CN112167372A

CN112167372A - Flow control unit for tea production line

Info

Publication number: CN112167372A
Application number: CN202011039201.4A
Authority: CN
Inventors: 李兵
Original assignee: Anhui Agricultural University AHAU
Current assignee: Anhui Agricultural University AHAU
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-01-05
Anticipated expiration: 2040-09-28
Also published as: CN112167372B

Abstract

The invention provides a flow control unit for a tea production line, which comprises: a feed hopper, a blanking part and a conveying part; the unloading portion includes: the lever frame, the valve and the telescopic rod are arranged on the frame; the lever frame is hinged with the feed hopper, and the valve is connected with the lever frame; one end of the telescopic rod is hinged with the feed hopper, and the other end of the telescopic rod is hinged with the lever frame; when the telescopic rod is stretched, the lever frame rotates around the hinged shaft of the lever frame and drives the valve to move; a discharge hole is formed at the bottom end of the feed hopper; the motion track of the valve passes through the discharge port, and the opening degree of the discharge port is changed along with the position change of the valve; the transportation portion is installed in the discharge gate below for the tealeaves of transportation from the discharge gate output. The flow control unit provided by the invention is applied between the discharge port of the conveyor and key equipment, realizes uniform flow control of the whole production line so as to adapt to the tea making requirements of different tea types and improve the quality of finished tea of machine-made tea.

Description

Flow control unit for tea production line

Technical Field

The invention relates to the field of tea processing equipment, in particular to a flow control unit for a tea production line.

Background

The tea processing quality is directly influenced by the feeding uniformity and feeding accuracy of key equipment in a tea production line, the feeding on a conveying belt is not uniform due to the fact that a flow control unit is not designed in the existing tea production line, for example, a waiting state that too many incoming materials are accumulated or no materials are temporarily generated in related equipment due to uncertain feeding in the processes of enzyme deactivation, shaping and baking is often generated, and when the number of the incoming materials is increased suddenly, the defects of insufficient enzyme deactivation, uneven shaping, insufficient baking and the like are caused; when the incoming material is suddenly reduced, the coke, broken tea, scorch and the like are caused. The above processes are all caused by that the feeding is controlled only by the belt speed of the conveyer belt in the current production line, and the discharging is caused by non-uniform discharging in the production link, that is, the current tea production line is not equipped with an accurate flow control unit and is caused only by the feeding of the conveyer (vertical or horizontal conveying).

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a flow control unit for a tea production line.

The invention adopts the following technical scheme:

a flow control unit for a tea production line, comprising: a feed hopper, a blanking part and a conveying part;

the unloading portion includes: the lever frame, the valve and the telescopic rod are arranged on the frame; the lever frame is hinged with the feed hopper, and the valve is connected with the lever frame; one end of the telescopic rod is hinged with the feed hopper, and the other end of the telescopic rod is hinged with the lever frame; when the telescopic rod is stretched, the lever frame rotates around the hinged shaft of the lever frame and drives the valve to move;

a discharge hole is formed at the bottom end of the feed hopper; the motion track of the valve passes through the discharge port, and the opening degree of the discharge port is changed along with the position change of the valve;

the transportation portion is installed in the discharge gate below for the tealeaves of transportation from the discharge gate output.

Preferably, the lower part of the feed hopper is provided with an arc-shaped panel, and the discharge port is arranged on the arc-shaped panel; the central axis of the arc panel is collinear with the rotation axis of the lever frame; the inner wall of the valve is attached to the outer wall of the arc-shaped panel.

Preferably, the device further comprises a control part; the telescopic rod adopts an electric push rod, and the conveying part comprises a bracket and a discharging conveying belt; the control part comprises a processor and at least one pressure sensor arranged on the bracket; the discharging conveyer belt is arranged on the bracket and is used for conveying the tea leaves output by the discharging port; the pressure sensor is used for weighing the discharging conveyer belt; the processor is connected with each pressure sensor and the telescopic rod and used for controlling the telescopic rod to work according to the detection value of the pressure sensor.

Preferably, the control part further comprises a sensor arranged on the running track of the discharging conveying belt and at least one sensor arranged on the discharging conveying belt; the processor is also respectively connected with the inductor and the inductor; the processor is used for calculating the telescopic rod stretching amount according to the detection value of the pressure sensor when the sensor obtains the sensed object.

