CN219023573U

CN219023573U - Mica dust recovery processing system

Info

Publication number: CN219023573U
Application number: CN202223165396.4U
Authority: CN
Inventors: 邓新华; 邹岚
Original assignee: Hunan Hualan Environmental Protection Technology Co ltd
Current assignee: Hunan Hualan Environmental Protection Technology Co ltd
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-05-16
Anticipated expiration: 2032-11-28

Abstract

The utility model relates to the technical field of dust removal, in particular to a mica dust recycling system, which comprises a washing tower and a dust pumping pipe connected with an air inlet of the washing tower; the bottom of the washing tower is provided with a three-stage sedimentation tank, and a first-stage sedimentation tank of the three-stage sedimentation tank is communicated with the bottom of the washing tower; a sewage collecting tank is arranged at one side of the first-stage sedimentation tank, a filter screen inclined towards the sewage collecting tank is arranged at the bottom of the washing tower, and a sludge discharge port communicated with the sewage collecting tank is arranged at the lower position of the filter screen of the washing tower; the sewage collecting tank is connected with the solid-liquid separator through the sewage pump and the sewage pipe, mica powder separated by the solid-liquid separator is conveyed to the mixing tank for recycling, and filtered wastewater is conveyed to the first-stage sedimentation tank through the centrifugal pump for recycling. The utility model realizes the recycling of mica dust, the designed washing tower has novel structure, the problem of blockage of the washing tower can not occur, the slurry deposited on the washing tower can not be cleaned regularly, and meanwhile, the blockage probability of a circulating pump is reduced.

Description

Mica dust recovery processing system

Technical Field

The utility model relates to the technical field of dust removal, in particular to a mica dust recycling system.

Background

The mica paper is made of white mica through thermo-chemical or hydraulic stripping, breaking to form pulp, and cutting into continuous roll paper or sheet paper, and is suitable for use in domestic and foreign mica pressing plate, mica tape, fireproof cable, heavy and light industry and various household appliances.

At present, the mica paper production process mainly comprises eight steps of crushing, grading, pulping, papermaking, steam forming, squeezing, drying and slitting. Wherein, the fluttering of the trimming materials during cutting affects the production environment, and the mica dust can cause mica dust lungs after long-term inhalation of mica dust by production workers; or dust carried in the steam forming process, and the waste of the discharged dust also pollutes the environment. Since mica dust is soluble in water and easily adhered, a water-soluble method is currently used for washing and filtering the mica dust. Such as: chinese patent publication No. CN205379761U discloses a circulation turbulence removes metal dust device, can make gaseous formation torrent under draught fan and slope baffle effect, increases the area of contact of dust and dust removal reaction liquid, and multilayer baffle and two-sided shower can carry out the washing many times to the air of taking the dust, and dust removal reaction liquid can cyclic utilization. However, the conventional dust removing device has the following defects:

1. the dust slurry is deposited at the bottom of the tank body, the treatment efficiency of the dust slurry is too low by adopting a valve mode and the dust slurry needs to be cleaned manually at regular intervals, otherwise, the deposited slurry blocks an overflow port to influence the spray liquid to enter the liquid storage tank;

2. the spraying liquid containing mud at the bottom of the tank body has short sedimentation time, and the spraying liquid entering the liquid storage tank also contains a large amount of dust, so that the circulating pump is easy to be blocked.

Because of the relatively high cost of mica raw materials, how to recycle the mica dust generated in the mica paper production process to reduce the production cost is a problem in the art that needs to be solved.

Disclosure of Invention

The utility model aims to solve the technical problems existing in the prior art. Therefore, the utility model provides a mica dust recycling system.

The technical scheme adopted for solving the technical problems is as follows:

the mica dust recycling system comprises a washing tower and a dust pumping pipe connected with an air inlet of the washing tower; the bottom of the washing tower is provided with a three-stage sedimentation tank, and a first-stage sedimentation tank of the three-stage sedimentation tank is communicated with the bottom of the washing tower; a sewage collecting tank is arranged at one side of the first-stage sedimentation tank, a filter screen inclined towards the sewage collecting tank is arranged at the bottom of the washing tower, and a sludge discharge port communicated with the sewage collecting tank is arranged at the lower position of the filter screen of the washing tower; the sewage collecting tank is connected with the solid-liquid separator through the sewage pump and the sewage pipe, mica powder separated by the solid-liquid separator is conveyed to the mixing tank for recycling, and filtered wastewater is conveyed to the first-stage sedimentation tank through the centrifugal pump for recycling.

In a preferred embodiment of the mica dust recycling system provided by the utility model, the air inlet is communicated with the washing tower in a tangential manner on the tower body of the washing tower.

In a preferred embodiment of the mica dust recycling system provided by the utility model, the inner wall of the washing tower is provided with a guide plate which rises in a spiral manner.

