CN220869390U - Coal mine deep hole airtight sampling device - Google Patents
Coal mine deep hole airtight sampling device Download PDFInfo
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- CN220869390U CN220869390U CN202322825553.8U CN202322825553U CN220869390U CN 220869390 U CN220869390 U CN 220869390U CN 202322825553 U CN202322825553 U CN 202322825553U CN 220869390 U CN220869390 U CN 220869390U
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- 238000005070 sampling Methods 0.000 title claims abstract description 99
- 239000003245 coal Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000003860 storage Methods 0.000 claims abstract description 62
- 230000001681 protective effect Effects 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 230000036346 tooth eruption Effects 0.000 claims description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 7
- 238000005553 drilling Methods 0.000 description 26
- 239000011435 rock Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model belongs to the technical field of coal mining, and particularly relates to a coal mine deep hole closed sampling device which comprises a drill bit, a switching valve, a core storage cylinder and a connecting part; the switching valve comprises a connecting cylinder, a spring, a valve seat and a spherical valve core, wherein the connecting cylinder is fixedly connected with the drill bit, two oblong holes are symmetrically formed in the connecting cylinder, and tooth grooves are formed in the edges of the two oblong holes; the valve seat is slidably arranged in the connecting cylinder and is fixedly connected with the core storage cylinder; the spherical valve core is rotatably arranged in the valve seat, two fluted discs are symmetrically fixed on the spherical valve core, are respectively positioned in the two oblong holes and are meshed with the corresponding tooth grooves; the spring is positioned between the drill bit and the valve seat; the connecting part, the core storage cylinder, the switch valve and the drill bit are provided with communicated water flow channels; the sampling device solves the problems of low sampling success rate, small sampling quantity and low sampling efficiency of the existing sampling device.
Description
Technical Field
The utility model belongs to the technical field of coal mining, and particularly relates to a coal mine deep hole airtight sampling device.
Background
The underground long-distance fixed-point airtight sampling technology is an airtight sampling technology which adopts directional long drilling to ascertain the fluctuation rule of coal beds in a sampling area, then makes a directional hole track and an arrangement design scheme of sampling points in holes, and drills holes according to requirements and accurately extracts coal samples at designated points in the holes. The long-distance fixed-point airtight sampling is carried out in the areas with thinner coal seams and larger fluctuation change of the directional hole track and the sampling points in the holes, the accurate control of the sampling points is realized, the airtight sampling device has to have higher tightness and pressure maintaining performance, and the control of the action sequence of the device has to be accurate and sensitive.
The Chinese patent with publication number CN107806341B discloses a coal mine deep hole fixed-point airtight sampling device, which adopts the structural design of an inner barrel, a middle barrel and an outer barrel, the coring drilling process is carried out, the coring outer barrel drives the coring bit to drill a coal sample, a coal core passes through the coring thin-wall bit and the ball valve, enters the coring inner barrel, stops drilling after reaching the coring length, and is filled with high-pressure water, the high-pressure water acts on the stop valve after passing through the check valve, when the water pressure generates thrust to cut off a pin, the stop valve and the coring middle barrel move forward to drive the ball valve switch and the ball valve to rotate so as to cut off a coring coal column, the coal sample and gas are sealed in the coring inner barrel, and after coring is finished, the coal core is connected with a downhole desorption instrument, so that on-site desorption can be carried out; the sampling device is difficult to judge whether the pin is sheared off or not when in use, the ball valve switch is opened or not, the sampling success rate is low, the storage space of the coring inner barrel is small, the primary sampling amount is small, and the sampling efficiency is low.
Disclosure of utility model
The utility model aims to provide a coal mine deep hole closed sampling device, which solves the problems of low sampling success rate, small sampling amount and low sampling efficiency of the existing sampling device.
