Automatic low-carbon ferrochrome sample collection system and sample preparation method thereof

Abstract

The invention discloses a low carbon ferrochrome sample automatic collection system and a sample preparation method thereof, the system comprises a workbench and a drilling machine, the workbench is provided with two support plates, and the top ends of the two support plates are jointly provided with a bench clamp for clamping a low carbon ferrochrome sample block. According to the device, the sample receiving bag and the protective barrel cover are arranged to be matched, the protective barrel cover blocks a sample splashing in the drilling process, so that the sample falls in the coverage range of the protective barrel cover, and the sample receiving bag is arranged in a gap reserved in the bottom end in the range of the protective barrel cover and can be stably placed; a spraying mechanism is matched to achieve cooling treatment of a drill bit and drilling cutting samples, drilling cuttings can be washed away, full collection of the drilling cutting samples is achieved, waste of the samples is reduced, a sample receiving bag is convenient to shape and maintain and wide in adaptability, the sample receiving bag is positioned and installed through a positioning convex ring and an adjusting part, the stability of a protective cylinder cover is improved, and the service life of the protective cylinder cover is prolonged. The equipment can be operated by one hand without being cooled by left-hand running water and operated by right hand.

Description

Technical Field

[0001] The invention relates to the technical field of metal sample preparation, in particular to an automatic low-carbon ferrochrome sample collection system and a sample preparation method thereof. Background Art

[0002] Low-carbon ferrochrome is a very important material in steel smelting. Adding it to steel can significantly improve the oxidation resistance of steel and increase its corrosion resistance. Its main components are chromium and iron. In addition, it also contains impurities such as carbon, silicon, sulfur, and phosphorus. The carbon content in low-carbon ferrochrome is generally 0.15% to 0.5%. Low-carbon ferrochrome has the characteristics of high hardness and wear resistance, which makes it difficult to prepare samples for chemical analysis of low-carbon ferrochrome. The chemical composition test of low-carbon ferrochrome needs to be carried out in accordance with "GB / T4010-2015 Collection and Preparation of Samples for Chemical Analysis of Ferroalloys". Drilling points are randomly selected on the cross section of the sample block. The drill bit is cooled by running water during the drilling process. The drilling time for each sample should not be too long to prevent the sample from overheating and oxidation. The sample should be dried when it is wet, and the temperature should be controlled below 100°C. The dried sample is first sieved with a 0.154mm sieve to discard the sieve to remove foreign inclusions, or magnetic adsorption is used to remove foreign inclusions. For the samples composed of graded batches, the grinding time for each time shall not exceed 15s, and the particle size of the sample after grinding shall not exceed 1.6mm. Then it shall be reduced. The weight of each test sample for chemical analysis shall not be less than 50g.

[0003] At present, in the process of low-carbon ferrochrome sampling, a tabletop drill is mainly used for drilling cuttings. During the drilling process, running water is used to cool the drill bit. During the drilling process, one person uses running water with his left hand to cool the equipment with his right hand. However, there is no protection during the drilling process and there is no receiving device for the sample. Drilling without protection is prone to splashing, which poses a safety hazard; without a receiving device, it is easy to cause sample contamination, splashing, and difficulty in collection.

[0004] Therefore, it is necessary to develop an automatic collection system for low-carbon ferrochrome samples and a sample preparation method thereof. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an automatic collection system for low-carbon ferrochrome samples and a sample preparation method thereof in view of the deficiencies of the above-mentioned prior art. A sample receiving bag and a protective tube cover are arranged to cooperate with each other. The protective tube cover blocks the samples splashed during the drilling process, so that the samples fall within the coverage of the protective tube cover. The sample receiving bag is placed in a reserved gap at the bottom within the range of the protective tube cover and can be placed stably. The drill bit and drill cuttings samples can be cooled by cooperating with a spray mechanism, and the drill cuttings can be flushed away. The protective tube cover is positioned and installed by a positioning convex ring and an adjusting part, thereby improving the stability of the protective tube cover and realizing one-handed operation of the equipment. There is no need to use the left hand for running water cooling and the right hand for operating the equipment, so as to solve the problems raised in the background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] An automatic low-carbon ferrochrome sample collection system comprises a workbench and a drilling machine, wherein two support plates are arranged on the workbench, and a bench vise is arranged on the top of the two support plates for clamping a low-carbon ferrochrome sample block, and a drill head component of the drilling machine is located directly above the low-carbon ferrochrome sample block and can drill cuttings from the low-carbon ferrochrome sample block, and a gap is reserved between the two support plates, and a sample receiving bag is arranged in the gap for collecting drill cuttings samples;

