Vacuum low-temperature concentration device for heavy metal solution

Abstract

The utility model discloses a vacuum low-temperature concentration device for a heavy metal solution, which relates to the technical field of heavy metal liquid treatment and comprises a concentration cylinder, a liquid discharge hopper arranged at the bottom end of the concentration cylinder, an air pressure sensor arranged on the inner wall of the top end of the concentration cylinder and a heating component arranged in the concentration cylinder. A liquid inlet pipe, a steam outlet pipe, a bracket and a touch all-in-one machine are respectively arranged on the surface of the concentration cylinder, a first electric valve is arranged on the surface of the liquid inlet pipe, and a second electric valve is arranged on the surface of the steam outlet pipe; the heavy metal concentration device disclosed by the utility model has the beneficial effects that the vacuum pump pumps out gas in the concentration cylinder and reduces the air pressure in the concentration cylinder until a measured value of the air pressure sensor is equal to or less than a preset low-pressure value, and the boiling point of water in a heavy metal solution is reduced by reducing the air pressure in the concentration cylinder; low-temperature boiling concentration is realized, and a large amount of energy is saved.

Description

Technical Field

[0001] The utility model relates to a concentrating device, in particular to a heavy metal solution vacuum low-temperature concentrating device, belonging to the technical field of heavy metal liquid treatment. Background Art

[0002] The electronics industry will discharge industrial wastewater. According to the different pollutant components, it can be divided into acidic and alkaline wastewater, heavy metal wastewater (nickel, copper, etc.), organic wastewater, ammonia wastewater, phosphorus wastewater, etc. Heavy metal wastewater is the most serious industrial wastewater that pollutes the environment and is the most harmful to humans. At present, the treatment methods for heavy metal wastewater in China mainly include chemical precipitation and evaporation concentration reduction treatment.

[0003] Among them, the "heavy metal waste liquid concentration and treatment equipment" disclosed in the application number "CN202222731460.4" "comprises a main cylinder, a liquid inlet pipe, a cylinder cover, an evaporation plate and a liquid discharge pipe. A plurality of the evaporation plates are staggered between two opposite inner walls of the main cylinder and the far ends are not closed. The liquid inlet pipe is arranged above the top evaporation plate and introduces the heavy metal waste liquid that needs to be concentrated and treated. The cylinder cover is sealed and buckled on the top opening of the main cylinder. The cylinder cover is provided with an exhaust port connected to an exhaust device; the liquid discharge pipe is arranged at the bottom of the main cylinder. The utility model heavy metal waste liquid concentration and treatment equipment can quickly treat laboratory heavy metal waste liquid, has high treatment efficiency, and is more flexible in operation."

[0004] However, the above scheme still has the following defects: heating the heavy metal wastewater under normal pressure causes the water in the wastewater to boil, and the boiling point of water is high, so a large amount of energy is consumed to heat the heavy metal wastewater. Utility Model Content

[0005] The utility model aims to provide a heavy metal solution vacuum low-temperature concentration device to solve the existing problem that a large amount of energy is consumed when heating and concentrating heavy metal wastewater under normal pressure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heavy metal solution vacuum low-temperature concentration device, comprising a concentration cylinder, a liquid drain bucket is provided at the bottom end of the concentration cylinder, an air pressure sensor is provided on the inner wall of the top end of the concentration cylinder, a heating component is provided inside the concentration cylinder, a liquid inlet pipe, a steam outlet pipe, a bracket and a touch-integrated machine are provided on the surface of the concentration cylinder, a first electric valve is provided on the surface of the liquid inlet pipe, a second electric valve is provided on the surface of the steam outlet pipe, a vacuum pump is provided at one end of the steam outlet pipe, a connecting pipe is provided at the air outlet end of the vacuum pump, and a purification component is provided at one end of the connecting pipe.

[0007] As a preferred technical solution of the present utility model, the heating assembly includes a plurality of support rods, and a plurality of the support rods are all arranged on the inner wall of the bottom of the concentration cylinder. One end of each of the plurality of support rods is provided with a heat-conducting copper ring, and a plurality of heating resistance wires are arranged inside the heat-conducting copper ring. One end of the heat-conducting copper ring is provided with a shunt block.

