A sampling device for refractory brick detection

Abstract

The present invention provides a sampling device for refractory brick inspection, which relates to the field of material sampling technology. The device comprises a main body and a drill barrel with a vertical axis. Water is supplied to the lower end of the drill barrel and the sampling teeth through a water supply hole for cooling and lubrication. After the first sampling, continuous water supply may cause accumulation in the sampling trough. When sampling is performed subsequently, the through hole closest to the lower end of the drill barrel is first opened, and the negative pressure chamber sucks the water accumulated in the sampling trough through the through hole. At the same time, the drill barrel continues to drill into the refractory brick. The movable part in the through hole closest to the lower end of the drill barrel contacts the sample. The through hole is closed, losing the water suction function, ensuring that the water accumulated in the sampling trough is within a certain range, thereby satisfying the function of cooling and lubricating the lower end of the drill barrel and the sampling teeth, and preventing the sample taken out later from being over-soaked, reducing the subsequent drying work, and reducing irreversible damage to the sample, such as strength loss and loose structure.

Description

Technical Field

[0001] The invention relates to the technical field of material sampling, in particular to a sampling device for detecting refractory bricks. Background Art

[0002] Refractory bricks are a building material that maintains structural stability and reliable performance in high-temperature environments. They are widely used in various industrial furnaces and thermal equipment. Due to different usage environments and functional requirements, there are many types of refractory bricks, among which standard refractory bricks (square bricks) are the most common.

[0003] During the production process of refractory bricks, samples must be taken before performance testing. Samples must generally be dried to a constant weight beforehand, for example, before measuring refractoriness under load. Existing techniques typically use a coring drill to continuously extract multiple cylindrical samples from refractory bricks. Water is often required during the drilling process to ensure cooling and lubrication of the drill bit. Continuous water supply can cause accumulation in the sampling trough, resulting in over-soaking of subsequent samples, increasing the subsequent drying effort and potentially causing irreversible damage to the samples, such as reduced strength and loose structure.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] Based on this, it is necessary to provide a sampling device for refractory brick detection to address the problems existing in the current refractory brick sampling device.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A sampling device for detecting refractory bricks comprises a device body and a drill barrel with a vertical axis, the device body having an output end, the output end being connected to the upper end of the drill barrel to drive the drill barrel to rotate, the lower end of the drill barrel being open and provided with sampling teeth for drilling samples, a storage chamber for storing samples being formed in the drill barrel; a water supply hole and a negative pressure chamber being formed in the side wall of the drill barrel, the water supply hole extending to the lower end of the drill barrel, a plurality of through holes being formed on the inner wall of the drill barrel at equal intervals along its axial direction, the two ends of the through holes being respectively connected to the negative pressure chamber and the storage chamber, a movable part being provided in the through hole, the movable part being able to switch between a first state and a second state, wherein when in the first state, the sample in the storage chamber does not contact the movable part and the through hole is open, and when in the second state, the sample in the storage chamber contacts the movable part and the through hole is closed.

[0008] Furthermore, the movable member can switch between the second state and a third state. When in the third state, the movable member extends into the storage cavity to carry the sample in the storage cavity, and the through hole is closed.

[0009] Furthermore, the through hole is inclined from top to bottom and from inside to outside, and the movable part includes a first section and a second section connected in an L shape, the first section is located in the negative pressure chamber, and the second section is arranged along the through hole and can extend into the storage chamber; when the movable part is in the first state, the first section is away from the through hole, and there is a gap between the second section and the upper and lower hole walls of the through hole; when the movable part is in the second state, the sample in the storage chamber contacts the second section and retracts it into the through hole; when the movable part is in the third state, the first section abuts against the through hole, and the second section abuts against the lower hole wall of the through hole.

[0010] Furthermore, an elastic member is provided in the negative pressure chamber, one end of the elastic member is connected to the drill barrel, and the other end is connected to the first section. The elastic member causes the movable member to have a tendency to be in the first state. When the movable member is in the second state, the elastic member is compressed. When the movable member is in the third state, the elastic member is stretched.

