CN101863684B

CN101863684B - Monoammonium phosphate particle screening system

Info

Publication number: CN101863684B
Application number: CN201010203227A
Authority: CN
Inventors: 杨贵勇
Original assignee: SICHUAN YINGFENG INDUSTRY Co Ltd
Current assignee: SICHUAN YINGFENG INDUSTRY Co Ltd
Priority date: 2010-06-19
Filing date: 2010-06-19
Publication date: 2012-10-10
Anticipated expiration: 2030-06-19
Also published as: CN101863684A

Abstract

The invention discloses a monoammonium phosphate particle screening system belonging to the field of corollary equipment of compound fertilizer production technology. The screening system is realized by the following devices and a connecting mode and is formed by successively connecting a meshwork vibrating screen, an transporter 1, an bucket elevator 1, an drum sieve 1, a hopper, a feeding belt and an drum sieve 2, wherein the large granulometric class returning port of the meshwork vibrating screen, an transporter 2, a crusher, an bucket elevator 2, a returning belt, an transporter 3 and a comminutor are successively connected; the small granulometric class returning port of the meshwork vibrating screen is connected with an transporter 4 and is arranged above the returning belt; and a trough plate is arranged below the small granulometric class returning port of the drum sieve 1, and one end of the trough plate downwards inclines and is arranged above the returning belt. The screening system overcomes the defects that the built-in screening system is easy to scale, frequently overhauls and has short use period, and the appearance of the screened product is poor; and the invention ensures the appearance quality of the particle while improving the yield of the monoammonium phosphate particle and adjusts the product particle grade to be produced as required.

Description

Monoammonium phosphate particle screening system

Technical field

The present invention relates to a kind of compound fertilizer production technology support equipment field, relate in particular to a kind of monoammonium phosphate particle screening system.

Background technology

Monoammonium phosphate (MAP) claim primary ammonium phosphate again; It is a kind of water soluble quick-acting composite fertilizer; The about 5.44:1 of ratio of available phosphorus (AP2O5) and total nitrogen (TN) content; Be one of principal item of high-concentration phosphate compound fertilizers, this product generally can topdress, and also is to produce ternary compound fertilizer, the fertile topmost basic material of BB.

In the particle monoammonium phosphate was produced, rotary drum granulator was realized the whole process of monoammonium phosphate from the slip to the grain forming.The tablets press inwall is welded with the iron plate of a lot of shapes as scoop, and rotatably in the process, the particle of the inside can be raised stir-fry in the oven dry granulation; Form a curtain, the monoammonium phosphate slip then is to be sprayed onto on this curtain from spray gun, makes powdery become small-particle; Small-particle becomes macrobead, and therefore, oarse-grained formation becomes big from powdery through spraying several times gradually; Be not once shaped, this process is to circulate several times, could accomplish.All will have enough powderies and small-particle at head.The rotary drum granulator that adopts at present plays inner tail end and is provided with screen cloth and crusher, and screen cloth comprises that the face sieve and the end sieve, and the macrobead that is filtered out by face is via crusher in crushing powdering and small-particle; Make afterbody that a large amount of powderies and small-particle arranged; And being provided with spiral revert pipe in machine inside, is to be welded on oven dry tablets press inwall, is in the other direction with the tablets press sense of rotation; When tablets press cylindrical shell rotatably the time; The part powdery and the small-particle of afterbody are back to head along pipeline, drop into the spray granulating process once more, then sieve from the discharge port entering vibration sieve of tablets press through the low particle that sifts out of internal screen; Sub-elect size particles, get into packing stage.

The shortcoming of this device is, former tablets press inside is built-in with screen cloth, and area is less, and is insufficient to the screening of phosphorus ammonium particulate, and causing being sent back to crusher, to carry out that ground grains has be finished product greatly, restricted the raising of finished product output, and visual appearance is relatively poor; In the spray granulating process; Tablets press built-in screen cloth contact phosphor ammonium slurry and screening be stained with the fine particle of slip, make the screen cloth easy scale formation, the turnaround is shorter; Just need the screen cloth of cleaning that stops production average 7 working dayss; Frequent cleaning screen cloth has shortened the work-ing life of screen cloth, and the shutdown maintenance influences device fabrication and moves man-hour, has restricted the further raising of finished product output.

