Compound fertilizer coating powder adding device

Abstract

The utility model relates to a compound fertilizer coating powder adding device. Comprising a full-closed large stock bin arranged underground, and the full-closed large stock bin is connected with a weighing type top buffering stock bin through a powder diaphragm pump; the bottom of the weighing type top buffering stock bin is connected with a weightless weighing conveying part arranged on the ground through a pneumatic gate valve and a flexible connecting pipeline; a plurality of supporting lugs are evenly distributed on the outer surface of the weighing type top buffering stock bin, weighing type sensors are arranged at the bottoms of the supporting lugs, and the weighing type top buffering stock bin is further provided with anti-bridging pieces. The device has the advantages that the design is reasonable, the safety of equipment and personnel is improved, the labor intensity is reduced, stable operation of the system is maintained, accurate blanking is realized, and the quality of final products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of compound fertilizer production, in particular to a compound fertilizer coated powder adding device. Background Art

[0002] At present, the process of adding coated powder of compound fertilizer is to use a forklift to lift the powder to a platform about 5 meters high. After receiving the material, the staff on duty use a blade to cut each bag of powder and pour it into the silo. Then the powder is transported to the wrapping machine through a screw conveyor for wrapping. The above operation mode has the following defects: 1. The forklift powder lifting operation is affected by the small platform space and is very easy to collide with the attached production equipment; and there is a risk of falling from a height and forklift injuries during the process of directing the loading. 2. The powder metering is controlled according to the operating frequency of the auger. The metering method is relatively extensive and cannot accurately achieve weight measurement; resulting in the final quality of the product cannot be guaranteed; 3. The addition operation mainly relies on manual labor, and the degree of mechanization is relatively low; the on-site personnel have high labor intensity and low work efficiency. Utility Model Content

[0003] The utility model aims to provide a compound fertilizer coated powder adding device to overcome the defects in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A compound fertilizer coated powder adding device comprises a fully enclosed large silo arranged below the ground, the fully enclosed large silo is connected to a weighing type top buffer silo through a powder diaphragm pump; the bottom of the weighing type top buffer silo is connected to a weightlessness weighing conveying part arranged on the ground through a pneumatic gate valve and a soft connection pipeline; the outer surface of the weighing type top buffer silo is evenly distributed with a plurality of lugs, the bottom of the lugs is provided with a weighing type sensor, and the weighing type top buffer silo is also provided with an anti-bridging member.

[0006] The beneficial effects of the utility model are as follows: the utility model realizes loading of coated powder without using a forklift by setting a fully enclosed large silo below the ground; thereby reducing the labor intensity of loading personnel while improving the safety of equipment and personnel; further, accurate loading can be achieved through the cooperation of a weighing top buffer silo and a powder diaphragm pump, and accurate backward feeding can be achieved through the cooperation of a pneumatic gate valve and a loss-in-weight weighing conveying part, thereby realizing accurate weight measurement and ensuring the quality of the final product.

[0007] Preferably, the loss-in-weight weighing and conveying section comprises a small weighing silo connected to a flexible connecting pipe, a screw conveyor connected to a coating powder using section is provided at the bottom of the small weighing silo, a weighing platform is provided at the bottom of the screw conveyor, and a plurality of loss-in-weight sensors are provided between the weighing platform and the ground.

[0008] Preferably, the anti-bridging component includes an air hammer arranged on the outer surface of the weighing top buffer silo.

[0009] Preferably, the anti-bridging component also includes an arch-breaking air butterfly arranged on the inner wall of the weighing top buffer silo.

[0010] Preferably, a bag dust collector is provided on the top of the weighing type top buffer silo.

[0011] Preferably, a cleaning window is provided on the weighing type top buffer silo.

[0012] The utility model also includes a PLC control system, wherein a signal input end of the PLC control system is connected to a weighing sensor and a weightlessness sensor, and a signal output end of the PLC control system is connected to a powder diaphragm pump, a pneumatic gate valve, an air hammer and an arch-breaking air butterfly.