In a preferred embodiment of the mica dust recycling system provided by the utility model, an axial cyclone washing pipe, a radial spray pipe, a demister and a backwashing pipe are sequentially arranged in the washing tower from bottom to top, and the cyclone washing pipe, the spray pipe and the backwashing pipe are connected with a third-stage sedimentation tank of the third-stage sedimentation tank through a water supply pipeline and a circulating pump.

In a preferred embodiment of the mica dust recycling system provided by the utility model, the third-stage sedimentation tank is provided with a water supplementing pipeline, and a water outlet of the water supplementing pipeline is provided with a ball cock.

In a preferred embodiment of the mica dust recycling system provided by the utility model, the cyclone washing pipe comprises a vertically arranged pipeline and a nozzle spirally arranged on the pipeline.

In a preferred embodiment of the mica dust recycling system provided by the utility model, the bottoms of the first-stage sedimentation tank, the second-stage sedimentation tank and the third-stage sedimentation tank of the three-stage sedimentation tank are provided with funnel-shaped sewage outlets, and the sewage outlets are connected with the solid-liquid separator through sewage pipes and sewage pumps.

In a preferred embodiment of the mica dust recycling system provided by the utility model, a deflector opposite to the inclination direction of the filter screen is further arranged above the filter screen in the washing tower.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the mica slurry dissolved in spray water is filtered by utilizing a filter screen and enters a sewage collecting tank under the flushing of the spray water, and the slurry is pumped to a solid-liquid separator by utilizing a sewage pump to separate mica powder and send the mica powder to a mixing tank for recycling, and filtered wastewater is pumped to a first-stage sedimentation tank for recycling, so that the problem of blockage of a washing tower is avoided, and the slurry deposited by the washing tower is not required to be cleaned regularly; meanwhile, as most of dust in the spray water is filtered by the filter screen, the dust content of the spray water is reduced, the precipitation efficiency of the precipitation tank is effectively improved, and the blocking probability of the circulating pump is greatly reduced;

2. the arrangement of the rotary washing pipe and the radial spraying pipe in the washing tower sprays dust-containing gas in the radial and axial directions, so that the dust removal effect is good.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

fig. 1 is a schematic diagram of a mica dust recycling system provided by the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The embodiment provides a mica dust recycling system, as shown in fig. 1, comprising a scrubber 1 and a dust pumping pipe 2 connected with an air inlet 101 of the scrubber, wherein: the dust pump pipe 2 is provided with an induced draft fan 3, and the dust pump pipe 2 is used for pumping off the steam containing mica dust in the steam forming process or the mica dust generated in the separating and cutting process. Dust is removed by the dust-containing gas through the washing of the washing tower, and the purified air is pumped into a chimney through an induced draft fan by an air outlet 102 at the top of the washing tower for discharge.

Preferably, the bottom of the washing tower 1 in this embodiment is provided with a third-stage sedimentation tank 4, which is a first-stage sedimentation tank 401, a second-stage sedimentation tank 402 and a third-stage sedimentation tank 403 from left to right, overflow communication is performed between two adjacent stages of sedimentation tanks, wherein the first-stage sedimentation tank 401 is communicated with the bottom of the washing tower 1, spray water enters the first-stage sedimentation tank, enters the second-stage sedimentation tank after being precipitated by the first-stage sedimentation tank, and then enters the third-stage sedimentation tank, dust content in the spray water in the third-stage sedimentation tank is the lowest, and the spray water in the third-stage sedimentation tank is used as circulating spray water, so that blocking probability of a circulating pump can be greatly reduced.

In order to solve the problems of blockage of the washing tower and the need of manual regular cleaning, in this embodiment, a dirt collecting tank 5 is arranged at one side of the first-stage sedimentation tank 401, a filter screen 6 inclined towards the dirt collecting tank 5 is arranged at the bottom of the washing tower 1, a special mica powder filter screen is adopted as the filter screen, and a mud discharging port 103 communicated with the dirt collecting tank 5 is arranged at the lower position of the filter screen 6 of the washing tower 1; the sewage collecting tank 5 is connected with the solid-liquid separator 7 through a sewage pump and a sewage pipe, mica powder separated by the solid-liquid separator 7 is conveyed to the mixing tank for recycling, and filtered wastewater is conveyed to the first-stage sedimentation tank 401 through a centrifugal pump for recycling. According to the utility model, the mica slurry dissolved in spray water is filtered by utilizing a filter screen and enters a sewage collecting tank under the flushing of the spray water, and the slurry is pumped to a solid-liquid separator by utilizing a sewage pump to separate mica powder and send the mica powder to a mixing tank for recycling, and filtered wastewater is pumped to a first-stage sedimentation tank for recycling, so that the problem of blockage of a washing tower is avoided, and the slurry deposited by the washing tower is not required to be cleaned regularly; meanwhile, most of dust in the spray water is filtered by the filter screen, so that the dust content of the spray water is reduced, the precipitation efficiency of the precipitation tank is effectively improved, and the blocking probability of the circulating pump is greatly reduced.