In order to solve the technical problems, the utility model provides the following technical scheme:
a coal mine deep hole airtight sampling device comprises a drill bit, a switching valve, a core storage cylinder and a connecting part which are coaxially and sequentially arranged;
The switching valve comprises a connecting cylinder, a spring, a valve seat and a spherical valve core, wherein the connecting cylinder is fixedly connected with the drill bit, two oblong holes are symmetrically formed in the connecting cylinder, and tooth grooves are formed in the edges of the two oblong holes; the valve seat is slidably arranged in the connecting cylinder and is fixedly connected with the core storage cylinder; the spherical valve core is rotatably arranged in the valve seat, two fluted discs are symmetrically fixed on the spherical valve core, are respectively positioned in the two oblong holes and are meshed with the corresponding tooth grooves; the spring is positioned between the drill bit and the valve seat;
The connecting part is used for connecting the drill rod and is provided with a plurality of water inlet holes; a core storage area for storing samples is arranged in the core storage cylinder, and a plurality of water passing holes communicated with the water inlet holes are formed in the core storage cylinder; the connecting cylinder is provided with a plurality of guide holes, guide pipes are fixed in the guide holes, and the guide pipes are respectively movably arranged in the water passing holes of the core storage cylinder; the drill head is provided with a plurality of water outlet holes communicated with the guide holes; the water inlet, the water outlet, the guide pipe and the water outlet form a water flow channel.
Further, a sampling channel communicated with the core storage area of the core storage cylinder is arranged on the connecting part, and a sealing plug is detachably arranged at the opening of the sampling channel.
Further, the core storage cylinder comprises an outer cylinder, an inner cylinder is fixed in the outer cylinder, a core storage area is arranged inside the inner cylinder, a water passing gap is formed between the outer cylinder and the inner cylinder, a plurality of water passing holes are formed in one end, close to the switch valve, of the outer cylinder, an annular groove communicated with the water passing holes is formed in the inner wall of the outer cylinder, and the annular groove is communicated with the water passing gap.
Further, the connecting part comprises a mounting head, one end of the mounting head is in threaded connection with the inner cylinder of the core storage cylinder, and the other end of the mounting head is provided with a mounting cylinder for connecting a drill rod; the plurality of water inlet holes comprise a first water inlet hole and a second water inlet hole, the first water inlet hole is arranged on the axial direction of the mounting head, the second water inlet hole is arranged on the radial direction of the mounting head, and two ends of the second water inlet hole are respectively communicated with the water passing gap of the first water inlet hole and the water passing gap of the core storage barrel.
Further, the connecting part comprises a mounting head, a flange is arranged on the outer wall of the mounting head, and the flange is connected with the core storage cylinder; the sampling channel comprises an air hole and a sampling hole, the air hole is arranged on the central line of the mounting head, the sampling hole is arranged on the outer wall of the flange, the sealing plug is detachably arranged in the sampling hole, and two ends of the air hole are respectively communicated with the core storage area of the core storage barrel and the sampling hole.
Further, the switch valve further comprises an outer protective sleeve, the outer protective sleeve is sleeved on the connecting cylinder, one end of the outer protective sleeve is fixedly connected with the drill bit, and the other end of the outer protective sleeve is sleeved on the outer wall of the core storage cylinder in a sliding manner.
Further, the valve seat comprises a left valve seat and a right valve seat which are fixedly connected, the left valve seat and the right valve seat can be slidably arranged in the connecting cylinder, and the spherical valve core can be rotatably arranged in the left valve seat and the right valve seat; the ball core valve core is connected with the fluted disc through a fixing bolt, and the fixing bolt penetrates through the left valve seat, the right valve seat and the long round hole of the connecting cylinder; the spring is located between the drill bit and the left valve seat.
Further, a plurality of cutting teeth are arranged on the end face of one end of the drill bit, a connecting rod is arranged on the end face of the other end of the drill bit, an inner protection sleeve is sleeved outside the connecting rod, and a spring is sleeved on the inner protection sleeve.
