CN116641671A - Drilling system for determining fluorite deposit position - Google Patents

Abstract

The application provides a drilling system for determining the position of a fluorite deposit, which comprises a core barrel, wherein the core barrel comprises: the outer cylinder assembly comprises a cylindrical inner circumferential surface, an annular air chamber is arranged in the outer cylinder assembly, and a plurality of first air holes are formed in the inner side wall of the annular air chamber; the inner barrel is arranged in the outer barrel assembly, and a plurality of second ventilation holes which are arranged in one-to-one correspondence with the first ventilation holes are formed in the side wall of the inner barrel; the air chamber is communicated with the annular air chamber; the two ends of the inner peripheral surface are respectively provided with a first limiting surface and a second limiting surface facing the inner barrel, a telescopic actuating piece is arranged between the first limiting surface and the end surface of the inner barrel, an annular elastic piece is arranged between the second limiting surface and the end surface of the other end of the inner barrel, and through the arrangement mode, a gas layer can be formed between the core and the inner barrel when the core is taken out, so that the difficulty of taking the core out of the core barrel is reduced.

Description

Drilling system for determining fluorite deposit position

Technical Field

The present application relates generally to the field of deposit location exploration technology, and more particularly to a drilling system for determining the location of fluorite deposits.

Background

In determining the position of a deposit of fluorite, firstly, determining the approximate position of the fluorite as a target area according to the forming principle of the fluorite, then, setting a drilling position in the target area after determining the target area, then, drilling a core into the target area by using a drilling system, and determining the position of the fluorite deposit according to analysis of the core.

The core sampling system is adopted to sample the core, so that the means commonly used for prospecting geology and mineral positions are adopted to sample the core, but the core sampling tube is adopted to sample the core, due to high hardness of rock, the core is inconvenient to take out in the sampling tube after the core is sampled, the means commonly used at present are coring by adopting means such as water pressure flushing, knocking the sampling tube and the like, the means are time-consuming and labor-consuming, the coring effect is poor, particularly, the method for knocking the sampling tube is not only unfavorable for taking out the complete core, but also can knock the sampling tube to damage, so that how the core can be taken out from the sampling tube quickly becomes a difficult problem for constructors for a long time.

Disclosure of Invention

In view of the above, the present application provides a drilling system for determining the position of fluorite deposit, which is used for solving the problem that the core is difficult to separate from the coring pipe in the prior art.

The application provides a drilling system for determining the position of a fluorite deposit, comprising a core barrel, wherein the core barrel comprises:

the outer cylinder assembly comprises a cylindrical inner circumferential surface, an annular air chamber is arranged in the outer cylinder assembly along the axial direction, and a plurality of first ventilation holes are uniformly distributed on the inner side wall of the annular air chamber from one end to the other end;

the inner barrel is arranged in the outer barrel assembly, and a plurality of second ventilation holes which are arranged in one-to-one correspondence with the first ventilation holes are formed in the side wall of the inner barrel;

a gas chamber in communication with the annular gas chamber;

the two ends of the inner peripheral surface are respectively provided with a first limit surface and a second limit surface which face the inner cylinder, a telescopic actuating piece is arranged between the first limit surface and the end surface of the inner cylinder, an annular elastic piece is arranged between the second limit surface and the end surface of the other end of the inner cylinder, the telescopic actuating piece can shrink along the axial direction of the coring cylinder, and when the telescopic actuating piece is in the shortest state, the second air holes and the first air holes are all staggered, and the inner cylinder can be pushed to move in the extending process of the telescopic actuating piece so that the second air holes and the first air holes can be overlapped in a one-to-one correspondence manner.

Further, the outer tub assembly includes:

the first limiting surface is arranged at one end of the outer cylinder, and a step part is formed on the inner peripheral surface of the other end of the outer cylinder in an inward extending mode;

the middle cylinder is arranged in the outer cylinder, two ends of the middle cylinder are respectively abutted to the end face of the step part and the first limiting surface, an annular air chamber is formed between the outer peripheral surface of the middle cylinder and the inner peripheral surface of the outer cylinder, and the outer peripheral surfaces of the two ends of the annular air chamber of the middle cylinder are in airtight fit with the inner peripheral surface of the outer cylinder.

Further, an annular end plate is connected to the inner peripheral surface of the step portion in a threaded mode, and the second limiting surface is an end face of the annular end plate.

Further, the radius of the outer peripheral surface of the inner cylinder is not larger than the radius of the inner peripheral surface of the step portion, and the end surface of the inner cylinder, which is close to one end of the second limiting surface, is located between the end surface of the step portion, which faces the middle cylinder, and the second limiting surface.

