CN108003009B

CN108003009B - Improved zinc stearate preparing method

Info

Publication number: CN108003009B
Application number: CN201711313490.0A
Authority: CN
Inventors: 林晓丽; 陈晔
Original assignee: Tangshan Shiqian Technology Co Ltd
Current assignee: Tangshan Shiqian Technology Co ltd
Priority date: 2016-08-15
Filing date: 2016-08-15
Publication date: 2020-08-07
Anticipated expiration: 2036-08-15
Also published as: CN107935841A; CN108003009A; CN107935841B; CN106316827A; CN106316827B

Abstract

The invention provides a method for preparing improved zinc stearate. The method solves the technical problems that single crushing is adopted in the existing production process, the product consistency is poor and the like. The preparation method of the improved zinc stearate comprises the following steps: a. conveying stearic acid in a liquid state into a reaction kettle through a conveying pump for stirring and heating, wherein the stirring time is 24min, and the heating temperature is 130 ℃; b. adding zinc oxide into a reaction kettle for three times, and reacting at 170 ℃ and 0.21Mpa for 45 min; c. conveying the reacted zinc stearate to a tablet press for tabletting; d. coarsely crushing the pressed zinc stearate by a common crusher; e. and (3) finely crushing the coarsely crushed zinc stearate by using an airflow crushing system to obtain the zinc stearate. The invention has the advantage of good product consistency.

Description

Improved zinc stearate preparing method

Technical Field

The invention relates to a preparation method, in particular to a preparation method of improved zinc stearate.

Background

Zinc stearate is mainly used as a lubricant and a mold release agent for styrene resin, phenolic resin and amino resin; meanwhile, the rubber also has the functions of a vulcanization activator and a softener.

Through search, for example, chinese patent document discloses an improved zinc stearate production process [ application No.: 201510771630.3, respectively; publication No.: CN 105348072a ]. The improved zinc stearate production process is characterized by comprising the following steps of: (a) heating stearic acid in a reaction kettle for melting, adding zinc oxide at the temperature of 120-150 ℃ under high-speed stirring, reacting for 10-15 minutes, and then adding pure water; (b) vacuumizing: sealing the reaction kettle, vacuumizing to 50-500Pa, reacting for 20-30 min, cooling, and pulverizing in a pulverizer.

Although the production process disclosed in the patent has very obvious economic and social benefits, the production process adopts single crushing, and the consistency of the product is poor, so that a need exists for designing an improved method for preparing zinc stearate.

Disclosure of Invention

The invention aims to provide an improved manufacturing method of zinc stearate, aiming at the problems in the prior art, and the manufacturing method has the characteristic of good product consistency.

The purpose of the invention can be realized by the following technical scheme: the improved zinc stearate manufacturing method is characterized by comprising the following steps:

a. conveying stearic acid in a liquid state into a reaction kettle through a conveying pump for stirring and heating, wherein the stirring time is 20-28min, and the heating temperature is 120-150 ℃;

b. adding zinc oxide into a reaction kettle for three times, and reacting at the temperature of 160-180 ℃ and the pressure of 0.18-0.24Mpa for 40-50 min;

c. conveying the reacted zinc stearate to a tablet press for tabletting;

d. coarsely crushing the pressed zinc stearate by a common crusher;

e. and (3) finely crushing the coarsely crushed zinc stearate by using an airflow crushing system to obtain the zinc stearate.

By adopting the method, the product is crushed twice by the crusher and the airflow crushing system, so that the quality of the product can be ensured, and the product consistency is good.

The jet milling system in the step e comprises a rack, wherein a feeding device, a decomposing device and a collecting device are arranged on the rack, the feeding device comprises a storage tank and a feeding pipe, the storage tank is fixed on the rack, an input port is arranged at the upper end of the storage tank, the lower end of the storage tank is communicated with the pipe wall of the feeding pipe through a guide pipe, an installation pipe is arranged between the storage tank and the guide pipe, the upper end of the installation pipe is communicated with the lower end of the storage tank, the lower end of the installation pipe is communicated with the guide pipe, a conveying mechanism capable of conveying materials in the storage tank to the guide pipe is arranged on the installation pipe, and a dredging mechanism capable of dredging the lower end of the; the decomposing device comprises a decomposing tank, a positioning ring, a plurality of air supply pipes, a feeding pipe and an air compressor, wherein the decomposing tank is arranged on a rack, the positioning ring is arranged in the decomposing tank, the positioning ring is positioned in the middle of the decomposing tank, the air outlet ends of the plurality of air supply pipes penetrate through the side wall of the decomposing tank and are fixed on the positioning ring, the air outlet ends face the center of the positioning ring, the air inlet ends of the air supply pipes are communicated with the air compressor through a first communicating pipe, the discharge ends of the feeding pipes are fixed in the decomposing tank, the discharge ends face the positioning ring, the feed ends of the feeding pipes penetrate through the side wall of the decomposing tank and are communicated with the feeding pipe, the; the collecting device comprises a collecting tank, an output pipe and an output screw rod, the collecting tank is fixed on the rack, the upper end of the collecting tank is provided with an inlet, the inlet of the collecting tank is communicated with the upper part of the decomposition tank, the lower end of the collecting tank is provided with an outlet, the outlet of the collecting tank is communicated with the pipe wall of the output pipe, one end of the output pipe is a closed end, the other end of the output pipe is an output end, a positioning piece for positioning is arranged on the output end, one end of the output screw rod is arranged in the output pipe, the closed end of the output screw rod, which penetrates out of the output pipe, is connected with a driving mechanism capable of driving the output pipe to rotate, a blocking box is further fixed on the rack, the side part of the blocking box is provided with an opening, a box door capable of closing the opening is hinged on the blocking box.

