Filtering equipment for chemical production

Abstract

The invention relates to the technical field of filtering equipment, in particular to filtering equipment for chemical production, which comprises a mounting pipe, an outer cylinder, a filtering cylinder and the like, the mounting pipe is communicated with an outer cylinder; the outer cylinder is fixedly connected with a filter cylinder for filtering crystals in the waste liquid; and a plurality of filter holes are formed in the filter cartridge. According to the filtering equipment, crystals in waste liquid are filtered through the filtering cylinder, then the filtering holes are plugged through the plugging cylinder, washing liquid is conveyed into the filtering cylinder through the liquid inlet pipe, and finally the crystals are stirred through the stirring plate, so that the filtering equipment not only can be used for filtering the waste liquid and the crystals, but also can be used for washing the crystals; the filtering equipment can be used for two purposes, so that the problems that the actual production cost is inevitably increased and factory production is not facilitated due to the fact that washing equipment needs to be additionally purchased to wash crystals because existing filtering equipment cannot wash the crystals are solved.

Description

Technical Field

[0001] The invention relates to the technical field of filtering equipment, and in particular to filtering equipment used in chemical production. Background Art

[0002] In the existing chemical production process, when the chemical stock solution forms complete crystals in the reactor, the waste liquid in the reactor is first discharged, then the crystals in the reactor are taken out, and finally the crystals are washed;

[0003] In the process of discharging the waste liquid, since the waste liquid contains crystals, filtering equipment is usually required to filter the waste liquid in order to filter out the crystals in the waste liquid and prevent the crystals in the waste liquid from being wasted.

[0004] However, the existing filtering equipment cannot wash the crystals, so it is necessary to purchase additional washing equipment to wash the crystals. This method will inevitably increase the actual production cost and is not conducive to factory production. Summary of the invention

[0005] In order to overcome the disadvantage that existing filtering equipment cannot wash crystals, and therefore, additional washing equipment needs to be purchased to wash the crystals, which will inevitably increase the actual production cost and is not conducive to factory production, the present invention provides a filtering equipment for chemical production.

[0006] The technical implementation scheme of the present invention is as follows: a filtering device for chemical production, comprising a mounting tube and an outer tube; the mounting tube is connected to the outer tube; the filtering tube, a plugging plate, a liquid outlet pipe 1, a plugging tube, an electric push rod 1, a liquid inlet pipe, a liquid outlet pipe 2, a rotating assembly and a stirring assembly; the outer tube is fixedly connected to a filtering tube for filtering crystals in waste liquid; the filtering tube is provided with a plurality of filtering holes; the filtering tube is detachably connected to the plugging plate; the outer tube is connected to at least one liquid outlet pipe 1; the outer tube is slidably connected to a plugging tube for plugging the filtering holes, and the plugging tube is connected to the filtering tube contact; the plugging cylinder is provided with a plurality of arc-shaped through grooves, and each of the arc-shaped through grooves is aligned with the corresponding filter hole; the outer cylinder is fixedly connected with at least one electric push rod 1, and the telescopic parts of all electric push rods 1 are fixedly connected with the plugging cylinder; the outer cylinder is fixedly connected with at least one liquid inlet pipe, and the liquid inlet pipe is connected with the filter cylinder; the plugging plate is fixedly connected with a liquid outlet pipe 2; a filter screen is arranged in the liquid outlet pipe 2; a valve is arranged in the liquid outlet pipe 2; the outer cylinder is connected with a rotating component for driving the filter cylinder to rotate, and the rotating component is connected with the filter cylinder; the outer cylinder is connected with a stirring component for stirring the crystals.

[0007] More preferably, the rotating assembly includes a motor 1, a gear 1 and a gear ring 1; the outer cylinder is fixedly connected to at least one motor 1; the output shaft of motor 1 is fixedly connected to gear 1; the filter cylinder is fixedly connected to gear ring 1, and gear ring 1 is meshed with gear 1.

