A wind closing auger device

Abstract

The utility model provides a kind of air leakage screw conveyer device, the utility model relates to screw conveyer mechanism technical field, including screw conveyer assembly, driving mechanism, protection subassembly and negative pressure component;The screw conveyer assembly includes the shell extending along left and right direction and the screw conveyer rod piece extending along left and right direction;By the setting of negative pressure component, in negative pressure component, shell and negative pressure storehouse interior pressure is lower than external atmospheric pressure, if feeding and discharging place are completely open, outside air will rush in a large amount, it will lead to unable to maintain the required vacuum degree, and the air that rushes in can interfere with the stable flow of material, even cause blockage, and in the design, second helical blade segment cooperates pressure door, and a dynamic material seal is formed in shell interior jointly.The material with high filling degree itself becomes the barrier to prevent air from entering, achieving the effect of physical sealing, thereby ensuring the negative pressure state inside the system.

Description

Technical Field

[0001] This utility model relates to the technical field of auger conveying mechanisms, specifically a closed-loop auger device. Background Technology

[0002] A screw conveyor is a machine that uses a motor to drive a rotating screw to push materials to achieve the purpose of conveying. It can convey horizontally, inclined, or vertically, and has advantages such as simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and suitability for enclosed transport. The screw conveyor has helical blades welded to its rotating shaft; the blade shape varies depending on the material being conveyed, including solid, ribbon, and paddle types. At the end of the screw shaft in the direction of material movement, there is a thrust bearing to counteract the axial force exerted on the screw by the material. For longer conveyors, intermediate hanger bearings should be added.

[0003] Currently, industries such as feed and alcohol use hammer mills to grind corn or cassava as raw materials. With the expansion of production capacity and considerations for energy conservation and emission reduction, the grinding process has gradually shifted from the previous high-negative-pressure grinding process to a low-negative-pressure grinding process. The key to the low-negative-pressure grinding process is ensuring a stable low-negative-pressure environment within the settling chamber. The settling chamber is connected to a discharge auger, and conventional auger blades have a large gap with the machine casing, resulting in a system air leakage rate as high as 15%. This technical bottleneck not only affects the stability of the low-negative-pressure environment but also directly restricts the energy efficiency of the entire process system. Utility Model Content

[0004] The purpose of this invention is to provide a closed-loop auger device, which aims to solve the problem that there is a large gap between the conventional auger blades and the casing in the prior art, resulting in a system air leakage rate of up to 15%, which not only affects the stability of the micro-negative pressure environment, but also directly restricts the energy efficiency performance of the entire process system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: the air-locking auger device includes an auger assembly, a drive mechanism, a protective assembly, and a negative pressure assembly; The auger assembly includes a housing extending in the left-right direction and an auger rod extending in the left-right direction. The left end of the auger rod passes through the housing and is fixedly connected to the output shaft of the drive mechanism via a coupling; The protective component is installed at the end of the housing away from the drive mechanism, and a discharge port is provided at the bottom of the protective component; The housing is fixed with a feed inlet near the top of the drive mechanism, and the discharge port of the negative pressure component is connected to the feed inlet.

[0006] Preferably, the auger rod includes a first helical blade segment, a second bladeless segment, and a third helical blade segment; The left end of the first helical blade segment protrudes from the housing and is fixedly connected to the drive mechanism; The right end of the first helical blade segment is fixedly connected to the second non-helical blade segment, and the right end of the second non-helical blade segment is fixedly connected to the third helical blade segment.

[0007] Preferably, a pressure door is hinged to the end of the housing away from the drive mechanism, and the protective assembly is sleeved on the outside of the pressure door; The pressure gate and the discharge port correspond to each other vertically.

[0008] Preferably, a buffer shell is fixed to the middle top of the housing, and the buffer shell corresponds to the second bladeless segment above and below it.

[0009] Preferably, the protective assembly includes a protective cover and an inspection valve; The protective cover is installed at the end of the housing away from the drive mechanism, and the pressure gate is located inside the protective cover; The inspection valve is installed on the right side of the protective cover.

[0010] Preferably, the end of the housing away from the drive mechanism is provided with an inclined surface that slopes downward to the left, and the pressure gate is mounted on the inclined surface.

[0011] Preferably, the negative pressure assembly includes a negative pressure chamber and a fan; The negative pressure chamber is installed above the auger rod, and the fan is fixedly installed on the outer wall of the negative pressure chamber.