The technical principle of the utility model is as follows:
In the initial state, the switch valve is in a closed state, the opening of the ball core valve core is propped against the inner wall of the connecting cylinder, and the connecting channel between the drill bit and the inner cylinder of the core storage cylinder is cut off; when sampling, connecting the drill rod on the mounting cylinder, conveying the device to a sampling point through the matching of the drilling machine and the drill rod, enabling the drill bit at the front end to prop against the rock wall of the sampling point, enabling the connecting cylinder to overcome the elastic force of the spring to slide towards the core storage cylinder by the reaction force of the rock wall, enabling the tooth slot on the connecting cylinder to drive the fluted disc to rotate, enabling the spherical valve core to rotate along with the fluted disc until the connecting cylinder props against the core storage cylinder, enabling the spring to be in a compression state, enabling the opening of the spherical valve core to be communicated with the drill bit and the core storage area of the core storage cylinder, and enabling the switch valve to be in an opening state; the drilling machine continuously advances to sample, and the sample gets into the core storage area from the drill bit through the opening part of ball-type case, and when the propulsion stroke of drilling machine is greater than the total length of this device, the sample is accomplished promptly, and drilling machine and drilling rod cooperation are with this device return, make the drill bit keep away from the rock wall, and the rock wall disappears to the reaction force of drill bit, and the spring resets, and the elasticity makes the connecting cylinder move to the direction of keeping away from a core storage section of thick bamboo, and tooth's socket on the connecting cylinder drives fluted disc reverse rotation and to initial position, and the ball core case resets thereupon, and the ooff valve closes.
Compared with the prior art, the utility model has the following beneficial technical effects:
1. The existing sampling device drives the high-pressure water to shear the pin to realize the opening and closing of the valve through the high-pressure pump, an operator cannot judge whether the pin is sheared or not, and whether the sampling is successful or not, and the sampling device has higher requirement on the sealing performance of the drill rod; the utility model realizes the opening and closing of the switch valve through the propelling pressure of the drilling machine and the reaction force of the rock wall to the sampling device, the switch valve can be automatically opened after the sampling device reaches the sampling point, the switch valve is automatically closed when the drilling machine withdraws the rod after the sampling is finished, the core storage cylinder is sealed, the sealing and pressure maintaining effects on the sample are better, the success rate of coal mine sampling and the measuring accuracy of the sample are effectively improved, the device has no special requirement on the drill rod, and the applicability of the sampling device is higher; because the sampling depth of the existing sampling device is limited by water pressure, the device is only suitable for removing samples with the hole depth smaller than 120M, and the device can be used for taking samples with the hole depth larger than 500M, thereby having an important role in mining work of coal mines.
2. The utility model has simple integral structure, low manufacturing cost and convenient and quick operation and use, and the core storage cylinder is arranged into an inner cylinder and outer cylinder structure, compared with the structure of the outer cylinder, the middle cylinder and the inner cylinder adopted by the existing sampling device, the cross-sectional area of the sample accommodating space of the sampling device is about 70 percent larger than that of the existing device, the sample amount of one-time sampling is increased, the sampling efficiency is effectively improved, and the coal mining flow is accelerated.
3. The sampling channel is arranged at the connecting part, after sampling is finished, a sealing plug of the sampling hole is opened to extract gas components in the sample stored in the core storage area, and after the gas is extracted, the mounting head is taken down to take out solids and liquid in the sample; the gas, liquid and solid separation operation of the sample is simple and quick, and the detection efficiency of the sample and the accuracy of the detection result are effectively improved.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a front view and a cross-sectional view in the direction A-A of the present utility model;
FIG. 3 is an exploded view of the switching valve of the present utility model;
FIG. 4 is a plan view of a cartridge of the present utility model, shown in section in the B-B direction;
Fig. 5 is a plan view of the connection part of the present utility model and a sectional view in the C-C direction thereof.
Detailed Description
The following is a further detailed description of the embodiments:
Reference numerals in the drawings of the specification include:
The drill bit 1, the cutting teeth 11, the water outlet 12, the connecting rod 13 and the inner protective sleeve 14;
The valve comprises a switch valve 2, a connecting cylinder 21, a guide hole 211, a slotted hole 212, a tooth slot 213, a ball valve core 22, an opening 221, a fluted disc 23, a left valve seat 24, a right valve seat 25, a spring 26, an outer protective sleeve 27 and a guide tube 28;
the core barrel 3, the inner barrel 31, the core storage area 311, the outer barrel 32, the water passing hole 321, the ring groove 322 and the water passing gap 33;
The device comprises a connecting part 4, a mounting head 41, an air hole 411, a first water inlet 412, a second water inlet 413, a mounting cylinder 42, a flange 43, a sampling hole 431 and a sealing plug 432.
