CN202673137U - Piston type nail drift - Google Patents
Piston type nail drift Download PDFInfo
- Publication number
- CN202673137U CN202673137U CN 201220216326 CN201220216326U CN202673137U CN 202673137 U CN202673137 U CN 202673137U CN 201220216326 CN201220216326 CN 201220216326 CN 201220216326 U CN201220216326 U CN 201220216326U CN 202673137 U CN202673137 U CN 202673137U
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- piston
- puncher
- piston type
- drift
- rubber
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Abstract
The utility model relates to a piston type nail drift used for flushing wells in a foundation pit dewatering well completion technology. The piston type nail drift comprises a drill rod, a piston, a connecting head, a nail drift, and a valve, wherein the piston is arranged on the lower end of the drill rod and connected with the nail drift through the connecting head, a plurality of water holes are arranged on a wall of the nail drift, the piston comprises an upper portion of the piston and a lower portion of the piston, and the nail drift is arranged between the upper portion of the piston and the lower portion of the piston. In the piston type nail drift, a high speed water stream is formed by the piston lifting, pulling, and compressing gas, and the traditional practice of single depending on a vacuum pump pressing water is changed. Therefore, the piston type nail drift has the advantages of the nail drift and the piston flushing wells. Besides, the efficiency of flushing wells can be effectively raised, equipment and time are saved, and the piston type nail drift has a good social effect.
Description
Technical field
The utility model relates to novel well washing system, specifically, relates to a kind of piston type puncher of using for foundation pit dewatering well drilling technology well-flushing.
Background technology
Well-flushing is important step in the well drilling technology, and purpose is mud landwaste in the thorough clean-out opening, destroys borehole wall mud skin, extracts earth, flour sand in the aquifer out, so that dredging precipitation aquifer, to increase strainer periphery permeance property, it is reached should outlet effect.
Existing pumping and washing process comprises: piston type well-flushing, air compressor machine vibration well-flushing, well cleaning with perforator, liquid carbon dioxide well-flushing etc.The air compressor machine well-flushing is not thorough; Liquid carbon dioxide well-flushing high cost; The piston type well-flushing is pressure reduction well well-flushing mode commonly used, but the cost-effective rate is low, and can cause certain destruction to the foundation pit dewatering well borehole wall, has certain compaction to cause discharge reduction to silt and flour sand.
For guaranteeing the well-flushing quality and protecting simultaneously the borehole wall, in conjunction with puncher and piston type well-flushing advantage, improve silty soil and become well well-flushing quality, invention one cover foundation pit dewatering Cheng Jingzhong piston type punching well-washing device.
The utility model content
The purpose of this utility model is in conjunction with puncher and piston type well-flushing advantage, overcomes simultaneously the above-mentioned deficiency in the existing washing technology, and a kind of novel piston type puncher is provided, can Effective Raise well-flushing efficient, and saving equipment has huge economic benefit.
The purpose of this utility model is achieved in that
A kind of piston type puncher, comprise: drilling rod, piston, joint, puncher, valve, described piston is installed in the drilling rod lower end, link to each other with described puncher by joint, be distributed with some weep holes on the described punching wall, described piston comprises upper piston and lower piston, and described puncher is located between upper piston and the lower piston.
Wherein, described upper piston and lower piston are provided with respectively briquetting, compressing tablet, rubber and pad from top to bottom successively; Described upper piston and lower piston comprise respectively three rubber, and the pad corresponding with rubber quantity, and described rubber and pad interval arrange; The thickness of described pad is thinner than the thickness of described rubber.Preferably, the thickness of described rubber is approximately 10mm, and the thickness of described pad is approximately 6mm.
Described valve is located at the below of lower piston, is positioned at the bottom of whole piston type puncher.
Preferably, described weep hole is the taper hole, along the aperture of weep hole is from large to small to wall in the wall of described puncher.
When descent of piston is opened water pump to the strainer position, in well, form between two groups of pistons and utilize current in the high-speed compressed air injector well, the water that water pump pumps in the puncher has increased water flow pressure because two groups of piston spaces form vacuum, High-Pressure Water rushes at borehole wall mud skin by the weep hole of the descending reducing on the punching wall, and water flows back to the aquifer fast in the well.
Preferably, the external diameter of described puncher is slightly less than the internal diameter of foundation pit dewatering well construction middle filtrator, and near the internal diameter of strainer, then souring is best as far as possible.
This piston type puncher moves back and forth up and down at the strainer position, and effect is remarkable.Switch off the pump behind the piston stroking upward, valve is closed, and forms negative pressure in the well, and water flows in the well in the aquifer, and takes away borehole wall fine sand, earth.Repeatedly lifting piston washes away the borehole wall and can reach the well-flushing purpose.The utility model especially is suitable for the well-flushing of the foundation pit dewatering well on silty soil stratum.
The utility model is owing to having adopted technique scheme, compared with prior art has following beneficial effect: the utility model piston type puncher, lift Compressed Gas by piston, form high-velocity flow, changed in the past single traditional method by the vacuum pump setting-out, so that the utlity model has the advantage of puncher and piston type well-flushing, Effective Raise well-flushing efficient, saving equipment is saved time, and has huge economic benefit.
