A pneumatic conveying, ash cleaning and clogging relief device

Abstract

The utility model discloses a kind of pneumatic conveying ash and dredging blocked device, including first pipe body and second pipe body, one end of the second pipe body is provided with pressure shell, pressure shell includes conical ring and end plate, the little head end of conical ring is connected with second pipe body, big end is connected with end plate, and air inlet pipe is provided on pressure shell;The one end of the first pipe body is extended to a distance in the second pipe body after passing through end plate, and pressure cavity is formed between the first pipe body and pressure shell, and annular air outlet passage is formed along the inner wall of second pipe body between the first pipe body and second pipe body. By forming annular air outlet passage along the inner wall of second pipe body between the first pipe body and second pipe body, high-pressure airflow is blown along the inner wall of second pipe body, thereby improving the effect of airflow carrying heavier sediment material.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying equipment technology, and in particular to a pneumatic conveying dust removal and blockage clearing device. Background Technology

[0002] In our company's pneumatic conveying process for transferring powdery materials, heavier materials often settle due to their own weight because the materials are not subjected to airflow within the pipeline. Over time, this leads to pipeline blockage, affecting normal pneumatic conveying and reducing conveying efficiency or capacity. Existing pneumatic conveying technologies use anti-blockage pipe devices to unclog the pipeline and reduce material blockage. For example, CN 212745407 U discloses a pressurized anti-blockage pipeline structure, which includes a first conveying pipe and a second conveying pipe. The first conveying pipe is inserted into the second conveying pipe, and a pressurization chamber is formed between the first and second conveying pipes. An air supply pipe is connected to the pressurization chamber. Its advantages are: by increasing the air pressure in the second conveying pipe, the possibility of material blockage is reduced and the ability of the pipeline to convey materials is improved; its disadvantages are: the end of the first conveying pipe is close to the inner wall of the cone. When the pressurized airflow passes through the gap between the first conveying pipe and the inner wall of the cone, the inner wall of the cone guides the airflow to the apex of the extension line of the inner wall of the cone. At the apex of the extension line of the inner wall of the cone, the airflow collides and converges, and the gas velocity decreases. Therefore, the effect of the airflow in carrying away heavier settling materials is reduced. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a pneumatic conveying dust removal and blockage clearing device, which forms an annular air outlet channel between the first pipe body and the second pipe body, allowing high-pressure airflow to be blown out along the inner wall of the second pipe body, thereby improving the effect of airflow carrying away heavier settled materials.

[0004] To achieve the above objectives, this application provides a pneumatic conveying dust removal and blockage clearing device, including a first pipe body and a second pipe body. One end of the second pipe body is provided with a pressure shell, which includes a conical ring and an end plate. The small end of the conical ring is connected to the second pipe body, and the large end is connected to the end plate. An air inlet is provided on the pressure shell. One end of the first pipe body extends into the second pipe body after passing through the end plate. A pressure chamber is formed between the first pipe body and the pressure shell. An annular air outlet channel is formed between the first pipe body and the second pipe body along the inner wall of the second pipe body.

[0005] The air inlet includes a second pressure pipe, which is tangentially connected to the pressure housing.

[0006] The annular air outlet channel is also equipped with an air guiding structure, which is used to guide the high-speed air blown out of the annular air outlet channel into a spiral airflow.

[0007] The air guide structure consists of multiple swivel blades installed on the outer wall of the first pipe.

[0008] The rotating blades are evenly distributed in a ring on the support ring, and the support ring is fixedly installed on the first tube body.

[0009] The air guiding structure consists of at least a plurality of swivel blades installed on the inner wall of the second pipe, and the first pipe is inserted into a hole formed by the plurality of swivel blades.

[0010] The outer wall of the first tube is also equipped with a one-way valve located inside the pressure chamber. The one-way valve divides the pressure chamber into a first pressure chamber on the left and a second pressure chamber on the right. The first pressure chamber is connected to the second pressure chamber through the one-way valve. The air inlet includes a first pressure pipe and a second pressure pipe. The first pressure pipe is connected to the first pressure chamber, and the second pressure pipe is connected to the second pressure chamber.

[0011] The one-way valve includes a fixed ring and a movable ring. The inner circumference of the fixed ring is fixedly mounted on the first pipe body, and the outer circumference of the fixed ring is connected and sealed to the inner wall of the pressure housing. The movable ring is located on one side of the second pressure chamber, and there is a gap between the movable ring and the first pipe body and / or the pressure housing. The fixed ring is provided with several air holes, and at least two guide rods are installed on the movable ring. The guide rods slide through the sliding holes on the fixed ring, and a limit member is installed at one end of the guide rods that passes through the fixed ring.

