Low-temperature liquid continuous thickener

Abstract

The utility model discloses a low-temperature liquid continuous concentrator, and relates to the field of evaporation concentration technology, the low-temperature liquid continuous concentrator comprises a fixed pressing plate, a movable pressing plate, a plate sheet and a gasket, one side of the movable pressing plate is provided with a fastening bolt, one end of the fastening bolt is provided with a supporting column, one side of the supporting column is fixedly provided with a servo motor, and the other side of the supporting column is provided with a screw; lifting cleaning mechanisms are arranged at the upper end and the lower end of the fixed pressing plate and comprise collecting boxes fixedly arranged at the lower end of the fixed pressing plate, a plurality of reciprocating lead screws are rotationally arranged on the two sides of an inner cavity of each collecting box, rolling wheels are arranged at the lower ends of the reciprocating lead screws on one side, lead screw nuts are arranged on the reciprocating lead screws, and transverse guide rods are arranged between the lead screw nuts. A movable telescopic block is arranged on the transverse guide rod, and a cleaning roller and a water scraping strip are arranged on one side of the movable telescopic block. The problem that production is not facilitated due to long shutdown waiting time caused by manual disassembly is solved.

Description

Technical Field

[0001] This application relates to the field of evaporation and concentration technology, and in particular to a cryogenic liquid continuous concentrator. Background Technology

[0002] Low-temperature liquid continuous concentrators are based on the principle of liquid evaporation. By lowering the temperature, the solvent in the liquid solution can escape through low-temperature evaporation, thereby achieving the purpose of concentration. Among them, there is the MVR plate evaporator, which is suitable for the evaporation and concentration of materials such as fermentation broth, lactic acid, sorbitol, fruit juice, dairy products, organic solvents, starch industry, and fermentation industry.

[0003] However, the disassembly and cleaning of the plates and gaskets used for steam heat exchange and cooling often requires manual disassembly, and the downtime during disassembly and cleaning is relatively long, which will be detrimental to production. Utility Model Content

[0004] In order to improve the problem of long downtime caused by manual disassembly, which is detrimental to production, this application provides a low-temperature liquid continuous concentrator.

[0005] The cryogenic liquid continuous concentrator provided in this application adopts the following technical solution:

[0006] A cryogenic liquid continuous concentrator includes a fixed pressure plate, a movable pressure plate, and plates and gaskets disposed between the fixed pressure plate and the movable pressure plate. The movable pressure plate has symmetrically arranged fastening bolts on the side away from the plates and gaskets. A support column is threaded through the end of each fastening bolt away from the movable pressure plate. A servo motor is fixed to the middle of the support column on the side away from the movable pressure plate. The fixed pressure plate has two identical lifting and cleaning mechanisms at its upper and lower ends.

[0007] The lifting and cleaning mechanism includes a collection box fixed at the lower end of a fixed pressure plate. Several reciprocating screws are rotatably arranged on both sides of the inner cavity of the collection box. Rollers are fixedly installed through the lower ends of two of the reciprocating screws located on one side of the movable pressure plate. Screw nuts are threaded through the several reciprocating screws. Horizontal guide rods are movably installed between the several screw nuts. Several movable telescopic blocks are movably installed through the several horizontal guide rods. Cleaning rollers and squeegees are provided on opposite sides of the several movable telescopic blocks to clean the surfaces of the plates and gaskets.

[0008] By adopting the above technical solution, the servo motor provides power, which drives the fastening bolt to move the movable pressure plate, thereby achieving the pressing and releasing of the plates and gaskets, and at the same time driving the lifting and cleaning mechanism to operate, so that the plates and gaskets can be cleaned when the movable pressure plate moves.

[0009] Preferably, the support column has several synchronous pulleys symmetrically arranged on the side away from the movable clamping plate, one of the synchronous pulleys is fixedly connected to the output end of the servo motor, and the remaining synchronous pulleys are respectively threaded through and connected to fastening bolts, and a synchronous belt is engaged on the outside of each of the synchronous pulleys.

[0010] By adopting the above technical solution, the timing pulley and timing belt work together to drive the fastening bolt to move laterally, thereby driving the movable pressure plate to move laterally synchronously.