Description of drawings
By following embodiments of the invention and description taken together with the accompanying drawings, other advantage of the present invention and feature are shown, this embodiment provides with the form of example, but is not limited to this, wherein:
Fig. 1 is the structural representation of a preferred embodiment of the utility model piston type puncher;
Fig. 2 is the structural representation of piston portion embodiment illustrated in fig. 1;
Fig. 3 is puncher structural representation partly embodiment illustrated in fig. 1.
The specific embodiment
As shown in Figure 1, a kind of piston type puncher comprises: drilling rod 1, piston 2, joint 3, puncher 4, valve 5 and water pump 6, and piston 2 is installed in the drilling rod lower end, link to each other with puncher 4 by joint 3, in conjunction with shown in Figure 3, be distributed with some weep holes 41 on puncher 4 walls, weep hole 41 is the taper hole, along in the wall of puncher 4 to wall, the aperture of weep hole 41 from large to small, piston 2 comprises upper piston and lower piston, puncher 4 is located between upper piston and the lower piston.
In conjunction with shown in Figure 2, upper piston and lower piston are provided with respectively briquetting 21, compressing tablet 22, rubber 23 and pad 24 from top to bottom successively.In the present embodiment, upper piston and lower piston comprise respectively three rubber 23, and the pad 24 corresponding with rubber 23 quantity, rubber 23 arranges with pad 24 intervals, the thickness of rubber is approximately 10mm, and the thickness of pad 24 is approximately 6mm, is thinner than the thickness of rubber 23.Valve 5 is located at the below of lower piston, is positioned at the bottom of whole piston type puncher.
During use, the piston type puncher is put into dewatering well, valve 5 is opened automatically, puncher 4 is put into dewatering well structure strainer position, aim at the borehole wall, current enter puncher 4, the piston 2 descending high-speed compressed air that in well, form, utilize the pressure-air jet water course, High-Pressure Water enters puncher 4, rushes at borehole wall mud skin by the weep hole 41 on puncher 4 walls, preferably, the external diameter of puncher 4 is slightly less than the internal diameter of strainer, and near the internal diameter of strainer, then souring is best as far as possible.This piston type puncher moves back and forth up and down at the strainer position, and effect is remarkable.6 pistons 2 that switch off the pump are up, form negative pressure in valve 5 autoshutdowns, well, and aquifer Zhong Shui enters in the well, and takes away mud skin in the borehole wall gravel material.Repeatedly lift piston 2 alignment filter device positions and adopt the piston type puncher to wash away the borehole wall, 6 pistons 2 that switch off the pump are up, form negative pressure in the well, and aquifer Zhong Shui enters and takes away mud skin in the borehole wall gravel material in the well.Can reach the well-flushing purpose and so forth.
Claims (8)
1. piston type puncher, it is characterized in that, comprise: drilling rod, piston, joint, puncher, valve, described piston is installed in the drilling rod lower end, link to each other with described puncher by joint, be distributed with some weep holes on the described punching wall, described piston comprises upper piston and lower piston, and described puncher is located between upper piston and the lower piston.
2. piston type puncher as claimed in claim 1, it is characterized in that: described upper piston and lower piston are provided with respectively briquetting, compressing tablet, rubber and pad from top to bottom successively.
3. piston type puncher as claimed in claim 2, it is characterized in that: described upper piston and lower piston comprise respectively three rubber, and the pad corresponding with rubber quantity, described rubber and pad interval arrange.
4. piston type puncher as claimed in claim 3, it is characterized in that: the thickness of described pad is thinner than the thickness of described rubber.
5. piston type puncher as claimed in claim 3, it is characterized in that: the thickness of described rubber is 10mm, the thickness of described pad is 6mm.
6. piston type puncher as claimed in claim 1, it is characterized in that: described valve is located at the below of lower piston, is positioned at the bottom of whole piston type puncher.
7. such as the described piston type puncher of arbitrary claim among the claim 1-6, it is characterized in that: the external diameter of described puncher is slightly less than the internal diameter of foundation pit dewatering well construction middle filtrator.
8. such as the described piston type puncher of arbitrary claim among the claim 1-6, it is characterized in that: described weep hole is the taper hole, along the aperture of weep hole is from large to small to wall in the wall of described puncher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220216326 CN202673137U (en) | 2012-05-14 | 2012-05-14 | Piston type nail drift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220216326 CN202673137U (en) | 2012-05-14 | 2012-05-14 | Piston type nail drift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673137U true CN202673137U (en) | 2013-01-16 |
Family
ID=47494048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220216326 Expired - Lifetime CN202673137U (en) | 2012-05-14 | 2012-05-14 | Piston type nail drift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672916A (en) * | 2016-04-15 | 2016-06-15 | 中国地质大学（武汉） | Composite geothermal well washing tool and well washing technology method |
| CN109386254A (en) * | 2017-08-08 | 2019-02-26 | 魏志海 | Dry-hot-rock geothermal well high voltagehigh frequency vibrates well-washing device |
-
2012
- 2012-05-14 CN CN 201220216326 patent/CN202673137U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672916A (en) * | 2016-04-15 | 2016-06-15 | 中国地质大学（武汉） | Composite geothermal well washing tool and well washing technology method |
| CN109386254A (en) * | 2017-08-08 | 2019-02-26 | 魏志海 | Dry-hot-rock geothermal well high voltagehigh frequency vibrates well-washing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |