Devolatilization device for chemical polymer

Abstract

The utility model discloses a devolatilization device for chemical polymers. The devolatilization device comprises a box body and a devolatilization mechanism, a feeding hopper is arranged in a feeding port formed in the left side of the upper end of the box body, a discharging pipe is arranged in a discharging port formed in the lower side of the right end of the box body, and exhaust pipes are arranged in exhaust holes formed in the middle of the upper end of the box body; the devolatilization mechanism comprises a protective cover, output rods, a connecting rod, a driving bevel gear and bevel gears, the protective cover is arranged on the upper side of the left end of the box body, the output rods are rotationally connected to the front side and the rear side of the left wall of the box body through bearings, the bevel gears are arranged on the left sides of the outer arc surfaces of the output rods, and the connecting rod is rotationally connected to the upper side of the interior of the protective cover through bearings; the devolatilization device for the chemical polymer can replace a traditional mode that two screws are driven to rotate through transmission connection between a belt and a belt pulley, the devolatilization device for the chemical polymer is omitted, meanwhile, only one motor is needed, and cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical polymer processing equipment, in particular to a devolatilizer for chemical polymers. Background Technique

[0002] Chemical polymers refer to polymers in which the functional groups in monomer molecules are converted into covalent bonds through chemical reactions. These polymers have many excellent physical and chemical properties, such as high strength, wear resistance, corrosion resistance, etc., so they are widely used in various fields. A devolatilizer for chemical polymers is a device specifically used for devolatilizing chemical polymers. The main purpose is to remove small molecule volatile components such as unreacted monomers, residual solvents, and oligomers generated after the polymerization reaction;

[0003] Most chemical polymers have a very high viscosity. Currently, the devolatilizer for chemical polymers usually uses the transmission connection between a belt and a pulley to drive two screws to rotate. Since the two screws rotate in opposite directions, the chemical polymer is rotationally extruded by the screws to plasticize the chemical polymer, thereby increasing the devolatilization efficiency of the chemical polymer. During the rotational extrusion process, the chemical polymer is heated by a heating device to further increase the volatilization rate of the gas and steam contained in the chemical polymer. Since the velocity directions of the screw and the screw groove in the meshing area are opposite and the relative velocity is large, a relatively high shear velocity is obtained. This shear action can scrape off most of the accumulated material adhering to the screw, ensuring good devolatilization effect and self-cleaning effect at the same time;

[0004] When the existing devolatilizer for chemical polymers is working, although it can drive two screws to rotate through the transmission connection between a belt and a pulley, and then use the screws to rotationally extrude the chemical polymer, the overall structure is relatively complex, which leads to a relatively large floor area of the devolatilizer for chemical polymers. Some devolatilizers for chemical polymers drive two screws to rotate in opposite directions by setting two groups of drive motors. Although this method reduces the floor area of the devolatilizer for chemical polymers, the cost is relatively high. For this reason, we propose a devolatilizer for chemical polymers. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a devolatilizer for chemical polymers. Through the cooperation setting of a worm gear and a worm, the driving bevel gear can drive two screws to rotate in opposite directions, thereby realizing the rotational extrusion of the chemical polymer, further increasing the devolatilization efficiency of the chemical polymer, replacing the traditional method of driving two screws to rotate through the transmission connection between a belt and a pulley, reducing the devolatilizer for chemical polymers, and only one motor is needed to complete, with relatively low cost, which can effectively solve the problems in the background technique.

[0006] To achieve the above object, the utility model provides the following technical solutions: A devolatilizer for chemical polymers, comprising a box body and a devolatilization mechanism;

[0007] Box body: A feed hopper is arranged in the feed inlet opened on the left side of the upper end of the box body, a discharge pipe is arranged in the discharge outlet opened on the lower side of the right end of the box body, and exhaust pipes are arranged in the exhaust holes opened in the middle of the upper end of the box body;

[0008] Devolatilization mechanism: It includes a protective cover, output rods, connecting rods, driving bevel gears and bevel gears. The protective cover is arranged on the upper side of the left end of the box body. The output rods are rotatably connected to the front and rear sides of the left wall of the box body through bearings. Driving bevel gears are arranged on the left side of the outer arc surface of the output rods. The connecting rods are rotatably connected to the upper side inside the protective cover through bearings. Driving bevel gears are arranged on the front and rear sides of the outer arc surface of the connecting rods. The driving bevel gears are respectively meshed and connected with the laterally adjacent bevel gears. Through the cooperation of the worm gear and the worm, the driving bevel gears can drive the two screws to rotate in opposite directions, thereby realizing the rotary extrusion of the chemical polymer, further increasing the devolatilization efficiency of the chemical polymer, replacing the traditional method of driving the two screws to rotate through the transmission connection between the belt and the pulley, reducing the devolatilizer for chemical polymers, and only one motor is needed to complete it, and the cost is relatively low.

