Chlorate-salt separation equipment and separation method

Abstract

The invention discloses a chlorate-salt water separation device and a separation method, which relate to the technical field of chlorate-salt water separation. The device comprises a pretreatment unit, an electrodialysis unit, and an evaporation separation unit; the evaporation separation unit is provided with a circulation pump; the electrodialysis unit is provided with a plurality of electrodialysis membrane stacks and a plurality of cleaning mechanisms; a first drive structure, a bidirectional screw device, and a cleaning box cooperate to control a cleaning seat to move back and forth; a conveyor belt structure, a cleaning belt, a first auxiliary roller, and a second auxiliary roller cooperate to enable a cleaning bar to clean the electrodialysis membrane stack; a gravity bar, a return spring, and a rotating member cooperate to adjust the direction of the cleaning bar, thereby improving the cleaning effect of the cleaning mechanism, eliminating the need to stop the electrodialysis unit to disassemble and clean the electrodialysis membrane stack, thereby improving the separation efficiency of the chlorate-salt water and reducing the labor intensity of workers.

Description

Technical Field

[0001] The invention belongs to the technical field of chlorate-salt water separation, and in particular relates to chlorate-salt water separation equipment and a separation method. Background Art

[0002] Chlorate is a salt containing chlorate ions, including potassium chlorate, sodium chlorate, magnesium chlorate, etc. The chlorates of alkali metals and alkaline earth metals are colorless crystals with strong oxidizing effects. They release oxygen and heat when heated. When mixed with flammable materials such as sulfur, carbon, and phosphorus, violent explosions will occur when they collide. They cannot be stacked together with reducing agents or flammable materials. They are generally soluble in water, and potassium chlorate has a low solubility. Chlorate is mainly used in industrial production. Chlorate brine refers to a brine solution containing chlorate (such as potassium chlorate, sodium chlorate, etc.). This type of solution is widely used in industrial production, for example in the fields of chemical industry, pharmaceuticals, water treatment, etc. Chlorate brine separation equipment is required when separating chlorate brine.

[0003] The existing chlorate-salt water separation equipment has certain disadvantages when used. The existing chlorate-salt water separation equipment usually separates by electrodialysis separation or evaporation crystallization. During electrodialysis separation, the electrodialysis unit needs to be stopped at regular intervals and the electrodialysis membrane stack needs to be disassembled to clean and maintain the electrodialysis membrane stack. Impurities adhering to the electrodialysis membrane stack need to be cleaned to avoid scaling of the electrodialysis membrane stack and reduce the separation efficiency of the electrodialysis unit. However, stopping the electrodialysis unit and disassembling the electrodialysis membrane stack for maintenance increases the labor intensity of the staff and reduces the separation efficiency of the chlorate-salt water separation equipment, which cannot meet people's needs. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art; to this end, the present invention provides a chlorate brine separation device and a separation method.

[0005] A chlorate-salt water separation device and method comprises: a pretreatment unit for performing preliminary separation on the chlorate-salt water; an electrodialysis unit connected to the pretreatment unit and performing electrodialysis separation on the chlorate-salt water; and an evaporation separation unit for performing evaporation and concentration separation on the chlorate-salt water after the electrodialysis separation. The evaporation separation unit is provided with a circulation pump for introducing the evaporated and concentrated chlorate-salt water into the electrodialysis unit. The electrodialysis unit is provided with several groups of electrodialysis membrane stacks and several groups of cleaning mechanisms for cleaning the electrodialysis membrane stacks. The pretreatment unit includes a filter for removing solid impurities and suspended matter from the brine and a regulating tank for adjusting the pH value and temperature of the brine to ensure stability of subsequent treatment. The pretreatment unit is provided with a first conveying device for conveying the treated brine to the electrodialysis unit. The electrodialysis unit includes several groups of electrodes for use with the electrodialysis membrane stacks. The electrodialysis unit is provided with a second conveying device connected to the evaporation separation unit. The electrodialysis unit is provided with a maintenance port.

[0006] As a further solution of the present invention: the cleaning mechanism includes a cleaning box movably arranged above the electrodialysis membrane stack, a bidirectional screw device installed above the electrodialysis membrane stack and controlling the horizontal reciprocating movement of the cleaning box, and a cleaning seat symmetrically and detachably installed on the lower end surface of the cleaning box and close to the outer surface of the electrodialysis membrane stack, and the electrodialysis unit is provided with a first driving structure that controls the bidirectional screw device to work; the cleaning mechanism also includes a conveyor belt structure rotatably installed on the inner side of the cleaning seat, a cleaning belt detachably installed on the outer surface of the conveyor belt structure and several groups of cleaning strips detachably installed on the cleaning belt and cleaning impurities adhered to the outer surface of the electrodialysis membrane stack, the lower end surface of the cleaning box is provided with a through groove for moving the conveyor belt structure, and the outer surface of the conveyor belt structure is provided with a fixing groove for fixing the cleaning belt; the cleaning strip is provided with a cleaning groove for cleaning impurities.

[0007] As a further solution of the present invention: the vertical cross-sections of the conveyor belt structure and the cleaning belt are both "7"-shaped ring structures; several groups of first auxiliary rollers for assisting the conveyor belt structure and second auxiliary rollers arranged on the outside of the cleaning belt for assisting the conveyor belt structure are rotatably installed inside the cleaning box, the first auxiliary rollers are arranged on the inner side of the conveyor belt structure and assist the conveyor belt structure in moving; the second auxiliary roller is provided with a groove matching the cleaning belt, the groove prevents the second auxiliary roller from contacting the cleaning strip on the cleaning belt; several groups of adjustment components are arranged on the cleaning belt to adjust the angle of the cleaning strip.

