Nano calcium carbonate filter pressing and drying equipment

Abstract

The invention discloses nano calcium carbonate filter pressing and drying equipment which comprises a rack, a filter plate assembly is mounted on the rack, a main beam seat is arranged below the rack, a hopper is fixed to the upper end of the main beam seat, and the upper end of the hopper is connected with the rack; two propelling plates are installed in the main beam base in a sliding mode, oil cylinder propellers are fixed to the two sides of the main beam base, and the output ends of the oil cylinder propellers are connected with the propelling plates. A plurality of drying plate units are arranged between the pushing plates in the main beam seat, and the drying plate units are arranged corresponding to the filter plate assemblies; a water squeezing mechanism is arranged in each drying plate unit, and the water squeezing mechanism is matched with the drying plate unit on the adjacent side to squeeze and press a calcium carbonate wet cake.

Description

Technical Field

[0001] The present invention belongs to the technical field of nano-calcium carbonate pressing preparation, and specifically relates to a nano-calcium carbonate pressure filtration and drying device. Background Art

[0002] Nano-calcium carbonate is an important inorganic chemical product, which is widely used in fields such as plastics, rubber, coatings, and papermaking. In order to improve its purity and performance, it is necessary to dehydrate the slurry after wet grinding during the production process; pressure filtration technology is an important link in the solid-liquid separation process, and its main function is to remove water from the slurry to obtain relatively dry solid particles. In the production of nano-calcium carbonate, the performance of the pressure filter directly affects the cost and efficiency of the subsequent drying process;

[0003] The traditional pressure filter for preparing calcium carbonate forms a filter cake with extremely high moisture content. More energy is required to evaporate the water during the subsequent drying process, which not only increases the production cost, but also prolongs the drying time and reduces the production efficiency; moreover, most pressure filters cannot assist in drying the calcium carbonate formed filter cake, and it is necessary to additionally introduce a special drying device to process the filter cake with high moisture content.

[0004] Therefore, it is necessary to provide a nano-calcium carbonate pressure filtration and drying device to solve the problems raised in the above background art. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A nano-calcium carbonate pressure filtration and drying device, which includes a frame, a filter plate assembly is installed on the frame, a main beam seat is arranged below the frame, a hopper is fixed at the upper end of the main beam seat, and the upper end of the hopper is connected to the frame;

[0006] Two push plates are slidably installed in the main beam seat, and oil cylinder thrusters are fixed on both sides of the main beam seat, and the output ends of each oil cylinder thruster are connected to the push plate; a plurality of drying plate units are arranged in the main beam seat between the push plates, and the drying plate units are arranged corresponding to the filter plate assembly;

[0007] A water squeezing mechanism is arranged in each drying plate unit, and the water squeezing mechanism cooperates with the adjacent drying plate unit to squeeze and press the wet calcium carbonate cake.

[0008] Further, as a preference, the drying plate units on both sides are fixedly corresponding to the push plates, and telescopic brackets are symmetrically hinged on both sides of the drying plate unit. The telescopic brackets are arranged in an X-shaped structure, and the adjacent telescopic brackets are hinged to each other.

[0009] Further, as a preference, the drying plate unit includes:

[0010] A pressing plate, with an extension plate fixed above it, and forming grooves are provided in the middle of both end faces of the pressing plate;

[0011] A loading plate, horizontally fixed below one side of the pressing plate, a notch is formed in the other side of the pressing plate, and the loading plate on the adjacent pressing plate is in sliding fit with the notch;

[0012] A pressing disc, the center of which is arranged in one of the forming grooves, a shaft seat is rotatably connected to the middle of the pressing plate, and the pressing disc is fixed to the shaft seat;

[0013] Convex shaft blocks, evenly distributed on the surface of the pressing disc.

