CN112167372B - A flow control unit for tea production line - Google Patents

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: lever frame, valve and telescopic link; 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 bracket; when the telescopic rod stretches, the lever bracket rotates around the hinge shaft of the telescopic rod and drives the valve to move; a discharge hole is formed in the bottom end of the feed hopper; the movement track of the valve passes through the discharge port, and the opening of the discharge port changes along with the position change of the valve; the transport part is arranged below the discharge hole and is used for transporting tea leaves output from the discharge hole. 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, adapts to tea making requirements of different tea types, and improves the quality of finished tea products of machine-made tea.

Description

A 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 used in a tea production line.

Background technique

The feeding uniformity and accuracy of the key equipment in the tea production line directly affect the quality of tea processing. Since the current tea production line does not have a flow control unit, the feeding on the conveyor belt is uneven, such as greening, shaping, and baking. Due to the uncertainty of feeding in the process, there is often a waiting state of too much incoming material or temporarily no material in the relevant equipment. When the incoming material suddenly increases, it will cause defects such as insufficient finishing, uneven shape or insufficient baking; When the incoming material suddenly decreases, it will cause burnt flakes, broken tea and burnt. All of the above are related to the current production line that only relies on the belt speed of the conveyor belt to control the feeding, and the output of the production link is caused by non-uniform output. flat loss) caused by feeding.

Contents of the invention

In order to solve the above-mentioned defects in the prior art, the present invention proposes a flow control unit for a tea production line.

The present invention adopts following technical scheme:

A flow control unit for a tea production line, comprising: a feeding hopper, a feeding part and a transporting part;

The feeding part includes: a lever frame, a valve and a telescopic rod; 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 is hinged with the lever frame; when the telescopic rod stretches, the lever The frame rotates around its hinge axis and drives the valve to move;

There is a discharge port at the bottom of the feed hopper; the trajectory of the valve passes through the discharge port, and the opening of the discharge port changes with the position of the valve;

The transportation part is installed under the discharge port and is used for transporting the tea leaves output from the discharge port.

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; and the center axis of the arc-shaped panel is collinear with the rotation axis of the lever frame; the inner wall of the valve fits the outer wall of the arc-shaped panel .

Preferably, it also includes a control part; the telescopic rod adopts an electric push rod, and the transportation part includes a bracket and a discharge conveyor belt; the control part includes a processor and at least one pressure sensor installed on the bracket; the discharge conveyor belt is installed on the bracket The upper part is used to transport the tea leaves output from the discharge port; the pressure sensor is used to weigh the discharge conveyor belt; the processor is connected to each pressure sensor and the telescopic rod, and is used to control the operation of the telescopic rod according to the detection value of the pressure sensor.

Preferably, the control part also includes an inductor installed on the running track of the discharge conveyor belt and at least one induced sensor installed on the discharge conveyor belt; the processor is also connected to the inductor and the induced sensor respectively; When the sensor acquires the sensed object, the stretching amount of the telescopic rod is calculated according to the detection value of the pressure sensor.

Preferably, the sensor is a Hall sensor, and the sensor is a magnet.

Preferably, a first side plate and a second side plate are installed on the bracket, and the first side plate and the second side plate are installed on opposite sides of the discharge conveyor belt parallel to the running direction of the discharge conveyor belt.

Preferably, the transportation part further includes: a partition conveyor belt; the partition conveyor belt is installed on the bracket and located above the discharge conveyor belt, and the partition conveyor belt is used to transport the tea leaves output from the discharge port to the discharge conveyor belt superior.

Preferably, a third side plate and a fourth side plate are also installed on the bracket, and the third side plate and the fourth side plate are installed on opposite sides of the separator conveyor belt parallel to the running direction of the separator conveyor belt.

Preferably, a material level sensor is installed on the feeding hopper, and the material level sensor is connected to an external feeding device, and the feeding device is used to control the filling speed to the feeding hopper according to the detection value of the material level sensor.

Preferably, a vibration motor for driving vibration is also installed on the feed hopper.

The advantages of the present invention are:

(1) The telescopic rod drives the valve movement through the lever frame to control the opening of the discharge port, realizing the flexible adjustment of the tea feeding speed; and the arc valve design is adopted, compared with the plane valve, it avoids opening by rotation. The movement interference caused by closing the valve reduces the extrusion of the tea leaves and avoids the generation of broken tea to the greatest extent.

(2) A pressure sensor and an electric push rod are installed to realize automatic control of the opening of the discharge port according to the flow of tea leaves to ensure smooth feeding of tea leaves.

(3) Through the cooperation of the pressure sensor and the Hall sensor, the actual flow of the discharge conveyor belt can be accurately detected, and the automatic and precise control of the tea flow is realized, that is, the control of a single flow can be completed, and it can also be realized according to the needs of the tea making process. Variable flow control.

