阅读说明：本技术 一种旋流除尘塔用废水循环利用系统 (Waste water cyclic utilization system for whirl gas wash tower ) 是由 张佳谋 袁宏奎 靳国强 于 2019-09-05 设计创作，主要内容包括：本发明提供了一种旋流除尘塔用废水循环利用系统,属于水循环再利用技术,该系统包括安装在除尘塔底部的一级沉淀池、二级沉淀池和三级沉淀池,一级沉淀池和二级沉淀池之间设置有一级过滤装置,二级沉淀池和三级沉淀池之间设置有二级过滤装置,本发明在不改动现有旋流除尘塔现结构的情况下,增加了废水循环利用系统,该系统依靠湿法除尘原有的循环水泵作为提升,后端依靠重力自流至旋流塔水箱再次回用,能够减少节约水资源消耗,且不新增动力设施。(The invention provides a waste water recycling system for a cyclone dust removal tower, which belongs to the water recycling technology and comprises a primary sedimentation tank, a secondary sedimentation tank and a tertiary sedimentation tank which are arranged at the bottom of the dust removal tower, wherein a primary filtering device is arranged between the primary sedimentation tank and the secondary sedimentation tank, and a secondary filtering device is arranged between the secondary sedimentation tank and the tertiary sedimentation tank.)

1. The utility model provides a waste water cyclic utilization system for cyclone dust removal tower which characterized in that, including installing one-level sedimentation tank (2), second grade sedimentation tank (4) and tertiary sedimentation tank (6) in gas wash tower (1) bottom, wherein:

the primary sedimentation tank (2) comprises a water return pipe (201) arranged at the top, a primary sewage outlet (202) arranged at the bottom and a primary opening (203) arranged on the side surface, and the water return pipe (201) is communicated with a water outlet (102) at the bottom of the dust removal tower (1);

one side of the secondary sedimentation tank (4) is communicated with the primary sedimentation tank (2) through a primary opening (203), a secondary sewage outlet (401) is formed in the bottom of the secondary sedimentation tank (4), and a secondary opening (402) is formed in the other side of the secondary sedimentation tank (4);

one side of the third-stage sedimentation tank (6) is communicated with the second-stage sedimentation tank (4) through a second-stage opening (402);

a circulating pump (7) configured on the dedusting tower (1) is installed on the three-stage sedimentation tank (6), the water inlet end of the circulating pump (7) is communicated with the interior of the three-stage sedimentation tank (6), and the water outlet end of the circulating pump (7) is communicated with the water inlets (101) of the dedusting tower (1) through a water outlet pipe (501);

a primary filtering device (3) is installed in the primary opening (203), and a secondary filtering device (5) is installed in the secondary opening (402).

2. The wastewater recycling system for the cyclone dust removal tower as claimed in claim 1, wherein the primary sedimentation tank (2) and the secondary sedimentation tank (4) adopt funnel-shaped structures, and the funnel-shaped structures form an included angle of 50-65 degrees.

3. The wastewater recycling system for the cyclone dust removal tower as claimed in claim 2, wherein the lower edge of the primary filtering device (3) is 200-300mm higher than the lower edge of the side wall of the secondary sedimentation tank (4).

4. The wastewater recycling system for the cyclone dust removal tower according to claim 1, wherein ball valves are mounted on the primary sewage outlet (202) and the secondary sewage outlet (401).

5. The wastewater recycling system for the cyclone dust removal tower as claimed in claim 1, wherein the lower edge of the secondary filtering device (5) is 400 mm higher than the bottom of the tertiary sedimentation tank (6).

6. The wastewater recycling system for the cyclone dust removal tower as claimed in claim 1, wherein the primary filtering device (3) and the secondary filtering device (5) are both made of stainless steel wire meshes, the primary filtering device (3) and the secondary filtering device (5) are filled with glass wool materials, the aperture of each stainless steel wire mesh is 0.5-2 mm, and the thickness of each glass wool material is 10-20 mm.