[0008] More preferably, the stirring assembly includes a mounting disc, a connecting rod 1, a long rotating shaft rod, a short rotating shaft rod, a stirring plate and a rotating unit; the outer cylinder is rotatably connected to the mounting disc; the mounting disc is fixedly connected to at least one connecting rod 1; the connecting rod 1 is fixedly connected to the long rotating shaft rod; the long rotating shaft rod is rotatably connected to a plurality of short rotating shaft rods; each short rotating shaft rod is fixedly connected to a stirring plate for stirring the crystals; the outer cylinder is connected to the rotating unit, and the rotating unit is connected to the mounting disc.

[0009] More preferably, the rotating unit includes motor 2, gear 2 and gear ring 2; the outer cylinder is fixedly connected to at least one motor 2; the output shaft of motor 2 is fixedly connected to gear 2; the mounting disc is fixedly connected to gear ring 2, and gear ring 2 is meshed with gear 2.

[0010] More preferably, all the short rotating shaft rods on the long rotating shaft rod are arranged to be distributed in a spiral array as a whole.

[0011] More preferably, a spiral scraper is further included; all the rotating shaft short rods are fixedly connected with the spiral scraper, and the spiral scraper is in contact with the filter cartridge.

[0012] More preferably, the inner bottom of the outer cylinder is inclined so as to be higher in the middle and lower around.

[0013] More preferably, it also includes an air inlet pipe; the filter cartridge is fixedly connected to at least one air inlet pipe; the mounting disc is provided with a hollow portion one, and the hollow portion one is connected to the air inlet pipe; each connecting rod one is provided with a hollow portion two, and all hollow portions two are connected to the hollow portion one; the long rod of the rotating shaft is provided with a hollow portion three, and the hollow portion three is connected to all hollow portions two; each short rod of the rotating shaft is provided with a hollow portion four, and all hollow portions four are connected to the hollow portion three; each stirring plate is provided with a hollow portion five, and each hollow portion five is connected to the corresponding hollow portion four; each stirring plate is provided with a plurality of upward-facing air outlet holes, and each air outlet hole is connected to the corresponding hollow portion five.

[0014] More preferably, it also includes a power assembly; the long rod of the rotating shaft is connected to a power assembly for changing the air outlet from an upward direction to a downward direction, and the power assembly is connected to the filter cartridge and the short rod of the rotating shaft; the power assembly consists of a sliding tube, two electric push rods, two connecting rods, a mounting plate, a rack and three gears; the long rod of the rotating shaft is slidably connected to the sliding tube; the filter cartridge is fixedly connected to at least one two electric push rods; the telescopic part of the two electric push rods is fixedly connected to two connecting rods, and the two connecting rods are rotatably connected to the sliding tube; the sliding tube is fixedly connected to mounting plates matching the number of the short rods of the rotating shaft; each mounting plate is fixedly connected to a rack; each short rod of the rotating shaft is fixedly connected to a three gears, and each three gears are meshed with the corresponding rack.

[0015] More preferably, a pressure-bearing hole plate is further included, and the pressure-bearing hole plate is arranged in the second liquid outlet pipe, and the pressure-bearing hole plate is in contact with the filter screen in the second liquid outlet pipe.

[0016] The present invention has the following advantages: the crystals in the waste liquid are filtered through the filter cartridge, and then the filter holes are blocked through the blocking cartridge, and then the washing liquid is transported into the filter cartridge through the liquid inlet pipe, and finally the crystals are stirred through the stirring plate. In this way, the filtering device can not only filter the waste liquid and the crystals, but also wash the crystals, so that the filtering device can be used in one body to avoid the problem that the existing filtering device cannot wash the crystals, and therefore, it is necessary to purchase additional washing equipment to wash the crystals. This method will inevitably increase the actual production cost, which is not conducive to the problem of factory production;

