Concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration

Abstract

The invention discloses a concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration, belongs to the technical field of hydrochloric acid regeneration, and aims to solve the problem that the heating efficiency of heating plates becomes low due to the fact that a large number of iron compounds are easily attached to the surfaces of the heating plates during long-time use. A cross rod is arranged in the box body, a plurality of evenly-distributed first connecting columns are fixed to one side face of the cross rod, and scrapers are fixed to one ends of the first connecting columns; according to the device, a first positioning plate can be pushed to obliquely move downwards through a rotating rod and a rolling wheel, so that a scraper can obliquely move downwards to scrape an iron compound attached to the surface of a heating plate, and the scraper can move upwards after moving downwards through a spring; therefore, the iron compound attached to the surface of the heating plate can be scraped and cleaned, and the situation that the heating efficiency of the heating plate becomes low due to the fact that a large number of iron compounds are prone to being attached to the surface of the heating plate after long-time use is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of hydrochloric acid regeneration, and in particular relates to a concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration. Background Art

[0002] Hydrochloric acid is an inorganic strong acid with important industrial and laboratory uses. From the appearance, pure hydrochloric acid is a colorless and transparent liquid with a strong pungent smell. When this smell spreads in the air, it is easy to be detected by people, and if the concentration is high, it will cause strong irritation to the respiratory tract and eyes of people. Hydrochloric acid is very corrosive. It can react with many metals, such as iron and zinc, to produce corresponding metal chlorides and hydrogen. In this process, the metal will gradually be corroded and dissolved. At the same time, hydrochloric acid also has a strong corrosive effect on skin, clothing, etc., so strict protective measures must be taken when using hydrochloric acid, such as wearing protective gloves, goggles, etc. In industrial production, hydrochloric acid has a wide range of applications. In the metallurgical industry, hydrochloric acid can be used to pickle steel, remove rust and impurities on the surface of steel, make the surface of steel smoother and neater, and prepare for subsequent processing and use. In the chemical industry, hydrochloric acid is the raw material for the production of many important chemicals, such as chlorides, dyes, and medicines. In addition, hydrochloric acid can also be used for acidification in the petroleum industry to increase the recovery rate of oil. In the laboratory, hydrochloric acid is also a commonly used reagent. It can be used to adjust the pH value of the solution to make the experimental conditions more in line with the requirements. In chemical analysis, hydrochloric acid can be used to dissolve certain samples for further testing and analysis. There are many methods for preparing hydrochloric acid. One common method is to generate hydrogen chloride gas through the reaction of chlorine and hydrogen, and then pass the hydrogen chloride gas into water to obtain hydrochloric acid. In this process, the reaction conditions need to be strictly controlled to ensure the quality and safety of the product. Many steel companies need to use hydrochloric acid to pickle the steel they produce, clean the rust on the outer surface of the steel, and make the outer surface of the steel more tidy. Some companies need to use concentrated hydrochloric acid. In the process of using concentrated hydrochloric acid, there will be a lot of concentrated hydrochloric acid that cannot be recovered well after use. Some cotton cloth production companies need to use hydrochloric acid for pickling treatment, which can degrade the dyes in cotton cloth, but many hydrochloric acids cannot be recovered well after the pickling equipment.

[0003] However, when treating waste hydrochloric acid, for some iron materials, the waste hydrochloric acid contains a large amount of iron ions. Under high temperature conditions, the waste hydrochloric acid will generate iron compounds and hydrochloric acid gas. When used for a long time, a large amount of iron compounds are easily attached to the surface of the heating plate, resulting in low heating efficiency of the heating plate.

[0004] Therefore, a concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration is needed to solve the problem in the prior art that a large amount of iron compounds are easily attached to the surface of the heating plate during long-term use, resulting in a low heating efficiency of the heating plate. Summary of the invention

[0005] The object of the present invention is to provide a concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration, comprising a box body, a plurality of uniformly and obliquely distributed heating plates are fixed to one side of the inner wall of the box body, a cross bar is arranged in the box body, a plurality of uniformly distributed first connecting columns are fixed to one side of the cross bar, a scraper is fixed to one end of the first connecting column, the scraper cooperates with the heating plate, a first positioning plate is fixed to the middle part of the other side of the cross bar, a fixing plate is fixed between the top and bottom surfaces of the inner wall of the box body, an opening is opened on one side of the first positioning plate, the fixing plate is engaged with the opening, a rotating shaft is movably connected to one side of the fixing plate, a rotating rod is fixed to one side of the outer wall of the rotating shaft, a roller is movably connected to one end of the rotating rod, the roller cooperates with the positioning plate, and a reset component is arranged on the other side of the fixing plate.

