Double-belt type constant feeder

Abstract

The utility model relates to the technical field of material conveying, in particular to a double-belt type constant feeder, which not only can scrape materials with higher humidity, purge dust remaining on conveyor belts and improve weighing precision, but also can adjust the tension degree of the conveyor belts to conveniently adapt to conveying of different types of materials. Comprising a conveying mechanism; the feeding mechanism is installed on the conveying mechanism and drives materials to be fed, the metering mechanism is installed on the conveying mechanism and weighs the materials, and the tensioning mechanism is installed on the conveying mechanism and adjusts the tensioning degree of the conveying belt. The blowing mechanism is installed on the conveying mechanism and blows dust on the conveying belt.

Description

Technical Field

[0001] The utility model relates to the technical field of material transportation, in particular to a double-belt quantitative feeder. Background Art

[0002] The quantitative feeder is a special equipment for continuously conveying and measuring various solid materials and quantitatively controlling the material flow. Its working principle is that when the equipment is running, the weighing sensor transmits the ring belt load signal and the speed sensor transmits the ring belt speed signal to the weighing control unit. The weighing control unit continuously compares the actual feeding amount with the set feeding amount, and adjusts the motor speed through the frequency converter, thereby controlling the ring belt speed in real time to achieve quantitative feeding.

[0003] Existing quantitative feeders, such as the double-layer conveying quantitative feeder disclosed in the utility model patent application number 201922019371.5, have a main structure including an upper feeding mechanism, a lower feeding mechanism and a drag hopper with a discharge port located above the starting end of the upper feeding mechanism. The lower feeding mechanism is provided with a sensor, and the upper feeding mechanism includes a flat belt. An inclined blanking and sliding plate is provided between the intersecting parts of the upper feeding mechanism and the lower feeding mechanism. The width of the blanking and sliding plate is not less than the width of the feeding belt, and the blanking and sliding plate transports materials. One side is stepped, and an adjusting screw is provided on the blanking and chute plate. When in use, the transported material is fed from the drag hopper, and then falls onto the flat belt of the upper conveying mechanism through the discharge port of the drag hopper. Under the action of the reducer motor, the active roller rotates to drive the driven roller to rotate, and then drives the flat belt to move together. The material on the flat belt slides through the blanking and chute plate to the lower conveying mechanism. The lower conveying mechanism is equipped with a sensor. After weighing the material of the lower conveying mechanism, the pulley of the lower conveying mechanism drives the skirt belt to move for unloading.

[0004] However, some materials may have high humidity and easily stick to the belt, causing poor discharge and affecting the metering accuracy.

[0005] The tension of existing belts is mostly difficult to adjust, making it impossible to adapt to different material properties. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a double-belt quantitative feeder which can not only scrape off materials with high humidity and blow away the dust remaining on the conveyor belt to improve the weighing accuracy, but also adjust the tension of the conveyor belt to facilitate the transportation of different types of materials.

[0007] The utility model discloses a double-belt quantitative feeder, comprising a conveying mechanism; a feeding mechanism, a metering mechanism, a tensioning mechanism and a purging mechanism, wherein the feeding mechanism is installed on the conveying mechanism and drives the material to be fed, the metering mechanism is installed on the conveying mechanism and weighs the material, the tensioning mechanism is installed on the conveying mechanism and adjusts the tension of the conveyor belt, and the purging mechanism is installed on the conveying mechanism and purges the dust on the conveyor belt; the material is fed into the feeding mechanism, the feeding mechanism conveys the material into the conveying mechanism, the conveying mechanism drives the material to be conveyed forward, the metering mechanism weighs and measures the material conveyed by the conveying mechanism, the staff adjusts the tensioning mechanism according to different types of materials, so that the conveyor belt is at different tensions, thereby ensuring the feeding efficiency and the service life of the conveyor belt, and at the same time, by arranging the purging mechanism, the material is prevented from sticking to the conveyor belt and the conveyor belt is purged, thereby improving the weighing accuracy.

[0008] Preferably, the conveying mechanism includes a support frame, a first motor, a first reducer, two groups of first conveying rollers, a speed sensor, four groups of first baffles and a first conveyor belt. The bottom end of the support frame is connected to the ground, the first motor is installed on the support frame, the first reducer is installed on the support frame, the two groups of first conveying rollers are rotatably installed on the support frame, the speed sensor is installed on the support frame and is transmission-connected to the first conveyor roller, two groups of first baffles are installed on each group of first conveying rollers, and the first conveyor belt is tensioned and installed between the two groups of first conveying rollers and located between the four groups of first baffles; the feeding mechanism conveys the material to the first conveyor belt, starts the first motor, and the first motor drives the first conveyor roller connected to it to rotate through the first reducer. The first conveyor roller drives the first conveyor belt and the material forward, and the rotation speed of the first conveyor roller is detected by setting a speed sensor, and the first conveyor belt is prevented from deviating during movement by setting four groups of first baffles.

