CN210171947U

CN210171947U - Tea winnowing system

Info

Publication number: CN210171947U
Application number: CN201920996032.XU
Authority: CN
Inventors: Zhe Ma; 马喆
Original assignee: Hubei Yu Long Tea Co Ltd
Current assignee: Hubei Yu Long Tea Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-24
Anticipated expiration: 2029-06-28

Abstract

The utility model provides a tea winnowing system, which comprises a spiral conveyer and a feeding conveyer belt, wherein the spiral conveyer is arranged in an inclined manner, the feeding conveyer belt is arranged at the discharge end of the spiral conveyer, a weighing device is arranged below the belt surface of the feeding conveyer belt, a winnowing machine is arranged below the tail end of the feeding conveyer belt, the upper surface of one end of the winnowing machine is provided with a funnel-shaped feeding port, the feeding port of the winnowing machine is right opposite to the tail end of the feeding conveyer belt, a fan is fixed at one end, close to the feeding port, in the winnowing machine, and the fan is electrically connected with; the air separator is characterized in that a discharge port is formed in an opening below the air separator, and a vibrating screen is arranged below the discharge port. Different wind power sizes can be adopted for different batches or varieties of tea leaves, waste of the tea leaves with high drying degree can be avoided, and the impurity removal rate of the tea leaves with low drying degree can be improved. In addition, impurities which have the same weight as the tea leaves but different sizes can be screened out, and the production of the tea leaves with higher quality is facilitated.

Description

Tea winnowing system

Technical Field

The utility model relates to a tea production field especially relates to a tealeaves air classification system.

Background

The tea winnowing machine is a common winnowing device, and the main principle is that light components and heavy components are separated by utilizing different weights of the components through air blowing devices such as a fan and the like.

Two problems of the existing winnowing machine generally exist: firstly, different tea leaves have different dry humidity, different tea leaves of different varieties have different sizes, and based on the reasons, the weights of different batches of tea leaves in unit volume cannot be the same, and in the production process, the tea leaves are usually winnowed by adopting the same wind power, so that the tea leaves with higher drying degree or smaller size can be wasted to a great extent, while the tea leaves with lower drying degree or larger size can be easily winnowed incompletely, and the impurity content is higher; secondly, the air separation only can not distinguish the objects with different sizes according to the different movement tracks of the objects with different weights when the objects are subjected to the transverse wind force, namely, if some impurities are very small but the weight is very large, the air separator cannot screen the impurities, or some impurities and tea leaves are heavy but are larger than the tea leaves and cannot be removed through the air separator.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a tealeaves selection by winnowing system weighs to the tealeaves of unit volume before through the selection by winnowing to adjust the technical means of the size of fan wind-force according to the weight of difference, the problem that the tealeaves that has solved the different qualities of current air separator adopted same wind-force to come the screening. Meanwhile, a vibrating screen is arranged at a discharge port of the winnowing machine, tea leaves are screened according to the size of the material, and the defect that the existing winnowing machine can only screen the tea leaves according to the weight is overcome.

In order to solve the technical problem, the utility model discloses specifically adopt following technical scheme: a tea winnowing system comprises an obliquely arranged spiral conveyor and a feeding conveyor belt arranged at the discharge end of the spiral conveyor, wherein a weighing device is arranged below the surface of the feeding conveyor belt, a winnowing machine is arranged below the tail end of the feeding conveyor belt, a funnel-shaped feeding port is arranged on the upper surface of one end of the winnowing machine, the feeding port of the winnowing machine is over against the tail end of the feeding conveyor belt, a fan is fixed at one end, close to the feeding port, in the winnowing machine, and the fan is electrically connected with the weighing device; the air separator is characterized in that a discharge port is formed in an opening below the air separator, and a vibrating screen is arranged below the discharge port.

Compared with the prior art, the utility model discloses following beneficial effect has:

different wind power sizes can be adopted for different batches or varieties of tea leaves, waste of the tea leaves with high drying degree can be avoided, and the impurity removal rate of the tea leaves with low drying degree can be improved. In addition, impurities which have the same weight as the tea leaves but different sizes can be screened out, and the production of the tea leaves with higher quality is facilitated.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the distribution structure of the splitter plate at the feed inlet.

Fig. 3 is a side view of a single diverter plate.

In the figure: 1. screw conveyer 2, material loading conveyer belt 3, air separator 4, fan 5, pan feeding mouth 6, shale shaker 71, first order screen cloth 72, second grade screen cloth 8, weighing roller 9, weighing sensor 10, support 11, flow distribution plate

Detailed Description

The following detailed description of the present invention will be made with reference to the accompanying drawings and examples.

As shown in the attached drawings 1-3, the utility model provides a tea winnowing system, which comprises a spiral conveyer 1 arranged obliquely and a feeding conveyer belt 2 arranged at the discharge end of the spiral conveyer 1, wherein a weighing device is arranged under the belt surface of the feeding conveyer belt 2, a winnowing machine 3 is arranged under the tail end of the feeding conveyer belt 2, a funnel-shaped feeding port 5 is arranged on the upper surface of one end of the winnowing machine 3, the feeding port 5 of the winnowing machine 3 is right opposite to the tail end of the feeding conveyer belt 2, a fan 4 is fixed at one end of the winnowing machine 3 close to the feeding port 5, and the fan 4 is electrically connected with the weighing device; the lower opening of the winnowing machine 3 is a discharge port, and a vibrating screen 6 is arranged below the discharge port.

