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CN-121466615-B - Multistage thin film evaporator for removing low-boiling-point substances in polyether

CN121466615BCN 121466615 BCN121466615 BCN 121466615BCN-121466615-B

Abstract

The invention discloses a multistage thin film evaporator for removing low-boiling-point substances in polyether, which relates to the technical field of evaporators and comprises an evaporator body, a feed inlet, a discharge outlet and a differential mechanism, wherein the feed inlet is fixedly connected to the right upper end of the evaporator body, the discharge outlet is fixedly connected to the upper part of the front end of the evaporator body, the differential mechanism is fixedly connected to the top of the evaporator body, and the differential mechanism is arranged.

Inventors

  • WANG LINGRONG

Assignees

  • 福建钟山化工有限公司

Dates

Publication Date
20260508
Application Date
20260108

Claims (9)

  1. 1. The multistage thin film evaporator for removing low-boiling-point substances in polyether comprises an evaporator body (1), wherein a feed inlet (2) is fixedly connected to the right upper end of the evaporator body (1), a discharge outlet (3) is fixedly connected to the upper part of the front end of the evaporator body (1), and a differential mechanism (4) is fixedly connected to the top of the evaporator body (1); The differential mechanism (4) is characterized by comprising a first mounting box (41), the top of the evaporator body (1) is fixedly connected with the first mounting box (41), the front end of the top of the first mounting box (41) is fixedly connected with a first motor (42), an output shaft at the bottom of the first motor (42) is fixedly connected with a first gear (43), the back of the first gear (43) is meshed with a second gear (44), the bottom of the first gear (43) is fixedly connected with a third gear (45) through a gear rod, the back of the third gear (45) is meshed with a fourth gear (46), the bottom of the fourth gear (46) is fixedly connected with a mounting rod (47), the outer wall of the mounting rod (47) is fixedly connected with a scraper blade (48), a first adjusting mechanism (49) is fixedly connected above the outer wall of the scraper blade (48), the bottom of the second gear (44) is fixedly connected with a first connecting rod (410), the outer wall of the first connecting rod (410) is in friction contact with a friction block (411), a fourth gear (46) is meshed with the back of the third gear (45), the back of the third gear (45) is meshed with a fourth gear (46), the fourth gear (46) is fixedly connected with a mounting rod (47), the second connecting rod (412) is fixedly connected with the bottom of the first connecting rod (410), vibration mechanisms (414) are fixedly connected to the upper side and the lower side of the left end and the right end of the second connecting rod (412); The vibration mechanism (414) comprises a third mounting box (4141), wherein the upper side and the lower side of the left end and the right end of the second connecting rod (412) are fixedly connected with the third mounting box (4141), the right side of the rear end in the third mounting box (4141) is provided with a second sliding groove (4142), the inside of the second sliding groove (4142) is fixedly connected with eleven groups of third electromagnetic blocks (4143), the third electromagnetic blocks (4143) are magnetically adsorbed with the inner tooth plates of the gear tooth plates (4144), the inner tooth plates (4144) are fixedly connected with a rotary table (4145) through bottom gear rods of the gear tooth plates, the top of the rotary table (4145) is eccentrically provided with a convex rod (4146), the outer wall of the convex rod (4146) is in intermittent fit with the grooved wheel (4147), the front end of the top of the grooved wheel (4147) is rotatably connected with a second swinging rod (4148), the bottom left end of the second swinging rod (4148) is rotatably connected with a sliding block (4149), the bottom of the sliding block (4149) is magnetically adsorbed with the inner bottom of the third mounting box (4144), the rotary table is fixedly connected with the rotary table (4145), the rotary table is eccentrically provided with a rotary table (4145), the top of the fourth electromagnetic blocks (4164), and the fourth electromagnetic blocks (4164) are magnetically adsorbed by the bottom of the fourth mounting box, and the top of the four electromagnetic blocks (4164) are intermittently matched with the top.
