Pneumatic conveying mechanism

Abstract

The utility model belongs to the technical field of pneumatic conveying devices. The pneumatic conveying mechanism is characterized in that the pneumatic conveying mechanism comprises a pneumatic conveying pipeline, and a feeding assembly is arranged on the pneumatic conveying pipeline; the feeding assembly comprises a feeding port and an expansion part which are arranged from top to bottom; the expansion part extends into the pneumatic conveying pipeline, and the two ends of the bottom of the expansion part in the axial direction of the pneumatic conveying pipeline extend out of the corresponding ends of the feeding port correspondingly; the anti-blocking assembly is arranged in the pneumatic conveying pipeline; the anti-blocking assembly comprises a partition plate which is arranged in the pneumatic conveying pipeline and located below the feeding assembly, and the pneumatic conveying pipeline is divided into an upper conveying channel and a lower conveying channel through the partition plate. The pneumatic conveying mechanism is used for solving the technical problem that when the material conveying amount fluctuation is large or the conveying amount is large, an existing pneumatic conveying mechanism tee joint is large in conveying amount and prone to material blocking.

Description

Technical Field

[0001] The utility model belongs to the technical field of pneumatic conveying devices, and in particular relates to a pneumatic conveying mechanism. Background Art

[0002] The three-way pipe in pneumatic transportation is an important structure for material collection and transfer. The three-way structure connected under the air lock is often blocked due to the fluctuation of material discharge from the air lock. It is necessary to optimize the design on the original basis to cope with the pneumatic transportation of large-volume and difficult-to-transport materials.

[0003] The existing three-way structure is a common T-type structure or a Y-type structure. There are inevitable fluctuations in the discharge of the air lock, and the materials required for pneumatic conveying at different times are not constant. The old three-way design can only cope with pneumatic conveying under low production. When the conveying material volume fluctuates greatly or the conveying volume is large, the three-way structure is prone to blockage, affecting production. Utility Model Content

[0004] The utility model aims to provide a pneumatic conveying mechanism to solve the technical problem that the existing pneumatic conveying mechanism has a large conveying volume and is prone to material blockage when the conveying volume fluctuates greatly or the conveying volume is large.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions, the pneumatic conveying mechanism is characterized in that it includes:

[0006] A pneumatic conveying pipeline, wherein a feed assembly is arranged on the pneumatic conveying pipeline; the feed assembly comprises a feed port and an expansion portion arranged from top to bottom; the expansion portion extends into the pneumatic conveying pipeline, and two ends of the bottom of the expansion portion along the axial direction of the pneumatic conveying pipe respectively extend out of the corresponding ends of the feed port;

[0007] An anti-blocking component is arranged in the pneumatic conveying pipeline;

[0008] The anti-blocking component includes a partition plate arranged in the pneumatic conveying pipeline and located below the feeding component, and the partition plate divides the pneumatic conveying pipeline into an upper conveying channel and a lower conveying channel.

[0009] The material enters the feed port through the air lock. As the volume of the expansion part increases, the material accumulation height here decreases, which effectively copes with the blockage caused by short-term material discharge fluctuations.

[0010] The utility model improves the existing three-way structure, and uses the partition of the anti-blocking component to lift the material at the bottom of the three-way, so that the pneumatic conveying airflow can pass from the bottom to the front section to continue transporting the material.

[0011] In order to solve the technical problem of blockage above the partition, the utility model adopts the following technical solution, the anti-blocking component also includes a valve plate movably connected to the end of the partition, which is used to close or open the lower material conveying channel. When blockage occurs above the partition and the lower part is unblocked, the regulating valve plate closes the lower channel to increase the pressure difference on both sides of the upper channel to force the gas to blow the blocked material from above the partition. After the upper part is unblocked, the position of the valve plate is reset to a horizontal state. The utility model effectively avoids the blockage of the pneumatic conveying pipeline caused by the air shutoff and the fluctuation of material output during production, and avoids equipment damage and production suspension caused by increased internal pressure of the system.

[0012] In order to solve the technical problem of how to realize the rotation of the valve plate, the utility model adopts the following technical solution, wherein the valve plate is movably connected to the discharge end of the partition via a rotating shaft;

[0013] The rotating shaft extends out of the pneumatic conveying pipeline and is connected to a driving member.

[0014] In order to solve the technical problem of how to realize the driving member, the utility model adopts the following technical solution, wherein the driving member is a motor or a rotating handle.