The working principle of the jet milling system is as follows: the raw materials in the storage tank are conveyed into the guide pipe through the conveying mechanism, and enter the feeding pipe under the action of self gravity, so that the feeding operation of the raw materials is realized; raw materials in the feeding pipe are conveyed into the decomposing tank through the feeding pipe, compressed air is conveyed into the decomposing tank through the air supply pipe by the air compressor, the raw materials are impacted at high speed by the air, friction is generated among the raw materials and the raw materials are decomposed into nanoscale powder, particles which meet the requirements are screened out through the screening mechanism, and particles which do not meet the requirements are recovered through the recovery mechanism, so that the decomposing operation is completed; the nanoscale powder is conveyed into the collecting tank, the material bag is fixed at the output end of the output pipe through the positioning piece, the output screw rod is driven to rotate through the driving mechanism, the nanoscale powder in the collecting tank is conveyed into the material bag along with the rotation of the output screw rod, and dust in the separation box is sucked through the dust suction mechanism, so that the collecting operation is realized.

Conveying mechanism includes carrying axle and gear motor, carries the axle level to set up in the installation pipe, and carries the axle to be located the gas outlet below of gas-supply pipe, carries the axle head and gear motor's output shaft to link to each other, carries epaxial a plurality of transport blade that are fixed with.

During the stand pipe is carried to the raw materials of storage tank as required, control gear motor's output shaft drives and carries the axle rotation, carries the axle to drive and carries the blade rotation, along with carrying blade's rotation, can carry the raw materials of storage tank in the stand pipe.

The dredging mechanism comprises a gas pipe, the gas outlet of the gas pipe penetrates through the pipe wall of the installation pipe and is located in the installation pipe, the gas inlet of the gas pipe is communicated with the air compressor, an electromagnetic valve is arranged in the gas pipe, and a control structure capable of controlling the electromagnetic valve to work is further arranged on the machine frame.

When the lower extreme of storage tank blockked up, the solenoid valve is controlled through control structure and is got electric, and the solenoid valve makes the gas-supply pipe intercommunication, and the air machine makes the raw materials rebound of storage tank lower extreme, dredges it with the air inlet of gas-supply pipe with the air transport in, the gas outlet of gas-supply pipe to can ensure the normal clear of pay-off operation, job stabilization nature is good.

The control structure comprises an elastic sheet, a travel switch and a first controller, one end of the elastic sheet is fixed on the pipe wall of the guide pipe, the other end of the elastic sheet is a free end, the travel switch is fixed on the pipe wall of the guide pipe and located above the elastic sheet, the free end of the elastic sheet can be in contact with the travel switch, and the travel switch and the electromagnetic valve are connected with the first controller.

Under normal conditions, the elastic sheet deforms downwards under the action of the gravity of the raw materials, the free end of the elastic sheet is separated from the travel switch, the travel switch transmits a signal to the first controller, and the first controller enables the electromagnetic valve to be powered off; when the lower extreme of storage tank blockked up, the free end and the travel switch contact of flexure strip, travel switch gives first controller with signal transmission, and first controller makes the solenoid valve electrified, and control is convenient, quick.

Screening mechanism is including screening board, shock dynamo, discharging pipe and first air suction pump, and the screening board sets up in decomposing the jar, and the screening board is located decomposing jar upper portion, has seted up a plurality of punishment in advance holes on the screening board, and shock dynamo passes through the mounting bracket to be fixed on the screening board, and discharging pipe one end is linked together with decomposing jar upper portion, and the discharging pipe other end is linked together with the holding vessel, and first air suction pump sets up in the discharging pipe.

When particles meeting the requirements are required to be screened out, the first air suction pump is started, the particles meeting the requirements can pass through the material passing hole of the screening plate and are conveyed into the collecting tank through the discharge pipe, and screening is rapid; the screening plate vibrates through the vibration motor, so that blockage of the material passing hole can be avoided, and the working stability is good.

The recycling mechanism comprises a recycling pipe and a second air suction pump, one end of the recycling pipe is communicated with the lower portion of the decomposition tank, the other end of the recycling pipe is communicated with the storage tank, and the second air suction pump is arranged in the recycling pipe.

When the particles which do not meet the requirements need to be recovered, the second air suction pump is started, and the particles are conveyed into the storage tank through the recovery pipe and are decomposed again.

The frame is also provided with a regulating mechanism capable of regulating the flow of the first communicating pipe, the regulating mechanism comprises a pressure sensor, a first flow regulating valve and a second controller, the pressure sensor and the first flow regulating valve are sequentially arranged in the first communicating pipe, the pressure sensor is positioned between the first flow regulating valve and the decomposing tank, and the pressure sensor and the first flow regulating valve are both connected with the second controller.

Structure more than adopting, give the second controller through pressure sensor with signal transmission, the degree of opening of first flow control valve is controlled to the second controller to can realize the dynamic control of first connecting pipe flow, the regulation and control is accurate.

The setting element includes the rubber circle, and the rubber circle cover is established and is fixed on the output end of output tube, has a plurality of bulges on the rubber circle lateral surface.

By adopting the structure, the material bag is sleeved on the output end of the output pipe, and the material bag is positioned by the elasticity of the rubber ring, so that the positioning is reliable; the friction force between the rubber ring and the material bag can be increased through the convex part, and the working stability is good.

The dust collection mechanism comprises a first fan, a third air suction pump and an air suction pipe, the first fan is fixed in the separation box, the first fan is positioned above the output pipe, an air outlet of the first fan faces downwards, one end of the air suction pipe is communicated with the bottom of the separation box, the other end of the air suction pipe is communicated with the third air suction pump, and a filter bag is arranged in the air suction pipe.

When dust in the separation box is sucked and removed, air in the separation box is conveyed downwards through the first fan, the dust moves downwards along with the air, the dust in the separation box is sucked and removed through the third suction pump and is sucked into the filter bag, and the suction is convenient and quick.

The driving mechanism comprises a motor, a driving gear and a driven gear, the motor is fixed on the rack, the driving gear is fixed on an output shaft of the motor, the driven gear is fixed on an output screw rod, and the driving gear is meshed with the driven gear.

When the output screw rod needs to be rotated, the output shaft of the control motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, and the driven gear drives the output screw rod to rotate, so that the output screw rod can be rotated.

The air compressor cooling device is characterized in that a cooling mechanism used for cooling the air compressor is arranged on the rack, the cooling mechanism comprises a mounting support and a second fan, the mounting support is arranged on the rack, a damping block is arranged between the mounting support and the rack, the second fan is arranged on the mounting support through a moving mechanism capable of driving the second fan to horizontally move, the second fan is located above the air compressor, and an air outlet of the second fan faces towards the air compressor.

When the air compressor needs to be cooled, the moving mechanism drives the second fan to horizontally move, the moving second fan can cool the whole air compressor, and the work is reliable.

The moving mechanism comprises a first arc-shaped guide rail, a first sliding block, a mounting plate, a servo motor and a gear, the first guide rail is fixed on the mounting support, teeth are arranged on the inner arc surface of the first guide rail, the first sliding block is arranged in the first guide rail, the mounting plate is fixed on the first sliding block, the servo motor is fixed on the upper surface of the mounting plate, an output shaft of the servo motor is vertically downward, the gear is fixed on the output shaft of the servo motor, the gear is meshed with the teeth of the first guide rail, and the second fan drives a lifting mechanism of the second fan to ascend and descend through the second fan to be arranged on the lower surface of the mounting plate.

When needs make second fan horizontal migration, control servo motor's output shaft drives gear revolve, and the tooth meshing of gear and first guide rail makes first slider along first guide rail horizontal migration, and first slider drives mounting panel horizontal migration, and the mounting panel drives second fan horizontal migration to can make second fan horizontal migration.

The lifting mechanism comprises a push rod motor, a second sliding block and a second guide rail, the second guide rail is fixed to the lower surface of the mounting plate through a connecting frame, the second sliding block is arranged in the second guide rail, the push rod motor is fixed to the lower surface of the mounting plate, a push rod of the push rod motor is vertically downward, the end portion of the push rod motor is connected with the second sliding block, and the second fan is fixed to the second sliding block.

When the second fan is required to move up and down, the push rod of the push rod motor is controlled to drive the second sliding block to move up and down along the second guide rail, the second sliding block drives the second fan to move up and down, air compressors of different models can be cooled, and adaptability is high.

Still be provided with the control mechanism that can control servo motor and open and stop in the frame, control mechanism includes a plurality of temperature sensor, display screen and third controller, and a plurality of temperature sensor set up respectively on the air compressor machine, and temperature sensor evenly arranges, and the display screen is fixed in the frame, and temperature sensor, display screen and servo motor all link to each other with this third controller.

