Quantitative feeding device for potassium nitrate production

Abstract

The utility model provides a quantitative feeding device for potassium nitrate production, which relates to the technical field of potassium nitrate production devices, and comprises a fixing frame, a weighing sensor, a quantitative hopper, a feeder, a support and a motor set, a supporting ring is mounted at the top end of the fixing frame, and a discharging barrel coaxial with the supporting ring is mounted on the lower portion of the fixing frame. The weighing sensors are evenly installed at the bottom of the supporting ring, the measuring hopper and the supporting ring are coaxially arranged and connected with the weighing sensors, the feeder and the measuring hopper are coaxially arranged through a support installed on the supporting ring, an outlet in the bottom of the measuring hopper corresponds to the discharging barrel, the diameter of the outlet is smaller than that of the discharging barrel, and the lower portion of the feeder extends into the measuring hopper. The motor set is installed on the support, the power output end of the motor set is connected with the power input end of the feeder, and the problems that a traditional weighing hopper bin is narrow in discharging, and powdery raw materials are prone to adhesion and bridging can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of potassium nitrate production equipment, specifically to a quantitative feeding device for potassium nitrate production. Background Technology

[0002] Potassium nitrate is widely used in agriculture, industry, and other fields. Its production methods mainly include the metathesis method, neutralization method, and ion exchange method. Among these, the metathesis method has become the mainstream in industry due to the readily available raw materials and mature technology. This method typically uses potassium chloride and sodium nitrate or ammonium nitrate as raw materials, and produces potassium nitrate through steps such as dissolution, metathesis reaction, and crystallization separation.

[0003] In potassium nitrate production, precise raw material proportioning determines product quality, especially for powdered raw materials such as potassium chloride and sodium nitrate. Traditional powder feeding involves auger conveying, with the material being weighed quantitatively in a weighing hopper before being fed into the reaction tank. However, the narrow outlet of the traditional weighing hopper makes it prone to adhesion and bridging of powdered raw materials. Taking potassium chloride as an example, its particles often carry static charges, easily adsorbing onto the hopper wall during transport. This not only wastes raw materials but also causes the actual amount of material weighed by the auger to deviate from the preset value. Furthermore, powders easily form stable arched structures at the hopper outlet, hindering normal material flow and creating bridging. If there are too many fine particles, a dense accumulation layer will form at the bottom of the hopper, causing the material above to stagnate due to the inability to overcome the arch support, leading to supply interruption. Traditional solutions rely on manual tapping or tamping, but this method is not only inefficient but also poses safety risks. Therefore, this application proposes a quantitative feeding device for potassium nitrate production. Utility Model Content

[0004] In order to overcome the problems in the background art, this utility model provides a quantitative feeding device for potassium nitrate production, which solves the problems of narrow discharge of traditional weighing hoppers and easy adhesion and bridging of powdery raw materials.

[0005] A quantitative feeding device for potassium nitrate production includes a fixed frame, a weighing sensor, a quantitative hopper, a feeder, a support, and a motor unit. A support ring is mounted on the top of the fixed frame, and a discharge cylinder coaxial with the support ring is mounted on the lower part of the fixed frame. The weighing sensor is evenly installed at the bottom of the support ring. The quantitative hopper is coaxially arranged with the support ring and connected to the weighing sensor. The feeder is coaxially arranged with the quantitative hopper via a support mounted on the support ring. The bottom outlet of the quantitative hopper corresponds to the discharge cylinder and has a smaller diameter than the discharge cylinder. The lower part of the feeder extends into the quantitative hopper. The motor unit is mounted on the support, and the power output end of the motor unit is connected to the power input end of the feeder.

[0006] Furthermore, a set of symmetrically arranged fan-shaped baffles are installed inside the bottom outlet of the metering hopper, with fan-shaped discharge ports on both sides of the fan-shaped baffles.