  2. 2. The multistage thin film evaporator for removing low-boiling substances in polyether according to claim 1, wherein the first adjusting mechanism (49) comprises a first air bag (491), six groups of first air bags (491) are fixedly connected above the outer wall of the scraping plate (48), high-performance polytetrafluoroethylene composite layers (492) are adhesively connected to the top of the first air bags (491), a piston cylinder (493) is fixedly connected to the bottom of the mounting rod (47), three groups of connecting pipes (494) are fixedly connected to the left end and the right end of the piston cylinder (493), an electromagnetic valve (495) is fixedly connected to the conveying opening of the connecting pipe (494), the top of the piston cylinder (493) is slidably connected with the outer wall of the piston rod (496), eight groups of first electromagnetic blocks (497) are fixedly connected above the inner side of the mounting rod (47), the first electromagnetic blocks (497) are electrically connected with an external current output device, and a first sealing plug (498) is hermetically connected above the front end of the piston cylinder (493).
  3. 3. The multistage thin film evaporator for removing low-boiling substances in polyether according to claim 2, wherein the second adjusting mechanism (413) comprises a second mounting box (4131), the bottoms of the second connecting rod (412) and the first connecting rod (410) are fixedly connected with the second mounting box (4131), the inner bottom of the second mounting box (4131) is fixedly connected with a mounting plate (4132), the back of the mounting plate (4132) is fixedly connected with a second motor (4133), the front end output shaft of the second motor (4133) is fixedly connected with a rotating block (4134), the right side of the front end of the rotating block (4134) and the left side of the back are both rotationally connected with a first swinging rod (4135), the outer side of the first swinging rod (4135) is fixedly connected with a second electromagnetic block (4136), the outer wall of the second electromagnetic block (4136) is slidably connected with a first limiting rod (4137), the outer wall of the first limiting rod (4137) is slidably connected with a second limiting rod (4138), the outer side of the first electromagnetic block (4137) is fixedly connected with a second sliding groove (41310), and the outer side of the first electromagnetic block (4135) is fixedly connected with the left side of the second sliding groove (41310), and the outer side of the second electromagnetic block (41310) is fixedly connected with the second sliding groove (41310).
  4. 4. A multistage thin film evaporator for removing low-boiling substances in polyether according to claim 3, wherein the first connecting rod (410) penetrates through the mounting rod (47) and is connected with the inside of the mounting rod in a sliding manner, and a second connecting rod (412) is fixedly connected to the bottom of the second adjusting mechanism (413) close to the first connecting rod (410).
  5. 5. A multistage thin film evaporator for removing low-boiling substances in polyether according to claim 4, wherein the bottoms of the third gear (45) and the fourth gear (46) are rotatably connected with the bottom in the first mounting box (41), and the mounting rod (47) penetrates through the bottom of the first mounting box (41) and the top of the evaporator body (1) and is rotatably connected with the inside of the evaporator body.
  6. 6. The multistage thin film evaporator for removing low-boiling substances in polyether according to claim 5, wherein the outer side of the connecting pipe (494) is fixedly connected with the first air bag (491), and the piston rod (496) is magnetically adsorbed with the first electromagnetic block (497).
  7. 7. The multistage thin film evaporator for removing low-boiling substances in polyether according to claim 6, wherein the second electromagnetic block (4136) is electrically connected with an external current output device, and the outer wall of the second electromagnetic block (4136) is magnetically adsorbed with the first limiting rod (4137).
  8. 8. The multistage thin film evaporator for removing low-boiling substances in polyether according to claim 7, wherein the outer wall of the second air bag (41311) is in contact with the first limiting rod (4137), and the back of the second limiting rod (4138) is rotatably connected with the front end of the mounting plate (4132).
  9. 9. The multistage thin film evaporator for removing low-boiling substances in polyether according to claim 8, wherein the third electromagnetic block (4143) and the fourth electromagnetic block (41410) are electrically connected with an external current output device, and the inner toothed plate of the gear tooth plate (4144) is slidingly connected with the second sliding groove (4142).