[0012] The beneficial effects are: 1. Through the setting of the negative pressure component, the internal pressure of the shell and negative pressure chamber is lower than the external atmospheric pressure. If the inlet and outlet are completely open, a large amount of outside air will rush in, which will make it impossible to maintain the required vacuum level. The rushing air will also interfere with the stable flow of materials and even cause blockage. In this design, the second bladeless segment, together with the pressure gate, forms a dynamic material seal inside the shell. The highly filled material itself becomes a barrier to prevent air from entering, achieving a physical sealing effect, thereby ensuring the negative pressure state inside the system.

[0013] 2. By setting up the second bladeless section and the pressure gate, the material accumulates in the second bladeless section. Then, under the throttling effect of the pressure gate, the entire conveying process becomes denser and more continuous, reducing pulsation and fluctuation, significantly improving the filling coefficient, and thus enhancing the stability and maximum conveying capacity of the conveying. Attached Figure Description

[0014] Figure 1 This is a structural diagram illustrating the usage process of this utility model; Figure 2This is a schematic diagram of the connection between the negative pressure component and the inlet of the housing in this utility model.

[0015] In the diagram: 1. Housing; 2. Drive mechanism; 3. Protective components; 301. Protective cover; 302. Inspection valve; 4. Coupling; 5. Pressure valve; 6. Discharge port; 7. Feed port; 8. Screw rod; 801. First spiral blade segment; 802. Second segment without spiral blade; 803. Third spiral blade segment; 9. Buffer housing; 10. Negative pressure components; 1001. Negative pressure chamber; 1002. Fan. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0017] A closed-loop auger device is mainly used to achieve a highly efficient and dynamic "airtight airlock (closed-loop)" function inside the housing 1 without stopping the machine or interrupting the conveying, thereby greatly improving the efficiency and stability of the entire negative pressure air conveying system.

[0018] In this embodiment, the closed-loop auger device includes an auger assembly, a drive mechanism 2, a protective assembly 3, and a negative pressure assembly 10. The auger assembly includes a housing 1 extending in the left-right direction and an auger rod 8 extending in the left-right direction. By setting the negative pressure assembly 10, the material can be in a negative pressure state so that the pressure inside the housing 1 and the negative pressure assembly 10 is lower than the external atmospheric pressure, thus avoiding interference with the flow of material.

[0019] like Figure 2 As shown, the housing 1 has a feed inlet 7 fixed at the top near the drive mechanism 2. The discharge port of the negative pressure component 10 is connected to the feed inlet 7, so that the material in the negative pressure component 10 can be poured into the housing 1 from the feed inlet 7 and conveyed under the action of the auger rod 8.

[0020] Specifically, the negative pressure assembly 10 includes a negative pressure chamber 1001 and a fan 1002. The negative pressure chamber 1001 is installed above the auger rod 8, and the fan 1002 is fixedly installed on the outer wall of the negative pressure chamber 1001 to create a negative pressure in the negative pressure chamber 1001, causing the material in the negative pressure chamber 1001 to settle. In this embodiment, the structure and principle of the negative pressure assembly 10 are existing technologies and will not be described in detail here.

[0021] like Figure 1As shown, the left end of the auger rod 8 passes through the housing 1 and is fixedly connected to the output shaft of the drive mechanism 2 via the coupling 4, so that the drive mechanism 2 can be started and drive the auger rod 8 to rotate inside the housing 1. The auger rod 8 includes a first spiral blade segment 801, a second non-spiral blade segment 802 and a third spiral blade segment 803. Through the dual measures of the "second non-spiral blade segment 802" and the "pressure gate 5", the material in the conveying pipe is actively filled, which significantly improves the filling coefficient.

[0022] Specifically, the left end of the first spiral blade segment 801 protrudes from the housing 1 and is fixedly connected to the drive mechanism 2; the right end of the first spiral blade segment 801 is fixedly connected to the second bladeless segment 802, and the right end of the second bladeless segment 802 is fixedly connected to the third spiral blade segment 803, so that the first spiral blade segment 801 can transport and accumulate materials in the second bladeless segment 802, and the materials will form material accumulation, increasing the material filling coefficient of the feed inlet 7 to the second bladeless segment 802.

[0023] A pressure gate 5 is hinged to the end of the housing 1 away from the drive mechanism 2, and a protective component 3 is fitted on the outside of the pressure gate 5; when too much material accumulates, the material will squeeze the pressure gate 5 open so that the material can be discharged.

[0024] A buffer housing 9 is fixed at the top middle of the housing 1. The buffer housing 9 and the second bladeless segment 802 correspond to each other vertically. Material can accumulate in the area of ​​the buffer housing 9 and the second bladeless segment 802. When a large amount of material accumulates, the excess material can be conveyed to the pressure gate 5 by the third spiral segment 803.

