Acid-base neutralization treatment device for chemical sewage

Abstract

The utility model discloses a chemical sewage acid-base neutralization treatment device which comprises a first rack and an acid-base neutralization treatment tank, the acid-base neutralization treatment tank comprises a tank body, a cover plate and a turbine blade, the turbine blade is rotationally assembled on the inner bottom wall of the tank body, and the cover plate is arranged on the first rack. The bottom of the left side and the bottom of the right side of the tank body are respectively provided with a sewage pipe and a first slag discharging pipe, the top of the cover plate is provided with a neutralizer pipe, and the left side and the right side of the cover plate are respectively provided with a cleaning pipe and a first water pumping pipe. According to the technical scheme, a stirring function part of an existing chemical sewage acid-base neutralization treatment device is structurally optimized, a multi-blade stirring paddle is replaced by the turbine paddle, maintenance operation of the paddle can be conveniently and rapidly implemented in a soaking cleaning mode, the cover plate of a conical surface cavity structure is matched, and under rotation of the turbine paddle, the stirring function of the chemical sewage acid-base neutralization treatment device is greatly improved. The mixing effect of the sewage and the neutralizer can be ensured, and the mixing effect and the cleaning efficiency are both considered.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a device for acid-base neutralization treatment of chemical sewage. Background Art

[0002] The acid-base neutralization reaction refers to a chemical reaction in which an acid and a base react to form a salt and water under certain conditions. In this process, the acidic and basic properties of the acid and the base are weakened or disappear, and at the same time, the formed salt is composed of hydrogen ions in the acid and hydroxide ions in the base. When the salt formed after acid-base neutralization reaches a certain supersaturation in the solution, the salt substance will gradually crystallize with the volatilization of water molecules to form solid crystals. Especially in acid-base reactions with relatively high concentrations, the solubility of the formed salt is relatively low, and crystallization is more likely to occur.

[0003] At present, most of the existing devices for acid-base neutralization treatment of chemical sewage use stirring paddles to achieve uniform mixing of sewage and neutralizing agents, so as to promote chemical reactions and improve treatment efficiency. The shape and number of the stirring paddle blades have an important impact on the mixing effect. Generally, the more paddle blades and the more complex the shape, the better the mixing effect. However, after long-term use, the stirring paddle blades will be attached with crystals of salt impurities, which will affect the stirring efficiency. If there is too much crystallization, it may also affect the normal operation of the reactor. Therefore, it is necessary for the staff to regularly clean the stirring paddle blades. For the current multi-blade stirring paddles, whether using the cleaning method of flushing or soaking, the operation is very inconvenient. For example, for flushing, multi-angle operations are required, and for soaking, the liquid level of the cleaning liquid needs to be higher than the paddle blades. For the cleaning work of the paddle blades at high positions, a large amount of cleaning liquid is required, increasing the maintenance cost. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a device for acid-base neutralization treatment of chemical sewage, which solves the problem that the operation of the multi-blade stirring paddle of the current device for acid-base neutralization treatment of industrial sewage is very inconvenient whether using the cleaning method of flushing or soaking.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A device for acid-base neutralization treatment of chemical sewage includes a first frame and an acid-base neutralization treatment tank mounted on the first frame. The acid-base neutralization treatment tank includes a tank body, a cover plate in a conical cavity structure, and a turbine paddle. The cover plate is covered and assembled on the tank body to form a receiving cavity for installing the turbine paddle. The turbine paddle is rotationally assembled on the inner bottom wall of the tank body through a servo motor. The left and right bottom sides of the tank body are respectively provided with a sewage pipe and a first slag discharge pipe communicating with its interior. The top of the cover plate is provided with a neutralizing agent pipe, and the left and right sides of the cover plate are respectively provided with a cleaning pipe and a first water pumping pipe communicating with its interior.

[0006] Preferably, the cover plate is flange-connected to the top of the tank body. A extending edge that fits and mates with the inner wall of the opening of the tank body is provided at the bottom of the cover plate. A first washer is provided between the flange edge of the cover plate and the flange edge of the tank body. Herein, the cover plate covers the top of the tank body. On the one hand, it realizes the encapsulation of the top of the tank body. On the other hand, its design of a conical cavity structure cooperates with the turbine blade to achieve flipping and stirring. Preferably, by providing a extending edge that extends vertically downward at the bottom of the cover plate and fits and mates with the inner wall of the opening of the tank body, and cooperating with the first washer coaxially disposed between the flange edge of the cover plate and the flange edge of the tank body, the sealing performance of the cover plate at the opening of the top of the tank body is further ensured.

