Granule blowing and conveying device

Abstract

The utility model discloses a granule blowing and conveying device which comprises a blowing and conveying main body, the cross section of the inner side wall of the blowing and conveying main body is square, the blowing and conveying main body comprises a compression channel, an expansion channel and a granule feeding channel, and the compression channel, the expansion channel and the granule feeding channel are converged at a public cavity. And the granular material feeding channel is inclined towards the direction of the compression channel. The cross section of the inner side wall of the material blowing and conveying main body is square, namely, the inner channel is a flat channel, the flat channel provides more air and material contact surfaces, the compression channel is connected with the high-pressure fan, air is compressed through the compression channel, the flow speed is increased, and therefore the vacuum degree is formed in the public cavity according to the Bernoulli principle, and the material blowing and conveying efficiency is improved. The inclined granular material feeding channel enables the granular materials to rapidly enter the public cavity and move towards the expansion channel, reverse backflow is not generated in the moving process, and smooth conveying of the granular materials can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of positive pressure conveying of granular materials, and more specifically, to a granular material blowing and transporting device. Background Art

[0002] In the field of material transportation, the positive pressure transportation method is widely used due to its unique advantages. Positive pressure transportation mainly applies a positive pressure in the material tank to enable the material to be smoothly transported in the pipeline. The existing positive pressure transportation methods are as follows:

[0003] I. Completely transporting with positive pressure

[0004] In this method, the material tank is pressurized, and then the material is fed intermittently. Once the material enters the pipeline, the positive pressure will push the material to move along the pipeline to achieve transportation. However, this method has several significant disadvantages. First, it requires a pressure tank to provide positive pressure, which not only increases the complexity of the system, but also increases the floor area and manufacturing cost. Second, the intermittent feeding method means that the system cannot achieve continuous material transportation, thus reducing the working efficiency. In addition, in order to ensure the stability of positive pressure and transportation efficiency, the entire system also requires complex control and monitoring equipment.

[0005] II. Using a Venturi nozzle for transportation

[0006] In order to overcome the disadvantages of completely transporting with positive pressure, the method of using a Venturi nozzle is proposed. A Venturi nozzle is a specially designed nozzle that uses the low-pressure area generated when high-speed fluid passes through the nozzle to suck and transport materials. In this method, the Venturi nozzle is aimed at a large-diameter pipe for spraying, so that the material enters from the large-diameter pipe and is transported to a distance. However, this method also has some problems. First, in order to isolate gas and materials, a rotary isolation valve is required. This rotary isolation valve not only requires an additional motor to drive, but also increases the complexity and maintenance cost of the system. Second, since there is still a positive pressure blowing the material backward during blowing, this may cause the material to not smoothly enter the cavity to be transported, thus affecting the transportation efficiency. Summary of the Utility Model

[0007] In order to overcome the problems that the existing method of using a Venturi nozzle to transport materials is complex and there is still a positive pressure blowing the material backward during blowing, the utility model provides a granular material blowing and transporting device.

[0008] The technical solution of the utility model is described as follows:

[0009] A granular material blowing and transporting device includes a blowing and transporting main body. The cross-section of the inner side wall of the blowing and transporting main body is square. The blowing and transporting main body includes a compression channel, an expansion channel, and a granular material feeding channel. The compression channel, the expansion channel, and the granular material feeding channel converge at a common chamber. The granular material feeding channel is inclined towards the compression channel.

[0010] In the present utility model according to the above solution, the connection surface between the granular material feeding channel and the expansion channel is an arc surface.

[0011] In the present utility model according to the above solution, the granular material feeding channel is connected to a granular material inlet, and the granular material inlet is in the shape of an outward-expanded horn.

[0012] In the present utility model according to the above solution, the cross-section of the outer side wall at the end of the blowing and transporting main body is circular to connect an external pipeline.

[0013] In the present utility model according to the above solution, the area of the minimum cross-section of the compression channel is smaller than the area of the minimum cross-section of the expansion channel.

[0014] In the present utility model according to the above solution, the bottom surface of the compression channel and the bottom surface of the expansion channel are on the same horizontal plane.

[0015] In the present utility model according to the above solution, the top surface and the side surfaces of the compression channel gradually contract inward, and the top surface and the side surfaces of the expansion channel gradually contract outward.

[0016] In the present utility model according to the above solution, a first straight channel is connected to the end of the compression channel, and a second straight channel is connected to the end of the expansion channel.

[0017] In the present utility model according to the above solution, its beneficial effect lies in that the compression channel of the present utility model is connected to an external high-pressure blower. The air is compressed and the flow rate is increased through the compression channel, so as to form a vacuum degree in the common chamber according to Bernoulli's principle. The inclined granular material feeding channel enables the granular material to quickly enter the common chamber and move towards the expansion channel, and no reverse backflow occurs during the movement, realizing the smooth transportation of the granular material. The overall structure is simple, no additional power drive is required, and there will be no air return to hinder the transportation of the particulate matter.