[0025] The end of the housing 1 away from the drive mechanism 2 is provided with an inclined surface that slopes from the lower left to the right. The pressure gate 5 is installed on the inclined surface. When there is too much material, the pressure gate 5 can be opened to discharge the material, thereby increasing the material filling coefficient of the second bladeless segment 802 to the pressure gate 5.

[0026] like Figure 1 As shown, the protective component 3 is installed at the end of the housing 1 away from the drive mechanism 2. The bottom of the protective component 3 is provided with a discharge port 6. The pressure gate 5 and the discharge port 6 correspond to each other vertically so that the material can push open the pressure gate 5 and be discharged from the discharge port 6. In this embodiment, the top of the pressure gate 5 is hinged to the housing 1.

[0027] Specifically, the protective component 3 includes a protective cover 301 and an inspection valve 302; the protective cover 301 is installed at the end of the housing 1 away from the drive mechanism 2, and the pressure valve 5 is located inside the protective cover 301; the inspection valve 302 is installed on the right side of the protective cover 301.

[0028] Working principle: During use, the material is poured into the inlet of the negative pressure chamber 1001, and then the material forms a sediment in the negative pressure chamber 1001. The material in the negative pressure chamber 1001 can then be poured into the housing 1 through the inlet 7 and conveyed under the action of the auger rod 8. When the drive mechanism 2 is started, it can drive the auger rod 8 to rotate inside the housing 1, so that the first spiral blade segment 801 can convey and accumulate the material in the second bladeless segment 802. The material accumulates in the buffer housing 9 and the area of ​​the second bladeless segment 802, increasing the material filling coefficient from the inlet 7 to the second bladeless segment 802. When a large amount of material accumulates, the excess material can be conveyed to the pressure gate 5 through the third spiral blade segment 803. The pressure gate 5 and the outlet 6 correspond to each other so that the material can push open the pressure gate 5 and be discharged from the outlet 6.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An air-locked screw conveyor device, characterized in that It includes a screw conveyor assembly, a drive mechanism (2), a protective assembly (3), and a negative pressure assembly (10). The auger assembly includes a housing (1) extending in the left-right direction and an auger rod (8) extending in the left-right direction. The left end of the auger rod (8) passes through the housing (1) and is fixedly connected to the output shaft of the drive mechanism (2) via the coupling (4); The protective component (3) is installed at one end of the housing (1) away from the drive mechanism (2), and the bottom of the protective component (3) is provided with a discharge port (6). The housing (1) has a feed inlet (7) fixed at the top near the drive mechanism (2), and the discharge port of the negative pressure component (10) is connected to the feed inlet (7).

2. The closed-loop auger device according to claim 1, characterized in that, The auger rod (8) includes a first helical blade segment (801), a second bladeless segment (802), and a third helical blade segment (803). The left end of the first spiral blade segment (801) protrudes from the housing (1) and is fixedly connected to the drive mechanism (2); The right end of the first spiral blade segment (801) is fixedly connected to the second non-spiral blade segment (802), and the right end of the second non-spiral blade segment (802) is fixedly connected to the third spiral blade segment (803).

3. A wind-locked auger device according to claim 2, wherein, The housing (1) is hinged to a pressure door (5) at one end away from the drive mechanism (2), and the protective component (3) is fitted on the outside of the pressure door (5); The pressure gate (5) and the discharge port (6) correspond to each other vertically.

4. A wind-locked auger device according to claim 2, wherein, A buffer shell (9) is fixed at the top middle of the shell (1), and the buffer shell (9) corresponds to the second bladeless segment (802) above and below.

5. A wind-locked auger device according to claim 3, wherein, The protective component (3) includes a protective cover (301) and an inspection valve (302). The protective cover (301) is installed at one end of the housing (1) away from the drive mechanism (2), and the pressure gate (5) is located inside the protective cover (301); The inspection valve (302) is installed on the right side of the protective cover (301).

6. The closed-loop auger device according to claim 3, characterized in that, The housing (1) has a slope that tilts downward to the left at the end away from the drive mechanism (2), and the pressure gate (5) is installed on the slope.

7. A wind-locked auger device according to claim 1, wherein, The negative pressure assembly (10) includes a negative pressure chamber (1001) and a fan (1002). The negative pressure chamber (1001) is installed above the auger rod (8), and the fan (1002) is fixedly installed on the outer wall of the negative pressure chamber (1001).

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