[0008] A protective sleeve cover is arranged outside the drill head component of the drilling machine, and the inner diameter of the bottom end thereof is larger than the inner diameter of the top end. A positioning convex ring is installed on the bench vise, and an adjusting part is arranged on the positioning convex ring, which is used to install the protective sleeve cover and make the protective sleeve cover coaxially distributed with the drill head component of the drilling machine;

[0009] The protective cylinder cover is provided with a spray mechanism, which includes a delivery main pipe, a shunt pipe and a water delivery hose. There are two water delivery hoses. The delivery main pipe is connected to the shunt pipe, and the two water delivery hoses are respectively connected to the two ends of the shunt pipe. A nozzle is installed at the other end of the water delivery hose. A support part for connecting the water delivery hose is installed on the protective cylinder cover, and the support part can adjust the direction of the water delivery hose and the nozzle. A water pump is provided at the input end of the delivery main pipe, and an electromagnetic valve is provided in the delivery main pipe for delivering spray water and controlling the water flow rate.

[0010] The outer wall of the sample receiving bag is penetrated with a water leakage hole, and the upper surface of the workbench is provided with a drainage groove.

[0011] Preferably, through holes are opened on both sides of the protective tube cover and are distributed in an axisymmetric manner, the water supply hose passes through the through holes, and a gasket is arranged between the through hole and the water supply hose, and the gasket is made of rubber material, and both ends of the gasket extend out of the through holes;

[0012] The two nozzles are symmetrically distributed along the extension direction of the vise jaws, and a connecting line between the two nozzles intersects with the central axis of the drill head component of the drilling machine.

[0013] Preferably, the support part is configured as an electric push rod, a free end of which is hinged with a collar, the other end of which is connected to the inner wall of the protective tube cover, and the collar is sleeved on the outside of the water delivery hose.

[0014] Preferably, the positioning convex ring is buckled on the inner bottom end of the protective tube cover, and the inner side wall of the positioning convex ring is set as a wedge-shaped inclined surface, and the two sides of the positioning convex ring are integrally provided with extension plates for erecting and supporting on the top of the vise;

[0015] The adjusting part includes a bidirectional screw rod, a sliding groove is opened at the bottom of the extension plate, and the bidirectional screw rod is rotatably connected to the inner side of the bidirectional screw rod, and a torsion handle is fixedly connected to the end of the bidirectional screw rod. Two axially symmetrically distributed positioning blocks are threadedly sleeved on the outer side of the bidirectional screw rod, and the outer sides of the two positioning blocks in the same group are respectively abutted against the two side walls of the vise clamp.

[0016] Preferably, the sample receiving bag is configured as a foldable structure, and the sample receiving bag is made of aluminum foil.

[0017] Preferably, the length of the unfolded sample receiving bag matches the inner diameter of the bottom end of the protective tube cover, and the distance between the bottom surface of the bench vise and the upper surface of the workbench matches the height of the unfolded sample receiving bag.

[0018] Preferably, the number of the water leakage holes is set to be multiple, and the top end of the sample receiving bag is set to be an arc-shaped gradually expanding structure.

[0019] Preferably, an observation hole is opened on the side wall of the protective tube cover, an observation window is arranged in the observation hole, and the observation window is made of organic glass.

[0020] The automatic low-carbon ferrochrome sample collection system also includes an intelligent control module, which includes a processor, a weighing plate, a first online temperature sensor and a second online temperature sensor. The weighing plate is placed on a workbench and is used to sense the mass of the drill cuttings sample collected in the sample receiving bag. The first online temperature sensor and the second online temperature sensor are used to sense the surface temperature signals of the drill head component of the drilling machine and the drill cuttings sample collected in the sample receiving bag, respectively, and feed the sensing signals back to the processor.

