Wall scraping type film evaporator for concentrated solution based on hydraulic support

Abstract

The invention belongs to the technical field of heat exchange, and particularly relates to a wall scraping type film evaporator for concentrated liquid based on a hydraulic support, the wall scraping type film evaporator comprises an evaporation cylinder, angle control units are uniformly arranged in the evaporation cylinder in the circumferential direction, and a displacement adjusting unit is arranged at one end of each angle control unit; through toothed belt transmission between toothed belt wheels, the torque between a torsion spring and an angle rod is dynamically adjusted, the vertical dip angle between a scraping plate and the barrel wall of an evaporation barrel is linearly adjusted, and meanwhile the compression amount between a ball head and an eccentric wheel is changed through eccentric interaction between an end ring and the eccentric wheel when the end ring rotates; after the vertical inclination angle of the dynamic adaptive scraper is adjusted, the gap between the scraper and the wall of the evaporation cylinder is constant, the film thickness is stabilized, and the heat transfer uniformity of unit area is improved; the number of teeth and the modulus between the control gear ring and the end dividing gear are linearly adjusted, the steering difference between the steering ring pipe and the angle pipe is dynamically adjusted, the horizontal dip angle between the scraper and the barrel wall of the evaporation barrel is linearly matched, and material flowing and film uniformity are optimized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat exchange, and particularly relates to a scraped-wall thin film evaporator for hydraulic support concentrated solution. BACKGROUND

[0002] The scraped-wall thin film evaporator is a high-efficiency evaporation device, which can form uniform thin liquid film in the evaporation cylinder wall by the scraping plate in the rotating state, and the material in the thin film state can be quickly heat-exchanged with the jacket wall surface, so that the solvent is rapidly evaporated into secondary steam, and the remaining concentrated solution is discharged from the bottom after being separated and condensed for recovery.

[0003] The core target of the concentrated solution production is to accurately control the material concentration in a certain range through stable evaporation, that is, to realize high-efficiency heat exchange between the scraped-wall thin liquid film and the jacket cylinder wall; however, in the actual production process, the viscosity of the concentrated solution for hydraulic support increases nonlinearly with the increase of the concentration, and the fixed angle of the scraping plate cannot effectively adapt to the dynamic change of the viscosity, which easily causes the extreme thickness of the liquid film, that is, in the low concentration stage, the scraping plate angle is too large, the pushing force of the material is too strong, the liquid film is excessively stretched, the effective heat transfer area between the liquid film and the wall surface is reduced, the jacket cylinder wall is directly exposed to the gas phase, and even the local dry wall phenomenon occurs; in the high concentration stage, the scraping plate angle is too small, the pushing force is insufficient, the cohesion of the high-viscosity material cannot be overcome, and the liquid film is easy to form local accumulation.

[0004] In addition, in the long-term processing production process, the internal impurities of the material, such as metal scraps or dust and other wear-resistant particles initially brought by the material raw materials, can aggravate the wear between the scraping plate edge and the cylinder wall, expand the gap, and gradually form a “dead volume” in the gap, that is, the high-viscosity concentrated solution cannot be completely scraped by the scraping plate due to poor flowability, and is left in the gap; the foregoing residual material will continue to evaporate with heating, gradually carbonize and dry, not only occupy the effective heat transfer area, but also be washed and wrapped by the new material in the subsequent batch production due to the material concentration in the “dead volume” being much higher than that in the normal flow channel, so as to cause the concentration fluctuation of the concentrated solution, and cannot meet the requirement of the hydraulic support on the concentration stability of the concentrated solution. SUMMARY

[0005] In order to solve the above problems, the scraped-wall thin film evaporator for the hydraulic support concentrated solution is adopted in the technical scheme, which comprises an evaporation cylinder, the evaporation cylinder is uniformly provided with an angle control unit in the circumferential direction inside the evaporation cylinder, and one end of the angle control unit is provided with a displacement adjusting unit.

[0006] The angle control unit comprises:

[0007] A rotating shaft is arranged at the shaft center inside the evaporation cylinder.

[0008] A shaft sleeve is coaxially arranged at one end outside the rotating shaft.

[0009] The corner tubes, numbering at least two, are evenly snapped together and installed in the middle position of the outer wall of the shaft seal sleeve;

[0010] The steering ring tube is rotatably fitted at the end of the angle tube away from the axis of the shaft end cap.

[0011] The main bevel gear is snap-fitted and installed on the outer wall of the shaft near the shaft seal sleeve.

[0012] The split-end bevel gears correspond one-to-one with the number and position of the angle tubes, and are evenly arranged circumferentially at the shaft center of the shaft seal sleeve. The split-end bevel gears mesh with the main end bevel gears.

[0013] The gear ring is snap-fitted and installed in the middle position of the inner wall of the split bevel gear;

[0014] The split-end gear is coaxially located in the middle of the gear ring, and the split-end gear is meshed with the gear ring.

[0015] The end shaft is snap-fitted and installed at the center of the split gear shaft.

[0016] Preferably, a machine compartment is snap-fitted onto the outer wall of the end of the steering ring tube away from the corner tube. Inside the machine compartment, a stepper motor is snap-fitted onto the outer wall via a mounting bracket, and the output shaft of the stepper motor is inserted into the steering ring tube. A T-shaped engagement post, rotatably fitted to the inner wall of the steering ring tube, is snap-fitted onto the output end of the stepper motor. Ear-shaped compartments are symmetrically snap-fitted onto the end face of the steering ring tube away from the corner tube. Toothed pulleys are located at the middle of the outer wall of the T-shaped engagement post and inside the ear-shaped compartments, with the toothed pulleys snap-fitted onto the T-shaped engagement post and rotatably fitted to the inner wall of the ear-shaped compartments. The installation involves the toothed pulleys rotating via a toothed belt. An end position compartment is fitted onto the outer wall of the end of the ear compartment away from the axis of the steering ring tube. An angle rod, which is rotatably fitted onto the inner wall of the toothed pulley at the end away from the T-joint column, is fitted onto the same end position compartment. Furthermore, the angle rod is rotatably fitted onto the inner wall of the ear compartment. A torsion spring, which is fitted onto the outer wall of the angle rod at the end of the end position compartment near the ear compartment, is fitted onto the same end position compartment. The torsion spring is completely inside the end position compartment. An end ring, which is rotatably fitted onto the outer wall of the end face of the end position compartment away from the ear compartment, is rotatably fitted onto the same angle rod.