[0014] Further, as a preference, a gear ring is fixed outside the pressing disc, and a transmission gear is rotatably arranged inside the pressing plate, and the transmission gear is meshed with the gear ring;

[0015] A coupling is horizontally arranged on the pressing plate, and the coupling is coaxially fixed with the transmission gear; a shaft sleeve is arranged on the end face of the pressing plate far from the coupling, the shaft sleeve and the coupling are concentric structures, a pin is fixed on the side wall of the coupling, a guide groove is formed in the shaft sleeve, and the pin is in sliding connection with the guide groove.

[0016] Further, as a preference, a heat conduction cavity is formed in the middle of the shaft seat, a plurality of inner channels are distributed in the pressing disc, the heat conduction cavity is communicated with the inner channels, and air flow holes are arranged on the side walls of the convex shaft blocks, and the air flow holes are communicated with the inner channels;

[0017] Heat supply pipes are connected to the outside of the pressing plate, and a heat flow channel is arranged inside the pressing plate, and the heat supply pipes are communicated with the heat conduction cavity through the heat flow channel.

[0018] Further, as a preference, a plurality of the guide grooves are arranged in a circumferential manner, and the cross section of each guide groove is in an inclined line structure or a corrugated line structure;

[0019] A rotation notch is formed in the shaft sleeve; a rotating ring is fixed on the shaft sleeve, a driving part is fixed in the extension plate, and the output end of the driving part is connected and driven with the rotating ring through a belt.

[0020] Further, as a preference, the water squeezing mechanism includes:

[0021] An aluminum layer plate, covering the surface of the pressing plate;

[0022] Fixing plates, a plurality of which are circumferentially distributed, and each fixing plate is fixed in another forming groove of the pressing plate;

[0023] Slide rods, slidably connected to the fixing plates, and outer cut blocks are fixed to the ends of the slide rods;

[0024] The driving ring is coaxially and rotatably connected in the forming groove. A plurality of inclined grooves are formed in the driving ring. Fixed pins are fixed on each sliding rod, and the fixed pins are slidably connected with the inclined grooves.

[0025] Further, preferably, an installation plate is fixed inside the pressing plate. A rack plate is slidably connected to the installation plate. A tooth groove structure is provided on the outer wall of the driving ring, and the rack plate meshes with the driving ring.

[0026] A pulse cylinder is connected to the installation plate, and the output end of the pulse cylinder is connected to the rack plate.

[0027] Further, preferably, a transmission rod is also slidably arranged between adjacent sliding rods on the pressing plate. A telescopic guide rod is hinged on the fixing plate. One end of the telescopic guide rod is connected to the sliding rod, and the other end is connected to the transmission rod.

[0028] An inner cutting block is fixed at the end of the transmission rod.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] In the present invention, a drying plate unit is correspondingly arranged below the filter plate assembly. The drying plate unit can squeeze water and press the wet calcium carbonate cakes prepared and formed in the filter plate assembly, and perform uniform drying treatment, reducing the time and cost of process conversion, improving production efficiency. At the same time, through the combination of water squeezing and pressing and uniform drying, the residual moisture in the wet cakes can be effectively reduced, maintaining the integrity of their physical structure and avoiding damage caused by over-pressing or improper drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the structure of the main beam seat in the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the drying plate unit in the present invention;

[0034] Figure 4 It is a schematic diagram of the internal structure of the drying plate unit in the present invention;

[0035] Figure 5 It is a schematic diagram of the internal structure of the pressing plate in the present invention;

[0036] Figure 6 It is a schematic diagram of the structure of the shaft sleeve in the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the water squeezing mechanism in the present invention;

[0038] Figure 8 Schematic diagram of the internal cut blocks distribution on the transmission rod in the present invention;

[0039] In the figure: 1, frame; 11, filter plate assembly; 2, main beam seat; 21, hopper; 22, telescopic support; 23, push plate; 24, oil cylinder pusher; 3, drying plate unit; 31, pressing plate; 32, extension plate; 33, material-carrying plate; 34, pressing disc; 35, shaft seat; 36, convex shaft block; 37, transmission gear; 38, coupling; 4, water squeezing mechanism; 41, fixing plate; 42, sliding rod; 43, external cut block; 44, driving ring; 45, inclined groove; 46, fixing pin; 47, mounting plate; 48, rack plate; 49, pulse cylinder; 5, bushing; 51, guide groove; 52, rotation notch; 53, rotating ring; 54, driving part; 6, heat conduction cavity; 61, heating pipe; 62, heat flow channel; 7, transmission rod; 71, telescopic guide rod. Detailed implementation manners