[0011] Preferably, the lifting and cleaning mechanism further includes sliding grooves fixed on both sides of the bottom surface of the collection box, a rack fixed on one side wall of the sliding groove, and a gear fixedly penetrating the middle of the outer ring surface of the roller on one side of the rack.

[0012] By adopting the above technical solution, the gear and rack work together to enable the roller to move and rotate at the same time.

[0013] Preferably, the surfaces of the movable telescopic blocks on opposite sides are provided with a plurality of symmetrically arranged transverse openings, and the plurality of transverse openings are respectively slidably arranged with the cleaning roller and the squeegee.

[0014] By adopting the above technical solution, the transverse collapsible mechanism can accommodate the cleaning roller and squeegee without contacting the plate and gasket, thereby enabling several movable telescopic blocks to align with the plate and gasket one by one.

[0015] Preferably, several springs are symmetrically arranged inside the inner cavities of the several movable telescopic blocks.

[0016] By adopting the above technical solution, the spring enables the cleaning roller and squeegee to make stable contact with the surface of the plate and gasket, and at the same time, when not in contact with the plate and gasket, the cleaning roller and squeegee can be retracted, thereby saving space.

[0017] Preferably, the lower ends of the two reciprocating screws located on one side of the movable clamping plate are movably connected with L-shaped fixing plates that are fixed to the movable clamping plate.

[0018] By adopting the above technical solution, the L-shaped fixed plate can connect the entire lifting and cleaning mechanism with the movable pressure plate, so that the movement of the movable pressure plate can provide power for the entire lifting and cleaning mechanism.

[0019] Preferably, a T-shaped sliding piece is fixedly provided at the middle of the upper and lower ends of several of the plates and pads, and a T-shaped guide groove is slidably provided on the outside of the several T-shaped sliding pieces to be fixedly connected to the collection box.

[0020] By adopting the above technical solution, the T-shaped slider and the T-shaped guide groove can work together to integrate the plate and the gasket, so that they can be stably placed on the same horizontal line.

[0021] Preferably, a plurality of perforated water pipes capable of spraying cleaning fluid onto the plates and gaskets are fixedly installed in the inner cavity of the collection box located on the upper part of the fixed clamping plate.

[0022] By adopting the above technical solution, the perforated water pipe is composed of two types of pipes: one for spraying cleaning liquid and the other for spraying clean water, which can better clean the surface of plates and gaskets.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The movable clamping plate is moved by the synchronous pulley and synchronous belt set on the output end of the servo motor and the fastening bolt. The movable clamping plate can better push the plate and the gasket by cooperating with the T-shaped guide groove and the T-shaped sliding plate, thereby avoiding manual disassembly of the plate and the gasket.

[0025] 2. Using a perforated water pipe, cleaning fluid is sprayed onto the plates and gaskets. The moving clamping plate drives the entire lifting and cleaning mechanism to clean the surfaces of the plates and gaskets repeatedly. Then, the perforated water pipe is used to spray clean water onto the plates and gaskets for rinsing, thus saving cleaning time. Attached Figure Description

[0026] Figure 1 This is an overall diagram of the concentration and evaporation apparatus of this application;

[0027] Figure 2 This is an enlarged view of the lower structure of this application;

[0028] Figure 3 This is an enlarged view of the structure of part A in this application;

[0029] Figure 4 This is an enlarged view of the lifting and cleaning mechanism of this application;

[0030] Figure 5 This is a bottom view of the concentration evaporation apparatus of this application.

[0031] Reference numerals: 1. Fixed clamping plate; 2. Plate and gasket; 3. Support column; 4. Fastening bolt; 5. Servo motor;

[0032] 6. Lifting and cleaning mechanism; 61. Collection box; 62. Roller; 63. Gear; 64. Reciprocating lead screw; 65. Lead screw nut; 66. Horizontal guide rod; 67. Moving telescopic block; 68. Cleaning roller; 69. Squeegee; 610. Slide groove; 611. L-shaped fixing plate; 612. Rack; 613. Horizontal opening; 614. Spring;

[0033] 7. Movable clamping plate; 8. T-shaped guide groove; 9. T-shaped sliding plate; 10. Perforated water pipe; 11. Synchronous belt; 12. Synchronous pulley. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0035] This application discloses a cryogenic liquid continuous concentrator.