[0013] A compound fertilizer coated powder adding device made according to the above scheme reduces the feeding height by setting a fully enclosed large silo below the ground and cooperating with a powder diaphragm pump, so as to achieve the purpose of feeding without using a forklift or lifting equipment. This purpose can not only improve the safety of on-site equipment and on-site personnel, but also effectively reduce the labor intensity of feeding personnel; at the same time, the utility model can achieve the characteristics of accurate feeding through the cooperation of the weighing top buffer silo and the powder diaphragm pump, and can achieve accurate backward feeding through the cooperation of the pneumatic gate valve and the weightlessness weighing conveying part, thereby achieving accurate measurement of weight and ensuring the quality of the final product; further, the PLC control system can monitor the weight of the coated powder inside the weighing top buffer silo and the weighing small silo in real time through the weighing sensor and the weightlessness sensor, so as to ensure the supply under the premise of accurately controlling its weight and maintain the stable operation of the entire equipment; the anti-bridging component can prevent the occurrence of bridging phenomenon inside the weighing top buffer silo; it has the advantages of reasonable design, improving the safety of equipment and personnel, reducing labor intensity, maintaining the stable operation of the system, achieving accurate unloading and ensuring the quality of the final product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 This is a control principle block diagram of the utility model.

[0016] In the figure: 1. Fully enclosed large silo; 2. Powder diaphragm pump; 3. Weighing top buffer silo; 4. Pneumatic gate valve; 5. Flexible connection pipe; 6. Support ear; 7. Weighing sensor; 8. Weighing small silo; 9. Screw conveyor; 10. Weighing platform; 11. Weight loss sensor; 12. Air hammer; 13. Arch-breaking air butterfly; 14. Bag dust collector; 15. Cleaning window; 16. PLC control system. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] Reference Figure 1 As shown, a compound fertilizer coated powder adding device comprises a fully enclosed large silo 1 arranged below the ground, the fully enclosed large silo 1 is connected to a weighing type top buffer silo 3 through a powder diaphragm pump 2; the bottom of the weighing type top buffer silo 3 is connected to a loss-in-weight weighing conveying part arranged on the ground through a pneumatic gate valve 4 and a soft connecting pipe 5; a plurality of lugs 6 are evenly distributed on the outer surface of the weighing type top buffer silo 3, a weighing sensor 7 is provided at the bottom of the lug 6, and the weighing type top buffer silo 3 is also provided with an anti-bridging member. The fully enclosed large silo 1 described in the utility model is arranged below the ground, and the feed port of the fully enclosed large silo 1 is arranged on the ground, thereby reducing the loading height to achieve the characteristic of convenient loading, and the coated powder is transported to the weighing type top buffer silo 3 (the highest point of the utility model) by the powder diaphragm pump 2, and the coated powder enters the weightlessness weighing conveying part at the bottom of the weighing type top buffer silo 3 by gravity, and supplies the coated powder to the subsequent process section; the above-mentioned arrangement can achieve the purpose of reducing labor intensity and facilitating loading; the powder diaphragm pump 2 and the weighing type top buffer silo 3 cooperate to achieve the characteristic of loading under the premise of precise weight control, wherein the bottom of the weighing sensor 7 in the weighing type top buffer silo 3 can be provided with a bracket or the floor of the second-floor factory building according to actual conditions; the weightlessness weighing conveying part is arranged on the ground, and it can achieve the characteristic of precise feeding through the cooperation of the pneumatic gate valve 4 and the weightlessness weighing conveying part. The weighing type top buffer silo 3 is provided with an anti-bridging device, which is mainly used to prevent the coated powder from forming a bridge inside the weighing type top buffer silo 3 and making it impossible to unload the material; the anti-bridging device can be achieved by vibrating the weighing type top buffer silo 3, or by spraying the internal weighing type top buffer silo 3.