[0012] A spring is fitted onto the guide rod, with one end of the spring abutting against a limiting member and the other end abutting against a fixing ring.

[0013] The outer circumference of the fixed ring is provided with a sealing ring groove, and a sealing ring is installed in the sealing ring groove.

[0014] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: 1. This utility model forms an annular air outlet channel between the first pipe body and the second pipe body, through which air flows out along the inner wall of the second pipe body, so that the high-pressure airflow is blown out along the inner wall of the second pipe body, thereby improving the effect of airflow carrying away heavier settling materials.

[0015] 2. The annular air outlet channel of this utility model is also equipped with an air guiding structure, which is used to guide the high-speed air blown out of the annular air outlet channel into a spiral airflow. By setting the air guiding structure, the effect of discharging the spiral airflow from the annular air outlet channel is further improved.

[0016] 3. The second pressure pipe of this utility model is used to introduce first pressure compressed air. The first pressure compressed air is used to increase the air pressure in the second pipe body and reduce the deposition and blockage of materials. The first pressure pipe is used to introduce second pressure compressed air. The pressure of the second pressure compressed air is greater than that of the first pressure compressed air. The first pressure pipe is started intermittently to clear any possible deposition and blockage. Since the first pressure pipe is started intermittently, the consumption of compressed air is also reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the main structure after the second tube body is cut in half.

[0019] Figure 2 This is a front view schematic diagram of the air guide structure installed in the annular air outlet channel in this utility model.

[0020] Figure 3 This is a three-dimensional structural diagram of the air guide structure installed in the annular air outlet channel in this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the second tube body after a 1 / 4 section.

[0022] Figure 5 This is a three-dimensional structural diagram of the first pipe body in this utility model, in which a one-way valve and an air guide structure are installed.

[0023] Figure 6 This is a three-dimensional structural diagram of the first pipe body in this utility model, showing the installation of a one-way valve and an air guide structure from another perspective.

[0024] Figure 7 This is a schematic diagram of the main structure of the one-way valve in this utility model.

[0025] Figure 8 This is a three-dimensional structural diagram of the one-way valve in this utility model.

[0026] Figure 9 This is a three-dimensional structural schematic diagram of the one-way valve in this utility model from another perspective.

[0027] Figure 10 This is a three-dimensional structural diagram of the air guiding structure in this utility model.

[0028] Figure Labels First pipe body 10, first flange 11; Second pipe body 20, cone ring 21, end plate 22, pressure chamber 23, annular air outlet channel 24, first pressure pipe 25, second pressure pipe 26, second flange 27; One-way valve 30, fixed ring 31, air hole 311, sealing ring groove 312, moving ring 32, guide rod 33, spring 34, limiting component 35; Air guide structure 40, rotating blade 41, support ring 42. Detailed Implementation

[0029] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be specifically noted that the specific embodiments described below are only for illustrating the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0030] Regarding the explanation of terminology: In this application, "and / or" is used to describe the relationship between related objects, covering three possible situations: taking "A and / or B" as an example, it can indicate the situation where only A exists, A and B exist simultaneously, or only B exists; the symbol " / " indicates the "or" relationship between related objects, such as "A / B" which refers to A or B.

[0031] Regarding the description of the embodiments: The terms "exemplary" and "for example" appearing in this application are only used to illustrate the technical solutions through specific examples. It should be particularly emphasized that any implementation method or design scheme marked as "exemplary" or "for example" should not be construed as having an advantage over other solutions. Such expressions are only used to present the technical concepts more intuitively.

[0032] Example 1: See Figure 1 This embodiment provides a pneumatic conveying dust removal and blockage clearing device, including a first pipe body 10 and a second pipe body 20. A pressure shell is provided at one end of the second pipe body 20. The pressure shell includes a conical ring 21 and an end plate 22. The small end of the conical ring 21 is connected to the second pipe body 20, and the large end is connected to the end plate 22. An air inlet is provided on the pressure shell. One end of the first pipe body 10 extends into the second pipe body 20 after passing through the end plate 22, forming a pressure chamber 23 between the first pipe body 10 and the pressure shell. An annular air outlet channel 24 is formed between the first pipe body 10 and the second pipe body 20 along the inner wall of the second pipe body 20. This embodiment improves the effect of airflow carrying away heavier settled materials by forming an annular air outlet channel 24 along the inner wall of the second pipe body 20 between the first pipe body 10 and the second pipe body 20.

[0033] Furthermore, the air inlet includes a second pressure pipe 26, which is tangentially connected to the pressure housing, so that the airflow entering the pressure chamber 23 forms a circulation, and the circulation is discharged from the annular air outlet channel 24, forming a spiral airflow. The spiral airflow can move better along the inner wall of the second pipe body 20.

