CN212550352U

CN212550352U - Screening device

Info

Publication number: CN212550352U
Application number: CN202020713699.7U
Authority: CN
Inventors: 马志浩
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2021-02-19
Anticipated expiration: 2030-04-30

Abstract

The utility model provides a screening device, which comprises a screening barrel with an accommodating cavity and at least one screening unit which can rotate in the accommodating cavity due to external force drive, wherein the accommodating cavity is divided into at least two screening cavities by the screening unit; the top of the screening barrel is provided with a feed inlet for feeding materials into the containing cavity, and the peripheral wall of the screening barrel is provided with a discharge outlet corresponding to each screening cavity; a material guide plate for guiding the material to flow out of the containing cavity is arranged corresponding to each discharge hole. Screening plant, the material that the size fraction is big can stay in the screening intracavity that corresponds because of the interception of screening unit, the material that the size fraction is little then passes the screening unit and gets into next screening chamber, the material after the screening can be outside the discharge gate discharge screening bucket through corresponding under the effect of stock guide to realize the screening of material, this screening plant's simple structure, sealed design, screening is effectual, has better popularization meaning.

Description

Screening device

Technical Field

The utility model relates to a screening equipment technical field, in particular to screening plant.

Background

In the prior art, the material to be screened is usually screened by using a screening device, wherein a screening screen plate is a key component for realizing the screening function, and the material to be screened can pass through the screening screen plate in a vibration state so as to be screened according to the size of the size fraction.

Although carrying out the material screening through the mode of vibrations and can satisfying the user demand of material screening basically, because the structure of screening equipment sets up unreasonablely, lead to the screening effect poor, so, how to improve current screening equipment to improve the screening effect to the material, the technical problem that technical staff in the field need to solve urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a screening plant to improve the screening effect to the material.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a screening device comprising:

the screening barrel is internally provided with a containing cavity, at least one screening unit which can rotate under the drive of external force is arranged in the containing cavity, and the containing cavity is divided into at least two screening cavities by the screening unit; a feed inlet for feeding materials into the containing cavity is formed in the top of the screening barrel, discharge ports are formed in the peripheral wall of the screening barrel corresponding to the screening cavities respectively, and the materials penetrate through the screening unit from top to bottom and are intercepted in the corresponding screening cavities;

the material guide plate corresponds to the rotating path of the material, is arranged on the inner wall surface of the shell, and extends into the containing cavity to guide the material out of the discharge hole.

Furthermore, the cavity where the screening unit is located is provided with a space for the screening unit to rotate in the cavity in a sealed mode.

Further, the screening unit comprises a screening body capable of rotating around the axis of the screening body.

Furthermore, the screening body is a screening net or a screening plate or a screening frame with screening holes.

Furthermore, annular bulges which are respectively arranged on two sides of the screening unit are arranged on the inner wall surface of the containing cavity, and a plurality of rolling parts are arranged between the annular bulges and the screening unit.

Furthermore, an outer frame is arranged on the peripheral wall of the sieve body, and a sealing body is arranged on the peripheral wall of the outer frame to limit the materials from falling downwards between the outer frame and the inner wall surface of the accommodating cavity.

Further, the outer frame is higher than the sieve body.

Furthermore, the guide plate is arranged on the peripheral wall of the screening barrel in a pivoting mode corresponding to the discharge port, and the guide plate can rotate under the driving of external force so as to lead the materials out of the screening cavity.

Furthermore, the sieve body is planar or is in a curved surface shape protruding towards the material inflow direction.

Furthermore, the sieve body is provided with a concave part which is positioned in the middle of the sieve body and is arranged in a concave mode, and a blanking port is arranged at the bottom of the concave part.

Compared with the prior art, the utility model discloses following advantage has:

(1) screening plant, install in the screening bucket rotatoryly through setting up the screening unit, when the material flows through the screening unit, the material that the size fraction is big can be because of the screening intracavity that corresponds is stayed in the interception of screening unit, the material that the size fraction is little then passes the screening unit and gets into next screening chamber, outside the material after the screening was discharged the screening bucket via the discharge gate after the guide of stock guide to realize the screening of material, this screening plant's simple structure, screening effect is good, has better screening efficiency.

