High-precision discontinuous metering device for bulk materials

Abstract

The utility model belongs to the technical field of bulk material weighing, and discloses a bulk material high-precision discontinuous metering device, which has the specific technical scheme that the bulk material high-precision discontinuous metering device comprises a bearing frame, a feeding bracket and a weighing bracket, a feeding bin is arranged on the feeding bracket, and two weighing tank bodies are arranged on the weighing bracket side by side; the bottom of the feeding bin is respectively connected with two weighing tanks through feeding hoses, three weighing sensors are arranged between the weighing tanks and the weighing support, and discharging ports of the weighing tanks are communicated with the material receiving bin through flexible connecting pipes. Static weighing and continuous material conveying are achieved, static weighing is high in metering accuracy, stable in performance and reliable in work, and the system can be used for trade settlement, can also be applied to batching control in the production process and can be widely applied to high-precision metering of bulk bulk materials in enterprises such as modern warehousing and ports.

Description

Technical Field

[0001] This utility model belongs to the field of bulk material weighing technology, specifically relating to a high-precision non-continuous cumulative metering device for bulk materials. Background Technology

[0002] In the loading of bulk materials, materials are generally transported to the train's tanks via silos. Current quantitative conveying devices are mainly divided into two categories: the first is continuous weighing conveying, which uses continuous weighing but is not accurate enough and prone to leakage. Based on a 2% leakage rate, this is estimated to result in losses of several million yuan annually. The second is discontinuous weighing conveying, which is accurate, but cannot simultaneously convey materials into the train's tanks during weighing, affecting the overall conveying progress. Furthermore, current metering equipment is controlled manually based on experience, resulting in high manual management costs. This extensive control and management can easily lead to secondary dust pollution and resource waste. Utility Model Content

[0003] To address the technical problems existing in the prior art, this utility model provides an alternating weighing and conveying system, which improves weighing accuracy and ensures continuous material conveying.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-precision non-continuous metering device for bulk materials, including a load-bearing frame, a feeding bracket and a weighing bracket are provided inside the load-bearing frame, and the feeding bracket is placed above the weighing bracket.

[0005] The feeding support is equipped with a feeding hopper, and the bottom of the feeding hopper has two primary discharge ports.

[0006] Two weighing tanks are symmetrically arranged on the weighing support. The second inlet located at the top of the weighing tank is connected to the corresponding first outlet through a first flexible connecting pipe. A first pneumatic butterfly valve is arranged on the first flexible connecting pipe to control the opening and closing of the first flexible connecting pipe. The first pneumatic butterfly valve controls whether the feeding bin feeds material into the weighing tank.

[0007] Multiple weighing sensors are installed between the weighing tank and the weighing support, and the weighing tank is weighed in real time through multiple weighing sensors.

[0008] The device also includes a receiving hopper located below the weighing tank. The top of the receiving hopper has two third inlets, which are connected to the corresponding second outlets located at the bottom of the weighing tank via a second flexible connecting pipe. The second flexible connecting pipe is equipped with a second pneumatic butterfly valve to control whether the weighing tank supplies material to the receiving hopper. The bottom of the receiving hopper has a third outlet, through which material is conveyed into the tank of the train.

[0009] The top of the weighing tank has two pneumatic flanges that are connected to the inside of the weighing tank. A dust collection device or an air balance pipe can be connected through the pneumatic flanges to ensure the safe and stable operation of the weighing device.

[0010] Preferably, the weighing tank and the weighing support are connected by three weighing sensors.

[0011] A first support plate is arranged on the front side of the weighing tank. The top of the first support plate is connected to the outer side of the weighing tank through multiple stiffening plates. The multiple stiffening plates are arranged at equal intervals. The bottom of the first support plate is supported by a weighing sensor between it and the weighing bracket.

[0012] A second support plate is arranged on the outer side of the weighing tank. The top of the second support plate is connected to the outer side of the weighing tank by multiple stiffening plates. The multiple stiffening plates are arranged at equal intervals. The bottom of the second support plate is supported by a weighing sensor between it and the weighing bracket.

[0013] A third support plate is arranged on the back side of the weighing tank. The top of the third support plate is connected to the outer side of the weighing tank through multiple stiffening plates. The multiple stiffening plates are arranged at equal intervals. The bottom of the third support plate is supported by a weighing sensor between it and the weighing bracket.

[0014] The feeding bracket is supported by four upper auxiliary beams, with two upper auxiliary beams arranged on the front side and the other two upper auxiliary beams arranged on the back side.

[0015] The weighing bracket is supported by four lower auxiliary beams, with two lower auxiliary beams located on the left side of the load-bearing frame and the other two on the right side.

