A special tool for calibrating belt scale

Abstract

This utility model discloses a special tool for calibrating belt scales, relating to the field of quantitative feeder technology. It includes a bar valve and columns. Each end of the bar valve has a hexagonal connector, and each end has a handle on its upper part. The handles are semi-circular and located inside the hexagonal connectors. Two columns are provided, each containing a telescopic cavity. An L-shaped support frame is positioned above each column, with its lower end extending into the telescopic cavity and slidably connected to the column. The L-shaped support frame is also connected to the handle. An electric actuator is located inside the telescopic cavity and connected to the column by screws. This special tool replaces chain weights with hanging weights for calibration, reducing measurement error fluctuations, decreasing worker workload, improving inherent safety, eliminating on-site safety hazards, and increasing work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of quantitative feeder technology, specifically a special tool for calibrating belt scales. Background Technology

[0002] A quantitative feeder is a mechanical device used for continuous weighing, metering, and quantitative conveying of bulk materials. It is widely used in industries such as building materials, metallurgy, power, chemicals, coal, and grain. Using weights on the quantitative feeder is a calibration method. Its core principle is to simulate the force exerted by the material on the weighing bridge by applying standard weights to the weighing frame, thereby verifying and calibrating the equipment's metering accuracy. During routine calibration of quantitative feeders for ores and lime, the chain weights provided by the manufacturer are used.

[0003] Chinese Patent Publication No. CN206114099U, authorized on April 19, 2017, discloses an electronic belt scale and its bar weight calibration device. The bar weight calibration device has a pair of first slots and a pair of second slots on its circumferential side. A first support is provided on the frame beam of the belt conveyor. A second support is provided on the weighing bridge of the electronic belt scale. When not calibrating, the bar weight calibration device is placed on the first support. When the electronic belt scale needs to be calibrated, the bar weight calibration device is lifted onto the second support by external force. In this way, no special storage space is needed for the bar weight calibration device, and it is easier for workers to move it, saving manpower. Thus, the electronic belt scale can be calibrated conveniently, quickly, and efficiently.

[0004] The existing feeder chain codes are quite heavy. During normal daily calibration, workers need to lift and lower the chain codes, which can easily cause crushing or crushing injuries to personnel, posing a significant safety hazard. The chain codes are not securely fixed, which will cause fluctuations in measurement errors and fail to meet the usage requirements. Utility Model Content

[0005] The purpose of this utility model is to provide a special tool for calibrating belt scales, in order to solve the problems mentioned in the background art, such as the heavy weight of the existing feeder chain code, which requires workers to lift the chain code up and down during normal daily calibration, which can easily cause personnel to be squeezed or crushed during handling, posing a significant safety hazard; and the chain code not being firmly fixed will cause fluctuations in measurement error, failing to meet the usage requirements.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special tool for calibrating a belt scale, comprising a rod valve and columns. Each end of the rod valve is provided with a hexagonal connector, which is welded to the rod valve. Each end of the rod valve has a handle above it, which is welded to the rod valve. The handle is semi-circular and located inside the hexagonal connector. Two columns are provided, each located on one side of the hexagonal connector. Each column has a telescopic cavity inside. An L-shaped support frame is provided above the column, with its lower end extending into the telescopic cavity and slidably connected to the column. The L-shaped support frame is connected to the handle. An electric actuator is provided inside the telescopic cavity and connected to the column by screws. The electric actuator is located below the L-shaped support frame, and its telescopic end is connected to the L-shaped support frame.

[0007] Preferably, a connecting hole is provided at the center of the hexagonal connector, a counterweight is provided on one side of the hexagonal connector, a connector is provided on one side of the counterweight, and the connector and the counterweight are integrated. The connector is provided in correspondence with the connecting hole, and the connector is threadedly connected to the hexagonal connector.

[0008] Preferably, a first rubber pad is provided above the L-shaped support frame, and the first rubber pad is in close contact with the L-shaped support frame.

[0009] Preferably, a second rubber pad is provided on the inner side of the handle, and the second rubber pad is in close contact with the handle.

[0010] Preferably, an opening groove is provided on the outer wall of both ends of the rod valve, and the opening groove is U-shaped.

