阅读说明：本技术 一种磷酸二氢钙的生产工艺及设备 (Production process and equipment of monocalcium phosphate ) 是由 卞其华 杨威 周洺阳 舒峰 于 2021-09-29 设计创作，主要内容包括：本发明公开了一种磷酸二氢钙的生产工艺,包括基座,所述基座上分别设置有反应机构、烘干机构以及粉碎筛分机构,其中,所述反应机构包括反应罐和搅拌组件,所述反应罐通过支架固定设置在所述基座的上方,所述反应罐的顶部固定连接有顶盖,所述顶盖的顶部设置有送料口,所述反应罐的底部连通有下料管,所述下料管上设置有阀门,通过设置搅拌组件配合温控组件,使得磷酸与磷酸氢钙粉反应的向正反应方向进行,使得磷酸与磷酸氢钙粉反应更加彻底,不仅提高了反应效率,同时降低原材料的消耗,降低生产成本,通过反应机构、烘干机构配合粉碎筛分机构,实现了一体化生产,人工参与度低,降低人力消耗的同时,提高了生产效率。(The invention discloses a production process of monocalcium phosphate, which comprises a base, wherein a reaction mechanism, a drying mechanism and a crushing and screening mechanism are respectively arranged on the base, the reaction mechanism comprises a reaction tank and a stirring component, the reaction tank is fixedly arranged above the base through a bracket, the top of the reaction tank is fixedly connected with a top cover, the top of the top cover is provided with a feeding port, the bottom of the reaction tank is communicated with a discharging pipe, the discharging pipe is provided with a valve, the reaction of phosphoric acid and calcium hydrogen phosphate powder is carried out in the forward and reverse reaction directions by arranging the stirring component and matching with a temperature control component, so that the reaction of phosphoric acid and calcium hydrogen phosphate powder is more thorough, the reaction efficiency is improved, the consumption of raw materials is reduced, the production cost is reduced, and the integrated production is realized by matching the reaction mechanism and the drying mechanism with the crushing and screening mechanism, the artificial participation degree is low, and the production efficiency is improved while the manpower consumption is reduced.)

1. A production process of monocalcium phosphate is characterized in that: the production equipment is adopted for production, and the method specifically comprises the following steps:

s1, putting concentrated phosphoric acid and calcium hydrophosphate into a reaction mechanism (200) in calcium dihydrogen phosphate production equipment for mixing reaction, wherein the mass ratio P/Ca of the concentrated phosphoric acid to the calcium hydrophosphate is 3.5-4;

s2, drying the wet material after the reaction in the step S1 by a drying mechanism (300) to obtain a semi-finished product of monocalcium phosphate;

s3, guiding the semi-finished monocalcium phosphate prepared in the step S2 into a crushing and screening mechanism (400) for crushing and screening, wherein the powder collected after screening is finished monocalcium phosphate, and the powder which is not screened is collected by a collecting box (407) in the crushing and screening mechanism (400) and then is crushed again;

and S4, cooling the crushed finished monocalcium phosphate to room temperature, and then weighing, packaging and warehousing.

2. The process for producing monocalcium phosphate according to claim 1, wherein: in step S1, calcium hydrogen phosphate is sieved through a 400 mesh sieve before the concentrated phosphoric acid reacts with the calcium hydrogen phosphate.

3. The process for producing monocalcium phosphate according to claim 1, wherein: in the step S1, the reaction temperature is 55-65 ℃, and the reaction time is 50-80 min.

4. A production facility of monocalcium phosphate of claim 1, characterized in that: the device comprises a base (100), wherein a reaction mechanism (200), a drying mechanism (300) and a crushing and screening mechanism (400) are respectively arranged on the base (100);

the reaction mechanism (200) comprises a reaction tank (201) and a stirring assembly, the reaction tank (201) is fixedly arranged above the base (100) through a support (101), the top of the reaction tank (201) is fixedly connected with a top cover (202), the top of the top cover (202) is provided with a feeding opening (204), the bottom of the reaction tank (201) is communicated with a discharging pipe (211), and a valve (212) is arranged on the discharging pipe (211);

