A ring air pressure boosting and blockage clearing device for material conveying pipeline

Abstract

The utility model relates to granular material pneumatic conveying technical field, specifically disclose a kind of ring air pressure boosting unblocking device for material conveying pipeline, including material conveying import section and material export section, the material conveying import section includes straight-through pipe and import flange being installed on straight-through pipe;The one end of the straight-through pipe away from import flange axially extends into the pressurized air cavity, and forms pressurized cavity between the inner wall of the pressurized air cavity;At least one compressed air inlet is provided on the lateral wall of the pressurized air cavity, and is communicated with the pressurized cavity.In the process of using, through the unique annular pressurized cavity design, after compressed air enters, it is sprayed to material conveying direction uniformly, high speed from 360 ° ring gap.The annular airflow can simultaneously impact and push the blocked material of the whole section of pipeline, the acting area is large, and the unblocking force is strong and uniform, and the efficiency is much higher than traditional single-point auxiliary blowing device.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic conveying technology for granular materials, specifically an annular air pressurization and unblocking device for material conveying pipelines. Background Technology

[0002] In the pneumatic conveying of powdery or granular materials in industries such as chemicals and thermal power, the materials often experience poor flow, accumulation, or even complete blockage within the pipeline due to their own adhesion, hygroscopicity, pipeline friction, or elbow resistance. Pipeline blockage can interrupt the production process, reduce efficiency, and is extremely difficult to clean and maintain.

[0003] In existing technologies, a common approach is to install purging valves or boosters at points in the pipeline prone to blockage. However, traditional purging devices often employ single-point or direct-blowing air intake, resulting in concentrated airflow and a limited effective range. This can easily lead to a situation where "one path is cleared, but surrounding areas remain blocked," resulting in unsatisfactory clearing effects. Furthermore, the concentrated high-speed airflow can cause severe localized abrasion to the material and the inner wall of the pipeline. In addition, some devices have complex structures, making installation and maintenance inconvenient.

[0004] Therefore, there is an urgent need in the field for a device that can generate uniform, powerful, and low-wear purging force and effectively solve the problem of material blockage in pipelines. Utility Model Content

[0005] The purpose of this invention is to provide an annular gas pressurization and unblocking device for material conveying pipelines, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an annular air booster unblocking device for a material conveying pipeline, comprising a material conveying inlet section and a material conveying outlet section. The material conveying inlet section includes a straight pipe and an inlet flange installed on the straight pipe. The outlet section includes an outlet flange for connecting to a downstream pipeline and a booster air chamber disposed inside the outlet flange. The end of the straight pipe away from the inlet flange extends axially into the booster air chamber and forms a booster channel with the inner wall of the booster air chamber. At least one compressed air inlet is provided on the side wall of the booster air chamber and communicates with the booster channel.

[0007] Furthermore, an axial gap is left between the bottom of the straight pipe and the inner end face of the outlet flange, and the axial gap and the pressurization cavity together form an annular injection port.

[0008] Furthermore, the slit width of the circumferential injection nozzle is 2.9mm-3.1mm.

[0009] Furthermore, the straight pipe is slidably connected to the pressurized air cavity through a threaded connector structure, and the width of the axial gap can be changed by rotating the straight pipe.

[0010] Furthermore, the axis of the compressed air inlet is parallel to the tangential direction of the booster chamber, so that the compressed air can form a swirling flow in the booster chamber after entering.

[0011] Furthermore, the end of the compressed air inlet away from the pressurized air chamber is provided with a threaded connection.

[0012] Furthermore, the inlet flange has the same diameter as the straight pipe.

[0013] Furthermore, the inlet flange, straight pipe, outlet flange, and pressurized air chamber are all made of stainless steel.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This annular air booster unblocking device for material conveying pipelines, through the cooperation of the inlet flange, straight pipe, and booster air chamber, utilizes a unique annular booster chamber design during use. Compressed air enters and is then uniformly and rapidly sprayed towards the material conveying direction from the 360° annular gap. This annular airflow can simultaneously impact and push the blockage material across the entire cross-section of the pipeline, resulting in a large effective area, strong and uniform unblocking force, and efficiency far exceeding that of traditional single-point blowing devices.

[0015] Secondly, because the airflow is evenly distributed around the entire circumference of the pipe, it avoids concentrated scouring of local areas by high-speed airflow, significantly reducing wear on the pipe and materials and extending the service life of the equipment.

[0016] Then, the device mainly consists of flanges, straight pipe sections and pressurization chambers. It has few parts, a compact structure, no need for complex internal components, a low failure rate, and is very convenient to install and maintain. It can be directly connected in series with existing pipelines.

