CN115200367A

CN115200367A - Oxygen injection calcining equipment for zinc oxide production

Info

Publication number: CN115200367A
Application number: CN202210882160.8A
Authority: CN
Inventors: 刘艺
Original assignee: Anhui Hanshan Jinhua Zinc Oxide Plant
Current assignee: Anhui Hanshan Jinhua Zinc Oxide Plant
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-10-18

Abstract

The invention relates to the technical field of zinc oxide production, in particular to an oxygen injection calcining device for zinc oxide production, which comprises a zinc oxide calcining furnace, wherein a feeding hole of the zinc oxide calcining furnace is provided with a feeding sealing assembly, a discharging hole at the bottom of the zinc oxide calcining furnace is provided with a discharging sealing assembly, the side wall of the zinc oxide calcining furnace is connected with an oxygen injection preheating assembly through a corrugated pipe compensator, and the other end of the oxygen injection preheating assembly is connected with an air outlet of an oxygen injection air feeder through an air supply pipeline.

Description

Oxygen injection calcining equipment for zinc oxide production

Technical Field

The invention relates to the technical field of zinc oxide production, in particular to oxygen injection calcining equipment for zinc oxide production.

Background

Zinc oxide is an oxide of zinc, poorly soluble in water, soluble in acids and strong bases, is a white solid, also known as zinc white, which can be obtained by burning or roasting zinc concentrate, and has applications as an additive in a variety of materials and products, including plastics, ceramics, glass, cement, lubricants, paints, adhesives, and the like. In the prior art, zinc concentrate is generally adopted for producing zinc oxide, and then is calcined and reduced into zinc which is oxidized into zinc oxide, impurities in air cannot be filtered out in the production process of the zinc concentrate in a calcining furnace, so that the impurities in the air react with the zinc powder, the calcined zinc oxide is reduced in quality, and meanwhile, a feed inlet and a discharge outlet of the conventional calcining furnace are directly contacted with the air, so that the impurities in the air enter the calcining furnace while feeding and discharging materials, the impurities react with the calcined zinc concentrate, and the calcined zinc oxide is also reduced in quality.

In conclusion, the invention solves the existing problems by designing the oxygen injection calcining equipment for producing the zinc oxide.

Disclosure of Invention

The invention aims to provide oxygen injection calcining equipment for producing zinc oxide, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

an oxygen injection calcining device for zinc oxide production comprises a zinc oxide calcining furnace, wherein a feeding sealing assembly is arranged at a feeding port of the zinc oxide calcining furnace, a discharging sealing assembly is arranged at a discharging port at the bottom of the zinc oxide calcining furnace, an oxygen injection preheating assembly is connected to the side wall of the zinc oxide calcining furnace through a corrugated pipe compensator, the other end of the oxygen injection preheating assembly is connected to an air outlet of an oxygen injection blower through an air supply pipeline, an air inlet of the oxygen injection blower is connected with an air filtering assembly through an air conveying pipeline, the other end of the air filtering assembly is connected to an air outlet of a cyclone dust removal assembly, the feeding sealing assembly and the discharging sealing assembly are respectively connected to a vacuum extraction assembly through pipelines, and a pressure release valve, a pressure gauge, a temperature gauge and a controller of the calcining furnace are sequentially arranged on the side wall of the zinc oxide calcining furnace.

As a preferable scheme of the invention, the feeding sealing component comprises a feeding lower electric gate valve fixedly connected to the zinc oxide calcining furnace, wherein the other port of the feeding lower electric gate valve is fixedly connected with a feeding pre-storage cylinder, the feeding pre-storage cylinder is connected with a feeding hopper through a feeding upper electric gate valve, and the feeding lower electric gate valve, the feeding upper electric gate valve and the oxygen injection blower are respectively and electrically connected to the controller through leads.

