Underground mine rock powder collecting device capable of being movably disassembled and assembled

Abstract

The invention relates to the technical field of mining operation, in particular to a movable and detachable underground mine rock powder collecting device which comprises a shell assembly, a delay unit, a flow limiting assembly and a stirring unit. According to the invention, first-stage time delay is carried out through the stirring action of the material stirring plate, second-stage time delay is carried out by controlling the flow by adjusting the flow limiting plate, and the speed of materials reaching the porous sieve plate is delayed in the second-stage time delay process, so that the problem that the representativeness of a collected rock powder sample is influenced by non-uniform distribution caused by the fact that a large number of materials enter the lower shell at the same time is avoided; the screening requirement of the porous sieve plate in unit time is lowered, the problem that the porous sieve plate is blocked is solved, large and small rock powder particles are arranged in sequence in the rotating cylinder in a centrifugal material distribution mode, and it is ensured that the representativeness of rock powder samples in each collecting box meets the requirement.

Description

Technical Field

[0001] This invention relates to the field of mining operation technology, specifically to a mobile and detachable underground mine rock powder collection device. Background Technology

[0002] As mining depth increases, mining projects face challenges such as long construction cycles and difficulties in drilling upwards. Therefore, in order to better serve production, it is necessary to further understand the shape and distribution characteristics of the ore body to determine the direction of the next mining operation. Currently, production drilling equipment is typically used to drill for rock powder samples, and the collected samples are systematically analyzed to obtain mineralization information at the centimeter or meter level.

[0003] The current rock powder collection process mainly involves setting up a collection point below the drilling platform and installing a collection device with an opening at the top. Inside the collection device, from top to bottom, there is a filter screen and a rock powder reduction box. The rock powder is filtered through the filter screen and the required rock powder sample is collected through the rock powder reduction box. The rock powder reduction box reduces the amount of sample collected while ensuring representativeness by dividing the sample with equal probability.

[0004] The following problems exist in the current collection process: 1. The premise for the rock powder reduction box to reduce rock powder and ensure the representativeness of the collected samples is that the feeding speed is appropriate and the material is mixed evenly. However, the material feeding speed is uncontrollable and the material is not fully mixed during the current collection process. Therefore, the problem of low representativeness of the collected samples is likely to occur due to fast feeding speed and uneven mixing.

[0005] 2. Due to the large amount of rock powder and rock that falls, if the collection is stopped by collecting a set amount of rock powder, the collected rock powder will be located in close layers within the ore, resulting in poor representativeness of the sample. In order to improve representativeness, a large amount of rock powder needs to be collected, which makes subsequent subdivision difficult and the overall operation cumbersome. Summary of the Invention

[0006] Therefore, it is necessary to provide a mobile and detachable underground mine rock powder collection device to solve the problems of the prior art.

[0007] This application provides a movable and detachable underground mine rock powder collection device, which is used in conjunction with a movable base and a telescopic pole. The device includes: a shell assembly on the telescopic pole, the shell assembly being divided into an upper shell and a lower shell from top to bottom, and a delay unit and a perforated screen plate arranged sequentially from top to bottom inside the upper shell. The delay unit includes two rotating cylinders distributed to the left and right, and multiple circumferentially distributed material feeding plates on the rotating cylinders.

[0008] The delay unit also includes a flow limiting component located above the porous sieve plate, which controls the amount of rock powder flowing to the porous sieve plate. The upper shell and the lower shell are rotatably connected.

[0009] The lower housing is equipped with a stirring unit. Inside the stirring unit, from top to bottom, there are rotating cylinders extending left and right along the axis and a collection assembly. The upper and lower sides of the rotating cylinders are provided with openings that communicate with the inner cavity. The collection assembly includes multiple collection boxes arranged front and back with a fixed volume.

[0010] The first delay action is formed by the feeding action of the feeding plate in the delay unit, and the second delay action is formed by the action of limiting the flow rate of rock powder in the flow limiting component. The flow limiting component is used to select and collect rock powder within the corresponding time interval. Then, the rock powder is collected by stirring unit and then divided and fed into the corresponding collection box.

