CN217644594U

CN217644594U - Leaf selecting device with dust removing function

Info

Publication number: CN217644594U
Application number: CN202023325922.XU
Authority: CN
Inventors: 李亚勇; 王艺斌; 刘承钧
Original assignee: NANJING JOULE TECHNOLOGY CO LTD
Current assignee: NANJING JOULE TECHNOLOGY CO LTD
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-10-25
Anticipated expiration: 2030-12-31

Abstract

The invention provides a leaf selecting device with a dust removing function, which comprises a leaf selecting table, a blanking chamber and a negative pressure dust removing chamber, wherein the blanking chamber is arranged below an outlet of a hopper in a leaf selecting area of the leaf selecting table; the blanking chamber comprises a filter screen a, a drawer a, a filter screen b and a drawer b, wherein the filter screen a is arranged above the drawer a, the bottom of the drawer a is provided with the filter screen, the filter screen b is arranged on one side of the blanking chamber close to the negative pressure dust removal chamber and arranged on an air passage between the blanking chamber and the negative pressure dust removal chamber, and the drawer b is arranged at the bottom of the blanking chamber and positioned below the drawer a and the filter screen b; the negative pressure dust removal chamber comprises a DZ axial flow fan and a plate type filter, the DZ axial flow fan is arranged on one side close to the filter screen b, an air inlet of the DZ axial flow fan faces the filter screen b, and the plate type filter is arranged in the air outlet direction of the DZ axial flow fan.

Description

Leaf selecting device with dust removing function

Technical Field

The invention belongs to the technical field of leaf selection and dust removal in a tobacco factory, and particularly relates to a leaf selection device with a dust removal function.

Background

In the threshing and redrying process, the grading and sorting of tobacco leaves is one of the key processes, and the process is mainly completed by a large amount of manpower. Due to the characteristics of tobacco materials, a large amount of absorbable dust is inevitably generated in the whole screening process, great harm is brought to the health and production environment of workers, and meanwhile, the dust in the whole leaf selecting workshop is dense and the working environment is poor. Therefore, effective dust removal, environmental improvement and damage reduction are the objectives of redrying enterprises.

At present, most redrying enterprises mainly adopt two dust removal methods. Firstly, adopt the water smoke to spray and install the appropriate amount spray valve in whole workshop of selecting promptly, the spray valve connects the water under high pressure, forms the spraying. The dust is adsorbed by utilizing the spray, and fine dust droplets gradually fall to the ground under the action of gravity, so that the aim of dust fall is fulfilled. The method only settles the dust on the ground, the dust is not removed, the dust is changed into dust along with the loss of moisture, the dust on the ground is larger, the dust on the ground can be lifted again due to the factors of personnel walking, object movement and the like, and the dust settling problem cannot be thoroughly solved. The second method is to install an environmental dust removal system in the whole plant and adopt an industrial cloth bag dust removal system. Dust in the air is adsorbed and removed by a strong negative pressure. The method has the advantages of thorough dust removal and meeting the requirement of environmental sanitation. The method is characterized in that dust is removed firstly and then dust is removed, timeliness is poor, and people-oriented reasons are not achieved, because the dust is generally contacted with people firstly when leaves are selected manually. Therefore, how to remove the generated dust in time preferentially in the leaf selection work to reduce the contact with the leaf selection personnel as much as possible, reduce the damage to the leaf selection personnel, improve the working environment and improve the leaf selection efficiency is a problem to be solved urgently.

Disclosure of Invention

In order to solve the problems, the invention provides a leaf selecting device with a dust removing function for leaf selecting and dust removing of a tobacco factory.

In order to achieve the purpose, the invention provides the following technical scheme:

a leaf selecting device with a dust removing function comprises a leaf selecting table, a blanking chamber and a negative pressure dust removing chamber, wherein the blanking chamber is arranged below an outlet of a hopper in a leaf selecting area of the leaf selecting table, and the negative pressure dust removing chamber is arranged on one side of the blanking chamber; the blanking chamber comprises a filter screen a, a drawer a, a filter screen b and a drawer b, wherein the filter screen a is arranged above the drawer a, the bottom of the drawer a is provided with the filter screen, the filter screen b is arranged on one side, close to the negative pressure dust removal chamber, of the blanking chamber and is arranged on an air passage between the blanking chamber and the negative pressure dust removal chamber, and the drawer b is arranged at the bottom of the blanking chamber and is positioned below the drawer a and the filter screen b; the negative pressure clean room includes DZ axial fan, plate filter, shutter, DZ axial fan sets up in the one side that is close to filter screen b, and its air intake is towards filter screen b, plate filter sets up on DZ axial fan air-out direction, the shutter sets up at the negative pressure clean room air outlet.

