Adjustable powder quantitative conveyor

Abstract

The utility model belongs to quantitative conveyor technical field, concretely relates to an adjustable powder quantitative conveyor, including spiral discharge mechanism, the rear end fixedly connected with quantitative valve in the upside of spiral discharge mechanism, the upside fixedly connected with spiral discharge mechanism at quantitative valve, spiral discharge mechanism includes inner tube, the upside of inner tube rear end is fixedly connected with quantitative valve, the rear end fixedly connected with transmission motor of inner tube, the output fixedly connected with spiral push material piece of transmission motor can rotate in the inside of inner tube, be provided with heating area on the inner tube, the area of heating area is adjustable, be provided with heating mechanism on the inner tube, is used for heating the heating area of inner tube, heating mechanism includes fixedly connected in the outside of inner tube's outer heat -proof cylinder, the inside installation of outer heat -proof cylinder has two movable heat -proof plate. The utility model can concentrate the heat energy of heating area and heat the powder conveyed in the inside of inner tube, reduce the heat energy of waste.

Description

Technical Field

[0001] This utility model belongs to the technical field of quantitative conveyors, specifically relating to an adjustable powder quantitative conveyor. Background Technology

[0002] In numerous industrial sectors such as chemical, food, pharmaceutical, and building materials, the quantitative conveying of powder materials is a crucial step in the production process. Its conveying accuracy and efficiency directly impact product quality stability and production continuity. Currently, most widely used powder quantitative conveying equipment in the industry is based on the screw conveying principle. It achieves directional material conveying through a screw pushing structure and is equipped with a quantitative valve to control the discharge rate, meeting the quantitative requirements under different operating conditions.

[0003] However, existing spiral powder metering conveyors still have significant technical shortcomings in practical applications, especially in scenarios where powders need to be heated (such as drying and conveying of easily hygroscopic powders, preheating and conveying before high-temperature processes, etc.).

[0004] Existing heating mechanisms are mostly fixed and encircling (such as heating wires or heating sleeves completely surrounding the inner cylinder), with the heating area covering the entire circumference or a fixed length of the inner cylinder. However, under the influence of gravity, the powder actually converges at the bottom inside the inner cylinder, often forming an empty area at the top. A large amount of heat energy from the fixed heating area is transferred to the empty area at the top of the inner cylinder, failing to effectively contact the powder, resulting in generally low heat utilization and significant energy waste. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable powder metering conveyor that can concentrate the heat energy of the heating zone to heat the powder conveyed inside the inner cylinder, thereby reducing wasted heat energy.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] An adjustable powder metering conveyor includes a screw discharge mechanism. A metering valve is fixedly connected to the rear end of the upper side of the screw discharge mechanism. A storage hopper is fixedly connected to the upper side of the metering valve. The screw discharge mechanism includes an inner cylinder. The upper side of the rear end of the inner cylinder is fixedly connected to the metering valve. A drive motor is fixedly connected to the rear end of the inner cylinder. A screw pusher blade that can rotate inside the inner cylinder is fixedly connected to the output end of the drive motor. A heating zone is provided on the inner cylinder. The area of ​​the heating zone is adjustable. A heating mechanism is provided on the inner cylinder for heating the heating zone of the inner cylinder.

[0008] Furthermore, the heating mechanism includes an outer heat insulation cylinder fixedly connected to the outside of the inner cylinder. Two movable heat insulation plates are installed inside the outer heat insulation cylinder. The two heat insulation plates divide the annular space between the inner cylinder and the outer heat insulation cylinder into an equipment cavity and a heating cavity. The heating cavity is located in the lower part of the equipment cavity. The side walls opposite to the inner cylinder and the heating cavity are the heating area. A heat source is provided inside the heating cavity.

[0009] Furthermore, the heat source is a heating rod that is fixedly connected inside the outer heat insulation cylinder.

[0010] Furthermore, multiple arc-shaped heat transfer plates are fixedly connected to the periphery of the inner cylinder.

[0011] Furthermore, a transmission bar is fixedly connected to both of the heat insulation plates, and a meshing groove is provided on the transmission bar. A self-locking servo motor is fixedly connected to the upper side of the outer heat insulation cylinder. A first bevel gear located inside the equipment cavity is fixedly connected to the output end of the self-locking servo motor. A second bevel gear is rotatably connected to the inner wall of the first bevel gear. The first bevel gear and the second bevel gear are meshed together. A meshing gear is fixedly connected to each of the two second bevel gears, and the two meshing gears are respectively meshed with the two meshing grooves.