Further, a rigid pushing plate is arranged in the inner cylinder in a sliding manner, and the inner cylinder is positioned at one side of the pushing plate, which is close to the first limiting surface, and is communicated with the air chamber.

Further, the end part of the outer cylinder is connected with a connecting joint through external threads, the first limiting surface is an end surface of the connecting joint, the telescopic actuating piece is of an annular columnar structure, and the air chamber is formed between the push plate and the first limiting surface.

Further, the telescopic actuating piece comprises a cylindrical piece, an annular mounting cavity which is coaxially arranged with the core barrel is formed in the end face, close to one end of the inner barrel, of the cylindrical piece, and a telescopic piece is arranged in the annular mounting cavity.

Further, along the axial direction of the core barrel, an air channel is formed in the side wall of the middle barrel, which is close to one end of the first limiting surface, on the inner peripheral surface of the middle barrel, a first air channel which is communicated with the air chamber and the air channel is formed in the side wall of the inner barrel, and a second air channel which is communicated with the annular air chamber is formed in the bottom of the air channel.

Further, the one end that the urceolus kept away from the attach fitting can dismantle and be connected with the core drill bit, the core drill bit is furnished with the rock core locking piece, annular the inner ring radius of elastic component, the internal diameter of annular end plate is all greater than the radius that the core drill bit was bored the rock core.

Further, the second ventilation hole comprises a first section close to the middle cylinder and a second section arranged on one side, far away from the middle cylinder, of the first section, and the radius of the second section is smaller than that of the first section.

Advantageous effects

The application provides a drilling system for determining the position of a fluorite deposit, comprising a core barrel, wherein the core barrel comprises: the outer cylinder assembly comprises a cylindrical inner circumferential surface, an annular air chamber is arranged in the outer cylinder assembly along the axial direction, and a plurality of first ventilation holes are uniformly distributed on the inner side wall of the annular air chamber from one end to the other end; the inner barrel is arranged in the outer barrel assembly, and a plurality of second ventilation holes which are arranged in one-to-one correspondence with the first ventilation holes are formed in the side wall of the inner barrel; a gas chamber in communication with the annular gas chamber; the utility model discloses a core taking device, including inner peripheral surface, inner tube, first bleeder vent, telescopic actuation piece, second bleeder vent, first bleeder vent, telescopic actuation piece, first bleeder vent, second bleeder vent, first bleeder vent, the second bleeder vent is provided with the inner tube is provided with respectively to the both ends of inner peripheral surface first spacing face and second spacing face of inner tube, first spacing face with be provided with telescopic actuation piece between the terminal surface of inner tube, the second spacing face with be provided with annular elastic component between the terminal surface of the other end of inner tube, telescopic actuation piece can produce and follow coring barrel axial direction shrink, and when telescopic actuation piece is in shortest state, the second bleeder vent with first bleeder vent is all crisscross to be set up, and can promote in telescopic actuation piece's the extension in order to make second bleeder vent with first bleeder vent can the coincidence one-to-one, through this kind of setting scheme, can reduce the degree of difficulty that will take out from coring barrel.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings.

FIG. 1 is a schematic diagram of a system for determining the location of fluorite deposits according to the present application.

FIG. 2 is a schematic diagram of the structure of a core barrel in a drilling system for determining the position of fluorite deposits according to the present application.

FIG. 3 is a schematic view of the enlarged partial structure of the core barrel at A in the drilling system of FIG. 2 for determining the location of fluorite deposits according to the present application.

FIG. 4 is a schematic view of a partially enlarged structure at B of a core barrel in the drilling system of FIG. 2 for locating fluorite deposits according to the present application.

FIG. 5 is a schematic view of the structure of a telescopic actuator in a drilling system for determining the position of fluorite deposits according to the present application.

FIG. 6 is a schematic view of a partially enlarged structure at C in the drilling system for determining the location of fluorite deposit according to the present application shown in FIG. 3.

Fig. 7 is a schematic top view of a valve plate in a drilling system for determining a fluorite deposit position according to the present application.

FIG. 8 is a schematic view of a partially enlarged structure at D in the drilling system for determining the location of fluorite deposit according to the present application shown in FIG. 3.

FIG. 9 is a schematic cross-sectional view of the upper end of the core barrel at F-F in the drilling system of FIG. 2 for determining the location of fluorite deposits according to the present application.

FIG. 10 is a schematic cross-sectional view of the lower end of the core barrel at F-F in the drilling system of FIG. 2 for determining the location of fluorite deposits according to the present application.

