Pneumatic powder conveying device

Abstract

The utility model discloses a powder pneumatic conveying device, including fan, airflow conveying channel and powder conveying channel, the fan output fixedly connected in airflow conveying channel first end, and airflow conveying channel tail end is connected with powder conveying channel, the powder conveying channel upper end fixed mounting has the feed port. This powder pneumatic conveying device passes the feed port and conveys the powder to the inside of powder conveying channel, then runs the fan, and the fan output produces the wind force, and the wind force that produces when passes through multiple vortex blades, will drive multiple vortex blades rotation, and airflow impact blade produces the torque, forms the free vortex, converts the airflow of axial flow into spiral motion, thereby not only can promote the powder of powder conveying channel inside to move forward, and can avoid airflow too big and cause the quality of powder of powder impact pipe wall, and through the vortex can avoid too much powder to adhere in the inside of powder conveying channel pipe wall.

Description

Technical Field

[0001] This utility model relates to the field of paint processing technology, specifically to a pneumatic conveying device for powder materials. Background Technology

[0002] Paint is a liquid or powder coating material widely used in construction, industry, and home furnishing. Its core function is to provide protection, decoration, or special functions to the surface of objects by forming a continuous and strong film. When processing paint, it is necessary to add powder materials such as pigments, fillers, and some functional additives. Powder pneumatic conveying is a technology that uses airflow to transport powder or granular materials in pipelines. It has advantages such as closed and dust-free environment, long conveying distance, and flexible layout.

[0003] A conveying device, disclosed in CN221796231U, particularly relates to a pneumatic flow-assisted conveying device for powder materials. The device includes: a support frame with a storage hopper fixedly connected to its top; a vent pipe connected to the outside of the storage hopper; a pressure tank connected to the top of the storage hopper; a pressure regulating pipe connected between the pressure tank and the vent pipe for introducing high-pressure gas from the pressure tank into the vent pipe; a feed pipe connected to the side of the storage hopper; a feed hopper connected to the upper end of the feed pipe; a jet pipe connected to the lower inner wall of the storage hopper, communicating with the vent pipe; an impeller connected to the end of the jet pipe; a discharge pipe connected to the bottom of the storage hopper; and a vibration assembly installed between the feed hopper and the feed pipe for vibrating the feed hopper during material discharge. This invention effectively prevents clogging of the feed hopper and significantly improves work efficiency through the vibration assembly and screen.

[0004] The device uses pneumatic flow to transport powder. However, when using airflow to transport powder, the device uses direct current pneumatics. Direct current pneumatics generates high-speed airflow. If the flow rate is too fast, the material will collide and break inside the pipe, affecting product quality. In addition, direct current pneumatics can easily cause powder to adhere to the inner wall of the pipe, which is not only difficult to clean, but also easy to cause pipe blockage.

[0005] To address the aforementioned issues, we have implemented an innovative design based on the existing structure of the pneumatic powder conveying device. Utility Model Content

[0006] The purpose of this utility model is to provide a pneumatic conveying device for powder, in order to solve the problem mentioned in the background art that when the device uses airflow to convey powder, it is a direct-flow pneumatic method. Direct-flow pneumatics will generate high-speed airflow, and the excessive flow rate will easily cause the material to collide and break in the pipeline, affecting product quality. In addition, direct-flow pneumatics will easily cause powder to adhere to the inner wall of the pipeline, which is not only difficult to clean, but also easy to cause pipeline blockage.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic conveying device for powder, comprising a blower, an airflow conveying channel, and a powder conveying channel. The output end of the blower is fixedly connected to the beginning of the airflow conveying channel, and the end of the airflow conveying channel is connected to the powder conveying channel. A feed inlet is fixedly installed at the upper end of the powder conveying channel. A concentric shaft is rotatably connected to the inner side of the airflow conveying channel, and vortex blades are equidistantly installed on the outer side of the concentric shaft. The vortex blades are arranged inside the airflow conveying channel.

[0008] Preferably, the vortex blades are provided in four sets, and the angle between the vortex blades and the airflow direction is 35°.

[0009] By adopting the above technical solution, the vortex blades, with an angle of 35° between themselves and the airflow direction, can cause the airflow to propel the powder in a vortex-like manner within the powder conveying channel.

[0010] Preferably, a first drive shaft is fixedly installed on the outer side of the concentric shaft, and the first drive shaft is connected to a second drive shaft via a toothed drive belt.

[0011] By adopting the above technical solution, the connecting shaft can be driven to rotate through the toothed transmission belt.

[0012] Preferably, a support block is fixed on the outside of the powder conveying channel, and a connecting shaft is rotatably connected to the inside of the support block, and a second transmission shaft is fixedly connected to the first end of the connecting shaft.

