Concentration equipment for purifying and recycling waste hydrochloric acid

Abstract

The invention provides concentration equipment for waste hydrochloric acid purification and recovery, and relates to the field of waste hydrochloric acid purification, the concentration equipment comprises a concentration machine table, a supporting plate is mounted in the middle of the concentration machine table, a concentration tower is mounted above the supporting plate, a refrigeration compressor is mounted below the supporting plate, and the concentration equipment further comprises a condensation part, a stirring mechanism, a scraping mechanism and a driving mechanism. A driving motor works to drive a bevel gear II to be meshed with a bevel gear I, so that a hollow shaft pipe is driven to rotate, the hollow shaft pipe stirs and mixes a solution through stirring blades during rotation, the overall evaporation efficiency of the concentration tower is improved, and the bevel gear II synchronously drives a guide rail to move during rotation; when the guide rail moves, the balance rod moves in the retaining groove to keep the height unchanged, and moves upwards when moving in the swing groove, so that the ejector rod is driven to jack the lapping rod, the clamping block is clamped with the butt joint ring, and at the moment, when the stirring rod rotates, the butt joint ring and the scraper are driven to clean the interior of the concentration tower.

Description

Technical Field

[0001] The invention relates to the field of waste hydrochloric acid purification, and in particular to a concentrating device for purifying and recovering waste hydrochloric acid. Background Art

[0002] Iron-containing waste hydrochloric acid is generally produced in the purification process of surface treatment in the chemical, metallurgical, mechanical, electroplating and other industries. It cannot be discharged directly into the environment and needs to be properly handled and disposed of. Therefore, the purification of iron-containing waste hydrochloric acid is an essential production process in recycling.

[0003] In the prior art, waste hydrochloric acid is placed inside a concentration tower, and the concentration tower is heated to a certain temperature, the waste hydrochloric acid begins to evaporate, and the evaporated hydrochloric acid reaches a condensation tower and begins to condense, thereby achieving the effect of recovering the waste hydrochloric acid.

[0004] However, the waste hydrochloric acid contains crystallizable impurities, which form accumulation of solid crystals on the inner surface of the concentration tower. The accumulation causes the heat transfer efficiency of the concentration tower to decrease, thereby causing the internal components of the concentration tower to rupture.

[0005] For example, patent application CN221815316U discloses a concentrating tower for purifying and recovering waste hydrochloric acid, specifically comprising: a motor is provided on the surface of the concentrating tower, a transverse column is provided on the surface of the concentrating tower, a transverse chute is provided on the surface of the transverse column, a vertical column is provided on the surface of the transverse column, and a vertical chute is provided on the surface of the vertical column, and a rotating plate and a rotating table are provided on the surface of the rotating shaft; the device realizes the function of cleaning the impurities accumulated at the bottom of the concentrating tower through the transverse column, and the vertical column realizes the function of cleaning the impurities accumulated on the inner surface of the concentrating tower, and the fan blade realizes the function of crushing the impurities to prevent the crystallized impurities from being adsorbed on the vertical column, and the rotating plate ensures the stability of the rotation of the rotating shaft. At the same time, the rotating plate will strengthen the sealing of the concentrating tower to prevent the waste hydrochloric acid from leaking from the concentrating tower, and the rotating table realizes the effect of secondary sealing of the waste hydrochloric acid. However, in actual use, it is found that when this method is used to clean the concentrating tower, long-term wear can easily cause damage to the inner wall of the concentrating tower, affecting the overall service life of the concentrating tower. Therefore, we have made improvements to this and proposed a concentrating device for purifying and recovering waste hydrochloric acid. Summary of the invention

[0006] The object of the present invention is to provide a concentrating device for purifying and recovering waste hydrochloric acid, which continuously stirs multiple solutions evenly during purification and intermittently cleans the inner wall of the concentrating tower.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides a concentrating device for purifying and recovering waste hydrochloric acid, comprising a concentrating machine, a support plate is installed in the middle of the concentrating machine, a concentrating tower is installed above the support plate, a refrigeration compressor is installed below the support plate, and the support plate is connected to the concentrating machine to support the concentrating tower and the refrigeration compressor, and also includes:

