TWM576076U - Screening device - Google Patents

Abstract

The present invention relates to a screening device comprising a multi-frequency screen, a dust remover, an air inlet duct and a clean air duct, wherein the multi-frequency screen further comprises a screen box and a screen core, the screen core being located inside the screen box, The screen box and the screen core are independently disposed, the dust collector is located at the rear end of the multi-frequency screen, one end of the air inlet duct is connected with the front end of the multi-frequency screen, and the other end is connected to the air inlet of the dust collector. Connected, one end of the clean air pipe is connected to the clean air outlet of the dust remover, one end is connected to the outside, and the dust collector is disposed at the lower end of the dust remover. The new technical solution is adopted, which can meet environmental protection requirements, and has a small occupied area, convenient installation and debugging, and can save air volume.

Description

Screening device

The invention relates to the field of screening technology, in particular to a screening device.

Dry screening is a major process in the sorting industry and is widely used in sand and gravel, construction waste, mining, metallurgical and coal industries. But dry screening directly brings dust pollution problems. At present, centralized dust removal is used to solve the problem of dust spillage, or it is not treated directly in the open air.

As the country's environmental protection requirements are getting higher and higher, the emission concentration is increased from 30mg/m3 to less than 10mg/m3. The original centralized dust removal and open-air direct discharge can not meet the requirements. Originally, the centralized dust collector needs to be modified to replace the dust collector, or the centralized dust collector that meets the requirements can be directly replaced. If there is no dust removal equipment, it is necessary to add a centralized dust collector that meets the requirements.

However, the transformation and construction of centralized dust collectors have problems such as high cost, difficult transformation, large floor space, and low utilization of air volume.

In order to solve the problems existing in the prior art, the present embodiment provides a screening device capable of meeting environmental protection requirements, and has a small footprint, convenient installation and debugging, and can save air volume.

According to an aspect of the present invention, a screening apparatus includes a multi-frequency screen, a dust remover, an air inlet duct, and a clean air duct, wherein the multi-frequency screen further includes a screen box and a screen core, wherein the screen core is located Inside the screen box, the screen box and the screen core are independently arranged, the dust collector is located at the rear end of the multi-frequency screen, one end of the air inlet duct is connected with the front end of the multi-frequency screen, and the other end is The air inlet of the dust remover is connected, one end of the clean air pipeline is connected with the clean air outlet of the dust remover, one end is connected to the outside, and the lower end of the dust remover is provided with a dust removal ash outlet.

Further, one end of the air inlet duct communicates with a front end of the screen box of the multi-frequency screen.

Further, a feed bin is further included, and the feed bin is located on the multi-frequency screen and communicates with the feed port of the multi-frequency screen.

Further, the utility model further includes an oversize belt, and an upper portion of the front end of the multi-frequency screen is provided with an oversize outlet, and the sieve outlet is connected to the sieve belt via a chute.

Further, a bottom belt is disposed, and a lower portion of the front end of the multi-frequency screen is provided with a bottom outlet, and the bottom outlet is connected to the undersize belt via a chute.

Further, the dust ash outlet is connected to the undersize belt via a chute.

Further, a programmable logic controller is further included, and the programmable logic controller is respectively connected to the multi-frequency screen and the dust remover.

The technical solution provided by the embodiment of the present invention may include the following beneficial effects: 1. Since the dust collector is installed at the rear end of the multi-frequency screen, the rear end of the multi-frequency screen is generally a cloth or a blind plate area, which does not occupy space, and does not add dust. The space occupied by the device is equivalent; 2. Because the screen box of the multi-frequency screen is not vibrated, it can be directly connected with the dust collector, and the installation and debugging are convenient; 3. The dust remover can solve the screening device and the blank material under the screening device. The dust overflow problem of the point; 4, the dust collector and the multi-frequency screen are integrated, the distance from the dust removal point to the air inlet of the dust collector is the shortest, which can solve the problem of waste of air volume caused by the long pipeline; 5, the multi-frequency screen and the dust collector can be used The Programmable Logic Controller (PLC) controls the start and stop, solves the problem that the multi-frequency screen is suspended, and the air volume is wasted due to the continuous operation of the precipitator; 6. The dust collected by the dust collector is directly directed to the under-dash belt, and does not need to be cleaned regularly. Dust ash.

The above general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the invention.

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and related applications, methods consistent with aspects of the present invention as detailed in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic longitudinal sectional view of a screening device in an embodiment of the present invention. Figure 2 is a schematic view showing the lateral structure of the screening device in the embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the screening device comprises an air inlet duct 1, a feed bin 2, a multi-frequency screen 3, a clean air duct 4, a dust remover 5, a screen upper belt, a sieve belt, and a programmable belt. Logic controller (not shown).

The feed bin 2 is located above the multi-frequency screen 3 and communicates with the feed port of the multi-frequency screen 3 for discharging the material to the multi-frequency screen 3.

The multi-frequency screen 3 further comprises a screen box and a screen core, the screen core is located inside the screen box, the screen box and the screen core are independently arranged, and the dust remover 5 is located at the rear end of the multi-frequency screen 3. Since the dust collector 5 is installed at the rear end of the multi-frequency screen 3, the rear end of the multi-frequency screen 3 is generally a cloth or a blind plate area, which does not occupy a space, and is equivalent to the space occupied by the dust-free device 5.

One end of the inlet duct 1 communicates with the front end of the multi-frequency screen 3 screen box, and the other end communicates with the air inlet of the dust remover 5, and the air inlet duct 1 can extract the dust-removed ash after the multi-frequency screen 3 is screened and enters the dust remover 5. Since the screen box of the multi-frequency screen 3 is not vibrated, it can be directly connected with the dust collector 5, and the installation and debugging are convenient.