[0008] As a further solution of the present invention: the adjustment assembly includes a rotating member that is detachably mounted on a side of the cleaning strip and rotatably connected to the cleaning strip, several groups of return springs that are detachably mounted on the rotating member, and a gravity bar that is arranged at an end of the return spring away from the rotating member and squeezes and stretches the rotating member. When the several groups of cleaning strips on the side of the cleaning strip close to the electrodialysis membrane stack are acted upon by the gravity bar, the return spring is in a stretched state, thereby driving the rotating member to control the cleaning strip to deflect upward, so that the angle between the cleaning strip and the cleaning strip is acute, thereby cleaning the electrodialysis membrane stack. The gravity bar on the cleaning strip close to the inner top surface of the cleaning box squeezes the return spring under the action of gravity, thereby causing the rotating member to control the cleaning strip to rotate, so that the angle between the cleaning strip and the cleaning strip is obtuse, which can facilitate the falling of impurities on the cleaning strip onto the cleaning strip. The outer surface of the cleaning strip is provided with an adjustment groove for installing the adjustment assembly. The cleaning strip is provided with a sealing strip that is elastically connected to the cleaning strip and seals the adjustment groove. The sealing strip is arranged in a retractable state and seals the cleaning strip to the cleaning strip.

[0009] As a further solution of the present invention: the cleaning box is provided with a cleaning component for cleaning the cleaning belt and the cleaning strip; the inner bottom surface of the cleaning box is provided with a collection box that cooperates with the cleaning component and is used to collect impurities cleaned by the cleaning component; one side of the collection box is provided with a connecting plate that fits with the outer surface of the cleaning box; the cleaning box is provided with a limiting component for limiting the connecting plate.

[0010] As a further solution of the present invention: the cleaning component includes an eccentric roller rotatably installed under the cleaning belt and vibratingly cleaning the cleaning belt and the cleaning strip, several groups of cleaning brushes detachably installed on the outer surface of the eccentric roller in a circular array, and a second driving structure detachably installed on the outer surface of the cleaning box and controlling the rotation of the eccentric roller, the second driving structure cleans the cleaning belt and the cleaning belt by controlling the eccentric roller and the cleaning brush; the cleaning component also includes an elliptical roller rotatably installed on the inner side of the conveyor belt structure and an arc-shaped convex strip symmetrically installed on the long end portion of the elliptical roller and vibratingly cleaning the cleaning belt, the elliptical roller and the arc-shaped convex strip cooperate to vibrate and knock the cleaning belt below, thereby cleaning impurities on the cleaning belt and the cleaning strip; wherein, a baffle for blocking the cleaning brush from shaking off impurities is detachably installed inside the cleaning box; the elliptical roller is provided with a first transmission belt structure that is transmission-connected to the conveyor belt structure, and the conveyor belt structure controls the rotation of the elliptical roller through the first transmission belt structure.

[0011] As a further solution of the present invention: the limit assembly includes a limit tube detachably mounted on one side of the upper end surface of the cleaning box, a limit rod movably arranged in the limit tube and with the bottom end extending into the interior of the cleaning box, a limit block vertically mounted at the bottom of the limit rod and a connecting block detachably mounted on the top of the limit rod; wherein, the limit rod is an "L"-shaped structure; an annular stopper is provided on the limit rod; a limit spring connected to the annular stopper is provided in the limit tube; a limit plate is provided on the upper part of the inner side surface of the connecting plate, which is plugged into the limit block, and a limit groove is provided on the lower end surface of the limit plate which is connected to the limit block; a trapezoidal stopper is provided on the inner wall of the electrodialysis unit for squeezing the connecting block; when the bidirectional screw device controls the cleaning box to clean and reset the electrodialysis membrane stack, the upper end surface of the connecting block contacts the lower end surface of the trapezoidal stopper to control the limit rod to move downward and separate the limit block from the limit plate.

[0012] As a further solution of the present invention: the electrodialysis unit is provided with a discharge pipe that can be extended into the bottom inner side of the collecting box, a discharge pump connected to the discharge pipe and a discharge assembly for discharging impurities collected in the collecting box, and the discharge pipe is configured to be retractable at one end close to the discharge pump so as to be able to move up and down in coordination with the discharge pipe; wherein, a vibration structure for cleaning blockages in the discharge pipe is provided inside the electrodialysis unit; the discharge pipe is configured to be a square tube structure, the interior of the discharge pipe is configured to be a circular hole structure, and the inner wall of the discharge pipe is configured to be provided with an anti-sticking layer; the vibration structure includes several groups of semicircular convex strips symmetrically installed on both sides of the outer surface of the discharge pipe and several groups of knocking strips equidistantly arranged on the inner wall of the supporting square tube and capable of knocking the discharge pipe; the vertical cross-section of the knocking strip is a semicircular structure; several groups of vibrating tubes are vertically installed on the knocking strip near one side of the supporting square tube; a vibration rod coaxially connected to the vibration tube and a vibration spring sleeved on the vibration rod and connecting the vibration tube to the supporting square tube are vertically installed on the inner wall of the supporting square tube.

[0013] As a further solution of the present invention: the discharge assembly includes a first rack provided on a side of the connecting plate and controlling the connecting plate to move horizontally back and forth, a mounting block for mounting the first rack to the connecting plate, a first gear meshing with the first rack, and a drive motor for controlling the first gear to rotate;

[0014] The discharge assembly also includes a supporting square tube sleeved on the outside of the discharge pipe, a second gear rotatably arranged on the inner wall of the supporting square tube, and a second rack arranged on the outer wall of the discharge pipe and meshing with the second gear; wherein, a transmission rod coaxially connected to the second gear is rotatably installed on the outer wall of the supporting square tube; a second transmission belt structure transmission-connected to the transmission rod is provided at one end of the first gear away from the driving motor; a guide seat is symmetrically provided on the inner wall of the supporting square tube away from the second gear; a guide bar slidably connected to the guide seat is symmetrically provided on the outer wall of the discharge pipe; a guide groove for moving the guide bar is provided on the guide seat, and the guide seat and the guide bar cooperate to enable the discharge pipe to move stably; the diameter of the first gear is larger than the diameter of the second gear; the diameter of the transmission end of the second transmission belt structure connected to the first gear is larger than the diameter of the transmission end of the second transmission belt structure connected to the second gear; when the driving motor controls the first gear to rotate counterclockwise, the first rack controls the collection box to move outward through the connecting plate, and the first gear drives the second gear to rotate through the second transmission belt structure to control the second rack to move downward and allow the discharge pipe to be inserted into the inner bottom of the collection box.