[0019] Furthermore, the weight-loss weighing conveying section includes a weighing small silo 8 connected to the flexible connection pipe 5, a screw conveyor 9 connected to the coated powder using section is provided at the bottom of the weighing small silo 8, a weighing platform 10 is provided at the bottom of the screw conveyor 9, and a plurality of weight-loss sensors 11 are provided between the weighing platform 10 and the ground. The utility model can monitor the weight of the coated powder in the weight-loss weighing conveying section in real time through the weight-loss sensor 11, wherein the weighing small silo 8 is provided to temporarily store the coated powder to meet the characteristic that the screw conveyor 9 continuously conveys the coated powder to the subsequent section.

[0020] Furthermore, the anti-bridging member includes an air hammer 12 disposed on the outer surface of the weighing type top buffer silo 3. The air hammer 12 is preferably symmetrically arranged, and when the coating powder bridges, it generates vibration by hitting the weighing type top buffer silo 3, thereby achieving the characteristic of rapid material discharge.

[0021] Furthermore, the anti-bridging component also includes an arch-breaking air butterfly 13 arranged on the inner wall of the weighing top buffer silo 3.

[0022] Furthermore, a bag dust collector 14 is provided on the top of the weighing type top buffer silo 3. By providing the bag dust collector 14, dust can be removed inside the weighing type top buffer silo 3, and the coating powder can be recovered by pulse backflushing in the subsequent process.

[0023] Furthermore, a cleaning window 15 is provided on the weighing top buffer silo 3 .

[0024] Reference Figure 1-2As shown, the utility model further includes a PLC control system 16. The signal input end of the PLC control system 16 is connected to the weighing sensor 7 and the weightlessness sensor 11. The signal output end of the PLC control system 16 is connected to the powder diaphragm pump 2, the pneumatic gate valve 4, the air hammer 12 and the arch-breaking air butterfly 13. The utility model can be controlled manually or automatically. When automatic control is adopted, the weighing sensor 7 is used to detect the weight of the coated powder in the weighing top buffer silo 3, and a predetermined threshold value can be set. When the corresponding lower limit threshold is reached, the PLC control system 16 controls the powder diaphragm pump 2 to open, so that the coated powder in the fully enclosed large silo 1 enters the weighing top buffer silo 3. When the upper limit threshold is reached, the PLC control system 16 controls the powder diaphragm pump 2 to close. Similarly, the weightlessness sensor 11 is used to detect the weighing The weight of the coated powder in the small silo 8 can be determined, and a predetermined threshold can be set. When the corresponding lower limit threshold is reached, the PLC control system 16 controls the pneumatic gate valve 4 to open, so that the coated powder in the weighing top buffer silo 3 enters the weighing small silo 8. When the upper limit threshold is reached, the PLC control system 16 controls the closure; the pneumatic gate valve 4 is in the form of intermittent opening; when the pneumatic gate valve 4 is open and the weight of the coated powder in the weighing small silo 8 does not change, the PLC control system 16 controls the air hammer 12 and / or the arch-breaking air butterfly 13 to open.