[0021] The input end of the processor is electrically connected to an A / D converter and a D / A converter, and the connection end of the processor is also electrically connected to a display screen for displaying sensing data. The weighing plate, the first online temperature sensor and the second online temperature sensor are all electrically connected to the A / D converter, and the solenoid valve, water pump, electric push rod and drilling machine are all electrically connected to the D / A converter.

[0022] The method for preparing a low-carbon ferrochrome sample using the automatic low-carbon ferrochrome sample collection system comprises the following steps:

[0023] Step 1, clamp the low-carbon ferrochrome sample block in the jaws of a bench vise, unfold the folded sample receiving bag, and shape it so that its top is in an arc-shaped and gradually expanded shape, and a plurality of water leakage holes are pierced on the sample receiving bag;

[0024] Step 2, placing the shaped sample receiving bag in the gap directly below the low-carbon ferrochrome sample block, so that the inner cavity area of ​​the sample receiving bag can cover the falling range of the drill cuttings sample of the low-carbon ferrochrome sample block;

[0025] Step 3, place the positioning convex ring on the vise, so that the positioning convex ring and the drill head of the drilling machine are coaxially distributed, and then rotate the two twist handles to drive the two-way screw rods to move the two sets of positioning blocks outward, so that the positioning convex ring is fixed by four-point support;

[0026] Step 4, sleeve the protective tube cover on the positioning convex ring, control the drilling machine to work, and the drill bit component rotates and moves downward to drill cuttings from the low-carbon ferrochrome sample block. At the same time, a spray mechanism is used to spray the surface of the drill bit component and the low-carbon ferrochrome sample block, and the cuttings samples produced thereon fall into a sample receiving bag for collection;

[0027] Step 5: Use an intelligent control module to supervise the collection process of drill cuttings samples, monitor the surface temperature of the drill bit components and the drill cuttings samples during drilling, adjust the spraying position in time, spray water to cool the drill bit components and the drill cuttings samples, and the water falling into the sample receiving bag flows out from the leaking hole and is further discharged from the drainage trough;

[0028] Step 6: Use a weighing plate to sense the mass of the drill cuttings sample collected in the sample receiving bag. When the set weight value is reached, control the drilling machine and the water pump to stop working, take out the sample receiving bag containing the drill cuttings sample, and drain all the water for standby use;

[0029] Step 7: Place the drill cuttings sample collected in step 6 in an oven for drying, and finally obtain a low-carbon ferrochrome sample through a sample preparation and grinding device.

[0030] The present invention has the following beneficial effects:

[0031] 1. The sample receiving bag and the protective tube cover are arranged to cooperate. The protective tube cover blocks the splashed samples during the drilling process, so that the samples fall into the coverage of the protective tube cover. The sample receiving bag is placed in the reserved gap at the bottom of the protective tube cover, and can be placed stably. The spray mechanism is used to cool the drill bit and the drill cuttings, and the drill cuttings can be washed away to fully collect the drill cuttings, thereby reducing the waste of samples. The sample receiving bag is easy to shape and maintain, and has a wide adaptability. The protective tube cover is positioned and installed through the positioning convex ring and the adjustment part, which improves its stability and realizes single-handed operation of the equipment. There is no need to use the left hand to cool the equipment with running water, and the right hand can be used to operate the equipment, thereby reducing the difficulty of work and improving work efficiency and safety.

[0032] 2. Make the bottom end of the drill bit contact the low-carbon ferrochrome sample block, and use the contact point as the drilling point. Adjust the electric push rod to make the nozzle face the drilling point. Control the drill bit of the drilling machine to rotate and move downward to drill the low-carbon ferrochrome sample block. At the same time, use a spray mechanism to spray water at the drilling point to cool it down. Cooperate with the intelligent control module, when the temperature of the drill bit rises above the set value, control the nozzle to move upward. When the temperature of the upper surface of the drill cuttings sample rises above the set value, control the nozzle to move downward. Spray and cool the drill bit and the surface of the low-carbon ferrochrome sample block in time to ensure the cooling effect and ensure that the temperature of the drill cuttings sample is not too high. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The overall structural schematic diagram of the automatic low-carbon ferrochrome sample collection system provided by the present invention;

