Sedimentation tank for potassium nitrate production wastewater treatment

Abstract

The utility model discloses a sedimentation tank for potassium nitrate production wastewater treatment, which comprises a sedimentation tank, a liquid inlet pipe and a liquid outlet pipe are respectively arranged on two sides of the sedimentation tank, a support is arranged at the top end of the sedimentation tank, and a horizontal driving mechanism is mounted on the support; the output end of the horizontal driving mechanism is connected with a precipitant adding pipe which is horizontally arranged, a plurality of spray heads are mounted at the bottom end of the precipitant adding pipe, and the spray heads are distributed at the bottom end of the precipitant adding pipe at equal intervals; one end of the precipitant adding pipe is connected with a liquid guide pipe, a precipitant storage tank is placed on one side of the sedimentation tank, and a submersible pump is installed at the end, away from the precipitant adding pipe, of the liquid guide pipe. A plurality of spray heads are distributed at the bottom end of the precipitant adding pipe at equal intervals, precipitants are sprayed into the settling pond, the uniformity of adding the precipitants is improved, the horizontal driving mechanism drives the precipitant adding pipe to horizontally move, and the precipitants are further ensured to be more uniformly distributed in the settling pond.

Description

Technical Field

[0001] The utility model relates to the technical field of potassium nitrate production, in particular to a sedimentation tank for treating wastewater from potassium nitrate production. Background Art

[0002] In modern industrial production, potassium nitrate, as an important chemical raw material, is widely used in various fields. As the scale of potassium nitrate production continues to expand, the problem of wastewater treatment generated during its production process has become increasingly prominent.

[0003] Currently, during the production of potassium nitrate, wastewater typically contains large amounts of potassium nitrate ions and other impurities. Directly discharging this wastewater without effective treatment not only causes serious environmental pollution but also wastes large amounts of water resources. Existing wastewater treatment plants have several drawbacks when treating wastewater from potassium nitrate production.

[0004] The precipitant in the treatment device of the prior art is unevenly distributed, resulting in that the potassium nitrate ions in the wastewater cannot fully react with the precipitant, affecting the precipitation effect, thereby reducing the efficiency and quality of wastewater treatment.

[0005] In order to solve the above problems, the utility model provides a sedimentation tank for treating potassium nitrate production wastewater, aiming to overcome the shortcomings of the existing technology, improve the effect and efficiency of wastewater treatment, realize the recycling of water resources, and reduce pollution to the environment. Utility Model Content

[0006] In order to solve the problems mentioned in the above background technology, the utility model provides a sedimentation tank for treating potassium nitrate production wastewater.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A sedimentation tank for treating potassium nitrate production wastewater comprises a sedimentation tank, a liquid inlet pipe and a liquid outlet pipe are respectively provided on both sides of the sedimentation tank, a bracket is provided at the top of the sedimentation tank, and a horizontal drive mechanism is installed on the bracket;

[0009] The output end of the horizontal driving mechanism is connected to a horizontally arranged precipitant addition pipe, and a plurality of nozzles are installed at the bottom end of the precipitant addition pipe, and the nozzles are evenly distributed at the bottom end of the precipitant addition pipe;

[0010] One end of the precipitant addition pipe is connected to a liquid introduction pipe, a precipitant storage tank is placed on one side of the sedimentation tank, and a submersible pump is installed on the end of the liquid introduction pipe away from the precipitant addition pipe.

[0011] Preferably, a guide bracket is fixed on the submersible pump, a horizontally arranged guide rail is fixed on the inner wall of the precipitant storage tank, and the guide bracket is slidably mounted on the guide rail.

[0012] Preferably, the horizontal driving mechanism includes a threaded rod rotatably mounted on a bracket, the threaded rod is driven by a first rotary motor, guide rods are fixed on both sides of the bracket on the threaded rod, a threaded sleeve is mounted on the outside of the threaded rod, guide sleeves are fixed on both sides of the threaded sleeve, the two guide sleeves are respectively mounted on the outside of the two guide rods, and the bottom end of the threaded sleeve is fixed to the precipitant addition tube.