Preferably, the air inlet 101 in this embodiment is tangentially connected to the washing tower 1, and the dust-containing gas enters the washing tower along the tangential direction, so as to form a spiral air flow in the washing tower, and the dust and the gas are separated under the action of centrifugal force, thereby facilitating spray dust removal. Furthermore, the inner wall of the washing tower 1 is provided with a guide plate 8 which spirally rises to spirally rise the air flow in the washing tower. For the spray structure, the embodiment is provided with an axial cyclone washing pipe 9, a radial spray pipe 10, a demister 11 and a backwashing pipe 12 in the washing tower 1 from bottom to top in sequence, wherein: the cyclone washing pipe and the radial spraying pipe are arranged to spray dust-containing gas in the radial and axial directions, so that the dust removal effect is good; specifically, the cyclone washing pipe 9 comprises a vertically arranged pipeline and a nozzle spirally arranged on the pipeline, and spray is performed on different radial directions of the washing tower by using the spirally arranged nozzle; the demister is arranged for removing water vapor in the gas, and the backwash pipe is arranged for mainly and periodically backwashing the demister. Specifically, the cyclone washing pipe 9, the spray pipe 10 and the back flushing pipe 12 are all connected with the third-stage sedimentation tank 403 of the third-stage sedimentation tank 4 through a water supply pipeline and a circulating pump.

Further, in this embodiment, the third-stage sedimentation tank 403 is provided with a water replenishing pipe 13, and a water outlet of the water replenishing pipe 13 is provided with a ball float valve 14. When the water level in the third-stage sedimentation tank is lower than the set water level, water can be automatically supplemented through the ball float valve, so that the spraying work in the washing tower is ensured.

Example two

On the basis of the first embodiment, as shown in fig. 1, in this embodiment, funnel-shaped drain outlets are further disposed at bottoms of the first-stage sedimentation tank 401, the second-stage sedimentation tank 402, and the third-stage sedimentation tank 403 of the third-stage sedimentation tank 4, and the drain outlets are connected with the solid-liquid separator 7 through a drain pipe and a drain pump. The sedimentation tank can be cleaned regularly to ensure the function of the sedimentation tank, and the extracted mud is sent back to the mixing tank for recycling after solid-liquid separation.

Examples

On the basis of the first embodiment or the second embodiment, as shown in fig. 1, in this embodiment, a deflector 15 opposite to the inclination direction of the filter screen 6 is further disposed above the filter screen in the washing tower 1, and the arrangement of the deflector 15 guides the slurry and the spray water to the middle part of the filter screen, so as to ensure the filtering effect of the spray water and the slurry above the lower part of the filter screen.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims

1. A mica dust recycling system comprises a washing tower and a dust pumping pipe connected with an air inlet of the washing tower; the method is characterized in that:

the bottom of the washing tower is provided with a three-stage sedimentation tank, and a first-stage sedimentation tank of the three-stage sedimentation tank is communicated with the bottom of the washing tower;

a sewage collecting tank is arranged at one side of the first-stage sedimentation tank, a filter screen inclined towards the sewage collecting tank is arranged at the bottom of the washing tower, and a sludge discharge port communicated with the sewage collecting tank is arranged at the lower position of the filter screen of the washing tower;

the sewage collecting tank is connected with the solid-liquid separator through the sewage pump and the sewage pipe, mica powder separated by the solid-liquid separator is conveyed to the mixing tank for recycling, and filtered wastewater is conveyed to the first-stage sedimentation tank through the centrifugal pump for recycling.

2. The mica dust recycling system according to claim 1, wherein: the air inlet is communicated with the washing tower in a tangential line on the tower body of the washing tower.

3. The mica dust recycling system according to claim 1, wherein: the inner wall of the washing tower is provided with a guide plate which rises spirally.

4. The mica dust recycling system according to claim 1, wherein: the washing tower is internally and sequentially provided with an axial cyclone washing pipe, a radial spray pipe, a demister and a backwashing pipe from bottom to top, wherein the cyclone washing pipe, the spray pipe and the backwashing pipe are connected with a third-stage sedimentation tank of the third-stage sedimentation tank through a water supply pipeline and a circulating pump.

5. The mica dust recycling system according to claim 4, wherein: the third-stage sedimentation tank is provided with a water supplementing pipeline, and a water outlet of the water supplementing pipeline is provided with a ball float valve.

6. The mica dust recycling system according to claim 4, wherein: the cyclone washing pipe comprises a vertically arranged pipeline and a nozzle spirally arranged on the pipeline.

7. The mica dust recycling system according to claim 1, wherein: the bottom of the first-stage sedimentation tank, the second-stage sedimentation tank and the third-stage sedimentation tank of the three-stage sedimentation tank is provided with a funnel-shaped sewage outlet, and the sewage outlet is connected with the solid-liquid separator through a sewage pipe and a sewage pump.

8. A mica dust recycling treatment system according to any one of claims 1 to 7, characterized in that: and a guide plate which is opposite to the inclination direction of the filter screen is further arranged above the filter screen in the washing tower.