CN216223147U

CN216223147U - Filtering device for synthesizing dihydroxy anthraquinone leuco body

Info

Publication number: CN216223147U
Application number: CN202122492214.3U
Authority: CN
Inventors: 刘丹
Original assignee: Loudi Tongzhiyan New Material Technology Co ltd
Current assignee: Loudi Tongzhiyan New Material Technology Co ltd
Priority date: 2021-10-17
Filing date: 2021-10-17
Publication date: 2022-04-08
Anticipated expiration: 2031-10-17

Abstract

The utility model relates to a filter device for synthesizing dihydroxy anthraquinone leuco bodies, which comprises a box body, a primary filter component, a driving component, a stirring component and a secondary filter component, wherein the primary filter component is positioned at the top of one side of the box body, the driving component is positioned at the top of the other side of the box body, the stirring component is positioned in the box body, the input end of the stirring component is connected with the output end of the driving component, the output end of the stirring component is connected with the input end of the primary filter component, and the secondary filter component is positioned below the stirring component. The utility model can carry out primary filtration on the crystal in the crystal feeding process, so that part of impurities on the surface of the crystal are separated from the crystal; the contact area between the crystal and the cleaning water can be increased, and the filtering is convenient; the crystal cleaning device can recycle cleaning water and wash the crystal again, so that the cleanliness of crystal filtration is greatly improved, and energy is saved.

Description

Filtering device for synthesizing dihydroxy anthraquinone leuco body

Technical Field

The utility model relates to the technical field of dihydroxy anthraquinone leuco body production devices, in particular to a filtering device for synthesizing dihydroxy anthraquinone leuco bodies.

Background

The 1, 4-dihydroxy anthraquinone leuco body is an important chemical intermediate, has important significance in the dye industry, and can be widely used as solvent dye, disperse dye, reactive dye and vat dye intermediate.

At present, in the synthesis process of 1, 4-dihydroxy anthraquinone leuco body, the 1, 4-dihydroxy anthraquinone leuco body crystal is often required to be filtered and purified, but a common filtering device in the prior art is insufficient in cleanliness when filtering the 1, 4-dihydroxy anthraquinone leuco body crystal, and can cause waste of a large amount of water resources.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical defects in the prior art, the utility model provides a filter device for synthesizing a dihydroxy anthraquinone leuco body, which can effectively solve the problems in the background technology.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

the embodiment of the utility model discloses a filter device for synthesizing dihydroxy anthraquinone leuco bodies, which comprises a box body, a primary filter component, a driving component, a stirring component and a secondary filter component, wherein the primary filter component is positioned at the top of one side of the box body, the driving component is positioned at the top of the other side of the box body, the stirring component is positioned in the box body, the input end of the stirring component is connected with the output end of the driving component, the output end of the stirring component is connected with the input end of the primary filter component, and the secondary filter component is positioned below the stirring component.

In any of the above schemes, preferably, the top of the box body is provided with a feed inlet and a water inlet, the feed inlet is connected with the output end of the primary filtering component, and the water inlet is connected with a water inlet pipe.

It is preferred in any one of the above schemes, drive assembly includes motor, first belt pulley, second belt pulley, the motor bottom with box top fixed connection, first belt pulley is fixed in the motor output, the second belt pulley is located first belt pulley below, first belt pulley with the second belt pulley passes through the belt and connects, in order to realize passing through the work of motor can drive the second belt pulley rotates.

In any of the above schemes, preferably, the stirring assembly includes a first stirring rod, a second stirring rod, a stirring blade, a third belt pulley, a fourth belt pulley and a fifth belt pulley, the first stirring rod is located inside the box body, two ends of the first stirring rod respectively extend to the outside of the box body, one end of the first stirring rod is sequentially sleeved with the third belt pulley and the second belt pulley, the third belt pulley and the second belt pulley are fixedly connected with the first stirring rod, the other end of the first stirring rod is sleeved with the fifth belt pulley, and the fifth belt pulley is fixedly connected with the first stirring rod; the second stirring rod is located below the first stirring rod, one end of the second stirring rod is rotatably connected with the inside of the box body, the other end of the second stirring rod extends to the outside of the box body and is sleeved with the fourth belt pulley, and the stirring blades are arranged on the first stirring rod and the second stirring rod so as to increase the contact area of crystals and cleaning water.

