Settling structure for recycling heavy metal wastewater

Abstract

The utility model relates to the technical field of wastewater recovery, and discloses a sedimentation structure for heavy metal wastewater recovery, which comprises a sedimentation tank, a sliding connecting pipe, a floating body, an outer sleeve, a pressurizing assembly and a pollution discharge assembly, according to the utility model, firstly, the sedimentation rate of flocculates in wastewater is increased by pressurizing the closed sedimentation tank, meanwhile, the liquid inlet hole for sucking supernatant liquid by the equipment is always kept at the water surface position through the arrangement of the floating body, and when the suction of the supernatant liquid is finished and the floating body is in contact with bottom sediments, the flocculates in the wastewater can be completely settled. As the density of bottom sediments is greater than that of supernatant liquid, the buoyancy applied to the floating body is also increased, and the liquid inlet hole rises to be separated from the liquid level, so that the sediments are prevented from being sucked in, layered suction of the supernatant liquid and lower sediments is realized, the sedimentation rate of the sediments is increased, the separation efficiency of the equipment is improved, and the service life of the equipment is prolonged. And the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater recycling, in particular to a sedimentation structure for heavy metal wastewater recycling. Background Technique

[0002] Industrial wastewater includes production wastewater, production sewage and cooling water, which refers to the wastewater and waste liquid generated in the industrial production process, containing industrial production materials, intermediate products, by-products and pollutants generated in the production process that are lost with water. Industrial wastewater has a wide variety and complex composition. For example, electrolytic salt industrial wastewater contains mercury, heavy metal smelting industrial wastewater contains various metals such as lead and cadmium, and electroplating industrial wastewater contains various heavy metals such as cyanide and chromium. Since industrial wastewater often contains various toxic substances, it pollutes the environment and poses a great harm to human health. Therefore, comprehensive utilization should be developed to turn harm into benefit, and corresponding purification measures should be taken according to the components and concentrations of pollutants in the wastewater before it can be discharged.

[0003] As an important link in sewage treatment, wastewater sedimentation requires a sedimentation tank to provide a reaction site. At present, the commonly used separation method for dust-containing wastewater is natural sedimentation. That is, the heavy metal wastewater slowly flows through the sedimentation tank and then stands for a period of time to make the heavy metal flocs settle naturally. This method requires a relatively long sedimentation time to make the heavy metal flocs settle to the bottom. According to conventional experience, generally, sedimentation for more than 4 hours is required to roughly separate the heavy metal flocs, so the separation efficiency is relatively low. Content of the Utility Model

[0004] The purpose of the utility model is to provide a sedimentation structure for heavy metal wastewater recycling to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] A sedimentation structure for heavy metal wastewater recycling includes a sedimentation tank, a sliding connection pipe, a floating body, an outer sleeve pipe, a pressurizing component and a sewage discharging component;

[0007] A fixed pipe is fixedly connected to the bottom of the inner wall of the sedimentation tank, the sliding connection pipe is fixedly connected to the top of the fixed pipe, a sliding sealing block is slidably connected to the outer wall of the sliding connection pipe, the outer sleeve pipe is fixedly connected to the sliding sealing block, the top of the sliding connection pipe is arranged inside the outer sleeve pipe, a liquid tank is arranged between the outer sleeve pipe and the sliding sealing block, the floating body is fixedly connected to the outside of the sliding sealing block, an air cavity is arranged at the bottom of the floating body, a liquid inlet hole is arranged at the top of the floating body, and the liquid inlet is communicated with the liquid tank. A liquid pump is fixedly connected to the bottom of the sedimentation tank, the liquid inlet end of the liquid pump is communicated with the fixed pipe, and the liquid outlet end of the liquid pump is connected with a liquid discharge port;

[0008] The pressurizing assembly is installed on the top of the settling tank and is used to increase the pressure in the settling tank;

[0009] The sewage discharge assembly is arranged at the bottom of the sedimentation tank and is used for discharging the settled flocculants.

