A metering gas-delivered shell powder device and its operation method

Abstract

The present invention provides a metering gas-transported shell powder device and an operation method thereof. The housing of the present invention includes a feeding part, a metering part, a transfer part and a gas transmission part. The feeding part includes a funnel. The metering part includes a screw rod, a spiral blade is wound on the screw rod, and the spiral blade includes a large blade and a small blade. The screw rod is connected by a metering motor through a reducer drive, and a counter is connected to the reducer. The transfer part includes a rotating paddle, and the rotating paddle includes a central axis and a plurality of paddle blades. The central axis is connected by a transfer motor drive, and a rubber blade is fixed on the outer edge of the paddle blade. The edge of the rubber blade is provided with a folded edge, and the folded edge contacts the cylindrical housing, and the bent sharp corner of the folded edge faces the rotation direction of the rotating paddle. The gas transmission part includes a gas transmission pipeline, and a material receiving port is opened at the top of the gas transmission pipeline, and the material receiving port is located below the rotating paddle. One end of the gas transmission pipeline is an air inlet, and a high-pressure blower is sealed on the air inlet. The other end of the gas transmission pipeline is a discharge port.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a powder material transmission system, in particular to a metering air-transporting shell powder device and an operation method thereof. Background Art

[0002] Since rice husks and bamboo powder are lightweight materials, they can be transported by air according to their characteristics. However, existing air conveying equipment has simple functions and cannot perform weighing, automatic sieving and other functions. If it cannot measure, it cannot be directly processed, and it still needs to be weighed before mixing and processing according to the appropriate proportion. The inability to sieve causes a large amount of impurities to remain in the conveying pipeline, causing pipeline pollution and further contamination of materials. It is also easy to cause pipeline blockage and affect transportation. Manual cleaning and maintenance are required from time to time, wasting labor resources. In addition, existing air conveying equipment cannot effectively solve the problem of high-pressure wind blowing up the top of the material, which seriously affects the placement and transportation of powder materials. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to propose a metering air-transporting shell powder device and its operation method which integrates multiple functional structures and realizes a complete process line of automatic screening, metering, transfer and air transmission.

[0004] The object of the present invention can be achieved through the following technical solutions: a metering air-transporting shell powder device, comprising a casing, the casing comprising a feeding part, a metering part, a transfer part and a gas transmission part from top to bottom, a screening mechanism is arranged on the feeding part, the feeding part comprises a trumpet-shaped funnel, the large trumpet mouth of the funnel faces upward, and the small mouth faces downward to connect with the metering part, the metering part comprises a spiral rod located in a rectangular casing, spiral blades are wound on the spiral rod, the spiral blades comprise connected large-section blades and small-section blades, the large-section blades are located below the small mouth of the funnel, the spiral rod is connected by a metering motor through a reducer, a counter is connected to the reducer, the transfer part comprises a cylindrical casing A rotating paddle in a shell, wherein the small blade section is located above the rotating paddle, the rotating paddle comprises a central axis and a plurality of paddles uniformly distributed in a radial shape, the central axis is connected by a transfer motor drive, a gap is left between the outer edge of the paddle and the cylindrical shell, a rubber blade is fixed on the outer edge of the paddle, a folded edge is arranged on the edge of the rubber blade, the folded edge contacts the cylindrical shell, the bent sharp corner of the folded edge faces the rotation direction of the rotating paddle, the air transmission part comprises an air transmission pipeline, a material receiving port is opened at the top of the air transmission pipeline, the material receiving port is located below the rotating paddle, one end of the air transmission pipeline is an air inlet, a high-pressure blower is sealed on the air inlet, and the other end of the air transmission pipeline is a discharge port.

[0005] In the metering air conveying shell powder device, the central axis of the rotating paddle and several paddles are all metal structures, and the rubber blades are made of highly wear-resistant rubber products. There are at least 4 paddles within the 180-degree angle range of the rotating paddle to ensure the sealing effect of the cylindrical casing and ensure smooth material drop.

[0006] In the above-mentioned metering air-conveyed shell powder device, the screening mechanism comprises a net bag covered on the large bell mouth of the funnel, the center of the net bag is connected to a lifting rod, and the lifting rod is driven and connected by a screening cylinder.

[0007] Shell powder materials may contain large impurities and wet powder clumps. Once large impurities and wet powder clumps enter the gas pipeline, high-pressure gas cannot blow them out in time, thereby polluting the gas pipeline. Over time, it is easy to cause blockage, which requires irregular manual maintenance, wastes labor, delays production, and affects the quality of the output material.