[0040] Please refer to Figures 1-8 , in the embodiment of the present invention, a nano-calcium carbonate pressure filtration and drying device includes a frame 1, a filter plate assembly 11 is installed on the frame 1, a main beam seat 2 is arranged below the frame 1, a hopper 21 is fixed at the upper end of the main beam seat 2, and the upper end of the hopper 21 is connected to the frame 1; among them, the filter plate assembly 11 is composed of a plurality of filter plates arranged in combination, and each filter plate has a specific flow channel design inside for guiding the liquid to pass through and realizing solid-liquid separation. The filter plate material is usually selected from corrosion-resistant and high-strength materials (the above all belong to the prior art and will not be elaborated too much);

[0041] Two push plates 23 are slidably installed in the main beam seat 2, and oil cylinder pushers 24 are fixed on both sides of the main beam seat 2, and the output ends of the oil cylinder pushers 24 are connected to the push plates 23; a plurality of drying plate units 3 are arranged in the main beam seat 2 between the push plates 23, and the drying plate units 3 are arranged corresponding to the filter plate assembly 11; that is to say, each drying plate unit 3 can correspond to the filter plates in the filter plate assembly 11 one by one. Therefore, the calcium carbonate wet cake formed by pressure filtration in the frame 1 can enter between the drying plate units 3 for drying and pressing treatment;

[0042] A water squeezing mechanism 4 is arranged in each drying plate unit 3, and the water squeezing mechanism 4 cooperates with the adjacent drying plate unit 3 to squeeze and press the calcium carbonate wet cake, which is convenient for quickly removing the excess water and improving the subsequent drying efficiency.

[0043] In this embodiment, the drying plate units 3 on both sides are fixedly corresponding to the pushing plate 23. Both sides of the drying plate unit 3 are symmetrically hinged with telescopic brackets 22. The telescopic brackets 22 are arranged in an X-shaped structure, and adjacent telescopic brackets 22 are hinged to each other, so that the drying plate units 3 can be equally spaced and expanded under the simultaneous telescopic adjustment of the two telescopic brackets 22, facilitating the calcium carbonate wet cake to enter between adjacent drying plate units 3 correspondingly.

[0044] As a preferred embodiment, the drying plate unit 3 includes:

[0045] A pressing plate 31, with an extension plate 32 fixed above it. Forming grooves are provided in the middle of both end faces of the pressing plate 31; the two pressing plates 31 press and form the calcium carbonate wet cake through the forming grooves during the opposite sliding displacement.

[0046] A material loading plate 33, horizontally fixed below one side of the pressing plate 31. A notch is provided on the other side of the pressing plate 31, and the material loading plate 33 on the adjacent pressing plate 31 is slidably matched with the notch; the material loading plate 33 can temporarily load the calcium carbonate wet cake, that is, the calcium carbonate wet cake formed by pressure filtration in the frame 1 can slide between the pressing plates 31, and then the material loading plate 33 plays a role in loading it.

[0047] A pressing disc 34, centered in one of the forming grooves. A shaft seat 35 is rotatably connected to the middle of the pressing plate 31, and the pressing disc 34 is fixed to the shaft seat 35; the pressing disc 34 can more fully squeeze the water in the calcium carbonate wet cake by means of rotary pressing. Compared with the traditional static pressure filtration method, it can further reduce the moisture content of the filter cake.

[0048] Convex shaft blocks 36 are evenly distributed on the surface of the pressing disc 34. The calcium carbonate wet cake after spinning can adhere to the surface of the pressing disc 34 through the supporting effect provided by the convex shaft blocks 36, facilitating subsequent multiple water squeezing and pressing of the calcium carbonate wet cake.