[0017] Preferably, the end ring is externally inserted and slidably connected to one end of the turning ring pipe, a panel is connected to the end ring far from the one end of the corner pipe, a bracket is connected to the panel far from the one end of the corner pipe, a column is connected to the panel near the axis of the end ring, a ball head is connected to the column far from the bracket, an eccentric wheel is connected to the outer wall of the corner rod opposite to the ball head, a reset spring is installed on the outer wall of the column between the ball head and the panel, a front plate is connected to the inner wall of the vertical section of the bracket on one side, a rear plate is connected to the inner wall of the vertical section of the bracket on the other side, a scraper is slidably connected between the front plate and the rear plate, and the number of scrapers is at least two, and in addition, tooth grooves are evenly formed in the scrapers far from the bracket.

[0018] Preferably, a compensation slot is formed in one side of the scraper, and a compensation plate matched with the compensation slot is connected to the other side of the scraper.

[0019] Preferably, a distributor is connected to one end of the evaporation cylinder, a separation cylinder is connected to the end of the distributor far from the evaporation cylinder, a motor bracket is connected to the middle of the end face of the separation cylinder far from the distributor, a motor reducer is connected to the end of the motor bracket far from the separation cylinder, a corner bracket is evenly connected to the outer wall of the separation cylinder, a rack is connected to the end of the corner bracket far from the axis of the separation cylinder, and the number of racks is one, a rotor is connected to the output end of the motor reducer, the end of the rotor near the evaporation cylinder is truncated, a gas-liquid separator is connected to the outer wall of the end of the rotor near the evaporation cylinder, a conical head is connected to the other end of the evaporation cylinder and rotates with the rotor, in addition, the conical head rotates with the rotor shaft, and the rotor shaft is located in the center of the rotor.

[0020] Preferably, the displacement adjustment unit comprises:

[0021] An end gear is connected to the outer wall of the end shaft far from the shaft seal sleeve;

[0022] A storage box is connected to the outer wall of the end shaft far from the corner pipe, and the end gear is located in the storage box;

[0023] A rack is connected to one side of the inner wall of the storage box far from the shaft seal head, and the rack is meshed with the end gear;

[0024] A piston is connected to one end of the rack far from the middle of the storage box, and the piston is slidably connected to the inner wall of the storage box;

[0025] A key plate is connected to the middle of one side of the piston far from the rack.

[0026] The buckle barrel is installed in the middle of the key plate far from the rack, and the scraper far from the buckle barrel is installed in the middle of the front plate and the rear plate.

[0027] The shaft pin is installed in the middle of the buckle barrel far from the key plate.

[0028] The two cranks are symmetrically installed in the middle of the shaft pin.

[0029] The connecting plate is installed in the middle of the crank far from the shaft pin.

[0030] The key pin is installed in the middle of the connecting plate, the middle pin is installed in the middle of the connecting plate, the scraper is installed in the middle of the front plate, the slot is installed in the end of the front plate, the support is installed in the slot, the ball is installed in the support, the spring rod is installed in the end of the front plate, and the wedge plate is installed in the end of the spring rod.

[0031] The guide plate is installed in the end of the spring rod, the angle slot is installed in the end of the guide plate, the outer cylinder is installed in the end of the guide plate, and the spring rod is installed in the outer cylinder.

[0032] The tooth slot is installed in the end of the guide plate, the distance between the guide plate and the end ring is ten centimeters, the width of the wedge plate is less than the depth of the slot, the height of the wedge plate is less than the width of the slot, and the distance between the guide plate and the end ring is less than the distance between the scraper and the end ring.

[0033] The method for high-efficiency heat transfer of thin liquid film is provided by the above-mentioned thin film evaporator for hydraulic support concentrate liquid, and the specific steps are as follows:

[0034] S1: First, the T-shaped column is rotated by a certain angle by a stepping motor, and the machine warehouse provides protection for the stepping motor, then the toothed belt wheel is driven by the toothed belt transmission, and the angle of the angle bar is controlled synchronously, until the specified deformation of the torsion spring is generated, at this time, the end ring changes the vertical angle between the scraper plane and the angle bar under the direct influence of the angle bar.

[0035] In the process, the end ring is in a rotating state, and eccentric interaction occurs between the end ring and the eccentric wheel, which causes the ball head to be pressed by the eccentric wheel, and the column drives the mouth frame to move away from the axis of the angle rod by a certain distance, so that the angle of the scraper changes, and the gap between the scraper and the wall of the evaporation cylinder is constant.

[0036] S2: Then rotate the rotating shaft by a specified angle by the external motor built in the conical head, at this time, the split end bevel gear rotates by the same angle under the meshing action of the main end bevel gear, and then the tooth number and modulus between the gear ring in different regions and the split end gear are controlled to linearly differentially adjust the end shaft in different regions, so that the gradient difference between the rotating angles of the scrapers in different regions under the differential action of the steering ring pipe is realized under the same rotating amount of the rotating shaft, that is, the dynamic adjustable inclination angle of the scraper is adapted to the change of the material viscosity, and the material flow and film uniformity are optimized.

[0037] S3: Finally, the meshing motion between the end position gear and the rack is generated by the end shaft control, the rack synchronously controls the piston to drive the key plate to move a specified distance, and then the key plate drives the shaft pin (one end) to move an equal amount, at this time, the parallelogram structure composed of the shaft pin, the crank, the connecting plate, the key pin and the middle pin equally controls the scrapers in different positions to increase or decrease the overall length of the "scraper" under the joint guidance of the front plate and the rear plate, matches the material quantity change, and avoids "empty scraping" and "leakage scraping".

[0038] The present application has the following beneficial effects:

[0039] 1、The present application dynamically adjusts the torque between the torsion spring and the angle rod through the tooth belt transmission between the toothed pulleys, linearly adjusts the vertical inclination angle between the scraper and the wall of the evaporation cylinder, changes the compression amount between the ball head and the eccentric wheel through the eccentric interaction between the end ring and the eccentric wheel during rotation, dynamically adapts the constant gap between the scraper vertical inclination angle adjustment and the wall of the evaporation cylinder, stabilizes the film thickness, improves the heat transfer uniformity per unit area, reduces the thermal resistance fluctuation, ensures the relative consistency of evaporation efficiency before and after the thermal resistance fluctuation, and reduces the risk of local overheating and coking.