[0008] In the above-mentioned metering air-conveyed shell powder device, the width of the large blade section is 1.5 to 3 times the width of the small blade section.

[0009] In the above-mentioned metering air conveying shell powder device, both ends of the screw rod are sleeved with bearing 1, and the bearing 1 is fixed on the side wall of the housing. The self-rotation movement of the screw rod is realized by the bearing.

[0010] In the above-mentioned metering air-conveyed shell powder device, the length of the rubber blade is less than 1 / 3 of the length of the paddle, and the folded edge is in contact with the cylindrical casing for a length of 2 cm.

[0011] In the above-mentioned metering air-conveyed shell powder device, the paddle blades and the rubber blades are assembled and fixedly connected by bolts.

[0012] In the above-mentioned metering air-conveyed shell powder device, both ends of the central axis are sleeved with bearing 2, and the bearing 2 is fixedly mounted on the side wall of the casing.

[0013] The operation method of the metering gas-feeding shell powder device comprises the following steps:

[0014] 1) Pour the shell powder material into the funnel at a certain mass and speed continuously;

[0015] 2) Shell powder material falls into the large blade section of the spiral rod from the small opening of the funnel, and the metering motor is started to drive the spiral blade to rotate, so that the shell powder material gradually enters the small blade section from the large blade section. Since the large blade section is wider than the small blade section, that is, the material capacity of the large blade section is greater than the material capacity of the small blade section, the shell powder material fills the small blade section during the rotating feeding to avoid gaps. The counter records a number for each revolution of the reducer, and the material capacity of the small blade section multiplied by the count value is the total feeding amount;

[0016] 3) The shell powder material is rotated out by the spiral blade and falls between the blades of the rotating paddle. The transfer motor is started to drive the rotating paddle to rotate in a directional manner. The folded edge of the rubber blade forms a soft sealing contact with the casing. When the shell powder material rotates from the top to the bottom, it falls into the gas transmission pipeline;

[0017] 4) Start the high-pressure fan and use the high-pressure wind to blow the shell powder material to the discharge port. Use the rubber blades and the casing to form a seal to prevent the high-pressure wind from rushing up to the funnel through the gap between the blades and the casing. The wind pressure holds up the shell powder material and prevents it from falling.

[0018] In the operating method of the above-mentioned metering air-conveyed shell powder device, before step 1) feeding, the screening cylinder is first started to pull the lifting rod to drive the net bag to lift up and shake off the large particles of impurities and wet powder clumps in the net surface to the outside, clean the net surface to avoid clogging of the mesh holes, and then the screening cylinder pulls the lifting rod to reset the net bag to facilitate feeding.

[0019] Compared with the prior art, the metering gas-conveyed shell powder device and its operation method have the following advantages:

[0020] 1. Through the regular action of the screening mechanism, impurities can be cleaned before feeding, so that the material can be fed smoothly;

[0021] 2. The metering structure can realize material mass delivery calculation at any time, effectively control the material weight and directly participate in the next process operation, saving operation time and steps, and reflecting the concept of automated management;

[0022] 3. The transfer structure can effectively prevent the problem of high-pressure wind rising up to top up the material, thus ensuring smooth material drop. As long as the material can fall smoothly into the gas pipeline, it can be sent to the discharge port by wind of a certain pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of the metering air-conveyed shell powder device.

[0024] In the figure, 1. screening cylinder; 2. lifting rod; 3. net bag; 4. funnel; 5. screw rod; 6. large blade section; 7. small blade section; 8. metering motor; 9. paddle; 10. bolt; 11. rubber blade; 12. gas pipeline. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] like Figure 1As shown, the metering air-transporting shell powder device comprises a casing, which comprises a feeding part, a metering part, a transfer part and a gas transmission part from top to bottom. A screening mechanism is arranged on the feeding part. The feeding part comprises a trumpet-shaped funnel 4, the large trumpet mouth of the funnel 4 faces upward, and the small mouth faces downward to connect with the metering part. The metering part comprises a screw rod 5 located in a rectangular casing, and spiral blades are wound on the screw rod 5. The spiral blades comprise a large section blade 6 and a small section blade 7 connected with each other. The large section blade 6 is located below the small mouth of the funnel 4. The screw rod 5 is connected by a metering motor 8 through a reducer, and a counter is connected to the reducer. The transfer part comprises a rotating paddle located in a cylindrical casing. The small blade section 7 is located above the rotating paddle. The rotating paddle includes a central axis and a plurality of paddles 9 evenly distributed in a radial shape. The central axis is connected by a transfer motor drive. A gap is left between the outer edge of the paddle 9 and the cylindrical casing. A rubber blade 11 is fixed on the outer edge of the paddle 9. A folded edge is provided on the edge of the rubber blade 11. The folded edge contacts the cylindrical casing. The bent sharp corner of the folded edge faces the rotation direction of the rotating paddle. The gas transmission part includes a gas transmission pipeline 12. A material receiving port is opened at the top of the gas transmission pipeline 12. The material receiving port is located below the rotating paddle. One end of the gas transmission pipeline 12 is an air inlet. The air inlet is sealed and connected to a high-pressure blower. The other end of the gas transmission pipeline 12 is a discharge port.

