An automatic sampling device for belt conveyors

Abstract

This utility model discloses an automatic sampling device for belt conveyors, including a concrete foundation installed directly in front of a funnel, and a head roller mounted on a head frame. A rotary gearbox is installed on the front wall of the funnel, and a sampler is installed on the rotary gearbox. The rear of the sampler is connected to a hydraulic cylinder. A receiving hopper is located directly below the sampling spoon of the sampler, and a sample bag is provided at the outlet of the receiving hopper. A rotating receiving device is located on one side of the receiving hopper, and the rotating receiving device is driven to rotate by a receiving stepper motor. This utility model also includes a programmable PLC controller, sensors, and an HMI (human-machine interface), which can control and monitor the operating status of the sampling device in real time, including motor operating parameters, sensor working status, and perform fault alarms and recording. This utility model adopts an automated standard timed sampling method, eliminating the safety hazards of manual sampling, improving the authenticity and stability of sampling, and ensuring safe and convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of material transportation sampling technology, specifically an automatic sampling device for belt conveyors. Background Technology

[0002] For all enterprises that produce and use ores, the quality of the ore is crucial, directly impacting their production, operations, and profits. Ores are mostly transported efficiently via conveyor belts, but due to the unique characteristics of ores, the representativeness of ore samples has consistently hampered the quality of ore testing, particularly in some metallurgical mines. Currently, most mines still rely on manual sampling, which lacks standardization and suffers from poor sample stability. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic sampling device for belt conveyors, which adopts an automated standard timed sampling method to eliminate the safety hazards of manual sampling, improve the authenticity and stability of sampling, and is safe and convenient to operate, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic sampling device for belt conveyors includes a concrete foundation installed directly in front of a funnel, and a head roller mounted on a head frame, which is fixed to the concrete foundation surface. A cleaner is installed on the side of the belt of the head roller, and two cleaners are installed directly below the belt. A rotary gearbox is installed on the front wall of the funnel, and a sampler is installed on the rotary gearbox. The head of the sampler is inserted into a hollow hole in the rotary gearbox, and the rear of the sampler is connected to the hydraulic rod of a hydraulic cylinder. A support roller is installed at the lower part of the hydraulic rod, and the hydraulic cylinder is mounted on a hydraulic cylinder platform. A receiving hopper is located directly below the sampling spoon of the sampler, and the receiving hopper is mounted on a receiving hopper platform. A sample bag is provided at the outlet of the receiving hopper, and a rotary receiving device is located on one side of the receiving hopper. The rotary receiving device is driven to rotate by a receiving stepper motor.

[0006] Furthermore, the sampling device also includes a programmable PLC controller, sensors, and an HMI (Human Machine Interface). The PLC controller is used to control the operation of the solenoid valve of the hydraulic cylinder, the start / stop, forward / reverse rotation, step distance positioning, timing, and speed adjustment of the stepper motor according to a preset program. The sensors are proximity switches installed on the front and rear sides of the sampler. When the hydraulic cylinder is working, the PLC controller controls the solenoid valve of the hydraulic cylinder to work normally by receiving feedback signals from the sensors. The HMI uses a touch screen to realize human-machine interaction. The operator sets sampling parameters on the HMI, monitors the operating status of the sampling device in real time, including motor operating parameters, sensor operating status, and performs fault alarms and records.

[0007] Furthermore, the front wall of the funnel has an identical hole corresponding to the hollow hole of the rotary gear in the rotary gear box, for the sampler to enter the funnel to take a sample.

[0008] Furthermore, the rotary gearbox is equipped with a drive gear, a rotary gear, and a support gear. The rotary gear is located in the middle of the rotary gearbox, with retaining rings installed on both sides and fixed with bolts. The drive gear is connected to the drive gear shaft via key A. Bearings are installed at both ends of the drive gear shaft and fixed to the bearing seats of the upper and lower covers of the gearbox via bearing caps and bolts. The drive gear is driven to rotate by a material-turning stepper motor, which in turn drives the rotary gear to rotate. The keyway of the rotary gear drives the guide key at the bottom of the sampler to achieve the rotation and material-turning of the sampler.

[0009] Furthermore, the support gear meshes with the rotary gear and rotates. The support gear is connected to the support gear shaft via key B. Bearings are installed at both ends of the support gear shaft and fixed to the bearing seats of the upper and lower gearbox covers respectively by bearing caps and bolts.

[0010] Furthermore, the sampler is connected to the hydraulic rod as a rotating pair, and the step at the head of the hydraulic rod is pressed down by a pressure cap and fixed with bolts.