[0009] Further, it also includes a control switch group. The control switch group is arranged at the front end of the box body. The input end of the control switch group is electrically connected to an external power supply, and can regulate the electrical components inside the equipment.

[0010] Further, the devolatilization mechanism also includes screws. The screws are rotatably connected to the front and rear sides of the right wall of the box body through bearings. The left ends of the screws are respectively fixedly connected to the left ends of the laterally adjacent output rods, and can use the screws to rotate and extrude the chemical polymer, plasticize the chemical polymer, thereby increasing the devolatilization efficiency of the chemical polymer.

[0011] Further, the devolatilization mechanism also includes a worm gear and a worm. The worm gear is arranged in the middle of the outer arc surface of the connecting rod. The worm is rotatably connected to the lower side of the left wall of the protective cover through a bearing. The worm gear is meshed with the worm, and can drive the output rod to rotate through the driving bevel gear.

[0012] Further, the devolatilization mechanism also includes a motor. The motor is arranged on the lower side of the left end of the protective cover. The right end of the output shaft of the motor is fixedly connected to the left end of the worm. The input end of the motor is electrically connected to the output end of the control switch group, and can drive the connecting rod to rotate through the worm gear.

[0013] Further, it also includes an installation groove and an electric heating wire. The installation groove is arranged in the middle of the interior of the box body, and the electric heating wire is arranged inside the installation groove. The input end of the electric heating wire is electrically connected to the output end of the control switch group, which can heat the chemical polymer and further increase the volatilization rate of the gas and steam contained in the chemical polymer.

[0014] Further, it also includes a fixing plate and a support seat. The fixing plates are respectively arranged on the left and right sides outside the box body, and the support seats are all arranged at the lower ends of the fixing plates to realize the support and fixation of the box body and the internal equipment.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: This devolatilizer for chemical polymers has the following advantages:

[0016] After the chemical polymer inside the feed hopper flows into the interior of the box body, through the regulation of the control switch group, the motor starts to operate. The output shaft of the motor drives the worm to rotate, and the worm drives the worm wheel to rotate through meshing connection. During the rotation of the worm wheel, the two driving bevel gears are driven to rotate through the connecting rod. The driving bevel gear drives the bevel gear to rotate through meshing connection, and the bevel gear drives the screw to rotate through the output rod. Since the rotation directions of the two screws are opposite, the chemical polymer is rotationally extruded by the screws to plasticize the chemical polymer, thereby increasing the devolatilization efficiency of the chemical polymer. Through the cooperative setting of the worm wheel and the worm, the driving bevel gear can drive the two screws to rotate in opposite directions, thereby realizing the rotational extrusion of the chemical polymer and further increasing the devolatilization efficiency of the chemical polymer. It replaces the traditional way of driving the two screws to rotate through the transmission connection between the belt and the belt pulley, reducing the size of the devolatilizer for chemical polymers, and only one motor is required to complete the operation, with relatively low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the devolatilization mechanism of the present utility model.

[0019] In the figure: 1 box body, 2 control switch group, 3 feed hopper, 4 discharge pipe, 5 devolatilization mechanism, 51 protective cover, 52 output rod, 53 screw, 54 connecting rod, 55 driving bevel gear, 56 bevel gear, 57 worm wheel, 58 worm, 59 motor, 6 installation groove, 7 electric heating wire, 8 exhaust pipe, 9 fixing plate, 10 support seat. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1-2 , this embodiment provides a technical solution: a devolatilizer for chemical polymers, which includes a box body 1 and a devolatilization mechanism 5;

[0022] Box body 1: A feed hopper 3 is arranged in the feed inlet opened on the left side of the upper end of the box body 1, a discharge pipe 4 is arranged in the discharge outlet opened on the lower side of the right end of the box body 1, and exhaust pipes 8 are arranged in the exhaust holes opened in the middle of the upper end of the box body 1. During operation, the chemical polymer that needs to be devolatilized is poured into the inside of the feed hopper 3 through external equipment. The chemical polymer inside the feed hopper 3 finally flows into the inside of the box body 1. Then, through the regulation of the control equipment, the devolatilization equipment starts to operate. The devolatilization equipment rotates and extrudes the chemical polymer to plasticize the chemical polymer, thereby increasing the devolatilization efficiency of the chemical polymer. During the process of extruding and advancing the chemical polymer, the chemical polymer is heated by a heating device to further increase the volatilization rate of the gas and steam contained in the chemical polymer. The volatilized gas and steam are discharged through the exhaust pipe 8, and the chemical polymer after devolatilization is finally discharged through the discharge pipe 4.

