Automatic sample preparation equipment for radioactivity detection of building materials

Abstract

The utility model discloses an automatic sample preparation device for radioactivity detection of building materials in the technical field of radioactivity detection of building materials. The device comprises a crushing box, a grinding box is installed at the bottom of the crushing box, and the structure is reasonable. The utility model is provided with a crushing box, a grinding box, a screening box and a weighing device. The building materials are put into the crushing box from a feed hopper, and then crushed into small pieces by a crushing roller. After the building materials in the small pieces enter the grinding box, the grinding hammer in the grinding box cooperates with the grinding ball to grind them into powder. The building materials in the powder can enter the screening box, and the screening net in the screening box cooperates with a vibration motor B to effectively screen out a large part of the particle size in the powdered building materials, so that the particles are discharged from the discharge hopper. The building materials with qualified particle sizes after screening are discharged into a sampling box on the weighing device, and finally weighed by the weighing device.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactivity detection of building materials, in particular to automatic sample preparation equipment for radioactivity detection of building materials. Background Art

[0002] With the continuous improvement of the national economic level, building decoration activities are also increasing, the types of building decoration materials and decoration styles are gradually enriched, and some wall materials, ceramics, and stones with artistic aesthetics are gradually produced. These decoration materials are mainly processed from natural stones. Due to the differences in the regions where the raw materials exist and the differences in the natural conditions experienced during the formation process, the materials have a certain degree of radioactivity. In order to prevent the radioactivity of materials from exceeding the limit and endangering human health, it is necessary to test the radioactivity of building materials.

[0003] To test the radioactivity of building materials, the test samples must first be crushed and ground to a particle size of no more than 0.16 mm. The samples are then placed in a sample box with the same geometry as the standard sample, weighed (accurate to 0.1 g), sealed, and tested. Currently, the sample preparation process is mainly done manually. The samples are first crushed manually, then ground using a sealed sample preparation grinder, then sieved using a 0.16 mm gravel sieve, and finally weighed. The manpower and time costs are high, and the sample preparation process is cumbersome, time-consuming, and labor-intensive.

[0004] In order to overcome the shortcomings of existing sample preparation technology, an automatic sample preparation device for radioactive detection of building materials is provided to simplify the sample preparation process of radioactive detection of building materials and realize an automated sample preparation process integrating manual crushing, grinding, screening and weighing. Utility Model Content

[0005] The utility model aims to provide an automatic sample preparation device for radioactive detection of building materials. The device is provided with a crushing box, a grinding box, a screening box and a weighing device. The building materials are put into the crushing box from a feed hopper, and then crushed into small pieces by a crushing roller. After the building materials in the small pieces enter the grinding box, the grinding hammer in the grinding box cooperates with the grinding balls to grind them into powder. The building materials in powder form can enter the screening box, and the screening net in the screening box cooperates with the vibration motor B to effectively screen out the larger particle size part of the powdered building materials, so that the part is discharged from the discharge hopper, and the building materials with qualified particle size after screening are discharged into the sampling box on the weighing device, and finally weighed by the weighing device, so as to solve the problem that the automatic sample preparation device for radioactive detection of building materials proposed in the above-mentioned background technology has poor effect and affects the efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: an automatic sample preparation device for radioactivity detection of building materials, comprising a crushing box, a grinding box is installed at the bottom of the crushing box, and a screening box is installed below the grinding box;

[0007] A mounting frame is installed below the screening box.

[0008] Preferably, a feed hopper is installed on the top of the crushing box, and crushing rollers are rotatably connected to both sides of the inside of the crushing box.

[0009] Preferably, grinding grooves are provided on the inner wall of the grinding box, and a limiting ring is provided at the center position of the inner bottom end of the grinding box.

[0010] Preferably, the upper surface of the limiting ring is rotatably connected with a ball bearing, a motor is installed at the bottom center of the grinding box, and a grinding hammer is installed on the output shaft of the motor.

[0011] Preferably, grinding balls are provided on the outer wall of the grinding hammer, and vibration motors A are installed on both sides of the front end surface of the grinding box.