Preferably, the inductor is a hall sensor, and the inductor is a magnet.

Preferably, the support is further provided with a first side plate and a second side plate, and the first side plate and the second side plate are arranged on two opposite sides of the discharging conveying belt in a manner of being parallel to the running direction of the discharging conveying belt.

Preferably, the transport section further comprises: a separator conveyor belt; the baffle conveyer belt is installed on the support and is located ejection of compact conveyer belt top, and the baffle conveyer belt is used for with tealeaves of discharge gate output transports on the ejection of compact conveyer belt.

Preferably, the bracket is further provided with a third side plate and a fourth side plate, and the third side plate and the fourth side plate are arranged on two opposite sides of the partition conveyer belt in parallel with the running direction of the partition conveyer belt.

Preferably, still install level sensor on the feeder hopper, level sensor is connected with external supplied materials device, supplied materials device is used for the filler speed to the feeder hopper according to level sensor's detected value control.

Preferably, a vibration motor for vibrating the driver is further installed on the feed hopper.

The invention has the advantages that:

(1) the telescopic rod drives the valve to move through the lever frame so as to control the opening of the discharge hole, and the flexible adjustment of the tea leaf discharging speed is realized; and adopt the design of arc valve, compare with the plane valve, avoided opening and shutting the motion interference that the valve produced with the rotation mode, reduced the extrusion to tealeaves simultaneously, avoid the production of garrulous tea to the at utmost.

(2) Set up pressure sensor and electric putter, realized according to tealeaves flow automatic control discharge gate aperture to guarantee the steady unloading of tealeaves.

(3) Through the cooperation of pressure sensor and hall sensor, can accurate detection ejection of compact conveyer belt's actual flow, realized the automatic accurate control of tealeaves flow, can accomplish the control of single flow, also can realize variable flow control according to the needs of tea-making technology.

(4) A mechanical system is formed by the U-shaped lever frame and the telescopic rod, the position of the valve can be changed rapidly, and a negative feedback automatic flow control system is formed to realize stable feeding of a production line. The mechanical system is matched with the control part, so that the precision is higher, the response is faster, and the error is smaller.

(5) The lateral wall slope setting that feeder hopper and telescopic link are connected, specific 70 degrees angles of tilting for the minimum pressure angle of telescopic link increases, and lever rack rotates more sensitively, and system response is faster.

(6) The flow control unit provided by the invention is applied between a discharge port of a conveyor (vertical or horizontal conveying) and key equipment, realizes uniform flow control of the whole production line so as to adapt to the tea making requirements of different tea types and improve the quality of finished tea of machine-made tea.

Drawings

Fig. 1 is a front view of a flow control unit for a tea production line according to the present invention.

Fig. 2 is a rear view of a flow control unit for a tea production line according to the present invention.

FIG. 3 is a view showing the structure of a hopper.

Fig. 4 is a diagram showing a structure of a lever frame.

Fig. 5 is a view showing the structure of the separator conveyor.

Fig. 6 is a structure view of the discharging conveyor belt.

FIG. 7 is a structural view of a level sensor.

Fig. 8 is a structure view of the telescopic rod.

Fig. 9 is a structural view of the vibration motor.

The designations in the drawings have the following meanings:

1-a feed hopper; 10-installing a flange; 11-upper hinge support; 12-a first hinge support; 13-a second hinge support; 14-a discharge hole; 15-lower mounting flange; 16-a level sensor mounting hole; 2-a lever frame; 21-a shutter; 22-lower hinge support; 23-a telescopic rod; 24-pin shaft mounting holes; 25-a pin shaft; 30-a third side panel; 31-a spacer conveyor belt; 32-spacer conveyor belt motor; 33-a scaffold; 40-a first side panel; 41-a discharge conveyer belt; 42-a motor flange; 43-magnet I; 44-discharge motor; 45-mounting a bracket; 46-an inductor; 47-magnet II; 48-a second side panel; 51-a first S-type pressure sensor; 52-second S-shaped pressure sensor; 53-third S-type pressure sensor; 54-a fourth S-type pressure sensor; 6-a vibration motor; 7-a level sensor; 71-resistance rotating type motor blade.