[0015] In order to solve the technical problem of how to design a feeding assembly when the feed opening of the air lock is square, the utility model adopts the following technical solution, wherein the feed opening is square;

[0016] The extension part comprises:

[0017] Two first expansion plates are respectively arranged at the feed end and the discharge end of the pneumatic conveying pipeline; the first expansion plates are arranged to be inclined outward relative to the side of the corresponding feed port; the first expansion plates are in the shape of an inverted isosceles trapezoid, and the lower base of the inverted isosceles trapezoid is an inwardly concave arc;

[0018] Two second expansion plates are respectively arranged between the two first expansion plates and located on both sides of the pneumatic conveying pipe. The second expansion plates are isosceles trapezoidal structures. The second expansion plates are inclined inward relative to the side edges of the corresponding feed ports. The two ends of the bottom of the first expansion plate along the axial direction of the pneumatic conveying pipe extend out of the corresponding ends of the feed port. The expansion part is welded by a triangular plate and a bending part, and the expansion part is welded by a trapezoidal plate. Both are simple to manufacture and have low cost.

[0019] In order to solve the technical problem of how to design a feeding assembly when the feed opening of the air lock is circular, the utility model adopts the following technical solution, wherein the feed opening is circular;

[0020] The extension part comprises:

[0021] Two third expansion plates are respectively arranged at the feed end and the discharge end of the pneumatic conveying pipeline; the third expansion plates are arranged to be inclined outward relative to the corresponding feed port; the third expansion plates are isosceles triangles, and the bottom plate of the isosceles triangle is an inwardly concave arc;

[0022] Two fourth expansion plates are respectively arranged between the two third expansion plates and located on both sides of the pneumatic conveying pipe, the fourth expansion plates are isosceles triangles, and the fourth expansion plates are inclined inwardly relative to the corresponding feed ports; two ends of the bottom of the fourth expansion plate along the axial direction of the pneumatic conveying pipe respectively extend out of the corresponding ends of the feed port;

[0023] Four fifth extension plates are arranged between the corresponding third extension plates and the fourth extension plates, and the fifth extension plates are arranged outwardly tilted relative to the corresponding feed openings; the fifth extension plates are inverted triangles, and the bottom plate of the inverted triangle is connected to the circular feed opening in an arc shape. The extension part is welded by a triangular plate and a bending part, and the extension part is welded by a trapezoidal plate, and the two are simple to manufacture and have low cost.

[0024] In order to further solve the technical problem of high material accumulation height on the partition, the utility model adopts the following technical solution: the shape of the expansion part is conical; the expansion part is a structure with a large upper part and a small lower part. The utility model adopts a variable diameter treatment for the discharge port of the air lock to reduce the material accumulation height. At the same time, the material enters the feed port through the air lock. Since the volume of the expansion part becomes larger, the material accumulation height here is reduced, which effectively copes with the blockage caused by short-term discharge fluctuations.

[0025] In order to solve the technical problem that the short length of the partition causes materials to fall on the partition and affect the flow of the lower airflow, the utility model adopts the following technical solution, where the two ends of the partition extend out of the expansion part respectively to ensure that the materials can fall on the partition without affecting the flow of the lower airflow.

[0026] In order to solve the technical problem of material blockage on the upper part of the partition when the lower airflow passes through, the utility model adopts the following technical solution: the area of ​​the lower material conveying channel is smaller than the area of ​​the upper material conveying channel, which ensures the passage of the lower airflow while maintaining a higher pressure on the upper part to facilitate material transportation.

[0027] In order to further solve the technical problem of material blockage on the upper part of the partition when the lower airflow passes through, the utility model adopts the following technical solution: the partition is horizontally arranged and located at 1 / 4 of the height of the pneumatic conveying pipe, which ensures the passage of the lower airflow while maintaining a higher pressure on the upper part to facilitate the conveying of materials.

[0028] In order to further solve the technical problem that the short length of the partition causes the material to fall on the partition and affect the flow of the lower air flow, the utility model adopts the following technical solution: the length of the partition is three times the diameter or side length of the feed port, ensuring that the material can fall on the partition without affecting the flow of the lower air flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional pneumatic conveying mechanism of the utility model. Figure 1 ;

[0030] Figure 2 yes Figure 1 Side view of

[0031] Figure 3 yes Figure 1 Cross-sectional view (valve plate closed);

[0032] Figure 4 yes Figure 1 Cross-sectional view (valve plate opened at a certain angle);

[0033] Figure 5 It is a schematic diagram of the valve of the utility model being closed;

[0034] Figure 6 It is a schematic diagram of the valve of the utility model being opened;