the stirring subassembly includes driving motor (203) and dwang one (216), dwang one (216) is rotated and is set up the inside of retort (201), driving motor (203) fixed mounting be in the top of top cap (202), the bottom fixedly connected with gear box (218) of top cap (202), the upper end of dwang one (216) is rotated in proper order and is run through gear box (218) with top cap (202) pass through the shaft coupling with the pivot fixed connection of driving motor (203), be located the inside of gear box (218) the upper end fixedly connected with driving gear (219) of dwang one (216), be located the both sides of driving gear (219) the inside of gear box (218) is rotated and is provided with two driven gear (220), driven gear (220) with driving gear (219) mesh mutually, the bottom fixedly connected with dwang two (214) of driven gear (220), the lower end of the first rotating rod (216) is fixedly connected with a first helical blade (215), and the lower end of the second rotating rod (214) is fixedly connected with a second helical blade (213);

the drying mechanism (300) comprises a spray dryer (301), the spray dryer (301) is fixedly installed at the top of the base (100) through supporting legs (302), a feeding pump (209) is fixedly installed at the top of the base (100), a feeding hole of the feeding pump (209) is communicated with the lower end of the discharging pipe (211) through a first connecting pipe (208), and a discharging hole of the feeding pump (209) is communicated with a feeding hole of the spray dryer (301) through a second connecting pipe (210);

the crushing and screening mechanism (400) comprises crushing boxes (401), the crushing boxes (401) are arranged at the top of the base (100), crushing rollers (404) are symmetrically and rotatably arranged at the upper end of the inside of the crushing boxes (401), a crushing motor (405) is fixedly installed on one side of each crushing box (401) through an installation seat (406), a rotating shaft of one crushing roller (404) rotatably penetrates through one side of each crushing box (401) and is fixedly connected with a rotating shaft of the corresponding crushing motor (405), a main gear (414) is fixedly connected onto the rotating shaft of each crushing motor (405), a rotating shaft of the other crushing roller (404) rotatably penetrates through one side of each crushing box (401), an end of the other crushing roller (405) is fixedly connected with a driven gear (413), and the main gear (414) is meshed with the driven gear (413);

a sieve plate (408) is arranged inside the crushing box (401) below the crushing rollers (404), and two opposite side surfaces of the sieve plate (408) are connected with the inner wall of the crushing box (401) through limiting springs (409);

the top fixed mounting of base (100) has transfer pump (501), the discharge gate of spray dryer (301) pass through inlet pipe (502) with the feed inlet of transfer pump (501) links to each other, the discharge gate of transfer pump (501) pass through discharging pipe (503) with smash the inside intercommunication in top of case (401).

5. The production facility of monocalcium phosphate according to claim 4, characterized in that: be provided with the temperature control assembly on retort (201), the temperature control assembly includes cold machine of oil (205), the inside of retort (201) is provided with oil circuit (221), is located the upper end fixedly connected with of retort (201) with oil feed nozzle (222) that oil circuit (221) oil inlet is linked together are located the lower extreme fixedly connected with of retort (201) with oil feed nozzle (223) that oil circuit (221) oil-out is linked together, cold machine of oil (205) fixed mounting be in the top of support (101), the oil inlet of cold machine of oil (205) through go out oil pipe (207) with go out oil nozzle (223) and be linked together, the oil-out of cold machine of oil (205) through advancing oil pipe (206) with advance oil nozzle (222) and be linked together.

6. The production facility of monocalcium phosphate according to claim 5, characterized in that: and an ultrasonic wave energy conversion plate (410) is fixedly arranged on one side of the sieve plate (408).

7. The production facility of monocalcium phosphate according to claim 4, characterized in that: one side fixedly connected with collecting box (407) of smashing case (401), through-hole (411) have been seted up to the one side lower extreme of smashing case (401), sieve (408) set up for the slope, the one end of sieve (408) is run through-hole (411) stretch into the inside of collecting box (407), the top of smashing case (401) is provided with feeder hopper (402), the top of feeder hopper (402) is provided with closing cap (403).