Detailed Description

Referring to fig. 1 and 2, the flow control unit for a tea production line according to the present embodiment includes: feed hopper 1, unloading portion and transportation portion.

Referring to fig. 4, the blanking portion includes: lever frame 2, valve 21 and telescopic rod 23. The lever frame 2 is hinged with the feed hopper 1, and the valve 21 is connected with the lever frame 2. One end of the telescopic rod 23 is hinged with the feed hopper 1, and the other end is hinged with the lever frame 2. When the telescopic rod 23 is extended, the lever frame 2 rotates around the hinge shaft thereof and drives the valve 21 to move.

Referring to fig. 3, the bottom end of the feed hopper 1 is provided with a discharge hole 14. The motion track of the shutter 21 passes through the discharge port 14, and the opening degree of the discharge port 14 is changed along with the position change of the shutter 21. Specifically, in the rotating process of the lever frame 2, the valve 21 is driven to slide along the plane where the discharge port 14 is located, so as to adjust the opening degree of the discharge port 14.

Specifically, in this embodiment, the telescopic rod 23 and the lever frame 2 are located on two opposite sides of the feeding hopper 1, so that the valve 21 is driven to rotate around the rotation axis of the lever frame 2 by the telescopic motion of the telescopic rod 23. During concrete implementation, the lateral wall slope setting that feeder hopper 1 and telescopic link 23 are connected, specifically with vertical direction contained angle 70 degrees, and incline direction and telescopic link 23 are opposite to enlarge telescopic link 23 pressure angle, improve flexible flexibility ratio. And in this embodiment, the upper end and the lower end of the feeding hopper 1 are respectively provided with an upper mounting flange 10 and a lower mounting flange 15, so that the feeding hopper 1 can be mounted through the upper mounting flange 10 and the lower mounting flange 15.

Specifically, in this embodiment, the lever frame 2 is of a U-shaped frame structure, the first hinge support 12 and the second hinge support 13 are disposed on one side of the feeding hopper 1, and the first hinge support 12 and the second hinge support 13 are both provided with the pin shaft mounting hole 24. The lever bracket 33 is sleeved on the periphery of the discharge hopper and is hinged with the first hinge support 12 and the second hinge support 13 through a pin shaft 25, and two ends of the pin shaft 25 are respectively matched with the shaft holes of the two pin shaft mounting holes 24. The lever frame 2 rotates around the pin shaft 25. The valve 21 sets up the open end at lever frame 2, and hinge support 22 is down installed to the one end of keeping away from valve 21 on lever frame 2, is equipped with hinge support 1111 on the feeder hopper 1, and the both ends of telescopic link 23 are articulated with hinge support 1111 and lower hinge support 22 respectively.

In this embodiment, the lower part of the feeding hopper 1 is provided with an arc-shaped panel, and the discharge port 14 is arranged on the arc-shaped panel. The central axis of the arc panel is collinear with the rotation axis of the lever frame 2; the inner wall of the shutter 21 is attached to the outer wall of the arc panel. That is, the arc panel and the inner wall of the valve 21 are both located on a circle with the pin shaft 25 as the center of circle, so that the valve 21 rotates along with the rotation of the lever frame 2 in the process of driving the lever frame 2 to rotate by the telescopic rod 23, and the opening of the discharge hole 14 is adjusted.

In this embodiment, the arc-shaped shutter 21 design is adopted, compared with the planar shutter 21, the movement interference generated by opening and closing the shutter 21 in a rotating manner is avoided, meanwhile, the extrusion to the tea leaves is reduced, and the generation of broken tea is avoided to the greatest extent.

The transportation portion is installed in discharge gate 14 below for the tealeaves material of transportation from discharge gate 14 output.

Specifically, the transport section includes a rack 33 and a discharge conveyor belt 41. The discharging conveyer belt 41 is installed on the bracket 33 and used for conveying the tea material output by the discharging port 14. In this embodiment, the discharge conveyor belt 41 is driven by a discharge motor 44 mounted on the support 33, and the discharge motor 44 is connected to the drive shaft of the discharge conveyor belt 41 via a motor flange 42. In specific implementation, a first side plate 40 and a second side plate 48 may be further disposed on the bracket 33, and the first side plate 40 and the second side plate 48 are installed on two opposite sides of the discharging conveyor belt 41 in parallel with the running direction of the discharging conveyor belt 41. The first side plate 40 and the second side plate 48 can prevent tea materials on the discharging conveyer belt 41 from falling from two sides in the transportation process.

