Automatic particle size detector

Abstract

The utility model belongs to the technical field of mineral separation corollary equipment, and particularly discloses an automatic particle size detector which is arranged above a conveying belt in a crossing mode and comprises a sampling shovel and a screen, the sampling shovel is connected with the output end of a motor through a rotary connecting rod, and the screen is connected with the sampling shovel through a rotary connecting rod under the action of the motor. The rotary connecting rod can drive the sampling shovel to rotate by 360 degrees in the vertical plane to enter and exit from the sampling port, when the sampling shovel rotates to the position, close to the conveying belt, below the sampling shovel, the sampling shovel can shovel up mineral aggregates on the conveying belt through the feeding port and collect the mineral aggregates into the storage cavity, and when the sampling shovel rotates to the position above the sampling shovel, materials in the storage cavity can slide to the screen through the discharging port. Only particles with the particle size smaller than the screen mesh holes can fall to the conveying belt through the screen mesh, particles with the particle size larger than or equal to the screen mesh holes continue to be left on the screen mesh, whether the particle size of materials conveyed on the conveying belt meets the requirement or not can be rapidly detected according to the particles screened on the screen mesh, regular automatic sampling detection is achieved, and the detection work quality is improved. Labor intensity is reduced, and working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mineral processing supporting equipment, and specifically discloses an automatic particle size detector. Background Art

[0002] The ore materials sorted by the ore dressing plant are generally transported to the silo for temporary storage by belt conveyor. According to the needs of production work, it is necessary to sample and test the ore materials to analyze whether the particle size meets the requirements, and use this as a parameter to improve the sorting work. At present, most of the sampling work is manual sampling, which requires operators to stay at their posts for a long time, and it is difficult to achieve regular sampling, which ultimately affects the quality of the inspection work. Summary of the invention

[0003] In order to solve the problems in the background technology, the utility model discloses an automatic particle size detector, including a sampling shovel and a screen. The motor drives the sampling shovel to take samples, and the screen screens the samples, thereby realizing regular automatic sampling and detection and improving the quality of detection work.

[0004] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0005] An automatic particle size detector comprises a bracket straddling a conveyor belt, a mounting frame and a fixing plate are arranged at intervals on the bracket, a sampling port extending along the conveying direction of the conveyor belt is arranged between the mounting frame and the fixing plate, a screen is arranged on the mounting frame, a motor is arranged on the fixing plate, a rotating connecting rod is sleeved on the output end of the motor, a sampling shovel is fixedly connected to the other end of the rotating connecting rod, the sampling shovel comprises a feed port, a material storage cavity and a material discharge port, under the action of the motor, the rotating connecting rod can drive the sampling shovel to rotate 360 ​​degrees in a vertical plane to enter and exit the sampling port, when the sampling shovel rotates to a position adjacent to the conveyor belt below, the sampling shovel can scoop up the mineral material on the conveyor belt through the feed port and gather it into the material storage cavity, when the sampling shovel rotates to an upper position, the material in the material storage cavity can slide onto the screen through the material discharge port.

[0006] Furthermore, the automatic particle size detector also includes a programmable controller. A first weight sensor is arranged under the conveyor belt. The programmable controller is connected to the first weight sensor and the motor through a line or a wireless signal. The programmable controller can adjust the start and stop and / or power of the motor through the signal transmitted by the first weight sensor.

[0007] Furthermore, the automatic particle size detector is provided with a second weight sensor and an alarm between the screen and the mounting frame. The second weight sensor and the alarm are connected to the programmable controller via lines or wireless signals to realize information exchange.

[0008] Furthermore, in the automatic particle size detector, when the sampling shovel rotates to the lowest point, the opening direction of the feed port is opposite to the feeding direction of the conveyor belt.

[0009] Furthermore, in the automatic particle size detector, the storage chamber is a hollow structure, one end of the storage chamber is connected to the rotating connecting rod, and the other end of the storage chamber is provided with a discharge port, a chute extending in a direction close to the screen is provided at the discharge port, an opening is provided on the side wall of the storage chamber, a shovel plate extending obliquely outward is provided at the opening, and fan-shaped plates are respectively provided on both sides of the shovel plate, and the shovel plate, the fan-shaped plate and the edge of the storage chamber opening together form a feed port of the storage chamber.