FIG. 11 is a schematic view of a partially enlarged structure at E in the drilling system for determining the location of fluorite deposit according to the present application shown in FIG. 10.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The present application provides a drilling system for determining the position of fluorite deposits, as a specific embodiment, referring to fig. 1 and 2, the system comprises a core barrel 1, the core barrel 1 comprises:

the outer cylinder assembly 1a comprises a cylindrical inner circumferential surface 1a-1, an annular air chamber 12 is arranged in the outer cylinder assembly 1a along the axial direction, and a plurality of first air holes 121 are uniformly distributed on the inner side wall of the annular air chamber from one end to the other end;

an inner cylinder 1b disposed in the outer cylinder assembly 1a, wherein a plurality of second ventilation holes 122 are disposed on the side wall of the inner cylinder 1b and in one-to-one correspondence with the first ventilation holes 121;

a gas chamber 15 communicating with the annular gas chamber 12;

the two ends of the inner peripheral surface 1a-1 are respectively provided with a first limiting surface 1a-2 and a second limiting surface 1a-3 which face the inner cylinder 1b, a telescopic actuating piece 13 is arranged between the first limiting surface 1a-2 and the end surface of the inner cylinder 1b, an annular elastic piece 14 is arranged between the second limiting surface 1a-3 and the end surface of the other end of the inner cylinder 1b, the telescopic actuating piece 13 can shrink along the axial direction of the coring cylinder, when the telescopic actuating piece is in the shortest state, the second air holes and the first air holes are all staggered, and the inner cylinder 1b can be pushed to move in the extension process of the telescopic actuating piece so that the second air holes and the first air holes can be overlapped in a one-to-one correspondence manner.

Specifically, referring to fig. 1 and 2, it should be noted that the drilling system of the present application is approximately consistent with the working principle of the drilling system in the prior art, when in use, firstly, the position of the core to be drilled is selected, then the core taking pipe 1 is driven to rotate around the axis to drill the ground by the driving rod 4, the core is drilled by the core taking pipe during drilling, then the core is taken out, after the core is taken out, the core can be obtained by taking the core out of the core pipe, and then the core is analyzed, so that the position of the mineral below the bottom layer can be obtained, and thus the position of the fluorite deposit is determined according to the position and distribution rule of the mineral, in particular, when the core is drilled by the core taking pipe 1 provided by the drilling system of the present application, the core is stored in the core pipe, in the prior art, because of the friction force between the core and the inner side wall of the core pipe causes inconvenient taking out, according to the core barrel provided by the application, when the core is taken out from the core barrel, the air chamber 15 is communicated with the first air supply device 52, the first air supply device 52 can supply air with preset pressure P into the air chamber 15, at the moment, the air flows into the annular chamber 12 through the air chamber 15 due to the staggered arrangement of the first air holes and the second air holes, the annular air chamber also has preset pressure P, the telescopic actuating piece 13 is controlled to stretch out and draw back according to a certain frequency, when the telescopic actuating piece 13 stretches out, the inner barrel 1b and the outer barrel assembly 1a can be pushed to slide relatively, the elastic piece 14 is compressed, the core moves along with the inner barrel 1b, the first air holes and the second air holes can be overlapped in the movement process of the inner barrel, at the moment, the air in the annular chamber can flow out through the first air holes and the second air holes, therefore, a layer of air layer can be formed between the inner peripheral surface of the inner barrel and the core, and the friction force between the core and the inner peripheral surface of the inner barrel 1b can be reduced through the air layer, so that the difficulty in taking out the core can be reduced, and particularly, in the actual operation process, axial thrust is applied to one end of the core, which is far away from the elastic piece 14, and the core is pushed out under the action of the thrust; in the process of shrinking the telescopic actuating piece 13, the elastic piece 14 provides resilience force for the inner barrel 1b, so that the inner barrel returns at a certain speed, and the core is driven to return together at the moment.

Further, as a specific embodiment, referring to fig. 2 to 4, the outer cylinder assembly has a specific structure as follows: the outer cylinder assembly 1a includes:

an outer cylinder 10, wherein one end 10a of the outer cylinder 10 is provided with the first limiting surface 1a-2, and the inner circumferential surface of the other end 10b of the outer cylinder is provided with a step part 102 extending inwards;

an intermediate cylinder 11 is disposed in the outer cylinder 10, and two ends of the intermediate cylinder are respectively abutted against the end face of the step portion 102 and the first limiting surface 1a-2, an annular air chamber 12 is formed between the outer peripheral surface of the intermediate cylinder 11 and the inner peripheral surface of the outer cylinder 10, and the outer peripheral surfaces of the two ends of the annular air chamber of the intermediate cylinder are in airtight fit with the inner peripheral surface of the outer cylinder.