Specifically, the flow control unit for the tea production line further comprises a control part, and the control part comprises a processor and at least one pressure sensor arranged on the bracket 33. The telescopic rod 23 adopts an electric push rod, as shown in fig. 8; the pressure sensor is used for weighing the discharging conveyer belt 41; the processor is connected with each pressure sensor and the telescopic rod 23 and is used for controlling the telescopic rod 23 to work according to the detection value of the pressure sensor.

Specifically, the processor calculates the tea flow on the discharging conveyor belt 41 according to the detection value of the pressure sensor, and judges whether the tea flow is greater than or less than a preset flow interval; if the flow of the tea leaves is smaller than the preset flow interval, the processor controls the telescopic rod 23 to extend so as to drive the valve 21 to move upwards and expand the opening of the discharge hole 14, so that the discharge speed of the discharge hole 14 is increased; if the tea flow is larger than the preset flow interval, the processor controls the telescopic rod 23 to be shortened so as to drive the valve 21 to move downwards and reduce the opening degree of the discharge port 14, thereby reducing the discharge speed of the discharge port 14.

Referring to fig. 6, in the present embodiment, the control unit further includes a sensor 46 mounted on the running track of the discharging conveyor 41 and at least one sensor mounted on the discharging conveyor 41. The processor is also connected to the sensor 46 and the sensed object; the processor is used for calculating the expansion amount of the telescopic rod 23 according to the detection value of the pressure sensor when the sensor 46 senses the sensed sensor. Specifically, in the present embodiment, the sensor is a hall sensor, which is mounted on the first side plate 40 through a mounting bracket 45; the inductor adopts a magnet. And, two sensors are arranged on the discharging conveyer belt 41. In this embodiment, the processor starts timing when the first sensor 43, i.e., the magnet I, is sensed by the sensor 45, and ends timing when the second sensor 47, i.e., the magnet II, is sensed by the sensor 45; then the processor obtains the tea weight detected by the pressure sensor in the timing time period and takes the average value, and the real-time tea flow is obtained by dividing the obtained tea weight by the timing time period.

Referring to fig. 5, in the present embodiment, four pressure sensors, namely, a first S-shaped pressure sensor 51, a second S-shaped pressure sensor 52, a third S-shaped pressure sensor 53 and a fourth S-shaped pressure sensor 54 are provided on the bracket 33; and four pressure sensors are arranged on the support 33 in a rectangular shape, against which the outfeed conveyor belt 41 abuts from above. Specifically, in the present embodiment, the bracket 33 has a rectangular frame structure, and four pressure sensors are distributed on four vertical links of the bracket 33.

In this embodiment, the transport unit further includes: the separator conveyer belt 31. Baffle conveyer belt 31 is installed on support 33 and is located ejection of compact conveyer belt 41 top, and baffle conveyer belt 31 is used for with the tealeaves material of discharge gate 14 output transports ejection of compact conveyer belt 41 on, baffle conveyer belt 31 passes through baffle conveyer belt motor 32 drive. The partition conveyer belt 31 has a function of forcibly discharging, has a function of uniformly discharging, and can reduce the nonuniformity of the discharged material, particularly, can stably discharge the material under the condition of a small opening degree of a discharge port.

In this embodiment, the bracket 33 is further provided with a third side plate 30 and a fourth side plate, and the third side plate 30 and the fourth side plate are arranged on two opposite sides of the partition conveyer belt 31 in parallel with the running direction of the partition conveyer belt 31 to prevent the tea leaves on the partition conveyer belt 31 from falling.

In this embodiment, still install material level sensor 7 on feeder hopper 1, material level sensor 7 is connected with external supplied materials device, supplied materials device is arranged in controlling the speed of packing to feeder hopper 1 according to material level sensor 7's detected value to guarantee the stable material level of tealeaves in feeder hopper 1, guarantee the stability of this the control unit work. Specifically, refer to fig. 2 and 7; the material level sensor 7 adopts a rotation-resistant motor material level sensor and is arranged on the feed hopper through a material level sensor mounting hole reserved on the feed hopper.

