Core water jet splitting device for mineral geological exploration

Abstract

The present application provides a kind of core water jet splitting sample device for mineral geological exploration, it is related to mineral geological exploration technical field.The core water jet splitting sample device of the present application is mainly composed of water tank and automatic feed mechanism, water tank is provided with water jet cutting head, pressing wheel and support wheel;Automatic feed mechanism setting is mainly composed of lever, driving wheel and tension spring, wherein, driving wheel is used to push rock core to move forward, coaxially provided with ratchet wheel on driving wheel;Cup-shaped body is arranged at one end of lever, and the opening of cup-shaped body faces the spray port of water jet cutting head;Ratchet pawl is hinged to the other end of lever, and ratchet pawl is engaged with ratchet wheel under the action of torsional spring.The present application realizes the automatic feed of rock core by the kinetic energy of water jet, the mode that jet does not feed through rock core, once cut through rock core and feed, improves the splitting sample efficiency, and solves the problem of water jet kinetic energy waste.The present application is simple and ingenious, and solves the complex problem by simple structure.

Description

Technical Field

[0001] This invention specifically relates to a rock core water jet splitting device for mineral geological exploration, and pertains to the field of mineral geological exploration technology. Background Technology

[0002] In the field of mineral geological exploration, after core sampling, a splitting device is needed to split the core, with one half kept as a sample and the other half used for mineral composition analysis. Currently, there are two main methods for splitting cores: one is hydraulic splitting, which has the advantage of high speed but the disadvantage of the core being easily crushed by the splitting blade; the other is splitting with a cutting machine, which has the advantage of the core not easily breaking but the disadvantages of producing a lot of dust and noise, and posing safety risks during operation.

[0003] Waterjet cutting is the latest cutting technology, characterized by its dust-free, noise-free operation, safe operation, and ability to cut materials without shattering or altering their physicochemical properties. However, waterjet cutting presents challenges because field operations rely on generator power, limiting the waterjet's power. Furthermore, rock cores are heterogeneous materials; some areas are less hard and require shorter cutting times, while others are harder and require longer cutting times. If the waterjet cuts the rock core at a normal feed rate, some areas will be cut through while others will remain incomplete. While reducing the feed rate and cutting the core more slowly is possible, this not only wastes the waterjet's kinetic energy but also significantly slows down the core cutting efficiency.

[0004] Patent application number CN200720151049.2 discloses a semi-automatic waterjet cutting machine, which controls the waterjet feed using a pressure sensor and a stepper motor. This patent's technical solution has the following drawbacks: First, the waterjet feed requires a stepper motor drive, resulting in a complex structure, high cost, and unsuitability for field operations; second, the pressure sensor is an electronic component, highly susceptible to environmental influences, and has low reliability; third, rock cores vary in length and weight, requiring recalibration of the pressure sensor threshold for each cut. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention discloses a rock core water jet splitting device for mineral geological exploration. Its working principle is to realize the automatic feeding of the rock core by using the kinetic energy after the water jet cuts through the rock core, so that the water jet feeds when it cuts through the rock core and stops feeding when it does not cut through the rock core.

[0006] The present invention adopts the following technical solution:

[0007] A core water jet splitting device for mineral geological exploration, comprising:

[0008] The water tank has a water jet cutting head, a row of pressure rollers and two rows of support rollers at the top. The support rollers and pressure rollers are used to restrict the degree of freedom of the rock core, so that the rock core can only move along the axis.

[0009] The automatic feeding mechanism is set inside the water tank and mainly consists of a lever, a drive wheel, and a tension spring. The drive wheel is used to push the rock core forward, and a ratchet is coaxially mounted on the drive wheel. A cup-shaped body is set at one end of the lever, with the opening of the cup-shaped body facing the nozzle of the water jet cutting head. A pawl is hinged to the other end of the lever, and the pawl engages with the ratchet under the action of the torsion spring.

[0010] During operation, water is poured into the tank until the water surface submerges the cup-shaped body. When the jet from the waterjet cutting head cuts through the rock core and enters the water, it creates an impact flow. This impact flow acts on the cup-shaped body, causing the lever to swing against the tension of the spring. This swing is then propelled forward by the pawl rotating the ratchet at a fixed angle and the drive wheel pushing the rock core.

