Rock core sample grinding device

Abstract

The utility model belongs to the field of grinding devices, and particularly relates to a core sample grinding device. The rock core sample grinding device comprises a supporting mechanism and a cooling mechanism, the cooling mechanism comprises a cooling frame with side plates on the periphery, the top of the cooling frame is open, a supporting plate used for supporting a rock core sample so that the rock core sample can be ground is arranged at the bottom of the cooling frame, and a cooling space is defined by the supporting plate and the cooling frame jointly. A gas inlet cavity is formed in a side plate of the cooling frame, an input opening used for introducing cooling gas into the gas inlet cavity is formed in the outer wall of the side plate, gas outlet holes used for discharging the cooling gas in the gas inlet cavity into the cooling space are further formed in the inner wall of the side plate of the cooling frame, and a plurality of gas outlet holes are formed around the center of the cooling frame. During use, nitrogen can enter the cooling space through the multiple air inlets in the periphery of the air inlet cavity, the rock core sample and the periphery of the grinding device are directly and rapidly cooled, the refrigeration effect and the cooling efficiency are effectively improved, and the grinding efficiency of the loose rock core can be improved.

Description

Technical Field

[0001] The utility model relates to a core sample grinding device, belonging to the technical field of grinding devices. Background Art

[0002] In geoscience research, sandstone core sample preparation is a crucial step in pre-analysis for geochemical, physical, and mineralogical analyses. Core slicing is a crucial step in this process, polishing core samples into smoother, flatter slices of the desired thickness to enable analysis using fluorescence microscopy and other methods.

[0003] Among existing grinding devices, Chinese patent application CN115673946U, with a publication date of February 3, 2023, discloses a natural gas hydrate core grinding device system and method. The grinding device primarily comprises a controlled cooling platform (i.e., a cooling mechanism), a core fixture, and a grinding disc assembly (i.e., a grinding mechanism). Each functional component is housed in a sealed housing. The grinding disc assembly is connected to a first motor via a stepping mechanism and can be moved downward to the core fixture, where it rotates and grinds the core sample in contact. The core sample is secured to the core fixture via multiple long bolts. The core fixture is placed on the controlled cooling platform. A cooling channel is provided within the controlled cooling platform for circulating a refrigerant. Refrigerant inlets and outlets are located at both ends of the cooling channel and are connected to pipelines. A through-hole is provided in the center of the controlled cooling platform for a rotating shaft to pass through and connect to the core fixture. The controlled cooling platform cools the core fixture and core sample through heat exchange. Clearly, heat exchange provides poor cooling efficiency and cannot quickly cool the core fixture and core sample. The grinding device is also equipped with a gaseous cooling device, including a liquid cooling medium vaporization device to generate a gaseous cooling medium. The gaseous cooling medium nozzle is connected via a pipeline and is positioned on one side of the core clamp and facing the core clamp. The nozzle directly sprays the gaseous cooling medium into the core clamp through the nozzle, thereby improving the overall cooling effect based on the heat exchange cooling of the controlled cooling table. However, the device only has a single gaseous cooling medium nozzle, which can only spray cooling gas into the core clamp from a single direction, resulting in poor cooling effect and inability to immerse the core sample in the cooling medium environment.

[0004] Therefore, the cooling effect of the cooling mechanism of the above-mentioned core grinding device is poor and the cooling efficiency is low, especially for loose cores with low structural strength. Before grinding, they need to be soaked in liquid nitrogen to increase the strength, and then placed in the grinding device for grinding. Therefore, the above-mentioned core grinding device needs to add an additional liquid nitrogen soaking process when in use, which reduces the grinding efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a core sample grinding device to solve the problems of poor refrigeration effect and low cooling efficiency of the cooling mechanism and low grinding efficiency caused by multiple steps when grinding loose cores.