As a preferable scheme of the invention, the bottom of the zinc oxide calcining furnace is of a conical structure, the discharging sealing assembly comprises an electric screw conveyor fixedly connected to the bottom of the zinc oxide calcining furnace, wherein a feed inlet of the electric screw conveyor and an inner cavity of the zinc oxide calcining furnace are of a communicating structure, a discharge outlet of the electric screw conveyor is connected with a discharging prestoring tank through an upper discharging electric gate valve, the discharging prestoring tank is connected with a discharging hopper through a lower discharging electric gate valve, and the upper discharging electric gate valve, the lower discharging electric gate valve and the electric screw conveyor are respectively and electrically connected to a controller through leads.

As a preferable scheme of the invention, the oxygen injection preheating assembly comprises a preheating box, wherein the left end and the right end of the preheating box are respectively connected to the port of the corrugated pipe compensator and the port of the air supply pipeline through preheating one-way valves, a plurality of groups of heaters are sequentially arranged on a box body of the preheating box from left to right, each heater comprises a drawing handle, a positioning baffle plate and a heating pipe, the drawing handle is arranged on the end surface of the positioning baffle plate, the heating pipe is arranged at the bottom of the positioning baffle plate and inside the preheating box, and the end surface of the positioning baffle plate is connected to the outer wall of the preheating box through two groups of snap locks.

As a preferable scheme of the invention, the heating pipe is of a scale structure, a notch is formed in the preheating box and corresponds to the heater, the heater and the notch in the preheating box form a drawing drawer type structure, the size of the positioning baffle is larger than that of the notch, the joint of the positioning baffle and the notch is sealed by a high-temperature-resistant sealing ring, the heater is electrically connected to the controller through a lead, and the flow direction of the preheating check valve faces to the inner cavity of the zinc oxide calcining furnace.

As a preferable scheme of the invention, the air filtering component comprises an air filtering box, wherein the left end and the right end of the air filtering box are respectively and correspondingly connected to the port of the air conveying pipeline and the air outlet of the cyclone dust removal component through check valves, the one-way flow direction of the check valves faces to the inner cavity of the zinc oxide calcining furnace, a coarse filtering plate, a middle filtering plate and a fine filtering plate are sequentially connected to the side wall of the air filtering box in a plugging manner from right to left, U-shaped handles are correspondingly arranged on the side walls of the coarse filtering plate, the middle filtering plate and the fine filtering plate and positioned outside the air filtering box one by one, and the outer wall of the air filtering box is respectively and correspondingly connected to the frames of the coarse filtering plate, the middle filtering plate and the fine filtering plate through a plurality of groups of locking snap fasteners.

According to the preferable scheme of the invention, the coarse filter plate, the middle filter plate and the fine filter plate are all rectangular frames with the same size, the side walls of the rectangular frames are in clearance fit with the side walls of the inner cavity of the air filter box respectively, the coarse filter plate, the middle filter plate and the fine filter plate are correspondingly inserted into the notches formed in the side walls of the air filter box respectively, air filter cotton is arranged inside the coarse filter plate, the middle filter plate and the fine filter plate respectively, and pores in the air filter cotton are gradually decreased.

As a preferable scheme of the invention, the cyclone dust removal assembly comprises a cyclone dust remover fixedly connected to the check valve, an air inlet channel is connected to an air inlet of the cyclone dust remover, a sewage discharge outlet of the cyclone dust remover is connected with a sewage discharge pipe through a sewage discharge electric gate valve, the sewage discharge pipe is in threaded connection with a detachable dust collection tank, the bottom of the dust collection tank is arranged on a movable tray with a lockable universal wheel, and the cyclone dust remover and the sewage discharge electric gate valve are respectively and electrically connected to the controller through leads.

As a preferable scheme of the invention, the vacuum extraction assembly comprises a vacuum pump, an extraction end of the vacuum pump is respectively connected to a feeding extraction pipe and a discharging extraction pipe through a three-way pipeline, the other end of the feeding extraction pipe is communicated with the feeding prestoring cylinder through a feeding electric valve, the other end of the discharging extraction pipe is communicated with the discharging prestoring tank through a discharging electric valve, and the vacuum pump, the feeding electric valve and the discharging electric valve are respectively and electrically connected to the controller through conducting wires.

As a preferable scheme of the invention, the outer wall of the zinc oxide calcining furnace is wrapped with an insulating layer, and the collection of the pressure release valve, the pressure gauge and the thermometer is respectively communicated with the inner cavity of the zinc oxide calcining furnace.