(4) The mechanical system is composed of U-shaped lever frame and telescopic rod, which can quickly change the position of the valve and form an automatic flow control system with negative feedback to achieve stable material supply in the production line. The mechanical system cooperates with the control unit, which has higher precision, faster response and smaller error.

(5) The side wall connecting the feed hopper and the telescopic rod is inclined, specifically, it can be tilted at an angle of 70 degrees, which increases the minimum pressure angle of the telescopic rod, makes the rotation of the lever frame more sensitive, and the system responds faster.

(6) The flow control unit proposed by the present invention is applied between the discharge port of the conveyor (vertical or flat conveying) and key equipment, and realizes the uniform flow control of the entire production line to adapt to the production of different teas. Tea demand, while improving the quality of finished tea from machine-made tea.

Description of drawings

Fig. 1 is a front view of a flow control unit used in a tea production line proposed by the present invention.

Fig. 2 is a rear view of a flow control unit used in a tea production line proposed by the present invention.

Figure 3 is a structural diagram of the feed hopper.

Figure 4 is a structural diagram of the lever frame.

Fig. 5 is a structural diagram of a partition conveyor belt.

Figure 6 is a structural diagram of the discharge conveyor belt.

Figure 7 is a structural diagram of the material level sensor.

Figure 8 is a structural diagram of the telescopic rod.

Figure 9 is a structural diagram of the vibration motor.

The meanings of the marks in the accompanying drawings are as follows:

1-feed hopper; 10-upper mounting flange; 11-upper hinge support; 12-first hinge support; 13-second hinge support; 14-discharge port; 15-bottom mounting flange; 16 - material level sensor installation hole; 2- lever frame; 21- valve; 22- lower hinge support; 23- telescopic rod; 24- pin shaft installation hole; Plate conveyor belt; 32-partition conveyor belt motor; 33-bracket; 40-first side plate; 41-discharge conveyor belt; 42-motor flange; 43-magnet Ⅰ; 44-discharge motor; 45-installation Bracket; 46-inductor; 47-magnet II; 48-second side plate; 51-first S-type pressure sensor; 52-second S-type pressure sensor; 53-third S-type pressure sensor; 54-fourth S-type pressure sensor; 6-vibration motor; 7-material level sensor; 71-rotary motor blade.

Detailed ways

Referring to Fig. 1 and Fig. 2, a flow control unit for a tea production line proposed in this embodiment includes: a feeding hopper 1, a feeding part and a transporting part.

Referring to FIG. 4 , the blanking part includes: a lever frame 2 , a valve 21 and a 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 its hinged shaft, and drives the valve 21 to move.

Referring to FIG. 3 , a discharge port 14 is provided at the bottom of the feed hopper 1 . The movement trajectory of the valve 21 passes through the discharge port 14 , and the opening of the discharge port 14 changes with the position of the valve 21 . Specifically, during the rotation of the lever frame 2 , the valve 21 is driven to slide against the plane where the discharge port 14 is located, so as to adjust the opening of the discharge port 14 .

Specifically, in this embodiment, the telescopic rod 23 and the lever frame 2 are located on opposite sides of the feed hopper 1, so that the telescopic movement of the telescopic rod 23 drives the valve 21 to rotate around the rotation axis of the lever frame 2. During specific implementation, the side wall connecting the feed hopper 1 and the telescopic rod 23 is arranged obliquely, specifically at an angle of 70 degrees with the vertical direction, and the inclination direction is opposite to the telescopic rod 23, so as to expand the pressure angle of the telescopic rod 23 and improve the telescopic flexibility. And in this embodiment, the upper end and the lower end of the feeding hopper 1 are provided with an upper mounting flange 10 and a lower mounting flange 15 respectively, so that the feeding hopper 1 can be installed through the upper mounting flange 10 and the lower mounting flange 15 .

Specifically, in this embodiment, the lever frame 2 adopts a U-shaped frame structure, and one side of the feed hopper 1 is provided with a first hinge support 12 and a second hinge support 13 opposite to each other. The two hinge supports 13 are provided with pin mounting holes 24 . The lever bracket 33 is sleeved on the outer periphery of the hopper, and is hingedly connected to the first hinge support 12 and the second hinge support 13 through the pin shaft 25, and the two ends of the pin shaft 25 are matched with the two pin shaft mounting holes 24 respectively. The lever frame 2 rotates around the pin shaft 25 as an axis. Valve 21 is arranged on the open end of lever frame 2, and the end of lever frame 2 far away from valve 21 is equipped with lower hinge support 22, is provided with upper hinge support 1111 on the feeding hopper, and the two ends of telescopic rod 23 are connected with upper respectively. The hinge support 1111 and the lower hinge support 22 are hinged.

