High-tower granulation screening machine for functional fertilizer

Abstract

The utility model discloses a high-tower granulation screening machine for functional fertilizer, and relates to the technical field of fertilizer processing. The screening device comprises a feeding bent pipe, a screening cylinder, a material collecting groove, an air pipe and a cambered surface screening plate, the lower end of the feeding bent pipe is fixedly connected with a connector, the end, away from the feeding bent pipe, of the connector is fixedly connected with the end of the screening cylinder, and the cambered surface screening plate is fixed to the lower portion of the screening cylinder in a penetrating mode; two symmetrically-distributed air pipes are arranged on the periphery of the upper portion of the screening barrel, branch pipes penetrating through the screening barrel are fixed to the lower portion of the peripheral side of each air pipe at equal intervals, and the bottom ends of the branch pipes extend into an inner cavity of the screening barrel and are fixedly provided with air spraying heads. Through the arrangement of the feeding bent pipe, the screening barrel, the air pipe, the air spraying head and the cambered surface screening plate, the problems that a conventional screening machine is short in screening stroke and long in consumed time, the large-batch continuous screening requirement cannot be met, screening is affected by moisture possibly existing on the surface of fertilizer, and the sputtering phenomenon possibly exists during fertilizer screening are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fertilizer processing technical field, especially, relate to a functional fertilizer's high tower granulation screening machine. BACKGROUND

[0002] Functional fertilizer refers to the fertilizer that in addition to containing essential nutrient elements for plants, other functional ingredients are added to meet the specific needs of different plants in different growth stages, improve crop yield and quality, and improve soil environment. We usually call it compound fertilizer. This kind of fertilizer is usually formed by high tower granulation. High tower granulation is to spray molten urea and phosphorus, potassium and other raw materials from the top of the high tower under the condition of full mixing, and then cool and granulate naturally. There is no water introduction and three waste emissions in the production process. Although high tower granulation is fast and energy-saving, it still needs to be screened after granulation to screen out qualified fertilizer for sale. However, it still has the following problems in actual screening operation:

[0003] 1. The conventional screening machine is only a vibrating screening or a rotating screening, or a natural falling screening. The screening stroke of this kind of screening is usually short, the screening time is long, a large amount of time is needed for screening treatment, and the screening amount is not large, so it usually cannot meet the demand of continuous screening in large quantities.

[0004] 2. Secondly, high tower granulation is a natural cooling granulation process. Although there is no external water introduction, it is not enough to ensure that the surface of the fertilizer particles is completely dry. The residual water may affect the screening.

[0005] 3. Finally, there may be a phenomenon of spattering of fertilizer particles during the screening process, which may cause waste of fertilizer and increase the cost. INVENTION CONTENTS

[0006] The utility model discloses a functional fertilizer's high tower granulation screening machine, and through the setting of the inlet elbow, the screening cylinder, the air pipe, the air jet head and the cambered screen plate, the problems of short screening stroke, long time consumption, incapability of meeting the demand of continuous screening in large quantities, possible water on the surface of fertilizer affecting the screening and possible spattering phenomenon during the screening of fertilizer of the conventional screening machine are solved.

[0007] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0008] The utility model discloses a functional fertilizer's high tower granulation screening machine, which comprises an inlet elbow, a screening cylinder, a material collecting groove, an air pipe and a cambered screen plate.

[0009] The outer periphery of the upper part of the screening cylinder is provided with two symmetrical air pipes, and the periphery of each air pipe is fixed with a branch pipe penetrating through the screening cylinder at equal intervals, and the bottom end of the branch pipe extends into the inner cavity of the screening cylinder and is fixed with a jet head.

[0010] Further, the upper and lower ports of the feeding elbow are in the horizontal pipe state, the middle part of the feeding elbow is in the inclined pipe state, and the inclined pipe of the middle part of the feeding elbow is further provided with a plug valve, and the plug valve is located at the middle upper part of the feeding elbow.

[0011] Further, the end of the screening cylinder away from the joint is fixed with a discharge cloth bag, and the inner diameter of the screening cylinder is equal to that of the feeding hose.

