Four-stage winnowing equipment for screening natural raw tea

Abstract

The utility model belongs to the technical field of raw tea screening equipment, and particularly relates to four-stage winnowing equipment for screening natural raw tea, which comprises a feed hopper, a coarse screening structure connected to the bottom of the feed hopper, a first-stage screening structure arranged on the left side of the coarse screening structure, and a fine screening structure connected to the left side of the first-stage screening structure. The coarse screening structure comprises a guiding unit and a collecting and winnowing unit, the guiding unit comprises a feeding pipe, a guiding plate is installed in the feeding pipe, the bottom end of the feeding pipe is connected with a coarse filtering box, and a coarse filtering plate is installed in the coarse filtering box. According to the four-stage winnowing equipment for screening the natural raw tea, through the arrangement of a coarse screening structure, the installation of a guide plate in a feeding pipe and the transverse air blowing direction of a first air pump, tea leaves are prevented from being blown out through a feeding hopper, a coarse filtering plate filters sand and stones, and through the arrangement of a first leakage plate, large tea leaves can be screened and filtered; small tea leaves and broken tea leaves can be screened through the second leakage plate, and dust in the tea leaves and the broken tea leaves are screened and filtered through the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of raw tea screening equipment, in particular to four-stage wind selection equipment for natural raw tea screening. Background Art

[0002] Tea refers to the leaves of the evergreen shrub tea tree that can be used to make tea, as well as beverages made from these leaves. Tea contains theophylline, cholestenone, caffeine, inositol, folic acid, pantothenic acid and other ingredients that can improve human health. Before tea becomes a beverage, it generally needs to go through processing steps such as picking, sun drying, withering, frying, rolling and drying. The traditional way of sun drying tea is to use sunlight to dry naturally. However, this method of drying will often cause impurities such as stones and dust to be mixed in the tea leaves after they are dried, affecting the quality of the product.

[0003] And in the process of tea production, the quality of tea needs to be graded, but the current screening equipment used for tea cannot efficiently screen out tea of ​​different qualities and cleanliness.

[0004] For example, a tea screening and air selection device disclosed in Chinese patent CN216606122U is used, in which tea leaves enter from a first feed port, are slowed down by a baffle plate, and fall onto a screen of a vibrating inclined plate. As the vibrating inclined plate is driven up and down by an eccentric wheel, stones pass through the screen and fall onto a second discharge port, while tea leaves fall into a second feed port through the first discharge port under the action of a blower, and then enter a tea grading box. A first sieve plate, a second sieve plate, and a third sieve plate are sequentially arranged in the tea grading box. Large tea leaves can be intercepted by the first sieve plate, medium tea leaves by the second sieve plate, and small tea leaves by the third sieve plate. Broken tea leaves fall into the bottom of the tea grading box. The first, second, third, and fourth door panels are opened to collect tea leaves of different grades and remove tea residues at the same time.

[0005] However, the tea screening device used in the above-mentioned reference document, when using an air pump to blow air upward during the screening process, can easily cause the tea leaves to be blown back out from the inside of the feed port due to the wind force, thereby causing difficulty in feeding and affecting the screening effect of the tea leaves.

[0006] For this reason, we urgently need to provide a four-stage air separation equipment for screening natural raw tea. Utility Model Content

[0007] The purpose of the utility model is to provide a four-stage air separation equipment for screening natural raw tea, so as to solve the problem that in the tea screening device used in the above-mentioned comparative document proposed in the above-mentioned background technology, when an air pump is used to blow air upward during the screening process, the tea leaves are easily affected by the wind and blown back from the inside of the feed port, thereby causing difficulty in feeding and affecting the screening effect of the tea leaves.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a four-stage air separation equipment for natural raw tea screening, comprising a feed hopper, a coarse screen structure is connected to the bottom of the feed hopper, a primary screening structure is arranged on the left side of the coarse screen structure, and a fine screening structure is connected to the left side of the primary screening structure.

[0009] The coarse screening structure includes a guiding unit and a collecting and air-selecting unit.

