A multi-stage collision test device based on cascade shunt

Abstract

The present invention provides a multi-stage collision test device based on stepped shunt, which comprises a high-pressure experimental chamber, a mass block, an ore shunt plate and a multi-stage collision device; the high-pressure experimental chamber is vertically arranged and provided with a pressure relief opening at the upper part; the mass block is arranged above the pressure relief opening of the high-pressure experimental chamber in a matching manner and is detachably connected to the pressure relief opening of the high-pressure experimental chamber; the ore shunt plate is fixed on the top of the mass block; the multi-stage collision device is located directly below the high-pressure experimental chamber in a matching manner, and the middle part thereof is in a hollow shape for the mass block to move up and down through; the central axis of the multi-stage collision device is consistent with the central axis of the high-pressure experimental chamber. The structure of the present invention is reasonably and compactly designed. Through pre-acceleration of the mass block, the ore near the pressure relief opening leaves the high-pressure experimental chamber with a certain speed, and the higher the speed, the better the processing effect after impact; the ore located at the central axis position of the high-pressure experimental chamber can get rid of the constraints of the surrounding ore and water and complete pressure relief in a shorter time to realize ore crushing.

Description

Technical Field

[0001] The present invention relates to the technical field of ore processing, and particularly relates to a multi-stage collision test device based on cascade shunting. Background Art

[0002] At present, according to the ore processing test data carried out under the condition of high-pressure gas propulsion, we found that under the condition of high-pressure gas propulsion, the ore processing effect behind the high-pressure experimental chamber is better than that of the ore near the unloading port. During the unloading process, when the ore behind is propelled by high-pressure gas, the acceleration time is long, and when it sprays out of the high-pressure experimental chamber, it can maintain a relatively high movement speed; while for the ore near the unloading port, at the moment when the explosion-proof sheet opens, there is no acceleration distance, and the ambient pressure directly drops to zero, which is not conducive to maintaining the high pressure inside the ore. Therefore, compared with the ore behind, the processing effect of the ore near the unloading port is relatively poor. At the same time, as the radius of the high-pressure experimental chamber increases, the ore located at the central axis position of the high-pressure experimental chamber is surrounded by water, which is not conducive to rapid pressure relief. Therefore, there is an urgent need for a test device to improve the crushing effect of the ore near the unloading port and at the central axis position. Summary of the Invention

[0003] Aiming at the technical problems existing in the above background art, the present invention provides a multi-stage collision test device based on cascade shunting, with a reasonable and compact structure design. By installing an ore shunting plate above the mass block, the ore ejected at high speed can be gradually peeled off layer by layer along the radial direction, avoiding the ore located at the center of the high-pressure experimental chamber being surrounded by water, and enabling rapid pressure relief; the ore after layer-by-layer peeling can collide again at the corresponding height of the multi-stage collision device, which is conducive to ore crushing; at the same time, the pre-acceleration of the mass block can also increase the speed of the ore when it sprays out of the high-pressure experimental chamber, providing favorable conditions for better collision and crushing.

[0004] To solve the above technical problems, a multi-stage collision test device based on cascade shunting provided by the present invention includes a high-pressure experimental chamber, a mass block, an ore shunting mechanism, and a multi-stage collision device; the high-pressure experimental chamber is used for containing ore and filling high-pressure gas and water, and is vertically placed with a pressure relief port provided at the upper part thereof; the mass block is arranged above the pressure relief port of the high-pressure experimental chamber in a matching manner and is detachably connected to the pressure relief port of the high-pressure experimental chamber; the mass block is responsible for maintaining the internal pressure of the ore near the pressure relief port and providing a pre-acceleration distance for the ore to ensure that the ore is under high pressure and leaves the high-pressure experimental chamber at high speed; the ore shunting mechanism is fixedly installed on the top of the mass block in a matching manner and is used for shunting the ore; the multi-stage collision device is located directly below the high-pressure experimental chamber, and the middle part thereof is in a hollow shape for the ore shunting mechanism and the mass block to move up and down through it; the central axis of the multi-stage collision device is consistent with the central axis of the high-pressure experimental chamber to ensure that the ore shunting mechanism and the mass block can smoothly fall into the multi-stage collision device.