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. And the center axis of the arc-shaped panel is collinear with the rotation axis of the lever frame 2; the inner wall of the valve 21 fits the outer wall of the arc-shaped panel. That is, the inwall of the arc-shaped panel and the valve 21 is all located on the circle with pin 25 as the center of the circle, so that during the rotation process of the lever frame 2 driven by the telescopic rod 23 telescopically, the valve 21 rotates with the rotation of the lever frame 2, thereby Adjust the opening of the discharge port 14.

In this embodiment, the curved valve 21 is designed. Compared with the plane valve 21, it avoids the movement interference caused by opening and closing the valve 21 in a rotating manner, and at the same time reduces the extrusion of the tea leaves, and avoids the damage of broken tea to the greatest extent. produce.

The transportation part is installed below the discharge port 14 and is used for transporting the tea leaves output from the discharge port 14 .

Specifically, the transportation part includes a bracket 33 and a discharge conveyor belt 41 . The discharge conveyor belt 41 is installed on the support 33 and is used for conveying the tea leaves output from the discharge port 14 . In this embodiment, the discharge conveyor belt 41 is driven by a discharge motor 44 installed on the bracket 33 , and the discharge motor 44 is connected to the driving shaft of the discharge conveyor belt 41 through a motor flange 42 . During specific implementation, the first side plate 40 and the second side plate 48 can also be set on the support 33, and the first side plate 40 and the second side plate 48 are installed on the discharge conveyor belt 41 parallel to the running direction of the discharge conveyor belt 41. opposite sides. The first side plate 40 and the second side plate 48 can prevent the tea leaves on the discharge conveyor belt 41 from falling from both sides during transportation.

Specifically, the flow control unit for the tea production line further includes a control unit, the control unit includes a processor and at least one pressure sensor installed on the bracket 33 . The telescopic rod 23 adopts an electric push rod, as shown in Figure 8; the pressure sensor is used to weigh the discharge conveyor belt 41; the processor is connected to each pressure sensor and the telescopic rod 23 for detecting Value controls telescopic rod 23 work.

Specifically, the processor calculates the tea flow rate on the discharge conveyor belt 41 according to the detection value of the pressure sensor, and judges whether the tea flow rate is greater than or less than the preset flow range; if the tea flow rate is less than the preset flow range, the processor controls The telescopic rod 23 is extended to drive the valve 21 to move up, and the opening of the discharge port 14 is enlarged to increase the discharge speed of the discharge port 14; if the flow rate of tea leaves is greater than the preset flow range, the processor controls the telescopic rod 23 to shorten, Move down with driving shutter 21, narrow discharge port 14 openings, thereby reduce discharge port 14 discharge speeds.

Referring to FIG. 6 , specifically, in this embodiment, the control part further includes a sensor 46 installed on the running track of the discharge conveyor belt 41 and at least one sensor to be sensed installed on the discharge conveyor belt 41 . The processor is also connected to the sensor 46 and the sensor; the processor is used to calculate the stretching amount of the telescopic rod 23 according to the detection value of the pressure sensor when the sensor 46 senses the sensor. Specifically, in this embodiment, the inductor is a Hall sensor, which is installed on the first side plate 40 through the mounting bracket 45 ; the inductor is a magnet. Moreover, two induced sensors are arranged on the discharge conveyor belt 41 . In the present embodiment, when the first one is sensed by the sensor 43, that is, the magnet I is sensed by the sensor 45, the processor starts timing until the second one is sensed by the sensor 47, that is, the magnet II is sensed by the sensor 45; The device obtains the tea weight detected by the pressure sensor during the timing period and takes the average value, and divides the obtained tea weight by the above timing period to obtain the real-time tea flow.

Referring to FIG. 5, specifically, in this embodiment, four pressure sensors are provided on the bracket 33, namely, a first S-type pressure sensor 51, a second S-type pressure sensor 52, a third S-type pressure sensor 53 and a fourth S-type pressure sensor. type pressure sensor 54; and the four pressure sensors are arranged in a rectangular shape on the bracket 33, and the discharge conveyor belt 41 is against the four pressure sensors from above. Specifically, in this embodiment, the bracket 33 is a rectangular frame structure, and four pressure sensors are distributed and arranged on four vertical connecting rods of the bracket 33 .

In this embodiment, the transportation part further includes: a partition conveyor belt 31 . The partition conveyor belt 31 is installed on the support 33 and is positioned above the discharge conveyor belt 41. The partition conveyor belt 31 is used to transport the tea leaves output by the outlet 14 to the discharge conveyor belt 41. The partition conveyor belt 31 is driven by dividing plate conveyor belt motor 32. The separator conveyor belt 31 has the function of forced discharge, and has the function of uniform discharge, which can reduce the non-uniformity of discharge, especially in the case of a small opening of the discharge port, and can discharge stably.