[0006] To achieve the above objectives, the core sample grinding device in the present invention adopts the following technical solutions:

[0007] A core sample grinding device includes a supporting mechanism and a cooling mechanism arranged on the supporting mechanism, the cooling mechanism includes a cooling frame with side panels on all sides, the top of the cooling frame is open, and the bottom of the cooling frame is provided with a supporting plate for supporting the core sample for grinding the core sample, the supporting plate and the cooling frame together form a cooling space for cooling the core sample, an air inlet cavity is provided inside the side panel of the cooling frame, and an input port for introducing cooling gas into the air inlet cavity is provided on the outer wall of the side panel, and an air outlet hole for discharging the cooling gas in the air inlet cavity into the cooling space is also provided on the inner wall of the side panel of the cooling frame, and a plurality of air outlet holes are provided around the center of the cooling frame.

[0008] The beneficial effect of the above technical solution is that: the utility model is an improved invention, in which a cooling frame with an open top and side panels is set in the cooling mechanism of the grinding device, and the bottom of the cooling frame is set as a support plate for placing the core to provide support for it during grinding. The cooling frame and the support plate together form a cooling space for accommodating the cooling medium. An input port is set on the outer wall of the cooling frame side plate and an air inlet cavity is set inside. During use, the cooling medium can enter the air inlet cavity through the input port on the outer wall of the cooling frame side plate, and then enter the cooling space through multiple air outlets set around the center of the cooling frame, contacting the core sample and the grinding mechanism from multiple positions, cooling rapidly, and effectively improving the cooling efficiency of the cooling mechanism. At the same time, the cooling medium is input into the center of the cooling frame from multiple positions, and the core sample can also be quickly immersed in the cooling medium, thereby improving the cooling efficiency and refrigeration effect. Therefore, for loose cores, the process of immersing the core in the refrigeration medium to increase the strength can be saved during use, thereby improving the efficiency of the grinding.

[0009] Furthermore, the side panel of the cooling frame includes a side panel body and a baffle separately arranged on the inner side of the side panel body. A groove is provided on the side panel body. The baffle and the groove together form the air inlet cavity. The air outlet is provided on the baffle.

[0010] Furthermore, baffles higher than the upper surface of the support plate are arranged around the support plate, and the baffles are located on the inner side of the guardrail.

[0011] Furthermore, one of the support plate and the baffle is provided with a protrusion extending up and down, and the other is provided with a groove extending up and down for the protrusion to be embedded in.

[0012] Furthermore, the cooling frame is square, and the side panels around the cooling frame are vertically connected in sequence.

[0013] Furthermore, at least two input ports are provided, and each input port is located on a side plate on the same side of the cooling frame.

[0014] Furthermore, the core sample grinding device also includes a grinding mechanism arranged on the supporting mechanism, the grinding mechanism includes a first guide column and a second guide column arranged vertically and in parallel, the outer guide sleeves of the first guide column and the second guide column are provided with an upper mounting plate, the grinding mechanism also includes a grinding motor fixed on the upper mounting plate, the output shaft of the grinding motor is connected to a grinding member for grinding the core sample, the upper mounting plate is connected to a control mechanism for controlling the downward movement of the upper mounting plate, and the grinding mechanism also includes an elastic member that is deformed by force when the upper mounting plate moves downward to provide power for the upward reset of the upper mounting plate.

[0015] Furthermore, a lower mounting plate is fixedly provided on the first guide column below the upper mounting plate, and the second guide column is directly or indirectly fixed on the lower mounting plate. The elastic member is a compression spring which is sleeved on the outside of the second guide column and the upper and lower ends respectively press against the upper mounting plate and the lower mounting plate.

[0016] Furthermore, the control mechanism includes a first rotating rod and a second rotating rod. The first rotating rod is rotatably mounted on the upper mounting plate. One end of the first rotating rod is hinged to the second rotating rod. The other end of the first rotating rod constitutes an operating part for manual downward operation. The other end of the second rotating rod is hinged to the lower mounting plate.

