A production device for melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling
By designing a production device including a lifting drive mechanism, a sliding assembly, a stirring mechanism and a kettle body, the problems of small stirring range and low working efficiency of the existing reactor are solved, and better stirring effect and operating efficiency are achieved.
Patent Information
- Application Number
- CN202210415538.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-04-18
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2042-04-18
AI Technical Summary
The existing reactor stirring device has a small stirring range, poor mixing effect, and can only add feed after the discharge is completed, reducing working efficiency.
A production device including a lifting drive mechanism, a sliding assembly, a stirring mechanism and a kettle body is designed. The stirring mechanism drives the stirrer upwards through a pneumatic motor to improve the stirring range and mixing effect, and realizes discharge and feeding through an opening and closing mechanism. and improve work efficiency.
By increasing the stirring range and mixing effect, the working efficiency of the reactor is improved, and the operating efficiency is further improved by simultaneously discharging and adding materials.
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Figure CN114849624B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of melamine resin production equipment, in particular to the technical field of a melamine resin production device for a sound insulation and flame retardant mineral wool board for a suspended ceiling. Background Art
[0002] Melamine, commonly known as melamine, is a triazine nitrogen-containing heterocyclic organic compound used as a chemical raw material. It is a white monoclinic crystal, almost odorless, slightly soluble in water, and cannot be used in food processing or food additives. Among them, the reactor is a comprehensive reaction vessel. The design of the reactor structure, function and accessories is based on the reaction conditions. Its structure is generally composed of a reactor body, a transmission device, a stirring device, a heating device, a cooling device, and a sealing device.
[0003] The stirring paddles of the existing reactor stirring devices are mostly fixed, with a small stirring range and poor stirring and mixing effect.
[0004] In addition, the existing reactor can only be charged after the discharge is completed, which reduces the working efficiency. Summary of the invention
[0005] The purpose of the present invention is to solve the problems in the prior art and to provide a production device for melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling, which can increase the stirring range, achieve good stirring and mixing effect and improve work efficiency.
[0006] To achieve the above-mentioned purpose, the present invention proposes a production device of melamine resin for sound-insulating and flame-retardant mineral wool boards for suspended ceilings, comprising a lifting drive mechanism, a sliding assembly, a stirring mechanism and a kettle body, wherein the upper end of the kettle body is provided with a lifting drive mechanism, the driving end of the lifting drive mechanism is provided with a stirring mechanism located in the kettle body, the stirring mechanism is provided with a sliding assembly that is slidably and sealedly connected to the inner wall of the kettle body, the sliding assembly comprises a sliding base and an opening and closing mechanism that is provided on the sliding base and through which fluid can pass, the sliding base is provided with a stirring mechanism, the stirring mechanism comprises a plurality of stirrers, a rotating drive mechanism for driving the stirrers to rotate upward, and a rotating shaft, the rotating shaft is provided with an air intake channel and an exhaust channel, the output end of the exhaust channel and the input end of the air intake channel are provided with air intake and exhaust mechanisms, the stirrer is movably arranged on the rotating shaft, and the stirring The device includes a connecting arm and an air motor arranged on the free end of the connecting arm, the driving end of the air motor is provided with a stirring paddle, the air inlet end of the air motor is connected with the air inlet channel through a pipeline, the rotating drive mechanism includes a fixed seat, a sliding seat, an annular telescopic sealing body, a sliding sealing sleeve and a plurality of support arms, the sliding sealing sleeve is provided with a sliding seal on the rotating shaft, the fixed seat is fixedly provided on the rotating shaft and is located below the sliding sealing sleeve, the sliding seat is provided on the sliding sealing sleeve, a movably connected support arm is provided between the sliding seat and the connecting arm, an annular telescopic sealing body is provided between the fixed seat and the sliding seat, the air outlet end of the air motor is connected with the internal space of the annular telescopic sealing body, the input port of the exhaust channel is connected with the internal space of the annular telescopic sealing body, and the sliding sealing sleeve adjusts the opening and closing amount of the input end of the exhaust channel.
