Double-screw high-precision feeder

Abstract

The utility model discloses a double helix high accuracy feeder, it includes: conveying bin, the bottom right side of conveying bin is equipped with the discharge gate, the bottom intercommunication of discharge gate is fixed with the discharge bin, the top fixed connection of conveying bin has the flat pressure cover, the top left side of flat pressure cover is equipped with the feeding port, the right side of flat pressure cover is embedded with a plurality of filter core equidistantly, the right end outside of filter core all is clamped and fixed with the exhaust fan, the exhaust fan all is to left flat pressure cover clamping and fixed, the right side exhaust end of exhaust fan all intercommunication fixed with the air duct, the right end intercommunication fixed with water filter box of air duct, form the airflow that continues to go in at the place of feeding and discharging, then the dust produced in the conveying channel is continuously drained to the filter core and carries out the filtration of preliminary solid particles, and then carries out secondary water -soluble filtration through the air duct cooperation water filter box again and finally purifies and discharges upwards, avoids the dust to escape to the outside and causes the pollution problem of surrounding environment.

Description

Technical Field

[0001] This utility model relates to the field of twin-helix feeder technology, and in particular to a twin-helix high-precision feeder. Background Technology

[0002] A twin-screw feeder consists of two seamless steel pipes, each containing a solid screw, one left-handed and the other right-handed. This design prevents material jamming. While conveying materials, the twin-screw feeder also performs mixing, stirring, and crushing functions. Its conveying capacity is 1.5-2 times that of a single-shaft feeder. Twin-screw feeders can be divided into shafted and shaftless types, each suitable for different material types. Shafted twin-screw feeders are suitable for conveying powdery and granular materials such as flour, soybeans, and coal powder.

[0003] When mixing and conveying powder, it is easy to generate significant dust pollution. Conventional enclosure measures can only close the conveying section, while the loading and unloading section requires continuous loading and unloading operations and cannot be completely closed. As a result, the dust generated during mixing and conveying can easily escape from both places to the outside, causing pollution problems to the surrounding environment. It can also block the loading and unloading ports and obstruct the view of the operators, affecting their accurate control of loading and unloading. Utility Model Content

[0004] The purpose of this invention is to provide a double-helix high-precision feeder that can prevent dust from escaping from the inlet and outlet and causing pollution to the surrounding environment, while keeping the material inlet and outlet clear and facilitating accurate control of the feeding amount by the operators.

[0005] To achieve the above objectives, a high-precision twin-screw feeder is provided, comprising: a conveying bin; a shafted twin-screw is rotatably mounted inside the conveying bin; the left end of the shafted twin-screw extends outside the conveying bin and is correspondingly mounted with a synchronous gearbox; a drive motor is mounted on the rear left side of the synchronous gearbox; the right end of the shafted twin-screw extends outside the conveying bin and is rotatably fitted with a bushing; the bushing is fixed to the conveying bin; a material attaching seat is fixedly connected to the bottom inner side of the conveying bin; the upper arc surface of the material attaching seat slides in cooperation with the outer edge of the screw; a base frame is symmetrically fixed to the bottom of the conveying bin; pads are symmetrically fixed to the bottom left and right of the base frame; a discharge port is opened on the right side of the bottom of the conveying bin; a discharge bin is fixedly connected to the bottom of the discharge port; a flat pressure cover is fixedly connected to the top of the conveying bin; a feed inlet is opened on the left side of the top of the flat pressure cover; and several filter elements are equidistantly fitted on the right side of the flat pressure cover. Each filter element has an exhaust fan fixedly fastened to its right outer side. Each exhaust fan is fixedly fastened to its left by a flat-pressing cover. Each exhaust fan has a duct connected to its right exhaust end. The right end of the duct is connected to a water filter box. First, the flat-pressing cover and the discharge hopper are set to restrict the inlet and outlet to one-way flow, so that dust generated during the conveying process can only escape and flow in both directions along a single path. Then, several filter elements and exhaust fans are equidistantly embedded on the right side of the flat-pressing cover to uniformly extract the gas in the channel, thereby forming a continuous inward airflow at the loading and unloading points. This continuously guides the dust generated in the conveying channel into the filter element for initial solid particle filtration. Then, the dust is further filtered by the duct and the water filter box for secondary water-soluble filtration and finally discharged upwards for purification. This prevents dust from escaping from the loading and unloading points and causing pollution to the surrounding environment. At the same time, it keeps the material in and out of the loading and unloading points clear, making it easy for operators to accurately control the feeding amount.

[0006] According to the aforementioned double-helix high-precision feeder, a discharge chute is provided on the lower right side of the discharge hopper. A feeding plate is inclinedly mounted at the bottom of the discharge chute. The upper left end of the feeding plate extends into the discharge hopper and is fixed to its left side wall. A receiving bag is correspondingly provided on the lower right end of the feeding plate and is connected to its opening. This facilitates convenient collection of the mixed powder.

