A filtering device for producing pharmaceutical intermediates

Abstract

The present invention belongs to the technical field of pharmaceutical intermediate processing, and discloses a filtering device for producing pharmaceutical intermediates, including a filtering box, a plurality of first fixed blocks are respectively fixedly connected to the outside of the filtering box, a plurality of first fixed blocks are fixedly connected to the bottom with support legs, a fixed top block is fixedly connected to the top of the filtering box, and a feed valve port is arranged on one side of the fixed top block. The present invention starts an air pressurizer at the same time, and the air pressurizer starts to provide positive pressure to the inside of the filtering box, thereby pressing the pharmaceutical intermediate slurry inside, thereby squeezing out the water therein, reducing the water content therein, which is beneficial to the later processing. At the same time, after the air pressurizer pressurizes the inside, the pressure positively impacts the surface of the extrusion block, avoiding excessive contact pressure between the filter screen and the pharmaceutical intermediate caused by pressurization, thereby causing large particles of pharmaceutical intermediates to be stuck in the middle of the filter screen, affecting the normal use of the filter screen.

Description

Technical Field

[0001] The invention belongs to the technical field of pharmaceutical intermediate processing, in particular to a filtering device for producing pharmaceutical intermediates. Background Art

[0002] The so-called pharmaceutical intermediates are actually some chemical raw materials or chemical products used in the process of drug synthesis. This kind of chemical product does not require a drug production license and can be produced in ordinary chemical plants. As long as it reaches a certain level, it can be used in the synthesis of drugs.

[0003] However, existing pharmaceutical intermediate filtering devices often have some problems during actual use: first, most existing filtering devices directly filter through the filter screen, and there is a problem of low efficiency in the screening and filtering process; second, when filtering directly through the filter screen, the pharmaceutical intermediate filtrate will contain a large amount of water, which is not conducive to subsequent treatment and processing. If it is pressurized to squeeze out the internal water, the contact pressure between the filter screen and the pharmaceutical intermediate is relatively large, which may easily cause large particles of pharmaceutical intermediates to be stuck in the middle of the filter screen, thereby affecting the normal use of the filter screen and reducing the service life of the filter screen; and if the pharmaceutical intermediate is pressurized during the filtration process to squeeze out the water, the sticky properties of the pharmaceutical intermediate pulp will cause it to adhere more closely to the contact surface with the pharmaceutical intermediate, resulting in insufficient utilization of the pharmaceutical intermediate and increasing the difficulty of cleaning the filter screen. Summary of the invention

[0004] The object of the present invention is to provide a filtering device for producing pharmaceutical intermediates to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a filtering device for producing pharmaceutical intermediates, comprising a filtering box, a plurality of first fixed blocks are respectively fixedly connected to the outside of the filtering box, a plurality of the first fixed blocks are fixedly connected to the bottom with support legs, a fixed top block is fixedly connected to the top of the filtering box, a feed valve port is arranged on one side of the fixed top block, the feed valve port is fixedly connected to the filtering box, the feed valve port passes through the top of the filtering box, a chassis hydraulic clamp is threadedly connected to the bottom of the filtering box, a first clamping block is fixedly connected to the inside of the chassis hydraulic clamp, a first chassis is arranged inside the first clamping block, a second clamping block is fixedly connected to the outside of the first chassis, and the first clamping block is connected to the second clamping block. The blocks are arranged in a staggered manner and the length of the second block is longer than the first block. A water outlet chute is provided inside the first chassis, and a plurality of support columns are fixedly connected inside the water outlet chute. One end of the plurality of support columns is fixedly connected to an extrusion block, and a mounting groove is provided inside the extrusion block. A plurality of springs are fixedly connected inside the mounting groove, and a filter is fixedly connected to one end of the spring. The filter can be respectively fitted with the two sides of the mounting groove when in a pop-up state. A water outlet is fixedly connected to the bottom end of the middle part of the water outlet chute, and the top of the water outlet is flush with the bottom of the water outlet chute. A stirring assembly is provided inside the fixed top block, and a plurality of lifting assemblies are respectively provided on one side of the plurality of support legs, and a rotating assembly is provided on one side of the chassis hydraulic clamp.