Summary of the invention

The present invention has overcome shortcoming of the prior art, and a kind of monoammonium phosphate particle screening system is provided.

In order to solve the problems of the technologies described above; The present invention realizes through following technical scheme: a kind of monoammonium phosphate particle screening system; Comprise vibration sieve, No. 1 trommel screen, hopper, feeding belt, No. 2 trommel screens, crusher, No. 1 chapelet, No. 2 chapelets, return conveyer, No. 1 e Foerderanlage, No. 2 e Foerderanlages, No. 3 e Foerderanlages, No. 4 e Foerderanlages and frid; Wherein the discharge port of vibration sieve joins through the feed end of No. 1 e Foerderanlage and No. 1 chapelet; The discharge end of No. 1 chapelet and No. 1 trommel screen join; Under the finished particle outlet of No. 1 trommel screen hopper is installed, the outlet of hopper places the feeding belt top, connects trommel screen under the feeding belt discharge end No. 2; The big grade particle returning charge mouth of vibration sieve joins through the opening for feed of No. 2 e Foerderanlages and crusher; The discharge port of crusher and No. 2 chapelet feed ends join, and No. 2 chapelet discharge ends below is provided with the returning charge mouth of another termination of return conveyer return conveyer through No. 3 e Foerderanlages and tablets press drive head unit and joins; The granule grade particles returning charge mouth of described vibration sieve joins through No. 4 e Foerderanlages and return conveyer; The granule grade particles discharge port of No. 1 trommel screen is divided into frid, and an end of frid has a down dip, and joins with return conveyer.

Described No. 1 to No. 4 returning charge e Foerderanlage, the upper end is a funnel, is transfer lime down, wherein hopper outlet and transfer lime one end flexibly connect; The mesh size size range of No. 1 trommel screen is 3.0 millimeters-3.5 millimeters; The solarization screen distance size range of No. 2 trommel screens is 2.5 millimeters-2.8 millimeters; The mesh size preferred size of No. 1 trommel screen is 3.0 millimeters, and the mesh size preferred size of No. 2 trommel screens is 2.8 millimeters; The mesh size size range of described vibration sieve is 1.5 millimeters-4.5 millimeters.The aperture preferred size that net is shone on the top layer of described vibration sieve is 4.5 millimeters, and the aperture preferred size that net shines in lower floor is 2.0 millimeters.

Compared with prior art, the invention has the beneficial effects as follows: taken down the inner screen system of rotary drum granulator, crusher is placed outside the tablets press; All products of from tablets press, producing all get into screening system; Sieved by screening system, undesirable product particle returns tablets press from the tablets press outer loop, and it is little to have solved built-in screen cloth face; The inadequate shortcoming of product screening improves finished product output; External screening system; Slip and the fine particle that is stained with slip contacts with the direct of screen cloth when having avoided with the operation of tablets press spray granulating; Slow down the scale velocity of screen cloth, cleaning cycle was increased to 1 month by original 7 days, had also prolonged simultaneously screen cloth work-ing life; Finished particle is through repeatedly screening and classification; Make screening more thoroughly more abundant, guaranteed the product appearance quality, external screening system design; Conveniently the screen cloth of screening system is changed, to satisfy the needs of at any time the product grade of producing being adjusted according to the market requirement.

Description of drawings

Fig. 1 connects synoptic diagram for the present invention;

Fig. 2 connects schematic block diagram for the present invention;

Fig. 3 is the e Foerderanlage synoptic diagram;

Fig. 4 is that No. 1, No. 2 trommel screens connect synoptic diagram.