By adopting the structure, the temperature sensor detects the temperature of the air compressor, the signal is transmitted to the third controller, the third controller displays the temperature value through the display screen, meanwhile, the third controller controls the servo motor to work, the servo motor enables the second fan to move horizontally, and the control is convenient.

Compared with the prior art, the improved preparation method of the zinc stearate has the following advantages:

1. in the manufacturing method, the pulverizer and the airflow pulverizing system are used for pulverizing the raw materials twice, so that the quality of products can be ensured, and the consistency of the products is good.

2. Air is conveyed into the air conveying pipe through the air compressor, raw materials at the lower end of the storage tank are moved upwards through the air conveying pipe, normal feeding operation can be guaranteed, and working stability is good.

3. Make the raw materials receive high-speed impact through the air, produce friction each other and decompose into nanometer powder, select the granule that will meet the demands, retrieve the granule that does not meet the demands, need not artifical too much operation, the decomposition efficiency is high.

4. The dust in the separation box is moved downwards through the first fan, and is sucked through the third suction pump, so that the dust is conveniently sucked.

5. The second sliding block is driven to move up and down through the push rod motor, the second sliding block drives the second fan to move up and down, air compressors of different models can be cooled, and adaptability is high.

Drawings

Fig. 1 is a schematic plan view of the feeding device.

Fig. 2 is a sectional view of the feeding device with parts removed.

Fig. 3 is a sectional view of the present decomposition device.

Fig. 4 is a sectional view of the present dissembling apparatus with parts removed.

Fig. 5 is a schematic plan view of the present collection device.

Fig. 6 is a partially enlarged schematic view at a in fig. 5.

Fig. 7 is a schematic perspective view of the baffle box of the collecting device.

Fig. 8 is a schematic perspective view of the cooling mechanism.

Fig. 9 is a perspective view of the cooling mechanism with parts removed.

In the figure, 1, a frame; 2. a reduction motor; 3. a guide tube; 4. a feed pipe; 4a, a connecting part; 5. a first controller; 6. installing a pipe; 7. a material storage tank; 8. a gas delivery pipe; 9. an electromagnetic valve; 11. a delivery shaft; 12. a conveying blade; 13. a guide housing; 14. a travel switch; 15. an elastic sheet; 20. an air compressor; 21. a first flow regulating valve; 22. a first communication pipe; 23. a pressure sensor; 24. a second controller; 25. a rubber plate; 26. a recovery pipe; 27. a second getter pump; 28. a gas supply pipe; 29. a positioning ring; 30. a decomposition tank; 30a, an access hole; 31. screening the plate; 32. vibrating a motor; 33. a mounting frame; 34. a first aspirator pump; 35. a discharge pipe; 36. a feed pipe; 37. a cover plate; 40. an output screw; 41. a second communicating pipe; 42. an output pipe; 42a, closed end; 42b, an output end; 43. a second flow regulating valve; 44. a third getter pump; 45. an air intake duct; 46. a barrier box; 47. a collection tank; 48. a driving gear; 49. a motor; 50. a driven gear; 51. a filter bag; 52. a box door; 53. a first fan; 54. a rubber ring; 55. an observation plate; 60. a third controller; 61. a display screen; 63. a damper block; 64. mounting a bracket; 65. a first guide rail; 65a, teeth; 66. a gear; 67. a servo motor; 68. mounting a plate; 69. a second fan; 70. a temperature sensor; 71. a push rod motor; 72. a second slider; 73. a second guide rail; 74. a connecting frame; 75. a first slider.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The preparation method of the improved zinc stearate comprises the following steps:

a. conveying stearic acid in a liquid state into a reaction kettle through a conveying pump for stirring and heating, wherein the stirring time is 20-28min, the heating temperature is 120-;

b. adding zinc oxide into a reaction kettle for three times, and reacting at the temperature of 160-180 ℃ and the pressure of 0.18-0.24Mpa for 40-50min, in the embodiment, reacting at the temperature of 170 ℃ and the pressure of 0.21Mpa for 45 min;

c. conveying the reacted zinc stearate to a tablet press for tabletting;

d. coarsely crushing the pressed zinc stearate by a common crusher;