[0006] Preferably, the stirring assembly includes a first driving motor, which is fixedly connected to the top inner side of the fixed top block, the output end of the first driving motor is fixedly connected to the first rotating shaft, one end of the first rotating shaft is rotatably connected to the filter box, the outer side of the first rotating shaft is threadedly connected to a fixed slider, one side of the fixed slider is fixedly connected to the second driving motor, the middle part of the bottom end of the second driving motor is fixedly connected to a locking clamp, the inside of the locking clamp is fixedly connected to the second rotating shaft, the bottom of the second rotating shaft is fixedly connected to a spiral column, both sides of the spiral column are fixedly connected to stirring rods, an air compressor is provided on one side of the second driving motor, the air compressor is fixedly connected to the filter box, and a pressure gauge is fixedly connected to one side of the middle of the air compressor.

[0007] Preferably, both ends of the fixed slider and the second drive motor are in contact with both sides of the interior of the fixed top block, the pressurizing port of the air pressurizer passes through the filter box and extends to the interior of the filter box, and a plurality of ventilation holes are provided on one side of the fixed top block.

[0008] Preferably, the lifting assembly includes a plurality of second fixed blocks, which are respectively fixedly connected to one side of a plurality of supporting legs, a lifting cylinder is fixedly connected to the middle of the second fixed block, a locking nut is threadedly connected to the top of the lifting cylinder, and the locking nut is in contact with the surface of the second fixed block, a third fixed block is fixedly connected to the bottom of the lifting cylinder, an L-shaped support block is fixedly connected to the bottom of the third fixed block, a rectangular support plate is fixedly connected to the top of one side of the L-shaped support block, and the rectangular support plate is in contact with the first chassis.

[0009] Preferably, the rotating assembly includes a first articulated block, the first articulated block is fixedly connected to the supporting leg, the middle part of the first articulated block is rotatably connected to a second articulated shaft, one side of the second articulated shaft is fixedly connected to a hydraulic rod, one end of the hydraulic rod is fixedly connected to a second articulated shaft, both ends of the second articulated shaft are fixedly connected to second articulated blocks, and the second articulated shaft is movably articulated to the second articulated block.

[0010] Preferably, a through hole is opened on one side of the filter box body, a discharge sealing circular plate is slidably connected inside the through hole, a connecting rod is fixedly connected to one side of the discharge sealing circular plate, a third hinge block is fixedly connected to one side of the filter box body, and the connecting rod is movably hinged to the third hinge block.

[0011] Preferably, a hot air inlet is fixedly connected to one side of the top of the filter box, and the hot air inlet is connected to a cavity arranged inside the filter box.

[0012] Preferably, the inner surface of the filter screen is flush with the inner surface of the filter box, a fixing groove is provided inside the filter box, and a certain gap is left between the outer side of the filter screen and the fixing groove.

[0013] Preferably, a spiral cut is provided on the outer side of the bottom of the spiral column, a surface on one side of the stirring rod is flush with the bottom plane, and a surface on the other side of the stirring rod is an inclined surface.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention starts the air pressurizer at the same time, and the air pressurizer provides positive pressure to the inside of the filter box, thereby pressing the raw pharmaceutical intermediate slurry inside, thereby squeezing out the moisture therein and reducing the moisture content therein, which is beneficial to the later processing. At the same time, after the air pressurizer pressurizes the inside, the pressure positively impacts the surface of the extrusion block, avoiding excessive contact pressure between the filter screen and the pharmaceutical intermediate caused by pressurization, resulting in large particles of pharmaceutical intermediates being stuck in the middle of the filter screen, thereby affecting the normal use of the filter screen and reducing the service life of the filter screen.