[0010] As a further solution of the utility model: a stopper is fixedly connected to the top of the sliding connecting pipe, and the stopper cooperates with the sliding sealing block.

[0011] As a further solution of the utility model: support legs are fixedly connected to the bottom of the sedimentation tank.

[0012] As a further solution of the utility model: the sewage discharge assembly includes a sewage discharge port arranged at the bottom of the sedimentation tank, a control valve is installed in the sewage discharge port, and a filter head is installed on the liquid inlet hole.

[0013] As a further solution of the utility model: the pressurizing component includes a fixing seat fixedly connected to the top of the sedimentation tank, a plurality of fixing blocks are fixedly connected to the outer wall of the fixing seat, mounting bolts are fixedly connected to the fixing blocks, mounting blocks are slidably mounted on the mounting bolts, mounting blocks are fixedly connected to the mounting frames, a pressurized air pump is mounted on the mounting frames, an air inlet valve is mounted on the air inlet end of the pressurized air pump, and an air outlet end of the pressurized air pump is arranged in the sedimentation tank.

[0014] As a further solution of the utility model: a sealing groove is arranged in the fixing seat, a sealing block is fixedly connected to the bottom of the mounting frame, and the sealing block and the sealing groove cooperate with each other.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model firstly accelerates the sedimentation rate of flocculants in the wastewater by applying pressure to the closed sedimentation tank, and at the same time, the float is set so that the liquid inlet hole of the equipment for absorbing the upper clear liquid is always kept at the water surface. When the upper clear liquid is sucked out and the float contacts the bottom sediment, the buoyancy of the float will increase because the density of the bottom sediment is greater than that of the upper clear liquid. At this time, the liquid inlet hole will rise and leave the liquid surface, thereby avoiding the sediment from being sucked in, thereby realizing the layered absorption of the upper clear liquid and the lower sediment, which accelerates the sedimentation rate of the sediment and at the same time accelerates the separation efficiency of the equipment, thereby improving the practicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a structural schematic diagram of a sedimentation structure for recycling heavy metal wastewater.

[0017] Figure 2 The utility model is a structural schematic diagram of a sedimentation structure for recycling heavy metal wastewater.

[0018] Figure 3It is a schematic internal structure diagram of a sedimentation structure for heavy metal wastewater recovery in the present utility model.