In any of the above schemes, preferably, the second stirring rod is fixedly connected with the fourth belt pulley, and the fourth belt pulley is connected with the third belt pulley through a belt; in actual work, the second belt pulley can be driven to rotate by the operation of the motor, so that the first stirring rod can be driven to rotate by the rotation of the second belt pulley, and when the first stirring rod rotates, the second stirring rod can be driven to rotate by the cooperation between the third belt pulley and the fourth belt pulley, so that the crystals in the box body can be stirred by the stirring blades on the first stirring rod and the second stirring rod, and the contact area between the crystals and cleaning water is increased.

In any of the above aspects, preferably, the primary filter assembly comprises a first filter tank, a rotating shaft, a sixth belt pulley, a screen plate and a filter plate; the first filter tank is positioned at the top of the box body, an inlet and an outlet are arranged on the first filter tank, the outlet is communicated with the feed inlet, one end of the rotating shaft is positioned in the first filter box and is fixedly connected with fan blades, the other end of the rotating shaft extends to the outside of the first filter tank and is fixedly connected with the sixth belt pulley, the sixth belt pulley is positioned above the fifth belt pulley, and is connected with the fifth belt pulley by a belt, the screen plate is positioned at one side of the fan blade and is fixedly connected with the inner wall of the first filter box, the filter plate is positioned at the other side of the screen plate and is fixedly connected with the inner wall of the first filter box, so that the screen plate and the filter plate form a feeding cavity in the first filter box, and crystals enter the box body through the feeding cavity; in actual work, the second belt pulley can be rotated through the work of the motor, the rotation of the second belt pulley can drive the fifth belt pulley on the first stirring rod to rotate, the rotating shaft can be communicated with the fan blades to rotate through the cooperation between the fifth belt pulley and the sixth belt pulley, when crystals enter the feeding cavity through the inlet, the crystals in the feeding cavity can be subjected to primary filtration through the rotation of the fan blades, impurities on the surfaces of the crystals can be separated from the space between the filter plate and the first filter box, and primary filtration of the crystals is realized.

In any of the above aspects, preferably, the secondary filter assembly comprises a support plate, a spray plate, a first conduit, a spray head, a screen; the support plate is positioned below the second stirring rod and fixedly connected with the inner wall of the box body, the jet plate is positioned below the support plate and fixedly connected with the inner wall of the box body, one end of a first pipeline is communicated with the bottom of the support plate, the other end of the first pipeline penetrates through the jet plate, the jet head is arranged at the bottom of the jet plate, the screen is positioned below the first pipeline and fixedly connected with the inner wall of the box body, the inclination angle of the screen is more than 15 degrees, and the box body is also provided with a discharge hole and a water outlet; in actual work, the crystals and the cleaning water after being stirred and cleaned enter the screen through the first pipeline, the crystals and the cleaning water can be separated through the screen which is obliquely arranged, the crystals are discharged out of the tank through the discharge hole, and the cleaning water is discharged out of the tank through the water outlet.

In any of the above aspects, preferably, the secondary filter assembly further comprises a second pipeline, a second filter tank, a third pipeline, a water pump and a fourth pipeline; one end of the second pipeline is connected with the water outlet, the other end of the second pipeline is connected with the input end of the second filter tank, one end of the third pipeline is connected with the output end of the second filter tank, the other end of the third pipeline is communicated with the bottom of the water pump, one end of the fourth pipeline is communicated with the top of the water pump, and the other end of the fourth pipeline penetrates through the side wall of the tank body and is communicated with the jet plate; in actual work, the separated cleaning water can be transmitted into the second filter tank through the water pump, impurities in the cleaning water are filtered through the second filter tank, the cleaning water has a function of cleaning again, the filtered cleaning water can be conveyed into the jet plate through the water pump and the fourth pipeline, and the filtered cleaning water is jetted to the screen through the jet head, so that crystals on the screen are washed again, and the cleanliness of the crystals is improved.