[0005] In the multi-stage collision test device based on cascade shunting, specifically: a tray is fixedly installed at the lower part of the mass block in a matching manner; the tray is detachably clamped to the pressure relief port of the high-pressure experimental chamber through a clamping block; a cylinder is arranged on one side of the clamping block in a matching manner; and the power output end of the cylinder is connected to the end of the clamping block away from the tray in a matching manner.

[0006] In the multi-stage collision test device based on cascade shunting, specifically: a sealing ring is installed on the circumferential side surface of the mass block in a matching manner and is in sealed contact connection with the inner wall of the pressure relief port of the high-pressure experimental chamber through the sealing ring to maintain the high pressure inside the ore when it leaves the high-pressure experimental chamber.

[0007] In the multi-stage collision test device based on cascade shunting, specifically: the ore shunting mechanism includes a shunting column and a shunting plate; the shunting column is vertically fixed on the upper part of the mass block and is distributed in a polygon; the shunting plates are horizontally installed at equal intervals from top to bottom on the shunting column; a shunting through hole is vertically formed through the center of each shunting plate; the opening area of the shunting through holes in the centers of the shunting plates installed on the shunting column from top to bottom gradually decreases from top to bottom, and the ore of different volumes in the high-pressure experimental chamber can be shunted.

[0008] In the multi-stage collision test device based on cascade shunting, specifically: the opening areas of the shunting through holes in the centers of the shunting plates installed on the shunting column from top to bottom are designed in an arithmetic progression; and the angle of each shunting plate relative to the horizontal plane is 15°.

[0009] The multi-stage collision test device based on cascade shunt, wherein: the multi-stage collision device includes a collision column and a collision plate; the collision columns are vertically arranged in a polygon distribution directly below the high-pressure test chamber, and four layers of equally spaced collision plates are horizontally and fixedly installed thereon from top to bottom; the central area of each collision plate is hollowed out and allows the ore shunt mechanism and the mass block to move up and down together as a whole.

[0010] The multi-stage collision test device based on cascade shunt, wherein: the collision column of the multi-stage collision device is of a hollow structure, and a base fixedly connected to the bottom of the high-pressure test chamber is arranged at the center of the inner bottom.

[0011] The multi-stage collision test device based on cascade shunt, wherein: the distance between the lowest shunt plate of the ore shunt mechanism and the base is equivalent to the height of the mass block, and the distance between adjacent shunt plates of the ore shunt mechanism is the same as the distance between adjacent collision plates of the multi-stage collision device, ensuring that the shunt plates and the top of the mass block installed from top to bottom of the ore shunt mechanism correspond one by one to the collision plates installed from top to bottom of the multi-stage collision device, so that the ore shunted in each part has more opportunities to collide at different levels.

[0012] The multi-stage collision test device based on cascade shunt, wherein: the angle of each collision plate relative to the horizontal plane is 30°.

[0013] The multi-stage collision test device based on cascade shunt, wherein: a high-pressure gas chamber for providing high-pressure gas is arranged behind the high-pressure test chamber; the high-pressure gas chamber is connected to the high-pressure test chamber through a high-pressure gas pipe and is used to push the piston inside the high-pressure test chamber, and the high-pressure test chamber pushes the ore to be ejected quickly through the piston inside it.

[0014] Adopting the above technical solution, the present invention has the following beneficial effects:

[0015] The multi-stage collision test device based on cascade shunt of the present invention has a reasonable and compact structure design. By arranging an ore shunt plate above the mass block and a corresponding multi-stage collision device directly below the high-pressure test chamber, the ore after pre-acceleration can be shunted in equal volume and leave the high-pressure test chamber.

[0016] The present invention also has two prominent advantages: First, through pre-acceleration by the mass block, the ore near the unloading port leaves the high-pressure test chamber with a certain speed, and the higher the speed, the better the processing effect after impact; Second, the ore located at the central axis position of the high-pressure test chamber can get rid of the constraints of the surrounding ore and water and complete unloading in a shorter time to achieve ore crushing.