[0012] Furthermore, two annular guide rings are fixedly connected between the inner cylinder and the outer insulation cylinder, and the insulation plate is slidably connected to the outside of the two annular guide rings.

[0013] Furthermore, the transmission bar is an annular ring, and the transmission bar and the heat insulation plate are opposite each other. The opposite heat insulation plate and the transmission bar are fixedly connected. The heat insulation plate has a slot, and the other transmission bar can move inside the slot.

[0014] Furthermore, an outer ring body located outside the slot is fixedly connected to the upper side of the heat insulation plate, and a sealing ring is fixedly connected inside the outer ring body;

[0015] The sealing ring has a hollow cavity inside, and an air pump is fixedly connected to the outer heat insulation cylinder. The air pump is connected to the hollow cavity of the sealing ring through a hose.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This utility model discloses an adjustable powder metering conveyor. When discharging powder in a metered manner, the area of ​​the heating zone can be dynamically adjusted according to the amount of powder discharged, so that the heating zone and the powder inside the inner cylinder are matched. This concentrates the heat energy of the heating zone to heat the powder inside the inner cylinder, reducing the heat energy transmitted to the upper empty area inside the inner cylinder that does not effectively contact the powder, thereby reducing wasted heat energy. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 3 This is a sectional front view of the present invention;

[0021] Figure 4 This is a utility model Figure 2 A magnified view of a section at point A in the middle;

[0022] Figure 5 This is a utility model Figure 2 A magnified view of a section at point B.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Storage hopper; 2. Metering valve; 3. Screw discharge mechanism; 4. Inner cylinder; 5. Screw pusher; 6. Drive motor; 7. Arc-shaped heat transfer plate; 8. Heat insulation plate; 9. Annular guide ring; 10. Heating rod; 11. Transmission bar; 12. Gear groove; 13. Self-locking servo motor; 14. Outer heat insulation cylinder; 15. First bevel gear; 16. Second bevel gear; 17. Gear; 18. Outer ring body; 19. Sealing ring; 20. Air pump. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figures 1-5 As shown, an adjustable powder metering conveyor includes a screw discharge mechanism 3. A metering valve 2 is fixedly connected to the rear end of the upper side of the screw discharge mechanism 3. A storage hopper 1 is fixedly connected to the upper side of the metering valve 2. The powder is stored inside the storage hopper 1. The powder is metered out through the metering valve 2 and then conveyed out through the screw discharge mechanism 3 to complete the metering of the powder.

[0027] The core of this technical solution lies in the improvement of the spiral discharge mechanism 3. The spiral discharge mechanism 3 includes an inner cylinder 4. The upper side of the rear end of the inner cylinder 4 is fixedly connected to the metering valve 2, so that the raw material discharged from the metering valve 2 can enter the inner cylinder 4. The rear end of the inner cylinder 4 is fixedly connected to a drive motor 6. The output end of the drive motor 6 is fixedly connected to a spiral pusher 5 that can rotate inside the inner cylinder 4. At this time, by starting the drive motor 6 to drive the spiral pusher 5 to rotate, the powder inside the inner cylinder 4 can be discharged through the rotating spiral pusher 5.

[0028] The core of this technical solution lies in the fact that a heating zone is provided on the inner cylinder 4, and a heating mechanism is provided on the inner cylinder 4 to heat the heating zone. The length direction of the heating zone is set along the axis of the inner cylinder 4, and the center line of the length direction of the heating zone is located at the lowest part of the outer side of the inner cylinder 4. The positions of the two side lines of the heating zone along the length direction are adjustable, thereby changing the area of ​​the heating zone. Since the powder inside the inner cylinder 4 will gather in the lower part of the inner side of the inner cylinder 4 under the action of gravity, the heating zone located in the lower part of the inner cylinder 4 can be adapted to the powder gathered in the lower part of the inner side of the inner cylinder 4, so that the heat energy of the heating zone can be directly transferred to the powder in contact with the inner cylinder 4. When the powder output changes, the area of ​​the heating zone can be changed by adjusting the positions of the two side lines of the heating zone, so that the heating zone and the powder inside the inner cylinder 4 are adapted to each other, thereby concentrating the heat energy of the heating zone to heat the powder inside the inner cylinder 4, reducing the heat energy transferred to the upper empty area inside the inner cylinder 4 that does not effectively contact the powder, thereby reducing the waste of heat energy.

