CN213059311U

CN213059311U - Powder screen cloth unloader and powder auxiliary agent dense phase pneumatic conveying system

Info

Publication number: CN213059311U
Application number: CN202021865944.2U
Authority: CN
Inventors: 张国华; 朱爱云; 张香芝
Original assignee: Zhejiang Zhidi Intelligent Equipment Technology Co ltd
Current assignee: Zhejiang Zhidi Intelligent Equipment Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-27
Anticipated expiration: 2030-08-31

Abstract

The utility model relates to a powder screen blanking device and a powder auxiliary agent dense-phase pneumatic conveying system, which comprises a blanking bin, a screening device and a storage bin which are arranged from top to bottom in sequence; the bottom of the blanking bin is provided with a first blanking port; the screening device comprises a left screen plate and a right screen plate which are sequentially arranged from left to right, at least one auxiliary blanking device for crushing agglomerates to assist blanking is arranged on the left screen plate and the right screen plate away from a blanking gap, and a plurality of screen holes for screening powder are arranged on the left screen plate and the right screen plate close to the blanking gap; the upper end of the storage bin is of an open structure, the bottom of the storage bin is provided with a second feed opening, and the front side wall is provided with a material receiving device for receiving the caking. The utility model provides a powder screen cloth unloader and powder auxiliary agent dense phase pneumatic conveying system easily operates, pulverizes the powder of caking, solves the problem that the storage silo of unloading in-process blockked up.

Description

Powder screen cloth unloader and powder auxiliary agent dense phase pneumatic conveying system

Technical Field

The utility model relates to a printing and dyeing processing field especially relates to a powder screen cloth unloader and powder auxiliary agent dense phase pneumatic conveying system.

Background

The blanking device is common equipment in the chemical production process, and is one of the more indispensable devices of blanking machine especially for the production of powder materials. The blanking device in the prior art is often single in function and can only be used for collecting and transporting materials. In the case of powder materials, caking often occurs during production and storage. In the dyeing process, the agglomerated powder can affect the dissolution of the powder and the dyeing quality. In the existing dyeing process, the powder bag is moved to the upper part of the storage bin in a dragging and hanging mode, and then the powder falls to the storage bin after the lower part of the powder bag is cut by a knife. The mode can not control the feeding speed of the powder and can not treat the agglomerated powder, and the blockage of the storage bin is easily caused under the influence of air humidity.

SUMMERY OF THE UTILITY MODEL

In order to solve the not enough of prior art, the utility model provides a powder screen cloth unloader and powder auxiliary agent dense phase pneumatic conveying system pulverizes the powder of caking, filters the caking that is difficult to pulverize, solves the storage silo jam problem of unloading in-process. In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a powder screen blanking device comprises a blanking bin, a screening device and a storage bin which are sequentially arranged from top to bottom; the bottom of the blanking bin is provided with a first blanking port; the screening device comprises a left screen plate and a right screen plate which are sequentially arranged from left to right, the left screen plate inclines forwards from left to right and from back to front, the right screen plate inclines forwards from right to left and from back to front, a blanking gap is formed between the right end of the left screen plate and the left end of the right screen plate, and the blanking gap is arranged above the storage bin and below the first blanking port; the parts of the left sieve plate and the right sieve plate, which are far away from the blanking gap, are provided with at least one auxiliary blanking device for crushing agglomerates to assist blanking, and the parts of the left sieve plate and the right sieve plate, which are close to the blanking gap, are provided with a plurality of sieve pores for sieving powder; the storage silo upper end is open structure, and the bottom is provided with the second feed opening, the unloading clearance front end put in the storage silo and with the storage silo before be formed with a gap that is used for the whereabouts caking between the lateral wall, be provided with the receiving device who is used for catching the caking before the storage silo below the gap on the lateral wall.

Furthermore, the auxiliary blanking device comprises a second cylinder, a scraper and a connecting rod for connecting the second cylinder and the scraper, the second cylinder is fixed on the left sieve plate or the right sieve plate, and the second cylinder pushes the scraper to reciprocate relative to the blanking gap through the connecting rod; preferably, the screening device is fixed above the storage bin through a plurality of support rods; preferably, the end of the spatula facing the blanking gap is serrated.

Furthermore, the material receiving device comprises a grid mesh and a material receiving sieve plate, the grid mesh is arranged on the front side wall of the storage bin, and the material receiving sieve plate is arranged below the grid mesh on the inner side of the front side wall of the storage bin; preferably, the grid mesh is movably arranged on the front side wall of the storage bin.

