Dust transportation corrugated pipe

Abstract

The utility model relates to a dust transportation corrugated pipe which comprises a corrugated pipe body, two ends of the corrugated pipe body are respectively connected with a fixed flange, a variable-diameter flow guide pipe is arranged in the corrugated pipe body, and the outer wall of the large-diameter end of the variable-diameter flow guide pipe is connected with one of the fixed flanges in a sealing mode. The small-diameter end of the variable-diameter flow guide pipe extends into the other fixing flange, and a gap is reserved between the small-diameter end of the variable-diameter flow guide pipe and the inner wall of the other fixing flange. The corrugated pipe has the advantages that the reducing flow guide pipes with different calibers at the two ends are utilized, the defect that dust leaks and deposits when the corrugated pipe is transported can be perfectly overcome, meanwhile, the gap reserved at the small-diameter end can play a role in damping and vibration absorption, noise is lowered, and the influence on other components is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of corrugated pipes, in particular to a dust transporting corrugated pipe. Background Art

[0002] Bellows is a pipe material used to transport gas, liquid or other fluids. It consists of a series of corrugated metal or non-metallic shells. Bellows has the characteristics of bending, flexibility and compressibility, and can adapt to different structural and shape requirements. Therefore, it is widely used in many industrial fields, such as machinery, aviation, chemical industry, light industry, medical treatment and construction. In addition, bellows also have the characteristics of vibration absorption, vibration isolation and buffering, which effectively control the key parameters such as pressure, flow and vibration in the fluid pipeline system.

[0003] Patent CN113648771A discloses a dust trapezoidal collection device based on a dust removal system and a method of using the same, which relates to the field of metallurgical environmental protection technology. The dust trapezoidal collection device based on a dust removal system includes an ash placing room and a flue gas duct, wherein a trapezoidal collection hood is fixedly connected to the top edge of the ash placing room, a bellows compensator is fixedly connected to the top of the trapezoidal collection hood, an electric control valve is fixedly connected to the top of the bellows compensator, a dust suction duct is fixedly connected to the top of the electric control valve, an elbow is fixedly connected to the top of the elbow, a short pipe is fixedly connected to the top of the short pipe, and the top of the short pipe is fixedly connected to one side of the flue gas duct. By installing a trapezoidal collection hood on the top of the vehicle entrance door of the ash placing room, the floating dust can be effectively blocked, dust can be effectively prevented from spilling out, on-site environmental pollution can be eliminated, the surrounding air quality can be improved, and the phenomenon of unorganized dust during ash placing can be completely solved.

[0004] In the above patent, when the bellows used to transport dust is in use, due to its internal unevenness, dust is easily deposited in the bellows when flowing in the tube, causing blockage of the device, which greatly reduces the stability of the equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a dust transport bellows that can solve the above technical problems.

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

[0007] A dust transport bellows comprises a bellows body with fixed flanges connected to both ends respectively, a variable diameter flow guide pipe is arranged in the bellows body, the outer wall of the large diameter end of the variable diameter flow guide pipe is sealingly connected to one of the fixed flanges, and the small diameter end of the variable diameter flow guide pipe extends into the other fixed flange and a gap is left between the small diameter end of the variable diameter flow guide pipe and the inner wall of the other fixed flange.

[0008] Furthermore, connecting sleeves are respectively provided on both axial end surfaces of the corrugated pipe body, and the outer wall of the large diameter end of the variable diameter flow guide pipe is fixedly connected to the inner wall of one of the connecting sleeves.

[0009] Furthermore, the small diameter end of the variable diameter flow guide pipe at least partially extends into the other connecting sleeve.

[0010] Furthermore, a fixing flange is sleeved on the outer end of each connecting sleeve.

[0011] Furthermore, at the small-diameter end of the variable-diameter flow guide pipe, a slip-on flange is sleeved on the connecting sleeve, and the outer diameter of the slip-on flange is greater than the outer diameter of the fixed flange.

[0012] Furthermore, a limiting step groove is provided at one end of the slip-on flange close to the fixed flange, and at least a portion of the fixed flange is located in the limiting step groove.

[0013] Furthermore, both ends of the corrugated tube body are seamlessly connected to the connecting sleeves.

[0014] Compared with the existing technology, the advantages of the present application are: by utilizing variable diameter guide pipes with different port diameters at both ends, the device can perfectly solve the shortcomings of dust leakage and deposition of the corrugated pipe during transportation when transporting dust. At the same time, the gap left at the small diameter end can play a role in shock absorption and vibration absorption, reduce noise and reduce the impact on other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main structure assembly diagram of the dust transport bellows of the utility model;

[0016] Figure 2 for Figure 1 A magnified view of some structural details in the middle A area;

[0017] Figure 3 for Figure 1 A magnified view of some structural details in area B.

[0018] In the figure, there are a bellows body 1, a fixed flange 2, a limiting step groove 20, a variable diameter flow guide pipe 3, a connecting sleeve 4, and a slip-on flange 5. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] Embodiment 1

[0021] A dust transport bellows comprises a bellows body 1 with fixed flanges 2 connected to both ends respectively, a variable diameter flow guide pipe 3 is arranged inside the bellows body 1, the outer wall of the large diameter end of the variable diameter flow guide pipe 3 is sealedly connected to one of the fixed flanges 2, and the small diameter end of the variable diameter flow guide pipe 3 extends into the other fixed flange 2 and a gap is left between the small diameter end of the variable diameter flow guide pipe 3 and the inner wall of the other fixed flange 2.