(2) The cavity and the screening unit are in a rotary body shape, so that the rotary arrangement of the screening unit is facilitated, the cavity can be well separated by the screening unit, and good conditions are created for screening materials.

(3) The screening body is adopted for filtering, so that the preset screening effect can be achieved, and the rotation of the screening body is facilitated.

(4) Screening net, screening board or screening frame all have the mature advantage of structure, can realize the screening to different grade type materials.

(5) Through setting up annular protrusion and rolling member, can increase the bearing capacity of casing to the screening unit, simultaneously, adopt rolling friction to increase the steadiness to effectively reduce the frictional force of screening unit in rotatory in-process.

(6) Set up the seal and do benefit to the leakproofness that improves the outline at rotatory in-process and hold the intracavity portion within a definite time, and then improve the screening effect to the material.

(7) The outer frame is higher than the setting of the screening body, prevents the run-out of material, reduces the chance that the material card is between the screening body and the container internal face to reduce the accident rate, do benefit to and improve life, increase material screening time simultaneously.

(8) The screening body of the curved surface structure is adopted, materials in the corresponding screening cavity can be screened on the screening body by means of centrifugal force, the materials flow to the periphery, and the materials are discharged from the screening cavity.

(9) Screening to the same but different material of weight of size fraction can be realized through setting up the depressed part to separate the material.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a screening device according to a first embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a screening device according to a first embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of a screening body according to a first embodiment of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

fig. 5 is a schematic structural view of another type of material guiding plate according to the second embodiment of the present invention;

fig. 6 is a schematic structural view of a sieve body according to a third embodiment of the present invention;

description of reference numerals:

1-body, 102-material guide plate, 103-discharge hole;

2-end cover, 201-feed inlet;

3-driving gear, 4-driven gear;

6-a material receiving box, 601-a material discharging pipe;

7-a stop cap, 8-a sealing body and 9-a rotating shaft;

10-a screen body, 1001-a concave part and 1002-a blanking port;

11-first motor, 13-outer frame, 14-inner frame.

15-second motor, 16-linkage shaft.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

The embodiment relates to a screening device for screening materials with different size fractions. The screening device comprises a screening barrel with a containing cavity and at least one screening unit capable of rotating in the containing cavity due to external force driving, wherein the containing cavity is divided into at least two screening cavities by the screening unit. And the top of the screening barrel is provided with a feed inlet for feeding materials into the containing cavity, and the peripheral walls of the screening barrel are respectively provided with a discharge outlet corresponding to each screening cavity. Corresponding to the rotating path of the material, a material guide plate is arranged on the inner wall surface of the shell and extends from the discharge hole to the containing cavity so as to guide the screened material out of the discharge hole.

Based on the above general structural principles, the present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. An exemplary structure of the screening device of the present embodiment is shown in fig. 1 and fig. 2, the screening barrel may be installed on a frame, the screening barrel specifically includes a barrel-shaped body 1, and an end cover 2 detachably installed at the top opening of the body 1, and the feeding port is specifically disposed on the end cover 2. In order to facilitate the material to be screened to enter the cavity, the end cover 2 is provided with the feed port 201 in this embodiment, and the cross-sectional area of the feed port 201 is reduced from top to bottom along the height direction, so as to improve the feeding effect of the material. Here, the end cap 2 may be mounted on the body 1 using a fastening structure such as a screw or the like in the related art.

The screening units are three and are arranged at intervals along the height direction of the containing cavity, and each screening unit and the revolving body which is coaxially arranged in the containing cavity are beneficial to the rotary arrangement of the screening units, so that the screening units can well separate the containing cavity, and good conditions are created for screening materials. Of course, the number of screening units in the screening device may also be adapted according to the specific screening requirements.