[0011] According to an advantageous embodiment, the rear end faces of the upper housing and the lower housing are hinged together, the upper end face of the lower housing has two left and right distributed insertion slots, and the lower end face of the upper housing is fixedly provided with an insertion bracket corresponding to the insertion slots.

[0012] The rear end face of the upper shell is provided with a dumping trough for dumping excess rocks and rock powder, and a sealing plate is rotatably installed in the dumping trough via a connecting rod.

[0013] According to an advantageous embodiment, the delay unit further includes a mounting cylinder, through which two rotating cylinders distributed to the left and right are rotatably passed, and the rotating cylinders are sleeved on the corresponding mounting cylinders.

[0014] The feeding plate slides radially through the rotating cylinder.

[0015] According to an advantageous embodiment, an operating rod is slidably arranged inside the mounting cylinder, and two front-to-back distributed connecting rings are rotatably sleeved on the operating rod. A connecting ring corresponding to the first connecting ring is slidably sleeved on the mounting cylinder, and the second connecting ring is hinged to all adjacent material feeding plates.

[0016] According to an advantageous embodiment, the flow limiting component includes a mounting frame, and the mounting frame is fixedly disposed inside the upper housing above the porous sieve plate. Multiple flow limiting plates are rotatably disposed inside the mounting frame via rotating shafts and arranged at equal intervals. All the portions of the rotating shafts that pass through the front side of the upper housing are connected by sprockets and chains.

[0017] According to an advantageous embodiment, the rotating cylinder is rotatably mounted on the lower housing via a rotating shaft, and the stirring unit further includes an upper guide plate and a lower guide plate. The upper guide plate located above the rotating cylinder and the lower guide plate located below the rotating cylinder are fixedly disposed inside the lower housing.

[0018] The upper guide plate has a guide groove 1 that is wider at the top and narrower at the bottom, with its lower end aligned with the opening on the top of the rotating cylinder. The lower guide plate has a guide groove 2 that is wider at the top and narrower at the bottom, with its lower section aligned with the opening on the collection box. The upper end of the guide groove 2 is also aligned with the opening on the top of the rotating cylinder.

[0019] According to an advantageous embodiment, the stirring unit further includes a control plate. Two control plates are symmetrically distributed in front and behind the rotating cylinder and are slidably arranged in front and behind the rotating cylinder through a spring rod. Both the upper and lower ends of the control plates are slidably arranged with a pressing plate, and a spring rod is fixedly arranged between the pressing plate and the control plate.

[0020] According to an advantageous embodiment, when the rotating cylinder is stationary, the distance between the front and rear control plates is the same as the opening width; when the rotating cylinder rotates, the distance between the two control plates increases during the centrifugal process.

[0021] According to an advantageous embodiment, the collection assembly further includes a tailstock, and a U-shaped tailstock is fixedly disposed on the lower end face of the lower housing, with the opening of the tailstock facing upward, and all collection boxes are placed in the U-shaped area of ​​the tailstock in a back-to-back arrangement.

[0022] A push plate and a bonding plate are slidably arranged back and forth in the U-shaped area of ​​the tailstock. The collection box is located between the push plate and the bonding plate. The push plate is located in front of the bonding plate. A pressure spring is fixedly arranged between the bonding plate and the rear end of the tailstock. The collection assembly also includes a tailstock. A U-shaped tailstock is fixedly arranged on the lower end face of the lower housing. The opening of the tailstock faces upward. All collection boxes are placed in the U-shaped area of ​​the tailstock in a back-to-back arrangement.

[0023] A push plate and a bonding plate are slidably arranged back and forth in the U-shaped area of ​​the tailstock. The collection box is located between the push plate and the bonding plate. The push plate is located in front of the bonding plate. A pressure spring is fixedly arranged between the bonding plate and the rear end of the tailstock.

