A treatment device for industrial waste salt resource utilization

Abstract

This invention relates to the field of environmental protection equipment technology, and in particular to a treatment device for industrial waste salt resource recovery, comprising an evaporator, a support assembly, and a scraper assembly; a limiting assembly is also provided between the support assembly and the scraper assembly. The scraper assembly includes a baffle and a scraper, and the support assembly includes a support shaft and a drive motor. The outer edge of the baffle is slidably connected to the side wall of the evaporator, and the scraper is in line contact with the bottom wall of the evaporator. Under the action of water vapor, the baffle can actively scrape off the residues adhering to the side wall of the evaporator, while under the action of the drive motor, the scraper can scrape off the residual salt mixture on the bottom wall of the evaporator. In this way, the maintenance and cleaning of the evaporator does not require manual intervention, which not only greatly reduces the maintenance cost of the evaporator, but also improves the efficiency of the evaporator in treating high-salt wastewater, thereby improving the efficiency of waste salt resource recovery.

Description

Technical Field

[0001] This invention relates to the field of environmental protection equipment technology, specifically to a treatment device for the resource recovery of industrial waste salt. Background Technology

[0002] Industrial waste salt refers to high-concentration saline waste liquid or solid inorganic salt containing certain pollutants, mainly originating from industries such as pesticides, pharmaceuticals, dyes, and chemicals. Industrial waste salt residue has strong hygroscopicity, high moisture content, and strong water solubility. It contains harmful, toxic, or highly toxic impurities and cannot be used directly as an industrial raw material. Industrial salt has a wide range of applications in industries such as chemicals and is one of the most basic raw materials in the chemical industry. Recycling industrial waste salt can not only eliminate the environmental hazards of waste salt but also recover and fully utilize it, achieving a circular economy.

[0003] Currently, the most mature technology for the resource utilization of industrial waste salt is the fractional crystallization technology, which separates high-purity single salt products through a step-by-step crystallization process, thereby realizing the resource utilization of industrial waste salt. In the step-by-step crystallization process, related equipment such as evaporators needs to be introduced. In order to improve evaporation efficiency, existing technologies, such as the Chinese patent for a high-salt wastewater evaporation treatment device, publication number CN111533196B, improve evaporation efficiency by setting multiple circular shells in the treatment tank equipped with a spray device, thereby increasing the evaporation area. However, the drawback of this patent is that after evaporation, the salt mixture remaining on the circular shells needs to be manually scraped off. Manual scraping is not only time-consuming and laborious, increasing the maintenance difficulty of the device, but also reduces the evaporation efficiency of the high-salt wastewater evaporation treatment device, thus affecting the resource utilization efficiency of industrial waste salt. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a treatment device for industrial waste salt resource utilization, which can improve the treatment efficiency of waste salt resource utilization.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a treatment device for the resource recovery of industrial waste salt, comprising an evaporator, the evaporator including a tank body, and heating wires laid inside the bottom of the tank body; and

[0006] A support assembly includes a support shaft and a drive motor. At least a portion of the lower part of the support shaft is movably disposed within the tank body. The drive motor is located at the top of the tank body, and its output shaft is connected to the upper end of the support shaft. Both ends of the support shaft are tubular structures. An exhaust port is located at the upper part of the support shaft, and a liquid inlet is located at the lower part. Both the exhaust port and the liquid inlet are located inside the tank body.

[0007] The scraper assembly includes a partition and a scraper; the partition is movably sleeved on a support shaft, and its outer edge is slidably connected to the side wall of the tank, dividing the tank's inner cavity into an upper chamber and a lower chamber; the scraper is fixedly disposed below the partition; when the scraper abuts against the bottom wall of the tank, the scraper and the bottom wall of the tank are in line contact; when the exhaust port is at least partially located below the partition, the upper chamber and the lower chamber are spatially connected; and

[0008] A limiting component is provided between the partition and the support shaft so that the partition and the support shaft can rotate coaxially under the action of external force.

[0009] Preferably, the support shaft is composed of a first connecting pipe, a connecting rod, and a second connecting pipe from bottom to top; the liquid inlet is located on the first connecting pipe; the exhaust port is located on the second connecting pipe; the lower end of the first connecting pipe is rotatably connected to the bottom wall of the tank; and the upper end of the second connecting pipe extends to the top of the tank and is connected to the output end of the drive motor.