[0012] Further, the outer side of the screening cylinder outside the arc surface screen plate is fixed with a material collecting tank, and the material collecting tank completely covers the screening cylinder, the inside of the material collecting tank is hollow, and the bottom of the material collecting tank is fixed with equally distributed discharge hoppers.

[0013] Further, the jet heads below the two air pipes are staggered, and the jet heads are downwardly inclined and blow air towards the discharge end of the screening cylinder.

[0014] Further, the outer arc surface of the arc surface screen plate is on the same curved surface as the outer surface of the screening cylinder.

[0015] Further, the two ends of the air pipe are fixed with end heads, and the end heads are fixed on the outer side of the screening cylinder, and the air pipe is further fixed with a connecting pipe penetrating through the outer periphery.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model discloses a feeding elbow, a screening cylinder, an air pipe, a jet head and an arc surface screen plate are arranged, which solve the problems of short screening stroke, long time consumption and incapability of meeting the continuous screening demand of large quantities of the conventional screening machine. Firstly, the feeding elbow is used to guide the fertilizer particles needing screening into the screening cylinder, and the stroke of the screening cylinder is much longer than that of the conventional screening machine, so that the long stroke can meet the full screening demand, and the fertilizer particles can contact the arc surface screen plate at the lower part of the screening cylinder and be blown by the jet heads at the bottom of the two air pipes, so that the fertilizer particles on the arc surface screen plate are gradually moved to the outlet of the screening cylinder, and the screening is continuously carried out during the moving process. The screening stroke is long, and the screening can be completed at one time, and the time consumption is short. The fertilizer particles are quickly blown by the air flow for screening, and the whole screening process can be continuously carried out without interruption.

[0018] 2. The utility model discloses a pipe, jet head is set up, solved the moisture that possibly exists on the surface of fertilizer influence screening problem, because adopt the compressed air of pipe input and send, cooperate jet head and blow to the surface of fertilizer particle, make it movement and screen, meet the screening demand of travel, satisfy the effect of air drying, a small amount of moisture etc. will not influence screening, also will not make fertilizer particle adhere to the surface of cambered screen plate.

[0019] 3. The utility model discloses a screening cylinder, cambered screen plate is set up, solved the problem that there can be sputtering phenomenon when fertilizer screening, screening cylinder lower part installs cambered screen plate, for screening use, screening cylinder upper part is closed, and the import and export are set up in both ends, whole screening process almost does not contact with external environment, also can not cause sputtering phenomenon to produce in the blowing and screening process of fertilizer particle, can avoid fertilizer drop, reduce the cost, guarantee screening quality. DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be to the embodiment description needed to use the drawing briefly introduces.

[0021] Figure 1 It is a perspective view of a functional fertilizer high tower granulation screening machine;

[0022] Figure 2 It is Figure 1 Structure diagram of another angle;

[0023] Figure 3 It is the sectional view of inlet elbow;

[0024] Figure 4 It is the connection diagram of screening cylinder and material collecting groove;

[0025] Figure 5 It is the bottom view of screening cylinder;

[0026] Figure 6 It is the sectional view of screening cylinder;

[0027] Figure 7 It is the structure diagram of material collecting groove.

[0028] Signs:

[0029] 1, inlet elbow; 101, plug valve; 102, joint; 2, screening cylinder; 201, discharge cloth bag; 3, material collecting groove; 301, lower hopper; 4, air pipe; 401, connecting pipe; 402, end; 403, branch pipe; 404, jet head; 5, cambered screen plate. DETAILED DESCRIPTION

[0030] The technical scheme in the utility model embodiment will be described clearly and completely in combination with the drawings in the utility model embodiment.