[0024] In summary, the present invention has the following beneficial effects: First, the present invention uses a material-pulling plate to perform a first-stage delay, and uses a flow-limiting plate to control the flow rate for a second-stage delay. The second-stage delay process slows down the speed at which the material reaches the porous sieve plate, avoiding the problem of a large amount of material entering the lower shell at the same time, which would lead to uneven distribution and affect the representativeness of the collected rock powder samples. It also reduces the sieving requirements of the porous sieve plate per unit time and reduces the problem of clogging of the porous sieve plate. Secondly, the centrifugal distribution method in the rotating drum ensures that the rock powder particles of different sizes are arranged in sequence, ensuring that the representativeness of the rock powder samples in each collection box meets the requirements.

[0025] Second, the method of controlling the feed flow rate by the flow limiting component in this invention facilitates the collection of rock powder samples at different time periods, and controls the number of samples entering the rotating cylinder through the porous sieve plate, thus avoiding the problem of a large number of samples or insufficient representativeness.

[0026] Third, the connection between the upper and lower shells and the detachable collection box in this invention provide convenience for staff during subsequent maintenance and cleaning, ensuring that no rock powder remains after cleaning, affecting the representativeness of the samples obtained in the subsequent collection process. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 A front view of a movable and detachable underground mine rock powder collection device provided according to an embodiment of the present invention is shown.

[0029] Figure 2 A partial cross-sectional perspective view of the upper shell, lower shell, and rotating cylinder provided according to an embodiment of the present invention is shown.

[0030] Figure 3 A partial cross-sectional view of the upper and lower housings provided in an embodiment of the present invention is shown.

[0031] Figure 4 A partial cross-sectional view of the upper and lower housings when they are joined together, according to an embodiment of the present invention, is shown.

[0032] Figure 5 A partial cross-sectional perspective view of the three-dimensional structure between the rotating cylinder, the feeding plate, and the mounting cylinder provided according to an embodiment of the present invention is shown.

[0033] Figure 6 A partial cross-sectional perspective view of the three-dimensional structure between the feed plate, connecting ring one, and connecting ring two provided according to an embodiment of the present invention is shown.

[0034] Figure 7 A partial cross-sectional perspective view of the three-dimensional structure between the mounting frame, the flow limiting plate, and the porous sieve plate provided according to an embodiment of the present invention is shown.

[0035] Figure 8 A partial cross-sectional perspective view of the three-dimensional structure between guide plate one, guide plate two, and rotating cylinder provided according to an embodiment of the present invention is shown.

[0036] Figure 9 A partial sectional side view of the rotating cylinder, tailstock, and collection box provided according to an embodiment of the present invention is shown.

[0037] The above-mentioned attached drawings include the following reference numerals: 1. Movable base; 2. Telescopic upright; 3. Upper shell; 30. Plug-in frame; 31. Tilting groove; 32. Sealing plate; 4. Lower shell; 40. Plug-in groove; 5. Delay unit; 50. Rotating cylinder; 51. Material feeding plate; 52. Mounting cylinder; 53. Operating rod; 54. Connecting ring one; 55. Connecting ring two; 6. Perforated sieve plate; 7. Flow limiting component; 70. Mounting frame; 71. Flow limiting plate; 8. Stirring unit; 80. Rotating cylinder; 800. Opening; 81. Collection component; 810. Collection box; 811. Tail seat; 812. Push plate; 813. Adhesive plate; 82. Upper guide plate; 820. Guide groove one; 83. Lower guide plate; 830. Guide groove two; 84. Material control plate; 85. Adhesive plate; 86. Spring rod one. Detailed Implementation

[0038] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] like Figure 1 and Figure 2 As shown, a movable and detachable underground mine rock powder collection device is used in conjunction with a movable base 1 and a telescopic pole 2. The device includes: a shell assembly is provided on the telescopic pole 2, which is divided into an upper shell 3 and a lower shell 4 from top to bottom. The upper shell 3 is provided with a delay unit 5 and a perforated screen plate 6 from top to bottom. The delay unit 5 includes two rotating cylinders 50 distributed to the left and right, and multiple circumferentially distributed material feeding plates 51 are provided on the rotating cylinders 50.

