Anti-blocking device of chemical fertilizer screening machine

Abstract

The utility model discloses an anti-blocking device of a chemical fertilizer screening machine, which belongs to the technical field of chemical fertilizer production equipment, and comprises a screening box and a feed hopper arranged on the screening box and used for adding materials, as well as a support strip and a guide strip which are fixed in the screening box, the inclined rubbing hopper is arranged between the supporting strip and the guide strip in a sliding mode, the push rod is fixed to the inclined rubbing hopper and used for pushing the inclined rubbing hopper to move, the two ends of the push rod penetrate through two limiting holes formed in the screening box respectively, and the reciprocating driving piece is used for driving the push rod to do reciprocating linear motion. The inclined rubbing bucket and the vertical rubbing plate are matched for use, so that a rubbing area with a wide upper part and a narrow lower part is formed between the inclined rubbing bucket and the vertical rubbing plate so as to facilitate automatic downward movement of caked chemical fertilizer under the action of gravity, and the caked chemical fertilizer is rubbed to be scattered by matching with the inclined rubbing bucket which transversely moves in a reciprocating manner, so that the effect of protecting the completeness of chemical fertilizer particles is achieved; the influence on the yield of chemical fertilizer particle production is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fertilizer production equipment, in particular to an anti-blocking device for a fertilizer screening machine. Background Art

[0002] During the production process of fertilizers, they need to be granulated for later packaging, transportation and use. Some powder will be mixed in the granulated fertilizer particles, and before packaging, the fertilizer particles will accumulate and clump for a while, so they need to be screened to remove the powder, and the agglomerated fertilizers need to be broken up and screened out. During the screening process, the agglomerated fertilizers on the sieve plate will affect the feeding of other fertilizer particles. The anti-blocking device of the existing screening machine is provided with a crushing roller near the lower opening of the hopper in the screening machine, and the agglomerated fertilizers are crushed by the rapidly rotating crushing roller, which effectively prevents the agglomeration on the sieve plate from affecting the feeding of other fertilizer particles. However, the rotating crushing roller will also crush some qualified fertilizer particles into powder, thereby affecting the qualified rate of fertilizer particle production.

[0003] The existing patent application number: 202320520155.2 discloses a granular fertilizer screening machine with an anti-clogging screen. The device is provided with a rotating rod below the feed hopper and crushing blades are staggered on the rotating rod. The rotating crushing blades hit the falling fertilizer to break the fertilizer agglomerates, thereby preventing the fertilizer agglomerates from clogging the filter screen and affecting the feeding of the fertilizer on the filter screen. In the above-mentioned prior art, the device still has the above-mentioned technical problems during operation. Utility Model Content

[0004] The utility model aims to provide an anti-blocking device for a fertilizer screening machine to solve the problem in the above background technology that a rotating crushing roller is easy to crush conventional fertilizer particles, thus affecting the qualified rate of fertilizer particle production.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an anti-blocking device for a fertilizer screening machine, comprising a screening box and a feeding hopper for adding materials arranged on the screening box. The anti-blocking device for the fertilizer screening machine also includes:

[0007] Support bars and guide bars are fixed in the screening box.

[0008] An oblique rubbing bucket is slidably arranged between the support bar and the guide bar.

[0009] A push rod is fixed on the oblique rubbing bucket for pushing the oblique rubbing bucket to move, and two ends of the push rod respectively pass through two limiting holes arranged on the screening box.

[0010] A reciprocating drive member used to drive the push rod to reciprocate linear motion.

[0011] A vertical rubbing board is fixed in the screening box, and the vertical rubbing board and the oblique rubbing bucket together form a squeezing area for rubbing and spreading the fertilizer.

[0012] A plurality of protrusions are fixed on the opposite surfaces of the vertical rubbing plate and the oblique rubbing bucket for increasing friction.

[0013] Furthermore, the upper edges of the oblique rubbing bucket and the vertical rubbing board are aligned with the lower edge of the feed hopper, and the length of the oblique rubbing bucket is smaller than the length of the vertical rubbing board.

[0014] Furthermore, the length of the push rod is greater than the length difference between the oblique rubbing bucket and the feed hopper, and the width difference between the oblique rubbing bucket and the screening box is equal to the length difference between the oblique rubbing bucket and the feed hopper.

[0015] Furthermore, the shape of the protrusion is a square prism, and the surface opposite to the vertical rubbing board in the oblique rubbing bucket is an inclined surface.

[0016] Furthermore, the anti-blocking device of the fertilizer screening machine also includes:

[0017] A partition plate is fixed in the screening box.

[0018] A step-by-step screening plate is hingedly connected to the screening box and is used for screening fertilizer particles. One side of the step-by-step screening plate passes through a discharge port for discharging fertilizers on the screening box.