[0007] Preferably, the sliding seat is provided with a plurality of connection ports, and the connection ports are connected with the air outlet ends of the corresponding pneumatic motors through pipelines.
[0008] Preferably, the air intake and exhaust mechanism includes a rotary joint arranged on a sliding base, the inner tube output end of the rotary joint is connected to the input end of the air intake channel, the inner tube input end of the rotary joint is connected to the output end of the air intake joint arranged on the lower end of the kettle body through an air intake hose, the input end of the air intake joint is connected to the air supply pipe through an automatic valve II, the outer tube input end of the rotary joint is connected to the output end of the exhaust channel, the outer tube output end of the rotary joint is connected to the output end of the exhaust joint arranged on the lower end of the kettle body through an exhaust hose, the output end of the exhaust joint is provided with a three-way joint, and the two output ends of the three-way joint are respectively provided with a flow rate sensor and an automatic valve I.
[0009] Preferably, the agitator generates a reverse thrust when working, and under the action of the reverse thrust, the agitator drives the rotating shaft to rotate.
[0010] Preferably, the opening and closing mechanism includes an elastic airbag, an upper annular baffle and a lower annular baffle, and the lower end circumference of the sliding base is provided with an elastic airbag, an upper annular baffle and a lower annular baffle, the elastic airbag is located between the upper annular baffle and the lower annular baffle, and the upper annular baffle and the lower annular baffle are both mesh structures, and the sliding base is provided with a connecting channel connected to the elastic airbag, the connecting channel is connected to one end of the connecting joint on the lower end of the kettle body through a connecting hose, and the other end of the connecting joint is connected to one end of two automatic valves III, and the other end of one of the automatic valves III is provided with a pressure sensor and connected to the air supply pipe.
[0011] Preferably, the lifting drive mechanism is a cylinder, and the piston rod of the cylinder is movably connected to the rotating shaft.
[0012] Preferably, the upper end of the sliding base is conical.
[0013] Preferably, the kettle body includes an inner kettle body, an outer kettle body, a feeding port, a discharging port, a temperature sensor and a cooling spiral coil; the outer kettle body is provided with an inner kettle body, a cavity is formed between the inner kettle body and the outer kettle body, a feeding port is provided at the upper end of the inner kettle body, a discharging port is provided at the lower end of the inner kettle body, a temperature sensor is provided in the inner kettle body, a cooling spiral coil is provided on the outer wall of the inner kettle body, a water inlet and a water outlet respectively connected to the two ends of the cooling spiral coil are provided on the outer kettle body, a heating spiral coil is provided on the outer wall of the inner kettle body, and an oil inlet and an oil outlet respectively connected to the two ends of the heating spiral coil are provided on the outer kettle body.
[0014] Beneficial effects of the present invention: The present invention can increase the stirring range and achieve good stirring and mixing effects by driving the stirrer to rotate upward through the rotary drive mechanism.
[0015] The pneumatic motor is used, which is small in size and safe.
[0016] The rotary drive mechanism uses the gas output by the pneumatic motor to work, which improves energy utilization and reduces the cost of use. There is no need to add a separate power mechanism, which reduces the production cost of the equipment and the energy consumption.
[0017] When discharging, the opening and closing mechanism opens and opens the discharge valve on the discharge port, and the lifting drive mechanism drives the sliding assembly to move upward, so that the fluid material above the sliding assembly enters the bottom of the sliding assembly through the opening and closing mechanism. When the sliding assembly rises to a certain height, the opening and closing mechanism closes, and then the raw materials can be added to the top of the sliding assembly. At the same time, the lifting drive mechanism drives the sliding assembly to move downward, so that raw materials can be added while discharging, which can improve work efficiency.
[0018] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The present invention is a schematic structural diagram of a production device for melamine resin used in sound-insulating and flame-retardant mineral wool boards for suspended ceilings.