The fan 4 is a positive pressure fan 4, the air inlet of the fan 4 extends out of the winnowing machine 3, and the air outlet faces the interior of the winnowing machine 3. The weighing device is connected with a controller of the winnowing system, the controller can be arranged on the winnowing machine 3, and the controller is a PLC (programmable logic controller) which is connected with the input end of the fan 4.

Furthermore, one end of the winnowing machine 3, which is far away from the discharge hole, is opened to form an impurity outlet. In order to be convenient to clean, an impurity collecting tank can be arranged below the impurity outlet.

Further, the vibrating screen 6 comprises a primary screen 71 and a secondary screen 72 which are arranged up and down, and the diameter of the screen hole of the primary screen 71 is larger than that of the screen hole of the secondary screen 72. The first-stage screen 71 can screen out some tea leaves with larger size and impurities, and the second-stage screen 72 can screen out tea leaves with smaller size and impurities. Then, the high-quality tea with average head and weight can be obtained.

Further, the weighing device includes the support 10 that sets up in the feeding conveyer belt 2 below, the support 10 is higher than the lower tape surface of feeding conveyer belt 2 and is less than the upper tape surface of feeding conveyer belt 2, still include two set up in weighing roller 8 on the support 10 to and set up in weighing roller 8 both ends and with the weighing sensor 9 of the contact of feeding conveyer belt 2 tape surface. In order to avoid non-uniform feeding speed caused by unstable voltage, the feeding conveyer belt 2 and the power supply of the screw conveyer 1 can be connected with a voltage stabilizer. The consistent volume of the tea leaves measured every time is ensured as much as possible. The weighing sensor 9 sends the signal of the weight of the tea leaves to the PLC, and then the PLC adjusts the rotating speed of the fan 4 according to the weighing condition of the weighing sensor 9, so that the wind power is adjusted. Through setting up a plurality of sensors, enlarge the area of weighing to enlarge the difference between the tealeaves weight of different drying degrees, reduced the error.

Furthermore, a plurality of shunt plates 11 arranged in parallel are arranged in the feeding port 5, and the cross sections of the shunt plates 11 are wavy. In order to avoid the influence of the falling of the tea leaves in the feed inlet 5 in a pile on the sorting effect, the splitter plate 11 can effectively disperse the tea leaves. In addition, the wavy shunting sense can change the track of the free falling body of the tea leaves, and the shunting effect is better realized.

Further, a first-stage screen 71 and a second-stage screen 72 of the vibrating screen 6 respectively correspond to a first-stage outlet and a second-stage outlet, and a first-stage discharging conveying belt and a second-stage discharging conveying belt which are different in conveying direction are respectively arranged below the first-stage outlet and the second-stage outlet. The tea leaves which are winnowed by the winnowing machine 3 respectively reach the corresponding packaging stations through the primary discharging conveyer belt and the secondary discharging conveyer belt. The separate packaging of tea leaves of different qualities after screening the size can significantly increase the yield.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. A tea winnowing system is characterized in that: the automatic weighing device comprises a spiral conveyor and a feeding conveyer belt, wherein the spiral conveyor is arranged in an inclined mode, the feeding conveyer belt is arranged at the discharge end of the spiral conveyor, a weighing device is arranged below the surface of the feeding conveyer belt, a winnowing machine is arranged below the tail end of the feeding conveyer belt, a funnel-shaped feeding port is formed in the upper surface of one end of the winnowing machine, the feeding port of the winnowing machine is opposite to the tail end of the feeding conveyer belt, a fan is fixed at one end, close to the feeding port, in the winnowing machine, and the fan is electrically; the air separator is characterized in that a discharge port is formed in an opening below the air separator, and a vibrating screen is arranged below the discharge port.

2. The tea winnowing system of claim 1, wherein: the one end that the selection by winnowing machine kept away from the discharge gate is uncovered to be impurity export.

3. The tea winnowing system of claim 1, wherein: the vibrating screen comprises a first-stage screen and a second-stage screen which are arranged up and down, and the diameter of the screen hole of the first-stage screen is larger than that of the screen hole of the second-stage screen.

4. The tea winnowing system of claim 1, wherein: the weighing device comprises a support arranged below the feeding conveying belt, two weighing rollers arranged on the support and weighing sensors arranged at two ends of the weighing rollers and in contact with the belt surface of the feeding conveying belt, wherein the support is higher than the lower belt surface of the feeding conveying belt and lower than the upper belt surface of the feeding conveying belt.

5. The tea winnowing system of claim 1, wherein: a plurality of shunt plates which are arranged in parallel are arranged in the feeding port, and the cross sections of the shunt plates are wavy.

6. A tea winnowing system according to claim 3, wherein: the first-stage screen cloth and the second-stage screen cloth of shale shaker correspond one-stage export and second grade export respectively, be equipped with the different one-stage ejection of compact conveyer belt of direction of transportation and second grade ejection of compact conveyer belt below one-stage export and the second grade export respectively.