CN208395844U - Piston type pumping system suitable for soft clay area - Google Patents

Abstract

The utility model provides a kind of piston type pumping system suitable for soft clay area, including a well casing, a piston component, a drinking-water pipe, a well lid, a filter material layer and a lifting device, the even tube wall of well casing is laid with multiple limbers and is set in a foundation pit, filter material layer is filled between well casing and foundation pit walls, and the outer diameter of piston component is matched with the internal diameter of well casing to be merged and can be set in well casing along well casing axially reciprocating；The first end of drinking-water pipe is provided with one first valve and is connected or is isolated by the space between the first valve and the bottom of well casing and piston component bottom, and the second end of drinking-water pipe is connected with free surrounding space；Well lid sealing cover is set between well casing mouth and piston component, and lifting device and piston component are sequentially connected.A kind of piston type pumping system suitable for soft clay area of the utility model, can not only guarantee the vacuum degree of dewatering well and efficiency of drawing water, and also eliminate the unfavorable factor that immersible pump is difficult to overhaul, at low cost, effect of drawing water is good.

Description

Piston type pumping system suitable for soft clay area

Technical field

The utility model relates to deep-well pumping technical fields more particularly to a kind of piston type suitable for soft clay area to draw water System.

Background technique

With the rise of urban skyscraper and the development of underground railway, a large amount of deep-foundation pit engineering is produced.If Constructing, regional level of ground water is higher, and excavation of foundation pit will be related to influence of the underground water to foundation pit construction, to guarantee foundation pit supporting construction The safety and stability of system, at the same guarantee base pit engineering excavation construction go on smoothly and underground main structure construction it is normal into Row, need to take the measure of lowering of watertable.

Weak soil, especially silt soil strata, water content is higher, and permeability is smaller, traditional for level of ground water is effectively reduced Deep foundation pit precipitation equipment includes vacuum pump, immersible pump and deep-well chimney filter etc., and usual a well configures an immersible pump, and immersible pump is normal Well water face is placed in hereinafter, drawing water with the increase of well point depth becomes more and more difficult.Technology equipment investment early period is more, fortune It either installs, check or safeguards during row, cost of labor is very high, and efficiency of drawing water is unsatisfactory, and equipment uses Service life is short.

Summary of the invention

In view of the deficiency of the prior art, the utility model provides a kind of piston type suitable for soft clay area and draws water System, the system can not only guarantee the vacuum degree of dewatering well and efficiency of drawing water, also eliminate immersible pump be difficult to overhaul it is unfavorable Factor can obtain effect of preferably drawing water with lower cost.

To achieve the goals above, the utility model provides a kind of piston type pumping system suitable for soft clay area, packet Include a well casing, a piston component, a drinking-water pipe, a well lid, a filter material layer and a lifting device, the even tube wall cloth of the well casing It equipped with multiple limbers and is set in a foundation pit, the filter material layer is filled between the well casing and the foundation pit walls, described The outer diameter of piston component matches with the internal diameter of the well casing and merges and can be set to the well casing along the well casing axially reciprocating It is interior；The first end of the drinking-water pipe is provided with one first valve and bottom and the piston by first valve and well casing Space conducting or isolation, the second end of the drinking-water pipe between component bottom are connected with free surrounding space；The well lid sealing cover Between well casing mouth and the piston component, the lifting device and the piston component are sequentially connected.

Preferably, the piston component includes a piston rod and at least two piston pieces, and the piston piece interval is arranged fixation In the piston rod periphery, and the internal diameter of the outer diameter of the piston piece and the well casing cooperates.

Preferably, the piston rod is hollow, and the drinking-water pipe is set in the piston rod, the piston rod bottom setting There is one second valve.

Preferably, first valve and second valve include a valve plate, a valve plug and a locating part, the valve plate It is fixed on the piston rod inner wall, and the valve plate forms a valve port, the valve plug includes a bonnet and is perpendicularly fixed at described A guide post in the middle part of bonnet, the bonnet are set to the valve port can be completely covered the top of the valve plate, the guiding Bar is arranged in the valve port, and the sectional area of the guide rod is less than the area of the valve port, and the length of the guide rod is big In the thickness of the valve plate, the locating part is to the bonnet axial limiting.

Preferably, first valve and second valve use electronic valve.

Preferably, each piston piece offers the tube passage that draws water, and the drinking-water pipe is inserted in the tube passage that draws water It is interior and fixed with the piston piece.

Preferably, each piston piece includes the rubber unit that multiple stackings are laid, and each rubber unit includes The internal diameter of two tablettings and the rubber being set between two tablettings, the outer diameter of the rubber and the well casing is interference fitted, A gasket is provided between the adjacent rubber unit.

