CN112774590A - Automatic safe production device for sodium persulfate - Google Patents

Automatic safe production device for sodium persulfate Download PDF

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Publication number
CN112774590A
CN112774590A CN202010916155.5A CN202010916155A CN112774590A CN 112774590 A CN112774590 A CN 112774590A CN 202010916155 A CN202010916155 A CN 202010916155A CN 112774590 A CN112774590 A CN 112774590A
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CN
China
Prior art keywords
fixedly connected
temperature control
pipe
control box
ventilation
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Pending
Application number
CN202010916155.5A
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Chinese (zh)
Inventor
魏玉强
张可贵
许建平
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Fujian Minglin Technology Co ltd
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Fujian Minglin Technology Co ltd
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Priority to CN202010916155.5A priority Critical patent/CN112774590A/en
Publication of CN112774590A publication Critical patent/CN112774590A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053Details of the reactor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006Controlling or regulating processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006Controlling or regulating processes
    • B01J19/0013Controlling the temperature of the process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18Stationary reactors having moving elements inside
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/002Component parts of these vessels not mentioned in B01J3/004, B01J3/006, B01J3/02 - B01J3/08; Measures taken in conjunction with the process to be carried out, e.g. safety measures
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/04Pressure vessels, e.g. autoclaves
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/06Peroxyhydrates; Peroxyacids or salts thereof containing sulfur
    • C01B15/08Peroxysulfates

Abstract

The invention relates to the technical field of sodium persulfate production, in particular to an automatic safety production device for sodium persulfate, which comprises a reaction kettle and a feed pipe, wherein the feed pipe is fixedly connected to the right end face of the reaction kettle, the left side of the reaction kettle is fixedly connected with an air release pipe, a temperature sensor and an air inlet pipe which are distributed in an upper, middle and lower manner, the left side of the air release pipe and the left side of the air inlet pipe are fixedly connected with conveying pipes, the outer sides of the conveying pipes are fixedly connected with a temperature control box, the front end face of the temperature control box is fixedly connected with a controller, and the upper end face of the temperature control box; according to the invention, the temperature is detected by the temperature sensor through the electromagnetic valve, the alarm lamp, the controller, the heat exchanger and the air pump, when the temperature reaches a fixed value, a signal is sent to the controller, so that the electromagnetic valve is controlled to be opened to release the pressure, then the heat exchanger is used for carrying out heat exchange work, and then the heat exchanger is discharged into the reaction kettle again, so that the cooling work is realized, and the safety performance is good.

Description

Automatic safe production device for sodium persulfate
Technical Field
The invention relates to the technical field of sodium persulfate production, in particular to an automatic safe production device for sodium persulfate.
Background
Sodium persulfate is also known as sodium persulfate. The appearance is white crystalline powder, odorless, soluble in water, used as a bleaching agent, an oxidant and an emulsion polymerization promoter, the operation care items comprise closed operation and ventilation enhancement, operators need special training and strictly follow operation regulations, and are advised to wear a hood-type electric air supply filter type dustproof respirator, wear a polyethylene gas protection suit, wear rubber gloves, keep away from fire and heat sources, strictly forbid smoking in workplaces, avoid generating dust, avoid contacting with a reducing agent, active metal powder, alkalis and alcohols, slightly load and unload during transportation, prevent packaging and container damage, forbid vibration, impact and friction, prepare corresponding varieties and quantities of fire-fighting equipment and leakage emergency treatment equipment, and the emptied container possibly has residual harmful substances.
Most sodium persulfate that exists on the market at present all need react the preparation through reation kettle in process of production, and its operating temperature is up to 300 degrees sometimes, and is very high to the requirement for quality of equipment, and current reation kettle can't carry out the regulation and control of temperature, influences going on of reaction to some extent, will have certain potential safety hazard under the high temperature high pressure, consequently, proposes a sodium persulfate automated safety production device to above-mentioned problem.