[0008] A condensing component is connected to the top of the inner wall of the concentration tower, and is connected to the refrigeration compressor through a pipeline to form a refrigeration circuit. The condensing component can condense the steam;

[0009] A stirring mechanism, connected to the middle of the concentration tower, is used to stir the liquid inside the concentration tower;

[0010] The scraper mechanism is slidably mounted on the side wall of the concentration tower and is in contact with the concentration tower. When the scraper mechanism slides relative to the concentration tower, the crystals on the side wall of the concentration tower can be removed;

[0011] The driving mechanism is installed on the top of the concentration tower to drive the stirring mechanism and the scraping mechanism to move.

[0012] As a preferred technical solution of the present invention, the condensation component includes a condensation plate fixedly connected to the inner wall of the concentration tower, the inner wall of the condensation plate is spirally wound with a condensation tube, both ends of the condensation tube are respectively connected with adapters, the adapters are connected to the pipeline, the adapters are convenient for connection to the refrigeration compressor, the condensation tube is spirally wound in the condensation plate, the condensation plate can be cooled and the condensation effect is ensured, the condensation plate is funnel-shaped as a whole, and condensation is convenient.

[0013] As a preferred technical solution of the present invention, the stirring mechanism includes a hollow shaft tube rotatably connected to the inner wall of the concentration tower through a bearing, the outer wall of the hollow shaft tube is fixedly installed with a blade clamp seat by bolts, the side wall of the blade clamp seat is detachably connected with a stirring blade by bolts, the bottom of the hollow shaft tube is rotatably connected with a lever, one end of the lever is fixedly connected with a clamping block, the lever can be rotated up and down relative to the hollow shaft tube to adjust the angle, when the hollow shaft tube rotates, it can directly drive the stirring blade to rotate and stir, the stirring blade and the blade clamp seat are detachably connected, so as to facilitate the replacement of different stirring blades.

[0014] As a preferred technical solution of the present invention, the scraping mechanism includes an upper retaining ring, the outer wall of the upper retaining ring is fixedly connected to a slip ring, the slip ring is slidably installed on the inner wall of the concentration tower, the bottom of the slip ring is fixedly connected to two scrapers, the bottom of the scraper is fixedly connected to a docking ring, the bottom of the docking ring has a plurality of serrated protrusions matched with the clamping block, and the top of the inner wall of the concentration tower is provided with a sliding groove matched with the slip ring, and when the slip ring and the docking ring rotate, the scraper is driven to clean the inner wall of the concentration tower.

[0015] As a preferred technical solution of the present invention, the driving mechanism includes a sliding rod inserted into the inner wall of the hollow shaft tube, the bottom of the sliding rod is rotatably connected to a push rod through a bearing, one end of the push rod is rotatably connected to the lever, the sliding rod can slide up and down in the hollow shaft tube, and the sliding of the sliding rod up and down is driven by a guide rail.

[0016] As a preferred technical solution of the present invention, the bottom of one end of the supporting rod is also fixedly connected to a vertical rod, and the bottom end of the vertical rod is fixedly connected to an arc-shaped push plate, which is attached to the bottom of the concentration tower to collect the crystallized objects for easy removal.

[0017] As a preferred technical solution of the present invention, the driving mechanism also includes a bevel gear 1 fixedly connected to the top of the hollow shaft tube, the outer wall of the bevel gear 1 is meshed with a bevel gear 2, and the middle part of the bevel gear 2 is fixedly connected to the output end of the driving motor through a connecting shaft. When the driving motor is working, it can drive the bevel gear 2 to rotate, and the bevel gear 2 drives the bevel gear 1 to drive the hollow shaft tube to rotate.

[0018] As a preferred technical solution of the present invention, the driving mechanism also includes a guide rail fixedly connected to the middle part of the second bevel gear, the inner wall of the guide rail is provided with a retaining groove and a swinging groove connected to the retaining groove, the top of the slide rod is fixedly connected to a balance rod, one end of the balance rod is slidably installed inside the retaining groove or the swinging groove, when the balance rod slides in the retaining groove, it is in a balanced state, when the balance rod moves in the swinging groove, it moves toward the center of the guide rail, so that the slide rod moves upward.

[0019] As a preferred technical solution of the present invention, the concentrating tower includes a tank body and a cover plate detachably connected to the top of the tank body by bolts, an injection pipe is arranged on the cover plate, the top of the injection pipe is rotatably connected to an end cover, the bottom of the tank body includes a rotatably connected box door and a fixedly connected discharge pipe, and the cover plate is opened to facilitate maintenance of the parts inside the concentrating tower, and the concentrating tower can be fed by opening the end cover on the top of the injection pipe.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the scheme of the present invention:

[0022] 1. Through the setting of the concentration tower, refrigeration compressor and condensation components, when the concentration tower is evaporating and purifying, the steam will condense at the condensation plate position, and the refrigeration compressor will cool down the condensation plate through the condensation pipe, so as to ensure that the condensation plate can effectively condense;

[0023] 2. Through the setting of the stirring mechanism, the scraping mechanism and the driving mechanism, the driving motor drives the bevel gear 2 to engage the bevel gear 1, thereby driving the hollow shaft tube to rotate. When the hollow shaft tube rotates, the solution is stirred and mixed by the stirring blades, thereby promoting the overall evaporation efficiency of the concentration tower. When the bevel gear 2 rotates, it also drives the guide rail to move synchronously. When the guide rail moves, the balance bar moves in the holding groove to maintain a constant height, and moves upward when moving in the swing groove, thereby driving the top rod to lift the bridge rod, so that the clamping block is engaged with the docking ring. At this time, when the stirring rod rotates, it will drive the docking ring and the scraper to move inside the concentration tower. When the clamping block is disengaged from the docking ring, the scraper stops moving, thereby achieving the purpose of intermittent cleaning of the inner wall of the concentration tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of a waste hydrochloric acid purification and recovery concentrator provided by the present invention;

[0025] Figure 2 A schematic diagram of the partial structure of a concentrating device for purifying and recovering waste hydrochloric acid provided by the present invention;

[0026] Figure 3 A schematic diagram of the main cross-sectional structure of a concentrating device for purifying and recovering waste hydrochloric acid provided by the present invention;

[0027] Figure 4 A schematic diagram of the structure of a condensing component, a stirring mechanism, a driving mechanism and a scraping mechanism of a concentrating device for purifying and recovering waste hydrochloric acid provided by the present invention;

[0028] Figure 5 A schematic diagram of the structure of a stirring mechanism, a driving mechanism and a scraping mechanism of a concentrating device for purifying and recovering waste hydrochloric acid provided by the present invention;

[0029] Figure 6 A concentrating device for purifying and recovering waste hydrochloric acid provided by the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0030] Figure 7 A schematic diagram of the structure of a scraping mechanism of a concentration device for purifying and recovering waste hydrochloric acid provided by the present invention;

[0031] Figure 8 This is a structural schematic diagram of a state in which a docking ring and a clamping block of a concentration device for purifying and recovering waste hydrochloric acid provided by the present invention are disengaged.

[0032] Indicated in the figure:

[0033] 10. Concentrator; 11. Support plate; 12. Concentrator tower; 121. Tank; 122. Cover plate; 123. Injection pipe; 124. Box door; 125. Drain pipe; 13. Refrigeration compressor;

[0034] 20. Condensation component; 21. Condensation plate; 22. Condensation tube; 23. Adapter; 24. Pipeline;

[0035] 30. stirring mechanism; 31. hollow shaft tube; 32. blade clamp seat; 33. stirring blade; 34. lever; 35. clamping block; 36. vertical rod; 37. arc-shaped push plate;

[0036] 40. Scraping mechanism; 41. Upper retaining ring; 42. Slip ring; 43. Scraper; 44. Docking ring;

[0037] 50. Driving mechanism; 51. Sliding rod; 52. Push rod; 53. Bevel gear one; 54. Bevel gear two; 55. Driving motor; 56. Guide rail; 57. Retaining groove; 58. Swinging groove; 59. Balance rod. DETAILED DESCRIPTION

[0038] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0039] See also Figures 1 to 8 The present invention provides a technical solution: a concentrating device for purifying and recovering waste hydrochloric acid, comprising a concentrating machine 10, a support plate 11 is installed in the middle of the concentrating machine 10, a concentrating tower 12 is installed above the support plate 11, a refrigeration compressor 13 is installed below the support plate 11, and the support plate 11 is connected to the concentrating machine 10 to support the concentrating tower 12 and the refrigeration compressor 13, and also includes:

[0040] The condensing component 20 is connected to the top of the inner wall of the concentrating tower 12, and is connected to the refrigeration compressor 13 through a pipeline 24 to form a refrigeration circuit. The condensing component 20 can condense the steam;

[0041] A stirring mechanism 30 is connected to the middle of the concentration tower 12 and is used to stir the liquid inside the concentration tower 12;

[0042] The scraper mechanism 40 is slidably mounted on the side wall of the concentration tower 12 and is in contact with the concentration tower 12. When the scraper mechanism 40 slides relative to the concentration tower 12, the crystals on the side wall of the concentration tower 12 can be removed;

[0043] The driving mechanism 50 is installed on the top of the concentration tower 12 to drive the stirring mechanism 30 and the scraping mechanism 40 to move.

[0044] As a preferred embodiment, on the basis of the above-mentioned method, further, the condensation component 20 includes a condensation plate 21 fixedly connected to the inner wall of the concentration tower 12, the inner wall of the condensation plate 21 is spirally wound with a condensation tube 22, both ends of the condensation tube 22 are respectively connected with adapters 23, the adapter 23 is connected to the pipeline 24, the adapter 23 is convenient for connecting to the refrigeration compressor 13, the condensation tube 22 is spirally wound in the condensation plate 21, the condensation plate 21 can be cooled to ensure the condensation effect, the condensation plate 21 is funnel-shaped as a whole, and it is convenient for condensation.

[0045] As a preferred embodiment, on the basis of the above-mentioned method, further, the stirring mechanism 30 includes a hollow shaft tube 31 rotatably connected to the inner wall of the concentration tower 12 through a bearing, the outer wall of the hollow shaft tube 31 is fixedly installed with a blade clamp seat 32 by bolts, the side wall of the blade clamp seat 32 is detachably connected with a stirring blade 33 by bolts, the bottom of the hollow shaft tube 31 is rotatably connected with a lever 34, one end of the lever 34 is fixedly connected with a clamping block 35, the lever 34 can be rotated up and down relative to the hollow shaft tube 31 to adjust the angle, when the hollow shaft tube 31 rotates, it can directly drive the stirring blade 33 to rotate and stir, the stirring blade 33 and the blade clamp seat 32 are detachably connected, so as to facilitate the replacement of different stirring blades.

[0046] As a preferred embodiment, on the basis of the above-mentioned method, further, the scraper mechanism 40 includes an upper retaining ring 41, the outer wall of the upper retaining ring 41 is fixedly connected with a slip ring 42, the slip ring 42 is slidably installed on the inner wall of the concentration tower 12, the bottom of the slip ring 42 is fixedly connected with two scrapers 43, the bottom of the scraper 43 is fixedly connected with a docking ring 44, the bottom of the docking ring 44 has a plurality of serrated protrusions adapted to the clamping block 35, and the top of the inner wall of the concentration tower 12 is provided with a sliding groove adapted to the slip ring 42, and when the slip ring 42 and the docking ring 44 rotate, the scraper 43 is driven to clean the inner wall of the concentration tower 12.

[0047] As a preferred embodiment, on the basis of the above method, further, the driving mechanism 50 includes a slide rod 51 inserted into the inner wall of the hollow shaft tube 31, the bottom of the slide rod 51 is rotatably connected to the top rod 52 through a bearing, one end of the top rod 52 is rotatably connected to the lever 34, the slide rod 51 can slide up and down in the hollow shaft tube 31, and the slide rod 51 is driven by a guide rail 56 to slide up and down. The bottom of one end of the lever 34 is also fixedly connected to the vertical rod 36, and the bottom end of the vertical rod 36 is fixedly connected to the arc-shaped pusher Plate 37, the arc-shaped push plate 37 is attached to the bottom of the concentration tower 12, and the crystallized objects can be collected for easy removal. The driving mechanism 50 also includes a bevel gear 1 53 fixedly connected to the top of the hollow shaft tube 31, and the outer wall of the bevel gear 1 53 is meshed with a bevel gear 2 54. The middle part of the bevel gear 2 54 is fixedly connected to the output end of the driving motor 55 through a connecting shaft. When the driving motor 55 is working, the bevel gear 2 54 can be driven to rotate, and the bevel gear 2 54 drives the bevel gear 1 53 to drive the hollow shaft tube 31 to rotate.

[0048] The driving mechanism 50 also includes a guide rail 56 fixedly connected to the middle part of the bevel gear 2 54. The inner side wall of the guide rail 56 is provided with a retaining groove 57 and a swinging groove 58 connected to the retaining groove 57. A balance bar 59 is fixedly connected to the top of the slide bar 51. One end of the balance bar 59 is slidably installed inside the retaining groove 57 or the swinging groove 58. When the balance bar 59 slides in the retaining groove 57, it is in a balanced state. When the balance bar 59 moves in the swinging groove 58, it moves toward the center of the guide rail 56, so the slide bar 51 moves upward.

[0049] As a preferred embodiment, on the basis of the above-mentioned method, further, the concentration tower 12 includes a tank body 121 and a cover plate 122 detachably connected to the top of the tank body 121 by bolts, an injection pipe 123 is arranged on the cover plate 122, the top of the injection pipe 123 is rotatably connected with an end cover, the bottom of the tank body 121 includes a rotatably connected box door 124 and a fixedly connected discharge pipe 125, after the cover plate 122 is opened, it is convenient to maintain the parts inside the concentration tower 12, and the concentration tower 12 can be fed by opening the end cover on the top of the injection pipe 123.

[0050] Specifically, when the concentrating equipment for purifying and recovering waste hydrochloric acid is working / in use: the inner wall of the concentrating tower 12 is arranged with an electric heating wire. When the concentrating tower 12 is powered on for heating and evaporation purification, the steam will condense at the position of the condensing plate 21. The refrigeration compressor 13 cools the condensing plate 21 through the condensing tube 22, thereby ensuring that the condensing plate 21 can effectively condense. The driving motor 55 drives the bevel gear 2 54 to engage the bevel gear 1 53, thereby driving the hollow shaft tube 31 to rotate. When the hollow shaft tube 31 rotates, the stirring blades 33 are used to stir and mix the solution, thereby promoting the overall evaporation efficiency of the concentrating tower 12. When the bevel gear 2 54 rotates, it also synchronously drives the guide rail 56 to move. When the guide rail 56 moves, the balance bar 59 moves in the retaining groove 57 to maintain the height. The hollow shaft tube 31 rotates and drives the docking ring 44 and the scraper 43 to move inside the concentration tower 12. When the docking block 35 is disengaged from the docking ring 44, the scraper 43 stops moving, thereby achieving the purpose of intermittent cleaning of the inner wall of the concentration tower 12. The docking ring 44 also drives the vertical rod 36 and the arc-shaped push plate 37 to move while moving. The arc-shaped push plate 37 scrapes the bottom of the concentration tower 12 so that the crystallized objects can be gathered for easy removal. After removal, open the box door 124 on the side wall of the concentration tower. When liquid needs to be discharged, open the discharge pipe 125 for discharge.