Examples
As shown in fig. 1, the coal mine deep hole airtight sampling device comprises a drill bit 1, a switching valve 2, a core storage cylinder 3 and a connecting part 4 which are coaxially and sequentially arranged from left to right.
As shown in fig. 1 and 2, a plurality of cutting teeth 11 are integrally formed on the left end face of the drill bit 1, a connecting rod 13 is integrally formed on the right end face of the drill bit 1, an inner protection sleeve 14 is sleeved outside the connecting rod 13, the inner protection sleeve 14 is used for protecting the connecting rod 13, mechanical damage of the connecting rod 13 is reduced, and the service life of the drill bit 1 is prolonged.
As shown in fig. 1-3, the switch valve 2 comprises a connecting cylinder 21, a spring 26, a valve seat and a spherical valve core 22, wherein the left end of the connecting cylinder 21 is fixedly connected with the drill bit 1, two oblong holes 212 are symmetrically formed in two sides of the connecting cylinder 21, and tooth grooves 213 are formed in the edges of the two oblong holes 212; the valve seat is slidably arranged in the connecting cylinder 21 and comprises a left valve seat 24 and a right valve seat 25 which are fixedly connected, and the right end of the right valve seat 25 is fixedly connected with the left end of the core storage cylinder 3; the spherical valve core 22 is rotatably arranged in the left valve seat 24 and the right valve seat 25, an opening 221 penetrating through the spherical valve core 22 is formed in the central line of the spherical valve core 22, two fluted discs 23 are arranged on two sides of the spherical valve core 22 through fixing bolts, the fixing bolts penetrate through the left valve seat, the right valve seat and the oblong holes 212 of the connecting cylinder 21, the two fluted discs 23 are respectively positioned in the two oblong holes 212, and the two fluted discs 23 are respectively meshed with corresponding tooth grooves 213; the spring 26 is installed in the connecting cylinder 21, the spring 26 is sleeved outside the inner protective sleeve 14 of the drill bit 1, and two ends of the spring 26 can abut against the drill bit 1 and the left valve seat 24. The switch valve 2 further comprises an outer protective sleeve 27, the outer protective sleeve 27 is sleeved on the connecting cylinder 21, the left end of the outer protective sleeve 27 is fixedly connected with the drill bit 1, and the right end of the outer protective sleeve 27 is slidably sleeved on the outer wall of the core storage cylinder 3.
In the initial state, the switch valve 2 is in a closed state, the spring 26 is in an extended state, the opening 221 of the ball-shaped valve core 22 is in a vertical state, the opening 221 of the ball-shaped valve core is propped against the inner walls of the left valve seat 24 and the right valve seat 25, and the passage between the drill bit 1 and the core storage cylinder 3 is cut off; when the sampling device reaches a sampling point, pushing pressure is applied to the sampling device through a drilling machine and a drill rod, so that the drill bit 1 is propped against the rock wall of the sampling point, the reaction force of the rock wall enables the drill bit 1, the connecting cylinder 21 and the outer protective sleeve 27 to move rightwards against the elastic force of the spring 26, as the fluted disc 23 is meshed with the fluted groove 213 of the connecting cylinder 21, the fluted groove 213 drives the fluted disc 23 to rotate in the right moving process of the connecting cylinder 21, the ball core valve core rotates along with the fluted disc until the right end of the connecting cylinder 21 is propped against the left end of the core storage cylinder 3, the drill bit 1, the connecting cylinder 21 and the outer protective sleeve 27 stop rotating, at the moment, the opening 221 of the ball core 22 rotates to be in a horizontal state, the switch valve 2 is in an open state, the drill bit 1 is communicated with a channel of the core storage cylinder 3, and the spring 26 is in a compressed state; the drilling machine continuously advances and samples, the samples enter the core storage cylinder 3 from the drill bit 1 through the opening 221 of the ball valve core 22, when the advancing stroke of the drilling machine is larger than the total length of the device, namely, the sampling is completed, the drilling machine and the drill rod are matched to retract the device, so that the drill bit 1 is far away from the rock wall, the reaction force of the rock wall to the drill bit 1 disappears, the spring 26 is reset, the connecting cylinder 21 is moved leftwards by elasticity, the tooth groove 213 on the connecting cylinder 21 drives the fluted disc 23 to reversely rotate to an initial position, the ball valve core is reset along with the return, and the switching valve 2 is closed. The opening and closing of the switch valve 2 is directly controlled by the drilling machine, is not limited by water pressure, has high sampling success rate and deeper sampling depth, can obtain samples with the hole depth of more than 500M, and has great significance for mining sampling work of coal mines; and moreover, after the sampling is finished, the switch valve 2 is automatically closed, the sealing performance of the device is good, the pressure maintaining effect is good, and the detection accuracy of the sample can be improved.
