Sintered ore sample static weighing device

Abstract

The utility model discloses a static weighing device for a sintered ore sample, and relates to the technical field of weighing devices. The feeding device comprises a feeding machine, and a conveying belt is arranged below a discharging port of the feeding machine. In the conveying direction, a hopper is arranged below the front end of the conveying belt, the outer side of the upper end of the hopper is connected with a horizontally-arranged fixing support, a weighing sensor is installed at the bottom of the fixing support, and a supporting base is arranged at the bottom of the weighing sensor. A gate plate is arranged at the lower end of the hopper, the gate plate extends out of the hopper and is connected with a push rod for driving the gate plate to move horizontally, the push rod is connected with a push rod bracket, and the other end of the push rod bracket is mounted on the hopper. According to the utility model, the weight of a sintered ore sample can be accurately measured, and the accuracy of sample data is ensured, so that the precision and the reliability of a drum strength test are improved, and the problem of weighing deviation caused by factors such as vibration of a batching electric vibration feeder, powder residue and the like in the traditional feeding and weighing process is solved.

Description

Technical Field

[0001] This utility model relates to the field of weighing device technology, and in particular to a sample weighing device used in the strength testing process of sintered ore drum. Background Technology

[0002] In the sinter production process, drum strength testing is a crucial quality control step to ensure product quality. Traditional drum strength testing methods typically utilize a drum-mounted vibrating feeder. The specific process involves the vibrating feeder conveying the sinter sample onto a conveyor belt, which then transfers the sample into the drum for testing. During this process, the vibrating feeder acts as a weighing device; when the sample weight reaches a preset value, the feeder stops supplying material, and the sample then proceeds through the conveyor belt into the drum for further testing.

[0003] However, this traditional testing method has obvious drawbacks in practical applications, which can introduce weighing errors into the material handling process and thus adversely affect the subsequent test results.

[0004] On the one hand, the vibratory feeder with drum generates vibration during operation. This vibration causes a small amount of sample to remain inside the equipment. Especially after the feeder stops vibrating, some sintered ore sample will still remain inside the equipment. These residual samples cannot be accurately measured, directly leading to deviations in the weighing results and reducing the accuracy of the weighing.

[0005] On the other hand, the conveyor belt is also susceptible to the effects of residual powder during sample transport. Because the sample may contain powder, some of this powder may adhere to the belt during transport, resulting in a slight difference between the actual amount of sample entering the drum and the expected weight.

[0006] The combined effect of these factors makes it difficult for traditional weighing methods to provide high-precision weight data. Inaccurate weighing data further affects the reliability of experimental data, potentially negatively impacting the quality control of sintered ore.

[0007] Therefore, there is an urgent need to develop a new weighing device that can effectively avoid the effects of vibration interference and powder residue while maintaining a simple structure and convenient operation, thereby providing more accurate weight data of sintered ore samples and ensuring the accuracy and reliability of subsequent test data. Summary of the Invention

[0008] This invention provides a static weighing device for sintered ore samples. This weighing device can accurately measure the weight of sintered ore samples, ensuring the accuracy of sample data, thereby improving the accuracy and reliability of drum strength testing. It solves the weighing deviation problem caused by factors such as vibration of the batching electric vibratory feeder and powder residue in the traditional feeding and weighing process.

[0009] To solve the above problems, the technical solution adopted by this utility model is:

[0010] It includes a feeder with a conveyor belt below the feeder's outlet; a hopper is located below the front end of the conveyor belt along the conveying direction, and a horizontally fixed bracket is connected to the upper outer side of the hopper. A weighing sensor is installed at the bottom of the fixed bracket, and a support base is provided at the bottom of the weighing sensor; a gate is provided at the lower end of the hopper, the gate extends out of the hopper and is connected to a push rod that drives the gate to move horizontally, the push rod is connected to a push rod bracket, and the other end of the push rod bracket is installed on the hopper.

[0011] A more specific technical solution than the above-mentioned technical solution is that the front end of the conveyor belt is connected to a sealing cover, and the sealing cover extends directly above the hopper and is infinitely close to the hopper.

[0012] Furthermore, the hopper has a conical structure that is wider at the top and narrower at the bottom.

[0013] Furthermore, the inner wall of the hopper is coated with an anti-stick and wear-resistant layer.

[0014] Furthermore, the anti-stick and wear-resistant layer is a ceramic patch layer.

[0015] Furthermore, an anti-vibration device is provided between the weighing sensor and the support base.