8. The production facility of monocalcium phosphate according to claim 6, characterized in that: the top of base (100) is provided with control box (102), the inside fixed mounting of control box (102) has the PLC controller, the bottom fixed mounting of top cap (202) has temperature sensor (224), temperature sensor (224) with the input electric connection of PLC controller, the surface mosaic of control box (102) installs display screen (103), display screen (103) with the output electric connection of PLC controller.

9. The production facility of monocalcium phosphate according to claim 7, characterized in that: door plates (415) are arranged on one side of the crushing box (401) and one side of the collecting box (407).

10. The production facility of monocalcium phosphate according to claim 8, characterized in that: the crushing motor (405), the driving motor (203), the feeding pump (209), the transmission pump (501) and the valve (212) are all controlled by the PLC.

Technical Field

The invention relates to the technical field of calcium dihydrogen phosphate production, in particular to a production process of calcium dihydrogen phosphate and production equipment of calcium dihydrogen phosphate.

Background

Calcium phosphate salts have three types: calcium dihydrogen phosphate (MCP), calcium hydrogen phosphate (DCP), tricalcium phosphate (TCP). Tricalcium phosphate is gradually eliminated due to biological potency and safety; calcium hydrogen phosphate develops rapidly, but its development is limited due to the lower content of water-soluble phosphorus; the phosphorus content in the calcium dihydrogen phosphate is the highest of the three calcium phosphate salts, and the water-soluble phosphorus content is higher and accounts for more than 90 percent of the total phosphorus, so that the calcium dihydrogen phosphate is beneficial to the absorption of calcium and phosphorus by aquatic animals, is an excellent high-efficiency phosphate feed additive, and is widely used in feed additives of aquatic animals and livestock and poultry animals.

The existing monocalcium phosphate has long production period, the solubility of monocalcium phosphate in aqueous solution is large, crystals are not easy to separate out, and meanwhile, the free acid on the surface of a finished product is high, so that the finished product is easy to agglomerate, and when the monocalcium phosphate is produced on site, the feed liquid needs to be transported for many times by manpower, so that a large amount of manpower is consumed, and the production efficiency is greatly influenced.

Therefore, a production process and equipment of monocalcium phosphate are provided.

Disclosure of Invention

The technical task of the invention is to provide a production process and equipment of monocalcium phosphate to solve the problems.

The technical scheme of the invention is realized as follows:

the invention provides a production process of monocalcium phosphate, which specifically comprises the following steps:

s1, putting concentrated phosphoric acid and calcium hydrophosphate into a reaction mechanism (200) in calcium dihydrogen phosphate production equipment for mixing reaction, wherein the mass ratio P/Ca of the concentrated phosphoric acid to the calcium hydrophosphate is 3.5-4;

s2, drying the wet material after the reaction in the step S1 through a drying mechanism to obtain a semi-finished product of monocalcium phosphate;

s3, guiding the semi-finished monocalcium phosphate prepared in the step S2 into a crushing and screening mechanism for crushing and screening, wherein the powder collected after screening is finished monocalcium phosphate, and the powder which is not screened is collected by a collection box in the crushing and screening mechanism and then is crushed again;

and S4, cooling the crushed finished monocalcium phosphate to room temperature, and then weighing, packaging and warehousing.

Preferably, the dibasic calcium phosphate is sieved through a 400 mesh sieve before the concentrated phosphoric acid is reacted with the dibasic calcium phosphate in step S1.

Preferably, the reaction temperature in step S1 is 55-65 ℃ and the reaction time is 50-80 min.

Preferably, a medicine storage tank is fixedly arranged at the top of the reaction box, the bottom of the medicine storage tank is communicated with a medicine outlet pipe, the lower end of the medicine outlet pipe is communicated with the inside of the reaction box, and a medicine outlet valve is arranged on the medicine outlet pipe.

