Anti-blocking vacuum pneumatic feeding system and intelligent control device thereof

Abstract

The utility model is suitable for vacuum pneumatic feeding technical field provides a kind of anti -blocking type vacuum pneumatic feeding system and its intelligent control device, including vacuum conveying pipe, the inside of vacuum conveying pipe front end is provided with helical guide vane, the outer surface of helical guide vane is attached with vacuum conveying pipe inner wall, the back of vacuum conveying pipe is provided with semicircle mounting ring, the back of vacuum conveying pipe is provided with the installation groove being communicated with its inside, installation groove is adapted with semicircle mounting ring, the inner ring of semicircle mounting ring is provided with embedding ring, the outer surface of embedding ring is attached with vacuum conveying pipe inner wall, the inner ring of embedding ring is provided with the filter screen structure of movable back and forth, the utility model passes through setting helical guide vane and the filter screen structure movable back and forth, make material more evenly dispersed in airflow, reduce pipe wall friction and local jam risk, to improve conveying concentration and speed, raw material can also reach screening effect simultaneously, further guarantee the use effect of raw material.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pneumatic feeding technology, and more specifically, it relates to an anti-clogging vacuum pneumatic feeding system and its intelligent control device. Background Technology

[0002] Vacuum pneumatic feeding systems utilize pressure differences in the airflow, such as suction and displacement of air, to transport materials over long distances in conveying pipelines. These systems are used to transport materials in various facilities, such as powder materials like clay, quartz, feldspar, and bauxite.

[0003] Existing pneumatic conveying systems have the following problems when in use: when conveying materials that are prone to moisture absorption, such as bauxite, the materials tend to stick and clump together on the inner wall of the pipe, resulting in a decrease in conveying efficiency or even blockage, which reduces the conveying concentration and speed of the materials conveyed by the pneumatic conveying system. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an anti-clogging vacuum pneumatic feeding system and its intelligent control device that reduces blockage during conveying in a vacuum conveying pipe.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A clog-resistant vacuum pneumatic feeding system includes a vacuum conveying pipe. A spiral guide vane is installed inside the front end of the vacuum conveying pipe, with its outer surface fitting against the inner wall of the pipe. The spiral guide vane has an inclination angle of 15°-30°. A semi-circular mounting ring is installed on the rear side of the vacuum conveying pipe, and an installation groove communicating with its interior is formed on the rear side of the pipe. The installation groove is adapted to the semi-circular mounting ring. An embedded ring is installed within the semi-circular mounting ring, with its outer surface fitting against the inner wall of the pipe. A reciprocating filter structure is installed within the inner ring of the embedded ring.

[0007] The present invention is further configured such that: the filter structure includes a built-in ring, the built-in ring is disposed in the inner ring of the embedded ring, the inner ring of the built-in ring is provided with a filter screen, a sliding groove is provided on the inner ring of the embedded ring, the outer side of the built-in ring extends into the sliding groove, and its upper and lower sides slide on the inner walls of the upper and lower sides of the sliding groove.

[0008] The present invention is further configured such that: a transmission cavity communicating with a sliding groove is provided inside the semi-circular mounting ring; a push plate is provided on the surface of the inner ring facing the transmission cavity; the other side of the push plate extends into the transmission cavity; a rotating shaft is rotatably connected to the bottom wall of the transmission cavity; a rotating disk is provided at the upper end of the rotating shaft; a T-shaped shaft is provided on the upper surface of the rotating disk and the lower side of the push plate; a rotating plate is rotatably sleeved between the two T-shaped shafts; and the T-shaped shaft on the rotating disk is located at the eccentric position of the rotating disk.

[0009] The present invention is further configured such that: a motor is provided on the outer surface of the semi-circular mounting ring, one end of the motor output shaft rotates through into the transmission cavity, a bevel gear is provided at the end of the motor output shaft located in the transmission cavity, and a bevel gear is also sleeved on the outer surface of the rotating shaft, and the two bevel gears mesh with each other.

[0010] The present invention is further configured such that the outer surface of the spiral guide vane is provided with a silicon carbide wear-resistant coating.