Mark among the figure: vibration sieve 1; No. 1 cylinder 2; Hopper 3; Feeding belt 4; No. 2 trommel screens 5; Crusher 6; No. 1 chapelet 7; No. 2 chapelets 8; Return conveyer 9; No. 1 e Foerderanlage 10; No. 2 e Foerderanlages 11; No. 3 e Foerderanlages 12; No. 4 e Foerderanlages 13; Frid 14; Finished particle outlet 15; Big grade particle returning charge mouth 16; Granule grade particles returning charge mouth 17; Granule grade particles discharge port 18; Funnel 19; Transfer lime 20; Granule level product outlet 21; Macrobead product outlet 22; Discharge port 23; Tablets press 24; No. 3 chapelets 25.

Embodiment

Disclosed all characteristics in this specification sheets, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.

Disclosed arbitrary characteristic in this specification sheets (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.

As illustrated in fig. 1 and 2; Monoammonium phosphate particle screening system; Comprise 1, No. 1 trommel screen 2 of vibration sieve, hopper 3,4, No. 2 trommel screens 5 of feeding belt, 7, No. 2 chapelets 8 of 6, No. 1 chapelet of crusher, 12, No. 4 e Foerderanlages 13 of 11, No. 3 e Foerderanlages of 10, No. 2 e Foerderanlages of 9, No. 1 e Foerderanlage of return conveyer and frid 14; Wherein No. 1 to No. 4 e Foerderanlage comprises funnel 19 and transfer lime 20; Funnel 19 outlets flexibly connect with transfer lime 20 1 ends, and funnel 19 ends of the discharge port 23 of described vibration sieve 1 and No. 1 e Foerderanlage 10 join, and the feed end of transfer lime 20 and No. 1 chapelet 7 joins; The discharge end of No. 1 chapelet 7 and No. 1 trommel screen 2 join; The finished particle outlet of No. 1 trommel screen 2 is equipped with hopper 3 15 times, and the outlet of hopper 3 places feeding belt 4 tops, connects No. 2 trommel screen 5 under feeding belt 4 discharge ends; The big grade particle returning charge mouth 16 of the vibration sieve of described vibration sieve 1 joins through the opening for feed of No. 2 e Foerderanlages 11 with crusher 6; The discharge port of crusher 6 and No. 2 chapelet 8 feed ends join; The discharge end of No. 2 chapelets 8 below is provided with return conveyer 9, and another termination of belt joins through No. 3 e Foerderanlages 12 returning charge mouth with tablets press 24 drive head units; The granule grade particles returning charge mouth of described vibration sieve 1 connects e Foerderanlage 13 for 17 times No. 4, and the outlet of e Foerderanlage places return conveyer 9 tops; The granule grade particles discharge port 18 of described No. 1 trommel screen 2 is divided into frid 14, and the other end of frid 14 has a down dip, and the termination exports as for return conveyer 9 tops.

Monoammonium phosphate product comes out to send into vibration sieve 1 through No. 3 chapelets 25 from tablets press 24, in vibration sieve 1, is mounted with two-layer screen cloth, and the top layer mesh screen is told underproof big grade particle and collected through No. 2 transport units; And give and return crusher, all the other product particles see through the top layer screen cloth and get into the bottom screen cloth, through screening once more; Wherein the granule grade particles sees through the collection of bottom screen cloth through No. 3 e Foerderanlages, delivers to return conveyer 9 and is sent to e Foerderanlage 12 No. 3, through collecting; Send into tablets press 24 drive head unit returning charge mouths, remaining particle then comes out from the discharge port 23 of vibration sieve 1 on the bottom screen cloth compass screen surface, and No. 1 e Foerderanlage 10 that process connects is down sent into chapelet 7 No. 1; As shown in Figure 4, through 1 chapelet, 7 discharge ends product particle is sent into trommel screen 2 No. 1, through screening; Wherein undesirable small-particle product sees through screen cloth; Be discharged on the frid of dividing into 14 through granule grade particles returning charge mouth 17, the granule grade particles is discharged on the return conveyer 9 along the frid 14 that tilts, through transmitting by No. 3 e Foerderanlages 12; Through collecting, send into tablets press 24 drive head unit returning charge mouths; After No. 1 trommel screen 2 screenings; The remaining particle of screen cloth wire side is a finished particle, sends into down the hopper 3 that connects through the finished particle outlet 15 of No. 1 trommel screen 2, delivers to feeding belt 4 through collecting; Finished particle is delivered to down No. 2 trommel screens 5 that connect by feeding belt 4; Carry out sieving and grading through 5 pairs of finished particles of No. 2 trommel screens according to the grade size, after screening, granule level finished particle sees through screen cloth; Send into packet assembler through granule level product outlet 21, big grade finished product is then sent into packaging process through No. 2 big grade product outlets 22 of trommel screen.