Specifically, the outer cylinder 10 and the middle cylinder 11 are made of alloy steel, the outer cylinder 10 and the middle cylinder 11 are sleeved together, and a groove body is formed on the inner circumferential surface of the outer cylinder 10 or the outer circumferential surface of the middle cylinder, so that an annular chamber 12 can be formed between the outer cylinder and the middle cylinder after the outer cylinder and the inner cylinder are sleeved together, the annular chamber 12 is conveniently formed by the arrangement mode, and the telescopic actuating piece is also conveniently arranged.

Further, as a specific embodiment, referring to fig. 2 and 4, the annular end plate 1a-31 is screwed on the inner peripheral surface 1021 of the step portion 102, and the second limiting surface 1a-3 is an end surface of the annular end plate 1 a-31. In particular, by this arrangement, the annular end plates 1a-31 can be removed and installed, thereby facilitating the removal and installation of the inner cylinder 1b from the intermediate cylinder, as a specific embodiment, the elastic member 14 may be an elastic pad made of an elastic material, or may be a disc spring or the like.

Further, as a preferred embodiment, referring to fig. 2 and 4, the radius of the outer peripheral surface of the inner cylinder 10 is not greater than the radius of the inner peripheral surface 1021 of the step 102, and the end surface of the inner cylinder near one end of the second limiting surface 1a-3 is located between the end surface of the step facing the intermediate cylinder and the second limiting surface 1 a-3. Specifically, referring to fig. 4, when the telescopic actuating member is in a contracted state, the first ventilation holes and the second ventilation holes are staggered, at this time, the end face of the inner cylinder, which is close to one end of the second limiting surface 1a-3, is located between the end face of the step portion, which faces the middle cylinder, and the second limiting surface 1a-3, and by this arrangement, when the telescopic actuating member stretches out and contracts, the end face of the inner cylinder 1b, which is close to the second limiting surface, is always located between the inner circumferential surface ranges of the step portion, so that the situation that the end of the inner cylinder abuts against and is blocked with the end of the step portion can be avoided, and the reliability of the device is improved.

Example two

The application provides a drilling system for determining the position of a fluorite deposit, as a specific implementation mode, a rigid pushing plate 3 is slidably arranged in the inner cylinder 10, and the inner cylinder 10 is positioned on one side of the pushing plate 3, which is close to the first limiting surface 1a-2, and is communicated with the air chamber 15. Specifically, through this kind of setting scheme, through setting up push pedal 3, when the inside gas of letting in predetermined pressure P of air chamber 15, can promote the tip contact of push pedal 3 and the rock core in the inner tube 1b under the effect of atmospheric pressure, and provide thrust to the rock core, at this moment, produce the concertina movement of certain frequency through flexible actuating piece, thereby make first bleeder vent and second bleeder vent can switch between coincidence and crisscross state, thereby can form the air bed between the inner peripheral face of inner tube 1b and the outer peripheral face of rock core, reduce the frictional force between rock core and the inner tube through the air layer, the thrust of cooperation push pedal 3 to the rock core this moment, thereby can release the rock core, and when the state that contracts is to the state that stretches out at flexible actuating piece, can promote the inner tube motion to the extrusion of elastic component 14, and drive the rock core motion, at this moment, the action of rock core moves together and exerts thrust to the rock core at all the time under the effect of atmospheric pressure, at this moment, can form the air layer between rock core and rock core, then flexible actuating piece shrink, the inner tube drives under the elastic force of elastic component inner tube rebound, because the effect of the inner tube of the rock core is more easily receives the thrust of the rock core, can take out under the effect of the elastic impact, thus the moment can take out the rock core under the effect of the impact moment, the rock core is realized, the instantaneous.

Further, as a preferred embodiment, referring to fig. 1 to 3, the end of the outer cylinder 10 is connected with a connection joint 2 through external threads, the first limiting surface 1a-2 is an end surface of the connection joint, the telescopic actuating member 13 is in a ring-shaped columnar structure, and the air chamber 15 is formed between the push plate 3 and the first limiting surface 1 a-2. Specifically, the connector is in threaded connection with the outer cylinder 10 through threads and in airtight fit, a first air channel 151 communicated with the air chamber 15 is arranged on the connector 2, a first air supply device 52 is communicated with the first air channel, a first electromagnetic valve 55 is arranged on the first air supply device, the first air supply device can be an air supply device such as a high-pressure air pump and a high-pressure air storage tank, whether air with preset pressure P is supplied into the annular chamber 12 can be controlled through on-off of the first electromagnetic valve 55, and the structure is more reasonable through the integration of the air chamber 15 between the connector and the push plate.

