Sampling device for refractory brick detection

Abstract

The invention provides a sampling device for refractory brick detection, and relates to the technical field of material sampling, the sampling device comprises a device main body and a drill cylinder with a vertical axis, and water is supplied to the lower end of the drill cylinder and sampling teeth through a water supply hole for cooling and lubrication. After first sampling, continuous water supply may be accumulated in the sampling groove, during later sampling, the through hole closest to the lower end of the drilling barrel is in an open state firstly, the negative pressure cavity sucks water accumulated in the sampling groove through the through hole, meanwhile, the drilling barrel continues to drill into the refractory brick, and the movable part in the through hole closest to the lower end of the drilling barrel makes contact with a sample; the through hole is closed and loses a water suction function, and water accumulated in the sampling groove is ensured to be within a certain range, so that the lower end of the drill barrel and the sampling teeth can be cooled and lubricated, a sample taken out later can be prevented from being excessively soaked, the subsequent drying work is reduced, and the working efficiency is improved. And irreversible damages, such as strength reduction and structure looseness, to the sample are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of material sampling, and particularly to a sampling device for refractory brick detection. Background Art

[0002] Refractory bricks are building materials that can maintain stable structure and reliable performance in high-temperature environments, and are widely used in various industrial kilns 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 relatively common.

[0003] During the production process of refractory bricks, it is necessary to first sample the refractory bricks and then perform performance tests on the obtained samples. Generally, the samples need to be dried to a constant weight in advance, such as before measuring the data of the load softening temperature. In the prior art, a core drill bit is generally used to continuously take out multiple cylindrical samples on the refractory brick. During the drilling process, water is often required to ensure the cooling and lubrication of the drill bit. Continuous water supply may cause accumulation in the sampling groove, resulting in the samples taken later being over-soaked, increasing the subsequent drying work, and may also cause irreversible damage to the samples, such as a decrease in strength and a loose structure.

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

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

[0006] The above object is achieved by the following technical solutions: A sampling device for refractory brick detection includes a device main body and a drill barrel with a vertical axis. The device main body has an output end, and the output end is connected to the upper end of the drill barrel to drive the drill barrel to rotate. The lower end of the drill barrel is open and is provided with sampling teeth for drilling samples. A storage cavity for storing samples is formed inside the drill barrel. A water supply hole and a negative pressure cavity are formed inside the side wall of the drill barrel. The water supply hole extends to the lower end of the drill barrel. A plurality of through holes are equidistantly formed along the axial direction of the inner wall of the drill barrel. Both ends of the through hole are respectively communicated with the negative pressure cavity and the storage cavity. An activity member is arranged in the through hole. The activity member can switch between a first state and a second state. When in the first state, the sample in the storage cavity does not contact the activity member, and the through hole is opened. When in the second state, the sample in the storage cavity contacts the activity member, and the through hole is closed.

[0007] Further, the movable member can be switched between the second state and the 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.

[0008] Further, the through hole is inclined from top to bottom and from inside to outside. The movable member 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 cavity. When the movable member 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 member is in the second state, the sample in the storage cavity contacts the second section and causes it to retract into the through hole. When the movable member 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.

[0009] Further, an elastic member is provided in the negative pressure chamber. One end of the elastic member is connected to the drill cylinder, and the other end is connected to the first section. The elastic member makes the movable member tend 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.

[0010] Further, the distance between two adjacent through holes along the axial direction of the drill cylinder is greater than the size of the sample along the axial direction of the drill cylinder.

[0011] Further, the negative pressure chamber and the through holes are both arranged at equal intervals along the circumferential direction of the drill cylinder and the number of settings is equal.

[0012] Further, a plurality of water supply holes are arranged at equal intervals along the circumferential direction of the drill cylinder.

[0013] Further, 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 arranged alternately along the circumferential direction of the drill cylinder.

[0014] Further, the upper end of the drill cylinder is open and is detachably provided with a cover. A water pipe joint and a negative pressure joint are provided on the cover. One end of the water pipe joint is communicated with 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 communicated with the negative pressure chamber, and the other end of the negative pressure joint is connected to an external negative pressure source.

