Anti-abrasion elbow

Abstract

The utility model relates to the technical field of elbows, in particular to an anti-abrasion elbow which comprises an elbow body, an arc-shaped cover is assembled on the periphery of the elbow body, an arc-shaped plate used for buffering is installed on the face, located on the inner side of the elbow body, of the arc-shaped cover in a sliding mode, and a piston strip is assembled on the surface of the outer wall of the arc-shaped plate. When the bent pipe body used in the pulverized coal processing process is used by a boiler, the arc-shaped plate on the bent section of the inner circumference of the bent pipe body can conveniently buffer pulverized coal fluid entering the bent pipe, and buffering is conducted through the air pressure strength between the arc-shaped cover and the arc-shaped plate; meanwhile, a piston strip on the outer periphery of the arc-shaped plate and a piston seat on the inner periphery of the arc-shaped cover are matched with each other and slide, so that pressure can be formed between the arc-shaped plate and the arc-shaped cover, buffering force is conveniently provided for the arc-shaped plate, and a certain buffering effect is conveniently provided while wear resistance is achieved in cooperation with a downstream anti-wear piece arranged on the inner periphery of the arc-shaped plate; and the bent pipe can be used more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of elbows, and particularly relates to an anti-wear elbow. Background Art

[0002] In a pipeline system, an elbow is a pipe fitting for changing the direction of a pipeline. Classified by angle, the two most commonly used ones are 45° and 90°, and in addition, other non-standard angle elbows such as 60° are also included according to engineering needs. The materials of elbows include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, plastics, etc. An elbow is divided into an inlet section, a bent section, and an outlet section. When fluid passes through an elbow, due to the action of centrifugal inertial force, the inner wall of the outer side of the bent section is subjected to a greater force than the inner wall of the inner side, and is also more severely worn by hard particles. Therefore, in engineering, the outer side of the bent section of an elbow is often more likely to be worn out first than the inner side, resulting in powder leakage. Once the outer side is worn out first, the entire elbow needs to be replaced, causing waste; Patent No. CN201220193357.2 discloses an anti-wear elbow, which adds a flow-aligned anti-wear sheet on the inner wall of the outer side of the bent section of the elbow, not only enhancing the anti-wear and abrasion resistance performance of the inner wall of the outer side of the elbow, extending the service life of the elbow, but also not increasing the resistance of the fluid in the bent part of the elbow and not affecting the flow rate of the fluid; however, in the process of using a boiler to produce pulverized coal, since the pulverized coal fluid entering the inner side of the elbow directly impacts the anti-wear sheet with a relatively large impact force, the continuous impact force will cause a certain impact on the elbow itself. For this reason, we propose an anti-wear elbow. Content of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides an anti-wear elbow.

[0004] The technical solution adopted by the utility model to solve its technical problems is an anti-wear elbow, which includes a bent pipe body. An arc-shaped cover is assembled on the outer periphery of the bent pipe body, and an arc-shaped plate for buffering is slidably installed on the side of the arc-shaped cover located inside the bent pipe body. A piston strip is assembled on the outer wall surface of the arc-shaped plate, and a piston seat that fits with the piston strip is assembled on the inner periphery of the arc-shaped cover. An air bag body is assembled between the arc-shaped plate and the arc-shaped cover.

[0005] By adopting the above technical solution, when using the elbow body in the process of pulverized coal processing by a boiler, the arc-shaped plate on the inner circumferential bent section of the elbow body facilitates buffering the pulverized coal fluid entering the elbow, and utilizes the air pressure intensity between the arc-shaped cover and the arc-shaped plate for buffering. At the same time, the piston strip on the outer circumference of the arc-shaped plate and the piston seat on the inner circumference of the arc-shaped cover fit and slide with each other, enabling a pressure to be formed between the arc-shaped plate and the arc-shaped cover, facilitating providing a buffering force for the arc-shaped plate, and cooperating with the flow-aligned anti-wear sheets provided on the inner circumference of the arc-shaped plate, facilitating providing a certain buffering effect while being wear-resistant, enabling the elbow to be used more stably. And when the arc-shaped plate buffers by using the pressure between the arc-shaped cover and the arc-shaped plate, the airbag body between the arc-shaped plate and the arc-shaped cover can assist in buffering, facilitating improving the buffering effect of the arc-shaped plate.

[0006] Specifically, a plurality of ear seats are rotatably installed on the surface of the side of the arc-shaped plate located inside the arc-shaped cover, and there are multiple groups of ear seats. A cushion seat corresponding to the ear seat is assembled on the inner wall surface of the arc-shaped cover, and there are multiple groups of cushion seats. A spring is assembled between the cushion seat and the ear seat.