[0017] By setting the air inlet pipe, the first hollow part, the second hollow part, the third hollow part, the fourth hollow part, the fifth hollow part and the air outlet hole, the gas enters the washing liquid through the air outlet hole, and then causes the washing liquid to roll in the form of bubbles, so as to accelerate the contact between the washing liquid and the crystals. In this way, even if the stirring plate rotates slowly, the washing efficiency of the washing liquid on the crystals can be improved, so as to prevent the problem that the time for the detergent to wash the crystals is still long because the stirring plate can only rotate slowly, that is, the crystals are stirred by the stirring plate;

[0018] By setting the power component, the air outlet holes on the stirring plate are changed from being upward to being downward, so that the gas discharged from the air outlet holes forms air pressure in the filter cartridge, and pushes the washing liquid in the crystal body through the liquid outlet pipe 2 to enter the external equipment for recovering the washing liquid, thereby reducing the total amount of washing liquid in the crystal body to prevent the problem that after the detergent in the filter cartridge is emptied, a large amount of washing liquid still remains in the crystal body on the sealing plate, and the washing liquid existing in the crystal body will affect the subsequent treatment of the crystal body, and this part of the washing liquid will be wasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure disclosed by the filtering device used for chemical production of the present invention;

[0020] Figure 2 A schematic diagram of the internal structure of the outer cylinder disclosed in the filtering device for chemical production of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of the outer cylinder, the filter cylinder, the plugging cylinder and the second liquid outlet pipe disclosed in the filtering device for chemical production of the present invention;

[0022] Figure 4 It is a schematic structural diagram of a rotating assembly and a stirring assembly disclosed in the filtering device for chemical production of the present invention;

[0023] Figure 5 It is a schematic structural diagram of a filter cartridge and a plugging cartridge disclosed in the filtering equipment for chemical production of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the installation disc, the first connecting rod, the long rotating shaft rod, the short rotating shaft rod, the stirring plate and the power assembly disclosed by the filtering device for chemical production of the present invention;

[0025] Figure 7 The present invention is a schematic structural diagram of a rotating shaft short rod and a stirring plate disclosed in a filtering device for chemical production.

[0026] The markings of the components in the attached drawings are as follows: 1-installation tube, 2-outer tube, 3-filter tube, 4-blocking plate, 5-liquid outlet tube 1, 6-blocking tube, 7-electric push rod 1, 8-liquid inlet tube, 9-liquid outlet tube 2, 111-motor 1, 112-gear 1, 113-gear ring 1, 121-installation disc, 122-connecting rod 1, 123-rotating shaft long rod, 124-rotating shaft short rod, 125-stirring plate, 131-motor 2, 132-gear 2, 133-gear ring 2, 211- spiral scraper, 311- air inlet pipe, 411- sliding pipe, 412- electric push rod 2, 413- connecting rod 2, 414- mounting plate, 415- rack, 416- gear 3, 417- pressure hole plate, 301- filter hole, 601- arc groove, 12101- hollow part 1, 12201- hollow part 2, 12301- hollow part 3, 12401- hollow part 4, 12501- hollow part 5, 12502- air outlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] A filtering device for chemical production, such as Figure 1-Figure 6 As shown, it includes a mounting tube 1 and an outer tube 2; the mounting tube 1 is connected to the outer tube 2;