[0019] The powder screen and the particle screen are fixed on the step-by-step screening plate, and the powder screen and the particle screen are located on both sides above the partition plate.

[0020] A vibration motor is fixed on the step-by-step screening plate to drive the vibration thereof.

[0021] A bow-shaped support leg is hinged at the boundary of the step-by-step screening plate and is used for elastically supporting the step-by-step screening plate, and the remaining end of the bow-shaped support leg is connected to the inner wall of the screening box.

[0022] Furthermore, the powder screen is located below the inclined kneading bucket, and the particle screen is located between the powder screen and the discharge port.

[0023] Furthermore, the reciprocating drive member comprises:

[0024] A driving motor is fixed on the screening box.

[0025] A support plate is fixed on the output shaft of the driving motor.

[0026] A strip-shaped collar is fixed to one end surface of the push rod.

[0027] A pushing block is fixed on the supporting plate, and one end of the pushing block is slidably sleeved on the strip ring.

[0028] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0029] 1. The utility model uses the oblique rubbing bucket and the vertical rubbing board in coordination, so that a rubbing area with a width at the top and a narrowness at the bottom is formed between the oblique rubbing bucket and the vertical rubbing board, so that the agglomerated fertilizer automatically moves downward under the action of gravity, and the agglomerated fertilizer is rubbed and dispersed in coordination with the oblique rubbing bucket that moves back and forth horizontally, so as to achieve the effect of protecting the integrity of the fertilizer particles and avoid affecting the qualified rate of the fertilizer particle production;

[0030] 2. The utility model realizes efficient rubbing and breaking up of fertilizer agglomerates by evenly arranging a number of prism-shaped protrusions on the opposite surfaces of the oblique rubbing bucket and the vertical rubbing plate and coordinating the lateral relative movement between the two. The prism-shaped protrusions will form wide grooves between two adjacent protrusions, avoiding the problem of fertilizer particles getting stuck inside the grooves, which would affect the rubbing and breaking up of fertilizer agglomerates and improve the screening effect of fertilizer particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is an axonometric drawing of the utility model;

[0032] Figure 2 It is the rear perspective axonometric drawing of the utility model;

[0033] Figure 3 It is a structural schematic diagram of the reciprocating drive member in the utility model;

[0034] Figure 4 It is a half-section axonometric drawing in the utility model;

[0035] Figure 5 for Figure 4 main view.

[0036] In the figure: 1. Screening box; 2. Feed hopper; 3. Limiting hole; 4. Push rod; 5. Support bar; 6. Reciprocating drive member; 61. Drive motor; 62. Support plate; 63. Push block; 64. Strip ring; 7. Oblique rubbing bucket; 8. Guide bar; 9. Vertical rubbing plate; 10. Step-by-step screening plate; 11. Discharge port; 12. Vibration motor; 13. Powder screen; 14. Particle screen; 15. Partition plate; 16. Bow-shaped support leg; 17. Bump. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0038] like Figures 1 to 5As shown, an anti-blocking device for a fertilizer screening machine comprises a screening box 1 and a feeding hopper 2 for adding materials arranged on the screening box 1, and the anti-blocking device for the fertilizer screening machine also comprises:

[0039] The support bars 5 and the guide bars 8 are fixed in the screening box 1 .

[0040] The oblique rubbing bucket 7 is slidably arranged between the support bar 5 and the guide bar 8. The support bar 5 and the guide bar 8 are used to support, limit and constrain the oblique rubbing bucket 7 so that it can only perform linear reciprocating motion between the support bar 5 and the guide bar 8.

[0041] A push rod 4 is fixed on the oblique rubbing bucket 7 for pushing the oblique rubbing bucket 7 to move, and two ends of the push rod 4 pass through two limiting holes 3 provided on the screening box 1 respectively.

[0042] A reciprocating driving member 6 is used to drive the push rod 4 to reciprocate linearly.

[0043] The vertical rubbing board 9 fixed in the screening box 1, the vertical rubbing board 9 and the oblique rubbing bucket 7 together form a squeezing and rubbing area for rubbing and dispersing the fertilizer. The squeezing and rubbing area is in the shape of a prism that is wide at the top and small at the bottom, so that the fertilizer agglomerated can fall into it. With the gravity of the fertilizer agglomerated, the fertilizer can automatically move downward during the rubbing and dispersing process, and can always maintain a certain pressure between the fertilizer agglomerated and the vertical rubbing board 9 and the oblique rubbing bucket 7, so as to continuously rub the fertilizer agglomerated to loosen it, avoid crushing a large number of fertilizer particles, which affects the qualified rate of fertilizer particle production, and can also reduce the probability of crushed fertilizer particles clogging the sieve holes.