[0011] Furthermore, the distance between two adjacent through holes along the axial direction of the drill barrel is greater than the size of the sample along the axial direction of the drill barrel.

[0012] Furthermore, the negative pressure chambers and the through holes are arranged at equal intervals along the circumference of the drill barrel and are arranged in equal numbers.

[0013] Furthermore, a plurality of water supply holes are arranged at equal intervals along the circumference of the drill barrel.

[0014] Furthermore, the number of the water supply holes is equal to the number of the negative pressure chambers, and the negative pressure chambers and the water supply holes are staggered along the circumference of the drill tube.

[0015] Furthermore, the upper end of the drill barrel is open and removably provided with a cover, and the cover is provided with a water pipe joint and a negative pressure joint, one end of the water pipe joint is connected to the water supply hole, and the other end of the water pipe joint is connected to an external water source, one end of the negative pressure joint is connected to the negative pressure chamber, and the other end of the negative pressure joint is connected to an external negative pressure source.

[0016] Furthermore, a first ring body and a second ring body are rotatably provided on the cover, a water supply ring cavity is formed in the first ring body, the water pipe joint is connected with the water supply hole through the water supply ring cavity, and a negative pressure ring cavity is formed in the second ring body, the negative pressure joint is connected with the negative pressure cavity through the negative pressure ring cavity.

[0017] The beneficial effect of the present invention is that the present invention supplies water to the lower end of the drill barrel and the sampling teeth through the water supply hole for cooling and lubrication. After the first sampling, the continuous water supply may cause accumulation in the sampling trough. When sampling is performed subsequently, the through hole closest to the lower end of the drill barrel is first opened, and the negative pressure chamber sucks the water accumulated in the sampling trough through the through hole. At the same time, the drill barrel continues to drill into the refractory brick, and the movable part in the through hole closest to the lower end of the drill barrel contacts the sample. The through hole is closed and loses the water suction function, ensuring that the water accumulated in the sampling trough is within a certain range, thereby satisfying the function of cooling and lubricating the lower end of the drill barrel and the sampling teeth, and preventing the samples taken out later from being over-soaked, reducing the subsequent drying work, and reducing irreversible damage to the samples such as strength loss and loose structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the overall structure of a sampling device for detecting refractory bricks provided in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Axonometric view of the drill barrel in the sampling device for testing refractory bricks;

[0020] Figure 3 for Figure 2 A top view of

[0021] Figure 4 for Figure 3 Cross-sectional view along the AA axis;

[0022] Figure 5 for Figure 3 Cross-sectional view along the BB direction;

[0023] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0024] Figure 7 for Figure 5 A partial enlarged view of point D in the middle;

[0025] Figure 8 for Figure 5 A partial enlarged view of point E in the middle;

[0026] Figure 9 It is a structural diagram of the movable parts;

[0027] Figure 10 for Figure 5 Another state diagram of ;

[0028] Figure 11 for Figure 4 Schematic diagram of the structure of the middle cover;

[0029] Figure 12 for Figure 11 A partial enlarged view of point F in the middle;

[0030] Figure 13 for Figure 5 Schematic diagram of the structure of the middle cover;

[0031] Figure 14 for Figure 13 A partial enlarged view of point G in the middle.