[0010] Preferably, the limiting assembly includes a connecting seat, a slide rail, and a fixed seat; the fixed seat is fixedly sleeved on the connecting rod; the connecting seat includes a slip ring and a lever; the lever is located at the lower end of the slip ring; the slip ring is sleeved on the support shaft and located on the upper side of the fixed seat; the slide rail is laid on the outer periphery of the support shaft; the slip ring is slidably connected to the support shaft through the slide rail; the outer periphery of the slip ring is fixedly connected to the partition plate and the slip ring and the partition plate are coaxial; the upper end of the fixed seat is provided with a lever groove adapted to the lever.

[0011] Preferably, the inner wall of the slip ring is in seamless contact with the outer periphery of the support shaft.

[0012] Preferably, the thickness of the slip ring is not less than the longitudinal dimension of the exhaust port.

[0013] Preferably, the thickness of the slip ring is less than the longitudinal dimension of the exhaust port.

[0014] Preferably, the outer diameter of the partition matches the inner diameter of the tank; the outer edge of the partition is coated with a layer of sealant; the sealant is pressed against the inner wall of the tank.

[0015] Preferably, the processing device further includes a three-way valve; the three-way valve has a first outlet, an inlet, and a second outlet, the second outlet being connected to a first connecting pipe.

[0016] Preferably, the heating wire is evenly laid around the axis of the tank.

[0017] Preferably, the top and bottom walls of the tank are both cylindrical funnel-shaped structures; the liquid inlet is located at the center of the bottom wall.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting baffles and scrapers inside the evaporator, the baffles and scrapers are driven by steam and a support shaft. The outer edge of the baffle is slidably connected to the side wall of the evaporator, and the scraper is in line contact with the bottom wall of the evaporator. Under the action of steam, the baffle can actively scrape off the residues attached to the side wall of the evaporator. Under the action of the drive motor, the scraper can scrape off the residual salt mixture on the bottom wall of the evaporator. In this way, the maintenance and cleaning of the evaporator does not require manual intervention, which not only greatly reduces the maintenance cost of the evaporator, but also improves the efficiency of the evaporator in treating high-salt wastewater, thereby improving the efficiency of waste salt resource utilization. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0020] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at point A;

[0021] Figure 3 This is a schematic diagram of the connector structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the support component structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the toggle disc structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0025] Figure 7 This is a schematic diagram of the support component in Embodiment 2 of the present invention.

[0026] In the diagram: 1 Evaporator, 11 Tank body, 12 Exhaust pipe, 13 Support column, 14 Heating wire; 2 Scraper assembly, 21 Baffle, 22 Connecting seat, 23 Scraper, 24 Bracket, 221 Slip ring, 222 Toggle block, 223 Slide groove; 3 Support assembly, 31 Support shaft, 32 Slide rail, 33 Fixed seat, 311 Liquid inlet, 312 Exhaust port, 331 Toggle groove; 4 Three-way valve, 41 First outlet, 42 Inlet, 43 Second outlet. Detailed Implementation

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present invention. Although the present invention has been described in conjunction with its preferred embodiments, these embodiments are merely illustrative and not intended to limit the scope of the invention.

[0028] Specific Implementation Example 1: Please refer to... Figure 1-5A treatment device for the resource recovery of industrial waste salt includes:

[0029] Evaporator 1 includes a tank body 11, an exhaust pipe 12, and several support columns 13. The exhaust pipe 12 is located at the top of the tank body 11 and communicates with the inner cavity of the tank body 11. The support columns 13 are located at the lower end of the tank body 11. As an evaporator, in this embodiment, the bottom of the tank body 11 is also provided with a heating wire 14. In practice, the heating wire 14 is embedded in the bottom of the tank body 11 as a sandwich layer. At the same time, the heating wire 14 is laid in a spiral shape around the axis of the tank body 11 to ensure the uniformity of heating.

[0030] Furthermore, the top and bottom walls of the tank 11 are both cylindrical, but the top wall of the tank 11 protrudes upwards while the bottom wall of the tank 11 is concave downwards. This structure is more conducive to the aggregation of the solution inside the tank 11.