In any of the above schemes, preferably, a scraper, a sliding rod and a filter screen are arranged in the second filter box, the scraper is located in the second filter box, the scraper is connected with the inside of the second filter box in a sliding manner, one end of the sliding rod is fixedly connected with the scraper, the other end of the sliding rod extends to the outside of the second filter box and is fixedly connected with a pulling block, the filter screen is located above the scraper, and the filter screen is fixedly connected with the inner wall of the second filter box; in actual work, impurities in the cleaning water in the box body can be filtered through the filter screen, so that the cleaning water has the function of cleaning crystals again; but the user hand power draw the piece drive the scraper blade removes, can be right the filtration thing in the second rose box is clear away.

In any of the above schemes, preferably, the first pipeline is provided with an electromagnetic valve, and the first filtering tank and the second filtering tank are both provided with impurity discharge ports, so as to remove the filtered impurities.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the primary filtering component can be used for primary filtering of the crystal in the crystal feeding process, so that part of impurities on the surface of the crystal are separated from the crystal; the contact area of the crystal and the cleaning water can be increased through the stirring assembly, so that the filtering is facilitated; through secondary filter assembly can wash washing water cyclic utilization, wash the crystal once more, improved crystal filterable cleanliness factor greatly, and the energy saving.

Drawings

The drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification.

FIG. 1 is a schematic view showing the overall structure of a filter device for the synthesis of leuco dihydroxyanthraquinone according to the present invention;

FIG. 2 is a schematic view of the structure of the primary filter element of the filter unit for the synthesis of leuco dihydroxyanthraquinone according to the present invention;

FIG. 3 is an enlarged view of a portion of the secondary filter element of the filter apparatus for the synthesis of leuco dihydroxyanthraquinone according to the present invention;

FIG. 4 is a schematic view showing the internal structure of a second filtration tank of the filtration apparatus for the synthesis of a leuco body of dihydroxyanthraquinone according to the present invention.

The reference numbers in the figures illustrate:

1. a box body; 11. a feed inlet; 12. a water inlet; 13. a discharge port; 2. a primary filtration assembly; 21. a first filter tank; 22. a rotating shaft; 23. a sixth belt pulley; 24. a screen plate; 25. a filter plate; 3. a drive assembly; 31. a motor; 32. a first pulley; 33. a second pulley; 4. a stirring assembly; 41. a first stirring rod; 42. a second stirring rod; 43. stirring blades; 44. a third belt pulley; 45. a fourth belt pulley; 46. a fifth belt pulley; 5. a secondary filter assembly; 51. a support plate; 52. a jet plate; 53. a first conduit; 54. an injector head; 55. screening a screen; 56. a second conduit; 57. a second filter tank; 58. a water pump; 59. a fourth conduit; 571. a squeegee; 572. a slide bar; 573. filtering with a screen; 574. pulling the block; 6. and (4) a water inlet pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

For better understanding of the above technical solutions, the technical solutions of the present invention will be described in detail below with reference to the drawings and the detailed description of the present invention.

The utility model provides a filter device for synthesizing dihydroxy anthraquinone leuco bodies, which comprises a box body 1, a primary filter component 2, a drive component 3, a stirring component 4 and a secondary filter component 5, wherein the primary filter component 2 is positioned at the top of one side of the box body 1, the drive component 3 is positioned at the top of the other side of the box body 1, the stirring component 4 is positioned in the box body 1, the input end of the stirring component 4 is connected with the output end of the drive component 3, the output end of the stirring component 4 is connected with the input end of the primary filter component 2, and the secondary filter component 5 is positioned below the stirring component 4, as shown in fig. 1 to 4.

As shown in fig. 1 to 4, a feed inlet 11 and a water inlet 12 are formed in the top of the box body 1, the feed inlet 11 is connected with the output end of the primary filter assembly 2, and the water inlet 12 is connected with a water inlet pipe 6.

As shown in fig. 1 to 4, the driving assembly 3 includes a motor 31, a first belt pulley 32 and a second belt pulley 33, the bottom of the motor 31 is fixedly connected to the top of the box 1, the first belt pulley 32 is fixed to the output end of the motor 31, the second belt pulley 33 is located below the first belt pulley 32, and the first belt pulley 32 is connected to the second belt pulley 33 through a belt, so that the second belt pulley 33 can be driven to rotate by the operation of the motor 31.

