A separation device and method for producing microbial inoculants

Abstract

The present invention discloses a separation device and method for producing microbial inoculants, and relates to the technical field of microbial inoculant production. The present invention comprises a separation cylinder, wherein the top of the separation cylinder is threadedly connected to an upper cover, the bottom of the separation cylinder is threadedly connected to a lower cover, an ultrafiltration element is fixedly installed inside the separation cylinder, a spacer ring is rotatably installed on the top of the ultrafiltration element, a plurality of groups of separation holes are provided in an annular shape inside the spacer ring, a bottom ring is fixedly connected to the bottom of the ultrafiltration element, a plurality of groups of water holes are provided in an annular shape inside the bottom ring, and a coarse filter cylinder is threadedly connected to the top of the ultrafiltration element. The present invention integrates the ultrafiltration element and the coarse filter cylinder, and can use a set of devices to perform coarse filtration and fine filtration on the inoculant, with a compact structure and convenient assembly. At the same time, the ultrafiltration element backwashing structure is used to backwash the ultrafiltration element and the coarse filter cylinder at the same time, with a compact structure and low filtration cost.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial agent production, and in particular to a separation device and method for microbial agent production. Background Art

[0002] Microbial agent refers to a live bacterial preparation made by using porous substances as adsorbents to adsorb the fermentation liquid of the target microorganisms after industrial production and expansion. This agent is used for seed dressing or root dipping, and has the functions of directly or indirectly improving the soil, maintaining the balance of rhizosphere microbial flora and degrading toxic substances. In the process of microbial agent production, it is necessary to separate the solid and liquid, and ultrafiltration membrane filtration is a more commonly used method.

[0003] Since the pore size of the ultrafiltration membrane is small, it can only filter smaller impurities, and larger impurities are prone to blockage. Therefore, additional equipment is needed for coarse filtration before ultrafiltration of the bacterial agent, and the coarse filtration system also needs to be separately equipped with additional cleaning equipment for cleaning, resulting in high filtration costs and large space occupied by the filtration equipment. At the same time, the existing ultrafiltration membrane has a simple structure, mainly consisting of an outer shell and ultrafiltration membrane filaments. It can only filter on one side and has a short service life. Summary of the invention

[0004] The purpose of the present invention is to solve the above problems and provide a separation device and method for producing microbial inoculants.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0006] A separation device for producing a microbial inoculant comprises a separation cylinder, wherein the top of the separation cylinder is threadedly connected to an upper cover, a water inlet 1 is arranged on the left side of the upper cover, the bottom of the separation cylinder is threadedly connected to a lower cover, a water inlet 3 is arranged on the left side of the lower cover, a water inlet 4 is arranged inside the lower cover, an ultrafiltration element is fixedly installed inside the separation cylinder, a spacer ring is rotatably installed on the top of the ultrafiltration element, a plurality of groups of separation holes are arranged in an annular shape inside the spacer ring, a bottom ring is fixedly connected to the bottom of the ultrafiltration element, a plurality of groups of water holes are arranged in an annular shape inside the bottom ring, the outer diameters of the bottom ring and the spacer ring are the same as the inner diameter of the separation cylinder, and a coarse filter cylinder is threadedly connected to the top of the ultrafiltration element;

[0007] An inner rotating core is rotatably installed in the inner sealing of the upper cover, a bottom cavity is opened at the bottom of the inner rotating core, a water outlet 2 is arranged at the top of the bottom cavity, a switching plug is slidably connected to the inner sealing of the bottom cavity, the inner diameter of the bottom cavity is the same as the inner diameter of the coarse filter cartridge, a tension spring is arranged between the switching plug and the top of the bottom cavity, a cleaning inner rod is arranged on the top of the switching plug, the inner sealing of the inner rotating core is slidably connected to multiple groups of cleaning outer rods, the cleaning outer rods are arranged corresponding to the separation holes, the bottom of the cleaning outer rod is threadedly connected to a partition plug, the partition plug is seal-inserted in the separation hole, and the cleaning outer rod is connected to the cleaning inner rod through a connecting ring.

