Accurate weighing device for fertilizer production raw materials

Abstract

The utility model belongs to the field of water-soluble fertilizer production, and discloses a fertilizer production raw material accurate weighing device which comprises a supporting assembly used for weighing and dumping raw materials and further comprises a bearing assembly installed on the supporting assembly and used for bearing, weighing and discharging the raw materials, and a discharging assembly used for sequentially discharging coarse materials and fine materials is arranged above the bearing assembly. The bearing assembly comprises a material box, a pouring opening is formed in one side of the material box, and a scraping mechanism used for pushing raw materials in a reciprocating mode is arranged in the material box. The discharging assembly comprises a storage box, a coarse discharging mechanism and a fine discharging mechanism are arranged at the bottom of the storage box side by side, and the discharging speed of the coarse discharging mechanism is five times or above that of the fine discharging mechanism. According to the precise weighing device for the fertilizer production raw materials, rapid filling is conducted through the coarse discharging mechanism (5 times of speed) to be close to a target value, then the fine discharging mechanism is switched for fine adjustment, inertial errors are remarkably reduced, the problem that traditional single-speed discharging is prone to excess is solved, and precision is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water -soluble fertilizer production field, especially be related to a fertilizer production raw material precision weighing device. BACKGROUND

[0002] Fertilizer production raw material precision weighing is the key link in modern chemical fertilizer manufacturing process, directly influences product quality, nutrient allocation and production efficiency. Through the combination of high-precision weighing equipment and automatic control system, the standardization and data management of raw material feeding can be realized. In the production process of compound fertilizer, the ratio of basic elements such as nitrogen, phosphorus, potassium and various trace elements needs to strictly follow the formula requirements. Electronic batching scale is adopted to cooperate with PLC control system, and the weighing accuracy of ±0.1% can be achieved. The sensor collects weight signals in real time, and the feeding device is dynamically adjusted through PID algorithm to avoid overage phenomenon.

[0003] The utility model discloses a kind of macroelement water-soluble fertilizer automatic batching devices of CN219559472U, including batching bin, batching bin top is equipped with storage barrel, and electronic control valve is equipped in the discharge port of storage barrel bottom end;The weight of processing raw materials in the drawer is inducted by gravity sensor, and when the weight of processing raw materials is inducted to reach preset threshold, electronic control valve is closed and cylinder is driven to tilt and drop the opening side of drawer, so that each processing raw material can be automatically accurately weighed before mixing batching, the amount of each raw material is conveniently controlled, and the batching quality of macroelement water-soluble fertilizer is ensured, and the first motor drives stirring shaft to drive stirring rod rotation, and cooperates with the second motor to drive concave stirring blade rotation, so that each processing raw material is fully mixed, compared with traditional structure single stirring assembly, higher efficiency, better effect, ensure batching efficiency, with higher practicality.

[0004] But the above patent only relies on single electronic control valve to control the discharge of raw material, and the opening is small, which is easy to slow down the discharge, and the opening is large, which is difficult to guarantee the accuracy of discharge, greatly reduces the convenience of discharge, and the weighed raw material only relies on inclination to automatically fall, which is easy to cause part of raw material to adhere to the bottom surface of drawer, causing incomplete discharge, which affects the accuracy of discharge, so a new device needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of fertilizer production raw material precision weighing device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The application discloses a fertilizer production raw material precise weighing device, which comprises a supporting assembly for weighing and pouring raw materials, a supporting assembly for supporting raw material weighing and discharging is arranged on the supporting assembly, and a discharging assembly for sequentially discharging raw materials from coarse to fine is arranged above the supporting assembly.

[0008] Further, the supporting assembly comprises a rack body, a flap is rotatably arranged on one side of the rack body, a telescopic air cylinder is arranged between the bottom surface of the flap and the side wall of the rack body, and a gravity sensor is fixedly arranged on the surface of the flap.

[0009] Further, the flap is provided with a rotating shaft at one end close to the rack body, and the flap is rotatably connected with the rack body through the rotating shaft.

[0010] Further, the scraping mechanism comprises two straight linear guides which are symmetrically arranged on the inner wall of the material box, a linear motor is arranged on the straight linear guide, a fixed seat is arranged on the linear motor, and a scraper is fixedly arranged between the two fixed seats.

[0011] Further, the material box is made of 304 stainless steel, and the scraper is made of polypropylene.

[0012] Further, the coarse discharging mechanism comprises a first vertical pipe, a first horizontal pipe is arranged at the bottom end of the first vertical pipe, a first motor is arranged at the rear end of the first horizontal pipe, and a first spiral blade is arranged in the first horizontal pipe; the fine discharging mechanism comprises a second vertical pipe, a second horizontal pipe is arranged at the bottom end of the second vertical pipe, a second motor is arranged at the rear end of the second horizontal pipe, and a second spiral blade is arranged in the second horizontal pipe.

[0013] Further, the first vertical pipe and the second vertical pipe are connected with the storage box through horn-shaped cone covers.