[0040] At the same time, by linearly adjusting the tooth number and modulus between the gear ring and the split end gear, the rotating speed of the split end gear at different positions is changed, the steering difference between the steering ring pipe and the angle pipe is dynamically adjusted, the horizontal inclination angle between the scraper and the wall of the evaporation cylinder is linearly matched while the vertical inclination angle of the scraper is dynamically adjusted, the material flow and film uniformity are optimized, and the "dry wall" phenomenon and local stagnation overheating problem are avoided.

[0041] 2、The application adjusts the rotating speed between the end shafts in different areas by differential, linearly changes the meshing degree between the end gear and rack in different positions, further changes the expansion degree of the parallelogram expansion structure composed of the shaft pin, crank, connecting plate, key pin and middle pin, dynamically adjusts the distance between the adjacent scrapers, moderately changes the overall length of the scraper, matches the material quantity change range, so that the scraper is always accurately matched with the material quantity, the heat transfer area is fully utilized (low concentration), invalid friction and temperature interference are avoided (high concentration), and the heat transfer efficiency is indirectly improved. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is the overall structure schematic diagram of the application.

[0043] Figure 2 It is the internal structure section display diagram of the evaporation cylinder in the application.

[0044] Figure 3 It is the three-dimensional structure display diagram of the angle control unit and displacement adjustment unit in the application.

[0045] Figure 4 It is the internal structure section display diagram of the angle control unit in the application.

[0046] Figure 5 It is the three-dimensional display diagram of the partial structure in the application. Figure 4

[0047] It is the structure top view of the application. Figure 6 Figure 4

[0048] Figure 7 It is the three-dimensional structure display diagram of the displacement adjustment unit in the application.

[0049] Figure 8 It is the three-dimensional display diagram of the mouth frame and the upper partial structure thereof in the application.

[0050] Figure 9 It is the three-dimensional display diagram of the structure in another view in the application. Figure 7

[0051] It is the partial section three-dimensional display diagram of the sub-storage box in the application. Figure 10 Figure 9 It is the three-dimensional display diagram of the partial structure in the application.

[0052] Figure 11 Figure 10 It is the partial structure section display diagram in the application.

[0053] Figure 12 It is the partial structure section display diagram in the application. Figure 11

[0054] Figure 13 ​​​​​is the attached drawing of the present invention Figure 12 is the perspective view of the structure from another angle.

[0055] Figure 14 is the attached drawing of the present invention Figure 12 is the left view of the structure.

[0056] Reference numerals in the drawing: 1, evaporation cylinder; 2, angle control unit; 3, displacement adjustment unit;

[0057] 11, distributor; 12, separation cylinder; 13, motor support; 14, motor reducer; 15, angle bracket; 16, frame; 17, rotor; 18, gas-liquid separator; 19, conical head;

[0058] 21, rotating shaft; 22, shaft sleeve; 23, angle pipe; 24, steering ring pipe; 25, main end bevel gear; 26, split end bevel gear; 27, gear ring; 28, split end gear; 29, end shaft;

[0059] 211, machine bin; 212, stepper motor; 213, T column; 214, ear bin; 215, toothed pulley; 216, end position bin; 217, angle rod; 218, torsion spring; 219, end ring;

[0060] 221, faceplate; 222, bracket; 223, stand; 224, ball head; 225, eccentric wheel; 226, return spring; 227, front plate; 228, rear plate; 229, scraper;

[0061] 231, position compensation slot; 232, position compensation plate;

[0062] 31, end position gear; 32, split storage box; 33, rack; 34, piston; 35, key plate; 36, buckle cylinder; 37, shaft pin; 38, crank; 39, connecting plate;

[0063] 311, key pin; 312, middle position pin; 313, slot; 314, support column; 315, ball; 316, telescopic spring rod; 317, wedge plate;

[0064] 321, guide plate; 322, angle slot; 323, angle outer cylinder. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0066] It should be noted that the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration, and do not represent the only implementation.

[0067] The specific implementation of the present application is described in detail below in connection with specific embodiments.

[0068] With reference to Figure 1 , Figure 2 and Figure 6 , it can be seen that the wall scraping type thin film evaporator for hydraulic support concentrate liquid comprises an evaporation cylinder 1, and an angle control unit 2 is uniformly arranged on the inside of the evaporation cylinder 1 in a circumferential direction; one end of the angle control unit 2 is provided with a displacement adjusting unit 3.

[0069] With reference to Figure 3 , Figure 4 , Figure 5 and Figure 6 , it can be seen that the angle control unit 2 comprises: a rotating shaft 21 arranged at the axis of the inside of the evaporation cylinder 1; a shaft sealing sleeve 22 coaxially arranged at one end of the outside of the rotating shaft 21; at least two angle pipes 23 uniformly and circularly clamped and matched to be installed at the middle position of the outer wall of the shaft sealing sleeve 22; a steering ring pipe 24 rotationally matched to be installed at one end of the angle pipe 23 away from the axis of the shaft sealing head; a main end bevel gear 25 clamped and matched to be installed at the outer wall of one end of the rotating shaft 21 close to the shaft sealing sleeve 22; a split end bevel gear 26 corresponding to the number and position of the angle pipe 23, uniformly arranged at the axis of the shaft sealing sleeve 22, and the split end bevel gear 26 and the main end bevel gear 25 are meshed with each other; a gear ring 27 clamped and matched to be installed at the middle position of the inner wall of the split end bevel gear 26; a split end gear 28 coaxially arranged at the middle position of the gear ring 27, and the split end gear 28 and the gear ring 27 are meshed and matched to be installed; and an end shaft 29 clamped and matched to be installed at the axis of the split end gear 28.

[0070] With reference to Figure 4 , Figure 5 and Figure 7 , it can be seen that the steering ring pipe 24 is clamped and matched to be installed at the outer wall of one end of the angle pipe 23 away from the angle pipe 23, a machine bin 211 is clamped and matched to be installed at the outer wall of one end of the steering ring pipe 24 away from the angle pipe 23, a stepping motor 212 is clamped and matched to be installed at the inside of the machine bin 211 through a mounting bracket, the output shaft end of the stepping motor 212 is inserted into the inside of the steering ring pipe 24, a T-shaped column 213 clamped and matched to be installed with the inner wall of the steering ring pipe 24 is clamped and matched to be installed at the output end of the stepping motor 212, an ear bin 214 is clamped and matched to be installed at the end surface of the steering ring pipe 24 away from the angle pipe 23 in a symmetrical manner, a toothed belt wheel 215 is arranged at the middle position of the outer wall of the T-shaped column 213 and the inside of the ear bin 214, the toothed belt wheel 215 is clamped and matched to be installed between the T-shaped column 213 and the ear bin 214, and is rotationally matched to be installed between the inner wall of the ear bin 214, and the toothed belt wheels 215 are rotationally connected through a toothed belt.