Furthermore, the receiving sieve plate inclines forwards from back to front, and the preferred inclination angle is 30-45 degrees.

Furthermore, the inclination angle of the left sieve plate and the right sieve plate from back to front is 30-45 degrees; preferably, the right sieve plate is inclined at an angle of 30-45 degrees from right to left, and the left sieve plate is inclined at an angle of 30-45 degrees from left to right.

Furthermore, the second feed opening is provided with a valve.

Further, a plurality of pressure sensors are uniformly arranged on the outer side of the bottom of the storage bin; preferably, the plurality of pressure sensors are uniformly arranged around the second feed opening.

Furthermore, a collecting bin is further arranged on the outer side of the front side wall of the storage bin and below the material receiving device.

Further, the outer top wall of the blanking bin is provided with a first cylinder, a conical valve is arranged on the first blanking port, the first cylinder is connected with the conical valve through a first fixing rod, a plurality of second fixing rods are further arranged on the first fixing rod, and the plurality of second fixing rods are annularly arranged by taking the first fixing rod as an axis.

A dense-phase pneumatic conveying system for a powder auxiliary agent comprises a blanking unit, a dense-phase pneumatic conveying unit, a receiving unit and a control unit; the blanking unit comprises a first screw blanking mechanism and a powder screen blanking device, the first screw blanking mechanism is arranged above the screening device and is connected with a first blanking port, a feeding port is arranged on a blanking bin of the powder screen blanking device, and a butterfly valve is arranged on the first blanking port; the dense-phase pneumatic conveying unit comprises a booster and a dense-phase pneumatic conveying pump connected with the second feed opening, the lower part of the dense-phase pneumatic conveying pump is connected with the booster, and the booster is connected with the material receiving unit through a conveying pipeline; the receiving unit comprises a receiving bin, the top of the receiving bin is connected with a conveying pipeline, a second screw blanking mechanism is arranged at the lower part of the receiving bin, and a pulse back-blowing device is arranged on the receiving bin; the control unit comprises a computer and a PLC programmable control system, and the control unit controls the working operation of the blanking unit, the dense-phase pneumatic conveying unit and the receiving unit.

Compared with the prior art, the utility model provides a powder screen cloth unloader and powder auxiliary agent dense phase pneumatic conveying system has following advantage:

1. the auxiliary blanking device is arranged to crush the lumps, and for the lumps which are difficult to crush, the lumps are collected through the material receiving device and the collecting bin, so that the problem of blockage of the storage bin in the blanking process is solved, and the influence on the dyeing quality caused by the inflow of the lumps into the dyeing system is avoided;

2. meanwhile, a conical valve is arranged on the blanking bin, so that the blanking speed can be controlled;

3. the storage silo is provided with pressure sensor, weighs the storage silo, and control unloading weight realizes accurate unloading.

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.

FIG. 1 is a schematic diagram of the overall structure of a powder screen blanking device;

FIG. 2 is a left side view of a powder screen blanking device;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an internal structural view of one embodiment of a blanking silo;

FIG. 5 is an overall structure diagram of a dense-phase pneumatic conveying system for powder additives;

FIG. 6 is a schematic view of the overall structure of the blanking unit and the dense-phase pneumatic conveying unit;

FIG. 7 is a schematic side view of the blanking unit and the dense phase pneumatic conveying unit;

FIG. 8 is a schematic view of the overall structure of the material receiving unit;

the references to up, down, left, right, front and back herein are made with reference to the up, down, left, right, front and back indicated in the drawings.

Description of reference numerals: 1-discharging a bin; 101-a first cylinder; 102-a first fixing bar; 103-a cone valve; 104-a second fixing bar; 105-a first feed opening; 2-a material sieving device; 201-right sieve plate; 202-left screen deck; 203-mesh screen; 204-blanking interval; 205-auxiliary blanking device; 2051-a second cylinder; 2052-connecting rod; 2053-spatula; 3, a storage bin; 4-a support bar; 5-a grid; 6-receiving sieve plate; 7-a pressure sensor; 8, collecting a bin; 9-a first support; 10-a feed inlet; 11-a first screw blanking mechanism; 12-dense phase pneumatic conveying pump; 13-a booster; 14-a second support; 15-a material receiving bin; 16-a pulse back-blowing device; 17-a second screw blanking mechanism; 18-conveying pipeline.