[0031] A three-way valve 4 is located on the lower side of the tank 11. The three-way valve 4 has a first outlet 41, an inlet 42, and a second outlet 43. The second outlet 43 is connected to the tank 11. When it is necessary to pressurize high-salt wastewater into the tank 11, the first outlet 41 must be closed, and the high-salt wastewater enters the tank 11 through the inlet 42 and the second outlet 43 in sequence. After treatment, when the concentrate needs to be discharged, the inlet 42 is closed and the first outlet 41 is opened, and the concentrate is discharged through the second outlet 43 and the first outlet 41 in sequence.

[0032] In one embodiment, the three-way valve 4 can be a three-way solenoid valve, which can improve the degree of electrical automation, reduce manual labor, and improve efficiency.

[0033] The support assembly 3 includes a support shaft 31, a slide rail 32, a fixed seat 33, a drive motor (not shown in the figure), and several bearing seats. The lower part of the support shaft 31 is movably mounted inside the tank body 11 through the bearing seats, and the support shaft 31 is coaxial with the tank body 11. The drive motor is fixedly installed on the top of the tank body 11, and the upper end of the support shaft 31 extends to the outside of the tank body 11 and is connected to the output shaft of the drive motor. The drive motor can drive the support shaft 31 to rotate circumferentially. The slide rail 32 is laid along the axis of the support shaft 31 on the outer periphery of the support shaft 31. There are two slide rails 32, which are symmetrically distributed on both sides of the axis of the support shaft 31. The fixed seat 33 is fixedly sleeved on the support shaft 31 and is located below the slide rail 32.

[0034] In this embodiment, please refer to Figure 4The support shaft 31 is composed of a first connecting pipe 31a, a connecting rod 31b, and a second connecting pipe 31c from bottom to top. The fixed seat 33 is sleeved on the connecting rod 31b. The slide rail 32 extends from the fixed seat 33 to the outer periphery of the second connecting pipe 31c and is located inside the tank body 11. The lower end of the first connecting pipe 31a extends to the outside of the tank body 11 and communicates with the second outlet 43 of the three-way valve 4.

[0035] Furthermore, the first connecting pipe 31a is provided with a liquid inlet 311, and the second connecting pipe 31c is provided with a vent 312. Both the liquid inlet 311 and the vent 312 are located inside the tank body 11. Furthermore, the liquid inlet 311 is located at the axis of the bottom wall of the tank body 11, which facilitates the flow out of the tank body 11 after the solution inside the tank body 11 has gathered.

[0036] The upper end of the fixed base 33 is provided with four slots 331. Two of the slots 331 correspond one-to-one with the positions of two slide rails 32. The slide rails 32 at the corresponding positions extend into the slots 331. It should be noted that the slide rails 32 can play a guiding role, so that the object displaced on the slide rails 32 can smoothly slide into the slots 331.

[0037] Scraper assembly 2 is disposed inside the tank body 11; scraper assembly 2 includes a partition 21, a connecting seat 22, a scraper 23, and several supports 24; the connecting seat 22 has a slip ring 221 and four levers 222, the four levers 222 being fixedly disposed around the axis of the slip ring 221 at the lower end of the slip ring 221; the partition 21 is fixedly connected to the slip ring 221 and the two are coaxial; two sliding grooves 223 are also formed on the inner wall of the slip ring 221 along its axis; the slip ring 221 The slide ring 221 is movably mounted on the support shaft 31 and located above the fixed seat 33. The slide groove 223 is adapted to the slide rail 32. Under the action of external force, the partition plate 21 and the slide ring 221 can move up and down along the axis of the support shaft 31. At the same time, due to the limiting effect of the slide groove 223 and the slide rail 32, the slide ring 221 can only move axially on the support shaft 31 and will not rotate circumferentially relative to the support shaft 31. Furthermore, the inner wall of the slide ring 221 is in seamless contact with the outer periphery of the support shaft 31 to improve airtightness.

[0038] In this embodiment, the outer diameter of the partition 21 matches the inner diameter of the tank 11, and the outer edge of the partition 21 is slidably connected to the side wall of the tank 11.

[0039] In one embodiment, a layer of sealant is laid on the outer edge of the partition 21. The presence of the sealant allows the outer edge of the partition 21 to be pressed against the inner wall of the tank 11, thereby further improving the sealing performance between the partition 21 and the tank 11.