[0019] Figure 4 is Figure 3 a partial enlarged view of point A in

[0020] In the figure: 1 - sedimentation tank, 2 - support leg, 3 - fixed seat, 4 - sealing groove, 5 - fixing block, 6 - mounting bolt, 7 - mounting block, 8 - mounting frame, 9 - sealing block, 10 - pressurized air pump, 11 - intake valve, 12 - sewage outlet, 13 - control valve, 14 - fixed pipe, 15 - sliding connection pipe, 16 - sliding seal block, 17 - floating body, 18 - air cavity, 19 - outer sleeve pipe, 20 - liquid tank, 21 - stop block, 22 - liquid inlet hole, 23 - filter head, 24 - liquid pump, 25 - liquid discharge port. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Refer to Figures 1 to 4In the embodiment of the utility model, a sedimentation structure for heavy metal wastewater recovery includes a sedimentation tank 1, a sliding connection pipe 15, a floating body 17, an outer sleeve 19, a pressurizing component and a sewage discharge component; the bottom of the inner wall of the sedimentation tank 1 is fixedly connected with a fixed pipe 14, the sliding connection pipe 15 is fixedly connected to the top of the fixed pipe 14, the outer wall of the sliding connection pipe 15 is slidably connected with a sliding sealing block 16, the outer sleeve 19 is fixedly connected to the sliding sealing block 16, the top of the sliding connection pipe 15 is arranged in the outer sleeve 19, and a sealing member 16 is provided between the outer sleeve 19 and the sliding sealing block 16. A liquid tank 20 is provided, the float 17 is fixedly connected to the outside of the sliding sealing block 16, an air cavity 18 is provided at the bottom of the float 17, a liquid inlet hole 22 is provided at the top of the float 17, the liquid inlet and the liquid tank 20 are communicated with each other, a liquid pump 24 is fixedly connected to the bottom of the sedimentation tank 1, the liquid inlet end of the liquid pump 24 is communicated with the fixed pipe 14, and the liquid outlet end of the liquid pump 24 is connected to the liquid discharge port 25; the pressurizing component is installed on the top of the sedimentation tank 1, and is used to increase the pressure in the sedimentation tank 1; the sewage discharge component is arranged at the bottom of the sedimentation tank 1, and is used to discharge the settled flocculants. The utility model first The sewage is placed in the sedimentation tank 1, and then the pressurizing component is installed on the top of the sedimentation tank 1, and high-pressure gas is injected into the sedimentation tank 1, so as to pressurize the sewage in the sedimentation tank 1. The greater the pressure, the faster the sedimentation speed of the flocculants in the sewage, thereby accelerating the sedimentation rate of the flocculants in the sewage. After the sedimentation is completed, the liquid in the fixed pipe 14 is sucked by the liquid pump 24, and in this process, the outer sleeve 19 is raised under the drive of the float 17, so that the liquid inlet hole 22 floats on the liquid surface. At this time, with the suction of the liquid pump 24, the liquid in the sedimentation tank 1 is sucked along the liquid inlet hole 2 2 flows into the liquid tank 20, and then enters the sliding connecting pipe 15 along the liquid tank 20, and finally discharges the upper layer of clear liquid in the sedimentation tank 1 through the fixed pipe 14 and the liquid pump 24. When the upper layer of clear liquid is sucked out, the float 17 contacts the bottom sediment. Since the density of the bottom sediment is greater than that of the upper layer of clear liquid, the buoyancy of the float 17 will also increase. At this time, the liquid inlet hole 22 will rise and leave the liquid surface, thereby preventing the sediment from being sucked into the liquid inlet hole 22, thereby completing the separation and absorption of the upper layer of clear liquid and the lower layer of sediment. After the upper layer of clear liquid is absorbed, the sewage discharge assembly can be opened to discharge the sediment from the sedimentation tank 1.

[0023] In one case of this embodiment, see Figures 1 to 4 A stopper 21 is fixedly connected to the top of the sliding connecting tube 15, and the stopper 21 cooperates with the sliding sealing block 16. The utility model limits the maximum sliding height between the outer sleeve 19 and the sliding connecting tube 15 through the cooperation between the stopper 21 and the sliding sealing block 16, thereby preventing the outer sleeve 19 from falling off the sliding connecting tube 15.

[0024] In one case of this embodiment, see Figures 1 to 4, the bottom of the settling tank 1 is fixedly connected with support legs 2, and the present utility model supports and fixes the settling tank 1 through the arrangement of the support legs 2.

[0025] In one case of this embodiment, please refer to Figures 1 to 4 , the sewage discharge assembly includes a sewage discharge port 12 arranged at the bottom of the settling tank 1, a control valve 13 is installed in the sewage discharge port 12, a filter head 23 is installed on the liquid inlet hole 22, and the sewage discharge assembly first filters the liquid inlet hole 22 through the arrangement of the filter head 23, so as to prevent the flocculants from being sucked into the liquid inlet hole 22. After the sewage is discharged, the staff can open the control valve 13 to extract the settled flocculants along the sewage discharge port 12.