[0008] Furthermore, a driving motor is fixedly mounted on the right side of the upper cover, a driving wheel is fixedly mounted on the output end of the driving motor, an outer wheel ring is fixedly mounted on the outer side of the inner rotating core, and the outer wheel ring is meshed with the driving wheel.

[0009] Furthermore, an inner sealing ring is provided on the inner wall of the separation cylinder, and when the spacer ring is pressed against the inner sealing ring, the separation hole is not blocked by the inner sealing ring.

[0010] Furthermore, a sealing groove is provided on the top of the coarse filter cartridge, and the inner rotating core is inserted into the sealing groove.

[0011] Furthermore, the switching plug is composed of an inner frame and an outer silicone sleeve.

[0012] Furthermore, an outer side of the bottom ring is provided with an external thread, and the bottom ring is threadedly connected in the separation cylinder via the external thread.

[0013] Furthermore, a plurality of sealing sliding holes are provided inside the inner rotating core, the cleaning inner rod and the cleaning outer rod are both composed of a sliding rod and bristles, the sliding rod is sealingly slidably connected in the sealing sliding holes, and the cleaning bristles are made of nylon.

[0014] Furthermore, outer sides of the upper cover and the lower cover are both provided with annular grooves.

[0015] Furthermore, an electric telescopic rod is fixedly installed on the top of the inner rotating core, and the telescopic end of the electric telescopic rod is connected to the connecting ring.

[0016] A separation method for producing a microbial agent comprises the following steps:

[0017] S1. Replace the existing ultrafiltration membrane with a separation device and install it on the filtration system;

[0018] S2, internal filtration: The septum is located in the separation hole, the original liquid enters the separation cylinder through the water inlet 1, filters the larger solid particles through the coarse filter cylinder, and then enters the ultrafiltration element, and is finely filtered from the inside to the outside through the filter surface of the ultrafiltration element, and finally discharged through the water hole and water inlet 3;

[0019] S3, internal backwashing: after a period of time, the flushing liquid enters through the water inlet 3 and the water inlet 4 at the same time, and performs two-way flushing on the filter surface inside the ultrafiltration element, and then enters the coarse filter cartridge through the ultrafiltration element to backwash the coarse filter cartridge, and the flushing liquid is discharged through the water inlet 1;

[0020] S4, external filtration: When the filtering capacity of the inner filter surface of the ultrafiltration element drops significantly, the raw liquid enters through the water inlet 2, and the raw liquid pushes the switching plug down. At the same time, the partition plug moves away from the separation hole. The switching plug allows the raw liquid to pass through the coarse filter cartridge from the inside to the outside, and the larger solid particle impurities are filtered through the coarse filter cartridge, and then enter the bottom through the separation hole, and then pass through the outer filter surface of the ultrafiltration element from the outside to the inside for fine filtration, and then be discharged from the water inlet 4;

[0021] S5, external flushing: After a period of time, the flushing liquid enters through the water inlet four to backwash the ultrafiltration element, and then flushes the coarse filter cartridge from the outside of the coarse filter cartridge, and the flushing water is discharged through the water inlet two.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention integrates the ultrafiltration element and the coarse filter cartridge into an integrated design, and can use a set of devices to perform coarse filtration and fine filtration on the bacterial agent. The structure is compact and easy to assemble. At the same time, the ultrafiltration element backwashing structure is used to backwash the ultrafiltration element and the coarse filter cartridge at the same time. The structure is compact and the filtration cost is low.

[0024] 2. The present invention can change the filtering water path of the device by setting the switching plug and the partition plug, and both sides of the coarse filter cartridge and the ultrafiltration element can be filtered, which greatly prolongs the service life of the device.