[0011] The present invention is further provided with sealing rubber gaskets on the surface of the semi-circular mounting ring that contacts the mounting groove and on the outer surface of the embedded ring.

[0012] The intelligent control device includes a variable frequency air compressor connected to a vacuum delivery pipe, a PLC controller for controlling the variable frequency air compressor, and a pressure sensor located inside the vacuum delivery pipe. The pressure sensor is connected to the PLC controller, and the PLC controller is electrically connected to the variable frequency air compressor.

[0013] The advantages of this utility model are:

[0014] This invention, by setting spiral guide vanes and a reciprocating filter structure, allows materials to be more evenly dispersed in the airflow, reducing pipe wall friction and the risk of local blockage, thereby improving conveying concentration and speed. At the same time, the filter structure can screen agglomerated raw materials, separating them and reducing blockage problems during conveying in the vacuum conveying pipe. It can also achieve the effect of screening raw materials, further ensuring the effectiveness of raw material use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an anti-clogging vacuum pneumatic feeding system according to this utility model;

[0016] Figure 2 This is a cross-sectional schematic diagram of the vacuum delivery tube of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the semi-circular mounting ring of this utility model;

[0018] Figure 4 This is a front view plan view of the internal structure of the embedded ring of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0020] Figure 6 This is a system block diagram of the intelligent control device of this utility model.

[0021] In the diagram: 1. Vacuum delivery pipe; 2. Spiral guide vane; 3. Silicon carbide wear-resistant coating; 4. Semi-circular mounting ring; 5. Mounting groove; 6. Embedded ring; 7. Internal ring; 8. Filter screen; 9. Sliding groove; 10. Transmission cavity; 11. Push plate; 12. Rotating shaft; 13. T-shaped shaft; 14. Rotating plate; 15. Motor; 16. Bevel gear; 17. Rotating disk. Detailed Implementation

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1-5 The present invention provides the following technical solution:

[0025] Specifically, it refers to a clog-resistant vacuum pneumatic feeding system, including a vacuum conveying pipe 1. The rear end of the vacuum conveying pipe 1 is connected to the feeding port of the feeding equipment. A spiral guide vane 2 is installed inside the front end of the vacuum conveying pipe 1. The outer surface of the spiral guide vane 2 is in contact with the inner wall of the vacuum conveying pipe 1. The inclination angle of the spiral guide vane 2 is 15°-30°. In use, the spiral guide vane 2 can generate a forced rotating airflow in the vacuum conveying pipe 1. The centrifugal force generated by the swirling flow can "throw" particles that were originally settling near the bottom or wall of the pipe towards the central area of ​​the pipe, so that they are resuspended in the high-speed airflow. This helps to break up any possible sediment layers or clusters, so that the material is more evenly dispersed in the airflow, reducing pipe wall friction and the risk of local blockage, thereby improving the conveying concentration and speed.

[0026] Furthermore, the outer surface of the spiral guide vane 2 is provided with a silicon carbide wear-resistant coating 3, which improves the service life of the spiral guide vane 2.

[0027] In this embodiment, if the vacuum delivery pipe 1 has a curved section, the spiral guide vane 2 can be set at the curved section of the vacuum delivery pipe 1, which helps to reduce deposition, adhesion and blockage, thereby improving the flow conditions in a specific section to a certain extent.

[0028] A semi-circular mounting ring 4 is provided on the rear side of the vacuum delivery tube 1. A mounting groove 5 communicating with the rear side of the vacuum delivery tube 1 is provided, and the mounting groove 5 is adapted to the semi-circular mounting ring 4. The semi-circular mounting ring 4 and the mounting groove 5 are fixed together by bolts. In use, the semi-circular mounting ring 4 is inserted into the mounting groove 5 and fits into it, with its outer surface flush with the outer surface of the vacuum delivery tube 1. Then, the semi-circular mounting ring 4 is fixed in the mounting groove 5 with bolts to prevent loosening. An embedded ring 6 is provided in the inner ring. The outer surface of the embedded ring 6 is in contact with the inner wall of the vacuum conveying pipe 1. When the semi-circular mounting ring 4 is installed in the mounting groove 5, the embedded ring 6 is inserted into the vacuum conveying pipe 1 and is in contact with the inner wall of the vacuum conveying pipe 1. The inner ring of the embedded ring 6 is provided with a filter screen structure that can move back and forth. In use, since the embedded ring 6 is located on the side of the vacuum conveying pipe 1 close to the feeding equipment, the raw materials entering the vacuum conveying pipe 1 can be screened by controlling the back and forth movement of the filter screen structure. The screened raw materials are then conveyed to the processing equipment by the airflow.