[0036] Reference Figure 1 , Figure 2 , Figure 5 A cryogenic liquid continuous concentrator includes a fixed pressure plate 1 and a movable pressure plate 7. Several plates and gaskets 2 with the same structure and installation method are provided between the fixed pressure plate 1 and the movable pressure plate 7. Fastening bolts 4 are connected to the upper and lower ends of the side surface of the movable pressure plate 7 away from the plates and gaskets 2. The two fastening bolts 4 are symmetrical and have the same structure. The end of the fastening bolt 4 away from the movable pressure plate 7 is threaded through the support column 3. A servo motor 5 is fixedly installed in the middle of the side surface of the support column 3 away from the movable pressure plate 7.

[0037] Reference Figure 1 , Figure 2 , Figure 5 A synchronous pulley 12 is fixed at the output end of the servo motor 5, and synchronous pulleys 12 with the same structure are rotatably provided at the upper and lower ends of the side surface of the support column 3 away from the movable clamping plate 7. The middle parts of the two synchronous pulleys 12 are threaded through the two fastening bolts 4 respectively. The synchronous pulley 12 fixed at the output end of the servo motor 5 and the synchronous pulley 12 threaded through the fastening bolts 4 are located on the same axis, and the three synchronous pulleys 12 are all meshed with the synchronous belt 11.

[0038] Reference Figure 1 , Figure 2 , Figure 5 T-shaped sliding pieces 9 are fixedly provided at the middle of the upper and lower surfaces of several plates and gaskets 2, respectively. The T-shaped sliding pieces 9 have the same structure and are all smooth. T-shaped guide grooves 8 with smooth inner surfaces are slidably provided on the outside of the T-shaped sliding pieces 9. The surfaces of the two T-shaped guide grooves 8 away from the T-shaped sliding pieces 9 are fixedly connected to the middle of the top surface of the inner cavity of the collection box 61 located above the plates and gaskets 2 and the middle of the bottom surface of the inner cavity of the collection box 61 located below the plates and gaskets 2, respectively. Several perforated water pipes 10 are fixedly provided on the top surface of the inner cavity of the collection box 61 located above the fixed pressing plate 1, and the several perforated water pipes 10 are evenly distributed on both sides of the T-shaped guide grooves 8.

[0039] It should be noted that the fixed clamping plate 1, the plates and gaskets 2, the servo motor 5, and the movable clamping plate 7 are all existing technologies, and their structural principles will not be elaborated here. Several perforated water pipes 10 are connected half to the cleaning fluid conveyor and the other half to the clean water conveyor, and are arranged in an alternating pattern to spray cleaning fluid onto the surface of the plates and gaskets 2. After cleaning the surface of the plates and gaskets 2, clean water is used to rinse off the residual cleaning fluid and dirt. The servo motor 5 also needs to be connected to a PLC or other controller, but since these are existing technologies, they will not be described in detail here.

[0040] The rotation of the output end of the servo motor 5 drives the synchronous wheel 12 fixed to the output end of the servo motor 5 to rotate, thereby driving the synchronous belt 11 to move. This in turn drives the two synchronous wheels 12 meshing with the two ends of the synchronous belt 11 to rotate synchronously. At the same time, the two synchronous wheels 12 drive the fastening bolt 4 with its central thread to rotate. This rotation of the fastening bolt 4 drives the movable pressure plate 7 to move. When the movable pressure plate 7 moves, it pushes several plates and gaskets 2 to slowly move towards the fixed pressure plate 1 until the plates and gaskets 2 are squeezed into a whole, which can accommodate the flow of steam and concentrated liquid. The plates and gaskets 2 are connected by T-shaped sliding pieces 9 fixed in the middle of their upper and lower end faces, which cooperate with T-shaped guide grooves 8 fixed in the middle of the inner cavity of the two collection boxes 61. This ensures that the plates and gaskets 2 are on the same horizontal line and also limits their sliding, so that each plate and gasket 2 can fit perfectly.

