CN114504851A - Filtering device and method for synthesizing HMDA - Google Patents
Filtering device and method for synthesizing HMDA Download PDFInfo
- Publication number
- CN114504851A CN114504851A CN202210075381.4A CN202210075381A CN114504851A CN 114504851 A CN114504851 A CN 114504851A CN 202210075381 A CN202210075381 A CN 202210075381A CN 114504851 A CN114504851 A CN 114504851A
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- box body
- piston cylinder
- inlet pipe
- liquid inlet
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- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000001914 filtration Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000002194 synthesizing effect Effects 0.000 title abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 63
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000007790 solid phase Substances 0.000 claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 15
- 238000007664 blowing Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 14
- 238000003786 synthesis reaction Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims description 12
- 239000012295 chemical reaction liquid Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000004705 High-molecular-weight polyethylene Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 6
- BTGRAWJCKBQKAO-UHFFFAOYSA-N adiponitrile Chemical compound N#CCCCCC#N BTGRAWJCKBQKAO-UHFFFAOYSA-N 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000009903 catalytic hydrogenation reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005235 decoking Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
Abstract
The invention discloses a filtering device and a filtering method for synthesizing HMDA (high molecular weight polyethylene) and comprises a box body, wherein the top of the box body is connected with a liquid inlet pipe, the bottom of the box body is provided with a liquid outlet, the side wall of the box body is provided with slag outlets which are distributed in an inclined manner, a filtering net which is matched with the slag outlets is arranged in the box body at the position corresponding to the slag outlets, the upper part of the liquid inlet pipe is connected with a plurality of sections of connecting pipe fittings, and filtering pieces are arranged in the connecting pipe fittings. The invention can effectively remove solid phase materials through twice filtration, has better filtration effect and reduces the working pressure of the filter screen.
Description
Technical Field
The invention belongs to the technical field of chemical product processing, and particularly relates to a filtering device and method for HMDA synthesis.
Background
In industrial production, HMDA is prepared by adopting an adiponitrile hydrogenation method and a method using adipic acid as a raw material, and the adiponitrile catalytic hydrogenation method is divided into a low pressure method and a high pressure method. The low-pressure method comprises the steps of taking adiponitrile as a raw material, taking skeleton nickel as a catalyst, taking ethanol as a solvent and taking sodium hydroxide as a cocatalyst, adding the adiponitrile into a proportioning tank according to a certain proportion, mixing, reacting at the temperature of 70-90 ℃ and under the pressure of 2-3 MPa to obtain a gas phase material, a liquid phase material and a solid phase material, filtering, feeding a reaction liquid into a distillation tower, distilling and rectifying, dealcoholizing, dehydrating, decoking, removing light and heavy components, and performing topping distillation to obtain a refined 1, 6-hexamethylenediamine product, wherein the yield can reach 97%. The solid phase materials in the reaction liquid can be filtered after the gas phase, the liquid phase and the solid phase materials pass through the filter screen, but when the solid phase materials cannot be timely and effectively cleaned on the filter screen, the filter screen is extremely easy to block, and the preparation efficiency of the HMDA is reduced.
Disclosure of Invention
The present invention is directed to provide a filtering apparatus and method for HMDA synthesis, which solve the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the filtering device for synthesizing the HMDA comprises a box body, wherein the top of the box body 1 is connected with a liquid inlet pipe, a liquid outlet is formed at the bottom of the box body, slag outlets which are distributed in an inclined mode are formed in the side wall of the box body, a filtering net which is matched with the slag outlets is arranged in the box body at a position corresponding to the slag outlets, and the upper part of the liquid inlet pipe is connected with a plurality of sections of connecting pipe fittings; the rotary sealing sets up the rotating member between two connecting tube spare, the fixed double-screw bolt that sets up of rotating member lower extreme, be provided with the side pipe on the connecting tube spare lateral wall of rotating member below, the inside fixed hemispherical coarse filtration piece that sets up of connecting tube spare below the rotating member, the threaded ring of the coarse filtration piece of the lower part threaded connection of double-screw bolt, the coarse filtration piece is still including being fixed in the solid fixed ring on the connecting tube spare inner wall, be provided with the coarse strainer between solid fixed ring and the threaded ring, the coarse strainer is made by the material that has the pliability, still set up by a plurality of support bars between solid fixed ring and the threaded ring, the support bar has elasticity, support bar and coarse strainer fixed connection.