[0007] Furthermore, the reset assembly includes a second positioning plate, the second positioning plate is fixed to the other side of the fixing plate, a limiting column is fixed to one side of the second positioning plate, a spring is provided on the outer side wall of the limiting column, and the limiting column is movably connected to the second positioning plate.

[0008] Furthermore, a storage box is fixed to one side of the bottom surface of the inner wall of the box body, and the storage box corresponds to a plurality of the heating plates.

[0009] Furthermore, a connecting rod is fixed to the middle of a side surface of the scraper away from the heating plate, a pressing frame is fixed to the bottom end of the connecting rod, and the pressing frame is located in the storage box.

[0010] Furthermore, an exhaust pipe is connected through one side of the outer wall of the box body, a fan is fixed to the inner wall of the exhaust pipe, a cold chain pipe is connected through the bottom of one side of the outer wall of the exhaust pipe, and a collection box is fixed to the bottom of one side of the outer wall of the box body.

[0011] Furthermore, a plurality of baffles evenly distributed and matched with the heating plate are fixed on one side of the inner wall of the box body.

[0012] Furthermore, a plurality of evenly distributed positioning frames are provided on the other side of the box body, the first connecting column is correspondingly engaged in the positioning frame, a first connecting plate is fixed between two adjacent positioning frames close to each other on the top of a side surface, a second connecting plate is fixed between two adjacent positioning frames close to each other on the bottom of a side surface, a vertical rod is fixed to the bottom surface of the second connecting plate, and the bottom surface of the vertical rod is fixed to the bottom surface of the inner wall of the box body.

[0013] Furthermore, a first gear is fixed to the other side of the outer wall of the rotating shaft, a mounting plate is fixed to the other side of the fixing plate, a motor is fixed to one side of the mounting plate, a second gear is fixed to the output end of the motor, and the first gear is meshed with the second gear.

[0014] Furthermore, a side surface of the inner wall of the box body is provided with a plurality of evenly distributed limiting grooves, a second connecting column is fixed to one end of the scraper, the second connecting column is engaged in the corresponding limiting groove, and a nozzle is connected through the top surface of the inner wall of the box body.

[0015] Furthermore, a PLC controller is fixed to the other side of the outer wall of the box body, and the plurality of heating plates are electrically connected to the PLC controller.

[0016] Compared with the prior art, the concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration provided by the present invention has at least the following beneficial effects: (1) The rotating rod and the roller are arranged so that the first positioning plate can be pushed to tilt downward, thereby enabling the scraper to tilt downward to scrape off the iron compounds attached to the surface of the heating plate. The spring is arranged so that the scraper can move upward after moving downward, thereby enabling the iron compounds attached to the surface of the heating plate to be scraped off and cleaned, thereby avoiding the situation in which a large amount of iron compounds are easily attached to the surface of the heating plate during long-term use, resulting in a low heating efficiency of the heating plate.

[0017] (2) By tilting the heating plate, the waste hydrochloric acid can fall onto the surface of the heating plate more evenly, thus avoiding the situation where a large amount of waste hydrochloric acid is placed at the same position of the heating plate when the heating plate is set horizontally, resulting in poor utilization of the heating plate.

[0018] (3) The fan is provided so that the generated hydrochloric acid gas can be sucked into the condenser, and the hydrochloric acid gas can be liquefied through the condenser, so that the hydrochloric acid can be easily recovered.

[0019] (4) The scraped iron compounds can be collected by the provided storage box, and the iron compounds in the storage box can be squeezed by the provided pressing frame, thereby improving the space utilization of the storage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the vertical rod structure of the present invention; Figure 3 For the present invention Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part; Figure 4 It is a schematic diagram of the overall side view structure of the present invention; Figure 5 This is a schematic diagram of the fixing plate structure of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure of B in the middle; Figure 7 It is a schematic diagram of the side view structure of the limiting column of the present invention; Figure 8 It is a schematic diagram of the side structure of the pressing frame of the present invention; Fig. 9 This is a schematic diagram of the storage box structure of the present invention; Fig.10 This is a schematic diagram of the positioning frame structure of the present invention; Fig.11 It is a schematic diagram of the crossbar structure of the present invention; Fig.12 It is a schematic diagram of the cross-sectional structure of the exhaust pipe of the present invention.