According to the invention, the cyclone dust removal component and the air filtering component are designed at the oxygen injection port of the zinc oxide calcining furnace, so that impurities contained in the air are filtered layer by layer, and the cleanliness of the air is effectively ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view showing a part of a zinc oxide calciner according to the present invention;

FIG. 3 is a schematic view of a portion of the structure of FIG. 1 in accordance with the present invention;

FIG. 4 is a schematic view of the vacuum pumping assembly of the present invention;

FIG. 5 is a schematic view of the structure of the oxygen injection preheating assembly of the present invention;

FIG. 6 is a schematic view of a portion of the structure of FIG. 5 in accordance with the present invention;

FIG. 7 is a schematic view of an air filter assembly according to the present invention;

FIG. 8 is a schematic view of a portion of the structure of FIG. 7 according to the present invention.

In the figure: 1. a zinc oxide calciner; 2. a feed seal assembly; 3. a discharge seal assembly; 4. a bellows compensator; 5. an oxygen injection preheating assembly; 6. an air supply duct; 7. an oxygen injection blower; 8. an air delivery conduit; 9. an air filtration assembly; 10. a cyclone dust removal assembly; 11. a vacuum extraction assembly; 12. a pressure relief valve; 13. a pressure gauge; 14. a temperature meter; 15. a controller; 201. feeding a lower electric gate valve; 202. feeding a pre-storing cylinder; 203. feeding an electric gate valve; 204. a feed hopper; 301. an electric screw conveyor; 302. discharging the materials by using an electric gate valve; 303. a discharging prestoring tank; 304. discharging and placing an electric gate valve; 305. a discharging funnel; 501. a preheating box; 502. preheating a one-way valve; 503. a heater; 504. a pull handle; 505. positioning a baffle plate; 506. heating a tube; 507. a primary lock catch and a secondary lock catch; 901. an air filtration tank; 902. a check valve; 903. a coarse-stage filter plate; 904. a middle stage filter plate; 905. a fine filter plate; 906. a U-shaped handle; 907. locking the snap fastener; 101. a cyclone dust collector; 102. an air inlet channel; 103. a blowdown electric gate valve; 104. a blow-off pipe; 105. a dust collection tank; 106. moving the tray; 111. a vacuum pump; 112. a feed draw tube; 113. a discharge extraction pipe; 114. a feeding electric valve; 115. and a discharge electric valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

While several embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in order to facilitate an understanding of the invention, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed to provide a more complete disclosure of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, as the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the use of the terms herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to be limiting of the invention, and the use of the term "and/or" herein includes any and all combinations of one or more of the associated listed items.

In an embodiment, referring to fig. 1-8, the present invention provides a technical solution:

the utility model provides an oxygen injection calcining equipment for zinc oxide production, including zinc oxide calcining furnace 1, the feed inlet of zinc oxide calcining furnace 1 is provided with feeding seal assembly 2, wherein the discharge gate of zinc oxide calcining furnace 1 bottom is provided with ejection of compact seal assembly 3, be connected with oxygen injection preheating assembly 5 on the lateral wall of zinc oxide calcining furnace 1 through bellows compensator 4, wherein the other end of oxygen injection preheating assembly 5 connects the air outlet at oxygen injection forced draught blower 7 through the pipeline 6 of supplying gas, the air intake of oxygen injection forced draught blower 7 is connected with air filtering component 9 through air conveying pipeline 8, wherein the air outlet at cyclone dust removal component 10 is connected to the other end of air filtering component 9, feeding seal assembly 2, ejection of compact seal assembly 3 is last to connect respectively on vacuum extraction component 11 through the pipeline, pressure relief valve 12, manometer 13, thermometer 14 and controller 15 have set gradually on the lateral wall of zinc oxide calcining furnace 1.