[0015] As a further solution of the present invention: a method for separating chlorate brine, the specific steps are as follows:

[0016] Step A: The pretreatment unit removes suspended matter and large particle impurities from the chlorate brine, and introduces the treated chlorate brine into an electrodialysis unit for electrodialysis separation of chlorate and brine, and then evaporation and concentration are performed in an evaporation separation unit;

[0017] Step B: cleaning impurities from the electrodialysis membrane stack by controlling the cleaning seat, cleaning belt and cleaning strips through the bidirectional screw device in the electrodialysis unit;

[0018] Step C: Cleaning the cleaning belt and the cleaning strip by the eccentric roller and the cleaning brush in the cleaning box, and vibrating and cleaning the cleaning belt and the cleaning strip by the second driving structure, the elliptical roller and the arc-surface convex strip;

[0019] Step D: releasing the limit of the connecting plate through the limit assembly, starting the drive motor to open the collection box and inserting the discharge pipe into the collection box, and the discharge pump discharges the impurities collected in the collection box.

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

[0021] (1) The present invention provides a cleaning mechanism, a first driving structure, a bidirectional screw device and a cleaning box to cooperate with each other to control the reciprocating movement of the cleaning seat, and a conveyor belt structure, a cleaning belt, a first auxiliary roller and a second auxiliary roller to cooperate with each other to enable the cleaning bar to clean the electrodialysis membrane stack. The gravity bar, the return spring and the rotating part cooperate to adjust the direction of the cleaning bar, thereby improving the cleaning effect of the cleaning mechanism. There is no need to stop the electrodialysis unit to disassemble and clean the electrodialysis membrane stack, thereby improving the separation efficiency of chlorate and brine and reducing the labor intensity of the staff.

[0022] (2) The present invention provides a cleaning mechanism, a gravity bar, a return spring and a rotating member to adjust the angle of the cleaning bar. The second driving structure, the eccentric roller and the cleaning brush cooperate to clean the cleaning belt and the cleaning bar. The conveyor belt structure, the first transmission belt structure, the elliptical roller and the arc-surface convex strip cooperate to clean the impurities on the cleaning belt and the cleaning bar into the collection box, thereby eliminating the need for the staff to stop the electrodialysis unit to clean the cleaning belt and the cleaning bar, reducing the labor intensity of the staff, improving the cleaning efficiency of the cleaning assembly, and improving the separation efficiency of chlorate brine.

[0023] (3) The present invention sets a limit assembly and a discharge assembly, and the cleaning box, the limit rod, the connecting block, the trapezoidal stopper and the limit spring cooperate to separate the limit block from the limit plate, thereby releasing the limit on the connecting plate. The driving motor, the first gear and the first rack cooperate to control the collection box to move outward through the connecting plate. The first gear, the second transmission belt structure, the transmission rod, the second gear and the second rack insert the lower end of the discharge pipe into the inner bottom of the collection box. The guide bar and the guide seat improve the stability of the discharge pipe when it moves. The discharge pump and the discharge pipe cooperate to discharge the impurities collected in the collection box, so that there is no need to stop the electrodialysis unit to discharge the collection box, thereby improving the separation efficiency of chlorate brine. When the discharge assembly is reset, the semicircular convex strip, the knocking strip, the vibration tube, the vibration rod and the vibration spring cooperate to knock the discharge pipe to introduce the impurities adhered to the inner wall of the discharge pipe into the collection box, thereby avoiding the impurities adhering to the discharge pipe and possibly causing the discharge pipe to be blocked, thereby reducing the number of times the discharge pipe is maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a structural diagram of the separation equipment in the present invention.

[0026] Figure 3 It is a partial structural diagram of the electrodialysis unit and cleaning mechanism in the present invention.

[0027] Figure 4 It is a partial structural diagram of the electrodialysis membrane stack and cleaning mechanism in the present invention.

[0028] Figure 5 It is a partial structural diagram of the cleaning seat and conveyor belt structure in the present invention.

[0029] Figure 6 It is a partial structural diagram of the conveyor belt structure and the second auxiliary roller in the present invention.

[0030] Figure 7 It is a partial structural diagram of the cleaning strip in the present invention.

[0031] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0032] Figure 9 It is a partial structural diagram of the cleaning mechanism in the present invention.

[0033] Figure 10 It is a partial structural diagram of the cleaning box and discharge assembly in the present invention.

[0034] Figure 11 It is a partial structural diagram of the limiting component in the present invention.

[0035] Figure 12 It is a partial structural diagram of the vibration structure and discharge pipe in the present invention.

[0036] Figure 13 It is a partial structural diagram of the supporting square tube in the present invention.

[0037] Figure 14 Flow chart of the separation method of the present invention.

[0038] In the figure: 1. pretreatment unit; 2. electrodialysis unit; 3. evaporation separation unit; 4. circulation pump; 5. electrodialysis membrane stack; 6. cleaning box; 7. bidirectional screw device; 8. cleaning seat; 9. conveyor belt structure; 10. cleaning belt; 11. cleaning strip; 12. cleaning groove; 13. first auxiliary roller; 14. second auxiliary roller; 15. rotating member; 16. return spring; 17. gravity strip; 18. collecting box; 19. connecting plate; 20. eccentric roller; 21. cleaning brush; 22. second driving structure; 23. elliptical roller; 24. arc-surface convex strip; 25. baffle; 26. first transmission belt structure; 27. limit tube; 28. limit rod; 29. limit block; 30. annular block; 31. Limit spring; 32. Limit plate; 33. Trapezoidal stopper; 34. Discharge pipe; 35. Discharge pump; 36. Vibration structure; 37. First rack; 38. Mounting block; 39. First gear; 40. Drive motor; 41. Support square tube; 42. Second gear; 43. Second rack; 44. Transmission rod; 45. Second transmission belt structure; 46. First conveying device; 47. Electrode; 48. Second conveying device; 49. First drive structure; 50. Semicircular convex strip; 51. Knocking strip; 52. Vibration pipe; 53. Vibration rod; 54. Vibration spring; 55. Guide seat; 56. Guide strip; 57. Water tank; 58. Mounting seat; 59. Support seat; 60. Connecting block. DETAILED DESCRIPTION

[0039] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all 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.