[0029] In some embodiments, the heating mechanism includes multiple heating wires, and multiple heating zones are evenly arranged around the inner cylinder 4. The multiple heating wires are used to heat the multiple heating zones respectively. At this time, the heating wires corresponding to the heating zones are activated according to the powder gathered in the lower part of the inner side of the inner cylinder 4, and this part of the heating zone forms a heating zone.

[0030] In other embodiments, the heating mechanism includes an outer heat insulation cylinder 14 fixedly connected to the outside of the inner cylinder 4. Two movable heat insulation plates 8 are installed inside the outer heat insulation cylinder 14. The two heat insulation plates 8 divide the annular space between the inner cylinder 4 and the outer heat insulation cylinder 14 into an equipment cavity and a heating cavity. The heating cavity is located at the lower part of the equipment cavity. The size of the heating cavity can be changed by adjusting the position of the heat insulation plates 8. The side walls opposite to the inner cylinder 4 and the heating cavity are the heating areas. A heat source is provided inside the heating cavity. The heat source can be a heating rod 10 fixedly connected inside the outer heat insulation cylinder 14, or steam injected into the heating cavity through a pipe.

[0031] Meanwhile, multiple arc-shaped heat transfer plates 7 can be fixedly connected to the periphery of the inner cylinder 4. The material of the arc-shaped heat transfer plates 7 can be copper. At this time, the heat energy inside the heating cavity is collected on the arc-shaped heat transfer plates 7 opposite to the heating cavity, which can concentrate the heat energy in the heating area.

[0032] The heat insulation plate 8 can be moved by installing a self-moving device on it, which then moves the heat insulation plate 8. Alternatively, it can be moved in other ways. Figures 2-4As shown, transmission bars 11 are fixedly connected to both heat insulation plates 8. The transmission bars 11 have meshing grooves 12. A self-locking servo motor 13 is fixedly connected to the upper side of the outer heat insulation cylinder 14. The output end of the self-locking servo motor 13 is fixedly connected to a first bevel gear 15 located inside the equipment cavity. A second bevel gear 16 is rotatably connected to the inner wall of the first bevel gear 15. The first bevel gear 15 and the second bevel gear 16 are meshed together. Each of the two second bevel gears 16 is fixedly connected to a meshing gear 17. The two meshing gears 17 are meshed with the two meshing grooves 12 respectively. At this time, the kinetic energy can be output by starting the self-locking servo motor 13. Then, the kinetic energy is transmitted to the transmission bars 11 through the first bevel gear 15, the second bevel gear 16, the meshing gear 17 and the meshing grooves 12, which drives the two transmission bars 11 to rotate in opposite directions, thereby driving the two heat insulation plates 8 to move synchronously.

[0033] like Figures 2-3 As shown, two annular guide rings 9 are fixedly connected between the inner cylinder 4 and the outer heat insulation cylinder 14. The heat insulation plate 8 is slidably connected to the outside of the two annular guide rings 9, so that the heat insulation plate 8 can be guided by the annular guide rings 9, thereby improving the stability of the heat insulation plate 8.

[0034] In some embodiments, the transmission bar 11 is an arc-shaped bar, and both transmission bars 11 are located inside the equipment cavity.

[0035] In another embodiment, the transmission bar 11 is an annular ring, and the transmission bar 11 and the heat insulation plate 8 are opposite each other. The opposite heat insulation plate 8 and the transmission bar 11 are fixedly connected. The heat insulation plate 8 has a slot, and the other transmission bar 11 can move inside the slot. At this time, since the circumference of the transmission bar 11 is relatively long, it can drive the heat insulation plate 8 to move a large range.

[0036] Meanwhile, in order to ensure airtightness, an outer ring 18 located outside the groove is fixedly connected to the upper side of the heat insulation plate 8, and a sealing ring 19 is fixedly connected inside the outer ring 18.