[0030] It also includes a filter cartridge 3, a blocking plate 4, a liquid outlet pipe 5, a blocking cartridge 6, an electric push rod 7, a liquid inlet pipe 8, a liquid outlet pipe 9, a rotating assembly and a stirring assembly; the outer cartridge 2 is fixedly connected to the filter cartridge 3; the filter cartridge 3 is provided with a plurality of filter holes 301; the filter cartridge 3 is detachably connected to a blocking plate 4 for blocking it; the outer cartridge 2 is connected to two liquid outlet pipes 5 for discharging waste liquid, and the liquid outlet pipe 5 is connected to an external device for recovering waste liquid; the outer cartridge 2 is slidably connected to the blocking cartridge 6, and the blocking cartridge 6 is in contact with the filter cartridge 3; the blocking cartridge 6 is provided with a plurality of arc-shaped through grooves 601, and each arc-shaped through groove 601 is aligned with the corresponding filter hole 301; the outer cartridge 2 is screwed The bolt is connected to two electric push rods 7, and the telescopic parts of all electric push rods 7 are fixedly connected to the blocking cylinder 6; the outer cylinder 2 is fixedly connected to two liquid inlet pipes 8 for conveying washing liquid into the filter cylinder 3, and all liquid inlet pipes 8 are connected to the filter cylinder 3, and all liquid inlet pipes 8 are connected to the external equipment for conveying washing liquid; the blocking plate 4 is fixedly connected to a liquid outlet pipe 9 for discharging washing liquid, and the liquid outlet pipe 9 is connected to the external equipment for recovering washing liquid; a filter net for filtering crystals and washing liquid is arranged in the liquid outlet pipe 9; a valve is arranged in the liquid outlet pipe 9; the outer cylinder 2 is connected to a rotating component, and the rotating component is connected to the filter cylinder 3; the outer cylinder 2 is connected to a stirring component.

[0031] The rotating assembly includes a motor 111, a gear 112 and a gear ring 113; the outer cylinder 2 is bolted to two motors 111; the output shaft of each motor 111 is fixedly connected to a gear 112; the filter cylinder 3 is fixedly connected to a gear ring 113, and the gear ring 113 is meshed with all gears 112.

[0032] The stirring assembly includes a mounting disc 121, a connecting rod 122, a long shaft rod 123, a short shaft rod 124, a stirring plate 125 and a rotating unit; the outer cylinder 2 is rotatably connected to the mounting disc 121; the mounting disc 121 is fixedly connected to three connecting rods 122 distributed in a circular array; all connecting rods 122 are commonly fixedly connected to the long shaft rod 123; the long shaft rod 123 is rotatably connected to five short shaft rods 124; each short shaft rod 124 is fixedly connected to a stirring plate 125; the outer cylinder 2 is connected to a rotating unit for driving the mounting disc 121 and the parts connected thereto to rotate, and the rotating unit is connected to the mounting disc 121.

[0033] The rotating unit includes a motor 2 131 , a gear 2 132 and a gear ring 2 133 ; the outer cylinder 2 is bolted with two motors 2 131 ; the output shaft of each motor 2 131 is fixedly connected with a gear 2 132 ; the mounting disc 121 is fixedly connected with a gear ring 2 133 , and the gear ring 2 133 is meshed with all gears 2 132 .

[0034] All the short shaft rods 124 on the long shaft rod 123 are arranged to be distributed in a spiral array as a whole, and this arrangement is used to enable the stirring plate 125 to stir the crystals and flip them upward.

[0035] It also includes a spiral scraper 211 ; all the rotating shaft short rods 124 are fixedly connected with the spiral scraper 211 for scraping the crystals attached to the filter cartridge 3 , and the spiral scraper 211 is in contact with the filter cartridge 3 .

[0036] The inner bottom of the outer cylinder 2 is inclined with a high middle portion and low surrounding portions, and this arrangement is used to allow the waste liquid to flow into the liquid outlet pipe 5 better.

[0037] The specific operation of the above-mentioned embodiment 1 is as follows: when the chemical raw liquid forms complete crystals in the reactor, first manually open the valve on the discharge pipe of the reactor to allow the crystals and waste liquid in the reactor to flow into the filter cartridge 3 through the installation pipe 1, so as to transfer the crystals and waste liquid in the reactor to this device for filtering and separation operation. It should be noted that since the lower end of the filter cartridge 3 is blocked by the blocking plate 4, when the waste liquid flows into the filter cartridge 3, the waste liquid will flow into the outer cylinder 2 through the filter hole 301 and the arc groove 601 in turn, and then flow into the external waste liquid recovery device through the liquid outlet pipe 5, and when the waste liquid flows through the filter hole 301, the crystal cannot pass through the filter hole 301, that is, the crystal will be retained in the filter cartridge 3, thereby realizing the filtration of the waste liquid and the crystal.

