Screening device of vibration conveying equipment

Abstract

The utility model discloses a vibration conveying equipment screening device which comprises a screening assembly and a fast-assembly clamp used for fastening the screening assembly, the screening assembly comprises a vibration groove body and a screen arranged in the vibration groove body, the screen comprises a first layer of screen and a second layer of screen located below the first layer of screen, and hook holes are formed in the side wall face of the vibration groove body. The first layer of screen cloth is fastened in the vibration groove body through the hook holes by the fast-assembly clamp, a plurality of shell-shaped mesh holes are uniformly formed in the bottom end face of the first layer of screen cloth, the fast-assembly clamp comprises a clamp base arranged at the hook holes and a movable handle connected with the clamp base through a connecting body, and positioning pin holes are formed in the side end of the connecting body; the movable handle comprises a handle body and a hook arranged in the handle body, and a spring positioning pin inserted into the positioning pin hole is arranged at the side end of the handle body in a penetrating mode. The device has the characteristics of reasonable structural design, low manufacturing cost, high practicability and the like.

Description

Technical Field

[0001] This utility model relates to the field of tobacco machinery and equipment technology, and in particular to a screening device for a vibrating conveyor. Background Technology

[0002] Vibrating conveyors have advantages such as simple structure, convenient installation and maintenance, and low noise, and are widely used in industries such as food, chemical, metallurgy, coal, and building materials. In cigarette production, vibrating conveyors are used to transport tobacco leaves or shredded tobacco. In some process sections, vibrating conveyors need to be equipped with screens to filter out broken tobacco and improve material quality. In existing technology, the screens of the vibrating conveyors before the shredder are double-layered, with both layers fixed by rivets. The first layer screens small tobacco leaves smaller than 6mm, and the second layer screens broken tobacco and tobacco dust smaller than 3mm. After screening by the first layer screen, the 3-6mm small tobacco leaves are directly conveyed past the shredder to the post-shredding process to avoid producing broken tobacco shreds during shredding. After screening by the second layer screen, broken tobacco and tobacco dust smaller than 3mm are directly conveyed to the briquetting machine for disposal.

[0003] However, in actual production, it was found that the existing screen structure design was unreasonable. Tobacco stems would fill the screen holes of the first layer of screen during vibration transport, causing blockage and weakening the screening capacity of the first layer of screen. In addition, the rivet fixing method of the screen made disassembly and assembly complicated, increasing the difficulty of screen maintenance. As a result, the first layer of screen could not be cleaned in time during production, posing a risk of material mixing. It could only be disassembled and cleaned in about 3-4 hours during production stoppages for maintenance, which not only seriously affected production efficiency, but also made the second layer of screen prone to tobacco insects due to prolonged lack of effective cleaning, further affecting the quality of cigarettes. Utility Model Content

[0004] In view of this, the present invention provides a screening device for a vibrating conveyor, which can solve the technical problem that when using the existing screen structure in actual production, tobacco stems will fill the screen holes of the first layer of screen during the vibrating transport process, causing blockage and weakening the screening capacity of the first layer of screen. It can also solve the technical problem that the rivet fixing method of the screen is complicated to disassemble and assemble, which increases the difficulty of screen maintenance.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] A screening device for a vibrating conveyor includes a screening assembly and a quick-release clamp for fastening the screening assembly. The screening assembly includes a vibrating trough body and a screen installed inside it. The bottom of the vibrating trough body has a discharge port connected to a guide channel. The screen includes a first layer of screen and a second layer of screen below it. The side wall of the vibrating trough body has hook holes. The quick-release clamp fastens the first layer of screen to the inside of the vibrating trough body through the hook holes. The first layer of screen is provided with a side guard plate, and a protective cover is provided on the surface of the side guard plate. A fixed handle is provided at the top of the protective cover. The bottom surface of the first layer of screen has a plurality of shell-shaped mesh holes evenly distributed. The quick-release clamp includes a clamp base located at the hook holes and a movable handle connected to the clamp base through a connector. A positioning pin hole is provided on the side end of the connector. The movable handle includes a handle body and a hook installed inside it. A spring positioning pin is inserted through the side end of the handle body and inserted into the positioning pin hole.