[0037] Meanwhile, the sealing ring 19 can have a hollow cavity inside. An air pump 20 is fixedly connected to the outer heat insulation cylinder 14. The air pump 20 is connected to the hollow cavity of the sealing ring 19 through a hose. When the heat insulation plate 8 needs to be moved, the sealing ring 19 is deflated, causing the sealing ring 19 to shrink and create a gap between it and the transmission bar 11, which facilitates the relative displacement of the transmission bar 11 and the heat insulation plate 8. After the heat insulation plate 8 has been moved, the sealing ring 19 is inflated, causing the sealing ring 19 to expand and fit tightly against the transmission bar 11, thereby improving the sealing performance.

[0038] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An adjustable powder metering conveyor, comprising a screw discharge mechanism (3), wherein a metering valve (2) is fixedly connected to the upper rear end of the screw discharge mechanism (3), and a storage hopper (1) is fixedly connected to the upper side of the metering valve (2); the screw discharge mechanism (3) comprises an inner cylinder (4), wherein the upper side of the rear end of the inner cylinder (4) is fixedly connected to the metering valve (2); a drive motor (6) is fixedly connected to the rear end of the inner cylinder (4); and a screw pusher (5) that can rotate inside the inner cylinder (4) is fixedly connected to the output end of the drive motor (6), characterized in that: The inner cylinder (4) is provided with a heating zone, the area of ​​which is adjustable. The inner cylinder (4) is provided with a heating mechanism for heating the heating zone of the inner cylinder (4).

2. The adjustable powder metering conveyor according to claim 1, characterized in that: The heating mechanism includes an outer heat insulation cylinder (14) fixedly connected to the outside of the inner cylinder (4). Two movable heat insulation plates (8) are installed inside the outer heat insulation cylinder (14). The two heat insulation plates (8) divide the annular space between the inner cylinder (4) and the outer heat insulation cylinder (14) into an equipment cavity and a heating cavity. The heating cavity is located in the lower part of the equipment cavity. The side walls opposite to the inner cylinder (4) and the heating cavity are the heating area. A heat source is provided inside the heating cavity.

3. The adjustable powder metering conveyor according to claim 2, characterized in that: The heat source is a heating rod (10) fixedly connected inside the outer heat insulation cylinder (14).

4. An adjustable powder metering conveyor according to claim 2, characterized in that: Multiple arc-shaped heat transfer plates (7) are fixedly connected to the periphery of the inner cylinder (4).

5. An adjustable powder metering conveyor according to claim 2, characterized in that: A transmission bar (11) is fixedly connected to each of the two heat insulation plates (8). A toothed groove (12) is provided on the transmission bar (11). A self-locking servo motor (13) is fixedly connected to the upper side of the outer heat insulation cylinder (14). A first bevel gear (15) located inside the equipment cavity is fixedly connected to the output end of the self-locking servo motor (13). A second bevel gear (16) is rotatably connected to the inner wall of the first bevel gear (15). The first bevel gear (15) and the second bevel gear (16) are meshed together. A toothed gear (17) is fixedly connected to each of the two second bevel gears (16). The two toothed gears (17) are meshed together with the two toothed grooves (12) respectively.

6. An adjustable powder metering conveyor according to claim 5, characterized in that: Two annular guide rings (9) are fixedly connected between the inner cylinder (4) and the outer heat insulation cylinder (14), and the heat insulation plate (8) is slidably connected to the outside of the two annular guide rings (9).

7. An adjustable powder metering conveyor according to claim 5, characterized in that: The transmission bar (11) is an annular ring. The transmission bar (11) and the heat insulation plate (8) are opposite each other. The opposite heat insulation plate (8) and the transmission bar (11) are fixedly connected. The heat insulation plate (8) has a slot, and the other transmission bar (11) can move inside the slot.

8. An adjustable powder metering conveyor according to claim 7, characterized in that: The heat insulation plate (8) is fixedly connected to an outer ring body (18) located outside the groove, and a sealing ring (19) is fixedly connected inside the outer ring body (18); The sealing ring (19) has a hollow cavity inside, and an air pump (20) is fixedly connected to the outer heat insulation cylinder (14). The air pump (20) is connected to the hollow cavity of the sealing ring (19) through a hose.

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