[0016] 2. The present invention starts the first drive motor during the filtration process, and the rotation of the first drive motor drives the first rotating shaft to rotate, and the rotation of the first rotating shaft drives the fixed slider to move, and the movement of the fixed slider drives the second drive motor to move, so as to adjust the stirring range of the spiral column, and at the same time start the second drive motor, the rotation of the second drive motor can drive the locking chuck and the second rotating shaft to rotate, and stir the introduced internal pharmaceutical intermediate slurry, so as to improve the filtration speed, and avoid a large amount of pharmaceutical intermediate slurry from accumulating on the filter surface to affect the filtration efficiency. During the drying and discharging process, the first drive motor and the second drive motor are started, and the first drive motor and the second drive motor drive the spiral column and the stirring rod to pressurize the pharmaceutical intermediate into a cake shape. At this time, the internal structure is compact, and the thread cut pattern can be better screwed into the interior of the pharmaceutical intermediate, and it is broken up by the stirring rod to achieve better drying effect and more convenient discharging.

[0017] 3. Start the hydraulic rod, and the hydraulic rod pulls the chassis hydraulic clamp backward. When the hydraulic rod is pulled backward, since the second hinge block is fixedly connected to the chassis hydraulic clamp and the second hinge block is hinged to the hydraulic rod, the hydraulic rod will pull the second hinge block to move when it is pulled backward. Due to the matching relationship between the chassis hydraulic clamp and the filter box, the movement of the second hinge block can drive the chassis hydraulic clamp to rotate along the filter box when the hydraulic rod is pulled backward, and at the same time, the multiple groups of first clamps inside the chassis hydraulic clamp are respectively rotated to the top of the gap between the multiple groups of second clamps. At this time, the chassis hydraulic clamp loses the support of the first clamp, and the chassis hydraulic clamp is affected by gravity and concentrates its weight on the top of the rectangular support plate. At this time, the lifting cylinder is started to drive the chassis hydraulic clamp to descend and detach from the inside of the filter box, so that the chassis hydraulic clamp and the inside of the filter box can be further cleaned to prevent the pharmaceutical intermediates from sticking to the inner wall of the filter box and the extrusion surface of the extrusion block, and to avoid the pharmaceutical intermediates from affecting the subsequent processing and use due to incomplete internal cleaning. At the same time, it is also convenient for the inspection and maintenance of the inside of the filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall right side structure of the present invention;

[0020] Figure 3 is a cross-sectional view of the filter housing of the present invention;

[0021] Figure 4 It is a bottom view of the overall structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the chassis hydraulic clamp structure of the present invention;

[0023] Figure 6It is a cross-sectional view of the chassis of the present invention;

[0024] Figure 7 A top view of the extrusion block of the present invention;

[0025] Figure 8 It is a cross-sectional view of the fixed top block of the present invention.