7. The wastewater recycling system for cyclone dust removal tower according to claim 1, wherein the primary filtering device (3) comprises a housing (301), a primary filter screen (307), a secondary filter screen (308) and a seal (309), wherein:

the outer edge of the shell (301) is provided with a mounting wall (302), and the sealing element (309) is arranged between the mounting wall (302) and the outer wall of the primary sedimentation tank (2);

the primary filter screen (307) is arranged on one side of the shell (301) close to the primary sedimentation tank (2), and the secondary filter screen (308) is arranged on one side of the shell (301) close to the secondary sedimentation tank (5);

the improved back-flushing water pump is characterized in that a back-flushing cavity (303) is arranged inside the shell (301), a plurality of back-flushing holes (304) are uniformly formed in the two sides of the shell (301), a plurality of water inlets (305) are formed in the top of the back-flushing cavity (303), and the water inlets (305) are communicated with a high-pressure water pipe through ball valves.

8. The wastewater recycling system for the cyclone dust removal tower according to claim 7, wherein the primary filtering device (3) further comprises 8L-shaped fixing plates (306), and the L-shaped fixing plates (306) are mounted at the edge of the housing (301) through screws for fixing the primary filter screen (307) and the secondary filter screen (308).

9. The wastewater recycling system for the cyclone dust removal tower as claimed in claim 7, wherein the mounting wall (302) is an arc-shaped wall and can be closely attached to the outer wall of the primary sedimentation tank (2), the mounting wall (302) comprises 2 side mounting walls and 1 bottom mounting wall, and the 2 side mounting walls and the 1 bottom mounting wall are mounted on the outer wall of the primary sedimentation tank (2) through bolts, so that the sealing of the contact surface between the primary filtering device (3) and the primary sedimentation tank (2) can be realized.

Technical Field

The invention belongs to a water recycling technology, and particularly relates to a wastewater recycling system for a cyclone dust removal tower.

Background

Wet dust removal, also called scrubbing dust removal, is a technique in which water (or other liquid) and a dust-containing gas are brought into contact with each other, and heat and mass transfer is accompanied to separate dust particles from the gas by scrubbing. Wet scrubbing separates pollutants from flue gases by intimately contacting the flue gases with a liquid, typically water. The device can purify solid particle pollutants in the waste gas, can also remove gaseous pollutants, and can also play a role in cooling the gas. The advantages are that: the device has the advantages of simple structure, low manufacturing cost and high purification efficiency, is suitable for purifying various non-fibrous dusts which do not have chemical action with water, and is particularly suitable for purifying high-temperature, inflammable and explosive gases. The disadvantages are that: the pipeline equipment must be anticorrosive, sewage sludge needs to be treated, the lifting height of flue gas is reduced, a chimney can produce condensed water in winter, and the like.

A device commonly used in the wet dust removal technology is provided with a cyclone dust removal tower, wherein the centrifugal force of a cyclone processor is designed to separate large particles and hemp-like substances in dust, and the large particles and the hemp-like substances fall into a dust collection box from top to bottom. And some light and fine dust enters the water washing cyclone tower through the top pipeline, and is thrown to the wall of the tower under the action of centrifugation and is trapped by the absorption liquid falling from top to bottom and flowing. When dust passes through the cyclone column plate at high speed, the absorption liquid on the blades is blown into very small fog drops, and the dust particles, the absorption liquid and the fog drops collide with each other under the action of mechanisms such as collision, interception motion and the like, so that the particle size is increased continuously. Under the guiding action of the cyclone tower plate, the rotating motion aggravates to generate strong centrifugal force, dust is easily separated from waste gas and thrown to the tower wall, and flows to the tower bottom under the action of gravity to realize gas-solid separation. For the fine dust particles in the waste gas, the fine dust particles can not be completely collected after passing through the first-stage tower plate, a certain amount of dust particles escape, after the fine dust particles pass through the multi-layer tower plates, the fine dust particles are coagulated, the mass of the fine dust particles is continuously increased, the fine dust particles are collected and separated, and then the fine dust particles enter the multi-surface ball adsorption filter layer at the uppermost layer for removing water, so that the multi-surface balls are large in area and high in adsorption capacity. And then the filtered gas is discharged out of the room through a negative pressure fan.

Along with the wide use of whirl gas wash tower, also brought new ambient pressure, partial mill is inside to lack waste water treatment device, directly arranges the waste water in the whirl gas wash tower, when a large amount of extravagant water sources, has polluted the environment, among the prior art, lacks the waste water purification system of recycling to the whirl gas wash tower.