Preferably, the rotating member comprises a rotating body in rotary sealing connection with the connecting pipe fitting and an annular body arranged on the periphery of the rotating body, the rotating body is provided with a cross-shaped supporting rib, the rotating body and the annular body are fixedly connected through a reinforcing rib, and the stud is fixed at the intersection part of the supporting rib and extends towards the direction of the coarse screen.
Preferably, two sliding rods are fixedly connected between two side walls in the box body along the horizontal direction, sliding blocks are sleeved on the two sliding rods in a sliding mode, and cleaning brushes attached to the filter screen are fixedly installed at the bottoms of the sliding blocks; a first piston cylinder and a second piston cylinder which are identical in specification are arranged in parallel above the sliding block in the box body, a first piston is arranged in the first piston cylinder in a sliding mode, a second piston is arranged in the second piston cylinder in a sliding mode, a second transmission rope connected with the right end of the second piston penetrates through the end portion of the second piston cylinder and then is connected with the right end of the sliding block, a first transmission rope connected with the left end of the first piston penetrates through the end portion of the first piston cylinder and then is connected with the left end of the sliding block, the first piston and the second piston correspond to the positions of the first piston cylinder and the second piston cylinder respectively, the first piston and the second piston synchronously slide in the first piston cylinder and the second piston cylinder respectively and act on the sliding block, and therefore the cleaning brush on the sliding block can slide in a circulating and reciprocating mode along the upper end of the filter screen.
Preferably, the sliding of the first and second pistons in the first and second piston cylinders, respectively, is pneumatically driven.
Preferably, the center of the left end of the second piston is connected with a second air pipe communicated with the inside of the second piston, the center of the right end of the first piston is connected with a first air pipe communicated with the inside of the first piston, two elastic air blowing devices with the same specification are symmetrically installed inside the liquid inlet pipe, and the tail ends of the second air pipe and the first air pipe are communicated with the inside of the corresponding elastic air blowing devices after penetrating through the liquid inlet pipe respectively.
Preferably, the elasticity aerating device is including fixing the second fixed plate on the inlet tube inner wall along the horizontal direction, the flexible gasbag of top fixedly connected with of second fixed plate, flexible gasbag's top fixedly connected with connecting plate, the equal fixedly connected with gag lever post in both sides edge of second fixed plate, connecting plate and gag lever post sliding connection, the top fixedly connected with stopper of gag lever post, the cover is equipped with the spring on the gag lever post, the both ends butt respectively on second fixed plate and connecting plate of spring, first trachea and second trachea link to each other with corresponding flexible gasbag respectively.
Preferably, a semicircular baffle is intermittently and rotatably mounted on the inner wall of the liquid inlet pipe and above the elastic air blowing device, and the projection surface of the semicircular baffle along the vertical direction can cover the corresponding elastic air blowing device.
Preferably, the semicircular baffle is fixedly connected with the lower end of the stud; or the outer side of the semicircular baffle is fixedly connected with an annular rack, the annular rack is installed on the inner wall of the liquid inlet pipe and is rotatably connected with the liquid inlet pipe, an air cylinder is fixedly installed in the box body along the horizontal direction, a piston end of the air cylinder is fixedly connected with a spur rack, and the spur rack penetrates through the outer wall of the liquid inlet pipe and is meshed with the annular rack in the liquid inlet pipe.
Preferably, a partition plate is arranged between the two elastic air blowing devices in the vertical direction and is fixedly connected with the inner wall of the liquid inlet pipe.
