CN212944092U - Automatic debris removing devices of tealeaves and automatic processing production line of tealeaves - Google Patents
Automatic debris removing devices of tealeaves and automatic processing production line of tealeaves Download PDFInfo
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- CN212944092U CN212944092U CN202020746532.0U CN202020746532U CN212944092U CN 212944092 U CN212944092 U CN 212944092U CN 202020746532 U CN202020746532 U CN 202020746532U CN 212944092 U CN212944092 U CN 212944092U
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Abstract
The invention provides an automatic impurity removing device for tea and an automatic tea processing production line. Automatic debris removing devices of tealeaves includes gear motor and at least one can be around self axial direction pivoted roller, the rotation of roller by gear motor control, wherein the surface of roller has debris and rejects the district, and this debris are rejected and are distinguished and have a plurality of hooks of clothThe distribution density of the hooks is 25-36/cm2And the height of the hook is 2-4 mm. The invention can quickly and effectively remove soft sundries mixed in the tea leaves, can not cause the loss of the quantity of the tea leaves or the reduction of the quality, can greatly reduce the picking cost, and is suitable for industrial production.
Description
Technical Field
The invention belongs to the field of food production and processing, and particularly relates to an automatic impurity removing device for tea and an automatic tea processing production line.
Background
The sun-dried green tea is formed by adopting sun drying after a certain processing technology, and because part of areas are influenced by regional conditions and personal living habits, the impurities in the green tea are more and various, and therefore the impurities need to be removed through a picking step.
In the picking process, most impurities can be removed through the procedures of static electricity, color selection and the like, but the removing effect of the impurities such as hair, woven belts and the like is poor. Therefore, for these impurities, the traditional way of removing the impurities is to raise the tea leaves higher than the head with both hands, then to let them fall freely, and to observe whether the tea leaves contain hair or not with naked eyes during the falling process. In order to clean the impurities, the picking workers need to repeatedly operate, so that a large amount of labor is wasted, the labor cost is increased, and the removing effect is different from person to person. More importantly, in the picking process, if the hand holding force of a worker is not well controlled or the operation is improper, the tea strip rope can be seriously damaged, so that the crushing rate is increased.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an automatic tea sundries removing device and an automatic tea processing production line, wherein the device can automatically remove sundries such as hair and the like so as to solve the problems of high manual removing cost, poor effect, high tea breakage rate and the like.
Specifically, the present invention provides:
(1) the utility model provides an automatic debris removing devices of tealeaves, includes gear motor and at least one can be around self axial direction pivoted roller, the rotation of roller by gear motor control, wherein the surface of roller has debris and rejects the district, and this debris are rejected and are distinguished and distribute a plurality of hooks, the distribution density of hook is 25-36/cm2And the height of the hook is 2-4 mm.
(2) The automatic impurity removing device for the tea leaves according to the step (1), wherein the impurity removing area is fully distributed on the roller along the circumferential direction of the roller, and the ratio of the width of the roller to the width of the impurity removing area is (1.2-1): 1.
(3) The automatic impurity removing device for the tea leaves, which is disclosed by (1), comprises 4-10 rollers which are arranged in parallel in the axial direction, the rollers are connected through a belt, and the distance between the central shafts of the adjacent rollers is 50-58 mm.
(4) The automatic sundries removing device for the tea leaves in the step (1), wherein the surface of the roller is wrapped with adhesive cloth with hooks, and the adhesive cloth with hooks forms the sundries removing area.
(5) An automatic tea processing production line, wherein the production line comprises a feeding unit, an automatic impurity removing device for tea leaves of any one of (1) to (4) and a collecting unit from upstream to downstream, the three are arranged to enable materials to be processed to be sent to the automatic impurity removing device for tea leaves from the feeding unit and then sent to the collecting unit from upstream to downstream in a continuous mode.
(6) The production line according to (5), wherein the feeding unit comprises a conveying belt, a speed reducing motor and a vertically movable material thickness control mechanism, wherein the conveying belt is controlled by the speed reducing motor and sequentially comprises a feeding end and a discharging end from upstream to downstream, and the vertically movable material thickness control mechanism is arranged above the discharging end.
