Degerming and filtering device for production of oxytetracycline injection

Abstract

The invention discloses an oxytetracycline injection production degerming and filtering device, and relates to the technical field of oxytetracycline injects.The technical scheme is that the oxytetracycline injection production degerming and filtering device comprises a bottom plate, a storage box is fixedly embedded in the bottom plate, a discharging pipe is fixedly embedded in the bottom of the storage box, one side of the storage box is fixedly connected with a connecting plate and a connecting block, and the connecting block is located at the bottom of the connecting plate; and the shell is arranged outside the discharging pipe in a sleeving manner, and a mounting plate I is fixedly arranged outside the shell in a sleeving manner. The device has the beneficial effects that the sealing gasket can play a role in primary sealing, and in addition, the annular air cushion can be inflated to bulge, so that the annular air cushion can be in contact with the rubber ring, and then double sealing is realized; when the annular air cushion is inflated, the sealing gasket can be inflated to enable the sealing gasket to bulge, so that the sealing effect between the sealing gasket and the discharging pipe is improved, the sealing performance can be qualitatively improved by matching with double sealing, and then liquid is prevented from escaping from a gap between the sealing gasket and the discharging pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of oxytetracycline injection, and in particular to a sterilization and filtration device for producing oxytetracycline injection. Background Art

[0002] During the production of oxytetracycline, membrane filtration separation technology is required to sterilize and filter it. The core principle of membrane filtration is to use a filter membrane with a specific pore size to intercept microorganisms (such as bacteria, fungi, etc.), thereby achieving the purpose of purifying the fluid;

[0003] The existing sterilization and filtration device was found to have poor sealing during use. During sterilization and filtration, the injection liquid easily escaped from the gap between the ultrafiltration membrane and the feed pipe, which would lead to a decrease in the quality of sterilization and filtration. Therefore, it is necessary to improve it.

[0004] For this reason, it is necessary to invent a sterilizing and filtering device for producing oxytetracycline injection. Summary of the Invention

[0005] To this end, the present invention provides a sterilizing filtration device for producing oxytetracycline injection to solve the problems in the background technology.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a sterilizing filtration device for producing oxytetracycline injection, comprising:

[0007] A bottom plate, wherein a storage box is fixedly embedded on the bottom plate, a feed pipe is fixedly embedded at the bottom of the storage box, a connecting plate and a connecting block are fixedly connected to one side of the storage box, and the connecting block is located at the bottom of the connecting plate;

[0008] The shell is sleeved on the outside of the feeding tube, the outer sleeve of the shell is fixedly sleeved with a mounting plate 1, the outer sleeve of the feeding tube is fixedly sleeved with a mounting plate 2, the mounting plate 1 and the mounting plate 2 are connected by bolts, and a material trough is opened at the bottom of the shell;

[0009] an ultrafiltration membrane disposed inside the housing;

[0010] A sealing assembly, which is used to prevent liquid from escaping from the gap between the ultrafiltration membrane and the feed pipe;

[0011] An auxiliary component for intermittently allowing liquid to pass through an ultrafiltration membrane.

[0012] Preferably, a liquid adding pipe is fixedly embedded in the top of the storage box, and a switch valve is provided on the outside of the liquid adding pipe.

[0013] Preferably, the sealing assembly includes a sealing gasket, which is fixedly connected to the bottom end of the discharge pipe and contacts the top of the ultrafiltration membrane, an annular cavity is provided inside the sealing gasket, a circular ring is fixedly provided on the outside of the discharge pipe, an annular groove is provided on the circular ring, an annular air cushion is fixedly connected in the annular groove, a rubber ring is fixedly connected to the inner wall of the shell, the rubber ring is sleeved on the outside of the annular air cushion, a plurality of connecting pipes are fixedly embedded in the annular air cushion and the circular ring, and the bottom ends of the plurality of connecting pipes extend into the annular cavity and are fixedly connected to the sealing gasket.