[0031] Referring to Figures 1-7 The utility model discloses a functional fertilizer's high tower granulation screening machine, including inlet elbow 1, screening cylinder 2, material collecting groove 3, air pipe 4 and cambered sieve plate 5, the lower end of inlet elbow 1 is fixedly connected with joint 102, and the end, away from inlet elbow 1 of joint 102, is fixedly connected with the end of screening cylinder 2, and the lower part of screening cylinder 2 is fixedly connected with cambered sieve plate 5 in the through mode;

[0032] The higher end of inlet elbow 1 is connected with the conveying place (such as conveyer etc.) of fertilizer granule, and the lower end of inlet elbow 1 is connected with screening cylinder 2 through joint 102, so that the fertilizer granule can smoothly enter screening cylinder 2, and the fertilizer granule in screening cylinder 2 can contact cambered sieve plate 5 and be screened by the sieve hole on cambered sieve plate 5;

[0033] The outer periphery of the upper part of screening cylinder 2 is provided with two air pipes 4 that are symmetrically distributed, and the lower part of the periphery of each air pipe 4 is fixedly provided with a branch pipe 403 that penetrates screening cylinder 2 at equal intervals, and the bottom end of branch pipe 403 extends into the inner cavity of screening cylinder 2 and is fixedly provided with a jet head 404;

[0034] Air pipe 4 is connected with the external compressed air source (such as air compressor), compressed air enters branch pipe 403 and is sprayed from jet head 404, and jet head 404 is directed towards the fertilizer granule on cambered sieve plate 5, so as to blow the fertilizer granule towards the discharging end of screening cylinder 2, so that the fertilizer granule is quickly screened.

[0035] The upper and lower ports of inlet elbow 1 are in horizontal pipe state, the middle part of inlet elbow 1 is in inclined pipe state, and a plug valve 101 is further installed on the inclined pipe of the middle part of inlet elbow 1, and the plug valve 101 is located at the middle upper part of inlet elbow 1.

[0036] The amount of fertilizer sent into screening cylinder 2 from inlet elbow 1 is controlled by the opening size of plug valve 101, and the greater the opening of plug valve 101, the more the amount of fertilizer entering in the same time.

[0037] The end, away from joint 102 of screening cylinder 2, is fixedly provided with a discharging cloth bag 201, and the inner diameter of screening cylinder 2 is equal to that of the inlet hose, the design of discharging cloth bag 201 slows down the speed of large particle material when being discharged, so as to avoid that the large particle fertilizer is quickly discharged from the outlet of screening cylinder 2 and falls along the inner wall of discharging cloth bag 201.

[0038] The outer side of screening cylinder 2 outside cambered sieve plate 5 is fixedly provided with a material collecting groove 3, and the material collecting groove 3 completely covers screening cylinder 2, the inside of material collecting groove 3 is hollow, and the bottom of material collecting groove 3 is fixedly provided with equidistantly distributed discharge hoppers 301.

[0039] The design of material collecting groove 3 is used for covering the small particle fertilizer passing through cambered sieve plate 5, and the small particle fertilizer passing through cambered sieve plate 5 is finally discharged from discharge hoppers 301.

[0040] The jet heads 404 under the two air pipes 4 are staggered and downwardly inclined and blow air towards the discharge end of the screening cylinder 2.

[0041] The staggered arrangement of the jet heads 404 enables the waste material blown by the jet heads 404 to move in a wave-like manner on the arc-shaped screen plate 5, effectively increasing the screening stroke and the screening effect.

[0042] The outer arc surface of the arc-shaped screen plate 5 is on the same curved surface as the outer surface of the screening cylinder 2.

[0043] The two ends of the air pipe 4 are fixed with end heads 402, and the end heads 402 are fixed to the outer side of the screening cylinder 2. The air pipe 4 is further fixed with a connecting pipe 401 around the periphery thereof. The air pipe 4 is connected to an external air source through the connecting pipe 401, and the two ends of the air pipe 4 are fixed to the screening cylinder 2 through the end heads 402.