[0021] In the figure: 100, box body; 101, heating plate; 102, baffle; 103, scraper; 104, first connecting column; 105, cross bar; 200, first positioning plate; 201, opening; 202, fixing plate; 203, rotating shaft; 204, rotating rod; 205, roller; 300, connecting rod; 301, pressing frame; 302, storage box; 400, positioning frame; 401, first connecting plate; 402, second connecting plate; 403, vertical rod; 500, second positioning plate; 501, limiting column; 502, spring; 600, first gear; 601, second gear; 602, motor; 603, mounting plate; 700, exhaust pipe; 701, fan; 702, condenser; 703, collection box; 800, PLC controller; 801, nozzle; 900, limiting groove; 901, second connecting column. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0023] In the accompanying drawings, the size and relative size of components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments may be implemented differently, a specific process sequence may be performed in a different order than described. For example, two successively described processes may be performed substantially simultaneously or in an order opposite to the order described. In addition, the same reference numerals represent the same components.

[0024] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0025] A specific embodiment of the present invention, as Figure 1-Figure 12As shown, a concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration is disclosed, comprising a box 100, a side of the inner wall of the box 100 is fixed with a plurality of uniformly and obliquely distributed heating plates 101, a cross bar 105 is arranged in the box 100, a side of the cross bar 105 is fixed with a plurality of uniformly distributed first connecting columns 104, a scraper 103 is fixed at one end of the first connecting column 104, the scraper 103 cooperates with the heating plate 101, and a first positioning plate 20 is fixed in the middle of the other side of the cross bar 105 0, a fixing plate 202 is fixed between the top and bottom surfaces of the inner wall of the box body 100, an opening 201 is opened on one side of the first positioning plate 200, the fixing plate 202 is engaged with the opening 201, a rotating shaft 203 is movably connected to one side of the fixing plate 202, a rotating rod 204 is fixed to one side of the outer wall of the rotating shaft 203, a roller 205 is movably connected to one end of the rotating rod 204, the roller 205 cooperates with the positioning plate, and a reset component is arranged on the other side of the fixing plate 202.

[0026] As a further solution of the present invention, the reset assembly includes a second positioning plate 500, which is fixed to the other side of the fixed plate 202. A limiting column 501 is fixed to one side of the second positioning plate 500, and a spring 502 is provided on the outer wall of the limiting column 501. The limiting column 501 is movably connected to the second positioning plate 500.

[0027] By setting a reset component, after the first positioning plate 200 moves down, when the spring 502 is stretched and needs to release the elastic force, the spring 502 can pull the first positioning plate 200 upward, thereby driving the scraper 103 to move upward to scrape off the iron compounds on the surface of the heating plate 101.

[0028] As a further solution of the present invention, a storage box 302 is fixed to one side of the bottom surface of the inner wall of the box body 100 , and the storage box 302 corresponds to a plurality of the heating plates 101 .

[0029] The storage box 302 is provided so that the scraped iron compounds can be stored in the storage box 302 .