[0015] Further, 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, and 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, and the negative pressure joint is communicated with the negative pressure chamber through the negative pressure ring cavity.

[0016] The beneficial effects of the present invention are as follows: The present invention supplies water to the lower end of the drill cylinder and the sampling teeth through the water supply holes for cooling and lubrication. After the first sampling, continuous water supply may cause accumulation in the sampling groove. When sampling later, the through hole closest to the lower end of the drill cylinder is first in the open state, and the negative pressure chamber sucks the accumulated water in the sampling groove through the through hole. At the same time, the drill cylinder continues to drill into the refractory brick. The movable part in the through hole closest to the lower end of the drill cylinder contacts the sample, and this through hole closes, losing the function of sucking water, ensuring that the accumulated water in the sampling groove is within a certain range. Thus, it can not only meet the functions of cooling and lubricating the lower end of the drill cylinder and the sampling teeth, but also avoid the sample taken later from being over-soaked, reduce the subsequent drying work, and reduce irreversible damage to the sample such as a decrease in strength and structural looseness. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the sampling device for refractory brick detection provided by the embodiment of the present invention; Figure 2 is Figure 1 the axonometric view of the drill cylinder in the sampling device for refractory brick detection in Figure 3 is Figure 2 the top view of Figure 4 is Figure 3 the sectional view taken along the A-A direction in Figure 5 is Figure 3 the sectional view taken along the B-B direction in Figure 6 is Figure 5 the partial enlarged view at C in Figure 7 is Figure 5 the partial enlarged view at D in Figure 8 is Figure 5 the partial enlarged view at E in Figure 9 is the structural schematic diagram of the movable part; Figure 10 is Figure 5 another state diagram of Figure 11 is Figure 4 the structural schematic diagram of the cover in Figure 12 is Figure 11 the partial enlarged view at F in Figure 13 is Figure 5 the structural schematic diagram of the cover in Figure 14 is Figure 13 the partial enlarged view at G in

[0018] Wherein: 100, device main body; 101, drill pipe; 102, sampling teeth; 103, storage cavity; 200, water supply hole; 201, negative pressure cavity; 202, through hole; 203, movable part; 204, first section; 205, second section; 206, elastic part; 207, arc plate; 208, installation groove; 209, mounting plate; 210, 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, round hole; 221, connection hole. Detailed implementation manners

[0019] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, 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 used to limit the present invention.

[0020] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the objects described and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in the present invention, unless otherwise clearly specified and defined, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0021] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0022] Such as Figures 1 to 14As shown in the figure, an embodiment of the present invention provides a sampling device for refractory brick detection, including a device main body 100 and a drill cylinder 101 with a vertical axis. The device main body 100 has an output end, and the output end is connected to the upper end of the drill cylinder 101 to drive the drill cylinder 101 to rotate. The lower end of the drill cylinder 101 is open and is provided with sampling teeth 102 for drilling samples. A storage cavity 103 for storing samples is formed inside the drill cylinder 101. A water supply hole 200 and a negative pressure cavity 201 are formed inside the side wall of the drill cylinder 101. The water supply hole 200 extends to the lower end of the drill cylinder 101. A plurality of through holes 202 are equally spaced along the axial direction of the inner wall of the drill cylinder 101. Both ends of the through hole 202 are communicated with the negative pressure cavity 201 and the storage cavity 103 respectively. A movable member 203 is provided inside the through hole 202. The movable member 203 can switch between a first state and a second state. When in the first state, the sample in the storage cavity 103 does not contact the movable member 203, and the through hole 202 is opened. When in the second state, the sample in the storage cavity 103 contacts the movable member 203, and the through hole 202 is closed.