[0007] Preferably, the servo motor is fixedly installed on the outer bottom wall of the tank body. The output end of the servo motor penetrates through the tank body and is rotatably connected to the tank body through a sealed bearing. The turbine blades are distributed along the horizontal plane and are coaxially and fixedly installed at the output end of the servo motor. Herein, the servo motor provides the driving force for the rotation of the turbine blades in the tank body. The servo motor is fixedly installed on the outer bottom wall of the tank body. Its output end penetrates through the tank body and extends into the interior of the tank body and is provided with a mounting disk coaxially distributed therewith. The turbine blades are coaxially and fixedly installed on the mounting disk by screws. Preferably, the output end of the servo motor is rotatably connected to the tank body through a sealed bearing, ensuring the sealing performance at the rotational connection between the output end of the servo motor and the tank body.

[0008] Preferably, the neutralizer pipe is distributed vertically and covers the opening at the top of the cover plate. A second washer is provided between the bottom end of the neutralizer pipe and the opening at the top of the cover plate. Herein, the neutralizer pipe is assembled vertically at the opening at the top of the cover plate. Preferably, by providing a second washer between the bottom end of the neutralizer pipe and the opening at the top of the cover plate, the sealing performance of the neutralizer pipe at the opening at the top of the cover plate is ensured.

[0009] Preferably, it further includes a sedimentation tank erected outside the acid-base neutralization treatment tank through a second rack. Water inlet pipes and second pump water pipes are respectively provided at the top parts on the left and right sides of the sedimentation tank. A plurality of inclined pipe collecting hoppers arranged side by side are provided at the bottom of the sedimentation tank. Second slag discharge pipes are provided at the bottoms of all the plurality of inclined pipe collecting hoppers. Herein, for the salts generated by the acid-base neutralization reaction, their solubility and stability are different. Some salts will form insoluble precipitates under specific conditions and thus separate from the solution. This is the basis for the sedimentation tank to treat salts. The sedimentation tank is used for the treatment of salts and other impurities pumped out by the first pump water pipe of the acid-base neutralization treatment tank. The salts and other impurities precipitate into the inclined pipe collecting hoppers and are finally discharged through the second slag discharge pipes. The clear water on the upper layer in the sedimentation tank can be pumped out through the second pump water pipe.

[0010] Preferably, the water inlet pipe is connected to the first water pump pipe through an external pipe, and the inner ends of the second water pump pipe and the first water pump pipe respectively penetrate the sedimentation box and the cover plate and extend downward in the vertical direction. The first water pump pipe and the second water pump pipe both need to lead out pump water, and the inner ends of the first water pump pipe and the second water pump pipe are both set as vertical distribution sections and extend downward to the bottom to ensure the stability of the water diversion.

[0011] Preferably, a bypass branch pipe is also included on the sewage pipe, and the second pump water pipe is connected to the bypass branch pipe through an external pipe. After cleaning, the turbine blades need to be rinsed, and the clean water drawn from the second pump water pipe can realize secondary recycling of resources, improve resource utilization, and reduce production costs.

[0012] Therefore, the beneficial effects of the present invention are as follows: by optimizing the structure of the stirring function part of the current chemical wastewater acid-base neutralization treatment device, the more common multi-blade stirring paddle is replaced with a turbine blade with a smaller space occupancy rate, and the maintenance of the blade can be conveniently carried out by immersion cleaning. At the same time, with the cover plate with a conical cavity structure, the mixing effect of the sewage and the neutralizer can be ensured under the rotation of the turbine blade. Compared with the current multi-blade stirring paddle, a balance between mixing effect and cleaning efficiency is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the utility model.

[0015] Figure 3 It is a schematic diagram of the dissected structure of the utility model.

[0016] Figure 4 It is a schematic diagram of the installation structure of the tank body and the cover plate of the utility model.

[0017] Figure 5 It is a schematic diagram of the installation structure of the cover plate and the neutralizer tube of the utility model.

[0018] Figure 6 It is a structural schematic diagram of the sedimentation box of the utility model.

[0019] In the figure: 100, the first rack; 200, the acid-base neutralization treatment tank; 210, the tank body; 220, the cover plate; 230, the turbine impeller; 240, the servo motor; 250, the sewage pipe; 260, the first slag discharge pipe; 270, the neutralizing agent pipe; 280, the cleaning pipe; 290, the first pump water pipe; 2210, the extended edge; 2220, the first gasket; 2510, the bypass branch pipe; 2710, the second gasket; 300, the second rack; 400, the sedimentation tank; 410, the water inlet pipe; 420, the second pump water pipe; 430, the inclined pipe collecting hopper; 440, the second slag discharge pipe. Detailed implementation manners

[0020] The following further describes the present utility model in conjunction with the accompanying drawings and detailed implementation manners.