The invention also provides production equipment of monocalcium phosphate, which comprises a base, wherein the base is respectively provided with a reaction mechanism, a drying mechanism and a crushing and screening mechanism;

the reaction mechanism comprises a reaction tank and a stirring assembly, the reaction tank is fixedly arranged above the base through a support, the top of the reaction tank is fixedly connected with a top cover, the top of the top cover is provided with a feeding port, the bottom of the reaction tank is communicated with a discharging pipe, and a valve is arranged on the discharging pipe;

the stirring assembly comprises a driving motor and a first rotating rod, the first rotating rod is rotatably arranged inside the reaction tank, the driving motor is fixedly installed at the top of the top cover, a gear box is fixedly connected to the bottom of the top cover, the upper end of the first rotating rod sequentially rotates to penetrate through the gear box and the top cover and is fixedly connected with a rotating shaft of the driving motor through a coupler, a driving gear is fixedly connected to the upper end of the first rotating rod and is located inside the gear box, two driven gears are rotatably arranged inside the gear box and are located on two sides of the driving gear, the driven gears are meshed with the driving gear, a second rotating rod is fixedly connected to the bottom of the driven gears, a first helical blade is fixedly connected to the lower end of the first rotating rod, and a second helical blade is fixedly connected to the lower end of the second rotating rod;

the drying mechanism comprises a spray dryer, the spray dryer is fixedly mounted at the top of the base through supporting legs, a feeding pump is fixedly mounted at the top of the base, a feeding hole of the feeding pump is communicated with the lower end of the blanking pipe through a first connecting pipe, and a discharging hole of the feeding pump is communicated with a feeding hole of the spray dryer through a second connecting pipe;

the crushing and screening mechanism comprises a crushing box, the crushing box is arranged at the top of the base, crushing rollers are symmetrically and rotatably arranged at the upper end in the crushing box, a crushing motor is fixedly arranged on one side of the crushing box through an installation seat, a rotating shaft of one of the crushing rollers rotatably penetrates through one side of the crushing box and is fixedly connected with the rotating shaft of the crushing motor, a main gear is fixedly connected onto the rotating shaft of the crushing motor, a rotating shaft of the other crushing roller rotatably penetrates through one side of the crushing box, the end part of the other crushing roller is fixedly connected with a driven gear, and the main gear is meshed with the driven gear;

a sieve plate is arranged in the crushing box below the crushing roller, and two opposite side surfaces of the sieve plate are connected with the inner wall of the crushing box through limiting springs;

the top fixed mounting of base has the transfer pump, the discharge gate of spray dryer pass through the inlet pipe with the feed inlet of transfer pump links to each other, the discharge gate of transfer pump pass through the discharging pipe with smash the inside top of case and be linked together.

Preferably, the reaction tank is provided with a temperature control assembly, the temperature control assembly comprises an oil cooler, an oil path is arranged in the reaction tank, an oil inlet nozzle is fixedly connected to the upper end of the reaction tank and communicated with an oil inlet of the oil path, an oil outlet nozzle is fixedly connected to the lower end of the reaction tank and communicated with an oil outlet of the oil path, the oil cooler is fixedly mounted at the top of the support, an oil inlet of the oil cooler is communicated with the oil outlet nozzle through an oil outlet pipe, and an oil outlet of the oil cooler is communicated with the oil inlet nozzle through an oil inlet pipe. .

Preferably, an ultrasonic wave transduction plate is fixedly mounted on one side of the sieve plate.

Preferably, a collecting box is fixedly connected to one side of the crushing box, a through hole is formed in the lower end of one side of the crushing box, the sieve plate is arranged in an inclined mode, one end of the sieve plate penetrates through the through hole and extends into the collecting box, a feeding hopper is arranged at the top of the crushing box, and a sealing cover is arranged at the top of the feeding hopper.

As preferred, the top of base is provided with the control box, the inside fixed mounting of control box has the PLC controller, the bottom fixed mounting of top cap has temperature sensor, temperature sensor with the input electric connection of PLC controller, the surface mosaic of control box installs the display screen, the display screen with the output electric connection of PLC controller.

Preferably, door plates are arranged on one side of the crushing box and one side of the collecting box.

Preferably, the crushing motor, the driving motor, the feeding pump, the transmission pump and the valve are all controlled by the PLC.