[0023] Water is supplied through the water supply hole 200 to the lower end of the drill cylinder 101 and the sampling teeth 102 for cooling and lubrication. After the first sampling, continuous water supply may cause accumulation in the sampling groove. During subsequent sampling, the through hole 202 closest to the lower end of the drill cylinder 101 is first in the open state. The negative pressure cavity 201 sucks the accumulated water in the sampling groove through the through hole 202. At the same time, the drill cylinder 101 continues to drill into the refractory brick. The movable member 203 in the through hole 202 closest to the lower end of the drill cylinder 101 contacts the sample, and this through hole 202 is closed, losing the function of sucking water, ensuring that the accumulated water in the sampling groove is within a certain range, so that it can not only meet the functions of cooling and lubricating the lower end of the drill cylinder 101 and the sampling teeth 102, but also avoid the sample taken later from being over-soaked, reducing the subsequent drying work and reducing irreversible damage to the sample such as a decrease in strength and structural looseness.

[0024] It should be noted that during the first sampling, since the through hole 202 closest to the lower end of the drill cylinder 101 has a certain distance from the lower end of the drill cylinder 101 and no deep sampling groove is formed on the refractory brick, there is also not much water accumulated in the sampling groove. At this time, it is impossible and unnecessary to suck the accumulated water in the sampling groove through the through hole 202 closest to the lower end of the drill cylinder 101. During subsequent samplings, the following process is the same: the through hole 202 closest to the lower end of the drill cylinder 101 is first in the open state to suck the accumulated water in the sampling groove. Then the movable member 203 in the through hole 202 closest to the lower end of the drill cylinder 101 contacts the outer surface of the sample, and at the same time, the outer surface of the sample abuts against the inner wall of the drill cylinder 101, closing this through hole 202 and losing the function of sucking water. At this time, when there is more water accumulated in the sampling groove, the through hole 202 second closest to the lower end of the drill cylinder 101 can also suck the cooling water to further keep the accumulated water in the sampling groove within a certain range.

[0025] In addition, after each sampling by the drill barrel 101, the sample is located in the storage cavity 103. The negative pressure environment in the storage cavity 103 sucks the sample towards the upper end of the drill barrel 101, so as to vacate the lower space of the storage cavity 103 for the next sampling.

[0026] Among them, while the water supply hole 200 supplies water to the lower end of the drill barrel 101 and the sampling teeth 102 for cooling and lubrication, the water can also flush out the refractory brick debris generated by sampling in the sampling groove, so as to facilitate chip removal.

[0027] Among them, the device main body 100 can be a drill press in the prior art, which includes a motor and a transmission device, is configured with corresponding power supply and a controller. The transmission device transmits the power of the motor to the drill barrel 101 to realize the conversion of speed / torque, and is provided with a corresponding feeding mechanism to drive the drill barrel 101 to move up and down. A vise is provided on the device main body 100 for fixing the refractory brick, and the vise can also be adjusted in position; after each sampling by the drill barrel 101, the control device main body 100 lifts the drill barrel 101 by a certain distance, and then controls the drill barrel 101 to drill into the refractory brick again for the next sampling. In addition, when the drill barrel 101 drills to a preset depth, that is, the current depth is the required thickness of the sample, stop drilling downward. At this time, the connection between the sample and the refractory brick can be broken to obtain the sample. The specific breaking method can adopt the wedging method, insert a thin chisel or a special wedge tool into the gap between the inner side wall of the drill barrel 101 and the sample, and gently tap the chisel to make the lateral force act on the root of the sample; or adopt the torsion method, keep the drill barrel 101 rotating, and generate a shearing force through the small swing and torsion of the drill barrel 101. Of course, other existing methods can also be used to finally obtain the sample.

[0028] Among them, the length of the drill barrel 101 and the number of the through holes 202 and the movable parts 203 can be selected and set as needed, so as to realize continuous multiple drilling samplings with the same drill barrel 101.

[0029] Preferably, referring to Figure 5 , the movable part 203 can be switched between the second state and the third state. When in the third state, the movable part 203 extends into the storage cavity 103 to carry the sample in the storage cavity 103, and the through hole 202 is closed.

[0030] During the process that the negative pressure environment in the storage cavity 103 sucks the sample towards the upper end of the drill barrel 101, the sample passes by the movable part 203 at the intended storage position and is carried by the movable part 203. At the same time, the through hole 202 is closed, avoiding the through hole 202 from sucking the water accumulated in the sampling groove, so as to prevent the sample from contacting water again and being soaked.