[0038] While the crystals and waste liquid flow into the filter cartridge 3, the output shaft of the control motor 111 drives the filter cartridge 3 to rotate via the gear 112 and the gear ring 113 in turn, so that the filter cartridge 3 drives the crystals and waste liquid therein to rotate. Under the action of centrifugal force, the waste liquid can better enter the filter hole 301, so as to enhance the filtering effect of the waste liquid and the crystals.

[0039] When the waste liquid and crystals in the reactor are completely discharged, the telescopic part of the electric push rod 1 7 is controlled to drive the blocking cylinder 6 to move downward, so that the arc-shaped through groove 601 and the corresponding filter hole 301 are no longer aligned, that is, the filter hole 301 will be blocked by the blocking cylinder 6, and then the external device for transmitting washing liquid is controlled to transmit the washing liquid to the filter cylinder 3 through the liquid inlet pipe 8 until the washing liquid covers all the crystals, and then the output shaft of the motor 2 131 is controlled to drive the mounting disc 121 to rotate through the gear 2 132 and the gear ring 2 133 in turn, so that the mounting disc 121 drives the stirring plate 125 to rotate through the connecting rod 1 122, the long shaft rod 123 and the short shaft rod 124 in turn, so that the stirring plate 125 stirs the crystals, so that the crystals are in better contact with the detergent, so as to wash the crystals and improve the purity of the crystals.

[0040] When the crystal washing is completed, the valve on the liquid outlet pipe 2 9 is opened manually to allow the detergent in the filter cartridge 3 to flow through the liquid outlet pipe 2 9 to the external equipment for recovering the washing liquid. In this process, since a filter screen is provided in the liquid outlet pipe 2 9, the crystals will be intercepted by the filter screen in the liquid outlet pipe 2 9 into the filter cartridge 3. When all the detergent in the filter cartridge 3 is discharged, the sealing plate 4 is manually removed from the filter cartridge 3 to discharge the washed crystals.

[0041] In this way, the crystals in the waste liquid are filtered through the filter cartridge 3, and then the filter holes 301 are blocked by the blocking cartridge 6, and then the washing liquid is transported into the filter cartridge 3 through the liquid inlet pipe 8, and finally the crystals are stirred by the stirring plate 125. In this way, the filtering device can not only filter the waste liquid and the crystals, but also wash the crystals, so that the filtering device can be used for two purposes in one, so as to avoid the problem that the existing filtering equipment cannot wash the crystals. Therefore, it is necessary to purchase additional washing equipment to wash the crystals. This method will inevitably increase the actual production cost, which is not conducive to factory production.

[0042] Furthermore, by arranging all the short shaft rods 124 on the long shaft rod 123 to be distributed in a spiral array as a whole, the stirring plate 125 can flip the crystals upwards during the process of stirring the crystals, so that the crystals and the detergent are in better contact again.

[0043] Furthermore, during the process of filtering the waste liquid and the crystals by the filter cartridge 3 , the waste crystals are likely to adhere to the inner wall of the filter cartridge 3 , and thus are likely to clog the filter holes 301 .

[0044] Therefore, in the process of filtering the waste liquid and crystals by the filter cartridge 3, in the same way as the stirring assembly drives the stirring plate 125 to stir the crystals, the stirring assembly drives the spiral scraper 211 to rotate, so that the spiral scraper 211 scrapes the crystals attached to the inner wall of the filter cartridge 3, so that some crystals are easily attached to the inner wall of the filter cartridge 3, and then easily clog the filter hole 301.

