CN202247918U - Downcast well pipe - Google Patents

Downcast well pipe Download PDF

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Publication number
CN202247918U
CN202247918U CN 201120283832 CN201120283832U CN202247918U CN 202247918 U CN202247918 U CN 202247918U CN 201120283832 CN201120283832 CN 201120283832 CN 201120283832 U CN201120283832 U CN 201120283832U CN 202247918 U CN202247918 U CN 202247918U
Authority
CN
China
Prior art keywords
pipe
precipitation well
outer tube
interior pipe
downcast
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201120283832
Other languages
Chinese (zh)
Inventor
陈登玉
曹寅
李树敬
赫德亮
李涛
邹彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway 14th Bureau Group Co Ltd
Fourth Engineering Co Ltd of China Railway 14th Bureau Co Ltd
Original Assignee
China Railway 14th Bureau Group Co Ltd
Fourth Engineering Co Ltd of China Railway 14th Bureau Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway 14th Bureau Group Co Ltd, Fourth Engineering Co Ltd of China Railway 14th Bureau Co Ltd filed Critical China Railway 14th Bureau Group Co Ltd
Priority to CN 201120283832 priority Critical patent/CN202247918U/en
Application granted granted Critical
Publication of CN202247918U publication Critical patent/CN202247918U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model provides a downcast well pipe which comprises an inner pipe made of a PVC (Poly Vinyl Chloride) pipe, a steel wire mesh is arranged on the periphery of the inner pipe and at a water inlet, an outer pipe is installed outside the inner pipe, the steel wire mesh is arranged between the inner pipe and the outer pipe, and the outer pipe is a sand-free pipe. The steel wire mesh between the inner pipe and the outer pipe reinforces the entire device, the impact strength of the device is increased, the swinging of a suction pipe can be prevented from damaging the downcast pipe, and the situation of blocking the downcast pipe and a suction pump by sludge is avoided. The downcast well pipe also has the advantages of simple and compact structure, low manufacturing cost and easiness and convenience for use.

Description

The precipitation well casing
Technical field
The utility model relates to a kind of underground construction precipitation device, exactly is a kind of precipitation well casing.
Background technology
In the building foundation pit work progress, because foundation ditch constantly extends below to ground, the underground water regurgitate in aquifer is gone into foundation ditch, causes water burst, gathers around accidents such as sand or prominent gushes.In order to prevent the generation of accident, often foundation ditch is carried out the precipitation operation, promptly in foundation ditch, arrange a plurality of precipitation well dewatering.Traditional job practices is to adopt no sand drain pipe as precipitation well shaft cladding, through the water permeability filtrate of filling between the borehole wall outside and the soil body water body is filtered.Because the intensity of no sand drain pipe is very low, in carrying out dewatering construction, the drinking-water pipe of suction pump stretches in the precipitation well casing; Drinking-water pipe is constantly swung, and very easily breaks the precipitation well casing, thereby makes earth get into the precipitation well; Precipitation well and suction pump are silted up; Cause precipitation well and suction pump to scrap, have to set again the precipitation well, bring great trouble to construction.
The utility model content
The purpose of the utility model provides a kind of precipitation well casing and puts, and can improve precipitation well casing impact resistance, prevents that the precipitation well casing is destroyed, and has avoided earth to get into the phenomenon that the precipitation well blocks suction pump.
The utility model is for realizing above-mentioned purpose, and realize through following technical scheme: comprise the interior pipe of being processed by pvc pipe, interior pipe periphery and water inlet are provided with gauze wire cloth, and interior pipe is installed outer tube outward, and gauze wire cloth is between interior pipe and outer tube, and outer tube adopts no sandpipe.
In order further to realize the purpose of the utility model, can also adopt following technical scheme: evenly offer several permeable holes on the tube wall of pipe in described.Described outer tube end opening is provided with shrouding, between shrouding and the interior water inlet tube mouth packing layer is set.
The advantage of the utility model is: the gauze wire cloth between interior pipe and the outer tube is reinforced whole device, and the impact strength of device increases, and can prevent the destruction of drinking-water pipe swing to downcomer, avoids mud to block the situation of precipitation well and suction pump.The utility model also has compactness simple for structure, advantage cheap for manufacturing cost and easy to use.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Reference numeral: pipe 4 permeable holes 5 packing layers 6 shroudings in 1 outer tube, 2 gauze wire cloths 3.
The specific embodiment
The described a kind of precipitation well casing of the utility model, as shown in Figure 1, comprise the interior pipe of processing by pvc pipe 3, interior pipe 3 peripheries and water inlet are provided with gauze wire cloth 2, the interior pipe 3 outer outer tubes 1 of installing, gauze wire cloth 2 is between interior pipe 3 and outer tube 1, and outer tube 1 adopts no sandpipe.Gauze wire cloth 2 can make precipitation well casing bulk strength increase, and can effectively prevent the bump that drinking-water pipe swing outer tube causes.Can avoid because downcomer is destroyed, mud silts manifesting of precipitation well and suction pump up, has prolonged the life-span of precipitation well casing, has guaranteed the progress of dewatering construction.
In order to increase permeable amount, as shown in Figure 1, evenly offer several permeable holes 4 on the tube wall of described interior pipe 3.Except can be the bottom is permeable, sidewall can be simultaneously permeable, increased permeable amount, improved the efficient of precipitation operation.
Described outer tube 1 end opening is provided with shrouding 6, and is as shown in Figure 1, between shrouding 6 and interior pipe 3 water inlets packing layer 5 is set.During the precipitation well casing, at first shrouding 6 is placed the precipitation bottom during installation, then outer tube 1 is put into the precipitation well, placement packing layer 5 to outer tube 1 in is put into outer tube with the interior pipe of winding steel wire net 2 at last again.Shrouding 6 can be played a supporting role to whole precipitation well casing, prevents that the precipitation well casing is absorbed in mud and sinks.Packing layer 5 can prevent that mud from getting into the precipitation well casing, guarantees the normal operation of suction pump to underground water filtration.
The technical scheme of the utility model is not restricted in the scope of the described embodiment of the utility model.The utility model not technology contents of detailed description is known technology.