[0014] Preferably, the sealing assembly also includes a box body 1, which is fixedly embedded in the connecting block, and a through groove 1 is opened at the bottom of the box body, and a piston 1 is slidably provided inside the box body, and the bottom end of the piston 1 is fixedly connected to a moving rod 1, and the moving rod 1 is set to be hollow, and the moving rod 1 passes through the through groove 1 and slides in contact with it, and a moving rod 2 is slidably provided in the moving rod 1, and the top of the moving rod 2 is fixedly connected to a spring 1, and the top of the spring 1 is fixedly connected to the inner wall of the top of the moving rod 1, and the inner walls on both sides of the moving rod 1 are fixedly connected to protrusions, and sliding grooves are opened on both sides of the moving rod 2, and the two protrusions are slidably set in the two sliding grooves respectively.

[0015] Preferably, two pipes 1 are fixedly embedded on the mounting plate 2, the bottom ends of the two pipes 1 extend into the interior of the annular air cushion and the pipe 1 is fixedly connected to the annular air cushion and the circular ring, a U-shaped tube is fixedly connected to the two pipes 1, a pipe 2 is fixedly connected between the U-shaped tube and the box body 1, and the pipe 2 passes through the bottom plate and the connecting block and is fixedly connected thereto.

[0016] Preferably, the auxiliary component includes a second box body, which is fixedly embedded with a connecting block, a second through groove is opened at the bottom of the second box body, a second piston is slidingly provided inside the second box body, a third moving rod is fixedly connected to the bottom end of the second piston, the third moving rod passes through the second through groove and is in sliding contact with it, a second spring is fixedly connected to the top of the second piston, the top of the second spring is fixedly connected to the inner wall of the top of the second box body, a third pipe is fixedly embedded with the top of the second box body, a one-way valve is provided on the outside of the third pipe, a fourth pipe is fixedly embedded on the third pipe, a one-way valve is provided on the outside of the fourth pipe, and a fifth pipe is fixedly connected between the third pipe and the storage box.

[0017] Preferably, the auxiliary component also includes support rod 1 and support rod 2, support rod 1 is fixedly connected to the inside of the storage box, support rod 2 is fixedly connected to the inside of the discharge pipe, support rod 1 and support rod 2 are embedded with rotating shaft 1, the bottom end of rotating shaft 1 is fixedly connected to a cleaning brush, the bristles of the cleaning brush are in contact with the top of the ultrafiltration membrane, the top of rotating shaft 1 is fixedly connected to magnet 1, the top of the storage box is fixedly connected to a U-shaped frame, rotating shaft 2 is embedded on the U-shaped frame, the bottom end of rotating shaft 2 is fixedly connected to magnet 2 attracted to magnet 1, and the rotating shaft 1 is connected to support rod 1 and support rod 2 through sealed bearings.

[0018] Preferably, the top of the U-shaped frame is fixedly connected to an L-shaped plate, the top of the second rotating shaft is connected to the inner wall of the top of the L-shaped plate, the external fixed sleeve of the second rotating shaft is provided with a drum, a rope is wound on the drum, a torsion spring is fixedly connected between the drum and the L-shaped plate, the torsion spring is sleeved on the outside of the second rotating shaft, a turntable is provided on the top of the connecting plate, a connecting rod is embedded in the turntable, one end of the rope is fixedly connected to the connecting rod, two guide wheels are fixedly connected to the top of the storage box, the two guide wheels are in contact with the front and rear sides of the rope respectively, the second rotating shaft is connected to the U-shaped frame and the L-shaped plate through bearings, and the connecting rod is connected to the turntable through bearings.

[0019] Preferably, the bottom of the base plate is fixedly connected to a motor, the motor output shaft is fixedly connected to a reciprocating screw, the top of the reciprocating screw passes through the base plate, the connecting block and the connecting plate and is fixedly connected to the bottom of the turntable, a sliding seat is provided on the outside of the reciprocating screw, the sliding seat and the reciprocating screw are connected through a ball screw pair, a push rod is fixedly connected between the sliding seat and the moving rod two, a push plate is fixedly connected to one side of the sliding seat, the push plate is located directly below the moving rod three, and the reciprocating screw is connected to the base plate, the connecting block and the connecting plate through bearings.

