloy steel, directly bearing the impact and friction when the material flows out of the elbow, effectively extending the service life of the elbow. The design of the straight pipe section also helps to further stabilize the material flow, reduce turbulence and eddy currents, and improve the conveying efficiency.

[0029] Further, the curvature radius of the elbow body 1 is R≥5D (where D represents the diameter in decimeters). Through this design, the larger curvature radius helps the fluid maintain a relatively stable flow state during the turning process, reduce the eddy currents and turbulence generated by sharp turns, thereby reducing the fluid resistance. The larger curvature radius can disperse the impact energy of the material on the inner wall of the elbow at the turning point, reduce local wear, and thus extend the service life of the elbow.

[0030] Further, the length of the outlet wear-resistant straight pipe section 3 is between 5-10D. Through this design, when the material leaves the elbow body 1 and enters the straight pipe section, its impact energy will be dispersed and buffered to a certain extent within the straight pipe section. The appropriate length of the wear-resistant straight pipe section can more effectively absorb this impact energy, reduce the wear on the inner wall of the pipe, and the 5-10D straight pipe section length helps to stabilize the flow state of the material in the pipe and reduce the eddy currents and turbulence generated by unstable flow.

[0031] Further, the length of the outlet wear-resistant straight pipe section 3 is about 500mm. Through this design, the 500mm length is a relatively standard size, providing sufficient buffer space for the flow of the material after leaving the elbow, effectively dispersing the impact energy of the material on the inner wall of the pipe, thereby significantly improving the wear-resistant performance, which is a better length for the application of the outlet wear-resistant straight pipe section 3.

[0032] Furthermore, the connection positions of the welding section 2 and the outlet wear-resistant straight pipe section 3 with the elbow body 1 are both tangentially arranged. Through this design, the tangential arrangement enables the material to transition more smoothly when flowing through the welding section 2 and the wear-resistant straight pipe section, reducing the eddy currents and turbulences generated by sharp turns, and enabling the impact energy to be more effectively dispersed, thereby reducing the local wear on the inner wall of the pipe and improving the wear resistance.

[0033] Furthermore, the length of the outlet wear-resistant straight pipe section 3 is greater than that of the welding section 2. Through this design, as the main area where the material is directly impacted and worn, the longer length of the wear-resistant straight pipe section means that there is more space for the material to flow and disperse after leaving the elbow body, thereby reducing the local wear on the inner wall of the pipe. Since the wear-resistant straight pipe section is longer, the flow time of the material in it is also relatively longer, which enables the impact energy of the material on the inner wall of the pipe to be more effectively dispersed and absorbed.

[0034] Furthermore, a buffer baffle 4 is installed inside the elbow body 1 and is inclined along the direction of the outlet wear-resistant straight pipe section 3. Through this design, when the air flow flows inside the elbow, it can be guided and adjusted to a certain extent under the action of the inclined buffer baffle 4 to reduce the direct force of the air flow on the elbow. And under the action of the buffer baffle 4, the air flow can also flow out from the outlet position better and reduce the acting intensity on the outlet wear-resistant straight pipe section 3, improving the protection performance. Furthermore, the buffer baffle 4 can be movably connected inside the elbow body 1 through the cooperation of a rotating part and an elastic part, so that when the air flow impacts the buffer baffle 4, the buffer baffle 4 can perform good elastic activities and absorb the impact force to adjust the conveying impact angle, and can reset and perform elastic buffering, improving the flexibility.

[0035] Working principle: When using the present utility model, first connect the elbow to the pneumatic conveying system. At the outlet position of the elbow, there is an outlet wear-resistant straight pipe section 3 with a length of about 500 mm to increase the extension length at the outlet position of the elbow, enabling the air flow to adapt and buffer well at the position of the outlet wear-resistant straight pipe section 3 when flowing inside the elbow, so as to reduce the impact intensity, which helps to increase the service life of the elbow and the straight pipe section. And when the air flow flows inside the elbow, it can be guided and adjusted to a certain extent under the action of the inclined buffer baffle 4 to reduce the direct force of the air flow on the elbow. And under the action of the buffer baffle 4, the air flow can also flow out from the outlet position better and reduce the acting intensity on the outlet wear-resistant straight pipe section 3, improving the protection performance.

[0036] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. An anti-wear and abrasion-resistant elbow for pneumatic conveying, characterized in that, Comprising: An elbow main body (1), which is configured to be arc-shaped; Welding sections (2), which are welded and fixed at the open positions at both ends of the elbow main body (1); An outlet wear-resistant straight pipe section (3), which is configured between the outlet of the elbow main body (1) and the welding section (2).

2. The anti-wear and abrasion-resistant elbow for pneumatic conveying according to claim 1, wherein, The radius of curvature of the elbow main body (1) is R≥5D.

3. The anti-wear and abrasion-resistant elbow for pneumatic conveying according to claim 1, characterized in that The length of the outlet wear-resistant straight pipe section (3) is between 5-10D.

4. The anti-wear and abrasion-resistant elbow for pneumatic conveying according to claim 3, wherein, The length of the outlet wear-resistant straight pipe section (3) is about 500 mm.

5. The anti-wear and abrasion-resistant elbow for pneumatic conveying according to claim 1, characterized in that, The positions where the welding section (2) and the outlet wear-resistant straight pipe section (3) are connected to the elbow main body (1) are all tangent.

6. The abrasion-proof and wear-resistant elbow for pneumatic conveying according to claim 1, wherein The length of the outlet wear-resistant straight pipe section (3) is greater than the length of the welding section (2).

7. The abrasion-proof and wear-resistant elbow for pneumatic conveying according to claim 1, characterized in that, A buffer baffle (4) is installed inside the elbow main body (1) and is inclined along the direction of the outlet wear-resistant straight pipe section (3).

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