CN217110316U

CN217110316U - A improved generation spin flash dryer for compound fertilizer production

Info

Publication number: CN217110316U
Application number: CN202220921820.4U
Authority: CN
Inventors: 张勇; 周建国; 马克猛; 雷鸣; 杨林台
Original assignee: Yunnan Yuntianhua Yunfeng Chemical Co ltd
Current assignee: Yunnan Yuntianhua Yunfeng Chemical Co ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-08-02
Anticipated expiration: 2032-04-20

Abstract

The utility model discloses an improved generation spin flash dryer for compound fertilizer production relates to compound fertilizer apparatus for producing technical field. The rotary flash evaporation dryer comprises a storage hopper, a feeding pipeline and a drying cylinder which are connected in sequence, wherein a feeding screw is arranged in the feeding pipeline, and a first bearing seat and a second bearing seat are sequentially arranged on one end, away from the drying cylinder, of the feeding screw; the air inlet pipe is arranged on the side wall of the bottom of the drying cylinder, the conical air guide sleeve is arranged at the bottom of the drying cylinder, the main shaft is arranged in the middle of the conical air guide sleeve, the stirrer is arranged at the top of the main shaft, an included angle between the side wall of the conical air guide sleeve and the bottom of the conical air guide sleeve is 35-45 degrees, and the width of an air inlet annular gap formed by the conical air guide sleeve and the drying cylinder is 155-165 mm. The problem that materials are blocked due to the fact that the materials penetrate into the gap of the shaft sleeve due to thermal expansion is solved by arranging the plurality of bearing seats at one end far away from the drying cylinder; the balance state between the air flow pressure and the gravity of the raw materials is ensured by setting the angle of the conical air guide sleeve and the width of the air inlet annular gap.

Description

A improved generation spin flash dryer for compound fertilizer production

Technical Field

The utility model relates to a compound fertilizer production technical field, concretely relates to improved generation spin flash dryer for compound fertilizer production.

Background

The rotary flash evaporation drier is a continuous drying equipment, mainly used for drying paste, filter cake and powder materials, and is used for drying powder materials in the production of compound fertilizers. The hot air enters from the bottom side wall tangent line in the drying chamber, a spiral air flow is formed in the barrel, so that the materials to be dried are in a suspension state, the materials are fully contacted through the hot air to achieve the purpose of drying, and the materials to be dried enter the barrel through the spiral conveyor from the feed hopper. For the transport of being convenient for the raw materials, the pay-off screw both ends all are provided with rolling bearing, and one side that is close to the barrel because of receiving the influence of the interior high temperature environment of barrel to appear the inflation for during the material infiltration axle sleeve clearance, cause pay-off screw and axle sleeve to appear locking jump and stop. On the other hand, because of the kuppe leads to the air current to get into the barrel after because of the space grow suddenly for a short time, leads to velocity of flow and pressure to all reduce, and material gravity and air pressure are unable balanced, lead to the material easily to deposit to the barrel bottom and lead to the air inlet annulus to be blocked up, finally lead to the axis of rotation to be obstructed and stop, lead to the complete machine to block up the parking to influence production efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improved generation spin flash dryer for compound fertilizer production, the pay-off screw rod of solving current spin flash dryer easily blocks up air intake gap's problem because of material infiltration and axle sleeve locking, the easy deposit of material.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides an improved generation spin flash dryer for compound fertilizer production which characterized in that: the drying device comprises a storage hopper, a feeding pipeline and a drying cylinder which are sequentially connected, wherein the feeding pipeline is in a hollow tubular shape with an opening at one end, a feeding screw rod is arranged in the feeding pipeline, one end of the feeding screw rod, which is far away from the drying cylinder, is connected with a first motor, and a first bearing seat and a second bearing seat are sequentially arranged at one end of the feeding screw rod, which is far away from the drying cylinder; an air inlet pipe is arranged on the side wall of the bottom of the drying cylinder body, is positioned below the feeding pipeline and is connected with an air outlet of the hot blast stove; the bottom of the drying cylinder body is provided with a conical air guide sleeve, the middle of the conical air guide sleeve is provided with a main shaft, the bottom of the main shaft is connected with a second motor, the top of the main shaft is provided with a stirrer, the included angle between the side wall of the conical air guide sleeve and the bottom of the conical air guide sleeve is 35-45 degrees, and the width of an air inlet annular gap formed by the conical air guide sleeve and the drying cylinder body is 155-165 mm.

The further technical scheme is that a powder material discharge port is vertically arranged at the bottom of the storage hopper, a lump material discharge port is obliquely arranged, an air inlet hole is formed in the side wall of the powder material discharge port, and the air inlet hole is connected with a compressed air supply device.

The further technical proposal is that a stirring shaft is arranged above the powder discharge hole, and the top of the stirring shaft is connected with a third motor.

A further technical scheme is that a filter screen is obliquely arranged at the top of the powder material discharge port, and the bottom of the filter screen is connected with the lump material discharge port.