[0016] Compared with the prior art, the specific advantages of this utility model are as follows: This utility model provides a non-continuous cumulative weighing scale, which divides the bulk material to be weighed into several discontinuous weighed loads, weighs each load sequentially, and then accumulates the weighing results of each load, and then unloads the weighed material sequentially. This non-continuous cumulative weighing scale has high measurement accuracy, stable performance, and reliable operation. It can be widely used in modern warehousing, ports, and other enterprises for high-precision measurement of bulk materials, and can also be used for batching control in the production process and for trade settlement. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is the front view of the present invention.

[0019] Figure 3 This is the left view of the present invention.

[0020] Figure 4 This is a rear view of the present invention.

[0021] Figure 5 This is the right view of the present invention.

[0022] In the diagram, 1 is the load-bearing frame, 2 is the feeding bracket, 3 is the weighing bracket, 4 is the feeding bin, 5 is the first discharge port, 6 is the weighing tank, 7 is the second inlet, 8 is the first flexible connecting pipe, 9 is the first pneumatic butterfly valve, 10 is the weighing sensor, 11 is the receiving bin, 12 is the third inlet, 13 is the second discharge port, 14 is the second flexible connecting pipe, 15 is the second pneumatic butterfly valve, 16 is the third discharge port, 17 is the pneumatic flange, 18 is the first support plate, 19 is the second support plate, 20 is the third support plate, 21 is the upper auxiliary beam, and 22 is the lower auxiliary beam. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] like Figure 1-5 As shown, the high-precision non-continuous metering device for bulk materials includes a load-bearing frame 1. The bottom of the load-bearing frame 1 is fixed by multiple anchor bolts. The load-bearing frame 1 is equipped with a feeding bracket 2 and a weighing bracket 3. The feeding bracket 2 is placed above the weighing bracket 3.

[0025] A feeding bin 4 is arranged on the feeding support 2, and two first discharge ports 5 are arranged side by side at the bottom of the feeding bin 4.

[0026] Two weighing tanks 6 are symmetrically arranged on the weighing support 3. The second inlet 7 located on the top of the weighing tank 6 is connected to the corresponding first outlet 5 through a first flexible connecting pipe 8. A first pneumatic butterfly valve 9 is arranged on the first flexible connecting pipe 8 to control the opening and closing of the first flexible connecting pipe 8. The first pneumatic butterfly valve 9 controls whether the feeding bin 4 feeds material into the weighing tank 6.

[0027] Multiple weighing sensors 10 are installed between the weighing tank 6 and the weighing bracket 3, and the weighing tank 6 is weighed in real time through the multiple weighing sensors 10.

[0028] The device also includes a receiving bin 11 located below the weighing tank 6. The top of the receiving bin 11 has two third inlets 12. The third inlets 12 are connected to the corresponding second outlets 13 located at the bottom of the weighing tank 6 via a second flexible connecting pipe 14. The second flexible connecting pipe 14 is equipped with a second pneumatic butterfly valve 15 to control the opening and closing of the second flexible connecting pipe 14. The second pneumatic butterfly valve 15 controls whether the weighing tank 6 supplies material to the receiving bin 11. The bottom of the receiving bin 11 has a third outlet 16, through which material is conveyed into the tank of the train.

[0029] Two pneumatic flanges 17 are arranged on the top of the weighing tank 6 and are connected to the inside of the weighing tank 6. A dust collection device or an air balance pipe can be connected through the pneumatic flanges 17 to ensure the safe and stable operation of the weighing device.

[0030] Preferably, the weighing tank 6 and the weighing bracket 3 are connected by three weighing sensors 10, and the weighing sensors 10 are static electronic scales.

[0031] A first support plate 18 is arranged on the front side of the weighing tank 6. The top of the first support plate 18 is connected to the outer side of the weighing tank 6 through multiple stiffening plates. The multiple stiffening plates are arranged at equal intervals. The bottom of the first support plate 18 is supported by a weighing sensor 10 between it and the weighing bracket 3.

[0032] A second support plate 19 is arranged on the outer side of the weighing tank 6. The top of the second support plate 19 is connected to the outer side of the weighing tank 6 by multiple stiffening plates. The multiple stiffening plates are arranged at equal intervals. The bottom of the second support plate 19 is supported by a weighing sensor 10 between it and the weighing bracket 3.

[0033] A third support plate 20 is arranged on the back side of the weighing tank 6. The top of the third support plate 20 is connected to the outer side of the weighing tank 6 through multiple stiffening plates. The multiple stiffening plates are arranged at equal intervals. The bottom of the third support plate 20 is supported by a weighing sensor 10 between it and the weighing bracket 3.

[0034] The feeding bracket 2 is supported by four upper auxiliary beams 21, with two upper auxiliary beams 21 arranged on the front side and the other two upper auxiliary beams 21 arranged on the back side.

[0035] The weighing support 3 is supported by four lower auxiliary beams 22 between it and the load-bearing frame 1. Two of the lower auxiliary beams 22 are arranged on the left side of the load-bearing frame 1, and the other two are arranged on the right side of the load-bearing frame 1.