[0020] Preferably, two supporting legs are fixedly connected to the bottom of the base plate.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention is designed with a sealing assembly. When in use, the sealing gasket can play a role of a seal. In addition, the annular air cushion can be inflated to make its edge bulge, so that the annular air cushion can contact the rubber ring, thereby achieving a double seal. When the annular air cushion is inflated, the sealing gasket can also be inflated to make its edge bulge, thereby increasing the sealing effect between the sealing gasket and the discharge pipe. The combination of the double seal can substantially improve the sealing performance, thereby preventing liquid from escaping from the gap between the sealing gasket and the discharge pipe.

[0023] 2. The present invention is designed with auxiliary components, which can intermittently inflate the storage box during use. When the pressure increases, the liquid in the storage box can pass through the ultrafiltration membrane to escape, thereby achieving sterilization filtration. Such a cycle can achieve intermittent transmission of the liquid through the ultrafiltration membrane, which can avoid the reduction of filtration effect caused by too much liquid passing through at one time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0026] Figure 1 A schematic diagram of the overall structure provided by the present invention;

[0027] Figure 2 A front cross-sectional view provided by the present invention;

[0028] Figure 3 The present invention provides Figure 2 A magnified view of point A in the figure;

[0029] Figure 4 The present invention provides Figure 2 Enlarged view of point B in FIG.

[0030] Figure 5 The present invention provides Figure 2 Enlarged view of point C in the figure;

[0031] Figure 6 The present invention provides Figure 2 The enlarged view of point D in the figure;

[0032] Figure 7 A side cross-sectional view provided for the present invention;

[0033] Figure 8 The present invention provides Figure 7 Enlarged view of point E in the figure;

[0034] Figure 9A rear perspective view provided by the present invention;

[0035] In the figure: 1, bottom plate; 2, storage box; 3, feed pipe; 4, connecting plate; 5, connecting block; 6, shell; 7, mounting plate 1; 8, mounting plate 2; 9, ultrafiltration membrane; 10, liquid adding pipe; 11, switch valve; 12, sealing gasket; 13, ring; 14, annular air cushion; 15, rubber ring; 16, connecting pipe; 17, box body 1; 18, piston 1; 19, moving rod 1; 20, moving rod 2; 21, spring 1; 22, bump; 23, pipe 1; 24, U-shaped pipe; 25, pipe 2; 26, box body 2; 27, piston 2; 28, moving Rod three; 29. Spring two; 30. Pipe three; 31. One-way valve one; 32. Pipe four; 33. One-way valve two; 34. Pipe five; 35. Support rod one; 36. Support rod two; 37. Rotating shaft one; 38. Cleaning brush; 39. Magnet one; 40. U-shaped frame; 41. Rotating shaft two; 42. Magnet two; 43. L-shaped plate; 44. Reel; 45. Rope; 46. Torsion spring; 47. Turntable; 48. Connecting rod; 49. Guide wheel; 50. Motor; 51. Reciprocating screw; 52. Sliding seat; 53. Push rod; 54. Push plate; 55. Support leg. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] Refer to the attached Figure 1 -Attached Figure 9 The present invention provides a sterilizing filtration device for producing oxytetracycline injection, comprising:

[0038] A bottom plate 1 is provided with a storage box 2 fixedly embedded on the bottom plate 1, a feeding pipe 3 is fixedly embedded at the bottom of the storage box 2, a connecting plate 4 and a connecting block 5 are fixedly connected to one side of the storage box 2, and the connecting block 5 is located at the bottom of the connecting plate 4;