[0007] By adopting the above technical solution, the ear seat and the cushion seat cooperate with each other to support the spring, enabling the spring to support the arc-shaped plate sliding on the inner circumference of the arc-shaped cover, enabling the arc-shaped plate to stably slide and displace on the inner circumference of the arc-shaped cover, thereby improving the stability of the arc-shaped plate during buffering.

[0008] Specifically, a shock-absorbing cylinder located inside the spring is hinged between the cushion seat and the ear seat.

[0009] By adopting the above technical solution, the shock-absorbing cylinder can be used in cooperation with the spring, enabling the spring to more stably provide elastic force for the arc-shaped plate and enabling the arc-shaped plate to stably return to its position after buffering.

[0010] Specifically, a wear-resistant silicon carbide layer is integrally formed on the inner wall surface of the elbow body.

[0011] By adopting the above technical solution, the wear-resistant silicon carbide layer needs to be sintered at a high temperature of over 1470 °C, enabling the elbow body to not only have good wear resistance but also good high-temperature resistance, enabling the elbow body to be used more stably.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The technical solution of this application, through the design of the arc-shaped cover, arc-shaped plate, piston strip and piston seat, when using the elbow body in the process of processing pulverized coal with a boiler, the arc-shaped plate on the inner circumferential bend section of the elbow body facilitates buffering the pulverized coal fluid entering the elbow, and uses the air pressure strength between the arc-shaped cover and the arc-shaped plate for buffering. At the same time, the piston strip on the outer circumference of the arc-shaped plate fits and slides with the piston seat on the inner circumference of the arc-shaped cover, so that a pressure can be formed between the arc-shaped plate and the arc-shaped cover, which is convenient to provide a buffering force for the arc-shaped plate, and cooperate with the flow-aligned anti-wear pieces set on the inner circumference of the arc-shaped plate, which is convenient to provide a certain buffering effect while being wear-resistant, so that the elbow can be used more stably.

[0014] 2. Through the design of the airbag body, ear seat, cushion seat and spring, when the arc-shaped plate buffers using the pressure between the arc-shaped cover and the arc-shaped plate, the airbag body between the arc-shaped plate and the arc-shaped cover can assist in buffering, which is convenient to improve the buffering effect of the arc-shaped plate, and the ear seat and the cushion seat cooperate with each other to support the spring, so that the spring can support the arc-shaped plate sliding on the inner circumference of the arc-shaped cover, so that the arc-shaped plate can stably slide and displace on the inner circumference of the arc-shaped cover, thereby improving the stability when the arc-shaped plate buffers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further describes the present invention in conjunction with the drawings and embodiments.

[0016] Figure 1 is an axonometric view of the present invention;

[0017] Figure 2 is a cross-sectional schematic view of the connection structure between the elbow body and the arc-shaped cover of the present invention;

[0018] Figure 3 is a schematic view of the structure at position A on the inner side of the elbow body of the present invention;

[0019] In the figure: 1. Elbow body; 2. Arc-shaped cover; 3. Arc-shaped plate; 4. Piston strip; 5. Piston seat; 6. Airbag body; 9. Cushion seat; 10. Ear seat; 11. Spring; 12. Shock-absorbing cylinder; 13. Wear-resistant silicon carbide layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1-3, an embodiment of the present utility model provides a technical solution: an anti-wear elbow, including an elbow body 1, an arc-shaped cover 2 is assembled on the outer periphery of the elbow body 1, and an arc-shaped plate 3 for buffering is slidably installed on the inner side of the arc-shaped cover 2 facing the elbow body 1. A piston strip 4 is assembled on the outer wall surface of the arc-shaped plate 3, and a piston seat 5 that fits with the piston strip 4 is assembled on the inner periphery of the arc-shaped cover 2. An airbag body 6 is assembled between the arc-shaped plate 3 and the arc-shaped cover 2.

[0022] During use, when the elbow body 1 used in the process of processing pulverized coal by a boiler is in use, the arc-shaped plate 3 at the curved section of the inner periphery of the elbow body 1 is convenient for buffering the pulverized coal fluid entering the elbow, and the air pressure strength between the arc-shaped cover 2 and the arc-shaped plate 3 is used for buffering. At the same time, the piston strip 4 on the outer periphery of the arc-shaped plate 3 and the piston seat 5 on the inner periphery of the arc-shaped cover 2 fit and slide with each other, so that a pressure can be formed between the arc-shaped plate 3 and the arc-shaped cover 2, which is convenient for providing a buffering force for the arc-shaped plate 3, and in cooperation with the flow-aligned anti-wear sheets provided on the inner periphery of the arc-shaped plate 3, it is convenient to provide a certain buffering effect while being wear-resistant, so that the elbow can be used more stably. And when the arc-shaped plate 3 buffers by using the pressure between the arc-shaped cover 2 and the arc-shaped plate 3, the airbag body 6 between the arc-shaped plate 3 and the arc-shaped cover 2 can assist in buffering, which is convenient for improving the buffering effect of the arc-shaped plate 3.