[0011] Further improvement of the technical solution: A strip-shaped clearance hole is provided at the bottom of the cup-shaped body. The clearance hole is used to allow the jet channel and prevent the water jet from cutting the cup-shaped body.

[0012] Further improve the technical solution: an upper limit post and a lower limit post are set on the water tank. The upper limit post and the lower limit post are used to limit the swing angle of the lever.

[0013] Further improvement to the technical solution: An overflow pipe is installed on the water tank, which is connected to the water tank to maintain the water level in the water tank.

[0014] Further improvement of the technical solution: The water jet cutting head sprays a cylindrical jet, and the distance the rock core is advanced each time is 0.7-1 times the diameter of the cylindrical jet.

[0015] Further improvement of the technical solution: The water jet cutting head sprays a square columnar jet, and the distance the rock core is advanced each time is 0.9-1 times the length of the square columnar jet.

[0016] Further improvements to the technical solution: The support wheel is a metal wheel with a cam surface structure; the clamping wheel is a rubber wheel with a concave surface structure.

[0017] Further improvement to the technical solution: The drive wheel has a double rubber wheel structure, and the ratchet is coaxially arranged between the double rubber wheels.

[0018] After implementing the above technical solution, compared with the prior art, the present invention can produce the following beneficial effects:

[0019] 1. This invention utilizes the kinetic energy of the water jet and, through the cooperation of a cup-shaped body, lever, ratchet, pawl, and drive wheel, achieves automatic core feeding by stopping feeding when the jet does not penetrate the core and feeding once it penetrates the core. This improves the efficiency of core splitting and solves the problem of wasted kinetic energy from the water jet.

[0020] 2. This invention can counteract the lateral thrust generated by the jet on the rock core, so that the rock core can only be fed forward and prevent the rock core from retracting.

[0021] 3. The present invention has a simple and ingenious structure, which does not require the setting of stepper motors, sensors and other components, and solves complex problems with a simple structure;

[0022] 4. This invention is easy to carry and maintain, making it very suitable for field operations. Attached Figure Description

[0023] Appendix Figure 1 The diagram shown is a schematic representation of the overall structure of the core water jet splitting device from one perspective.

[0024] Appendix Figure 2 The diagram shown is a schematic representation of the overall structure of the core water jet splitting device from another perspective.

[0025] Appendix Figure 3 The diagram shown is a structural schematic of the water tank.

[0026] Appendix Figure 4 The diagram shown is a schematic of the operation of a rock core water jet splitting device.

[0027] Appendix Figure 5 The attached image shows the attached image. Figure 4 Side view.

[0028] Appendix Figure 6 The diagram shown is a structural schematic of the automatic feeding mechanism.

[0029] Appendix Figure 7 The diagram shows the structure of the drive wheel and ratchet.

[0030] Appendix Figure 8 The diagram shown is a schematic of the lever structure.

[0031] Appendix Figure 9 The diagram shows the structure of the ratchet and pawl.

[0032] Appendix Figure 10 The diagram shows the structure of the upper limit post and the lower limit post.

[0033] Appendix Figure 11 The diagram shows the automatic core feeding process during jet cutting through the core.

[0034] Appendix Figure 12The diagram shown illustrates the lever's return and reset process during the feeding process.

[0035] Appendix Figure 13 The image shown is a cross-sectional view of a cylindrical jet.

[0036] Appendix Figure 14 The image shown is a cross-sectional view of a rectangular jet.

[0037] In the attached diagram: 1. Water tank; 1.1. Inclined plate; 1.2. Support; 1.3. Angle steel; 1.4. Overflow pipe; 2. Support wheel; 3. Pressure wheel; 4. Water jet cutting head; 5. Automatic feeding mechanism; 5.1. Drive wheel; 5.2. Ratchet; 5.3. Pawl; 5.4. Lever; 5.41. Rotating shaft; 5.42. Cup-shaped body; 5.43. Clearance hole; 5.5. Tension spring; 5.6. Upper limit post; 5.7. Lower limit post; 6. Rock core. Detailed Implementation

[0038] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. It should be noted that in the description of the present invention, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of the present invention. It should also be noted that in the description of the present invention, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0039] A core water jet splitting device for mineral geological exploration relates to the field of mineral geological exploration technology. The composition and working principle of the invention are described in detail below.