[0035] Figure 7 It is a three-dimensional pneumatic conveying mechanism of the utility model. Figure 2 ;

[0036] Figure 8 yes Figure 7 Side view of

[0037] Fig. 9 yes Figure 7 Cross-sectional view (valve plate closed);

[0038] Reference numerals:

[0039] 10. Pneumatic conveying mechanism;

[0040] 100 pneumatic conveying pipeline; 101 pneumatic conveying inlet; 102 pneumatic conveying outlet; 103 feeding component installation port;

[0041] 200 feed assembly; 210 feed port; 220 extension portion; 221 first extension board; 222 second extension board; 223 third extension board; 224 fourth extension board; 225 fifth extension board;

[0042] 300 anti-blocking assembly; 310 partition; 320 valve; 321 valve plate; 322 rotating shaft; 323 driving member. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations.

[0044] Example 1

[0045] like Figure 1-9 As shown, the pneumatic conveying mechanism 10 includes a pneumatic conveying pipeline 100 , a feed assembly 200 and an anti-blocking assembly 300 .

[0046] The pneumatic conveying pipeline 100 is preferably a round tube, one end of which is a pneumatic conveying inlet 101 , and the other end of which is a pneumatic conveying outlet 102 .

[0047] The pneumatic conveying pipeline 100 is provided with a feed assembly installation port 103. The feed assembly 200 is welded to the feed assembly installation port 103.

[0048] In one embodiment, the feed assembly 200 includes a feed port 210 and an expansion portion 220 arranged from top to bottom. Specifically, the feed port 210 may be in the shape of a square tube or a round tube.

[0049] In one embodiment, the expansion portion 220 extends into the pneumatic conveying pipe 100 .

[0050] To adapt to different air locks, the extension part 220 has two forms, namely: a circular interface extension part or a square interface extension part, which are respectively adapted to the circular air lock and the square air lock interface, see Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Fig. 9 The extension part 220 is welded by a triangular plate and a bending part, and the extension part 220 is welded by a trapezoidal plate, both of which are simple to manufacture and have low cost.

[0051] Specifically, Figure 1-3 As shown, the feed port 210 is a square. The extension portion 220 is a square interface, including two first extension plates 221 and two second extension plates 222 .

[0052] The two first extension plates 221 are respectively arranged at the feed end of the feed assembly installation port 103 of the pneumatic conveying pipeline 100 and welded to the first extension plates 221. The discharge end of the feed assembly installation port 103 of the pneumatic conveying pipeline 100 is welded to the first extension plates 221. The first extension plates 221 are arranged to be tilted outward relative to the side of the corresponding feed port 210. The first extension plates 221 are inverted isosceles trapezoids, and the lower bottom of the first extension plates 221 inverted isosceles trapezoids is an inwardly concave arc.

[0053] The second expansion plates 222 are welded to both sides of the feed assembly installation port 103 of the pneumatic conveying pipe 100. The two second expansion plates 222 are located between the two first expansion plates 221. The second expansion plates are isosceles trapezoidal structures, and the second expansion plates are tilted inward relative to the side of the corresponding feed port 210. The two ends of the bottom of the first expansion plate 221 along the axial direction of the pneumatic conveying pipe extend out of the corresponding ends of the feed port.

[0054] Specifically, Figure 7-9 As shown, the feed port 210 is square. The extension portion 220 is a circular interface, including two third extension plates 223 , two fourth extension plates 224 , and four fifth extension plates 225 .

[0055] The feed end of the feed assembly installation port 103 of the pneumatic conveying pipeline 100 is welded to the third expansion plate 223. The discharge end of the feed assembly installation port 103 of the pneumatic conveying pipeline 100 is welded to the third expansion plate 223. The third expansion plate 223 is tilted outward relative to the corresponding feed port 210. The third expansion plate 223 is preferably an isosceles triangle, and the bottom plate of the isosceles triangle third expansion plate 223 is an inwardly concave arc.

[0056] The two fourth extension plates 224 are respectively welded on both sides of the feed assembly installation port 103 of the pneumatic conveying pipe 100. The two fourth extension plates 224 are located between the two third extension plates 223. The fourth extension plate 224 is an isosceles triangle, and the fourth extension plate 224 is tilted inward relative to the corresponding feed port 210. The two ends of the bottom of the fourth extension plate 224 along the axial direction of the pneumatic conveying pipe extend out of the corresponding ends of the feed port 210.