[0044] A plurality of protrusions 17 are fixed on the opposite surfaces of the vertical rubbing plate 9 and the oblique rubbing bucket 7 for increasing the friction force.

[0045] In this embodiment, the upper edges of the inclined rubbing bucket 7 and the vertical rubbing board 9 are aligned with the lower edges of the feed hopper 2, and the length of the inclined rubbing bucket 7 is smaller than the length of the vertical rubbing board 9. This design facilitates the agglomerated fertilizer and normal fertilizer particles to smoothly enter the squeezing and rubbing area, and when the inclined rubbing bucket 7 reciprocates, the lower opening of the feed hopper 2 is always located within the range of the top opening of the inclined rubbing bucket 7, ensuring that the fertilizer in the feed hopper 2 can accurately fall into the inclined rubbing bucket 7, and in the process of rubbing the agglomerated fertilizer particles, the normal fertilizer particles and the scattered fertilizer particles can smoothly fall into the screening box 1.

[0046] In this embodiment, the length of the push rod 4 is greater than the difference in length between the oblique rubbing bucket 7 and the feed hopper 2, and the width difference between the oblique rubbing bucket 7 and the screening box 1 is equal to the length difference between the oblique rubbing bucket 7 and the feed hopper 2. With this design, when the reciprocating drive member 6 drives the push rod 4 to push the oblique rubbing bucket 7 to make a linear reciprocating motion, the two ends of the push rod 4 can be prevented from escaping from the limiting hole 3 and affecting the normal operation of the oblique rubbing bucket 7. When the oblique rubbing bucket 7 reciprocates, the lower mouth of the feed hopper 2 is always located within the range of the top opening of the oblique rubbing bucket 7, so that the fertilizer can always fall into the squeezing area, avoiding the agglomerated fertilizer from falling directly into the screening box 1, which affects the screening effect and mixing efficiency of the fertilizer.

[0047] In this embodiment, the shape of the protrusion 17 is a square prism, and the opposite surface of the oblique rubbing bucket 7 and the vertical rubbing plate 9 is an inclined surface. The protrusions 17 are evenly distributed on the opposite surfaces of the oblique rubbing bucket 7 and the vertical rubbing plate 9, and the grooves formed by the two adjacent rows or columns of protrusions 17 are wide on the outside and narrow on the inside, which is beneficial for the fertilizer particles to have enough space to fall when the agglomerated fertilizer is rubbed apart, thereby avoiding the fertilizer particles from being blocked in the groove and affecting the rubbing effect of the agglomerated fertilizer.

[0048] In this embodiment, the anti-blocking device of the fertilizer screening machine also includes:

[0049] A partition plate 15 fixed in the screening box 1 .

[0050] A step-by-step screening plate 10 for screening fertilizer particles is hingedly connected to the screening box 1 , and one side of the step-by-step screening plate 10 passes through a discharge port 11 provided on the screening box 1 for discharging fertilizer.

[0051] The powder screen 13 and the particle screen 14 are fixed on the step-by-step screening plate 10 , and the powder screen 13 and the particle screen 14 are located on both sides above the partition plate 15 .

[0052] A vibration motor 12 is fixed on the step-by-step screening plate 10 to drive the vibration thereof.

[0053] A bow-shaped support leg 16 is hinged at the boundary of the step-by-step screening plate 10 for elastically supporting the step-by-step screening plate 10, and the remaining end of the bow-shaped support leg 16 is connected to the inner wall of the screening box 1. When the vibration motor 12 is running, it will drive the step-by-step screening plate 10 to perform high-frequency deflection vibration with its hinge as the deflection axis. In this process, the bow-shaped support leg 16 will also repeatedly undergo elastic deformation, thereby maintaining the vibration screening stability of the step-by-step screening plate 10, improving the screening efficiency of fertilizer particles, and effectively preventing the fertilizer particles from clogging the sieve holes on the step-by-step screening plate 10.

[0054] In this embodiment, the powder screen 13 is located below the inclined rubbing bucket 7, and the particle screen 14 is located between the powder screen 13 and the discharge port 11. With this design, the powder in the fertilizer can be screened out first to improve the quality of the fertilizer particles, and then the qualified fertilizer particles can be screened out through the particle screen 14, and the unqualified particles can be screened out and recycled. The partition plate 15 is used to divide the interior of the screening box 1 into two parts, which respectively hold the screened fertilizer powder and the unqualified fertilizer particles, and avoid interference between the powder and the unqualified fertilizer particles, which affects the recycling effect.

[0055] In this embodiment, the reciprocating drive member 6 includes:

[0056] A driving motor 61 is fixed on the screening box 1 .

[0057] A support plate 62 is fixed on the output shaft of the driving motor 61 .

[0058] A strip-shaped collar 64 is fixed to one end surface of the push rod 4 .