(7) The production line of (6), wherein the discharge end of the conveyor belt is higher than the feeding end so that the conveyor belt forms an angle of 10-19 degrees with the horizontal direction.
(8) The production line according to (5), wherein the collecting unit includes a conveyor belt and a reduction motor.
(9) The production line according to (5), wherein the production line further comprises a vibratory feeding unit which comprises a vibration motor and a material groove, is positioned at the downstream of the discharging end of the conveying belt of the feeding unit and at the upstream of the automatic tea impurity removing device, and is arranged to enable the material to be processed to be sent to the vibratory feeding unit from the upstream to the downstream in a continuous mode, and then to be sent to the automatic tea impurity removing device.
(10) The production line according to any one of (5) to (9), further comprising a control unit, wherein the control unit is electrically connected with respective motors of the feeding unit, the automatic tea impurity removing device, the collecting unit and the vibration feeding unit so as to control the feeding unit, the automatic tea impurity removing device, the collecting unit and the vibration feeding unit.
Compared with the prior art, the invention has the following advantages and positive effects:
the invention breaks through the traditional manual picking operation mode, designs an automatic sundries removing device for tea, skillfully combines the surfaces covered with small hooks with a rotating roller, and realizes continuous and automatic removal of soft and light hairs, woven belts and the like in the teaAnd (5) sundries. The inventors of the present invention found that only when the distribution density of the hooks was 25 to 36/cm2And when the height of the hook is 2-4mm, effective elimination can be realized.
Compared with the tea picking operation in the prior art, the invention can quickly and effectively remove soft impurities such as hair, woven belts and the like mixed in the tea, does not cause the loss of the quantity of the tea or the reduction of the quality (such as the damage of tea ropes), and can greatly reduce the picking cost.
In addition, the automatic sundries removing device for the tea is suitable for being combined with a tea production line, a product conveying belt can be butted at the upstream of the automatic sundries removing device, and sundries can be directly and continuously removed by the automatic sundries removing device without affecting the effect of the automatic sundries removing device for the tea; downstream may be connected a tea collection device to facilitate collection and further packaging of the processed product. Therefore, the equipment is suitable for industrial production.
In the automatic tea processing production line, each unit in the production line is further optimized, so that the units are better matched with each other, and the optimal sundries removing effect is realized.
On the other hand, all parts of the device and the production line which are contacted with the materials can use food-grade materials, so that the device and the production line are safe and convenient to use. In addition, the device and the production line have low cost and convenient maintenance, and are suitable for large-scale production.
Drawings
Fig. 1 shows an automatic impurity removing device for tea leaves and an automatic tea leaf processing line according to an embodiment of the present invention.
Wherein the reference numerals in fig. 1 are explained as follows:
1. a feeding unit; 2. a control cabinet; 3. a vibratory feeding unit; 4. an automatic sundries removing device for tea; 5. a belt conveyor; 11. a feeding bin; 12. an infrared probe; 13. a reduction motor; 14. a feeding unit conveyer belt; 15. a feeding port; 41. a driven roller; 42. sticking cloth with hooks; 43. a drive roll; 44. a round belt; 51. the collection unit conveys the belt.
Detailed Description
The present invention is further described in the following description of the embodiments with reference to the drawings, which are not intended to limit the invention, and those skilled in the art may make various modifications or improvements based on the basic idea of the invention, but within the scope of the invention, unless departing from the basic idea of the invention.
The inventor of the invention recognizes the technical problems in the prior art and designs a novel device for automatically removing impurities from tea leaves.
Therefore, in one aspect, the invention provides an automatic impurity removing device for tea leaves, which comprises a speed reducing motor and at least one roller capable of rotating around the axial direction of the roller, wherein the rotation of the roller is controlled by the speed reducing motor, the surface of the roller is provided with an impurity removing area, a plurality of hooks are distributed in the impurity removing area, and the distribution density of the hooks is 25-36/cm2And the height of the hook is 2-4 mm.
The term "roller" as used herein refers to the meaning commonly understood in the art, i.e., a cylindrical object rotatable about an axis passing through the center of the cross-section. The term "axis passing through the center of the cross-section" is also referred to herein as the "central axis". The term "axial direction" refers to the direction of an axis passing through the center of a cross-section. The term "rotation about an axial direction" means rotation about an axis passing through the center of the cross-section of the roll.