Preferably, the both ends of each piston piece are respectively arranged with a briquetting, and the briquetting is fixed on the piston rod Periphery and to the piston piece axial limiting.

It preferably, further include a sediment tube, the sediment tube is set to the well casing bottom.

It preferably, further include a sealing layer, the sealing layer is set to above the filter material layer.

The utility model due to use above technical scheme, make it have it is following the utility model has the advantages that

The cooperation of well casing, piston component, drinking-water pipe and lifting device is, it can be achieved that be not necessarily to the basis of immersible pump in soft clay area On, by utilizing negative pressure, realize effectively drawing water to dewatering well；On the basis for the vacuum degree and efficiency of drawing water for guaranteeing dewatering well On, while the unfavorable factor that immersible pump is difficult to overhaul is eliminated, and have the advantages that at low cost and draw water high-efficient.Filter material layer is used Extracted water is filtered in water-bearing layer.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the piston type pumping system suitable for soft clay area of the utility model embodiment；

Fig. 2 is the piston component of the utility model embodiment and the attachment structure schematic diagram of drinking-water pipe.

Specific embodiment

Below according to attached FIG. 1 to FIG. 2, the preferred embodiment of the utility model is provided, and is described in detail, is enabled more preferable Ground understands the function of the utility model, feature.

Fig. 1 and Fig. 2 are please referred to, a kind of piston type suitable for soft clay area of the utility model embodiment one, which draws water, is System, including a well casing 1, a piston component 2, a drinking-water pipe 3, a well lid 4, a filter material layer 5, a lifting device 6, a sediment tube 9 With a sealing layer 10, the even tube wall of well casing 1 is laid with multiple limbers and is set in a foundation pit 7, and filter material layer 5 is filled at well Between 7 wall of pipe 1 and foundation pit, the outer diameter of piston component 2 is matched with the internal diameter of well casing 1 to be merged and can set along 1 axially reciprocating of well casing It is placed in well casing 1；The first end of drinking-water pipe 3 be provided with one first valve 81 and by the bottom of the first valve 81 and well casing 1 with Space conducting or isolation, the second end of drinking-water pipe 3 between 2 bottom of piston component are connected with free surrounding space；4 sealing cover of well lid is set In 1 mouthful of well casing between piston component 2, lifting device 6 and piston component 2 are sequentially connected；Sediment tube is set to 1 bottom of well casing； Sealing layer 10 is set to 5 top of filter material layer.

The cooperation of well casing 1, piston component 2, drinking-water pipe 3 and lifting device 6 is, it can be achieved that in soft clay area without immersible pump On the basis of, by utilizing negative pressure, realize effectively drawing water to dewatering well；In the base for the vacuum degree and efficiency of drawing water for guaranteeing dewatering well On plinth, while the unfavorable factor that immersible pump is difficult to overhaul is eliminated, and has the advantages that at low cost and draw water high-efficient.Filter material layer 5 can be used layer of sand for being filtered to water extracted in water-bearing layer.Sealing layer 10 uses sealing material, in the present embodiment, Sealing layer 10 uses clay ball.

In the present embodiment, piston component 2 includes a piston rod 21 and at least two piston pieces 22, and the interval of piston piece 22 is arranged solid Due to 21 periphery of piston rod, and the internal diameter of the outer diameter of piston piece 22 and well casing 1 cooperates.

Piston rod 21 is hollow, and drinking-water pipe 3 is set in piston rod 21, and 21 bottom of piston rod is provided with one second valve 82.

First valve 81 and the second valve 82 include a valve plate 801, a valve plug 802 and a locating part (not shown), valve Plate 801 is fixed on 21 inner wall of piston rod, and valve plate 801 forms a valve port, and valve plug 802 includes a bonnet and is perpendicularly fixed at bonnet One guide post at middle part, bonnet are set to valve port can be completely covered the top of valve plate 801, and guide rod is arranged in valve port, and The sectional area of guide rod is less than the area of valve port, and the length of guide rod is greater than the thickness of valve plate 801, and locating part axially limits bonnet Position.

Each piston piece 22 includes the rubber unit that multiple stackings are laid, and each rubber unit includes two tablettings 222 and sets The rubber 221 being placed between two tablettings 222, the outer diameter of rubber 221 are slightly larger than the internal diameter of well casing 1, rubber 221 and 1 mistake of well casing It is full of cooperation, in the present embodiment, the thickness of rubber 221 is about 10mm；A gasket 223 is provided between adjacent rubber unit；Gasket 223 thickness is about 6mm.

In addition, the both ends of each piston piece 22 are respectively arranged with a briquetting 224, briquetting 224 is fixed on 21 periphery of piston rod And to 22 axial limiting of piston piece.