[0041] Reference Figures 2-4 Two lifting cleaning mechanisms 6 are respectively provided at the upper and lower ends of the fixed pressing plate 1, and the two lifting cleaning mechanisms 6 have the same structure and installation method. The lifting cleaning mechanism 6 includes a collection box 61 fixedly installed at the lower end of the fixed pressing plate 1, and the other end of the collection box 61 is fixedly connected to the lower surface of the support column 3. Two sliding grooves 610 are fixedly installed on both sides of the bottom surface of the inner cavity of the collection box 61, and the two sliding grooves 610 have the same structure and are symmetrical to each other. Two rollers 62 are slidably installed in the inner cavity of the two sliding grooves 610, and the two rollers 62 have the same structure. A gear 63 is fixedly installed on the outer ring groove surface of the roller 62, and a rack 612 is fixedly installed on one side wall of the two sliding grooves 610. The rack 612 and the gear 63 are at the same height, and the rack 612 and the gear 63 are meshed with each other. Thus, when the roller 62 moves in the sliding groove 610, the meshing action between the gear 63 and the rack 612 achieves the effect of the roller 62 moving and rotating at the same time.

[0042] Reference Figures 2-4Several reciprocating screws 64 with the same structure and symmetrical arrangement are rotatably arranged on both sides of the inner cavity of the collection box 61. The lower ends of two opposing reciprocating screws 64 located on one side of the movable pressure plate 7 are fixedly connected to the middle of two rollers 62. Two L-shaped fixing plates 611 are arranged on the upper part of the two rollers 62. The upper end surfaces of the two L-shaped fixing plates 611 are fixedly connected to the lower end surfaces of the movable pressure plate 7 on both sides. The middle of the other surface of the two L-shaped fixing plates 611 is movably connected to the lower ends of the two reciprocating screws 64.

[0043] Reference Figures 2-4 A plurality of reciprocating lead screws 64 are threadedly connected to a plurality of lead screw nuts 65, and the plurality of lead screw nuts 65 are identical in structure and symmetrical to each other. A transverse guide rod 66 is movably connected between the lead screw nuts 65 located on the same side, and a plurality of movable telescopic blocks 67 with identical structures are movably connected to the outer ring surface of the transverse guide rod 66. A plurality of transverse openings 613 are opened on the opposite side surface of the plurality of movable telescopic blocks 67 located on both sides at one end of the retracting chamber, and the plurality of transverse openings 613 are symmetrical to each other. The plurality of movable telescopic blocks 67 are rotated at the middle of the opposite side surface of the protruding end. The device is equipped with a cleaning roller 68, and squeegee strips 69 are fixed to the protruding ends of the movable telescopic blocks 67 at the upper and lower parts of the cleaning roller 68, respectively. The cleaning roller 68 and the squeegee strips 69 are located on the same horizontal line and both abut against the surface of the plate and the pad 2, and clean and scrape the surface of the plate and the pad 2 at the same time. The diameter of several transverse openings 613 is the same as the diameter of the cleaning roller 68 and the squeegee strips 69, and they are slidably arranged relative to each other. Several springs 614 are symmetrically arranged in the inner cavity of several movable telescopic blocks 67, so that the protruding ends of the movable telescopic blocks 67 can be pulled back.

[0044] It should be noted that the above-mentioned device is an MVR plate evaporator composed of a heater, separator, compressor, pump, operating platform, electrical instrument control cabinet, valves, pipelines, and other systems. The evaporation and concentration device in the MVR plate evaporator is a process of material preheating and evaporation and concentration: the material first undergoes multi-stage preheating, then enters the first-effect plate evaporation and concentration system, and then sequentially enters the second-effect plate evaporation and concentration system and the single-effect plate evaporation and concentration system. In each evaporation and concentration system, the material is further concentrated. Finally, after concentration detection, the material reaches the required concentration and is discharged.

[0045] Steam recycling process: First-effect secondary steam: The secondary steam generated in the first effect is directed to the second-effect heater. After utilizing the heat of the secondary steam, the remaining steam enters the compressor. The compressor pressurizes the steam and then sends it back to the first-effect plate evaporator system for recycling. Single-effect secondary steam: The secondary steam generated in the single effect directly enters the compressor. After pressurization, the steam is sent back to the single-effect plate evaporator condensation system for recycling. Condensate treatment process: Condensate discharge: The condensate generated by the system first enters the condensate preheater. In the preheater, the condensate preheats other fluids before being discharged.

[0046] Vacuum non-condensable gas treatment: The non-condensable gas generated in the vacuum system first enters the non-condensable gas preheater, and then enters the non-condensable gas cooler for further cooling. Finally, the cooled non-condensable gas is extracted and discharged by the vacuum pump.

[0047] The movement of the movable clamping plate 7 drives the L-shaped fixing plate 611, which is fixed to the lower end face of the movable clamping plate 7, to move synchronously. This allows the L-shaped fixing plate 611 to drive the reciprocating screw 64, which is movably connected to it, to move synchronously. During the movement of the reciprocating screw 64, the roller 62, which is fixedly connected to its lower part, will move in the sliding grooves 610 fixed on both sides of the lower end face of the collection box 61. During the movement of the roller 62, the gear 63 fixed on the outer ring groove surface will mesh with the rack 612, thereby driving the roller 62 to rotate. At the same time, the roller 62 will also drive the reciprocating screw 64 to rotate synchronously. This allows the reciprocating screw 64 to drive the screw nut 65 to move longitudinally back and forth. Under the action of the horizontal guide rod 66, the screw nuts 65 located on the same side can move synchronously and move closer to each other.

[0048] This allows the horizontal guide rod 66 to drive the movable telescopic block 67 to move longitudinally, and enables the cleaning roller 68 and squeegee 69 on the movable telescopic block 67 to abut against the lower end of the plate and gasket 2. Under the pressure caused by the continuous rise, the plate and gasket 2 will squeeze the cleaning roller 68 and squeegee 69 on both sides of the movable telescopic block 67 to both sides. Under the tension of the spring 614, the cleaning roller 68 and squeegee 69 can stick tightly to the surface of the plate and gasket 2 and continue to move longitudinally reciprocating with the screw nut 65, thereby achieving reciprocating cleaning of the surface of the plate and gasket 2.

[0049] The implementation principle of a low-temperature liquid continuous concentrator in this application embodiment is as follows: When it is necessary to clean the plates and gaskets 2, the output end of the servo motor 5 rotates, thereby driving the synchronous wheel 12 to rotate, which in turn drives the synchronous belt 11 to move and drives the two synchronous wheels 12 meshing at both ends of the synchronous belt 11 to rotate synchronously. At the same time, the fastening bolt 4 moves away from the fixed pressure plate 1 as the synchronous wheel 12 rotates, thereby pulling the movable pressure plate 7 to move together, thereby releasing the pressure on several plates and gaskets 2. At the same time, cleaning fluid is sprayed onto the plates and gaskets 2 through the perforated water pipe 10.

[0050] Simultaneously, when the movable clamping plate 7 moves, it will drive the L-shaped fixed plate 611 to move synchronously, thereby driving the reciprocating screw 64 to move synchronously. The reciprocating screw 64, in turn, drives the roller 62 to move in the slide groove 610 and achieves rotation under the cooperation of the gear 63 and the rack 612. At the same time, it drives the screw nut 65 and the horizontal guide rod 66 to move longitudinally back and forth, and drives the movable telescopic block 67 to contact the bottom surface of the plate and the gasket 2. Then, under the pressure caused by the continuous rise, the plate and the gasket 2 squeeze the cleaning roller 68 and the squeegee 69 to both sides. However, under the tension of the spring 614, the cleaning roller 68 and the squeegee 69 can stick tightly to the surface of the plate and the gasket 2, and continue to follow the screw nut 65 to move longitudinally back and forth, thereby realizing the reciprocating cleaning and liquid scraping of the surface of the plate and the gasket 2.

[0051] When the cleaning roller 68 and squeegee 69 reach the top of the plate and pad 2, the perforated water pipe 10 starts spraying clean water to rinse the surface of the plate and pad 2, as well as the surfaces of the cleaning roller 68 and squeegee 69. At the same time, it rinses away the residual cleaning solution on the surface of the plate and pad 2 and the dirt cleaned by the cleaning roller 68. After rinsing clean, the above steps are reversed to reassemble the plate and pad 2 into a whole. The squeegee 69 can then scrape away the residual water on the surface of the plate and pad 2, thereby achieving automated cleaning and reducing cleaning time.

[0052] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A cryogenic liquid continuous concentrator, comprising a fixed pressure plate (1), a movable pressure plate (7), and plates and gaskets (2) disposed between the fixed pressure plate (1) and the movable pressure plate (7), characterized in that: The movable clamping plate (7) is symmetrically provided with fastening bolts (4) on the side away from the plate and gasket (2). The fastening bolt (4) is threaded through the end away from the movable clamping plate (7) and a support column (3) is provided. A servo motor (5) is fixed in the middle of the side away from the movable clamping plate (7). The fixed clamping plate (1) is provided with two lifting and cleaning mechanisms (6) with the same structure and installation method at the upper and lower ends. The lifting and cleaning mechanism (6) includes a collection box (61) fixed at the lower end of the fixed pressure plate (1). Several reciprocating screws (64) are rotatably arranged on both sides of the inner cavity of the collection box (61). Rollers (62) are fixedly installed through the lower ends of two of the reciprocating screws (64) located on the side of the movable pressure plate (7). Screw nuts (65) are threaded through the several reciprocating screws (64). Horizontal guide rods (66) are movably installed between the several screw nuts (65). Several movable telescopic blocks (67) are movably installed through the several horizontal guide rods (66). Cleaning rollers (68) and squeegees (69) for cleaning the surface of the plates and pads (2) are provided on the opposite side of the several movable telescopic blocks (67).

2. The cryogenic liquid continuous concentrator according to claim 1, characterized in that: The support column (3) is symmetrically provided with several synchronous pulleys (12) on the side away from the movable clamping plate (7). One of the synchronous pulleys (12) is fixedly connected to the output end of the servo motor (5), and the remaining synchronous pulleys (12) are respectively threaded through the fastening bolts (4). The synchronous belts (11) are meshed on the outside of the synchronous pulleys (12).

3. A cryogenic liquid continuous concentrator according to claim 1, characterized in that: The lifting and cleaning mechanism (6) also includes a slide groove (610) fixed on both sides of the bottom surface of the collection box (61). A rack (612) is fixed on one side wall of the slide groove (610). A gear (63) is meshed on one side of the rack (612) and is fixedly inserted through the middle of the outer ring surface of the roller (62).

4. A cryogenic liquid continuous concentrator according to claim 1, characterized in that: Several of the movable telescopic blocks (67) have several symmetrically arranged transverse openings (613) on their opposite sides, and the several transverse openings (613) are respectively slidably arranged with the cleaning roller (68) and the squeegee (69).

5. A cryogenic liquid continuous concentrator according to claim 1, characterized in that: Several springs (614) are symmetrically arranged in the inner cavity of several of the movable telescopic blocks (67).

6. A cryogenic liquid continuous concentrator according to claim 1, characterized in that: The two reciprocating screws (64) located on one side of the movable clamping plate (7) are provided with L-shaped fixing plates (611) that are fixed to the movable clamping plate (7) through their lower ends.

7. A cryogenic liquid continuous concentrator according to claim 1, characterized in that: A T-shaped sliding piece (9) is fixedly provided at the middle of the upper and lower ends of several of the plates and pads (2), and a T-shaped guide groove (8) is slidably provided on the outside of several of the T-shaped sliding pieces (9) and fixedly connected to the collection box (61).

8. A cryogenic liquid continuous concentrator according to claim 1, characterized in that: The collection box (61) located above the fixed pressing plate (1) has several perforated water pipes (10) fixed in its inner cavity, which can spray cleaning fluid onto the plates and gaskets (2).

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