[0071] The ear bin 214 is installed on the outer wall of the one end of the steering ring pipe 24 away from the axis by clamping and matching, and the end position bin 216 is installed on the inner wall of the toothed belt wheel 215 away from the T-shaped column 213 by clamping and matching. The angular lever 217 is installed on the inner wall of the end position bin 216 by rotating and matching. In addition, the angular lever 217 is installed between the inner wall of the ear bin 214 by rotating and matching. The torsion spring 218 is installed on the inner wall of the end position bin 216 close to the one end of the ear bin 214 by clamping and matching. The torsion spring 218 is completely inside the end position bin 216. The end ring 219 is installed on the outer wall of the one end of the end position bin 216 away from the ear bin 214 by rotating and matching. The end ring 219 is installed on the angular lever 217 by rotating and matching.

[0072] Referring to Figure 3 、 Figure 4 、 Figure 7 and Figure 8 , the end ring 219 is installed on the outer wall of the one end of the steering ring pipe 24 by inserting and sliding clamping. The panel 221 is installed on the outer wall of the one end of the angular pipe 23 by clamping and matching. The L-shaped bracket 222 is installed on the intermediate position of the one end of the panel 221 close to the axis by clamping and matching. The column 223 is installed on the one end of the L-shaped bracket 222 away from the ball head 224 by clamping and matching. The eccentric wheel 225 is installed on the outer wall of the angular lever 217 by clamping and matching. The eccentric wheel 225 is opposite to the ball head 224. The return spring 226 is installed between the ball head 224 and the panel 221 on the outer wall of the column 223 by sleeving. The front plate 227 is installed on the inner wall of the vertical section of the L-shaped bracket 222 by clamping and matching. The rear plate 228 is installed on the inner wall of the vertical section of the L-shaped bracket 222 by clamping and matching. The scraper 229 is installed between the front plate 227 and the rear plate 228 by sliding and clamping. The number of the scraper 229 is at least two. In addition, the tooth groove is uniformly arranged on the one end of the scraper 229 away from the L-shaped bracket 222.

[0073] Referring to Figure 11 、 Figure 12 and Figure 13 , the position compensation slot 232 is arranged on the one side of the scraper 229. The position compensation plate 231 is installed on the other side of the scraper 229 by clamping and matching.

[0074] Referring to Figure 1 and Figure 2It can be known that the evaporating cylinder 1 is installed with the distributor 11 at one end, the distributor 11 is installed with the separation cylinder 12 at the other end, the separation cylinder 12 is installed with the motor support 13 at the middle position of the side end surface away from the distributor 11, the motor support 13 is installed with the motor reducer 14 at the end away from the separation cylinder 12, the separation cylinder 12 is installed with the angle bracket 15 at the outer wall in a uniform manner, the angle bracket 15 is installed with the rack 16 at the end away from the axis of the separation cylinder 12, the number of the rack 16 is one, the motor reducer 14 is installed with the rotor 17 at the output end, the rotor 17 is processed in a truncated manner at the end close to the evaporating cylinder 1, the rotor 17 is installed with the gas-liquid separator 18 at the outer wall close to the evaporating cylinder 1, the evaporating cylinder 1 is installed with the conical head 19 at the other end, the conical head 19 is installed in a rotating manner with the rotating shaft 21, the rotating shaft 21 is located at the inner axis of the rotor 17, the rotor 17 is installed in a rotating manner with the rotating shaft 21 at the middle position of the truncated interval, and the rotating shaft 21 passes through the truncated interval of the rotor 17.

[0075] The tooth groove is uniformly arranged at the end away from the end ring 219 of the supplement plate 231, the length of the tooth groove is half of the length of the supplement plate 231, the end away from the end ring 219 of the supplement plate 231 is ten centimeters away from the end away from the end ring 219 of the hanging plate, and the vertical distance between the end away from the end ring 219 of the guide plate 321 and the axis of the end ring 219 is less than the vertical distance between the end away from the end ring 219 of the scraper 229 and the axis of the end ring 219.

[0076] The vertical inclination change process between the scraper 229 and the cylinder wall of the evaporating cylinder 1 (at the transition from the low concentration stage to the high concentration stage):

[0077] Firstly, the T column 213 is driven by the micro motor to control the rotation of the toothed belt wheel 215 (at the end of the T column 213) by a certain angle, and then the other toothed belt wheel 215 (at the end of the ear store 214) is driven by the toothed belt (in specific implementation, the two toothed belt wheels 215 are engaged through the toothed belt) to control the deflection of the angle rod 217 by an equal angle.

[0078] Then, the angle rod 217 rotates to make the end ring 219 rotate by the same angle (the torque gradient of the torsion spring 218 increases or decreases, in specific implementation, the elastic recovery force of the torsion spring 218 can reduce the vibration and wear between the angle rod 217 and the end ring 219, improve the motion synchronization and the stability before and after assembly, and ensure the continuity and smoothness of the rotation of the end ring 219), and then the face plate 221 controls the rotation of the angle bracket 222, the front plate 227 and the rear plate 228 by a certain angle under the cooperation of the end ring 219.

[0079] Finally, through the clamping fit between the front plate 227 and the rear plate 228, the control of the scraper 229 (multiple) between the two, the same angle deflection, at the same time, through the assembly fit between the complementary plate 231 and the complementary slot 232, fill the blank space after the spacing change between adjacent scrapers 229, that is, by increasing or decreasing the spacing between adjacent scrapers 229, ensure the dynamic "containment" of the material flow of the scraper 229 under different states of the material (material accumulation or dilution), increase or decrease the contact area and contact time between the material and the scraper 229 and the complementary plate 231, fully ensure the uniform film forming of the material, efficient dispersion, and maximize the utilization rate of the heat transfer area;