[0040] The delay unit 5 also includes a flow limiting component 7 located above the porous sieve plate 6, which controls the amount of rock powder flowing to the porous sieve plate 6. The upper shell 3 and the lower shell 4 are rotatably connected.

[0041] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, a stirring unit 8 is provided inside the lower housing 4. Inside the stirring unit 8, from top to bottom, there are a rotating cylinder 80 extending left and right along the axis and a collection assembly 81. The upper and lower sides of the rotating cylinder 80 are provided with openings 800 communicating with the inner cavity. The collection assembly 81 includes multiple collection boxes 810 arranged front and back with a fixed volume.

[0042] The first delay action is formed by the feeding action of the feeding plate 51 in the delay unit 5, and the second delay action is formed by the action of limiting the flow rate of rock powder in the flow limiting component 7. The rock powder within the corresponding time interval is selected for collection by the flow limiting component 7. Then, the rock powder is collected by stirring unit 8 and then divided and fed into the corresponding collection box 810.

[0043] During operation, the worker pushes the movable base 1 to the designated collection position and uses the telescopic pole 2 to move the housing assembly upwards to directly below the collection area (i.e., below the rock drilling rig). A predetermined number of collection boxes 810 are then installed into the device. It should be noted that the upper housing 3's top-larger-bottom-smaller design facilitates the entry and collection of rock powder through the opening at the top of the upper housing 3. During the collection process, rock mixed with rock powder (the mixture of rock and rock powder is collectively referred to as material) enters the upper housing 3. Large rocks and rock powder are separated by the porous sieve plate 6. The rock powder passes through the porous sieve plate 6 and enters the lower housing 4. In the aforementioned process... The rotating cylinder 50 drives the material feeding plate 51 to rotate, and the feeding action of the material feeding plate 51 slows down the material falling time. Secondly, the flow rate of rock powder flowing to the porous screen plate 6 is controlled by the flow limiting component 7. Thus, the feeding is slowed down by the above two operation methods to avoid the problem of uneven rock powder collection and poor representativeness caused by excessive feeding speed. It should also be noted that when it is necessary to collect rock powder over different time spans, the flow limiting component 7 closes the channel to the porous screen plate 6 and opens it within a set time period. In this way, rock powder over a longer time span can be collected, improving the representativeness of the rock powder sample.

[0044] After passing through the porous sieve plate 6, the rock powder enters the rotating drum 80. The rotation of the drum 80 thoroughly mixes the rock powder sample, and centrifugal force causes the particles of different sizes to be arranged in sequence. Finally, the rock powder is collected into a set number of collection boxes 810. In this way, the rock powder sample in each collection box 810 covers all particle sizes in the collected rock powder, improving the representativeness of the collected sample. At the same time, by using a set number of collection boxes 810 and the volume of each collection box 810, the reduction operation is carried out while ensuring that the amount of rock powder collected is the set amount. The overall collection process is more scientific, accurate and convenient.

[0045] Finally, it should be noted that, through the connection between the upper shell 3 and the lower shell 4 and the detachable collection box 810, the overall device can be divided into the upper shell 3 and the lower shell 4, thereby providing convenience for staff during subsequent maintenance and cleaning, and ensuring that no rock powder remains after cleaning, which may affect the representativeness of the samples obtained in the subsequent collection process.

[0046] like Figure 3 and Figure 4As shown, the upper housing 3 and the lower housing 4 are hinged together at their rear ends. The upper end face of the lower housing 4 has two left and right distributed insertion slots 40. The lower end face of the upper housing 3 is fixedly provided with an insertion bracket 30 corresponding to the insertion slots 40.