[0009] Preferably, the feeding mechanism includes a connecting frame, a second motor, a second reducer, two groups of second conveyor rollers, four groups of second baffles, a second conveyor belt and a loading hopper. The bottom end of the connecting frame is connected to the top end of the supporting frame, the second motor is installed on the connecting frame, the second reducer is installed on the connecting frame, the two groups of second conveyor rollers are rotatably installed on the connecting frame, each group of second conveyor rollers is installed with two groups of second baffles, the second conveyor belt is tensioned and installed between the two groups of second conveyor rollers and located between the four groups of second baffles, and the loading hopper is installed on the connecting frame; the material is delivered into the loading hopper, the material falls onto the second conveyor belt through the loading hopper, the second motor is started, the second motor drives the second conveyor roller connected to it to rotate through the second reducer, the second conveyor roller drives the second conveyor belt and the material to be transported forward, and the material falls onto the first conveyor belt. By setting four groups of second baffles, the second conveyor belt can be prevented from running off during movement.

[0010] Preferably, the metering mechanism includes a gravity sensor, two sets of support rollers and a weight rack. The gravity sensor is installed on the support frame. The two sets of support rollers are rotatably installed on the gravity sensor. The bottom end of the weight rack is connected to the top end of the gravity sensor. During the movement of the first conveyor belt and the material, pressure is generated on the two sets of support rollers. The two sets of support rollers transfer the pressure to the gravity sensor. The gravity sensor dynamically measures and weighs the passing material, and the weight rack is set to facilitate the placement of weights.

[0011] Preferably, the tensioning mechanism includes a rotating shaft, a damper, a handwheel, two sets of connecting rods and a tensioning roller. The rotating shaft is rotatably installed on the support frame, the damper is installed on the rotating shaft, the handwheel is installed on the rotating shaft, the two sets of connecting rods are installed on the rotating shaft, and the tensioning roller is rotatably installed between the two sets of connecting rods; the staff rotates the handwheel according to the type of material, the handwheel drives the rotating shaft to rotate, the rotating shaft drives the two sets of connecting rods and the tensioning roller to rotate, the tensioning roller supports the first conveyor belt, adjusts the tension of the first conveyor belt, and ensures the feeding efficiency and the service life of the conveyor belt.

[0012] Preferably, the purge mechanism includes a lower slide, two sets of side baffles, a rubber baffle, a dust hopper, an air pump, an air pipe and multiple sets of high-pressure nozzles. The lower slide is mounted on the connecting frame, the two sets of side baffles are mounted on the lower slide, the bottom end of the rubber baffle is connected to the top end of the lower slide, the dust hopper is mounted on the lower slide, the air pump is mounted on the supporting frame, the air pipe is mounted on the air pump, and the multiple sets of high-pressure nozzles are mounted on the air pipe and connected to the inside of the air pipe; the material is transported to the lower slide through the second conveyor belt, and the material slides down the inclined surface of the lower slide to the first conveyor belt On the upper side, the impact force of the material sliding down is slowed down to prevent the falling material from impacting the surface of the first conveyor belt and affecting the weighing accuracy. Two sets of side baffles are set to prevent the material from falling from the side. The rubber baffle is in contact with the lower surface of the second conveyor belt to scrape off the material stuck on the second conveyor belt. The air pump is started, and the air is compressed and transported to multiple sets of high-pressure nozzles through the air pipe. The multiple sets of high-pressure nozzles are used to sweep the lower surfaces of the second conveyor belt and the first conveyor belt to blow off the remaining dust. A dust hopper is set to prevent dust from falling onto the first conveyor belt.