As shown in fig. 1 to 4, the stirring assembly 4 includes a first stirring rod 41, a second stirring rod 42, a stirring blade 43, a third belt pulley 44, a fourth belt pulley 45, and a fifth belt pulley 46, the first stirring rod 41 is located inside the box 1, two ends of the first stirring rod 41 respectively extend to the outside of the box 1, one end of the first stirring rod 41 is sequentially sleeved with the third belt pulley 44 and the second belt pulley 32, the third belt pulley 44 and the second belt pulley 32 are fixedly connected to the first stirring rod 41, the other end of the first stirring rod 41 is sleeved with the fifth belt pulley 46, and the fifth belt pulley 46 is fixedly connected to the first stirring rod 41; the second stirring rod 42 is located below the first stirring rod 41, one end of the second stirring rod 42 is rotatably connected with the inside of the box body 1, the other end of the second stirring rod 42 extends to the outside of the box body 1 and is sleeved with the fourth belt pulley 45, and the stirring blade 43 is arranged on the first stirring rod 41 and the second stirring rod 42 to increase the contact area between the crystal and the cleaning water.

The second stirring rod 42 is fixedly connected with the fourth belt pulley 45, and the fourth belt pulley 45 is connected with the third belt pulley 44 through a belt; in actual work, the second belt pulley 33 can be driven to rotate by the operation of the motor 31, so that the first stirring rod 41 can be driven to rotate by the rotation of the second belt pulley 33, and when the first stirring rod 41 rotates, the second stirring rod 42 can be driven to rotate by the cooperation between the third belt pulley 44 and the fourth belt pulley 45, so that the crystals in the box body 1 can be stirred by the stirring blades 43 on the first stirring rod 41 and the second stirring rod 42, and the contact area between the crystals and cleaning water is increased.

As shown in fig. 1 to 4, the primary filter assembly 2 includes a first filter tank 21, a rotation shaft 22, a sixth pulley 23, a mesh plate 24, a filter plate 25; the first filtering box 21 is positioned at the top of the box body 1, the first filtering box 21 is provided with an inlet and an outlet, the outlet is communicated with the feed inlet 11, one end of the rotating shaft 22 is positioned inside the first filtering box 21 and fixedly connected with fan blades, the other end of the rotating shaft 22 extends to the outside of the first filtering box 21 and fixedly connected with the sixth belt pulley 23, the sixth belt pulley 23 is positioned above the fifth belt pulley 46 and is connected with the fifth belt pulley 46 through a belt, the screen plate 24 is positioned at one side of the fan blades, the screen plate 24 is fixedly connected with the inner wall of the first filtering box 21, the filter plate 25 is positioned at the other side of the screen plate 24, and the filter plate 25 is fixedly connected with the inner wall of the first filtering box 21, so that the screen plate 24 and the filter plate 25 form a feed cavity in the first filtering box 21, the crystal enters the box body 1 through the feeding cavity; in actual work, the second belt pulley 33 can be rotated by the operation of the motor 31, and further the rotation of the second belt pulley 33 can drive the fifth belt pulley 46 on the first stirring rod 41 to rotate, and the rotation shaft 22 can be communicated with the fan blades to rotate by the cooperation between the fifth belt pulley 46 and the sixth belt pulley 23, when crystals enter the feeding cavity through the inlet, the rotation of the fan blades can perform primary filtration on the crystals in the feeding cavity, so that impurities on the surfaces of the crystals are separated from the space between the filter plate 25 and the first filter box 21, and primary filtration on the crystals is realized.