[0010] Furthermore, in the automatic particle size detector, the screen is detachably connected to the mounting frame.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses an automatic particle size detector which is arranged astride above the conveyor belt and comprises a sampling shovel and a screen. Under the action of a motor, a rotating connecting rod can drive the sampling shovel to rotate 360 ​​degrees in a vertical plane and enter and exit a sampling port. When the sampling shovel rotates to a position adjacent to the conveyor belt below, the sampling shovel can scoop up the mineral materials on the conveyor belt through the feed port and gather them into a storage cavity. When the sampling shovel rotates to an upper position, the materials in the storage cavity can slide onto the screen through the discharge port. Only particles with a particle size smaller than the screen hole can pass through the screen and fall onto the conveyor belt, while particles with a particle size greater than or equal to the screen hole continue to remain on the screen. According to the screened particles on the screen, it is possible to quickly detect whether the particle size of the material conveyed on the conveyor belt meets the requirements, thereby realizing regular automatic sampling and detection, improving the quality of detection work, reducing labor intensity, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model automatic particle size detector;

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the sampling shovel in the utility model;

[0015] In the above figure: 1- conveyor belt; 2- bracket; 3- mounting frame; 4- sieve; 5- fixed plate; 6- sampling shovel; 6.1- fan-shaped plate A; 6.2- shovel plate; 6.3- feed inlet; 6.4- fan-shaped plate B; 6.5- baffle; 6.6- storage chamber; 6.7- discharge port; 6.8- chute; 7- rotating connecting rod; 8- motor. DETAILED DESCRIPTION

[0016] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0017] Combined with Figure 1 and 2The utility model is an automatic particle size detector, which comprises a bracket 2 arranged across the conveyor belt 1, a mounting frame 3 and a fixing plate 5 are arranged on the bracket 2 at intervals, a sampling port extending along the conveying direction of the conveyor belt 1 is arranged between the mounting frame 3 and the fixing plate 5, a screen 4 is arranged on the mounting frame 3, a motor 8 is arranged on the fixing plate 5, a rotating connecting rod 7 is sleeved on the output end of the motor 8, and a sampling shovel 6 is fixedly connected to the other end of the rotating connecting rod 7, and the sampling shovel 6 comprises a feed port 6.3, The material storage chamber 6.6 and the material discharge port 6.7 are provided. Under the action of the motor 8, the rotating connecting rod 7 can drive the sampling shovel 6 to rotate 360 ​​degrees in the vertical plane to enter and exit the sampling port. When the sampling shovel 6 rotates to the position adjacent to the conveyor belt 1 below, the sampling shovel 6 can scoop up the mineral material on the conveyor belt 1 through the material feed port 6.3 and collect it into the material storage chamber 6.6. When the sampling shovel 6 rotates to the upper position, the material in the material storage chamber 6.6 can slide onto the screen 4 through the material discharge port 6.7. During operation, according to the speed of the conveyor belt 1 and the weight of the material being transported, the material in the material storage chamber 6.6 can be adjusted. The quantity and properties are set, the output power of the motor 8 is set, the speed at which the rotating connecting rod 7 drives the sampling shovel 6 to rotate is adjusted, and the sampling times and intervals are accurately controlled. When the sampling shovel 6 rotates to the position below the conveyor belt 1, the sampling shovel 6 scoops up the mineral materials on the conveyor belt 1 through the feed port 6.3 and collects them into the storage chamber 6.6. The sampling shovel 6 continues to rotate. When the sampling shovel 6 rotates to the upper position, the materials in the storage chamber 6.6 slide onto the screen 4 through the discharge port 6.7 under the action of gravity. Only particles with a diameter smaller than the holes of the screen 4 are The particles in the holes can pass through the screen 4 and fall to the conveyor belt 1, and the particles with a particle size greater than or equal to the holes in the screen 4 continue to remain on the screen. According to the screened particles on the screen 4, it is possible to quickly detect whether the particle size of the material conveyed on the conveyor belt meets the requirements, thereby achieving regular automatic sampling and detection and improving the quality of detection work. It should be noted here that the automatic particle size detector of the utility model is preferably provided with a shell (not shown in the figure) on the outer cover of the sampling shovel 6, the rotating connecting rod 7, the screen 4 and the motor 8, and the shell is inverted on the top of the bracket 2.