[0030] This solution has the following working process: when the waste hydrochloric acid is recovered, the top of the nozzle 801 is first connected to the waste hydrochloric acid discharge pipe, and the PLC controller 800 is operated. The PLC controller 800 controls several heating plates 101 to start synchronously, and the fan 701 and the condenser 702 are started. The waste hydrochloric acid is discharged from the nozzle 801 and sprayed onto the surface of the heating plate 101. At this time, the waste hydrochloric acid generates hydrochloric acid gas and iron compounds. The hydrochloric acid gas is sucked by the fan 701 and enters the condenser 702 to be condensed, forming liquid water droplets and flowing into the collection box 703. After a period of use, a large amount of iron compounds are attached to the surface of the heating plate 101, which makes the heating efficiency of the heating plate 101 low. At this time, the motor 602 is started, and the rotation of the motor 602 drives the second gear 601 to rotate, and the rotation of the second gear 601 drives the first gear 600 to rotate, and the rotation of the first gear 600 drives the rotating shaft 203 to rotate, and the rotation of the rotating shaft 203 drives the rotating rod 204 to rotate, and the rotating rod 204 rotates The roller 205 pushes the first positioning plate 200 to move, and the spring 502 is slowly compressed. The elastic force of the compressed spring 502 is much greater than the gravity of the scraper 103 and the pressing frame 301, so that the spring 502 can push the scraper 103 to move upward when the elastic force is released. When the first positioning plate 200 moves, the scraper 103 moves, and the scraper 103 scrapes the iron compounds attached to the surface of the heating plate 101. The scraped iron compounds enter the storage box 302 and are collected. When the rotating rod 204 is vertically distributed with the first positioning plate 200, the rotating rod 204 continues to rotate, and the spring 502 releases the elastic force to push the first positioning plate 200 to tilt upward, and this is repeated. The scraper 103 scrapes the iron compound on the surface of the heating plate 101 back and forth. When the scraper 103 moves back and forth, it drives the pressing frame 301 to move back and forth. The pressing frame 301 reciprocates and squeezes the iron compound in the storage box 302, so that the iron compound in the storage box 302 is in a fixed state.

[0031] According to the above working process, it can be known that: by means of the rotating rod 204 and the roller 205, the first positioning plate 200 can be pushed to tilt downward, and then the scraper 103 can tilt downward to scrape off the iron compounds attached to the surface of the heating plate 101. By means of the spring 502, the scraper 103 can move upward after moving downward, so that the iron compounds attached to the surface of the heating plate 101 can be scraped off and cleaned, thereby avoiding the situation in which a large amount of iron compounds are easily attached to the surface of the heating plate 101 during long-term use, resulting in a low heating efficiency of the heating plate 101.

[0032] By tilting the heating plate 101, the waste hydrochloric acid can fall onto the surface of the heating plate 101 more evenly, thus avoiding the situation where a large amount of waste hydrochloric acid is placed at the same position of the heating plate 101 when the heating plate 101 is set horizontally, causing the utilization rate of the heating plate 101 to deteriorate.

[0033] The fan 701 is provided so that the generated hydrochloric acid gas can be sucked into the condenser 702, and the hydrochloric acid gas can be liquefied through the condenser 702, so that the hydrochloric acid can be easily recovered.

[0034] The scraped iron compounds can be collected by the provided storage box 302 , and the iron compounds in the storage box 302 can be squeezed by the provided pressing frame 301 , thereby improving the space utilization of the storage box 302 .

[0035] As a further solution of the present invention, a connecting rod 300 is fixed to the middle of a side of the scraper 103 away from the heating plate 101 , a pressing frame 301 is fixed to the bottom end of the connecting rod 300 , and the pressing frame 301 is located in the storage box 302 .

[0036] The pressing frame 301 is provided so that the iron compound in the storage box 302 can be squeezed and shaped, thereby increasing the storage area in the storage box 302 .

[0037] As a further solution of the present invention, an exhaust pipe 700 is connected through one side of the outer wall of the box body 100, a fan 701 is fixed to the inner wall of the exhaust pipe 700, a cold chain pipe is connected through the bottom of one side of the outer wall of the exhaust pipe 700, and a collection box 703 is fixed to the bottom of one side of the outer wall of the box body 100.

[0038] By providing the fan 701 , the hydrochloric acid gas generated in the box 100 can be sucked into the condenser 702 by the fan 701 , and then enter the collection box 703 .

[0039] As a further solution of the present invention, a plurality of baffles 102 evenly distributed and matched with the heating plate 101 are fixed to one side of the inner wall of the box body 100 .

[0040] By setting the baffle 102 , part of the waste hydrochloric acid discharged from the nozzle 801 can be blocked by the baffle 102 , thereby preventing the waste hydrochloric acid from directly falling into the storage box 302 before contacting the heating plate 101 .