[0007] As an improvement to the above technical solution, the vibrating trough body is provided with a platform inside, which provides support for the screen. The platform includes a first platform and a second platform located inside it. The first layer of screen is placed on the top of the first platform, and the second layer of screen is placed on the top of the second platform. The height of the first platform is lower than the opening height of the hook hole to ensure that the quick-release clamp can contact the first layer of screen and successfully fasten the first layer of screen to the top of the first platform inside the vibrating trough body.

[0008] As an improvement to the above technical solution, there are two discharge ports, namely discharge port I and discharge port II. Discharge port I is located on the surface of the vibrating trough body below the discharge end of the second screen, and discharge port II is located on the surface of the vibrating trough body below the discharge end of the first screen. There are two guide channels, namely guide channel I and guide channel II. Guide channel I is connected to discharge port I, and guide channel II is connected to discharge port II.

[0009] As an improvement to the above technical solution, the left and right ends of the first layer of screen are symmetrically provided with side guards. When the first layer of screen is placed inside the vibrating trough body, the side guards at the left and right ends of the first layer of screen can fit against the inner wall of the vibrating trough body respectively. The front and rear ends of the side guards are provided with protective covers with openings facing outwards. The protective covers divide the surface of the first layer of screen into a working area for quick-release clamps to fasten the first layer of screen. The top of the fixing handle faces the inside of the first layer of screen. The first layer of screen can be quickly and effectively pulled out of the vibrating trough body through the fixing handle.

[0010] Preferably, there are two first-layer screens. The two first-layer screens are laid from the feed end of the vibrating trough body to the discharge end of the vibrating trough body. Each first-layer screen is equipped with four protective covers, which are evenly distributed on the side guard plate surfaces at the left and right ends of the first-layer screen. The distribution position and number of hook holes on the side wall of the vibrating trough body are consistent with the distribution position and number of protective covers.

[0011] As an improvement to the above technical solution, the surface of the first layer of screen is set with the opening direction of the shell-shaped mesh openings aligned with the material conveying direction. This can prevent tobacco stems in the material from being inserted into the mesh openings during vibration conveying, which would cause mesh blockage and weaken the screening capacity of the first layer of screen.

[0012] As an improvement to the above technical solution, threaded holes are provided at both the left and right ends of the clamp base. The clamp base is fixed to the hook hole on the outer wall of the vibrating groove body by bolts that mate with the threaded holes. The connecting body is fixedly connected to the surface of the clamp base. The movable handle is movably connected to the connecting body by a pin. The movable handle can move up and down relative to the connecting body with the pin as the center. A movable shaft is provided inside the end of the handle body away from the connecting part. The tail end of the hook passes through the movable shaft and is fastened. The hook can move relative to the handle body with the movable shaft as the center. The head end of the hook is bent. One side of the connecting body extends a certain distance towards the movable shaft of the movable handle. A positioning pin hole is opened on the surface of the side of the connecting body that extends a certain distance. The spring positioning pin can pass through the side of the handle body and be aligned and inserted into the positioning pin hole.

[0013] Preferably, the placement and quantity of the quick-assembly clamps are consistent with the distribution and quantity of the hook holes.

[0014] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0015] This utility model features a reasonable structural design, low cost, and strong practicality. The shell-shaped mesh on the surface of the first-layer screen prevents tobacco stems from getting stuck in the mesh during vibration conveying, thus avoiding clogging and reducing the screening capacity of the first-layer screen. The quick-release clamp not only secures the first-layer screen to the vibrating trough body but also allows for quick and effective disassembly, reducing maintenance difficulty, improving production efficiency, saving manpower, and preventing the second-layer screen from becoming uncleaned and breeding tobacco insects, which could affect cigarette quality. The spring positioning pin of the quick-release clamp penetrates the side of the handle body and aligns with the insertion pin hole, creating a double self-locking mechanism between the handle body and the front outer surface of the clamp base.