[0039] The shell 6 is sleeved on the outside of the feeding pipe 3. The outside of the shell 6 is fixedly sleeved with a mounting plate 1 7. The outside of the feeding pipe 3 is fixedly sleeved with a mounting plate 2 8. The mounting plate 1 7 and the mounting plate 2 8 are connected by bolts. A material trough is opened at the bottom of the shell 6;

[0040] An ultrafiltration membrane 9 is disposed inside the housing 6;

[0041] A sealing assembly, which is used to prevent liquid from escaping from the gap between the ultrafiltration membrane 9 and the feed pipe 3;

[0042] An auxiliary component for intermittently allowing liquid to pass through the ultrafiltration membrane 9;

[0043] A liquid adding pipe 10 is fixedly embedded on the top of the storage box 2, and a switch valve 11 is provided on the outside of the liquid adding pipe 10;

[0044] The sealing assembly includes a sealing gasket 12, which is fixedly connected to the bottom end of the discharge pipe 3 and the sealing gasket 12 is in contact with the top of the ultrafiltration membrane 9. An annular cavity is provided inside the sealing gasket 12, and a circular ring 13 is fixedly provided on the outside of the discharge pipe 3. An annular groove is provided on the circular ring 13, and an annular air cushion 14 is fixedly connected to the annular groove. A rubber ring 15 is fixedly connected to the inner wall of the shell 6, and the rubber ring 15 is sleeved on the outside of the annular air cushion 14. A plurality of connecting pipes 16 are fixedly embedded in the annular air cushion 14 and the circular ring 13. The bottom ends of the plurality of connecting pipes 16 extend into the annular cavity and are fixedly connected to the sealing gasket 12. The sealing assembly also includes a box body 17, which is fixedly embedded in the connecting block 5. A through groove 1 is provided at the bottom of the box body 17. A piston 18 is slidingly provided inside the box body 17. The bottom end of the piston 18 is fixedly connected to a moving rod 19. The moving rod One 19 is set to be hollow, and the moving rod one 19 passes through the through groove one and slides in contact with it. A moving rod two 20 is slidably provided in the moving rod one 19, and the top of the moving rod two 20 is fixedly connected to a spring one 21, and the top of the spring one 21 is fixedly connected to the inner wall of the top of the moving rod one 19. The inner walls on both sides of the moving rod one 19 are fixedly connected with protrusions 22, and sliding grooves are provided on both sides of the moving rod two 20. The two protrusions 22 are slidably set in the two sliding grooves respectively, and two pipes one 23 are fixedly embedded on the mounting plate two 8. The bottom ends of the two pipes one 23 extend to the inside of the annular air cushion 14 and the pipe one 23 is fixedly connected to the annular air cushion 14 and the circular ring 13. A U-shaped tube 24 is fixedly connected to the two pipes one 23, and a pipe two 25 is fixedly connected between the U-shaped tube 24 and the box one 17. The pipe two 25 passes through the bottom plate 1 and the connecting block 5 and is fixedly connected to them;

[0045] In this embodiment, a sealing assembly is designed. When in use, the sealing gasket 12 can play a role of sealing. In addition, the annular air cushion 14 can be inflated to make its edge bulge, so that the annular air cushion 14 can contact the rubber ring 15, thereby achieving double sealing. When the annular air cushion 14 is inflated, the sealing gasket 12 can also be inflated to make its edge bulge, thereby increasing the sealing effect between the sealing gasket 12 and the discharge pipe 3.