[0031] Preferably, the through hole 202 is inclined from top to bottom and from inside to outside. The movable member 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.

[0032] When the movable member 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 hole walls of the through hole 202. When the movable member 203 is in the second state, the sample in the storage chamber 103 contacts the second section 205 and causes it to retract into the through hole 202. When the movable member 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 hole wall of the through hole 202.

[0033] At the start of sampling after the first time, referring to Figure 5 、 Figure 6 , the movable member 203 in the through hole 202 closest to the lower end of the drill pipe 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 connects the storage chamber 103 with the negative pressure chamber 201 to suck the accumulated water in the sampling groove. At the same time, the drill pipe 101 continues to drill into the refractory brick, and the negative pressure environment in the storage chamber 103 sucks the sample towards the upper end of the drill pipe 101. Referring to Figure 5 、and 7, the movable member 203 in the through hole 202 closest to the lower end of the drill pipe 101 is in the second state, the outer surface of the sample contacts the second section 205 and causes it to retract into the through hole 202, and the outer surface of the sample abuts against the inner wall of the drill pipe 101 to close the through hole 202, losing the function of sucking water until the sample passes over and presses 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, and the through hole 202 remains closed. Referring to Figure 5 、 Figure 8 .

[0034] Wherein, the dimension of the through hole 202 in the circumferential direction of the drill pipe 101 is equal to or slightly larger than the dimensions of the first section 204 and the second section 205 in the circumferential direction of the drill pipe 101. When the movable member 203 is in the third state, the first section 204 and the second section 205 can close the through hole 202. The inclination degree of the upper hole wall of the through hole 202 is greater than that of the lower hole wall, so that when the movable member 203 is in the first state, the through hole 202 is in an open state, and when the movable member 203 is in the third state, the through hole 202 is in a closed state.

[0035] 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 causes the movable member 203 to 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 causes the movable member 203 to return from the second state or the third state to the first state.

[0036] Preferably, the axial distance between two adjacent through holes 202 along the drill pipe 101 is greater than the axial dimension of the sample along the drill pipe 101, so that adjacent samples in the storage chamber 103 are spaced apart to avoid collision or abrasion.

[0037] Preferably, the negative pressure chamber 201 and the through holes 202 are both arranged at equal intervals in the circumferential direction of the drill pipe 101 and have the same number of settings, so as to increase the negative pressure suction capacity and improve the suction speed of the sample and water.

[0038] Among them, referring to Figure 2 、 Figure 5 An arc-shaped plate 207 is installed on the outer wall of the drill pipe 101 through bolts. A negative pressure chamber 201 is formed between the arc-shaped plate 207 and the drill pipe 101, and the negative pressure chamber 201 is fan-shaped. The water supply hole 200 is axially opened on the side wall of the drill pipe 101. An installation groove 208 is opened on the arc-shaped plate 207. One end of the elastic member 206 is provided with an installation plate 209, and the installation plate 209 is inserted into the installation groove 208. The inclination direction of the installation groove 208 is the same as that of the through hole 202, and the installation groove 208 is 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 connection line of the installation groove 208 and the through hole 202. In addition, the installation plate 209, the elastic member 206 and the movable member 203 are integrally formed metal sheets, and the elasticity of the movable member 203 is less than that of the elastic member 206.

[0039] Preferably, referring to Figure 3 a plurality of water supply holes 200 are arranged at equal intervals in the circumferential direction of the drill pipe 101 to increase the water supply volume and make the cooling and lubrication of the drill bit more uniform in the circumferential direction of the drill bit.

[0040] Among them, the sampling teeth 102 can be arranged at intervals to avoid the water supply holes 200.

[0041] Preferably, the number of the water supply holes 200 is equal to the number of the negative pressure chambers 201, and the negative pressure chambers 201 and the water supply holes 200 are arranged alternately in the circumferential direction of the drill pipe 101 to arrange the water supply holes 200 and the negative pressure chambers 201 more reasonably in the drill pipe 101.