[0045] Example 2

[0046] On the basis of Example 1, Figure 1-Figure 4 and Figure 6-Figure 7As shown, it also includes an air inlet pipe 311; the filter cartridge 3 is fixedly connected to two air inlet pipes 311, and all the air inlet pipes 311 are connected to an external gas delivery device; the mounting disc 121 is provided with a hollow part 12101, and the hollow part 12101 is connected to all the air inlet pipes 311; each connecting rod 122 is provided with a hollow part 2 12201, and all the hollow parts 2 12201 are connected to the hollow part 1 12101; the rotating shaft long rod 123 is provided with a hollow part 3 12301, and the hollow part 3 12301 It is connected with all hollow parts two 12201; each rotating shaft short rod 124 is provided with a hollow part four 12401, and all hollow parts four 12401 are connected with the hollow part three 12301; each stirring plate 125 is provided with a hollow part five 12501, and each hollow part five 12501 is connected with the corresponding hollow part four 12401; each stirring plate 125 is provided with a plurality of upward-facing air outlet holes 12502, and each air outlet hole 12502 is connected with the corresponding hollow part five 12501.

[0047] The specific operation of the above-mentioned embodiment 2 is as follows: Taking into account that, during the process of washing the crystals with the detergent, the crystals are stirred by the stirring plate 125, and by arranging all the short shaft rods 124 on the long shaft rod 123 to be distributed in a spiral array as a whole, the stirring plate 125 can flip the crystals upwards during the process of stirring the crystals, so that the crystals and the detergent can be better contacted again.

[0048] However, in the process of stirring the crystals by the stirring plate 125, in order to prevent the stirring plate 125 from causing the crystals to break into small particles, the stirring plate 125 can only rotate slowly, that is, the crystals are stirred by the stirring plate 125, and the detergent still takes a long time to wash the crystals.

[0049] Therefore, in the process of stirring the crystals by the stirring plate 125, the device controlling the external gas delivery delivers gas to the hollow part five 12501 through the air inlet pipe 311, hollow part one 12101, hollow part two 12201, hollow part three 12301 and hollow part four 12401 in turn, and the gas flowing into the hollow part five 12501 will enter the washing liquid through the air outlet 12502. It should be noted that the gas used will not react with the crystals, and when the gas enters the washing liquid, the gas will move upward in the filter cartridge 3 in the form of bubbles. In this process, the bubbles formed will cause the washing liquid to roll to accelerate the contact between the washing liquid and the crystals. In this way, even if the stirring plate 125 rotates slowly, the washing efficiency of the washing liquid on the crystals can be improved to prevent the problem that the time for the detergent to wash the crystals is still long because the stirring plate 125 can only rotate slowly, that is, the crystals are stirred by the stirring plate 125.

[0050] Example 3

[0051] On the basis of Example 2, Figure 2-Figure 4 and Figure 6-Figure 7 As shown, a power assembly is also included; the long shaft rod 123 is connected to the power assembly, and the power assembly is connected to the filter cartridge 3 and the short shaft rod 124;

[0052] The power assembly consists of a sliding tube 411, an electric push rod 412, a connecting rod 413, a mounting plate 414, a rack 415 and a gear 416; the rotating shaft long rod 123 is slidably connected to the sliding tube 411; the filter cartridge 3 is bolted to two electric push rods 412; the telescopic parts of all electric push rods 412 are commonly fixedly connected to the connecting rod 413, and the connecting rod 413 is rotatably connected to the sliding tube 411; the sliding tube 411 is fixedly connected to five mounting plates 414; each mounting plate 414 is fixedly connected to a rack 415; each rotating shaft short rod 124 is fixedly connected to a gear 416, and each gear 416 is meshed with the corresponding rack 415.

[0053] It also includes a pressure-bearing hole plate 417. The pressure-bearing hole plate 417 is arranged in the second liquid outlet pipe 9 to prevent the filter screen in the second liquid outlet pipe 9 from deforming, and the pressure-bearing hole plate 417 is in contact with the filter screen in the second liquid outlet pipe 9.

[0054] The specific operation of the above-mentioned embodiment 3 is as follows: Considering that after the detergent in the filter cartridge 3 is emptied, a large amount of washing liquid still remains in the crystals on the sealing plate 4, the washing liquid existing in the crystals will affect the subsequent treatment of the crystals, and this part of the washing liquid will be wasted.