[0049] In this embodiment, a gear ring is fixed outside the pressing disc 34, and a transmission gear 37 is rotatably arranged inside the pressing plate 31, and the transmission gear 37 meshes with the gear ring;

[0050] A coupling shaft 38 is horizontally arranged on the pressing plate 31, and the coupling shaft 38 is fixedly coaxially connected with the transmission gear 37; on one end face of the pressing plate 31 away from the coupling shaft 38, a bushing 5 is arranged, the bushing 5 and the coupling shaft 38 are concentric structures, a pin is fixed on the side wall of the coupling shaft 38, a guide groove 51 is formed in the bushing 5, and the pin is slidably connected with the guide groove 51. Among them, the bushings 5 on two adjacent pressing plates 31 can be slidably connected with the coupling shaft 38 correspondingly. Therefore, during the gradual extrusion of the calcium carbonate wet cake by the pressing plate 31, the coupling shaft 38 can rotate under the sliding connection action of the guide groove 51 and the pin, so that the pressing disc 34 on the pressing plate 31 deflects by a certain angle, realizing rotary pressing.

[0051] In this embodiment, a heat conduction cavity 6 is formed in the middle of the shaft seat 35, a plurality of inner channels are distributed in the pressing disc 34, the heat conduction cavity 6 is communicated with the inner channels, and air flow holes are provided on the side walls of the convex shaft blocks 36, and the air flow holes are communicated with the inner channels;

[0052] Heat supply pipes 61 are connected to the outside of the pressing plates 31, and heat flow channels 62 are arranged in the pressing plates 31. The heat supply pipes 61 are communicated with the heat conduction cavity 6 through the heat flow channels 62. Thus, after multiple water extrusion pressings, dry heat flow can be conveyed into the heat flow channels 62 through the heat supply pipes 61, and the dry heat flow realizes the uniform drying effect on the calcium carbonate wet cake through the air flow holes of each convex shaft block 36.

[0053] In this embodiment, a plurality of guide grooves 51 are arranged in a circular shape, and the cross section of each guide groove 51 is in an inclined line structure or a corrugated line structure; when the pin is slidably matched with the guide groove 51 in the inclined line structure, the pressing disc 34 on the pressing plate 31 can continuously rotate in one direction. At this time, guide grooves 51 with different slopes can be correspondingly selected to adjust the spinning pressure; when the pin is slidably matched with the guide groove 51 in the corrugated structure, the pressing disc 34 on the pressing plate 31 can deflect reciprocally. At this time, guide grooves 51 with different wave amplitudes are selected to adjust the spinning pressure; therefore, during multiple repeated pressings, the pressing plate 31 can combine and optimize a variety of different spinning methods, thereby ensuring the water extrusion effect on the calcium carbonate wet cake and not causing over-pressing of it;

[0054] A rotation notch 52 is formed in the bushing 5; a rotating ring 53 is fixed on the bushing 5, a driving part 54 is fixed in the extension plate 32, and the output end of the driving part 54 is connected and driven with the rotating ring 53 through a belt. Specifically, the spinning pressure of the pressing disc 34 can be adjusted according to the water content rate or other characteristics of the calcium carbonate wet cake to ensure that the water in the calcium carbonate wet cake can be fully squeezed out, and to avoid the calcium carbonate wet cake being too compact due to over-pressing, which will instead reduce the subsequent drying effect;

[0055] For example: the water content rate of the calcium carbonate wet cake reaches more than 60%, and the particles are finer;

[0056] The first stage: The pin cooperates with the inclined groove 51 of the inclined line structure (with a larger slope), and the pressing plate 34 performs high-strength unidirectional rotation pressing. The main purpose of this stage is to quickly remove most of the moisture, and it is repeated 2 - 3 times;

[0057] The second stage: The pin switches to the corrugated groove 51 of the corrugated structure (with a moderate wave amplitude), and the pressing plate 34 performs reciprocating deflection pressing. This stage further extrudes the residual moisture and at the same time avoids over-pressing the wet cake, and it is repeated 1 - 2 times.