[0042] Among them, the horizontal cross-section of the water supply hole 200 is preferably circular to facilitate the flow of water; the horizontal cross-section of the negative pressure chamber 201 is preferably fan-shaped to provide a larger negative pressure chamber 201.

[0043] Preferably, referring to Figure 2 , Figure 4 , Figure 5 , and Figures 11 to 14 , the upper end of the drill pipe 101 is open and detachably provided with a cover 210. The cover 210 is provided with a water pipe joint 211 and a negative pressure joint 212. One end of the water pipe joint 211 is communicated with the water supply hole 200, and the other end of the water pipe joint 211 is connected to an external water source. One end of the negative pressure joint 212 is communicated with the negative pressure chamber 201, and the other end of the negative pressure joint 212 is connected to an external negative pressure source. It is convenient to connect with an external water source through the water pipe joint 211 to supply water to the water supply hole 200, and it is convenient to connect with an external negative pressure source through the negative pressure joint 212 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 pipe 101, and the drill pipe 101 is inverted to pour out the samples from the upper end of the drill pipe 101 in sequence.

[0044] Among them, the cover 210 is detachably connected to the upper end of the drill bit by a thread and is provided with a sealing structure.

[0045] 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 inside the first ring body 213. The water pipe joint 211 is communicated with the water supply hole 200 through the water supply ring cavity 215. A negative pressure ring cavity 216 is formed inside the second ring body 214. The negative pressure joint 212 is communicated with the negative pressure chamber 201 through the negative pressure ring cavity 216.

[0046] When the output end of the device main body 100 drives the drill pipe 101 to rotate, the first ring body 213 and the second ring body 214 can not rotate, so as to facilitate the setting of relevant pipelines to realize water supply and provide a negative pressure environment.

[0047] Among them, a first ring groove 217 is opened on the lower surface of the first ring body 213. A plurality of circular holes 220 are equidistantly opened along the circumference of the cover 210. The upper end of the first ring groove 217 is communicated with the water supply ring cavity 215, and the lower end of the first ring groove 217 is communicated with the water supply hole 200 through the circular holes 220. A second ring groove 218 is opened on the lower surface of the second ring body 214. A plurality of fan-shaped holes 219 are equidistantly opened along the circumference of the cover 210. A connection hole 221 is formed between the first ring body 213, the second ring body 214 and the cover 210. The upper end of the second ring groove 218 is communicated with the negative pressure ring cavity 216, and the lower end of the second ring groove 218 is communicated with the negative pressure chamber 201 through the connection hole 221 and the fan-shaped holes 219.

[0048] When the present invention is in use, it is connected to an external water source through a water pipe joint 211 to supply water to a water supply hole 200, so as to supply water to the lower end of a drill cylinder 101 and sampling teeth 102 for cooling and lubrication; it is connected to an external negative pressure source through a negative pressure joint 212 to provide a negative pressure environment for a negative pressure chamber 201.

[0049] After the first sampling, continuous water supply may cause accumulation in the sampling groove. When sampling later, the movable member 203 in the through hole 202 closest to the lower end of the drill cylinder 101 is in a 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 accumulated water in the sampling groove through the through hole 202. At the same time, the drill cylinder 101 continues to drill into the refractory brick. The movable member 203 in the through hole 202 closest to the lower end of the drill cylinder 101 contacts the outer surface of the sample, and at the same time, the outer surface of the sample abuts against the inner wall of the drill cylinder 101. The movable member 203 in the through hole 202 is in a second state. The outer surface of the sample contacts the second section 205 and causes it to retract into the through hole 202. The outer surface of the sample abuts against the inner wall of the drill cylinder 101 to close the through hole 202, losing the water suction function, ensuring that the accumulated water in the sampling groove is within a certain range, so that it can not only meet the functions of cooling and lubricating the lower end of the drill cylinder 101 and the sampling teeth 102, but also avoid the sample taken later from being overly soaked, reducing the subsequent drying work and reducing irreversible damage to the sample such as strength reduction and structural looseness.