[0008] As a preferred technical solution of the present utility model, the purification assembly includes a purification box and a sealing assembly. The purification box is arranged at one end of the connecting pipe. A U-shaped frame is arranged on the inner wall of the purification box, a positioning groove is opened on the inner wall of the U-shaped frame, and an activated carbon plate is slidably connected to the inner wall of the positioning groove.

[0009] As a preferred technical solution of the present utility model, a drawplate groove is opened on the surface of the purification box. The inner wall of the front of the drawplate groove is connected to the front of the U-shaped frame, and the inner wall of the back of the drawplate groove is connected to the back of the U-shaped frame. An exhaust pipe is arranged on one side of the purification box.

[0010] As a preferred technical solution of the present utility model, a third electric valve is arranged on the surface of the exhaust pipe. A steam collecting hopper is arranged at one end of the exhaust pipe, and the surface of the steam collecting hopper is connected to the inner wall of the bottom of the purification box.

[0011] As a preferred technical solution of the present utility model, the sealing assembly includes a pressing plate and two stoppers. The pressing plate is slidably arranged in the inner wall of the drawplate groove. A sealing gasket that slides with the drawplate groove is arranged on one side of the pressing plate, and one side of the U-shaped frame and one side of the activated carbon plate are both slidably connected to one side of the sealing gasket. A handle and two sleeve boxes are respectively arranged on the other side of the pressing plate. The two stoppers are both arranged on one side of the purification box, and a clamping groove is opened on the back of one of the stoppers and the front of the other stopper.

[0012] As a preferred technical solution of the present utility model, clamping blocks that are engaged with the clamping grooves are slidably connected to the inner walls of the two sleeve boxes. One side of each of the two clamping blocks is set to be an inclined surface. Compression springs are arranged between the two sleeve boxes and the corresponding clamping blocks. Limit grooves are opened on the surfaces of the two sleeve boxes, and push rods are slidably connected to the inner walls of the two limit grooves. One end of each of the two push rods is connected to the front of the corresponding clamping block.

[0013] As a preferred technical solution of the present utility model, a liquid outlet pipe is arranged at one end of the liquid discharge hopper. A fourth electric valve is arranged on the surface of the liquid outlet pipe, and a liquid level sensor is arranged on the inner wall of the liquid discharge hopper.

[0014] Compared with the related art, a vacuum low-temperature concentration device for heavy metal solutions provided by the present utility model has the following beneficial effects:

[0015] 1. The vacuum pump pumps out the gas inside the concentration cylinder to reduce the air pressure inside the concentration cylinder until the measured value of the air pressure sensor is equal to or less than the preset low pressure value. By reducing the air pressure inside the concentration cylinder, the boiling point of the water in the heavy metal solution is reduced. Compared with the existing normal pressure heating concentration method, low-temperature boiling concentration is achieved, saving a lot of energy;

[0016] 2. The activated carbon plate can filter harmful substances in the gas pumped out by the vacuum pump to prevent the harmful substances from leaking with the pumped gas. The activated carbon plate can be pulled out along the inner wall of the positioning groove to achieve the replacement of the activated carbon plate;

[0017] 3. When the pressure plate moves, it pushes the card block to move through the sleeve. When the moving card block contacts the stopper, it pushes itself through the inclined surface, causing the card block to retract into the interior of the sleeve to prevent the card block from blocking the movement of the pressure plate. Then the sealing gasket presses the activated carbon plate, the card block is aligned with the slot, the compression spring stretches and pushes the card block to move, causing the card block to be stuck in the slot, completing the fixation of the pressure plate. There is no need to tighten bolts or screws, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the top cross-sectional structure of the purification box of the utility model;

[0021] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0022] Figure 5 It is a schematic diagram of the exploded structure of the mold frame of the utility model.