[0058] As a preferred embodiment, the water squeezing mechanism 4 includes:

[0059] An aluminum laminate, covering the surface of the pressing plate 31;

[0060] A plurality of fixing plates 41, which are circumferentially distributed, and each of the fixing plates 41 is fixed in another forming groove of the pressing plate 31;

[0061] A sliding rod 42, which is slidably connected to the fixing plate 41, and outer cut-off blocks 43 are fixed at the ends of the sliding rod 42;

[0062] A driving ring 44, which is coaxially rotatably connected in the forming groove. A plurality of inclined grooves 45 are formed on the driving ring 44. Fixing pins 46 are fixed on each of the sliding rods 42, and the fixing pins 46 are slidably connected to the inclined grooves 45. Therefore, when the driving ring 44 rotates and adjusts, each sliding rod 42 can perform radial sliding through the connection between the fixing pin 46 and the inclined groove 45, so that the outer cut-off block 43 can form a water squeezing effect on the calcium carbonate wet cake outside the aluminum laminate.

[0063] In this embodiment, an installation plate 47 is fixed inside the pressing plate 31. A rack plate 48 is slidably connected to the installation plate 47. A tooth groove structure is provided on the outer wall of the driving ring 44, and the rack plate 48 meshes with the driving ring 44;

[0064] A pulse cylinder 49 is connected to the installation plate 47, and the output end of the pulse cylinder 49 is connected to the rack plate 48. The pulse cylinder 49 can provide high-frequency pulse expansion and contraction, so that the driving ring 44 can perform rapid forward and reverse deflection correspondingly, thereby realizing high-efficiency water squeezing of each outer cut-off block 43.

[0065] In this embodiment, a transmission rod 7 is also slidably arranged between adjacent sliding rods 42 on the pressing plate 31. A telescopic guide rod 71 is hinged to the fixing plate 41. One end of the telescopic guide rod 71 is connected to the sliding rod 42, and the other end thereof is connected to the transmission rod 7;

[0066] An inner block is fixed at the end of the transmission rod 7. In particular, the inner block can cooperate with the outer block 43 to fully squeeze water from the calcium carbonate wet cake. When the outer block 43 on each slide rod 42 slides toward the center of the circle, the inner block on the transmission rod 7 moves away from the center of the circle under the movement of the telescopic guide rod 71, thereby achieving the effect of stirring and squeezing water from the calcium carbonate wet cake during continuous operation, thereby ensuring the integrity of squeezing water.

[0067] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A nano calcium carbonate pressure filtration and drying device, characterized in that: It includes a frame (1), a filter plate assembly (11) is installed on the frame (1), a main beam seat (2) is arranged below the frame (1), a hopper (21) is fixed to the upper end of the main beam seat (2), and the upper end of the hopper (21) is connected to the frame (1); Two push plates (23) are slidably installed in the main beam seat (2), and oil cylinder thrusters (24) are fixed to both sides of the main beam seat (2), and the output end of each oil cylinder thruster (24) is connected to the push plate (23); A plurality of drying plate units (3) are arranged in the main beam seat (2) between the push plates (23), and the drying plate units (3) are arranged corresponding to the filter plate assembly (11); A water squeezing mechanism (4) is arranged in each drying plate unit (3), and the water squeezing mechanism (4) cooperates with the adjacent drying plate unit (3) on one side to squeeze and press the wet calcium carbonate cake.

2. The nano-calcium carbonate pressure filtration and drying equipment according to claim 1, wherein: The drying plate units (3) on both sides are fixedly corresponding to the push plates (23), and telescopic brackets (22) are symmetrically hinged to both sides of the drying plate unit (3), the telescopic brackets (22) are arranged in an X-shaped structure, and the adjacent telescopic brackets (22) are hinged to each other.