Compared with the prior art, the invention has the advantages and positive effects that:

1. according to the invention, by reacting phosphoric acid with calcium hydrogen phosphate powder and controlling the ingredient ratio of phosphoric acid to calcium hydrophosphate, the whole production flow for preparing calcium dihydrogen phosphate is short, concentration and crystallization are not needed, free acid on the surface of the product is reduced, the finished product of calcium dihydrogen phosphate is not easy to agglomerate, and the quality of the finished product is better.

2. According to the invention, the stirring component is matched with the temperature control component, so that the reaction of phosphoric acid and calcium hydrogen phosphate powder is carried out in the forward and reverse reaction directions, the reaction of phosphoric acid and calcium hydrogen phosphate powder is more thorough, the reaction efficiency is improved, the consumption of raw materials is reduced, and the production cost is reduced.

3. Through the cooperation of the reaction mechanism and the drying mechanism, the crushing and screening mechanism realizes integrated production, the manual participation degree is low, and the production efficiency is improved while the manpower consumption is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of a process for producing monocalcium phosphate according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a production apparatus having a monocalcium phosphate according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of another perspective of a calcium dihydrogen phosphate production facility according to an embodiment of the present invention;

FIG. 4 is a schematic rear view of a calcium dihydrogen phosphate production apparatus according to an embodiment of the present invention;

FIG. 5 is one of schematic sectional views of the reaction tank having a calcium dihydrogen phosphate production apparatus according to the embodiment of the present invention;

FIG. 6 is a second schematic sectional view of a reaction tank having a calcium dihydrogen phosphate production facility according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a pulverizing and sieving mechanism of a calcium dihydrogen phosphate production apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic sectional view showing the structure of a crushing tank of a calcium dihydrogen phosphate production apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural view of an oil circuit of a production apparatus having a monocalcium phosphate according to an embodiment of the present invention.

In the figure: 100. a base; 101. a support; 102. a control box; 103. a display screen;

200. a reaction mechanism; 201. a reaction tank; 202. a top cover; 203. a drive motor; 204. a feed port; 205. an oil cooler; 206. an oil inlet pipe; 207. an oil outlet pipe; 208. a first connecting pipe; 209. a feed pump; 210. a second connecting pipe; 211. a discharging pipe; 212. a valve; 213. a second helical blade; 214. rotating the second rod; 215. a first helical blade; 216. rotating the first rod; 217. a squeegee; 218. a gear case; 219. a driving gear; 220. a driven gear; 221. an oil path; 222. an oil inlet nozzle; 223. an oil outlet nozzle; 224. a temperature sensor;

300. a drying mechanism; 301. a spray dryer; 302. a support leg;

400. a crushing and screening mechanism; 401. a crushing box; 402. a feed hopper; 403. sealing the cover; 404. a crushing roller; 405. a grinding motor; 406. a mounting seat; 407. a collection box; 408. a sieve plate; 409. a limiting spring; 410. an ultrasonic transducing plate; 411. a through hole; 413. a slave gear; 414. a main gear; 415. a door panel;

501. a transfer pump; 502. a feed pipe; 503. and (4) discharging the pipe.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The invention is further described with reference to the following figures and specific examples.

Example 1

As shown in fig. 1, the production process of monocalcium phosphate provided by the invention specifically comprises the following steps:

s1, putting concentrated phosphoric acid and calcium hydrophosphate into a reaction mechanism 200 in calcium dihydrogen phosphate production equipment for mixing reaction, wherein the mass ratio P/Ca of the concentrated phosphoric acid to the calcium hydrophosphate is 3.5-4;

s2, drying the wet material after the reaction in the step S1 by a drying mechanism 300 to obtain a semi-finished product of monocalcium phosphate;

s3, guiding the semi-finished monocalcium phosphate prepared in the step S2 into a crushing and screening mechanism 400 for crushing and screening, wherein the powder collected after screening is finished monocalcium phosphate, and the powder which is not screened is collected by a collecting box 407 in the crushing and screening mechanism 400 and then is crushed again;

and S4, cooling the crushed finished monocalcium phosphate to room temperature, and then weighing, packaging and warehousing.

Example 2.