Referring to fig. 1 and 2, the outer wall of the zinc oxide calcining furnace 1 is wrapped by a heat insulation layer to achieve a heat insulation effect, the collection of the pressure release valve 12, the pressure gauge 13 and the thermometer 14 are respectively communicated with the inner cavity of the zinc oxide calcining furnace 1, the pressure release valve 12 is used for releasing pressure, so that the pressure inside the zinc oxide calcining furnace 1 is ensured, the pressure gauge 13 detects the pressure value inside the zinc oxide calcining furnace 1, and the thermometer 14 detects the temperature value of the zinc oxide calcining furnace 1.

In this embodiment, referring to fig. 2, the feeding sealing assembly 2 includes a feeding lower electric gate valve 201 fixedly connected to the zinc oxide calciner 1, wherein another port of the feeding lower electric gate valve 201 is fixedly connected with a feeding pre-storage barrel 202, the feeding pre-storage barrel 202 is connected with a feeding funnel 204 through a feeding upper electric gate valve 203, wherein the feeding lower electric gate valve 201, the feeding upper electric gate valve 203, and the oxygen injection blower 7 are respectively electrically connected to the controller 15 through wires, the operation controller 15 opens or closes the corresponding feeding upper electric gate valve 203, closes the feeding lower electric gate valve 201, thereby feeding the raw material to be calcined into the feeding pre-storage barrel 202 through the feeding funnel 204, after the addition of the raw material is completed, the feeding upper electric gate valve 203 is controlled to be closed, and opens the feeding lower electric gate valve 201, thereby feeding the raw material in the feeding pre-storage barrel 202 into the zinc oxide calciner 1.

In this embodiment, referring to fig. 2, the bottom of the zinc oxide calcining furnace 1 is a conical structure, discharging is convenient, the discharging sealing component 3 includes an electric screw conveyor 301 fixedly connected to the bottom of the zinc oxide calcining furnace 1, wherein a feed inlet of the electric screw conveyor 301 and an inner cavity of the zinc oxide calcining furnace 1 are in a communicating structure, a discharge outlet of the electric screw conveyor 301 is connected with a discharging pre-storage tank 303 through an electric gate valve 302 on discharging, wherein the discharging pre-storage tank 303 is connected with a discharging hopper 305 through an electric gate valve 304 under discharging, the electric gate valve 302 on discharging, the electric gate valve 304 under discharging and the electric screw conveyor 301 are respectively electrically connected on the controller 15 through wires, the operation controller 15 closes or opens the corresponding electric gate valve 302 on discharging and the electric gate valve 304 under discharging, switches between a closed or open state at two end ports of the discharging pre-storage tank 303, i.e., opens the electric gate valve 302 on discharging, starts the electric screw conveyor 301, screw conveys zinc oxide obtained after the zinc oxide calcining inside of the zinc oxide calcining furnace 1 to the inside of the pre-storage tank 303, after the zinc oxide pre-storage tank is pre-stored, the zinc oxide storage tank 303 is closed, the electric gate valve 302 is opened, thereby discharging the discharging hopper 305 is carried out through the discharging hopper 304 under discharging.

In this embodiment, referring to fig. 1, fig. 2, fig. 5 and fig. 6, the oxygen injection preheating assembly 5 includes a preheating box 501, wherein the left and right ends of the preheating box 501 are respectively connected to the port of the bellows compensator 4 and the port of the air supply duct 6 through preheating check valves 502, a plurality of sets of heaters 503 are sequentially arranged on the box body of the preheating box 501 from left to right, wherein the heaters 503 are composed of a drawing handle 504, a positioning baffle 505 and heating pipes 506, the drawing handle 504 is arranged on the end surface of the positioning baffle 505, the heating pipes 506 are arranged at the bottom of the positioning baffle 505 and inside the preheating box 501, the end surface of the positioning baffle 505 is connected to the outer wall of the preheating box 501 through two sets of snap fasteners 507, which facilitates to remove the heaters 503 and clean the heaters 503, so as to ensure the highest heating efficiency of the passing air, the gas fed by the oxygen injection blower 7 is preheated by the heating pipes 506 on the heaters 503 through the inside of the preheating box 501, and then the preheated gas is fed into the inside of the zinc oxide calciner 1, thereby saving the time of the internal oxidation reaction;

the heating pipe 506 is of a scale structure, the heat exchange area is greatly increased, notches are formed in the preheating box 501 and correspond to the heater 503, the heater 503 and the notches in the preheating box 501 form a drawing drawer type structure, the size of the positioning baffle 505 is larger than that of the notches, the connection position of the positioning baffle 505 and the notches is sealed through a high-temperature-resistant sealing ring, the heater 503 is electrically connected to the controller 15 through a lead, and the flow direction of the preheating check valve 502 faces towards the inner cavity of the zinc oxide calcining furnace 1, so that gas backflow is avoided.