[0007] According to the aforementioned double-helix high-precision feeder, an inclined cover plate is fixedly connected to the upper side of the feeding plate, and the left side of the inclined cover plate is fixed to the feed hopper. A feeding trough is reserved between the inclined cover plate and the feeding plate and is correspondingly connected to the discharge trough. Extending the closed feeding passage of the discharge trough prevents the falling mixed powder from generating large amounts of dust that cannot be completely diverted in time, thus preventing some dust from escaping.

[0008] According to the aforementioned double-helix high-precision feeder, a retaining bracket is fixedly connected to the bottom of the water filter box, and the bottom of the retaining bracket is fixedly connected to the bushing. This ensures the stable mounting of the water filter box.

[0009] According to the aforementioned double-helix high-precision feeder, several limiting rods are fixedly arranged around the base frame to enhance its support strength.

[0010] According to the aforementioned double-helix high-precision feeder, the right end of the air guide pipe is positioned downwards on the lower layer of the water filter box, and the water level in the water filter box is lower than the lower left end of the air guide pipe. This increases the water dissolving time and prevents water from flowing back into the conveying chamber.

[0011] The above-mentioned solution has the following beneficial effects:

[0012] In this invention, a flat pressure cap and a discharge hopper are first installed to restrict the inlet and outlet to one-way flow, so that dust generated during the conveying process can only escape and flow in both directions along a single path. Then, several filter elements and an exhaust fan are equidistantly embedded on the right side of the flat pressure cap to uniformly extract the gas in the channel, thereby forming a continuous inward airflow at the loading and unloading points. This continuously guides the dust generated in the conveying channel into the filter elements for initial solid particle filtration. Then, a secondary water-soluble filtration is performed through the air guide pipe in conjunction with a water filter box, and finally, the dust is purified and discharged upwards. This prevents dust from escaping from the loading and unloading points and causing pollution to the surrounding environment, while keeping the material in and out of the loading and unloading points clear, making it easy for operators to accurately control the feeding amount.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a schematic diagram of the overall design of the double-helix high-precision feeder of this utility model;

[0016] Figure 2 This is a schematic diagram showing the distribution of the twin screws with shafts in the double-helix high-precision feeder of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure of the conveying bin in the double-helix high-precision feeder of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the exhaust fan and the water filter box in the double-helix high-precision feeder of this utility model.

[0019] Legend:

[0020] 1. Conveying bin; 2. Twin-screw extruder with shaft; 3. Synchronous gearbox; 4. Drive motor; 5. Bushing; 6. Material attaching seat; 7. Base frame; 8. Pad; 9. Discharge bin; 10. Feeding plate; 11. Flat pressure cover; 12. Inlet; 13. Filter element; 14. Exhaust fan; 15. Air guide pipe; 16. Water filter box; 17. Card holder; 18. Slanted cover plate; 19. Limiting rod. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model embodiment provides a double-screw high-precision feeder, including: a conveying bin 1, a shafted double screw 2 rotatably mounted on the inner side of the conveying bin 1, the left end of the shafted double screw 2 extending out of the conveying bin 1 and correspondingly mounted with a synchronous gearbox 3, a drive motor 4 mounted on the left rear part of the synchronous gearbox 3, the right end of the shafted double screw 2 extending out of the conveying bin 1 and rotatably fitted with a bushing 5, the bushing 5 being fixed to the conveying bin 1, a material attaching seat 6 fixedly connected to the inner bottom of the conveying bin 1, the upper arc surface of the material attaching seat 6 correspondingly slidingly fitted with the outer edge of the screw, a base frame 7 symmetrically fixed at the bottom of the conveying bin 1, several limiting rods 19 fixedly around the base frame 7, and pads 8 symmetrically fixed at the bottom of the base frame 7, and a discharge port opened on the right side of the bottom of the conveying bin 1, providing a foundation for mixing and conveying powder and maintaining its stability during operation.

[0023] The bottom of the discharge port is connected to and fixed with a discharge hopper 9. The top of the conveying hopper 1 is fixedly connected with a flat pressure cover 11. The top left side of the flat pressure cover 11 has a feed inlet 12. Several filter elements 13 are equidistantly fitted on the right side of the flat pressure cover 11. Exhaust fans 14 are snapped and fixed to the outer right side of each filter element 13. The exhaust fans 14 are all snapped and fixed to the flat pressure cover 11 to the left. The exhaust end of each exhaust fan 14 is connected and fixedly connected to an air guide pipe 15. The right end of the air guide pipe 15 is connected and fixedly connected to a water filter box 16. The right end of the air guide pipe 15 is set downwards. The water level in the lower layer of the water filter box 16 is lower than the lower left side of the air guide pipe 15. The bottom of the water filter box 16 is fixedly connected to the bracket 17, and the bottom of the bracket 17 is fixedly connected to the bushing 5. The gas in the channel is uniformly extracted from the middle and rear section, and then a continuous inward airflow is formed at the loading and unloading point. The dust generated in the conveying channel is continuously guided into the filter element 13 for preliminary solid particle filtration. Then, the air guide pipe 15 is used in conjunction with the water filter box 16 for secondary water-soluble filtration and finally purified and discharged upward.