[0034] Figure 2 It is a first-view stereoscopic diagram of the protective tube cover, the positioning convex ring, the adjustment part and the spray mechanism in the present invention;

[0035] Figure 3 A second perspective stereogram of the protective tube cover, the positioning convex ring, the adjustment part and the spray mechanism in the present invention;

[0036] Figure 4 It is a front view of the protective tube cover, the positioning convex ring, the adjustment part and the spray mechanism in the present invention;

[0037] Figure 5 For the present invention Figure 4 Schematic diagram of the AA section structure;

[0038] Figure 6 A three-dimensional diagram of the sample receiving bag (folded and not punctured) in the present invention;

[0039] Figure 7 A three-dimensional diagram of the sample receiving bag (in an unfolded and punctured state) in the present invention;

[0040] Figure 8 The present invention provides a system control flow chart of the automatic low-carbon ferrochrome sample collection system in cooperation with an intelligent control module.

[0041] Among them are:

[0042] Workbench-1; drilling machine-2; support plate-3; bench vise-4; low carbon chromium iron sample block-5; sample receiving bag-6; protective tube cover-7; positioning convex ring-8; adjustment part-9; spray mechanism-10; support part-11; leakage hole-12; drainage groove-13; extension plate-14; observation window-15; processor-16; weighing plate-17; first online temperature sensor-18; second online temperature sensor-19; display screen-20;

[0043] Bidirectional screw-901; slide-902; twist handle-903; positioning block-904;

[0044] Delivery main pipe-101; diversion pipe-102; water delivery hose-103; nozzle-104; water pump-105; solenoid valve-106; gasket-107;

[0045] Electric push rod-111; collar-112. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0047] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second" and the like do not indicate the importance of the components, and therefore cannot be understood as limiting the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0048] like Figure 1-8 As shown, a low-carbon ferrochrome sample automatic collection system includes a workbench 1 and a drilling machine 2. Two support plates 3 are arranged on the workbench 1, and a vise 4 is arranged on the top of the two support plates 3 for clamping a low-carbon ferrochrome sample block 5. In this embodiment, the drilling machine 2 and the vise 4 are both existing products, which will not be described in detail in this application, that is, the products purchased on the market are selected and assembled to achieve the function. The drill head component of the drilling machine 2 is located directly above the low-carbon ferrochrome sample block 5 and can drill the low-carbon ferrochrome sample block 5. A gap is reserved between the two support plates 3, and a sample receiving bag 6 is arranged in the gap for collecting drill cuttings samples;

[0049] A protective sleeve cover 7 is arranged outside the drill head component of the drilling machine 2, and the inner diameter of the bottom end thereof is larger than the inner diameter of the top end. This structure is similar to an inverted cover with an opening at the top end, so that the drill head component of the drilling machine 2 can be inserted from the opening at the top end thereof and pass through the inner axial center portion of the protective sleeve cover 7; a positioning convex ring 8 is installed on the bench vise 4, and the positioning convex ring 8 and the bench vise 4 can be detachably installed, and an adjusting portion 9 is arranged on the positioning convex ring 8 for installing the protective sleeve cover 7 and making the protective sleeve cover 7 coaxially distributed with the drill head component of the drilling machine 2;

[0050] A spray mechanism 10 is provided on the protective barrel cover 7, which includes a main delivery pipe 101, a shunt pipe 102 and a water supply hose 103. There are two water supply hoses 103. The main delivery pipe 101 is connected to the shunt pipe 102, and the two water supply hoses 103 are respectively connected to the two ends of the shunt pipe 102. A nozzle 104 is installed at the other end of the water supply hose 103. A support part 11 for connecting the water supply hose 103 is installed on the protective barrel cover 7, and the support part 11 can adjust the direction of the water supply hose 103 and the nozzle 104. A water pump 105 is provided at the input end of the main delivery pipe 101, and a solenoid valve 106 is provided in the main delivery pipe 101 for delivering spray water and controlling the water flow rate;

[0051] A water leakage hole 12 is penetrated through the outer wall of the sample receiving bag 6, and a drainage groove 13 is opened on the upper surface of the workbench 1. One end of the drainage groove 13 is open, and a closing plate is provided at the other end. The bottom wall of the drainage groove 13 is inclined to facilitate the discharge of flushing water from the one-way outlet to avoid liquid accumulation.