[0017] Furthermore, the grinding mechanism further includes an adjustment plate arranged below the first guide post, and the first guide post is mounted on the adjustment plate along a direction that allows it to approach or move away from the cooling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of an embodiment of a core sample grinding device of the present utility model;

[0019] Figure 2 A schematic diagram of the cooling mechanism of an embodiment of the core sample grinding device of the present utility model;

[0020] Figure 3 This is an embodiment of the core sample grinding device of the utility model Figure 2 A in the middle is an enlarged schematic diagram;

[0021] Figure 4 This is a schematic structural diagram of another perspective of an embodiment of the core sample grinding device of the present utility model;

[0022] Figure 5 This is a schematic diagram of the grinding mechanism of an embodiment of the core sample grinding device of the present utility model.

[0023] In the figure: 1. Support mechanism; 101. Top plate; 102. Table leg; 103. Support plate; 2. Cooling mechanism; 201. First support plate; 202. Cooling frame; 203. Railing; 204. Second support plate; 205. T-slot; 206. Baffle; 207. Electric telescopic machine; 208. Input port; 3. Grinding mechanism; 301. Adjusting plate; 302. Guide plate; 303. First guide column; 304. First fixing sleeve; 305. Lower mounting plate; 306. Upper mounting plate; 307. Second fixing sleeve; 308. Second guide column; 309. Spring; 310. Grinding motor; 311. Rotating rod; 312. First fixed block; 313. First rotating rod; 314. Second rotating rod; 315. Second fixed block. DETAILED DESCRIPTION

[0024] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0025] In response to the technical problems existing in the prior art, the basic technical concept of the present invention is as follows: a cooling frame is set in the cooling mechanism of the core sample grinding device, side panels are set around the cooling frame and the top is open, an air inlet cavity is set inside the side panels of the cooling frame, a cooling medium input port is set on the outer wall of the side panel, and multiple air outlet holes are set on the inner wall of the side panel. By setting the air outlet holes around the center of the cooling frame, the cooling medium enters the air inlet cavity through the input port and then enters the cooling space through the air outlet holes around the center of the cooling frame, cooling the core sample and multiple parts of the grinding mechanism at the same time, thereby improving the cooling efficiency and refrigeration effect. At the same time, the cooling medium enters around the center of the cooling frame and can continuously reach the four sides of the core sample, immersing it in the cooling medium environment, reducing the grinding process of the loose core and improving the grinding efficiency.

[0026] The embodiment of the core sample grinding device in the utility model:

[0027] like Figure 1 As shown in FIG, the core sample grinding device includes a support mechanism 1, a cooling mechanism 2 and a grinding mechanism 3 arranged on the support mechanism. Figure 2 、 3 As shown, the support mechanism 1 includes a top plate 101, a first support plate 201 is arranged above the top plate 101, a table corner 102 is arranged below the top plate 101, and a support plate 103 is connected between the two table corners 102 on opposite sides to make the device more stable.

[0028] like Figure 2As shown, the cooling mechanism 2 includes a cooling frame 202. In this embodiment, the cooling frame 202 is formed of side panels connected vertically in sequence. Specifically, the cooling frame 202 is square. An air inlet cavity is provided inside the side panels of the cooling frame 202. The air inlet cavity includes a side panel body and a separate baffle 203 provided inside the side panel body. The side panel body is provided with a groove, which forms a cavity with the baffle 203. The baffle 203 is provided separately inside the cooling frame and has multiple air inlet holes surrounding the center of the cooling frame 202. Two cooling medium inlet ports 208 are provided on the outer wall of the side panels of the cooling frame 202. The inlet ports 208 are symmetrically arranged on the outer side of the cooling frame 202 near the wide side of the top plate 101 of the support structure 1. In other embodiments, the two inlet ports can also be arranged asymmetrically. The cooling medium in this embodiment is liquid nitrogen, which enters the air inlet cavity through the input port. At this time, the liquid nitrogen has been gasified into nitrogen gas, which can be discharged from multiple air outlet holes of the baffle, so that multiple parts of the core sample and the grinding tool are in contact with the nitrogen gas at the same time and immersed in the nitrogen gas, thereby achieving the purpose of rapid cooling.