3. A nano-calcium carbonate pressure filtration and drying device according to claim 1, characterized in that: The drying plate unit (3) includes: A pressing plate (31), an extension plate (32) is fixed above it, and forming grooves are arranged in the middle of both end faces of the pressing plate (31); A loading plate (33), which is horizontally fixed below one side of the pressing plate (31), a notch is formed on the other side of the pressing plate (31), and the loading plates (33) on adjacent pressing plates (31) are slidably matched with the notch; A pressing disc (34), the center of which is arranged in one of the forming grooves, a shaft seat (35) is rotatably connected to the middle of the pressing plate (31), and the pressing disc (34) is fixed to the shaft seat (35); Convex shaft blocks (36), which are evenly distributed on the surface of the pressing disc (34).

4. A nano-calcium carbonate pressure filtration and drying device according to claim 3, characterized in that: A toothed ring is fixed outside the pressing disc (34), and a transmission gear (37) is rotatably arranged in the pressing plate (31), and the transmission gear (37) meshes with the toothed ring; A coupling shaft (38) is horizontally arranged on the pressing plate (31), and the coupling shaft (38) is coaxially fixed with the transmission gear (37); A shaft sleeve (5) is arranged on the end face of the pressing plate (31) far from the coupling shaft (38), the shaft sleeve (5) and the coupling shaft (38) are concentric, a pin is fixed on the side wall of the coupling shaft (38), a guide groove (51) is formed in the shaft sleeve (5), and the pin is slidably connected with the guide groove (51).

5. The nano-calcium carbonate pressure filtration and drying equipment according to claim 3, characterized in that: A heat conduction cavity (6) is formed in the middle of the shaft seat (35), a plurality of inner channels are distributed in the pressing disc (34), the heat conduction cavity (6) is communicated with the inner channels, and air flow holes are arranged on the side walls of the convex shaft blocks (36), and the air flow holes are communicated with the inner channels; A heat supply pipe (61) is connected to the outside of the pressing plate (31), and a heat flow channel (62) is arranged in the pressing plate (31), and the heat supply pipe (61) is communicated with the heat conduction cavity (6) through the heat flow channel (62).

6. The nano-calcium carbonate pressure filtration and drying equipment according to claim 4, characterized in that: The guide grooves (51) are multiple and arranged in a circle, and the cross-section of each guide groove (51) is in an inclined line structure or a corrugated line structure; A rotation notch (52) is formed in the bushing (5); a rotating ring (53) is fixed on the bushing (5), a driving part (54) is fixed in the extension plate (32), and the output end of the driving part (54) is connected and driven to the rotating ring (53) through a belt.

7. A nano-calcium carbonate pressure filtration and drying device according to claim 3, characterized in that: The water squeezing mechanism (4) includes: An aluminum layer plate covering the surface of the pressing plate (31); Fixing plates (41) are multiple and distributed in a circle, and each fixing plate (41) is fixed in another forming groove of the pressing plate (31); Slide rods (42) are slidably connected to the fixing plates (41), and outer cut blocks (43) are fixed to the ends of the slide rods (42); A driving ring (44) is coaxially and rotatably connected in the forming groove, a plurality of inclined grooves (45) are formed in the driving ring (44), fixing pins (46) are fixed to the slide rods (42), and the fixing pins (46) are slidably connected to the inclined grooves (45).

8. A nano-calcium carbonate pressure filtration and drying device according to claim 7, characterized in that: An installation plate (47) is fixed in the pressing plate (31), a rack plate (48) is slidably connected to the installation plate (47), a tooth groove structure is provided on the outer wall of the driving ring (44), and the rack plate (48) is engaged with the driving ring (44); A pulse cylinder (49) is connected to the installation plate (47), and the output end of the pulse cylinder (49) is connected to the rack plate (48).

9. The nano-calcium carbonate pressure filtration and drying equipment according to claim 7, wherein: A transmission rod (7) is further slidably arranged between adjacent slide rods (42) on the pressing plate (31), a telescopic guide rod (71) is hinged to the fixing plate (41), one end of the telescopic guide rod (71) is connected to the slide rod (42), and the other end thereof is connected to the transmission rod (7); An inner cut block is fixed to the end of the transmission rod (7).

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