Referring to fig. 3, 7 and 8, the air filtering assembly 9 includes an air filtering box 901, wherein the left and right ends of the air filtering box 901 are correspondingly connected to the port of the air conveying pipeline 8 and the air outlet of the cyclone dust removing assembly 10 through check valves 902, respectively, the one-way flow direction of the check valves 902 faces to the inner cavity of the zinc oxide calcining furnace 1, the side wall of the air filtering box 901 is sequentially connected with a coarse-stage filter plate 903, a middle-stage filter plate 904 and a fine filter plate 905 in a plug-in manner from right to left, U-shaped handles 906 are correspondingly arranged on the side walls of the coarse-stage filter plate 903, the middle-stage filter plate 904 and the fine filter plate 905 and outside the air filtering box 901, and the outer wall of the air filtering box 901 is correspondingly connected to the frames of the coarse-stage filter plate 903, the middle-stage filter plate 904 and the fine filter plate 905 through a plurality of locking snap fasteners 907, respectively, so as to be disassembled and cleaned, thereby ensuring the filtration of the air.

Coarse filter 903, middle-level filter 904 and meticulous filter 905 are the same rectangular frame of size, wherein rectangular frame's lateral wall respectively with the air filter case 901 between the lateral wall the cooperation mode be clearance fit, coarse filter 903, middle-level filter 904 and meticulous filter 905 correspond respectively inside the notch that the plug was seted up at air filter case 901 lateral wall, coarse filter 903, the inside of middle-level filter 904 and meticulous filter 905 all is provided with the filtration cotton, wherein the hole in the filtration cotton is steadilyd decrease in proper order, the inside of being sent into air filter case 901 filters layer upon layer, thereby it goes miscellaneous to reach the secondary air.

In this embodiment, referring to fig. 3, the cyclone assembly 10 includes a cyclone 101 fixedly connected to the check valve 902, an air inlet of the cyclone 101 is connected with an air inlet passage 102, a drain outlet of the cyclone 101 is connected with a drain 104 through a drain electric gate valve 103, wherein the drain 104 is in threaded connection with a detachable dust collection tank 105, which is convenient to disassemble and assemble the dust collection tank 105, the bottom of the dust collection tank 105 is arranged on a movable tray 106 with a lockable universal wheel, which is convenient to move, the cyclone 101, the drain electric gate valve 103 are respectively electrically connected to the controller 15 through a wire, the operation controller 15 starts the cyclone 101, the air in the air is sucked into the air through the air inlet passage 102, so that the air is firstly removed through the principle of the cyclone 101, the air treated by the cyclone 101 is fed into the air filtering assembly 9 through an air outlet of the cyclone 101, and the removed dust is controlled to open the drain electric gate valve 103, the generated precipitate is discharged through the drain 104, and the dust is collected and stored in the dust collection tank 105.

In this embodiment, referring to fig. 2 and fig. 4, the vacuum pumping assembly 11 includes a vacuum pump 111, the pumping end of the vacuum pump 111 is connected to the feeding pumping pipe 112 through a three-way pipe respectively, the discharging pumping pipe 113, the other end of the feeding pumping pipe 112 is communicated to the feeding prestoring cylinder 202 through the feeding electric valve 114, the other end of the discharging pumping pipe 113 is communicated to the discharging prestoring cylinder 303 through the discharging electric valve 115, wherein the vacuum pump 111, the feeding electric valve 114, the discharging electric valve 115 is electrically connected to the controller 15 through a conducting wire respectively, through controlling the feeding electric valve 114, the discharging electric valve 115 is opened or closed, mutually cooperate with the vacuum pump 111 to pump out the gas inside the feeding prestoring cylinder 202 and the inside of the discharging prestoring cylinder 303, and ensure that the feeding and the discharging are in a vacuum state.