Disclosure of Invention
The invention aims to provide an automatic safe production device for sodium persulfate, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an automatic safe production device for sodium persulfate comprises a reaction kettle and an inlet pipe, wherein the inlet pipe is fixedly connected to the right end face of the reaction kettle, the reaction kettle is fixedly connected with an air escape pipe, a temperature sensor and an inlet pipe which are distributed in an upper, a middle and a lower manner, the left side of the air escape pipe and the left side of the inlet pipe are fixedly connected with a conveying pipe, the outer side of the conveying pipe is fixedly connected with a temperature control box, the front end face of the temperature control box is fixedly connected with a controller, the upper end face of the temperature control box is fixedly connected with an alarm lamp, a lifting device is fixedly connected below the temperature control box, the outer side of the air escape pipe is fixedly connected with an electromagnetic valve, the outer side of the inlet pipe is fixedly connected with a one-way valve, the left side of the conveying pipe is fixedly connected with, the ventilation device is characterized in that the upper end face of the ventilation device is fixedly connected with the temperature control box, the lower end face of the heat exchanger is fixedly connected with a supporting plate, the outer side of the supporting plate is fixedly connected with the temperature control box, an air pump is arranged below the supporting plate, the output end of the air pump is fixedly connected with an output tube, the lower end face of the air pump is fixedly connected with the temperature control box, the input end of the air pump is fixedly connected with an input tube, the other end of the input tube is fixedly connected with the heat exchanger, a filter cover is fixedly connected to the lower side of the left side of the temperature.
Preferably, the water conservancy diversion hole top is hopper-shaped setting, water conservancy diversion hole quantity is 9, and water conservancy diversion hole evenly distributed's temperature control box below.
Preferably, elevating gear includes base and fixed station, the inside fixedly connected with fixed station of base, the fixed station top is equipped with the crane, the equal fixedly connected with pivot in crane lower extreme left and right sides is located left the inside screwed connection of pivot has the threaded rod, is located the right side the pivot outside rotates with the fixed station to be connected, the crane up end rotates and is connected with the slider, slider top and roof sliding connection, roof up end and temperature control box fixed connection, the equal fixedly connected with slide bar in the terminal surface left and right sides under the roof, the equal sliding connection in the slide bar outside has a brace table, brace table outside and base fixed connection.
Preferably, the fixed station right side is equipped with the pipe that inclines, the pipe outside and base fixed connection incline, the water storage chamber has been seted up on the inside right side of base, base right side fixedly connected with drain plug.
Preferably, the right side of the threaded rod is rotationally connected with the fixed station, the left side of the threaded rod is fixedly connected with a handle, and the outer side of the left side of the threaded rod is rotationally connected with the base
Preferably, the upper end surface of the top plate is provided with guide grooves which are uniformly distributed, and the guide grooves are transversely arranged.
Preferably, the ventilation device comprises a ventilation box and a fixed plate, the upper end face of the ventilation box is fixedly connected with the temperature control box, the fixed plate is fixedly connected inside the ventilation box, the right end face of the fixed plate is fixedly connected with a fan, the left end face of the ventilation box is fixedly connected with a ventilation pipe, the outer side of the ventilation pipe is fixedly connected with the temperature control box, and the right side of the lower end face of the ventilation box is fixedly connected with a filter plate.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the electromagnetic valve, the alarm lamp, the controller, the flow guide hole, the heat exchanger, the support plate, the filter cover and the air pump are arranged, the temperature is detected through the temperature sensor, when the temperature reaches a fixed value, a signal is sent to the controller, so that the electromagnetic valve is controlled to be opened to release pressure, then the heat exchange work is carried out through the heat exchanger, and then the heat exchange work is carried out again to the reaction kettle, so that the cooling work is realized, and the safety performance is good;
2. according to the temperature control box, the temperature control box can be moved upwards by rotating the handle through the arranged lifting frame, the sliding block, the top plate, the sliding rod, the supporting table, the rotating shaft, the threaded rod and the handle, so that the temperature control box is convenient to install, water in the temperature control box can flow into the water storage cavity, then centralized collection and treatment are carried out, water sources are prevented from being accumulated in the temperature control box, and the practical service life of equipment is ensured;
3. according to the invention, through the arranged ventilation box, the fixed plate, the fan, the filter plate and the ventilation pipe, in the working process of the heat exchanger, the temperature inside the temperature control box is higher, and the fan is started to drive air to flow, so that the ventilation and heat dissipation effects are realized, the normal use of the heat exchanger is ensured, a good heat dissipation effect is achieved, and the arranged filter cover ensures that external impurities are not easy to enter the temperature control box.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a sectional view of the temperature control box of the present invention;
FIG. 3 is a schematic view of the structure of the ventilating device of the present invention;
FIG. 4 is a schematic view of the lifting device of the present invention;
FIG. 5 is a schematic view of the top plate structure of the present invention.