Further, as a specific embodiment, referring to fig. 3 and 5, the telescopic actuator has a specific structure as follows: the telescopic actuating piece 13 comprises a tubular piece 131, the tubular piece 131 is close to an end face of one end of the inner barrel 10 and is provided with an annular mounting cavity 132 which is coaxially arranged with the coring barrel 1, the annular mounting cavity 132 is internally provided with a telescopic piece 133, the tubular piece can be made of a rigid material and mainly plays a role of supporting and connecting the middle barrel 11 and the connecting joint 2, the annular mounting cavity 132 is formed in the tubular piece 131 and is used for mounting the telescopic piece 133, the telescopic piece 133 can adopt an annular piezoelectric stack, the piezoelectric stack can deform when being electrified and retract when being powered off, the purpose of stretching can be achieved, the piezoelectric stack can generate output force reaching 4000-6000 newtons per square centimeter, enough thrust can be generated to effectively push the inner barrel 1b and compress the elastic piece 14, and meanwhile the elastic coefficient of the elastic piece 14 is set to be large enough, so that enough resilience force is generated when the telescopic piece 133 contracts, and the coring effect is ensured.

Further, in order to ensure that the annular air chamber 12 is effectively communicated with the air chamber 15, referring to fig. 3, as a specific embodiment, along the axial direction of the coring barrel 1, an air vent groove 110 is formed in the upper side wall of the inner peripheral surface of the middle barrel 11, which is close to one end of the first limiting surface 1a-2, a first air passage 1b-1 which is communicated with the air chamber 15 and the air vent groove 110 is formed in the side wall of the inner barrel 1b, a second air passage 111 which is communicated with the annular air chamber 12 is formed in the bottom of the air vent groove 110, specifically, the upper end of the air vent groove is communicated, and the arrangement direction of the air vent groove is arranged along the axial direction of the coring barrel.

Further, as a specific embodiment, referring to fig. 2 and fig. 4, the end of the outer barrel 10 away from the connecting joint 2 is detachably connected with a core drill 16, the core drill 16 is configured with a core locking member 161, the inner radius of the elastic member 14 and the inner diameters of the annular end plates 1a-31 are all larger than the radius of the core drilled by the core drill, it is to be noted that the core drill acts to drill so as to form a core, the core locking member mainly aims to lock the core when the core is taken out from the borehole so as to facilitate the core to be taken out from the borehole, the core drill and the core locking member 161 used in the application are all existing fittings in the prior art, and are not repeated in specific structures thereof, by setting the inner radius of the elastic member 14 and the inner diameters of the annular end plates 1a-31 to be larger than the radius of the core drilled by the core drill, the arrangement can reduce the contact friction between the elastic member and the annular end plates in the core drilling process, thereby improving the service life of the elastic member and the core and the annular end plates, and the core locking member 161 is needed to be removed from the core drill barrel 161, and the core taking system is needed to be prevented from being removed from the core barrel 161.

Further, referring to fig. 8, the second ventilation hole 122 includes a first section 122a near the middle cylinder, and a second section 122b disposed at a side of the first section 122a far from the middle cylinder, wherein a radius of the second section is smaller than a radius of the first section. Specifically, it can be understood that in the process of drilling the core, clear water is generally added into the drill hole, a large amount of ore scraps can be generated, the scraps and the clear water can possibly enter the second ventilation holes and accumulate in the second ventilation holes, and the second ventilation holes can be blocked, so that the phenomenon is reduced.