[0022] The purpose of the variable diameter flow guide pipe 3 is to prevent dust from entering the corrugated pipe body 1 and leaking and depositing during dust transportation, so as to protect the equipment. At the same time, a gap is left between the small diameter end of the variable diameter flow guide pipe 3 and the inner wall of another fixed flange 2. The purpose is that during the use of the dust transportation bellows, due to temperature changes, the corrugated pipe body 1 and the variable diameter flow guide pipe 3 may undergo thermal expansion or contraction. Leaving a gap allows the variable diameter flow guide pipe 3 to expand or contract freely within a limited range, avoiding the problem of component deformation or stress concentration due to temperature changes. During the dust transportation process, the equipment may vibrate. If the small diameter end of the variable diameter flow guide pipe 3 is directly connected to the fixed flange 2, it is easy to transmit the vibration to other components, causing noise and wear. Leaving a gap can play a role in shock absorption and vibration absorption, reduce noise and reduce the impact on other components.

[0023] The two ends of the variable diameter flow guide pipe 3 have different diameters, which can change the flow rate of the dust gas flowing through the variable diameter flow guide pipe 3 .

[0024] Connecting sleeves 4 are respectively provided on both axial end surfaces of the corrugated pipe body 1 , and the outer wall of the large diameter end of the variable diameter flow guide pipe 3 is fixedly connected to the inner wall of one of the connecting sleeves 4 .

[0025] By arranging connecting sleeves 4 at both axial ends of the corrugated pipe body 1 and fixedly connecting the variable-diameter flow guide pipe 3 to one of the connecting sleeves 4, the overall structural stability of the device can be improved. The connecting sleeve 4 plays a role of connection and support, ensuring that the connection between the various parts is firm and not prone to displacement or loosening; fixedly connecting the large-diameter end of the variable-diameter flow guide pipe 3 and the inner wall of the connecting sleeve 4 can effectively reduce the leakage risk of the device. The dense connection can ensure that dust or medium will not leak during the transmission process.

[0026] The small diameter end of the variable diameter flow guide pipe 3 at least partially extends into the other connecting sleeve 4 .

[0027] A fixing flange 2 is sleeved on the outer end of each connecting sleeve 4 .

[0028] The two fixing flanges 2 are connected to the front and rear equipment respectively, and there is a seamless connection between the fixing flanges 2 and the front and rear equipment, so that no dust leakage will occur during operation.

[0029] At the small diameter end of the variable diameter flow guide pipe 3 , a loose flange 5 is sleeved on the connecting sleeve 4 , and the outer diameter of the loose flange 5 is greater than the outer diameter of the fixed flange 2 .

[0030] The advantage of the slip-on flange 5 is that it has a large adjustment margin during installation, can adapt to the connection requirements of different positions and angles, and is convenient for adjusting the position and angle of the connecting parts.

[0031] A limiting step groove 20 is provided at one end of the slip-on flange 5 close to the fixed flange 2 , and at least a portion of the fixed flange 2 is located in the limiting step groove 20 .

[0032] The design of the limiting step groove makes the force on the connection more uniform. The fixed flange is at least partially in the limiting step groove, which can reduce the stress concentration at the connection, improve the pressure bearing capacity of the connection, and enhance the pressure resistance of the pipeline system; at the same time, the limiting step groove 20 can prevent the connection parts from being misplaced or moved during use, and maintain the stability and reliability of the connection.

[0033] Both ends of the corrugated tube body 1 are seamlessly connected to the connecting sleeves 4 respectively.

[0034] The bellows body 1 and the connecting sleeve 4 are seamlessly connected, which can ensure the sealing performance of the connection. Through the seamless connection, the leakage of the medium can be effectively prevented. At the same time, the seamless connection makes the bellows body 1 and the connecting sleeve 4 present an integrated structure, and the strength of the connection is more reliable and stable.

[0035] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A dust transport bellows, comprising a bellows body (1) with fixed flanges (2) connected to both ends, It is characterized in that A variable diameter flow guide pipe (3) is provided in the corrugated pipe body (1); the outer wall of the large diameter end of the variable diameter flow guide pipe (3) is sealedly connected to one of the fixed flanges (2); the small diameter end of the variable diameter flow guide pipe (3) extends into the other fixed flange (2); and a gap is left between the small diameter end of the variable diameter flow guide pipe (3) and the inner wall of the other fixed flange (2).

2. A dust transport bellows according to claim 1, It is characterized in that Connecting sleeves (4) are respectively provided on both axial end surfaces of the corrugated pipe body (1), and the outer wall of the large diameter end of the variable diameter flow guide pipe (3) is fixedly connected to the inner wall of one of the connecting sleeves (4).

3. A dust transport bellows according to claim 2, It is characterized in that The small diameter end of the variable diameter flow guide pipe (3) at least partially extends into the other connecting sleeve (4).

4. A dust transport bellows according to claim 2, It is characterized in that A fixing flange (2) is sleeved on the outer end of each connecting sleeve (4).

5. A dust transport bellows according to claim 4, It is characterized in that At the small diameter end of the variable diameter flow guide pipe (3), a slip-on flange (5) is sleeved on the connecting sleeve (4), and the outer diameter of the slip-on flange (5) is greater than the outer diameter of the fixed flange (2).

6. A dust transport bellows according to claim 5, It is characterized in that A limiting step groove (20) is provided at one end of the slip-on flange (5) close to the fixed flange (2), and at least a portion of the fixed flange (2) is located in the limiting step groove (20).

7. A dust transport bellows according to claim 2, It is characterized in that Both ends of the corrugated tube body (1) are seamlessly connected to the connecting sleeves (4).

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