[0011] Preferably, the outer surface of the rod valve is provided with a wear-resistant and corrosion-resistant coating, and the wear-resistant and corrosion-resistant coating is integrally coated with the rod valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model device, through the arrangement of a rod valve, a column, an L-shaped support frame, an electric actuator, and a handle, allows for convenient handling of the weight by welding the handle to both ends of the rod valve. The L-shaped support frame is slidably connected to the column to form a support structure that supports the weight. The electric actuator drives the L-shaped support frame to rise and fall. As the L-shaped support frame descends, the weight falls onto the belt scale. The L-shaped support frame is completely separated from the handle, and the weight is placed in the designated position on the quantitative feeder. After entering the calibration mode and starting the quantitative feeder on-site, it is observed whether the hourly feed rate meets the standard. The chain weight is then changed to the weight for calibration, reducing the labor intensity of employees and improving inherent safety.

[0014] 2. This utility model device, through the setting of hexagonal connector, counterweight, connecting hole and connector head, the connector head is inserted into the connecting hole and connected to the hexagonal connector, the counterweight is installed on the hanging weight, and the weight of the hanging weight is adjusted by changing the weight of the counterweight, which can accurately control the weight of the hanging weight and improve the accuracy of the hanging weight calibration data.

[0015] 3. This utility model device improves the wear and corrosion resistance of the hanging code by setting a wear-resistant and corrosion-resistant coating, thereby increasing the service life of the hanging code. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 For the present utility model Figure 2 A magnified view of a portion of area A;

[0019] Figure 4 This is a structural diagram of the connection between the counterweight and the hexagonal connector of this utility model;

[0020] Figure 5 This is a structural diagram of the connection between the L-shaped support frame and the column of this utility model.

[0021] In the diagram: 1. Rod valve; 2. Hexagonal connector; 3. Counterweight; 4. Column; 5. L-shaped support frame; 6. First rubber pad; 7. Handle; 8. Connecting hole; 9. Connector; 10. Opening groove; 11. Second rubber pad; 12. Wear-resistant and anti-corrosion coating; 13. Telescopic cavity; 14. Electric actuator. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-5This utility model provides an embodiment of a special tool for calibrating a belt scale, comprising a rod valve 1 and a column 4. A hexagonal connector 2 is provided at both ends of the rod valve 1, and the hexagonal connector 2 is welded to the rod valve 1. A handle 7 is provided above both ends of the rod valve 1, and the handle 7 is welded to the rod valve 1. The handle 7 is semi-circular and located inside the hexagonal connector 2. Two columns 4 are provided, and both columns 4 are located on one side of the hexagonal connector 2. A telescopic cavity 13 is provided inside the column 4. An L-shaped support frame 5 is provided above the column 4, and the lower end of the L-shaped support frame 5 extends into the telescopic cavity 13. The L-shaped support frame 5 is slidably connected to the column 4. The L-shaped support frame 5 and the handle 7 are connected through the L-shaped support frame 4. An electric push rod 14 is provided inside the telescopic cavity 13, and the electric push rod 14 is connected to the column 4 by screws. The electric push rod 14 is located below the L-shaped support frame 5, and the telescopic end of the electric push rod 14 is connected to the L-shaped support frame 5.

[0024] In use: Drive the electric actuator 14 to raise and lower the L-shaped support frame 5. As the L-shaped support frame 5 descends, the hanging weight falls onto the belt scale. The L-shaped support frame 5 is completely separated from the handle 7. The hanging weight is placed in the designated position on the quantitative feeder. After entering the calibration mode and starting the quantitative feeder on the spot, observe whether the hourly feed rate meets the standard. Using the hanging weight for calibration data is more accurate and the work efficiency is higher. It can effectively reduce the labor intensity of employees and improve the inherent safety on site.

[0025] Please see Figure 1 and Figure 4 A connecting hole 8 is provided at the center of the hexagonal connector 2. A counterweight 3 is provided on one side of the hexagonal connector 2. A connector head 9 is provided on one side of the counterweight 3. The connector head 9 and the counterweight 3 are integrated. The connector head 9 is aligned with the connecting hole 8 and is threadedly connected to the hexagonal connector 2. The connector head 9 is inserted into the connecting hole 8 and connected to the hexagonal connector 2. The counterweight 3 is installed on the hanger. By changing the weight of the counterweight 3, the weight of the hanger can be adjusted, which can accurately control the weight of the hanger and improve the accuracy of the hanger calibration data.