[0026] In one case of this embodiment, please refer to Figures 1 to 4 , the pressurizing assembly includes a fixed seat 3 fixedly connected to the top of the settling tank 1, multiple fixed blocks 5 are fixedly connected to the outer wall of the fixed seat 3, mounting bolts 6 are fixedly connected to the fixed blocks 5, a mounting block 7 is slidably installed on the mounting bolts 6, a mounting frame 8 is fixedly connected to the mounting block 7, a pressurizing air pump 10 is installed on the mounting frame 8, an air inlet valve 11 is installed on the air inlet end of the pressurizing air pump 10, and the air outlet end of the pressurizing air pump 10 is arranged inside the settling tank 1. The pressurizing assembly first fixes the mounting block 7 on the fixed block 5 through the arrangement of the mounting bolts 6, so as to install the mounting frame 8 in the filling port of the settling tank 1, and then injects compressed external gas into the settling tank 1 through the pressurizing air pump 10, thereby increasing the pressure of the sewage in the settling tank 1. The greater the pressure, the faster the settling speed of the flocculants in the sewage.

[0027] In one case of this embodiment, please refer to Figures 1 to 4 , a sealing groove 4 is arranged inside the fixed seat 3, a sealing block 9 is fixedly connected to the bottom of the mounting frame 8, and the sealing block 9 is matched with the sealing groove 4. The present utility model seals the settling tank 1 through the mutual cooperation of the sealing groove 4 and the sealing block 9.

[0028] The above shows and describes the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sedimentation structure for heavy metal wastewater recovery, characterized in that, It includes a sedimentation tank, a sliding connection pipe, a floating body, an outer sleeve pipe, a pressurizing component and a sewage discharging component; A fixed pipe is fixedly connected to the bottom of the inner wall of the sedimentation tank. The sliding connection pipe is fixedly connected to the top of the fixed pipe. A sliding seal block is slidably connected to the outer wall of the sliding connection pipe. The outer sleeve pipe is fixedly connected to the sliding seal block. The top of the sliding connection pipe is arranged inside the outer sleeve pipe. A liquid tank is arranged between the outer sleeve pipe and the sliding seal block. The floating body is fixedly connected to the outside of the sliding seal block. An air cavity is arranged at the bottom of the floating body. A liquid inlet hole is arranged at the top of the floating body. The liquid inlet is communicated with the liquid tank. A liquid pump is fixedly connected to the bottom of the sedimentation tank. The liquid inlet end of the liquid pump is communicated with the fixed pipe. The liquid outlet end of the liquid pump is connected with a liquid discharge port; The pressurizing component is installed on the top of the sedimentation tank and is used for pressurizing the inside of the sedimentation tank; The sewage discharging component is arranged at the bottom of the sedimentation tank and is used for discharging the settled flocculants.

2. The sedimentation structure for heavy metal wastewater recovery according to claim 1, wherein, A stop block is fixedly connected to the top of the sliding connection pipe. The stop block cooperates with the sliding seal block.

3. The sedimentation structure for heavy metal wastewater recovery according to claim 1, wherein, Support legs are fixedly connected to the bottom of the sedimentation tank.

4. A sedimentation structure for heavy metal wastewater recovery according to claim 1, characterized in that, The sewage discharging component includes a sewage discharge port arranged at the bottom of the sedimentation tank. A control valve is installed in the sewage discharge port. A filter head is installed on the liquid inlet hole.

5. A sedimentation structure for heavy metal wastewater recovery according to claim 1, characterized in that, The pressurizing component includes a fixed seat fixedly connected to the top of the sedimentation tank. Multiple fixed blocks are fixedly connected to the outer wall of the fixed seat. An installation bolt is fixedly connected to the fixed block. An installation block is slidably installed on the installation bolt. An installation frame is fixedly connected to the installation block. A pressurizing air pump is installed on the installation frame. An air inlet valve is installed on the air inlet end of the pressurizing air pump. The air outlet end of the pressurizing air pump is arranged inside the sedimentation tank.

6. The sedimentation structure for heavy metal wastewater recovery according to claim 5, characterized in that, A sealing groove is arranged inside the fixed seat. A sealing block is fixedly connected to the bottom of the installation frame. The sealing block cooperates with the sealing groove.

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