The specific structure of the screening unit in this embodiment is shown in fig. 4, and it includes a screening body 10 that can rotate around its own axis, and an outer frame 13 that extends downward is provided on the outer peripheral wall of the screening body 10. In order to facilitate the installation of the sieving body 10 on the rotating shaft 9, a mounting hole is formed in the middle of the sieving body 10, and an inner frame 14 is arranged at the mounting hole. Here, the sieve body 10 is used for filtering, so that a predetermined sieving effect can be achieved, and the rotation of the sieve body 10 is facilitated. The effect of the screen part 10 in this embodiment is to realize the screening of material for the material that the size fraction is great blocks at the screening intracavity that corresponds, and the material that the size fraction is less drops downwards and sieves once more.

As shown in fig. 3, the outer frame 13 in this embodiment is higher than the sieving body 10, which is beneficial to improving the sealing performance between the outer frame 13 and the inside of the cavity during the rotation process, thereby improving the sieving effect on the material. In addition, the sieve body 10 is in a plane shape or a curved surface shape protruding towards the material inflow direction, wherein the curved surface shape can sieve the material in the corresponding sieving cavity on the sieve body 10 by means of centrifugal force, and the material flows to the periphery, so that the material is discharged from the discharge hole 103, and the using effect is better.

The screening body 10 in this embodiment may be specifically a screening net or a screening plate or a screening frame having screening holes, and the screening of the materials of different size fractions is realized through the aperture of the screening holes. Screening net, screening board or screening frame all have the mature advantage of structure, can realize the screening to different grade type materials. The mesh number of the screen components 10 on the three screening units is sequentially increased from top to bottom, and by the arrangement, the materials can be classified and screened according to the particle size of the materials, so that the screening effect and the applicability of the materials are improved.

In this embodiment, the power driving the sieving units to rotate comes from the first motor 11 installed at the bottom of the sieving barrel, the power output end of the first motor 11 is connected with the rotating shaft 9, the three sieving units are installed on the rotating shaft 9 through the inner frames thereon, and are driven by the first motor 11 to rotate around the axis of the rotating shaft 9, and the sieving effect of the material on the sieving units is improved through rotation, wherein, in order to ensure the sealing performance between the rotating shaft 9 and the sieving barrel during rotation, a shaft seal is further installed on the rotating shaft 9.

In addition, in order to improve the use effect of the sieving unit in the rotating process, in this embodiment, as shown in fig. 3 and 4, a sealing body 8 is arranged on the outer circumferential wall of the outer annular advance to limit the material from sliding downwards between the outer frame 13 and the inner wall surface of the accommodating cavity. In a specific structure, as shown in fig. 4, the sealing body 8 in this embodiment specifically includes an adhesive layer adhered and fixed on the outer peripheral wall surface of the outer frame 13, and a plurality of bristles disposed on the adhesive layer and extending outward in the radial direction of the screen body 10, and the bristles are a plurality of groups disposed in the height direction of the adhesive layer. Here, a better sealing effect can also be achieved without affecting the rotation of the sieving unit by the bristles. Of course, the sealing body 8 in this embodiment may be made of sponge in addition to bristles, and when sponge is used, sponge may be adhered to the outer frame 13.

In this embodiment, the inner wall surface of the cavity is provided with annular protrusions respectively arranged at the upper and lower sides of each sieving unit, and a plurality of rolling members are arranged between the annular protrusions and the sieving unit. In a specific structure, a support is arranged on the side face, facing the corresponding screening unit, of the annular bulge, and the rolling piece is a ball positioned and installed on the support. The outer frame is provided with a slideway for the ball to slide. Here, through setting up cyclic annular arch and rolling member, can increase the bearing capacity of screening bucket to the screening unit, simultaneously, adopt rolling friction to increase the steadiness to effectively reduce the frictional force of screening unit in rotatory process, and then reduce the wearing and tearing in the use. The material guide plate 102 is located above the limit protrusion.

In this embodiment, in order to discharge the screened materials from the discharge hole 103, as shown in fig. 3, a blocking cap 7 disposed corresponding to the feed hole 201 is further installed at the top end of the rotating shaft 9, the blocking cap 7 is in a conical shape with a tip portion disposed upward, and the materials entering from the feed bin 201 flow down on the periphery of the screening unit more easily due to the blocking of the blocking cap 7, so as to facilitate screening and discharging. Because of the rotation of screening unit, the material of screening intracavity can take place centrifugal motion to flow the outer peripheral face that is close to the screening unit easily, and then do benefit to and discharge from discharge gate 103.