The working process of the invention is as follows: the equipment is electrified under the condition that the feeding lower electric gate valve 201, the feeding upper electric gate valve 203, the oxygen injection blower 7, the feeding upper electric gate valve 302, the discharging lower electric gate valve 304, the electric screw conveyor 301, the heater 503, the cyclone dust collector 101 and the pollution discharge electric gate valve 103 are respectively and electrically connected to the controller 15 through leads.

When oxygen needs to be injected into the zinc oxide calcining furnace 1, the operation controller 15 starts the cyclone dust collector 101, the oxygen injection blower 7 and the heater 503, so that the air in the air is sucked into the place through the air inlet channel 102, air impurity removal is carried out for the first time by utilizing the dust removing principle of the cyclone dust collector 101, the air treated by the cyclone dust collector 101 is sent into the air filtering component 9 through the air outlet of the cyclone dust collector 101, at the moment, air filtering cotton is arranged inside the coarse filtering plate 903, the middle filtering plate 904 and the fine filtering plate 905, the air filtering cotton is sent into the air filtering box 901 to be filtered layer by layer under the action of sequentially decreasing the pores in the air filtering cotton, so that secondary air impurity removal is achieved, meanwhile, the oxygen injection blower 7 extracts the secondary air filtered by the air filtering component 9 through the air conveying pipeline 8 and sends the secondary air into the oxygen injection preheating component 5 through the air conveying pipeline 6, at the moment, the gas sent by the oxygen injection blower 7 is preheated by the heating pipe 506 on the heater 503 through the inside of the preheating box 501, at the moment, the preheated gas is sent into the zinc oxide calcining furnace 1 to be subjected to oxidation reaction with the zinc concentrate calcined in the zinc oxide calcining furnace 1, and in the process, the cyclone dust removal component 10 and the air filtering component 9 are designed through the oxygen injection port of the zinc oxide calcining furnace 1, so that the impurities in the air are filtered layer by layer, the cleanliness of the air is effectively ensured, the problem that the impurities in the air cannot be filtered in the production process of the zinc concentrate in the calcining furnace is effectively solved, the reaction between the impurities in the air and the zinc powder is avoided, the quality of the calcined zinc oxide is ensured, and meanwhile, the oxygen injection preheating component 5 arranged at the oxygen injection port can preheat the passing air, the calcining time of the air entering the calcining furnace is saved, and the working efficiency is improved.

When the zinc oxide calcining furnace 1 needs to be charged, the operation controller 15 opens the feeding upper electric gate valve 203 and closes the feeding lower electric gate valve 201, so that the raw material to be calcined is fed into the feeding prestore cylinder 202 through the feeding hopper 204, after the raw material is charged, the feeding upper electric gate valve 203 is controlled to be closed, at the moment, the operation controller 15 opens the feeding electric valve 114, the discharging electric valve 115 is closed, the vacuum pump 111 is started, the gas in the feeding prestore cylinder 202 is pumped out by the vacuum pump 111, after the gas in the feeding prestore cylinder 202 is pumped out, the feeding lower electric gate valve 201 is opened, so that the raw material in the feeding prestore cylinder 202 is fed into the zinc oxide calcining furnace 1, the steps are circularly operated, continuous feeding is realized, the process is realized by arranging the feeding sealing component 2 at the port of the zinc oxide calcining furnace 1 and is matched with the vacuum pumping component 11, so that the raw material can be in a vacuum charging state in the charging process, and impurities in the air can be effectively avoided from entering the calcining furnace, and the quality of the calcined zinc oxide is influenced.