The technical scheme is that a main stirring knife is arranged at the top of the stirrer, the main stirring knife is arranged in parallel with the side wall of the conical guide sleeve, and an auxiliary stirring knife is horizontally arranged on the outer side wall of the main stirring knife.

The further technical scheme is that the auxiliary stirring knife is T-shaped and is arranged at intervals along the radial direction of the main shaft.

A further technical scheme is that the auxiliary stirring knife comprises a connecting rod and a scraping plate, the scraping plate is fixed at the bottom of the connecting rod, and a reinforcing rod is arranged between the scraping plate and the connecting rod.

The working principle is as follows: the raw materials enter a feeding pipeline from a storage hopper, are conveyed into a drying cylinder body through a feeding screw rod, high-temperature hot air enters an air pipe from a tangential direction through an air inlet pipe, then enters the drying cylinder body from an air inlet annular gap formed between the bottom of the side wall of a conical guide cover and the drying cylinder body, an ascending air flow is formed in the drying cylinder body and is fully mixed and contacted with the raw materials, and dried powder rises along with the air flow and enters a cyclone separator connected with the drying cylinder body for separation to obtain a finished product. Part of the undried raw materials are gathered downwards under the action of gravity, and cannot be accumulated at the bottom of the drying cylinder body to block an air inlet annular space under the stirring of the stirrer and the action of airflow. The feeding screw rod is provided with a plurality of bearing seats at one end far away from the drying cylinder body, so that a rotating bearing close to the drying cylinder body is replaced, and the problem that the feeding screw rod and the shaft sleeve are blocked is avoided.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the plurality of bearing seats are arranged at one end far away from the drying cylinder body, so that the normal operation of the feeding screw rod is ensured, the rotating bearing arranged at the side close to the drying cylinder body is eliminated, and the problem that materials are blocked due to the fact that the materials penetrate into the gap of the shaft sleeve due to thermal expansion is solved; meanwhile, by setting the angle of the conical air guide sleeve and the width of the air inlet annular gap, the balance state between the air flow pressure and the gravity of the raw materials is ensured, and the problem that the air inlet annular gap is blocked by the materials to cause parking is avoided.

2. Through setting up powder and lump material discharge gate respectively in storage mouth exit, separate the lump material through the filter screen, sweep the powder discharge gate through compressed air simultaneously and avoid the powder to adhere on the discharge gate lateral wall, can also combine the stirring effect of (mixing) shaft, reduce the powder caking, the continuous unloading of the raw materials of being convenient for.

3. The main and auxiliary stirring knives are arranged on the stirrer to stir and crush the materials at the bottom of the drying cylinder body, so that the materials are prevented from being accumulated to block an air inlet annular gap; the auxiliary stirring knives are arranged at intervals according to the length, so that the stirring and crushing effects are further improved; through set up the stiffener between scraper blade and connecting rod, further consolidate vice stirring sword, prolong its life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a schematic structural view of the storage hopper of the present invention.

Fig. 4 is a schematic structural view of the stirrer of the present invention.

In the figure: 1-a storage hopper, 101-a powder discharge port, 102-a block discharge port, 104-a filter screen, 2-a feed pipeline, 3-a drying cylinder, 4-a feed screw, 5-a first motor, 6-a first bearing seat, 7-a second bearing seat, 8-an air inlet pipe, 9-a conical guide cover, 10-a main shaft, 11-a second motor, 12-a stirrer, 1201-a main stirring knife, 1202-an auxiliary stirring knife, 1203-a connecting rod, 1204-a scraper, 1205-a reinforcing rod, 13-a stirring shaft and 14-a third motor.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 and 2 show an improved generation spin flash dryer for compound fertilizer production, including storage hopper 1, charge-in pipeline 2, the dry barrel 3 that connects gradually, charge-in pipeline 2 is one end open-ended cavity tubulose and inside is provided with feeding screw rod 4, and feeding screw rod 4 keeps away from the one end of dry barrel 3 and passes through the shaft coupling and be connected with first motor 5, and feeding screw rod 4 keeps away from one of dry barrel 3 and serves to set gradually first bearing 6, second bearing 7. For fixing, a plurality of support frames are arranged on the outer side wall of the feeding pipeline 2 along the length direction of the feeding pipeline.

An air inlet pipe 8 is arranged on the side wall of the bottom of the drying cylinder 3, and the air inlet pipe 8 is positioned below the feeding pipeline 2 and is connected with an air outlet of the hot blast stove; the bottom of the drying cylinder 3 is provided with a conical air guide sleeve 9, the middle part of the conical air guide sleeve 9 is provided with a main shaft 10, the bottom of the main shaft 10 is connected with a second motor 11, and the top of the main shaft 10 is provided with a stirrer 12. In order to ensure the balance between the air pressure and the weight of the raw materials after hot air enters, the included angle between the side wall and the bottom of the conical air guide sleeve 9 is 35-45 degrees, and the width of an air inlet annular gap formed between the conical air guide sleeve 9 and the drying cylinder 3 is 155-165 mm.