[0080] It is hereby stated that the models (diameter, modulus and number of teeth) of the toothed belt pulleys 215 at different regions are the same, so as to ensure the consistency of the rotational adjustment of the vertical inclination angle between the scraper 229 and the wall of the evaporation cylinder 1. In specific implementation, the gradient angle adjustment of the scraper 229 of the same group of four (the specific number can be adjusted according to the actual processing) regions can be realized by linearly changing the models between the toothed belt pulleys 215 at different positions (the four region scrapers 229 can be independently adjusted to a small inclination angle at the distal end (for example: the scraper 229 at the distal end of the feeding area is adjusted to a small inclination angle, reducing the excessive shearing of the dilute material; the scraper 229 at the distal end of the thickening area is adjusted to a large inclination angle, enhancing the scraping thinning ability of the viscous material), realizing the local film forming control of "one region one strategy"; even for the circumferential material difference in the same region (such as the slightly more material accumulation near the lower part of the feeding pipe), the distal end angle of the scraper 229 in the region can be fine-tuned to ensure the local film thickness (to avoid the increase of heat transfer resistance due to the local film being too thick, or the waste of energy consumption due to the naked heating surface caused by the film being too thin));

[0081] When the vertical inclination angle between the scraper 229 and the wall of the evaporation cylinder 1 changes, the gap between them is adjusted synchronously:

[0082] During the rotation of the angle lever 217, the eccentric wheel 225 rotates synchronously by a specified angle, causing the ball head 224 to be squeezed with the eccentric wheel 225, and then the column 223 drives the bracket 222 to move away from the angle lever 217 under the control of the ball head 224. (In actual implementation, the panel 221 is guided and supported by the end ring 219 to improve the stability and precision of the movement of the bracket 222. Similarly, the restoring force of the return spring 226 during the extension and contraction further ensures the stability of the movement of the column 223 and provides a driving force for restoring the bracket 222 to the initial position), the front plate 227 and the rear plate 228 drive the scraper 229 to move close to or away from the wall of the evaporation cylinder 1 under the control of the bracket 222, (for example, when the vertical inclination angle of the scraper 229 increases, the distance between the scraper 229 and the wall of the evaporation cylinder 1 increases, in order to ensure the consistency of the gap between the scraper 229 and the wall of the evaporation cylinder 1, the distance between the scraper 229 and the angle lever 217 is dynamically adjusted by the eccentricity of the eccentric wheel 225 and the ball head 224, and the gap between the scraper 229 and the wall of the evaporation cylinder 1 is constant);

[0083] The specific adjustment process of the horizontal inclination angle between the scraper 229 and the wall of the evaporation cylinder 1 (when the concentration of the low-concentration stage is changed to the high-concentration stage):

[0084] First, the main end bevel gear 25 is rotated by a specified angle by the rotation shaft 21 (in actual implementation, the rotation angle of the rotation shaft 21 can be determined according to the concentration of the material, which can be monitored by the corresponding external sensor, and the external PLC control system and terminal analysis and processing output device can be used to change the rotation angle of the rotation shaft 21 in real time), and in actual production process, the rotation shaft 21 can be driven to rotate by an external motor (which is built in the conical head 19);

[0085] Then, the inner wall gear ring 27 of the sub-end bevel gear 26 is synchronously controlled to rotate by a specified angle under the meshing action of the main end bevel gear 25, and then the sub-end gear 28 is controlled to rotate by a specified angle under the meshing action of the gear ring 27 (for example, four scrapers 229 are used to explain the linear differential adjustment of the rotation angle of the end shaft 29 at four positions and the purpose: in actual implementation, the modulus and the number of teeth of the gear ring 27 and the sub-end gear 28 at the above-mentioned positions can be increased or decreased linearly, so that the difference between the gear ring 27 and the sub-end gear 28 can be realized under the same rotation variable of the rotation shaft 21, and then the rotation angle difference of the end shaft 29 at the above-mentioned positions can be differentially changed; the purpose is that the four scrapers 229 distributed in the circumferential direction can cover the entire working inner wall of the evaporation cylinder 1, and the inclination angle gradient can be dynamically adjusted to compensate for the difference in circumferential material distribution (for example, the material under the inlet is more, and the inclination angle of the scraper 229 in the corresponding area is slightly larger to enhance the "thinning" ability of the scraper 229), so that the material film thickness in the whole circumferential and axial direction is more uniform, the heat exchange area is increased, and the evaporation efficiency is more stable), and the end shaft 29 is controlled to rotate by a specified angle;

[0086] Finally, the horizontal angle between the scraper 229 and the evaporating cylinder 1 is adjusted as a whole under the synchronous control of the end shaft 29 and the support of the angle pipe 23 (the rigid stable support provided by the shaft sleeve 22 to the end shaft 29 and the angle pipe 23 reduces the interference of the vibration factor and improves the assembly precision of the rotating ring pipe 24 and the angle pipe 23), and the horizontal angle can be changed equally or adjusted linearly in a gradient manner in the specific implementation:

[0087] It is hereby stated that the gap between the scraper 229 and the evaporating cylinder 1 can be adjusted moderately at the same time when the horizontal angle of the scraper 229 is adjusted;

[0088] Simple process of evaporating the concentrated liquid pre-material:

[0089] Firstly, the material to be treated is tangentially introduced into the inside of the evaporating cylinder 1 through the feed inlet (not shown in the figure) on the outer wall of the separation cylinder 12 by the feed pump, and initially contacts the cloth distribution device on the rotating scraper 229 or the rotor 17 (some equipment is designed with a special cloth distributor, which is not shown in the figure and is prior art);

[0090] Then, the mechanical force of the scraper 229 overcomes the viscosity and surface tension of the material, breaks the uneven state of the natural adhesion of the material, and ensures that the material is in the form of a thin film in full contact with the heating wall, thereby increasing the heat exchange area. In addition, heating medium (such as saturated steam or heat conducting oil) is introduced into the jacket space (which exists in the inside of the evaporating cylinder 1 in the specific implementation) of the evaporating cylinder 1, and then the heat is transferred to the material film on the inner wall of the evaporating cylinder 1 through the cylinder wall, so that the low-boiling-point components (such as water and solvent) in the material are rapidly heated and vaporized to form secondary steam;

[0091] The secondary steam generated by the foregoing evaporation carries a small amount of liquid droplets upward and enters the top gas-liquid separator 18 (such as a centrifugal or baffle separator), and the liquid droplets are separated by centrifugal force or inertial action and flow back to the heating cylinder. The pure secondary steam enters the condenser from the outlet (located on the outer wall of the evaporating cylinder 1 near the conical head 19, not shown in the figure), and the solvent is recovered after condensation;