[0047] The rear end face of the upper shell 3 is provided with a dumping trough 31 for dumping excess rocks and rock powder. A sealing plate 32 is rotatably installed in the dumping trough 31 via a connecting rod. The connecting rod can be connected to the upper shell 3 via a spring structure, such as a spiral spring. The spring structure keeps the sealing plate 32 in a vertical state after the upper shell 3 is installed. When the upper shell 3 dumps rocks and rock powder, the sealing plate 32 releases its sealing state on the dumping trough 31 due to its own gravity.

[0048] Manually rotating the upper shell 3 causes the insertion bracket 30 to insert into the corresponding insertion slot 40, completing the docking installation between the upper shell 3 and the lower shell 4. This docking installation method facilitates manual cleaning of residual rock powder inside the upper shell 3 and lower shell 4 after a single rock powder collection operation, preventing residual rock powder from interfering with the representativeness of subsequent rock powder collections. Secondly, the sealing plate 32, with the upper shell 3 installed, prevents rock powder leakage. After a single cleaning operation, rotating the upper shell 3 opens the sealing plate 32, allowing the rock powder to be poured out from the pouring trough 31. Excess rock powder mixture is collected after rock powder collection, improving the convenience of cleaning and collection processes. At the same time, collecting pre-screening materials ensures complete particle size distribution data for subsequent sample testing. Moreover, compared to direct dumping, it avoids dust spillage affecting the working environment.

[0049] like Figure 1 , Figure 2 and Figure 5 As shown, the delay unit 5 also includes a mounting cylinder 52. The upper housing 3 rotatably passes through two rotating cylinders 50 distributed on the left and right. The rotating cylinders 50 are sleeved on the corresponding mounting cylinders 52. The mounting cylinders 52 are connected to an external motor (not shown in the figure). The left mounting cylinder 52 rotates clockwise and the right mounting cylinder 52 rotates counterclockwise.

[0050] The feeding plate 51 slides radially through the rotating cylinder 50.

[0051] like Figure 5 and Figure 6 As shown, an operating rod 53 is slidably arranged inside the mounting cylinder 52. Two front-to-back distributed connecting rings 54 are rotatably sleeved on the operating rod 53, and a connecting ring 55 corresponding to and connected to the connecting rings 54 is slidably sleeved on the mounting cylinder 52.

[0052] The second connecting ring 55 is hinged to all adjacent feeding plates 51, and the operating lever 53 is driven by an external hydraulic cylinder (not shown in the figure) to move back and forth.

[0053] like Figure 1 and Figure 7 As shown, the flow limiting component 7 includes a mounting frame 70. The mounting frame 70 is fixedly installed inside the upper housing 3 above the porous sieve plate 6. Multiple flow limiting plates 71 are equidistantly arranged in the left and right sides through a rotating shaft inside the mounting frame 70. All the rotating shafts that pass through the front side of the upper housing 3 are connected by a sprocket and chain. One of the rotating shafts is connected to an external motor (not shown in the figure).

[0054] During operation, the external motor 1 causes the two mounting cylinders 52 to rotate synchronously. The mounting cylinders 52 drive the rotating cylinder 50 and the material-pushing plate 51 to rotate synchronously. During rotation, the material-pushing plate 51 pushes the material in the falling process, delaying the time it takes for the material to fall onto the porous screen plate 6, which is the first stage of delay. Then, the material falls onto the porous screen plate 6 through the flow-limiting component 7 and finally enters the lower housing 4 through the porous screen plate 6. During the above process, the external motor 2 drives the corresponding rotating shaft to rotate. Through the sprocket and chain drive, all rotating shafts rotate synchronously, so the flow-limiting plate 71 rotates synchronously. When the adjacent flow-limiting plates 71 are in a vertical state, the flow rate through the flow-limiting component 7 is the maximum. When two adjacent flow-limiting plates 71 are in contact, the flow-limiting component 7 closes the material falling channel, and the flow rate is 0. The flow rate of the falling material is controlled in the above way, which is the second stage of delay process by controlling the flow rate.