One end of the clean air duct 4 communicates with the clean air outlet of the dust remover 5, and one end communicates with the outside, and the clean air duct 4 can discharge the purified air.

The dust ash outlet 6 is disposed at the lower end of the dust remover 5, and the dust ash can be discharged. The dust ash outlet 6 is connected to the undersize belt through the chute, and is used to introduce the dust ash from the dust ash outlet 6 through the chute into the undersize belt. The dust collected by the dust collector 5 is directly guided to the undersize belt, and the dust is not regularly cleaned.

The upper end of the front end of the multi-frequency screen 3 is provided with a sieve outlet 8 which is connected to the sieve belt through the chute, and the large particles after the material is sieved are introduced into the sieve belt from the sieve outlet 8 through the chute.

The bottom of the front end of the multi-frequency screen 3 is provided with a sieve outlet 7, and the sieve outlet 7 is connected to the undersize belt through the chute, and the small particles after the material is sieved are introduced into the undersize belt from the sieve outlet 7 through the chute.

The dust remover 5 can solve the problem of dust overflow of the sieve device and the blanking point of the sieve, and the dust remover 5 and the multi-frequency sieve 3 are integrated, and the distance from the dust removal point to the air inlet of the dust collector 5 is the shortest. It can solve the problem that the pipeline is too long and the wind is wasted.

The programmable logic controller is respectively connected with the multi-frequency screen 3 and the dust remover 5, and can control the start-stop of the multi-frequency screen 3 and the dust remover 5. This can solve the problem that the multi-frequency screen 3 is suspended and the air volume is wasted due to the continuous operation of the dust collector 5.

The flow of use of the above screening device will be described below.

The material enters the multi-frequency sieve 3 from the feed bin 2 through the feed port of the multi-frequency sieve 3, and after the sieve, the large particles are discharged from the sieve upper material outlet 8, and the large particles are introduced into the sieve upper material belt through the chute, and the small particles are discharged from the sieve. The outlet 7 is discharged, and the small particles are introduced into the undersize belt from the undersize outlet 7 through the chute, and the dust enters the dust remover 5 from the air inlet of the dust remover 5 through the air inlet duct 1, and the purified air is supplied from the clean air outlet of the dust remover 5. The exhaust gas is discharged to the outside through the clean gas pipe 4, and the dust removing ash is introduced from the dust removing ash outlet 6 through the chute into the undersize belt.

The above embodiment is adopted, since the dust remover 5 is installed at the rear end of the multi-frequency screen 3, and the rear end of the multi-frequency screen 3 is generally a cloth or a blind plate area, which does not occupy space, and is equivalent to the space occupied by the dust-free device 5; The screen box of the frequency sieve 3 is not vibrated, and can be directly connected with the dust remover 5, and is convenient to install and debug; the dust remover 5 can solve the dust overflow problem of the sieve device and the blanking point of the sieve material; the dust removal The machine 5 and the multi-frequency screen 3 are integrated, and the distance from the dust removal point to the air inlet of the dust collector 5 is the shortest, which can solve the problem of waste of air volume caused by the long pipeline; the multi-frequency screen 3 and the dust collector 5 are controlled by the programmable logic controller to start and stop. The utility model solves the problem that the multi-frequency screen 3 is suspended, and the air volume caused by the continuous operation of the dust remover 5 is wasted; the dust collected by the dust remover 5 is directly guided to the under-dash belt, and the dust removal ash is not regularly cleaned.

Other embodiments of the present invention will be readily apparent to those skilled in the <RTIgt; The present application is intended to cover any variations, uses, or adaptations of the present invention, which are in accordance with the general principles of the present invention and include common general knowledge or common technical means in the art that are not disclosed in the present disclosure. .

It is to be understood that the invention is not limited to the details of the details and The scope of the novel is limited only by the appended claims.

1‧‧‧Intake duct

2‧‧‧ Feed bin

3‧‧‧Multi-frequency screen

4‧‧‧ clean air pipeline

5‧‧‧Dust collector

6‧‧‧Dust ash export

7‧‧‧ sifting material export

8‧‧‧ sifter exports

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic longitudinal sectional view of a screening device in an embodiment of the present invention; and Fig. 2 is a schematic view showing a lateral structure of a screening device in an embodiment of the present invention.

Claims (7)

A screening device includes a multi-frequency screen, a dust remover, an air inlet duct and a clean air duct, wherein the multi-frequency screen further comprises a screen box and a screen core, the screen core is located inside the screen box, the screen box Separatingly disposed with the screen core, the dust collector is located at a rear end of the multi-frequency screen, one end of the air inlet duct is connected to a front end of the multi-frequency screen, and the other end is connected to an air inlet of the dust collector. One end of the clean air pipeline is connected to the clean air outlet of the dust remover, one end is connected to the outside, and the lower end of the dust remover is provided with a dust removal ash outlet. A screening device according to claim 1, wherein one end of the air inlet duct communicates with a front end of the screen box of the multi-frequency screen. The screening device of claim 1, further comprising a feed bin, the feed bin being located above the multi-frequency screen and in communication with the feed port of the multi-frequency screen. The screening device according to claim 1, further comprising an oversize belt, wherein an upper portion of the front end of the multi-frequency screen is provided with a sieve outlet, and the sieve outlet is connected to the sieve belt via a chute. The screening device according to claim 1, further comprising a undersize belt, wherein a lower portion of the front end of the multi-frequency screen is provided with a sieve outlet, and the outlet of the sieve is connected to the undersize belt via a chute. The screening device of claim 5, wherein the dust ash outlet is connected to the undersize belt via a chute. The screening device of claim 1, further comprising a programmable logic controller coupled to the multi-frequency screen and the dust collector, respectively.