[0014] Compared with the prior art, the application has the beneficial effects that:

[0015] 1. The coarse discharging mechanism (5 times speed) is used to quickly fill the target value, and then the fine discharging mechanism is switched to finely adjust, so that the inertial error is significantly reduced, the problem that the traditional single-speed discharging is easy to exceed the target value is solved, the precision is significantly improved, the weight of the material box is dynamically monitored and is linked with an upper computer to realize closed-loop control, and it is ensured that the weighing result is highly consistent with the set value.

[0016] 2. When the material box is tilted to discharge material, the polypropylene scraper is driven by a linear motor to move back and forth along the guide rail, thoroughly removing the raw materials adhering to the box (especially for easily sticky fertilizers), avoiding residue that may cause batch-to-batch contamination or weighing errors; the 304 stainless steel material box is corrosion resistant, and the polypropylene scraper has both strength and elasticity, protecting the container surface while ensuring the scraping effect.

[0017] 3. No manual intervention is required throughout the entire process from feeding, weighing to discharging. The telescopic cylinder automatically flips the material box, and the linear motor controls the scraping, which greatly reduces the intensity of manual operation and human error. The coarse / fine discharge mechanism works together to shorten the weighing time, which is especially suitable for large-scale continuous production scenarios, and the efficiency is more than 30% higher than that of traditional weighing equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a precise weighing device for fertilizer production raw materials as described in this utility model;

[0019] Figure 2 This is a schematic diagram of the support component of the precision weighing device for fertilizer production raw materials described in this utility model;

[0020] Figure 3 This is a schematic diagram of the support component of the precision weighing device for fertilizer production raw materials described in this utility model;

[0021] Figure 4 This is an enlarged view of point A of the precision weighing device for fertilizer production raw materials described in this utility model;

[0022] Figure 5 This is a schematic diagram of the feeding component of a precision weighing device for fertilizer production raw materials according to this utility model;

[0023] Figure 6 This is a front view of the feeding component of a precision weighing device for fertilizer production raw materials as described in this utility model.

[0024] In the attached drawings, the following are the reference numerals: 101, frame; 102, flap; 103, rotating shaft; 104, gravity sensor; 105, telescopic cylinder; 201, material box; 202, tilting spout; 203, linear guide rail; 204, scraper; 205, linear motor; 206, fixed base; 301, storage bin; 302, first vertical pipe; 303, first horizontal pipe; 304, first motor; 305, first spiral blade; 306, second vertical pipe; 307, second horizontal pipe; 308, second motor; 309, second spiral blade. Detailed Implementation

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Please refer to Figures 1-6 The application discloses a fertilizer production raw material precise weighing device, which comprises a supporting assembly for weighing and pouring raw materials, a supporting assembly for supporting raw materials and discharging the supporting assembly, and a discharging assembly arranged above the supporting assembly for sequentially discharging raw materials from coarse to fine.

[0027] In the embodiment, the supporting assembly comprises a rack body 101, a flap 102 rotatably installed on one side of the rack body 101, an extension cylinder 105 installed between the bottom surface of the flap 102 and the side wall of the rack body 101, and a gravity sensor 104 fixedly installed on the surface of the flap 102; the flap 102 is provided with a rotating shaft 103 close to one end of the rack body 101, and the flap 102 is rotatably connected to the rack body 101 through the rotating shaft 103; the gravity sensor 104 collects weight information and transmits the weight information to an upper computer for control; after weighing, the rack body 101 supports the extension cylinder 105 to retract, and the flap 102 is rotated around the rotating shaft 103, so that the material box 201 is inclined.

[0028] In the embodiment, the supporting assembly comprises a material box 201, the material box 201 is provided with a pouring opening 202 on one side, and the material box 201 is provided with a scraping mechanism for reciprocating and pushing raw materials; the scraping mechanism comprises two straight linear guides 203 symmetrically installed on the inner wall of the material box 201, a linear motor 205 installed on the straight linear guides 203, a fixed seat 206 installed on the linear motor 205, and a scraper 204 fixedly installed between the two fixed seats 206; the material box 201 is made of 304 stainless steel, and the scraper 204 is made of polypropylene material; the material box 201 contains raw materials, the gravity sensor 104 collects weight information, after weighing, the material box 201 is inclined, the raw materials in the material box 201 are discharged from the pouring opening 202, the scraper 204 between the two fixed seats 206 is moved along the straight linear guides 203 under the driving of the linear motor 205, the raw materials adhered in the material box 201 are scraped and pushed out, and the raw materials are precisely weighed and discharged.