[0013] Compared with the existing technology, the beneficial effects of the present invention are: the material is fed into the feeding mechanism, the feeding mechanism transports the material into the conveying mechanism, the conveying mechanism drives the material to be transported forward, the metering mechanism weighs and measures the material conveyed by the conveying mechanism, and the staff adjusts the tensioning mechanism according to different types of materials to make the conveyor belt at different tensions, ensuring the feeding efficiency and the service life of the conveyor belt. At the same time, by setting a purge mechanism, the material is prevented from sticking to the conveyor belt and the conveyor belt is purged, thereby improving the weighing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an axonometric structural diagram of the present utility model;

[0015] Figure 2 It is a partially enlarged isometric structural diagram of the conveying mechanism and metering mechanism of the utility model;

[0016] Figure 3 This is a partially enlarged axonometric structural diagram of the feeding mechanism of the utility model;

[0017] Figure 4 It is a partially enlarged cross-sectional isometric structural diagram of the tensioning mechanism and the purge mechanism of the utility model;

[0018] Figure 5 It is a partially enlarged sectional axonometric structural diagram of the purge mechanism of the utility model.

[0019] Markings in the accompanying drawings: 01, conveying mechanism; 11, supporting frame; 12, first motor; 13, first reducer; 14, first conveyor roller; 15, speed sensor; 16, first baffle; 17, first conveyor belt; 02, feeding mechanism; 21, connecting frame; 22, second motor; 23, second reducer; 24, second conveyor roller; 25, second baffle; 26, second conveyor belt; 27, feeding hopper; 03, metering mechanism; 31, gravity sensor; 32, support roller; 33, weight rack; 04, tensioning mechanism; 41, rotating shaft; 42, damper; 43, hand wheel; 44, connecting rod; 45, tensioning roller; 05, purge mechanism; 51, lower slide; 52, side baffle; 53, rubber baffle; 54, dust hopper; 55, air pump; 56, air pipe; 57, high-pressure nozzle. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example 1

[0021] The utility model is a double-belt quantitative feeder, comprising a conveying mechanism 01; a feeding mechanism 02, a metering mechanism 03, a tensioning mechanism 04 and a purge mechanism 05, wherein the feeding mechanism 02 is mounted on the conveying mechanism 01 and drives the material to be fed, the metering mechanism 03 is mounted on the conveying mechanism 01 and weighs the material, the tensioning mechanism 04 is mounted on the conveying mechanism 01 and adjusts the tension of the conveyor belt, and the purge mechanism 05 is mounted on the conveying mechanism 01 and purges the dust on the conveyor belt; the conveying mechanism 01 comprises a support frame 11, a first motor 12, a first reducer 13, two sets of first conveying rollers 14, and a first transmission roller 15. , speed sensor 15, four groups of first baffles 16 and first conveyor belt 17, the bottom end of the support frame 11 is connected to the ground, the first motor 12 is installed on the support frame 11, the first reducer 13 is installed on the support frame 11, the two groups of first conveyor rollers 14 are rotatably installed on the support frame 11, the speed sensor 15 is installed on the support frame 11 and is transmission-connected to the first conveyor roller 14, each group of first conveyor rollers 14 is installed with two groups of first baffles 16, the first conveyor belt 17 is tensioned and installed between the two groups of first conveyor rollers 14 and located between the four groups of first baffles 16; the feeding mechanism 02 includes a connecting frame 21, a second motor 12, a first reducer 13, and a first conveyor roller 14. The motor 22, the second reducer 23, two sets of second conveyor rollers 24, four sets of second baffles 25, the second conveyor belt 26 and the upper hopper 27, the bottom end of the connecting frame 21 is connected to the top end of the support frame 11, the second motor 22 is installed on the connecting frame 21, the second reducer 23 is installed on the connecting frame 21, the two sets of second conveyor rollers 24 are rotatably installed on the connecting frame 21, each set of second conveyor rollers 24 is installed with two sets of second baffles 25, the second conveyor belt 26 is tensioned and installed between the two sets of second conveyor rollers 24 and between the four sets of second baffles 25, and the upper hopper 27 is installed on the connecting frame 21; the metering mechanism 03 It includes a gravity sensor 31, two sets of supporting rollers 32 and a weight rack 33. The gravity sensor 31 is mounted on the support frame 11. The two sets of supporting rollers 32 are rotatably mounted on the gravity sensor 31. The bottom end of the weight rack 33 is connected to the top end of the gravity sensor 31. The tensioning mechanism 04 includes a rotating shaft 41, a damper 42, a handwheel 43, two sets of connecting rods 44 and a tensioning roller 45. The rotating shaft 41 is rotatably mounted on the support frame 11, the damper 42 is mounted on the rotating shaft 41, the handwheel 43 is mounted on the rotating shaft 41, the two sets of connecting rods 44 are mounted on the rotating shaft 41, and the tensioning roller 45 is rotatably mounted between the two sets of connecting rods 44.When it is working, first, the material is thrown into the upper hopper 27, and the material falls onto the second conveyor belt 26 through the upper hopper 27. The second motor 22 is started, and the second motor 22 drives the second conveyor roller 24 connected thereto to rotate through the second reducer 23. The second conveyor roller 24 drives the second conveyor belt 26 and the material to be transported forward, and the material falls onto the first conveyor belt 17. By setting four groups of second baffles 25, the second conveyor belt 26 is prevented from deviating during movement. The first motor 12 is started, and the first motor 12 drives the first conveyor roller 14 connected thereto to rotate through the first reducer 13. The first conveyor roller 14 drives the first conveyor belt 17 and the material to be transported forward. The speed sensor 15 is set to The rotation speed of the first conveyor roller 14 is monitored. Four sets of first baffles 16 are provided to prevent the first conveyor belt 17 from deviating during movement. During the movement of the first conveyor belt 17 and the material, pressure is applied to the two sets of support rollers 32. These two sets of support rollers 32 transmit the pressure to the gravity sensor 31, which dynamically weighs the passing material. A weight rack 33 is provided to facilitate the placement of weights. Workers rotate the handwheel 43 according to the type of material. This handwheel 43 rotates the rotating shaft 41, which in turn rotates the two sets of connecting rods 44 and the tensioning roller 45. The tensioning roller 45 supports the first conveyor belt 17 and adjusts the tension of the first conveyor belt 17 to ensure feeding efficiency and the life of the conveyor belt. Example 2