[0013] Preferably, a rotating shaft is installed inside the precipitant addition tube, and a plurality of sealing plates are fixed outside the rotating shaft. The sealing plates correspond to the positions of the nozzles one by one, and the sealing plates are staggered up and down outside the rotating shaft.

[0014] Preferably, one end of the rotating shaft extends to the outside of the precipitant addition tube and is fixed with a first spur gear, and a horizontally arranged first rack is fixed on the bracket, and the first spur gear is meshed with the first rack.

[0015] Preferably, a mounting bar is fixed to one side of the precipitant addition tube, and a plurality of agitators are rotatably mounted on the mounting bar. A stirring branch is provided at the bottom end of the agitator, and a first bevel gear is fixed to the top of the agitator. A transmission shaft is rotatably mounted on the top of the mounting bar, and a plurality of second bevel gears are fixed to the outside of the transmission shaft. The first bevel gear is meshed with the second bevel gear in a one-to-one correspondence. A second spur gear is fixed to one end of the transmission shaft, and a horizontally arranged second rack is fixed to the inner wall of the sedimentation tank, and the second spur gear is meshed with the second rack.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] Multiple nozzles are evenly distributed at the bottom of the precipitant addition pipe to spray the precipitant into the sedimentation tank, which improves the uniformity of precipitant addition. The horizontal drive mechanism drives the precipitant addition pipe to move horizontally, further ensuring that the precipitant is more evenly distributed in the sedimentation tank.

[0018] The rotating shaft inside the precipitant addition tube and the sealing plates distributed staggered outside, when the precipitant addition tube moves horizontally, the first spur gear and the first rack engage to drive the rotating shaft to rotate, and the sealing plates intermittently block the nozzles so that adjacent nozzles are not opened at the same time, thereby increasing the pressure when the precipitant is sprayed, enhancing the pre-mixing effect, and also improving the uniformity of spraying the precipitant.

[0019] When the precipitant addition pipe moves horizontally, the second spur gear moves along the second rack, thereby driving the transmission shaft to rotate. The engagement of the second bevel gear and the first bevel gear can drive the agitator to stir the wastewater, thereby improving the dispersion of the precipitant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a first-perspective stereogram of the present invention;

[0022] Figure 2 This is a second perspective stereogram of the present invention;

[0023] Figure 3 This is the main view of the utility model;

[0024] Figure 4 This is a schematic diagram of the baffles of the utility model rotated to a horizontal state and combined with each other to form an overall state;

[0025] Figure 5 This is a schematic diagram of the baffles of the present invention rotated to a vertical state and separated from each other;

[0026] Figure 6 This is a schematic diagram of the connection relationship between the first hydraulic pipeline and the second hydraulic pipeline and the horizontal axis of the utility model;

[0027] Figure 7 This is a schematic diagram of the connection relationship between the magnet B and the horizontal axis of the present invention;

[0028] Figure 8 This is an enlarged detail view of the precipitant addition tube of the utility model from the first perspective;

[0029] Figure 9 This is an enlarged detail view of the precipitant addition tube of the utility model from a second perspective;

[0030] Figure 10 This is a schematic diagram of the internal structure of the precipitant adding tube of the utility model;

[0031] Figure 11 This is a schematic diagram of the position structure of the liquid guide tube of the present utility model;

[0032] Figure 12 for Figure 11 A magnified detail of position A in the middle;

[0033] In the figure: 1 sedimentation tank, 101 liquid inlet pipe, 102 liquid outlet pipe, 2 bracket, 201 threaded rod, 202 guide rod, 203 first rotary motor, 204 threaded sleeve, 205 guide sleeve, 3 precipitant addition pipe, 301 nozzle, 302 liquid guide pipe, 303 submersible pump, 304 precipitant storage tank, 305 guide rail, 306 guide bracket, 307 rotating shaft, 308 blocking plate, 309 second spur gear, 310 second rack, 4 mounting bar, 401 agitator, 402 agitating branch, 403 first bevel gear, 404 transmission shaft, 405 second bevel gear, 406 first spur gear, 407 first rack, 5 horizontal shaft, 501 baffle, 502 filter, 503 third spur gear, 504 second rotating motor, 505 fourth spur gear, 6 first hydraulic pipeline, 601 second hydraulic pipeline, 602 rotary joint, 7 magnet B, 701 cleaning scraper, 702 limit rod, 703 groove. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0035] Reference Figure 1-12 A sedimentation tank for treating potassium nitrate production wastewater comprises a sedimentation tank 1, a liquid inlet pipe 101 and a liquid outlet pipe 102 are respectively provided on both sides of the sedimentation tank 1, a bracket 2 is provided at the top of the sedimentation tank 1, and a horizontal drive mechanism is installed on the bracket 2;