[0040] Example 1

[0041] See also Figure 1 - Figure 3The present application provides a chlorate brine separation device and separation method, comprising: a pretreatment unit 1 for performing preliminary separation on the chlorate brine, an electrodialysis unit 2 connected to the pretreatment unit 1 and performing electrodialysis separation on the chlorate brine, and an evaporation separation unit 3 for performing evaporation and concentration separation on the chlorate brine after the electrodialysis separation; wherein the evaporation separation unit 3 is provided with a circulation pump 4 for introducing the evaporated and concentrated chlorate brine into the electrodialysis unit 2; the electrodialysis unit 2 is provided with a plurality of groups of electrodialysis membrane stacks 5 and a plurality of cleaning mechanisms for cleaning the electrodialysis membrane stacks 5; the pretreatment unit 1 includes a filter for removing the brine from the brine. A filter for solid impurities and suspended matter and a regulating tank for adjusting the pH value and temperature of the brine to ensure the stability of subsequent treatment, the pretreatment unit 1 is provided with a first conveying device 46 for conveying the treated brine to the electrodialysis unit 2; the electrodialysis unit 2 includes several groups of electrodes 47 used in conjunction with the electrodialysis membrane stack 5, the electrodialysis unit 2 is provided with a second conveying device 48 connected to the evaporation separation unit 3, and the electrodialysis unit 2 is provided with a maintenance port; a water tank 57 for collecting water produced by evaporation and separation is provided on one side of the evaporation and separation unit 3; and a mounting base 58 for mounting the electrodialysis membrane stack 5 is provided in the electrodialysis unit 2.

[0042] In summary, the chlorate brine to be treated is introduced into the pretreatment unit 1, the chlorate brine is pretreated by the filter and the regulating tank, and the pretreated chlorate brine is introduced into the electrodialysis unit 2 via the first conveying device 46. The chlorate brine is separated by the electrodialysis membrane stack 5 and the electrode 47. The concentrated chlorate brine after separation is introduced into the evaporation separation unit 3 for evaporation separation. The evaporated and concentrated chlorate brine is then introduced into the electrodialysis unit 2 for further separation via the circulation pump 4. The separated chlorate brine is introduced into the evaporation separation unit 3 via the second conveying device 48 for evaporation and crystallization.

[0043] Example 2

[0044] Reference Figure 3 - Figure 8, which is the second embodiment of the present invention, wherein the cleaning mechanism of the present invention includes a cleaning box 6 movably arranged above the electrodialysis membrane stack 5, a bidirectional screw device 7 installed above the electrodialysis membrane stack 5 and controlling the cleaning box 6 to move horizontally back and forth, and a cleaning seat 8 symmetrically and detachably installed on the lower end surface of the cleaning box 6 and close to the outer surface of the electrodialysis membrane stack 5. The electrodialysis unit 2 is provided with a first driving structure 49 for controlling the bidirectional screw device 7 to work, and a reinforcing block detachably fixed to the bidirectional screw device 7 is provided in the middle of the cleaning box 6; the cleaning mechanism also includes a conveyor belt structure 9 rotatably installed on the inner side of the cleaning seat 8, a detachable structure 9 detachably installed on the inner side of the cleaning seat 8, and a conveyor belt structure 9 detachably installed on the inner side of the cleaning seat 8. A cleaning belt 10 is provided on the outer surface of the conveyor belt structure 9, and several groups of cleaning strips 11 are detachably mounted on the cleaning belt 10 and are used to clean impurities adhering to the outer surface of the electrodialysis membrane stack 5. The lower end surface of the cleaning box 6 is provided with a through groove for moving the conveyor belt structure 9, and the outer surface of the conveyor belt structure 9 is provided with a fixing groove for fixing the cleaning belt 10; a cleaning groove 12 for cleaning impurities is provided on the cleaning strip 11, and the cleaning groove 12 can reduce the falling of impurities; a support seat 59 for assisting the cleaning seat 8 to move horizontally is provided on the inner side of the electrodialysis unit 2, and a roller for assisting the cleaning seat 8 to move is provided in the support seat 59.

[0045] In the present invention, the vertical cross-sections of the conveyor belt structure 9 and the cleaning belt 10 are both "7"-shaped ring structures; several groups of first auxiliary rollers 13 for assisting the conveyor belt structure 9 and second auxiliary rollers 14 arranged on the outside of the cleaning belt 10 to assist in supporting the conveyor belt structure 9 are rotatably installed inside the cleaning box 6. The first auxiliary roller 13 is arranged on the inner side of the conveyor belt structure 9 and assists the conveyor belt structure 9 in moving; the second auxiliary roller 14 is provided with a groove that matches the cleaning belt 10, and the groove prevents the second auxiliary roller 14 from contacting the cleaning strip 11 on the cleaning belt 10; several groups of adjustment components are arranged on the cleaning belt 10 and adjust the angle of the cleaning strip 11.

[0046] The adjustment assembly of the present invention includes a rotating member 15 detachably mounted on one side of the cleaning strip 11 and rotatably connected to the cleaning belt 10, a plurality of groups of return springs 16 detachably mounted on the rotating member 15, and a gravity bar 17 disposed at one end of the return spring 16 away from the rotating member 15 and pressing and stretching the rotating member 15. When the plurality of groups of cleaning strips 11 on one side of the cleaning belt 10 are close to the electrodialysis membrane stack 5, the return spring 16 is in a stretched state under the action of the gravity bar 17, thereby driving the rotating member 15 to control the cleaning strips 11 to deflect upward, so that the angle between the cleaning strips 11 and the cleaning belt 10 is an acute angle, thereby adjusting the electrodialysis membrane stack 5. The cleaning is carried out, and the gravity bar 17 of the cleaning belt 10 close to the inner top surface of the cleaning box 6 squeezes the return spring 16 under the action of gravity, so that the rotating part 15 controls the cleaning bar 11 to rotate, so that the angle between the cleaning bar 11 and the cleaning belt 10 is obtuse, which can facilitate the impurities on the cleaning bar 11 to fall onto the cleaning belt 10; wherein, the outer surface of the cleaning belt 10 is provided with an adjustment groove for installing an adjustment component; the cleaning belt 10 is provided with a sealing strip elastically connected to the cleaning strip 11 and sealing the adjustment groove, the sealing strip is set to a retractable state, and the cleaning belt 10 is sealed and connected to the cleaning strip 11.