[0057] The fifth expansion plate 225 is welded between the corresponding third expansion plate 223 and the fourth expansion plate 224, and the fifth expansion plate 225 is tilted outward relative to the corresponding feed port 210. The fifth expansion plate 225 is an inverted triangle, and the bottom plate of the inverted triangle fifth expansion plate 225 is connected to the circular feed port 210 in an arc shape.

[0058] The anti-blocking assembly 300 is installed in the pneumatic conveying pipeline 100. The anti-blocking assembly 300 includes a partition plate 310.

[0059] The partition 310 is installed in the pneumatic conveying pipeline 100. The partition 310 is located below the feed assembly 200, and the partition 310 divides the pneumatic conveying pipeline 100 into an upper conveying channel and a lower conveying channel. In one embodiment, the area of ​​the lower conveying channel is smaller than the area of ​​the upper conveying channel. Specifically, the partition 310 is arranged horizontally, and the partition 310 is located at 1 / 4 of the height of the pneumatic conveying pipeline. The partition 310 is located at 1 / 4 of the height of the conveying pipeline, which ensures that the airflow on the lower side passes through while maintaining a higher pressure on the upper part to facilitate the conveying of materials.

[0060] In one embodiment, two ends of the partition 310 extend out of the extension portion 220 respectively.

[0061] In one embodiment, the length of the partition 310 is three times the diameter or side length of the feed port 210, so as to ensure that the material can fall onto the partition without affecting the flow of the lower airflow.

[0062] When a blockage occurs above the partition, the conveying gas conveys the material at the rear end from below the partition. At this time, if the blockage of the upper material is loose, it will be carried away. If the blockage is tight, and the rear resistance is smaller after the rear material is unblocked, it is possible that the gas bypasses the upper material and passes directly from below, and the blockage above cannot be unblocked. In order to solve the above technical problems, a valve 320 is hinged at the discharge end of the partition 310. Specifically, the valve 320 includes a valve plate 321, a rotating shaft 322, and a driving member 323.

[0063] The valve plate 321 is movably connected to the discharge end of the partition plate, and is used to close or open the lower feeding channel. Specifically, the valve plate 321 is movably connected to the discharge end of the partition plate 310 via the rotating shaft 322; the rotating shaft 322 extends out of the pneumatic conveying pipeline 100 and is connected to the driving member 323. The valve plate 321 is hinged to the discharge end of the partition plate 310 via the rotating shaft 322; the rotating shaft 322 extends out of the pneumatic conveying pipeline 100; the driving member 323 is arranged outside the pneumatic conveying pipeline 100, and the driving member 323 is connected to the rotating shaft 322.

[0064] The driving member 323 may be an electric member, such as a motor, or a manual member, such as a rotating handle.

[0065] A valve plate 321 is arranged at the end of the partition, and the valve plate is mounted on a valve plate rotating shaft 322, and the valve plate rotating shaft overlaps with the end line of the partition, one end of the valve plate rotating shaft is rotatably fixed on the pipe wall of the pneumatic conveying pipeline 100, and the other end is rotatably passed through the pipe wall, and a driving member 323 for adjustment from the outside is formed on the outside. When working normally, the valve plate and the partition are parallel.

[0066] When a blockage occurs above the partition and the lower part is unobstructed, the regulating valve plate closes the lower channel to increase the pressure difference on both sides of the upper channel, forcing the gas to blow the blocked material from above the partition. After the upper part is unobstructed, the position of the valve plate is reset to a horizontal state.

[0067] In one embodiment, the valve plate is perpendicular to the partition when closed, and the partition is perpendicular to the wind direction, which will block the wind to a certain extent. A better solution is that the valve plate has a certain inclination angle when closed to direct the wind above the partition.

[0068] The utility model includes a pneumatic conveying pipeline 100, a feed assembly 200, and an anti-blocking assembly 300, which is a three-way pipeline structure for reducing blockage. The working principle of the utility model: The material enters the feed port 210 through the air lock. Since the volume of the expansion part 220 becomes larger, the material accumulation height here is reduced, which effectively copes with the blockage caused by short-term material discharge fluctuations. The partition 310 is located at 1 / 4 of the height of the conveying pipeline, which ensures that the airflow on the lower side passes through while maintaining a higher pressure on the upper part to facilitate the conveying of materials. The length of the partition 310 is three times the diameter or side length of the feed port, ensuring that the material can fall on the partition without affecting the flow of the lower airflow. After that, the airflow passes through the pneumatic conveying inlet 101 and the expansion part 220, and a part of the airflow takes the material forward upward, and the other part of the airflow passes under the partition to speed up the material transportation speed in the front section, and effectively copes with the excessive pressure in the pipeline caused by the obstruction of the airflow and the increase of pressure after the upper end is blocked; finally, the material is transported to the pneumatic conveying outlet 102.