[0046] Among them, in order to achieve the purpose of intermittent permeation of oxytetracycline through the ultrafiltration membrane 9, the present device is implemented by the following technical solutions: the auxiliary component includes a box body 26, the box body 26 is fixedly embedded with a connecting block 5, the bottom of the box body 26 is provided with a through groove 2, the inside of the box body 26 is provided with a piston 27, the bottom end of the piston 27 is fixedly connected to a moving rod 3 28, the moving rod 3 28 passes through the through groove 2 and is in sliding contact with it, the top of the piston 27 is fixedly connected to a spring 29, the top of the spring 29 is fixedly connected to the inner wall of the top of the box body 26, and the top of the box body 26 is fixed. A pipe 3 30 is embedded therein, a one-way valve 1 31 is provided on the outside of the pipe 3 30, a pipe 4 32 is fixedly embedded on the pipe 3 30, a one-way valve 2 33 is provided on the outside of the pipe 4 32, a pipe 5 34 is fixedly connected between the pipe 3 30 and the storage box 2, and the auxiliary component also includes a support rod 1 35 and a support rod 2 36, the support rod 1 35 is fixedly connected to the inside of the storage box 2, the support rod 2 36 is fixedly connected to the inside of the feed pipe 3, a rotating shaft 1 37 is embedded on the support rod 1 35 and the support rod 2 36, and a cleaning brush 38 is fixedly connected to the bottom end of the rotating shaft 1 37. The bristles are in contact with the top of the ultrafiltration membrane 9, the top of the rotating shaft 37 is fixedly connected to a magnet 39, the top of the storage box 2 is fixedly connected to a U-shaped frame 40, the U-shaped frame 40 is embedded with a rotating shaft 2 41, the bottom of the rotating shaft 2 41 is fixedly connected to a magnet 2 42 attracted to the magnet 1 39, the rotating shaft 1 37 is connected to the support rod 1 35 and the support rod 2 36 through a sealed bearing, the top of the U-shaped frame 40 is fixedly connected to an L-shaped plate 43, the top of the rotating shaft 2 41 is connected to the inner wall of the top of the L-shaped plate 43, the outer sleeve of the rotating shaft 2 41 is fixedly provided with a reel 44, and a rope is wound around the reel 44 45, a torsion spring 46 is fixedly connected between the reel 44 and the L-shaped plate 43, and the torsion spring 46 is sleeved on the outside of the second rotating shaft 41. A turntable 47 is provided on the top of the connecting plate 4, and a connecting rod 48 is embedded in the turntable 47. One end of the rope 45 is fixedly connected to the connecting rod 48. Two guide wheels 49 are fixedly connected to the top of the storage box 2. The two guide wheels 49 are in contact with the front and rear sides of the rope 45 respectively. The second rotating shaft 41 is connected to the U-shaped frame 40 and the L-shaped plate 43 through bearings, and the connecting rod 48 is connected to the turntable 47 through bearings. The auxiliary component can make oxytetracycline intermittently pass through the ultrafiltration membrane 9;

[0047] Among them, in order to achieve the purpose of the sealing component and the auxiliary component working, the present device adopts the following technical solutions: the bottom of the base plate 1 is fixedly connected to the motor 50, the output shaft of the motor 50 is fixedly connected to the reciprocating screw 51, the top of the reciprocating screw 51 passes through the base plate 1, the connecting block 5 and the connecting plate 4 and is fixedly connected to the bottom of the turntable 47, the reciprocating screw 51 is provided with a sliding seat 52 on the outside, the sliding seat 52 is connected to the reciprocating screw 51 through a ball screw pair, a push rod 53 is fixedly connected between the sliding seat 52 and the moving rod 20, and a push plate 54 is fixedly connected to one side of the sliding seat 52, and the push plate 54 is located directly below the moving rod 3 28, the reciprocating screw 51 is connected to the base plate 1, the connecting block 5 and the connecting plate 4 through bearings, and the design of the motor 50, the reciprocating screw 51 and the sliding seat 52 can enable the sealing component and the auxiliary component to work;

[0048] In order to achieve the purpose of support, the present device is implemented by adopting the following technical solution: two support legs 55 are fixedly connected to the bottom of the base plate 1, and the support legs 55 can support the device.