[0025] 3. The flushing liquid enters through the water inlet three and the water inlet four at the same time. The flushing liquid of the water inlet three enters the interior from the outer surface of the ultrafiltration element for backwashing, and the flushing liquid of the water inlet four directly flushes the inner surface of the ultrafiltration element. Through two-way flushing, the cleaning efficiency can be greatly improved.

[0026] 4. The present invention can brush the filtering surface of the coarse filter cartridge by setting the cleaning inner rod and the cleaning outer rod to prevent the coarse filter cartridge from being blocked, which can greatly improve the filtering efficiency. At the same time, the water flow on the outer surface of the coarse filter cartridge and the ultrafiltration element can be stirred during backwashing, which can greatly improve the backwashing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0029] Figure 3 It is an exploded view of the present invention;

[0030] Figure 4It is a schematic diagram of the cross-sectional structure of the separation cylinder of the present invention;

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the upper cover of the present invention;

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the lower cover of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the ultrafiltration element and the coarse filter cartridge of the present invention;

[0034] Figure 8 It is a schematic diagram of the cross-sectional structure of the inner rotating core of the present invention.

[0035] Figure numerals: 1. separation cylinder; 11. inner sealing ring; 2. upper cover; 21. water outlet one; 22. driving motor; 23. driving wheel; 3. lower cover; 31. water outlet three; 32. water outlet four; 4. ultrafiltration element; 41. spacer ring; 42. partition hole; 43. bottom ring; 44. water hole; 5. coarse filter cylinder; 51. sealing groove; 6. inner rotating core; 61. outer wheel ring; 62. bottom cavity; 63. water outlet two; 64. switching plug; 65. tension spring; 66. cleaning inner rod; 67. cleaning outer rod; 68. spacer plug; 69. connecting ring. DETAILED DESCRIPTION

[0036] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] Embodiment 1, as Figure 1-Figure 8 As shown, a separation device for producing a microbial inoculant comprises a separation cylinder 1, an upper cover 2 is threadedly connected to the top of the separation cylinder 1, a water inlet 21 is arranged on the left side of the upper cover 2, a lower cover 3 is threadedly connected to the bottom of the separation cylinder 1, a water inlet 3 31 is arranged on the left side of the lower cover 3, a water inlet 4 32 is arranged inside the lower cover 3, an ultrafiltration element 4 is fixedly installed inside the separation cylinder 1, a spacer ring 41 is rotatably installed on the top of the ultrafiltration element 4, a plurality of groups of separation holes 42 are arranged in an annular shape inside the spacer ring 41, a bottom ring 43 is fixedly connected to the bottom of the ultrafiltration element 4, a plurality of groups of water holes 44 are arranged in an annular shape inside the bottom ring 43, the outer diameters of the bottom ring 43 and the spacer ring 41 are the same as the inner diameter of the separation cylinder 1, and a coarse filter cylinder 5 is threadedly connected to the top of the ultrafiltration element 4;

[0038] An inner rotating core 6 is rotatably installed in the inner sealing of the upper cover 2, a bottom cavity 62 is opened at the bottom of the inner rotating core 6, a water inlet 63 is arranged at the top of the bottom cavity 62, a switching plug 64 is slidably connected to the inner sealing of the bottom cavity 62, the inner diameter of the bottom cavity 62 is the same as the inner diameter of the coarse filter cartridge 5, a tension spring 65 is arranged between the switching plug 64 and the top of the bottom cavity 62, a cleaning inner rod 66 is arranged at the top of the switching plug 64, the inner sealing of the inner rotating core 6 is slidably connected to multiple groups of cleaning outer rods 67, the cleaning outer rods 67 are arranged corresponding to the partition holes 42, the bottom of the cleaning outer rods 67 are threadedly connected to the partition plugs 68, the partition plugs 68 are sealingly inserted in the partition holes 42, and the cleaning outer rods 67 are connected to the cleaning inner rods 66 through a connecting ring 69.

