CN210876193U

CN210876193U - Environmental protection efficient classifying screen

Info

Publication number: CN210876193U
Application number: CN201921428227.0U
Authority: CN
Inventors: 闫世斌; 李彦斌; 司艳文
Original assignee: Wuhai Qianlishan Coal Preparation Co ltd
Current assignee: Wuhai Qianlishan Coal Preparation Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-06-30
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses an environment-friendly and efficient grading sieve, which comprises a vertically arranged closed vibrating box body, wherein a coarse grain sieve plate and a medium grain sieve plate are sequentially arranged in the closed vibrating box body from top to bottom, and a reciprocating linear vibrating mechanism is arranged in a transmission box body; the utility model has the advantages that: the utility model has simple structure, and the vibration screening action is carried out in the whole box body by designing the totally-enclosed vibration box body, thereby reducing the generation of dust and ensuring the clean production; and a special reciprocating linear vibration mechanism is adopted, so that the vibration amplitude of the vibration box body is increased, the screening efficiency is improved, and material blockage is prevented.

Description

Environmental protection efficient classifying screen

The technical field is as follows:

the utility model relates to a coal dressing technical field especially relates to an environmental protection efficient classifying screen.

Background art:

the classifying screen is essential coal preparation equipment in the coal preparation process, and mainly has the functions of screening and classifying coal particles so as to facilitate the smooth proceeding of subsequent processes, the existing classifying screen is mostly open, and the classifying screen has large dust in the screening process, pollutes the surrounding environment and is not beneficial to clean production; and the traditional classifying screen adopts a vibration motor as a vibration source, so that the vibration amplitude is small, the phenomenon of material blockage is easily caused, the screening effect is not ideal, and the working efficiency needs to be improved.

The utility model has the following contents:

an object of the utility model is to provide an environmental protection efficient classifying screen.

The content of the utility model is as follows: the utility model provides an environmental protection efficient classifying screen, its closed vibrating box that includes vertical setting, from last to having set gradually coarse grain sieve and well grain sieve in the closed vibrating box down, the coarse grain sieve sets up from a left side to right side slope down, well grain sieve sets up from a right side to left side slope down, the interior bottom surface of closed vibrating box sets up from a left side to right side slope down, the sieve mesh diameter of well grain sieve is less than the sieve mesh diameter of coarse grain sieve, the outer wall of closed vibrating box has coarse grain discharge gate, well grain discharge gate and fine grain discharge gate to opening in proper order down from last, the lower extreme of coarse grain sieve stretches out the coarse grain discharge gate, the lower extreme of well grain sieve stretches out the well grain discharge gate, the interior bottom surface of closed box extends to outside the fine grain discharge gate the top of closed vibrating box is provided with the feeder hopper, the feeder hopper is located directly over the coarse material sieve highest end, the bottom of sealing the vibration box installs the slide rail be provided with the transmission box under sealing the vibration box, open the top surface of transmission box has the spout, the slide rail with spout sliding connection install reciprocal linear vibration mechanism in the transmission box, the slip post at reciprocal linear vibration mechanism both ends passes behind the inner wall of transmission box with seal the bottom surface fixed connection of vibration box.

Further, reciprocal linear vibration mechanism includes bar ring gear and half-tooth gear, the bar ring gear includes last rack and the lower rack that the level set up, go up the rack with the both ends of rack are through connecting arc fixed connection down, half-tooth gear with go up the gear periodic meshing down, the center and the transmission shaft fixed connection of half-tooth gear, the both ends of transmission shaft pass through the bearing with the inner wall swivelling joint of transmission box, the transmission shaft is connected with motor drive connect the outside fixedly connected with L shape of level on the arc the slip post of transmission box is last to be opened there is the slip through-hole, the slip post with slip through-hole sliding connection, the other end of slip post with the bottom fixed connection of closed vibration box.

Furthermore, the included angles between the inner bottom surfaces of the coarse grain sieve plate, the medium grain sieve plate and the closed vibration box body and the horizontal direction are 4-8 degrees.