In the present invention, the roller is preferably of an elongated cylindrical shape, i.e. the height of the cylinder is greater than the diameter of the cross-section.
The invention breaks through the traditional manual picking operation mode, skillfully utilizes the combination of the surface covered with small hooks and the rotating roller, realizes the continuous and automatic removal of slender, light and soft sundries such as hair, woven belts and the like in tea leaves, the sundries can be wound on the roller and hooked by the hooks along with the rotation of the roller, and the clean materials can leave the device and are collected. Furthermore, the inventors of the present invention have found that the small hook is not ideal for removing the above-mentioned foreign matter in all cases, that is, the small hook cannot be set arbitrarily. HookThe size and distribution density of the impurity can influence the effect of impurity removal. Only when the distribution density of the hooks is 25-36/cm2And when the height of the hook is 2-4mm, effective elimination can be realized.
When the distribution density of hooks on the surface is out of the above range, the effect of rejection is not satisfactory. The present invention is not bound by theory, but it is presumed that when the distribution density is less than 25 pieces/cm2In the process, the contact probability of slender, light, floating and soft sundries with the hooks is small, even if the sundries are in contact with the hooks, the tightness degree of winding on a single hook is not firm, the sundries are difficult to interact with a plurality of hooks, and the sundries are difficult to be clamped between the hooks, so that the sundry removing effect is influenced; when the distribution density is higher than 36/cm2In time, not only is the cost high, but also tea leaves are easy to be clamped between the hooks, so that the tea leaf consumption is caused, and the waste and the cost increase are caused.
When the height of the hook is out of the above range, the removing effect is not ideal. The invention is not bound by theory, but it is speculated that at heights below 2mm, the effective entanglement of the graff with the hook is reduced, and the graff tends to slip more directly over the top of the hook; when the height is higher than 4mm, under the condition of a plurality of rejecting rollers, the diameter of the rollers and the distance between the long axes of the adjacent rollers are correspondingly increased, and partial tea leaves are clamped into the grooves formed by the contact of the two rollers, so that the tea leaf crushing rate is increased.
In this application, the phrase "height of the hook" refers to the overall height of the non-hooked stem and hooked head of the hook, i.e., the distance between the point of contact of the base of the hook with a surface to the apex of the top of the hook.
Preferably, the impurity removing area is distributed over the roller along the circumferential direction of the roller, and the ratio of the width of the roller to the width of the impurity removing area is (1.2-1): 1.
The term "circumferential direction" as used herein refers to the meaning generally understood in the art, i.e., in the circumferential direction of the cross-section of the roll.
In this application, the words "width of the reject zone" and "width of the roll" refer to directions along an axis passing through the center of the cross-section of the roll.
In a more preferred embodiment, the graff rejection zone is interspersed with the rollers.
Preferably, the number of rollers is more than one. In some embodiments, the debris removal device comprises 4 to 10 (e.g., 4 to 6) of the rollers arranged in parallel in the axial direction, the rollers being connected by a belt. The amount may be selected according to the content of impurities.
In the case where there are a plurality of rollers, one of the rollers (usually, the foremost roller) may be set as a drive roller, which is connected to a reduction motor so as to be rotated by the motor. The other rollers are connected with the driving roller through a belt (such as a round belt), and when the driving roller rotates, the other driven rollers are driven to rotate.
When a plurality of the rollers are present, the spacing between the central axes of adjacent rollers is preferably 50mm to 58 mm. Preferably, there are no gaps between the surfaces (including hooks) of the plurality of rolls.
The connection of the motor to the roller can be controlled in a known manner, as will be appreciated by those skilled in the art. Preferably, according to the content of the impurities in the tea leaves, the rotating speed of the roller is controlled by using a speed reducing motor, so that the impurity removing effect is better realized. Generally, it is preferred that the rotational speed of the rollers be 200-300 r/min.