Disclosure of Invention

Aiming at the defects, the waste water recycling system is added under the condition that the existing structure of the existing cyclone dust removal tower is not changed, the system relies on the original circulating water pump for wet dust removal as lifting, the rear end of the system relies on gravity to automatically flow to the water tank of the cyclone tower for recycling, the water resource consumption can be reduced, and no power facility is additionally arranged.

In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:

the utility model provides a waste water cyclic utilization system for cyclone dust removal tower which characterized in that, including installing one-level sedimentation tank, second grade sedimentation tank and the tertiary sedimentation tank in the dust removal tower bottom, wherein: the primary sedimentation tank comprises a water return pipe arranged at the top, a primary sewage outlet arranged at the bottom and a primary opening arranged on the side surface, and the water return pipe is communicated with a water outlet at the bottom of the dust removal tower; one side of the secondary sedimentation tank is communicated with the primary sedimentation tank through a primary opening, a secondary sewage outlet is formed in the bottom of the secondary sedimentation tank, and a secondary opening is formed in the other side of the secondary sedimentation tank; one side of the third-stage sedimentation tank is communicated with the second-stage sedimentation tank through a second-stage opening; the circulating pump configured in the dedusting tower is arranged on the three-stage sedimentation tank, the water inlet end of the circulating pump is communicated with the interior of the three-stage sedimentation tank, and the water outlet end of the circulating pump is communicated with the water inlets of the dedusting tower through the water outlet pipe; a primary filtering device is installed in the primary opening, and a secondary filtering device is installed in the secondary opening.

Preferably, the primary sedimentation tank and the secondary sedimentation tank adopt funnel-shaped structures, and the funnel-shaped structures form an included angle of 50-65 degrees.

Preferably, the lower edge of the primary filtering device is 200-300mm higher than the lower edge of the side wall of the secondary sedimentation tank.

Preferably, ball valves are arranged on the first-stage sewage outlet and the second-stage sewage outlet.

Preferably, the lower edge of the secondary filtering device is 300-400 mm higher than the bottom of the third-level sedimentation tank.

Preferably, the outer parts of the primary filtering device and the secondary filtering device are both made of stainless steel wire meshes, the inner parts of the primary filtering device and the secondary filtering device are filled with glass wool materials, the aperture of each stainless steel wire mesh is 0.5-2 mm, and the thickness of each glass wool material is 10-20 mm.

Preferably, the primary filter device comprises a housing, a primary filter screen, a secondary filter screen and a sealing member, wherein: the outer edge of the shell is provided with a mounting wall, and the sealing element is arranged between the mounting wall and the outer wall of the primary sedimentation tank; the primary filter screen is arranged on one side of the shell close to the primary sedimentation tank, and the secondary filter screen is arranged on one side of the shell close to the secondary sedimentation tank; the inside recoil chamber that is provided with of casing, a plurality of anti-punching holes have evenly been seted up to the both sides of casing, the top in recoil chamber is provided with a plurality of water inlets, the water inlet has high-pressure water pipe through ball valve intercommunication.

Preferably, the first-stage filtering device further comprises 8L-shaped fixing plates, and the L-shaped fixing plates are mounted on the edge of the shell through screws and used for fixing the primary filter screen and the secondary filter screen.

Preferably, the installation wall is the outer wall that the arc wall just can closely laminate one-level sedimentation tank, and the installation wall includes 2 side-mounting walls and 1 end installation wall, installs 2 side-mounting walls and 1 end installation wall through the bolt and can realize the sealed of one-level filter equipment and one-level sedimentation tank contact surface on the outer wall of one-level sedimentation tank.

The wastewater recycling system for the cyclone dust removal tower has the following beneficial effects:

(1) according to the invention, under the condition that the existing structure of the existing cyclone dust removal tower is not changed, the waste water recycling system is added, the system relies on the original circulating water pump for wet dust removal as lifting, the rear end of the system relies on gravity to automatically flow to the water tank of the cyclone tower for recycling, the water resource consumption can be reduced, and no power facility is additionally arranged.

(2) The invention designs the three-stage sedimentation tank and the multi-stage filtering device, can realize the filtration and impurity removal of wastewater by utilizing gravity, and particularly designs the sewage discharge device at the bottom of the sedimentation tank, thereby being greatly convenient for later maintenance.