As shown in fig. 2, the core barrel 3 includes an outer barrel 32, an inner barrel 31 is welded and fixed in the outer barrel 32, the left end of the outer barrel 32 is in interference fit with the right end of the right valve seat 25, the connecting portion 4 includes a mounting head 41, the left end of the mounting head 41 is in threaded connection with the inner barrel 31 of the core barrel 3, and a mounting barrel 42 for connecting a drill rod is welded at the right end of the mounting head 41. As shown in fig. 2 and 4, a plurality of first water inlet holes 412 are circumferentially formed in the right end surface of the mounting head 41, and a plurality of second water inlet holes 413 communicated with the first water inlet holes 412 are circumferentially formed in the outer wall of the mounting head 41; as shown in fig. 2 and 5, a water passing gap 33 communicated with the second water inlet 413 exists between the outer cylinder 32 and the inner cylinder 31 of the core barrel 3, a plurality of water passing holes 321 are circumferentially formed in the left end surface of the outer cylinder 32, a ring groove 322 is formed in the inner wall of the outer cylinder 32, and the ring groove 322 is communicated with the water passing holes 321 and the water passing gap 33; as shown in fig. 3, a plurality of guide holes 211 are circumferentially arranged on the connecting cylinder 21, a guide pipe 28 is fixed in each guide hole 211, and the right end of the guide pipe 28 extends out of the guide hole 211 and is slidably arranged in a water passing hole 321 of the outer cylinder 32; as shown in fig. 1, a plurality of water outlet holes 12 communicated with the guide holes 211 are circumferentially arranged on the drill bit 1; the first water inlet 412, the second water inlet 413, the water gap 33, the ring groove 322, the water outlet 321, the guide pipe 28 and the water outlet 12 form a water flow channel; in this embodiment, the number of the first water inlet holes 412 and the second water inlet holes 413 is 6, and the number of the water outlet holes 321, the guide holes 211, the guide pipes 28 and the water outlet holes 12 is 4.
Connecting a drill rod to the mounting cylinder 42, supplying water to the inside of the sampling device through the drill rod, and discharging water flow out of the drill bit 1 from the water flow channel; by arranging the guide pipe 28 which can move relative to the outer cylinder 32 on the connecting cylinder 21, not only can a flow path be provided for water flow, but also the guide pipe can play a guide role for the movement of the connecting cylinder 21 when the on-off valve 2 is opened and closed, so that the on-off process of the on-off valve 2 is smooth to operate, and the success rate of sampling is improved.