The invention also provides a filtering method for synthesizing HMDA, which adopts the filtering device for synthesizing HMDA and comprises the following steps:
step one, in an initial state, the coarse strainer is sunken downwards, mixed liquid is injected into the box body through a connecting pipe fitting and a liquid inlet pipe, reaction liquid is discharged from a liquid outlet at the bottom end of the box body through the coarse strainer and the filter screen, and solid-phase materials stay at the top ends of the coarse strainer and the filter screen;
and step two, rotating the rotating piece, enabling the threaded ring to move upwards along the stud, enabling the coarse strainer to bulge upwards, and enabling the mixed liquid to impact the coarse strainer to flush the solid-phase material into the side pipe and discharge the solid-phase material.
Compared with the prior art, the invention provides a filtering device and a filtering method for synthesizing HMDA, which have the following beneficial effects:
the invention can effectively remove solid phase materials through twice filtration, has better filtration effect and reduces the working pressure of the filter screen.
The invention can remove the solid phase material on the coarse filter screen by adjusting the state of the coarse filter screen, and has simple structure and convenient operation.
The two ends of a sliding block are respectively connected with a first transmission rope and a second transmission rope, the first transmission rope at the left end of the sliding block is connected with the left end of a first piston in a first piston cylinder, the second transmission rope at the right end of the sliding block is connected with the right end of a second piston in a second piston cylinder, extrusion force is applied to a first telescopic air bag or a second telescopic air bag through mixed liquid in a liquid inlet pipe, the first piston or the second piston slides in the corresponding piston cylinder, the first piston and the second piston synchronously slide in the first piston cylinder and the second piston cylinder in a reciprocating mode respectively, and a cleaning brush on the sliding block is driven to slide in a reciprocating mode along the upper end of a filter screen through the first transmission rope and the second transmission rope, so that solid-phase materials on the filter screen are timely removed, and the filter screen is always kept at the best in filtering effect.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic external view of an entire apparatus according to an embodiment of the present invention;
FIG. 2 is a first schematic three-dimensional cross-sectional view of an overall device in an embodiment of the invention;
FIG. 3 is a second schematic three-dimensional cross-sectional view of an overall device in an embodiment of the invention;
FIG. 4 is a schematic view showing the assembled position of the cylinder inside the casing in the embodiment of the present invention;
FIG. 5 is a schematic axial three-dimensional cross-sectional view of an inlet pipe according to an embodiment of the present invention;
FIG. 6 is a schematic radial three-dimensional cross-sectional view of a liquid inlet pipe in an embodiment of the present invention;
FIG. 7 is a schematic view of FIG. 5 with the diaphragm installed;
FIG. 8 is a schematic view of the structure of the first filter;
FIG. 9 is an enlarged view of the portion A in FIG. 8
FIG. 10 is a schematic view of a coarse strainer;
fig. 11 is a schematic structural view of the rotating member.
In the figure: 1. a box body; 2. a filter screen; 3. a slag discharge port; 4. a slider; 5. a cleaning brush; 6. a slide bar; 7. a first piston cylinder; 8. a second piston cylinder; 9. a first fixing plate; 10. a first piston; 11. a second piston; 12. a first drive line; 13. a second drive rope; 14. an electromagnetic valve; 15. a first air pipe; 16. A second air pipe; 17. a liquid inlet pipe; 18. a first telescopic air bag; 19. a second telescopic air bag; 20. a second fixing plate; 21. a connecting plate; 22. a limiting rod; 23. a spring; 24. a semicircular baffle plate; 25. an annular rack; 26. straight rack; 27. a cylinder; 28. a partition plate; 29. connecting pipe fittings; 30. a rotating member; 31. A stud; 32. a coarse filtration member; 33. a side tube; 34. a threaded ring; 35. a fixing ring; 36. coarse filtration; 37. A supporting strip; 38. reinforcing ribs; 39. supporting ribs; 40. a rotating body; 41. an annular body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the embodiments of the present invention.