[0018] As an optional design, the automatic particle size detector is preferably further included in a programmable controller. A first weight sensor (not shown in the figure) is arranged below the conveyor belt 1. The programmable controller is connected to the first weight sensor and the motor 8 through a line or a wireless signal. When working, the first weight sensor measures the weight of the material conveyed on the conveyor belt online and transmits the information to the programmable controller. The programmable controller adjusts the start and stop and / or power of the motor 8 according to the speed of the conveyor belt 1 and the weight conveying signal of the material conveyed on the conveyor belt measured online by the first weight sensor, and automatically adjusts the speed at which the rotating connecting rod 7 drives the sampling shovel 6 to rotate, thereby realizing automatic control of the number of sampling times and interval time, realizing automatic sampling detection, improving work efficiency, and reducing labor intensity. It should be noted here that a time relay can also be set in the motor control circuit, and the start and stop of the motor can be controlled by the time relay, so as to set the sampling time and the downtime, and sample the detected material points regularly and orderly. In addition, it is a prior art to set a first weight sensor below the conveyor belt 1 to measure the weight of the material on the conveyor belt, so the structure and setting method of the first weight sensor are not described in detail here.

[0019] As an optional design, the automatic particle size detector is preferably provided with a second weight sensor and an alarm between the screen 4 and the mounting frame 3 (the second weight sensor and the alarm are not shown in the figure). The second weight sensor and the alarm are connected to the programmable controller by line or wireless signal to realize information exchange. The second weight sensor measures the weight of the material screened on the screen 4 online and transmits the information to the programmable controller. In actual work, the interval value of the weight of the material screened on the screen 4 within a period of time is first set on the programmable controller. As the detection time accumulates, when the weight of the material screened on the screen 4 exceeds the set interval value, the second weight sensor sends a signal to the programmable controller, and the programmable controller commands the alarm to start, reminding the on-site staff to deal with it in time. The on-site staff improves the sorting working parameters according to the actual situation. It should be noted that the weight sensor and the alarm are prior art, so the structure and setting method of the second weight sensor and the alarm are not described in detail here.

[0020] As an optional design, the automatic particle size detector is preferred. When the sampling shovel 6 rotates to the lowest point, the opening direction of the feed port 6.3 is opposite to the feeding direction of the conveyor belt 1. It should be noted here that the sampling shovel 6 can also achieve sampling when the opening direction of the feed port 6.3 is the same as the feeding direction of the conveyor belt 1, but the opening direction of the feed port 6.3 is opposite to the feeding direction of the conveyor belt 1, which is more conducive to sampling by the sampling shovel 6.

[0021] As an optional design, the automatic particle size detector is preferably used, the storage chamber 6.6 is a hollow structure, one end of the storage chamber 6.6 is connected to the rotating connecting rod 7, a discharge port 6.7 is provided at the other end of the storage chamber 6.6, a chute 6.8 extending in a direction close to the screen 4 is provided at the discharge port 6.7, an opening is provided on the side wall of the storage chamber 6.6, a shovel plate 6.2 extending obliquely outward is provided at the opening, the shovel plate 6.2 is an arc structure, and fan plates A6.1 and fan plates B6.4 are respectively provided on both sides of the shovel plate 6.2, and the shovel plate 6.2, fan plates A6.1 and fan plates B6.4 are altogether The two sides of the shovel 6 are connected to each other to form a storage trough, and the bottom of the storage trough is connected to the storage cavity 6.6 through the opening of the storage cavity 6.6. When the sampling shovel 6 rotates from the bottom to the top, the shovel plate 6.2 scoops up the material, and the material is first gathered to the storage trough under the joint action of the shovel plate 6.2, the fan plate A6.1 and the fan plate B6.4. The material accumulated in the storage trough slowly slides into the storage cavity 6.6, and then slides from the discharge port 6.7 along the chute 6.8 to the screen 4. Preferably, a baffle 6.5 is also provided at the opening of the storage cavity 6.6 to prevent the material accumulated in the storage trough from escaping when it slides into the storage cavity 6.6 during the rotation of the sampling shovel 6.

[0022] As an optional design, the automatic particle size detector is preferred, and the sieve 4 is detachably connected to the mounting frame 3, so that the sieves 4 with different apertures can be installed conveniently according to needs.