As shown in fig. 1, 2, 3, 4, 5 and 7, the jet milling system in step e includes a frame 1, a feeding device, a decomposing device and a collecting device are arranged on the frame 1, the feeding device includes a storage tank 7 and a feeding pipe 4, the storage tank 7 is fixed on the frame 1 by means of bolt connection, an input port is arranged at the upper end of the storage tank 7, and the lower end of the storage tank 7 is communicated with the pipe wall of the feeding pipe 4 through a guide pipe 3; a mounting pipe 6 is arranged between the storage tank 7 and the guide pipe 3, the upper end of the mounting pipe 6 is communicated with the lower end of the storage tank 7, the lower end of the mounting pipe 6 is communicated with the guide pipe 3, a conveying mechanism capable of conveying materials in the storage tank 7 to the guide pipe 3 is arranged on the mounting pipe 6, and a dredging mechanism capable of dredging the lower end of the storage tank 7 is arranged on the rack 1; the two ends of the feeding pipe 4 are provided with trumpet-shaped connecting parts 4a, and by adopting the structure, the feeding pipe 4 and the feeding pipe 36 can be conveniently connected together; the decomposing device comprises a decomposing tank 30, a positioning ring 29, a plurality of air supply pipes 28, a feeding pipe 36 and an air compressor 20, wherein the decomposing tank 30 is arranged on the frame 1, and a buffer structure is also arranged between the decomposing tank 30 and the frame 1; the buffer structure is a rubber plate 25, and by adopting the structure, the buffer structure has better buffer and shock absorption performance; the positioning ring 29 is arranged in the decomposition tank 30, the positioning ring 29 is positioned in the middle of the decomposition tank 30, the air outlet ends of the air supply pipes 28 penetrate through the side wall of the decomposition tank 30 and are fixed on the positioning ring 29, in the embodiment, the number of the air supply pipes 28 is twelve, and the air outlet ends of the air supply pipes 28 are fixed on the positioning ring 29 in a bolt connection mode; the air outlet end faces the center of the positioning ring 29, the air inlet end of the air supply pipe 28 is communicated with the air compressor 20 through a first communication pipe 22, the discharge end of the feed pipe 36 is fixed in the decomposition tank 30, and the discharge end of the feed pipe 36 is fixed in the decomposition tank 30 through a connecting rod; the discharge end faces the positioning ring 29, the feed end of the feed pipe 36 penetrates through the side wall of the decomposing tank 30 and is communicated with the feed pipe 4, the upper part of the decomposing tank 30 is provided with a screening mechanism, and the lower part of the decomposing tank 30 is provided with a recovery mechanism; the decomposing tank 30 is also provided with an access opening 30a, and the decomposing tank 30 is hinged with a cover plate 37 capable of sealing the access opening 30 a; the collecting device comprises a collecting tank 47, an output pipe 42 and an output screw 40, the collecting tank 47 is fixed on the rack 1 in a bolt connection mode, the upper end of the collecting tank 47 is provided with an inlet, the inlet of the collecting tank 47 is communicated with the upper part of the decomposing tank 30, the lower end of the collecting tank 47 is provided with an outlet, the outlet of the collecting tank 47 is communicated with the pipe wall of the output pipe 42, and the outlet of the collecting tank 47 is communicated with the pipe wall of the output pipe 42 through a second communicating pipe 41; one end of the output pipe 42 is a closed end 42a, the other end of the output pipe 42 is an output end 42b, a positioning piece for positioning is arranged on the output end 42b, and the material bag is fixed on the output end 42b through the positioning piece; one end of the output screw 40 is positioned in the output pipe 42, the other end of the output screw 40 penetrates out of the closed end 42a of the output pipe 42 to be connected with a driving mechanism capable of driving the output screw to rotate, the rack 1 is also fixed with a separation box 46, and the rack 1 is also fixed with the separation box 46 in a bolt connection mode; the side of the separation box 46 is provided with an opening, the separation box 46 is hinged with a box door 52 capable of sealing the opening, the output end 42b of the output pipe 42 penetrates through the side wall of the separation box 46 and is positioned in the separation box 46, and the frame 1 is also provided with a dust suction mechanism capable of sucking and removing dust in the separation box 46.

As shown in fig. 1 and 2, the conveying mechanism comprises a conveying shaft 11 and a speed reducing motor 2, the conveying shaft 11 is horizontally arranged in the mounting pipe 6, the conveying shaft 11 is positioned below an air outlet of the air conveying pipe 8, the end part of the conveying shaft 11 is connected with an output shaft of the speed reducing motor 2, the speed reducing motor 2 is fixed on the mounting pipe 6, and the end part of the conveying shaft 11 is connected with the output shaft of the speed reducing motor 2 in a key connection manner; a plurality of conveying blades 12 are fixed on the conveying shaft 11, and four conveying blades 12 are fixed on the conveying shaft 11 in a welding mode.