[0040] See attached document Figure 1 and attached Figure 2 The mineral geological exploration core water jet splitting device of the present invention mainly consists of a water tank 1, a water jet cutting head 4, a row of clamping wheels 3, two rows of support wheels 2, and an automatic feeding mechanism 5.

[0041] See attached document Figure 3The water tank 1 is an auxiliary component of the waterjet cutting system, its function being to recycle water and abrasive particles. In this embodiment, a pair of inclined plates 1.1 are welded laterally at the opening of the water tank 1, and two rows of support wheels 2 are respectively mounted on the pair of inclined plates 1.1 laterally. Three supports 1.2 are welded longitudinally on the water tank 1, and a pair of angle steels 1.3 are welded laterally on the three supports 1.2. The waterjet cutting head 4 is mounted on the middle support 1.2, and a row of pressure wheels 3 is mounted laterally on the pair of angle steels 1.3. In addition, an overflow pipe 1.4 is provided on the water tank 1, which is connected to the water tank of the waterjet. The function of the overflow pipe is to maintain the water level in the water tank and drain excess water into the water tank, realizing water reuse.

[0042] See attached document Figure 4 and attached Figure 5 The core sample is typically 70mm in diameter and dimensionally stable. During waterjet cutting, the impact force of the jet causes the core to roll and flip. Support wheels 2 are metal wheels with a cam-shaped surface structure. The two rows of support wheels 2 provide V-shaped support to the core 6, preventing it from rolling under the impact of the jet. Pressure wheels 3 are elastic rubber wheels with a concave surface structure. Their function is to apply downward pressure to the core 6, preventing it from flipping under the impact of the jet. Thus, under the constraint of pressure wheels 3 and support wheels 2, the core 6 can only move laterally along its axis. Compared to the positioning support of the core by the V-groove, the two rows of support wheels allow the core to move laterally with less resistance.

[0043] See attached document Figure 6 The automatic feeding mechanism 5 is installed inside the water tank 1, and it mainly consists of a lever 5.4, a drive wheel 5.1, and a tension spring 5.5. The drive wheel 5.1 is mounted on the water tank 1, and its function is to push the rock core 6 forward.

[0044] See attached document Figure 7 In this embodiment, the drive wheel 5.1 adopts a double rubber wheel structure, with a metal axle and a rubber wheel body. The ratchet 5.2 is coaxially arranged between the two rubber wheel bodies. The double rubber wheel structure helps to improve the driving wheel 5.1's pushing effect on the rock core 6. The two wheel bodies of the drive wheel 5.1 are made of rubber for two reasons: first, the rubber wheel body can increase the friction between the drive wheel 5.1 and the rock core 6; second, the rubber wheel body has elasticity, which can prevent the drive wheel 5.1 from over-positioning with the two rows of support wheels 2. Because the pressure wheel 3 presses the rock core 6 downwards appropriately, coupled with the weight of the rock core 6 itself, the drive wheel 5.1 has a sufficiently large frictional force to push the rock core 6 forward when it rotates.

[0045] See attached document Figure 8The lever 5.4 has a pivot 5.41, a left arm, and a right arm, with the pivot 5.41 hinged to the water tank 1. A cup-shaped body 5.42 with a concave cavity is located at the end of the left arm of the lever 5.4. The opening of the concave cavity faces the nozzle of the water jet cutting head 4. Since the water jet will cut the cup-shaped body 5.42 after penetrating the rock core, water must be injected into the water tank 1 before cutting the rock core, ensuring the water level covers the cup-shaped body 5.42. Unlike air, water has significant resistance; a pistol bullet loses its kinetic energy after penetrating one meter into water, with part of the kinetic energy converted into heat and the other part into impact water flow. For the water jet, most of the jet flow is converted into a cone-shaped, diffused impact water flow, significantly reducing the jet's cutting ability on the cup-shaped body. To completely prevent the water jet from cutting the cup-shaped body, a strip-shaped clearance hole 5.43 is provided at the bottom of the cup-shaped body. The clearance hole 5.43 provides a passage for the jet and prevents the cup-shaped body 5.42 from being cut by the jet.