[0047] In summary, the electrodialysis unit 2 performs electrodialysis separation on the chlorate brine. After the electrodialysis unit 2 has been working for a period of time, impurities will adhere to the electrodialysis membrane stack 5. The first driving structure 49 is started, and the cleaning box 6 is controlled by the bidirectional screw device 7 to move horizontally back and forth. The cleaning box 6 drives the cleaning seat 8 to move, and the conveyor belt structure 9 is started to drive the cleaning belt 10 to move. During the movement of the conveyor belt structure 9 and the cleaning belt 10, the first auxiliary roller 13 and the second auxiliary roller 14 are rotated to assist. The cleaning belt 10 drives the cleaning strip 11 to move. The impurities on the electrodialysis membrane stack 5 are cleaned and introduced into the cleaning box 6, so there is no need to close the electrodialysis unit 2 and disassemble the electrodialysis membrane stack 5 for cleaning; when the cleaning belt 10 is close to the several groups of cleaning strips 11 on one side of the electrodialysis membrane stack 5, under the action of the gravity bar 17, the return spring 16 is in a stretched state, thereby driving the rotating part 15 to control the cleaning strip 11 to deflect upward, so that the angle between the cleaning strip 11 and the cleaning belt 10 is an acute angle, so that the cleaning strip 11 is convenient for cleaning the electrodialysis membrane stack 5.

[0048] Example 3

[0049] Reference Figure 3 - Figure 5 and Figure 9, which is the third embodiment of the present invention, wherein the cleaning box 6 is provided with a cleaning component for cleaning the cleaning belt 10 and the cleaning strip 11; the inner bottom surface of the cleaning box 6 is provided with a collecting box 18 that cooperates with the cleaning component and is used to collect impurities cleaned by the cleaning component, and the inner side surface of the collecting box 18 is in an inclined state; one side surface of the collecting box 18 is provided with a connecting plate 19 that is in contact with the outer surface of the cleaning box 6; the cleaning box 6 is provided with a limiting component for limiting the connecting plate 19.

[0050] The cleaning assembly of the present invention includes an eccentric roller 20 rotatably mounted under the cleaning belt 10 and vibrating and cleaning the cleaning belt 10 and the cleaning strip 11, a plurality of cleaning brushes 21 detachably mounted on the outer surface of the eccentric roller 20 in a circular array, and a second driving structure 22 detachably mounted on the outer surface of the cleaning box 6 and controlling the eccentric roller 20 to rotate. The second driving structure 22 cleans the cleaning belt 10 and the cleaning strip 10 by controlling the eccentric roller 20 and the cleaning brush 21; the cleaning assembly also includes an elliptical roller 23 rotatably mounted on the inner side of the conveyor belt structure 9 and a cleaning brush 21 for cleaning the cleaning belt 10. The arc-shaped convex strip 24 is installed at the long end of the elliptical roller 23 and vibrates to clean the cleaning belt 10. The elliptical roller 23 and the arc-shaped convex strip 24 cooperate to vibrate and knock the cleaning belt 10 below, thereby cleaning the impurities on the cleaning belt 10 and the cleaning strip 11; wherein, the interior of the cleaning box 6 is detachably installed with a baffle 25 for blocking the cleaning brush 21 from shaking off impurities; the elliptical roller 23 is provided with a first transmission belt structure 26 that is transmission-connected to the conveyor belt structure 9, and the conveyor belt structure 9 controls the rotation of the elliptical roller 23 through the first transmission belt structure 26.

[0051] In summary, when the cleaning belt 10 drives the cleaning strip 11 to move into the cleaning box 6, the gravity strip 17 squeezes the return spring 16 under the action of gravity, so that the rotating member 15 controls the cleaning strip 11 to rotate, so that the angle between the cleaning strip 11 and the cleaning belt 10 is an obtuse angle, which can facilitate the impurities on the cleaning strip 11 to fall onto the cleaning belt 10, and start the second driving structure 22 to drive the eccentric roller 20 to rotate. The eccentric roller 20 drives the cleaning brush 21 to clean the cleaning belt 10 and the cleaning strip 11. The conveyor belt structure 9 moves and drives the first transmission belt structure 26 to rotate. The first transmission belt structure 26 drives the elliptical roller 23 to rotate. The elliptical roller 23 drives the arc convex strip 24 to rotate, thereby knocking and vibrating the conveyor belt structure 9, thereby cleaning the impurities on the cleaning belt 10 and the cleaning strip 11 into the collection box 18.

[0052] Example 4

[0053] Reference Figure 3 and Figure 10 - Figure 13, which is the fourth embodiment of the present invention, wherein the limiting assembly of the present invention includes a limiting tube 27 detachably mounted on one side of the upper end surface of the cleaning box 6, a limiting rod 28 movably arranged in the limiting tube 27 and with its bottom end extending into the interior of the cleaning box 6, a limiting block 29 vertically mounted at the bottom of the limiting rod 28, and a connecting block 60 detachably mounted at the top of the limiting rod 28; wherein the limiting rod 28 is an "L"-shaped structure; an annular stopper 30 is provided on the limiting rod 28; a limiting block 30 connected to the annular stopper 30 is provided in the limiting tube 27 a limiting plate 32 which is plugged into the limiting block 29 is provided on the upper part of the inner side surface of the connecting plate 19, and a limiting groove which is connected to the limiting block 29 is provided on the lower end surface of the limiting plate 32; a trapezoidal stopper 33 which squeezes the connecting block 60 is provided on the inner wall of the electrodialysis unit 2; when the bidirectional screw device 7 controls the cleaning box 6 to clean and reset the electrodialysis membrane stack 5, the upper end surface of the connecting block 60 contacts the lower end surface of the trapezoidal stopper 33 to control the limiting rod 28 to move downward and separate the limiting block 29 from the limiting plate 32.