[0016] Other beneficial effects of this invention will be further explained in the following specific embodiments. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of the first layer of screen of this utility model;

[0020] Figure 3 This is a partial enlarged view of the quick clamp of this utility model;

[0021] Figure 4 This is a schematic diagram of the quick-assembly clamp structure of this utility model;

[0022] The components are: 1. Vibrating trough body; 2. Screen; 201. Side guard plate; 202. Protective cover; 203. Fixed handle; 204. Mesh opening; 3. Hook hole; 4. Quick-release clamp; 401. Clamp base; 402. Connector; 403. Positioning pin hole; 404. Handle body; 405. Hook; 406. Movable shaft; 407. Spring positioning pin; 408. Threaded hole. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "above", "below", "front", "back", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," "linking," "fixing," and "communicating" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figures 1 to 4 As shown, this utility model provides a screening device for a vibrating conveyor system.

[0027] It includes a screening assembly and a quick-release clamp 4 for fastening the screening assembly. The screening assembly includes a vibrating trough body 1 and a screen installed inside it. The bottom of the vibrating trough body 1 has a discharge port connected to a guide channel. The screen includes a first layer of screen 2 and a second layer of screen below it. The side wall of the vibrating trough body 1 has hook holes 3. The quick-release clamp 4 fastens the first layer of screen 2 to the inside of the vibrating trough body 1 through the hook holes 3. The first layer of screen 2 is provided with a side guard plate 201, and a protective cover 202 is provided on the surface of the side guard plate 201. The top of the protective cover 202 is provided with a fixed handle 203. The bottom surface of the first layer of screen 2 is evenly provided with a number of shell-shaped mesh holes 204. The quick-installation clamp 4 includes a clamp base 401 provided at the hook hole 3 and a movable handle connected to the clamp base 401 through a connector 402. The side end of the connector 402 is provided with a positioning pin hole 403. The movable handle includes a handle body 404 and a hook 405 provided inside it. The side end of the handle body 404 is provided with a spring positioning pin 407 that is inserted into the positioning pin hole 403.

[0028] In the embodiments described in this utility model, the vibrating groove body 1 is provided with a platform inside, which provides support for the screen. The platform includes a first platform and a second platform located inside it. The first layer of screen 2 is placed on the top of the first platform, and the second layer of screen is placed on the top of the second platform. The height of the first platform is lower than the opening height of the hook hole 3 to ensure that the quick-release clamp 4 can contact the first layer of screen 2 and smoothly fasten the first layer of screen 2 to the top of the first platform inside the vibrating groove body 1.

[0029] In the embodiments described in this utility model, there are two discharge ports, namely discharge port I and discharge port II. Discharge port I is located on the surface of the vibrating trough body 1 below the discharge end of the second screen, and discharge port II is located on the surface of the vibrating trough body 1 below the discharge end of the first screen. There are two guide channels, namely guide channel I and guide channel II. Guide channel I is connected to discharge port I, and guide channel II is connected to discharge port II.

[0030] In the embodiment of this utility model, the left and right ends of the first layer screen 2 are symmetrically provided with side guard plates 201. When the first layer screen 2 is placed inside the vibrating trough body 1, the side guard plates 201 at the left and right ends of the first layer screen 2 can respectively fit against the inner wall surface of the vibrating trough body 1. The front and rear ends of the side guard plates 201 are evenly provided with protective covers 202 with openings facing outwards. The protective covers 202 divide the surface of the first layer screen 2 into a working area for the quick-release clamp 4 to fasten the first layer screen 2. The top of the fixing handle 203 faces the inner side of the first layer screen 2. The first layer screen 2 can be quickly and effectively pulled out of the vibrating trough body 1 through the fixing handle 203.

[0031] Preferably, there are two first-layer screens 2. The two first-layer screens 2 are laid from the feed end of the vibrating trough body 1 to the discharge end of the vibrating trough body 1. Each first-layer screen 2 is provided with four protective covers 202, which are evenly distributed on the surface of the side guard plates 201 at the left and right ends of the first-layer screen 2. The distribution position and number of hook holes 3 on the side wall of the vibrating trough body 1 are consistent with the distribution position and number of protective covers 202.

[0032] In the embodiments described in this utility model, the surface of the first layer screen 2 is configured with shell-shaped mesh holes 204 whose opening direction is consistent with the material conveying direction. This can prevent tobacco stems in the material from being inserted into the mesh holes 204 during vibration conveying, causing the mesh holes 204 to become blocked and thus weakening the screening capacity of the first layer screen 2.