[0026] In the figure: 1, filter box; 2, first fixed block; 3, support leg; 4, fixed top block; 5, feed valve port; 6, chassis hydraulic clamp; 7, first clamp block; 8, first chassis; 9, second clamp block; 10, water outlet chute; 11, support column; 12, extrusion block; 13, mounting groove; 14, spring; 15, filter screen; 16, water outlet; 17, first drive motor; 18, first rotating shaft; 19, fixed slider; 1901, second drive motor; 20, locking clamp; 21, first Second rotating shaft; 22, spiral column; 23, stirring rod; 24, air compressor; 25, barometer; 26, second fixed block; 27, lifting cylinder; 28, locking nut; 29, third fixed block; 30, L-shaped support block; 31, rectangular support plate; 32, first hinge block; 33, second hinge shaft; 34, hydraulic rod; 36, second hinge shaft; 37, second hinge block; 38, discharge sealing circular plate; 39, connecting rod; 40, third hinge block; 41, hot air inlet. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figures 1 to 8As shown, an embodiment of the present invention provides a filtering device for producing pharmaceutical intermediates, including a filtering box 1, a plurality of first fixed blocks 2 are fixedly connected to the outside of the filtering box 1, a plurality of first fixed blocks 2 are fixedly connected to the bottom of the plurality of first fixed blocks 2, a fixed top block 4 is fixedly connected to the top of the filtering box 1, a feed valve port 5 is arranged on one side of the fixed top block 4, the feed valve port 5 is fixedly connected to the filtering box 1, the feed valve port 5 passes through the top of the filtering box 1, a chassis hydraulic clamp 6 is threadedly connected to the bottom of the filtering box 1, a first clamping block 7 is fixedly connected to the inside of the chassis hydraulic clamp 6, a first chassis 8 is arranged inside the first clamping block 7, a second clamping block 9 is fixedly connected to the outside of the first chassis 8, the first clamping block 7 and the second clamping block 9 are staggered and the length of the second clamping block 9 is longer than the first clamping block 7, a water outlet chute 10 is opened inside the first chassis 8, a plurality of support columns 11 are fixedly connected to the inside of the water outlet chute 10, and an extrusion block 12 is fixedly connected to one end of the plurality of support columns 11 A mounting groove 13 is provided inside the extrusion block 12, and a plurality of springs 14 are fixedly connected inside the mounting groove 13. A filter screen 15 is fixedly connected at one end of the spring 14. When the filter screen 15 is in a popped-up state, both sides can fit with the two sides of the mounting groove 13 respectively. A water outlet 16 is fixedly connected to the bottom end of the middle part of the water outlet chute 10, and the top of the water outlet 16 is flush with the bottom of the water outlet chute 10. A stirring component is provided inside the fixed top block 4, and a plurality of lifting components are respectively provided on one side of the plurality of supporting legs 3. A rotating component is provided on one side of the chassis hydraulic clamp 6. After the pharmaceutical intermediate slurry is injected into the interior of the filter box 1 from the feed valve port 5, the pharmaceutical intermediate slurry will stay on the surface of the extrusion block 12. At this time, due to the obstruction of the mounting groove 13, the pharmaceutical intermediate will stay on the surface of the extrusion block 12, and the excess water will pass through the mounting groove 13 and flow into the interior of the mounting groove 13. Due to gravity, the water flows out along the water outlet 16 inside the mounting groove 13 to complete the filtration.

[0029] Among them, the stirring assembly includes a first driving motor 17, the first driving motor 17 is fixedly connected to the top inner side of the fixed top block 4, the output end of the first driving motor 17 is fixedly connected to the first rotating shaft 18, one end of the first rotating shaft 18 is rotatably connected to the filter box body 1, the outer side of the first rotating shaft 18 is threadedly connected to a fixed slider 19, one side of the fixed slider 19 is fixedly connected to a second driving motor 1901, the middle part of the bottom end of the second driving motor 1901 is fixedly connected to a locking clamp 20, the inside of the locking clamp 20 is fixedly connected to a second rotating shaft 21, the bottom of the second rotating shaft 21 is fixedly connected to a spiral column 22, and both sides of the spiral column 22 are respectively fixedly connected to stirring rods 23, an air pressurizer 24 is arranged on one side of the second driving motor 1901, the air pressurizer 24 is fixedly connected to the filter box body 1, and a barometer 25 is fixedly connected to one side of the middle part of the air pressurizer 24, by starting the first driving motor 17, the first driving motor 17 rotates to drive the first rotating shaft 18 to rotate, and the rotation of the first rotating shaft 18 drives the fixed slider 19 to move The fixed slider 19 moves to drive the second drive motor 1901 to move, so that the stirring range of the spiral column 22 can be adjusted, and the second drive motor 1901 is started at the same time. The rotation of the second drive motor 1901 can drive the locking chuck 20 and the second rotating shaft 21 to rotate, and the pharmaceutical intermediate slurry introduced into the interior is stirred, thereby improving the filtration speed and preventing a large amount of pharmaceutical intermediate slurry from accumulating on the surface of the filter screen 15, thereby affecting the filtration efficiency. At the same time, the air pressurizer 24 is started, and the air pressurizer 24 is started to provide positive pressure to the inside of the filter box 1, thereby pressing the pharmaceutical intermediate slurry inside, thereby squeezing out the moisture therein, which is beneficial to the later processing. At the same time, after the air pressurizer 24 pressurizes the inside, the pressure positively impacts the surface of the extrusion block 12, thereby avoiding excessive contact pressure between the filter screen 15 and the pharmaceutical intermediate due to the pressurization, resulting in large particles of pharmaceutical intermediates being stuck in the middle of the filter screen 15, thereby affecting the normal use of the filter screen 15 and reducing the service life of the filter screen 15.