[0054] In the present invention, the electrodialysis unit 2 is provided with a discharge pipe 34 that can be extended into the bottom of the inner side of the collection box 18, a discharge pump 35 connected to the discharge pipe 34 and a discharge assembly for discharging the impurities collected in the collection box 18. The end of the discharge pipe 34 close to the discharge pump 35 is configured to be retractable so that it can be lifted and lowered in conjunction with the discharge pipe 34; wherein, a vibration structure 36 for clearing blockage of the discharge pipe 34 is provided inside the electrodialysis unit 2; the discharge pipe 34 is configured to be a square tube structure, the interior of the discharge pipe 34 is configured to be a circular hole structure, and the inner wall of the discharge pipe 34 is provided with an anti-sticking layer; the vibration structure 36 includes several groups of symmetrically mounted on the discharge pipe 34. There are semicircular ridges 50 on both sides of the outer surface of the material tube 34 and several groups of knocking strips 51 which are evenly spaced and arranged on the inner wall of the supporting square tube 41 and can knock on the discharge tube 34; the vertical section of the knocking strip 51 is a semicircular structure; several groups of vibration tubes 52 are vertically installed on the side of the knocking strip 51 close to the supporting square tube 41; a vibration rod 53 coaxially connected to the vibration tube 52 and a vibration spring 54 sleeved on the vibration rod 53 and connecting the vibration tube 52 to the supporting square tube 41 are vertically installed on the inner wall of the supporting square tube 41; when the discharge tube 34 is moved out of the collecting box 18, the connecting plate 19 controls the collection box 18 to be closed, and the discharge tube 34 stops moving.

[0055] The discharging assembly in the present invention includes a first rack 37 which is arranged on one side of the connecting plate 19 and controls the connecting plate 19 to move horizontally back and forth, a mounting block 38 which mounts the first rack 37 to the connecting plate 19, a first gear 39 which meshes with the first rack 37, and a driving motor 40 which controls the first gear 39 to rotate; the discharging assembly also includes a supporting square tube 41 which is sleeved on the outside of the discharging pipe 34, a second gear 42 which is rotatably arranged on the inner wall of the supporting square tube 41, and a second rack 43 which is arranged on the outer wall of the discharging pipe 34 and meshes with the second gear 42; wherein a transmission rod 44 which is coaxially connected to the second gear 42 is rotatably mounted on the outer wall of the supporting square tube 41; a second transmission belt structure 45 which is transmission-connected to the transmission rod 44 is provided on the end of the first gear 39 away from the driving motor 40; a guide Seat 55; the outer wall of the discharge pipe 34 is symmetrically provided with a guide bar 56 which is slidably connected to the guide seat 55; a guide groove for the guide bar 56 to move is provided on the guide seat 55, and the guide seat 55 and the guide bar 56 are used in conjunction with each other to enable the discharge pipe 34 to move stably; the diameter of the first gear 39 is larger than the diameter of the second gear 42; the diameter of the transmission end of the second transmission belt structure 45 connected to the first gear 39 is larger than the diameter of the transmission end of the second transmission belt structure 45 connected to the second gear 42; when the drive motor 40 controls the first gear 39 to rotate counterclockwise, the first rack 37 controls the collection box 18 to move outward through the connecting plate 19, and the first gear 39 drives the second gear 42 to rotate through the second transmission belt structure 45 to control the second rack 43 to move downward and allow the discharge pipe 34 to be inserted into the inner bottom of the collection box 18.

[0056] In summary, after the cleaning mechanism completes cleaning of the electrodialysis membrane stack 5, the bidirectional screw device 7 drives the cleaning box 6 to move back, so that the cleaning box 6 drives the limiting rod 28 to move to one side of the trapezoidal stopper 33, so that the upper end surface of the connecting block 60 contacts the lower end surface of the trapezoidal stopper 33, thereby causing the limiting rod 28 to move downward, so that the annular stopper 30 squeezes the limiting spring 31, and the limiting rod 28 moves downward to drive the limiting block 29 to separate from the limiting plate 32, and the driving motor 40 is started to drive the first gear 39 to rotate counterclockwise. The first gear 39 controls the first rack 37 to drive the connecting plate 19 to move, so that the connecting plate 19 drives the collecting box 18 to move outward. When the first gear 39 rotates, it drives the second transmission belt structure 45 to rotate, so that the second transmission belt structure 45 drives the transmission rod 44 to drive the second gear 42 to rotate, and the second gear 42 drives The second rack 43 is moved downward, and the second rack 43 drives the discharge pipe 34 to move downward, so that the guide bar 56 moves in the guide seat 55, and the lower end of the discharge pipe 34 is inserted into the inner bottom of the collection box 18, and the discharge pump 35 is started to discharge the impurities collected in the collection box 18; when the discharge is completed, the drive motor 40 is started, and the first gear 39 is driven to rotate clockwise, and the discharge pipe 34 is controlled to move upward, so that the semicircular convex strip 50 squeezes the knocking strip 51 when it contacts the knocking strip 51, so that the vibration tube 52 squeezes the vibration spring 54, and when the semicircular convex strip 50 separates from the knocking strip 51, the vibration spring 54 is reset to control the knocking strip 51 to knock on the discharge pipe 34, thereby introducing the impurities adhered to the inner wall of the discharge pipe 34 into the collection box 18, and after the connecting plate 19 controls the collection box 18 to be closed, the discharge pipe 34 stops moving.

[0057] Example 5

[0058] Reference Figure 1 - Figure 14 , which is the fourth embodiment of the present invention, wherein,

[0059] A method for separating chlorate brine, comprising the following steps:

[0060] Step A: The pretreatment unit 1 removes suspended matter and large particle impurities from the chlorate brine, and introduces the treated chlorate brine into the electrodialysis unit 2 for electrodialysis separation of chlorate and brine, and then evaporation and concentration are carried out in the evaporation separation unit 3;

[0061] Step B: cleaning impurities from the electrodialysis membrane stack 5 by controlling the cleaning seat 8, cleaning belt 10 and cleaning strip 11 through the bidirectional screw device 7 in the electrodialysis unit 2;

[0062] Step C: The cleaning belt 10 and the cleaning strip 11 are cleaned by the eccentric roller 20 and the cleaning brush 21 in the cleaning box 6, and the cleaning belt 10 and the cleaning strip 11 are vibrated and cleaned by the second driving structure 22, the elliptical roller 23 and the arc-surface convex strips 24;

[0063] Step D: Release the limit of the connecting plate 19 through the limit assembly, start the drive motor 40 to open the collection box 18 and insert the discharge pipe 34 into the collection box 18, and the discharge pump 35 discharges the impurities collected in the collection box 18.