[0033] In the embodiments described in this utility model, the quick-release clamp 4 not only secures the first layer of screen 2 to the inside of the vibrating groove body 1, but also enables quick and effective disassembly of the first layer of screen 2. This reduces the difficulty of screen maintenance, further improves production efficiency, and prevents the second layer of screen from being left uncleaned for a long time, thus avoiding the breeding of tobacco insects and affecting the quality of cigarettes.

[0034] The clamp base 401 has threaded holes 408 at both its left and right ends. Bolts that mate with the threaded holes 408 are used to fix the clamp base 401 to the hook hole 3 on the outer wall of the vibratory trough body 1. A connecting body 402 is fixedly connected to the surface of the clamp base 401. A movable handle is movably connected to the connecting body 402 via a pin. The movable handle can move up and down relative to the connecting body 402 about the pin. A movable shaft 406 is located inside the handle body 404 at the end furthest from the connecting member. The tail end of the hook 405 passes through the movable shaft 406 and is secured. The hook 405 can move relative to the handle body 404 about the movable shaft 406, ensuring that the head end of the hook 405 can smoothly enter the hook hole 3 when the handle body 404 is lifted. The head end of the hook 405 is hook-shaped; when the handle body 404 is pressed down, the head end of the hook 405 can hook and be fixed at the hook hole 3.

[0035] Specifically, the width of the end of the handle body 404 near the connector is greater than the width of the front end of the clamp base 401. When the first end of the hook 405 is attached to the hook hole 3 and the first end of the hook 405 contacts the surface of the first layer of screen 2 inside the protective cover 202, and the handle body 404 is moved downward around the pin, the end of the handle body 404 near the connector can be pressed against the outer surface of the front end of the clamp base 401, and the first layer of screen 2 is fastened to the inside of the vibrating groove body 1 to achieve a first self-locking purpose.

[0036] One side of the connector 402 extends a distance toward the movable shaft 406 of the movable handle. The positioning pin hole 403 is opened on the surface of the one side of the connector 402 that extends a distance. The spring positioning pin 407 can pass through the side of the handle body 404 and be aligned and inserted into the positioning pin hole 403. With the handle body 404 close to the front outer surface of the clamp base 401 to form a first self-locking engagement, the double self-locking function of the quick-install clamp 4 is achieved.

[0037] Preferably, the placement and quantity of the quick-installation clamps 4 are consistent with the distribution and quantity of the hook holes 3.

[0038] Based on the above, the working principle of this utility model is as follows:

[0039] Step S1: Before vibrating and conveying materials, install the screening device of the vibrating conveyor. First, lift the handle body 404 of the quick-release clamp 4 upwards so that the head end of the hook 405 is taken out from the hook hole 3. Then, place the second layer of screen inside the vibrating trough body 1, hold the fixing handle 203 of the first layer of screen 2 to place the first layer of screen 2 above the second layer of screen, ensuring that the protective cover 202 of the first layer of screen 2 is positioned one-to-one with the opening position of the hook hole 3. Place the head end of the hook 405 into the hook hole 3 and press down the handle body 404 so that the head end of the hook 405 is taken out from the hook hole 3. Contacting the surface of the first layer of screen 2 inside the protective cover 202, the end of the handle body 404 near the connector can be pressed against the front outer surface of the clamp base 401. The first layer of screen 2 is fastened to the inside of the vibrating groove body 1 to achieve a first self-locking purpose. At this time, the head end of the hook 405 is fixed at the hook hole 3. Finally, the spring positioning pin 407 that passes through the side end of the handle body 404 is aligned and inserted into the positioning pin hole 403. With the handle body 404 close to the front outer surface of the clamp base 401 to form a first self-locking cooperation, the double self-locking function of the quick-install clamp 4 is achieved.

[0040] Step S2: During the process of material being transported by the vibrating conveyor, the material is screened by the first layer of screen 2 laid from the feed end of the vibrating trough body 1 to the discharge end of the vibrating trough body 1. In the material, large tobacco leaves pass through the upper surface of the first layer of screen 2 and enter the feeder set at the rear end of the vibrating conveyor, where they are cut into tobacco shreds by the shredder. Small tobacco leaves with a size of 3-6mm fall through the shell-shaped mesh 204 on the surface of the first layer of screen 2 and reach the surface of the second layer of screen. Under the continuous vibration, they move forward to the discharge port II and are then discharged from the guide channel II. The second layer of screen separates the fragments and tobacco dust smaller than 3mm and discharges them to the designated position through the discharge port I from the guide channel I.

