CN205307986U

CN205307986U - Calcium hydrogen phosphate grinds pulp screen and divides system

Info

Publication number: CN205307986U
Application number: CN201521045639.8U
Authority: CN
Inventors: 孙天桥
Original assignee: Yunnan Shanshi Chemical Co Ltd
Current assignee: Yunnan Shanshi Chemical Co Ltd
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-06-15
Anticipated expiration: 2025-12-16

Abstract

The utility model relates to a calcium hydrogen phosphate production facility field. Aim at provides a high screening performance's calcium hydrogen phosphate grinds pulp screen and divides system. The utility model provides a: a calcium hydrogen phosphate grinds pulp screen and divides system, includes the casing, casing internally mounted has screening plant, precipitation equipment. Screening plant is including being located the screen frame of casing, and the screen frame is the back taper, and screen frame upper portion sets up and extends to the outside feed inlet of casing, and the lower part is connected with the pivot, and coaxial and lower extreme extends to the casing and is connected with the motor outward with the screen frame in the pivot. Precipitation equipment is located the screen frame outside including the sedimentation chamber who is located the casing, sedimentation chamber to the emptying door that can open and close is set up in the bottom, constitute the liquid collecting cavity between casing side and the sedimentation chamber lateral surface, the upper portion of sedimentation chamber side sets up the overflow mouth, and the lower part of side sets up the leakage fluid dram. The utility model discloses a screening plant and precipitation equipment's inter combination has realized high -efficient separation.

Description

A kind of secondary calcium phosphate mill slurry screening system

Technical field

The utility model relates to secondary calcium phosphate production unit field, is specifically related to a kind of secondary calcium phosphate mill slurry screening system.

Background technology

Secondary calcium phosphate, chemical formula is CaHPO4 2H2O, white monoclinic system crystal powder, odorless, tasteless. Usually exist with the form of dihydrate, stable in the air, it is heated to 75 DEG C and starts to lose crystal water and become anhydride, high temperature then turns into pyrophosphate salt. It is soluble in dilute hydrochloric acid, dust technology, acetic acid, it is slightly soluble in water (100 DEG C, 0.025%), is insoluble to ethanol. Secondary calcium phosphate effect is extensive, as: 1. making reinforcer, China's regulation can be used for biscuit, dispensed food for baby, and maximum usage quantity is 1.0g/kg; Also can be used as quality improver, for flour products of fermenting, use in right amount by need of production. 2. as food and feed additive, with the phosphorus in supplementary poultry and livestock feed, calcium constituent. 3. foodstuffs industry is used as raising agent, for biscuit, milk-substitute, it may also be useful to amount is by normal need of production. Also it is used as bread manufacture yeast culture agent. Also flour-dough improver, accessory substance it is used as. 4. can be used as making fodder additives, with the phosphorus in supplementary fowl, poultry feed, calcium constituent. As the auxiliary fodder of poultry, feed digestion can be impelled, poultry body weight is increased, to increase meat yield, milk production, egg productivity, also can treat the rickets of livestock, richets, anemia etc. simultaneously. 5. it is used as analytical reagent, stabilizer for plastics, food and feed additive, also for glass industry.

Conventional secondary calcium phosphate preparation method has a lot, and two sections of neutralisations are a kind of important method wherein. In the production process of secondary calcium phosphate, after utilizing screening system to be sieved by slurries, bigger solid crystal is stayed in sieve nest, but less crystallization is mixed in slurries discharges. Containing a large amount of fine particles in this mother liquor just causing backflow, if when not precipitated out by fine particle, directly making slurries enter down one reactions steps, this have impact on ensuing reaction efficiency and obtained quality product undoubtedly, affects production efficiency.

Summary of the invention

The purpose of this utility model is to provide the secondary calcium phosphate mill slurry screening system of a kind of high sieve performance.

For achieving the above object, the technical scheme that the utility model adopts is: a kind of secondary calcium phosphate mill slurry screening system, comprises base, described base is provided with cylindrical housing, and described enclosure interior is provided with screening plant, precipitation separation device.