[0044] The specific working principle of the utility model is as follows: firstly, the higher end of the inlet bend pipe 1 is connected to the conveying position of the fertilizer particles, and the lower end of the inlet bend pipe 1 is connected to the screening cylinder 2 through the joint 102. The amount of fertilizer sent into the screening cylinder 2 from the inlet bend pipe 1 is controlled by controlling the opening size of the plug valve 101. The fertilizer particles entering the screening cylinder 2 will contact the arc-shaped screen plate 5 and be screened by the screen holes on the arc-shaped screen plate 5. The air pipe 4 is connected to an external air source through the connecting pipe 401. Compressed air enters the branch pipe 403 from the air pipe 4 and is sprayed from the jet heads 404. The jet heads 404 blow the fertilizer particles on the arc-shaped screen plate 5 towards the discharge end of the screening cylinder 2. The staggered arrangement of the jet heads 404 enables the waste material blown by the jet heads 404 to move in a wave-like manner on the arc-shaped screen plate 5, effectively increasing the screening stroke. Finally, the large-particle fertilizer is discharged from the outlet of the screening cylinder 2, enters the discharge cloth bag 201, and the design of the discharge cloth bag 201 slows down the speed of the large-particle material during discharge, slows down the falling along the inner wall of the discharge cloth bag 201, and the small-particle fertilizer passes through the arc-shaped screen plate 5 and is finally discharged from the discharge hopper 301 under the collecting tank 3.

[0045] The above is only the preferred embodiment of the utility model, and does not limit the utility model. Any modification, equivalent replacement, improvement of any modification, equivalent replacement, improvement of the technical solutions recorded in the foregoing embodiments, all belong to the protection scope of the utility model.

Claims

1. A functional fertilizer high tower granulation screening machine, comprising a feeding elbow (1), a screening cylinder (2), a material collecting tank (3), an air pipe (4) and an arc surface sieve plate (5), characterized in that: The lower end of the inlet elbow (1) is fixedly connected with a joint (102), and the end of the joint (102) away from the inlet elbow (1) is fixedly connected with an end of a screening cylinder (2), and the lower part of the screening cylinder (2) is fixedly penetrated with an arc surface sieve plate (5); The outer periphery of the upper part of the screening cylinder (2) is provided with two symmetrical air pipes (4), and the circumferential side of each air pipe (4) is fixedly provided with a branch pipe (403) penetrating the screening cylinder (2) at equal intervals, and the bottom end of the branch pipe (403) extends into the inner cavity of the screening cylinder (2) and is fixedly provided with a gas jet head (404).

2. The functional fertilizer prilling and screening machine according to claim 1, characterized in that: The upper and lower ports of the inlet elbow (1) are in a horizontal pipe state, the middle part of the inlet elbow (1) is in an inclined pipe state, and a plug valve (101) is further installed on the inclined pipe of the middle part of the inlet elbow (1), and the plug valve (101) is located at the middle upper part of the inlet elbow (1).

3. The functional fertilizer prilling and screening machine according to claim 1, characterized in that: The end of the screening cylinder (2) away from the joint (102) is fixedly provided with a discharge cloth bag (201), and the inner diameter of the screening cylinder (2) is equal to that of the inlet hose.

4. The functional fertilizer prilling and screening machine according to claim 1, characterized in that: The outer side of the screening cylinder (2) outside the arc surface sieve plate (5) is fixedly provided with a material collecting groove (3), and the material collecting groove (3) completely covers the screening cylinder (2), the material collecting groove (3) is hollow inside, and the bottom of the material collecting groove (3) is fixedly provided with equally distributed discharge hoppers (301).

5. The functional fertilizer prilling and screening machine according to claim 1, characterized in that: The gas jet heads (404) below the two air pipes (4) are staggered, and the gas jet heads (404) are downwardly inclined and blow air towards the discharge end of the screening cylinder (2).

6. A functional fertilizer prilling and screening machine according to claim 1, characterized in that: The outer arc surface of the arc surface sieve plate (5) is on the same curved surface as the outer surface of the screening cylinder (2).

7. The functional fertilizer prilling and screening machine according to claim 1, characterized in that: Both ends of the air pipe (4) are fixedly provided with end heads (402), and the end heads (402) are fixedly provided on the outer side of the screening cylinder (2), and the air pipe (4) is further fixedly penetrated with a connecting pipe (401).

Images