In a particularly preferred embodiment, the surface of the roller is wrapped with a hook-on adhesive tape that forms the debris removal zone. The term "adhesive cloth" refers to a cloth strip or a cloth belt which is commonly used for binding or fixing in life, and comprises a part full of micro hooks and a part full of short fluffs, wherein the two parts can be tightly combined together by contacting, and can be separated by a certain force. Examples include pairs of adhesive strips used on the lappets, which can be closed by aligning and contacting the two parts. The form of the adhesive cloth is not limited to the short cloth strip used on the lappet, and also comprises long strip-shaped adhesive cloth used for fixing articles or closing the opening of the case. The expression "adhesive patch with hooks" refers to that part of the adhesive patch which carries hooks. Which can be manufactured in various desired shapes and sizes.
Preferably, the color of the impurity rejection area is selected according to the color of the impurity, so as to form color difference, thereby being beneficial to observing the condition that the impurity is intercepted on the impurity rejection area. For example, a light color, such as white, which facilitates observation of hair and woven bags thereon. The color of the hook adhesive patch is therefore also preferably selected and adjusted as such.
Preferably, all parts of the device of the invention that come into contact with the material use food grade materials.
A schematic diagram of an example of a specific sundry removing device can refer to the structures shown and described by reference numerals 4, 41, 42 and 43 in fig. 1. For example, one or more debris excluding rollers and a motor may be assembled and fixed together by conventional means using a frame.
Compared with the tea picking operation in the prior art, the invention can quickly and effectively remove soft impurities such as hair, woven belts and the like mixed in the tea, does not cause the loss of the quantity of the tea or the reduction of the quality (such as the damage of tea ropes), and can greatly reduce the picking cost.
The invention also provides an automatic tea processing production line, wherein the production line sequentially comprises a feeding unit, the automatic tea impurity removing device and a collecting unit from upstream to downstream, and the three units are arranged to enable materials to be processed to be sent to the automatic tea impurity removing device from the feeding unit and then to be sent to the collecting unit from upstream to downstream in a continuous mode.
The term "from upstream to downstream" as used herein in reference to a production line refers to the direction of conveyance of material. In contrast, "upstream" refers to a location through which material passes first, and "downstream" refers to a location through which material passes later. Therefore, the materials are conveyed to the sundry removing device from the feeding unit and then conveyed to the collecting unit. This process achieves continuous transport of the material by suitably arranging the positions of the units or devices. That is, the material is loaded to the feeding unit, is sent to the sundries removing device through the feeding unit, passes through the device and is collected by the collecting unit, and the time interval is not interrupted.
In some preferred embodiments, the feeding unit comprises a conveyor belt, a speed reducing motor, and a vertically movable material thickness control mechanism, wherein the movement of the feeding conveyor belt is controlled by the speed reducing motor and comprises a feeding end and a discharging end in sequence from upstream to downstream, and the vertically movable material thickness control mechanism is arranged above the discharging end.
Preferably, the discharging end of the feeding conveyer belt is higher than the feeding end so that the included angle between the feeding conveyer belt and the horizontal direction is 10-19 degrees. The closer the conveyor belt is to horizontal, the longer the length of the apparatus for the same conveying distance. When the included angle is smaller than 10 degrees, the conveying belt and the feeding equipment are too long. When the included angle is larger than 19 degrees, the materials are easy to slide and gather at the feeding end due to over inclination.
Preferably, the surface of the feeding conveyor belt has a raised pattern. Thus, the friction between the materials and the belt is increased, and the materials are more conveniently conveyed. The pattern on the surface of the conveyor belt may take various forms without limitation, such as a granular pattern, a spike pattern, or the like, and may be uniformly or non-uniformly arranged.
The connection of the motor to the conveyor belt can be controlled in a known manner, as will be appreciated by those skilled in the art. Preferably, the speed reduction motor is used for controlling the transmission speed of the conveying belt, so that the flow of the raw tea conveyed to the impurity removing device is controlled according to the impurity content of the tea leaves, and the impurity removing effect is better achieved. Generally, it is preferable that the conveying speed of the conveyor belt is 0.2 to 0.5 m/s.