[0023] Devolatilization mechanism 5: It includes a protective cover 51, an output rod 52, a connecting rod 54, a driving bevel gear 56 and a bevel gear 56. The protective cover 51 is arranged on the upper side of the left end of the box body 1. The output rods 52 are rotatably connected to the front and rear sides of the left wall of the box body 1 through bearings. Bevel gears 56 are arranged on the left sides of the outer arc surfaces of the output rods 52. The connecting rod 54 is rotatably connected to the upper side inside the protective cover 51 through a bearing. Driving bevel gears 56 are arranged on the front and rear sides of the outer arc surface of the connecting rod 54. The driving bevel gears 56 are respectively meshed and connected with the laterally adjacent bevel gears 56. The devolatilization mechanism 5 further includes screw rods 53. The screw rods 53 are rotatably connected to the front and rear sides of the right wall of the box body 1 through bearings. The left ends of the screw rods 53 are respectively fixedly connected to the left ends of the laterally adjacent output rods 52. The devolatilization mechanism 5 further includes a worm gear 57 and a worm 58. The worm gear 57 is arranged in the middle of the outer arc surface of the connecting rod 54. The worm 58 is rotatably connected to the lower side of the left wall of the protective cover 51 through a bearing. The worm gear 57 is meshed and connected with the worm 58. The devolatilization mechanism 5 further includes a motor 59. The motor 59 is arranged on the lower side of the left end of the protective cover 51. The right end of the output shaft of the motor 59 is fixedly connected to the left end of the worm 58. The input end of the motor 59 is electrically connected to the output end of the control switch group 2. After the chemical polymer in the feed hopper 3 flows into the inside of the box body 1, through the regulation of the control device, the motor 59 starts to operate. The output shaft of the motor 59 drives the worm 58 to rotate. The worm 58 drives the worm gear 57 to rotate through meshing connection. During the rotation of the worm gear 57, it drives the two driving bevel gears 56 to rotate through the connecting rod 54. The driving bevel gear 55 drives the bevel gear 56 to rotate through meshing connection. The bevel gear 56 drives the screw rod 53 to rotate through the output rod 52. Since the rotation directions of the two screw rods 53 are opposite, the chemical polymer is rotationally extruded by the screw rods 53, and the chemical polymer is plasticized, thereby increasing the devolatilization efficiency of the chemical polymer. Through the cooperative setting of the worm gear 57 and the worm 58, the driving bevel gear 55 can drive the two screw rods 53 to rotate in opposite directions, thereby realizing the rotational extrusion of the chemical polymer and further increasing the devolatilization efficiency of the chemical polymer. It replaces the traditional way of driving the two screw rods 53 to rotate through the transmission connection between the belt and the pulley, reduces the chemical polymer devolatilizer, and only requires one motor to complete, with relatively low cost.

[0024] Among them: It further includes a control switch group 2. The control switch group 2 is arranged at the front end of the box body 1. The input end of the control switch group 2 is electrically connected to an external power supply, and can regulate the electrical components inside the equipment.

[0025] Among them: It also includes an installation groove 6 and an electric heating wire 7. The installation groove 6 is arranged in the middle inside the box body 1, and the electric heating wire 7 is arranged inside the installation groove 6. The input end of the electric heating wire 7 is electrically connected to the output end of the control switch group 2. During the process of extruding and pushing the chemical polymer, through the regulation of the control switch group 2, the electric heating wire 7 starts to operate, so as to heat the chemical polymer through the electric heating wire 7, further increasing the volatilization speed of the gas and steam contained in the chemical polymer. The volatilized gas and steam are discharged through the exhaust pipe 8.

[0026] Among them: It also includes a fixing plate 9 and a support seat 10. The fixing plates 9 are respectively arranged on the left and right sides outside the box body 1, and the support seats 10 are all arranged at the lower ends of the fixing plates 9. Before use, the chemical polymer degassing device is moved to the designated working location through an external traction device, and the support seat 10 is installed and docked with the corresponding working station, so as to realize the support and fixation of the box body 1 and the internal equipment.