Referring to fig. 1 to 7, the present embodiment provides a filtering apparatus for HMDA synthesis, which includes a box body 1, a liquid inlet pipe 17 is connected to the top of the box body 1, a liquid outlet is formed at the bottom of the box body 1, slag outlets 3 are formed on the side wall of the box body 1 and are distributed obliquely, a filtering net 2 adapted to the slag outlets 3 is disposed in the box body 1 at a position corresponding to the slag outlets 3, the upper portion of the liquid inlet pipe 17 is connected to a plurality of sections of connecting pipes 29, and coarse filtering members 32 are disposed in the connecting pipes 29.
The mixed liquor enters the box body 1 through the connecting pipe fitting 29 and the liquid inlet pipe 17, and is filtered by the coarse filter element 32 and the filter screen 2, so that the liquid is discharged from the bottom end of the box body 1, and the solid phase material stays on the coarse filter element 32 and the filter screen 2.
In order to timely remove the solid phase material on the coarse filter element 32 and the filter screen 2 and avoid the solid phase material from blocking the filter screen 2, the following scheme is proposed in the present embodiment.
Rotate between two connecting tube spare 29 and seal and set up rotating member 30, the fixed double-screw bolt 31 that sets up of rotating member lower extreme, be provided with side pipe 33 on the connecting tube spare 29 lateral wall of rotating member 30 below, the inside fixed hemispherical coarse filter 36 that sets up of connecting tube spare 29 below rotating member 30, the threaded ring of the coarse filter 32 of the lower part threaded connection of double-screw bolt 31, the coarse filter is still including being fixed in the solid fixed ring 35 on the connecting tube spare 29 inner wall, be provided with coarse strainer 36 between solid fixed ring 35 and the threaded ring 34, coarse strainer 36 is made by the material that has the pliability, still set up by a plurality of support bars 37 between solid fixed ring 35 and the threaded ring 34, support bar 37 has elasticity, support bar 37 and coarse strainer 36 fixed connection.
The rotating member comprises a rotating body 40 which is connected with the connecting pipe fitting 29 in a rotating and sealing way and an annular body 41 which is arranged on the periphery of the rotating body 40, the rotating body is provided with a cross-shaped supporting rib 39, the rotating body 40 is fixedly connected with the annular body 41 through a reinforcing rib 38, and the stud 31 is fixed at the intersection part of the supporting rib 39 and extends towards the direction of the coarse filter screen 36.
Two slide bars 6 of edge horizontal direction fixedly connected with between two inside lateral walls of box 1, sliding sleeve has been connected with sliding block 4 on two slide bars 6, and sliding block 4's bottom fixed mounting has the cleaning brush 5 of laminating mutually with filter screen 2, and sliding block 4 slides on slide bar 6, and then drives cleaning brush 5 and remove along filter screen 2 surfaces.
The inside parallel mount that is located sliding block 4 of box 1 has the same first piston cylinder 7 and the same second piston cylinder 8 of specification, and the blast pipe is installed in the outside of second piston cylinder 8, the blast pipe communicates with second piston cylinder 8, installs solenoid valve 14 on the blast pipe, and the first fixed plate 9 of the equal fixedly connected with in both ends of first piston cylinder 7 and second piston cylinder 8, and first fixed plate 9 extends and links to each other with the inner wall of box 1 is fixed along vertical direction. A first piston 10 is slidably mounted in the first piston cylinder 7, a second piston 11 is slidably mounted in the second piston cylinder 8, a second transmission rope 13 connected to the right end of the second piston 11 penetrates through the end portion of the second piston cylinder 8 and then is connected with the right end of the sliding block 4, a first transmission rope 12 connected to the left end of the first piston 10 penetrates through the end portion of the first piston cylinder 7 and then is connected with the left end of the sliding block 4, the positions of the first piston 10 and the second piston 11 in the first piston cylinder 7 and the second piston cylinder 8 correspond to each other, the first piston 10 and the second piston 11 synchronously slide in the first piston cylinder 7 and the second piston cylinder 8 in a reciprocating mode respectively and act on the sliding block 4, and therefore the cleaning brush 5 on the sliding block 4 slides in a reciprocating mode along the upper end of the filter screen 2 in a circulating mode.
The sliding of the first piston 10 and the second piston 11 in the present invention in the first piston cylinder 7 and the second piston cylinder 8, respectively, is pneumatically driven.
