A screening and air separation process for tea processing

Abstract

The invention discloses a screening and air selection process for tea processing, the screening and air selection process comprises an air selector; a drop bucket, an inclined filtering slope, a blower, a filtering mechanism, and a collecting and conveying device in the air selector, the inclined filtering slope is arranged in an inclined shape, and the drop bucket and the blower are respectively arranged on the upper and lower sides of the inclined filtering slope, the filtering mechanism is also located above the inclined filtering slope, the port of the blower is arranged toward the filtering mechanism, and the collecting and conveying device is respectively arranged on the left and right sides below the filtering mechanism. The invention can load tea leaves of different sizes into different containers for transmission during the air selection process, and discharge dust, tea stems, tea powder and other debris residues mixed in the tea leaves during the transmission process, and utilize continuous heating to dry the tea leaves passing through the warehouse body to form an integrated operation, thereby reducing the rework procedure of the tea leaves and the number of inspections by staff.

Description

Technical Field

[0001] The invention relates to the field of tea wind selection technology, and specifically to a screening wind selection technology for tea processing. Background Art

[0002] When making tea, it has to go through the processes of withering, initial kneading, pile fermentation, re-kneading and drying. During the processing, sand, dust, old and rotten leaves and other impurities in the tea should be screened out. At present, tea winnowing machines are mostly used for winnowing. The existing winnowing machines include a winnowing machine box and a hair dryer arranged in the box. A feed inlet is provided on the top plate of the box, and a plurality of discharge ports arranged in sequence are provided on the bottom plate. When working, the tea leaves fall vertically from the feed inlet, and the fan blows air at the tea leaves steadily, blowing tea leaves and impurities of different specific gravities into the corresponding discharge ports; but the tea leaves still need to be dried after being screened by the winnowing machine, resulting in the need to process the tea leaves through multiple devices, and when the tea leaves are poured into the winnowing machine, the tea leaves cannot pass through the winnowing machine evenly and be screened by the winnowing machine, and in the process of removing the screened tea leaves, the winnowing machine cannot remove the remaining impurities that have not been screened out. Summary of the invention

[0003] The invention provides a screening and air separation process for tea processing, which overcomes the shortcomings described in the background technology.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A screening and air selection process for tea processing, the screening and air selection process comprises an air selection machine; a drop bucket, an oblique filtering slope, a blower, a filtering mechanism, and a collecting and conveying device in the air selection machine, the oblique filtering slope is arranged in an inclined shape, and the drop bucket and the blower are respectively arranged on the upper and lower sides of the oblique filtering slope, the filtering mechanism is also located above the oblique filtering slope, the port of the blower is arranged toward the filtering mechanism, and the collecting and conveying device is respectively arranged on the left and right sides below the filtering mechanism, a thinning roller is arranged between the drop bucket and the oblique filtering slope, a plurality of shifting rods are arranged on the circumference of the thinning roller, and every two adjacent shifting rods are arranged staggered, and the shifting rods are against the surface of the oblique filtering slope;

[0006] The collecting and conveying device comprises a flattening mechanism and a conveying belt. The flattening mechanism is placed inside the conveying belt and abuts against the inner surface of the conveying belt.

[0007] The screening and air separation process comprises the following specific steps:

[0008] S1: Pour the tea leaves into the drop bucket and control the falling speed of the tea leaves through the drop bucket until the tea leaves fall onto the surface of the inclined filtering slope;

[0009] S2: The thickness of the fallen tea leaves is thinned by a thinning roller, and the tea leaves are allowed to slide evenly from the surface of the inclined filtering slope. During the sliding process, a blower is used to blow air toward the tea leaves, so that the lighter dust, tea residue, etc. are lifted up and fall to the surface of the filtering mechanism;

[0010] S3: screening and collecting tea leaves of different weights and sizes through a collecting conveyor, and heating the tea leaves during the collection process;

[0011] S4: using a conveyor belt to transport the tea leaves that have fallen into the collecting and conveying device outward, and during the transportation process, a flattening mechanism is used to create vibrations so that the tea leaves on the surface of the conveyor belt are gradually flattened;

[0012] S5: The staff collects the tea leaves conveyed by the conveyor belt, mixes them and pours them into the drop bucket, and repeats step SS until the tea leaves are dried.