[0040] Furthermore, there are two scrapers 23, which are mounted on the lower side of the partition 21 by a bracket. The two scrapers 23 are symmetrically arranged around the axis of the partition 21. The scraper 23 is an arc-shaped plate, and the scraper 23 is in line contact with the bottom wall of the tank 11. When the scraper 23 rotates around the axis of the tank 11 under the action of external force, the scraper 23 can perform a scraping action on the bottom wall of the tank 11.

[0041] In this embodiment, the four slots 331 correspond one-to-one with the four blocks 222, and the size of the slots 331 and the size of the blocks 222 are adapted to each other. The slide rail 32 extends into the slots 331 to play a guiding role. The blocks 222 can slide accurately into the slots 331 under the action of the slide rail 32, so that the connecting seat 22 and the fixed seat 33 are connected in a similar meshing manner through the blocks 222 and the slots 331.

[0042] The working principle of this device is as follows: In the initial state, the connecting seat 22 and the fixed seat 33 are pressed together, and both scrapers 23 abut against the bottom wall of the tank 11. At this time, there is a lower chamber between the partition 21 and the bottom wall of the tank 11. High-salt wastewater is pressed into the lower chamber through the three-way valve 4 until the water level contacts the lower end face of the partition 21, and the second outlet 43 is closed. The heating wire 14 starts to work, heating the high-salt wastewater. The steam pressure inside the lower chamber continuously increases, and the steam pushes the partition 21 to the exhaust port 312, where the partition 21 remains in position. The steam is discharged out of the tank 11 through the exhaust port 312. The concentration of high-salt wastewater continuously increases until the water level drops to a certain height, at which point the heating wire 14 stops working. As heat exchange proceeds, the air pressure in the space below the partition 21 continuously decreases, and the height of the partition 21 decreases. The partition 21 rises... During the descent process, the baffle 21 scrapes off water droplets or other deposits adhering to the side wall of the tank 11 without requiring manual removal. After the baffle 21 returns to its initial position, the drive motor operates, which drives the scraper 23 located below the baffle 21 to rotate around the axis of the tank 11, scraping the bottom wall of the tank 11. This ultimately removes the concentrated liquid adhering to the bottom wall of the tank 11. The concentrated liquid is then concentrated and flows to the inlet 311. At this point, the first outlet 41 and the second outlet 43 of the three-way valve 4 are opened to extract the concentrated liquid from the tank 11, thus completing the treatment of one lower chamber volume of high-salt wastewater. The entire treatment process is simple and rapid, and there are no deposits on the inner wall of the tank 11 after treatment. Maintenance of the tank 11 does not require manual intervention, greatly improving evaporation efficiency and reducing maintenance costs, ultimately improving the efficiency of industrial waste salt treatment.

[0043] In this embodiment, the thickness of the slip ring 221 must be no less than the longitudinal dimension of the exhaust port 312. The purpose of this setting is to allow water vapor to be discharged into the tank 11 through the second connecting pipe 31c, so as to prevent water vapor from entering the space between the partition 21 and the top wall of the tank 11 and condensing thereafter, and then accumulating in the upper space of the partition 21, thereby avoiding increased maintenance costs.

[0044] In summary, by installing baffles and scrapers inside the evaporator, driven by steam and a support shaft, with the outer edge of the baffles slidingly connected to the side wall of the evaporator and the scrapers in line contact with the bottom wall of the evaporator, the baffles can actively scrape off residues adhering to the side wall of the evaporator under the action of steam, while the scrapers can scrape off residual salt mixtures on the bottom wall of the evaporator under the action of the drive motor. In this way, the maintenance and cleaning of the evaporator does not require manual intervention, which not only greatly reduces the maintenance cost of the evaporator, but also improves the efficiency of the evaporator in treating high-salt wastewater, thereby improving the efficiency of waste salt resource utilization.