[0039] Assembly: The coarse filter cartridge 5 is threadedly connected to the top of the ultrafiltration cartridge 4 to form a filter cartridge. The filter cartridge is inserted into the separation cartridge 1, and then the lower cover 3 is tightened. Next, the septum plug 68 is inserted into the separation hole 42, and the upper cover 2 is tightened to complete the assembly. The assembled device can be used to replace the existing ultrafiltration membrane without making other changes. It is easy to use.

[0040] Use the inner surface of the ultrafiltration element 4 for filtration. At this time, the partition plug 68 is located in the partition hole 42, the water inlet 4 32 is closed, and the switching plug 64 is located above the coarse filter cartridge 5, and the bottom cavity 62 is blocked, so that the water inlet 2 63 is closed, and the raw liquid enters the separation cartridge 1 through the water inlet 1 21, and is filtered through the coarse filter cartridge 5 for filtering larger solid particle impurities, and then enters the ultrafiltration element 4, and is finely filtered from the inside to the outside through the inner filter surface of the ultrafiltration element 4, and finally discharged through the water hole 44 and the water inlet 3 31. Since the impurities filtered by the coarse filter cartridge 5 are large, they are easily blocked before the ultrafiltration element 4, so the inner rotating core 6 rotates slowly during filtration, and the inner rotating core 6 drives the cleaning outer rod 67 to rotate, and the cleaning outer rod 67 synchronously brushes the coarse filter cartridge 5, which can greatly improve the single use time of the device;

[0041] After a period of time, backwashing is performed. At this time, selective flushing can be performed according to actual conditions. The flushing liquid enters through the water inlet three 31 and the water inlet four 32 at the same time. The flushing liquid of the water inlet three 31 enters the interior from the outer surface of the ultrafiltration element 4 for backwashing. The flushing liquid of the water inlet four 32 directly flushes the inner surface of the ultrafiltration element 4. Through two-way flushing, the cleaning efficiency can be greatly improved. The flushed water enters the coarse filter cartridge 5, and the coarse filter cartridge 5 is backwashed from the inside to the outside. The flushing liquid is discharged through the water inlet one 21, and at the same time, the rotation of the inner rotating core 6 is controlled. The inner rotating core 6 drives the cleaning outer rod 67 to rotate relative to the coarse filter cartridge 5. The cleaning outer rod 67 stirs the water flow on the outer surface of the coarse filter cartridge 5, which can improve the flushing efficiency.

[0042] When the filtration efficiency of the inner surface of the ultrafiltration element 4 is greatly reduced, the water inlet 1 21 and the water inlet 3 31 are closed. It should be noted that the ultrafiltration membrane filtration requires a certain pressure on the raw liquid, and the pressure is much greater than the elastic force of the tension spring 65. Therefore, when the raw liquid enters through the water inlet 2 63, the source liquid pushes the switching plug 64 to quickly drop to the bottom of the coarse filter cartridge 5, blocking the top of the ultrafiltration element 4. In this process, a small amount of coarse filtered liquid may enter the ultrafiltration element 4. Therefore, when using the device of this embodiment, it is necessary to release some filtered liquid in advance, collect it and filter it again, and switch the plug 64. 4 descends, driving the cleaning inner rod 66 to descend, and the cleaning inner rod 66 is inserted into the coarse filter cartridge 5. At the same time, the cleaning inner rod 66 drives the cleaning outer rod 67 to descend through the connecting ring 69, and the cleaning outer rod 67 drives the partition plug 68 to descend. The partition plug 68 opens the partition hole 42, and the raw liquid enters the coarse filter cartridge 5 from the water inlet 2 63, passes through the coarse filter cartridge 5 from the inside to the outside, and is filtered by the inner surface of the coarse filter cartridge 5. The larger solid particle impurities are filtered by the coarse filter cartridge 5, and then enter the bottom through the partition hole 42, and then pass through the outer filter surface of the ultrafiltration element 4 from the outside to the inside for fine filtration, and then are discharged from the water inlet 4 32;