[0013] A preferred technical solution: the filter mechanism is arranged in a downwardly inclined state in the air separator, and the lower middle part of the filter mechanism has a bending portion, the bending portion is arranged upwardly inclined, and a filter cavity is provided in the bending portion, and the filter cavity extends to the left and right ends of the filter mechanism respectively.

[0014] A preferred technical solution: the right surface of the middle part of the filter chamber is a downward curved surface, and a connecting chamber is provided near the curved surface of the filter chamber, and the connecting chamber is externally connected to the air compressor through a connecting piece;

[0015] A filter screen is provided at the connection end of the communicating cavity and the filtering cavity.

[0016] A better technical solution: an opening adjustment rod and a bracket are provided in the drop bucket, and the opening adjustment rod is movably mounted on the bracket, the opening adjustment rod includes a movable rod and a shift block, the shift block is installed at the lower end of the movable rod, and the surrounding surface of the movable rod is provided with a slide groove, and the bracket is provided with a corresponding block, so that when the opening adjustment rod is adjusted up and down, the opening adjustment rod can be rotated through the guidance of the slide groove.

[0017] A preferred technical solution: the flattening mechanism includes a second vibration motor and a vibration conduction sheet, the middle portion of the vibration conduction sheet is connected to the output shaft, and the lower end of the vibration conduction sheet is symmetrically provided with a plurality of balance support bars on the left and right sides, and the lower end of the balance support bar is against the surface of the second vibration motor through a ball bearing;

[0018] The cross section of the vibration conduction sheet is in an inverted V shape. The vibration conduction sheet is placed in the middle of the conveyor belt, and the vibration conduction sheet is parallel to the side surface of the conveyor belt.

[0019] A preferred technical solution: Screening areas and raised portions are symmetrically provided at both side edges of the conveyor belt, the raised portions are located outside the screening areas, and the raised portions protrude from the surface of the conveyor belt.

[0020] Compared with the background technology, this technical solution has the following advantages:

[0021] The present invention can load tea leaves of different sizes into different bins for transmission during the air selection process, and discharge dust, tea stems, tea powder and other debris residues mixed in the tea leaves during the transmission process, and utilizes continuous heating to dry the tea leaves that have passed through the bin, forming an integrated operation, reducing the rework procedure of the tea leaves and the number of inspections by staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 Schematic diagram of the opening adjustment rod 11.

[0025] Figure 3 It is a schematic diagram of the filtering mechanism 4.

[0026] Figure 4 It is a half-section schematic diagram of the filtering mechanism 4.

[0027] Figure 5 This is a schematic diagram for collecting and transferring equipment to 5.

[0028] Figure 6 Schematic diagram of the flattening mechanism 51.

[0029] Figure 7 FIG. 5 is a schematic diagram of the vibration conducting sheet 512 .

[0030] Figure 8 is a schematic diagram of the conveyor belt 52.

[0031] In the figure: a drop bucket 1, an opening adjustment rod 11, a movable rod 111, a shift block 112, a slide 113, an oblique filtering slope 2, a thinning roller 21, a first vibration motor 22, a blower 3, a filtering mechanism 4, a filtering chamber 41, a connecting piece 42, a collecting and conveying device 5, a flattening mechanism 51, a second vibration motor 511, a vibration conduction sheet 512, a balance support bar 5121, a conveyor belt 52, a screening area 521, a raised portion 522, a hot air blower 6, a hot air connecting pipe 61, and an air compressor 7. DETAILED DESCRIPTION