[0036] The output end of the horizontal driving mechanism is connected to a horizontally arranged precipitant addition pipe 3, and a plurality of nozzles 301 are installed at the bottom end of the precipitant addition pipe 3. The nozzles 301 are evenly distributed at the bottom end of the precipitant addition pipe 3;

[0037] The nozzle 301 is used to spray the precipitant into the sedimentation tank 1. Multiple nozzles 301 can improve the uniformity of precipitant addition. The horizontal driving mechanism can drive the precipitant addition pipe 3 to move horizontally as a whole, further improving the uniformity of precipitant addition.

[0038] The sedimentation tank 1 is internally rotatably mounted with multiple horizontal shafts 5, with baffles 501 fixed on both sides of the horizontal shaft 5. Filter screens 502 are mounted on the baffles 501. When the horizontal shaft 5 is rotated until the baffles 501 are in a horizontal position, the multiple baffles 501 are spliced ​​together to form a whole.

[0039] After the precipitant is added, the potassium nitrate ions in the wastewater react with the precipitant to form an insoluble precipitate, which is then allowed to settle. At this time, the horizontal axis 5 rotates until the baffle 501 is in a vertical state (such as Figure 5 As shown), the sediment can fall to the bottom of the sedimentation tank 1 through the gap between the baffles 501. When the supernatant needs to be discharged, the horizontal axis 5 is rotated until the baffle 501 is in a horizontal position. The sediment will be blocked by the filter screen 502, and the horizontal height of the liquid outlet pipe 102 is less than the horizontal height of the horizontal axis 5. At this time, the valve of the liquid outlet pipe 102 is opened to discharge the supernatant, so that the treated water can be recycled, which saves water resources and makes solid-liquid separation more convenient. Example 2

[0040] Referring to 1-12, the difference between this embodiment and embodiment 1 is that one end of the precipitant addition pipe 3 is connected to a liquid diversion pipe 302, a precipitant storage tank 304 is placed on one side of the sedimentation tank 1, and a submersible pump 303 is installed on the end of the liquid diversion pipe 302 away from the precipitant addition pipe 3;

[0041] The precipitant is placed in the precipitant storage tank 304, pumped out by the submersible pump 303, and sprayed into the wastewater through the nozzle 301, so as to achieve the purpose of pre-mixing.

[0042] The submersible pump 303 is fixed with a guide bracket 306, and the inner wall of the precipitant storage tank 304 is fixed with a horizontal guide rail 305, on which the guide bracket 306 is slidably mounted.

[0043] It can ensure the stable movement of the submersible pump 303 and facilitate maintenance. Example 3

[0044] Referring to 1-12, the difference between this embodiment and embodiment 1 is that the horizontal drive mechanism includes a threaded rod 201 rotatably mounted on a bracket 2, the threaded rod 201 being driven by a first rotary motor 203, guide rods 202 being fixed to both sides of the threaded rod 201 on the bracket 2, a threaded sleeve 204 being mounted on the outside of the threaded rod 201, and guide sleeves 205 being fixed on both sides of the threaded sleeve 204, the two guide sleeves 205 being mounted on the outside of the two guide rods 202, respectively, and the bottom ends of the threaded sleeves 204 being fixed to the precipitant addition tube 3;

[0045] When the first rotary motor 203 is turned on to drive the threaded rod 201 to rotate, the threaded sleeve 204 can be driven to move horizontally, thereby achieving the purpose of driving the precipitant addition tube 3 to move horizontally. Example 4

