Wastewater heavy metal collection device

Abstract

The application discloses a wastewater heavy metal collecting device, which comprises a heating furnace, a water storage tank and a furnace can connected with a burner arranged in the heating furnace, a first smoke hood is sleeved on one end of the furnace can, a gas outlet pipe is communicated on the other end, a second smoke hood is sleeved on the gas outlet pipe, a gas guide pipe is inserted into the second smoke hood and arranged on the heating furnace, a fire pipe is sleeved between the first smoke hood and the second smoke hood, a collecting tank communicated with a feeding pipe is arranged in the water storage tank, a feeding opening is communicated on the feeding pipe, a stirring device is arranged on one side of the collecting tank, and a condenser is communicated on the other side; a discharging pipe penetrating through the water storage tank is communicated on the collecting tank. The furnace can and the fire pipe are arranged to rapidly heat water, the condenser guarantees the concentration during the wastewater heating reaction, the stirring device is arranged to guarantee that the wastewater is uniformly heated and the heavy metal precipitation reaction is uniform, and the device is compact, practical and convenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to a wastewater heavy metal collection device. BACKGROUND

[0002] According to the current environmental pollution situation and the existing treatment technology in China, in the treatment process of wastewater containing heavy metal ions, the most commonly used method is chemical precipitation, which converts heavy metal ions in the solution into compounds insoluble in water. Although this method is simple and convenient to operate, its environmental adaptability is poor, and the temperature change of the outside environment can easily affect the efficiency of heavy metal reaction precipitation, the treatment procedure becomes complex accordingly, and the treatment cost is high. Since the concentration changes during the solution reaction process, the compound treatment process is not mature in the commonly used method, and secondary pollution is easily caused. SUMMARY

[0003] In view of the above problems of the prior art, the technical problem to be solved by the present application is to provide a wastewater heavy metal collection device which can ensure stable solution reaction concentration and constant temperature reaction.

[0004] To solve the above technical problems, one technical scheme of the present application is as follows: a wastewater heavy metal collection device, comprising a heating furnace, a water storage tank, and a furnace tube connected with a burner and arranged in the heating furnace, a first smoke hood is sleeved on one end of the furnace tube, a ventilation pipe is communicated at the other end, a second smoke hood is sleeved on the ventilation pipe, a gas guide pipe is inserted at a position corresponding to the second smoke hood on the heating furnace, the insertion end of the gas guide pipe extends into the second smoke hood, a plurality of fire pipes are sleeved between the first smoke hood and the second smoke hood, a collection tank is arranged in the water storage tank and communicated with a feeding pipe, a feeding opening is communicated on the feeding pipe, a stirring device is arranged on one side of the collection tank, and a condenser is communicated on the other side, the condenser comprises a condenser pipe inserted into the collection tank, a fixing seat is arranged in the condenser pipe, a hollow spring pipe is arranged on the fixing seat and communicated with the collection tank, an air bag is further communicated on one side of the hollow spring pipe, a support ring is arranged in the condenser pipe at a position corresponding to the air bag, and the inner side wall of the support ring is attached to the outer side wall of the air bag.

[0005] The inner wall of the heating furnace and the outer wall of the furnace tube form a cavity body communicated with the water storage tank, and a discharge pipe is communicated on the collection tank and penetrates out of the water storage tank.

