Industrial waste gas treatment device

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to an industrial waste gas treatment device which comprises a spray tower, a reservoir and a spray circulating water supply waterway, and the spray circulating water supply waterway is used for circularly supplying water in the reservoir to the spray tower for use; a horizontally arranged filter screen is mounted in the water storage tank, the filter screen can be controlled to ascend and descend, and a backwashing water path for backwashing the filter screen is further mounted on the water storage tank. When waste gas treatment is carried out, water in the water storage tank is circularly supplied to the spray tower for use by utilizing the spray circulating water supply water path, so that waste gas treatment is carried out through spray treatment. And spraying water sprayed by the spraying tower flows back into the water storage tank, and is filtered by the filter screen to be recycled by the spraying tower. Meanwhile, when filter residues on the filter screen are excessive, the filter screen is lifted, and the filter screen is subjected to back flushing by utilizing the back flushing water path, so that the surface of the filter screen is not easily blocked by particulate matters to influence the filtering efficiency.

Description

Technical Field

[0001] This application relates to the field of waste gas treatment technology, and in particular to an industrial waste gas treatment device. Background Technology

[0002] Industrial waste gas refers to the general term for various pollutant-containing gases emitted into the air during fuel combustion and production processes within a factory premises. These waste gases include: carbon dioxide, carbon disulfide, hydrogen sulfide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, sulfuric acid (mist), lead, mercury, beryllium compounds, soot, and industrial dust. When released into the atmosphere, they pollute the air. These substances enter the human body through the respiratory tract via various pathways; some cause direct harm, while others accumulate and can further endanger human health.

[0003] Currently, in the treatment of industrial waste gas, spraying is commonly used to wet particulate matter, increase its mass, and reduce its suspension time in the air, thus causing dust particles to settle. However, after settling with the spray liquid, dust particles often aggregate, making the filter surface easily clogged by particulate matter during filtration, affecting filtration efficiency. Therefore, further improvements are needed. Utility Model Content

[0004] In order to prevent the surface of the filter screen from being easily clogged by particulate matter and thus affecting the filtration efficiency during the industrial waste gas treatment process, this application provides an industrial waste gas treatment device.

[0005] The industrial waste gas treatment device provided in this application adopts the following technical solution:

[0006] An industrial waste gas treatment device includes a spray tower, a water storage tank, and a spray circulation water supply circuit. The spray circulation water supply circuit is used to circulate water from the water storage tank to the spray tower for use. A horizontally arranged filter screen is installed in the water storage tank for filtering the spray water returning to the water storage tank. The filter screen can be raised and lowered. A backwashing water circuit is also installed on the water storage tank for backwashing the filter screen.

[0007] By adopting the above technical solution, during waste gas treatment, a spray circulation water supply system is used to circulate water from the storage tank to the spray tower for use, thus treating the waste gas through spraying. The spray water from the spray tower returns to the storage tank, is filtered through a filter screen, and can then be reused by the spray tower, forming a circulating water supply system. Simultaneously, when there is excessive filter residue on the filter screen, the screen is raised, and a backwash water system is used to backwash the screen, preventing the surface of the screen from being easily clogged by particulate matter and affecting filtration efficiency.

[0008] Optionally, the spray circulating water supply circuit includes a spray inlet pipe, a spray outlet pipe, and a circulating water pump, wherein one end of the spray inlet pipe is connected to the top of the spray tower and the other end is connected to the bottom of the water storage tank; one end of the spray outlet pipe is connected to the bottom of the spray tower and the other end is connected to the top of the water storage tank; and the circulating water pump is installed on the inlet pipe.

[0009] By adopting the above technical solution, during operation, the spray water after spraying by the spray tower flows back to the water storage tank through the spray outlet pipe for filtration. At the same time, the circulating water pump pumps the water filtered by the filter screen at the bottom of the water storage tank to the spray tower for use through the spray inlet pipe, so as to form a circulating water supply.