[0018] The compression channel, the expansion channel, and the granular material feeding channel are all arranged in the blowing and transporting main body. The cross-section of the inner side wall of the blowing and transporting main body is square, that is, the internal channel is a flat channel. The flat channel provides more air-material contact surfaces, thus greatly improving the efficiency of blowing and transporting. Description of the Drawings

[0019] Figure 1Structural schematic diagram of the present utility model;

[0020] Figure 2 Cross-sectional view of the present utility model.

[0021] In the figure, each reference numeral is as follows:

[0022] 1. Blowing and transporting main body; 11. Compression channel; 12. Expansion channel; 13. Granular material feeding channel; 14. Common chamber; 15. Granular material inlet; 16. First straight channel; 17. Second straight channel; 2. Granular material. Specific implementation mode

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0024] It should be noted that the terms "including" and "having" and any variations thereof in the description and claims of the present utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices. Terms such as "arranged" should be understood in a broad sense. For example, it can be fixedly connected, detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. The orientations or positions indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "bottom", etc. are based on the orientations or positions shown in the drawings, and are only for the convenience of description and cannot be understood as a limitation to the technical solution of the present application.

[0025] In the existing material transportation, a Venturi nozzle is used for transportation. The Venturi nozzle is a specially designed nozzle that uses the low-pressure area generated when a high-speed fluid passes through the nozzle to suck in and transport materials. In this method, the Venturi nozzle is aimed at a large-diameter pipe for spraying, so that the materials enter from the large-diameter pipe and are transported to a distance. However, this method also has some problems. First of all, in order to isolate the gas and materials, a rotary isolation valve is required. This rotary isolation valve not only requires an additional motor to drive, but also increases the complexity and maintenance cost of the system. Secondly, since there is still a positive pressure blowing the materials in the reverse direction during blowing, this may cause the materials to not smoothly enter the cavity to be transported, thus affecting the transportation efficiency.

[0026] Such as Figure 1 - Figure 2As shown in the figure, this embodiment provides a granular material blowing and transporting device. The compression channel 11 is connected to an external high-pressure blower. Air is compressed through the compression channel 11 and its flow rate is increased, thereby creating a vacuum in the common chamber 14. The inclined granular material feeding channel 13 enables the granular material 2 to quickly enter the common chamber 14 and move towards the expansion channel 12 without reverse backflow during the movement, realizing the smooth transportation of the granular material 2. The overall structure is simple, without the need for additional power drive, and there is no air return to hinder the transportation of particulate matter.

[0027] Specifically, it includes a blowing and transporting main body 1. The cross-section of the inner wall of the blowing and transporting main body 1 is square. The blowing and transporting main body 1 includes a compression channel 11, an expansion channel 12, and a granular material feeding channel 13. The compression channel 11, the expansion channel 12, and the granular material feeding channel 13 converge at a common chamber 14. The granular material feeding channel 13 is inclined towards the compression channel 11.

[0028] The compression channel 11 is connected to an external high-pressure blower and is the power source of the device. When the high-pressure blower is started, a large amount of air is sucked into the compression channel 11 and compressed under the compression channel 11 to increase its flow rate and energy, providing sufficient power for the subsequent blowing process. This high-speed flowing air creates a negative pressure (vacuum) in the common chamber 14, providing power for the suction of the granular material 2.

[0029] The granular material feeding channel 13 is inclined towards the compression channel 11, ensuring that the granular material 2 can quickly and smoothly slide into the common chamber 14 without reverse backflow. At the same time, due to the negative pressure generated in the common chamber 14, the granular material 2 is quickly sucked in and moves towards the expansion channel 12 under the traction of the negative pressure.

[0030] The expansion channel 12 enables the granular material 2 to quickly disperse when leaving the common chamber 14, avoiding the accumulation and blockage of materials at the outlet.

[0031] The compression channel 11, the expansion channel 12, and the granular material feeding channel 13 are all arranged inside the blowing and transporting main body 1. The cross-section of the inner wall of the blowing and transporting main body 1 is square, that is, the internal channels are flat channels. The flat channels provide more air-material contact surfaces, thereby greatly improving the efficiency of blowing and transporting. Each channel is a flat channel, solving the problems of unstable internal air flow and difficulty in forming a planar air flow in traditional circular pipes.

[0032] In one embodiment, the connection surface between the granular material feed channel 13 and the expansion channel 12 is an arc surface. Based on the principle of fluid dynamics, a gradually changing forward inclined opening, namely an arc surface, is opened on the air flow surface behind the narrow part, which can smoothly guide the granular material 2 from the feed channel into the expansion channel 12, enabling the air flow to flow smoothly when passing through the narrow part, reducing the resistance and collision of the granular material 2 during the conversion process, and reducing the blockage and accumulation of the granular material 2 during the feeding process, thereby improving the transmission efficiency of the granular material 2.