Example III

The present application provides a drilling system for determining the location of fluorite deposits, as a specific embodiment, the embodiment differs from the second embodiment in that: referring to fig. 3, 6 and 7, a partition plate 1b-2 is further arranged at one end of the inner cylinder 1b, which is close to the air chamber, the partition plate is positioned at one side of the push plate, which is close to the connecting joint 2, the partition plate is provided with an air guide cylinder 22 in a penetrating way, the outer circumferential surface of the air guide cylinder is in airtight fit with the partition plate, the connecting joint is in threaded connection with the upper end part of the air guide cylinder 22, the connecting joint 2 is provided with a second air passage 220 communicated with the air guide cylinder, a second air supply device 51 is communicated with the second air passage, a second electromagnetic valve 54 is arranged between the second air supply device and the second air passage, the partition plate is provided with an air passage 1b-20, the air passage is provided with a valve body, and the valve body is configured to close the air passage for a preset time when the air pressure between the partition plate and the push plate 3 is higher than the air pressure in the air chamber 15, and then open the air passage again; the second air supply device 51 can also adopt an air pump or a high-pressure air source, the air pressure supplied by the second air supply device is larger than the air pressure supplied by the first air supply device, in this way, when the core is taken out from the coring barrel, the first electromagnetic valve is opened, air with preset pressure P is supplied into the air chamber 15, the air flows through the partition plate through the air passage, thereby pushing the push plate to move to contact with the end part of the core, then the telescopic actuating piece is controlled to stretch out, the inner barrel and the core are pushed to synchronously move and compress the elastic piece 14, and the first air vent and the second air vent are communicated, so that an air layer is formed between the core and the inner barrel, then the telescopic actuating piece is controlled to rebound together under the elastic action of the elastic piece 14 from an extension state to a contraction state, at this moment, the second electromagnetic valve is controlled to be opened for preset time, so that the high-pressure air is supplied between the push plate and the partition plate through the second air supply device, the valve body is closed under the action of the high-pressure air, the air cannot flow out, thereby pushing the push plate under the action of the high-pressure air to generate instant force, thereby achieving a better coring effect, the valve body is opened after closing preset closing time, the push plate and the elastic piece 14 is fully rebounded, and the elastic rebound action can be fully extended again, and fully extended after the elastic piece is guaranteed; the second electromagnetic valve is controlled to be opened for a preset time and is matched with the valve body to work, so that the impact action on the push plate can be guaranteed, excessive high-pressure gas can be prevented from remaining between the partition plate and the push plate, and therefore the phenomenon that the core is ejected at a high speed due to excessive impact force when the core is to be completely taken out from the core tube can be avoided, and the safety is improved.

Further, as a specific embodiment, referring to fig. 6, the valve body has a specific structure including a piston chamber 1b-21 disposed on a valve plate and having an opening facing the push plate, an end plug 1b-24 disposed at a port of the piston chamber, a piston 1b-23 disposed in the piston chamber, a connecting rod 1b-25 disposed at a side of the piston close to the end plug, and a compression spring 1b-22 disposed at a side of the piston away from the end plug, wherein a blocking plate 1b-26 is disposed at a lower end portion of the connecting rod extending out of the end plug, the blocking plate is disposed corresponding to the air passage 1b-20, a first flow passage 1b-210 is disposed at an end of the piston chamber away from the end plug, a second flow passage 1b-231 is disposed on the piston, a first flow opening 1b-251 disposed at an inner portion of the piston chamber, a second air passage 1b-253 disposed at an outer portion of the piston chamber, and a communication passage 1b-252 communicating the second air passage and the first flow opening are disposed on an outer side of the connecting rod, and the valve body has a working principle of: under normal conditions, the piston is made to abut against the end plug under the elastic force of the compression spring 1b-22, at this time, the second air passage 1b-253 is located in the area between the partition plate and the push plate, and the closure plate 1b-23 is separated from the air passage 1b-20, at this time, the air passage 1b-20 is in an open state, wherein the flow area θ1 of the second air passage 1b-231 is smaller than the flow area θ2 of the first air passage 1b-251, θ1 is smaller than the flow area θ3 of the second air passage, θ1 is smaller than the flow area θ4 of the communication passage 1b-252, after high-pressure air is supplied between the partition plate and the push plate by the second air supply device 51, the air pressure between the push plate and the partition plate is made to be higher than the air pressure in the air chamber 15, and at the same time, air flows into the air chamber 15 through the air passage 1b-20, at this time, the air pressure of the area below the piston in the piston cavity is higher than the air pressure above the piston through the first flow opening 1b-251, the second air vent groove 1b-253 and the communication channel 1b-252, so that the piston is pushed to extrude the pressure spring 1b-22 to drive the blocking plate 1b-26 to block the air vent groove 1b-20, thereby closing the air vent groove 1b-20, at this time, the air flow flowing through the air vent groove 1b-20 is instantaneously cut off to form a water hammer effect, so that the air pressure between the baffle plate and the push plate has an instantaneous rising effect, at this time, the telescopic actuating piece contracts, the elastic piece pushes the inner barrel and the core to rebound, the impact force is instantaneously exerted on the push plate under the double effects of the rebound force and the high-pressure air between the baffle plate and the push plate, and the piston move along with the piston, so that the end plug partially or completely blocks the second air vent groove 1b-253, the high-pressure gas flowing into the piston cavity through the second vent grooves 1b-253 is lower than the gas flowing into the upper side of the piston cavity through the second flow channels 1b-231, so that the gas pressure difference at two sides of the piston is reduced, the gas channel 1b-20 is opened by the blocking plate in a rebound mode under the action of the thrust of the pressure spring, the cavity 15 is communicated with the area below the partition plate through the communication of the gas channel, the gas pressure is balanced, the elastic piece 14 is convenient for pushing the inner cylinder to rebound completely, the gas channel is evenly arranged at intervals around the piston cavity as a specific implementation mode, the blocking plate comprises a threaded sleeve 1b-263, an annular plate 1b-261 and connecting ribs 1b-262 which are in threaded connection with the connecting rod, and the blocking plate can not shade the piston cavity and ensure the sensitivity of the valve body through the arrangement mode.