[0025] The working principle of the utility model is as follows: a fully enclosed large silo 1 is arranged below the ground, and a feed port of the fully enclosed large silo 1 is arranged on the ground, and the coated powder is manually put into the fully enclosed large silo 1 through the feed port, and the coated powder in the fully enclosed large silo 1 is transported to the weighing top buffer silo 3 through the powder diaphragm pump 2, and the coated powder enters the weightless weighing conveying part at the bottom of the weighing top buffer silo 3 by gravity, and supplies the coated powder to the subsequent work section; the above-mentioned operation process is a fully enclosed conveying method, which has the characteristics of saving coated powder and preventing dust pollution; its conveying process can be controlled manually or automatically; taking automatic control as an example: the weighing sensor 7 is used to detect the weight of the coated powder in the weighing top buffer silo 3, and a predetermined threshold value can be set. When the corresponding threshold value is reached, the coated powder is When the corresponding lower limit threshold is reached, the PLC control system 16 controls the powder diaphragm pump 2 to open, so that the coated powder in the fully enclosed large silo 1 enters the weighing top buffer silo 3. When the upper limit threshold is reached, the PLC control system 16 controls the powder diaphragm pump 2 to close. Similarly, the weightlessness sensor 11 is used to detect the weight of the coated powder in the weighing small silo 8, and a predetermined threshold can be set. When the corresponding lower limit threshold is reached, the PLC control system 16 controls the pneumatic gate valve 4 to open, so that the coated powder in the weighing top buffer silo 3 enters the weighing small silo 8. When the upper limit threshold is reached, the PLC control system 16 controls to close. The pneumatic gate valve 4 is in the form of intermittent opening. When the pneumatic gate valve 4 is open and the weight of the coated powder in the weighing small silo 8 does not change, the PLC control system 16 controls the air hammer 12 and / or the arch-breaking air butterfly 13 to open. When it is manually controlled, the weighing sensor 7 is used to detect the weight of the coated powder in the weighing top buffer silo 3, and the weightlessness sensor 11 is used to detect the weight of the coated powder in the weighing small silo 8. When the value displayed by the weighing sensor 7 is small, the powder diaphragm pump 2 is controlled to be opened, and when the value displayed by the weightlessness sensor 11 is small, the pneumatic gate valve 4 is controlled to be opened; when the value displayed by the weightlessness sensor 11 is still small after the pneumatic gate valve 4 is opened, the air hammer 12 and / or the arch-breaking air butterfly 13 are opened to destroy the bridging structure inside the weighing top buffer silo 3, so as to realize smooth feeding to the subsequent process section; it has the advantages of reasonable design, improved equipment and personnel safety, reduced labor intensity, stable operation of the maintenance system, accurate material unloading and guarantee of final product quality.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compound fertilizer coated powder adding device, characterized in that: The adding device comprises a fully enclosed large material bin (1) arranged below the ground, and the fully enclosed large material bin (1) is connected to a weighing type top buffer material bin (3) via a powder diaphragm pump (2); The bottom of the weighing type top buffer silo (3) is connected to a weightlessness weighing conveying part arranged on the ground through a pneumatic gate valve (4) and a flexible connection pipe (5); The outer surface of the top buffer silo (3) is evenly distributed with a plurality of lugs (6), the bottom of the lugs (6) is provided with a weighing sensor (7), and the top buffer silo (3) is also provided with an anti-bridging member.

2. A compound fertilizer coated powder adding device according to claim 1, characterized in that: The weight loss weighing and conveying section comprises a small weighing silo (8) connected to a flexible connection pipe (5); a screw conveyor (9) connected to a coating powder using section is provided at the bottom of the small weighing silo (8); a weighing platform (10) is provided at the bottom of the screw conveyor (9); and a plurality of weight loss sensors (11) are provided between the weighing platform (10) and the ground.

3. A compound fertilizer coated powder adding device according to claim 1, characterized in that: The anti-bridging component comprises an air hammer (12) arranged on the outer surface of a weighing type top buffer silo (3).

4. A compound fertilizer coated powder adding device according to claim 3, characterized in that: The anti-bridging component also includes an arch-breaking air butterfly (13) arranged on the inner wall of the weighing-type top buffer silo (3).

5. A compound fertilizer coated powder adding device according to claim 1, characterized in that: A bag dust collector (14) is provided on the top of the weighing type top buffer silo (3).

6. A compound fertilizer coated powder adding device according to claim 1, characterized in that: The weighing type top buffer silo (3) is provided with a cleaning window (15).

7. A compound fertilizer coated powder adding device according to claim 1, characterized in that: The system also includes a PLC control system (16), wherein a signal input end of the PLC control system (16) is connected to a weighing sensor (7) and a weight loss sensor (11), and a signal output end of the PLC control system (16) is connected to a powder diaphragm pump (2), a pneumatic gate valve (4), an air hammer (12) and a broken arch air butterfly (13).

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