In the figure: 1-reaction kettle, 2-feeding pipe, 3-temperature sensor, 4-air escape pipe, 5-air inlet pipe, 6-temperature control box, 7-lifting device, 701-base, 702-fixed table, 703-lifting frame, 704-sliding block, 705-top plate, 706-sliding rod, 707-supporting table, 708-rotating shaft, 709-threaded rod, 710-handle, 711-inclined pipe, 712-water storage cavity, 713-drainage plug, 8-ventilation device, 801-ventilation box, 802-fixed plate, 803-blower, 804-filtering plate, 805-ventilation pipe, 9-electromagnetic valve, 10-one-way valve, 11-conveying pipe, 12-alarm lamp, 13-controller, 14-diversion hole, 15-heat exchanger, etc, 16-support plate, 17-input tube, 18-filter cover, 19-air pump, 20-output tube.
Detailed Description
Example 1:
referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution:
an automatic safe production device for sodium persulfate, which comprises a reaction kettle 1 and a feed pipe 2, wherein the feed pipe 2 is fixedly connected with the right end face of the reaction kettle 1, the left side of the reaction kettle 1 is fixedly connected with an air leakage pipe 4 which is distributed up, middle and down, a temperature sensor 3 and an air inlet pipe 5, the left side of the air leakage pipe 4 and the left side of the air inlet pipe 5 are both fixedly connected with a conveying pipe 11, the outer side of the conveying pipe 11 is fixedly connected with a temperature control box 6, the front end face of the temperature control box 6 is fixedly connected with a controller 13, the upper end face of the temperature control box 6 is fixedly connected with an alarm lamp 12, a lifting device 7 is fixedly connected below the temperature control box 6, the outer side of the air leakage pipe 4 is fixedly connected with an electromagnetic valve 9, the outer side of the air inlet pipe 5 is fixedly connected with a one-way valve 10, the left, the ventilation device 8 comprises a ventilation box 801 and a fixing plate 802, the upper end surface of the ventilation box 801 is fixedly connected with the temperature control box 6, the fixing plate 802 is fixedly connected inside the ventilation box 801, the right end surface of the fixing plate 802 is fixedly connected with a fan 803, the left end surface of the ventilation box 801 is fixedly connected with a ventilation pipe 805, the outer side of the ventilation pipe 805 is fixedly connected with the temperature control box 6, the right side of the lower end surface of the ventilation box 801 is fixedly connected with a filter plate 804, the arrangement can realize air flow, thereby realizing heat conduction and cooling, the upper end surface of the ventilation device 8 is fixedly connected with the temperature control box 6, the lower end surface of the heat exchanger 15 is fixedly connected with a support plate 16, the outer side of the support plate 16 is fixedly connected with the temperature control box 6, an air pump 19 is arranged below the support plate 16, the output end of the air pump 19 is fixedly, the other end of the input pipe 17 is fixedly connected with a heat exchanger 15, a filter mantle 18 is fixedly connected below the left side of the temperature control box 6, a flow guide hole 14 is arranged on the lower end face of the temperature control box 6, the upper part of the flow guide hole 14 is arranged in a funnel shape, the number of the flow guide holes 14 is 9, and the flow guide holes 14 are uniformly distributed below the temperature control box 6, the arrangement facilitates the water drops to flow into the lifting device 7 to realize centralized collection work, the lifting device 7 comprises a base 701 and a fixed table 702, the inside of the base 701 is fixedly connected with the fixed table 702, a lifting frame 703 is arranged above the fixed table 702, the left side and the right side of the lower end of the lifting frame 703 are fixedly connected with rotating shafts 708, the inside of the rotating shaft 708 on the left side is spirally connected with a threaded rod 709, the outside of the rotating shaft 708 on the right side is rotatably connected with, the upper part of a sliding block 704 is connected with a top plate 705 in a sliding way, the upper end surface of the top plate 705 is fixedly connected with a temperature control box 6, the left side and the right side of the lower end surface of the top plate 705 are fixedly connected with a sliding rod 706, the outer side of the sliding rod 706 is connected with a supporting platform 707 in a sliding way, the outer side of the supporting platform 707 is fixedly connected with a base 701, the right side of the fixed platform 702 is provided with an inclined pipe 711, the outer side of the inclined pipe 711 is fixedly connected with the base 701, the right side inside the base 701 is provided with a water storage cavity 712, the right side of the base 701 is fixedly connected with a drain plug 713, the drain plug 713 is arranged to facilitate the drainage of the water inside, the right side of a threaded rod 709 is rotatably connected with the fixed platform 702, the left side of the threaded rod 709 is fixedly connected with a handle 710, the handle 710 is rotated to drive the, evenly distributed's guiding gutter has been seted up to roof 705 up end, and the guiding gutter is horizontal setting, and inside this kind of setting realized that water flows into to base 701, concentrated collection work.