[0021] Please refer to Figure 1-6 , the present utility model provides a chemical sewage acid-base neutralization treatment device: a first rack 100 and an acid-base neutralization treatment tank 200 mounted on the first rack 100. The acid-base neutralization treatment tank 200 includes a tank body 210 and a cover plate 220 in the shape of a conical cavity structure, as well as a turbine impeller 230. The cover plate 220 is covered and assembled on the tank body 210 to form a receiving cavity for installing the turbine impeller 230. The turbine impeller 230 is rotationally assembled on the inner bottom wall of the tank body 210 through a servo motor 240. The bottom parts on the left and right sides of the tank body 210 are respectively provided with a sewage pipe 250 and a first slag discharge pipe 260 that are communicated with its interior. The top of the cover plate 220 is provided with a neutralizing agent pipe 270. The left and right sides of the cover plate 220 are respectively provided with a cleaning pipe 280 and a first pump water pipe 290 that are communicated with its interior.

[0022] Based on the above-mentioned structural setting, the chemical wastewater acid-base neutralization treatment device is composed of a first frame 100 and an acid-base neutralization treatment tank 200, wherein the acid-base neutralization treatment tank 200 is arranged on the ground through the first frame 100, and the first frame 100 provides structural support for the installation of the acid-base neutralization treatment tank 200, and the acid-base neutralization treatment tank 200 is connected to the chemical wastewater pipeline to introduce the chemical wastewater into the tank body 210 through the sewage pipe 250 for neutralization treatment. Specifically, during the working process, the chemical wastewater entering the tank body 210 through the sewage pipe 250 is divided into two situations. If the sewage is acidic wastewater, the neutralizer pipe 27 0 input is an alkaline neutralizer, such as sodium hydroxide, potassium hydroxide, etc. If the sewage is alkaline wastewater, the neutralizer pipe 270 inputs an acidic neutralizer, such as sulfuric acid, hydrochloric acid, etc. After the wastewater enters the tank body 210, the neutralizer pipe 270 puts the corresponding neutralizer into the tank body 210. Driven by the servo motor 240, the turbine blade 230 rotates and drives the wastewater and the neutralizer to start mixing. The wastewater and the neutralizer gather toward the edge of the tank body 210 under the rotation of the turbine blade 230, and go up under the obstruction of the tank body 210, and finally cooperate with the cover plate 220 with a conical cavity structure to form a cyclic flip stirring mode, and the wastewater and the neutralizer are stirred. During the stirring process of the agent, a neutralization reaction is carried out simultaneously, so that the wastewater reaches a neutral or nearly neutral state, and generates water and corresponding salts. After stopping the stirring, the solution after the neutralization reaction is output from the first pump water pipe 290 for subsequent precipitation, and the acid-base neutralization treatment tank 200 is cleaned. During the cleaning process, the operator puts 2% sodium hydroxide solution into the tank body 210 through the cleaning pipe 280, so that the liquid level of the sodium hydroxide solution is higher than the turbine blades 230, and the turbine blades 230 are first soaked, and then the turbine blades 230 are driven by the servo motor 240, and further cleaning is carried out in conjunction with the stirring system. After cleaning, it can be rinsed through an external water channel, and the waste liquid after rinsing is discharged from the first slag discharge pipe 260. The chemical wastewater acid-base neutralization treatment device optimizes the structure of the stirring function part of the current chemical wastewater acid-base neutralization treatment device, and replaces the more common multi-blade stirring paddle with a turbine blade 230 with a smaller space occupancy rate. For the maintenance of the blade, the immersion cleaning method can be conveniently implemented. At the same time, with the cover plate 220 with a conical cavity structure, the mixing effect of the sewage and the neutralizer can be ensured under the rotation of the turbine blade 230. Compared with the current multi-blade stirring paddle, it achieves a balance between mixing effect and cleaning efficiency.

[0023] Furthermore, the cover plate 220 is connected to the top flange of the tank body 210, and the bottom of the cover plate 220 is provided with an extended edge 2210 that fits the inner wall of the opening of the tank body 210, and a first gasket 2220 is provided between the flange edge of the cover plate 220 and the flange edge of the tank body 210.

[0024] Further, the servo motor 240 is fixedly installed on the outer bottom wall of the tank body 210. The output end of the servo motor 240 penetrates through the tank body 210 and is rotatably connected to the tank body 210 through a sealed bearing. The turbine blade 230 is distributed along the horizontal plane and coaxially fixedly installed at the output end of the servo motor 240.