[0012] Preferably, feed pipes are provided on both sides of the top of the screening box, the top of the feed pipes is fixedly connected to the bottom of the grinding box, a support plate is installed under the inner wall of one side of the screening box, a mounting seat is installed on the top of the support plate with a spring, a screening net is rotatably connected to the outer wall of one side of the mounting seat, a vibration motor B is installed on one side of the bottom of the screening net, a discharge hopper is installed under the outer wall of one side of the screening box, a discharge pipe is installed at the bottom of the screening box, and an electric valve is provided on the outer wall of the discharge pipe.

[0013] Preferably, a weighing device is installed at the top center of the mounting frame, and a sampling box is installed above the weighing device.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By providing a crushing box, a grinding box, a screening box and a weighing device, the building materials are put into the crushing box from the feed hopper, and then crushed into small pieces by the crushing roller. After the building materials in the small pieces enter the grinding box, the grinding hammer in the grinding box cooperates with the grinding ball to grind them into powder. The building materials in powder can enter the screening box, and then the screening net in the screening box cooperates with the vibration motor B to effectively screen out the larger particle size part of the powdered building materials, so that they are discharged from the discharge hopper, and the building materials with qualified particle size after screening are discharged into the sampling box on the weighing device, and finally weighed by the weighing device. No relevant technical personnel are required to operate during the process, and the fully automatic sample preparation of the test samples for radioactive detection of building materials is realized, which saves the sample preparation time and the manpower investment in the test process, effectively improves the use effect of the automatic sample preparation equipment for radioactive detection of building materials, and also effectively improves the sample preparation efficiency of the automatic sample preparation equipment for radioactive detection of building materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A front cross-sectional view provided for the utility model;

[0017] Figure 2 A front view provided for the utility model;

[0018] Figure 3 The utility model provides Figure 1 A magnified view of the structure at A;

[0019] Figure 4 A schematic top view of a limit ring provided by the utility model;

[0020] Figure 5 The utility model provides Figure 1 A magnified view of the structure at B in FIG.

[0021] Figure 6 The present invention is a three-dimensional schematic diagram of a part of the structure provided by the utility model.

[0022] In the figure: 1. Crushing box; 101. Feed hopper; 102. Crushing roller; 2. Grinding box; 201. Grinding groove; 202. Limiting ring; 203. Ball; 204. Motor; 205. Grinding hammer; 206. Grinding ball; 207. Vibration motor A; 3. Screening box; 301. Feed pipe; 302. Support plate; 303. Spring; 304. Mounting seat; 305. Screening net; 306. Vibration motor B; 307. Discharge hopper; 308. Discharge pipe; 309. Electric valve; 4. Mounting frame; 401. Weighing device; 402. Sampling box. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides the following technical solutions: an automatic sample preparation device for radioactivity detection of building materials, please refer to Figure 1-6 , including a crushing box 1, a feed hopper 101 is installed on the top of the crushing box 1, and crushing rollers 102 are rotatably connected on both sides of the crushing box 1. Two groups of crushing rollers 102 are correspondingly arranged on both sides of the crushing box 1 in a rotatable connection manner, and the crushing rollers 102 can be driven by a driving device, and the crushing rollers 102 can be rotated by using a motor, a gear transmission connection and other equipment. The building materials that need to be detected by radioactivity are put into the crushing box 1 from the feed hopper 101, and then crushed by the crushing rollers 102. A grinding box 2 is installed at the bottom of the crushing box 1, and grinding grooves 201 are opened on the inner wall of the grinding box 2. A limit ring 202 is provided at the center of the bottom end of the grinding box 2, and the upper surface of the limit ring 202 is rotatably connected with a ball 203. A motor 204 is installed at the bottom center of the grinding box 2, and a grinding hammer 205 is installed on the output shaft of the motor 204. Grinding balls 206 are provided on the outer wall of the grinding hammer 205. The front of the grinding box 2 Vibration motors A207 are installed on both sides of the end surface. The top of the grinding box 2 is connected to the crushing box 1, so that the crushed building materials in the crushing box 1 enter the grinding box 2. The grinding hammer 205 is installed on the output shaft of the motor 204 on the grinding box 2, and several grinding balls 206 on the grinding hammer 205 are set in the grinding groove 201 on the grinding box 2, so that the motor 204 drives the grinding hammer 205 to rotate, and the grinding balls 206 grind the building materials entering the grinding box 2. During this period, several balls 203 on the surface of the limit ring 202 in the grinding box 2 can support the grinding hammer 205, and do not affect the rotation operation of the grinding hammer 205, and try to avoid the weight of the grinding hammer 205 affecting the output shaft on the motor 204. At the same time, during the grinding process, the building materials can be vibrated by the vibration effect of the vibration motor A207 on the grinding box 2, so that they are ground evenly, and try to avoid the situation of building materials being blocked during the grinding process.