[0023] In the figure: 1. Concentrator; 2. Drain bucket; 3. Air pressure sensor; 4. Heating component; 41. Support rod; 42. Thermal copper ring; 43. Diverter block; 5. Purification component; 51. Purification box; 52. Profile frame; 53. Positioning groove; 54. Activated carbon plate; 55. Plate extraction groove; 56. Exhaust pipe; 57. Steam collecting bucket; 6. Sealing component; 61. Pressing plate; 62. Block; 63. Sealing pad; 64. Box; 65. Block; 66. Compression spring; 67. Limiting groove; 68. Push rod; 7. Liquid inlet pipe; 8. Steam outlet pipe; 9. Bracket; 10. Touch all-in-one machine; 11. Vacuum pump; 12. Connecting pipe; 13. Liquid outlet pipe; 14. Liquid level sensor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 The utility model provides a heavy metal solution vacuum low-temperature concentration device, including a concentration cylinder 1, a liquid discharge bucket 2 is fixedly provided at the bottom end of the concentration cylinder 1, a pressure sensor 3 is fixedly provided on the inner wall of the top end of the concentration cylinder 1, a heating component 4 is provided inside the concentration cylinder 1, a liquid inlet pipe 7, a steam outlet pipe 8, a bracket 9 and a touch all-in-one machine 10 are fixedly provided on the surface of the concentration cylinder 1, a first electric valve is fixedly provided on the surface of the liquid inlet pipe 7, a second electric valve is fixedly provided on the surface of the steam outlet pipe 8, a vacuum pump 11 is fixedly provided at one end of the steam outlet pipe 8, and a gas outlet end of the vacuum pump 11 is fixedly provided. There is a connecting tube 12, one end of which is provided with a purification component 5. The air pressure sensor 3 measures the air pressure inside the concentrator cylinder 1 and transmits the air pressure value to the touch all-in-one machine 10. The touch all-in-one machine 10 is provided with a program inside. When the value is greater than the preset low pressure value, the touch all-in-one machine 10 ensures that the first electric valve is closed, and the touch all-in-one machine 10 starts the second electric valve and the vacuum pump 11. The vacuum pump 11 pumps out the gas inside the concentrator cylinder 1 to reduce the air pressure inside the concentrator cylinder 1 until the measurement value transmitted by the air pressure sensor 3 is equal to or less than the preset low pressure value.

[0026] The heating assembly 4 includes a plurality of support rods 41, and the plurality of support rods 41 are fixedly arranged on the inner wall at the bottom of the concentrator cylinder 1. A heat-conducting copper ring 42 is fixedly arranged at one end of the plurality of support rods 41, and a plurality of heating resistance wires are fixedly arranged inside the heat-conducting copper ring 42. A shunt block 43 is fixedly arranged at one end of the heat-conducting copper ring 42. The plurality of heating resistance wires are started by touching the all-in-one machine 10, and the heating resistance wires release heat. The heavy metal solution inside the concentrator cylinder 1 immerses the heat-conducting copper ring 42, thereby heating the heavy metal solution, causing the water in the heavy metal solution to boil and accelerating evaporation.

[0027] The purification assembly 5 includes a purification box 51 and a sealing assembly 6. The purification box 51 is fixedly arranged at one end of the connecting pipe 12. A shaped frame 52 is fixedly arranged on the inner wall of the purification box 51. A positioning groove 53 is opened on the inner wall of the shaped frame 52. An activated carbon plate 54 is slidably connected to the inner wall of the positioning groove 53. The positioning groove 53 is used to support the activated carbon plate 54. The activated carbon plate 54 is pulled out along the inner wall of the positioning groove 53 to realize the replacement of the activated carbon plate 54. The activated carbon plate 54 can filter harmful substances in the gas pumped out by the vacuum pump 11.

[0028] A plate extraction groove 55 is provided on the surface of the purification box 51, the inner wall of the front side of the plate extraction groove 55 is fixedly connected to the front side of the molded frame 52, and the inner wall of the back side of the plate extraction groove 55 is fixedly connected to the back side of the molded frame 52. An exhaust pipe 56 is fixedly provided on one side of the purification box 51. The plate extraction groove 55 facilitates the extraction of the activated carbon plate 54. One end of the exhaust pipe 56 is connected to an external pipeline for discharging treated gas to the outside.

[0029] A third electric valve is fixedly provided on the surface of the exhaust pipe 56, and a steam collecting hopper 57 is fixedly provided at one end of the exhaust pipe 56. The surface of the steam collecting hopper 57 is fixedly connected to the inner wall of the bottom of the purification box 51. The steam collecting hopper 57 will guide the gas passing through the activated carbon plate 54 to prevent the gas from rebounding against the activated carbon plate 54 after colliding with the inner wall of the bottom end of the purification box 51.