[0032] in:

[0033] 100. Device body; 101. Drill barrel; 102. Sampling tooth; 103. Storage chamber;

[0034] 200, water supply hole; 201, negative pressure chamber; 202, through hole; 203, movable part; 204, first section; 205, second section; 206, elastic part; 207, arc plate; 208, mounting groove; 209, mounting plate; 210, sealing cover; 211, water pipe joint; 212, negative pressure joint; 213, first ring body; 214, second ring body; 215, water supply ring cavity; 216, negative pressure ring cavity; 217, first ring groove; 218, second ring groove; 219, fan-shaped hole; 220, circular hole; 221, connecting hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0037] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0038] like Figures 1 to 14 As shown, an embodiment of the present invention provides a sampling device for refractory brick detection, comprising a device body 100 and a drill tube 101 with a vertical axis. The device body 100 has an output end, which is connected to the upper end of the drill tube 101 to drive the drill tube 101 to rotate. The lower end of the drill tube 101 is open and is provided with a sampling tooth 102 for drilling samples. A storage cavity 103 for storing samples is formed in the drill tube 101; a water supply hole 200 and a negative pressure cavity 201 are formed in the side wall of the drill tube 101, and the water supply hole 200 extends to At the lower end of the drill barrel 101, a plurality of through holes 202 are provided on the inner wall of the drill barrel 101 at equal intervals along its axial direction. The two ends of the through hole 202 are respectively connected to the negative pressure chamber 201 and the storage chamber 103. A movable part 203 is provided in the through hole 202. The movable part 203 can switch between a first state and a second state. When in the first state, the sample in the storage chamber 103 does not contact the movable part 203, and the through hole 202 is open. When in the second state, the sample in the storage chamber 103 contacts the movable part 203, and the through hole 202 is closed.

[0039] Water is supplied to the lower end of the drill barrel 101 and the sampling teeth 102 through the water supply hole 200 for cooling and lubrication. After the first sampling, the continuous water supply may cause accumulation in the sampling trough. When sampling is performed subsequently, the through hole 202 closest to the lower end of the drill barrel 101 is first opened, and the negative pressure chamber 201 sucks the water accumulated in the sampling trough through the through hole 202. At the same time, the drill barrel 101 continues to drill into the refractory brick. The movable part 203 in the through hole 202 closest to the lower end of the drill barrel 101 contacts the sample. The through hole 202 is closed, losing its water suction function, ensuring that the water accumulated in the sampling trough is within a certain range, thereby satisfying the cooling and lubrication of the lower end of the drill barrel 101 and the sampling teeth 102, and preventing the samples taken out later from being over-soaked, reducing the subsequent drying work, and reducing irreversible damage to the samples such as strength loss and loose structure.

[0040] It is worth noting that during the first sampling, since the through hole 202 closest to the lower end of the drill barrel 101 is some distance away from the lower end of the drill barrel 101 and no deep sampling groove is formed on the refractory bricks, there is not much water accumulated in the sampling groove. At this time, it is impossible and unnecessary to extract the water accumulated in the sampling groove through the through hole 202 closest to the lower end of the drill barrel 101. During the subsequent sampling, the following process is followed: the through hole 202 closest to the lower end of the drill barrel 101 is first opened to suck out the water accumulated in the sampling groove. Then, the movable part 203 in the through hole 202 closest to the lower end of the drill barrel 101 contacts the outer surface of the sample. At the same time, the outer surface of the sample abuts the inner wall of the drill barrel 101, closing the through hole 202 and losing its water suction function. At this time, when there is a lot of water accumulated in the sampling groove, the second through hole 202 closest to the lower end of the drill barrel 101 can also suck out cooling water to further keep the water accumulated in the sampling groove within a certain range.

[0041] In addition, after the drill tube 101 completes each sampling, the sample is located in the storage chamber 103. The negative pressure environment in the storage chamber 103 sucks the sample toward the upper end of the drill tube 101 to free up the lower space of the storage chamber 103 for the next sampling.

[0042] The water supply hole 200 supplies water to the lower end of the drill tube 101 and the sampling teeth 102 for cooling and lubrication. At the same time, the water can also flush out the refractory brick debris generated by sampling in the sampling groove, thereby facilitating chip removal.