[0041] As a further solution of the present invention, a plurality of evenly distributed positioning frames 400 are provided on the other side of the box body 100, the first connecting column 104 is correspondingly engaged in the positioning frame 400, a first connecting plate 401 is fixed between two adjacent positioning frames 400 close to each other at the top of a side surface, a second connecting plate 402 is fixed between two adjacent positioning frames 400 close to each other at the bottom of a side surface, a vertical rod 403 is fixed to the bottom surface of the second connecting plate 402, and the bottom surface of the vertical rod 403 is fixed to the bottom surface of the inner wall of the box body 100.

[0042] By providing the positioning frame 400 , the position of the first connecting column 104 can be movably limited, thereby facilitating the stable movement of the scraper 103 .

[0043] As a further solution of the present invention, a first gear 600 is fixed to the other side of the outer wall of the rotating shaft 203, a mounting plate 603 is fixed to the other side of the fixed plate 202, a motor 602 is fixed to one side of the mounting plate 603, a second gear 601 is fixed to the output end of the motor 602, and the first gear 600 is meshed with the second gear 601.

[0044] By means of the first gear 600 , the second gear 601 and the motor 602 , the rotating shaft 203 can rotate, thereby driving the rotating rod 204 to rotate and pushing the first positioning plate 200 to move.

[0045] As a further solution of the present invention, a plurality of evenly distributed limiting grooves 900 are opened on a side surface of the inner wall of the box body 100, a second connecting column 901 is fixed to one end of the scraper 103, the second connecting column 901 is engaged in the corresponding limiting groove 900, and a nozzle 801 is connected to the top surface of the inner wall of the box body 100.

[0046] By means of the setting of the limiting groove 900 and the second connecting column 901 , the position of the scraper 103 can be further movably limited, and by means of the setting of the nozzle 801 , the waste hydrochloric acid can be sprayed from the nozzle 801 into the box body 100 .

[0047] As a further solution of the present invention, a PLC controller 800 is fixed to the other side of the outer wall of the box body 100 , and a plurality of the heating plates 101 are electrically connected to the PLC controller 800 .

[0048] By setting up the PLC controller 800, several heating plates 101 can be started simultaneously, thereby facilitating heating of the hydrochloric acid.

[0049] The heating plate 101 , the scraper 103 , the connecting rod 300 , the fixing plate 202 , and the positioning frame 400 are all at an angle of 45 degrees to the horizontal. The baffle 102 and the heating plate 101 are vertically arranged, and the first positioning plate 200 and the fixing plate 202 are vertically distributed.

[0050] In summary: when the waste hydrochloric acid is recovered, firstly, the top of the nozzle 801 is connected to the waste hydrochloric acid discharge pipe, and the PLC controller 800 is operated. The PLC controller 800 controls several heating plates 101 to start synchronously, and the fan 701 and the condenser 702 are started. The waste hydrochloric acid is discharged from the nozzle 801 and sprayed onto the surface of the heating plate 101. At this time, the waste hydrochloric acid generates hydrochloric acid gas and iron compounds. The hydrochloric acid gas is sucked by the fan 701 and enters the condenser 702 to be condensed, forming liquid water droplets and flowing into the collection box 703. After a period of use, a large amount of iron compounds are attached to the surface of the heating plate 101, which makes the heating efficiency of the heating plate 101 low. At this time, the motor 602 is started, and the rotation of the motor 602 drives the second gear 601 to rotate, and the rotation of the second gear 601 drives the first gear 600 to rotate, and the rotation of the first gear 600 drives the rotating shaft 203 to rotate, and the rotation of the rotating shaft 203 drives the rotating rod 204 to rotate, and the rotation of the rotating rod 204 causes the roller 205 pushes the first positioning plate 200 to move, at this time the spring 502 is slowly compressed, the elastic force of the compressed spring 502 is much greater than the gravity of the scraper 103 and the pressing frame 301, so that the spring 502 can push the scraper 103 to move upward when the elastic force is released, and the scraper 103 is driven to move when the first positioning plate 200 moves, and the scraper 103 scrapes the iron compounds attached to the surface of the heating plate 101, and the scraped iron compounds enter the storage box 302 and are collected, when the rotating rod 204 is vertically distributed with the first positioning plate 200, the rotating rod 204 continues to rotate, and the spring 502 releases the elastic force to push the first positioning plate 200 to tilt upward, and so on and so forth, the scraper 103 scrapes the iron compounds on the surface of the heating plate 101 back and forth, and the pressing frame 301 is driven to move back and forth when the scraper 103 moves back and forth, and the pressing frame 301 reciprocates and squeezes the iron compounds in the storage box 302, so that the iron compounds in the storage box 302 are in a fixed state.