Described screening plant comprises the sieve nest being positioned at housing, and described sieve nest is back taper, and sieve nest top arranges and extends to the opening for feed of hull outside, and bottom is connected with rotating shaft upper end, and described rotating shaft is coaxial with sieve nest and lower end extends to housing and is connected with electric motor outward.

Described precipitation separation device comprises the precipitation chamber being positioned at housing, and described precipitation chamber is positioned at outside sieve nest, and top, described precipitation chamber is in the taper matched with sieve nest, and bottom is cylindrical and extends to housing bottom, and arranges in bottom and able to turn on or off put material door; Liquid collecting chamber is formed between side and precipitation chamber outer side in described housing; The top of side, described precipitation chamber arranges overflow port, and the bottom of side arranges discharge opeing mouth, and described discharge opeing mouth place arranges magnetic valve, and described overflow port height is lower than the lower end of sieve nest.

Preferably, described sieve nest lower end position is highly located in precipitation chamber 1/2nd, and described discharge opeing mouth is positioned at precipitation side, chamber 1/4th and highly locates.

Preferably, to divide different heights to arrange multiple for described discharge opeing mouth.

Preferably, the part that described rotating shaft is positioned at precipitation chamber arranges sleeve pipe, and described casing pipe sleeve is located in rotating shaft, arranges bearing in sleeve pipe, and described rotating shaft is arranged on bearing.

Preferably, described base side is provided with roller set, and lower surface is provided with screw block group.

The beneficial effects of the utility model embody a concentrated reflection of, by be combineding with each other of screening plant and precipitation separation device, it is achieved that high efficiency separation. Particularly, the sieve nest of back taper improves screening efficiency, and the slurries sieved out drop down onto precipitation chamber, and precipitate and separate in precipitation chamber, takes care of the pence. Avoid fine particle cause the waste of resource with slurries discharge or return reactor reaction repeated with slurries. Thus improve sieve performance greatly, also just improve production efficiency and the economic benefit of enterprise.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is internal structure schematic diagram of the present utility model.

Embodiment

In conjunction with a kind of secondary calcium phosphate mill slurry screening system shown in Fig. 1-2, comprising base 1, described base 1 is provided with cylindrical housing 2, described housing 2 inside is provided with screening plant, precipitation separation device. Described screening plant comprises the sieve nest 3 being positioned at housing 2, described sieve nest 3 is in back taper, sieve nest 3 top arranges and extends to the opening for feed 4 of housing 2 outside, and bottom is connected with rotating shaft 5 upper end, and described rotating shaft 5 is coaxial with sieve nest 3 and lower end extends to housing 2 and is connected with electric motor 6 outward. Owing to sieve nest 3 is in back taper, so sieve nest 3 is in the process rotated, concentrates on the material bottom sieve nest 3 and more easily upwards disperse along sieve nest 3 side, this just makes material more even, it is to increase screening effect.

Described precipitation separation device comprises the precipitation chamber 7 being positioned at housing 2, described precipitation chamber 7 is positioned at outside sieve nest 3, top, described precipitation chamber 7 is in the taper matched with sieve nest 3, and bottom is cylindrical and extends to bottom housing 2, and arranges able to turn on or off putting in bottom and expect door 8. Usually put material door 8 place and also it is provided with the rubber circle for sealing or other seal assemblies, to prevent precipitation chamber is leaked. Liquid collecting chamber 9 is formed between side and precipitation chamber 7 outer side in described housing 2.The top of side, described precipitation chamber 7 arranges overflow port 10, and the bottom of side arranges discharge opeing mouth 11, and described discharge opeing mouth 11 place arranges magnetic valve 12, and described overflow port 10 height is lower than sieve nest 3 times ends.