[0092] Finally, the remaining high-concentration material (concentrated liquid) flows downward along the inner wall of the evaporating cylinder 1 under the action of gravity and the pushing of the scraper 229, and is finally discharged from the concentrated liquid outlet at the bottom (located at the middle position of the conical head 19 away from the evaporating cylinder 1, not shown in the figure);

[0093] It is hereby stated that the inclination layout process of the scraper 229 between different layers on the outer wall of the rotor 17 is as follows:

[0094] In the scraped wall thin film evaporator, the two layers of the rotor 17 outer wall (two layers are taken as an example to illustrate, and in the specific implementation process, the two layers can be alternately arranged) are designed as the "first layer of the gradient increasing (a→b→c→d, a Figure 6 , the second layer of the corresponding gradient decreasing (d→c→b→a)", that is, through the "reverse gradient cooperation" of the two layers of the scraper 229, the "multi-angle, step-by-step, and bidirectional complementary" processing of the material is realized, the circumferential multi-angle coverage is realized, the "bidirectional trimming" of the material film thickness is realized, the film uniformity is greatly improved, the axial plug flow "bidirectional balance" is realized, the local residence and back mixing are reduced, the material residence time is stabilized, and the difference in the shear sensitivity of the material is adapted, so that the activity of the material is ensured, thereby solving the limitations of the traditional single-layer fixed-angle scraper 229 (or single-layer single-directional gradient scraper 229) in film uniformity, shear adaptability, axial propulsion stability, and the like.

[0095] Referring to Figure 9 , Figure 10 , Figure 11 and Figure 12 , the displacement adjusting unit 3 includes: an end gear 31 which is installed in a clamping and matching manner on the outer wall of the end shaft 29 away from the shaft seal sleeve 22; a sub-storage box 32 which is installed in a clamping and matching manner on the outer wall of the end shaft 29 away from the angle pipe 23, and the end gear 31 is located inside the sub-storage box 32; a rack 33 which is installed in a clamping and matching manner on one side of the inner wall of the sub-storage box 32 away from the shaft seal head, and the rack 33 is installed in a meshing and matching manner with the end gear 31; a piston 34 which is installed in a clamping and matching manner on one end of the rack 33 away from the middle position of the sub-storage box 32, and the piston 34 is installed in a clamping and matching manner in a sliding and matching manner with the inner wall of the sub-storage box 32;

[0096] a key plate 35 which is installed in a clamping and matching manner on the middle position of the end surface of the piston 34 away from the rack 33; a buckle barrel 36 which is installed in a clamping and matching manner on the middle position of one end of the key plate 35 away from the rack 33, and the scraper 229 away from the buckle barrel 36 is installed in a clamping and matching manner between the front plate 227 and the rear plate 228; a shaft pin 37 which is installed in a clamping and matching manner on the middle position of one end of the buckle barrel 36 away from the key plate 35; a crank 38 which is installed in a clamping and matching manner in a symmetrical manner on the middle position of the outer wall of the shaft pin 37, and in addition, the two cranks 38 in the same group are alternately distributed on the outer wall of the shaft pin 37; and a connecting plate 39 which is installed in a rotating and matching manner on the middle position of one end of the crank 38 away from the shaft pin 37;

[0097] Referring to Figure 12 , Figure 13 and Figure 14It can be known that the key pin 311 is rotatably and fitly installed at the connecting end of the crank 38 and the connecting plate 39, the middle pin 312 is rotatably and fitly installed at the middle position of the two connecting plates 39 which are adjacent and cross-distributed, in addition, the middle pin 312 is fitly and clippily installed between the end away from the buckle cylinder 36 and the scraper 229, the mouth slot 313 is set on the end face of the scraper 229 close to the front plate 227, the support 314 is fitly and clippily installed on the inner wall of the vertical section of the mouth slot 313, the ball 315 is fitly and clippily installed on the end of the support 314 close to the front plate 227, the telescopic spring rod 316 is fitly and clippily installed on the end of the front plate 227 close to the end ring 219, and the wedge plate 317 matched with the ball 315 is fitly and clippily installed on the outer wall of the telescopic spring rod 316 close to the mouth slot 313.

[0098] Referring to Figure 12 、 Figure 13 and Figure 14 It can be known that the guide plate 321 is fitly and clippily installed on the outer wall of the telescopic spring rod 316 away from the mouth slot 313, the angular slot 322 is evenly set on the inner wall of the guide plate 321 away from the end ring 219, the angular outer cylinder 323 is fitly and clippily installed on the outer wall of the guide plate 321 close to the end ring 219, and the telescopic spring rod 316 away from the mouth slot 313 is located inside the angular outer cylinder 323.

[0099] The width of the wedge plate 317 is less than the depth of the mouth slot 313, and the height of the wedge plate 317 is less than the width of the mouth slot 313.

[0100] The equal interval adjustment process between the adjacent scrapers 229 (the process of increasing or reducing the overall coverage interval of the scraper 229):

[0101] Firstly, the end gear 31 driven by the end shaft 29 generates meshing motion with the rack 33 (the meshing degree is limited by the rotation angle of the end shaft 29, that is, the rack 33 at different positions can be displaced to different degrees under the meshing action of the end gear 31), the rack 33 is supported and guided by the storage box 32, and the piston 34 drives the key plate 35 to move away from the end gear 31 (in specific implementation, the piston 34 blocks the contact channel between the inside and outside of the storage box 32, provides a stable and safe working environment for the end gear 31 and the rack 33, improves the service life, and the area of the crank 38 and the connecting plate 39 can be isolated and protected by the protective shell of the external device);

[0102] Then, the buckle cylinder 36 is driven by the key plate 35, and the shaft pin 37 at the same end is moved (in the specific implementation, only one end of the shaft pin 37 is connected with the buckle cylinder 36). After that, the parallelogram structure composed of the shaft pin 37, the crank 38, the connecting plate 39, the key pin 311 and the center pin 312 synchronously adjusts the distance between the adjacent scrapers 229 (increases or decreases), so as to change the overall coverage area of the scrapers 229 in the area between the front plate 227 and the rear plate 228.