[0046] Referring to 1-12, the difference between this embodiment and Example 3 is that a rotating shaft 307 is installed inside the precipitant addition tube 3, and a plurality of blocking plates 308 are fixed to the outside of the rotating shaft 307. The blocking plates 308 correspond to the positions of the nozzles 301 one by one, and the blocking plates 308 are staggered up and down on the outside of the rotating shaft 307. One end of the rotating shaft 307 extends to the outside of the precipitant addition tube 3 and is fixed with a first straight gear 406. A horizontally arranged first rack 407 is fixed on the bracket 2. The first straight gear 406 is engaged with the first rack 407. When the precipitant addition tube 3 moves horizontally, the first straight gear 406 moves along the first rack 407, thereby driving the rotating shaft 307 to rotate relative to the precipitant addition tube 3. During the rotation, the blocking plates 308 will intermittently block the nozzles 301, so that adjacent nozzles 301 are not opened at the same time. Fewer nozzles 301 can increase the pressure when the precipitant is sprayed, improve the premixing effect, and also improve the uniformity of spraying the precipitant. Example 5

[0047] Referring to 1-12, the difference between this embodiment and embodiment 3 is that a mounting bar 4 is fixed to one side of the precipitant addition tube 3, and a plurality of agitators 401 are rotatably mounted on the mounting bar 4. The bottom end of the agitator 401 is provided with a stirring branch 402, and a first bevel gear 403 is fixed to the top of the agitator 401. A transmission shaft 404 is rotatably mounted on the top of the mounting bar 4, and a plurality of second bevel gears 405 are fixed to the outside of the transmission shaft 404. The first bevel gear 403 is meshed with the second bevel gear 405 in a one-to-one correspondence. A second spur gear 309 is fixed to one end of the transmission shaft 404, and a horizontally arranged second rack 310 is fixed to the inner wall of the sedimentation tank 1, and the second spur gear 309 is meshed with the second rack 310;

[0048] When the precipitant addition pipe 3 moves horizontally, the second spur gear 309 moves along the second rack 310, thereby driving the transmission shaft 404 to rotate. The second bevel gear 405 meshes with the first bevel gear 403 to drive the agitator 401 to stir the wastewater, thereby improving the dispersion of the precipitant.

[0049] Both ends of the horizontal axis 5 extend to the outside of the sedimentation tank 1, and a third spur gear 503 is fixed to the outside of one end of the horizontal axis 5. The multiple third spur gears 503 are meshed with each other in sequence. A second rotating motor 504 is fixed to the outer wall of the sedimentation tank 1. The output shaft of the second rotating motor 504 is fixed to a fourth spur gear 505. The fourth spur gear 505 is meshed with one of the third spur gears 503.

[0050] In order to drive the synchronous rotation of each horizontal shaft 5 to switch the filtering and non-filtering states, when the second rotating motor 504 is turned on, one of the horizontal shafts 5 can be driven to rotate through the engagement of the fourth spur gear 505 with one of the third spur gears 503, and then the remaining horizontal shafts 5 are driven to rotate synchronously through the mutual engagement of multiple third spur gears 503 in sequence, and the directions of rotation of adjacent horizontal shafts 5 are opposite. Example 6

[0051] Referring to 1-12, the difference between this embodiment and embodiment 5 is that a first hydraulic pipeline 6 and a second hydraulic pipeline 601 are respectively fixed on both sides of the sedimentation tank 1, the interior of the horizontal axis 5 is hollow, and the two ends of the horizontal axis 5 are respectively connected to the first hydraulic pipeline 6 and the second hydraulic pipeline 601 through a rotary joint 602, a hydraulic piston is installed inside the horizontal axis 5, a magnet A is installed on the outside of the hydraulic piston, a magnet B7 is movably installed on the outside of the horizontal axis 5, a cleaning scraper 701 is fixed on the magnet B7, and the magnet A and the magnet B7 attract each other;

[0052] Hydraulic oil can be transported from both ends to the inside of the horizontal axis 5 through the first hydraulic pipeline 6 and the second hydraulic pipeline 601 respectively. The oil pressure can push the hydraulic piston to move horizontally inside the horizontal axis 5, and then the mutual attraction between magnet A and magnet B7 can drive magnet B7 to move horizontally along the axial direction of the horizontal axis 5, and then drive the cleaning scraper 701 to move along the axial direction of the horizontal axis 5 to actively clean the filter 502.