Furthermore, the top ends of the coarse particle discharge port, the medium particle discharge port and the fine particle discharge port are connected with dust sealing curtains.

The utility model has the advantages that: the utility model has simple structure, and the vibration screening action is carried out in the whole box body by designing the totally-enclosed vibration box body, thereby reducing the generation of dust and ensuring the clean production; and a special reciprocating linear vibration mechanism is adopted, so that the vibration amplitude of the vibration box body is increased, the screening efficiency is improved, and material blockage is prevented.

Description of the drawings:

FIG. 1 is a sectional view of the internal structure of the present invention;

FIG. 2 is a front view of the present invention;

in the figure, a closed vibration box body 1, a coarse grain sieve plate 2, a medium grain sieve plate 3, a coarse grain discharge port 4, a medium grain discharge port 5, a fine grain discharge port 6, a feed hopper 7, a slide rail 8, a transmission box body 9, a sliding column 11, a half-tooth gear 12, an upper rack 13, a lower rack 14, a connecting arc 15, a transmission shaft 16, a motor 17, a sliding through hole 18 and a dust sealing curtain 19.

The specific implementation mode is as follows:

as shown in fig. 1 and 2, an environment-friendly and efficient classifying screen comprises a sealed vibrating box body 1 which is vertically arranged, a coarse grain sieve plate 2 and a medium grain sieve plate 3 are sequentially arranged in the sealed vibrating box body 1 from top to bottom, the coarse grain sieve plate 2 is obliquely arranged from left to right, the medium grain sieve plate 3 is obliquely arranged from right to left, the inner bottom surface of the sealed vibrating box body 1 is obliquely arranged from left to right, the sieve pore diameter of the medium grain sieve plate 3 is smaller than that of the coarse grain sieve plate 2, a coarse grain discharge port 4, a medium grain discharge port 5 and a fine grain discharge port 6 are sequentially arranged on the outer wall of the sealed vibrating box body 1 from top to bottom, the lowest end of the coarse grain sieve plate 2 extends out of the coarse grain discharge port 4, the lowest end of the medium grain sieve plate 3 extends out of the medium grain discharge port 5, the inner bottom surface of the sealed vibrating box body 1 extends out of the, a feed hopper 7 is arranged at the top end of the closed vibration box body 1, the feed hopper 7 is positioned right above the highest end of the coarse grain sieve plate 2, a slide rail 8 is arranged at the bottom end of the closed vibration box body 1, a transmission box body 9 is arranged right below the closed vibration box body 1, a slide groove is formed in the top surface of the transmission box body 9, the slide rail 8 is in sliding connection with the slide groove, a reciprocating linear vibration mechanism is arranged in the transmission box body 9, and sliding columns 11 at two ends of the reciprocating linear vibration mechanism penetrate through the inner wall of the transmission box body 9 and then are fixedly connected with the bottom surface of the closed vibration box body 1; the reciprocating linear vibration mechanism comprises a strip-shaped gear ring and a half-tooth gear 12, the strip-shaped gear ring comprises an upper rack 13 and a lower rack 14 which are horizontally arranged, the two ends of the upper rack 13 and the lower rack 14 are fixedly connected through a connecting arc 15, the half-tooth gear 12 is periodically meshed with the upper rack 13 and the lower rack 14, the center of the half-tooth gear 12 is fixedly connected with a transmission shaft 16, two ends of the transmission shaft 16 are rotatably connected with the inner wall of the transmission box body 9 through bearings, the transmission shaft 16 is in transmission connection with a motor 17, an L-shaped sliding column 11 is fixedly connected to the connecting arc 15 horizontally and outwards, a sliding through hole 18 is formed on the inner wall of the transmission case body 9, the sliding column 11 is connected with the sliding through hole 18 in a sliding manner, and the other end of the sliding column 11 is fixedly connected with the bottom end of the closed vibrating box body 1; the included angles between the inner bottom surfaces of the coarse grain sieve plate 2, the medium grain sieve plate 3 and the closed vibration box body 1 and the horizontal direction are 4-8 degrees; and dust sealing curtains 19 are connected to the top ends of the coarse particle discharge port 4, the medium particle discharge port 5 and the fine particle discharge port 6.