(3) The invention provides a filter element with a backwashing function, which is provided with an arc-shaped mounting wall and can be conveniently mounted on the wall of a circular sedimentation tank, and meanwhile, a backwashing cavity is arranged in the filter element, so that backwashing and impurity removal of a filter screen can be realized through backwashing after a high-pressure water source enters the backwashing cavity.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a first construction of the filter device of the present invention;

FIG. 3 is a second schematic view of the filter apparatus of the present invention;

FIG. 4 is a schematic view showing the internal structure of the filtration apparatus of the present invention.

In the figure, 1-a dust removal tower, 101-a water inlet, 102-a water outlet, 103-a support, 2-a first-level sedimentation tank, 201-a water return pipe, 202-a first-level sewage outlet, 203-a first-level opening, 3-a first-level filtering device, 301-a shell, 302-an installation wall, 303-a backflushing cavity, 304-a backflushing hole, 305-a water inlet, 306-a fixing plate, 307-a primary filter screen, 308-a secondary filter screen, 310-a sealing element, 4-a second-level sedimentation tank, 401-a second-level sewage outlet, 402-a second-level opening, 5-a second-level filtering device, 6-a third-level sedimentation tank, 7-a circulating pump and.

Detailed Description

The invention will be further explained with reference to the accompanying drawings in which:

as shown in figure 1, a wastewater recycling system for a cyclone dust removal tower comprises a primary sedimentation tank 2, a secondary sedimentation tank 4 and a tertiary sedimentation tank 6 which are arranged at the bottom of the dust removal tower 1, wastewater coming out from the bottom of the dust removal tower 1 enters the primary sedimentation tank 2 through a water return pipe 201, a primary sewage outlet 202 and a side surface arranged at the bottom of the primary sedimentation tank 2 are provided with a primary opening 203, a primary filtering device 3 is arranged in the primary opening 203, one side of the secondary sedimentation tank 4 is communicated with the primary sedimentation tank 2 through the primary opening 203, a secondary sewage outlet 401 is arranged at the bottom of the secondary sedimentation tank 4, a secondary opening 402 is arranged at the other side of the secondary sedimentation tank 4, a secondary filtering device 5 is arranged in the secondary opening 402, one side of the tertiary sedimentation tank 6 is communicated with the secondary sedimentation tank 4 through the secondary opening 402, a circulating pump 7 configured on the dust removal tower 1 is arranged on the tertiary sedimentation, the water inlet end of the circulating pump 7 is communicated with the interior of the three-stage sedimentation tank 6, and the water outlet end of the circulating pump 7 is communicated with the water inlets 101 of the dust removal tower 1 through the water outlet pipe 501.

Specifically, this waste water cyclic utilization system utilizes gravity, the structure that tertiary sedimentation tank reduces gradually has been adopted, in fig. 1, the lower edge of one-level filter equipment 3 is than the lower edge of 4 lateral walls of second grade sedimentation tank 200 + 300 millimeters, because the position of second grade sedimentation tank 4 is lower, waste water can be inside second grade sedimentation tank 4 automatic inflow under the action of gravity in the one-level sedimentation tank 2, the lower edge of second grade filter equipment 5 is higher than third grade sedimentation tank 6 bottom again 300 + 400 millimeters, waste water in the second grade sedimentation tank 4 also can be automatic inflow tertiary sedimentation tank 6 under the action of gravity, circulating pump 7 that is located on third grade sedimentation tank 6 draws the dusting water from tertiary sedimentation tank 6, different water inlets 101 are carried to the rethread pipeline, circulating pump 7 water inlet is 200mm apart from the bottom of the pool, under the prerequisite of protection water pump, furthest circulation tank internal liquid.

It should be noted that, the effective volume of one-level sedimentation tank 2 sets up according to the biggest circulating water volume of whirl tower, and the effective volume of second grade sedimentation tank 4 sets up according to 2 volumetric 70% of one-level sedimentation tank, and tertiary sedimentation tank 6 sets up according to 2 volumetric 50% of one-level sedimentation tank, and the cell body adopts transparent standpipe to show the water level, installs in the positive middle part of each cell body, marks millimeter unit measurement, and the effect is for reading cell body water level and mud pit mud level. The whole sedimentation tank is made of carbon steel, is brushed with anti-corrosion paint, has the thickness of 3mm, ensures bearing and bearing, and is made by adopting an integral welding process.