Detailed Description

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

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A powder screen blanking device is shown in figures 1-3 and comprises a blanking bin 1, a screening device 2 and a storage bin 3 which are arranged from top to bottom in sequence; the bottom of the blanking bin 1 is provided with a first blanking port 105; the screening device 2 comprises a left screening plate 202 and a right screening plate 201 which are sequentially arranged from left to right, wherein the left screening plate 202 inclines forwards from left to right and from back to front, preferably, the inclination angle from left to right is 30-45 degrees, and the inclination angle from back to front is 30-45 degrees; the right sieve plate 201 inclines forwards from right to left and from back, preferably, the inclination angle from right to front is 30-45 degrees, and the inclination angle from back to front is 30-45 degrees; a blanking gap 204 is formed between the right end of the left screen plate 202 and the left end of the right screen plate 201, and the blanking gap 204 is arranged above the storage bin 3 and below the first blanking port 105; the parts of the left screen plate 202 and the right screen plate 201 far away from the blanking gap 204 are provided with at least one auxiliary blanking device 205 for crushing lumps to assist blanking, and the parts of the left screen plate 202 and the right screen plate 201 near the blanking gap 204 are provided with a plurality of screen holes 203 for sieving powder; the auxiliary blanking device 205 comprises a second cylinder 2051, a scraper 2053 and a connecting rod 2052 for connecting the second cylinder 2051 and the scraper 2053, the second cylinder 2051 is fixed on the left sieve plate 202 or the right sieve plate 201, and the second cylinder 2051 pushes the scraper 2053 to reciprocate relative to the blanking gap 204 through the connecting rod 2052; preferably, the screening device 2 is fixed above the storage bin 3 through a plurality of support rods 4; preferably, the end of spatula 2053 facing blanking gap 204 is serrated.

The upper end of the storage bin 3 is of an open structure, the bottom of the storage bin is provided with a second feed opening, the second feed opening is provided with a valve, the front end of the feed gap 204 is arranged in the storage bin 3, a gap for falling the caking is formed between the front side wall of the storage bin 3 and the front end of the storage bin, and a material receiving device for receiving the caking is arranged on the front side wall of the storage bin 3 below the gap; a plurality of pressure sensors 7 are uniformly arranged on the outer side of the bottom of the storage bin 3; preferably, the plurality of pressure sensors 7 are uniformly arranged around the second feed opening. Pressure sensor 7 is connected to the industrial weighing instrument in the control electric cabinet, and the weighing instrument sends output to the shutoff of supplementary unloader 205 of PLC control, realizes automatic control.

The material receiving device comprises a grid 5 and a material receiving sieve plate 6, the grid 5 is arranged on the front side wall of the storage bin 3, and the material receiving sieve plate 6 is arranged below the grid 5 on the inner side of the front side wall of the storage bin 3; the grid 5 is movably arranged on the storage bin 3 through a slideway, so that the grid 5 can be drawn out from the side; the receiving sieve plate 6 inclines forwards from back, preferably, the inclination angle is 30-45 degrees; a collecting bin 8 is further arranged on the outer side of the front side wall of the storage bin 3 and below the material receiving device.

Fig. 4 is an embodiment of the blanking bin 1, wherein a first cylinder 101 is arranged on the top wall of the exterior of the blanking bin 1, a conical valve 103 is arranged on the first blanking port 105, the first cylinder 101 is connected with the conical valve 103 through a first fixing rod 102, a plurality of second fixing rods 104 are further arranged on the first fixing rod 102, and the plurality of second fixing rods 104 are annularly arranged with the first fixing rod 102 as an axis; the cone valve 103 is electrically connected with the PLC, the PLC controls the cone valve 103 to be turned off, and when the weighing instrument detects enough weight, the weighing instrument sends output to the PLC to control the cone valve 103 to be turned off.

During the use, the powder falls into on sieve material device 2 through first feed opening 105, and the powder of non-caking can directly fall into storage silo 3 through unloading clearance 204 in, and the powder of caking stops on right sieve 201 or left sieve 202, then rolls the caking through the reciprocating motion of spatula 2053, and the caking that pulverizes falls into storage silo 3 through sieve mesh 203, and the caking that can't pulverize falls to on connecing material sieve 6, and rethread grid 5 falls into to collection bin 8.