[0025] Further, the neutralizer pipe 270 is distributed along the vertical direction and covers the opening at the top of the cover plate 220. A second gasket 2710 is provided between the bottom end of the neutralizer pipe 270 and the opening at the top of the cover plate 220.

[0026] Further, it further includes a sedimentation tank 400 erected outside the acid-base neutralization treatment tank 200 through a second frame 300. Water inlet pipes 410 and second pump water pipes 420 are respectively provided at the tops of the left and right sides of the sedimentation tank 400. A plurality of inclined pipe collecting hoppers 430 arranged side by side are provided at the bottom of the sedimentation tank 400. Second slag discharge pipes 440 are provided at the bottoms of the plurality of inclined pipe collecting hoppers 430.

[0027] Further, the water inlet pipe 410 is connected to the first pump water pipe 290 through an external pipeline. The inner ends of the second pump water pipe 420 and the first pump water pipe 290 respectively penetrate through the sedimentation tank 400 and the cover plate 220 and both extend vertically downward.

[0028] Further, it further includes a bypass branch pipe 2510 provided on the sewage pipe 250. The second pump water pipe 420 is connected to the bypass branch pipe 2510 through an external pipeline. The above-described embodiments are only a preferred solution of the present invention and do not impose any form of limitation on the present invention. There are other variations and modifications without exceeding the technical solutions recorded in the claims.

Claims

1. A chemical wastewater acid-base neutralization treatment device, characterized in that: The invention comprises a first frame (100) and an acid-base neutralization treatment tank (200) mounted on the first frame (100); the acid-base neutralization treatment tank (200) comprises a tank body (210), a cover plate (220) in a conical cavity structure, and a turbine blade (230); the cover plate (220) covers and is mounted on the tank body (210) to form a receiving cavity for mounting the turbine blade (230); the turbine blade (230) is rotatably mounted on the inner bottom wall of the tank body (210) by a servo motor (240); a sewage pipe (250) and a first slag discharge pipe (260) are respectively provided at the bottom of the left and right sides of the tank body (210) and are connected to the inside thereof; a neutralizer pipe (270) is installed at the top of the cover plate (220); and a cleaning pipe (280) and a first pump water pipe (290) are respectively provided at the left and right sides of the cover plate (220) and are connected to the inside thereof.

2. A chemical wastewater acid-base neutralization treatment device according to claim 1, characterized in that: The cover plate (220) is connected to the top flange of the tank body (210), and the bottom of the cover plate (220) is provided with an extended edge (2210) that fits the inner wall of the opening of the tank body (210), and a first gasket (2220) is provided between the flange edge of the cover plate (220) and the flange edge of the tank body (210).

3. The acid-base neutralization treatment device for chemical wastewater according to claim 1 is characterized in that: The servo motor (240) is fixedly mounted on the outer bottom wall of the tank body (210); the output end of the servo motor (240) passes through the tank body (210) and is rotationally connected to the tank body (210) via a sealed bearing; and the turbine blades (230) are distributed along a horizontal plane and are coaxially fixedly mounted on the output end of the servo motor (240).

4. The acid-base neutralization treatment device for chemical wastewater according to claim 1 is characterized in that: The neutralizer tube (270) is distributed in the vertical direction and covers the opening at the top of the cover plate (220), and a second gasket (2710) is provided between the bottom end of the neutralizer tube (270) and the opening at the top of the cover plate (220).

5. The acid-base neutralization treatment device for chemical wastewater according to claim 1, characterized in that: It also includes a sedimentation box (400) mounted on the outside of the acid-base neutralization treatment tank (200) via a second frame (300), a water inlet pipe (410) and a second pump water pipe (420) being respectively provided at the tops of the left and right sides of the sedimentation box (400), a plurality of inclined tube collection buckets (430) arranged side by side being provided at the bottom of the sedimentation box (400), and a second slag discharge pipe (440) being provided at the bottom of each of the plurality of inclined tube collection buckets (430).

6. A chemical wastewater acid-base neutralization treatment device according to claim 5, characterized in that: The water inlet pipe (410) is connected to the first water pump pipe (290) via an external pipe, and the inner ends of the second water pump pipe (420) and the first water pump pipe (290) respectively penetrate the sedimentation tank (400) and the cover plate (220) and both extend downward in the vertical direction.

7. The acid-base neutralization treatment device for chemical wastewater according to claim 5, characterized in that: It also includes a bypass branch pipe (2510) arranged on the sewage pipe (250), and the second pump water pipe (420) is connected to the bypass branch pipe (2510) through an external pipe.

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