[0033] In one embodiment, the granular material feed channel 13 is connected to the granular material inlet 15, and the granular material inlet 15 is in the shape of an outwardly expanding horn. The purpose of this setting is to increase the shape of the granular material inlet 15 and the area for the granular material 2 to enter the granular material inlet 15, so as to increase the intake amount of the granular material 2.

[0034] In one embodiment, the cross-section of the outer side wall of the end of the blowing and transporting main body 1 is circular to connect an external pipeline. The compression channel 11, the expansion channel 12, and the granular material feed channel 13 are arranged inside the blowing and transporting main body 1, and the cross-section of the inner side wall of the blowing and transporting main body 1 is square.

[0035] Viewed from the outside, the outer side wall of the end of the blowing and transporting main body 1 is cylindrical, which not only makes the whole main body visually more smooth, but also enhances its structural stability and compressive resistance.

[0036] The compression channel 11, the expansion channel 12, and the granular material feed channel 13 are all arranged inside the blowing and transporting main body 1. The cross-section of the inner side wall of the blowing and transporting main body 1 is square. The transition from the circular outside to the square inside solves the problems of unstable air flow inside the traditional circular pipeline and difficulty in forming a planar air flow. The square inner side wall provides a flatter flow space for the air flow, making the air flow more stable and uniform during the transmission process, thereby greatly improving the efficiency of blowing and transporting.

[0037] In one embodiment, the area of the minimum cross-section of the compression channel 11 is smaller than the area of the minimum cross-section of the expansion channel 12. When the air flow enters the expansion channel 12 through the compression channel 11, due to the increase in the cross-sectional area, the flow rate of the air flow will decrease and the pressure will decrease, providing stronger power for subsequent material suction.

[0038] The bottom surface of the compression channel 11 and the bottom surface of the expansion channel 12 are on the same horizontal plane. The purpose of this setting is to ensure that the air flow can maintain a stable flow state when passing through these two channels, avoiding air flow disorder caused by the height difference of the bottom surface. The top surface and the side surfaces of the compression channel 11 gradually contract inward, and the top surface and the side surfaces of the expansion channel 12 gradually contract outward. A gradually shrinking conical or funnel-shaped structure is formed at the compression channel 11, so that the air flow can be gradually compressed when passing through, and the flow velocity and pressure gradually increase. On the contrary, a gradually expanding structure is formed at the expansion channel 12. When the air flow passes through, due to the gradually increasing cross-sectional area, the flow velocity will decrease and the pressure will also decrease correspondingly, which helps the inhalation and transmission of the granular material 2.

[0039] A first straight channel 16 is connected to the end of the compression channel 11, and a second straight channel 17 is connected to the end of the expansion channel 12. The functions of the first straight channel 16 and the second straight channel 17 are to provide a stable inlet and outlet path for the air flow, and also help to adjust and control the flow rate and flow velocity of the air flow. By adjusting the diameter or length of the first straight channel 16 and the second straight channel 17, precise control of the air flow velocity and pressure can be achieved, so as to ensure that the granular material 2 can be blown to the destination in the best state.

[0040] It should be understood that for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

[0041] The above has described the patent of the present utility model with reference to the accompanying drawings. Obviously, the implementation of the patent of the present utility model is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the patent of the present utility model, or the concept and technical solution of the patent of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A granular material blowing and transporting device, comprising a blowing and transporting main body, characterized in that, The cross-section of the inner side wall of the blow material conveying body is square. The blow material conveying body includes a compression channel, an expansion channel, and a granular material feeding channel. The compression channel, the expansion channel, and the granular material feeding channel converge at a common chamber. The granular material feeding channel is inclined towards the compression channel.

2. The pellet blowing and transporting device according to claim 1, characterized in that, The connecting surface between the granular material feeding channel and the expansion channel is an arc surface.

3. A pellet blowing and transporting device according to claim 1 or 2, characterized in that, The granular material feeding channel is connected to a granular material inlet, and the granular material inlet is in the shape of an outwardly expanding horn.

4. A granular material blowing and transporting device according to claim 1 or 2, characterized in that, The cross-section of the outer side wall at the end of the blow material conveying body is circular.

5. A granular material blowing and transporting device according to claim 1 or 2, characterized in that, The area of the minimum cross-section of the compression channel is smaller than the area of the minimum cross-section of the expansion channel.

6. The pellet blowing and transporting device according to claim 5, characterized in that The bottom surface of the compression channel and the bottom surface of the expansion channel are on the same horizontal plane.

7. The pellet blowing and transporting device according to claim 6, characterized in that, The top surface and the side surfaces of the compression channel gradually contract inward, and the top surface and the side surfaces of the expansion channel gradually contract outward.

8. A granular material blowing and transporting device according to claim 1, 2, 6 or 7, characterized in that A first straight channel is connected to the end of the compression channel, and a second straight channel is connected to the end of the expansion channel.

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