[0020] In the figure: 1-lifting drive mechanism, 2-sliding assembly, 3-stirring mechanism, 4-kettle body, 5-intake channel, 6-exhaust channel, 7-rotating joint, 8-intake hose, 9-intake joint, 10-automatic valve II, 11-exhaust hose, 12-exhaust joint, 13-three-way joint, 14-flow rate sensor, 15-automatic valve I, 21-sliding base, 22-opening and closing mechanism, 23-connecting channel, 24-connecting hose, 25-connecting joint, 26-automatic valve III, 27-pressure sensor, 31-stirrer, 32-rotation drive mechanism, 33-rotation shaft, 221 -elastic airbag, 222-upper annular baffle, 223-lower annular baffle, 311-connecting arm, 312-pneumatic motor, 313-stirring paddle, 314-pipeline, 321-fixed seat, 322-sliding seat, 323-annular telescopic sealing body, 324-sliding sealing sleeve, 325-support arm, 326-connecting port, 41-inner kettle body, 42-outer kettle body, 43-feeding port, 44-discharge port, 45-temperature sensor, 46-cooling spiral coil, 47-water inlet, 48-water outlet, 49-heating spiral coil, 410-oil inlet, 411-oil outlet, 412-cavity. DETAILED DESCRIPTION
[0021] See also Figure 1The present invention discloses a production device of melamine resin for sound-insulating and flame-retardant mineral wool board for suspended ceiling, comprising a lifting drive mechanism 1, a sliding assembly 2, a stirring mechanism 3 and a kettle body 4, wherein the upper end of the kettle body 4 is provided with a lifting drive mechanism 1, the driving end of the lifting drive mechanism 1 is provided with a stirring mechanism 3 located in the kettle body 4, the stirring mechanism 3 is provided with a sliding assembly 2 which is slidably and sealedly connected with the inner wall of the kettle body 4, the sliding assembly 2 comprises a sliding base 21 and an opening and closing mechanism 22 which is provided on the sliding base 21 and through which fluid can pass, the sliding base 21 is provided with a stirring mechanism 3, the stirring mechanism 3 comprises a plurality of stirrers 31, a rotating drive mechanism 32 for driving the stirrers 31 to rotate upward, and a rotating shaft 33, the rotating shaft 33 is provided with an air inlet channel 5 and an exhaust channel 6, the output end of the exhaust channel 6 and the input end of the intake channel 5 are provided with an intake and exhaust mechanism, the agitator 31 is movably arranged on the rotating shaft 33, the agitator 31 includes a connecting arm 311 and an air motor 312 arranged on the free end of the connecting arm 311, the driving end of the air motor 312 is provided with a stirring paddle 313, the intake end of the air motor 312 is connected with the intake channel 5 through a pipeline 314, the rotating drive mechanism 32 includes a fixed seat 321, a sliding seat 322, an annular telescopic sealing body 323, a sliding sealing sleeve 324 and a plurality of supporting arms 325, the sliding sealing sleeve 324 is slidingly sealed and arranged on the rotating shaft 33, the fixed seat 321 is fixedly arranged on the rotating shaft 33 and is located at the sliding sealing sleeve 3 24, a sliding seat 322 is provided on the sliding sealing sleeve 324, and a support arm 325 that is movably connected is provided between the sliding seat 322 and the connecting arm 311, and an annular telescopic sealing body 323 is provided between the fixed seat 321 and the sliding seat 322, and the air outlet end of the pneumatic motor 312 is communicated with the internal space of the annular telescopic sealing body 323, and the input end of the exhaust channel 6 is communicated with the internal space of the annular telescopic sealing body 323, and the sliding sealing sleeve 324 adjusts the opening and closing amount of the input end of the exhaust channel 6, and a plurality of connecting ports 326 are provided on the sliding seat 322, and the connecting ports 326 are communicated with the air outlet end of the corresponding pneumatic motor 312 through the pipeline 314, and the air intake and exhaust mechanism includes a plurality of connecting ports 326 that are provided on the sliding base 2 1, the inner tube output end of the rotary joint 7 is communicated with the input end of the air inlet channel 5, the inner tube input end of the rotary joint 7 is communicated with the output end of the air inlet joint 9 arranged on the lower end of the kettle body 4 through the air inlet hose 8, the input end of the air inlet joint 9 is communicated with the air supply pipe through the automatic valve II10, the outer tube input end of the rotary joint 7 is communicated with the output end of the exhaust channel 6, the outer tube output end of the rotary joint 7 is communicated with the output end of the exhaust joint 12 arranged on the lower end of the kettle body 4 through the exhaust hose 11, the output end of the exhaust joint 12 is provided with a three-way joint 13, and the two output ends of the three-way joint 13 are respectively provided with a flow rate sensor 