[0052] Further, as a preferred embodiment, through holes are opened on both sides of the protective tube cover 7 and are distributed in an axisymmetric manner. The water supply hose 103 passes through the through holes, and a gasket 107 is arranged between the through hole and the water supply hose 103. The gasket 107 is made of rubber material, and through holes extend from both ends of the gasket 107. The gasket 107 has the effect of guiding and buffering the water supply hose 103, thereby extending the service life of the device and preventing the water supply hose 103 from being bent, resulting in poor water flow.

[0053] The two nozzles 104 are symmetrically distributed along the extension direction of the clamp of the vise 4, and the connecting line between the two nozzles 104 intersects with the central axis of the drill bit component of the drilling machine 2, which can better flush the drill bit component and the drilling position to achieve uniform and rapid cooling. In addition, the drill cuttings sample can be flushed down to facilitate material collection.

[0054] Furthermore, as a preferred embodiment, the support portion 11 is configured as an electric push rod 111, a free end of which is hinged with a collar 112, the other end of which is connected to the inner wall of the protective tube cover 7, and the collar 112 is sleeved on the outside of the water supply hose 103, and the water supply hose 103 is moved by the telescopic transmission collar 112 at the output end of the electric push rod 111, so that the nozzle 104 can be flushed at the corresponding drilling position, and the surface temperature of the drill bit components and the drill cuttings samples can be fully cooled according to the actual processing conditions.

[0055] Further, as a preferred embodiment, the positioning convex ring 8 is buckled on the inner bottom end of the protective tube cover 7, and the inner wall of the positioning convex ring 8 is set as a wedge-shaped inclined surface, and the two sides of the positioning convex ring 8 are integrally provided with extension plates 14 for erecting and supporting on the top of the vise 4;

[0056] The adjusting part 9 includes a bidirectional screw rod 901, a slide groove 902 is provided at the bottom of the extension plate 14, and the bidirectional screw rod 901 is rotatably connected to the inner side of the bidirectional screw rod 901, and a twist handle 903 is fixedly connected to the end of the bidirectional screw rod 901. Two axially symmetrically distributed positioning blocks 904 are threadedly sleeved on the outer side of the bidirectional screw rod 901, and the outer sides of the two positioning blocks 904 of the same group are respectively abutted against the two side walls of the clamping opening of the bench vise 4.

[0057] Furthermore, as a preferred embodiment, the sample receiving bag 6 is configured as a foldable structure, which is processed as a prefabricated part, and the sample receiving bag 6 is made of aluminum foil, which is convenient for changing the shape and can maintain the shape after shaping. In addition, the sample receiving bag 6 made of this material is not easily damaged when used as a container to receive hot drill cuttings samples.

[0058] Further, as a preferred embodiment, the length of the unfolded sample receiving bag 6 matches the inner diameter of the bottom end of the protective tube cover 7, and the distance between the bottom surface of the vise 4 and the upper surface of the workbench 1 matches the height of the unfolded sample receiving bag 6.

[0059] Furthermore, as a preferred embodiment, the number of the water leakage holes 12 is set to be multiple, and the top end of the sample receiving bag 6 is set to be an arc-shaped gradually expanding structure to facilitate the entry of drill cuttings samples.

[0060] Furthermore, as a preferred embodiment, an observation hole is opened on the side wall of the protective tube cover 7, and an observation window 15 is arranged in the observation hole. The observation window 15 is made of organic glass to facilitate the observation of the drilling cuttings process.

[0061] The automatic low-carbon ferrochrome sample collection system also includes an intelligent control module, which includes a processor 16, a weighing plate 17, a first online temperature sensor 18 and a second online temperature sensor 19. The weighing plate 17 is placed on the workbench 1 and is used to sense the mass of the drill cuttings sample collected in the sample receiving bag 6. The first online temperature sensor 18 and the second online temperature sensor 19 are used to sense the surface temperature signals of the drill head component of the drilling machine 2 and the drill cuttings sample collected in the sample receiving bag 6, respectively, and feed the sensing signals back to the processor 16.