[0025] A screening box 3 is installed below the grinding box 2, and feed pipes 301 are provided on both sides of the top of the screening box 3. The top of the feed pipe 301 is fixedly connected to the bottom of the grinding box 2, a support plate 302 is installed below the inner wall of one side of the screening box 3, a spring 303 is provided on the top of the support plate 302, a mounting seat 304 is installed on the top of the spring 303, a screening net 305 is rotatably connected to the outer wall of one side of the mounting seat 304, a vibration motor B306 is installed on one side of the bottom of the screening net 305, a discharge hopper 307 is installed below the outer wall of one side of the screening box 3, a discharge pipe 308 is installed at the bottom of the screening box 3, and an electric valve 309 is provided on the outer wall of the discharge pipe 308. The screening box 3 is connected to the bottom of the grinding box 2 through the feed pipe 301, so that the ground powdered building materials can enter the screening box 3, and the bottom of the mounting seat 304 is mounted in the screening box 3 by two sets of springs 303. The top of the support plate 302 is provided, and one side of the screening net 305 is installed on one side of the mounting seat 304 in a rotatable connection manner, so that the powdered building materials entering the screening box 3 naturally fall onto the surface of the screening net 305. The spring 303 has an elastic vibration effect, and is matched with the vibration motor B306 on the bottom of the screening net 305, so that the powdered building materials can be vibrated and screened. The particles with larger particle sizes screened out fall into the discharge hopper 307 for discharge due to the influence of the tilt, and the powdered building materials with qualified particle sizes after screening enter the discharge pipe 308, and finally the discharge is controlled by the electric valve 309. The specifications of the screening net 305 can be selected according to the actual operation. For example, if the particle size is less than 0.16 mm, the particle size less than 0.16 mm is regarded as qualified and can pass through the screening net 305 smoothly, thereby ensuring that the particle size of the weighed sample is not greater than 0.16 mm.

[0026] A mounting frame 4 is installed below the screening box 3, a weighing device 401 is installed at the top center of the mounting frame 4, a sampling box 402 is installed above the weighing device 401, the weighing device 401 is installed on the mounting frame 4, and the sampling box 402 is placed on the weighing device 401, the building materials after screening are discharged into the sampling box 402 under the control of the electric valve 309, and the electric valve 309 can be closed when the weighing device 401 weighs the appropriate weight.