[0011] Furthermore, the support roller consists of an arc-shaped support roller, a pin, a stop lock plate, a bracket, and bolts, with the bracket installed on the receiving hopper platform.

[0012] Furthermore, the rotary receiving device consists of a bracket, a multi-head receiving cup, and bolts. Each receiving cup of the multi-head receiving cup contains a sample bag, which is aligned with the material inlet of the receiving hopper for loading and unloading samples.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The automatic sampling device for belt conveyors of this utility model adopts an automated standard timed sampling method, which eliminates the safety hazards of manual sampling, improves the authenticity and stability of sampling, and is safe and convenient to operate, thus solving the instability and labor intensity of manual dynamic sampling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the sampler structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the rotary gearbox structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rotary feeder structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the hydraulic rod support roller structure of this utility model;

[0020] Figure 6 This is a schematic diagram of the sampling action of this utility model;

[0021] Figure 7 This is a schematic diagram of the retraction action of this utility model;

[0022] Figure 8 This is a schematic diagram of the material pouring action of this utility model;

[0023] Figure 9 This is a block diagram of the control system structure of this utility model.

[0024] In the diagram: 1. Head roller; 2. Head frame; 3. Protective cover; 4. Funnel; 5. Belt; 6. Material; 7. Concrete foundation; 8. First-stage sweeper; 9. Second-stage sweeper; 10. Hydraulic cylinder; 11. Support roller; 111. Arc-shaped support roller; 112. Bracket; 113. Pin; 114. Stop lock plate; 115. Bolt; 12. Sampler; 121. Sampling spoon; 122. Pressure cap; 123. Bolt; 13. Rotary gearbox; 131. Upper gearbox cover; 132. Lower gearbox cover; 133. Drive gear. 134. Wheel; 135. Rotary gear; 136. Support gear; 137. Bearing; 138. Bearing cap; 139. Drive gear shaft; 130. Support gear shaft; 1310. Retaining ring; 1311. O-ring; 1312. Key A; 1313. Key B; 14. Tilting stepper motor; 15. Receiving hopper; 16. Rotary receiving device; 161. Bracket; 162. Multi-head receiving cup; 163. Bolt; 17. Sample bag; 18. Hydraulic cylinder platform; 19. Receiving hopper platform; 20. Receiving stepper motor. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-8This utility model provides an automatic sampling device for belt conveyors, comprising a concrete foundation 7 installed in front of a funnel 4, and a head roller 1 installed on a head frame 2, the head frame 2 being fixed to the surface of the concrete foundation 7; a cleaner 8 is installed on the side of the belt 5 of the head roller 1, and a second cleaner 9 is installed directly below the belt 5; a rotary gearbox 13 is installed on the front wall of the funnel 4, and an identical hole is opened on the front wall of the funnel 4 corresponding to the hollow hole of the rotary gear 134 of the rotary gearbox 13, for the sampler 12 to enter the funnel 4 for sampling; the sampler 12 is installed on the rotary gearbox 13, and the head of the sampler 12 is inserted into the hollow hole of the rotary gearbox 13; the rotary gearbox 13 contains a drive gear 133, a rotary gear 134, and a support gear 135; the rotary gear 134 is located in the middle of the rotary gearbox 13, with support gears on both sides. The retaining ring 1310 is installed and fixed with bolts; the drive gear 133 is connected to the drive gear shaft 138 via key 1312, and the drive gear shaft 138 is mounted with bearings 136 at both ends and fixed with bearing caps 137 and bolts in the bearing seats of the upper cover 131 and lower cover 132 of the gearbox respectively; the drive gear 133 is driven to rotate by the material-turning stepper motor 14, which drives the rotary gear 134 to rotate, and the keyway of the rotary gear 134 drives the guide key at the bottom of the sampler 12 to realize the rotation and material-turning of the sampler 12; the support gear 135 meshes with the rotary gear 134 and rotates, and the support gear 135 is connected to the support gear shaft 139 via key 1313, and the support gear shaft 139 is mounted with bearings 136 at both ends and fixed with bearing caps 137 and bolts in the bearing seats of the upper cover 131 and lower cover 132 of the gearbox respectively.