[0010] Optionally, a lifting ring platform is installed inside the water storage tank. The lifting ring platform slides up and down along the inner wall of the water storage tank, and the filter screen is installed as a cover on the top of the lifting ring platform. A limiting ring platform is installed on the top of the water storage tank, and the limiting ring platform is connected to the lifting ring platform by a suspension rod. A lifting drive component is installed on the outside of the water storage tank to control the lifting ring platform by controlling the limiting ring platform.

[0011] Optionally, the backwash water circuit includes a backwash water pipe and a backwash water pump installed on the backwash water pipe, with one end of the backwash water pipe connected to the bottom of the water storage tank and the other end connected to the inside of the filter screen; a backwash nozzle is installed on one side of the inner side of the filter screen, and the backwash water pipe supplies water to the backwash nozzle.

[0012] By adopting the above technical solution, during backwashing, the flushing water pump pumps the water filtered by the filter screen at the bottom of the water storage tank through the backwashing water pipe and sends it into the filter screen for backwashing.

[0013] Optionally, an annular pipe is installed on the inner wall of the lifting ring platform, and the backwash water pipe supplies water to the backwash nozzle through the annular pipe, with the backwash nozzle installed circumferentially around the annular pipe.

[0014] By adopting the above technical solution, water can be supplied to the backwash nozzles using a ring pipe during the backwashing process, which can further ensure the backwashing effect.

[0015] Optionally, one of the booms is a hollow tube, and the end of the backwash water pipe away from the backwash water pump is connected to the annular pipe via the boom.

[0016] By adopting the above technical solution and using a hanger rod to connect the backwash water pipe and the ring pipe, the structure can be further simplified.

[0017] Optionally, the filter screen is dome-shaped.

[0018] By adopting the above technical solution, since the filter screen is dome-shaped, the filter residue on the outer surface of the filter screen is more easily washed away during the backwashing process.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. During waste gas treatment, a spray circulation water supply system is used to circulate water from a storage tank to the spray tower for waste gas treatment via spraying. The spray water from the spray tower is returned to the storage tank, filtered through a filter screen, and then reused in the spray tower, forming a circulating water supply system. Simultaneously, when there is excessive filter residue on the filter screen, the screen is raised, and a backwash water system is used to backwash the screen, preventing the surface of the screen from being clogged by particulate matter and affecting filtration efficiency.

[0021] 2. During operation, the spray water from the spray tower flows back to the storage tank through the spray outlet pipe for filtration. At the same time, the circulating water pump pumps the water filtered by the filter screen at the bottom of the storage tank through the spray inlet pipe to the spray tower for use, thus forming a circulating water supply.

[0022] 3. During backwashing, the flushing water pump pumps the water filtered by the filter screen at the bottom of the water tank through the backwashing water pipe and sends it into the filter screen for backwashing. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an industrial waste gas treatment device according to this application.

[0024] Figure 2 This is to illustrate the structural diagram of the backwash water path in this application.

[0025] Figure 3 yes Figure 2 Enlarged view of section A in the middle.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Spray tower; 2. Water storage tank; 3. Spray circulating water supply circuit; 31. Spray inlet pipe; 32. Spray outlet pipe; 33. Circulating water pump; 4. Filter screen; 41. Lifting ring platform; 42. Limiting ring platform; 43. Hanging rod; 44. Lifting drive component; 5. Backwash water circuit; 51. Backwash water pipe; 52. Backwash water pump; 53. Backwash nozzle; 54. Ring pipe; 6. Transition branch pipe. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings 1-3.

[0029] This application discloses an industrial waste gas treatment device.

[0030] Reference Figure 1 An industrial waste gas treatment device includes a spray tower 1, a water storage tank 2, and a spray circulation water supply line 3, wherein the spray circulation water supply line 3 is used to circulate water from the water storage tank 2 to the spray tower 1 for use. A filter screen 4 is installed in the water storage tank 2, and the filter screen 4 is horizontally arranged to filter the spray water returning to the water storage tank 2. In this embodiment, the filter screen 4 can be raised and lowered, and a backwash water line 5 is also installed on the water storage tank 2 for backwashing the filter screen 4.