[0010] The guide unit comprises a feed pipe, a guide plate is installed inside the feed pipe, a coarse filter box is connected to the bottom end of the feed pipe, and a coarse filter plate is installed inside the coarse filter box.

[0011] Preferably, the collecting and air-selecting unit includes a sand and gravel box, a blowing pipe is arranged on the top right side of the sand and gravel box, the right end of the blowing pipe is connected to a pump box, and a first air pump is installed inside the pump box.

[0012] Preferably, the sand box is installed inside a rectangular hole at the bottom of the front of the coarse filter box, a circular hole is opened on the left side of the blowing pipe and the middle of the right side of the coarse filter box near the bottom, and the output end of the first air pump is connected to the right end of the blowing pipe. The coarse filter plate is a solid frame with a filter installed inside, the coarse filter plate is inclined at a certain angle, the guide plate is installed obliquely inside the feed pipe, and the first air pump blows horizontally.

[0013] Preferably, the first-level screening structure includes a first-level screen box, a heating box is installed in the middle of the top surface of the first-level screen box, a second air pump is installed in the middle of the top surface of the heating box, a material guide pipe is installed in the middle of the bottom surface of the first-level screen box, the bottom end of the material guide pipe is connected to a collecting box, a collecting drawer is installed at the bottom of the collecting box, and a leakage plate is installed on the left side of the first-level screen box near the top.

[0014] Preferably, a rectangular through hole is provided on the right side of the primary screen box to communicate with a rectangular through hole 1 on the left side of the coarse filter box, the interior of the primary screen box is connected with the heating box and the output end of the second air pump, and the guide pipe connects the interior of the primary screen box with the interior of the collecting box 1. A plurality of through holes are provided on the left side of the leak plate 1, and a heating pipe is provided inside the heating box to enable the second air pump to blow out hot air.

[0015] Preferably, the fine screening structure includes a secondary screen box, a collecting box 2 is installed at the bottom of the secondary screen box, a collecting drawer 2 is installed inside the collecting box 2, a leak plate 2 is installed on the left side of the secondary screen box, a tertiary screen box is installed on the left side of the secondary screen box, a filter screen is installed on the top of the left side of the tertiary screen box, a collecting drawer 3 is installed at the bottom of the tertiary screen box, and a third air pump is installed on the right side of the secondary screen box.

[0016] Preferably, the top of the right side of the secondary screen box is connected to the left side of the primary screen box, and the right side of the tertiary screen box is connected to the second leaking plate. A plurality of through holes are provided on the left side of the second leaking plate, and the aperture of the through holes provided in the second leaking plate is smaller than that of the through holes provided in the first leaking plate, so that the filter can filter the dust particles and broken tea leaves in the tea leaves.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The four-stage air separation equipment for natural raw tea screening prevents tea leaves from being blown out through the feed hopper by setting a coarse screening structure, installing a guide plate inside the feed pipe, and the lateral blowing direction of the first air pump, and can filter sand and stone using a coarse filter plate.

[0019] 2. The four-stage air separation equipment for screening natural raw tea can screen and filter large tea leaves through the setting of the first-stage screening structure and the fine screening structure, and utilize the setting of the sieve plate one, and can screen small tea leaves and broken tea leaves through the sieve plate two, and then the dust and broken tea leaves in the tea leaves can be screened and filtered through the filter net. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the primary screening structure of the utility model;

[0023] Figure 4 It is an enlarged view of the internal structure of the screening structure of the utility model.

[0024] In the figure: 1, feed hopper; 101, feed pipe; 102, guide plate; 103, coarse filter box; 104, coarse filter plate; 105, sand box; 106, blow pipe; 107, pump box; 108, first air pump; 201, first-stage screen box; 202, heating box; 203, second air pump; 204, guide pipe; 205, collecting box one; 206, collecting drawer one; 207, leakage plate one; 301, second-stage screen box; 302, collecting box two; 303, collecting drawer two; 304, leakage plate two; 305, third-stage screen box; 306, filter screen; 307, collecting drawer three; 308, third air pump. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0027] Embodiment 1:

[0028] A four-stage air separation device for natural raw tea screening comprises a feed hopper 1, a coarse screening structure is connected to the bottom of the feed hopper 1, a primary screening structure is arranged on the left side of the coarse screening structure, and a fine screening structure is connected to the left side of the primary screening structure.