The vertically movable material thickness control mechanism is arranged at the discharge end of the conveying belt and used for controlling the thickness of the material through blocking of the vertically movable material thickness control mechanism (such as the lower edge of the vertically movable material thickness control mechanism) on the material, so that the amount of the raw tea conveyed to the impurity removing device is adjusted according to the impurity content of the tea, and therefore the impurity removing effect is better achieved. Generally, it is preferable to control the thickness of the tea leaves not to exceed 1 cm.
The term "vertically movable" means that the material thickness control mechanism is movable in a vertical direction. Therefore, the blocking degree of the mechanism to the material can be adjusted by adjusting the height of the mechanism in the vertical direction, so that the thickness of the material is controlled. For example, when a given thickness of material is desired, the mechanism is adjusted to a corresponding height through which unobstructed material can pass to achieve the desired thickness.
Examples of material thickness control mechanisms include rake rolls, baffles, and the like.
Preferably, an infrared probe is arranged at the feeding end of the conveying belt and can sense the existence of the materials, and when the material conveying is finished, the automatic stop of the feeding conveying belt or the whole line can be realized through a control system.
A schematic diagram of an example of a particular feed unit is shown and described with reference to reference numeral 1, and other related reference numerals in fig. 1, wherein the vertically movable material thickness control mechanism is not shown. For example, the various parts of the feeding unit may be assembled and fixed together by conventional means using a frame.
In some embodiments, the feeding unit and the debris removal device are positioned such that the discharge end of the feeding unit is inclined upwardly above the rollers of the debris removal device (i.e., the debris removal rollers), passes through the material thickness control mechanism, and then falls onto the rollers of the debris removal device as material is conveyed to the discharge end at a speed.
The collecting unit may be any suitable device that cooperates with the debris rejecting roller as long as it is capable of collecting material passing over the roller. Such as a box, a conveyor belt, etc. that cooperates with the debris extraction roller.
Preferably, the collecting unit includes a conveyor belt and a reduction motor.
In some embodiments, the conveyor belt of the collecting unit is located below the rollers of the debris removal device, onto which clean material passing through the debris removal device falls to be transported away. Preferably, the length of the conveyor belt is 2m to 3 m.
The color of the collecting unit conveyor belt is preferably selected according to the color of the impurities in order to create a color difference. For example, when the sundries to be removed are hair and dark woven bags, the color of the conveying belt is preferably light color, such as grey white or white, so that the sundries removal condition can be checked manually.
The connection of the motor to the conveyor belt can be controlled in a known manner, as will be appreciated by those skilled in the art. Preferably, a speed reducing motor is utilized to control the conveying speed of the collecting unit conveying belt in a proper range, so that the impurity rejection condition can be conveniently and manually checked. Preferably, the transport speed of the collecting unit conveyor belt is controlled to be 0.2-0.5 m/s.
In some embodiments, 2 people each on either side of the collection unit conveyor belt were tested for hair, webbing, and other non-tea inclusions.
A schematic diagram of an example of a particular collection unit can be seen and described with reference to reference numerals 5 and 51 in fig. 1, wherein the motor is not shown. For example, the various parts of the collection unit may be assembled and secured together by conventional means using a frame.
In the case of manually inspecting the effect of removing the foreign matter, it is preferable to set the width of the conveyor belt to a width that is easy for manual inspection and sufficient for taking the foreign matter, for example, to a width that can be easily reached by an adult. Of course, the width of the foreign matter can be set strictly in such a case.
When the width of the conveying belt is set to be relatively narrow for facilitating manual inspection and sufficient taking, the width of the sundries removing roller can be set to be the same as that of the sundries removing roller, so that the sundries can fall onto the conveying belt completely. In other embodiments, the width of the debris removal roller may be maintained as appropriate so as not to affect the debris removal efficiency. In this way, a funnel is preferably provided below the graff removal roller to allow the material to fall completely onto the collecting conveyor.
In general, it is preferable to maintain a proper width of the feeding conveyor belt in order not to affect the feeding efficiency. When the width of the sundries removing roller is set to be narrower as the collecting conveyer belt, a funnel is preferably arranged at the discharge end of the feeding conveyer belt, so that the materials completely fall onto the sundries removing roller.