[0029] In this embodiment, sealing rubber gaskets are provided on the surfaces of the semicircular mounting ring 4 and the mounting groove 5 that are in contact with each other, as well as on the outer surface of the embedded ring 6. This increases the sealing between the semicircular mounting ring 4 and the mounting groove 5, and between the embedded ring 6 and the inner wall of the vacuum delivery pipe 1, thus minimizing the risk of leakage during use.

[0030] The filter structure includes an inner ring 7, which is located in the inner ring of an embedded ring 6. A filter screen 8 is provided in the inner ring of the inner ring 7. A sliding groove 9 is provided on the inner ring of the embedded ring 6. The outer side of the inner ring 7 extends into the sliding groove 9, and its upper and lower sides slide on the inner walls of the upper and lower sides of the sliding groove 9. A transmission cavity 10 communicating with the sliding groove 9 is provided in the semi-circular mounting ring 4. A push plate 11 is provided on the surface of the inner ring 7 facing the transmission cavity 10. The other side of the push plate 11 extends into the transmission cavity 10. A rotating shaft 12 is rotatably connected to the bottom wall of the transmission cavity 10. A rotating disk 17 is provided at the upper end of the rotating shaft 12. T-shaped shafts 13 are provided on the upper surface of the rotating disk 17 and the lower side of the push plate 11. A rotating plate 14 is rotatably sleeved between the two T-shaped shafts 13. The T-shaped shafts 13 on the rotating disk 17 are located at the eccentric position of the rotating disk 17.

[0031] When in use, the rotating shaft 12 is controlled to rotate, and the rotating disk 17 rotates synchronously with the rotating shaft 12. At this time, the T-shaped shaft 13 on the rotating disk 17 will exert a pushing or pulling force on the rotating plate 14, and the pushing plate 11 will drive the built-in ring 7 to move back and forth slightly in the sliding groove 9. The filter screen 8 moves synchronously with the built-in ring 7.

[0032] The pore size of the filter screen 8 is larger than the particle size of the conveyed raw material. During use, the filter screen 8 blocks the agglomerated parts of the raw material. At the same time, due to the back-and-forth movement of the filter screen 8, the filter screen 8 can form a screening effect on the agglomerated raw material, so that the agglomerated raw material is separated, reducing the problem of blockage during conveying in the vacuum conveying pipe 1. At the same time, it can also achieve the screening effect of the raw material, further ensuring the use effect of the raw material.

[0033] A motor 15 is mounted on the outer surface of the semi-circular mounting ring 4. One end of the output shaft of the motor 15 rotates through the transmission cavity 10. A bevel gear 16 is mounted on the end of the output shaft of the motor 15 located in the transmission cavity 10. A bevel gear 16 is also mounted on the outer surface of the rotating shaft 12. The two bevel gears 16 mesh with each other. When in use, the motor 15 starts, and the output shaft of the motor 15 can synchronously drive the bevel gear 16 to rotate. The rotating shaft 12 rotates synchronously under the meshing transmission of the two bevel gears 16.

[0034] In this embodiment, the sliding distance of the built-in ring 7 in the sliding groove 9 is relatively short, and one side of the built-in ring 7 will not slide to the inner ring of the embedded ring 6. Therefore, during use, the outer surface of the built-in ring 7 is always in the sliding groove 9, and the material will not flow directly through the gap between the outer surface of the built-in ring 7 and the inner ring of the embedded ring 6 during conveying.