[0043] After a period of time, backwashing is performed. At this time, the water inlet 2 63 stops taking in water. The connecting ring 69 needs to be fixed, and the limiting switch plug 64 is reset. The flushing liquid enters through the water inlet 3 31 and the water inlet 4 32 to perform two-way flushing on the ultrafiltration element 4. Then, the flushing water passes through the partition hole 42 and the inside of the ultrafiltration element 4 to flush the coarse filter cartridge 5 from the outside of the coarse filter cartridge 5. The flushed waste liquid is discharged from the water inlet 2 63. While backwashing, the inner rotating core 6 is controlled to rotate. The inner rotating core 6 drives the cleaning inner rod 66 to rotate relative to the coarse filter cartridge 5, and the inner rotating core 6 drives the cleaning outer rod 67 to rotate relative to the ultrafiltration element 4. The flushing efficiency can be improved by stirring the water flow.

[0044] Furthermore, multiple sets of sealing sliding holes are opened inside the inner rotating core 6. The cleaning inner rod 66 and the cleaning outer rod 67 are both composed of sliding rods and bristles. The sliding rods are sealingly slidably connected in the sealing sliding holes. The cleaning bristles are made of nylon to prevent the bristles from damaging the coarse filter cartridge 5 and the ultrafiltration element 4.

[0045] Furthermore, the outer sides of the upper cover 2 and the lower cover 3 are both provided with annular grooves for easy installation.

[0046] Embodiment 2, on the basis of the above embodiment, further includes: a driving motor 22 is fixedly installed on the right side of the upper cover 2, a driving wheel 23 is fixedly installed on the output end of the driving motor 22, an outer ring 61 is fixedly installed on the outer side of the inner rotating core 6, the outer ring 61 is meshed with the driving wheel 23, and the driving motor 22 is energized and rotated, the driving motor 22 drives the driving wheel 23 to rotate, and the driving wheel 23 drives the inner rotating core 6 to rotate. Since the inner rotating core 6 only needs to rotate at a low speed, the driving motor 22 does not need a large power, and a small-volume brushless motor can be used, and the structure is compact.

[0047] Embodiment 3, based on the above embodiment, further includes that an inner sealing ring 11 is provided on the inner wall of the separation cylinder 1 , and when the spacer ring 41 presses against the inner sealing ring 11 , the separation hole 42 is not blocked by the inner sealing ring 11 .

[0048] Through the setting of the inner sealing ring 11, when installing the ultrafiltration element 4, the coarse filter cartridge 5 can just be pressed against the inner sealing ring 11 for installation and positioning. At the same time, when the cleaning outer rod 67 drives the spacer ring 41 to rotate through the spacer plug 68, the inner sealing ring 11 can improve the sealing between the spacer ring 41 and the inner wall of the separation cartridge 1.

[0049] Furthermore, a sealing groove 51 is provided at the top of the coarse filter cartridge 5 , and the inner rotating core 6 is inserted into the sealing groove 51 , so as to improve the sealing performance between the inner rotating core 6 and the coarse filter cartridge 5 .

[0050] Embodiment 4, based on the above embodiment, further includes that the switching plug 64 is composed of an inner frame and an outer silicone sleeve, with stable transmission and good sealing effect.

[0051] Embodiment 5, based on the above embodiment, further includes that the outer side of the bottom ring 43 is provided with an external thread, and the bottom ring 43 is threadedly connected in the separation cylinder 1 through the external thread, so as to facilitate the installation of the ultrafiltration element 4 and the coarse filter cylinder 5.

[0052] Embodiment 6, based on the above embodiment, further includes: an electric telescopic rod is fixedly installed on the top of the inner rotating core 6, and the telescopic end of the electric telescopic rod is connected to the connecting ring 69.

[0053] Compared with the first embodiment, although this embodiment adds a control source and increases the cost, when switching, water is not introduced first. The electric telescopic rod is directly used to drive the connecting ring 69 to descend, and the connecting ring 69 drives the cleaning inner rod 66 to descend. The cleaning inner rod 66 drives the switching plug 64 to descend. The switching plug 64 blocks the top of the ultrafiltration element 4. At this time, if liquid is introduced again, there will be no leakage. At the same time, during backwashing, there is no need to manually limit the connecting ring 69, and the operation is more convenient.