As shown in fig. 1 and 2, the dredging mechanism includes four air pipes 8, in this embodiment, the air outlets of the air pipes 8 penetrate through the pipe wall of the installation pipe 6 and are located in the installation pipe 6, the end of the air pipes is vertically upward, the air inlets of the air pipes 8 are communicated with an air compressor 20, electromagnetic valves 9 are arranged in the air pipes 8, and a control structure capable of controlling the electromagnetic valves 9 to work is further arranged on the rack 1; the control structure comprises an elastic sheet 15, a travel switch 14 and a first controller 5, wherein one end of the elastic sheet 15 is fixed on the pipe wall of the guide pipe 3, and one end of the elastic sheet 15 is fixed on the pipe wall of the guide pipe 3 in a welding mode; the other end of the elastic sheet 15 is a free end, the travel switch 14 is fixed on the pipe wall of the guide pipe 3 in a bolt connection mode, and the guide cover 13 is further arranged above the travel switch 14, so that materials can be prevented from falling on the travel switch 14; and the travel switch 14 is positioned above the elastic sheet 15, the free end of the elastic sheet 15 can contact with the travel switch 14, and the travel switch 14 and the electromagnetic valve 9 are both connected with the first controller 5.

As shown in fig. 3, the screening mechanism includes a screening plate 31, a vibration motor 32, a discharge pipe 35 and a first suction pump 34, the screening plate 31 is disposed in the decomposition tank 30, the screening plate 31 is located at the upper part of the decomposition tank 30, and a plurality of material passing holes are formed in the screening plate 31, in this embodiment, the number of the material passing holes is five hundred; the vibration motor 32 is fixed on the screening plate 31 through the mounting frame 33, and the screening plate 31 is vibrated through the vibration motor 32, so that blockage of the material passing hole can be avoided; one end of the discharge pipe 35 is communicated with the upper part of the decomposition tank 30, the other end of the discharge pipe 35 is communicated with the collection tank 47, and the first air suction pump 34 is arranged in the discharge pipe 35.

As shown in FIG. 3, the recovery mechanism comprises a recovery pipe 26 and a second suction pump 27, one end of the recovery pipe 26 is communicated with the lower part of the decomposition tank 30, the other end of the recovery pipe 26 is communicated with the storage tank 7, and the second suction pump 27 is arranged in the recovery pipe 26.

As shown in fig. 3, the frame 1 is further provided with a regulating mechanism capable of regulating the flow rate of the first communication pipe 22, the regulating mechanism includes a pressure sensor 23, a first flow regulating valve 21 and a second controller 24, the pressure sensor 23 and the first flow regulating valve 21 are sequentially arranged in the first communication pipe 22, the pressure sensor 23 is located between the first flow regulating valve 21 and the decomposition tank 30, and both the pressure sensor 23 and the first flow regulating valve 21 are connected to the second controller 24, in this embodiment, the second controller 24 is a commercially available single chip microcomputer, the programs of the single chip microcomputer for controlling the sensor and the first flow regulating valve are conventional, and the programs do not need to be edited again; by adopting the structure, the signal is transmitted to the second controller 24 through the pressure sensor 23, and the second controller 24 controls the opening degree of the first flow regulating valve 21, so that the dynamic regulation of the flow of the first communication pipe 22 can be realized, and the regulation and the control are accurate.

As shown in fig. 5 and 6, the positioning member includes a rubber ring 54, the rubber ring 54 is sleeved and fixed on the output end 42b of the output tube 42, the outer side surface of the rubber ring 54 has a plurality of protrusions, in this embodiment, the number of the protrusions is fifty, and the friction between the rubber ring 54 and the material bag can be increased by the protrusions.

As shown in fig. 5 and 6, the dust suction mechanism includes a first fan 53, a third suction pump 44 and a suction pipe 45, the first fan 53 is fixed in the baffle box 46, and the first fan 53 is fixed in the baffle box 46 by means of bolts; the first fan 53 is positioned above the output pipe 42, the air outlet of the first fan 53 faces downwards, one end of the air suction pipe 45 is communicated with the bottom of the separation box 46, the other end of the air suction pipe 45 is communicated with the third air suction pump 44, a filter bag 51 is arranged in the air suction pipe 45, and the filter bag 51 is an existing product which can be bought in the market; the suction pipe 45 is provided with a second flow rate adjustment valve 43, and with this structure, the magnitude of suction force in the suction pipe 45 can be adjusted by the second flow rate adjustment valve 43.

As shown in fig. 5, the driving mechanism includes a motor 49, a driving gear 48 and a driven gear 50, the motor 49 is fixed on the frame 1, and the motor 49 is fixed on the frame 1 by means of bolts; the driving gear 48 is fixed on an output shaft of the motor 49, and the driving gear 48 is fixed on the output shaft of the motor 49 in a key connection mode; the driven gear 50 is fixed on the output screw 40, and the driven gear 50 is fixed on the output screw 40 in a bolt connection mode; the drive gear 48 meshes with a driven gear 50.

As shown in fig. 7, the barrier box 46 is further provided with an observation port, a transparent observation plate 55 is provided at the observation port, the observation plate 55 is a commercially available organic plate, and by adopting the structure, the work abnormality inside the barrier box 46 can be observed through the observation plate 55.