[0013] By adopting the above technical solution, the first gear on the outer side can be driven to rotate through the setting of the connecting shaft.

[0014] Preferably, a first gear is fixedly connected to the tail end of the connecting shaft, and the first gear is considered to be a half-tooth structure.

[0015] By adopting the above technical solution, the first gear of the half-gear can be intermittently driven to rotate the second gear.

[0016] Preferably, a rotating shaft is rotatably connected to the inner side of the support block, and a spiral spring is connected between the end of the rotating shaft and the support block. A second gear is fixedly connected to the outer side of the rotating shaft, and the second gear meshes with the outer first gear.

[0017] By adopting the above technical solution, the second gear can drive the rotating shaft to rotate, and the spiral spring can drive the rotating shaft to reset.

[0018] Preferably, a fixing rod is installed at equal intervals on the outer side of the rotating shaft, and a striking head is fixedly installed on the head of the fixing rod.

[0019] By adopting the above technical solution, the striking head can be set to strike the inside of the powder conveying channel, thereby generating a vibration.

[0020] Compared with the prior art, the beneficial effect of this utility model is that the powder pneumatic conveying device is equipped with:

[0021] 1. Pneumatic conveying structure: This structure conveys powder to the inner side of the powder conveying channel through the feed inlet. Then, the fan is run, and the fan output generates air force. When the generated air force passes through multiple sets of vortex blades, it drives the multiple sets of vortex blades to rotate. The airflow impacts the blades and generates torque, forming free vortices. This converts the axial airflow into spiral motion, which not only pushes the powder inside the powder conveying channel forward, but also avoids the powder from hitting the pipe wall due to excessive airflow, which would affect the quality of the powder. In addition, the vortex can prevent too much powder from adhering to the inner side of the powder conveying channel pipe wall, which would affect subsequent equipment cleaning.

[0022] 2. Anti-clogging structure: The rotation of the vortex blades in this structure drives the concentric shaft to rotate. The rotation of the concentric shaft drives the connecting shaft to rotate through the toothed transmission belt. The rotation of the connecting shaft drives the first gear on the outside to rotate. When the teeth of the first gear mesh with the second gear, the second gear will rotate, thereby causing the fixed rod on the outside of the rotating shaft to rotate. This causes the striking head to strike the outer wall of the powder conveying channel, thereby generating a vibration. The vibration will shake off the powder adhering to the inner wall of the pipe, thus preventing excessive powder adhesion and blockage of the inner side of the powder conveying channel.

[0023] Furthermore, when the first gear tooth surface separates from the second gear tooth surface, the rotating shaft will be reset by the elastic force of the spiral spring, thereby resetting the striking head and facilitating the next striking of the powder conveying channel. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall bottom view of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the airflow conveying channel of this utility model;

[0027] Figure 4 This is a three-dimensional structural diagram of the vortex blade of this utility model;

[0028] Figure 5 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0029] In the diagram: 1. Fan; 2. Airflow conveying channel; 3. Powder conveying channel; 4. Feed inlet; 5. Concentric shaft; 6. Vortex blades; 7. First drive shaft; 8. Toothed drive belt; 9. Second drive shaft; 10. Connecting shaft; 11. Support block; 12. First gear; 13. Second gear; 14. Rotating shaft; 15. Vortex spring; 16. Fixed rod; 17. Striking head. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-5 This utility model provides a technical solution: a pneumatic conveying device for powder, comprising:

[0032] Example 1: As Figures 1-4 The present invention provides a technical solution: a pneumatic conveying device for powder materials, comprising: a blower 1, an airflow conveying channel 2, and a powder conveying channel 3. The output end of the blower 1 is fixedly connected to the beginning end of the airflow conveying channel 2, and the end end of the airflow conveying channel 2 is connected to the powder conveying channel 3. A feed inlet 4 is fixedly installed at the upper end of the powder conveying channel 3. A concentric shaft 5 is rotatably connected to the inner side of the airflow conveying channel 2, and vortex blades 6 are equidistantly installed on the outer side of the concentric shaft 5. The vortex blades 6 are arranged inside the airflow conveying channel 2.

[0033] The vortex blades 6 are provided in four sets, and the angle between the vortex blades 6 and the airflow direction is 35°.