[0046] See attached document Figure 9 A pawl 5.3 is hinged to the end of the right arm of lever 5.4. Pawl 5.3 engages with ratchet 5.2 under the action of a torsion spring (not shown in the figure). Ratchet 5.2 and pawl 5.3 form a common one-way intermittent motion mechanism. The teeth of ratchet 5.2 are one-way helical teeth. Pawl 5.3 is hinged to lever 5.4 and engages with the one-way helical teeth under the action of the torsion spring or gravity. When lever 5.4 swings counterclockwise, pawl 5.3 pushes ratchet 5.2 and drive wheel 5.1 to rotate counterclockwise. When lever 5.4 swings clockwise, pawl 5.3 disengages from the one-way helical teeth, and ratchet 5.2 does not rotate. When lever 5.4 swings repeatedly, ratchet 5.2 and drive wheel 5.1 can only rotate intermittently counterclockwise. Each time lever 5.4 swings, pawl 5.3 pushes ratchet 5.2 to rotate by one or more unidirectional helical teeth angles. In other words, pawl has a fixed-angle rotational effect on ratchet. In this embodiment, each time lever 5.4 swings, pawl 5.3 pushes ratchet 5.2 to rotate by one unidirectional helical tooth angle, and drive wheel 5.1 pushes rock core 6 forward a small distance.

[0047] See attached document Figure 10 The water tank 1 is also equipped with an upper limit post 5.6 and a lower limit post 5.7. The function of the upper limit post 5.6 and the lower limit post 5.7 is to limit the up and down swing position of the lever 5.4, so that the lever 5.4 has a fixed swing angle. The tension spring 5.5 is installed on the right arm of the lever 5.4. Its function is to apply a clockwise torque to the lever 5.4, so that the left arm of the lever 5.4 rests on the upper limit post 5.6.

[0048] The working principle of this invention is to use the kinetic energy of the water jet after it cuts through the rock core to achieve automatic feeding of the rock core, so that the water jet feeds the rock core when it cuts through it and stops feeding when it does not cut through it.

[0049] See attached document Figure 11 When the jet from the waterjet cutting head 4 cuts through the rock core 6 and enters the water, it forms a cone-shaped, diffused impact water flow. When the impact water flow enters the concave cavity of the cup-shaped body 5.42, the concave cavity converts the kinetic energy of the impact water flow into the power to drive the lever 5.4 to rotate. This causes the lever 5.4 to swing counterclockwise against the tension of the spring 5.5. In turn, through the fixed-angle rotation of the ratchet wheel 5.2 by the pawl 5.3 and the pushing action of the drive wheel 5.1 on the rock core 6, the rock core 6 moves forward a small distance L, thus achieving automatic feeding.

[0050] See attached document Figure 12 After core 6 is fed forward, the jet continues to cut core 6. At this time, the impact water flow disappears, lever 5.4 swings clockwise under the pull of tension spring 5.5, pawl 5.3 disengages from the previous one-way helical tooth and engages with the next one-way helical tooth under its own weight or the action of torsion spring. During this process, ratchet 5.2 and drive wheel 5.1 do not rotate, and core 6 stops feeding.

[0051] It is worth noting that when the jet continues to cut the core 6, since the left side of the cutting area is an open space while the right side is a solid area, the reflected water flow from the jet on the core will exert a lateral thrust on the core. Under normal circumstances, this lateral thrust would cause the core 6 to move to the right and retract. However, this retraction does not occur because the pawl 5.3, in addition to rotating the ratchet 5.2 at a fixed angle, also has a reverse resisting effect on the ratchet 5.2, ensuring that the ratchet 5.2 will not rotate clockwise. Furthermore, the drive wheel 5.1 can generate sufficiently large frictional force on the core 6, thus counteracting the lateral thrust and preventing the core from retracting.