[0027] The working principle of a chemical polymer degassing device provided by the present utility model is as follows: Before use, the chemical polymer degassing device is moved to the designated working location through an external traction device, and the support seat 10 is installed and docked with the corresponding working station, so as to realize the support and fixation of the box body 1 and the internal equipment. During work, the chemical polymer to be degassed is poured into the inside of the feed hopper 3 through an external device. The chemical polymer inside the feed hopper 3 finally flows into the inside of the box body 1. At this time, through the regulation of the control switch group 2, the motor 59 starts to operate. The output shaft of the motor 59 drives the worm 58 to rotate. The worm 58 drives the worm wheel 57 to rotate through meshing connection. During the rotation of the worm wheel 57, two driving bevel gears 56 are driven to rotate through the connecting rod 54. The driving bevel gear 55 drives the bevel gear 56 to rotate through meshing connection. The bevel gear 56 drives the screw 53 to rotate through the output rod 52. Since the rotation directions of the two screws 53 are opposite, the chemical polymer is rotationally extruded by the screws 53 to plasticize the chemical polymer, thereby increasing the degassing efficiency of the chemical polymer. During the process of extruding and pushing the chemical polymer, through the regulation of the control switch group 2, the electric heating wire 7 starts to operate, so as to heat the chemical polymer through the electric heating wire 7, further increasing the volatilization speed of the gas and steam contained in the chemical polymer. The volatilized gas and steam are discharged through the exhaust pipe 8. The chemical polymer after degassing finally is discharged through the discharge pipe 4.

[0028] It should be noted that the motor 59 disclosed in the above embodiments can be selected as 5I K200A - AF. Control buttons for controlling their switches corresponding to the motor 59 and the electric heating wire 7 one by one are arranged on the control switch group 2.

[0029] The above are only embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. A devolatilizer for chemical polymers, characterized in that: It includes a box body (1) and a devolatilization mechanism (5); Box body (1): A feed hopper (3) is arranged in the feed inlet opened on the left side of the upper end of the box body (1), a discharge pipe (4) is arranged in the discharge outlet opened on the lower side of the right end of the box body (1), and exhaust pipes (8) are arranged in the exhaust holes opened in the middle of the upper end of the box body (1); Devolatilization mechanism (5): It includes a protective cover (51), an output rod (52), a connecting rod (54), a driving bevel gear (55) and a bevel gear (56). The protective cover (51) is arranged on the upper side of the left end of the box body (1). The output rods (52) are rotatably connected to the front and rear sides of the left wall of the box body (1) through bearings. Bevel gears (56) are arranged on the left side of the outer arc surface of the output rods (52). The connecting rod (54) is rotatably connected to the upper side inside the protective cover (51) through a bearing. Driving bevel gears (55) are arranged on the front and rear sides of the outer arc surface of the connecting rod (54). The driving bevel gears (55) are respectively meshed and connected with the laterally adjacent bevel gears (56).

2. The devolatilizer for chemical polymers according to claim 1, characterized in that: It also includes a control switch group (2). The control switch group (2) is arranged at the front end of the box body (1), and the input end of the control switch group (2) is electrically connected to an external power supply.

3. The devolatilizer for chemical polymers according to claim 1, characterized in that: The devolatilization mechanism (5) also includes a screw rod (53). The screw rods (53) are rotatably connected to the front and rear sides of the right wall of the box body (1) through bearings, and the left ends of the screw rods (53) are respectively fixedly connected to the left ends of the laterally adjacent output rods (52).

4. The devolatilizer for chemical polymers according to claim 2, characterized in that: The devolatilization mechanism (5) also includes a worm gear (57) and a worm (58). The worm gear (57) is arranged in the middle of the outer arc surface of the connecting rod (54). The worm (58) is rotatably connected to the lower side of the left wall of the protective cover (51). The worm gear (57) is meshed and connected with the worm (58).

5. The devolatilizer for chemical polymers according to claim 4, characterized in that: The devolatilization mechanism (5) also includes a motor (59). The motor (59) is arranged on the lower side of the left end of the protective cover (51). The right end of the output shaft of the motor (59) is fixedly connected to the left end of the worm (58). The input end of the motor (59) is electrically connected to the output end of the control switch group (2).

6. The devolatilizer for chemical polymers according to claim 2, wherein: It also includes a mounting groove (6) and an electric heating wire (7). The mounting groove (6) is arranged in the middle of the inside of the box body (1), the electric heating wire (7) is arranged inside the mounting groove (6), and the input end of the electric heating wire (7) is electrically connected to the output end of the control switch group (2).

7. The devolatilizer for chemical polymers according to claim 1, characterized in that: It also includes fixing plates (9) and support seats (10). The fixing plates (9) are respectively arranged on the left and right sides outside the box body (1), and the support seats (10) are arranged at the lower ends of the fixing plates (9).

Images