[0051] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A concentrating device for purifying and recovering waste hydrochloric acid, characterized in that: The invention comprises a concentrator (10), wherein a support plate (11) is installed in the middle of the concentrator (10), a concentrator tower (12) is installed above the support plate (11), and a refrigeration compressor (13) is installed below the support plate (11), and further comprises: A condensing component (20) is connected to the top of the inner wall of the concentration tower (12), and is connected to the refrigeration compressor (13) via a pipeline (24) to form a refrigeration circuit; A stirring mechanism (30) connected to the middle of the concentration tower (12) and used for stirring the liquid inside the concentration tower (12); A scraper mechanism (40) is slidably mounted on the side wall of the concentration tower (12) and is in contact with the concentration tower (12). When the scraper mechanism (40) slides relative to the concentration tower (12), crystals on the side wall of the concentration tower (12) can be removed; A driving mechanism (50) is installed at the top of the concentration tower (12) and is used to drive the stirring mechanism (30) and the scraping mechanism (40) to move.

2. A waste hydrochloric acid purification and recovery concentrating device according to claim 1, characterized in that: The condensation component (20) comprises a condensation plate (21) fixedly connected to the inner wall of the concentration tower (12), the inner wall of the condensation plate (21) is spirally wound with a condensation tube (22), both ends of the condensation tube (22) are respectively connected to adapters (23), and the adapters (23) are connected to the pipeline (24).

3. A waste hydrochloric acid purification and recovery concentrating device according to claim 1, characterized in that: The stirring mechanism (30) comprises a hollow shaft tube (31) rotatably connected to the inner wall of the concentration tower (12) via a bearing, a blade clamp seat (32) is fixedly mounted on the outer wall of the hollow shaft tube (31) via bolts, a stirring blade (33) is detachably connected to the side wall of the blade clamp seat (32) via bolts, a lever (34) is rotatably connected to the bottom of the hollow shaft tube (31), and a clamping block (35) is fixedly connected to one end of the lever (34).

4. A waste hydrochloric acid purification and recovery concentrating device according to claim 3, characterized in that: The scraping mechanism (40) comprises an upper retaining ring (41), the outer wall of the upper retaining ring (41) is fixedly connected to a slip ring (42), the slip ring (42) is slidably mounted on the inner wall of the concentration tower (12), the bottom of the slip ring (42) is fixedly connected to two scrapers (43), the bottom of the scraper (43) is fixedly connected to a docking ring (44), and the bottom of the docking ring (44) has a plurality of serrated protrusions that are compatible with the clamping block (35).

5. A waste hydrochloric acid purification and recovery concentrating device according to claim 4, characterized in that: The driving mechanism (50) comprises a sliding rod (51) inserted into the inner wall of the hollow shaft tube (31), the bottom of the sliding rod (51) is rotatably connected to a push rod (52) via a bearing, and one end of the push rod (52) is rotatably connected to a lever (34).

6. A waste hydrochloric acid purification and recovery concentrating device according to claim 5, characterized in that: The bottom of one end of the lever (34) is also fixedly connected to a vertical rod (36), and the bottom end of the vertical rod (36) is fixedly connected to an arc-shaped push plate (37).

7. The waste hydrochloric acid purification and recovery concentrating device according to claim 5, characterized in that: The driving mechanism (50) further comprises a bevel gear 1 (53) fixedly connected to the top of the hollow shaft tube (31), a bevel gear 2 (54) meshing with the outer wall of the bevel gear 1 (53), and a middle portion of the bevel gear 2 (54) fixedly connected to the output end of the driving motor (55) via a connecting shaft.

8. The waste hydrochloric acid purification and recovery concentrating device according to claim 7, characterized in that: The driving mechanism (50) further comprises a guide rail (56) fixedly connected to the middle part of the second bevel gear (54), the inner side wall of the guide rail (56) being provided with a retaining groove (57) and a swinging groove (58) connected to the retaining groove (57), the top of the slide bar (51) being fixedly connected to a balancing rod (59), one end of the balancing rod (59) being slidably mounted inside the retaining groove (57) or the swinging groove (58).

9. The waste hydrochloric acid purification and recovery concentrating device according to claim 1, characterized in that: The concentration tower (12) comprises a tank body (121) and a cover plate (122) detachably connected to the top of the tank body (121) by bolts, an injection pipe (123) is provided on the cover plate (122), the top of the injection pipe (123) is rotatably connected to an end cap, and the bottom of the tank body (121) comprises a rotatably connected box door (124) and a fixedly connected discharge pipe (125).

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