In some preferred embodiments, the production line further comprises a vibratory feed unit comprising a vibratory motor and a material chute, and which is located downstream of the discharge end of the feed conveyor belt and upstream of the automatic tea leaf impurity removal device, and is arranged such that material to be processed is fed from the feed unit to the vibratory feed unit and then to the automatic tea leaf impurity removal device in a continuous manner from upstream to downstream.
In some embodiments, the vibration feeding unit, the feeding unit and the sundries removing roller are positioned in a manner that a material groove of the vibration feeding unit is positioned below the discharge end of the feeding conveying belt so as to receive conveyed materials; and the material groove is positioned at the upstream of the impurity removing roller and is higher than the impurity removing roller, so that the material is thrown on the material groove through vibration. One specific example is shown in fig. 1.
The vibration motor of the vibration feeding unit is arranged to vertically vibrate the material tank, and the material tank may be set to be inclined at a certain angle, so that the material may be uniformly spread thereon by the cooperation of the vibration and the inclination and thrown onto the sundries removing roller. In some embodiments, the inventors have found that the bin can be horizontal and can swing back and forth as the bin is vibrated, which also spreads the material evenly and is thrown onto the debris removal roller. Therefore, in the case that the width of the impurity removing roller and the width of the collecting conveyer belt are smaller than the width of the feeding conveyer belt, the vibration feeding unit is preferably arranged, so that materials gathered by the hopper can be uniformly distributed and then thrown onto the impurity removing roller.
The vibration frequency of the vibration feeding unit is controlled by the vibration motor, and the vibration frequency of the motor can be adjusted according to the characteristics of the raw tea, the impurity content and the distribution and aggregation conditions, so that the raw tea is distributed more uniformly. Generally, it is preferable that the vibration frequency is 20 to 40 Hz.
A schematic view of an example of a specific vibratory feed unit is shown and described with reference to reference numeral 3 in fig. 1, wherein the vibratory motor is not shown. For example, the various parts of the vibratory feed unit may be assembled and secured together by conventional means using a frame.
Preferably, the production line further comprises a control unit, and the control unit is electrically connected with respective motors of the feeding unit, the automatic tea impurity removing device, the collecting unit and the vibration feeding unit so as to control the feeding unit, the automatic tea impurity removing device, the collecting unit and the vibration feeding unit. The configuration of the control unit and its connection to other units or mechanisms of the invention may take those commonly used in the art. For example, the control unit is an electric control cabinet which can be positioned on the outer side of one side wall of the feeding unit, so that the start and stop of each unit or mechanism can be controlled by manual operation, and the frequency of the conveyor belt motor and the vibration motor can be adjusted. The configuration of the electric cabinet is known in the art and may, for example, have a display screen and buttons thereon to enable manipulation.
It will be understood by those skilled in the art that the materials used for the various elements, devices, mechanisms and parts of the manufacturing line according to the invention may be those conventionally used, unless otherwise specified.
Preferably, the food-grade material is adopted in the part of the whole production line which is in direct contact with the material.
The structure of the automatic tea processing production line according to one embodiment of the invention is shown in fig. 1, and comprises a feeding unit, a vibration feeding unit, a sundries removing device, a collecting unit and a control cabinet, which form the automatic tea processing production line.
The invention also provides application of the automatic impurity removing device for tea in tea production and processing. The invention also provides application of the automatic tea processing production line in tea production and processing.
Examples
The automatic tea processing production line comprises a feeding unit, a vibration feeding unit, a sundries removing device, a collecting unit and a control cabinet, wherein the structures and the position relations of all the units and the devices are shown in figure 1. Specifically, the feeding unit is inclined upwards, and the discharging end of the conveying belt of the feeding unit is higher than the feeding end, so that the included angle between the feeding conveying belt and the horizontal direction is 10-19 degrees. The discharge end of the conveying belt is provided with a rake roller, and the feed opening of the feeding unit is positioned above the material groove of the vibration feeding unit. The material groove is positioned at the upstream of the sundries removing roller and is higher than the roller. The sundry removing device is provided with 4-10 sundry removing rollers, and the distance between the sundry removing rollers and the sundry removing rollers is 50-58 mm. The driving roller 43 is connected with a motor, which drives the driven roller to rotate through a circular belt. The surface of the sundries removing roller is wrapped with adhesive cloth with hooks, and the hooks are distributed on the surface of the whole roller. The collecting conveyer belt is arranged below the sundries removing roller.