[0030] The sealing assembly 6 includes a pressing plate 61 and two blocks 62. The pressing plate 61 is slidably set on the inner wall of the withdrawal plate groove 55. A sealing gasket 63 sliding with the withdrawal plate groove 55 is fixed on one side of the pressing plate 61, and one side of the mold frame 52 and one side of the activated carbon plate 54 are both slidably connected to one side of the sealing gasket 63. A handle and two sleeves 64 are fixed on the other side of the pressing plate 61. The two blocks 62 are fixed on one side of the purification box 51. The back side of one block 62 and the front side of the other block 62 are both provided with a card slot. The pressing plate 61 slides into the withdrawal plate groove 55, and the pressing plate 61 will push the sealing gasket 63, prompting the sealing gasket 63 to press the activated carbon plate 54 to achieve the sealing of the purification box 51.

[0031] The inner walls of the two sleeves 64 are slidably connected with a block 65 that engages with the slot, one side of the two blocks 65 is set as an inclined surface, and a clamping spring 66 is fixedly provided between the two sleeves 64 and the corresponding block 65. The surfaces of the two sleeves 64 are provided with a limiting groove 67, and the inner walls of the two limiting grooves 67 are slidably connected with a push rod 68, one end of the two push rods 68 is respectively fixedly connected to the front side of the two blocks 65, and the push rod 68 is pulled, and the push rod 68 drives the block 65 to move, and the block 65 will compress the clamping spring 66, causing the block 65 to disengage from the slot and retract into the interior of the sleeve 64, thereby releasing the block 62 from fixing the block 65, the sleeve 64 and the pressure plate 61. When disassembling the pressure plate 61, there is no need to remove the bolts, which is convenient for replacing the activated carbon plate 54.

[0032] A liquid outlet pipe 13 is fixedly provided at one end of the liquid discharge hopper 2, a fourth electric valve is fixedly provided on the surface of the liquid outlet pipe 13, a liquid level sensor 14 is fixedly provided on the inner wall of the liquid discharge hopper 2, the liquid level sensor 14 measures the liquid level of the heavy metal solution, and transmits the liquid level value to the touch all-in-one machine 10, and a program is provided inside the touch all-in-one machine 10. When the liquid level value is equal to or less than the preset liquid level value, the program will determine that the low-temperature concentration is completed, and then the touch all-in-one machine 10 will turn off the heating resistance wire and display the end of concentration on the touch screen.

[0033] When in use, first, the air pressure sensor 3 measures the air pressure inside the concentration cylinder 1, and transmits the air pressure value to the touch all-in-one machine 10. The touch all-in-one machine 10 is provided with a program inside. When the value is greater than the preset low pressure value, the touch all-in-one machine 10 will ensure that the first electric valve is in a closed state, and the touch all-in-one machine 10 starts the second electric valve and the vacuum pump 11. The vacuum pump 11 pumps out the gas inside the concentration cylinder 1 to reduce the air pressure inside the concentration cylinder 1 until the measurement value of the air pressure sensor 3 is equal to or less than the preset low pressure value. By reducing the air pressure inside the concentration cylinder 1, the boiling point of the water in the heavy metal solution is reduced. Then the touch all-in-one machine 10 will start a number of heating resistors. The heating resistors release heat and heat the heavy metal solution, causing the water in the heavy metal solution to boil and accelerate the evaporation of the water. Compared with the existing normal pressure heating concentration method, the boiling point of the water is low, low-temperature boiling concentration is achieved, and a lot of energy is saved.

[0034] Furthermore, the activated carbon plate 54 can filter harmful substances in the gas pumped out by the vacuum pump 11 to prevent the harmful substances from leaking along with the pumped gas. When installing the activated carbon plate 54, the activated carbon plate 54 is slid into the activated carbon plate 54 along the inner wall of the positioning groove 53, and then slid into the pressing plate 61 along the plate extraction groove 55. The pressing plate 61 pushes the sealing gasket 63, so that the sealing gasket 63 presses the activated carbon plate 54 to achieve the sealing of the purification box 51.