The working process is as follows: when the device is used, materials are placed in the reaction kettle 1 through the feeding pipe 2, the temperature rises during use, then the temperature sensor 3 measures the temperature, when the temperature reaches a certain value, the temperature sensor 3 sends a signal to the controller 13 at the moment, the controller 13 controls the alarm lamp 12 to light up to remind people, so that workers have safety precaution consciousness and ensure the life safety of the people, the controller 13 controls the electromagnetic valve 9 to open, then the pressure in the reaction kettle 1 leaks into the temperature control box 6, the heat is led out along with the pressure, the hot air is led into the heat exchanger 15, the heat is exchanged through the heat exchanger 15, then the air pump 19 is started to be drawn out again, then the hot air enters the temperature control box 6 again through the conveying pipe 20, the conveying pipe 11 and the air inlet pipe 5 below the temperature control box 6 to carry out cooling work, the proper temperature is ensured, and the device has good safety performance, the one-way valve 10 is set to ensure that air can only flow in one way, when the heat exchanger 15 is in heat exchange operation, the fan 803 in the ventilation box 801 is started to drive air to flow, then hot air is exhausted through the filter plate 804 through the ventilation pipe 805, the filter cover 18 on the left side of the temperature control box 6 can block external dust from entering the temperature control type 6, when the equipment is assembled, the air leakage pipe 4 and the air inlet pipe 5 are possibly inconsistent with the height of the reaction kettle 1, at the moment, the threaded rod 709 is driven to rotate through rotating the handle 710, so that the rotating shaft 708 on the left side is driven to move rightwards, at the moment, the lifting frame 703 extends upwards to drive the sliding block 704 to slide, so that the top plate 705 is lifted upwards, so that the temperature control box 6 is lifted to facilitate the installation operation, the outer side of the arranged sliding rod 706 is connected with the supporting platform 707 in a sliding manner, so, meanwhile, the support 707 has a supporting function on the top plate 705, and when the heat exchanger 15 works, cold and hot air exchanges heat, water drops are generated, and the water drops flow into the base 701 through the diversion holes 14 and the diversion grooves above the top plate 705 and flow into the water storage cavity 712 through the inclined pipe 711 for collection.