The working principle is as follows: during operation, the starting motor 17 drives the half-tooth gear 12 to rotate, when the meshing teeth of the half-tooth gear 12 are meshed with the upper rack 13, the closed vibration box body 1 moves leftwards, when the meshing teeth of the half-tooth gear 12 are meshed with the lower rack 14, the closed vibration box body 1 moves rightwards, reciprocating linear vibration is carried out in this way, in the process, coal enters the closed vibration box body 1 from the feed hopper 7, then passes through the screening of the coarse particle screen plate 2 and the medium particle screen plate 3 in sequence, and finally is discharged from the coarse particle discharge port 4, the medium particle discharge port 5 and the fine particle discharge port 6 respectively.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an environmental protection efficient classifying screen which characterized in that: it includes the sealed vibrating box body (1) of vertical setting, from last to having set gradually coarse grain sieve (2) and well grain sieve (3) down in sealed vibrating box body (1), coarse grain sieve (2) incline from a left side to right side and set up downwards, well grain sieve (3) incline from a right side to left side and set up downwards, the interior bottom surface of sealed vibrating box body (1) inclines from a left side to right side and sets up downwards, the sieve mesh diameter of well grain sieve (3) is less than the sieve mesh diameter of coarse grain sieve (2), the outer wall of sealed vibrating box body (1) is from last to opening in proper order down has coarse grain discharge gate (4), well grain discharge gate (5) and fine grain discharge gate (6), the least significant end of coarse grain sieve (2) stretches out coarse grain discharge gate (4), the least significant end of well grain sieve (3) stretches out well grain discharge gate (5), the interior bottom surface of sealed vibrating box body (1) extends to outside fine grain discharge gate (6), seal the top of vibrating box (1) and be provided with feeder hopper (7), feeder hopper (7) are located directly over coarse grain sieve (2) highest end seal the bottom of vibrating box (1) and install slide rail (8) be provided with transmission box (9) under sealed vibrating box (1), open the top surface of transmission box (9) has the spout, slide rail (8) with spout sliding connection install reciprocal rectilinear vibration mechanism in transmission box (9), slip post (11) at reciprocal rectilinear vibration mechanism both ends pass behind the inner wall of transmission box (9) with seal the bottom surface fixed connection of vibrating box (1).

2. The environmentally friendly and efficient sizing screen of claim 1, wherein: the reciprocating linear vibration mechanism comprises a bar-shaped gear ring and a semi-toothed gear (12), wherein the bar-shaped gear ring comprises an upper rack (13) and a lower rack (14) which are horizontally arranged, the upper rack (13) and the two ends of the lower rack (14) are fixedly connected through a connecting arc (15), the semi-toothed gear (12) is periodically meshed with the upper rack (13) and the lower rack (14), the center of the semi-toothed gear (12) is fixedly connected with a transmission shaft (16), the two ends of the transmission shaft (16) are rotatably connected with the inner wall of the transmission case body (9) through bearings, the transmission shaft (16) is in transmission connection with a motor (17), the upper end of the connecting arc (15) is horizontally and outwards fixedly connected with an L-shaped sliding column (11), a sliding through hole (18) is formed in the inner wall of the transmission case body (9), and the sliding column (11) is in sliding connection with the sliding through hole (18), the other end of the sliding column (11) is fixedly connected with the bottom end of the closed vibrating box body (1).

3. The environmentally friendly and efficient sizing screen of claim 1, wherein: the included angles of the inner bottom surface of the coarse grain sieve plate (2), the medium grain sieve plate (3) and the closed vibrating box body (1) and the horizontal direction are 4-8 degrees.

4. The environmentally friendly and efficient sizing screen of claim 1, wherein: the top ends of the coarse particle discharge port (4), the medium particle discharge port (5) and the fine particle discharge port (6) are connected with dust sealing curtains (19).