Further, as a further improvement, in order to ensure that the inner tube has sufficient resilience force at the same time as the second air supply device 51 supplies high-pressure air between the partition plate and the push plate, and to enhance the coring effect, referring to fig. 2, 9 to 11, a third air passage 1b-20 is provided on the inner wall of the inner tube 1b between the partition plate and the push plate, a third air passage 1b-2 communicating with the third air passage 1b-20 is provided on the outer wall of the inner tube in the axial direction, an annular groove coaxially provided with the coring tube is cut off from a region where the end face of the end of the intermediate tube 11 contacting the stepped portion 102 intersects the inner peripheral face, a second annular chamber 11a is formed around the annular groove and the outer peripheral face of the inner tube, the end face of the stepped portion 102, an annular plate 1b-3 extending into the second annular chamber 11a is provided on the outer peripheral face of the inner tube, an annular piston 1b-4 is arranged at one side of the annular plate, which is close to the coring bit, in the second annular cavity, a second annular elastic piece 141 is arranged between the annular piston and the annular plate, a strip-shaped air vent 1b-22 communicated with one end of the second annular cavity 11a, which is close to the coring bit, is arranged on the outer peripheral surface of the inner cylinder, a through hole 1b-21 communicated with a third air passage 1b-2 and the strip-shaped air vent 1b-22 is arranged in the side wall of the inner cylinder, the third air passage 1b-2 is arranged at a position different from the second air vent, the second annular air chamber 11a is communicated with the annular air chamber 12 through the second air passage 11a-1, and referring to FIG. 11, a schematic diagram of the state of the annular plate in the second annular air chamber in a contracted state of the telescopic actuating piece 13 is provided, at the moment, the inner peripheral surface of the annular piston 1b-4 shields the strip-shaped air vent 1b-22 partially, the strip-shaped air vent 1b-22 is not communicated with the area of the second annular chamber 11a above the annular piston, when the telescopic actuating piece 13 stretches to push the inner cylinder to slide relatively to the middle building air vent 11, the annular plate 1b-3 presses the second annular elastic piece 141, high-pressure air is simultaneously supplied through the second air supply device 51 when the telescopic actuating piece 13 contracts, at the moment, the area of the second annular air chamber 11a below the annular piston 1b-4 is communicated with the area between the partition plate and the push plate through the communication effect of the third air passage 1b-2 and the through hole 1b-21, the area of the second annular air chamber 11a above the annular piston 1b-4 is communicated with the annular air chamber 12, so that air pressure difference is generated at two sides of the annular piston, the acting force of upward impact is exerted on the annular piston plate under the action of the air pressure difference, and the upward acting force is exerted on the inner cylinder through the annular plate 1b-3, so that the inner cylinder is assisted to rebound, and the second annular elastic piece 141 can be made of elastic materials or a disc spring is adopted as a specific embodiment.

Further, as a specific embodiment, referring to fig. 1, the first electromagnetic valve and the second electromagnetic valve are both connected to the control device 53, the control device is connected to the telescopic actuating member, so that the control device obtains the time points of extension and retraction of the telescopic actuating member, and controls the opening and closing time of the first electromagnetic valve and the second electromagnetic valve, as a specific embodiment, the pressure of the gas supplied by the first gas supply device is P, the pressure of the gas supplied by the second gas supply device is P1, the area of the annular cross section of the annular piston is S1, the cross section of the inner circumferential surface of the inner cylinder is S2, the closing time T of the valve body is in the range of 0.2 seconds to 0.5 seconds, the adjustment coefficient γ is in the range of 0.57 to 0.87, and the flow area θ6 of the through hole 1b-21 is smaller than the flow area of the third gas passage 1b-2, and the following relation is given: p1/p=1+ { γ [ (S1/θ6) +s1 ]/S2 ×t ^1/2 }。