Description

Multistage thin film evaporator for removing low-boiling-point substances in polyether Technical Field The invention relates to the technical field of evaporators, in particular to a multistage thin film evaporator for removing low-boiling-point substances in polyether. Background The multistage film evaporator for eliminating low-boiling point matter in polyether is one kind of efficient separating equipment, and has the core principle of utilizing high vacuum and heated surface to form very thin liquid film on polyether melt under the action of mechanical scraper to provide great evaporating surface area for low-boiling point matter, and the volatile components are evaporated and separated fast and removed via vacuum system. In the using process of the prior art, strong shearing force is difficult to generate, the winding of polyether molecular chains is broken rapidly, the escape of low-boiling-point substances is accelerated, and meanwhile, the product degradation caused by excessive shearing and the deep devolatilization promotion of a uniform film are difficult to maintain are difficult to realize, so that the optimal balance of efficiency and quality is difficult to realize, and the technical limitation of the traditional fixed rotating speed is broken; finally, in the prior art, a vortex flow field is difficult to form in the use process to prolong the material residence time and strengthen the mass transfer, part of equipment is difficult to accurately control the liquid film distribution through a curved surface structure in the use process, dry walls are avoided, therefore, the equipment is difficult to adapt to the evaporation requirements of materials with different viscosities, further, the intelligent transition from impact film scraping to deep devolatilization is difficult to realize, the separation efficiency in a high-viscosity stage is poor, in the use process of the prior art, the problem of devolatilization of the high-viscosity materials is difficult to solve through accurate high-frequency micro-amplitude oscillation, thereby the retention boundary layer is difficult to be effectively destroyed and the diffusion mass transfer of low-boiling substances is difficult to strengthen, part of equipment is difficult to handle the coking risks in different areas in the use process, the equipment is difficult to realize self-adaptive scale inhibition and collaborative optimization with deep devolatilization, the efficiency bottleneck of a traditional scraper is broken through, and the practicability is single. Disclosure of Invention Accordingly, in order to solve the above-mentioned disadvantages, the present invention provides a multistage thin film evaporator for removing low boiling substances from polyether. The invention is realized in such a way, a multistage thin film evaporator for removing low-boiling-point substances in polyether is constructed, the device comprises an evaporator body, a feeding port is fixedly connected to the right upper end of the evaporator body, a discharge port is fixedly connected to the upper part of the front end of the evaporator body, and a differential mechanism is fixedly connected to the top of the evaporator body; The differential mechanism comprises a first mounting box, the first mounting box of evaporimeter body top fixedly connected with, first motor of first mounting box top front end fixedly connected with, first motor bottom output shaft fixedly connected with first gear, first gear back meshing has the second gear, first gear bottom passes through gear lever fixedly connected with third gear, third gear back meshing has the fourth gear, fourth gear bottom fixedly connected with mounting rod, mounting rod outer wall fixedly connected with scraper blade, scraper blade outer wall top fixedly connected with first adjustment mechanism, second gear bottom fixedly connected with head rod, head rod outer wall and friction block frictional contact, head rod below is equipped with the second connecting rod, second connecting rod and head rod bottom equal fixedly connected with second adjustment mechanism, the upper and lower both sides at both ends are all fixedly connected with vibration mechanism about the second connecting rod. Preferably, the first adjustment mechanism includes first gasbag, six first gasbags of scraper blade outer wall top fixedly connected with, first gasbag top glues gluey high performance polytetrafluoroethylene composite bed that is connected with, the bottom fixedly connected with piston cylinder in the installation pole, the equal fixedly connected with of both ends is three sets of connecting pipes about the piston cylinder, connecting pipe delivery port department fixedly connected with solenoid valve, piston cylinder top and piston rod outer wall sliding connection, eight first electromagnetism pieces of top fixedly connected with in the installation pole, and first electromagnetism piece is connected with external curren