[0064] Example 6

[0065] Reference Figure 1 - Figure 14 , this embodiment is obtained by combining Example 1, Example 2, Example 3, Example 4 and Example 5.

[0066] The first drive structure 49, the bidirectional screw device 7, and the cleaning box 6 cooperate to control the reciprocating movement of the cleaning seat 8. The conveyor belt structure 9, the cleaning belt 10, the first auxiliary roller 13, and the second auxiliary roller 14 cooperate to enable the cleaning bar 11 to clean the electrodialysis membrane stack 5. The gravity bar 17, the return spring 16, and the rotating member 15 cooperate to adjust the direction of the cleaning bar 11, thereby improving the cleaning effect of the cleaning mechanism. It is no longer necessary to stop the electrodialysis unit 2 to disassemble and clean the electrodialysis membrane stack 5, thereby improving the separation efficiency of chlorate and brine.

[0067] The gravity bar 17, the return spring 16, and the rotating member 15 adjust the angle of the cleaning strip 11. The second drive structure 22, the eccentric roller 20, and the cleaning brush 21 cooperate to clean the cleaning belt 10 and the cleaning strip 11. The conveyor belt structure 9, the first transmission belt structure 26, the elliptical roller 23, and the arc-surface convex strips 24 cooperate to clean impurities on the cleaning belt 10 and the cleaning strip 11 into the collection box 18. This eliminates the need for workers to stop the electrodialysis unit 2 to clean the cleaning belt 10 and the cleaning strip 11, thereby reducing the labor intensity of the workers, improving the cleaning efficiency of the cleaning assembly, and improving the separation efficiency of chlorate and brine.

[0068] The cleaning box 6, the limiting rod 28, the connecting block 60, the trapezoidal stopper 33 and the limiting spring 31 cooperate to separate the limiting block 29 from the limiting plate 32, thereby releasing the limit on the connecting plate 19. The driving motor 40, the first gear 39 and the first rack 37 cooperate to control the collection box 18 to move outward through the connecting plate 19. The first gear 39, the second transmission belt structure 45, the transmission rod 44, the second gear 42 and the second rack 43 insert the lower end of the discharge pipe 34 into the inner bottom of the collection box 18. The guide bar 56 and the guide seat 55 improve the stability of the discharge pipe 34 when it moves. The discharge pump 35 and the discharge pipe 34 cooperate to discharge the impurities collected in the collection box 18, so that there is no need to stop the electrodialysis unit 2 to discharge the collection box 18, thereby improving the separation efficiency of chlorate brine. When the discharge assembly is reset, the semicircular ridge 50, the knocking bar 51, the vibration tube 52, the vibration rod 53 and the vibration spring 54 cooperate to knock on the discharge pipe 34 to guide the impurities adhered to the inner wall of the discharge pipe 34 into the collection box 18, thereby preventing the impurities from adhering to the discharge pipe 34 and possibly causing blockage of the discharge pipe 34, thereby reducing the number of times the discharge pipe 34 is maintained.

[0069] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A chlorate-salt water separation device, comprising a pretreatment unit (1), an electrodialysis unit (2) and an evaporation separation unit (3) connected in sequence, wherein the electrodialysis unit (2) is provided with a plurality of electrodialysis membrane stacks (5), characterized in that: The evaporation separation unit (3) is provided with a circulation pump (4) for introducing the chlorate brine after evaporation and concentration into the electrodialysis unit (2); The electrodialysis unit (2) is provided with a plurality of cleaning mechanisms for cleaning the electrodialysis membrane stack (5); The cleaning mechanism comprises a conveyor belt structure (9) movably arranged on the electrodialysis unit (2) and controlled to move back and forth, a cleaning belt (10) detachably mounted on the outer surface of the conveyor belt structure (9), a plurality of cleaning strips (11) detachably mounted on the cleaning belt (10) and used to clean the electrodialysis membrane stack (5), and a plurality of adjustment components arranged on the cleaning belt (10) and used to adjust the angles of the cleaning strips (11); The regulating assembly comprises a rotating member (15) detachably mounted on a side of the cleaning strip (11) and rotatably connected to the cleaning belt (10), a plurality of reset springs (16) detachably mounted on the rotating member (15), and a gravity bar (17) disposed at an end of the reset spring (16) away from the rotating member (15) and for squeezing and stretching the rotating member (15). The gravity bar (17) causes the cleaning strip (11) to form an acute angle contact with the electrodialysis membrane stack (5) through gravity and performs cleaning.

2. A chlorate-salt water separation device according to claim 1, characterized in that: The cleaning mechanism comprises a cleaning box (6) movably arranged above the electrodialysis membrane stack (5), a bidirectional screw device (7) installed above the electrodialysis membrane stack (5) and controlling the horizontal reciprocating movement of the cleaning box (6), and a cleaning seat (8) symmetrically and detachably installed on the lower end surface of the cleaning box (6) and close to the outer surface of the electrodialysis membrane stack (5); The cleaning strip (11) is provided with a cleaning groove (12) for cleaning impurities.

3. A chlorate-salt water separation device according to claim 2, characterized in that: The vertical cross-sections of the conveyor belt structure (9) and the cleaning belt (10) are both in the shape of a "7" ring; Several groups of first auxiliary rollers (13) for assisting the conveyor belt structure (9) and second auxiliary rollers (14) arranged outside the cleaning belt (10) for assisting in supporting the conveyor belt structure (9) are rotatably installed inside the cleaning box (6); The second auxiliary roller (14) is provided with a groove matching the cleaning belt (10).