[0051] The heating plate 101, the motor 602, the fan 701, the condenser 702 and the PLC controller 800 can all be purchased on the market, and are mature technologies in this field and have been fully disclosed, so they are not repeated in the specification.

[0052] 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 concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration, comprising a housing (100), characterized in that: A plurality of uniformly and obliquely distributed heating plates (101) are fixed to one side of the inner wall of the box body (100); a cross bar (105) is arranged inside the box body (100); a plurality of uniformly distributed first connecting columns (104) are fixed to one side of the cross bar (105); a scraper (103) is fixed to one end of the first connecting column (104); the scraper (103) cooperates with the heating plates (101); a first positioning plate (200) is fixed to the middle of the other side of the cross bar (105); and the top surface of the inner wall of the box body (100) and the A fixing plate (202) is fixed between the bottom surfaces; an opening (201) is provided on one side of the first positioning plate (200); the fixing plate (202) is engaged with the opening (201); a rotating shaft (203) is movably connected to one side of the fixing plate (202); a rotating rod (204) is fixed to one side of the outer wall of the rotating shaft (203); a roller (205) is movably connected to one end of the rotating rod (204); the roller (205) cooperates with the positioning plate; and a reset component is provided on the other side of the fixing plate (202).

2. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 1, characterized in that: The reset assembly comprises a second positioning plate (500), the second positioning plate (500) being fixed to the other side of the fixing plate (202), a limiting column (501) being fixed to one side of the second positioning plate (500), a spring (502) being provided on the outer side wall of the limiting column (501), and the limiting column (501) being movably connected to the second positioning plate (500).

3. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 2, characterized in that: A storage box (302) is fixed to one side of the bottom surface of the inner wall of the box body (100), and the storage box (302) corresponds to a plurality of the heating plates (101).

4. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 3, characterized in that: A connecting rod (300) is fixed to the middle of a side surface of the scraper (103) away from the heating plate (101), a pressing frame (301) is fixed to the bottom end of the connecting rod (300), and the pressing frame (301) is located in the storage box (302).

5. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 4, characterized in that: An exhaust pipe (700) is connected through one side of the outer wall of the box body (100), a fan (701) is fixed to the inner wall of the exhaust pipe (700), a cold chain pipe is connected through the bottom of one side of the outer wall of the exhaust pipe (700), and a collection box (703) is fixed to the bottom of one side of the outer wall of the box body (100).

6. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 5, characterized in that: A plurality of baffles (102) evenly distributed and matched with the heating plate (101) are fixed to one side of the inner wall of the box body (100).

7. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 6, characterized in that: A plurality of evenly distributed positioning frames (400) are arranged on the other side of the box body (100); the first connecting column (104) is correspondingly engaged in the positioning frame (400); a first connecting plate (401) is fixed between the tops of two adjacent positioning frames (400) close to each other on one side; a second connecting plate (402) is fixed between the bottoms of two adjacent positioning frames (400) close to each other on one side; a vertical rod (403) is fixed to the bottom surface of the second connecting plate (402); and the bottom surface of the vertical rod (403) is fixed to the bottom surface of the inner wall of the box body (100).

8. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 7, characterized in that: A first gear (600) is fixed to the other side of the outer wall of the rotating shaft (203), a mounting plate (603) is fixed to the other side of the fixing plate (202), a motor (602) is fixed to one side of the mounting plate (603), a second gear (601) is fixed to the output end of the motor (602), and the first gear (600) is meshed with the second gear (601).

9. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 8, characterized in that: A plurality of evenly distributed limiting grooves (900) are provided on one side of the inner wall of the box body (100); a second connecting column (901) is fixed to one end of the scraper (103); the second connecting column (901) is engaged in the corresponding limiting groove (900); and a nozzle (801) is connected through the top surface of the inner wall of the box body (100).

10. A concentrated hydrochloric acid recovery mechanism for hydrochloric acid regeneration according to claim 9, characterized in that: A PLC controller (800) is fixed to the other side of the outer wall of the box body (100), and a plurality of the heating plates (101) are electrically connected to the PLC controller (800).

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