As shown in fig. 2-9, the production equipment of monocalcium phosphate provided by the present invention specifically comprises a base 100, a reaction mechanism 200, a drying mechanism 300, and a pulverizing and sieving mechanism 400;

the reaction mechanism 200 is composed of a reaction tank 201 and a stirring component, the reaction tank 201 is fixedly arranged above the base 100 through a support 101, the top of the reaction tank 201 is fixedly connected with a top cover 202, the top of the top cover 202 is provided with a feeding port 204, the bottom of the reaction tank 201 is communicated with a blanking pipe 211 for facilitating blanking, and the blanking pipe 211 is provided with a valve 212;

the stirring assembly comprises a driving motor 203, a first rotating rod 216, a gear box 218, a driving gear 219, a driven gear 220, a second rotating rod 214, a first helical blade 215 and a second helical blade 213, the first rotating rod 216 is rotatably arranged inside the reaction tank 201, the driving motor 203 is fixedly arranged at the top of the top cover 202, the gear box 218 is fixedly connected at the bottom of the top cover 202, the upper end of the first rotating rod 216 sequentially rotates to penetrate through the gear box 218 and the top cover 202 and is fixedly connected with a rotating shaft of the driving motor 203 through a coupler, the driving gear 219 is fixedly connected at the upper end of the first rotating rod 216, the driving gear 219 is positioned inside the gear box 218, the two driven gears 220 are rotatably arranged inside the gear box 218, the two driven gears 220 are positioned at two sides of the driving gear 219, the driven gears 220 are meshed with the driving gear 219, the second rotating rod 214 is fixedly connected at the bottom of the driven gears 220, the first helical blade 215 is fixedly connected at the lower end of the first rotating rod 216, the second helical blade 213 is fixedly connected with the lower end of the second rotating rod 214, so as to avoid the raw materials from being adhered to the bottom of the reaction tank 201, so that a dead zone exists in the reaction, the bottom of the rotating rod 216 is fixedly connected with a scraper 217, the scraper 217 is contacted with the bottom of the reaction tank 201, in order to conveniently and stably control the temperature in the reaction tank 201 and facilitate the reaction in the forward and reverse directions, a temperature control assembly is arranged on the reaction tank 201, the temperature control assembly comprises an oil cooler 205, an oil path 221 is arranged in the reaction tank 201, an oil inlet nozzle 222 which is communicated with an oil inlet of the oil path 221 is fixedly connected to the upper end of the reaction tank 201, an oil outlet nozzle 223 which is communicated with an oil outlet of the oil path 221 is fixedly connected to the lower end of the reaction tank 201, the oil cooler 205 is fixedly arranged at the top of the bracket 101, an oil inlet of the oil cooler 205 is communicated with the oil outlet nozzle 223 through an oil outlet pipe 207, and an oil outlet of the oil cooler 205 is communicated with the oil inlet nozzle 222 through an oil inlet pipe 206;

the operating principle of the reaction mechanism 200 is as follows: after the reaction materials are put into the reaction tank 201, the driving motor 203 is started, the driving motor 203 drives the first rotating rod 216 to rotate, the driving gear 219 is matched with the driven gear 220 to enable the second rotating rod 214 to rotate, the rotating directions of the first rotating rod 216 and the second rotating rod 214 are opposite, so that the reaction materials at the bottom are driven by the first helical blade 215 on the first rotating rod 216 to move upwards, the reaction materials at the top are moved downwards by the second helical blade 213 on the second rotating rod 214, rapid mixing of the reaction materials is realized, sufficient reaction can be carried out on phosphoric acid and calcium hydrophosphate, because the reaction is an exothermic reaction, after the temperature in the reaction tank 201 rises, the reaction between the phosphoric acid and the calcium hydrophosphate is slowed down, even stopped or reversely reacted, therefore, during the reaction, the oil cooler 205 is started, cold oil is introduced into the oil path 221 through the oil path 221, absorbing heat in the reaction tank 201, keeping the temperature in the reaction tank 201 constant all the time, and ensuring that the reaction is carried out towards the positive reaction direction;