[0030] Among them, both ends of the fixed slider 19 and the second drive motor 1901 are in contact with the two sides of the interior of the fixed top block 4, and the pressurization port of the air pressurizer 24 passes through the filter box body 1 and extends to the interior of the filter box body 1. A plurality of ventilation holes are provided on one side of the fixed top block 4. The fixed slider 19 and the second drive motor 1901 are in contact with the two sides of the interior of the fixed top block 4 to limit the fixed slider 19 and the second drive motor 1901 to prevent the fixed slider 19 and the second drive motor 1901 from rotating synchronously with the first rotating shaft 18 and being unable to move up and down. The ventilation holes provided in the fixed top block 4 can enable the air pressurizer 24 to effectively exhaust air when the pressure is released.

[0031] Among them, the lifting assembly includes a plurality of second fixed blocks 26, and the plurality of second fixed blocks 26 are respectively fixedly connected to one side of the plurality of supporting legs 3. A lifting cylinder 27 is fixedly connected to the middle of the second fixed block 26, and a locking nut 28 is threadedly connected to the top of the lifting cylinder 27. The locking nut 28 contacts the surface of the second fixed block 26. A third fixed block 29 is fixedly connected to the bottom of the lifting cylinder 27, and an L-shaped support block 30 is fixedly connected to the bottom of the third fixed block 29. A rectangular support plate 31 is fixedly connected to the top of one side of the L-shaped support block 30, and the rectangular support plate 31 contacts the first chassis 8. After the filtration is completed, it can The first chassis 8 can follow the lifting cylinder 27 to descend, so that the first chassis 8 can be driven to move out of the interior of the filter box 1, which is convenient for observing, repairing and cleaning the internal components. At the same time, since the device does not contact the main force-bearing surface of the pharmaceutical intermediate through the filter screen 15, the difficulty of cleaning the filter screen 15 is reduced, and the possibility of blocking inside the filter screen 15 is greatly reduced, thereby improving the service life of the filter screen 15. In addition, since the contact surface of the extrusion block 12 and the pharmaceutical intermediate is a smooth metal surface, not a porous structure such as the filter screen 15, it is more difficult for the pharmaceutical intermediate to stay and it is more convenient to clean.

[0032] Among them, the rotating assembly includes a first hinge block 32, the first hinge block 32 is fixedly connected to the supporting leg 3, the middle part of the first hinge block 32 is rotatably connected to the second hinge shaft 33, one side of the second hinge shaft 33 is fixedly connected to a hydraulic rod 34, one end of the hydraulic rod 34 is fixedly connected to a second hinge shaft 36, both ends of the second hinge shaft 36 are fixedly connected to a second hinge block 37, the second hinge shaft 36 is movably hinged to the second hinge block 37, the chassis hydraulic clamp 6 is pushed to rotate by the hydraulic rod 34, the lock of the first chassis 8 is released, so that the first chassis 8 can be lifted and lowered, thereby facilitating cleaning and disassembly, and at the same time, the first chassis 8 can be rotated to limit the position when it enters the interior of the filter box 1.

[0033] Among them, a through hole is opened on one side of the filter box body 1, and a discharge sealing circular plate 38 is slidably connected inside the through hole, a connecting rod 39 is fixedly connected to one side of the discharge sealing circular plate 38, and a third hinge block 40 is fixedly connected to one side of the filter box body 1. The connecting rod 39 is movably hinged to the third hinge block 40. After the material is dried, the discharge sealing circular plate 38 can be opened to discharge the material to complete the work.