[0053] The magnet B7 has an arc-shaped structure, and the curvature of the magnet B7 matches the surface of the horizontal axis 5. A limit rod 702 is fixed on the horizontal axis 5. The limit rod 702 is clamped on the side of the magnet B7 away from the horizontal axis 5. A groove 703 is formed on the side of the magnet B7 away from the horizontal axis 5, and the limit rod 702 is located in the groove 703.

[0054] This ensures the stable movement of the magnet B on the horizontal axis 5 while preventing it from falling off.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0056] In this utility model, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to mechanical connection, direct connection, or indirect connection through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0057] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0058] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sedimentation tank for treating potassium nitrate production wastewater, characterized in that: It comprises a sedimentation tank (1), wherein a liquid inlet pipe (101) and a liquid outlet pipe (102) are respectively provided on both sides of the sedimentation tank (1), a bracket (2) is provided at the top of the sedimentation tank (1), and a horizontal driving mechanism is installed on the bracket (2); The output end of the horizontal driving mechanism is connected to a horizontally arranged precipitant addition pipe (3), and a plurality of nozzles (301) are installed at the bottom end of the precipitant addition pipe (3), and the nozzles (301) are evenly distributed at the bottom end of the precipitant addition pipe (3); One end of the precipitant addition pipe (3) is connected to a liquid diversion pipe (302), a precipitant storage tank (304) is placed on one side of the sedimentation tank (1), and a submersible pump (303) is installed at one end of the liquid diversion pipe (302) away from the precipitant addition pipe (3).

2. A potassium nitrate production wastewater treatment sedimentation tank according to claim 1, characterized in that: A guide bracket (306) is fixed on the submersible pump (303), a horizontally arranged guide rail (305) is fixed on the inner wall of the precipitant storage tank (304), and the guide bracket (306) is slidably mounted on the guide rail (305).

3. A potassium nitrate production wastewater treatment sedimentation tank according to claim 1, characterized in that: The horizontal driving mechanism comprises a threaded rod (201) rotatably mounted on a bracket (2), the threaded rod (201) being driven by a first rotating motor (203), guide rods (202) being fixed on both sides of the threaded rod (201) on the bracket (2), a threaded sleeve (204) being mounted on the outside of the threaded rod (201), guide sleeves (205) being fixed on both sides of the threaded sleeve (204), the two guide sleeves (205) being mounted on the outside of the two guide rods (202), and the bottom ends of the threaded sleeves (204) being fixed to the precipitant addition tube (3).

4. A potassium nitrate production wastewater treatment sedimentation tank according to claim 3, characterized in that: A rotating shaft (307) is installed inside the precipitant addition tube (3), and a plurality of blocking plates (308) are fixed outside the rotating shaft (307). The blocking plates (308) correspond to the positions of the nozzles (301) one by one, and the blocking plates (308) are staggeredly distributed up and down outside the rotating shaft (307).

5. A potassium nitrate production wastewater treatment sedimentation tank according to claim 4, characterized in that: One end of the rotating shaft (307) extends to the outside of the precipitant addition tube (3) and is fixed with a first spur gear (406). A horizontally arranged first rack (407) is fixed on the bracket (2), and the first spur gear (406) is meshed with the first rack (407).

6. A potassium nitrate production wastewater treatment sedimentation tank according to claim 3, characterized in that: A mounting bar (4) is fixed on one side of the precipitant addition tube (3), and a plurality of stirrers (401) are rotatably mounted on the mounting bar (4), a stirring branch (402) is provided at the bottom end of the stirrer (401), a first bevel gear (403) is fixed on the top end of the stirrer (401), a transmission shaft (404) is rotatably mounted on the top end of the mounting bar (4), a plurality of second bevel gears (405) are fixed on the outside of the transmission shaft (404), the first bevel gear (403) and the second bevel gear (405) are meshed in a one-to-one correspondence, a second spur gear (309) is fixed on one end of the transmission shaft (404), a second rack (310) arranged horizontally is fixed on the inner wall of the sedimentation tank (1), and the second spur gear (309) is meshed with the second rack (310).

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