[0055] Therefore, before manually removing the blocking plate 4 from the filter cartridge 3, first manually close the valve on the discharge pipe of the reactor, and then control the telescopic portion of the electric push rod 2 412 to push the sliding tube 411 to move downward on the long shaft rod 123 through the connecting rod 2 413, so that the sliding tube 411 drives the rack 415 to move downward through the mounting plate 414, and the rack 415 drives the short shaft rod 124 and the stirring plate 125 to rotate through the gear 3 416, so that the air outlet 12502 on the stirring plate 125 changes from facing upward to facing downward, and when the air outlet 12502 faces downward, the stirring plate 125 is in a horizontal state, and then the stirring plate 125 stirs the crystals in the manner described in Example 1, and at the same time, controls the external delivery gas The device of the body discharges gas from the air outlet 12502 in the manner described in Example 2. At this time, since the discharge pipe of the reactor has been blocked by its valve, the gas discharged from the air outlet 12502 will form air pressure in the filter cartridge 3 and will enter the external equipment for recovering the washing liquid through the liquid outlet pipe 29. In this process, the air pressure formed will push the washing liquid in the crystal body through the liquid outlet pipe 29 to enter the external equipment for recovering the washing liquid, thereby reducing the total amount of washing liquid in the crystal body to prevent a large amount of washing liquid from remaining in the crystal body on the sealing plate 4 after the detergent in the filter cartridge 3 is emptied, and the washing liquid existing in the crystal body will affect the subsequent treatment of the crystal body, and this part of the washing liquid will be wasted.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filtering device for chemical production, comprising a mounting tube (1) and an outer tube (2); the mounting tube (1) is connected to the outer tube (2); and the characteristics are: The invention also comprises a filter cartridge (3), a blocking plate (4), a first liquid outlet pipe (5), a blocking cartridge (6), a first electric push rod (7), a liquid inlet pipe (8), a second liquid outlet pipe (9), a rotating assembly and a stirring assembly; the outer cartridge (2) is fixedly connected with a filter cartridge (3) for filtering crystals in waste liquid; the filter cartridge (3) is provided with a plurality of filter holes (301); the filter cartridge (3) is detachably connected with a blocking plate (4); the outer cartridge (2) is connected with at least one first liquid outlet pipe (5); the outer cartridge (2) is slidably connected with a blocking cartridge (6) for blocking the filter holes (301), and the blocking cartridge (6) is in contact with the filter cartridge (3); the blocking cartridge (6) is provided with a plurality of arc-shaped through grooves (601), Each arc-shaped through groove (601) is aligned with a corresponding filter hole (301); the outer cylinder (2) is fixedly connected to at least one electric push rod (7), and the telescopic parts of all the electric push rods (7) are fixedly connected to the blocking cylinder (6); the outer cylinder (2) is fixedly connected to at least one liquid inlet pipe (8), and the liquid inlet pipe (8) is connected to the filter cylinder (3); the blocking plate (4) is fixedly connected to a second liquid outlet pipe (9); a filter screen is arranged in the second liquid outlet pipe (9); a valve is arranged in the second liquid outlet pipe (9); the outer cylinder (2) is connected to a rotating assembly for driving the filter cylinder (3) to rotate, and the rotating assembly is connected to the filter cylinder (3); the outer cylinder (2) is connected to a stirring assembly for stirring the crystals.

2. A filtering device for chemical production according to claim 1, characterized in that: The rotating assembly comprises a motor (111), a gear (112) and a gear ring (113); the outer cylinder (2) is fixedly connected to at least one motor (111); the output shaft of the motor (111) is fixedly connected to the gear (112); the filter cylinder (3) is fixedly connected to the gear ring (113), and the gear ring (113) is meshed with the gear (112).