[0031] During waste gas treatment, the water in the storage tank 2 is circulated to the spray tower 1 via the spray circulation water supply path 3 for waste gas treatment through spraying. The spray water from the spray tower 1 returns to the storage tank 2, is filtered by the filter screen 4, and can then be reused by the spray tower 1, forming a circulating water supply spray system. Simultaneously, when there is excessive filter residue on the filter screen 4, the filter screen 4 is raised, and the backwash water path 5 is used to backwash the filter screen 4, preventing the surface of the filter screen from being easily clogged by particulate matter and affecting filtration efficiency.

[0032] Reference Figure 1 Specifically, in this embodiment, the spray circulation water supply circuit 3 includes a spray inlet pipe 31, a spray outlet pipe 32, and a circulating water pump 33. The circulating water pump 33 is installed in the spray inlet pipe 31, with one end of the spray inlet pipe 31 connected to the top of the spray tower 1 and the other end connected to the bottom of the water storage tank 2. One end of the spray outlet pipe 32 is connected to the bottom of the spray tower 1, and the other end is connected to the top of the water storage tank 2.

[0033] During operation, the spray water from the spray tower 1 flows back to the storage tank 2 through the spray outlet pipe 32 for filtration. At the same time, the circulating water pump 33 pumps the water filtered by the filter screen 4 at the bottom of the storage tank 2 to the spray tower 1 for use through the spray inlet pipe 31, thus forming a circulating water supply.

[0034] Reference Figure 2 Specifically, a lifting ring platform 41 is installed inside the water storage tank 2, and the lifting ring platform 41 is slidably arranged up and down along the inner wall of the water storage tank 2. The filter screen 4 is installed on the top of the lifting ring platform 41 and covers the lifting ring platform 41. A limiting ring platform 42 is installed on the top of the water storage tank 2, and the limiting ring platform 42 is connected to the lifting ring platform 41 by a hanging rod 43. A lifting drive component 44 is installed on the outside of the water storage tank 2. In this embodiment, the lifting drive component 44 is a cylinder, which is vertically arranged upwards, and its piston rod end is connected to the outside of the limiting ring platform 42, so as to control the lifting ring platform to move up and down by controlling the limiting ring platform 42, thereby driving the filter screen 4 to rise or fall.

[0035] In other embodiments, the lifting drive 44 can be a linear motor or other control method.

[0036] Reference Figure 2 In this embodiment, the filter screen 4 is dome-shaped. During backwashing, the filter residue on the outer surface of the filter screen 4 is more easily washed away. In other embodiments, the filter screen 4 may be conical.

[0037] Reference Figure 2 Specifically, in this embodiment, the backwash water path 5 includes a backwash water pipe 51 and a backwash water pump 52 installed on the backwash water pipe 51. The backwash water pipe 51 is a flexible hose, with one end connected to the bottom of the water storage tank 2 and the other end connected to the filter screen 4. A backwash nozzle 53 is installed on one side of the inner surface of the filter screen 4, and the backwash water pipe 51 supplies water to the backwash nozzle 53.

[0038] Reference Figure 2 and Figure 3 Specifically, an annular pipe 54 is installed on the inner wall of the lifting ring platform 41, and a backwash nozzle 53 is installed around the annular pipe 54. The backwash nozzle 53 is connected to the annular pipe 54 and is aligned upwards with the filter screen 4. One of the hangers 43 is a hollow tube. The bottom of the hollow hanger 43 passes through the lifting ring platform 41 via a transition branch pipe 6 and connects to the annular pipe 54. The top of the hollow hanger 43 is connected to the end of the backwash water pipe 51 away from the water storage tank 2, so that the backwash water pipe 51 can supply water to the backwash nozzle 53 through the hollow hanger 43 and the annular pipe 54.