In this embodiment, the third side plate 30 and the fourth side plate are also installed on the bracket 33, and the third side plate 30 and the fourth side plate are installed on the opposite side of the partition conveyor belt 31 parallel to the running direction of the partition conveyor belt 31. Both sides, to avoid the tealeaves on the clapboard conveyor belt 31 from falling.

In this embodiment, a material level sensor 7 is also installed on the feed hopper 1, and the material level sensor 7 is connected to an external feeding device, and the feeding device is used to control the feeding of materials according to the detection value of the material level sensor 7. The filling speed of the hopper 1 is to ensure the stable material level of the tea leaves in the hopper 1 and ensure the stable operation of the control unit. Specifically, refer to Fig. 2 and Fig. 7; the material level sensor 7 adopts a rotary motor material level sensor, which is installed on the feed hopper through the reserved material level sensor installation hole on the feed hopper.

Referring to Fig. 1 and Fig. 9, in this embodiment, a vibrating motor 6 for driver vibration is also installed on the feeding hopper 1, so as to ensure that even the relatively sticky tea leaves can flow out of the valve 21 smoothly, Not clogged.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (8)

1. A flow control unit for a tea production line, characterized in that it comprises: a feed hopper (1), a feeding section and a transport section; The blanking part includes: a lever frame (2), a valve (21) and a 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 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) stretches, the lever frame (2) rotates around its hinge axis and drives the valve (21) to move ; The bottom end of the feed hopper (1) is provided with a discharge port (14); the trajectory of the valve (21) passes through the discharge port (14), and the opening of the discharge port (14) changes with the position of the valve (21) and change; The transportation part is installed under the discharge port (14), and is used for transporting the tea leaves output from the discharge port (14); The flow control unit for the tea production line also includes a control part; the telescopic rod (23) adopts an electric push rod, and the transportation part includes a bracket (33) and a discharge conveyor belt (41); the control part includes a processor and At least one pressure sensor installed on the support (33); the discharge conveyer belt (41) is installed on the support (33) for transporting the tea leaves output by the discharge port (14); the pressure sensor is used to weigh the output Material conveyor belt (41); Described processor connects each pressure sensor and telescopic link (23), is used for controlling telescopic link (23) work according to the detected value of pressure sensor; The control part also includes an inductor installed on the running track of the discharge conveyor belt (41) and at least one induced sensor installed on the discharge conveyor belt (41); the processor is also connected to the inductor and the induced sensor respectively ; The processor is used to calculate the stretching amount of the telescopic rod (23) according to the detection value of the pressure sensor when the sensor acquires the sensed sensor. 2. The flow control unit for tea production line as claimed in claim 1, characterized in that, the lower part of the feed hopper (1) is provided with a curved panel, and the discharge port (14) is arranged on the curved panel; And the center axis of the arc panel is collinear with the rotation axis of the lever frame (2); the inner wall of the valve (21) fits the outer wall of the arc panel. 3. The flow control unit for tea production line according to claim 1, characterized in that the sensor is a Hall sensor, and the sensor is a magnet. 4. The flow control unit for tea production line as claimed in claim 1, characterized in that, a first side plate (40) and a second side plate (48) are also installed on the support (33), and the first side plate 40 and the second side plate 48 are installed on opposite sides of the discharge conveyor belt (41) parallel to the running direction of the discharge conveyor belt (41). 5. The flow control unit for tea production line as claimed in claim 1, characterized in that, the transportation part further comprises: a partition conveyor belt (31); the partition conveyor belt (31) is installed on the support (33) and Located above the discharge conveyor belt (41), the partition conveyor belt (31) is used to transport the tea leaves output from the discharge port (14) to the discharge conveyor belt (41). 6. The flow control unit for tea production line as claimed in claim 5, characterized in that, a third side plate (30) and a fourth side plate are also installed on the support (33), and the third side plate (30) Parallel to the running direction of the partition conveyor belt (31) with the fourth side plate, it is installed on opposite sides of the partition conveyor belt (31). 7. The flow control unit for tea production line according to claim 1, characterized in that, a material level sensor (7) is also installed on the feed hopper (1), and the material level sensor (7) is connected to an external The feed device is connected, and the feed device is used to control the filling speed to the feed hopper (1) according to the detection value of the material level sensor (7). 8. The flow control unit for tea production line according to claim 1, characterized in that, a vibration motor (6) for driving vibration is also installed on the feed hopper (1).

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