[0069] The utility model improves the existing three-way structure, and uses the partition of the anti-blocking component to lift the material at the bottom of the three-way, so that the pneumatic conveying airflow can pass from the bottom to the front section to continue to transport the material. When the partition is blocked and the bottom is unblocked, the regulating valve plate closes the lower channel to increase the pressure difference on both sides of the upper channel to force the gas to blow the blocked material from above the partition. After the upper part is unblocked, the position of the valve plate is reset to a horizontal state. The utility model effectively avoids the blockage of the pneumatic conveying pipeline caused by the air shutoff and the fluctuation of material output during production, and avoids equipment damage and production suspension caused by the increase of internal pressure in the system.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. A pneumatic conveying mechanism, characterized in that: include: A pneumatic conveying pipeline, wherein a feed assembly is arranged on the pneumatic conveying pipeline; the feed assembly comprises a feed port and an expansion portion arranged from top to bottom; the expansion portion extends into the pneumatic conveying pipeline, and two ends of the bottom of the expansion portion along the axial direction of the pneumatic conveying pipe respectively extend out of the corresponding ends of the feed port; An anti-blocking component is arranged in the pneumatic conveying pipeline; The anti-blocking component includes a partition plate arranged in the pneumatic conveying pipeline and located below the feeding component, and the partition plate divides the pneumatic conveying pipeline into an upper conveying channel and a lower conveying channel.

2. The pneumatic conveying mechanism according to claim 1, characterized in that: The anti-blocking component also includes a valve plate movably connected to the end of the partition plate, which is used to close or open the lower material delivery channel.

3. The pneumatic conveying mechanism according to claim 2, characterized in that: The valve plate is movably connected to the discharge end of the partition via a rotating shaft; The rotating shaft extends out of the pneumatic conveying pipeline and is connected to a driving member.

4. The pneumatic conveying mechanism according to claim 3, characterized in that: The driving member is a motor or a rotating handle.

5. The pneumatic conveying mechanism according to claim 1, characterized in that: The feed opening is square; The extension part comprises: Two first expansion plates are respectively arranged at the feed end and the discharge end of the pneumatic conveying pipeline; the first expansion plates are arranged to be inclined outward relative to the side of the corresponding feed port; the first expansion plates are in the shape of an inverted isosceles trapezoid, and the lower base of the inverted isosceles trapezoid is an inwardly concave arc; Two second expansion plates are respectively arranged between the two first expansion plates and located on both sides of the pneumatic conveying pipe. The second expansion plates are isosceles trapezoidal structures. The second expansion plates are inclined inwardly relative to the side edges of the corresponding feed ports. The two ends of the bottom of the first expansion plate along the axial direction of the pneumatic conveying pipe respectively extend out of the corresponding ends of the feed port.

6. The pneumatic conveying mechanism according to claim 1, characterized in that: The feed opening is circular; The extension part comprises: Two third expansion plates are respectively arranged at the feed end and the discharge end of the pneumatic conveying pipeline; the third expansion plates are arranged to be inclined outward relative to the corresponding feed port; the third expansion plates are isosceles triangles, and the bottom plate of the isosceles triangle is an inwardly concave arc; Two fourth expansion plates are respectively arranged between the two third expansion plates and located on both sides of the pneumatic conveying pipe, the fourth expansion plates are isosceles triangles, and the fourth expansion plates are inclined inwardly relative to the corresponding feed ports; two ends of the bottom of the fourth expansion plate along the axial direction of the pneumatic conveying pipe respectively extend out of the corresponding ends of the feed port; Four fifth extension plates are arranged between the corresponding third extension plates and the fourth extension plates, and the fifth extension plates are arranged to be inclined outward relative to the corresponding feed ports; the fifth extension plates are inverted triangles, and the bottom plate of the inverted triangles is connected to the circular feed port in an arc shape.

7. The pneumatic conveying mechanism according to claim 1, characterized in that: Two ends of the partition respectively extend out of the extension portion.

8. The pneumatic conveying mechanism according to claim 1, characterized in that: The area of ​​the lower material conveying channel is smaller than the area of ​​the upper material conveying channel.

9. The pneumatic conveying mechanism according to claim 8, characterized in that: The partition is arranged horizontally and is located at 1 / 4 of the height of the pneumatic conveying pipeline.

10. The pneumatic conveying mechanism according to claim 1, characterized in that: The length of the partition is three times the diameter or side length of the feed port.

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