When the zinc oxide calcining furnace 1 needs to be charged, the operation controller 15 closes the electric gate valve 302 on the discharging material and the electric gate valve 304 under the feeding discharging material, the electric gate valve 115 on the discharging material is opened, the electric gate valve 114 on the feeding material is closed, the vacuum pump 111 is used for pumping out the gas inside the discharging pre-storage tank 303, after the gas inside the discharging pre-storage tank 303 is pumped out, the electric gate valve 302 on the discharging material is opened, the electric screw conveyor 301 is started, the zinc oxide obtained after the internal calcining of the zinc oxide calcining furnace 1 is spirally conveyed to the inside of the discharging pre-storage tank 303, after the internal zinc oxide storage of the discharging pre-storage tank 303 is completed, the electric gate valve 302 on the discharging material is closed, the electric gate valve 304 under the feeding discharging material is opened, so as to carry out the discharging through the discharging hopper 305, the above steps are operated circularly, the continuous discharging is realized, the discharging sealing component 3 is arranged at the discharging opening of the zinc oxide calcining furnace 1 in the process and is matched with the vacuum pumping component 11, so that the zinc oxide is in the vacuum state in the discharging process, and the vacuum in the discharging process, impurities in the air are effectively avoided, and the calcining furnace, and the quality of the zinc oxide is influenced by the discharging.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An oxygen injection calcining equipment for zinc oxide production comprises a zinc oxide calcining furnace (1), and is characterized in that: the device is characterized in that a feeding sealing component (2) is arranged at a feeding hole of the zinc oxide calcining furnace (1), a discharging hole at the bottom of the zinc oxide calcining furnace (1) is provided with a discharging sealing component (3), the side wall of the zinc oxide calcining furnace (1) is connected with an oxygen injection preheating component (5) through a corrugated pipe compensator (4), the other end of the oxygen injection preheating component (5) is connected with an air outlet of an oxygen injection air blower (7) through an air supply pipeline (6), an air inlet of the oxygen injection air blower (7) is connected with an air filtering component (9) through an air conveying pipeline (8), the other end of the air filtering component (9) is connected with an air outlet of a cyclone dust removal component (10), the feeding sealing component (2) and the discharging sealing component (3) are respectively connected onto a vacuum extraction component (11) through pipelines, and a pressure release valve (12), a pressure gauge (13), a thermometer (14) and a controller (15) are sequentially arranged on the side wall of the zinc oxide calcining furnace (1).

2. The oxygen injection calcining apparatus for zinc oxide production according to claim 1, characterized in that: the feeding sealing assembly (2) comprises a feeding lower electric gate valve (201) fixedly connected to the zinc oxide calcining furnace (1), wherein the other port of the feeding lower electric gate valve (201) is fixedly connected with a feeding prestorage cylinder (202), the feeding prestorage cylinder (202) is connected with a feeding hopper (204) through a feeding upper electric gate valve (203), and the feeding lower electric gate valve (201), the feeding upper electric gate valve (203) and the oxygen injection blower (7) are respectively and electrically connected to the controller (15) through leads.

3. The oxygen injection calcining device for producing zinc oxide according to claim 2, characterized in that: the bottom of the zinc oxide calcining furnace (1) is of a conical structure, the discharging sealing component (3) comprises an electric screw conveyor (301) fixedly connected to the bottom of the zinc oxide calcining furnace (1), wherein a feeding hole of the electric screw conveyor (301) is communicated with an inner cavity of the zinc oxide calcining furnace (1), a discharging hole of the electric screw conveyor (301) is connected with a discharging pre-storage tank (303) through an electric gate valve (302) on discharging, the discharging pre-storage tank (303) is connected with a discharging hopper (305) through the electric gate valve (304) under discharging, and the electric gate valve (302), the electric gate valve (304) and the electric screw conveyor (301) under discharging are respectively electrically connected to a controller (15) through wires.

4. The oxygen injection calcining apparatus for zinc oxide production according to claim 1, characterized in that: the oxygen injection preheating assembly (5) comprises a preheating box (501), wherein the left end and the right end of the preheating box (501) are connected to a port of the corrugated pipe compensator (4) and a port of the air supply pipeline (6) through preheating check valves (502) respectively, a plurality of groups of heaters (503) are sequentially arranged on a box body of the preheating box (501) from left to right, the heaters (503) comprise drawing handles (504), positioning baffles (505) and heating pipes (506), the drawing handles (504) are arranged on the end faces of the positioning baffles (505), the heating pipes (506) are arranged at the bottoms of the positioning baffles (505) and inside the preheating box (501), and the end faces of the positioning baffles (505) are connected to the outer wall of the preheating box (501) through two groups of primary and secondary lock catches (507).