[0045] Example 2: Unlike Example 1, in order to reduce the impact of water vapor on the drive motor, such as... Figures 6 to 7 As shown, the support shaft 31 is composed of a first connecting pipe 31a, a first connecting rod 31b, a second connecting pipe 31c, and a second connecting rod 31d from bottom to top. The outer periphery of the second connecting rod 31d is connected to the tank body 11 through a bearing seat, and the upper end of the second connecting rod 31d is connected to the output shaft of the drive motor. The thickness of the slip ring 221 is less than the longitudinal dimension of the exhaust port 312. When the baffle 21 reaches the position of the exhaust port 312, water vapor can be discharged quickly. This setting does not provide as high a sealing performance and strength as the tank body 11 in Embodiment 1, thereby reducing production costs. In addition, regarding the problem of water vapor condensing and accumulating at the upper end of the baffle 21, the accumulated water vapor can be extracted from the tank body 11 through the exhaust pipe 12.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A treatment device for the resource recovery of industrial waste salt, characterized in that... include: Evaporator (1), the evaporator (1) includes a tank body (11), and an electric heating wire (14) is laid inside the bottom of the tank body (11); and A support assembly (3) has a support shaft (31) and a drive motor. The lower part of the support shaft (31) is at least partially movable inside the tank body (11). The drive motor is located at the top of the tank body (11), and its output shaft is connected to the upper end of the support shaft (31). Both ends of the support shaft (31) are tubular structures. The upper part of the support shaft (31) has an exhaust port (312), and the lower part has a liquid inlet (311). The exhaust port (312) and the liquid inlet (311) are both located inside the tank body (11). The scraper assembly (2) includes a partition (21) and a scraper (23); the partition (21) is movably sleeved on the support shaft (31), and the outer edge of the partition (21) is slidably connected to the side wall of the tank (11) to divide the inner cavity of the tank (11) into an upper chamber and a lower chamber; the scraper (23) is fixedly disposed on the lower side of the partition (21); when the scraper (23) abuts against the bottom wall of the tank (11), the scraper (23) and the bottom wall of the tank (11) are in line contact; when the exhaust port (312) is at least partially located on the lower side of the partition (21), the upper chamber and the lower chamber are connected; and A limiting component is provided between the partition (21) and the support shaft (31) so that the partition (21) and the support shaft (31) can rotate coaxially under the action of external force; The support shaft (31) is composed of a first connecting pipe (31a), a connecting rod (31b), and a second connecting pipe (31c) from bottom to top; the liquid inlet (311) is located on the first connecting pipe (31a); the exhaust port (312) is located on the second connecting pipe (31c); the lower end of the first connecting pipe (31a) is rotatably connected to the bottom wall of the tank (11); The upper end of the second connecting pipe (31c) extends to the top of the tank (11) and is connected to the output end of the drive motor; The limiting assembly includes a connecting seat (22), a slide rail (32), and a fixed seat (33); the fixed seat (33) is fixedly sleeved on the connecting rod (31b); the connecting seat (22) includes a slip ring (221) and a lever (222); the lever (222) is located at the lower end of the slip ring (221); the slip ring (221) is sleeved on the support shaft (31) and located on the upper side of the fixed seat (33); the slide rail (32) is laid on the outer periphery of the support shaft (31); the slip ring (221) is slidably connected to the support shaft (31) through the slide rail (32); the outer periphery of the slip ring (221) is fixedly connected to the partition plate (21) and the slip ring (221) and the partition plate (21) are coaxial; the upper end of the fixed seat (33) is provided with a lever groove (331) that is adapted to the lever (222).

2. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The inner wall of the slip ring (221) is in seamless contact with the outer periphery of the support shaft (31).

3. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The thickness of the slip ring (221) is not less than the longitudinal dimension of the exhaust port (312).

4. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The thickness of the slip ring (221) is less than the longitudinal dimension of the exhaust port (312).

5. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The outer diameter of the partition (21) matches the inner diameter of the tank (11); the outer edge of the partition (21) is coated with a layer of sealant; the sealant is pressed against the inner wall of the tank (11).

6. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The processing device also includes a three-way valve (4); the three-way valve (4) has a first outlet (41), an inlet (42) and a second outlet (43), the second outlet (43) being connected to a first connecting pipe (31a).

7. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The heating wire (14) is evenly laid around the axis of the tank body (11).

8. The treatment device for industrial waste salt resource utilization according to claim 1, characterized in that: The top and bottom walls of the tank (11) are both cylindrical; the inlet (311) is located at the center of the bottom wall.

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