[0032] like Figure 1-8As shown, a screening and air selection process for tea processing, the screening and air selection process includes an air selection machine; the air selection machine includes a drop bucket 1, an oblique filtering slope 2, a blower 3, a filtering mechanism 4, a collecting and conveying device 5, a hot air blower 6, and an air compressor 7. The oblique filtering slope 2 is arranged in an inclined shape, and the drop bucket 1 and the blower 3 are respectively arranged on the upper and lower sides of the oblique filtering slope 2, and the filtering mechanism 4 is also located above the oblique filtering slope 2. The port of the blower 3 is arranged toward the filtering mechanism 4, and the collecting and conveying device 5 is respectively arranged on the left and right sides below the filtering mechanism 4, and the drop bucket 1 and the oblique filtering slope are arranged on the left and right sides below the filtering mechanism 4. 2, a thinning roller 21 is provided between the thinning roller 21, and a plurality of levers are provided on the circumference of the thinning roller 21, and every two adjacent levers are staggered, and the levers are against the surface of the oblique filtering slope 2. As shown in the figure, a first vibration motor 22 is provided at the lower right part of the oblique filtering slope 2. When the tea leaves slide down the surface of the oblique filtering slope 2, they can gradually slide down by utilizing the vibration effect provided by the first vibration motor 22. Since the surface of the oblique filtering slope 2 has a plurality of filter sheets, and the filtering diameter of each filter sheet is different, and the filtering diameter gradually increases from the high point on the left side of the oblique filtering slope 2 to the low point on the right side, the tea leaves with small mass and volume fall into the collecting and conveying device 5 near the left side of the oblique filtering slope 2, and the tea leaves with large mass and volume fall into the collecting and conveying device 5 near the right side of the oblique filtering slope 2 to form classification, and the filtering mechanism 4 creates negative pressure through the air compressor 7 to adsorb and filter the relatively fine debris such as tea powder and dust blown by the blower 3 during the screening process of the tea leaves.

[0033] Furthermore, the collecting and conveying device 5 includes a flattening mechanism 51 and a conveyor belt 52. The flattening mechanism 51 is placed inside the conveyor belt 52 and abuts against the inner surface of the conveyor belt 52. Figure 7As shown, the flattening mechanism 51 includes a second vibration motor 511 and a vibration conducting sheet 512, the middle part of the vibration conducting sheet 512 is connected to the output shaft of 5111, and the left and right sides of the lower end of the vibration conducting sheet 512 are symmetrically provided with a plurality of balance support bars 5121, and the lower end of the balance support bar 5121 is against the surface of the second vibration motor 511 through a ball bearing, the cross section of the vibration conducting sheet 512 is inverted V shape, the vibration conducting sheet 512 is placed in the middle of the conveyor belt 52, and the vibration conducting sheet 512 is parallel to the side of the conveyor belt 52, and the advantage of such a setting is that when the conveyor belt 52 is used to catch and convey the tea leaves that have fallen into the conveyor belt 52, the conveyor belt 52 can be used to collect and convey the tea leaves. Through the vibration effect generated by the second vibration motor 511, the tea leaves placed on the surface of the conveyor belt 52 are gradually moved to both sides with the vibration, so as to avoid the tea leaves being accumulated only in the middle of the conveyor belt 52 and not affecting the conveying effect of the conveyor belt 52. Since the edges of both sides of the conveyor belt 52 are symmetrically provided with screening areas 521 and raised parts 522, the raised parts 522 are located outside the screening areas 521, and the raised parts 522 protrude from the surface of the conveyor belt 52. Therefore, when the tea leaves on the conveyor belt 52 move to both sides with the vibration of the second vibration motor 511, the screening area 521 will filter out impurities such as debris, stones, tea stem segments, etc. mixed in the tea leaves, thereby reducing the number of rework times of the tea leaves.

[0034] Based on the above content, the screening and air separation process includes the following specific steps:

[0035] S1: pouring tea leaves into the drop bucket 1, and controlling the falling speed of the tea leaves through the drop bucket 1, until the tea leaves fall onto the surface of the oblique filtering slope 2;

[0036] S2: The thickness of the fallen tea leaves is thinned by the thinning roller 21, and the tea leaves are allowed to slide evenly from the surface of the oblique filtering slope 2. During the sliding process, the blower 3 blows air toward the tea leaves, so that the light dust, tea residue, etc. are lifted up and fall to the surface of the filtering mechanism 4;

[0037] S3: screening and collecting tea leaves of different weights and sizes through a collection conveyor, and heating the tea leaves during the collection process;

[0038] S4: The tea leaves falling into the collecting and conveying device 5 are conveyed outward by the conveyor belt 52, and during the conveying process, the tea leaves on the surface of the conveyor belt 52 are gradually flattened by the flattening mechanism 51 to generate vibration;

[0039] S5: The staff collects the tea leaves conveyed by the conveyor belt 52, mixes them and pours them into the drop bucket 1, and repeats steps S1-S4 until the tea leaves are dried.