Example 2:
in embodiment 2, the same parts as those in embodiment 1 are not described again, except that when the temperature sensor 3 detects that the temperature in the reaction vessel 1 is at a normal value, it does not send a signal to the controller 13, and at this time, the reaction vessel 1 is still in a closed state, and then the reaction inside is ensured to be normally performed.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims (7)

1. The utility model provides a sodium persulfate automatic safety in production device, includes reation kettle (1) and inlet pipe (2), its characterized in that: the reactor comprises a reaction kettle (1), wherein a right end face of the reaction kettle (1) is fixedly connected with an inlet pipe (2), the left side of the reaction kettle (1) is fixedly connected with an air leakage pipe (4), a temperature sensor (3) and an air inlet pipe (5) which are distributed in an upper, middle and lower mode, the left side of the air leakage pipe (4) and the left side of the air inlet pipe (5) are fixedly connected with a conveying pipe (11), the outer side of the conveying pipe (11) is fixedly connected with a temperature control box (6), the front end face of the temperature control box (6) is fixedly connected with a controller (13), the upper end face of the temperature control box (6) is fixedly connected with an alarm lamp (12), the lower part of the temperature control box (6) is fixedly connected with a lifting device (7), the outer side of the air leakage pipe (4) is fixedly connected with an electromagnetic valve (9), the outer side of the air, an output pipe (20) is fixedly connected to the left side of the conveying pipe (11) positioned at the lower part, a ventilation device (8) is arranged above the heat exchanger (15), the upper end surface of the ventilation device (8) is fixedly connected with the temperature control box (6), a supporting plate (16) is fixedly connected with the lower end surface of the heat exchanger (15), the outer side of the supporting plate (16) is fixedly connected with the temperature control box (6), an air pump (19) is arranged below the supporting plate (16), the output end of the air pump (19) is fixedly connected with an output pipe (20), the lower end surface of the air pump (19) is fixedly connected with the temperature control box (6), the input end of the air pump (19) is fixedly connected with an input pipe (17), the other end of the input pipe (17) is fixedly connected with the heat exchanger (15), a filter cover (18) is fixedly connected to the lower portion of the left side of the temperature control box (6), and a flow guide hole (14) is formed in the lower end face of the temperature control box (6).
2. The automatic safe production device of sodium persulfate according to claim 1, characterized in that: the water conservancy diversion hole (14) top is hopper-shaped setting, water conservancy diversion hole (14) quantity is 9, and water conservancy diversion hole (14) evenly distributed's temperature control box (6) below.
3. The automatic safe production device of sodium persulfate according to claim 1, characterized in that: the lifting device (7) comprises a base (701) and a fixed platform (702), the fixed platform (702) is fixedly connected in the base (701), a lifting frame (703) is arranged above the fixed station (702), the left side and the right side of the lower end of the lifting frame (703) are fixedly connected with a rotating shaft (708), the inner part of the rotating shaft (708) positioned at the left side is spirally connected with a threaded rod (709), the outer side of the rotating shaft (708) positioned at the right side is rotatably connected with the fixed station (702), the upper end surface of the lifting frame (703) is rotationally connected with a sliding block (704), the upper part of the sliding block (704) is connected with a top plate (705) in a sliding way, the upper end surface of the top plate (705) is fixedly connected with a temperature control box (6), the left side and the right side of the lower end surface of the top plate (705) are fixedly connected with sliding rods (706), the outer sides of the sliding rods (706) are connected with supporting tables (707) in a sliding mode, and the outer sides of the supporting tables (707) are fixedly connected with the base (701).
4. The automatic safe production device of sodium persulfate according to claim 3, characterized in that: the water storage device is characterized in that an inclined pipe (711) is arranged on the right side of the fixed table (702), the outer side of the inclined pipe (711) is fixedly connected with the base (701), a water storage cavity (712) is formed in the right side of the interior of the base (701), and a drain plug (713) is fixedly connected to the right side of the base (701).
5. The automatic safe production device of sodium persulfate according to claim 3, characterized in that: threaded rod (709) right side is rotated with fixed station (702) and is connected, threaded rod (709) left side fixedly connected with handle (710), threaded rod (709) left side outside is rotated with base (701) and is connected
6. The automatic safe production device of sodium persulfate according to claim 3, characterized in that: the upper end surface of the top plate (705) is provided with guide grooves which are uniformly distributed and transversely arranged.
7. The automatic safe production device of sodium persulfate according to claim 1, characterized in that: ventilation unit (8) are including ventilation case (801) and fixed plate (802), ventilation case (801) up end and temperature control case (6) fixed connection, the inside fixedly connected with fixed plate (802) of ventilation case (801), fixed plate (802) right-hand member face fixedly connected with fan (803), ventilation case (801) left side terminal surface fixedly connected with ventilation pipe (805), ventilation pipe (805) outside and temperature control case (6) fixed connection, terminal surface right side fixedly connected with filter (804) under ventilation case (801).
CN202010916155.5A 2020-09-08 2020-09-08 Automatic safe production device for sodium persulfate Pending CN112774590A (en)

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