Furthermore, the filter screen b is obliquely arranged.

Furthermore, the aperture of the filter screen at the bottom of the drawer a is smaller than that of the filter screen a.

Furthermore, the aperture of the filter screen b is smaller than that of the filter screen at the bottom of the drawer a.

Further, still include the shutter, the shutter setting is at negative pressure clean room air outlet.

Furthermore, a machine shell is arranged outside the blanking chamber and the negative pressure dust removal chamber.

Further, still include soundproof cotton, soundproof cotton sets up on the casing.

Further, the plate filter comprises a metal frame and electrostatic cotton.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. the invention simulates the principle of a household range hood, integrates a shell, an axial flow fan, a filter and a dust removal and collection device, adopts a negative pressure dust removal chamber to remove dust from an operation area and surrounding air, reduces the harm of dust particles to personnel, and does not occupy the operation space of leaf selection.

2. The blanking chamber and the negative pressure dust removal chamber are integrated into a whole through the machine shell, the main body of the machine shell is made of 304 stainless steel, and the whole machine shell is closed, attractive and elegant.

3. The equipment can be independently controlled by a single machine or controlled in a centralized manner, and the starting number can be intelligently selected during the centralized control, so that the energy consumption is saved; the device can be installed singly or in double ways, and has flexibility.

Drawings

Fig. 1 is a schematic structural view of a leaf selecting device with a dust removing function provided by the invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a top view of the leaf selection area of the leaf selection table.

Description of reference numerals:

1-shutter, 2-plate filter, 3-DZ axial flow fan, 4-soundproof cotton, 5-filter screen b, 6-filter screen a, 7-drawer a, 8-drawer b, 9-machine shell, 10-leaf selecting table, 11-blanking chamber and 12-negative pressure dust removal chamber.

Detailed Description

The technical solutions provided by the present invention will be described in detail with reference to specific examples, which should be understood that the following specific embodiments are only illustrative and not limiting the scope of the present invention.

As shown in fig. 1-2, the leaf selecting device with a dust removing function provided by the invention comprises a leaf selecting table 10, a blanking chamber 11 and a negative pressure dust removing chamber 12. The leaf selecting area platform 10 is formed by welding a stainless steel square pipe and a circular pipe, the surface of the platform is in a screen mesh shape, and when workers select leaves, fragments can fall from the platform to the blanking chamber 11. The blanking chamber 11 and the negative pressure dust removal chamber 12 are arranged below the leaf selecting platform, and the blanking chamber is positioned right below the outlet of the hopper in the leaf selecting area and is used for collecting tobacco fragments and dust. The negative pressure dust chamber 12 is arranged on one side of the blanking chamber.

The blanking chamber mainly comprises a filter screen a6, a drawer a7, a filter screen b5 and a drawer b8, and the negative pressure dust removal chamber 12 comprises a DZ axial flow fan 3, a plate filter 2, soundproof cotton 4 and a shutter 1. Because need form holistic air flow, blanking room and negative pressure clean room outside wholly set up casing 9, are convenient for protect the interior subassembly to isolated with the outside, do benefit to the wind direction and introduce into.

The filter screen a is arranged above the drawer a7, is made of a screen with larger meshes and is mainly used for isolating larger fragments, and the fragments are periodically cleaned by a manual brush. The bottom of the drawer a7 is provided with a filter screen which is made of a screen with smaller meshes and is mainly used for isolating and collecting smaller fragments which are periodically extracted and cleaned manually. The filter screen b5 is made of a screen mesh with small meshes, is arranged on one side of the blanking chamber close to the axial flow fan, forms a certain angle with the bottom surface, and is mainly used for isolating small fragments. Drawer b8 sets up in the below of blanking room for to the collection of the tobacco leaf mince that drops and dust on filter screen b5, drawer b8 bottom is sealed, is taken out the clearance by the manual work regularly.