[0034] Among them, a hot air inlet 41 is fixedly connected to one side of the top of the filter box 1, and the hot air inlet 41 is connected to a cavity set inside the filter box 1. Hot air enters the cavity through the hot air inlet 41 to heat and dry the inside of the filter box 1. The cavity surrounds the inside of the filter box 1, so that the hot air can completely cover the inside of the filter box 1, which can improve the drying effect.

[0035] Among them, the inner surface of the filter 15 is flush with the inner surface of the filter box 1, and a fixed groove is opened inside the filter box 1. A certain gap is left between the outer side of the filter 15 and the fixed groove. The gap in the filter 15 allows the filtered water to flow out through the water outlet chute 10 and the water outlet 16 without obstruction.

[0036] Among them, a spiral cut is provided on the outer side of the bottom of the spiral column 22, one side surface of the stirring rod 23 is flush with the bottom plane, and the other side surface of the stirring rod 23 is an inclined surface. The spiral cut can make the internal structure compact when the pharmaceutical intermediate is pressurized into a cake shape, and the thread cut can be better screwed into the interior of the pharmaceutical intermediate, and it is broken up by the stirring rod 23, so as to achieve better drying effect and more convenient discharge.

[0037] Working principle:

[0038] After the pharmaceutical intermediate slurry is injected into the filter housing 1 from the feed valve port 5, the pharmaceutical intermediate slurry will stay on the surface of the extrusion block 12. At this time, due to the obstruction of the installation groove 13, the pharmaceutical intermediate will stay on the surface of the extrusion block 12, and the excess water will pass through the installation groove 13 and flow into the inside of the installation groove 13. Due to gravity, the water will flow out along the water outlet 16 inside the installation groove 13 to complete the filtration.

[0039] At this time, the first drive motor 17 is started, and the rotation of the first drive motor 17 drives the first rotating shaft 18 to rotate, and the rotation of the first rotating shaft 18 drives the fixed slider 19 to move, and the movement of the fixed slider 19 drives the second drive motor 1901 to move, so that the stirring range of the spiral column 22 can be adjusted, and the second drive motor 1901 is started at the same time, and the rotation of the second drive motor 1901 can drive the locking chuck 20 and the second rotating shaft 21 to rotate, so as to stir the raw pulp of the pharmaceutical intermediate introduced into the inside, thereby improving the filtration speed and preventing a large amount of raw pulp of the pharmaceutical intermediate from accumulating on the surface of the filter screen 15 to affect the filtration efficiency, and at the same time, the air pressurizer 24 is started, and the air pressurizer 24 sucks air from its own air inlet Air is delivered to the inside of the filter box 1 through the pressurizing port, and positive pressure is provided to the inside of the filter box 1, so that the raw pharmaceutical intermediate slurry inside is pressed and evenly distributed on the surface of the pharmaceutical intermediate through the internal positive pressure, so that the moisture therein is squeezed out by pressure, and the moisture content therein is reduced, which is beneficial to the later drying and subsequent processing. At the same time, after the air pressurizer 24 pressurizes the inside, the positive impact of the pressure will act on the surface of the extrusion block 12, avoiding excessive contact pressure between the filter screen 15 and the pharmaceutical intermediate due to pressurization, resulting in large particles of pharmaceutical intermediates being stuck in the middle of the filter screen 15, so that it does not affect the normal use of the filter screen 15 and greatly improves the service life of the filter screen 15;

[0040] After filtering to a certain extent, hot air is allowed to enter the cavity through the hot air inlet 41 to heat and dry the inside of the filter box 1. The cavity surrounds the inside of the filter box 1, so that the hot air can completely cover the inside of the filter box 1, which can improve the drying effect. At this time, the first drive motor 17 and the second drive motor 1901 can be started at the same time. The first drive motor 17 and the second drive motor 1901 drive the spiral column 22 and the stirring rod 23. When the pharmaceutical intermediate is pressurized into a cake shape, the internal structure is compact and the thread cut can be better screwed into the inside of the pharmaceutical intermediate, and it is broken up by the stirring rod 23 to achieve better drying effect and more convenient discharging.