[0029] The coarse screening structure includes a guide unit and a collection and air selection unit. The guide unit includes a feed pipe 101, a guide plate 102 is installed inside the feed pipe 101, a coarse filter box 103 is connected to the bottom end of the feed pipe 101, and a coarse filter plate 104 is installed inside the coarse filter box 103. The collection and air selection unit includes a sand and stone box 105, a blow pipe 106 is arranged on the top right side of the sand and stone box 105, a pump box 107 is connected to the right end of the blow pipe 106, and a first air pump 108 is installed inside the pump box 107.

[0030] The sand box 105 is installed inside a rectangular hole at the bottom of the front side of the coarse filter box 103, and a circular hole is opened on the left side of the blowing pipe 106 and in the middle of the right side of the coarse filter box 103 near the bottom. The output end of the first air pump 108 is connected to the right end of the blowing pipe 106.

[0031] By setting up the coarse screening structure, utilizing the installation of the guide plate 102 inside the feed pipe 101 and the lateral blowing direction of the first air pump 108, tea leaves can be prevented from being blown out through the feed hopper 1, and the coarse filter plate 104 can be used to filter sand and gravel.

[0032] When screening the tea leaves, the tea leaves are placed into the feed pipe 101 through the feed hopper 1, and the tea leaves are guided into the coarse filter box 103 through the guide plate 102. The sand and gravel in the tea leaves are then filtered using the coarse filter plate 104. At the same time, the first air pump 108 is started to blow air into the coarse filter box 103 through the blowing pipe 106, so that the tea leaves can be subsequently air-selected and screened.

[0033] Embodiment 2:

[0034] The primary screening structure includes a primary screen box 201, a heating box 202 is installed in the middle of the top surface of the primary screen box 201, a second air pump 203 is installed in the middle of the top surface of the heating box 202, a material guide pipe 204 is installed in the middle of the bottom surface of the primary screen box 201, the bottom end of the material guide pipe 204 is connected to a collecting box 205, a collecting drawer 206 is installed at the bottom of the collecting box 205, and a leak plate 207 is installed near the top on the left side of the primary screen box 201. A rectangular through hole is provided on the right side of the primary screen box 201 to communicate with a rectangular through hole 1 provided on the left side of the coarse filter box 103, the interior of the primary screen box 201 is connected to the heating box 202 and the output end of the second air pump 203, and the material guide pipe 204 connects the interior of the primary screen box 201 and the interior of the collecting box 205.

[0035] The fine screening structure includes a secondary screen box 301, a collecting box 2 302 is installed at the bottom of the secondary screen box 301, a collecting drawer 2 303 is installed inside the collecting box 2 302, a leak plate 2 304 is installed on the left side of the secondary screen box 301, a tertiary screen box 305 is installed on the left side of the secondary screen box 301, a filter screen 306 is installed on the top of the left side of the tertiary screen box 305, a collecting drawer 3 307 is installed at the bottom of the tertiary screen box 305, and a third air pump 308 is installed on the right side of the secondary screen box 301. The top right side of the secondary screen box 301 is connected to the left side of the primary screen box 201, and the right side of the tertiary screen box 305 is connected to the leak plate 2 304.

[0036] Through the setting of the primary screening structure and the fine screening structure, the large tea leaves can be screened and filtered by using the setting of the leakage plate 1 207, and the small tea leaves and broken tea leaves can be screened by using the leakage plate 2 304. After that, the dust and broken tea leaves in the tea leaves can be screened and filtered through the filter net 306.