[0017] Finally, by using a conventional factory compressed air source of 0.6-1.6 MPa and pressurizing it in the annular cavity, a stronger axial purging force than traditional devices can be generated, which can effectively break up solid blockage columns. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a top view of the overall structure of an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Inlet flange; 2. Straight pipe; 3. Outlet flange; 4. Pressurized air chamber; 5. Pressurized chamber channel; 6. Compressed air inlet; 7. Circumferential injection port; 8. Threaded connection. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-2 This utility model provides a technical solution: an annular air booster unblocking device for a material conveying pipeline, comprising a material conveying inlet section and a material conveying outlet section. The material conveying inlet section includes a straight pipe 2 and an inlet flange 1 installed on the straight pipe 2, specifically the straight pipe 2 being welded to the inlet flange 1; the outlet section includes an outlet flange 3 for connecting to a downstream pipeline and a booster air chamber 4 disposed inside the outlet flange 3; one end of the straight pipe 2 away from the inlet flange 1 extends axially into the booster air chamber 4, forming a booster channel 5 between it and the inner wall of the booster air chamber 4; at least one compressed air inlet 6 is provided on the side wall of the booster air chamber 4, which is connected to the booster channel 5.

[0023] In the embodiments provided by this utility model, an axial gap is left between the bottom of the straight pipe 2 and the inner end face of the outlet flange 3. The axial gap and the pressurization cavity 5 together form an annular injection port 7. The end face of the straight pipe section does not contact the inner end face of the outlet flange 3, leaving a certain axial distance. This distance constitutes the width of the annular injection port 7.

[0024] During operation, the material flows in from the inlet flange 1 and passes through the straight pipe 2. When blockage occurs or purging is required, compressed air enters the pressurization chamber 5 from the compressed air inlet 6. After being converged and pressurized by the annular cavity, it is sprayed out at high speed and evenly from the annular slit nozzle 7. The airflow direction is consistent with the material conveying direction, thereby effectively impacting, breaking and pushing the blocked material to restore its flow.

[0025] In the embodiments provided by this utility model, the slit width of the annular slit nozzle 7 is 2.9mm-3.1mm, with about 3mm being optimal.

[0026] In the embodiments provided by this utility model, the straight pipe 2 is slidably connected to the pressurized air chamber 4 through a threaded connector structure. By rotating the straight pipe 2, the width of the axial gap can be changed. Specifically, its extension length can be finely adjusted, thereby changing the width of the annular slit nozzle 7, achieving precise adjustment of airflow speed and flow rate to adapt to materials with different physical properties and degrees of blockage.

[0027] In the embodiments provided by this utility model, the axis of the compressed air inlet 6 is parallel to the tangential direction of the booster cavity 5, so that the compressed air can form a swirling flow in the booster cavity 5 after entering.

[0028] In the embodiments provided by this utility model, the end of the compressed air inlet 6 away from the pressurized air chamber 4 is provided with a threaded connection part 8, which facilitates connection with external equipment and makes it more convenient to use.

[0029] In the embodiments provided by this utility model, the diameter of the inlet flange 1 and the straight pipe 2 are the same to ensure the smooth flow of materials and avoid the generation of new turbulence or resistance points.

[0030] In the embodiments provided by this utility model, the inlet flange 1, the straight pipe 2, the outlet flange 3, and the pressurized air chamber 4 are all made of stainless steel, preferably 304 stainless steel or 316 stainless steel.

[0031] It should be noted that all electrical equipment involved in this application can be powered by a storage battery or an external power source, and this application is equipped with a control system for controlling the operation of the entire equipment.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas-injected pressure-boosting and unblocking device for a material conveying pipeline, comprising a material conveying inlet section and a material outlet section, characterized in that: The material conveying inlet section includes a straight pipe (2) and an inlet flange (1) installed on the straight pipe (2); The material outlet section includes an outlet flange (3) for connecting to the downstream pipeline and a pressurized air chamber (4) located inside the outlet flange (3). The end of the straight pipe (2) away from the inlet flange (1) extends axially into the pressurized air chamber (4) and forms a pressurized cavity channel (5) between it and the inner wall of the pressurized air chamber (4). At least one compressed air inlet (6) is provided on the side wall of the pressurized air chamber (4), which is connected to the pressurized chamber channel (5).

2. The annular gas pressurization and unblocking device for material conveying pipelines according to claim 1, characterized in that: An axial gap is left between the bottom of the straight pipe (2) and the inner end face of the outlet flange (3), and the axial gap and the pressurization cavity (5) together form an annular injection port (7).

3. The annular gas pressurization and unblocking device for material conveying pipelines according to claim 2, characterized in that: The slit width of the circumferential injection port (7) is 2.9mm-3.1mm.

4. The annular gas pressurization and unblocking device for material conveying pipelines according to claim 2, characterized in that: The straight pipe (2) is slidably connected to the pressurized air chamber (4) through a threaded connection structure. The width of the axial gap can be changed by rotating the straight pipe (2).

5. The annular gas pressurization and unblocking device for a material conveying pipeline according to claim 1, characterized in that: The axis of the compressed air inlet (6) is parallel to the tangent of the booster chamber (5) so that the compressed air can form a swirling flow in the booster chamber (5) after entering.

6. The annular gas pressurization and unblocking device for material conveying pipelines according to claim 1, characterized in that: The compressed air inlet (6) is provided with a threaded connection (8) at the end away from the pressurized air chamber (4).

7. The annular gas pressurization and unblocking device for material conveying pipelines according to claim 1, characterized in that: The inlet flange (1) has the same diameter as the straight pipe (2).

8. The annular gas pressurization and unblocking device for material conveying pipelines according to claim 1, characterized in that: The inlet flange (1), straight pipe (2), outlet flange (3), and pressurized air chamber (4) are all made of stainless steel.

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