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. A drilling system for determining the position of fluorite deposits, comprising a core barrel (1), characterized in that said core barrel (1) comprises:

the outer cylinder assembly (1 a) comprises a cylindrical inner circumferential surface (1 a-1), an annular air chamber (12) is arranged in the outer cylinder assembly (1 a) along the axial direction, and a plurality of first ventilation holes (121) are uniformly distributed on the inner side wall of the annular air chamber from one end to the other end;

an inner cylinder (1 b) arranged in the outer cylinder assembly (1 a), wherein a plurality of second ventilation holes (122) which are arranged in one-to-one correspondence with the first ventilation holes (121) are formed in the side wall of the inner cylinder (1 b);

a gas chamber (15) in communication with the annular gas chamber (12);

the two ends of the inner peripheral surface (1 a-1) are respectively provided with a first limiting surface (1 a-2) and a second limiting surface (1 a-3) which face the inner cylinder (1 b), a telescopic actuating piece (13) is arranged between the first limiting surface (1 a-2) and the end surface of the inner cylinder (1 b), an annular elastic piece (14) is arranged between the second limiting surface (1 a-3) and the end surface of the other end of the inner cylinder (1 b), the telescopic actuating piece (13) can shrink along the axial direction of the coring cylinder, when the telescopic actuating piece is in the shortest state, the second air holes and the first air holes are all staggered, and in the extension process of the telescopic actuating piece, the inner cylinder (1 b) can be pushed to move so that the second air holes and the first air holes can be overlapped in a one-to-one correspondence.

2. Drilling system for determining the position of fluorite deposits according to claim 1, characterized in that said outer cylinder assembly (1 a) comprises:

an outer tube (10), wherein one end (10 a) of the outer tube (10) is provided with the first limit surface (1 a-2), and the inner peripheral surface of the other end (10 b) of the outer tube is inwards extended to form a step part (102);

the middle cylinder (11) is arranged in the outer cylinder (10), two ends of the middle cylinder are respectively abutted against the end face of the step part (102) and the first limiting surface (1 a-2), an annular air chamber (12) is formed between the outer peripheral surface of the middle cylinder (11) and the inner peripheral surface of the outer cylinder (10), and the outer peripheral surfaces of the two ends of the annular air chamber of the middle cylinder are in airtight fit with the inner peripheral surface of the outer cylinder.

3. A drilling system for determining the position of fluorite deposit according to claim 2, characterized in that an annular end plate (1 a-31) is screwed onto the inner peripheral surface (1021) of the stepped portion (102), and the second limit surface (1 a-3) is an end surface of the annular end plate (1 a-31).

4. A fluorite deposit positioning drilling system according to claim 2 or 3, characterized in that the radius of the outer peripheral surface of the inner cylinder (10) is not greater than the radius of the inner peripheral surface (1021) of the stepped portion (102), and the end surface of the inner cylinder near one end of the second limiting surface (1 a-3) is located between the end surface of the stepped portion facing the intermediate cylinder and the second limiting surface (1 a-3).

5. Drilling system for determining the position of fluorite deposits according to claim 4 characterized in that a rigid push plate (3) is slidingly arranged in said inner cylinder (10), said inner cylinder (10) being in communication with said air chamber (15) on the side of said push plate (3) close to said first limit surface (1 a-2).

6. The drilling system for determining the position of fluorite deposit according to claim 4, characterized in that the end of the outer cylinder (10) is connected with a connecting joint (2) through external threads, the first limiting surface (1 a-2) is an end surface of the connecting joint, the telescopic actuating member (13) is of a circular columnar structure, and the air chamber is formed between the push plate (3) and the first limiting surface (1 a-2).

7. A system for determining the position of fluorite deposit according to claim 6, characterized in that said telescopic actuating element (13) comprises a tubular element (131), an annular mounting cavity (132) coaxially arranged with said core barrel (1) being provided on an end face of said tubular element (131) adjacent to said inner barrel (10), a telescopic element (133) being provided in said annular mounting cavity (132).

8. A system for determining the position of fluorite deposit according to claim 7, characterized in that, in the axial direction of the core barrel (1), an air vent groove (110) is provided on the inner peripheral surface upper side wall of the intermediate barrel (11) near one end of the first limiting surface (1 a-2), a first air passage (1 b-1) communicating the air chamber (15) with the air vent groove (110) is provided on the side wall of the inner barrel (1 b), and a second air passage (111) communicating with the annular air chamber (12) is provided at the bottom of the air vent groove (110).

9. A drilling system for determining the position of fluorite deposits according to claim 8, characterized in that the end of the outer barrel (10) remote from the connecting joint (2) is detachably connected with a coring bit (16), the coring bit (16) being provided with a core locking member (161), the inner ring radius of the elastic member (14) in the shape of a ring, the inner diameter of the annular end plates (1 a-31) being larger than the radius of the core drilled by the coring bit.

10. The fluorite deposit positioning drilling system according to any one of claims 1 to 9, characterized in that said second ventilation holes (122) comprise a first section (122 a) close to said intermediate barrel, a second section (122 b) provided on the side of said first section (122 a) remote from said intermediate barrel, said second section having a radius smaller than the radius of said first section.