Claims (3)

1. precipitation well casing; It is characterized in that: comprise the interior pipe of being processed by pvc pipe (3), interior pipe (3) periphery and water inlet are provided with gauze wire cloth (2), the outer outer tube (1) of installing of interior pipe (3); Gauze wire cloth (2) is between interior pipe (3) and outer tube (1), and outer tube (1) adopts no sandpipe.
2. precipitation well casing according to claim 1 is characterized in that: evenly offer several permeable holes (4) on the tube wall of pipe (3) in described.
3. precipitation well casing according to claim 1 is characterized in that: described outer tube (1) end opening is provided with shrouding (6), between shrouding (6) and interior pipe (3) water inlet packing layer (5) is set.
CN 201120283832 2011-08-05 2011-08-05 Downcast well pipe Expired - Lifetime CN202247918U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120283832 CN202247918U (en) 2011-08-05 2011-08-05 Downcast well pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120283832 CN202247918U (en) 2011-08-05 2011-08-05 Downcast well pipe

Publications (1)

Publication Number Publication Date
CN202247918U true CN202247918U (en) 2012-05-30

Family

ID=46109180

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120283832 Expired - Lifetime CN202247918U (en) 2011-08-05 2011-08-05 Downcast well pipe

Country Status (1)

Country Link
CN (1) CN202247918U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103882879A (en) * 2014-03-28 2014-06-25 中建城市建设发展有限公司 Device and method for detecting depth of foundation pit dewatering
CN103912002A (en) * 2014-03-24 2014-07-09 昆山帝滤源塑管有限公司 UPVC (ultra-rigid polyvinyl chloride) composite downcast pipe
CN106193078A (en) * 2016-09-22 2016-12-07 中建八局第四建设有限公司 A kind of stagewise sealing downcomer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103912002A (en) * 2014-03-24 2014-07-09 昆山帝滤源塑管有限公司 UPVC (ultra-rigid polyvinyl chloride) composite downcast pipe
CN103882879A (en) * 2014-03-28 2014-06-25 中建城市建设发展有限公司 Device and method for detecting depth of foundation pit dewatering
CN106193078A (en) * 2016-09-22 2016-12-07 中建八局第四建设有限公司 A kind of stagewise sealing downcomer

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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

Granted publication date: 20120530

CX01 Expiry of patent term