[0017] By installing an ore diversion plate above the mass block, the present invention can strip the ore ejected at high speed layer by layer in the radial direction, avoiding the ore at the center of the high-pressure test chamber being surrounded by water, and enabling rapid pressure relief. After the layered stripping, the ore can collide again at the corresponding height of the multi-stage collision device, which is beneficial to ore crushing. At the same time, the pre-acceleration of the mass block can also increase the speed of the ore ejected from the high-pressure test chamber, providing favorable conditions for better collision and crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of a multi-stage collision test device based on cascade diversion of the present invention;

[0020] Figure 2 It is a comparison diagram of the particle size distribution of ore powder involved in the multi-stage collision test device based on cascade diversion of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0022] The following will further explain and illustrate the present invention in conjunction with specific embodiments.

[0023] As Figure 1 shown, the multi-stage collision test device based on cascade diversion provided in this embodiment includes a high-pressure test chamber 1, a mass block 2, an ore diversion mechanism 3, and a multi-stage collision device 4.

[0024] The high-pressure test chamber 1 is used to hold ore and fill high-pressure gas and water. It is vertically placed and has a pressure relief port at the lower part. Under the pushing action of the high-pressure gas in the rear high-pressure gas chamber, the ore is discharged from the pressure relief port of the high-pressure test chamber 1.

[0025] The mass block 2 is arranged above the unloading port of the high-pressure experimental chamber 1 in a matching manner, responsible for maintaining the internal pressure of the ore near the unloading port and providing a pre-acceleration distance for the ore, ensuring that the ore leaves the high-pressure experimental chamber 1 with high pressure and high speed. Among them, a tray 5 is fixedly installed at the bottom of the mass block 2 in a matching manner, and the tray 5 is detachably clamped to the unloading port of the high-pressure experimental chamber 1 through a clamping block 6. One side of the clamping block 6 is provided with a cylinder 7 in a matching manner. The power output end of the cylinder 7 is connected to the end of the clamping block 6 far away from the tray 5 in a matching manner. When the clamping block 6 quickly withdraws to both sides under the drive of the cylinder 7, the mass block 2 will vertically fall into the multi-stage collision device 4, and the ore in the high-pressure experimental chamber 1 will fly out after colliding with the multi-stage collision device 4. At the same time, the mass block 2 is used to provide a pre-acceleration distance for the ore, so that the ore leaves the high-pressure experimental chamber 1 at high speed. Two sealing rings are installed on the circumferential side of the mass block 2 in a matching manner and are in sealing contact connection with the inner wall of the unloading port of the high-pressure experimental chamber 1 through the two sealing rings, maintaining the high pressure inside when the ore leaves the high-pressure experimental chamber 1.

[0026] The ore shunting mechanism 3 is fixedly installed above the mass block 2 in a matching manner and is used for shunting the ore. It includes a shunting column 31 and a shunting plate 32. Among them, the shunting column 31 is a plurality of vertically fixed on the top of the mass block 2, and the plurality of shunting columns 31 are evenly distributed along the circumferential direction of the top of the mass block 2 to form a polygon distribution. The shunting plate 32 has three layers and is respectively horizontally installed at the lower end, middle section and upper end of the plurality of shunting columns 31 at equal intervals. A shunting through hole is vertically penetrated through the center of each shunting plate 32. The opening area of the shunting through hole of the shunting plate 32 at the upper end of the shunting column 31 is the largest, the opening area of the shunting through hole of the shunting plate 32 in the middle section of the shunting column 31 is the second largest, and the opening area of the shunting through hole of the shunting plate 32 at the lower end of the shunting column 31 is the smallest, that is, the opening areas of the shunting through holes in the centers of the three layers of shunting plates 32 gradually decrease from top to bottom, and the ores with different volumes in the high-pressure experimental chamber 1 can be shunted. Among them, the opening areas of the shunting through holes in the centers of the three layers of shunting plates 32 from top to bottom are designed in an arithmetic progression, that is, the difference between the opening area of the shunting through hole of the shunting plate 32 at the upper end of the shunting column 31 and the opening area of the shunting through hole of the shunting plate 32 in the middle section of the shunting column 31 is equal to the difference between the opening area of the shunting through hole of the shunting plate 32 in the middle section of the shunting column 31 and the opening area of the shunting through hole of the shunting plate 32 at the lower end of the shunting column 31; and the included angle of each layer of shunting plate 32 relative to the horizontal plane is 15°.