[0055] The above-mentioned secondary delay process slows down the speed at which the material reaches the porous sieve plate 6, avoiding the simultaneous entry of a large amount of material into the lower shell 4, which would lead to uneven distribution and affect the representativeness of the collected rock powder samples. It also reduces the screening feed flow rate of the porous sieve plate 6 per unit time, thereby reducing the problem of clogging of the porous sieve plate 6.

[0056] It should be further explained that the operation of the external hydraulic cylinder causes the operating lever 53 to drive the connecting ring 54 on it to move back and forth synchronously. This allows the connecting ring 55 to adjust the length of the material feeding plate 51 extending out of the rotating cylinder 50, thereby adjusting the delay effect of the material feeding plate 51 in the process of feeding rock powder, improving the controllability and the convenience of the operation.

[0057] like Figure 1 , Figure 2 and Figure 8 As shown, the rotating cylinder 80 is rotatably mounted on the lower housing 4 via a rotating shaft. The stirring unit 8 also includes an upper guide plate 82 and a lower guide plate 83. The upper guide plate 82 located above the rotating cylinder 80 and the lower guide plate 83 located below the rotating cylinder 80 are fixedly mounted inside the lower housing 4.

[0058] The upper guide plate 82 has a guide groove 820 that is wider at the top and narrower at the bottom, with its lower end aligned with the upper opening 800 of the rotating cylinder 80. The lower guide plate 83 has a guide groove 830 that is wider at the top and narrower at the bottom, with its lower section aligned with the opening 800 of the collection box 810. The upper end of the guide groove 830 is also aligned with the upper opening 800 of the rotating cylinder 80.

[0059] like Figure 1 , Figure 8 and Figure 9 As shown, the stirring unit 8 also includes a control plate 84. Two control plates 84 are symmetrically distributed front and back inside the rotating cylinder 80 via a spring rod 86. Both the upper and lower ends of the control plate 84 are fitted with a close-fitting plate 85. A spring rod is fixed between the close-fitting plate 85 and the control plate 84. When the rotating cylinder 80 is stationary, the distance between the two control plates 84 is the same as the width of the opening 800. When the rotating cylinder 80 rotates, the distance between the two control plates 84 increases during the centrifugal process.

[0060] It should be noted that when the rotating cylinder 80 is stationary, its two openings 800 are vertically opposite each other. Furthermore, both the upper guide plate 82 and the lower guide plate 83 are provided with sealing components (not shown in the figure) for sealing the rotating cylinder 80. If the rotating cylinder 80 is sealed by external driving technologies such as hydraulic drive or electric drive, the plates can be driven to seal the guide groove 820 and the guide groove 830. This is a mature external existing technology and can be replaced by other existing technologies with sealing effect. It will not be elaborated further here.

[0061] When rock powder passes through the porous sieve plate 6 and enters the lower housing 4, the upper opening 800 of the rotating cylinder 80 is open and the lower opening 800 is closed. The rock powder enters the rotating cylinder 80 through the upper opening 800. When the rotating cylinder 80 is filled with enough rock powder, the upper opening 800 of the rotating cylinder 80 closes, and the external motor drives the rotating cylinder 80 to rotate. During the rotation, the centrifugal force generated by the rotation causes the two control plates 84 to move away from each other, the spring rod 86 deforms, and the contact plate 85 remains in contact with the material. Under the action of centrifugal force and the elastic force of spring rod 2, the rock powder is always in contact with the inner wall of the rotating cylinder 80. Therefore, the space for storing rock powder in the rotating cylinder 80 is increased, which facilitates the uniform mixing of rock powder in this space. After the mixing is completed, the rotating cylinder 80 is reset to the initial state, and the control plate 84 is reset under the elastic force generated by the deformation of the corresponding spring rod 86. Therefore, the rock powder in the rotating cylinder 80 is restored to a rectangular arrangement. After the above centrifugal mixing action, the large particles of rock powder are close to the wall of the rotating cylinder 80 and the small particles are close to the center of the rotating cylinder 80.