[0023] As Figure 2 and Figure 3 shown, a plurality of ear seats 10 are rotatably installed on the inner side of the arc-shaped plate 3 facing the arc-shaped cover 2, and there are multiple groups of ear seats 10. A plurality of cushion seats 9 corresponding to the ear seats 10 are assembled on the inner wall surface of the arc-shaped cover 2, and a spring 11 is assembled between the cushion seat 9 and the ear seat 10.

[0024] During use, the ear seat 10 and the cushion seat 9 cooperate with each other to support the spring 11, so that the spring 11 can support the arc-shaped plate 3 sliding on the inner periphery of the arc-shaped cover 2, so that the arc-shaped plate 3 can stably slide and displace on the inner periphery of the arc-shaped cover 2, thereby improving the stability of the arc-shaped plate 3 during buffering.

[0025] As Figure 2 and Figure 3 shown, a shock-absorbing cylinder 12 located inside the spring 11 is hinged between the cushion seat 9 and the ear seat 10.

[0026] During use, the shock-absorbing cylinder 12 can cooperate with the spring 11, so that the spring 11 can more stably provide elastic force for the arc-shaped plate 3, and enable the arc-shaped plate 3 to return stably after buffering.

[0027] As Figure 2 shown, a wear-resistant silicon carbide layer 13 is integrally formed on the inner wall surface of the elbow body 1.

[0028] During use, the wear-resistant silicon carbide layer 13 needs to be sintered at a high temperature above 1470°C, so that the elbow body 1 not only has good wear resistance but also good high-temperature resistance, enabling the elbow body 1 to be used more stably.

[0029] The working principle and usage process of the present utility model: During use, first install the corresponding structural components in appropriate positions. When using the elbow body 1 in the process of processing pulverized coal by a boiler, the arc-shaped plate 3 in the inner circumferential bend section of the elbow body 1 facilitates buffering the pulverized coal fluid entering the elbow, and utilizes the air pressure strength between the arc-shaped cover 2 and the arc-shaped plate 3 for buffering. At the same time, the piston strip 4 on the outer circumference of the arc-shaped plate 3 and the piston seat 5 on the inner circumference of the arc-shaped cover 2 fit and slide with each other, enabling a pressure to be formed between the arc-shaped plate 3 and the arc-shaped cover 2, facilitating providing a buffering force for the arc-shaped plate 3, and cooperating with the flow-aligned anti-wear sheets provided on the inner circumference of the arc-shaped plate 3, facilitating providing a certain buffering effect while being wear-resistant, enabling the elbow to be used more stably and buffering the pulverized coal fluid more stably. Moreover, the spring 11 and the shock-absorbing cylinder 12 between the arc-shaped plate 3 and the arc-shaped cover 2 can be used in cooperation, and together with the airbag body 6, it is convenient to assist the arc-shaped plate 3 in buffering, thereby improving the buffering effect of the arc-shaped plate 3. At the same time, when the arc-shaped plate 3 buffers using the pressure between the arc-shaped cover 2 and the arc-shaped plate 3, the airbag body 6 between the arc-shaped plate 3 and the arc-shaped cover 2 can assist in buffering, facilitating improving the buffering effect of the arc-shaped plate 3, and increasing the service life of the elbow.

[0030] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above-described embodiments and descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope claimed by the present utility model. The scope claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant elbow, characterized in that: The invention comprises a curved tube body (1), the outer periphery of which is provided with an arc-shaped cover (2), and a curved plate (3) for buffering is slidably mounted on one side of the curved cover (2) located inside the curved tube body (1), a piston strip (4) is mounted on the outer wall surface of the curved plate (3), and a piston seat (5) matched with the piston strip (4) is mounted on the inner periphery of the curved cover (2), and an air bag body (6) is mounted between the curved plate (3) and the curved cover (2).

2. The anti-wear elbow according to claim 1, characterized in that: The arc plate (3) is rotatably mounted with an ear seat (10) on one side located inside the arc cover (2), and the ear seat (10) is provided in multiple groups. The inner wall surface of the arc cover (2) is equipped with a pad seat (9) corresponding to the ear seat (10), and the pad seat (9) is provided in multiple groups. A spring (11) is installed between the pad seat (9) and the ear seat (10).

3. The anti-wear elbow according to claim 2, characterized in that: A shock-absorbing cylinder (12) located on the inner periphery of the spring (11) is hingedly connected between the cushion seat (9) and the ear seat (10).

4. The anti-wear elbow according to claim 1, characterized in that: The inner wall surface of the curved pipe body (1) is integrally formed with a wear-resistant silicon carbide layer (13).

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