Referring to fig. 1 and 9, in the present embodiment, the vibration motor 6 for vibrating the driver is further installed on the feeding hopper 1, so that even relatively sticky tea leaves can smoothly flow out of the shutter 21 without being blocked when the tea leaves are in the process of de-enzyming or twisting the tea leaves.

The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. A flow control unit for a tea production line, comprising: a feed hopper (1), a blanking part and a conveying part;

the unloading portion includes: the lever frame (2), the valve (21) and the telescopic rod (23); the lever frame (2) is hinged with the feed hopper (1), and the valve (21) is connected with the lever frame (2); one end of the telescopic rod (23) is hinged with the feed hopper (1), and the other end is hinged with the lever frame (2); when the telescopic rod (23) is telescopic, the lever frame (2) rotates around the hinged shaft and drives the valve (21) to move;

a discharge hole (14) is arranged at the bottom end of the feed hopper (1); the motion track of the valve (21) passes through the discharge port (14), and the opening degree of the discharge port (14) is changed along with the position change of the valve (21);

the transportation part is arranged below the discharge port (14) and used for transporting tea leaves output from the discharge port (14).

2. The flow control unit for the tea production line according to claim 1, wherein the lower part of the feed hopper (1) is provided with an arc-shaped panel, and the discharge port (14) is arranged on the arc-shaped panel; the central axis of the arc panel is collinear with the rotation axis of the lever frame (2); the inner wall of the valve (21) is attached to the outer wall of the arc-shaped panel.

3. The flow control unit for a tea production line of claim 1, further comprising a control section; the telescopic rod (23) adopts an electric push rod, and the conveying part comprises a bracket (33) and a discharging conveying belt (41); the control part comprises a processor and at least one pressure sensor arranged on the bracket (33); the discharging conveyer belt (41) is arranged on the bracket (33) and is used for conveying the tea leaves output by the discharging port (14); the pressure sensor is used for weighing the discharging conveying belt (41); the processor is connected with each pressure sensor and the telescopic rod (23) and used for controlling the telescopic rod (23) to work according to the detection value of the pressure sensor.

4. The flow control unit for a tea production line according to claim 3, wherein the control part further comprises a sensor installed on a running track of the discharging conveyor belt (41) and at least one sensor installed on the discharging conveyor belt (41); the processor is also respectively connected with the inductor and the inductor; the processor is used for calculating the stretching amount of the stretching rod (23) according to the detection value of the pressure sensor when the sensor obtains the sensed sensor.

5. The flow control unit for a tea production line as set forth in claim 4, wherein the sensor is a Hall sensor and the sensor is a magnet.

6. The flow control unit for the tea production line according to claim 3, wherein the bracket (33) is further provided with a first side plate (40) and a second side plate (48), and the first side plate 40 and the second side plate 48 are arranged on two opposite sides of the discharging conveyor belt (41) in parallel with the running direction of the discharging conveyor belt (41).

7. The flow control unit for a tea production line of claim 3, wherein the transport section further comprises: a separator conveyor belt (31); baffle conveyer belt (31) are installed on support (33) and are located ejection of compact conveyer belt (41) top, and baffle conveyer belt (31) are used for with the tealeaves of discharge gate (14) output transports on ejection of compact conveyer belt (41).

8. The flow control unit for a tea production line according to claim 7, wherein the bracket (33) is further provided with a third side plate (30) and a fourth side plate, and the third side plate (30) and the fourth side plate are arranged on two opposite sides of the partition conveyer belt (31) in parallel with the running direction of the partition conveyer belt (31).

9. The flow control unit for the tea production line as claimed in claim 1, wherein a material level sensor (7) is further installed on the feeding hopper (1), the material level sensor (7) is connected with an external feeding device, and the feeding device is used for controlling the filling speed of the feeding hopper (1) according to the detection value of the material level sensor (7).

10. A flow control unit for a tea production line according to claim 1, wherein the feed hopper (1) is further provided with a vibration motor (6) for vibration of the driver.