3. A filtering device for chemical production according to claim 2, characterized in that: The stirring assembly comprises a mounting disc (121), a connecting rod (122), a rotating shaft long rod (123), a rotating shaft short rod (124), a stirring plate (125) and a rotating unit; the outer cylinder (2) is rotatably connected to the mounting disc (121); the mounting disc (121) is fixedly connected to at least one connecting rod (122); the connecting rod (122) is fixedly connected to the rotating shaft long rod (123); the rotating shaft long rod (123) is rotatably connected to a plurality of rotating shaft short rods (124); each rotating shaft short rod (124) is fixedly connected to a stirring plate (125) for stirring the crystals; the outer cylinder (2) is connected to the rotating unit, and the rotating unit is connected to the mounting disc (121).

4. A filtering device for chemical production according to claim 3, characterized in that: The rotating unit comprises a second motor (131), a second gear (132) and a second gear ring (133); the outer cylinder (2) is fixedly connected to at least one second motor (131); the output shaft of the second motor (131) is fixedly connected to the second gear (132); the mounting disc (121) is fixedly connected to the second gear ring (133), and the second gear ring (133) is meshed with the second gear (132).

5. A filtering device for chemical production according to claim 4, characterized in that: All the short rotating shaft rods (124) on the long rotating shaft rod (123) are arranged to be distributed in a spiral array as a whole.

6. A filtering device for chemical production according to claim 5, characterized in that: It also includes a spiral scraper (211); all the rotating shaft short rods (124) are fixedly connected with the spiral scraper (211), and the spiral scraper (211) is in contact with the filter cartridge (3).

7. A filtering device for chemical production according to claim 6, characterized in that: The inner bottom of the outer cylinder (2) is tilted so that the middle part is high and the surrounding parts are low.

8. A filtering device for chemical production according to any one of claims 5 to 7, characterized in that: The invention also comprises an air inlet pipe (311); the filter cartridge (3) is fixedly connected to at least one air inlet pipe (311); the mounting disc (121) is provided with a hollow part 1 (12101), and the hollow part 1 (12101) is in communication with the air inlet pipe (311); each connecting rod 1 (122) is provided with a hollow part 2 (12201), and all the hollow parts 2 (12201) are in communication with the hollow part 1 (12101); the rotating shaft long rod (123) is provided with a hollow part 3 (12301), and the hollow part 3 (12301) is in communication with all the hollow parts 2 (12201); 1) connected; each rotating shaft short rod (124) is provided with a hollow part four (12401), and all hollow parts four (12401) are connected to the hollow part three (12301); each stirring plate (125) is provided with a hollow part five (12501), and each hollow part five (12501) is connected to the corresponding hollow part four (12401); each stirring plate (125) is provided with a plurality of upwardly facing air outlet holes (12502), and each air outlet hole (12502) is connected to the corresponding hollow part five (12501).

9. A filtering device for chemical production according to claim 8, characterized in that: The invention also comprises a power assembly; the rotating shaft long rod (123) is connected to a power assembly for changing the air outlet hole (12502) from being oriented upward to being oriented downward, and the power assembly is connected to the filter cartridge (3) and the rotating shaft short rod (124); the power assembly is composed of a sliding tube (411), a second electric push rod (412), a second connecting rod (413), a mounting plate (414), a rack (415) and a third gear (416); the rotating shaft long rod (123) is slidably connected to the sliding tube (411); the filter cartridge (3) is fixedly connected to at least one The invention discloses a second electric push rod (412); the telescopic part of the second electric push rod (412) is fixedly connected with a second connecting rod (413), and the second connecting rod (413) is rotatably connected with the sliding tube (411); the sliding tube (411) is fixedly connected with a mounting plate (414) matching the number of the rotating shaft short rods (124); each mounting plate (414) is fixedly connected with a rack (415); each rotating shaft short rod (124) is fixedly connected with a third gear (416), and each third gear (416) is meshed with the corresponding rack (415).

10. A filtering device for chemical production according to claim 9, characterized in that: It also includes a pressure-bearing hole disc (417), which is arranged in the second liquid outlet pipe (9), and the pressure-bearing hole disc (417) is in contact with the filter screen in the second liquid outlet pipe (9).

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