[0006] The structure is adopted, water is injected into the cavity body and the water storage tank, and gas leakage phenomenon is inevitably generated after the electromagnetic valve of the burner runs for a long time. Therefore, the furnace barrel is purged for at least three minutes before ignition, so that the leaked gas in the furnace barrel is discharged into the atmosphere through the air pipe and the gas guide pipe, so as to prevent instantaneous explosion caused by ignition and starting from causing boiler explosion accident. After the burner is ignited, the flame extends into the furnace barrel, the wall attachment effect of the hot gas flow is utilized, the high-temperature gas flow formed by combustion is attached to the inner wall of the furnace barrel and moves into the first smoke hood, and then enters the fire tube, and then is collected into the second smoke hood, and then the tail gas is discharged through the gas guide pipe. This is the process of heating the fire tube and heating the injected water by heat transfer of the fire tube. During the heating process, the stirring device is used to make the waste water uniformly heated, the steam formed after the waste water is heated enters the condenser, the steam is condensed into water after being cooled, and then the water is returned to the collection tank, so as to ensure the stability of the concentration of the waste water. In order to be suitable for heating and precipitation of various heavy metals in waste water, a feeding port is arranged on the feeding pipe, so that a reaction reagent can be added. At the same time, the reaction reagent is fully mixed with the waste water under the stirring action of the stirring device, so that the reaction is uniform under the premise of uniform heating, the precipitation efficiency of heavy metals is improved, and the precipitated heavy metals are discharged through the discharge pipe. The structure is simple and convenient to operate.

[0007] In order to improve the heat dissipation efficiency, as a preferred, jet-like fins are arranged on the outer side walls of the furnace barrel, the first smoke hood and the second smoke hood.

[0008] In order to simplify the structure and facilitate installation, and accelerate the efficiency of heat transfer, as a preferred, a first fixing plate is sleeved on one end of the furnace barrel, a first smoke hood is sleeved on the first fixing plate, a second fixing plate is sleeved on the air pipe, and a second smoke hood is sleeved on the second fixing plate. A plurality of front fixing holes are arranged on the first fixing plate, a rear fixing hole is arranged on the second fixing plate at a position corresponding to the front fixing hole, a fire tube is inserted between the front fixing hole and the rear fixing hole corresponding to the position, and helical fins are arranged on the outer side wall of the fire tube.

[0009] In order to simplify the structure and facilitate installation, as a preferred, the stirring device comprises a power motor fixed on the collection tank, a connecting rod extending into the collection tank is arranged on the output end of the power motor, and a stirring impeller is screwed and fixed on the extending end of the connecting rod.

[0010] In order to improve the condensation efficiency, as a preferred, a water inlet pipe is communicated with the condenser pipe at a position corresponding to the fixing seat, and a water outlet pipe is communicated with the condenser pipe at a position corresponding to the air bag.

[0011] In order to prolong the condensation path of the steam, as a preferred, the hollow spring pipe is in a spiral structure.

[0012] In order to observe the water level and ensure the pressure stability when the water is heated, as preferred, a first liquid level pipe is vertically communicated on one side of the water storage tank, a gas outlet pipe is communicated on the upper end of the first liquid level pipe and extends into the water storage tank, and an exhaust valve is arranged on the upper end of the first liquid level pipe corresponding to the position of the gas outlet pipe.

[0013] In order to observe the water level and avoid the waste water from overflowing when heated, as preferred, a second liquid level pipe is vertically communicated on one side of the collection tank, a connecting pipe is communicated on the upper end of the second liquid level pipe and extends into the collection tank, an exhaust pipe is arranged on the upper end of the second liquid level pipe corresponding to the position of the connecting pipe, and a solenoid valve is arranged on the exhaust pipe.

[0014] In order to flush the collection tank and save the water cost, as preferred, a water injection pipe is communicated on the heating furnace, a drain pipe is communicated on the water injection pipe, a pressure pump is arranged on the water outlet end of the drain pipe, and a flushing pipe extending into the collection tank is arranged on the water outlet end of the pressure pump.

[0015] Beneficial effects: The furnace tube and the fire tube are arranged to quickly heat the water, the condenser ensures the concentration of the waste water during the heating reaction, the stirring device is arranged to ensure the uniform heating of the waste water and the uniform precipitation of the heavy metals, the structure is compact and practical, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, form a part of the present application, and the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic view of the present application.

[0018] Figure 2 It is an enlarged view of A in Figure 1

[0019] Figure 3 It is a left view of Figure 1

[0020] Figure 4 It is a top view of Figure 1

[0021] Figure 5 It is a structural schematic view of the furnace tube.