[0062] Then, the lower opening 800 of the rotating drum 80 opens, and the rock powder falls into the collection box 810 directly below, eventually filling the collection box 810. After the centrifugal mixing described above, each collection box 810 contains rock powder of various particle sizes. This process is repeated multiple times to fill the required number of collection boxes 810, completing the collection of the set amount of rock powder. It should be noted that the center horizontal plane of the rotating drum 80 is the dividing line, meaning that each rotating drum 80 is for the collection needs of two collection boxes 810.

[0063] Secondly, during the flow of rock powder, the first guide channel 820 guides the rock powder into the rotating cylinder 80, and the second guide channel 830 guides the rock powder into the collection box 810.

[0064] like Figure 1 and Figure 2 As shown, the collection assembly 81 also includes a tail seat 811. A U-shaped tail seat 811 is fixedly provided on the lower end face of the lower housing 4. The opening 800 of the tail seat 811 faces upward. All collection boxes 810 are placed in the U-shaped area of ​​the tail seat 811 in a back-to-back arrangement.

[0065] A push plate 812 and a bonding plate 813 are slidably arranged back and forth in the U-shaped area of ​​the tailstock 811. The collection box 810 is located between the push plate 812 and the bonding plate 813. The push plate 812 is located in front of the bonding plate 813. A pressure spring is fixedly arranged between the bonding plate 813 and the rear end of the tailstock 811. The push plate 812 is pushed back and forth by an external hydraulic cylinder (not shown in the figure).

[0066] Before the collection operation, a set number of collection boxes 810 are manually selected and arranged in a row within the U-shaped area of ​​the tailstock 811. Then, the external hydraulic cylinder 2 works to push the collection boxes 810 through the push plate 812. The last collection box 810 contacts and adheres to the bonding plate 813. As the push plate 812 continues to push, the pressure spring is compressed and deformed, and each collection box 810 is pressed tightly against each other. Then, the last collection box 810 moves to directly below the lower opening 800 of the rotating cylinder 80.

[0067] Secondly, during the collection process, after the first collection box 810 is filled with rock powder, the external hydraulic cylinder continues to work, and the push plate 812 continues to push all the collection boxes 810, moving the collection boxes 810 down to directly below the lower opening 800. The collection and feeding action is repeated until all the collection boxes 810 are filled with rock powder samples. The staff then removes all the collection boxes 810 from the tailstock 811, completing the collection.

[0068] It should be further explained that, compared with the existing technology that collects rock powder using a single filter screen and rock powder reduction box, this solution adds a delay unit 5, a flow limiting group, and a stirring unit 8. During the collection operation, a two-stage delay is formed from top to bottom, which slows down the speed at which the material reaches the porous sieve plate 6, avoiding the problem of a large amount of material entering the lower shell 4 at the same time, resulting in uneven distribution and affecting the representativeness of the collected rock powder samples. Then, the rock powder particles of different sizes are arranged in order by centrifugal separation, ensuring that the rock powder samples in each collection box 810 meet the representativeness requirements. The added components are all conventional mechanical parts, so they can be used for a long time after a single installation. In summary, this technical solution is a specific improvement proposed to address the problems in the existing technology.

[0069] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0070] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0072] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A movable and detachable underground mine rock powder collection device, used in conjunction with a movable base and a telescopic pole, characterized in that, include: The telescopic pole is equipped with a housing assembly, which is divided into an upper housing and a lower housing from top to bottom. The upper housing contains a delay unit and a perforated screen plate arranged sequentially from top to bottom. The delay unit includes two rotating cylinders distributed to the left and right, and multiple circumferentially distributed material feeding plates are arranged on the rotating cylinders. The delay unit also includes a flow limiting component located above the porous sieve plate, which controls the amount of rock powder flowing to the porous sieve plate. The upper and lower housings are rotatably connected. The lower housing is equipped with a stirring unit. The stirring unit consists of a rotating cylinder extending horizontally along its axis and a collection assembly, arranged from top to bottom. The rotating cylinder has openings on its upper and lower sides that communicate with the inner cavity. The collection assembly includes multiple collection boxes arranged in a front-to-back pattern with a fixed volume. The first delay action is formed by the feeding action of the feeding plate in the delay unit, and the second delay action is formed by the action of limiting the flow rate of rock powder in the flow limiting component. The flow limiting component is used to select and collect rock powder within the corresponding time interval. Then, the rock powder is collected by stirring unit and then divided and fed into the corresponding collection box.