[0054] Embodiment 7, a separation method for producing a microbial agent, comprising the following steps:

[0055] S1. Replace the existing ultrafiltration membrane with a separation device and install it on the filtration system;

[0056] S2, internal filtration: the septum plug 68 is located in the partition hole 42, the raw liquid enters the separation cylinder 1 through the water inlet 21, filters the larger solid particles through the coarse filter cylinder 5, and then enters the ultrafiltration element 4, and is finely filtered from the inside to the outside through the filter surface of the ultrafiltration element 4, and finally discharged through the water hole 44 and the water inlet 31;

[0057] S3, internal backwashing: after a period of time, the flushing liquid enters through the water inlet 31 and the water inlet 4 32 at the same time, and performs bidirectional flushing on the inner filter surface of the ultrafiltration element 4, and then enters the coarse filter cartridge 5 through the ultrafiltration element 4 to backwash the coarse filter cartridge 5, and the flushing liquid is discharged through the water inlet 1 21;

[0058] S4, external filtration: When the filtering capacity of the inner filtering surface of the ultrafiltration element 4 is greatly reduced, the raw liquid enters through the water inlet 2 63, and the raw liquid pushes the switching plug 64 down. At the same time, the partition plug 68 is away from the partition hole 42. The switching plug 64 allows the raw liquid to pass through the coarse filter cartridge 5 from the inside to the outside, and the larger solid particle impurities are filtered through the coarse filter cartridge 5, and then enter the bottom through the partition hole 42, and then pass through the outer filtering surface of the ultrafiltration element 4 from the outside to the inside for fine filtration, and then be discharged from the water inlet 4 32;

[0059] S5, external flushing: after a period of time, the flushing liquid enters through the water inlet four 32 to backwash the ultrafiltration element 4, and then flushes the coarse filter cartridge 5 from the outside of the coarse filter cartridge 5, and the flushing water is discharged through the water inlet two 63.

[0060] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A separation device for producing a microbial agent, comprising a separation cylinder (1), characterized in that: The top of the separation cylinder (1) is threadedly connected to an upper cover (2), a water inlet 1 (21) is provided on the left side of the upper cover (2), the bottom of the separation cylinder (1) is threadedly connected to a lower cover (3), a water inlet 3 (31) is provided on the left side of the lower cover (3), and a water inlet 4 (32) is provided inside the lower cover (3), an ultrafiltration element (4) is fixedly installed inside the separation cylinder (1), a spacer ring (41) is rotatably installed on the top of the ultrafiltration element (4), a plurality of groups of separation holes (42) are provided in an annular shape inside the spacer ring (41), a bottom ring (43) is fixedly connected to the bottom of the ultrafiltration element (4), a plurality of groups of water holes (44) are provided in an annular shape inside the bottom ring (43), the outer diameters of the bottom ring (43) and the spacer ring (41) are the same as the inner diameter of the separation cylinder (1), and a coarse filter cylinder (5) is threadedly connected to the top of the ultrafiltration element (4); An inner rotating core (6) is rotatably mounted inside the upper cover (2), a bottom cavity (62) is provided at the bottom of the inner rotating core (6), a water inlet (63) is provided at the top of the bottom cavity (62), a switching plug (64) is slidably connected to the inside of the bottom cavity (62), the inner diameter of the bottom cavity (62) is the same as the inner diameter of the coarse filter cartridge (5), a tension spring (65) is provided between the switching plug (64) and the top of the bottom cavity (62), a cleaning inner rod (66) is provided at the top of the switching plug (64), a plurality of groups of cleaning outer rods (67) are slidably connected to the inside of the inner rotating core (6), the cleaning outer rods (67) are correspondingly arranged to the partition holes (42), a partition plug (68) is threadedly connected to the bottom of the cleaning outer rod (67), the partition plug (68) is sealingly inserted in the partition hole (42), and the cleaning outer rod (67) is connected to the cleaning inner rod (66) via a connecting ring (69); A driving motor (22) is fixedly mounted on the right side of the upper cover (2), a driving wheel (23) is fixedly mounted on the output end of the driving motor (22), an outer wheel ring (61) is fixedly mounted on the outer side of the inner rotating core (6), and the outer wheel ring (61) is meshed with the driving wheel (23).