A dense-phase pneumatic conveying system for powder additives is shown in figures 5 to 8 and comprises a blanking unit, a dense-phase pneumatic conveying unit, a receiving unit and a control unit; the blanking unit comprises a first screw blanking mechanism 11 and a powder screen blanking device, the first screw blanking mechanism 11 is arranged above the screening device 2 and is connected with a first blanking port 105, and preferably, the first screw blanking mechanism 11 is of a double-screw structure; a feeding hole 10 is formed in a feeding bin 1 of the powder screen feeding device, and a butterfly valve is arranged on a first feeding hole 105; the blanking bin 1, the screening device 2 and the storage bin 3 are all arranged on a first bracket 9 for fixing; the second feed opening of the powder screen cloth feeding device is provided with a valve, a plurality of pressure sensors 7 are arranged around the second feed opening, the pressure sensors 7 are electrically connected with an electronic scale, the electronic scale is electrically connected with a control unit, the first screw feeding mechanism 11 is electrically connected with the control unit, and when the electronic weighing reaches a preset weight, the control unit controls the first screw feeding mechanism 11 to be turned off, so that automatic and accurate weighing is realized.

The dense-phase pneumatic conveying unit comprises a booster 13 and a dense-phase pneumatic conveying pump 12 connected with the second feed opening, the lower part of the dense-phase pneumatic conveying pump 12 is connected with the booster 13, the booster 13 is provided with two inlets and an output opening, the output opening is connected with a conveying pipeline 18, one of the two inlets is connected with the dense-phase pneumatic conveying pump 12 to convey materials, and the other inlet is connected with an air source to cut off the materials to form a material column, so that a certain solid-gas ratio is formed in the material conveying process, the conveying distance is prolonged, and the conveying stability is ensured; the other end of the conveying pipeline 18 is connected with a material receiving unit; the dense-phase pneumatic conveying unit further comprises an air storage tank, a freeze dryer and an air compressor which are connected in sequence through pipelines, and the dense-phase pneumatic conveying pump 12 is connected with the air storage tank through a pipeline. Compressed air is generated by an air compressor and is cooled and dried by a freeze dryer, the dried compressed air is stored in an air storage tank, when a conveying program needs to be started, the control unit controls the corresponding switch valve bodies to convey gas into the dense-phase pneumatic conveying pump 12, and the powder auxiliary agent is conveyed to the material receiving unit through the conveying pipeline 18 under the action of fluidization. The material receiving unit comprises a material receiving bin 15, the material receiving bin 15 is arranged on a second support 14 and fixed, the top of the material receiving bin 15 is connected with a conveying pipeline 18, a pulse back-blowing device 16 is arranged on the material receiving bin 15, a second screw rod discharging mechanism 17 is arranged on the lower portion of the material receiving bin 15, and powder auxiliaries conveyed to the material receiving bin 15 are injected into a batching device through the second screw rod discharging mechanism 17.

The control unit comprises a computer and a PLC programmable control system, a corresponding control program can be written in the programmable controller according to actual conditions, the device switch and the valve body are electrically connected with the control unit, and the automatic management of the whole powder auxiliary agent dense-phase pneumatic conveying system is realized through the computer.

The powder screen cloth discharging device protected by the utility model is easy to operate, the caking which is difficult to crush is crushed by the auxiliary discharging device 205, and the caking is collected by the material receiving device and the collecting bin 8, so that the problem of blocking of the storage bin 3 in the discharging process is solved, and the caking is prevented from flowing into the dyeing system to influence the dyeing quality; meanwhile, the conical valve 103 on the blanking bin 1 is used for controlling the blanking speed, so that the problems of excessive blanking and inaccurate blanking are avoided; meanwhile, the storage bin 3 is provided with the pressure sensor 7, the storage bin 3 is weighed, the blanking weight is controlled, and accurate blanking is further realized. The powder screen blanking device can be applied to a dense-phase pneumatic conveying system of the powder auxiliary agent to crush the powder auxiliary agent, so that the quality of powder conveyed to a dyeing system is ensured, and the final dyeing quality is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. The utility model provides a powder screen cloth unloader which characterized in that: comprises a blanking bin (1), a screening device (2) and a storage bin (3) which are arranged from top to bottom in sequence; the bottom of the blanking bin (1) is provided with a first blanking port (105); the screening device (2) comprises a left screen plate (202) and a right screen plate (201) which are sequentially arranged from left to right, the left screen plate (202) is inclined forwards from left to right and from back to front, the right screen plate (201) is inclined forwards from right to left and from back to front, a blanking gap (204) is formed between the right end of the left screen plate (202) and the left end of the right screen plate (201), and the blanking gap (204) is arranged above the storage bin (3) and below the first blanking port (105); the parts of the left sieve plate (202) and the right sieve plate (201) far away from the blanking gap (204) are provided with at least one auxiliary blanking device (205) for crushing caking to assist blanking, and the parts of the left sieve plate (202) and the right sieve plate (201) near the blanking gap (204) are provided with a plurality of sieve holes (203) for sieving powder; the upper end of the storage bin (3) is of an open structure, a second feed opening is formed in the bottom of the storage bin, a gap used for falling of a caking is formed between the front end of the feed gap (204) and the front side wall of the storage bin (3), and a material receiving device used for receiving the caking is arranged on the front side wall of the storage bin (3) below the gap.