Specifically, the center of the left end of the second piston 11 is connected with a second air pipe 16 communicated with the inside of the second piston, the center of the right end of the first piston 10 is connected with a first air pipe 15 communicated with the inside of the first piston, two elastic air blowing devices with the same specification are symmetrically installed inside the liquid inlet pipe 17, the tail ends of the second air pipe 16 and the first air pipe 15 penetrate through the liquid inlet pipe 17 respectively and then are communicated with the inside of the corresponding elastic air blowing device, and air is blown into the first piston 10 or the second piston 11 through the elastic air blowing devices so as to drive the first piston to slide along the horizontal direction.
The elastic air blowing device in the application comprises a second fixing plate 20 fixed on the inner wall of the liquid inlet pipe 17 along the horizontal direction, a telescopic air bag is fixedly connected to the top of the second fixing plate 20, a connecting plate 21 is fixedly connected to the top end of the telescopic air bag, limiting rods 22 are fixedly connected to both side edges of the second fixing plate 20, the connecting plate 21 is in sliding connection with the limiting rods 22, a limiting block is fixedly connected to the top end of the limiting rods 22, a spring 23 is sleeved on the limiting rods 22, both ends of the spring 23 are respectively abutted against the second fixing plate 20 and the connecting plate 21, a first air pipe 15 and a second air pipe 16 are respectively connected with the corresponding telescopic air bags, air can be blown into the first piston cylinder 7 or the second piston cylinder 8 by compressing the telescopic air bags, the first piston 10 and the second piston 11 are driven to move forwards, and the telescopic air bags recover the deformation process under the action of the spring 23, it can suck back the gas in the first piston cylinder 7 or the second piston cylinder 8, so as to make the first piston 10 or the second piston 11 move reversely. In order to facilitate understanding of the technical solution in the present application, the telescopic air bag communicated with the first air tube 15 is set as a first telescopic air bag 18, and the telescopic air bag communicated with the second air tube 16 is set as a second telescopic air bag 19.
In addition, in order to realize the alternate work of the two elastic air blowing devices, a semicircular baffle plate 24 is arranged on the inner wall of the liquid inlet pipe 17 and above the elastic air blowing devices in an intermittent rotating mode, the projection surface of the semicircular baffle plate 24 in the vertical direction can cover the corresponding elastic air blowing device, when the semicircular baffle plate 24 is positioned above one of the elastic air blowing devices, the telescopic air bag recovers deformation under the action of the spring 23, liquid acts on the other elastic air blowing device, the corresponding telescopic air bag is compressed, and the two elastic air blowing devices perform reciprocating alternate work.
The upper part of the semicircular baffle plate 24 can be fixedly connected with a stud 31. The following scheme can also be adopted: the outside fixedly connected with annular rack 25 of semicircle baffle 24, annular rack 25 is installed in the inner wall of feed liquor pipe 17 and is rotated and be connected with it, the inside of box 1 is along horizontal direction fixed mounting has cylinder 27, the piston end fixedly connected with spur rack 26 of cylinder 27, spur rack 26 passes the outer wall of feed liquor pipe 17 and meshes rather than inside annular rack 25 mutually, the intermittent type formula of semicircle baffle 24 is then realized through cylinder 27 drive, wherein, cylinder 27 can automatic stop after extending or shortening certain distance, and cylinder 27 is once whenever extending or shortening, spur rack 26 acts on annular rack 25 and just in time rotates 180.
Be provided with baffle 28 along vertical direction between two elasticity air-blowing devices, baffle 28 links to each other with the inner wall of feed liquor pipe 17 is fixed, can make first flexible gasbag 18 and second flexible gasbag 19 be located two independent spaces like this, prevents that fluid impact from making the deformation of first flexible gasbag 18 or second flexible gasbag 19 of semicircle baffle 24 below, influence the operation process.
The invention provides application of a filter device for synthesizing HMDA.