the drying mechanism 300 is composed of a spray dryer 301, the spray dryer 301 is fixedly installed at the top of the base 100 through supporting legs 302, a feeding pump 209 is fixedly installed at the top of the base 100, a feeding hole of the feeding pump 209 is communicated with the lower end of the discharging pipe 211 through a first connecting pipe 208, a discharging hole of the feeding pump 209 is communicated with a feeding hole of the spray dryer 301 through a second connecting pipe 210, after reaction in the reaction tank 201 is finished, wet materials after the reaction are sent into the spray dryer 301 through the feeding pump 209 to be dried quickly, and the drying temperature is 140-200 ℃;

the crushing and screening mechanism 400 comprises a crushing box 401, two crushing rollers 404, a crushing motor 405 and a sieve plate 408, wherein the crushing box 401 is arranged at the top of the base 100, the two crushing rollers 404 are symmetrically and rotatably arranged inside the crushing box 401, the crushing motor 405 is fixedly arranged at one side of the crushing box 401 through a mounting seat 406, a rotating shaft of one crushing roller 404 rotatably penetrates through one side of the crushing box 401 and is fixedly connected with a rotating shaft of the crushing motor 405, a main gear 414 is fixedly connected to the rotating shaft of the crushing motor 405, a rotating shaft of the other crushing roller 404 rotatably penetrates through one side of the crushing box 401, the end part of the other crushing roller is fixedly connected with a driven gear 413, the main gear 414 is meshed with the driven gear 413, the sieve plate 408 is positioned below the crushing rollers 404, two opposite side surfaces of the sieve plate 408 are both connected with the inner wall of the crushing box 401 through a limiting spring 409, a transmission pump 501 is fixedly arranged at the top of the base 100, a discharge port of the spray dryer 301 is connected with a feed port of the transmission pump 501 through a feed pipe 502, a discharge hole of the transfer pump 501 is communicated with the inside of the top of the crushing box 401 through a discharge pipe 503;

the working principle of the pulverizing and sieving mechanism 400 is as follows: the material after drying is delivered to crushing case 401 through transfer pump 501 in, then starts crushing motor 405, drives two crushing roller 404 opposite direction movements through crushing motor 405 and smashes the material, and the material that qualifies after the material after smashing passes through sieve 408 screening falls into the bottom of crushing case 401 after being sieved, and the great material of granule is kept apart on sieve 408.

An ultrasonic transducer plate 410 is fixedly mounted on one side of the screen plate 408.

By adopting the technical scheme, the screening speed of the screen plate 408 can be increased, and the working efficiency is improved.

Smash one side fixedly connected with collecting box 407 of case 401, smash one side lower extreme of case 401 and seted up through-hole 411, sieve 408 sets up for the slope, and the one end of sieve 408 runs through the inside that through-hole 411 stretched into collecting box 407, and the top of smashing case 401 is provided with feeder hopper 402, and the top of feeder hopper 402 is provided with closing cap 403.

Through adopting above-mentioned technical scheme, can collect the great material of granule in collection box 407, then throw into crushing case 401 once more through the material of big granule of feeder hopper 402 with the collection in, smash, through the closing cap 403 that sets up, when can avoiding smashing, the dust drifts out, pollutes peripheral air.

The top of base 100 is provided with control box 102, and the inside fixed mounting of control box 102 has the PLC controller, and the bottom fixed mounting of top cap 202 has temperature sensor 224, and temperature sensor 224 and the input electric connection of PLC controller, the surface mosaic of control box 102 installs display screen 103, display screen 103 and the output electric connection of PLC controller.

Through adopting above-mentioned technical scheme, the staff can know the inside temperature of retort 201 in real time, the staff's of being convenient for judgement.

Door panels 415 are provided on both the side of the crush box 401 and the side of the collection box 407.

Through adopting above-mentioned technical scheme, be convenient for take out the material or the large granule material of accomplishing smashing.

The grinding motor 405, the drive motor 203, the feed pump 209, the transfer pump 501 and the valve 212 are all controlled by a PLC controller.

By adopting the technical scheme, the operation of workers is facilitated.

The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.