[0023] The working process of the utility model is as follows:

[0024] According to the properties of the conveyed material and the working requirements, a screen 4 with a suitable aperture is first installed on the mounting frame 3, and the interval value of the weight of the material screened on the screen 4 under the condition that the weight of the material conveyed by the conveyor belt 1 per unit time is determined is set on the programmable controller, and the output power of the motor 8 is adjusted by the programmable controller to adjust the speed at which the rotating connecting rod 7 drives the sampling shovel 6 to rotate, so as to achieve the regulation of the sampling times and the sampling frequency. When the sampling shovel 6 rotates to the position adjacent to the conveyor belt 1 below, the sampling shovel 6 scoops up the mineral material on the conveyor belt 1 through the feed port 6.3 and gradually gathers it into the storage tank. The sampling shovel 6 continues to rotate. During the process of the sampling shovel 6 rotating to the uppermost position, the material in the storage tank slides into the storage cavity 6.6 under the action of gravity. , and then slides down the chute 6.8 through the discharge port 6.7 onto the screen 4. Particles with a particle size smaller than the holes of the screen 4 pass through the screen 4 and fall onto the conveyor belt 1. Particles with a particle size greater than or equal to the holes of the screen 4 are screened on the screen. As the detection time accumulates, when the weight of the material screened on the screen 4 exceeds the set interval value, the second weight sensor sends a signal to the programmable controller, and the programmable controller commands the alarm to start, reminding the on-site staff to deal with it in time. The on-site staff improves the sorting work parameters according to the actual situation, and can quickly detect whether the particle size of the material conveyed on the conveyor belt meets the requirements based on the screened particles on the screen 4, thereby realizing regular automatic sampling and detection, improving the quality of detection work, and reducing labor intensity.

[0025] The above description is only an application implementation method of the present utility model, but the protection scope of the present utility model is not limited to this, and the right scope of the present utility model cannot be limited by this. Any equivalent changes made according to the technical solution of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An automatic particle size detector, characterized in that: The utility model comprises a bracket straddling the conveyor belt, a mounting frame and a fixing plate are arranged at intervals on the bracket, a sampling port extending along the conveying direction of the conveyor belt is arranged between the mounting frame and the fixing plate, a screen is arranged on the mounting frame, a motor is arranged on the fixing plate, a rotating connecting rod is sleeved on the output end of the motor, a sampling shovel is fixedly connected to the other end of the rotating connecting rod, the sampling shovel comprises a feed port, a material storage cavity and a material discharge port, under the action of the motor, the rotating connecting rod can drive the sampling shovel to rotate 360 ​​degrees in a vertical plane to enter and exit the sampling port, when the sampling shovel rotates to a position adjacent to the conveyor belt below, the sampling shovel can scoop up the mineral material on the conveyor belt through the feed port and gather it into the material storage cavity, when the sampling shovel rotates to an upper position, the material in the material storage cavity can slide onto the screen through the material discharge port.

2. The automatic particle size detector according to claim 1 is characterized in that: It also includes a programmable controller. A first weight sensor is arranged below the conveyor belt. The programmable controller is connected to the first weight sensor and the motor through a line or a wireless signal. The programmable controller can adjust the start and stop and / or power of the motor through the signal transmitted by the first weight sensor.

3. The automatic particle size detector according to claim 2 is characterized in that: A second weight sensor and an alarm are arranged between the screen and the mounting frame. The second weight sensor and the alarm are connected to the programmable controller via lines or wireless signals to realize information exchange.

4. The automatic particle size detector according to claim 3 is characterized in that: When the sampling shovel rotates to the lowest point, the opening direction of the feed port is opposite to the feeding direction of the conveyor belt.

5. The automatic particle size detector according to claim 3 is characterized in that: The storage chamber is a hollow structure, one end of which is connected to a rotating connecting rod, and a discharge port is arranged at the other end of the storage chamber. A chute extending in a direction close to the screen is arranged at the discharge port, and an opening is arranged on the side wall of the storage chamber, and a shovel plate extending obliquely outward is arranged at the opening, and fan-shaped plates are respectively arranged on both sides of the shovel plate, and the shovel plate, the fan-shaped plate and the edge of the storage chamber opening together form a feed port of the storage chamber.

6. The automatic particle size detector according to claim 3 is characterized in that: The screen is detachably connected to the mounting frame.

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