As shown in fig. 8, a cooling mechanism for cooling the air compressor 20 is arranged on the frame 1, the cooling mechanism includes a mounting bracket 64 and a second fan 69, the mounting bracket 64 is arranged on the frame 1, and a damping block 63 is arranged between the mounting bracket 64 and the frame 1, with this structure, the vibration at the mounting bracket 64 can be reduced by the damping block 63, and the use noise is low; the second fan 69 is disposed on the mounting bracket 64 through a moving mechanism capable of driving the second fan to move horizontally, the second fan 69 is located above the air compressor 20, and an air outlet of the second fan 69 faces the air compressor 20.

As shown in fig. 8 and 9, the moving mechanism includes an arc-shaped first guide rail 65, a first slider 75, a mounting plate 68, a servo motor 67 and a gear 66, the first guide rail 65 is fixed on the mounting bracket 64, and the first guide rail 65 is fixed on the mounting bracket 64 by a bolt connection; the inner arc surface of the first guide rail 65 is provided with teeth 65a, the first slide block 75 is arranged in the first guide rail 65, and the first slide block 75 can move along the first guide rail 65; the mounting plate 68 is fixed on the first slide block 75, and the mounting plate 68 is fixed on the first slide block 75 in a bolt connection mode; the servo motor 67 is fixed on the upper surface of the mounting plate 68, and the servo motor 67 is fixed on the upper surface of the mounting plate 68 in a bolt connection mode; an output shaft of the servo motor 67 is vertically downward, the gear 66 is fixed on the output shaft of the servo motor 67, and the gear 66 is fixed on the output shaft of the servo motor 67 in a key connection mode; the gear 66 is engaged with the teeth 65a of the first rail 65, and the second fan 69 is provided on the lower surface of the mounting plate 68 via a lifting mechanism capable of driving the second fan to move up and down.

As shown in fig. 8 and 9, the lifting mechanism includes a push rod motor 71, a second slider 72 and a second guide rail 73, the second guide rail 73 is fixed on the lower surface of the mounting plate 68 through a connecting frame 74, the second slider 72 is disposed in the second guide rail 73, and the second slider 72 can move along the second guide rail 73; the push rod motor 71 is fixed on the lower surface of the mounting plate 68, and the push rod motor 71 is fixed on the lower surface of the mounting plate 68 in a bolt connection mode; the push rod of the push rod motor 71 is vertically downward, the end part of the push rod motor 71 is connected with the second sliding block 72, and the end part of the push rod motor 71 is connected with the second sliding block 72 in a bolt connection mode; the second fan 69 is fixed to the second slider 72, and the second fan 69 is fixed to the second slider 72 by a bolt connection.

As shown in fig. 8, the rack 1 is further provided with a control mechanism capable of controlling the start and stop of the servo motor 67, the control mechanism includes a plurality of temperature sensors 70, a display screen 61 and a third controller 60, in this embodiment, the number of the temperature sensors 70 is four; the temperature sensors 70 are respectively arranged on the air compressor 20, the temperature sensors 70 are uniformly arranged, the display screen 61 is fixed on the frame 1, and the display screen 61 is fixed on the frame 1 in a bolt connection mode; the temperature sensor 70, the display screen 61 and the servo motor 67 are all connected with the third controller 60; in this embodiment, the third controller 60 is a commercially available single chip microcomputer, and the program for controlling the sensor, the motor and the display screen of the single chip microcomputer is available, and the program does not need to be edited again.

The working principle of the jet milling system is as follows: an output shaft of the speed reducing motor 2 is controlled to drive the conveying shaft 11 to rotate, the conveying shaft 11 drives the conveying blades 12 to rotate, the raw materials in the storage tank 7 are conveyed into the guide pipe 3 along with the rotation of the conveying blades 12, and the raw materials enter the material conveying pipe 4 under the action of self gravity, so that the feeding operation of the raw materials is realized; raw materials in the feeding pipe 4 are conveyed into the decomposing tank 30 through the feeding pipe 36, compressed air is conveyed into the decomposing tank 30 through the air supply pipe 28 by the air compressor 20, and the raw materials are impacted at high speed by the air, generate friction with each other and are decomposed into nanoscale powder; starting the first air suction pump 34, enabling the particles meeting the requirements to pass through the material passing holes of the screening plate 31, and conveying the particles into a collecting tank 47 through the discharge pipe 35; the second air suction pump 27 is started, and is conveyed into the material storage tank 7 through the recovery pipe 26 to be decomposed again, so that the decomposition operation is completed; the material bag is sleeved on the output end 42b of the output pipe 42, the material bag is positioned through the elastic force of the rubber ring 54, the output shaft of the control motor 49 drives the driving gear 48 to rotate, the driving gear 48 drives the driven gear 50 to rotate, the driven gear 50 drives the output screw 40 to rotate, along with the rotation of the output screw 40, the nano-scale powder in the collection tank 47 is conveyed into the material bag, the air in the separation box 46 is conveyed downwards through the first fan 53, the dust moves downwards along with the air, the dust in the separation box 46 is sucked out through the third air suction pump 44 and is sucked into the filter bag 51, and therefore the collection operation of the material bag is achieved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The improved zinc stearate manufacturing method is characterized by comprising the following steps:

a. conveying stearic acid in a liquid state into a reaction kettle through a conveying pump for stirring and heating, wherein the stirring time is 24min, and the heating temperature is 130 ℃;

b. adding zinc oxide into a reaction kettle for three times, and reacting at 170 ℃ and 0.21Mpa for 45 min;

c. conveying the reacted zinc stearate to a tablet press for tabletting;

d. coarsely crushing the pressed zinc stearate by a common crusher;

e. finely crushing the coarsely crushed zinc stearate by using an airflow crushing system to prepare zinc stearate;

the jet milling system in the step e comprises a rack, wherein a feeding device, a decomposing device and a collecting device are arranged on the rack, the feeding device comprises a storage tank and a feeding pipe, the storage tank is fixed on the rack, an input port is arranged at the upper end of the storage tank, the lower end of the storage tank is communicated with the pipe wall of the feeding pipe through a guide pipe, an installation pipe is arranged between the storage tank and the guide pipe, the upper end of the installation pipe is communicated with the lower end of the storage tank, the lower end of the installation pipe is communicated with the guide pipe, a conveying mechanism capable of conveying materials in the storage tank to the guide pipe is arranged on the installation pipe, and a dredging mechanism capable of dredging the lower end of the; the decomposing device comprises a decomposing tank, a positioning ring, a plurality of air supply pipes, a feeding pipe and an air compressor, wherein the decomposing tank is arranged on a rack, the positioning ring is arranged in the decomposing tank, the positioning ring is positioned in the middle of the decomposing tank, the air outlet ends of the plurality of air supply pipes penetrate through the side wall of the decomposing tank and are fixed on the positioning ring, the air outlet ends face the center of the positioning ring, the air inlet ends of the air supply pipes are communicated with the air compressor through a first communicating pipe, the discharge ends of the feeding pipes are fixed in the decomposing tank, the discharge ends face the positioning ring, the feed ends of the feeding pipes penetrate through the side wall of the decomposing tank and are communicated with the feeding pipe, the; the collecting device comprises a collecting tank, an output pipe and an output screw rod, the collecting tank is fixed on a rack, the upper end of the collecting tank is provided with an inlet, the inlet of the collecting tank is communicated with the upper part of the decomposition tank, the lower end of the collecting tank is provided with an outlet, the outlet of the collecting tank is communicated with the pipe wall of the output pipe, one end of the output pipe is a closed end, the other end of the output pipe is an output end, a positioning piece for positioning is arranged on the output end, one end of the output screw rod is positioned in the output pipe, the other end of the output screw rod penetrates out of the closed end of the output pipe and is connected with a driving mechanism capable of driving the output screw rod to rotate, a blocking box is also fixed on the rack, the side part of the blocking box is provided with an opening, a box door capable of closing the opening is hinged on the; the dredging mechanism comprises a gas pipe, the gas outlet of the gas pipe penetrates through the pipe wall of the installation pipe and is located in the installation pipe, the gas inlet of the gas pipe is communicated with the air compressor, an electromagnetic valve is arranged in the gas pipe, and a control structure capable of controlling the electromagnetic valve to work is further arranged on the machine frame.

2. The method for preparing improved zinc stearate as claimed in claim 1, wherein the control structure includes an elastic sheet, a travel switch and a first controller, one end of the elastic sheet is fixed on the tube wall of the guide tube, the other end of the elastic sheet is a free end, the travel switch is fixed on the tube wall of the guide tube and is located above the elastic sheet, the free end of the elastic sheet can contact with the travel switch, and the travel switch and the solenoid valve are both connected to the first controller.

3. An improved zinc stearate manufacturing method as claimed in claim 2, wherein said positioning member includes a rubber ring, the rubber ring is sleeved and fixed on the output end of the output pipe, and the outer side of the rubber ring has a plurality of protrusions.

4. The improved zinc stearate manufacturing method according to claim 3, wherein a cooling mechanism for cooling the air compressor is arranged on the rack, the cooling mechanism comprises a mounting bracket and a second fan, the mounting bracket is arranged on the rack, a damping block is arranged between the mounting bracket and the rack, the second fan is arranged on the mounting bracket through a moving mechanism capable of driving the second fan to horizontally move, the second fan is located above the air compressor, and an air outlet of the second fan faces the air compressor.