[0029] In this embodiment: the blanking assembly comprises a storage box 301, the bottom of the storage box 301 is provided with a coarse discharging mechanism and a fine discharging mechanism side by side, the discharging speed of the coarse discharging mechanism is more than five times the discharging speed of the fine discharging mechanism; the coarse discharging mechanism comprises a first vertical pipe 302, the bottom end of the first vertical pipe 302 is provided with a first horizontal pipe 303, the rear end of the first horizontal pipe 303 is installed with a first motor 304, and the first horizontal pipe 303 is provided with a first spiral blade 305; the fine discharging mechanism comprises a second vertical pipe 306, the bottom end of the second vertical pipe 306 is provided with a second horizontal pipe 307, the rear end of the second horizontal pipe 307 is installed with a second motor 308, and the second horizontal pipe 307 is provided with a second spiral blade 309; the first vertical pipe 302 and the second vertical pipe 306 are connected with the storage box 301 through the horn-shaped cone cover respectively; the raw materials are poured into the storage box 301, the raw materials flow into the first horizontal pipe 303 through the first vertical pipe 302 and flow into the second horizontal pipe 307 through the second vertical pipe 306 under the action of gravity, the first horizontal pipe 303 supports the first motor 304 to drive the first spiral blade 305 to rotate, pushes the raw materials to move along the first horizontal pipe 303 and discharges, and falls into the material box 201 quickly, the second horizontal pipe 307 supports the second motor 308 to drive the second spiral blade 309 to rotate, pushes the raw materials to move along the second horizontal pipe 307 and discharges, and falls into the material box 201 slowly.

[0030] Working principle: the raw materials are poured into the storage box 301, the raw materials flow into the first horizontal pipe 303 through the first vertical pipe 302 and flow into the second horizontal pipe 307 through the second vertical pipe 306 under the action of gravity, when the weighing starts, the first horizontal pipe 303 supports the first motor 304 to drive the first spiral blade 305 to rotate, pushes the raw materials to move along the first horizontal pipe 303 and discharges, and falls into the material box 201 quickly, the gravity sensor 104 collects the weight information of the material box 201 and transmits it to the upper computer, when the weight approaches the set weight, the first motor 304 stops, the second horizontal pipe 307 supports the second motor 308 to drive the second spiral blade 309 to rotate, pushes the raw materials to move along the second horizontal pipe 307 and discharges, and falls into the material box 201 slowly, until the weight of the material box 201 collected by the gravity sensor 104 reaches the set weight, the second motor 308 stops, and the weighing is completed, and then the rack body 101 supports the retracting cylinder 105 to retract, pulls the flap 102 to rotate around the pivot 103 as the center, inclines the material box 201, discharges the raw materials in the material box 201 from the pouring opening 202, at the same time, the linear motor 205 drives the scraper 204 between the fixed seats 206 to move along the linear guide rail 203, and the raw materials adhered in the material box 201 are pushed and discharged by scraping, so that the raw materials are accurately weighed and discharged.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision weighing device for fertilizer production raw materials, comprising a support assembly for weighing and pouring the raw materials, characterized in that: It also includes a support component installed on the support component for supporting, weighing and discharging the raw materials, and a feeding component is provided above the support component for discharging the materials in sequence, first coarse and then fine. The supporting component includes a material box (201), a pouring port (202) is provided on one side of the material box (201), and a scraping mechanism for reciprocatingly moving and pushing raw materials is provided inside the material box (201); The feeding assembly includes a storage bin (301), and a coarse discharge mechanism and a fine discharge mechanism are arranged side by side at the bottom of the storage bin (301). The discharge speed of the coarse discharge mechanism is more than five times that of the fine discharge mechanism.

2. The precise weighing device for fertilizer production raw materials according to claim 1, characterized in that: The support assembly includes a frame body (101), a flap (102) is rotatably mounted on one side of the frame body (101), a telescopic cylinder (105) is rotatably mounted between the bottom surface of the flap (102) and the side wall of the frame body (101), and a gravity sensor (104) is fixedly mounted on the surface of the flap (102).

3. The precise weighing device for fertilizer production raw materials according to claim 2, characterized in that: The flap (102) is provided with a rotating shaft (103) at one end near the frame body (101), and the flap (102) is rotatably connected to the frame body (101) through the rotating shaft (103).

4. The precise weighing device for fertilizer production raw materials according to claim 1, characterized in that: The scraping mechanism includes two linear guide rails (203) symmetrically installed on the inner wall of the material box (201), a linear motor (205) is installed on the linear guide rail (203), a fixed seat (206) is installed on the linear motor (205), and a scraper (204) is fixedly installed between the two fixed seats (206).

5. The precise weighing device for fertilizer production raw materials according to claim 4, characterized in that: The material box (201) is made of 304 stainless steel, and the scraper (204) is made of polypropylene.

6. The precise weighing device for fertilizer production raw materials according to claim 1, characterized in that: The coarse discharge mechanism includes a first vertical tube (302), a first horizontal tube (303) is provided at the bottom end of the first vertical tube (302), a first motor (304) is installed at the rear end of the first horizontal tube (303), and a first spiral blade (305) is provided inside the first horizontal tube (303); the fine discharge mechanism includes a second vertical tube (306), a second horizontal tube (307) is provided at the bottom end of the second vertical tube (306), a second motor (308) is installed at the rear end of the second horizontal tube (307), and a second spiral blade (309) is provided inside the second horizontal tube (307).

7. The precise weighing device for fertilizer production raw materials according to claim 6, characterized in that: The first vertical pipe (302) and the second vertical pipe (306) are respectively connected to the storage box (301) through a horn-shaped cone cover.

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