[0043] The device body 100 can be a conventional drilling machine, comprising a motor and a transmission device, equipped with a corresponding power supply and controller. The transmission device transmits the motor power to the drill barrel 101, achieving speed / torque conversion, and is provided with a corresponding feed mechanism to drive the drill barrel 101 up and down. The device body 100 is provided with a vise for securing refractory bricks, and the vise can also be adjusted in position. After the drill barrel 101 completes each sampling, the device body 100 is controlled to raise the drill barrel 101 by one end, and then the drill barrel 101 is again controlled to drill into the refractory bricks for the next sampling. In addition, when the drill tube 101 reaches a preset depth, that is, the current depth is the desired thickness of the sample, drilling stops. At this time, the connection between the sample and the refractory brick can be broken to obtain the sample. The specific breaking method can be a wedge method, where a thin chisel or a special wedge-shaped tool is inserted into the gap between the inner wall of the drill tube 101 and the sample, and the chisel is gently struck to apply lateral force to the root of the sample; or a twisting method is used, where the drill tube 101 is kept rotating and shear force is generated by slightly swinging and twisting the drill tube 101. Of course, other existing methods can also be used to finally obtain the sample.

[0044] The length of the drill tube 101 and the number of through holes 202 and movable parts 203 can be set as needed to achieve continuous drilling and sampling multiple times using the same drill tube 101 .

[0045] Preferably, see Figure 5 The movable member 203 can switch between a second state and a third state. When in the third state, the movable member 203 extends into the storage chamber 103 to carry the sample in the storage chamber 103, and the through hole 202 is closed.

[0046] In the process of the negative pressure environment in the storage chamber 103 sucking the sample toward the upper end of the drill tube 101, the sample passes over the movable part 203 at the storage position and is carried by the movable part 203. At the same time, the through hole 202 is closed to prevent the through hole 202 from sucking the water accumulated in the sampling trough, thereby preventing the sample from contacting water again and being soaked.

[0047] Preferably, the through hole 202 is arranged obliquely from top to bottom and from inside to outside, and the movable part 203 includes a first section 204 and a second section 205 connected in an L-shape. The first section 204 is located inside the negative pressure chamber 201, and the second section 205 is arranged along the through hole 202 and can extend into the storage chamber 103.

[0048] When the movable part 203 is in the first state, the first section 204 is away from the through hole 202, and there is a gap between the second section 205 and the upper and lower walls of the through hole 202; when the movable part 203 is in the second state, the sample in the storage chamber 103 contacts the second section 205 and retracts it into the through hole 202; when the movable part 203 is in the third state, the first section 204 abuts against the through hole 202, and the second section 205 abuts against the lower wall of the through hole 202.

[0049] At the start of sampling after the first, see Figure 5 、 Figure 6 The movable member 203 in the through hole 202 closest to the lower end of the drill tube 101 is in the first state, that is, the first section 204 is away from the through hole 202, and there is a gap between the second section 205 and the upper and lower walls of the through hole 202. At this time, the through hole 202 connects the storage chamber 103 with the negative pressure chamber 201 to suck the water accumulated in the sampling tank. At the same time, the drill tube 101 continues to drill into the refractory bricks, and the negative pressure environment in the storage chamber 103 sucks the sample toward the upper end of the drill tube 101. Figure 5, and 7, the movable member 203 in the through hole 202 closest to the lower end of the drill tube 101 is in the second state, the outer surface of the sample contacts the second section 205 and retracts it into the through hole 202, the outer surface of the sample abuts the inner wall of the drill tube 101 to close the through hole 202, and loses the water suction function until the sample passes over and presses on the second section 205, while the first section 204 abuts the through hole 202, the second section 205 abuts the lower hole wall of the through hole 202, and the through hole 202 continues to be closed, see Figure 5 、 Figure 8 .

[0050] The circumferential dimension of through hole 202 in the drill barrel 101 is equal to or slightly larger than the circumferential dimension of first section 204 and second section 205 in the drill barrel 101. When movable member 203 is in the third state, first section 204 and second section 205 can close through hole 202. The inclination of the upper wall of through hole 202 is greater than that of the lower wall, so that when movable member 203 is in the first state, through hole 202 is in an open state, and when movable member 203 is in the third state, through hole 202 is in a closed state.