[0022] Figure 6 It is a structural schematic view of the installation of the furnace tube and the fire tube.

[0023] The meanings of the reference numerals in the drawings are as follows:

[0024] ​​​Burner-1; furnace-10; first smoke cover-101; second smoke cover-102; air guide pipe-103; jet-like fin-104; cavity body-11; fire tube-12; first fixed plate-13; second fixed plate-14; air pipe-15; spiral fin-121;

[0025] Heating furnace-2; drain pipe-20; pressure pump-21; flushing pipe-22; water injection pipe-23;

[0026] Water storage tank-3; first liquid level pipe-30; air outlet pipe-31; exhaust valve-32; collection tank-4; feed pipe-40; discharge pipe-41; connecting rod-42; stirring impeller-43; power motor-44; feeding port-45;

[0027] Condenser pipe-5; fixed seat-50; water inlet pipe-51; water outlet pipe-52; hollow spring pipe-53; air bag-54; support ring-55; second liquid level pipe-60; connecting pipe-61; exhaust pipe-62; electromagnetic valve-63; first thermocouple-71; second thermocouple-72. DETAILED DESCRIPTION

[0028] As shown in Figures 1 to 6 The present application comprises a heating furnace 2, a water storage tank 3, and a furnace 10 connected with a burner 1 arranged in the heating furnace 2, a first smoke cover 101 is sleeved on one end of the furnace 10, and an air pipe 15 is communicated on the other end, a second smoke cover 102 is sleeved on the air pipe 15, a gas guide pipe 103 is inserted at a position corresponding to the second smoke cover 102 on the heating furnace 2, the insertion end of the gas guide pipe 103 extends into the second smoke cover 102, a plurality of fire tubes 12 are sleeved between the first smoke cover 101 and the second smoke cover 102, a collection tank 4 with a feed pipe 40 is arranged in the water storage tank 3, a feeding port 45 is communicated on the feed pipe 40, a stirring device is arranged on one side of the collection tank 4, and a condenser is communicated on the other side; a cavity body 11 is formed between the inner wall of the heating furnace 2 and the outer wall of the furnace 10, which is communicated with the water storage tank 3, and a discharge pipe 41 is communicated on the collection tank 4 and extends out of the water storage tank 3.

[0029] Specifically, a first fixed plate 13 is sleeved on one end of the furnace 10, a first smoke hood 101 is sleeved on the first fixed plate 13, a second fixed plate 14 is sleeved on the air pipe 15, and a second smoke hood 102 is sleeved on the second fixed plate 14; a plurality of front fixed holes are arranged on the first fixed plate 13, rear fixed holes are arranged on the second fixed plate 14 at positions corresponding to the front fixed holes, a fire pipe 12 is inserted between the front fixed hole and the rear fixed hole at a corresponding position, and helical fins 121 are arranged on the outer side wall of the fire pipe 12; jet-shaped fins 104 are arranged on the outer side walls of the furnace 10, the first smoke hood 101 and the second smoke hood 102.

[0030] The stirring device comprises a power motor 44 fixed on the collecting tank 4, an output end of the power motor 44 is provided with a connecting rod 42 extending into the collecting tank 4, and a stirring impeller 43 is screw-connected and fixed on the extending end of the connecting rod 42.

[0031] The condenser comprises a condensing pipe 5 inserted into the collecting tank 4, a fixed seat 50 is arranged in the condensing pipe 5, a hollow spring pipe 53 in communication with the collecting tank 4 is arranged on the fixed seat 50, the hollow spring pipe 53 has a spiral structure, a gas bag 54 is further arranged in communication on one side of the hollow spring pipe 53, a supporting ring 55 is arranged in the condensing pipe 5 at a position corresponding to the gas bag 54, and the inner side wall of the supporting ring 55 is attached to the outer side wall of the gas bag 54.