2. The powder screen blanking device of claim 1, wherein: the auxiliary blanking device (205) comprises a second cylinder (2051), a scraper (2053) and a connecting rod (2052) for connecting the second cylinder (2051) with the scraper (2053), the second cylinder (2051) is fixed on the left sieve plate (202) or the right sieve plate (201), and the second cylinder (2051) pushes the scraper (2053) to reciprocate relative to the blanking gap (204) through the connecting rod (2052).

3. The powder screen blanking device of claim 1, wherein: the screening device (2) is fixed above the storage bin (3) through a plurality of support rods (4).

4. The powder screen blanking device of claim 2, wherein: one end of the scraper (2053) facing the blanking gap (204) is serrated.

5. The powder screen blanking device of claim 1, wherein: the material receiving device comprises a grid mesh (5) and a material receiving sieve plate (6), the grid mesh (5) is arranged on the front side wall of the storage bin (3), and the material receiving sieve plate (6) is arranged below the grid mesh (5) on the inner side of the front side wall of the storage bin (3).

6. The powder screen blanking device of claim 5, wherein: the grid net (5) is movably arranged on the front side wall of the storage bin (3).

7. The powder screen blanking device of claim 5, wherein: the material receiving sieve plate (6) inclines forwards from the back.

8. The powder screen blanking device of claim 7, wherein: the inclination angle of the material receiving sieve plate (6) is 30-45 degrees.

9. The powder screen blanking device of claim 1, wherein: the angle of inclination of the left sieve plate (202) and the right sieve plate (201) from back to front is 30-45 degrees.

10. The powder screen blanking device of claim 9, wherein: the inclination angle of the right sieve plate (201) from right to left is 30-45 degrees, and the inclination angle of the left sieve plate (202) from left to right is 30-45 degrees.

11. The powder screen blanking device of claim 1, wherein: and the second feed opening is provided with a valve.

12. The powder screen blanking device of claim 11, wherein: a plurality of pressure sensors (7) are uniformly arranged on the outer side of the bottom of the storage bin (3).

13. The powder screen blanking device of claim 12, wherein: the pressure sensors (7) are uniformly arranged around the second feed opening.

14. The powder screen blanking device of claim 1, wherein: a collecting bin (8) is arranged at the outer side of the front side wall of the storage bin (3) and below the material receiving device.

15. The powder screen blanking device of claim 1, wherein: lower feed bin (1) outside roof is provided with first cylinder (101), be provided with conical valve (103) on first feed opening (105), first cylinder (101) are connected with conical valve (103) through first dead lever (102), still be provided with many second dead levers (104) on first dead lever (102), and a plurality of second dead levers (104) use first dead lever (102) to be the annular setting as the axle center.

16. A dense-phase pneumatic conveying system for powder auxiliaries is characterized in that: comprises a blanking unit, a dense-phase pneumatic conveying unit, a receiving unit and a control unit; the blanking unit comprises a first screw blanking mechanism (11) and the powder screen blanking device of any one of claims 1 to 8, wherein the first screw blanking mechanism (11) is arranged above the screening device (2) and is connected with a first blanking port (105), a feeding port (10) is arranged on a blanking bin (1) of the powder screen blanking device, and a butterfly valve is arranged on the first blanking port (105); the dense-phase pneumatic conveying unit comprises a booster (13) and a dense-phase pneumatic conveying pump (12) connected with the second feed opening, the lower part of the dense-phase pneumatic conveying pump (12) is connected with the booster (13), and the booster (13) is connected with the material receiving unit through a conveying pipeline (18); the material receiving unit comprises a material receiving bin (15), the top of the material receiving bin (15) is connected with a conveying pipeline (18), a second screw rod blanking mechanism (17) is installed at the lower part of the material receiving bin (15), and a pulse back-blowing device (16) is installed on the material receiving bin (15); the control unit comprises a computer and a PLC programmable control system, and the control unit controls the working operation of the blanking unit, the dense-phase pneumatic conveying unit and the receiving unit.