In the initial state, the coarse strainer 32 is depressed downward, the mixed solution is injected into the case 1 through the connecting pipe 29 and the liquid inlet pipe 17, the reaction solution is discharged from the liquid discharge port at the bottom end of the case 1 through the coarse strainer and the filter screen 2, and the solid phase material stays at the top ends of the coarse strainer 32 and the filter screen 2;
when the rotary member 30 is rotated by the ring 41 and the screw 31 is rotated by the support rib 39, the screw ring 34 moves upward along the stud 31, the coarse strainer 32 is raised upward, and the mixed liquid hits the coarse strainer 32 to flush the solid phase material into the side pipe 33 and is discharged.
In the initial state, as shown in the figures, the cleaning brush 5 is positioned at the left side of the filter screen 2; the first piston 10 is positioned at the right end of the first piston cylinder 7, and the second piston 11 is positioned at the right end of the second piston cylinder 8; the connecting plate 21 is positioned at the top end of the limiting rod 22 under the elastic action of the spring 23; neither the first bellows 18 nor the second bellows 19 is compressed; a semi-circular flap 24 is located above the first telescopic bladder 18.
Before use, the liquid inlet pipe 17 is connected with an external liquid storage tank through a pump assembly and a pipeline. The material collecting box is arranged at the right side of the box body 1 and below the slag discharging port 3. A liquid collecting tank is arranged below the liquid outlet at the bottom end of the box body 1.
Before the mixed liquid enters the box body 1, the electromagnetic valve 14 needs to be opened to be in an exhaust state. The mixed liquor enters the box body 1 through the liquor inlet pipe 17, the liquid is discharged from the liquor outlet at the bottom end of the box body 1 through the filter screen 2, and the solid-phase material stays on the filter screen 2. In the process that the mixed liquid passes through the liquid inlet pipe 17, the liquid flows to enable the connecting plate 21 of the second telescopic air bag 19 to be impacted and pushed by the liquid, so that the connecting plate 21 moves downwards, the spring 23 is compressed, the second telescopic air bag 19 is extruded, the gas in the second telescopic air bag enters the second piston cylinder 8 through the second air pipe 16, and the electromagnetic valve 14 is in an open state, so that the part of gas can be discharged to the outside of the second piston cylinder 8 through the electromagnetic valve 14.
The solenoid valve 14 is then closed, leaving the second piston cylinder 8 in a sealed state. At this time, the second air bag 19 is in a squeezed state, and the first air bag 18 is shielded by the semicircular baffle 24, so that the flow impact of the liquid does not act on the connecting plate 21 of the first air bag 18, and the first air bag 18 maintains the original state.
If the semicircular baffle plate 24 is fixed with the stud 31, the semicircular baffle plate 24 rotates along with the stud 31. Can rotate at a proper angle according to actual needs. Or, the starting cylinder 27 is extended, the cylinder 27 drives the rack 26 to move, and the semicircular baffle plate 24 is rotated by 180 degrees and then stopped.
The semicircular baffle 24 is now above the second telescopic airbag 19. The connecting plate 21 on the first telescopic air bag 18 is impacted by liquid and moves downwards, so that the first telescopic air bag 18 is extruded, and the gas in the first telescopic air bag 18 enters the first piston cylinder 7 through the first gas pipe 15 to push the first piston 10 to move leftwards and finally move to the left end of the first piston cylinder 7. Meanwhile, the connecting plate 21 above the second telescopic air bag 19 is not impacted by liquid any more, the connecting plate 21 moves upwards under the elastic action of the spring 23, so that the second telescopic air bag 19 is restored to the original state, in the process, the second telescopic air bag 19 sucks gas in the second piston cylinder 8 through the second air pipe 16, the second piston 11 moves leftwards and finally moves to the left end of the second piston cylinder 8, the second piston 11 pulls the sliding block 4 to move rightwards through the second transmission rope 13, the sliding block 4 drives the cleaning brush 5 to move rightwards to clean the filter screen 2, and solid-phase materials on the filter screen 2 are discharged to the outside from the slag discharge port 3.