[0041] After the filtration is completed, the hydraulic rod 34 is started, and the hydraulic rod 34 pulls the chassis hydraulic clamp 6 backward. When the hydraulic rod 34 is pulled backward, since the second hinge block 37 is fixedly connected to the chassis hydraulic clamp 6, and the second hinge block 37 is hinged to the hydraulic rod 34, the hydraulic rod 34 will pull the second hinge block 37 to move when it is pulled backward. The movement of the second hinge block 37 is due to the matching relationship between the chassis hydraulic clamp 6 and the filter box 1. Therefore, the hydraulic rod 34 pulling backward can drive the chassis hydraulic clamp 6 to rotate along the filter box 1. After the chassis hydraulic clamp 6 rotates, the multiple groups of first clamping blocks 7 inside it will rotate to the top of the gaps between the multiple groups of second clamping blocks 9 respectively. At this time, the chassis hydraulic clamp 6 loses the support of the first clamping block 7. The chassis hydraulic clamp 6 is affected by the gravity factor and its weight is concentrated on the top of the rectangular support plate 31. At this time, the lifting cylinder 27 starts to drive the chassis hydraulic The clamp 6 descends and detaches from the interior of the filter box 1, and the chassis hydraulic clamp 6 and the interior of the filter box 1 can be further cleaned to prevent the pharmaceutical intermediates from sticking to the inner wall of the filter box 1 and the extrusion surface of the extrusion block 12, and to avoid the pharmaceutical intermediates from being affected by subsequent processing and use due to incomplete internal cleaning; after the cleaning and inspection tasks are completed, the chassis hydraulic clamp 6 is placed on the surface of the rectangular support plate 31 and the lifting cylinder 27 is started to drive the chassis hydraulic clamp 6 to rise until the first clamp block 7 is slightly higher than the second clamp block 9. At this time, the hydraulic rod 34 is started to push the chassis hydraulic clamp 6 forward to rotate the chassis hydraulic clamp 6. The rotation of the chassis hydraulic clamp 6 drives the second clamp block 9 to rotate and intersect with the first clamp block 7 so that the first clamp block 7 can support the second clamp block 9, thereby fixing the position of the chassis hydraulic clamp 6 to ensure the stability of the filtration process. After the fixing is completed, the filtration and use can be continued.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for producing pharmaceutical intermediates, comprising a filtering box (1), a plurality of first fixed blocks (2) are fixedly connected to the outside of the filtering box (1), a plurality of first fixed blocks (2) are fixedly connected to the bottom of the plurality of first fixed blocks (2) with support legs (3), a fixed top block (4) is fixedly connected to the top of the filtering box (1), a feed valve port (5) is provided on one side of the fixed top block (4), the feed valve port (5) is fixedly connected to the filtering box (1), the feed valve port (5) passes through the top of the filtering box (1), and a chassis hydraulic clamp (6) is threadedly connected to the bottom of the filtering box (1), characterized in that: A first clamping block (7) is fixedly connected inside the chassis hydraulic clamp (6), a first chassis (8) is arranged inside the first clamping block (7), a second clamping block (9) is fixedly connected outside the first chassis (8), the first clamping block (7) and the second clamping block (9) are arranged alternately and the second clamping block (9) is longer than the first clamping block (7), a water outlet chute (10) is provided inside the first chassis (8), a plurality of support columns (11) are fixedly connected inside the water outlet chute (10), one end of the plurality of support columns (11) is fixedly connected to an extrusion block (12), and a mounting hole is provided inside the extrusion block (12). A mounting groove (13), wherein a plurality of springs (14) are fixedly connected inside the mounting groove (13), a filter screen (15) is fixedly connected to one end of the spring (14), and the filter screen (15) can be respectively fitted with the two sides of the mounting groove (13) on both sides when in a pop-up state, a water outlet (16) is fixedly connected to the bottom end of the middle part of the water outlet chute (10), and the top of the water outlet (16) is flush with the bottom of the water outlet chute (10), a stirring component is arranged inside the fixed top block (4), a plurality of lifting components are respectively arranged on one side of the plurality of support legs (3), and a rotating component is arranged on one side of the chassis hydraulic clamp (6); The stirring assembly comprises a first drive motor (17), the first drive motor (17) being fixedly connected to the top of the inner side of the fixed top block (4), the output end of the first drive motor (17) being fixedly connected to a first rotating shaft (18), one end of the first rotating shaft (18) being rotatably connected to the filter housing (1), the outer side of the first rotating shaft (18) being threadedly connected to a fixed slider (19), one side of the fixed slider (19) being fixedly connected to a second drive motor (1901), and the bottom end of the second drive motor (1901) being provided with a plurality of screw threads. A locking chuck (20) is fixedly connected to the bottom of the second driving motor (1901); a second rotating shaft (21) is fixedly connected to the inside of the locking chuck (20); a spiral column (22) is fixedly connected to the bottom of the second rotating shaft (21); stirring rods (23) are fixedly connected to both sides of the spiral column (22); an air pressurizer (24) is provided on one side of the second driving motor (1901); the air pressurizer (24) is fixedly connected to the filter box (1); and a pressure gauge (25) is fixedly connected to one side of the middle of the air pressurizer (24); Both ends of the fixed slider (19) and the second drive motor (1901) fit into the two sides of the interior of the fixed top block (4); the pressurizing port of the air pressurizer (24) passes through the filter box (1) and extends to the interior of the filter box (1); and a plurality of ventilation holes are provided on one side of the fixed top block (4).