[0051] Preferably, an elastic member 206 is provided in the negative pressure chamber 201, one end of the elastic member 206 is connected to the drill pipe 101, and the other end is connected to the first section 204. The elastic member 206 makes the movable member 203 tend to be in the first state. When the movable member 203 is in the second state, the elastic member 206 is compressed. When the movable member 203 is in the third state, the elastic member 206 is stretched. The elastic member 206 restores the movable member 203 from the second state or the third state to the first state.

[0052] Preferably, the distance between two adjacent through holes 202 along the axial direction of the drill tube 101 is greater than the size of the sample along the axial direction of the drill tube 101, so that adjacent samples in the storage cavity 103 are spaced apart to avoid collision or wear.

[0053] Preferably, the negative pressure chambers 201 and the through holes 202 are arranged at equal intervals along the circumference of the drill tube 101 and are arranged in equal numbers to increase the negative pressure suction capacity and improve the suction speed of the sample and water.

[0054] Among them, see Figure 2 、 Figure 5An arc-shaped plate 207 is bolted to the outer wall of the drill tube 101. A negative pressure chamber 201 is formed between the arc-shaped plate 207 and the drill tube 101. The negative pressure chamber 201 is fan-shaped. A water supply hole 200 is provided on the side wall of the drill tube 101 along the axial direction of the drill tube 101. A mounting slot 208 is provided on the arc-shaped plate 207. A mounting plate 209 is provided at one end of the elastic member 206. The mounting plate 209 is inserted into the mounting slot 208. The mounting slot 208 and the through hole 202 are inclined in the same direction and are located below the through hole 202. The elastic member 206 is hollowed out and bent multiple times to form a corrugated shape. The elastic member 206 expands and contracts along the line connecting the mounting slot 208 and the through hole 202. In addition, the mounting plate 209, the elastic member 206, and the movable member 203 are formed as an integrally formed metal sheet. The elasticity of the movable member 203 is less than that of the elastic member 206.

[0055] Preferably, see Figure 3 A plurality of water supply holes 200 are arranged at equal intervals along the circumference of the drill barrel 101 to increase the water supply and achieve more uniform cooling and lubrication of the drill bit in the circumference of the drill bit.

[0056] The sampling teeth 102 may be arranged at intervals to avoid the water supply hole 200 .

[0057] Preferably, the number of water supply holes 200 is equal to the number of negative pressure chambers 201, and the negative pressure chambers 201 and the water supply holes 200 are staggered along the circumference of the drill barrel 101 to arrange the water supply holes 200 and the negative pressure chambers 201 more reasonably in the drill barrel 101.

[0058] The horizontal cross-section of the water supply hole 200 is preferably circular to facilitate water circulation; the horizontal cross-section of the negative pressure chamber 201 is preferably fan-shaped to provide a larger negative pressure chamber 201 .

[0059] Preferably, see Figure 2 、 Figure 4 、 Figure 5 ,as well as Figures 11 to 14 The upper end of the drill barrel 101 is open and detachably provided with a cover 210. The cover 210 is provided with a water pipe connector 211 and a negative pressure connector 212. One end of the water pipe connector 211 is in communication with the water supply hole 200, and the other end of the water pipe connector 211 is connected to an external water source. One end of the negative pressure connector 212 is in communication with the negative pressure chamber 201, and the other end of the negative pressure connector 212 is connected to an external negative pressure source. The water pipe connector 211 is conveniently connected to an external water source to supply water to the water supply hole 200, and the negative pressure connector 212 is conveniently connected to an external negative pressure source to provide a negative pressure environment for the negative pressure chamber 201. After all sampling is completed, the cover 210 is removed from the upper end of the drill barrel 101, and the drill barrel 101 is inverted to pour the samples out of the upper end of the drill barrel 101 in sequence.