[0049] The use process of the present invention is as follows: when the oxytetracycline injection needs to be sterilized and filtered, the switch valve 11 is opened, and then the oxytetracycline injection is added to the storage box 2 through the liquid adding pipe 10, and then the switch valve 11 is closed;

[0050] The motor 50 is then controlled to work, and the motor 50 drives the reciprocating screw 51 to rotate. The rotation of the reciprocating screw 51 drives the sliding seat 52 to move up and down. When the sliding seat 52 moves upward, the push rod 53 and the push plate 54 can move upward. The upward movement of the push rod 53 can make the moving rod 20, the spring 1, the moving rod 19 and the piston 18 move upward, and the upward movement of the push plate 54 can contact the bottom of the moving rod 3 28. Under the action of the pipe 2 25, the U-shaped pipe 24 and the two pipes 1 23, the upward movement of the piston 18 can make the air in the box 17 enter the annular air cushion 14, so that the annular air cushion 14 can become bulged and contact the rubber ring 15. In addition, under the action of the multiple connecting pipes 16, air can also enter the annular cavity, so that the sealing gasket 12 can become bulged, thereby reducing the gap between the ultrafiltration membrane 9 and the discharge pipe 3, so that the single sealing effect of the sealing gasket 12 will be better, and the double sealing in contact with the air cushion and the rubber ring 15 can enhance the sealing effect.

[0051] Then, the sliding seat 52 continues to move upward, which can make the push rod 53, the push plate 54, the moving rod 20 and the moving rod 3 28 continue to move upward, and at the same time, the spring 1 21 is compressed. The upward movement of the moving rod 3 28 can make the piston 2 27 move upward and the spring 2 29 is compressed. Then, under the action of the pipe 3 30, the one-way valve 1 31 and the pipe 5 34, the air in the box 2 26 can enter the storage box 2, so that the pressure in the storage box 2 can be increased, so that the oxytetracycline in the storage box 2 can be squeezed out, so that the oxytetracycline passes through the ultrafiltration membrane 9 to achieve sterilization filtration. In addition, under the action of the double seal, it can be ensured that the oxytetracycline is discharged only through the ultrafiltration membrane 9;

[0052] When the air in the second box body 26 completely enters the storage box 2, the reciprocating screw 51 continues to rotate. At this time, the upward movement of the sliding seat 52 ends, and the sliding seat 52 can move downward, and then the push rod 53, push plate 54, moving rod 19, moving rod 20, moving rod 3 28, piston 1 18 and piston 2 27 and other components move downward and reset. The downward movement of piston 18 can suck back the air in the annular air cushion 14 and the annular cavity. When the piston 2 27 moves downward and resets, the outside air can enter the box body through the pipe 4 32 and the one-way valve 2 33. After the downward movement of the sliding seat 52, the sliding seat 52 can move upward, and then the same principle continues to inflate the annular air cushion 14 and the storage box 2. Such a cycle can realize intermittent permeation of the liquid through the ultrafiltration membrane 9, and can avoid the reduction of the filtration effect caused by too much liquid passing through at one time;

[0053] When the reciprocating screw 51 rotates, the turntable 47 can also be rotated. The rotation of the turntable 47 can cause the connecting rod 48 to rotate from the left side to the right side, and then from the right side to the left side. When the connecting rod 48 moves from the left side to the right side, the rope 45 can be pulled, and when it moves from the right side to the left side, the pulling of the rope 45 can be released. When pulling the rope 45, the torsion spring 46 can be used to make the rotating shaft 2 41 and the magnet 2 42 rotate back and forth continuously, and then under the action of magnetic force, the magnet 2 42 rotates back and forth to make the magnet 1 39 rotate back and forth, and then make the rotating shaft 1 37 rotate back and forth, so that the cleaning brush 38 can rotate back and forth, so that the cleaning brush 38 can clean the impurities on the ultrafiltration membrane 9, so as to avoid impurities from being attached to the ultrafiltration membrane 9 all the time, thereby ensuring that oxytetracycline can pass through the ultrafiltration membrane 9 normally.