[0034] The first flange 11 is welded to the other end of the first pipe body 10, and the second flange 27 is welded to the other end of the second pipe body 20.

[0035] Example 2: Based on Example 1, see Figure 2 , 3 5.6. An air guide structure 40 is also provided inside the annular air outlet channel 24. The air guide structure 40 is used to guide the high-speed air blown out of the annular air outlet channel 24 into a spiral airflow. By setting the air guide structure 40, the effect of the spiral airflow discharged from the annular air outlet channel 24 is further improved.

[0036] In one of the solutions, see Figure 3 The air guiding structure 40 consists of multiple swivel blades 41 installed on the outer wall of the first pipe body 10.

[0037] Further, see Figure 10 , and then combine Figure 3 The rotating blades 41 are evenly distributed in a ring on the support ring 42, and the support ring 42 is fixedly installed on the first tube body 10.

[0038] In another embodiment, the air guide structure 40 consists of at least a plurality of swivel blades 41 installed on the inner wall of the second tube 20, and the first tube 10 passes through a hole formed by the plurality of swivel blades 41.

[0039] In other words, the multiple swivel blades 41 can be installed and fixed on the outer wall of the first tube 10 or on the inner wall of the second tube 20, depending on the needs.

[0040] Example 3: Based on Example 1 or Example 2, see Figure 2 , 34. A one-way valve 30 is also installed on the outer wall of the first pipe body 10 within the pressure chamber 23. The one-way valve 30 divides the pressure chamber 23 into a first pressure chamber on the left and a second pressure chamber on the right. The first pressure chamber is connected to the second pressure chamber through the one-way valve 30. The air inlet includes a first pressure pipe 25 and a second pressure pipe 26. The first pressure pipe 25 is connected to the first pressure chamber, and the second pressure pipe 26 is connected to the second pressure chamber. By setting the one-way valve 30, the pressure chamber 23 is divided into a first pressure chamber on the left and a second pressure chamber on the right. Compressed air at different pressures is introduced into the first pressure chamber and the second pressure chamber through the first pressure pipe 25 and the second pressure pipe 26, respectively.

[0041] In this embodiment, the second pressure pipe 26 is used to introduce first-pressure compressed air, which increases the air pressure inside the second pipe body 20 and reduces material deposition and blockage; the first pressure pipe 25 is used to introduce second-pressure compressed air, the pressure of which is greater than that of the first-pressure compressed air. The first pressure pipe 25 is controlled by a solenoid valve and is started intermittently, for example, for 3 to 5 seconds every hour, to clear any possible deposits and blockages. Since the first pressure pipe 25 is started intermittently, the consumption of compressed air is also reduced.

[0042] Specifically, see Figure 7 , 8 9. The one-way valve 30 includes a fixed ring 31 and a movable ring 32. The inner circumference of the fixed ring 31 is fixedly mounted on the first pipe body 10, and the outer circumference of the fixed ring 31 is sealed to the inner wall of the pressure housing. The movable ring 32 is located on one side of the second pressure chamber, and there is a gap between the movable ring 32 and the first pipe body 10 and / or the pressure housing. The fixed ring 31 is provided with a plurality of air holes 311, and at least two guide rods 33 are fixedly mounted on the movable ring 32. The guide rods 33 slide through the sliding holes on the fixed ring 31, and a limit member 35 is installed at one end of the guide rods 33 that passes through the fixed ring 31. When pressurized air is introduced into the second pressure pipe 26, the movable ring 32 moves toward the fixed ring 31, at which time the movable ring 32 fits against the fixed ring 31, and the movable ring 32 closes the air holes 311 on the fixed ring 31. When pressurized air is introduced into the first pressure pipe 25, the movable ring 32 moves away from the fixed ring 31, at which time the air holes 311 on the fixed ring 31 open.

[0043] Two, three, or four guide rods 33 can be evenly distributed in a ring. The limiting member 35 is a retaining ring, which is fixedly installed at the end of the guide rod 33 by screws.

[0044] In this embodiment, there is a gap between the inner circumference of the movable ring 32 and the outer wall of the first tube 10, and there is also a gap between the outer circumference of the movable ring 32 and the inner wall of the pressure shell.

[0045] Further, see Figure 8 A spring 34 is fitted onto the guide rod 33. One end of the spring 34 abuts against the limiting member 35, and the other end abuts against the fixing ring 31. By setting the spring 34, the pressure in the first pressure chamber is ensured to reach a preset pressure value before the spring 34 is compressed, thereby opening the air hole 311 and ensuring the unblocking effect. The pressure in the first pressure chamber is controlled by selecting the elastic force of the spring 34.