[0062] The input end of the processor 16 is electrically connected to an A / D converter and a D / A converter. The connection end of the processor 16 is also electrically connected to a display screen 20 for displaying sensed data. The weighing plate 17, the first online temperature sensor 18 and the second online temperature sensor 19 are all electrically connected to the A / D converter. The solenoid valve 106, the water pump 105, the electric push rod 111 and the drilling machine 2 are all electrically connected to the D / A converter. Before drilling cuttings, the bottom end of the drill bit component is contacted with the low-carbon ferrochrome sample block 5, and the contact point is used as the drilling point position. The electric push rod 111 is adjusted to make the jet water flow of the nozzle 104 shoot toward the drilling point position. When the temperature of the drill bit component rises to above the set value, the nozzle 104 is controlled to move upward. When the upper surface temperature of the drill cuttings sample rises to above the set value, the nozzle 104 is controlled to move downward.

[0063] The method for preparing a low-carbon ferrochrome sample using the automatic low-carbon ferrochrome sample collection system comprises the following steps:

[0064] Step 1, clamp the low-carbon ferrochrome sample block 5 at the jaws of the bench vise 4, unfold the folded sample receiving bag 6, and shape it so that its top end is in an arc-shaped and gradually expanded shape, and a plurality of water leakage holes 12 are pierced on the sample receiving bag 6;

[0065] Step 2, placing the shaped sample receiving bag 6 in the gap directly below the low-carbon ferrochrome sample block 5, so that the inner cavity area of ​​the sample receiving bag 6 can cover the falling range of the drill cuttings sample of the low-carbon ferrochrome sample block 5;

[0066] Step 3, place the positioning convex ring 8 on the vise 4, so that the positioning convex ring 8 is coaxially distributed with the drill head component of the drilling machine 2, and then rotate the two twist handles 903 to drive the two-way screw rod 901 to move the two groups of positioning blocks 904 outward, so that the positioning convex ring 8 is fixed by four-point support;

[0067] Step 4, sleeve the protective tube cover 7 onto the positioning convex ring 8, control the drilling machine 2 to work, and the drill head component thereof rotates and moves downward to drill cuttings from the low-carbon ferrochrome sample block 5. At the same time, a spray mechanism 10 is used to spray the surface of the drill head component and the low-carbon ferrochrome sample block 5, and the cuttings samples produced thereon fall into the sample receiving bag 6 for collection;

[0068] Step 5: Use the intelligent control module to supervise the collection process of the drill cuttings sample, monitor the surface temperature of the drill bit components and the drill cuttings sample during drilling, adjust the spraying position in time, spray water to cool the drill bit components and the drill cuttings sample, and the water falling into the sample receiving bag 6 flows out from the leaking hole 12 and is further discharged from the drainage groove 13;

[0069] Step 6: Use the weighing plate 17 to sense the mass of the drill cuttings sample collected in the sample receiving bag 6. When the set weight value is reached, control the drilling machine 2 and the water pump 105 to stop working, take out the sample receiving bag 6 containing the drill cuttings sample, and drain all the water for standby use;

[0070] Step 7: Place the drill cuttings sample collected in step 6 in an oven for drying, and finally obtain a low-carbon ferrochrome sample through a sample preparation and grinding device.

[0071] In addition, the automatic sample collection system provided by the present invention can also be used to collect other solid materials.

[0072] As an embodiment of the present application:

[0073] The size of the sample receiving bag 6 is set to 40mm×80mm×100mm, and the aperture of the leakage hole 12 is set to 1.5mm. During the low-carbon ferrochrome drilling process, the low-carbon ferrochrome sample block 5 selected as the low-carbon ferrochrome sample is placed 10mm below the bag opening of the sample receiving bag 6, in the middle of the bag opening; the inner diameter of the bottom end of the protective tube cover 7 is set to 100mm, the wall thickness is set to 1mm, and the height is set to 70mm. A 1mm steel plate is integrally provided on the upper part thereof, and the outer diameter of the upper steel plate is 100mm, with a 68mm hole in the middle thereof; the conveying main pipe 101 and the diversion pipe 102 are both 5mm stainless steel pipes.