[0027] In the metering air conveying shell powder device, the central axis of the rotating paddle and a plurality of paddle blades 9 are metal structures, and the rubber blades 11 are highly wear-resistant rubber products. There are at least 4 paddle blades 9 within the 180-degree angle range of the rotating paddle to ensure the sealing effect of the cylindrical housing and ensure smooth material drop.

[0028] The screening mechanism comprises a net bag 3 which is covered on the large bell mouth of the funnel 4. The center of the net bag 3 is connected to a lifting rod 2 which is driven and connected by a screening cylinder 1.

[0029] The shell powder material may contain large impurities and wet powder clumps. Once the large impurities and wet powder clumps enter the gas pipeline 12, the high-pressure gas cannot blow them out in time, thereby polluting the gas pipeline 12. Over time, it is easy to cause blockage, which requires irregular manual maintenance, wastes labor, delays production, and affects the quality of the output material.

[0030] The width of the large blade section 6 is 1.5 to 3 times the width of the small blade section 7 .

[0031] Both ends of the screw rod 5 are sleeved with bearing 1, and the bearing 1 is fixed on the side wall of the casing. The self-rotation movement of the screw rod 5 is realized by the bearing.

[0032] The length of the rubber blade 11 is less than 1 / 3 of the length of the paddle 9, and the folded edge is in contact with the cylindrical casing for 2 cm.

[0033] The paddle blade 9 and the rubber blade 11 are assembled and fixedly connected by bolts 10 .

[0034] Both ends of the central shaft are sleeved with bearing 2, and the bearing 2 is fixedly mounted on the side wall of the casing.

[0035] The operation method of the metering gas-feeding shell powder device comprises the following steps:

[0036] 1) Pour the shell powder material into the funnel 4 at a certain mass and speed continuously;

[0037] 2) Shell powder material falls into the large blade 6 of the spiral rod 5 from the small opening of the funnel 4, and the metering motor 8 is started to drive the spiral blade to rotate, so that the shell powder material gradually enters the small blade 7 from the large blade 6. Since the large blade 6 is wider than the small blade 7, that is, the material capacity of the large blade 6 is greater than the material capacity of the small blade 7, the shell powder material fills the small blade 7 during the rotary feeding to avoid gaps. The counter records a number for each revolution of the reducer, and the material capacity of the small blade 7 multiplied by the count value is used to obtain the total feeding amount;

[0038] 3) The shell powder material is rotated out by the spiral blade and falls between the blades 9 of the rotating paddle. The transfer motor is started to drive the rotating paddle to rotate in a directional manner. The folded edge of the rubber blade 11 forms a soft sealing contact with the machine casing. When the shell powder material rotates from the top to the bottom, it falls into the gas transmission pipeline 12;

[0039] 4) Start the high-pressure blower and use the high-pressure wind to blow the shell powder material to the discharge port, and use the rubber blades 11 to form a seal with the casing to prevent the high-pressure wind from passing through the gap between the blades 9 and the casing to the funnel 4. The wind pressure holds the shell powder material from falling.

[0040] Before feeding in step 1), the screening cylinder 1 is first started to pull the lifting rod 2 to drive the net bag 3 to lift up and shake off the large particles of impurities and wet powder in the net surface to the outside, clean the net surface to avoid clogging of the mesh, and then the screening cylinder 1 pulls the lifting rod 2 to reset the net bag 3 to facilitate feeding.