[0060] The cover 210 is detachably connected to the upper end of the drill bit via threads and is provided with a sealing structure.

[0061] Preferably, a first ring body 213 and a second ring body 214 are rotatably provided on the cover 210, a water supply ring cavity 215 is formed in the first ring body 213, and the water pipe joint 211 is connected with the water supply hole 200 through the water supply ring cavity 215, and a negative pressure ring cavity 216 is formed in the second ring body 214, and the negative pressure joint 212 is connected with the negative pressure cavity 201 through the negative pressure ring cavity 216.

[0062] When the output end of the device body 100 drives the drill pipe 101 to rotate, the first ring body 213 and the second ring body 214 may not rotate, so as to facilitate the setting of relevant pipelines to realize water supply and provide a negative pressure environment.

[0063] A first annular groove 217 is formed on the lower surface of the first ring body 213, and a plurality of circular holes 220 are formed on the cover 210 at equal intervals along its circumference. The upper end of the first annular groove 217 communicates with the water supply annular cavity 215, and the lower end of the first annular groove 217 communicates with the water supply hole 200 through the circular hole 220. A second annular groove 218 is formed on the lower surface of the second ring body 214, and a plurality of fan-shaped holes 219 are formed on the cover 210 at equal intervals along its circumference. A connecting hole 221 is formed between the first and second ring bodies 213, 214, and the cover 210. The upper end of the second annular groove 218 communicates with the negative pressure annular cavity 216, and the lower end of the second annular groove 218 communicates with the negative pressure cavity 201 through the connecting hole 221 and the fan-shaped hole 219.

[0064] When the present invention is in use, it is connected to an external water source through the water pipe joint 211 to supply water to the water supply hole 200, so as to supply water to the lower end of the drill barrel 101 and the sampling tooth 102 for cooling and lubrication; and is connected to an external negative pressure source through the negative pressure joint 212 to provide a negative pressure environment for the negative pressure chamber 201.

[0065] After the first sampling, continuous water supply may cause accumulation in the sampling tank. When sampling is performed subsequently, the movable part 203 in the through hole 202 closest to the lower end of the drill barrel 101 is in the first state, that is, the first section 204 is away from the through hole 202, and there is a gap between the second section 205 and the upper and lower hole walls of the through hole 202. At this time, the through hole 202 is in an open state, and the negative pressure chamber 201 sucks the water accumulated in the sampling tank through the through hole 202. At the same time, the drill barrel 101 continues to drill into the refractory brick, and the movable part 203 in the through hole 202 closest to the lower end of the drill barrel 101 contacts the outer surface of the sample. At the same time, the outer surface of the sample The movable part 203 in the through hole 202 abuts against the inner wall of the drill barrel 101 and is in the second state. The outer surface of the sample contacts the second section 205 and retracts it into the through hole 202. The outer surface of the sample abuts against the inner wall of the drill barrel 101 to close the through hole 202, losing the water suction function, ensuring that the water accumulated in the sampling groove is within a certain range, thereby satisfying the function of cooling and lubricating the lower end of the drill barrel 101 and the sampling teeth 102, and avoiding excessive soaking of the sample taken out later, reducing the subsequent drying work, and reducing irreversible damage to the sample such as strength loss and loose structure.

[0066] After the drill tube 101 completes each sampling, the sample is located in the storage chamber 103. The negative pressure environment in the storage chamber 103 sucks the sample toward the upper end of the drill tube 101, so as to free up the lower space of the storage chamber 103 for the next sampling. In the process of the sample moving upward, the sample passes over the movable part 203 from bottom to top, so that the movable part 203 below the storage position is switched from the first state to the second state, and then to the first state, and the movable part 203 at the storage position is switched from the first state to the second state, and then to the third state, that is, the sample passes over and is pressed on the second section 205. At the same time, the first section 204 abuts against the through hole 202, and the second section 205 abuts against the lower hole wall of the through hole 202. The movable part 203 carries the sample, and at the same time, the through hole 202 continues to be closed to prevent the through hole 202 from sucking the accumulated water in the sampling trough, thereby preventing the sample from being soaked in water again.