[0046] See Figure 7 The outer circumference of the fixing ring 31 is provided with a sealing ring groove 312, and a sealing ring is installed in the sealing ring groove 312.

[0047] The working principle or process of this utility model: When using, please refer to Figure 3 The second pressure pipe 26 is used to introduce the first pressure compressed air, which is used to increase the air pressure in the second pipe body 20 and reduce the deposition and blockage of materials; the first pressure pipe 25 is used to introduce the second pressure compressed air, the pressure of the second pressure compressed air is greater than the pressure of the first pressure compressed air. Both the first pressure pipe 25 and the second pressure pipe 26 are controlled by solenoid valves. When the solenoid valve on the first pressure pipe 25 is opened, it will clear any possible deposition and blockage. At this time, the solenoid valve on the second pressure pipe 26 is closed.

[0048] The high-speed spiral airflow blown out from the annular air outlet 24 is blown out along the inner wall of the second pipe 20, thereby improving the effect of the airflow carrying away heavier settling materials.

[0049] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A pneumatic conveying dust removal and blockage clearing device, comprising a first pipe body (10) and a second pipe body (20), wherein a pressure shell is provided at one end of the second pipe body (20), the pressure shell comprising a conical ring (21) and an end plate (22), the small end of the conical ring (21) being connected to the second pipe body (20), and the large end being connected to the end plate (22), and an air inlet is provided on the pressure shell; characterized in that: One end of the first tube (10) extends into the second tube (20) after passing through the end plate (22). A pressure chamber (23) is formed between the first tube (10) and the pressure shell. An annular air outlet channel (24) is formed between the first tube (10) and the second tube (20) along the inner wall of the second tube (20).

2. The pneumatic conveying dust removal and blockage clearing device according to claim 1, characterized in that: The air inlet includes a second pressure pipe (26), which is tangentially connected to the pressure housing.

3. The pneumatic conveying dust removal and blockage clearing device according to claim 1, characterized in that: The annular air outlet channel (24) is also provided with an air guide structure (40), which is used to guide the high-speed air blown out of the annular air outlet channel (24) into a spiral airflow.

4. The pneumatic conveying dust removal and blockage clearing device according to claim 3, characterized in that: The air guide structure (40) consists of multiple swivel blades (41) installed on the outer wall of the first pipe body (10).

5. The pneumatic conveying dust removal and blockage clearing device according to claim 4, characterized in that: The rotating blades (41) are evenly distributed in a ring on the support ring (42), and the support ring (42) is fixedly installed on the first tube body (10).

6. The pneumatic conveying dust removal and blockage clearing device according to claim 3, characterized in that: The air guide structure (40) consists of at least a plurality of swivel blades (41) installed on the inner wall of the second pipe (20), and the first pipe (10) is inserted into the hole formed by the plurality of swivel blades (41).

7. A pneumatic conveying dust removal and blockage clearing device according to any one of claims 1 to 6, characterized in that: The outer wall of the first tube (10) is also equipped with a one-way valve (30) located in the pressure chamber (23). The one-way valve (30) divides the pressure chamber (23) into a first pressure chamber on the left and a second pressure chamber on the right. The first pressure chamber is connected to the second pressure chamber through the one-way valve (30). The air inlet includes a first pressure pipe (25) and a second pressure pipe (26). The first pressure pipe (25) is connected to the first pressure chamber, and the second pressure pipe (26) is connected to the second pressure chamber.

8. The pneumatic conveying dust removal and blockage clearing device according to claim 7, characterized in that: The one-way valve (30) includes a fixed ring (31) and a movable ring (32). The inner circumference of the fixed ring (31) is fixed on the first tube body (10), and the outer circumference of the fixed ring (31) is connected and sealed to the inner wall of the pressure shell. The movable ring (32) is located on one side of the second pressure chamber. There is a gap between the movable ring (32) and the first tube body (10) and / or the pressure shell. The fixed ring (31) is provided with a plurality of air holes (311). At least two guide rods (33) are installed on the movable ring (32). The guide rods (33) slide through the sliding holes on the fixed ring (31). A limit member (35) is installed at one end of the guide rod (33) that passes through the fixed ring (31).

9. The pneumatic conveying dust removal and blockage clearing device according to claim 8, characterized in that: A spring (34) is fitted on the guide rod (33), with one end of the spring (34) abutting against the limiting member (35) and the other end abutting against the fixing ring (31).

10. The pneumatic conveying dust removal and blockage clearing device according to claim 8, characterized in that: The outer circumference of the fixed ring (31) is provided with a sealing ring groove (312), and a sealing ring is installed in the sealing ring groove (312).

Images