[0027] The sampler 12 is connected to the hydraulic rod of the hydraulic cylinder 10 at the rear. The sampler 12 is connected to the hydraulic rod by a rotating joint. The step at the head of the hydraulic rod is pressed by the pressure cap 122 and fixed by bolts 123. To ensure the rigidity and guiding accuracy of the hydraulic rod, a support roller 11 is set at the lower part of the hydraulic rod. The support roller 11 consists of an arc-shaped support roller 111, a pin 113, a stop lock plate 114, a bracket 112 and bolts 115. The bracket 112 is installed on the receiving hopper platform 19. Hydraulic cylinder 10 is mounted on hydraulic cylinder platform 18; a receiving hopper 15 is set directly below the sampling spoon 121 of the sampler 12. The receiving hopper 15 is mounted on receiving hopper platform 19. The outlet of the receiving hopper 15 is provided with a sample bag 17. A rotary receiving device 16 is provided on one side of the receiving hopper 15. The rotary receiving device 16 is composed of a bracket 161, a multi-head receiving cup 162, and bolts 163. Each receiving cup of the multi-head receiving cup 162 contains a sample bag 17, which is aligned with the material outlet of the receiving hopper 15 for collecting the sample material. The rotary receiving device 16 is driven to rotate by receiving stepper motor 20.

[0028] like Figure 9As shown, this embodiment of the invention also includes a programmable PLC controller, sensors, and an HMI (Human-Machine Interface). The PLC controller, as the core control unit, provides comprehensive control over the operation of the sampling device. It possesses powerful logic processing and data handling capabilities and can accept signals from various sensors. The PLC controller controls the operation of the solenoid valve, the start / stop, forward / reverse rotation, step distance positioning, timing, and speed adjustment of the stepper motor according to a preset program. Proximity switches are used as sensors and are installed on the front and rear sides of the hydraulic sampler's traveling mechanism. When the hydraulic cylinder 10 is working, the PLC controller controls the normal operation of the hydraulic cylinder's solenoid valve by receiving limit feedback signals. These signals act as limit switches for the sampler 12 during sampling and material collection, ensuring that the sampling spoon 121 on the sampler 12 can accurately move to the designated sampling and unloading positions. In this embodiment of the invention, a hydraulic cylinder 10 is used as the execution unit for the linear reciprocating motion of the sampler 12 for sampling and receiving. Two stepper motors are used, one for controlling the 180° rotation and turning of the sampling spoon 121 during the unloading process, and the other for controlling the preset rotation angle of the multi-head receiving cup 162. The PLC outputs pulse signals to the stepper motor driver through a preset program, and the driver generates corresponding control signals to control the precise movement of the stepper motors based on the pulse signals. The human-machine interface (HMI) uses a touch screen to realize human-machine interaction. Operators can set sampling parameters (such as receiving time of the receiving spoon, unloading time, rotation time of the sampling cup, number of samplings per day, sampling time period, etc.) on the HMI, monitor the operating status of the sampling device in real time, including motor operating parameters, sensor working status, etc., and perform fault alarms and recording.

[0029] To further explain the embodiments of this utility model, a sampling method for an automatic sampling device for belt conveyors is also provided, comprising the following steps:

[0030] S1: After the belt conveyor automatic sampling device is started, the PLC controller starts to drive the belt conveyor automatic sampling device to run through the programmed program.

[0031] S2: The PLC controller sends a signal to the hydraulic cylinder 10, energizing the forward solenoid valve and pushing the hydraulic rod to push the sampling spoon 121 on the sampler 12 into the receiving hopper 15. When it encounters the forward limit sensor, the forward solenoid valve of the hydraulic cylinder 10 is de-energized and stops to start receiving material. After the timer is set, the backward solenoid valve of the hydraulic cylinder 10 is energized and pushes the hydraulic rod to push the sampling spoon 121 connected to the sampler 12, which is full of material, backward to the unloading position. When it encounters the backward limit sensor, the backward solenoid valve of the hydraulic cylinder 10 is de-energized and stops to prepare for unloading.

[0032] S3: After the timing is set by the user, the material turning stepper motor 14 starts to work. The material turning stepper motor 14 drives the sampler 12 connected to the rotary gear 134 to rotate 180° to unload the material. After the timing is set by the user, the material turning stepper motor 14 drives the sampler 12 connected to the rotary gear 134 to rotate 180° to reset.

[0033] S4: After the timing is set by the user, the receiving stepper motor 20 is powered on and starts working. The receiving stepper motor 20 drives the multi-head receiving cup 162, which is full of material, to rotate one step distance, and rotates the next empty sampling cup to the designated sampling position. After the time period is set by the user, the PLC controller sends a signal to the hydraulic system again to repeat the above operation program to perform the automatic sampling work of the second sampling cup. This cycle continues. The automatic sampling work of the belt conveyor is automatically completed by preset the sampling time period and sampling number of each day by the PLC controller.