[0016] Furthermore, the vibration damping device is one of a spring or a rubber pad.

[0017] Furthermore, four fixed supports are evenly distributed along the perimeter of the upper end of the hopper, and a weighing sensor is installed at the bottom of each fixed support.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0019] This invention effectively solves the weighing error problem existing in traditional weighing methods through static weighing technology, precise weight control, smooth sample release mechanism, and good vibration resistance and stability design, providing more accurate sinter sample weight data and ensuring the accuracy and reliability of subsequent test data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 1In the diagram, the following components are labeled: 1 – feeder, 2 – conveyor belt, 3 – hopper, 4 – fixed bracket, 5 – weighing sensor, 6 – support base, 7 – gate, 8 – push rod, 9 – push rod bracket, 10 – sealing cover, 11 – anti-stick and wear-resistant layer, 12 – vibration damping device. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings: Example

[0023] like Figure 1 The illustrated static weighing device for sintered ore samples includes a feeder 1, with a conveyor belt 2 located below the feeder 1's outlet. Along the conveying direction, a hopper 3 is located below the front end of the conveyor belt 2 for temporarily storing the sintered ore samples entering the weighing area. A horizontally positioned fixed support 4 is connected to the upper outer side of the hopper 3. A weighing sensor 5 is installed at the bottom of the fixed support 4. The weighing sensor 5 is the core component of this device, responsible for accurately measuring the weight of the sintered ore samples entering the hopper 3. A support base 6 is located at the bottom of the weighing sensor 5, providing a solid foundation for the entire weighing system and ensuring stability during operation. The support base 6 is preferably made of robust steel or fixed to the ground to support the weight of the weighing sensor 5 and other components. The lower end of the hopper 3 is provided with a gate plate 7. The gate plate 7 extends out of the hopper 3 and is connected to a push rod 8 that drives the gate plate 7 to move horizontally. The push rod 8 is connected to a push rod bracket 9. The other end of the push rod bracket 9 is installed on the hopper 3. In this scheme, the push rod 8 is used to push the gate plate 7 to open or close the bottom of the hopper 3. The gate valve 7 is used in conjunction with the push rod 8 to receive and unload sintered ore samples.

[0024] Preferably, the push rod 8 is an electric push rod.

[0025] The principle behind this solution for static weighing is as follows:

[0026] ① Feeding and conveying:

[0027] Feeder 1 is responsible for conveying the sintered ore sample onto conveyor belt 2.

[0028] The conveyor belt 2 transports the sample from the feeder 1 to the top of the hopper 3, ready for weighing.

[0029] ② Static weighing:

[0030] When the sintered ore sample falls into the hopper 3 via the conveyor belt 2, the weight of the hopper 3 and the sintered ore sample inside it will be transferred to the weighing sensor 5 through the fixed bracket 4.

[0031] The weighing sensor 5 measures and provides feedback on the total weight of the hopper 3 and the sintered ore sample in real time. Since the weighing process is carried out while the sintered ore sample is stationary, it avoids the weighing errors caused by the vibration of traditional drum vibratory feeders.

[0032] ③ Weight control:

[0033] When the feeder 1 (which also has a weighing sensor) is vibrating during operation, the weight of the feeder 1 decreases, and it stops operating when it reaches the system preset value. The conveyor belt 2 transports the sintered ore sample into the hopper 3, and the hopper 3 uses the weighing sensor 5 to re-weigh the sintered ore sample to check whether it meets the preset value.

[0034] At this point, the sintered ore sample has completely fallen into hopper 3 and is in a static state, providing an accurate basis for subsequent weighing.

[0035] ④ Release and testing of sintered ore samples:

[0036] After weighing is completed, the gate 7 is driven to move horizontally by the push rod 8, opening the outlet at the lower end of the hopper 3, so that the sintered ore sample falls into the drum for drum strength testing.

[0037] The design of the gate 7 ensures that the sinter sample can be smoothly and accurately released into the drum after weighing, avoiding loss or residue of the sinter sample during the release process.

[0038] ⑤ Vibration resistance and stability:

[0039] The design of the fixed bracket 4 and the support base 6 provides stable support for the weighing sensor 5 and reduces the impact of external vibration on the weighing results.

[0040] In summary, this invention effectively solves the weighing error problem existing in traditional weighing methods through static weighing technology, precise weight control, smooth sinter sample release mechanism, and good vibration resistance and stability design, providing more accurate sinter sample weight data and ensuring the accuracy and reliability of subsequent test data.