[0029] A first support plate 201 is provided at the bottom of the cooling frame 202, and a second support plate 204 is placed on the top of the first support plate 201, and the second support plate 204 is inside the cooling frame 202. The second support plate 204 and the cooling frame 202 together enclose a cooling space for cooling the core sample. When in use, the core sample is placed on the second support plate 204, and the second support plate 204 provides support for the core sample when being ground. An electric telescopic machine 207 is connected to the bottom of the second support plate 204, and corresponding positions on the first support plate 201 and the top plate 101 are provided with through holes for the electric telescopic machine 207 to pass through. The second support plate 204 can move up and down along the railing in the cooling space. When placing or taking the core sample, the second support plate 204 can be lifted by the electric telescopic machine 207 for easy operation. Figure 3 As shown, the second support plate 204 is provided with embedded grooves around its perimeter. In this embodiment, T-slots 205 are used, with two T-slots 205 provided on each of the four sides of the second support plate 204. Baffles 206, which are higher than its upper surface, are provided around the second support plate 204. These serve as a boundary for the movement of the core sample on the second support plate 204 and also collect grinding debris, preventing it from falling into the air inlet chamber through the air outlet. Each baffle 206 is provided with a protrusion (not shown) at the position corresponding to the T-slot 205. The protrusion is vertically inserted into the corresponding T-slot 205, connecting the second support plate 204 and the baffle 206 together, making the up and down movement of the second support plate 204 more convenient.

[0030] like Figure 4 、 5As shown, the grinding mechanism 3 includes an adjustment plate 301, which is arranged above the top plate 101. The adjustment plate 301 has symmetrical slots on both sides. A guide plate 302 is provided on the adjustment plate 301. The guide plate 302 includes a central annular plate and two elongated plates extending outward on both sides. The ends of the elongated plates are fixedly connected to the corresponding slots on the adjustment plate 301 by screws, so that the position of the guide plate 302 on the adjustment plate can be adjusted through the slots. A first guide post 303 is fixedly connected to the inner portion of the annular plate in the middle of the guide plate 302. The upper end of the first guide post 303 is provided with an upper mounting plate 306 as a guide sleeve. The upper mounting plate 306 extends toward the cooling mechanism. A motor 310 is fixed to the upper mounting plate 306. The motor 310 is located at the end of the upper mounting plate 306 away from the first guide post 303. A rotating rod 311 is provided at the output end below the motor 310. The rotating rod 311 is a grinding member and passes through the upper mounting plate 306 and is located below it. A through-hole is provided in the middle of the upper mounting plate 306 for the second guide post 308 to pass through. The lower mounting plate 305 is sheathed around the center of the first guide post 303. A first fixing sleeve 304 is positioned below the lower mounting plate 305 to support it. A second fixing sleeve 307 is positioned below the lower mounting plate 305, at the end away from the first fixing sleeve 304. A second guide post 308 is fixedly positioned in the middle of the second fixing sleeve 307, indirectly securing it to the mounting plate 305. An elastic member sheathes the second guide post 308. The upper and lower ends of the elastic member bear against the upper and lower mounting plates, respectively, providing the force for the upper mounting plate 306 to return upward after being pressed downward. In this embodiment, the elastic member is a compression spring.

[0031] The upper and lower mounting plates 306 and 305 are equipped with a control mechanism for controlling the downward movement of the upper mounting plate. The control mechanism includes a first fixed block 312, which is fixed to one end of the lower mounting plate 305 near the first guide post 303. One end of a first rotating rod 313 is hingedly connected to the outer portion of the first fixed block 312. A second rotating rod 314 is hingedly connected to the other end of the first rotating rod 313. A second fixed block 315 is fixedly mounted in the middle of the second rotating rod 314. The other side of the second fixed block 315 is fixedly connected to the upper mounting plate 306, rotatably mounted on the upper mounting plate 306. The suspended end of the second rotating rod 314 serves as an operating unit. Pressing the operating unit downward drives the upper mounting plate 306 downward via the second fixed block 315, causing the motor 310 on the upper mounting plate 306 to move downward, which in turn causes the rotating rod 311 to move downward, contacting the core sample and grinding it.