When slider 4 removed the right-hand member of slide bar 6, can touch the limit switch on the slide bar 6, limit switch can start cylinder 27 and shorten, and cylinder 27 drives rack 26 and removes, and then stops after making semicircle baffle 24 rotatory 180 degrees, and semicircle baffle 24 is in the top of first flexible gasbag 18 this moment, what need explain is, the known prior art is adopted with the electrical connection of cylinder 27 to limit switch in this application, and its principle is just no longer described. The second bellows 19 is pressed by the fluid, and the gas pushes the second piston 11 to move to the right through the second gas pipe 16, and finally moves to the right end of the second piston cylinder 8. Meanwhile, the first telescopic air bag 18 can restore to the original state under the action of the spring 23, the first telescopic air bag 18 sucks back gas in the first piston cylinder 7 through the first air pipe 15, so that the first piston 10 moves rightwards and finally moves to the right end of the first piston cylinder 7, the first piston 10 pulls the sliding block 4 to move leftwards through the first transmission rope 12, and the sliding block 4 drives the cleaning brush 5 to move leftwards to restore.
When the sliding block 4 moves to the left end of the sliding rod 6, the sliding block touches a limit switch on the sliding rod 6, the limit switch starts the air cylinder 27 to extend, and the reciprocating operation is carried out until all the mixed liquid is filtered.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
- The filter device for HMDA synthesis comprises a box body (1), wherein the top of the box body (1) is connected with a liquid inlet pipe (17), a liquid outlet is formed at the bottom of the box body (1), slag outlets (3) which are distributed in an inclined manner are formed in the side wall of the box body (1), a filter screen (2) which is matched with the slag outlets (3) is arranged in the box body (1) at a position corresponding to the slag outlets (3), and the upper part of the liquid inlet pipe (17) is connected with a plurality of sections of connecting pipe fittings (29);the method is characterized in that: rotate between two connecting tube spare (29) and seal and set up rotating member (30), the fixed double-screw bolt (31) that sets up of rotating member lower extreme, be provided with side tube (33) on connecting tube spare (29) lateral wall of rotating member (30) below, connecting tube spare (29) inside fixed hemispherical coarse filter (36) that sets up of rotating member (30) below, the threaded ring of the coarse filter (32) of lower part threaded connection of double-screw bolt (31), coarse filter still is including fixed ring (35) on being fixed in connecting tube spare (29) inner wall, be provided with coarse strainer (36) between fixed ring (35) and threaded ring (34), coarse strainer (36) are made by the material that has the pliability, still set up between fixed ring (35) and threaded ring (34) by a plurality of support bars (37), support bar (37) have elasticity, support bar (37) and coarse strainer (36) fixed connection.
- 2. The HMDA synthesis filter device according to claim 1, wherein the rotary member comprises a rotary body (40) rotatably and hermetically connected to the connecting pipe member (29), and an annular body (41) provided on the periphery of the rotary body (40), the rotary body is provided with a cross-shaped support rib (39), the rotary body (40) and the annular body (41) are fixedly connected by a reinforcing rib (38), and the stud (31) is fixed to the intersection of the support rib (39) and extends toward the strainer (36).
- 3. The HMDA synthesis filter apparatus of claim 2,two sliding rods (6) are fixedly connected between two side walls in the box body (1) along the horizontal direction, sliding blocks (4) are slidably sleeved on the two sliding rods (6), and cleaning brushes (5) attached to the filter screen (2) are fixedly installed at the bottoms of the sliding blocks (4); a first piston cylinder (7) and a second piston cylinder (8) with the same specification are arranged in parallel above the sliding block (4) in the box body (1), a first piston (10) is arranged in the first piston cylinder (7) in a sliding manner, a second piston (11) is arranged in the second piston cylinder (8) in a sliding manner, a second transmission rope (13) connected with the right end of the second piston (11) penetrates through the end part of the second piston cylinder (8) and then is connected with the right end of the sliding block (4), a first transmission rope (12) connected with the left end of the first piston (10) penetrates through the end part of the first piston cylinder (7) and then is connected with the left end of the sliding block (4), the positions of the first piston (10) and the second piston (11) in the first piston cylinder (7) and the second piston cylinder (8) correspond to each other, and the first piston (10) and the second piston (11) respectively act on the sliding block (4) in a synchronous reciprocating manner in the first piston cylinder (7) and the second piston cylinder (8), so that the cleaning brush (5) on the sliding block (4) slides along the upper end of the filter screen (2) in a reciprocating way.
