A screen and screening apparatus

Abstract

The utility model relates to a screen cloth and screening equipment, wherein the screen cloth comprises an upper screen plate, a lower screen plate and a distance adjusting piece; the upper screen plate and the lower screen plate are arranged in parallel; the distance adjusting piece is used for adjusting the distance between the upper screen plate and the lower screen plate; a plurality of through ports are arranged on the upper screen plate; a shell sieve hole corresponding to each through port and capable of passing through the through port is arranged on the lower screen plate; the part of the shell sieve hole exposed from the upper screen plate is a passageway for screening tobacco shreds; the area of the passageway can be adjusted by changing the distance between the upper screen plate and the lower screen plate. The utility model realizes the size change of the shell sieve hole exposed based on the cooperation of the upper screen plate and the lower screen plate, so as to form screening passageways of different size specifications, and then different size tobacco shreds are screened out, the cost can be reduced when different size tobacco shreds are screened, the screen cloth does not need to be replaced, and only the distance adjusting piece needs to be adjusted, which saves time and effort.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular to a screen and screening equipment. Background Technology

[0002] To meet consumer demand, the variety of tobacco products is constantly being updated, placing higher demands on tobacco processing technology. With the goal of product diversification and improved tobacco quality, the tobacco processing technology allows for the classification and screening of tobacco shreds, resulting in various grades. This provides a wider range of materials for new product development, thus meeting the evolving needs of the consumer market. Currently, fixed-size screens are used for tobacco shredding. When different grades of tobacco need to be separated, the screens must be replaced, requiring the preparation of different sized screens, which is costly and time-consuming to install and replace. These problems urgently need to be addressed. Utility Model Content

[0003] This utility model discloses a screen and screening equipment, which aims to solve the technical problems existing in the prior art.

[0004] The present invention adopts the following technical solution: In a first aspect, the present invention provides a sieve, comprising an upper sieve plate, a lower sieve plate, and a spacing adjustment component; the upper sieve plate and the lower sieve plate are arranged in parallel; the spacing adjustment component is used to adjust the distance between the upper sieve plate and the lower sieve plate; the upper sieve plate is provided with a plurality of through-holes; the lower sieve plate is provided with shell sieve holes corresponding one-to-one with the through-holes and capable of passing through the through-holes; the portion of the shell sieve holes protruding from the upper sieve plate is a channel for sieving tobacco shreds; the area of ​​the channel opening can be adjusted by changing the distance between the upper sieve plate and the lower sieve plate.

[0005] In the sieve of this utility model, the opening of the shell sieve hole is perpendicular to the lower sieve plate and fits against the edge of the passage.

[0006] In the sieve of this utility model, an elastic pusher is provided on the side of the passage opening away from the opening of the shell sieve hole; the elastic pusher is used to push the opening of the shell sieve hole against the edge of the passage opening.

[0007] In the sieve of this utility model, the elastic pushing member is disposed at a position other than the edge adjacent to the opening of the shell sieve hole, and its bottom surface abuts against the surface of the shell sieve hole to cover the gap between the shell sieve hole and the opening.

[0008] In the sieve of this invention, the elastic pusher is inserted into the edge of the passage.

[0009] The sieve of this utility model also includes an elastic element; the elastic element is disposed between the upper sieve plate and the lower sieve plate, and together with the shell sieve holes, forms a channel.

[0010] In the sieve of this invention, the elastic element is a strip structure with a trapezoidal cross-section.

[0011] In the screen of this utility model, the spacing adjustment component is a screw with opposite thread directions on both sides, and is screwed to the upper screen plate and the lower screen plate.

[0012] In the sieve of this utility model, the cross-sectional dimensions of the shell sieve holes increase from the feed side to the discharge side.

[0013] In a second aspect, the present invention also provides a screening device, which includes any of the screens described above.