[0052] See attached document Figure 13 Existing waterjet cutting heads typically use round-hole ruby ​​nozzles, which spray a cylindrical jet. The advantage of a cylindrical jet is its suitability for cutting various shapes. For core splitting, although only a straight line needs to be cut on the core, the cylindrical jet will cause unevenness in the core cut surface. This is because the ratchet and drive wheel can only rotate intermittently, resulting in intermittent core feeding. The cylindrical jet will leave a serrated, uneven cut surface on the core. To ensure thorough core cutting without adhesion, for a cylindrical jet, the distance L of core feed each time is 0.7-1 times the diameter of the cylindrical jet. Although a small portion of the jet that does not hit the core will enter the water, the resulting impact flow is weak and insufficient to cause the lever to swing.

[0053] See attached document Figure 14While the uneven cut surface does not affect the storage and testing of the core sample, it is still imperfect. Therefore, we ordered a batch of square-hole ruby ​​nozzles from the manufacturer, which spray a rectangular jet. The advantage of the rectangular jet is that even if the core feed is intermittent, the cut surface of the core remains smooth and flat. To ensure thorough cutting of the core and prevent adhesion, for the rectangular jet, the advance distance of the core for each pass is 0.9-1 times the length of the rectangular jet.

[0054] In summary, the ingenuity of this invention lies mainly in three aspects: First, by utilizing the kinetic energy of the water jet and through the cooperation of a cup-shaped body, lever, ratchet, pawl, and drive wheel, automatic core feeding is achieved by stopping feeding only when the jet has cut through the core and feeding only once it has cut through it. This improves the efficiency of core splitting and solves the problem of wasted kinetic energy from the water jet. Second, it can counteract the lateral thrust generated by the jet on the core, ensuring that the core can only move forward and preventing core retraction. Third, it eliminates the need for stepper motors, sensors, and other components, solving a complex problem with a simple structure.

[0055] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A core water jet splitting device for mineral geological exploration, characterized in that: include: The water tank has a water jet cutting head, a row of pressure rollers and two rows of support rollers at the top. The support rollers and pressure rollers are used to restrict the degree of freedom of the rock core, so that the rock core can only move along the axis. The automatic feeding mechanism is set inside the water tank and mainly consists of a lever, a drive wheel, and a tension spring. The drive wheel is used to push the rock core forward, and a ratchet is coaxially mounted on the drive wheel. A cup-shaped body is set at one end of the lever, with the opening of the cup-shaped body facing the nozzle of the water jet cutting head. A pawl is hinged to the other end of the lever, and the pawl engages with the ratchet under the action of the torsion spring. During operation, water is poured into the tank until the water surface submerges the cup-shaped body. When the jet from the waterjet cutting head cuts through the rock core and enters the water, it creates an impact flow. This impact flow acts on the cup-shaped body, causing the lever to swing against the tension of the spring. This swing is then propelled forward by the pawl rotating the ratchet at a fixed angle and the drive wheel pushing the rock core.

2. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: A strip-shaped clearance hole is provided at the bottom of the cup-shaped body. The clearance hole is used to allow the jet channel to pass through and prevent the water jet from cutting the cup-shaped body.

3. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: The water tank is equipped with an upper limit post and a lower limit post, which are used to limit the swing angle of the lever.

4. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: An overflow pipe is installed on the water tank, which is connected to the water tank to maintain the water level in the tank.

5. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: The waterjet cutting head sprays a cylindrical jet, and the distance the core is advanced each time is 0.7-1 times the diameter of the cylindrical jet.

6. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: The waterjet cutting head sprays a square columnar jet, and the distance the core is advanced each time is 0.9-1 times the length of the square columnar jet.

7. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: The support wheel is a metal wheel with a cam surface structure; the clamping wheel is a rubber wheel with a concave surface structure.

8. The core water jet splitting device for mineral geological exploration as described in claim 1, characterized in that: The drive wheel has a double rubber wheel structure, with a ratchet coaxially arranged between the two rubber wheels.

Images