As shown in fig. 2 and 5, the inside of the inner cylinder 31 is a core region 311 for storing a sample; as shown in fig. 2 and 4, a flange 43 is integrally formed on the outer wall of the mounting head 41 of the connecting portion 4, and the flange 43 is fixedly connected with the outer cylinder 32 of the core barrel 3 by bolts; an air hole 411 is formed in the center line of the mounting head 41, a sampling hole 431 is formed in the outer wall of the flange 43, the left end of the air hole 411 is communicated with the core storage area 311 of the inner barrel 31, the right end of the air hole 411 is communicated with the sampling hole 431, the sampling hole 431 and the air hole 411 form a sampling channel, a sealing plug 432 is detachably mounted in the sampling hole 431, the sealing plug 432 is used for opening and closing the sampling channel, and the sealing plug 432 can be made of rubber materials with good wear resistance and corrosion resistance.
After the switch valve 2 is opened, the sample enters the core storage area 311 of the core storage cylinder 3 from the drill bit 1 and the switch valve 2, after the sampling is finished, the sample is sealed in the core storage area 311, after the drill rod is withdrawn, the sealing plug 432 is taken down, the gas component of the sample can be extracted through devices such as a syringe, the bolts on the flange 43 are taken down, and after the mounting head 41 is disassembled, the residual liquid and solid components of the sample can be taken out. The utility model can realize rapid separation of gas, liquid and solid components of the sample, has simple and rapid operation, and effectively improves the detection efficiency of the sample and the accuracy of the detection result; and the core storage barrel 3 adopts the structural design of the inner barrel and the outer barrel 32, the cross section area of the core storage area 311 of the inner barrel 31 is about 70% larger than that of the existing device, the sample amount of one-time sampling is greatly increased, the sampling efficiency is improved, and the coal mining speed is accelerated.
The specific implementation is as follows:
1. drilling the sampling hole into construction, and withdrawing the drill rod after the construction is finished;
2. the mounting cylinder 42 of the device is connected to the drill rod, and the switch valve 2 is closed at the moment;
3. Starting a drilling machine, simultaneously introducing water into a drill rod, discharging water flow out of the drill bit 1 through a water flow channel in the device, and conveying the device to a sampling point by the matching of the drilling machine and the drill rod, so as to increase the water supply and wash out sundries at the drill bit 1;
4. The drilling machine continuously advances and samples, the advancing pressure of the drilling machine enables the switch valve 2 to be opened, the samples enter a core storage area 311 in the device, when the advancing stroke of the drilling machine slightly exceeds the total length of the device, the drilling machine is kept rotating to retract the drilling machine, the advancing pressure disappears, the switch valve 2 is automatically closed, and the samples are stored in the core storage area 311 in a sealing mode;
5. The drilling machine is continuously rotated, the drilling machines are continuously retracted one by one until the device is recovered to the drilling machine, the device is taken down from the drill rod, the sealing plug 432 of the connecting part 4 is taken down, the gas component of the sample is extracted, the connecting part 4 is taken down again, the solid and liquid components in the sample are separated, and the sampled product can be analyzed under the condition of meeting the condition, so that the real condition of the sample at the sampling point is obtained.
The utility model has the advantages of simple integral structure, low manufacturing cost, convenient and quick operation during use, better sampling success rate and sampling efficiency than the existing sampling device, no special performance requirement on other devices such as a drill rod and the like, high applicability and contribution to the actual coal mining work.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. The utility model provides a airtight sampling device of colliery deep hole, includes drill bit, ooff valve, core storage section of thick bamboo, the connecting portion that coaxial setting gradually, its characterized in that:
The switching valve comprises a connecting cylinder, a spring, a valve seat and a spherical valve core, wherein the connecting cylinder is fixedly connected with the drill bit, two oblong holes are symmetrically formed in the connecting cylinder, and tooth grooves are formed in the edges of the two oblong holes; the valve seat is slidably arranged in the connecting cylinder and is fixedly connected with the core storage cylinder; the spherical valve core is rotatably arranged in the valve seat, two fluted discs are symmetrically fixed on the spherical valve core, are respectively positioned in the two oblong holes and are meshed with the corresponding tooth grooves; the spring is positioned between the drill bit and the valve seat;
The connecting part is used for connecting the drill rod and is provided with a plurality of water inlet holes; a core storage area for storing samples is arranged in the core storage cylinder, and a plurality of water passing holes communicated with the water inlet holes are formed in the core storage cylinder; the connecting cylinder is provided with a plurality of guide holes, guide pipes are fixed in the guide holes, and the guide pipes are respectively movably arranged in the water passing holes of the core storage cylinder; the drill head is provided with a plurality of water outlet holes communicated with the guide holes; the water inlet, the water outlet, the guide pipe and the water outlet form a water flow channel.