It should be further noted that the primary sedimentation tank 2 and the secondary sedimentation tank 4 adopt funnel-shaped structures, the funnel-shaped structures form an included angle of 50-65 degrees, ball valves are respectively arranged on the primary sewage outlet 202 and the secondary sewage outlet 401, and sewage is periodically discharged through the ball valves.

It should be further noted that the lower water port of the spray tower adopts a structure that the center of the tower is vertically downward, the distance from the return pipe 201 to the wall of the primary sedimentation tank 2 should be 200-.

The first-stage filtering device 3 and the second-stage filtering device 5 in the invention can adopt various structures, and can directly adopt a single-layer filtering net, for example: the outer parts of the primary filtering device 3 and the secondary filtering device 5 are both made of stainless steel wire meshes, the inner parts of the primary filtering device 3 and the secondary filtering device 5 are filled with glass wool materials, the aperture of each stainless steel wire mesh is 0.5-2 mm, and the thickness of each glass wool material is 10-20 mm. The structure of two layers of filter screens can be adopted, and a backwashing device is arranged in the two layers of filter screens, as shown in fig. 2 and fig. 3, the filtering device can be tightly attached to an arc-shaped opening, and meanwhile, the filtering device is provided with an inner layer of filter screen and an outer layer of filter screen, so that the filtering effect is increased, and the filtering surface can be arc-shaped or plane.

Specifically, the primary filter device 3 includes a housing 301, a primary filter screen 307, a secondary filter screen 308, and a seal 309, and the secondary filter device 5 is not shown in the drawings but has a uniform structure. Wherein, the outer edge of the shell 301 is provided with a mounting wall 302, and a sealing member 309 is arranged between the mounting wall 302 and the outer wall of the primary sedimentation tank 2; the primary filter screen 307 is arranged on one side of the shell 301 close to the primary sedimentation tank 2, and the secondary filter screen 308 is arranged on one side of the shell 301 close to the secondary sedimentation tank 5; casing 301 is inside to be provided with recoil chamber 303, and a plurality of anti-punching holes 304 have evenly been seted up to casing 301's both sides, and the top of recoil chamber 303 is provided with a plurality of water inlets 305, and water inlet 305 has high-pressure water pipe through the ball valve intercommunication, when needs wash the inside of recoil chamber 303, can insert rivers return circuit respectively with a plurality of water inlets 305, takes away inside impurity through intaking, play water.

Specifically, the outer part of the primary filter screen 307 is made of a stainless steel wire mesh, the inner part of the primary filter screen is filled with glass wool, the aperture of the stainless steel wire mesh is 1-2 mm, and the thickness of the glass wool is 5-8 mm. The outer parts of the secondary filter screens 308 are all made of stainless steel wire meshes, the inner parts of the secondary filter screens are filled with glass wool materials, the aperture of each stainless steel wire mesh is 05-1 mm, and the thickness of each glass wool material is 8-12 mm.

As shown in fig. 4, the primary filtering device 3 further includes 8L-shaped fixing plates 306, the L-shaped fixing plates 306 are installed at the edge of the casing 301 through screws for fixing the primary filter screen 307 and the secondary filter screen 308, in the drawing, the installation wall 302 is an arc-shaped wall and can be tightly attached to the outer wall of the primary sedimentation tank 2, the installation wall 302 includes 2 side installation walls and 1 bottom installation wall, and the sealing of the contact surface between the primary filtering device 3 and the primary sedimentation tank 2 can be realized by installing the 2 side installation walls and the 1 bottom installation wall on the outer wall of the primary sedimentation tank 2 through bolts.

In the practical use process, waste water is firstly filtered through a primary filter screen 307, then enters a backflushing cavity 303 through a one-side backflushing hole 304, then enters a secondary filter screen 308 through a another-side backflushing hole 304 to complete double filtering, the backflushing cavity is arranged in the filtering piece, and after a high-pressure water source enters the backflushing cavity, backflushing and impurity removal of the filter screen can be achieved through the backflushing hole.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.