[0034] In summary, the automatic sampling device for belt conveyors provided by this utility model adopts an automated standard timed sampling method, eliminates the safety hazards of manual sampling, improves the authenticity and stability of sampling, is safe and convenient to operate, and solves the instability and labor intensity of manual dynamic sampling.

[0035] 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 scope of the technology 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. An automatic sampling device for belt conveyors, characterized in that, The structure includes a concrete foundation (7) installed directly in front of the funnel (4), and a head roller (1) installed on a head frame (2), which is fixed to the surface of the concrete foundation (7). A cleaner (8) is installed on the side of the belt (5) of the head roller (1), and a second cleaner (9) is installed directly below the belt (5). A rotary gearbox (13) is installed on the front wall of the funnel (4), and a sampler (12) is installed on the rotary gearbox (13). The head of the sampler (12) is inserted into the hollow hole of the rotary gearbox (13). 2) The rear part is connected to the hydraulic rod of the hydraulic cylinder (10). A support roller (11) is set at the lower part of the hydraulic rod. The hydraulic cylinder (10) is installed on the hydraulic cylinder platform (18). A receiving hopper (15) is set directly below the sampling spoon (121) of the sampler (12). The receiving hopper (15) is installed on the receiving hopper platform (19). The outlet of the receiving hopper (15) is provided with a sample bag (17). A rotary receiving device (16) is provided on one side of the receiving hopper (15). The rotary receiving device (16) is driven to rotate by the receiving stepper motor (20).

2. The automatic sampling device for belt conveyor as described in claim 1, characterized in that: The sampling device also includes a programmable PLC controller, sensors, and an HMI (human-machine interface). The PLC controller is used to control the operation of the solenoid valve of the hydraulic cylinder (10), the start and stop of the stepper motor, forward and reverse rotation, step positioning, timing, and speed adjustment according to a preset program. The sensors are proximity switches installed on the front and rear sides of the sampler (12). When the hydraulic cylinder (10) is working, the PLC controller controls the solenoid valve of the hydraulic cylinder (10) to work normally by receiving feedback signals from the sensors. The HMI uses a touch screen to realize human-machine interaction. The operator sets sampling parameters on the HMI, monitors the operating status of the sampling device in real time, including motor operating parameters, sensor operating status, and performs fault alarms and records.

3. The automatic sampling device for belt conveyors as described in claim 2, characterized in that: The funnel (4) has a hole on its front wall corresponding to the hollow hole of the rotary gear (134) of the rotary gear box (13), which is used for the sampler (12) to enter the funnel (4) to take a sample.

4. The automatic sampling device for belt conveyor as described in claim 3, characterized in that: The rotary gearbox (13) is equipped with a drive gear (133), a rotary gear (134) and a support gear (135). The rotary gear (134) is located in the middle of the rotary gearbox (13), and retaining rings (1310) are installed on both sides and fixed with bolts. The drive gear (133) is connected to the drive gear shaft (138) through key A (1312). Bearings (136) are installed at both ends of the drive gear shaft (138) and fixed to the bearing seats of the upper cover (131) and lower cover (132) of the gearbox respectively through bearing covers (137) and bolts. The drive gear (133) is driven to rotate by a material-turning stepper motor (14), which drives the rotary gear (134) to rotate. The keyway of the rotary gear (134) drives the guide key at the bottom of the sampler (12) to realize the rotation and material-turning of the sampler (12).

5. The automatic sampling device for belt conveyor as described in claim 4, characterized in that: The support gear (135) meshes with the rotary gear (134) and rotates. The support gear (135) is connected to the support gear shaft (139) via key B (1313). The support gear shaft (139) is equipped with bearings (136) at both ends and is fixed to the bearing seats of the upper cover (131) and lower cover (132) of the gearbox via bearing caps (137) and bolts.

6. The automatic sampling device for belt conveyor as described in claim 5, characterized in that: The sampler (12) is connected to the hydraulic rod by a rotating pair, and the step at the head of the hydraulic rod is pressed down by a pressure cap (122) and fixed by bolts (123).

7. The automatic sampling device for belt conveyors as described in claim 6, characterized in that: The roller (11) consists of an arc-shaped roller (111), a pin (113), a stop lock plate (114), a bracket (112), and bolts (115). The bracket (112) is installed on the receiving hopper platform (19).

8. The automatic sampling device for belt conveyor as described in claim 7, characterized in that: The rotary feeder (16) consists of a bracket (161), a multi-headed receiving cup (162), and a bolt (163). Each receiving cup of the multi-headed receiving cup (162) contains a sample bag (17) which is aligned with the material inlet of the receiving hopper (15) for loading and unloading samples.

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