In order to facilitate the flow of the material in the lowermost screening chamber out of the corresponding outlet port 103, in this embodiment, as shown in fig. 3, the bottom surface of the receiving chamber is arranged to be inclined downwards towards the corresponding outlet port 103. It should be noted that, in addition to the arrangement form in fig. 1, the positions of the discharge ports 103 may also be adjusted according to specific use requirements, for example, the discharge ports 103 are arranged in a staggered manner in the circumferential direction of the sieving barrel.

In addition, the screening barrel can be connected with a dust removal device to intensively collect dust generated in the screening barrel, so that pollution caused by dust discharge is effectively prevented. In addition, for the solid recovery of particles, on the premise of not influencing the state of the particles, a water spraying device can be arranged at the top of the accommodating cavity so as to humidify the materials and prevent dust on the materials from being generated. Furthermore, an acoustic insulation layer can be arranged outside the screening barrel, and the acoustic insulation layer can adopt acoustic insulation materials in the prior art to reduce noise of the screening device when the screening device is used.

In addition, as shown in fig. 1 to 3, in order to collect the material discharged from the sieving chamber, in the embodiment, a material receiving box 6 is disposed on the outer peripheral wall of the sieving barrel, and the discharge port is disposed corresponding to the top of the material receiving box 6, so that the material guided out by the material guide plate falls to the bottom of the material receiving box 6. A discharge pipe 601 is also arranged on the material receiving box 6, so that the material in the material receiving box 6 can be conveyed backwards continuously.

The screening plant when using, put into feeding storehouse 201 with the material that waits to screen to start first motor 11, screening plant is in the screening state, can be with the leading-in case 6 that connects of the material of screening intracavity at the in-process stock guide of screening, thereby accomplish whole screening process.

The screening device in this embodiment installs in the screening bucket through the screening unit rotatoryly, when the material flows through the screening unit, the material that the size fraction is big can be because of the interception of screening unit stays in the screening intracavity that corresponds, the material that the size fraction is little then passes the screening unit and gets into next screening chamber, the material after the screening can enter into outside the discharge gate 103 discharge screening bucket via the stock guide, thereby realize the screening of material, this screening device's simple structure, can realize the screening of limit feeding limit, better screening efficiency has.

Example two

The screening device of this embodiment is substantially the same as the screening device of the first embodiment, except that the material guiding plate 102 is different in material guiding form. In this embodiment, as shown in fig. 5, the material guiding plate 102 is pivotally disposed on the outer peripheral wall of the sieving barrel, and the material guiding plate 102 can be driven by an external force to rotate so as to guide the material out of the sieving cavity.

The material guiding plate 102 is pivotally disposed on the outer peripheral wall of the sieving barrel, and the material guiding plate 102 can be driven by external force to rotate so as to guide the material out of the sieving cavity. Here, the bottom edge of the discharge opening 103 should meet the requirements for discharge of material from the screening chamber. In a specific structure, as shown in fig. 1 to 3, in this embodiment, the discharge port 103 has a uniform projection in the height direction of the sieving barrel, the material guide plate 102 is specifically an arc shape arranged corresponding to the discharge port 103, linkage shafts 16 are connected outside the four arc plates, a second motor 15 is installed on the end cover 2, and a power output end of the second motor 15 is connected with the top end of the linkage shaft 16. To facilitate the installation of the second motor 15, an installation block 202 is provided on the end cap 2, and the second motor 15 is specifically installed on the installation block 202. With such an arrangement, under the driving of the second motor 15, each material guiding plate 102 can rotate around the axis of the linkage shaft 16, and because the material guiding plates 102 are arc-shaped plates, the material in the screening chamber can be discharged out of the screening chamber due to the rotation of the material guiding plates 102. Here, it should be noted that the direction of rotation of the linkage shaft 16 is opposite to the direction of rotation of the shaft 9 to facilitate the discharge of the material. The discharging mode can realize the discharge of most materials in the screening cavity. Of course, the discharge of the material in the screening chamber can also be performed by other means, as long as the discharge of the material in the screening chamber is satisfactory.