[0032] A water inlet pipe 51 is arranged in communication on the condensing pipe 5 at a position corresponding to the fixed seat 50, and a water outlet pipe 52 is arranged in communication on the condensing pipe 5 at a position corresponding to the gas bag 54.

[0033] A first liquid level pipe 30 is vertically arranged in communication on one side of the water storage tank 3, a gas outlet pipe 31 extending into the water storage tank 3 is arranged in communication on the upper end of the first liquid level pipe 30, and a gas discharge valve 32 is arranged on the upper end of the first liquid level pipe 30 at a position corresponding to the gas outlet pipe 31; a second liquid level pipe 60 is vertically arranged in communication on one side of the collecting tank 4, a connecting pipe 61 extending into the collecting tank 4 is arranged in communication on the upper end of the second liquid level pipe 60, and a gas discharge pipe 62 is arranged on the upper end of the second liquid level pipe 60 at a position corresponding to the connecting pipe 61, and an electromagnetic valve 63 is arranged on the gas discharge pipe 62.

[0034] A water injection pipe 23 is arranged in communication on the heating furnace 2, a water discharge pipe 20 is arranged in communication on the water injection pipe 23, a pressure pump 21 is arranged on the water outlet end of the water discharge pipe 20, and a flushing pipe 22 extending into the collecting tank 4 is arranged on the water outlet end of the pressure pump 21.

[0035] The use principle of the present application is as follows:

[0036] As Figures 1 to 6As shown, before use, water is injected into the cavity body 11 and the water storage tank 3 through the water injection pipe 23, and the water level is observed by the first liquid level pipe 30. The water level cannot be higher than the lower edge of the outlet of the air outlet pipe 31. Since the exhaust valve 32 is always open, the air pressure in the water storage tank 3 is consistent with the atmospheric pressure, and the gas pressure in the water storage tank 3 will not increase due to the heating of the injected water, which can avoid safety accidents caused by pressure increase; then, waste water is injected into the collection tank 4 through the feed pipe 40, and the waste water level is observed by the second liquid level pipe 60. When the appropriate liquid level is reached, the injection is stopped, and the electromagnetic valve 63 is closed, so that the collection tank 4 becomes a closed tank, and the waste water cannot overflow, ensuring that the concentration of heavy metals in the waste water remains stable during the reaction and precipitation process.

[0037] Then, since the electromagnetic valve of the burner 1 will inevitably leak gas after a long period of operation, air is injected at the air outlet position of the burner 1 before ignition, and the furnace 10 is purged for at least three minutes. The gas that may leak in the furnace 10 is discharged into the atmosphere through the air pipe 15 and the air guide pipe 103, so as to prevent instantaneous explosion caused by ignition and starting from causing boiler explosion accident; after the purging is completed, the burner 1 is connected to the combustible gas and ignited, and the flame extends into the furnace 10. By using the wall attachment effect of the hot gas flow, the high-temperature gas flow formed by combustion adheres to the inner wall of the furnace 10 and moves into the first smoke hood 101 and then into the fire tube 12, and then into the second smoke hood 102, and the tail gas is discharged through the air guide pipe 103. This is the process of heating the fire tube and heating the injected water by heat transfer from the fire tube. During the heating process, the spiral fins 121 and the jet-shaped fins 104 increase the heat transfer area, which helps to speed up the efficiency of hot water. At the same time, the cabinet power motor 44 is started, and the output end of the power motor 44 synchronously drives the connecting rod 42 and the stirring impeller 43 to rotate, so as to stir the waste water to achieve the purpose of uniform heating of the waste water. At the same time, the reaction reagent (such as flocculant) is added to the collection tank 4 through the feeding port 45, and the stirring impeller 43 is rotated to realize sufficient mixing with the waste water, so as to improve the precipitation efficiency of heavy metals in the waste water.