[0036] The working process of this utility model is as follows: The operator inputs the loading weight into the computer operating system, opens the first pneumatic butterfly valve 9 on the left, and closes the second pneumatic butterfly valve 15 on the left, the first pneumatic butterfly valve 9 on the right, and the second pneumatic butterfly valve 15 on the right. Alumina is fed into the weighing tank 6 on the left by the feeding bin 4. The weight is measured by three weighing sensors 10 at the bottom of the weighing tank 6 on the left, and each weight signal is converted into a digital signal by the module and transmitted to the PLC system in real time through the interface. The computer system analyzes and calculates the data and transmits the results to the PLC for control (the system mainly averages the data to reduce errors). When the input weight of alumina reaches the set maximum weight, the first pneumatic butterfly valve 9 on the left closes, and the system records the weight of the material in the weighing tank 6. The second pneumatic butterfly valve 15 on the left is opened, and the alumina in the weighing tank 6 on the left enters the receiving bin 11 through the second flexible connecting pipe 14 on the left. The discharge valve at the bottom of the receiving bin 11 is opened, and the alumina enters the train car.

[0037] During the weighing process of the left weighing tank 6, the right weighing tank 6 can simultaneously unload material into the train tank through the unloading hopper; during the weighing process of the right weighing tank 6, the left weighing tank 6 can simultaneously unload material into the train tank through the unloading hopper; thus realizing the work of non-continuous weighing and continuous unloading.

[0038] Calculate the net weight of the material and start the next weighing. After each weighing, the net weight is added to the previous cumulative net weight. When the cumulative net weight reaches the loading weight, the weighing process will automatically stop.

[0039] This device is installed indoors and is effectively windproof and waterproof.

[0040] This invention does not involve improvements to the control system and software. It relies on existing publicly available operating systems to achieve measurement and statistical work. This non-continuous cumulative scale has high measurement accuracy, stable performance, and reliable operation. It can be used for trade settlement and can also be applied to batching control in the production process.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall be included within the scope of the present utility model.

Claims

1. A high-precision discontinuous metering device for bulk materials, characterized in that, It includes a load-bearing frame (1), and a feeding bracket (2) and a weighing bracket (3) are provided inside the load-bearing frame (1). The feeding bracket (2) is placed above the weighing bracket (3). The feeding support (2) is provided with a feeding bin (4), and the bottom of the feeding bin (4) is provided with two first discharge ports (5). Two weighing tanks (6) are symmetrically arranged on the weighing bracket (3). The second inlet (7) at the top of the weighing tank (6) is connected to the corresponding first outlet (5) through a first flexible connecting pipe (8). A first pneumatic butterfly valve (9) for controlling the opening and closing of the first flexible connecting pipe (8) is arranged on the first flexible connecting pipe (8). Multiple weighing sensors (10) are installed between the weighing tank (6) and the weighing bracket (3). It also includes a receiving hopper (11) arranged below the weighing tank (6). The top of the receiving hopper (11) is provided with two third inlets (12). The third inlets (12) are connected to the corresponding second outlets (13) located at the bottom of the weighing tank (6) through a second flexible connecting pipe (14). A second pneumatic butterfly valve (15) for controlling the opening and closing of the second flexible connecting pipe (14) is arranged on the second flexible connecting pipe (14). The bottom of the receiving hopper (11) is provided with a third outlet (16).

2. The high-precision discontinuous metering device for bulk materials according to claim 1, characterized in that, Two pneumatic flanges (17) are arranged on the top of the weighing tank (6) and are connected to the inside of the weighing tank (6).

3. The high-precision discontinuous metering device for bulk materials according to claim 2, characterized in that, Three weighing sensors (10) are arranged between the weighing tank (6) and the weighing bracket (3). The weighing tank (6) has a first support plate (18) arranged on the front side. The top of the first support plate (18) is connected to the outer side of the weighing tank (6) through multiple stiffeners. The bottom of the first support plate (18) is supported by a weighing sensor (10) between it and the weighing bracket (3). The outer side of the weighing tank (6) is provided with a second support plate (19). The top of the second support plate (19) is connected to the outer side of the weighing tank (6) through multiple stiffeners. The bottom of the second support plate (19) is supported by a weighing sensor (10) between it and the weighing bracket (3). A third support plate (20) is arranged on the back side of the weighing tank (6). The top of the third support plate (20) is connected to the outer side of the weighing tank (6) through multiple stiffeners. The bottom of the third support plate (20) is supported by a weighing sensor (10) between it and the weighing bracket (3).

4. The high-precision discontinuous metering device for bulk materials according to claim 3, characterized in that, The feeding bracket (2) and the load-bearing frame (1) are supported by four upper auxiliary beams (21); The weighing bracket (3) and the load-bearing frame (1) are supported by four lower auxiliary beams (22).

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