[0054] The above are merely preferred embodiments of the present invention. Anyone skilled in the art may modify the present invention using the above-described technical solutions or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent replacement based on the technical solutions of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. A sterilizing filtration device for producing oxytetracycline injection, characterized in that: include: A bottom plate (1), a storage box (2) is fixedly embedded on the bottom plate (1), a feed pipe (3) is fixedly embedded at the bottom of the storage box (2), a connecting plate (4) and a connecting block (5) are fixedly connected to one side of the storage box (2), and the connecting block (5) is located at the bottom of the connecting plate (4); The shell (6) is sleeved on the outside of the feed tube (3); the shell (6) is fixedly sleeved with a first mounting plate (7) on the outside; the feed tube (3) is fixedly sleeved with a second mounting plate (8) on the outside; the first mounting plate (7) and the second mounting plate (8) are connected by bolts; and a material trough is provided at the bottom of the shell (6); an ultrafiltration membrane (9) disposed inside the housing (6); A sealing assembly for preventing liquid from escaping from the gap between the ultrafiltration membrane (9) and the feed pipe (3); An auxiliary component is used for intermittently allowing liquid to pass through the ultrafiltration membrane (9).

2. A sterilizing filtration device for producing oxytetracycline injection according to claim 1, characterized in that: A liquid adding pipe (10) is fixedly embedded in the top of the storage box (2), and a switch valve (11) is provided on the outside of the liquid adding pipe (10).

3. The sterilizing filtration device for producing oxytetracycline injection according to claim 1, characterized in that: The sealing assembly includes a sealing gasket (12), which is fixedly connected to the bottom end of the discharge pipe (3) and the sealing gasket (12) is in contact with the top of the ultrafiltration membrane (9), an annular cavity is provided inside the sealing gasket (12), a circular ring (13) is fixedly provided on the outside of the discharge pipe (3), an annular groove is provided on the circular ring (13), an annular air cushion (14) is fixedly connected in the annular groove, a rubber ring (15) is fixedly connected to the inner wall of the shell (6), the rubber ring (15) is sleeved on the outside of the annular air cushion (14), a plurality of connecting pipes (16) are fixedly embedded on the annular air cushion (14) and the circular ring (13), and the bottom ends of the plurality of connecting pipes (16) extend into the annular cavity and are fixedly connected to the sealing gasket (12).

4. A sterilizing filtration device for producing oxytetracycline injection according to claim 3, characterized in that: The sealing assembly also includes a box body (17), the box body (17) is fixedly embedded on the connecting block (5), the box body (17) is provided with a through groove (1) at the bottom, the box body (17) is provided with a piston (18) slidingly inside, the piston (18) is fixedly connected with a moving rod (19) at the bottom end, the moving rod (19) is set to be hollow, the moving rod (19) passes through the through groove (1) and is in sliding contact with it, the moving rod (19) is provided with a moving rod (20) slidingly, the top of the moving rod (20) is fixedly connected with a spring (21), the top of the spring (21) is fixedly connected to the inner wall of the top of the moving rod (19), the inner walls on both sides of the moving rod (19) are fixedly connected with protrusions (22), the two sides of the moving rod (20) are provided with sliding grooves, and the two protrusions (22) are respectively slidably set in the two sliding grooves.

5. A sterilizing filtration device for producing oxytetracycline injection according to claim 4, characterized in that: Two pipes (23) are fixedly embedded on the second mounting plate (8), the bottom ends of the two pipes (23) extend into the interior of the annular air cushion (14), and the pipes (23) are fixedly connected to the annular air cushion (14) and the circular ring (13), the two pipes (23) are fixedly connected to a U-shaped pipe (24), and a pipe (25) is fixedly connected between the U-shaped pipe (24) and the box (17), and the pipe (25) passes through the bottom plate (1) and the connecting block (5) and is fixedly connected thereto.