The technological process for removing the impurities from the tea leaves by adopting the production line mainly comprises the following steps:
firstly, an operator pours the raw tea into a feeding machine, and sequentially starts a conveying belt of a collecting unit, a sundries removing roller, a vibration feeding unit and a feeding unit. And observing the condition of the material falling vibration feeding unit, and adjusting the height of a rake roller of the feeding unit and the speed of a feeding conveyer belt according to the material flow, the impurity content and the raw material thickness. Secondly, the number of the sundries removing rollers is properly increased or reduced according to the sundries winding condition, the reasonable distance and the rotating speed of the sundries removing rollers are adjusted, and meanwhile, the speed of the collecting unit conveying belt is properly adjusted according to the falling thickness of the materials on the collecting unit belt conveyor, so that manual inspection is facilitated, and other non-tea impurities are picked. When the raw material selection is finished, the power supplies of the feeding unit, the vibration feeding unit, the sundries removing roller and the collecting unit conveying belt are sequentially closed, and the light sundries such as hair, woven belts and the like on the sundries removing roller are cleaned.
Example 1
An automatic tea processing production line is shown in figure 1, wherein the included angle between the feeding conveyer belt and the horizontal direction is 12 degrees, the speed of the feeding conveyer belt is 0.5m/s, the speed of the collecting unit conveyer belt is 0.5m/s, the number of the sundries removing rollers is 4, the distance is 51.5cm, the rotating speed is 250 r/min, the surface of the roller is wrapped with adhesive cloth, and the distribution density of hooks on the adhesive cloth is 25/cm2The height of the hook is 2.5mm, and the ratio of the width of the impurity removing area to the width of the roller is 1: 1. The production line is utilized to remove the sundries in the Pu' er green-sun raw tea.
Two workers check the removing effect of soft and light sundries such as hair, woven bags and the like beside the collecting conveyer belt, a sampling mode is adopted, and if more than 3 sundries exist in 30kg of raw materials, the sundries need to be picked again. The examination result is as follows: the content of impurities in 30kg of raw materials is 1, and the result meets the standard.
Example 2
Automatic tea processingThe production line is shown in figure 1, and the distribution density of the hooks of the adhesive cloth is 25/cm2The height of the hook was 3.5mm, and other parameters were the same as in example 1.
The production line is utilized to remove the sundries in the Pu' er green-sun raw tea.
Two workers check the removing effect of soft and light sundries such as hair, woven bags and the like beside the collecting conveyer belt, a sampling mode is adopted, and if more than 3 sundries exist in 30kg of raw materials, the sundries need to be picked again. The examination result is as follows: the content of impurities in 30kg of raw materials is 2, and the result meets the standard.
Example 3
As shown in figure 1, the distribution density of hooks of adhesive cloth is 36/cm2The height of the hook was 3.5mm, and other parameters were the same as in example 1.
The production line is utilized to remove the sundries in the Pu' er green-sun raw tea.
Two workers check the removing effect of soft and light sundries such as hair, woven bags and the like beside the collecting conveyer belt, a sampling mode is adopted, and if more than 3 sundries exist in 30kg of raw materials, the sundries need to be picked again. The examination result is as follows: the impurity content in 30kg of raw materials is 3, and the result meets the standard.
Comparative example 1
As shown in fig. 1, the surface of the impurity removing roller is not wrapped with the adhesive cloth, i.e., has no hooks, and other parameters are the same as those in example 1.
The production line is utilized to remove the sundries in the Pu' er green-sun raw tea.
Two workers check the removing effect of soft and light sundries such as hair, woven bags and the like beside the collecting conveyer belt, a sampling mode is adopted, and if more than 3 sundries exist in 30kg of raw materials, the sundries need to be picked again. The examination result is as follows: the impurity content in 30kg of raw materials is 8, and the result does not accord with the standard.