If shown in 3, described No. 1 to No. 4 returning charge e Foerderanlage, the upper end is a funnel 19, is transfer lime 20 down, and wherein funnel 19 outlets flexibly connect with transfer lime 20 1 ends, and the length of transfer lime 20 can be adjusted according to screening system equipment installation situation; The mesh size size range of No. 1 trommel screen 2 is 3.0 millimeters-3.5 millimeters, and the mesh size preferred size is 3.0 millimeters; The solarization screen distance size range of No. 2 trommel screens 5 is 2.5 millimeters-2.8 millimeters, and the mesh size preferred size is 2.8 millimeters; The mesh size size range of described vibration sieve 1 is 1.5 millimeters-4.5 millimeters, and the aperture preferred size that net is shone on the top layer of vibration sieve 1 is 4.5 millimeters, and the aperture preferred size that bottom shines net is 2.0 millimeters.The monoammonium phosphate product particle comes out to send into vibration sieve 1 through No. 3 chapelets 24 from tablets press 24; The screen cloth of described vibration sieve 1 comprises top layer screen cloth and bottom screen cloth, and the range of aperture size of screen cloth is at 1.5 millimeters-4.5 millimeters, and the aperture preferred size of its mesexine sieve is 4.5 millimeters; The aperture preferred size of bottom sieve is 2.0 millimeters; The top layer mesh screen is told particle diameter and is collected through No. 2 transport units 11 greater than 4.5 millimeters big grade particle, and send and return crusher 6, and particle diameter sees through top layer screen cloth entering bottom screen cloth less than all product particles of 4.5 millimeters; Through the screening of bottom screen cloth; Wherein particle diameter sees through the collection of bottom screen cloth through No. 4 e Foerderanlages 13 less than 2.0 millimeters particle, delivers to return conveyer 9 and is sent to e Foerderanlage 12 No. 3, through collecting; Send into tablets press 24 drive head unit returning charge mouths; Remaining particle diameter then comes out from the discharge port 23 of vibration sieve 1 at 2.0 millimeters-4.5 millimeters particle on the bottom screen cloth compass screen surface, sends into chapelet 7 No. 1 through No. 1 e Foerderanlage 10 that connects down, through 1 chapelet, 7 discharge ends product particle is sent into trommel screen 2 No. 1.

As shown in Figure 4, the finished particle of No. 1 trommel screen 2 exports 15 belows and is provided with hopper 3, and the outlet of hopper 3 places feeding belt 4 tops; Feeding belt 4 goes out the mesh size size range that connects 5, No. 1 trommel screen equipment of No. 2 trommel screens under the end and can be 3.0 millimeters-3.5 millimeters, and preferred size can be 3.0 millimeters; The product particle of being sent into by No. 1 chapelet sieves through No. 1 trommel screen, and particle diameter sees through screen cloth less than 2.5 millimeters product particle and is discharged on the frid of dividing into 14 through granule grade particles returning charge mouth 17, and the granule grade particles is discharged on the return conveyer 9 along the frid 14 that tilts; Through transmitting,, send into tablets press 24 drive head unit returning charge mouths through collecting by No. 3 e Foerderanlages 12; Grain size at 2.0 millimeters-4.5 millimeters particle as finished particle; From the finished particle outlet 15 of No. 1 trommel screen 2,, deliver to feeding belt 4 through collecting through the hopper 3 that connects down; Finished particle is delivered to down No. 2 trommel screens 5 that connect by feeding belt 4; The mesh size size range of No. 2 trommel screens can be 2.5 millimeters-2.8 millimeters, and preferred size can be 2.8 millimeters, carries out sieving and grading through 5 pairs of finished particles of No. 2 trommel screens according to the grade size; After screening; Particle diameter sees through screen cloth at 2.5 millimeters-2.8 millimeters finished particle, sends into packet assembler through granule level product outlet 21, and particle diameter is then sent into packaging process through big grade product outlet 22 at 2.8 millimeters-4.5 millimeters big grade finished product.