As shown in fig. 1 to 4, the secondary filter assembly 5 includes a support plate 51, a spray plate 52, a first duct 53, a spray head 54, a screen 55; the supporting plate 52 is located below the second stirring rod 42, the supporting plate 52 is fixedly connected with the inner wall of the box body 1, the spraying plate 52 is located below the supporting plate 52, the spraying plate 52 is fixedly connected with the inner wall of the box body 1, one end of the first pipeline 53 is communicated with the bottom of the supporting plate 51, the other end of the first pipeline 53 penetrates through the spraying plate 52, the spraying head 54 is arranged at the bottom of the spraying plate 52, the screen 55 is located below the first pipeline 53, and the screen 55 is fixedly connected with the inner wall of the box body 1, wherein the inclination angle of the screen 55 is greater than 15 degrees, and the box body 1 is further provided with a discharge hole 13 and a water outlet; in actual work, the stirred and cleaned crystals and the cleaning water enter the screen through the first pipeline, the crystals and the cleaning water can be separated through the obliquely arranged screen, the crystals are discharged out of the box body 1 through the discharge hole 13, and the cleaning water is discharged out of the box body 1 through the water outlet.

As shown in fig. 1 to 4, the secondary filter assembly 5 further comprises a second pipe 56, a second filter tank 57, a third pipe, a water pump 58 and a fourth pipe 59; one end of the second pipeline 56 is connected with the water outlet, the other end of the second pipeline 56 is connected with the input end of the second filter tank 57, one end of the third pipeline is connected with the output end of the second filter tank 57, the other end of the third pipeline is communicated with the bottom of the water pump 58, one end of the fourth pipeline 59 is communicated with the top of the water pump 58, and the other end of the fourth pipeline 59 penetrates through the side wall of the box body 1 and is communicated with the jet plate 52; in actual operation, the separated washing water can be transferred into the second filtering tank 57 by the water pump 58, impurities in the washing water are filtered by the second filtering tank 57, so that the washing water has a function of re-washing, the filtered washing water can be transferred into the spraying plate 52 by the water pump 58 and the fourth pipeline 59, and the filtered washing water is sprayed to the screen 55 by the spraying head 54, so that crystals on the screen 55 are washed again, and the cleanliness of the crystals is improved.

As shown in fig. 1 to 4, a scraper 571, a sliding rod 572 and a screen 573 are arranged in the second filter tank 57, the scraper 571 is located in the second filter tank 57, the scraper 571 is slidably connected with the inside of the second filter tank 57, one end of the sliding rod 572 is fixedly connected with the scraper 571, the other end of the sliding rod 572 extends to the outside of the second filter tank 57 and is fixedly connected with a pulling block 574, the screen 573 is located above the scraper 571, and the screen 573 is fixedly connected with the inner wall of the second filter tank 57; in actual operation, the filter mesh 573 can filter impurities in the cleaning water in the box body 1, so that the cleaning water has the function of cleaning crystals again; the user can pull the pulling block 574 by hand to drive the scraping plate 571 to move, so that the filtered substances in the second filtering tank 57 can be removed.

Wherein, be provided with the solenoid valve on the first pipeline 23, all be provided with the impurity discharge port on first rose box 21 and the second rose box 57 to the realization is got rid of the impurity after filtering.

Compared with the prior art, the utility model has the beneficial effects that:

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filter equipment for synthesizing dihydroxy anthraquinone leuco is characterized in that: including box (1), elementary filtering component (2), drive assembly (3), stirring subassembly (4), secondary filtering component (5), elementary filtering component (2) are located one side top of box (1), drive assembly (3) are located the opposite side top of box (1), stirring subassembly (4) are located inside box (1), stirring subassembly (4) input with drive assembly (3) output is connected, stirring subassembly (4) output with elementary filtering component (2) input is connected, secondary filtering component (5) are located stirring subassembly (4) below.

2. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 1, wherein: feed inlet (11) and water inlet (12) have been seted up at box (1) top, feed inlet (11) with primary filter assembly (2) output is connected, be connected with inlet tube (6) on water inlet (12).

3. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 2, wherein: drive assembly (3) include motor (31), first belt pulley (32), second belt pulley (33), motor (31) bottom with box (1) top fixed connection, first belt pulley (32) are fixed in motor (31) output, second belt pulley (33) are located first belt pulley (32) below, first belt pulley (32) with second belt pulley (33) pass through the belt and connect.

4. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 3, wherein: the stirring assembly (4) comprises a first stirring rod (41), a second stirring rod (42), a stirring blade (43), a third belt pulley (44), a fourth belt pulley (45) and a fifth belt pulley (46), wherein the first stirring rod (41) is positioned inside the box body (1), two ends of the first stirring rod (41) respectively extend to the outside of the box body (1), one end of the first stirring rod (41) is sequentially sleeved with the third belt pulley (44) and the second belt pulley (32), the third belt pulley (44) and the second belt pulley (32) are fixedly connected with the first stirring rod (41), the other end of the first stirring rod (41) is sleeved with the fifth belt pulley (46), and the fifth belt pulley (46) is fixedly connected with the first stirring rod (41); second puddler (42) are located first puddler (41) below, just second puddler (42) one end with box (1) inside rotation is connected, second puddler (42) other end extends to box (1) outside and cover are equipped with fourth belt pulley (45), stirring leaf (43) set up in first puddler (41) with on second puddler (42).

5. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 4, wherein: the second stirring rod (42) is fixedly connected with a fourth belt pulley (45), and the fourth belt pulley (45) is connected with the third belt pulley (44) through a belt.

6. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 5, wherein: the primary filtering component (2) comprises a first filtering box (21), a rotating shaft (22), a sixth belt pulley (23), a screen plate (24) and a filtering plate (25); the first filter box (21) is positioned at the top of the box body (1), the first filter box (21) is provided with an inlet and an outlet, the outlet is communicated with the feed inlet (11), one end of the rotating shaft (22) is positioned inside the first filter box (21) and is fixedly connected with fan blades, the other end of the rotating shaft (22) extends to the outside of the first filter box (21) and is fixedly connected with the sixth belt pulley (23), the sixth belt pulley (23) is positioned above the fifth belt pulley (46) and is connected with the fifth belt pulley (46) by a belt, the screen plate (24) is positioned at one side of the fan blades, the screen plate (24) is fixedly connected with the inner wall of the first filter box (21), the filter plate (25) is positioned at the other side of the screen plate (24), and the filter plate (25) is fixedly connected with the inner wall of the first filter box (21), so that the screen plate (24) and the filter plate (25) form a feeding cavity in the first filter box (21), and crystals enter the box body (1) through the feeding cavity.

7. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 6, wherein: the secondary filter assembly (5) comprises a support plate (51), a spray plate (52), a first pipeline (53), a spray head (54) and a screen (55); the support plate (52) is located below the second stirring rod (42), the support plate (52) is fixedly connected with the inner wall of the box body (1), the jet plate (52) is located below the support plate (52), the jet plate (52) is fixedly connected with the inner wall of the box body (1), one end of a first pipeline (53) is communicated with the bottom of the support plate (51), the other end of the first pipeline (53) penetrates through the jet plate (52), the jet head (54) is arranged at the bottom of the jet plate (52), the screen (55) is located below the first pipeline (53), and the screen (55) is fixedly connected with the inner wall of the box body (1).

8. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 7, wherein: the inclination angle of the screen (55) is larger than 15 degrees, and a discharge hole (13) and a water outlet are further formed in the box body (1).

9. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 8, wherein: the secondary filtering assembly (5) further comprises a second pipe (56), a second filtering tank (57), a third pipe, a water pump (58) and a fourth pipe (59); one end of the second pipeline (56) is connected with the water outlet, the other end of the second pipeline (56) is connected with the input end of the second filtering box (57), one end of the third pipeline is connected with the output end of the second filtering box (57), the other end of the third pipeline is communicated with the bottom of the water pump (58), one end of the fourth pipeline (59) is communicated with the top of the water pump (58), and the other end of the fourth pipeline (59) penetrates through the side wall of the box body (1) and is communicated with the jet plate (52).

10. The filter device for the synthesis of a leuco dihydroxy anthraquinone according to claim 9, wherein: a scraper (571), a sliding rod (572) and a filter screen (573) are arranged in the second filter box (57), the scraper (571) is located in the second filter box (57), the scraper (571) is connected with the inside of the second filter box (57) in a sliding mode, one end of the sliding rod (572) is fixedly connected with the scraper (571), the other end of the sliding rod (572) extends to the outside of the second filter box (57) and is fixedly connected with a pull block (574), the filter screen (573) is located above the scraper (571), and the filter screen (573) is fixedly connected with the inner wall of the second filter box (57).