[0022] like Figures 1 to 5As shown, a double-belt quantitative feeder of the present invention is based on Example 1; the purge mechanism 05 includes a lower slide 51, two sets of side baffles 52, rubber baffles 53, a dust hopper 54, an air pump 55, an air pipe 56 and multiple sets of high-pressure nozzles 57. The lower slide 51 is installed on the connecting frame 21, and the two sets of side baffles 52 are installed on the lower slide 51. The bottom end of the rubber baffle 53 is connected to the top of the lower slide 51, the dust hopper 54 is installed on the lower slide 51, the air pump 55 is installed on the support frame 11, and the air pipe 56 is installed on the air pump 55. Multiple sets of high-pressure nozzles 57 are installed on the air pipe 56 and are connected to the inside of the air pipe 56; when it is working, first, the material is delivered The material enters the upper hopper 27, falls onto the second conveyor belt 26 through the upper hopper 27, and the second motor 22 is started. The second motor 22 drives the second conveyor roller 24 connected thereto to rotate through the second reducer 23, and the second conveyor roller 24 drives the second conveyor belt 26 and the material to be transported forward. By setting four sets of second baffles 25, the second conveyor belt 26 is prevented from running off during movement. The material is transported to the lower slide 51 through the second conveyor belt 26, and the material slides down along the inclined surface of the lower slide 51 to the first conveyor belt 17, slowing down the impact force of the material sliding down, and preventing the material from falling and causing impact on the surface of the first conveyor belt 17 and affecting the weighing accuracy. By setting two sets of side baffles 52, the material is prevented from falling from the side. The rubber baffle 53 fits with the lower surface of the second conveyor belt 26 to scrape off the material stuck on the second conveyor belt 26, and the first motor 12 is started. The first motor 12 drives the first conveyor roller 14 connected thereto to rotate through the first reducer 13. The first conveyor roller 14 drives the first conveyor belt 17 and the material to be transported forward. The speed sensor 15 is provided to detect the rotation speed of the first conveyor roller 14. Four sets of first baffles 16 are provided to prevent the first conveyor belt 17 from deviating during movement. During the movement of the first conveyor belt 17 and the material, pressure is generated on the two sets of supporting rollers 32. The two sets of supporting rollers 32 transmit the pressure to the gravity sensor 31, and the gravity sensor 31 senses the passing material. Dynamic metering and weighing are carried out, and weights are conveniently placed by setting up a weight rack 33. The staff rotates the handwheel 43 according to the type of material. The handwheel 43 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the two sets of connecting rods 44 and the tensioning roller 45 to rotate. The tensioning roller 45 supports the first conveyor belt 17 and adjusts the tension of the first conveyor belt 17 to ensure the feeding efficiency and the service life of the conveyor belt. The air pump 55 is started, and the air pump 55 compresses the air and transmits it to multiple sets of high-pressure nozzles 57 through the air pipe 56. The multiple sets of high-pressure nozzles 57 blow the lower surfaces of the second conveyor belt 26 and the first conveyor belt 17 to blow off the remaining dust. The dust collecting hopper 54 is provided to prevent dust from falling onto the first conveyor belt 17.