[0032] Working principle: When cooling is required, liquid nitrogen can enter the air inlet cavity inside the cooling frame 202 through the input port 208. After being briefly intercepted in the air inlet cavity, it enters the cooling space through the multiple air outlet holes arranged on the baffle around the center of the cooling frame, and contacts the core sample and the grinding mechanism from multiple positions to quickly cool it. The setting of multiple air outlet holes can improve the cooling efficiency and refrigeration effect of the cooling mechanism 2. At the same time, the cooling medium is input into the center of the cooling frame from multiple positions, so that the core sample can be quickly immersed in the cooling medium and continuously immersed. For loose cores, they can be directly immersed in nitrogen when on the second support plate, reducing the grinding process and improving the grinding efficiency. During grinding, the upper mounting plate 306 can be driven downward by pressing the operating part of the second rotating rod 314, so that the motor 310 and the rotating rod 311 move downward until they contact the core sample and rotate and grind it. After the grinding work is completed, the operating portion of the second rotating rod 314 is moved upward to lift the rotating rod 311, and then the electric telescopic rod 207 is started to lift the second supporting plate 204 upward, making it convenient for the staff to take out the sample for subsequent operations.

[0033] In other embodiments, when providing a support plate at the bottom of the cooling frame, only one bottom support plate may be provided, which is directly placed on the top plate and connected to the electric telescopic machine.

[0034] In other embodiments, when setting the air inlet cavity, the baffle can be set as an integrated structure with the cooling frame, such as integrally formed by injection molding, 3D printing, etc., to form an air inlet cavity inside the side plate of the cooling frame, and form multiple air outlet holes.

[0035] In other embodiments, when a cooling frame is provided, the cooling frame may be provided in a circular or elliptical shape.

[0036] In other embodiments, when the cooling medium input port is provided, the input port can be provided as three, four, or more than two. Of course, the input port can also be provided on different side panels of the cooling frame.

[0037] In other embodiments, when the baffle is provided, the baffle may be directly adhered to the four sides of the second support plate, or fixed to the four sides of the support plate by screws.

[0038] In other embodiments, when setting the connection relationship between the second support plate and the baffle, an embedding groove may be provided on the baffle, and an embeddable protrusion may be provided at a corresponding position on the second support plate.

[0039] In other embodiments, when the embedding groove is provided, a dovetail groove may be provided, and corresponding protrusions may be provided on the baffle. Of course, other types of embedding grooves may also be provided.

[0040] In other embodiments, when an elastic member is provided to provide power for the upper mounting plate to reset upward, the elastic member may be provided as a rubber column with relatively strong elasticity, or other elastic members with relatively strong elasticity and restoring ability.

[0041] In other embodiments, when setting a spring, such as a tablet grinder for clinical medicine disclosed in the patent with authorization announcement number CN216296418U, a box is set outside the grinding device, connected to the rotating shaft at the top of the box, and a through-hole for the rotating shaft to pass through is set at the corresponding position of the top of the box. A tension spring is sleeved on the part of the rotating shaft extending into the box, and the top of the tension spring is fixed to the top of the box. A transmission rocker is hinged on the side of the box, and the transmission rocker is provided with a through-hole for the rotating shaft to pass through. The transmission rocker and the rotating shaft are connected by a pin shaft passing through the two, and long holes for the pin shaft to pass through are set on both sides of the transmission rocker. The pin shaft is movably set in the long hole, and an operating long rod is fixed on the opposite side of the transmission rocker and the box body. The operating long rod is pressed down, and the rotating shaft is moved downward by the pin shaft to grind the sample, and in this process, the tension spring is deformed under force, so that when the operating long rod is released, the rotating shaft can be reset upward.

[0042] In other embodiments, when setting the fixing method of the second guide rod, the second guide rod can be directly bonded and fixed to the top of the lower mounting plate, or fixed to the top of the lower mounting plate by bolts.