[0103] Finally, through the differential engagement between the end gear 31 and the rack 33, the linear change adjustment of the overall coverage area of the scrapers 229 in different areas is realized, and at the same time, the horizontal or vertical inclination angle between the scraper 229 and the evaporation cylinder 1 can be adjusted in real time through the angle control unit 2, so as to realize the combination and linkage of various schemes, fully improve the optimization of the scraper 229 to the material flow, and ensure the high efficiency of the heat exchange of the material;

[0104] When the material is low in concentration or in a stacked state (to alleviate the stacking state of the material on the end surface of the scraper 229 and ensure the heat exchange period of the material):

[0105] During the movement of the scraper 229 which moves synchronously with the shaft 29 pin near the end of the buckle cylinder 36, the rolling ball 315 in the slot 313 continuously generates mutual extrusion interaction with the wedge plate 317. After that, the rolling ball 315 lifts the wedge plate 317 under the rigid support of the support column 314, and the wedge plate 317 is driven by the telescopic spring rod 316 (in the specific implementation, the telescopic spring rod 316 is stably supported and guided by the front plate 227), so as to control the guide plate 321 to move away from the front plate 227, so as to dynamically adjust the space allowance between the guide plate 321 and the scraper 229;

[0106] The purpose of dynamically adjusting the length of the scraper 229 and equipping the guide plate 321 is:

[0107] When processing low-viscosity materials, the length of the scraper 229 is shortened, the range of the material being "scattered" is reduced, and the film is prevented from being too thin;

[0108] When processing high-viscosity materials, the length of the scraper 229 is lengthened, the scraping force is enhanced, and the material is prevented from being locally accumulated too thickly;

[0109] Meanwhile, the dynamic adjustment of the vertical distance between the guide plate 321 and the scraper 229 can guide the material to form a stable pre-accumulation state before entering the action area of the scraper 229 by controlling the “space allowance” therebetween, so that the material is uniformly “spread” to the wall under the action of the scraper 229, thereby avoiding uneven film formation caused by too fast or too slow material flow, and finally forming a thin film with uniform thickness and complete coverage on the heated wall, ensuring consistent evaporation efficiency in each area and reducing the problem of local overheating or insufficient evaporation.

[0110] The working principle of the scraping wall type thin film evaporator for hydraulic support concentrate solution provided by the application is as follows: first step: first, the T-shaped column 213 is driven to rotate by a certain angle by the stepping motor 212, and the machine bin 211 provides blocking protection to the stepping motor 212, then the toothed belt wheels 215 are synchronously controlled to rotate by an equal angle under the toothed belt transmission, until the torsion spring 218 generates a specified deformation amount, at this time, the end ring 219 synchronously changes the vertical included angle between the scraper 229 and the angle rod 217 under the direct influence of the angle rod 217;

[0111] In this process, the end ring 219 generates eccentric interaction with the eccentric wheel 225 when rotating, and then the ball head 224 controls the stand column 223 to drive the mouth frame 222 to move a specified distance away from the axis of the angle rod 217 under the extrusion of the eccentric wheel 225, so as to gradiently adjust the angle change of the scraper 229, and the gap between the scraper 229 and the cylinder wall of the evaporation cylinder 1 is constant;

[0112] Second step: then, the rotating shaft 21 inside the conical head 19 is driven to rotate by a specified angle by the external motor, at this time, the split end bevel gear 26 is driven to rotate by the same angle under the meshing action of the main end bevel gear 25, then, the linear differential adjustment of the end shaft 29 in different regions is implemented by controlling the tooth number and module number between the gear ring 27 and the split end gear 28 in different regions, so as to realize the gradient difference between the rotating angles of the scrapers 229 in different regions under the differential action of the rotating ring pipe 24 with the same rotating amount of the rotating shaft 21, that is, the inclination angle of the scraper 229 is dynamically adjustable, which is suitable for the change of the material viscosity and optimizes the material flow and film uniformity;

[0113] Third step: finally through the end shaft 29 control end position gear 31 with rack 33 between the meshing movement, prompting rack 33 synchronous control piston 34 drive key plate 35 movement designated distance, in turn realize the key plate 35 drive under the action of buckle cylinder 36, drive shaft pin 37 (one end) equivalent movement, at this time, by the shaft pin 37, crank 38, connecting plate 39, key pin 311 and the middle pin 312 jointly composed of parallelogram telescopic structure, equivalent control different position scraper 229 under the joint guidance of front plate 227 and rear plate 228, gradient increase or decrease "scraper 229" overall length, match material quantity change, avoid "empty scraping" and "leak scraping".

[0114] The circuit and control involved in the present application are prior art, and will not be described in detail here.

[0115] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A wall-scraped thin-film evaporator for concentrate based on a hydraulic support, comprising an evaporation cylinder (1), characterized in that: An angle control unit (2) is uniformly arranged circumferentially inside the evaporator (1), and a displacement adjustment unit (3) is provided at one end of the angle control unit (2); The angle control unit (2) includes: A rotating shaft (21) is located at the center of the shaft inside the evaporator (1); The shaft seal sleeve (22) is coaxially disposed at one end outside the rotating shaft (21); Angle tubes (23), at least two in number, are installed in a circumferentially uniform snap-fit ​​fit in the middle position of the outer wall of the shaft seal sleeve (22); The steering ring tube (24) is rotatably fitted at the end of the angle tube (23) away from the shaft end cap axis; The main bevel gear (25) is snap-fitted and installed on the outer wall of the shaft (21) near the shaft sleeve (22); The number and position of the split-end bevel gear (26) correspond one-to-one with the angle tube (23), and they are evenly arranged circumferentially at the center of the shaft seal sleeve (22), and the split-end bevel gear (26) meshes with the main end bevel gear (25); The gear ring (27) is snap-fitted and installed in the middle position of the inner wall of the split bevel gear (26); The split-end gear (28) is coaxially located in the middle of the gear ring (27), and the split-end gear (28) and the gear ring (27) are meshed and installed together. The end shaft (29) is snap-fitted and installed at the center of the split end gear (28).

2. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 1, characterized in that: The steering ring tube (24) is fitted with a machine compartment (211) on the outer wall of the end away from the corner tube (23). A stepper motor (212) is fitted inside the machine compartment (211) via a mounting bracket. The output shaft of the stepper motor (212) is inserted into the steering ring tube (24). A T-shaped column (213) is fitted to the output end of the stepper motor (212) and rotates with the inner wall of the steering ring tube (24). A symmetrical ear compartment (214) is fitted to the end face of the steering ring tube (24) away from the corner tube (23). A toothed pulley (215) is provided in the middle of the outer wall of the T-shaped column (213) and inside the ear compartment (214). The toothed pulley (215) is fitted to the T-shaped column (213) and rotates with the inner wall of the ear compartment (214). (215) rotates through a toothed belt. The outer wall of the ear chamber (214) away from the axis of the steering ring tube (24) is fitted with an end chamber (216). The inner wall of the toothed pulley (215) away from the T-joint column (213) is fitted with an angle rod (217) that is rotatably fitted with the end chamber (216). In addition, the angle rod (217) is rotatably fitted with the inner wall of the ear chamber (214). The outer wall of the angle rod (217) is fitted with a torsion spring (218) that is fitted with the inner wall of the end chamber (216) near the ear chamber (214). The torsion spring (218) is completely inside the end chamber (216). The outer wall of the end face of the end chamber (216) away from the ear chamber (214) is rotatably fitted with an end ring (219) that is rotatably fitted with the angle rod (217).

3. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 2, characterized in that: The end ring (219) is externally fitted with a panel (221) via a sliding snap-fit ​​connection at the end away from the steering ring tube (24). A spigot bracket (222) is fitted at the end of the panel (221) away from the corner tube (23). A column (223) is fitted at the middle position of the end of the panel (221) closest to the axis of the end ring (219). A ball head (224) is fitted at the end of the column (223) away from the spigot bracket (222). An eccentric wheel (225) directly opposite the ball head (224) is fitted on the outer wall of the corner rod (217). 223) A return spring (226) is installed on the outer wall between the ball head (224) and the panel (221). A front plate (227) is installed on the inner wall of one side of the vertical section of the mouth frame (222). A rear plate (228) is installed on the inner wall of the other side of the vertical section of the mouth frame (222). A scraper (229) is installed together between the front plate (227) and the rear plate (228). The number of scrapers (229) is at least two. In addition, the scraper (229) has evenly toothed grooves on the end away from the mouth frame (222).

4. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 3, characterized in that: The scraper (229) has a filling groove (232) on one end face, and a filling plate (231) that matches the filling groove (232) is snapped onto the other end face of the scraper (229).

5. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 4, characterized in that: A distributor (11) is snapped into one end of the evaporator (1). A separator (12) is snapped into the other end of the distributor (11) away from the evaporator (1). A motor bracket (13) is snapped into the middle of the end face of the separator (12) away from the distributor (11). A motor reducer (14) is snapped into the other end of the motor bracket (13) away from the separator (12). Angle brackets (15) are snapped into the outer wall of the separator (12) evenly. A frame (16) is snapped into the other end of the angle brackets (15) away from the axis of the separator (12). There is only one frame (16). A rotary motor is snapped into the output end of the motor reducer (14). The rotor (17) is cut off at one end near the evaporator (1). A gas-liquid separator (18) is installed on the outer wall of the rotor (17) near the evaporator (1). A conical head (19) is installed at the other end of the evaporator (1) in a rotating fit with the rotor (17). The conical head (19) is installed in a rotating fit with the shaft (21), and the shaft (21) is located at the center of the rotor (17). The shaft head is installed in the middle of the cut-off section of the rotor (17), and the shaft (21) passes through the cut-off section of the rotor (17) and is installed in a rotating fit with both ends of the rotor (17).

6. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 5, characterized in that: The displacement adjustment unit (3) includes: The end gear (31) is snap-fitted and installed on the outer wall of the end of the end shaft (29) away from the shaft sleeve (22); The storage box (32) is snap-fitted and installed on the outer wall of the end shaft (29) away from the corner tube (23), and the end gear (31) is located inside the storage box (32); The rack (33) is snap-fitted and installed on the inner wall of the storage box (32) away from the shaft seal head, and the rack (33) is meshed with the end gear (31). The piston (34) is snap-fitted and installed at one end of the rack (33) away from the middle position of the storage box (32), and the piston (34) is fitted and slidably snap-fitted with the inner wall of the storage box (32); The key plate (35) is snap-fitted and installed on the middle position of the end face of the piston (34) away from the rack (33); The buckle (36) is snapped into place at the middle position of the end of the key plate (35) away from the rack (33), and the scraper (229) at the end away from the buckle (36) is snapped into place with the front plate (227) and the rear plate (228). The pivot pin (37) is snap-fitted and installed at the middle position of the end of the buckle sleeve (36) away from the key plate (35); Cranks (38) are installed in pairs and symmetrically snapped together in the middle of the outer wall of the shaft pin (37). Furthermore, the two cranks (38) in the same group are alternately distributed on the outer wall of the shaft pin (37). The connecting plate (39) is rotatably mounted on the crank (38) at the middle position away from the shaft pin (37).

7. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 6, characterized in that: The crank (38) and the connecting plate (39) are rotatably fitted with a key pin (311). A center pin (312) is inserted and rotatably fitted between two adjacent and intersecting connecting plates (39). Furthermore, the end of the center pin (312) away from the retaining cylinder (36) is engaged with the scraper (229). A groove (313) is provided on the end face of the scraper (229) near the front plate (227). 13) A support column (314) is installed in a snap-fit ​​fit on the inner wall of the vertical section. A ball bearing (315) is installed in a snap-fit ​​fit on the end of the support column (314) near the front plate (227). A telescopic spring rod (316) is installed in a snap-fit ​​fit on the end of the front plate (227) near the end ring (219). A wedge plate (317) that cooperates with the ball bearing (315) is installed in a snap-fit ​​fit on the outer wall of the end of the telescopic spring rod (316) near the groove (313).

8. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 7, characterized in that: The telescopic spring rod (316) is fitted with a guide plate (321) at the middle of the outer wall of the end away from the slot (313). The guide plate (321) has evenly spaced corner grooves (322) on the inner wall of the end away from the end ring (219). The guide plate (321) is fitted with a corner outer cylinder (323) at the outer wall of the end near the end ring (219). The end of the telescopic spring rod (316) away from the slot (313) is located inside the corner outer cylinder (323).

9. The wall-scraped thin-film evaporator for concentrate based on a hydraulic support according to claim 7, characterized in that: The end of the supplementary plate (231) away from the end ring (219) is uniformly provided with toothed grooves, and the length of the toothed grooves is half the length of the supplementary plate (231). At the same time, the end of the supplementary plate (231) away from the end ring (219) is 10 cm away from the end of the hanging plate away from the end ring (219). The width of the wedge plate (317) is less than the depth of the groove (313), and the height of the wedge plate (317) is less than the width of the groove (313). The vertical distance between the end of the guide plate (321) away from the end ring (219) and the axis of the end ring (219) is less than the vertical distance between the end of the scraper (229) away from the end ring (219) and the axis of the end ring (219).

Images