[0023] The first motor 12, the first reducer 13, the second motor 22, the second reducer 23 and the air pump 55 of the utility model are purchased on the market. Technicians in this industry only need to install and operate them according to the accompanying instruction manuals without the need for creative work by technicians in this field.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A double-belt quantitative feeder, comprising a conveying mechanism (01); characterized in that: The utility model also includes a feeding mechanism (02), a metering mechanism (03), a tensioning mechanism (04) and a purging mechanism (05). The feeding mechanism (02) is installed on the conveying mechanism (01) and drives the material to be fed. The metering mechanism (03) is installed on the conveying mechanism (01) and weighs the material. The tensioning mechanism (04) is installed on the conveying mechanism (01) and adjusts the tension of the conveyor belt. The purging mechanism (05) is installed on the conveying mechanism (01) and purges the dust on the conveyor belt.

2. A double-belt quantitative feeder according to claim 1, characterized in that: The conveying mechanism (01) includes a support frame (11), a first motor (12), a first reducer (13), two groups of first conveying rollers (14), a speed sensor (15), four groups of first baffles (16) and a first conveyor belt (17). The bottom end of the support frame (11) is connected to the ground. The first motor (12) is installed on the support frame (11). The first reducer (13) is installed on the support frame (11). The two groups of first conveying rollers (14) are both rotatably installed on the support frame (11). The speed sensor (15) is installed on the support frame (11) and is transmission-connected to the first conveying rollers (14). Two groups of first baffles (16) are installed on each group of first conveying rollers (14). The first conveyor belt (17) is tensioned and installed between the two groups of first conveying rollers (14) and is located between the four groups of first baffles (16).

3. A double-belt quantitative feeder as claimed in claim 2, characterized in that: The feeding mechanism (02) includes a connecting frame (21), a second motor (22), a second speed reducer (23), two groups of second conveying rollers (24), four groups of second baffles (25), a second conveyor belt (26) and a feeding hopper (27). The bottom end of the connecting frame (21) is connected to the top end of the support frame (11). The second motor (22) is mounted on the connecting frame (21). The second speed reducer (23) is mounted on the connecting frame (21). The two groups of second conveying rollers (24) are rotatably mounted on the connecting frame (21). Two groups of second baffles (25) are mounted on each group of second conveying rollers (24). The second conveyor belt (26) is tensioned and mounted between the two groups of second conveying rollers (24) and between the four groups of second baffles (25). The feeding hopper (27) is mounted on the connecting frame (21).

4. A double-belt quantitative feeder as claimed in claim 2, characterized in that: The metering mechanism (03) includes a gravity sensor (31), two sets of weight-supporting rollers (32) and a weight rack (33), wherein the gravity sensor (31) is mounted on the support frame (11), the two sets of weight-supporting rollers (32) are both rotatably mounted on the gravity sensor (31), and the bottom end of the weight rack (33) is connected to the top end of the gravity sensor (31).

5. A double-belt quantitative feeder as claimed in claim 2, characterized in that: The tensioning mechanism (04) comprises a rotating shaft (41), a damper (42), a hand wheel (43), two sets of connecting rods (44) and a tensioning roller (45), wherein the rotating shaft (41) is rotatably mounted on the support frame (11), the damper (42) is mounted on the rotating shaft (41), the hand wheel (43) is mounted on the rotating shaft (41), the two sets of connecting rods (44) are both mounted on the rotating shaft (41), and the tensioning roller (45) is rotatably mounted between the two sets of connecting rods (44).

6. A double-belt quantitative feeder as claimed in claim 3, characterized in that: The purge mechanism (05) includes a lower slide (51), two sets of side baffles (52), a rubber baffle (53), a dust collecting hopper (54), an air pump (55), an air pipe (56) and multiple sets of high-pressure nozzles (57), the lower slide (51) is mounted on the connecting frame (21), the two sets of side baffles (52) are mounted on the lower slide (51), the bottom end of the rubber baffle (53) is connected to the top end of the lower slide (51), the dust collecting hopper (54) is mounted on the lower slide (51), the air pump (55) is mounted on the supporting frame (11), the air pipe (56) is mounted on the air pump (55), and the multiple sets of high-pressure nozzles (57) are mounted on the air pipe (56) and communicated with the inside of the air pipe (56).

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