[0040] Furthermore, in step S2, air is blown toward the tea leaves on the surface of the oblique filtering slope 2 by the blower 3, and the air flow speed at the output end of the blower 3 is 3m~5m per second, and the main purpose of this step is to blow lighter tea stems, tea leaves, dust and debris to the surface of the filtering mechanism 4, and use the filtering mechanism 4 to adsorb and filter the tea stems, tea leaves, etc., and as shown in the figure, in order to more effectively adsorb the above-mentioned debris, the filtering mechanism 4 in the present invention is arranged in a downwardly inclined shape in the air separator, and the middle and lower part of the filtering mechanism 4 has a bent portion, which is arranged to be inclined upward, and a filtering cavity 41 is provided in the bent portion, and the filtering cavity 41 is provided in the filtering cavity. The cavity 41 extends to the left and right ends of the filter mechanism 4 respectively. After being arranged in this way, when the debris is blown to the surface of the filter mechanism 4 by the blower 3, it falls along the filter cavity 41, and the surface of the middle right part of the filter cavity 41 is a downward curved surface, and a connecting cavity is provided near the curved surface of the filter cavity 41, and a filter screen is provided at the connecting end of the connecting cavity and the filter cavity 41, and the connecting cavity is connected to the air compressor 7 through a connecting piece 42, and the air compressor 7 is used to create negative pressure, so that the air flow moves toward the air compressor 7, and relatively fine powder, dust, etc. are sucked away through the filter screen, and the surface of tea stems, tea powder, etc. falls outward along the right end outlet of the filter cavity 41, and as shown in FIG. Figure 1 As shown, the right end outlet of the filter chamber 41 is above the collecting and conveying device 5 located on the right side, so the lighter tea leaves discharged along the filter chamber 41 will be discharged into the collecting and conveying device 5, and this part of the tea leaves and tea leaves are of relatively small quality, which do not meet the standards before drying, not to mention the tea leaves whose quality decreases after drying and dehydration, so this part of the tea leaves can effectively reduce the number of rework times of the operator after being screened;

[0041] And based on the above step S5 and Figure 5 As shown, the collecting and conveying device 5 also includes a warehouse body, the interior of which gradually deepens from both sides to the middle, and the conveyor belt 52 is connected to the lower end of the warehouse body, and a hot air connecting pipe 61 is also provided on the inner edge of the warehouse body. The surface of the hot air connecting pipe 61 has multiple air outlets, and the purpose of setting the hot air connecting pipe 61 is to form high-temperature gas through the hot air blower 6, and let the high-temperature gas continue to dry the tea leaves passing through the warehouse body, so that the tea leaves are gradually dehydrated, thereby eliminating the need for the operator to perform another procedure for drying the tea leaves later.

[0042] Furthermore, the drop bucket 1 is provided with an opening adjustment rod 11 and a bracket, and the opening adjustment rod 11 is movably mounted on the bracket, and the opening adjustment rod 11 includes a movable rod 111 and a shift block 112, the shift block 112 is installed at the lower end of the movable rod 111, and the surrounding surface of the movable rod 111 is provided with a slide groove 113, and the bracket has a corresponding block, so that when the opening adjustment rod 11 is adjusted up and down, the opening adjustment rod 11 can be rotated through the guidance of the slide groove 113. This arrangement is to allow the lower end outlet of the drop bucket 1 to be changed by moving the opening adjustment rod 11 up and down, thereby avoiding piles of tea leaves from accumulating at the lower part of the drop bucket 1 and being unable to be discharged.

[0043] A preferred technical solution: The above is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still be within the scope of the present invention.