14 and an automatic valve I15, the agitator 31 generates reverse thrust when working,Under the action of the reverse thrust, the agitator 31 drives the rotating shaft 33 to rotate. The opening and closing mechanism 22 includes an elastic airbag 221, an upper annular baffle 222 and a lower annular baffle 223. The lower end circumference of the sliding base 21 is provided with an elastic airbag 221, an upper annular baffle 222 and a lower annular baffle 223. The elastic airbag 221 is located between the upper annular baffle 222 and the lower annular baffle 223. The upper annular baffle 222 and the lower annular baffle 223 are both mesh structures. A connecting channel 23 connected to the elastic airbag 221 is provided on the sliding base 21. The connecting channel 23 is connected to one end of a connecting joint 25 on the lower end of the kettle body 4 through a connecting hose 24. The other end of the connecting joint 25 is connected to one end of two automatic valves III26, and the other end of one of the automatic valves III26 is provided with a pressure sensor 27 and is connected to the air supply pipe. The lifting drive mechanism 1 is a cylinder. The piston rod of the cylinder is movably connected to the rotating shaft 33, the upper end of the sliding base 21 is conical, the kettle body 4 includes an inner kettle body 41, an outer kettle body 42, a feeding port 43, a discharge port 44, a temperature sensor 45 and a cooling spiral coil 46, the outer kettle body 42 is provided with an inner kettle body 41, a cavity 412 is formed between the inner kettle body 41 and the outer kettle body 42, the upper end of the inner kettle body 41 is provided with a feeding port 43, the inner kettle body 41 is provided with a A discharge port 44 is provided at the lower end, a temperature sensor 45 is provided in the inner kettle body 41, a cooling spiral coil 46 is provided on the outer wall of the inner kettle body 41, a water inlet 47 and a water outlet 48 are provided on the outer kettle body 42, which are respectively connected to the two ends of the cooling spiral coil 46, a heating spiral coil 49 is provided on the outer wall of the inner kettle body 41, and an oil inlet 410 and an oil outlet 411 are provided on the outer kettle body 42, which are respectively connected to the two ends of the heating spiral coil 49.
[0022] Working process of the present invention:
[0023] In the working process of the production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling of the present invention, raw materials are added into the inner kettle body 41 from the feeding port 43, and then the automatic valve II10 is controlled to be opened and the automatic valve I15 is half opened through the PLC controller, and the gas passes through the air intake joint 9, the air intake hose 8, the rotary joint 7, the air intake channel 5 and the air motor 312 in sequence, and the air motor 312 drives the stirring paddle 313 to rotate and stir, and the gas passing through the air motor 312 enters the annular telescopic sealing body 323. Since the automatic valve I15 is half opened, the output of the automatic valve I15 and the flow rate sensor 14 is less than the air intake of the annular telescopic sealing body 323, so that the gas in the annular telescopic sealing body 323 gradually increases, thereby pushing the sliding seat 322 to move upward, and the sliding seat 322 drives the support arm 325 and the sliding sealing sleeve 324 to move upward, and the support arm 325 drives the connecting arm 311 to rotate upward, and the connecting arm 311 drives the air motor 312 to rotate upward, and the sliding sealing The sleeve 324 moves upward, reducing the obstruction to the input port 61 of the exhaust channel 6, the output of the exhaust channel 6 increases, and the monitoring value of the flow rate sensor 14 becomes larger. When it reaches a certain value, the PLC controller controls the automatic valve I15 to be fully opened. At this time, the output of the automatic valve I15 and the flow rate sensor 14 is greater than the air intake of the annular telescopic sealing body 323, and the gas in the annular telescopic sealing body 323 is reduced. The stirring mechanism 3 automatically rotates downward under the action of its own weight, and drives the sliding seat 322 to move downward through the support arm 325. The sliding seat 322 drives the sliding sealing sleeve 324 to move downward, and the obstruction to the input port 61 is gradually increased until the protrusion 327 on the lower end of the sliding sealing sleeve 324 is against the fixed seat 321, and the monitoring value of the flow rate sensor 14 becomes smaller. When it reaches a certain value, the PLC controller controls the automatic valve I15 to be half-opened, so that the amount of gas in the annular telescopic sealing body 323 increases, and the rotating drive mechanism 32 drives the agitator 31 again to repeat the above action.