[0027] Working principle: When using the utility model, two sets of crushing rollers 102 are correspondingly arranged on both sides of the crushing box 1 in a rotationally connected manner, and the crushing rollers 102 can be driven by a driving device, and a motor, a gear transmission connection and other equipment are used to complete the rotation of the crushing rollers 102. The building materials that need to be detected by radioactivity are put into the crushing box 1 from the feed hopper 101, and then crushed by the crushing rollers 102. The crushing box 1 is connected to the top of the grinding box 2, so that the crushed building materials in the crushing box 1 enter the grinding box 2. The grinding hammer is installed on the output shaft of the motor 204 on the grinding box 2. 205, and several grinding balls 206 on the grinding hammer 205 are arranged in the grinding groove 201 on the grinding box 2, so that the motor 204 drives the grinding hammer 205 to rotate, until the grinding balls 206 grind the building materials entering the grinding box 2. During this period, several balls 203 on the surface of the limit ring 202 in the grinding box 2 can support the grinding hammer 205 without affecting the rotation operation of the grinding hammer 205, and try to avoid the weight of the grinding hammer 205 from affecting the output shaft on the motor 204. At the same time, during the grinding process, the building materials can be affected by the vibration motor A on the grinding box 2 207 vibration effect, so that it is ground evenly, and the building materials in the grinding process are prevented from being blocked as much as possible. The screening box 3 is connected to the bottom of the grinding box 2 by the feed pipe 301, so that the ground powdered building materials can enter the screening box 3. The bottom of the mounting seat 304 is mounted on the top of the support plate 302 in the screening box 3 by two sets of springs 303, and one side of the screening net 305 is mounted on one side of the mounting seat 304 in a rotatable connection. The powdered building materials entering the screening box 3 naturally fall onto the surface of the screening net 305, and the spring 303 has elastic vibration. The vibration motor B306 at the bottom of the screening net 305 can be used to vibrate and screen the powdered building materials. The particles with larger particle sizes screened out fall into the discharge hopper 307 for discharge due to the inclination, while the powdered building materials with qualified particle sizes after screening enter the discharge pipe 308 and are finally discharged through the electric valve 309. The specifications of the screening net 305 can be selected according to the actual operation. For example, if the particle size is less than 0.16mm, the particle size less than 0.16mm is considered qualified and can pass through the screening net 305 smoothly, thereby ensuring that the particle size of the weighed sample is not greater than 0.16mm, by installing a weighing device 401 on the mounting frame 4, and placing a sampling box 402 on the weighing device 401, the building materials to be screened are discharged into the sampling box 402 by the electric valve 309, and the electric valve 309 is closed when the weighing device 401 weighs the appropriate weight. No relevant technical personnel are required to operate during the complete set of operations, and the test samples for radioactivity detection of building materials are fully automatically prepared, which saves sample preparation time and manpower input during the test process, effectively improves the use effect of the automatic sample preparation equipment for radioactivity detection of building materials, and also effectively improves the sample preparation efficiency of the automatic sample preparation equipment for radioactivity detection of building materials. .

[0028] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automatic sample preparation device for radioactivity detection of building materials, comprising a crushing box (1), characterized in that: A feed hopper (101) is installed on the top of the crushing box (1), crushing rollers (102) are rotatably connected to both sides of the crushing box (1), a grinding box (2) is installed at the bottom of the crushing box (1), grinding grooves (201) are opened on the inner wall of the grinding box (2), a limit ring (202) is arranged at the center of the bottom end of the grinding box (2), and a screening box (3) is installed below the grinding box (2); Feed pipes (301) are provided on both sides of the top of the screening box (3), the top of the feed pipe (301) is fixedly connected to the bottom of the grinding box (2), a support plate (302) is installed below the inner wall of one side of the screening box (3), a spring (303) is provided on the top of the support plate (302), and a mounting frame (4) is installed below the screening box (3).

2. The automatic sample preparation equipment for radioactivity detection of building materials according to claim 1 is characterized in that: The upper surface of the limiting ring (202) is rotatably connected to a ball bearing (203), a motor (204) is installed at the bottom center of the grinding box (2), and a grinding hammer (205) is installed on the output shaft of the motor (204).

3. The automatic sample preparation equipment for radioactivity detection of building materials according to claim 2 is characterized in that: Grinding balls (206) are arranged on the outer wall of the grinding hammer (205), and vibration motors A (207) are installed on both sides of the front end surface of the grinding box (2).

4. The automatic sample preparation equipment for radioactivity detection of building materials according to claim 1 is characterized in that: A mounting seat (304) is installed on the top of the spring (303), a screening net (305) is rotatably connected to the outer wall of one side of the mounting seat (304), a vibration motor B (306) is installed on the bottom side of the screening net (305), a discharge hopper (307) is installed below the outer wall of one side of the screening box (3), a discharge pipe (308) is installed at the bottom of the screening box (3), and an electric valve (309) is provided on the outer wall of the discharge pipe (308).

5. The automatic sample preparation equipment for radioactivity detection of building materials according to claim 1 is characterized by: A weighing device (401) is installed at the top center of the mounting frame (4), and a sampling box (402) is installed above the weighing device (401).

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