[0038] In this process, the steam formed by heating the waste water enters the connected hollow spring pipe 53 through the insertion end of the condensing pipe 5, and then the cooling water is injected through the water inlet pipe 51. The cooling water exchanges heat with the steam through the pipe wall of the hollow spring pipe 53. The steam condenses into water when it is cooled and then flows back into the collection tank 4, ensuring the stability of the reaction concentration of the waste water. The cooling water is discharged through the water outlet pipe 52 after absorbing heat, and then enters the condensing pipe 5 through the water inlet pipe 51 to achieve the purpose of circulating heat absorption. A first thermocouple 71 is arranged on the heating furnace 2 and inserted into the cavity body 11, and a second thermocouple 72 is arranged on the water storage tank 3 and inserted into the collection tank 4, so as to observe the temperature of the heated water and the waste water in time.

[0039] It is to be noted that one end of the hollow spring tube 53 is communicated with the air bag 54, and the outer wall of the air bag 54 is attached to the inner wall of the support ring 55. Since the hollow spring tube 53 will have a thermal expansion and contraction state change, in order to avoid deformation and damage to the hollow spring tube 53, and better adapt to the temperature difference deformation, the hollow spring tube 53 will be deformed and displaced along the attached position between the air bag 54 and the support ring 55, that is, it will move along the axial center line direction of the condenser tube 5. It is particularly pointed out that when the steam enters the air bag 54, the air bag 54 expands and forms an abutting state with the attached position of the support ring 55, effectively preventing the leakage of cooling water, and also increasing the displacement resistance, that is, the deformation force is greater than the resistance formed after expansion, which will cause the hollow spring tube 53 to deform, effectively improving the deformation strength of the hollow spring tube 53 and prolonging the service life of the hollow spring tube 53.

[0040] In addition, the precipitated heavy metals will be deposited at the bottom of the collection tank 4 and accumulated in the discharge pipe 41, and then discharged through the discharge pipe 41. During this period, in order to ensure the efficiency of the reaction and precipitation of heavy metals, it is necessary to discharge the precipitated heavy metals at intervals, so a switch valve (not shown) is arranged in the discharge pipe 41 to achieve the purpose of full reaction and timed discharge. After the same type of wastewater is treated, the electromagnetic valve 63 and the pressure pump 21 are opened at the same time, the water injected through the water injection pipe 23 is pumped out and enters the collection tank 4 through the drain pipe 20 and the flushing pipe 22, so as to clean the collection tank 4. After cleaning, the above-mentioned process is continued to start the collection and treatment of heavy metals in other types of wastewater. In view of the two use states, two outlets (as shown) are arranged at the outlet end of the discharge pipe 41, one side collects heavy metals and the other side discharges cleaning sewage, and the two outlet positions are both equipped with switch valves (not shown) for corresponding opening and closing use. Figure 4 It is to be noted that one end of the hollow spring tube 53 is communicated with the air bag 54, and the outer wall of the air bag 54 is attached to the inner wall of the support ring 55. Since the hollow spring tube 53 will have a thermal expansion and contraction state change, in order to avoid deformation and damage to the hollow spring tube 53, and better adapt to the temperature difference deformation, the hollow spring tube 53 will be deformed and displaced along the attached position between the air bag 54 and the support ring 55, that is, it will move along the axial center line direction of the condenser tube 5. It is particularly pointed out that when the steam enters the air bag 54, the air bag 54 expands and forms an abutting state with the attached position of the support ring 55, effectively preventing the leakage of cooling water, and also increasing the displacement resistance, that is, the deformation force is greater than the resistance formed after expansion, which will cause the hollow spring tube 53 to deform, effectively improving the deformation strength of the hollow spring tube 53 and prolonging the service life of the hollow spring tube 53.