[0074] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An automatic low-carbon ferrochrome sample collection system, comprising a workbench (1) and a drilling machine (2), wherein the workbench (1) is provided with two support plates (3), and the tops of the two support plates (3) are jointly provided with a bench clamp (4) for clamping a low-carbon ferrochrome sample block (5), and the drill head component of the drilling machine (2) is located directly above the low-carbon ferrochrome sample block (5) and can drill cuttings from the low-carbon ferrochrome sample block (5), characterized in that: A gap is reserved between the two support plates (3), and a sample receiving bag (6) is arranged in the gap for collecting drill cuttings samples; A protective sleeve cover (7) is arranged outside the drill head component of the drilling machine (2), and the inner diameter of the bottom end thereof is larger than the inner diameter of the top end; a positioning convex ring (8) is installed on the bench vise (4), and an adjusting portion (9) is arranged on the positioning convex ring (8) for installing the protective sleeve cover (7) and making the protective sleeve cover (7) and the drill head component of the drilling machine (2) coaxially distributed; The protective tube cover (7) is provided with a spray mechanism (10), which comprises a main delivery pipe (101), a diverter pipe (102) and a water supply hose (103). There are two water supply hoses (103). The main delivery pipe (101) is connected to the diverter pipe (102), and the two water supply hoses (103) are respectively connected to the two ends of the diverter pipe (102). A nozzle (104) is installed at the other end of the water supply hose (103). A support part (11) for connecting the water supply hose (103) is installed on the protective tube cover (7), and the support part (11) can adjust the direction of the water supply hose (103) and the nozzle (104). A water pump (105) is provided at the input end of the main delivery pipe (101), and a solenoid valve (106) is provided in the main delivery pipe (101) for delivering spray water and controlling the water flow rate. The outer wall of the sample receiving bag (6) is penetrated with a water leakage hole (12), and the upper surface of the workbench (1) is provided with a drainage groove (13).

2. The automatic low carbon ferrochrome sample collection system according to claim 1, characterized in that: Through holes are provided on both sides of the protective tube cover (7) and are distributed in an axisymmetric manner. The water supply hose (103) passes through the through holes, and a gasket (107) is provided between the through hole and the water supply hose (103). The gasket (107) is made of rubber material, and both ends of the gasket (107) extend out of the through holes. The two nozzles (104) are symmetrically distributed along the extension direction of the clamping opening of the vise (4), and the connecting line between the two nozzles (104) intersects with the central axis of the drill head component of the drilling machine (2).

3. The automatic low carbon ferrochrome sample collection system according to claim 1, characterized in that: The support part (11) is configured as an electric push rod (111), a free end of which is hingedly connected with a collar (112), and the other end is connected to the inner wall of the protective tube cover (7), and the collar (112) is sleeved on the outside of the water supply hose (103).

4. The automatic low carbon ferrochrome sample collection system according to claim 1, characterized in that: The positioning convex ring (8) is buckled on the inner bottom end of the protective tube cover (7), and the inner wall of the positioning convex ring (8) is set as a wedge-shaped inclined surface. Extension plates (14) are integrally arranged on both sides of the positioning convex ring (8) for erecting and supporting on the top of the vise (4); The adjusting portion (9) comprises a bidirectional screw rod (901), a slide groove (902) is provided at the bottom of the extension plate (14), and the bidirectional screw rod (901) is rotatably connected to the inner side of the bidirectional screw rod (901), a twist handle (903) is fixedly connected to the end of the bidirectional screw rod (901), and two axially symmetrically distributed positioning blocks (904) are threadedly sleeved on the outer side of the bidirectional screw rod (901), and the outer sides of the two positioning blocks (904) in the same group are respectively in contact with the two side walls of the clamping opening of the bench vise (4).

5. The automatic low carbon ferrochrome sample collection system according to claim 1, characterized in that: The sample receiving bag (6) is configured as a foldable structure, and the sample receiving bag (6) is made of aluminum foil.