[0024] A discharge chute is provided on the lower right side of the discharge hopper 9. A feeding plate 10 is inclinedly mounted at the bottom of the discharge chute. The upper left end of the feeding plate 10 extends into the discharge hopper 9 and is fixed to its left side wall. A receiving bag is provided on the lower right end of the feeding plate 10 and is connected to its opening. An inclined cover plate 18 is fixedly connected to the upper side of the feeding plate 10. The left side of the inclined cover plate 18 is fixed to the feed hopper. A feeding chute is reserved between the inclined cover plate 18 and the feeding plate 10 and is connected to the discharge chute, extending the one-way passage of the feeding and thus buffering the dust generated by the falling material at a certain distance, so that it can be completely drained and filtered out by the exhaust fan 14.

[0025] Working principle: In this utility model, a flat pressure cover 11 and a discharge hopper 9 are first set to restrict the feed inlet 12 and the discharge outlet to one-way flow, so that the dust generated by the powder during the conveying process can only be dispersed and flowed in both directions along a single passage. Then, several filter elements 13 and an exhaust fan 14 are equidistantly embedded on the right side of the flat pressure cover 11 to draw the gas in the channel out at a uniform speed, thereby forming a continuous inward airflow at the loading and unloading points. The dust generated in the conveying channel is then continuously guided into the filter element 13 for preliminary solid particle filtration. Then, the air guide pipe 15 is used in conjunction with the water filter box 16 for secondary water-soluble filtration and finally purified upward discharge, avoiding dust from escaping from the loading and unloading points to the outside and causing pollution to the surrounding environment. At the same time, the material in and out of the loading and unloading points are clearly visible, making it easy for operators to accurately control the feeding amount.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A twin-helix high-precision feeder, including: A conveying bin (1) is provided with a rotatable double screw (2) on its inner side. The left end of the rotatable double screw (2) extends out of the conveying bin (1) and is correspondingly equipped with a synchronous gearbox (3). A drive motor (4) is installed on the left rear side of the synchronous gearbox (3). The right end of the rotatable double screw (2) extends out of the conveying bin (1) and is rotatably fitted with a bushing (5). The bushing (5) is fixed to the conveying bin (1). The conveying bin (1) is characterized in that a material attaching seat (6) is fixedly connected to the bottom inner side of the conveying bin (1). The upper arc surface of the material attaching seat (6) is correspondingly slidably fitted with the outer edge of the screw. A base frame (7) is symmetrically fixed at the bottom front and back of the conveying bin (1). A pad (8) is symmetrically fixed at the bottom left and right of the base frame (7). The bottom right side of the conveying chamber (1) is provided with a discharge port, and the bottom of the discharge port is connected to and fixed with a discharge chamber (9). The top of the conveying chamber (1) is fixedly connected with a flat pressure cover (11). The top left side of the flat pressure cover (11) is provided with a feed port (12). Several filter elements (13) are equidistantly fitted on the right side of the flat pressure cover (11). The outer side of the right end of each filter element (13) is fitted with an exhaust fan (14). The exhaust fan (14) is fitted with the flat pressure cover (11) to the left. The right exhaust end of each exhaust fan (14) is connected to and fixed with an air guide pipe (15). The right end of the air guide pipe (15) is connected to and fixed with a water filter box (16).

2. The double-helix high-precision feeder according to claim 1, characterized in that, The lower right side of the discharge hopper (9) is provided with a discharge trough. The bottom of the discharge trough is inclined and a feeding plate (10) is mounted on it. The upper left end of the feeding plate (10) extends into the discharge hopper (9) and is fixed to its left side wall. The lower right end of the feeding plate (10) is provided with a receiving bag and is connected to its bag opening.

3. The double-helix high-precision feeder according to claim 2, characterized in that, An inclined cover plate (18) is fixedly connected to the upper side of the feeding plate (10). The left side of the inclined cover plate (18) is fixed to the feeding hopper. A feeding groove is reserved between the inclined cover plate (18) and the feeding plate (10) and is connected to the discharge groove.

4. The double-helix high-precision feeder according to claim 1, characterized in that, The bottom of the water filter box (16) is fixedly connected to a bracket (17), and the bottom of the bracket (17) is fixedly connected to the bushing (5).

5. The double-helix high-precision feeder according to claim 1, characterized in that, The base frame (7) is fixed with several limiting rods (19) around each other.

6. The double-helix high-precision feeder according to claim 1, characterized in that, The right end of the air guide pipe (15) is mounted downwards on the lower layer of the water filter box (16), and the water level of the water filter box (16) is lower than the lower left end of the air guide pipe (15).

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