2. A separation device for producing a microbial agent according to claim 1, characterized in that: The inner wall of the separation cylinder (1) is provided with an inner sealing ring (11), and when the spacer ring (41) is pressed against the inner sealing ring (11), the separation hole (42) is not blocked by the inner sealing ring (11).

3. A separation device for producing a microbial agent according to claim 2, characterized in that: A sealing groove (51) is provided at the top of the coarse filter cartridge (5), and the inner rotating core (6) is inserted into the sealing groove (51).

4. A separation device for producing a microbial agent according to claim 1, characterized in that: The switching plug (64) consists of an inner frame and an outer silicone sleeve.

5. A separation device for producing a microbial agent according to claim 1, characterized in that: The outer side of the bottom ring (43) is provided with an external thread, and the bottom ring (43) is threadedly connected in the separation cylinder (1) via the external thread.

6. A separation device for producing a microbial agent according to claim 1, characterized in that: The inner rotating core (6) has a plurality of sealing sliding holes formed inside. The cleaning inner rod (66) and the cleaning outer rod (67) are both composed of a sliding rod and bristles. The sliding rod is sealingly slidably connected in the sealing sliding holes. The cleaning bristles are made of nylon.

7. A separation device for producing a microbial agent according to claim 1, characterized in that: The outer sides of the upper cover (2) and the lower cover (3) are both provided with an annular groove.

8. A separation device for producing a microbial agent according to claim 1, characterized in that: An electric telescopic rod is fixedly mounted on the top of the inner rotating core (6), and the telescopic end of the electric telescopic rod is connected to the connecting ring (69).

9. A separation method for producing a microbial agent, using a separation device for producing a microbial agent as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Replace the existing ultrafiltration membrane with a separation device and install it on the filtration system; S2, internal filtration: the septum plug (68) is located in the partition hole (42), the raw liquid enters the separation cylinder (1) through the water inlet 1 (21), is filtered through the coarse filter cylinder (5) to remove larger solid particles, and then enters the ultrafiltration element (4), is finely filtered from the inside to the outside through the inner filter surface of the ultrafiltration element (4), and is finally discharged through the water hole (44) and the water inlet 3 (31); S3, internal backwashing: after a period of time, the flushing liquid enters through the water inlet three (31) and the water inlet four (32) at the same time, and performs bidirectional flushing on the inner filter surface of the ultrafiltration element (4), and then enters the coarse filter cartridge (5) through the ultrafiltration element (4), and performs backwashing on the coarse filter cartridge (5), and the flushing liquid is discharged through the water inlet one (21); S4, external filtration: When the filtering capacity of the inner filtering surface of the ultrafiltration element (4) is greatly reduced, the raw liquid enters through the water inlet 2 (63), and the raw liquid pushes the switching plug (64) downward, while the partition plug (68) moves away from the partition hole (42). The switching plug (64) allows the raw liquid to pass through the coarse filter cartridge (5) from the inside to the outside, and the larger solid particle impurities are filtered through the coarse filter cartridge (5), and then enter the bottom through the partition hole (42), and then pass through the outer filtering surface of the ultrafiltration element (4) from the outside to the inside for fine filtration, and then be discharged from the water inlet 4 (32); S5, external flushing: After a period of time, the flushing liquid enters through the water inlet four (32) to backwash the ultrafiltration element (4), and then flushes the coarse filter cartridge (5) from the outside of the coarse filter cartridge (5), and the flushing water is discharged through the water inlet two (63).

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