2. The movable and detachable underground mine rock powder collection device according to claim 1, characterized in that: The upper shell and the lower shell are hinged together at their rear ends. The upper end face of the lower shell has two left and right distributed insertion slots. The lower end face of the upper shell is fixedly provided with an insertion bracket corresponding to the insertion slots. The rear end face of the upper shell is provided with a dumping trough for dumping excess rocks and rock powder, and a sealing plate is rotatably installed in the dumping trough via a connecting rod.

3. The movable and detachable underground mine rock powder collection device according to claim 1, characterized in that: The delay unit also includes a mounting cylinder, and the upper housing rotatably passes through two rotating cylinders distributed on the left and right, with the rotating cylinders sleeved on the corresponding mounting cylinders; The feeding plate slides radially through the rotating cylinder.

4. A movable and detachable underground mine rock powder collection device according to claim 3, characterized in that: An operating rod is slidably arranged inside the mounting cylinder. Two connecting rings, one distributed front and back, are rotatably sleeved on the operating rod. A connecting ring, the second one, is slidably sleeved on the mounting cylinder and connected to the first connecting ring. The second connecting ring is hinged to all adjacent material feeding plates.

5. A movable and detachable underground mine rock powder collection device according to claim 1, characterized in that: The flow limiting component includes a mounting frame. The mounting frame is fixedly installed inside the upper housing and located above the porous sieve plate. Multiple flow limiting plates are equidistantly arranged in the left and right sides and are rotatably installed inside the mounting frame via rotating shafts. All rotating shafts are connected to each other through the front side of the upper housing via sprockets and chains.

6. A movable and detachable underground mine rock powder collection device according to claim 1, characterized in that: The rotating cylinder is rotatably mounted on the lower shell via a rotating shaft. The stirring unit also includes an upper guide plate and a lower guide plate. The upper guide plate located above the rotating cylinder and the lower guide plate located below the rotating cylinder are fixedly installed inside the lower shell. The upper guide plate has a guide groove 1 that is wider at the top and narrower at the bottom, with its lower end aligned with the opening on the top of the rotating cylinder. The lower guide plate has a guide groove 2 that is wider at the top and narrower at the bottom, with its lower section aligned with the opening on the collection box. The upper end of the guide groove 2 is also aligned with the opening on the top of the rotating cylinder.

7. A movable and detachable underground mine rock powder collection device according to claim 1, characterized in that: The stirring unit also includes a material control plate. Two material control plates are symmetrically distributed in front and behind the rotating cylinder and are slidably arranged in front and behind the rotating cylinder through a spring rod. The upper and lower ends of the material control plates are slidably arranged with a pressing plate. A spring rod is fixedly arranged between the pressing plate and the material control plate.

8. A movable and detachable underground mine rock powder collection device according to claim 7, characterized in that: When the rotating cylinder is stationary, the distance between the front and rear control plates is the same as the opening width. When the rotating cylinder rotates, the distance between the two control plates increases during the centrifugal process.

9. A movable and detachable underground mine rock powder collection device according to claim 1, characterized in that: The collection assembly also includes a tailstock. A U-shaped tailstock is fixedly provided on the lower end face of the lower housing. The opening of the tailstock faces upward. All collection boxes are placed in the U-shaped area of ​​the tailstock in a back-to-back arrangement. A push plate and a bonding plate are slidably arranged back and forth in the U-shaped area of ​​the tailstock. The collection box is located between the push plate and the bonding plate. The push plate is located in front of the bonding plate. A pressure spring is fixedly arranged between the bonding plate and the rear end of the tailstock.

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