6. The sterilizing filtration device for producing oxytetracycline injection according to claim 1, characterized in that: The auxiliary component includes a second box body (26), the second box body (26) is fixedly embedded on the connecting block (5), the bottom of the second box body (26) is provided with a through groove 2, the inside of the second box body (26) is provided with a piston 2 (27) for sliding, the bottom end of the second piston (27) is fixedly connected to a moving rod 3 (28), the moving rod 3 (28) passes through the through groove 2 and is in sliding contact with it, the top of the second piston (27) is fixedly connected to a spring 2 (29), the top of the second spring (29) is fixedly connected to the inner wall of the top of the second box body (26), the top of the second box body (26) is fixedly embedded with a pipe 3 (30), the outside of the pipe 3 (30) is provided with a one-way valve 1 (31), the pipe 4 (32) is fixedly embedded on the pipe 3 (30), the outside of the pipe 4 (32) is provided with a one-way valve 2 (33), and the pipe 5 (34) is fixedly connected between the pipe 3 (30) and the storage box (2).

7. The sterilizing filtration device for producing oxytetracycline injection according to claim 1, characterized in that: The auxiliary component also includes a support rod 1 (35) and a support rod 2 (36), wherein the support rod 1 (35) is fixedly connected to the inside of the storage box (2), and the support rod 2 (36) is fixedly connected to the inside of the discharge pipe (3), and a rotating shaft 1 (37) is embedded in the support rod 1 (35) and the support rod 2 (36), and the bottom end of the rotating shaft 1 (37) is fixedly connected to a cleaning brush (38), and the bristles of the cleaning brush (38) are in contact with the top of the ultrafiltration membrane (9), and the top end of the rotating shaft 1 (37) is fixedly connected to a magnet 1 (39), and the top of the storage box (2) is fixedly connected to a U-shaped frame (40), and the U-shaped frame (40) is embedded with a rotating shaft 2 (41), and the bottom end of the rotating shaft 2 (41) is fixedly connected to a magnet 2 (42) attracted to the magnet 1 (39), and the rotating shaft 1 (37) is connected to the support rod 1 (35) and the support rod 2 (36) through a sealed bearing.

8. The sterilizing filtration device for producing oxytetracycline injection according to claim 7, characterized in that: The top of the U-shaped frame (40) is fixedly connected with an L-shaped plate (43), the top of the second rotating shaft (41) is connected to the inner wall of the top of the L-shaped plate (43), the outside of the second rotating shaft (41) is fixedly provided with a reel (44), a rope (45) is wound around the reel (44), a torsion spring (46) is fixedly connected between the reel (44) and the L-shaped plate (43), the torsion spring (46) is sleeved on the outside of the second rotating shaft (41), and the top of the connecting plate (4) is provided with A turntable (47) is provided with a connecting rod (48) embedded in the turntable (47), one end of the rope (45) is fixedly connected to the connecting rod (48), two guide wheels (49) are fixedly connected to the top of the storage box (2), the two guide wheels (49) are respectively in contact with the front and rear sides of the rope (45), the second rotating shaft (41) is connected to the U-shaped frame (40) and the L-shaped plate (43) through bearings, and the connecting rod (48) is connected to the turntable (47) through bearings.

9. The sterilizing filtration device for producing oxytetracycline injection according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly connected to a motor (50), and the output shaft of the motor (50) is fixedly connected to a reciprocating screw (51). The top end of the reciprocating screw (51) passes through the base plate (1), the connecting block (5) and the connecting plate (4) and is fixedly connected to the bottom of the turntable (47). The reciprocating screw (51) is externally sleeved with a sliding seat (52). The sliding seat (52) and the reciprocating screw (51) are connected through a ball screw pair. A push rod (53) is fixedly connected between the sliding seat (52) and the second moving rod (20). A push plate (54) is fixedly connected to one side of the sliding seat (52). The push plate (54) is located directly below the third moving rod (28). The reciprocating screw (51) is connected to the base plate (1), the connecting block (5) and the connecting plate (4) through a bearing.

10. The sterilizing filtration device for producing oxytetracycline injection according to claim 1, characterized in that: Two supporting legs (55) are fixedly connected to the bottom of the base plate (1).

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