Claims

1. A heavy metal collection device for wastewater, characterized by: The utility model provides a kind of heating furnace (2), water storage tank (3) and be provided with in heating furnace (2) and with combustor (1) is connected with stove (10), is provided with first smoke hood (101) in one end of the stove (10), another end is communicated and is provided with vent pipe (15), second smoke hood (102) is provided with in the vent pipe (15), air duct (103) is inserted in the position of the heating furnace (2) corresponding second smoke hood (102), the insertion end of the air duct (103) is stretched into second smoke hood (102), a plurality of fire tubes (12) are provided with between the first smoke hood (101) and second smoke hood (102), collection tank (4) is provided with in the water storage tank (3) and is communicated and is provided with feed pipe (40), is provided with replenishment port (45) in the feed pipe (40) and is communicated, is provided with stirring device on one side of the collection tank (4), another side is communicated and is provided with condenser, the condenser includes insertion into collection tank (4) and is provided with condenser pipe (5), is provided with fixed seat (50) in the condenser pipe (5), is provided with hollow spring pipe (53) with collection tank (4) and is communicated on the fixed seat (50), air bag (54) is also communicated and is provided with on one side of the hollow spring pipe (53), is provided with support ring (55) in the condenser pipe (5) corresponding the position of air bag (54), the inner side wall of the support ring (55) is attached with the outer side wall of air bag (54); The inner wall of the heating furnace (2) and the outer wall of the stove (10) form a cavity (11) that is communicated with the water storage tank (3), and the collection tank (4) is provided with a discharge pipe (41) that penetrates the water storage tank (3).

2. The wastewater heavy metal collection device of claim 1, wherein: Jet-like fins (104) are provided on the outer walls of the stove (10), the first smoke hood (101) and the second smoke hood (102).

3. The wastewater heavy metal collection device of claim 1, wherein: A first fixed plate (13) is provided on one end of the stove (10), the first smoke hood (101) is provided on the first fixed plate (13), a second fixed plate (14) is provided on the vent pipe (15), the second smoke hood (102) is provided on the second fixed plate (14); a plurality of front fixed holes are provided on the first fixed plate (13), a plurality of rear fixed holes are provided on the second fixed plate (14) corresponding to the positions of the front fixed holes, and a fire tube (12) is inserted between each corresponding front fixed hole and rear fixed hole, and helical fins (121) are provided on the outer wall of the fire tube (12).

4. The wastewater heavy metal collection device of claim 1, wherein: The stirring device includes a power motor (44) fixedly arranged on the collection tank (4), and the output end of the power motor (44) is provided with a connecting rod (42) extending into the collection tank (4), and a stirring impeller (43) is screw-connected and fixedly arranged on the extending end of the connecting rod (42).

5. The wastewater heavy metal collection device of claim 1, wherein: A water inlet pipe (51) is communicated and provided on the condenser pipe (5) corresponding to the position of the fixed seat (50), and a water outlet pipe (52) is communicated and provided on the condenser pipe (5) corresponding to the position of the air bag (54).

6. The wastewater heavy metal collection device of claim 1, wherein: The hollow spring pipe (53) has a spiral structure.

7. The wastewater heavy metal collection device of claim 1, wherein: A first liquid level pipe (30) is vertically connected to one side of the water storage tank (3), an air outlet pipe (31) is connected to the upper end of the first liquid level pipe (30) and extends into the water storage tank (3), and an air exhaust valve (32) is arranged at the position of the upper end of the first liquid level pipe (30) corresponding to the air outlet pipe (31).

8. The wastewater heavy metal collection device of claim 1, wherein: A second liquid level pipe (60) is vertically connected to one side of the collecting tank (4), a connecting pipe (61) is connected to the upper end of the second liquid level pipe (60) and extends into the collecting tank (4), an air exhaust pipe (62) is arranged at the position of the upper end of the second liquid level pipe (60) corresponding to the connecting pipe (61), and an electromagnetic valve (63) is arranged on the air exhaust pipe (62).

9. The wastewater heavy metal collection device of claim 1, wherein: A water injection pipe (23) is connected to the heating furnace (2), a water discharge pipe (20) is connected to the water injection pipe (23), a pressure pump (21) is arranged at the water outlet end of the water discharge pipe (20), and a flushing water pipe (22) extending into the collecting tank (4) is arranged at the water outlet end of the pressure pump (21).

Images