[0037] After the sand and stone in the tea leaves are filtered through the coarse filter plate 104, the heating box 202 and the second air pump 203 can be used to blow hot air to dry the moisture in the tea leaves. The second air pump 203 blows air longitudinally, and the blowing force of the second air pump 203 is smaller than the wind force of the first air pump 108. Due to gravity, large tea leaves can be allowed to enter the collecting box 1 205 through the guide pipe 204, so that the beaten tea leaves can be collected by the collecting tray 1 206. Small tea leaves and broken tea leaves can be filtered through the filter plate 1 207 and enter the secondary screen box 301. Then, the filter plate 2 304 can be used to allow the broken tea leaves to enter the tertiary screen box 305. At the same time, the filter net 306 is used to filter the dust in the tea leaves, and the collecting tray 2 303 is used to collect small tea leaves, and the collecting tray 3 307 can collect broken tea leaves.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A four-stage air separation device for natural raw tea screening, comprising a feed hopper (1), characterized in that: The bottom of the feed hopper (1) is connected to a coarse screen structure, a primary screening structure is arranged on the left side of the coarse screen structure, and a fine screening structure is connected to the left side of the primary screening structure; The coarse screening structure includes a guiding unit and a collecting and air-selecting unit; The guide unit comprises a feed pipe (101), a guide plate (102) is installed inside the feed pipe (101), a coarse filter box (103) is connected to the bottom end of the feed pipe (101), and a coarse filter plate (104) is installed inside the coarse filter box (103).

2. A four-stage air separation device for natural raw tea screening according to claim 1, characterized in that: The collecting and air separation unit includes a sand and stone box (105), a blow pipe (106) is arranged on the top right side of the sand and stone box (105), the right end of the blow pipe (106) is connected to a pump box (107), and a first air pump (108) is installed inside the pump box (107).

3. A four-stage air separation device for natural raw tea screening according to claim 2, characterized in that: The sand box (105) is installed inside a rectangular hole at the bottom of the front side of the coarse filter box (103), and a circular hole is opened on the left side of the blowing pipe (106) and in the middle of the right side of the coarse filter box (103) near the bottom, and the output end of the first air pump (108) is connected to the right end of the blowing pipe (106).

4. The four-stage air separation equipment for natural raw tea screening according to claim 1, characterized in that: The primary screening structure comprises a primary screen box (201), a heating box (202) is installed in the middle of the top surface of the primary screen box (201), a second air pump (203) is installed in the middle of the top surface of the heating box (202), a material guide pipe (204) is installed in the middle of the bottom surface of the primary screen box (201), the bottom end of the material guide pipe (204) is connected to a collecting box (205), a collecting drawer (206) is installed at the bottom of the collecting box (205), and a leak plate (207) is installed on the left side of the primary screen box (201) near the top.

5. A four-stage air separation device for natural raw tea screening according to claim 4, characterized in that: A rectangular through hole is provided on the right side of the primary screen box (201) and is connected to a rectangular through hole 1 on the left side of the coarse filter box (103); the interior of the primary screen box (201) is connected to the heating box (202) and the output end of the second air pump (203); and the guide pipe (204) connects the interior of the primary screen box (201) and the interior of the collecting box 1 (205).

6. The four-stage air separation equipment for natural raw tea screening according to claim 1, characterized in that: The fine screening structure comprises a secondary screen box (301), a second collecting box (302) is installed at the bottom of the secondary screen box (301), a second collecting drawer (303) is installed inside the second collecting box (302), a second leak plate (304) is installed on the left side of the secondary screen box (301), a third-stage screen box (305) is installed on the left side of the secondary screen box (301), a filter screen (306) is installed on the top of the left side of the third-stage screen box (305), a third collecting drawer (307) is installed at the bottom of the third-stage screen box (305), and a third air pump (308) is installed on the right side of the secondary screen box (301).

7. A four-stage air separation device for natural raw tea screening according to claim 6, characterized in that: The top of the right side of the secondary screen box (301) is connected to the left side of the primary screen box (201), and the right side of the tertiary screen box (305) is connected to the second leaking plate (304).

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