[0007] Furthermore, the feeder includes a rotating shaft, a scraper component one, a scraper component two, and a fan-shaped pusher plate. The upper end of the rotating shaft is connected to a bearing mounted on a bracket and the power output end of a motor unit. Scraper component one and scraper component two are mounted on the rotating shaft. The scraper of scraper component one is set to correspond to the cylindrical section of the metering hopper, and the scraper of scraper component two is set to correspond to the conical section of the metering hopper. The fan-shaped pusher plate is mounted on the rotating shaft above the fan-shaped baffle plate and corresponds to the fan-shaped discharge port.

[0008] Furthermore, an auxiliary scraper is installed on the rotating shaft below the fan-shaped baffle.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This application designs a quantitative hopper and a feeder. After the powder raw material is accurately weighed and metered in the quantitative hopper, it is fed through the feeder. The scraper component 1, scraper component 2, and fan-shaped pusher plate on the feeder can prevent the powder from sticking to the wall and bridging, thus solving the problems of narrow discharge of traditional weighing hoppers and easy adhesion and bridging of powder raw materials. Attached Figure Description

[0011] To clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments are explained.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the fixing frame structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the quantitative hopper structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the feeder structure of this utility model;

[0016] Figure 5 This is a side view of the feeder structure of this utility model.

[0017] 1-Fixed frame, 11-Support ring, 12-Discharge cylinder, 2-Weighing sensor, 3-Quantitative hopper, 31-Fan-shaped baffle, 32-Fan-shaped discharge port, 4-Feeder, 41-Rotating shaft, 42-Scraper component one, 43-Scraper component two, 44-Fan-shaped pusher plate, 45-Auxiliary scraper, 5-Bracket, 6-Motor unit. Detailed Implementation

[0018] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0019] See Figure 1-5 This utility model proposes a quantitative feeding device for potassium nitrate production. The device includes a fixed frame 1, weighing sensors 2, a quantitative hopper 3, a feeder 4, a support 5, and a motor unit 6. A support ring 11 is installed at the top of the fixed frame 1, and a discharge cylinder 12, coaxial with the support ring 11, is installed at the bottom of the fixed frame 1. The discharge cylinder 12 can be connected to the inlet of the reaction vessel. The weighing sensors 2 are evenly installed at the bottom of the support ring 11. The quantitative hopper 3 is coaxially arranged with the support ring 11 and connected to the weighing sensors 2. Powder conveyed by the auger enters the quantitative hopper 3. The increased gravity is detected by the weighing sensor 2 to achieve quantitative powder feeding. When the gravity reaches the threshold, it is fed back to the control system of the front-end material conveying to stop the feeding auger. The feeder 4 is coaxially set with the metering hopper 3 through the bracket 5 installed on the support ring 11. The bottom outlet of the metering hopper 3 corresponds to the discharge cylinder 12 and its diameter is smaller than that of the discharge cylinder 12 to prevent powder from escaping. The lower part of the feeder 4 extends into the metering hopper 3 to avoid bridging against the wall. The motor unit 6 is installed on the bracket 5. The power output end of the motor unit 6 is connected to the power input end of the feeder 4 so that the feeder 4 can rotate.

[0020] See Figure 1-5 The bottom outlet of the quantitative hopper 3 is equipped with a set of symmetrically arranged fan-shaped baffles 31. The fan-shaped baffles 31 have fan-shaped discharge ports 32 on both sides, and the heavy material can be discharged from the fan-shaped discharge ports 32.