[0067] After all the sampling is completed, the cover 210 is removed from the upper end of the drill tube 101 , and the drill tube 101 is turned upside down to pour the samples out of the upper end of the drill tube 101 in sequence.

[0068] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A sampling device for refractory brick detection, characterized in that: The drill barrel comprises a device body and a drill tube with a vertical axis. The device body has an output end connected to the upper end of the drill tube to drive the drill tube to rotate. The lower end of the drill tube is open and provided with sampling teeth for drilling samples. A storage cavity for storing samples is formed in the drill tube. A water supply hole and a negative pressure chamber are formed in the side wall of the drill barrel, the water supply hole extends to the lower end of the drill barrel, and a plurality of through holes are opened on the inner wall of the drill barrel along its axial direction at equal intervals, and the two ends of the through holes are respectively connected to the negative pressure chamber and the storage chamber, and the through holes are inclined from top to bottom and from inside to outside. A movable part is provided in the through hole, and the movable part includes a first section and a second section connected in an L shape, the first section is located in the negative pressure chamber, and the second section is arranged along the through hole and can extend into the storage chamber; the movable part can switch between a first state and a second state, and is in the In the first state, the sample in the storage chamber does not contact the movable part, the first section is away from the through hole, there is a gap between the second section and the upper and lower walls of the through hole, and the through hole is open. In the second state, the sample in the storage chamber contacts the second section and retracts it into the through hole, and the through hole is closed. An elastic part is provided in the negative pressure chamber, one end of the elastic part is connected to the drill barrel, and the other end is connected to the first section. The elastic part makes the movable part tend to be in the first state. When the movable part is in the second state, the elastic part is compressed.

2. The sampling device for refractory brick detection according to claim 1, characterized in that: The movable part can switch between the second state and the third state. When in the third state, the movable part extends into the storage cavity to carry the sample in the storage cavity, the elastic part is stretched, the first section abuts against the through hole, the second section abuts against the lower hole wall of the through hole, and the through hole is closed.

3. The sampling device for refractory brick detection according to claim 1, characterized in that: The distance between two adjacent through holes along the axial direction of the drill barrel is greater than the size of the sample along the axial direction of the drill barrel.

4. The sampling device for refractory brick detection according to claim 1, characterized in that: The negative pressure chambers and the through holes are arranged at equal intervals along the circumference of the drill tube and are arranged in equal numbers.

5. The sampling device for refractory brick detection according to claim 4, characterized in that: A plurality of water supply holes are arranged at equal intervals along the circumference of the drill tube.

6. The sampling device for refractory brick detection according to claim 5, characterized in that: The number of the water supply holes is equal to the number of the negative pressure chambers, and the negative pressure chambers and the water supply holes are staggered along the circumference of the drill tube.

7. The sampling device for refractory brick detection according to claim 1, characterized in that: The upper end of the drill barrel is open and removably provided with a cover, and the cover is provided with a water pipe joint and a negative pressure joint. One end of the water pipe joint is connected to the water supply hole, and the other end of the water pipe joint is connected to an external water source. One end of the negative pressure joint is connected to the negative pressure chamber, and the other end of the negative pressure joint is connected to an external negative pressure source.

8. The sampling device for refractory brick detection according to claim 7, characterized in that: A first ring body and a second ring body are rotatably provided on the cover, a water supply ring cavity is formed in the first ring body, the water pipe joint is communicated with the water supply hole through the water supply ring cavity, a negative pressure ring cavity is formed in the second ring body, the negative pressure joint is communicated with the negative pressure cavity through the negative pressure ring cavity.

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