As requested, if the macrobead demand increases, then only need to increase No. 1 trommel screen 2 mesh sizes; 3.2 millimeters-3.5 millimeters of range of aperture size; The small-particle that then spills is more, and the small-particle that is back to head is also more, after spraying once more; The macrobead product production that forms is many more, and the small-particle product production reduces relatively.In like manner, change the mesh size of little No. 1 trommel screen 2, the small-particle that then is back to head reduces, and then small-particle output increases, and macrobead output reduces relatively.

The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.

Claims

1. monoammonium phosphate particle screening system; Comprise vibration sieve (1) and crusher (6); It is characterized in that: also comprise No. 1 trommel screen (2), hopper (3), feeding belt (4), No. 2 trommel screens (5), No. 1 chapelet (7), No. 2 chapelets (8), return conveyer (9), No. 1 e Foerderanlage (10), No. 2 e Foerderanlages (11), No. 3 e Foerderanlages (12), No. 4 e Foerderanlages (13) and frid (14); Wherein the discharge port (23) of vibration sieve (1) joins through the feed end of No. 1 e Foerderanlage (10) with No. 1 chapelet (7); The discharge end of No. 1 chapelet (7) and No. 1 trommel screen (2) join; Under the finished particle outlet (15) of No. 1 trommel screen (2) hopper (3) is installed; The outlet of hopper (3) places feeding belt (4) top, connects No. 2 trommel screens (5) under feeding belt (4) discharge end; The big grade particle returning charge mouth (16) of described vibration sieve (1) joins through the opening for feed of No. 2 e Foerderanlages (11) with crusher (6); The discharge port of crusher (6) and No. 2 chapelets (8) feed end join; No. 2 chapelets (8) discharge end below is provided with return conveyer (9), and another termination of return conveyer (9) joins through the returning charge mouth of No. 3 e Foerderanlages (12) with tablets press (24) drive head unit; The granule grade particles returning charge mouth (17) of described vibration sieve (1) joins through No. 4 e Foerderanlages (13) and return conveyer (9); The granule grade particles discharge port (18) of described No. 1 trommel screen (2) is divided into frid (14), and an end of frid (14) has a down dip, and port places return conveyer (9) top.

2. monoammonium phosphate particle screening system according to claim 1; It is characterized in that: described No. 1 to No. 4 returning charge e Foerderanlage; The upper end is funnel (19), is transfer lime (20) down, and wherein funnel (19) outlet flexibly connects with transfer lime (20) one ends.

3. monoammonium phosphate particle screening system according to claim 2 is characterized in that: the mesh size size range of said No. 1 trommel screen (2) is 3.0 millimeters-3.5 millimeters; The mesh size size range of described No. 2 trommel screens (5) is 2.5 millimeters-2.8 millimeters.

4. monoammonium phosphate particle screening system according to claim 3 is characterized in that: the mesh size preferred size of described No. 1 trommel screen (2) is 3.0 millimeters; The mesh size preferred size of No. 2 trommel screens (5) is 2.8 millimeters.

5. monoammonium phosphate particle screening system according to claim 1 is characterized in that: the mesh size size range of described vibration sieve (1) is 1.5 millimeters-4.5 millimeters.

6. monoammonium phosphate particle screening system according to claim 5 is characterized in that: the aperture preferred size of the top layer screen cloth of described vibration sieve (1) is 4.5 millimeters, and the aperture preferred size of lower screen is 2.0 millimeters.