A kind of piston type pumping system suitable for soft clay area of the utility model embodiment one, in use, first Piston component 2 is put into well casing 1, is then turned on the motor of lifting device 6, lifting device 6 can drive piston component 2 in well casing It is moved up and down in 1.When 2 uplink of piston component, the first valve 81 and the second valve 82 are automatically closed, piston component 2 and lower part 1 inner wall of well casing between form vacuum, negative pressure is formed in well, so that water by negative pressure of vacuum is acted through filtrate in water-bearing layer Layer 5 flows into well casing 1；When 2 downlink of piston component, the first valve 81 and the second valve 82 are automatically turned on, while by drawing water Pipe 3 draws water.Such about 2 drive piston component moves back and forth, and can reach the purpose that vacuum is drawn water.

A kind of piston type pumping system suitable for soft clay area of the utility model embodiment two, structure and embodiment One is essentially identical, and difference is, the first valve 81 and the second valve 82 use electronic valve.

A kind of piston type pumping system suitable for soft clay area of the utility model embodiment three, structure and embodiment One is essentially identical, and difference is that each piston piece 22 offers 3 channel of drinking-water pipe, and drinking-water pipe 3 is inserted in 3 channel of drinking-water pipe It is interior and fixed with piston piece 22.In order to improve leakproofness, sealing element can be added between drinking-water pipe 3 and piston piece 22.

Combine figure embodiment that the utility model is described in detail above, those skilled in the art can root Many variations example is made to the utility model according to above description, thus, certain details in embodiment should not constitute practical to this Novel restriction, the utility model will be using the ranges that the appended claims define as the protection scope of the utility model.

Claims (10)

1. a kind of piston type pumping system suitable for soft clay area, which is characterized in that including a well casing, a piston component, one Drinking-water pipe, a well lid, a filter material layer and a lifting device, the even tube wall of the well casing are laid with multiple limbers and are set to In one foundation pit, the filter material layer is filled between the well casing and foundation pit walls, the outer diameter of the piston component and the well casing Internal diameter can be set in the well casing with merging along the well casing axially reciprocating；The first end of the drinking-water pipe is provided with One first valve and be connected by space between first valve and the bottom of well casing and the piston component bottom or every From the second end of the drinking-water pipe is connected with free surrounding space；The well lid sealing cover be set to well casing mouth and the piston component it Between, the lifting device and the piston component are sequentially connected.

2. the piston type pumping system according to claim 1 suitable for soft clay area, which is characterized in that the piston group Part includes a piston rod and at least two piston pieces, and the piston piece interval, which is arranged, is fixed on the piston rod periphery, and the work The internal diameter of the outer diameter of plug member and the well casing cooperates.

3. the piston type pumping system according to claim 2 suitable for soft clay area, which is characterized in that the piston rod Hollow, the drinking-water pipe is set in the piston rod, and the piston rod bottom is provided with one second valve.

4. the piston type pumping system according to claim 3 suitable for soft clay area, which is characterized in that first valve Door and second valve include a valve plate, a valve plug and a locating part, and the valve plate is fixed on the piston rod inner wall, and institute It states valve plate and forms a valve port, the valve plug includes a bonnet and the guide post that is perpendicularly fixed in the middle part of the bonnet, the valve Cap is set to the valve port can be completely covered the top of the valve plate, and guide rod is arranged in the valve port, and the guiding The sectional area of bar is less than the area of the valve port, and the length of the guide rod is greater than the thickness of the valve plate, the locating part pair The bonnet axial limiting.

5. the piston type pumping system according to claim 3 suitable for soft clay area, which is characterized in that first valve Door and second valve use electronic valve.

6. the piston type pumping system according to claim 2 suitable for soft clay area, which is characterized in that each work Plug member offers the tube passage that draws water, and the drinking-water pipe is inserted in the tube passage that draws water and fixes with the piston piece.

7. according to the described in any item piston type pumping systems suitable for soft clay area of claim 2~6, which is characterized in that Each piston piece includes the rubber unit that multiple stackings are laid, and each rubber unit includes two tablettings and is set to two The internal diameter of a rubber between the tabletting, the outer diameter of the rubber and the well casing is interference fitted, the adjacent rubber unit Between be provided with a gasket.

8. the piston type pumping system according to claim 7 suitable for soft clay area, which is characterized in that each work The both ends of plug member are respectively arranged with a briquetting, and the briquetting is fixed on the piston rod periphery and axially limits the piston piece Position.

9. the piston type pumping system according to claim 8 suitable for soft clay area, which is characterized in that further include one heavy Form sediment pipe, and the sediment tube is set to the well casing bottom.

10. the piston type pumping system according to claim 9 suitable for soft clay area, which is characterized in that further include one Sealing layer, the sealing layer are set to above the filter material layer.