The whole air outlet (the left-most air outlet direction in fig. 1) of the negative pressure dust removal chamber deviates from the leaf selection area, dust on tobacco leaves and air around the operation area are removed, and the damage of dust particles to personnel is reduced while the operation space of leaf selection is not occupied. The DZ axial flow fan 3 is arranged on one side close to the blanking chamber, and is mainly characterized by large rotary length of blades, space distortion and inclined blade shape, and can achieve required air volume and air pressure at low speed and reduce fan noise. In fig. 2, the arrow direction indicates the moving direction of the air flow when the axial flow fan is working, and in the figure, under the action of the axial flow fan, air containing dust is sucked into the filter screen b5 and passes through the filter screen b5 at a high speed, and at this time, the dust in the air is blocked by the filter screen b 5.

The plate type filter 2 is arranged in the air outlet direction of the DZ axial flow fan and mainly comprises a metal frame and electrostatic cotton. The electrostatic cotton contains electrostatic fibers and has the advantages of high dust laying capacity, high dust loading capacity, high air permeability and the like. The plate filter has the advantages of large quantity of cut-off, high dust removal efficiency and repeated use by flushing. Considering the convenience of maintenance, the plate-type filter adopts a slot installation mode, and the filter can be directly pulled out by hand only by opening a box door during maintenance.

The soundproof cotton 4 is laid on the casing and used for reducing noise of the whole equipment and providing a comfortable and low-dryness working environment for workers. Preferably, as long as the air outlet is not an air inlet, the air outlet is paved by sound insulation cotton. The shutter 1 is positioned at an air outlet of the negative pressure dust chamber and is mainly convenient for adjusting the air outlet direction.

The integral working principle of the invention is as follows, opening the DZ axial flow fan 3, forming negative pressure in the negative pressure dust removal chamber and the blanking chamber to generate airflow, wherein wind enters from the hopper area, the hopper of the leaf selection area of the tobacco leaf selection table falls into the blanking chamber, larger fragments are filtered by the filter screen a and fall into the drawer a, smaller fragments are filtered by the filter screen at the bottom of the drawer, the airflow drifts to the negative pressure dust removal chamber, dust in the air is blocked by the filter screen b5 by the filter screen b and falls into the drawer b, the airflow enters the plate type filter by the DZ axial flow fan to filter fine dust, and finally clean air is discharged by the shutter.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims

1. The utility model provides a take dust removal function's selection leaf device which characterized in that: the device comprises a leaf selecting table, a blanking chamber and a negative pressure dust removing chamber, wherein the blanking chamber is arranged below an outlet of a hopper in a leaf selecting area of the leaf selecting table, and the negative pressure dust removing chamber is arranged on one side of the blanking chamber; the blanking chamber comprises a filter screen a, a drawer a, a filter screen b and a drawer b, wherein the filter screen a is arranged above the drawer a, the bottom of the drawer a is provided with the filter screen, the filter screen b is arranged on one side, close to the negative pressure dust removal chamber, of the blanking chamber and is arranged on an air passage between the blanking chamber and the negative pressure dust removal chamber, and the drawer b is arranged at the bottom of the blanking chamber and is positioned below the drawer a and the filter screen b; the negative pressure clean room includes DZ axial fan, plate filter, shutter, DZ axial fan sets up in the one side that is close to filter screen b, and its air intake is towards filter screen b, plate filter sets up on DZ axial fan air-out direction, the shutter sets up at the negative pressure clean room air outlet.

2. The leaf selecting device with the dust removing function according to claim 1, characterized in that: the filter screen b is obliquely arranged.

3. The leaf selecting device with dust removing function as claimed in claim 1, wherein: the aperture of the filter screen at the bottom of the drawer a is smaller than that of the filter screen a.

4. The leaf selecting device with dust removing function as claimed in claim 1, wherein: the aperture of the filter screen b is smaller than that of the filter screen at the bottom of the drawer a.

5. The leaf selecting device with dust removing function as claimed in claim 1, wherein: the blanking chamber and the negative pressure dust removal chamber are externally provided with a machine shell.

6. The leaf selecting device with dust removing function as claimed in claim 5, wherein: still include soundproof cotton, soundproof cotton sets up on the casing.

7. The leaf selecting device with dust removing function as claimed in claim 1, wherein: the plate filter comprises a metal frame and electrostatic cotton.