4. A chlorate-salt water separation device according to claim 3, characterized in that: The outer surface of the cleaning belt (10) is provided with an adjustment groove for installing an adjustment component; The cleaning belt (10) is provided with a sealing strip which is elastically connected to the cleaning strip (11) and seals the adjustment groove.

5. A chlorate-salt water separation device according to claim 4, characterized in that: The cleaning box (6) is provided with a cleaning component for cleaning the cleaning belt (10) and the cleaning strip (11); The inner bottom surface of the cleaning box (6) is provided with a collecting box (18) that cooperates with the cleaning component and is used to collect impurities cleaned by the cleaning component; A connecting plate (19) is provided on one side of the collecting box (18) and is fitted with the outer surface of the cleaning box (6); The cleaning box (6) is provided with a limiting component for limiting the connection plate (19).

6. A chlorate-salt water separation device according to claim 5, characterized in that: The cleaning assembly comprises an eccentric roller (20) rotatably mounted below the cleaning belt (10) and vibratingly cleaning the cleaning belt (10) and the cleaning strip (11), a plurality of cleaning brushes (21) detachably mounted on the outer surface of the eccentric roller (20) in a circular array, and a second driving structure (22) detachably mounted on the outer surface of the cleaning box (6) and controlling the rotation of the eccentric roller (20); The cleaning assembly further comprises an elliptical roller (23) rotatably mounted on the inner side of the conveyor belt structure (9) and an arc-surface convex strip (24) symmetrically mounted on the long end of the elliptical roller (23) and vibratingly cleaning the cleaning belt (10); Wherein, a baffle (25) for shielding the cleaning brush (21) from throwing away impurities is detachably installed inside the cleaning box (6); The elliptical roller (23) is provided with a first transmission belt structure (26) which is transmission-connected to the transmission belt structure (9).

7. The chlorate-salt water separation equipment according to claim 6, characterized in that: The limiting assembly comprises a limiting tube (27) detachably mounted on one side of the upper end surface of the cleaning box (6), a limiting rod (28) movably arranged in the limiting tube (27) and with its bottom end extending into the interior of the cleaning box (6), a limiting block (29) vertically mounted on the bottom of the limiting rod (28), and a connecting block (60) detachably mounted on the top of the limiting rod (28); Wherein, the limiting rod (28) is in an "L"-shaped structure; An annular stopper (30) is provided on the limiting rod (28); The limiting tube (27) is provided with a limiting spring (31) connected to the annular stopper (30); A limiting plate (32) plugged into the limiting block (29) is provided on the upper portion of the inner side surface of the connecting plate (19); The inner wall of the electrodialysis unit (2) is provided with a trapezoidal stopper (33) for squeezing the connecting block (60); When the bidirectional screw device (7) controls the cleaning box (6) to clean and reset the electrodialysis membrane stack (5), the upper end surface of the connecting block (60) contacts the lower end surface of the trapezoidal stopper (33), controlling the limit rod (28) to move downward and separating the limit block (29) from the limit plate (32).

8. The chlorate-brine separation equipment according to claim 7, characterized in that: The electrodialysis unit (2) is provided with a discharge pipe (34) that can extend into the inner bottom of the collection box (18), a discharge pump (35) that is in communication with the discharge pipe (34), and a discharge assembly that discharges impurities collected in the collection box (18); Wherein, a vibration structure (36) for clearing blockage of the discharge pipe (34) is provided inside the electrodialysis unit (2).

9. The chlorate-salt water separation equipment according to claim 8, characterized in that: The discharge assembly includes a first rack (37) arranged on a side of the connecting plate (19) and controlling the connecting plate (19) to move horizontally back and forth, a mounting block (38) for mounting the first rack (37) on the connecting plate (19), a first gear (39) meshing with the first rack (37), and a driving motor (40) for controlling the first gear (39) to rotate; The discharge assembly further comprises a supporting square tube (41) sleeved on the outside of the discharge pipe (34), a second gear (42) rotatably arranged on the inner wall of the supporting square tube (41), and a second rack (43) arranged on the outer wall of the discharge pipe (34) and meshing with the second gear (42); Wherein, a transmission rod (44) coaxially connected to the second gear (42) is rotatably mounted on the outer wall of the supporting square tube (41); A second transmission belt structure (45) is provided at one end of the first gear (39) away from the driving motor (40) and is transmission-connected to the transmission rod (44); The diameter of the first gear (39) is greater than the diameter of the second gear (42); The diameter of the transmission end of the second transmission belt structure (45) connected to the first gear (39) is larger than the diameter of the transmission end of the second transmission belt structure (45) connected to the second gear (42); When the driving motor (40) controls the first gear (39) to rotate counterclockwise, the first rack (37) controls the collection box (18) to move outward through the connecting plate (19), and the first gear (39) drives the second gear (42) to rotate through the second transmission belt structure (45) to control the second rack (43) to move downward and allow the discharge pipe (34) to be inserted into the inner bottom of the collection box (18).

10. A method for separating chlorate brine, characterized in that: The chlorate-brine separation device according to any one of claims 1 to 9, comprising the following steps: Step A: The pretreatment unit (1) removes suspended matter and large particle impurities from the chlorate brine, and introduces the treated chlorate brine into the electrodialysis unit (2) for electrodialysis separation of chlorate and brine, and then evaporation and concentration are carried out by the evaporation separation unit (3); Step B: The bidirectional screw device (7) in the electrodialysis unit (2) controls the cleaning seat (8), the cleaning belt (10) and the cleaning strip (11) to clean the electrodialysis membrane stack (5) of impurities. During the cleaning process, the gravity strip (17) causes the cleaning strip (11) to form an acute angle contact with the electrodialysis membrane stack (5) through gravity. Step C: cleaning the cleaning belt (10) and the cleaning strip (11) by means of the eccentric roller (20) and the cleaning brush (21) in the cleaning box (6), and vibrating and cleaning the cleaning belt (10) and the cleaning strip (11) by means of the second driving structure (22), the elliptical roller (23) and the arc-surface convex strip (24); Step D: releasing the limit of the connecting plate (19) through the limit assembly, starting the driving motor (40) to open the collecting box (18) and inserting the discharge pipe (34) into the collecting box (18), and the discharge pump (35) discharges the impurities collected in the collecting box (18).

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