[0041] More specifically, the front end of the conveyor belt 2 is connected to a sealing cover 10, which extends directly above the hopper 3 and is very close to it. The sealing cover 10 acts like a "protective shield," enclosing the space between the front end of the conveyor belt 2 and the top of the hopper 3. This arrangement prevents dust from flying and material leakage when the sintered ore sample falls from the conveyor belt 2 into the hopper 3 due to the drop and the characteristics of the material itself. Furthermore, since the sealing cover 10 is separate and non-contact with the hopper 3, external interference can be avoided from affecting the weighing data.

[0042] Preferably, the hopper 3 can be designed as a conical structure with a larger top and a smaller bottom. This design helps guide the sintered ore sample to fall smoothly under the action of gravity, while reducing the adhesion and residue of the sintered ore sample on the inner wall of the hopper 3, thus improving the accuracy of weighing.

[0043] Preferably, an anti-sticking and wear-resistant layer 11 can also be coated on the inner wall of the hopper 3. Since sintered ore samples often contain fine particles or powder, they are prone to sticking to the inner wall of the hopper 3 due to factors such as static electricity and humidity during the conveying process. The anti-sticking and wear-resistant layer 11 can reduce the surface tension, making it difficult for powder to adhere, avoiding weighing errors caused by residue, and improving weighing accuracy.

[0044] Preferably, the non-stick and wear-resistant layer 11 can be a ceramic patch layer.

[0045] Preferably, an anti-vibration device 12 can be provided between the weighing sensor 2 and the support base 6. This arrangement reduces the impact of vibration on the weighing data and improves the stability and reliability of the weighing data.

[0046] Preferably, the vibration damping device 12 can be one of a spring or a rubber pad.

[0047] Preferably, four fixed supports 4 can be evenly distributed along the perimeter of the upper end of the hopper 3, and a weighing sensor 5 can be installed at the bottom of each fixed support 4, that is, multi-point distributed weighing, which reduces the accumulation of errors.

[0048] The specific static weighing operation process of this utility model is as follows:

[0049] Before weighing, the load cell 5 sends a signal to the electric push rod 8, controlling the gate 7 to remain closed. The sintered ore sample is fed evenly onto the conveyor belt 2 via the feeder 1. The conveyor belt 2 transports the sample into the hopper 3, where it flows smoothly into the weighing area. The sintered ore sample in the hopper 3 is measured by the load cell 5, which transmits the weight data to the control system or display screen for operator recording and processing. Once the weighing data is stable and recorded, the electric push rod 8 opens the gate 7, allowing the sintered ore sample to be discharged. After the hopper 3 is emptied, the gate 7 closes, entering the preparation state for the next weighing cycle.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A static weighing device for sintered ore samples, characterized in that: The device includes a feeder with a conveyor belt below its outlet. Along the conveying direction, a hopper is located below the front end of the conveyor belt. A horizontally mounted fixed bracket is connected to the upper outer side of the hopper. A weighing sensor is installed at the bottom of the fixed bracket, and a support base is located at the bottom of the weighing sensor. A gate is located at the lower end of the hopper, extending out of the hopper and connected to a push rod that drives the gate to move horizontally. The push rod is connected to a push rod bracket, and the other end of the push rod bracket is mounted on the hopper.

2. The static weighing device for sintered ore samples according to claim 1, characterized in that: The front end of the conveyor belt is connected to a sealing cover, which extends directly above the hopper and is infinitely close to the hopper.

3. The static weighing device for sintered ore samples according to claim 1 or 2, characterized in that: The hopper has a conical structure that is wider at the top and narrower at the bottom.

4. The static weighing device for sintered ore samples according to claim 3, characterized in that: The inner wall of the hopper is coated with an anti-stick and wear-resistant layer.

5. The static weighing device for sintered ore samples according to claim 4, characterized in that: The non-stick and wear-resistant layer is a ceramic patch layer.

6. The static weighing device for sintered ore samples according to claim 5, characterized in that: An anti-vibration device is provided between the weighing sensor and the support base.

7. The static weighing device for sintered ore samples according to claim 6, characterized in that: The vibration damping device is one of a spring or a rubber pad.

8. The static weighing device for sintered ore samples according to claim 7, characterized in that: Four fixed supports are evenly distributed around the upper perimeter of the hopper, and a weighing sensor is installed at the bottom of each fixed support.

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