Claims

1. A screening and air separation process for tea processing, characterized in that: The screening and air separation process includes an air separator; The winnowing machine comprises a drop bucket (1), an oblique filtering slope (2), a blower (3), a filtering mechanism (4), and a collecting and conveying device (5); the oblique filtering slope (2) is arranged in an inclined shape, and the drop bucket (1) and the blower (3) are respectively arranged on the upper and lower sides of the oblique filtering slope (2); the filtering mechanism (4) is also located above the oblique filtering slope (2); the port of the blower (3) is arranged toward the filtering mechanism (4); and the collecting and conveying device (5) is respectively arranged on the left and right sides below the filtering mechanism (4); a thinning roller (21) is arranged between the drop bucket (1) and the oblique filtering slope (2); a plurality of shifting rods are arranged on the circumference of the thinning roller (21); and every two adjacent shifting rods are arranged staggered, and the shifting rods abut against the surface of the oblique filtering slope (2); The collecting and conveying device (5) comprises a flattening mechanism (51) and a conveyor belt (52); the flattening mechanism (51) is disposed inside the conveyor belt (52) and abuts against the inner surface of the conveyor belt (52); The screening and air separation process comprises the following specific steps: S1: pouring tea leaves into the drop bucket (1), and controlling the falling speed of the tea leaves through the drop bucket (1) until the tea leaves fall onto the surface of the inclined filtering slope (2); S2: The thickness of the fallen tea leaves is thinned by a thinning roller (21), and the tea leaves are allowed to slide evenly from the surface of the inclined filtering slope (2). During the sliding process, air is blown toward the tea leaves by a blower (3), so that the light dust and tea residue are lifted upward and fall onto the surface of the filtering mechanism (4); S3: screening and collecting tea leaves of different weights and sizes through a collecting and conveying device (5), and heating the tea leaves during the collection process; S4: using the conveyor belt (52) to transport the tea leaves that have fallen into the collecting and conveying device (5) outward, and during the transportation process, using the flattening mechanism (51) to create vibrations so that the tea leaves on the surface of the conveyor belt (52) are gradually flattened; S5: The staff collects the tea leaves conveyed by the conveyor belt (52), mixes them and pours them into the drop bucket (1), and repeats steps S1-S4 until the tea leaves are dried; The filter mechanism (4) is arranged in a downwardly inclined state in the air separator, and the middle and lower part of the filter mechanism (4) has a bent portion, which is arranged upwardly inclined, and a filter cavity (41) is arranged in the bent portion, and the filter cavity (41) extends to the left and right ends of the filter mechanism (4) respectively.

2. The screening and winnowing process for tea processing according to claim 1, characterized in that: The right surface of the middle part of the filter chamber (41) is a downward curved surface, and a connecting chamber is provided near the curved surface of the filter chamber (41), and the connecting chamber is externally connected to the air compressor (7) via a connecting piece (42); A filter screen is provided at the connection end between the communication cavity and the filter cavity (41).

3. The screening and winnowing process for tea processing according to claim 2, characterized in that: An opening adjustment rod (11) and a bracket are provided in the drop bucket (1), and the opening adjustment rod (11) is movably mounted on the bracket. The opening adjustment rod (11) comprises a movable rod (111) and a shifting block (112). The shifting block (112) is mounted on the lower end of the movable rod (111), and a sliding groove (113) is provided on the circumference of the movable rod (111). The bracket is provided with a corresponding block so that when the opening adjustment rod (11) is adjusted up and down, the opening adjustment rod (11) can be rotated through the guidance of the sliding groove (113).

4. A screening and air separation process for tea processing according to any one of claims 1 to 3, characterized in that: The flattening mechanism (51) comprises a second vibration motor (511) and a vibration conducting plate (512), wherein the middle portion of the vibration conducting plate (512) is connected to the output shaft of the second vibration motor (511), and a plurality of balancing support bars (5121) are symmetrically arranged on the left and right sides of the lower end of the vibration conducting plate (512), and the lower end of the balancing support bar (5121) abuts against the surface of the second vibration motor (511) via a ball bearing; The cross section of the vibration conduction sheet (512) is in an inverted V shape; the vibration conduction sheet (512) is placed in the middle of the conveyor belt (52); and the vibration conduction sheet (512) is parallel to the side surface of the conveyor belt (52).

5. The screening and winnowing process for tea processing according to claim 4, characterized in that: Screening areas (521) and raised portions (522) are symmetrically provided at the edges of both sides of the conveyor belt (52), the raised portions (522) being located outside the screening areas (521), and the raised portions (522) protrude from the surface of the conveyor belt (52).

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