[0014] The technical solution adopted in this utility model can achieve the following beneficial effects: This utility model mainly provides a screen, which, based on the cooperation of the upper and lower screen plates, realizes the size variation of the exposed shell screen holes to form screening channels of different sizes and specifications, thereby enabling the screening of tobacco shreds of different sizes. It can reduce costs when screening tobacco shreds of different specifications, and there is no need to replace the screen, only the spacing adjustment component needs to be adjusted, saving time and effort. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of this utility model. The illustrative embodiments of this utility model and their descriptions explain this utility model and do not constitute an improper limitation of this utility model. In the drawings: Figure 1 This is a three-dimensional structural diagram of a sieve according to the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of a screen according to the present invention.

[0016] Explanation of reference numerals in the attached figures: 1. Upper sieve plate; 11. Through-hole; 12. Elastic pusher; 2. Lower sieve plate; 21. Shell sieve hole; 3. Spacing adjustment component; 4. Channel opening; 5. Elastic component. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this utility model, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly stated otherwise.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0019] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] To address the problems existing in the prior art, this application provides a screen.

[0021] like Figure 1 and Figure 2 As shown, a sieve includes an upper sieve plate 1, a lower sieve plate 2, and a spacing adjustment component 3; the upper sieve plate 1 and the lower sieve plate 2 are arranged in parallel; the spacing adjustment component 3 is used to adjust the distance between the upper sieve plate 1 and the lower sieve plate 2; the upper sieve plate 1 is provided with a plurality of through-holes 11; the lower sieve plate 2 is provided with shell sieve holes 21 corresponding one-to-one with the through-holes 11 and capable of passing through the through-holes 11; the portion of the shell sieve holes 21 exposed on the upper sieve plate 1 is a channel 4 for sieving tobacco shreds; the area of ​​the channel 4 can be adjusted by changing the distance between the upper sieve plate 1 and the lower sieve plate 2, that is, by adjusting the size of the portion of the shell sieve holes 21 exposed on the upper sieve plate 1.

[0022] The present invention provides a screen that, based on the cooperation of the upper screen plate 1 and the lower screen plate 2, achieves the size variation of the exposed shell screen holes 21 to form screening channels of different sizes and specifications, thereby enabling the screening of tobacco shreds of different sizes. This reduces costs when screening tobacco shreds of different specifications, and eliminates the need to replace the screen; only the spacing adjustment component 3 needs to be adjusted, saving time and effort.

[0023] In some preferred embodiments, the opening of the shell sieve hole 21 is perpendicular to the lower sieve plate 2 and fits against the edge of the passage 11; that is, the edge of the passage 11 adjacent to the shell sieve hole 21 is set to fit against the edge of the shell sieve hole 21, so that the size of the formed channel opening 4 is easier to calculate.

[0024] In some preferred embodiments, an elastic pusher 12 is provided on the side of the passage 11 away from the opening of the shell sieve hole 21; the elastic pusher 12 is used to press the opening of the shell sieve hole 21 against the edge of the passage 11; based on the provision of the elastic pusher 12, the size of the formed channel opening 4 can be kept stable.

[0025] Preferably, the elastic pusher 12 is disposed at other positions of the passage 11 except for the edge adjacent to the opening of the shell sieve hole 21, and its bottom surface abuts against the surface of the shell sieve hole 21 to cover the gap between the shell sieve hole 21 and the passage 11; that is, the elastic pusher 12 protrudes from the edge of the passage 11 and overlaps with the projection of the shell sieve hole 21 in its moving direction. Thus, when adjusting the size of the exposed part of the shell sieve hole 21, the top surface of the shell sieve hole 21 abuts against the bottom surface of the protruding part of the elastic pusher 12. Based on the elastic deformation of the elastic pusher 12, it exerts a downward force on the shell sieve hole 21 and a force towards the opening of the shell sieve hole 21, as well as an inward force on both sides of the opening of the shell sieve hole 21. This abuts the shell sieve hole 21 against the edge of the passage 11, and can prevent tobacco from falling out of the gap between the shell sieve hole 21 and the passage 11, and can help transport tobacco and prevent accumulation at the junction of the shell sieve hole 21 and the passage 11.