[0026] Please see Figure 1 , Figure 2 and Figure 3 A first rubber pad 6 is provided above the L-shaped support frame 5, and the first rubber pad 6 is in close contact with the L-shaped support frame 5. A second rubber pad 11 is provided on the inner side of the handle 7, and the second rubber pad 11 is in close contact with the handle 7. The first rubber pad 6 and the second rubber pad 11 increase the contact friction, improve the stability of the hanging weight lifting, effectively prevent the hanging weight from sliding during lifting, and improve the safety of hanging weight use.

[0027] Please see Figure 2 and Figure 3An opening groove 10 is provided on the outer wall of both ends of the rod valve 1, and the opening groove 10 is U-shaped. A wear-resistant and anti-corrosion coating 12 is provided on the outer surface of the rod valve 1, and the wear-resistant and anti-corrosion coating 12 is integrated with the rod valve 1. The opening groove 10 makes it convenient to use a bracket to hold the hanging code. The wear-resistant and anti-corrosion coating 12 increases the wear-resistant and anti-corrosion effect of the hanging code and improves the service life of the hanging code.

[0028] Working principle: Select a counterweight 3 of appropriate weight, align the connector 9 with the connector hole 8 and insert it to connect with the hexagonal connector 2, install the counterweight 3 onto the hanging weight, adjust the overall weight of the hanging weight, drive the electric push rod 14 to drive the L-shaped support frame 5 to descend, as the L-shaped support frame 5 descends, the hanging weight falls and is placed on the belt scale, the L-shaped support frame 5 is completely separated from the handle 7, the hanging weight is placed in the designated position of the quantitative feeder, enter the calibration mode and start the quantitative feeder on the spot, observe whether the hourly feed rate meets the standard.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tool for calibration of belt scales, comprising a stick valve (1) and a column (4), characterized in that: Both ends of the rod valve (1) are provided with a hexagonal connector (2), and the hexagonal connector (2) is welded to the rod valve (1). Both ends of the rod valve (1) are provided with a handle (7), and the handle (7) is welded to the rod valve (1). The handle (7) is semi-circular and is located inside the hexagonal connector (2). There are two columns (4), and the two columns (4) are located on one side of the hexagonal connector (2). The inside of the column (4) is provided with a telescopic cavity (13). An L-shaped support frame (5) is provided above (4). The lower end of the L-shaped support frame (5) extends into the interior of the telescopic cavity (13). The L-shaped support frame (5) is slidably connected to the column (4). The L-shaped support frame (5) is connected to the handle (7). An electric push rod (14) is provided inside the telescopic cavity (13). The electric push rod (14) is connected to the column (4) by screws. The electric push rod (14) is located below the L-shaped support frame (5). The telescopic end of the electric push rod (14) is connected to the L-shaped support frame (5).

2. A special tool for calibration of belt scale according to claim 1, characterized in that: The hexagonal connector (2) has a connecting hole (8) at its center. A counterweight (3) is provided on one side of the hexagonal connector (2). A connector (9) is provided on one side of the counterweight (3). The connector (9) and the counterweight (3) are integrated. The connector (9) is provided in correspondence with the connecting hole (8). The connector (9) is threadedly connected to the hexagonal connector (2).

3. A special tool for calibration of belt scale according to claim 1, characterized in that: A first rubber pad (6) is provided above the L-shaped support frame (5), and the first rubber pad (6) is in close contact with the L-shaped support frame (5).

4. A special tool for calibrating a belt scale according to claim 1, characterized in that: A second rubber pad (11) is provided on the inner side of the handle (7), and the second rubber pad (11) is attached to the handle (7).

5. A belt scale calibration tool as claimed in claim 1, wherein: The rod valve (1) has an opening groove (10) on the outer wall at both ends, and the opening groove (10) is U-shaped.

6. A special tool for calibration of belt scale according to claim 1 characterized in that: The outer surface of the rod valve (1) is provided with a wear-resistant and corrosion-resistant coating (12), and the wear-resistant and corrosion-resistant coating (12) is coated integrally with the rod valve (1).

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