[0041] Compared with the prior art, the metering gas-conveyed shell powder device and its operation method have the following advantages:

[0042] 1. Through the regular action of the screening mechanism, impurities can be cleaned before feeding, so that the material can be fed smoothly;

[0043] 2. The metering structure can realize material mass delivery calculation at any time, effectively control the material weight and directly participate in the next process operation, saving operation time and steps, and reflecting the concept of automated management;

[0044] 3. The transfer structure can effectively prevent the problem of high-pressure wind rising up to top up the material, thereby ensuring smooth material drop. As long as the material can smoothly fall into the gas transmission pipeline 12, it can be sent to the discharge port by wind of a certain pressure.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0046] Although the present invention uses the terms such as screening cylinder 1, lifting rod 2, net bag 3, funnel 4, screw rod 5, large blade 6, small blade 7, metering motor 8, paddle 9, bolt 10, rubber blade 11, gas pipeline 12, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A metering gas-delivered shell powder device, comprising a housing, characterized in that: The casing comprises a feeding part, a metering part, a transfer part and a gas transmission part from top to bottom. A screening mechanism is arranged on the feeding part. The feeding part comprises a trumpet-shaped funnel. The large trumpet mouth of the funnel faces upward, and the small mouth faces downward to connect with the metering part. The metering part comprises a spiral rod located in a rectangular casing. A spiral blade is wound on the spiral rod. The spiral blade comprises a large blade section and a small blade section connected with each other. The large blade section is located below the small mouth of the funnel. The spiral rod is connected by a metering motor through a reducer. A counter is connected to the reducer. The transfer part comprises a rotating paddle located in a cylindrical casing. The small blade section is located above the rotating paddle. The rotating paddle comprises a central axis and a plurality of paddles evenly distributed in a radial shape. The central axis is driven by a rotating The paddle is connected to the cylindrical casing by a motor drive, a gap is left between the outer edge of the paddle and the cylindrical casing, a rubber blade is fixed on the outer edge of the paddle, a folded edge is arranged on the edge of the rubber blade, the folded edge contacts the cylindrical casing, the bent sharp corner of the folded edge faces the rotation direction of the rotating paddle, the air transmission part comprises an air transmission pipeline, a material receiving port is opened at the top of the air transmission pipeline, the material receiving port is located below the rotating paddle, one end of the air transmission pipeline is an air inlet, a high-pressure blower is sealed on the air inlet, and the other end of the air transmission pipeline is a discharge port; the screening mechanism comprises a net bag covered on the large bell mouth of the funnel, the center of the net bag is connected to a lifting rod, and the lifting rod is connected by a screening cylinder drive; the paddle and the rubber blade are fixedly connected by bolt assembly.

2. The device for metering gas-feeding shell powder according to claim 1, characterized in that: The width of the large blade section is 1.5 to 3 times the width of the small blade section.

3. The metering gas-feeding shell powder device according to claim 1, characterized in that: Both ends of the spiral rod are sleeved with bearing 1, and the bearing 1 is fixed on the side wall of the casing.

4. The device for conveying shell powder by metering gas according to claim 1, characterized in that: The length of the rubber blade is less than 1 / 3 of the length of the paddle, and the folded edge is in contact with the cylindrical casing for a length of 2 cm.

5. The metering gas-feeding shell powder device according to claim 1, characterized in that: Both ends of the central shaft are sleeved with bearing 2, and the bearing 2 is fixedly mounted on the side wall of the housing.

6. The operating method of the metering gas-feeding shell powder device according to claim 1 is characterized in that: The following steps are involved: 1) Pour the shell powder material into the funnel at a certain mass and speed continuously; 2) Shell powder material falls into the large blade section of the spiral rod from the small opening of the funnel, and the metering motor is started to drive the spiral blade to rotate, so that the shell powder material gradually enters the small blade section from the large blade section. Since the large blade section is wider than the small blade section, that is, the material capacity of the large blade section is greater than the material capacity of the small blade section, the shell powder material fills the small blade section during the rotating feeding to avoid gaps. The counter records a number for each revolution of the reducer, and the material capacity of the small blade section multiplied by the count value is the total feeding amount; 3) The shell powder material is rotated out by the spiral blade and falls between the blades of the rotating paddle. The transfer motor is started to drive the rotating paddle to rotate in a directional manner. The folded edge of the rubber blade forms a soft sealing contact with the machine casing. The shell powder material falls into the gas transmission pipeline when it rotates from top to bottom; 4) Start the high-pressure fan and use the high-pressure wind to blow the shell powder material to the discharge port. Use the rubber blades and the casing to form a seal to prevent the high-pressure wind from rushing up to the funnel through the gap between the blades and the casing. The wind pressure holds up the shell powder material and prevents it from falling.

7. The operating method of the metering air conveying shell powder device according to claim 6 is characterized in that: Before feeding in step 1), start the screening cylinder to pull up the lifting rod to drive the net bag to lift up and shake off the large particles of impurities and wet powder in the net surface to the outside, clean the net surface to avoid clogging of the mesh, and then the screening cylinder pulls up the lifting rod to reset the net bag to facilitate feeding.

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