[0027] The multi-stage collision device 4 is fixedly installed directly below the high-pressure experimental chamber 1 in a matching manner, with its central axis coinciding with that of the high-pressure experimental chamber 1 to ensure that the mass block 2 can smoothly fall into the multi-stage collision device 4. Among them, the multi-stage collision device 4 includes a collision column 41 and a collision plate 42; the collision column 41 is vertically and fixedly installed directly below the high-pressure experimental chamber 1 in a matching manner and is distributed in a polygon shape, and four layers of collision plates 42 are evenly and horizontally fixedly installed thereon from bottom to top; the central area of each layer of collision plate 42 is hollowed out and allows the ore diversion mechanism 3 and the mass block 2 to move up and down together. The collision column 41 is a hollow structure and a base 8 is arranged in the center of the inner bottom in a matching manner, and the base 8 is fixedly connected to the bottom of the high-pressure experimental chamber 1; the distance between the lowermost layer of the ore diversion mechanism 3 and the base 8 is equivalent to the height of the mass block 2, and the distance between every two layers of the ore diversion mechanism 3 is the same as the distance between every two layers of the multi-stage collision device 4, ensuring that the ore can quickly flow out along the gap between the two-layer diversion plates 32 of the ore diversion mechanism 3 and the two-layer collision plates 42 of the multi-stage collision device 4, and collide with the multi-stage collision device 4 and the ore diversion mechanism 3 respectively during the outflow process, increasing the probability of ore crushing. It is ensured that the three-layer diversion plates 32 installed from top to bottom of the ore diversion mechanism 3 and the top of the mass block 2 respectively correspond to the four-layer collision plates 42 installed from top to bottom of the multi-stage collision device 4, so that the ore diverted in each part has an increased chance of collision at different levels; at the same time, the angle of each layer of collision plate 42 relative to the horizontal plane is 30°.

[0028] Among them, the high-pressure gas chamber is used to provide high-pressure gas and is located behind the high-pressure experimental chamber 1, and is connected to the high-pressure experimental chamber 1 through a high-pressure gas pipe, and is used to push the piston located inside the high-pressure experimental chamber 1. The piston inside the high-pressure experimental chamber 1 pushes the ore to be ejected quickly, and the ore is gradually peeled off layer by layer in the radial direction by the ore diversion mechanism 3. After the mass block 2 contacts the base 8, the peeled ore will be separated layer by layer along the multi-stage collision device 4, increasing the chance of ore collision; at the same time, it avoids the ore located at the center of the high-pressure experimental chamber 1 being surrounded by water heavily and can achieve rapid pressure relief.

[0029] As Figure 2 shown, after adding the multi-stage collision device 4, because the probability of ore collision will increase, the proportion of fine particle ore powder generated will be 3-5% higher than that without the multi-stage collision device (the cumulative mass proportion of particles less than 0.5 mm, the red line is 3-5% higher than the black line).