[0021] See Figure 1-5 The feeder 4 includes a rotating shaft 41, a first scraper 42, a second scraper 43, and a fan-shaped pusher plate 44. The upper end of the rotating shaft 41 is connected to a bearing mounted on the bracket 5 and the power output end of the motor unit 6. The first scraper 42 and the second scraper 43 are mounted on the rotating shaft 41. The scraper of the first scraper 42 is set to correspond to the cylindrical section of the metering hopper 3, and the scraper of the second scraper 43 is set to correspond to the conical section of the metering hopper 3. The first scraper 42 and the second scraper 43 can... The powder adhering to the wall can be scraped off in time to ensure that all the powder can enter the reaction tank and avoid errors. The fan-shaped pusher plate 44 is installed on the rotating shaft 41 above the fan-shaped baffle plate 31 and corresponds to the fan-shaped discharge port 32. When the feeder 4 stops working, the fan-shaped pusher plate 44 and the fan-shaped baffle plate 31 form a sealed structure to make the metering hopper 3 weigh the material. When feeding, the rotating shaft 41 drives the fan-shaped pusher plate 44 to rotate and push the material into the fan-shaped discharge port 32, which can avoid bridging.

[0022] See Figure 1-5 An auxiliary scraper 45 is installed on the rotating shaft 41 below the fan-shaped baffle 31, which can prevent the powder from clumping and blocking the fan-shaped baffle 31.

[0023] Work process:

[0024] Quantitative weighing: The powder conveyed by the feeding auger enters the quantitative hopper 3 through the opening at the top of the quantitative hopper 3. The gravity of the quantitative hopper 3 increases, and the weighing sensor 2 is activated to detect the increase in weight. At this time, the fan-shaped pusher plate 44 and the fan-shaped baffle plate 31 form a sealed structure. When the gravity reaches the threshold, the weighing sensor 2 feeds back to the upstream feeding control system, and the feeding auger stops feeding.

[0025] Quantitative feeding: When the motor unit 6 starts, the rotating shaft 41 drives the scraper 1 42, scraper 2 43 and fan-shaped pusher plate 44 to rotate. The scraper 1 42 heats the scraper 2 43 and scrapes off the powder stuck to the wall. The fan-shaped pusher plate 44 pushes the material into the fan-shaped discharge port 32 and falls into the reaction tank connected to the discharge cylinder 12.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quantitative feeding device for potassium nitrate production, characterized in that: The device includes a fixed frame (1), a weighing sensor (2), a metering hopper (3), a feeder (4), a bracket (5), and a motor assembly (6). The fixed frame (1) has a support ring (11) installed at the top and a discharge cylinder (12) coaxial with the support ring (11) installed at the bottom. The weighing sensor (2) is evenly installed at the bottom of the support ring (11). The metering hopper (3) is coaxial with the support ring (11) and connected to the weighing sensor (2). The feeder (4) is coaxial with the metering hopper (3) through the bracket (5) installed on the support ring (11). The bottom outlet of the metering hopper (3) corresponds to the discharge cylinder (12) and has a smaller diameter than the discharge cylinder (12). The lower part of the feeder (4) extends into the metering hopper (3). The motor assembly (6) is installed on the bracket (5) and the power output end of the motor assembly (6) is connected to the power input end of the feeder (4).

2. The quantitative feeding device for potassium nitrate production according to claim 1, characterized in that: A set of symmetrically arranged fan-shaped baffles (31) are installed in the bottom outlet of the metering hopper (3), and the two sides of the fan-shaped baffles (31) are fan-shaped discharge ports (32).

3. The quantitative feeding device for potassium nitrate production according to claim 1, characterized in that: The feeder (4) includes a rotating shaft (41), a scraper (42), a scraper (43), and a fan-shaped pusher plate (44). The upper end of the rotating shaft (41) is connected to the bearing installed on the bracket (5) and the power output end of the motor unit (6). The scraper (42) and the scraper (43) are installed on the rotating shaft (41). The scraper of the scraper (42) is set to correspond to the cylindrical section of the metering hopper (3), and the scraper of the scraper (43) is set to correspond to the conical section of the metering hopper (3). The fan-shaped pusher plate (44) is installed on the rotating shaft (41) above the fan-shaped baffle plate (31) and corresponds to the fan-shaped discharge port (32).

4. The quantitative feeding device for potassium nitrate production according to claim 3, characterized in that: An auxiliary scraper (45) is installed on the rotating shaft (41) below the fan-shaped baffle (31).

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