[0039] During backwashing, after the filter screen 4 is completely lifted to the top of the water storage tank 2 along with the lifting ring platform 41, the flushing water pump pumps the water filtered by the filter screen 4 at the bottom of the water storage tank 2 to the backwash nozzle 53 on the inner side of the filter screen through the backwash water pipe 51, hollow hanger 43 and annular pipe 54, so that the filter screen 4 can be backwashed through the backwash nozzle 53, so that the filter residue on the outer side of the filter screen 4 can be washed clean.

[0040] The implementation principle is as follows:

[0041] During waste gas treatment, the spray water from the spray tower 1, after being sprayed, flows back to the storage tank 2 through the spray outlet pipe 32 and is filtered by the filter screen 4 inside the storage tank 2. At the same time, the circulating water pump 33 pumps the water filtered by the filter screen 4 from the bottom of the storage tank 2 to the spray tower 1 for use through the spray inlet pipe 31, thus forming a circulating water supply.

[0042] When there is too much filter residue on the filter screen 4, the filter screen 4 is raised. Using the backwash water path 5, the backwash water pump 52 pumps the water filtered by the filter screen 4 from the bottom of the water storage tank 2 through the backwash water pipe 51, the hollow hanger 43 and the annular pipe 54 to the backwash nozzle 53 on one side of the inner side of the filter screen. The backwash nozzle 53 is used to backwash the filter screen 4 to clean the filter residue on the outer side of the filter screen 4.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An industrial exhaust gas treatment device, characterized by: It includes a spray tower (1), a water storage tank (2), and a spray circulation water supply line (3). The spray circulation water supply line (3) is used to circulate water from the water storage tank (2) to the spray tower (1) for use. A horizontally arranged filter screen (4) is installed in the water storage tank (2) to filter the spray water returning to the water storage tank (2). The filter screen (4) can be raised and lowered. A backwash water line (5) is also installed on the water storage tank (2) to backwash the filter screen (4).

2. The industrial waste gas treatment device according to claim 1, characterized in that: The spray circulation water supply circuit (3) includes a spray inlet pipe (31), a spray outlet pipe (32), and a circulating water pump (33). One end of the spray inlet pipe (31) is connected to the top of the spray tower (1), and the other end is connected to the bottom of the water storage tank (2). One end of the spray outlet pipe (32) is connected to the bottom of the spray tower (1), and the other end is connected to the top of the water storage tank (2). The circulating water pump (33) is installed on the inlet pipe.

3. The industrial waste gas treatment device according to claim 1, characterized in that: A lifting ring platform (41) is installed inside the water storage tank (2). The lifting ring platform (41) slides up and down along the inner wall of the water storage tank (2). The filter screen (4) is installed on the top of the lifting ring platform (41) in a capping manner. A limiting ring platform (42) is installed on the top of the water storage tank (2). The limiting ring platform (42) and the lifting ring platform (41) are connected by a hanging rod (43). A lifting drive component (44) is installed on the outside of the water storage tank (2) to control the lifting ring platform to move up and down by controlling the limiting ring platform (42).

4. The industrial waste gas treatment device according to claim 3, characterized in that: The backwash water path (5) includes a backwash water pipe (51) and a backwash water pump (52) installed on the backwash water pipe (51). One end of the backwash water pipe (51) is connected to the bottom of the water storage tank (2), and the other end is connected to the filter screen (4). A backwash nozzle (53) is installed on one side of the inner side of the filter screen (4), and the backwash water pipe (51) supplies water to the backwash nozzle (53).

5. The industrial waste gas treatment device according to claim 4, characterized in that: The inner wall of the lifting ring platform (41) is equipped with an annular pipe (54), and the backwash water pipe (51) supplies water to the backwash nozzle (53) through the annular pipe (54), and the backwash nozzle (53) is circumferentially installed on the annular pipe (54).

6. The industrial waste gas treatment device according to claim 5, characterized in that: One of the booms (43) is a hollow tube, and the end of the backwash water pipe (51) away from the backwash water pump (52) is connected to the annular pipe (54) through the boom (43).

7. The industrial waste gas treatment device according to claim 1, characterized in that: The filter screen (4) is dome-shaped.

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