[0030] The structure of the present invention is reasonably and compactly designed. Through pre-acceleration of the mass block, the ore near the pressure relief port leaves the high-pressure experimental chamber with a certain speed. The higher the speed, the better the processing effect after impact; the ore located at the central axis position of the high-pressure experimental chamber can get rid of the constraints of the surrounding ore and water and complete pressure relief within a shorter time to achieve ore crushing.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-stage collision test device based on step-by-step flow diversion, characterized in that: The multi-stage collision test device comprises a high-pressure test chamber (1), a mass block (2), an ore diversion mechanism (3) and a multi-stage collision device (4); The high-pressure test chamber (1) is used to contain ore and be filled with high-pressure gas and water, and is placed vertically and has a discharge port at the top; The mass block (2) is matched and arranged above the unloading port of the high-pressure test chamber (1) and is detachably connected to the unloading port of the high-pressure test chamber (1); the mass block (2) is responsible for maintaining the internal pressure of the ore near the unloading port and providing a pre-acceleration distance for the ore, so as to ensure that the ore leaves the high-pressure test chamber (1) at a high speed. The ore diversion mechanism (3) is matched and fixedly mounted on the top of the mass block (2) and is used to divert ore; The multi-stage collision device (4) is matched and located directly below the high-pressure test chamber (1), and the middle part thereof is a hollow shape that allows the ore diversion mechanism (3) and the mass block (2) to move from top to bottom; the central axis of the multi-stage collision device (4) is consistent with the central axis of the high-pressure test chamber (1), ensuring that the ore diversion mechanism (3) and the mass block (2) can smoothly fall into the multi-stage collision device (4); The ore diversion mechanism (3) comprises a diversion column (31) and a diversion plate (32); the diversion column (31) is vertically fixed on the upper part of the mass block (2) and is distributed in a polygonal shape; the diversion columns (31) are horizontally installed with the diversion plates (32) spaced equidistantly from top to bottom; a diversion flow hole is provided in the center of each diversion plate (32) in a vertical direction; the opening area of ​​the diversion flow hole in the center of the diversion plate (32) installed on the diversion column (31) from top to bottom gradually decreases from top to bottom, so that ores of different volumes in the high-pressure experimental chamber (1) can be diverted; The opening areas of the central diversion holes of the diversion plates (32) installed on the diversion columns (31) from top to bottom are designed to be equidistant; and the angle between each layer of the diversion plates (32) and the horizontal plane is 15°; The multi-stage collision device (4) comprises a collision column (41) and a collision plate (42); the collision column (41) is matched and vertically arranged directly below the high-pressure test chamber (1) and is distributed in a polygonal shape, and is matched and horizontally fixedly installed with four layers of equidistant collision plates (42) from top to bottom; the central area of ​​each layer of the collision plate (42) is hollow and can allow the ore diversion mechanism (3) and the mass block (2) to move up and down as a whole; The collision column (41) of the multi-stage collision device (4) is a hollow structure, and a base (8) fixedly connected to the bottom of the high-pressure test chamber (1) is matched and arranged at the center of the inner bottom; The distance between the diverter plate (32) at the bottom layer of the ore diverter mechanism (3) and the base (8) is equivalent to the height of the mass block (2), and the spacing between two adjacent layers of the diverter plates (32) of the ore diverter mechanism (3) is the same as the spacing between two adjacent layers of the collision plates (42) of the multi-stage collision device (4), thereby ensuring that the diverter plates (32) installed from top to bottom of the ore diverter mechanism (3) and the top of the mass block (2) correspond to the collision plates (42) installed from top to bottom of the multi-stage collision device (4) one by one, respectively, so that the ores diverted in each part have more chances of collision at different layers.

2. The multi-stage collision test device based on step-by-step flow diversion according to claim 1, characterized in that: A tray (5) is fixedly mounted on the bottom of the mass block (2); the tray (5) is detachably mounted on the unloading port of the high-pressure test chamber (1) via a clamping block (6); a cylinder (7) is matched and arranged on one side of the clamping block (6); and a power output end of the cylinder (7) is matched and connected to an end of the clamping block (6) away from the tray (5).

3. The multi-stage collision test device based on step-by-step flow diversion according to claim 1, characterized in that: A sealing ring is matched and installed on the circumferential side surface of the mass block (2) and is sealed and contacted with the inner wall of the unloading port of the high-pressure test chamber (1) through the sealing ring, so as to maintain the high pressure inside the high-pressure test chamber (1) when the ore leaves the high-pressure test chamber (1).

4. The multi-stage collision test device based on step-by-step flow diversion according to claim 1, characterized in that: The angle between each layer of the collision plates (42) and the horizontal plane is 30°.

5. The multi-stage collision test device based on step-by-step flow diversion according to claim 1, characterized in that: A high-pressure gas chamber for providing high-pressure gas is arranged behind the high-pressure test chamber (1); the high-pressure gas chamber is connected to the high-pressure test chamber (1) via a high-pressure gas pipe and is used to push a piston located inside the high-pressure test chamber (1); the high-pressure test chamber (1) pushes the ore to be ejected quickly via the piston inside the high-pressure test chamber (1).

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