[0043] In other embodiments, when setting up the control mechanism, a column can be vertically fixed on the top plate of the adjustment plate or the support mechanism, a laterally extending connecting rod is hinged at the upper end of the column, a tension spring is connected between the top of the column and the middle of the connecting rod, a vertical rod parallel to the column is connected to the connecting rod, the vertical rod is located above the upper mounting plate, and the connecting rod is pressed downward to press the upper mounting plate downward. During this process, the tension spring is deformed by the force, which can provide power for the connecting rod to reset upward.

[0044] In other embodiments, when the adjustable movement below the first guide post is set, the guide plate can be directly set to an annular plate. Of course, the guide plate can also be directly set on the top plate without the adjustment plate.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A core sample grinding device, comprising a support mechanism and a cooling mechanism disposed on the support mechanism, characterized in that: The cooling mechanism includes a cooling frame with side panels on all sides. The top of the cooling frame is open, and a support plate is provided at the bottom of the cooling frame for supporting the core sample for grinding the core sample. The support plate and the cooling frame together form a cooling space for cooling the core sample. An air inlet cavity is provided inside the side panel of the cooling frame, and an input port for introducing cooling gas into the air inlet cavity is provided on the outer wall of the side panel. An air outlet hole is also provided on the inner wall of the side panel of the cooling frame for discharging the cooling gas in the air inlet cavity into the cooling space. There are multiple air outlet holes arranged around the center of the cooling frame.

2. The core sample grinding device according to claim 1, characterized in that: The side plate of the cooling frame includes a side plate body and a baffle separately arranged inside the side plate body. A groove is arranged on the side plate body. The baffle and the groove together form the air inlet cavity. The air outlet is arranged on the baffle.

3. The core sample grinding device according to claim 2, characterized in that: Baffles higher than the upper surface of the supporting plate are arranged around the supporting plate, and the baffles are located on the inner side of the guardrail.

4. The core sample grinding device according to claim 3, characterized in that: One of the supporting plate and the baffle is provided with a protrusion extending up and down, and the other is provided with a groove extending up and down for the protrusion to be embedded.

5. The core sample grinding device according to any one of claims 1 to 4, characterized in that: The cooling frame is square, and the side panels around the cooling frame are vertically connected in sequence.

6. The core sample grinding device according to claim 5, characterized in that: At least two input ports are provided, and each input port is located on a side plate on the same side of the cooling frame.

7. The core sample grinding device according to any one of claims 1 to 4, characterized in that: The core sample grinding device also includes a grinding mechanism arranged on the supporting mechanism, the grinding mechanism includes a first guide column and a second guide column arranged vertically and in parallel, the outer guide sleeves of the first guide column and the second guide column are provided with an upper mounting plate, the grinding mechanism also includes a grinding motor fixed on the upper mounting plate, the output shaft of the grinding motor is connected to a grinding member for grinding the core sample, the upper mounting plate is connected to a control mechanism for controlling the downward movement of the upper mounting plate, and the grinding mechanism also includes an elastic member that is deformed by force when the upper mounting plate moves downward to provide power for the upward reset of the upper mounting plate.

8. The core sample grinding device according to claim 7, characterized in that: A lower mounting plate is fixedly provided on the first guide column below the upper mounting plate, and the second guide column is directly or indirectly fixed to the lower mounting plate. The elastic member is a compression spring which is sleeved on the outside of the second guide column and has upper and lower ends respectively pressed against the upper mounting plate and the lower mounting plate.

9. The core sample grinding device according to claim 8, characterized in that: The control mechanism includes a first rotating rod and a second rotating rod. The first rotating rod is rotatably mounted on the upper mounting plate. One end of the first rotating rod is hinged to the second rotating rod. The other end of the first rotating rod constitutes an operating part for manual downward operation. The other end of the second rotating rod is hinged to the lower mounting plate.

10. The core sample grinding device according to claim 7, characterized in that: The grinding mechanism further comprises an adjusting plate arranged below the first guide post, and the first guide post is mounted on the adjusting plate in a direction in which it can approach or move away from the cooling mechanism.

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