[0034] This structure conveys powder to the inside of the powder conveying channel 3 through the feed inlet 4. Then, the blower 1 is run, and the output end of the blower 1 generates wind. When the generated wind passes through multiple sets of vortex blades 6, it will drive the multiple sets of vortex blades 6 to rotate. The airflow impacts the vortex blades 6 to generate torque, forming a free vortex. This converts the axial flow of airflow into spiral motion. This not only pushes the powder inside the powder conveying channel 3 forward, but also avoids the powder from hitting the pipe wall due to excessive airflow, which would affect the quality of the powder. In addition, the vortex can prevent too much powder from adhering to the inside of the powder conveying channel 3 pipe wall, which would affect subsequent equipment cleaning.

[0035] Example 2: Figures 1-3 , Figure 5The present invention provides a technical solution: a pneumatic conveying device for powder, comprising: a first drive shaft 7 fixedly installed on the outer side of a concentric shaft 5, and the first drive shaft 7 being connected to a second drive shaft 9 via a toothed drive belt 8; a support block 11 fixedly installed on the outer side of a powder conveying channel 3, and a connecting shaft 10 rotatably connected to the inner side of the support block 11, and the first end of the connecting shaft 10 being fixedly connected to the second drive shaft 9; a first gear 12 fixedly connected to the tail end of the connecting shaft 10, and the first gear 12 being considered as a half-tooth structure; a rotating shaft 14 rotatably connected to the inner side of the support block 11, and a spiral spring 15 connected between the end of the rotating shaft 14 and the support block 11; a second gear 13 fixedly connected to the outer side of the rotating shaft 14, and the second gear 13 meshing with the outer first gear 12; and fixed rods 16 equidistantly installed on the outer side of the rotating shaft 14, and a striking head 17 fixedly installed at the head of the fixed rods 16.

[0036] The rotation of the vortex blades 6 in this structure drives the concentric shaft 5 to rotate. The rotation of the concentric shaft 5 drives the connecting shaft 10 to rotate through the toothed transmission belt 8. The rotation of the connecting shaft 10 drives the outer first gear 12 to rotate. When the tooth surface of the first gear 12 meshes with the second gear 13, the second gear 13 will rotate, thereby causing the fixed rod 16 on the outside of the rotating shaft 14 to rotate. This causes the striking head 17 to strike the outer wall of the powder conveying channel 3, thereby generating a vibration. The vibration will shake off the powder adhering to the inner side of the pipe wall, thus preventing excessive powder adhesion and blockage of the inner side of the powder conveying channel 3. When the tooth surface of the first gear 12 separates from the tooth surface of the second gear 13, the rotating shaft 14 will be reset by the elastic force of the vortex spring 15, thereby resetting the striking head 17, making it convenient to strike the powder conveying channel 3 again.

[0037] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0038] 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 pneumatic conveying device for powder, comprising a blower (1), an airflow conveying channel (2), and a powder conveying channel (3), wherein the output end of the blower (1) is fixedly connected to the beginning end of the airflow conveying channel (2), and the end end of the airflow conveying channel (2) is connected to the powder conveying channel (3), characterized in that, The powder conveying channel (3) is fixedly installed with a feed inlet (4) at the upper end. The air conveying channel (2) is rotatably connected with a concentric shaft (5), and vortex blades (6) are equidistantly installed on the outer side of the concentric shaft (5). The vortex blades (6) are located inside the air conveying channel (2).

2. The pneumatic conveying device for powder according to claim 1, characterized in that: The vortex blades (6) are provided in four sets, and the angle between the vortex blades (6) and the airflow direction is 35°.

3. The powder pneumatic conveying device according to claim 1, characterized in that: The first drive shaft (7) is fixedly installed on the outside of the concentric shaft (5), and the first drive shaft (7) is connected to the second drive shaft (9) through the toothed drive belt (8).

4. The pneumatic conveying device for powder according to claim 1, characterized in that: A support block (11) is fixed on the outside of the powder conveying channel (3), and a connecting shaft (10) is rotatably connected to the inside of the support block (11), and a second transmission shaft (9) is fixedly connected to the first end of the connecting shaft (10).

5. A pneumatic conveying device for powder according to claim 4, characterized in that: The tail end of the connecting shaft (10) is fixedly connected to a first gear (12), and the first gear (12) is considered to be a half-tooth structure.

6. The powder pneumatic conveying device according to claim 5, characterized in that: The inner side of the support block (11) is rotatably connected to a rotating shaft (14), and a spiral spring (15) is connected between the end of the rotating shaft (14) and the support block (11). The outer side of the rotating shaft (14) is fixedly connected to a second gear (13), and the second gear (13) meshes with the outer first gear (12).

7. A pneumatic conveying device for powder according to claim 6, characterized in that: A fixing rod (16) is equidistantly installed on the outer side of the rotating shaft (14), and a striking head (17) is fixedly installed on the head of the fixing rod (16).

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