In order to facilitate the flow of the material in the lowermost screening chamber out of the corresponding outlet port 103, in this embodiment, as shown in fig. 3, the bottom surface of the receiving chamber is arranged to be inclined downwards towards the corresponding outlet port 103. It should be noted that the positions of the discharge ports 103 may also be adjusted according to specific use requirements, for example, the discharge ports 103 are arranged alternately in the circumferential direction of the sieving barrel, and thus, each material guide plate 102 needs to be driven by a separate second motor 15.

In this embodiment, the material on the screening body 10 can be continuously guided out of the cavity by the rotating material guide plate 102, so that the screening efficiency is high.

EXAMPLE III

The screening device in this embodiment is substantially the same as the screening device in the first embodiment, and is different in the shape and driving form of the screening body, and the discharging manner. Referring to fig. 6, the screen body 10 in this embodiment has a concave portion 1001 in the middle thereof and is recessed, and a blanking opening 1002 is provided at the bottom of the concave portion 1001. To separate materials of the same size but different weights during rotation of the screen 10. Due to the centrifugal action, lighter weight material can flow into the recess 1001 and then be input into the screening drum through the blanking port 1002. The recess 1001 is shaped like a truncated cone with a downward tip, which facilitates separation and discharge of the material.

In this embodiment, the driven gear 4 is installed outside the blanking port 1002, the driving gear 3 in transmission connection with the driven gear 4 is installed in the cavity corresponding to the driven gear 4, and the first motor 11 is installed in the sieving barrel to drive the driving gear 3 to rotate, so that the materials are discharged without affecting the rotation of the sieving body 10.

The screening plant described in this embodiment can realize screening the material of the same particle size different weight, has higher screening efficiency.

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. A screening device, comprising:

the screening barrel is internally provided with a containing cavity, at least one screening unit which can rotate under the drive of external force is arranged in the containing cavity, and the containing cavity is divided into at least two screening cavities by the screening unit; a feed inlet (201) for feeding materials into the containing cavity is formed in the top of the screening barrel, discharge outlets (103) are formed in the peripheral wall of the screening barrel corresponding to the screening cavities respectively, and the materials penetrate through the screening unit from top to bottom and are intercepted in the corresponding screening cavities;

and the material guide plate (102) is arranged on the inner wall surface of the screening barrel and extends into the containing cavity corresponding to the rotating path of the material so as to guide the material out of the material outlet (103).

2. A screening device according to claim 1, wherein: the containing cavity at the position of the screening unit is provided with a space for the screening unit to rotate in the containing cavity in a sealing mode.

3. A screening device according to claim 2, wherein: the screening unit comprises a screening body (10) which can rotate around the axis of the screening unit.

4. A screening device according to claim 3, wherein: the screening body (10) is a screening net or a screening plate or a screening frame with screening holes.

5. A screening device according to claim 3, wherein: annular bulges which are respectively arranged on two sides of the screening unit are arranged on the inner wall surface of the containing cavity, and a plurality of rolling parts are arranged between the annular bulges and the screening unit.

6. A screening device according to claim 3, wherein: an outer frame (13) is arranged on the peripheral wall of the sieve body (10), and a sealing body (8) is arranged on the peripheral wall of the outer frame (13) to limit the material from sliding downwards between the outer frame (13) and the inner wall surface of the accommodating cavity.

7. A screening device according to claim 6, wherein: the outer frame 913 is higher than the screen body (10).

8. A screening device according to claim 3, wherein: the material guide plate (102) is pivoted on the outer peripheral wall of the screening barrel corresponding to the discharge hole (103), and the material guide plate (102) can rotate under the driving of external force so as to guide the material out of the screening cavity.

9. A screening device according to any one of claims 4 to 8, wherein: the sieve body (10) is planar or is in a curved surface shape protruding towards the material inflow direction.

10. A screening device according to any one of claims 4 to 8, wherein: the screen body (10) is provided with a concave part (1001) which is positioned in the middle of the screen body and is arranged in a concave mode, and a blanking port (1002) is arranged at the bottom of the concave part (1001).