6. The automatic low carbon ferrochrome sample collection system according to claim 5, characterized in that: The length of the unfolded sample receiving bag (6) matches the inner diameter of the bottom end of the protective tube cover (7), and the distance between the bottom surface of the bench clamp (4) and the upper surface of the workbench (1) matches the height of the unfolded sample receiving bag (6).

7. The automatic low carbon ferrochrome sample collection system according to claim 1, characterized in that: The number of the water leakage holes (12) is set to be multiple, and the top end of the sample receiving bag (6) is set to be an arc-shaped gradually expanding structure.

8. The automatic low carbon ferrochrome sample collection system according to claim 1, characterized in that: The side wall of the protective tube cover (7) is provided with an observation hole, an observation window (15) is arranged in the observation hole, and the observation window (15) is made of organic glass.

9. The automatic low carbon ferrochrome sample collection system according to claim 3, characterized in that: It also includes an intelligent control module, which includes a processor (16), a weighing plate (17), a first online temperature sensor (18) and a second online temperature sensor (19). The weighing plate (17) is placed on the workbench (1) and is used to sense the mass of the drill cuttings sample collected in the sample receiving bag (6). The first online temperature sensor (18) and the second online temperature sensor (19) are used to sense the surface temperature signals of the drill head component of the drilling machine (2) and the drill cuttings sample collected in the sample receiving bag (6), respectively, and feed the sensing signals back to the processor (16); The input end of the processor (16) is electrically connected to an A / D converter and a D / A converter. The connection end of the processor (16) is also electrically connected to a display screen (20) for displaying sensed data. The weighing plate (17), the first online temperature sensor (18) and the second online temperature sensor (19) are all electrically connected to the A / D converter. The solenoid valve (106), the water pump (105), the electric push rod (111) and the drilling machine (2) are all electrically connected to the D / A converter.

10. A method for preparing a low-carbon ferrochrome sample using the automatic low-carbon ferrochrome sample collection system according to any one of claims 1 to 9, characterized in that: The sample preparation steps include: Step 1, clamping a low-carbon ferrochrome sample block (5) at the jaws of a bench vise (4), unfolding a folded sample receiving bag (6), and shaping it so that its top end is in an arc-shaped, gradually expanding shape, and piercing a plurality of water leakage holes (12) on the sample receiving bag (6); Step 2, placing the shaped sample receiving bag (6) in the gap directly below the low-carbon ferrochrome sample block (5), so that the inner cavity area of ​​the sample receiving bag (6) can cover the falling range of the drill cuttings sample of the low-carbon ferrochrome sample block (5); Step 3, placing the positioning convex ring (8) on the vise (4) so ​​that the positioning convex ring (8) and the drill head component of the drilling machine (2) are coaxially distributed, and then rotating the two twist handles (903) to drive the bidirectional screw rod (901) to move the two groups of positioning blocks (904) outward, so that the positioning convex ring (8) is fixed by four-point support; Step 4: The protective tube cover (7) is sleeved on the positioning convex ring (8), and the drilling machine (2) is controlled to work, and the drill head component thereof rotates and moves downward to drill cuttings from the low-carbon ferrochrome sample block (5). At the same time, a spraying mechanism (10) is used to spray the surface of the drill head component and the low-carbon ferrochrome sample block (5), and the cuttings samples produced thereon fall into a sample receiving bag (6) for collection; Step 5: Use an intelligent control module to monitor the collection process of drill cuttings samples, monitor the surface temperature of the drill bit components and the drill cuttings samples during drilling, adjust the spraying position in time, spray water to cool the drill bit components and the drill cuttings samples, and the water falling into the sample receiving bag (6) flows out from the water leakage hole (12) and is further discharged from the drainage groove (13); Step 6: Use a weighing plate (17) to sense the mass of the drill cuttings sample collected in the sample receiving bag (6); when the set weight value is reached, control the drilling machine (2) and the water pump (105) to stop working, take out the sample receiving bag (6) containing the drill cuttings sample, and drain all the water for standby use; Step 7: Place the drill cuttings sample collected in step 6 in an oven for drying, and finally obtain a low-carbon ferrochrome sample through a sample preparation and grinding device.

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