Comparative example 2
As shown in figure 1, the surface of the sundries removing roller is not wrapped with adhesive cloth, but is wrapped with steel wire with hooks, wherein the distribution density of the hooks is 49/cm2Said hook having a height of 15mm, other parameters are the same as in example 1.
The production line is utilized to remove the sundries in the Pu' er green-sun raw tea.
Two workers check the removing effect of soft and light sundries such as hair, woven bags and the like beside the collecting conveyer belt, a sampling mode is adopted, and if more than 3 sundries exist in 30kg of raw materials, the sundries need to be picked again. The examination result is as follows: the impurity content in 30kg of raw materials is 6, and the result does not meet the standard.
Claims (10)
1. An automatic impurity removing device for tea leaves is characterized by comprising a speed reducing motor and at least one roller capable of rotating around the axial direction of the roller, wherein the rotation of the roller is controlled by the speed reducing motor, an impurity removing area is arranged on the surface of the roller, a plurality of hooks are distributed on the impurity removing area, and the distribution density of the hooks is 25-36/cm2And the height of the hook is 2-4 mm.
2. The automatic impurity removing device for tea leaves as claimed in claim 1, wherein the impurity removing area is distributed over the roller in the circumferential direction of the roller, and the ratio of the width of the roller to the width of the impurity removing area is (1.2-1): 1.
3. An automatic impurity removing device for tea leaves as claimed in claim 1, wherein said device comprises 4 to 10 of said rollers arranged in parallel in the axial direction, said rollers are connected by a belt, and the distance between the central axes of adjacent rollers is 50mm to 58 mm.
4. The automatic impurity removing device for tea leaves as claimed in claim 1, wherein the surface of the roller is wrapped with adhesive cloth with hooks, and the adhesive cloth with hooks forms the impurity removing area.
5. An automatic tea processing line, characterized in that the line comprises a feeding unit, an automatic impurity removing device for tea leaves as claimed in any one of claims 1 to 4 and a collecting unit in sequence from upstream to downstream, the three being arranged so that the material to be processed is sent from the feeding unit to the automatic impurity removing device for tea leaves and then sent to the collecting unit in a continuous manner from upstream to downstream.
6. The production line as claimed in claim 5, wherein the feeding unit comprises a conveyor belt, a speed reduction motor, and a vertically movable material thickness control mechanism, wherein the conveyor belt is controlled by the speed reduction motor and comprises a feeding end and a discharging end in sequence from upstream to downstream, and the vertically movable material thickness control mechanism is arranged above the discharging end.
7. A production line as claimed in claim 6, in which the discharge end of the conveyor belt is higher than the feed end so that the conveyor belt is at an angle of 10 to 19 degrees to the horizontal.
8. The production line as claimed in claim 5, wherein said collection unit comprises a conveyor belt and a reduction motor.
9. A production line as claimed in claim 6 further comprising a vibratory feed unit including a vibratory motor and a material chute and located downstream of the discharge end of the feed unit conveyor belt and upstream of the automatic tea leaf impurity removal means and arranged such that material to be processed is fed from upstream to downstream in a continuous manner from the feed unit to the vibratory feed unit and then to the automatic tea leaf impurity removal means.
10. The production line of any one of claims 5 to 9, further comprising a control unit electrically connected to respective motors of the feeding unit, the automatic tea leaf impurity removing device, the collecting unit and the vibratory feeding unit so as to control the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020746532.0U CN212944092U (en) | 2020-05-08 | 2020-05-08 | Automatic debris removing devices of tealeaves and automatic processing production line of tealeaves |
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| CN202020746532.0U CN212944092U (en) | 2020-05-08 | 2020-05-08 | Automatic debris removing devices of tealeaves and automatic processing production line of tealeaves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457986A (en) * | 2021-07-05 | 2021-10-01 | 安徽精一茶业有限公司 | Melon piece production is with choosing piece auxiliary device |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113457986A (en) * | 2021-07-05 | 2021-10-01 | 安徽精一茶业有限公司 | Melon piece production is with choosing piece auxiliary device |
| CN113457986B (en) * | 2021-07-05 | 2022-07-01 | 安徽精一茶业有限公司 | Melon piece production is with choosing piece auxiliary device |
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