[0024] During heating, the PLC controller controls the valve on the oil inlet 410 to open, and the heat transfer oil passes through the heating spiral coil 49. During cooling, the PLC controller controls the valve on the water inlet 47 to open, and the cooling water passes through the cooling spiral coil 46.
[0025] When discharging, the PLC controller controls the opening and closing mechanism 22 to open and open the discharge valve on the discharge port 44, and the PLC controller controls the lifting drive mechanism 1 to drive the sliding component 2 to move upward, so that the fluid material above the sliding component 2 enters the bottom of the sliding component 2 through the opening and closing mechanism 22. When the sliding component 2 rises to a certain height, the opening and closing mechanism 22 is closed, and then the raw materials can be added to the top of the sliding component 2, and at the same time the lifting drive mechanism 1 drives the sliding component 2 to move downward.
[0026] When the opening and closing mechanism 22 is opened, the automatic valve III26 connected to the outside is opened, and the gas in the elastic airbag 221 is discharged through the automatic valve III26 connected to the outside, and the elastic airbag 221 automatically contracts to achieve opening; when closed, the automatic valve III26 connected to the air supply pipe is opened, the connecting joint 25 is connected to the air supply pipe, and the gas enters the elastic airbag 221 to expand and press against the inner wall of the inner kettle body 41 to achieve closing. When the pressure sensor 27 reaches a certain value, the automatic valve III26 connected to the air supply pipe is closed.
[0027] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.
Claims
1. A production device for melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling, characterized in that: The invention comprises a lifting drive mechanism (1), a sliding assembly (2), a stirring mechanism (3) and a kettle body (4); the lifting drive mechanism (1) is arranged at the upper end of the kettle body (4); the driving end of the lifting drive mechanism (1) is arranged with a stirring mechanism (3) located in the kettle body (4); the stirring mechanism (3) is provided with a sliding assembly (2) which is slidably and sealedly connected to the inner wall of the kettle body (4); the sliding assembly (2) comprises a sliding base (21) and an opening and closing mechanism (22) which is arranged on the sliding base (21) and allows fluid to pass through; the stirring mechanism (3) is provided on the sliding base (21); 3), the stirring mechanism (3) comprises a plurality of stirrers (31), a rotation drive mechanism (32) for driving the stirrers (31) to rotate upward, and a rotating shaft (33), the rotating shaft (33) is provided with an air intake channel (5) and an exhaust channel (6), the output end of the exhaust channel (6) and the input end of the air intake channel (5) are provided with an air intake and exhaust mechanism, the stirrer (31) is movably arranged on the rotating shaft (33), the stirrer (31) comprises a connecting arm (311) and an air motor (312) arranged at the free end of the connecting arm (311), the air motor ( The driving end of the pneumatic motor (312) is provided with a stirring paddle (313), the air inlet end of the pneumatic motor (312) is connected to the air inlet channel (5) through a pipeline (314), the rotating driving mechanism (32) comprises a fixed seat (321), a sliding seat (322), an annular telescopic sealing body (323), a sliding sealing sleeve (324) and a plurality of supporting arms (325), the sliding sealing sleeve (324) is slidingly sealed and arranged on the rotating shaft (33), the fixed seat (321) is fixedly arranged on the rotating shaft (33) and is located below the sliding sealing sleeve (324), and the sliding sealing sleeve (324) is slidingly sealed and arranged on the rotating shaft (33). A sliding seat (322) is provided on the sealing sleeve (324), and a movably connected supporting arm (325) is provided between the sliding seat (322) and the connecting arm (311), and an annular telescopic sealing body (323) is provided between the fixed seat (321) and the sliding seat (322), the air outlet end of the pneumatic motor (312) is connected to the internal space of the annular telescopic sealing body (323), and the input port of the exhaust channel is connected to the internal space of the annular telescopic sealing body (323), and the sliding sealing sleeve (324) adjusts the opening and closing amount of the input end of the exhaust channel (6).