[0059] A pushing block 63 is fixed on the supporting plate 62 , and one end of the pushing block 63 is slidably sleeved on the strip ring 64 .

[0060] After the driving motor 61 is started, its output end will drive the supporting plate 62 and the pushing block 63 to rotate synchronously, and make the pushing block 63 perform a relative linear reciprocating movement in the vertical direction within the strip ring 64, and drive the push rod 4 to perform a reciprocating linear movement along its length direction, so as to push the inclined rubbing bucket 7 to perform a synchronous linear reciprocating movement, so that a relative movement is formed between the inclined rubbing bucket 7 and the vertical rubbing plate 9, and cooperate with the shear force formed by the protrusions 17 on the opposite surfaces of the two and the surface of the agglomerated fertilizer and the gravity of the agglomerated fertilizer, so that the protrusions 17 can quickly rub the agglomerated fertilizer from the outside to the inside, and reduce the damage of the protrusions 17 to the fertilizer particles, thereby improving the qualified rate of the fertilizer particles after screening.

[0061] The above description is only the preferred embodiment of the utility model, and the parts not described in the utility model can be implemented by adopting or drawing on existing technologies. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. The changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the utility model should also fall within the protection scope of the utility model.

Claims

1. An anti-blocking device for a fertilizer screening machine, comprising a screening box (1) and a feeding hopper (2) provided on the screening box (1) for adding materials, characterized in that: The anti-blocking device of the fertilizer screening machine also includes: A support bar (5) and a guide bar (8) fixed in the screening box (1); An oblique rubbing bucket (7) slidably disposed between the support bar (5) and the guide bar (8); A push rod (4) fixed on the inclined rubbing bucket (7) for pushing the inclined rubbing bucket (7) to move, wherein two ends of the push rod (4) respectively pass through two limiting holes (3) provided on the screening box (1); A reciprocating driving member (6) for driving the push rod (4) to perform reciprocating linear motion; A vertical rubbing board (9) fixed in the screening box (1), wherein the vertical rubbing board (9) and the oblique rubbing bucket (7) together form a squeezing area for rubbing and spreading the fertilizer; A plurality of protrusions (17) are fixed on the opposite surfaces of the vertical rubbing board (9) and the oblique rubbing bucket (7) for increasing friction.

2. The anti-clogging device for a fertilizer screening machine according to claim 1, characterized in that: The upper edges of the oblique rubbing bucket (7) and the vertical rubbing plate (9) are aligned with the lower edge of the feed hopper (2), and the length of the oblique rubbing bucket (7) is less than the length of the vertical rubbing plate (9).

3. The anti-clogging device for a fertilizer screening machine according to claim 2, characterized in that: The length of the push rod (4) is greater than the difference in length between the oblique rubbing bucket (7) and the feed hopper (2), and the difference in width between the oblique rubbing bucket (7) and the inside of the screening box (1) is equal to the difference in length between the oblique rubbing bucket (7) and the feed hopper (2).

4. The anti-clogging device for a fertilizer screening machine according to claim 3, characterized in that: The shape of the protrusion (17) is a square prism, and the surface of the oblique rubbing bucket (7) opposite to the vertical rubbing board (9) is an inclined surface.

5. The anti-clogging device for a fertilizer screening machine according to claim 4, characterized in that: The anti-blocking device of the fertilizer screening machine also includes: A partition plate (15) fixed inside the screening box (1); A step-by-step screening plate (10) hingedly connected to the screening box (1) for screening fertilizer particles, one side of the step-by-step screening plate (10) passing through a discharge port (11) provided on the screening box (1) for discharging fertilizer; A powder screen (13) and a particle screen (14) fixed on the step-by-step screening plate (10), wherein the powder screen (13) and the particle screen (14) are located on both sides above the partition plate (15); A vibration motor (12) fixed on the step-by-step screening plate (10) for driving the vibration thereof; A bow-shaped support leg (16) is hinged at the boundary of the step-by-step screening plate (10) for elastically supporting the step-by-step screening plate (10), and the remaining end of the bow-shaped support leg (16) is connected to the inner wall of the screening box (1).

6. The anti-clogging device for a fertilizer screening machine according to claim 5, characterized in that: The powder screen (13) is located below the inclined kneading bucket (7), and the particle screen (14) is located between the powder screen (13) and the discharge port (11).

7. The anti-clogging device for a fertilizer screening machine according to claim 6, characterized in that: The reciprocating drive member (6) comprises: A driving motor (61) fixed to the screening box (1); A support plate (62) fixed on the output shaft of the drive motor (61); A strip-shaped collar (64) fixed to one end surface of the push rod (4); A pushing block (63) is fixed on the supporting plate (62), and one end of the pushing block (63) is slidably sleeved on the strip ring (64).

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