2. A filtering device for producing pharmaceutical intermediates according to claim 1, characterized in that: The lifting assembly comprises a plurality of second fixed blocks (26), the plurality of second fixed blocks (26) being fixedly connected to one side of a plurality of supporting legs (3), a lifting cylinder (27) being fixedly connected to the middle of the second fixed block (26), a locking nut (28) being threadedly connected to the top of the lifting cylinder (27), the locking nut (28) being in contact with the surface of the second fixed block (26), a third fixed block (29) being fixedly connected to the bottom of the lifting cylinder (27), an L-shaped supporting block (30) being fixedly connected to the bottom of the third fixed block (29), a rectangular supporting plate (31) being fixedly connected to the top of one side of the L-shaped supporting block (30), the rectangular supporting plate (31) being in contact with the first chassis (8).

3. A filtering device for producing pharmaceutical intermediates according to claim 2, characterized in that: The rotating assembly comprises a first hinge block (32), the first hinge block (32) being fixedly connected to the supporting leg (3), a second hinge shaft (33) being rotatably connected to the middle of the first hinge block (32), a hydraulic rod (34) being fixedly connected to one side of the second hinge shaft (33), one end of the hydraulic rod (34) being fixedly connected to a second hinge shaft (36), both ends of the second hinge shaft (36) being fixedly connected to second hinge blocks (37), and the second hinge shaft (36) and the second hinge block (37) being movably hinged.

4. A filtering device for producing pharmaceutical intermediates according to claim 3, characterized in that: A through hole is provided on one side of the filter box (1), a discharge sealing circular plate (38) is slidably connected inside the through hole, a connecting rod (39) is fixedly connected to one side of the discharge sealing circular plate (38), a third hinge block (40) is fixedly connected to one side of the filter box (1), and the connecting rod (39) is movably hinged to the third hinge block (40).

5. A filtering device for producing pharmaceutical intermediates according to claim 4, characterized in that: A hot air inlet (41) is fixedly connected to one side of the top of the filter box (1), and the hot air inlet (41) is connected to a cavity provided inside the filter box (1).

6. A filtering device for producing pharmaceutical intermediates according to claim 5, characterized in that: The inner surface of the filter screen (15) is flush with the inner surface of the filter box (1); a fixing groove is provided inside the filter box (1); and a gap is left between the outer side of the filter screen (15) and the fixing groove.

7. A filtering device for producing pharmaceutical intermediates according to claim 6, characterized in that: The outer side of the bottom of the spiral column (22) is provided with a spiral cut pattern, a surface on one side of the stirring rod (23) is flush with the bottom plane, and a surface on the other side of the stirring rod (23) is an inclined surface.

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