2. The production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to claim 1, characterized in that: The sliding seat (322) is provided with a plurality of connection ports (326), and the connection ports (326) are connected to the air outlet ends of corresponding pneumatic motors (312) through pipelines (314).
3. The production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to claim 1, characterized in that: The air intake and exhaust mechanism comprises a rotary joint (7) arranged on a sliding base (21); the inner tube output end of the rotary joint (7) is connected to the input end of the air intake channel (5); the inner tube input end of the rotary joint (7) is connected to the output end of an air intake joint (9) arranged on the lower end of the kettle body (4) through an air intake hose (8); the input end of the air intake joint (9) is connected to the air supply pipe through an automatic valve II (10); the outer tube input end of the rotary joint (7) is connected to the output end of the exhaust channel (6); the outer tube output end of the rotary joint (7) is connected to the output end of an exhaust joint (12) arranged on the lower end of the kettle body (4) through an exhaust hose (11); the output end of the exhaust joint (12) is provided with a three-way joint (13); the two output ends of the three-way joint (13) are respectively provided with a flow rate sensor (14) and an automatic valve I (15).
4. The production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to claim 1, characterized in that: The stirrer (31) generates a reverse thrust when in operation, and under the action of the reverse thrust, the stirrer (31) drives the rotating shaft (33) to rotate.
5. The production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to claim 1, characterized in that: The opening and closing mechanism (22) comprises an elastic airbag (221), an upper annular baffle (222) and a lower annular baffle (223). The lower end circumference of the sliding base (21) is provided with the elastic airbag (221), the upper annular baffle (222) and the lower annular baffle (223). The elastic airbag (221) is located between the upper annular baffle (222) and the lower annular baffle (223). Both the upper annular baffle (222) and the lower annular baffle (223) are mesh structures. The sliding base (21) is provided with a connecting channel (23) connected to the elastic airbag (221). The connecting channel (23) is connected to one end of a connecting joint (25) on the lower end of the kettle body (4) through a connecting hose (24). The other end of the connecting joint (25) is connected to one end of two automatic valves III (26). The other end of one of the automatic valves III (26) is provided with a pressure sensor (27) and is connected to an air supply pipe.
6. The production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to claim 1, characterized in that: The lifting drive mechanism (1) is a cylinder, and the piston rod of the cylinder is movably connected to the rotating shaft (33).
7. The production device of melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to claim 1, characterized in that: The upper end of the sliding base (21) is in a conical shape.
8. A production device for melamine resin for sound insulation and flame retardant mineral wool board for suspended ceiling according to any one of claims 1 to 7, characterized in that: The kettle body (4) comprises an inner kettle body (41), an outer kettle body (42), a feeding port (43), a discharging port (44), a temperature sensor (45) and a cooling spiral coil (46); the inner kettle body (41) is arranged inside the outer kettle body (42); a cavity (412) is formed between the inner kettle body (41) and the outer kettle body (42); a feeding port (43) is arranged at the upper end of the inner kettle body (41); a discharging port (44) is arranged at the lower end of the inner kettle body (41); A temperature sensor (45) is provided inside the inner kettle body (41), a cooling spiral coil (46) is provided on the outer wall of the inner kettle body (41), a water inlet (47) and a water outlet (48) are provided on the outer kettle body (42) and are respectively connected to the two ends of the cooling spiral coil (46), a heating spiral coil (49) is provided on the outer wall of the inner kettle body (41), and an oil inlet (410) and an oil outlet (411) are provided on the outer kettle body (42) and are respectively connected to the two ends of the heating spiral coil (49).
Citation Information
Patent Citations
Stirring device for sanitary pharmacy agitator and assembly method thereof
CN108295722A
Cyclone stirring device for preventing impurities on inner wall of airflow hole from adhering and blocking
CN111330528A