- 4. The HMDA synthesis filter device according to claim 3, characterized in that: the sliding of the first piston (10) and the second piston (11) in the first piston cylinder (7) and the second piston cylinder (8), respectively, is driven pneumatically.
- 5. The HMDA synthesis filter device according to claim 4, characterized in that: the center of the left end of the second piston (11) is connected with a second air pipe (16) communicated with the inside of the second piston, the center of the right end of the first piston (10) is connected with a first air pipe (15) communicated with the inside of the first piston, two elastic air blowing devices with the same specification are symmetrically installed inside the liquid inlet pipe (17), and the tail ends of the second air pipe (16) and the first air pipe (15) are communicated with the inside of the corresponding elastic air blowing devices after respectively penetrating through the liquid inlet pipe (17).
- 6. The HMDA synthesis filter device according to claim 5, characterized in that: elasticity air-blowing device is including fixing second fixed plate (20) on feed liquor pipe (17) inner wall along the horizontal direction, the flexible gasbag of top fixedly connected with of second fixed plate (20), the top fixedly connected with connecting plate (21) of flexible gasbag, the equal fixedly connected with gag lever post (22) in both sides edge of second fixed plate (20), connecting plate (21) and gag lever post (22) sliding connection, the top fixedly connected with stopper of gag lever post (22), the cover is equipped with spring (23) on gag lever post (22), the both ends difference butt of spring (23) is on second fixed plate (20) and connecting plate (21), first trachea (15) and second trachea (16) link to each other with corresponding flexible gasbag respectively.
- 7. The HMDA synthesis filter device according to claim 5 or 6, characterized in that: a semicircular baffle (24) is intermittently and rotatably arranged on the inner wall of the liquid inlet pipe (17) and above the elastic air blowing device, and the projection surface of the semicircular baffle (24) along the vertical direction can cover the corresponding elastic air blowing device.
- 8. The HMDA synthesis filter device according to claim 7, characterized in that: the semicircular baffle (24) is fixedly connected with the lower end of the stud (31);alternatively, the first and second electrodes may be,the outer side of the semicircular baffle plate (24) is fixedly connected with an annular rack (25), the annular rack (25) is installed on the inner wall of the liquid inlet pipe (17) and is rotatably connected with the inner wall, an air cylinder (27) is fixedly installed inside the box body (1) along the horizontal direction, a piston end of the air cylinder (27) is fixedly connected with a straight rack (26), and the straight rack (26) penetrates through the outer wall of the liquid inlet pipe (17) and is meshed with the annular rack (25) inside the liquid inlet pipe.
- 9. The HMDA synthesis filter device according to claim 5 or 6, characterized in that: a partition plate (28) is arranged between the two elastic air blowing devices along the vertical direction, and the partition plate (28) is fixedly connected with the inner wall of the liquid inlet pipe (17).
- 10. A filtration method for HMDA synthesis, which comprises using the filtration device for HMDA synthesis according to claim 1, characterized in that: the method comprises the following steps:step one, in an initial state, the coarse strainer (32) is sunken downwards, the mixed liquid is injected into the box body (1) through the connecting pipe fitting (29) and the liquid inlet pipe (17), the reaction liquid is discharged from a liquid discharge port at the bottom end of the box body (1) through the coarse strainer (32) and the filter screen (2), and the solid phase material stays at the top ends of the coarse strainer (32) and the filter screen (2);and step two, rotating the rotating piece (30), moving the threaded ring (34) upwards along the stud (31), enabling the coarse filter screen (32) to be bulged upwards, and enabling the mixed liquid to impact the coarse filter screen (32) to flush the solid-phase materials into the side pipe (33) and discharge the solid-phase materials.
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