In the middle of use procedure of the present utility model, the mixture of unsized slurries and crystallization puts into sieve nest 3 by opening for feed 4, and slurries are sieved out by sieve nest 3 in the process rotated. Still containing part fine crystalline in the slurries of now screening place. After this part slurries enters precipitation chamber 7, precipitated and separated in precipitation chamber 7, fine crystalline drops on bottom precipitation chamber 7. After slurries reach overflow port 10, the slurries being positioned at upper strata enter liquid collecting chamber 9 through overflow port 10, and described liquid collecting chamber 9 is usually connected with other devices by pipeline and carries out subsequent disposal. When the solid crystal in precipitation chamber 7 reaches a certain amount of, or after this stage produced, staff's Controlling solenoid valve 12, opens discharge opeing mouth 11, is discharged by the liquid in it, by putting, the small-particle crystallization being positioned at bottom then can expect that door 8 take out. After repeatedly using, prove that, when described sieve nest 3 lower end position highly is located in precipitation chamber 1/7th two, described discharge opeing mouth 11 is positioned at and precipitates side, chamber 7 1/4th when highly locating, best results of the present utility model. Due to precipitation chamber 7 in solid precipitation time many time few, therefore preferably described discharge opeing mouth 11 points of different heights arrange multiple. So just can carry out discharge opeing by opening different discharge opeing mouths 11, when such as small-particle crystallization is more, then open the discharge opeing mouth 11 exceeded, time less, otherwise then. Avoiding problems small-particle crystallization more time, situation about being misprinted out.

In order to avoid rotating shaft 5 to affect sedimentation effect when action, carrying out is that the part that described rotating shaft 5 is positioned at precipitation chamber 7 arranges sleeve pipe 13, and described sleeve pipe 13 is set in rotating shaft 5, arranges bearing 14 in sleeve pipe 13, and described rotating shaft 5 is arranged on bearing 14. So not only sedimentation effect is better, and stability is also higher simultaneously, it may also be useful to the life-span is also longer. Better way is that described base 1 side is provided with roller set 15, and lower surface is provided with screw block group 16. So, just improve its handiness greatly, be convenient to adjustment position, screw block, for supporting, when needs are mobile, retracted, roller set 15 then just can be utilized to move by shown screw block group 16.

Claims

1. a secondary calcium phosphate mill slurry screening system, it is characterised in that: comprising base (1), described base (1) is provided with cylindrical housing (2), described housing (2) inside is provided with screening plant, precipitation separation device;

Described screening plant comprises the sieve nest (3) being positioned at housing (2), described sieve nest (3) is in back taper, sieve nest (3) top arranges and extends to the outside opening for feed (4) of housing (2), bottom is connected with rotating shaft (5) upper end, and described rotating shaft (5) is coaxial with sieve nest (3) and lower end extends to housing (2) and is connected with electric motor (6) outward;

Described precipitation separation device comprises the precipitation chamber (7) being positioned at housing (2), described precipitation chamber (7) is positioned at sieve nest (3) outside, described precipitation chamber (7) top is in the taper matched with sieve nest (3), bottom is cylindrical and extends to housing (2) bottom, and arranges able to turn on or off putting in bottom and expect door (8); Liquid collecting chamber (9) is formed between described housing (2) interior side and precipitation chamber (7) outer side; The top of described precipitation chamber (7) side arranges overflow port (10), and the bottom of side arranges discharge opeing mouth (11), and described discharge opeing mouth (11) place arranges magnetic valve (12), and described overflow port (10) height is lower than sieve nest (3) lower end.

2. secondary calcium phosphate according to claim 1 mill slurry screening system, it is characterised in that: described sieve nest (3) lower end position is highly located in precipitation chamber (7) 1/2nd, and described discharge opeing mouth (11) is positioned at precipitation chamber (7) side 1/4th and highly locates.

3. secondary calcium phosphate according to claim 2 mill slurry screening system, it is characterised in that: described discharge opeing mouth (11) point different heights arranges multiple.

4. secondary calcium phosphate according to claim 3 mill slurry screening system, it is characterized in that: the part that described rotating shaft (5) is positioned at precipitation chamber (7) arranges sleeve pipe (13), described sleeve pipe (13) is set in rotating shaft (5), arranging bearing (14) in sleeve pipe (13), described rotating shaft (5) is arranged on bearing (14).

5. secondary calcium phosphate according to claim 4 mill slurry screening system, it is characterised in that: described base (1) side is provided with roller set (15), and lower surface is provided with screw block group (16).