[0041] Step S3: When disassembling and maintaining the screening device of the vibrating conveyor, pull the spring positioning pin 407 outward to disengage the spring positioning pin 407 from the positioning pin hole 403, and lift the handle body 404 upward to further separate the end of the handle body 404 near the connector from the front outer surface of the clamp base 401. Then, take the first end of the hook 405 out of the hook hole 3, and hold the fixing handle 203 of the first layer screen 2 to lift the first layer screen 2 from the inside of the vibrating trough body 1 and place it in the preset maintenance position. Finally, perform maintenance work on the inside of the vibrating trough body 1, the first layer screen and the first layer screen 2.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screening device for a vibrating conveyor system, characterized in that: It includes a screening assembly and a quick-release clamp for fastening the screening assembly. The screening assembly includes a vibrating trough body and a screen installed inside it. The bottom of the vibrating trough body has a discharge port connected to a guide channel. The screen includes a first layer of screen and a second layer of screen below it. The side wall of the vibrating trough body has hook holes. The quick-release clamp fastens the first layer of screen to the inside of the vibrating trough body through the hook holes. The first layer of screen is provided with a side guard plate. The surface of the side guard plate is covered with a protective cover. The top of the protective cover is provided with a fixed handle. The bottom surface of the first layer of screen has several shell-shaped mesh holes evenly distributed. The quick-release clamp includes a clamp base located at the hook holes and a movable handle connected to the clamp base through a connector. The side end of the connector has a positioning pin hole. The movable handle includes a handle body and a hook installed inside it. A spring positioning pin is inserted through the side end of the handle body and inserted into the positioning pin hole.

2. The screening device of a vibrating conveyor according to claim 1, characterized in that: The vibrating trough body has a platform inside, which includes a first platform and a second platform located inside it. The first layer of screen is placed on top of the first platform, and the second layer of screen is placed on top of the second platform. The height of the first platform is lower than the opening height of the hook hole.

3. The screening device of a vibrating conveyor according to claim 1, characterized in that: There are two discharge ports, namely discharge port I and discharge port II. Discharge port I is located on the surface of the vibrating trough body below the discharge end of the second screen, and discharge port II is located on the surface of the vibrating trough body below the discharge end of the first screen. There are two guide channels, namely guide channel I and guide channel II. Guide channel I is connected to discharge port I, and guide channel II is connected to discharge port II.

4. The screening device of a vibrating conveyor according to claim 1, characterized in that: The left and right ends of the first layer of screen are symmetrically provided with side guards. When the first layer of screen is placed inside the vibrating trough body, the side guards at the left and right ends of the first layer of screen can fit against the inner wall of the vibrating trough body respectively. The front and rear ends of the side guards are provided with protective covers with openings facing outwards. The protective covers divide the surface of the first layer of screen into a working area for quick-installation clamps to fasten the first layer of screen. The top of the fixing handle faces the inside of the first layer of screen.

5. A screening device for a vibrating conveyor according to claim 1, characterized in that: The surface of the first layer of screen is set with shell-shaped mesh openings that are aligned with the material conveying direction.

6. A screening device for a vibrating conveyor according to claim 1, characterized in that: The fixture base has threaded holes at both its left and right ends. The fixture base is fixed to the hook hole on the outer wall of the vibrating groove body by bolts that mate with the threaded holes. The connecting body is fixedly connected to the surface of the fixture base. The movable handle is movably connected to the connecting body by a pin. The movable handle can move up and down relative to the connecting body with the pin as the center. The handle body has a movable shaft inside at the end away from the connecting part. The tail end of the hook passes through the movable shaft and is fastened. The hook can move relative to the handle body with the movable shaft as the center. The head end of the hook is bent. One side of the connecting body extends a certain distance towards the movable shaft of the movable handle. The positioning pin hole is opened on the surface of the side of the connecting body that extends a certain distance. The spring positioning pin can pass through the side of the handle body and be aligned and inserted into the positioning pin hole.

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