In order to avoid blocking caused by the block material entering the drying cylinder, as shown in fig. 3, a powder material outlet 101 and a block material outlet 102 are vertically arranged at the bottom of the storage hopper 1, an air inlet is arranged on the side wall of the powder material outlet 101, and the air inlet is connected with a compressed air supply device. The compressed air sweeps the powder discharge hole 101 to avoid the adhesion of the powder. In order to facilitate lump material separation, the top of the powder material outlet 101 is obliquely provided with a filter screen 104, the bottom of the filter screen 104 is connected with the lump material outlet 102, raw materials are screened by the filter screen 104, qualified powder enters the feeding pipeline 2 from the powder material outlet 101, unqualified lump materials are separated from the lump material outlet 102 and are recycled after being crushed. In order to ensure smooth feeding, a stirring shaft 13 is arranged above the powder discharge hole 101, and the top of the stirring shaft 13 is connected with a third motor 14.

In order to avoid blockage caused by deposition of materials at the bottom of the drying cylinder, a main stirring blade 1201 is arranged at the top of the stirrer 12, the main stirring blade 1201 is arranged in parallel with the side wall of the conical guide sleeve 9, and an auxiliary stirring blade 1202 is horizontally arranged on the outer side wall of the main stirring blade 1201. As shown in fig. 4, the auxiliary stirring blade 1202 is T-shaped and arranged at long and short intervals along the radial direction of the main shaft 10. The auxiliary stirring blade 1202 comprises a connecting rod 1203 and a scraping plate 1204, the scraping plate 1204 is fixed at the bottom of the connecting rod 1203, and a reinforcing rod 1205 is arranged between the scraping plate 1204 and the connecting rod 1203. The main stirring knife 1201 stirs the bottom materials to avoid aggregation, the auxiliary stirring knife 1202 stirs and crushes the bottom materials, the scraping plate 1204 scrapes the materials on the cylinder wall, and the auxiliary stirring knife 1202 is arranged at intervals according to length to further improve the stirring effect.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More particularly, various variations and modifications are possible in the component parts and/or arrangements within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides an improved generation spin flash dryer for compound fertilizer production which characterized in that: the drying device comprises a storage hopper (1), a feeding pipeline (2) and a drying cylinder (3) which are connected in sequence, wherein the feeding pipeline (2) is in a hollow tubular shape with an opening at one end, a feeding screw (4) is arranged in the feeding pipeline, one end, far away from the drying cylinder (3), of the feeding screw (4) is connected with a first motor (5), and a first bearing seat (6) and a second bearing seat (7) are sequentially arranged at one end, far away from the drying cylinder (3), of the feeding screw (4); an air inlet pipe (8) is arranged on the side wall of the bottom of the drying cylinder body (3), and the air inlet pipe (8) is positioned below the feeding pipeline (2) and is connected with an air outlet of the hot blast stove; the air inlet ring gap drying device is characterized in that a conical air guide sleeve (9) is arranged at the bottom of the drying cylinder body (3), a main shaft (10) is arranged in the middle of the conical air guide sleeve (9), the bottom of the main shaft (10) is connected with a second motor (11), a stirrer (12) is arranged at the top of the main shaft (10), an included angle between the side wall of the conical air guide sleeve (9) and the bottom of the conical air guide sleeve is 35-45 degrees, and the air inlet ring gap formed by the conical air guide sleeve (9) and the drying cylinder body (3) is 155-165 mm in width.

2. An improved spin flash dryer for compound fertilizer production as claimed in claim 1, wherein: the powder storage device is characterized in that a powder discharge port (101) is vertically arranged at the bottom of the storage hopper (1), a lump material discharge port (102) is obliquely arranged, an air inlet hole is formed in the side wall of the powder discharge port (101), and the air inlet hole is connected with a compressed air supply device.

3. An improved spin flash dryer for compound fertilizer production as claimed in claim 2, wherein: a stirring shaft (13) is arranged above the powder material outlet (101), and the top of the stirring shaft (13) is connected with a third motor (14).

4. An improved spin flash dryer for compound fertilizer production as claimed in claim 2, wherein: the top of the powder material outlet (101) is obliquely provided with a filter screen (104), and the bottom of the filter screen (104) is connected with the lump material outlet (102).

5. The improved rotary flash dryer for compound fertilizer production as claimed in claim 1, wherein: the top of the stirrer (12) is provided with a main stirring knife (1201), the main stirring knife (1201) is arranged in parallel with the side wall of the conical guide cover (9), and the outer side wall of the main stirring knife (1201) is horizontally provided with an auxiliary stirring knife (1202).

6. An improved spin flash dryer for compound fertilizer production as claimed in claim 5, wherein: the auxiliary stirring knives (1202) are T-shaped and are arranged at intervals along the radial direction of the main shaft (10).

7. An improved spin flash dryer for compound fertilizer production as claimed in claim 5, wherein: the auxiliary stirring knife (1202) comprises a connecting rod (1203) and a scraping plate (1204), the scraping plate (1204) is fixed at the bottom of the connecting rod (1203), and a reinforcing rod (1205) is arranged between the scraping plate (1204) and the connecting rod (1203).