2. The coal mine deep hole closed sampling device according to claim 1, wherein: the connecting portion is provided with a sampling channel communicated with the core storage area of the core storage cylinder, and a sealing plug is detachably arranged at a sampling channel port.
3. The coal mine deep hole closed sampling device according to claim 1, wherein: the core storage cylinder comprises an outer cylinder, an inner cylinder is fixed in the outer cylinder, a core storage area is arranged inside the inner cylinder, a water passing gap is formed between the outer cylinder and the inner cylinder, a plurality of water passing holes are formed in one end, close to the switch valve, of the outer cylinder, an annular groove communicated with the water passing holes is formed in the inner wall of the outer cylinder, and the annular groove is communicated with the water passing gap.
4. A coal mine deep hole closed sampling device according to claim 3, wherein: the connecting part comprises a mounting head, one end of the mounting head is in threaded connection with the inner cylinder of the core storage cylinder, and the other end of the mounting head is provided with a mounting cylinder for connecting a drill rod; the plurality of water inlet holes comprise a first water inlet hole and a second water inlet hole, the first water inlet hole is arranged on the axial direction of the mounting head, the second water inlet hole is arranged on the radial direction of the mounting head, and two ends of the second water inlet hole are respectively communicated with the water passing gap of the first water inlet hole and the water passing gap of the core storage barrel.
5. The coal mine deep hole closed sampling device according to claim 2, wherein: the connecting part comprises a mounting head, a flange is arranged on the outer wall of the mounting head, and the flange is connected with the core storage cylinder; the sampling channel comprises an air hole and a sampling hole, the air hole is arranged on the central line of the mounting head, the sampling hole is arranged on the outer wall of the flange, the sealing plug is detachably arranged in the sampling hole, and two ends of the air hole are respectively communicated with the core storage area of the core storage barrel and the sampling hole.
6. The coal mine deep hole closed sampling device according to claim 1, wherein: the switch valve further comprises an outer protective sleeve, the outer protective sleeve is sleeved on the connecting cylinder, one end of the outer protective sleeve is fixedly connected with the drill bit, and the other end of the outer protective sleeve is slidably sleeved on the outer wall of the core storage cylinder.
7. The coal mine deep hole closed sampling device according to claim 1, wherein: the valve seat comprises a left valve seat and a right valve seat which are fixedly connected, the left valve seat and the right valve seat can be slidably arranged in the connecting cylinder, and the spherical valve core can be rotatably arranged in the left valve seat and the right valve seat; the ball core valve core is connected with the fluted disc through a fixing bolt, and the fixing bolt penetrates through the left valve seat, the right valve seat and the long round hole of the connecting cylinder; the spring is located between the drill bit and the left valve seat.
8. The coal mine deep hole closed sampling device according to claim 1, wherein: the drill bit is characterized in that a plurality of cutting teeth are arranged on one end face of the drill bit, a connecting rod is arranged on the other end face of the drill bit, an inner protection sleeve is sleeved outside the connecting rod, and a spring is sleeved on the inner protection sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322825553.8U CN220869390U (en) | 2023-10-20 | 2023-10-20 | Coal mine deep hole airtight sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322825553.8U CN220869390U (en) | 2023-10-20 | 2023-10-20 | Coal mine deep hole airtight sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220869390U true CN220869390U (en) | 2024-04-30 |
Family
ID=90814321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322825553.8U Active CN220869390U (en) | 2023-10-20 | 2023-10-20 | Coal mine deep hole airtight sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220869390U (en) |
-
2023
- 2023-10-20 CN CN202322825553.8U patent/CN220869390U/en active Active
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