[0026] More preferably, the elastic pusher 12 is inserted into the edge of the through-hole 11, for example, the top surface of the elastic pusher 12 is flush with the top surface of the upper screen plate 1.

[0027] More preferably, the portion of the elastic pusher 12 that abuts against the shell screen 21 is an arc-shaped surface adapted to the shell screen 21, thereby improving the pushing effect on the shell screen 21 and reducing the resistance to tobacco conveying.

[0028] In some preferred embodiments, an elastic element 5 is also included; the elastic element 5 is disposed between the upper screen plate 1 and the lower screen plate 2, and together with the shell screen hole 21 forms a channel; thereby preventing the screened tobacco from entering between the upper screen plate 1 and the lower screen plate 2.

[0029] Preferably, the elastic element 5 is a strip structure with a trapezoidal cross-section; specifically, the outer side of the bottom edge of the trapezoid is flush with the discharge port of the shell screen 21 to improve the smoothness of the tobacco falling.

[0030] In some preferred embodiments, the spacing adjustment element 3 is a screw with opposite thread directions on both sides, and is screwed to the upper screen plate 1 and the lower screen plate 2; based on using a screw as the spacing adjustment element 3, the continuity of the adjustment process can be improved to adapt to different screening requirements.

[0031] In some preferred embodiments, the cross-sectional size of the shell screen aperture 21 increases from the feed side to the discharge side; thereby ensuring smooth screening.

[0032] In some preferred embodiments, the shell screen holes 21 can be formed by stamping the lower screen plate 2. For example, the semi-circular part inside the lower screen plate 2 is stamped to form a screen hole channel with the inlet perpendicular to the lower screen plate 2 and the outlet located on the plane of the lower screen plate 2. That is, the hole wall of the shell screen hole 21 is an arc-shaped transition surface from the inlet to the outlet of the shell screen hole 21, and the edges of the inlet and outlet are connected.

[0033] A screening device comprising any of the screens described above.

[0034] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.

Claims

1. A sieve, characterized in that, Includes upper sieve plate, lower sieve plate, and spacing adjustment components; The upper sieve plate and the lower sieve plate are arranged in parallel; The spacing adjustment component is used to adjust the distance between the upper sieve plate and the lower sieve plate; The upper sieve plate is provided with multiple passage ports; The lower sieve plate is provided with shell sieve holes that correspond one-to-one with the passage openings and can pass through the passage openings; The portion of the shell sieve holes that protrudes from the upper sieve plate serves as a channel for sieving tobacco shreds; The area of ​​the channel opening can be adjusted by changing the distance between the upper sieve plate and the lower sieve plate.

2. The sieve according to claim 1, characterized in that, The openings of the shell sieve holes are perpendicular to the lower sieve plate and fit against the edge of the passage.

3. The sieve according to claim 1, characterized in that, An elastic pusher is provided on the side of the opening opposite to the sieve hole of the seashell; The elastic pusher is used to press the opening of the shell sieve against the edge of the passage.

4. The sieve according to claim 3, characterized in that, The elastic pusher is disposed at a position other than the edge adjacent to the opening of the shell sieve hole, and its bottom surface abuts against the surface of the shell sieve hole to cover the gap between the shell sieve hole and the opening.

5. The sieve according to claim 3, characterized in that, The elastic pusher is inserted into the edge of the passage.

6. The sieve according to claim 1, characterized in that, It also includes elastic components; The elastic element is abutted between the upper sieve plate and the lower sieve plate, and together with the shell sieve holes, forms a channel.

7. The sieve according to claim 6, characterized in that, The elastic element is a strip structure with a trapezoidal cross-section.

8. The sieve according to any one of claims 1-7, characterized in that, The spacing adjustment component is a screw with opposite thread directions on both sides, and is screwed to the upper sieve plate and the lower sieve plate.

9. The sieve according to any one of claims 1-7, characterized in that, The cross-sectional dimensions of the shell screen holes increase from the feed side to the discharge side.

10. A screening device, characterized in that, Includes the sieve described in any one of claims 1-9.

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