5. The oxygen injection calcining apparatus for zinc oxide production according to claim 4, characterized in that: the heating pipe (506) is of a scale structure, a notch is formed in the preheating box (501) and corresponds to the heater (503), a drawing drawer type structure is formed by the heater (503) and the notch in the preheating box (501), the size of the positioning baffle (505) is larger than that of the notch, the connection position of the positioning baffle (505) and the notch is sealed through a high-temperature-resistant sealing ring, the heater (503) is electrically connected to the controller (15) through a lead, and the flow direction of the preheating check valve (502) faces towards the inner cavity of the zinc oxide calcining furnace (1).

6. The oxygen injection calcining device for producing zinc oxide according to claim 1, characterized in that: the air filtering component (9) comprises an air filtering box (901), wherein the left end and the right end of the air filtering box (901) are correspondingly connected to a port of an air conveying pipeline (8) and an air outlet of the cyclone dust removal component (10) through check valves (902) respectively, the one-way flow direction of the check valves (902) faces to an inner cavity of the zinc oxide calcining furnace (1), a coarse filtering plate (903), a middle filtering plate (904) and a fine filtering plate (905) are sequentially connected to the side wall of the air filtering box (901) in a plugging mode from right to left, U-shaped handles (906) are correspondingly arranged on the side walls of the coarse filtering plate (903), the middle filtering plate (904) and the fine filtering plate (905) and located outside the air filtering box (901), and the U-shaped handles (906) are correspondingly connected to the frames of the coarse filtering plate (903), the middle filtering plate (904) and the fine filtering plate (905) through a plurality of groups of locking snap fasteners (907) respectively on the outer wall of the air filtering box (901).

7. The oxygen injection calcining apparatus for zinc oxide production according to claim 6, characterized in that: coarse filter (903), middle-level filter (904) and meticulous filter (905) are the same rectangular frame of size, and wherein the lateral wall of rectangular frame respectively with air filter case (901) the lateral wall between the cooperation mode be clearance fit, coarse filter (903), middle-level filter (904) and meticulous filter (905) correspond the plug respectively inside the notch that air filter case (901) lateral wall was seted up, the inside of coarse filter (903), middle-level filter (904) and meticulous filter (905) all is provided with the filtration cotton, and wherein the hole in the filtration cotton descends in proper order.

8. The oxygen injection calcining device for producing zinc oxide according to claim 6, characterized in that: cyclone subassembly (10) is including cyclone (101) of fixed connection on check valve (902), the air intake connection of cyclone (101) has inlet air channel (102), the drain of cyclone (101) is connected with blow off pipe (104) through blowdown electric gate valve (103), and wherein blow off pipe (104) threaded connection has dismantled and assembled dust collection tank (105), the bottom setting of dust collection tank (105) is on removal tray (106) that have the lockable universal wheel, cyclone (101), blowdown electric gate valve (103) are respectively through wire electric connection on controller (15).

9. The oxygen injection calcining apparatus for zinc oxide production according to claim 3, characterized in that: the vacuum extraction assembly (11) comprises a vacuum pump (111), the extraction end of the vacuum pump (111) is respectively connected to an inlet extraction pipe (112) and an outlet extraction pipe (113) through a three-way pipeline, the other end of the inlet extraction pipe (112) is communicated with an inlet pre-storage barrel (202) through an inlet electric valve (114), the other end of the outlet extraction pipe (113) is communicated with an outlet pre-storage tank (303) through an outlet electric valve (115), and the vacuum pump (111), the inlet electric valve (114) and the outlet electric valve (115) are respectively electrically connected to a controller (15) through conducting wires.

10. The oxygen injection calcining device for producing zinc oxide according to claim 1, characterized in that: the outer wall of the zinc oxide calcining furnace (1) is wrapped by a heat insulation layer, and the collection of the pressure release valve (12), the pressure gauge (13) and the thermometer (14) is respectively communicated with the inner cavity of the zinc oxide calcining furnace (1).