[0035] Please see Figure 6 Based on the above scheme, this utility model designs a new technical solution: an intelligent control device, including a variable frequency air compressor connected to the vacuum delivery pipe 1, a PLC controller for controlling the variable frequency air compressor, and a pressure sensor installed in the vacuum delivery pipe 1. The pressure sensor is connected to the PLC controller, and the PLC controller is electrically connected to the variable frequency air compressor. In use, according to the pressure change in the vacuum delivery pipe 1, the PLC controller can control the negative pressure intensity of the variable frequency air compressor in the vacuum delivery pipe 1 in real time to realize adaptive pressure adjustment.

[0036] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A clog-resistant vacuum pneumatic feeding system, comprising a vacuum conveying pipe (1), characterized in that: The front end of the vacuum conveying pipe (1) is provided with a spiral guide plate (2). The outer surface of the spiral guide plate (2) is in contact with the inner wall of the vacuum conveying pipe (1). The inclination angle of the spiral guide plate (2) is 15°-30°. A semi-circular mounting ring (4) is provided on the rear side of the vacuum conveying pipe (1). An installation groove (5) communicating with the interior of the vacuum conveying pipe (1) is opened on the rear side. The installation groove (5) is adapted to the semi-circular mounting ring (4). An embedded ring (6) is provided on the inner ring of the semi-circular mounting ring (4). The outer surface of the embedded ring (6) is in contact with the inner wall of the vacuum conveying pipe (1). A filter structure that can move back and forth is provided on the inner ring of the embedded ring (6).

2. The anti-clogging vacuum pneumatic feeding system according to claim 1, characterized in that: The filter structure includes an inner ring (7), which is located in the inner ring of the embedded ring (6). The inner ring of the inner ring (7) is provided with a filter (8). A sliding groove (9) is provided on the inner ring of the embedded ring (6). The outer side of the inner ring (7) extends into the sliding groove (9), and its upper and lower sides slide on the inner walls of the upper and lower sides of the sliding groove (9).

3. The anti-clogging vacuum pneumatic feeding system according to claim 2, characterized in that: The semi-circular mounting ring (4) has a transmission cavity (10) that communicates with the sliding groove (9). A push plate (11) is provided on the surface of the inner ring (7) facing the transmission cavity (10). The other side of the push plate (11) extends into the transmission cavity (10). A rotating shaft (12) is rotatably connected to the bottom wall of the transmission cavity (10). A rotating disk (17) is provided at the upper end of the rotating shaft (12). T-shaped shafts (13) are provided on the upper surface of the rotating disk (17) and the lower side of the push plate (11). A rotating plate (14) is rotatably sleeved between the two T-shaped shafts (13).

4. The anti-clogging vacuum pneumatic feeding system according to claim 3, characterized in that: The T-shaped shaft (13) on the rotating disk (17) is located at the eccentric part of the rotating disk (17).

5. The anti-clogging vacuum pneumatic feeding system according to claim 3, characterized in that: The outer surface of the semi-circular mounting ring (4) is provided with a motor (15). One end of the output shaft of the motor (15) rotates and passes through the transmission cavity (10). The end of the output shaft of the motor (15) located in the transmission cavity (10) is provided with a bevel gear (16). The outer surface of the rotating shaft (12) is also fitted with a bevel gear (16). The two bevel gears (16) mesh with each other.

6. The anti-clogging vacuum pneumatic feeding system according to claim 1, characterized in that: The outer surface of the spiral guide vane (2) is provided with a silicon carbide wear-resistant coating (3).

7. The anti-clogging vacuum pneumatic feeding system according to claim 1, characterized in that: The surface of the semicircular mounting ring (4) that contacts the mounting groove (5) and the outer surface of the embedded ring (6) are provided with sealing rubber pads.

8. An intelligent control device based on the anti-clogging vacuum pneumatic feeding system according to any one of claims 1-7, comprising a variable frequency air compressor connected to the vacuum conveying pipe (1), a PLC controller for controlling the variable frequency air compressor, and a pressure sensor disposed in the vacuum conveying pipe (1), characterized in that: The air pressure sensor is connected to the PLC controller, and the PLC controller is electrically connected to the variable frequency air compressor.

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