[0050] After each sampling of the drill cylinder 101 is completed, the sample is located in a storage chamber 103. The negative pressure environment in the storage chamber 103 sucks the sample in the direction close to the upper end of the drill cylinder 101, so as to vacate the lower space of the storage chamber 103 for the next sampling. And during the upward movement of the sample, the sample sequentially passes over the movable member 203 from bottom to top, causing the movable member 203 below the storage position to switch from the first state to the second state, then to the first state, and the movable member 203 at the storage position to switch from the first state to the second state, then to the third state, that is, the sample passes over and presses on the second section 205, and 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 member 203 carries the sample, and at the same time, the through hole 202 continues to be closed, preventing the through hole 202 from sucking the accumulated water in the sampling groove, thereby preventing the sample from contacting water again and being soaked.

[0051] After all samplings are completed, the cover 210 is removed from the upper end of the drill cylinder 101, and the drill cylinder 101 is inverted to pour out the samples from the upper end of the drill cylinder 101 in sequence.

[0052] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, 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, it should be considered as the scope recorded in this specification.

[0053] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A sampling device for refractory brick detection, characterized in that, It includes a device main body and a drill pipe with its axis kept vertical. The device main body has an output end, and the output end is connected to the upper end of the drill pipe to drive the drill pipe to rotate. The lower end of the drill pipe is open and is provided with sampling teeth for drilling samples, and a storage cavity for storing samples is formed inside the drill pipe; A water supply hole and a negative pressure cavity are formed inside the side wall of the drill pipe. The water supply hole extends to the lower end of the drill pipe. A plurality of through holes are equidistantly arranged along the axial direction of the inner wall of the drill pipe. Both ends of the through hole are communicated with the negative pressure cavity and the storage cavity respectively. An active part is arranged in the through hole, and the active part can be switched between a first state and a second state. When in the first state, the sample in the storage cavity does not contact the active part and the through hole is open. When in the second state, the sample in the storage cavity contacts the active part and the through hole is closed.

2. The sampling device for refractory brick detection according to claim 1, characterized in that, The active part can be switched between the second state and a third state. When in the third state, the active part extends into the storage cavity to carry the sample in the storage cavity and the through hole is closed.

3. The sampling device for refractory brick detection according to claim 2, wherein, The through hole is inclined from top to bottom and from inside to outside. The active part includes a first section and a second section connected in an L shape. The first section is located inside the negative pressure chamber, and the second section is arranged along the through hole and can extend into the storage cavity; When the active 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 active part is in the second state, the sample in the storage cavity contacts the second section and makes it retract into the through hole; when the active 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.

4. The sampling device for refractory brick detection according to claim 3, characterized in that, An elastic part is arranged in the negative pressure cavity. One end of the elastic part is connected to the drill pipe, and the other end is connected to the first section. The elastic part makes the active part tend to be in the first state. When the active part is in the second state, the elastic part is compressed. When the active part is in the third state, the elastic part is stretched.

5. The sampling device for refractory brick detection according to claim 1, wherein, The axial distance between two adjacent through holes along the drill pipe is greater than the axial dimension of the sample along the drill pipe.

6. The sampling device for refractory brick detection according to claim 1, characterized in that, The negative pressure cavity and the through holes are both equidistantly arranged along the circumferential direction of the drill pipe and the number of settings is equal.

7. The sampling device for refractory brick detection according to claim 6, characterized in that, A plurality of water supply holes are equidistantly arranged along the circumferential direction of the drill pipe.

8. The sampling device for refractory brick detection according to claim 7, characterized in that, The number of settings of the water supply holes is equal to the number of settings of the negative pressure cavity, and the negative pressure cavity and the water supply holes are arranged alternately along the circumferential direction of the drill pipe.

9. The sampling device for refractory brick detection according to claim 1, characterized in that, The upper end of the drill pipe is open and is detachably provided with a cover. A water pipe joint and a negative pressure joint are arranged on the cover. One end of the water pipe joint is communicated with 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 communicated with the negative pressure cavity, and the other end of the negative pressure joint is connected to an external negative pressure source.

10. The sampling device for refractory brick detection according to claim 9, 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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