[0035] It should also be added that when the pressure plate 61 moves, it pushes the block 65 to move through the sleeve 64. When the moving block 65 contacts the block 62, it pushes itself through the inclined surface, causing the block 65 to retract into the interior of the sleeve 64, thereby preventing the block 65 from blocking the movement of the pressure plate 61. Then, the sealing gasket 63 presses the activated carbon plate 54, and the block 65 is aligned with the slot. The compression spring 66 stretches and pushes the block 65 to move, causing the block 65 to be stuck in the slot, thereby completing the fixation of the pressure plate 61. There is no need to tighten bolts or screws, thereby improving installation efficiency.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heavy metal solution vacuum low temperature concentration device, comprising a concentration cylinder (1), characterized in that: The bottom end of the concentrator (1) is provided with a liquid drain hopper (2), the inner wall of the top end of the concentrator (1) is provided with an air pressure sensor (3), the interior of the concentrator (1) is provided with a heating component (4), the surface of the concentrator (1) is provided with a liquid inlet pipe (7), a steam outlet pipe (8), a bracket (9) and a touch all-in-one machine (10), the surface of the liquid inlet pipe (7) is provided with a first electric valve, the surface of the steam outlet pipe (8) is provided with a second electric valve, one end of the steam outlet pipe (8) is provided with a vacuum pump (11), the gas outlet end of the vacuum pump (11) is provided with a connecting pipe (12), and one end of the connecting pipe (12) is provided with a purification component (5).

2. The heavy metal solution vacuum low temperature concentration device according to claim 1, characterized in that: The heating assembly (4) comprises a plurality of support rods (41), wherein the plurality of support rods (41) are arranged on the inner wall of the bottom of the concentrator cylinder (1), a heat-conducting copper ring (42) is arranged at one end of the plurality of support rods (41), a plurality of heating resistance wires are arranged inside the heat-conducting copper ring (42), and a shunt block (43) is arranged at one end of the heat-conducting copper ring (42).

3. The heavy metal solution vacuum low temperature concentration device according to claim 1, characterized in that: The purification assembly (5) comprises a purification box (51) and a sealing assembly (6); the purification box (51) is arranged at one end of the connecting pipe (12); the inner wall of the purification box (51) is provided with a shaped frame (52); the inner wall of the shaped frame (52) is provided with a positioning groove (53); the inner wall of the positioning groove (53) is slidably connected with an activated carbon plate (54).

4. The heavy metal solution vacuum low temperature concentration device according to claim 3, characterized in that: A plate extraction groove (55) is provided on the surface of the purification box (51), the inner wall of the front side of the plate extraction groove (55) is connected to the front side of the molded frame (52), and the inner wall of the back side of the plate extraction groove (55) is connected to the back side of the molded frame (52). An exhaust pipe (56) is provided on one side of the purification box (51).

5. The heavy metal solution vacuum low temperature concentration device according to claim 4, characterized in that: A third electric valve is provided on the surface of the exhaust pipe (56), and a steam collecting hopper (57) is provided at one end of the exhaust pipe (56). The surface of the steam collecting hopper (57) is connected to the inner wall of the bottom of the purification box (51).

6. The heavy metal solution vacuum low temperature concentration device according to claim 3, characterized in that: The sealing assembly (6) includes a pressure plate (61) and two blocks (62), the pressure plate (61) is slidably arranged on the inner wall of the plate withdrawal groove (55), one side of the pressure plate (61) is provided with a sealing gasket (63) that slides with the plate withdrawal groove (55), and one side of the mold frame (52) and one side of the activated carbon plate (54) are both slidably connected to one side of the sealing gasket (63), and the other side of the pressure plate (61) is respectively provided with a handle and two sleeve boxes (64), and the two blocks (62) are both arranged on one side of the purification box (51), and a card slot is provided on the back side of one of the blocks (62) and the front side of the other block (62).

7. The heavy metal solution vacuum low temperature concentration device according to claim 6, characterized in that: The inner walls of the two sleeve boxes (64) are slidably connected with a card block (65) engaged with the card slot, one side of the two card blocks (65) is set as an inclined surface, and a compression spring (66) is provided between the two sleeve boxes (64) and the corresponding card block (65). The surfaces of the two sleeve boxes (64) are provided with a limiting groove (67), and the inner walls of the two limiting grooves (67) are slidably connected with a push rod (68), and one end of the two push rods (68) is respectively connected to the front side of the two card blocks (65).

8. The heavy metal solution vacuum low temperature concentration device according to claim 1, characterized in that: A liquid outlet pipe (13) is provided at one end of the liquid discharge hopper (2), a fourth electric valve is provided on the surface of the liquid outlet pipe (13), and a liquid level sensor (14) is provided on the inner wall of the liquid discharge hopper (2).

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