CN207161076U - One kind layering water plug and layering pumping system - Google Patents

Abstract

A layered pumping device and a layered pumping system, relating to the technical field of layered pumping, wherein the first partition, the second partition and the third partition of the layered pumping device separate the pipe body into a water isolation cavity and a pumping cavity, The pumping chamber is connected with the corresponding aquifer outside the tube, and the pumping pipe in the water-separating chamber is provided with permeable holes. There is a water passage, and the water suction pipe is covered with a soft plug that can move along it and is used for opening and closing the water passage. This layered pumping device is suitable for multi-layer pumping tests. In the initial state, the soft plug is fitted with the second partition, and the pumping chamber is in a closed state. When pumping is required, the soft plug is moved to form a water passage. The pumping chamber is in the Open the pumping state, so as to achieve the purpose of stratified pumping. The layered pumping system of the embodiment of the utility model is economical and practical, and the operation is simple.

Description

A layered pumping device and a layered pumping system

technical field

The utility model relates to the technical field of layered water pumping, in particular to a layered water pumping device and a layered water pumping system.

Background technique

At present, in the fields of hydrogeological survey, mineral exploration, groundwater pollution evaluation, rational development of underground space in the process of urbanization, and basic engineering construction, complex water storage geological areas such as multi-layer aquifers and block water-bearing sections are often involved. For different aquifers, the water level, water quality and various hydrogeological parameters are different, so it is necessary to complete the hydrogeological survey by drilling and pumping tests in layers.

There are two traditional methods to obtain hydrogeological parameters of aquifers at different depths through construction drilling and pumping tests: one is to construct an exploratory well for each aquifer, and conduct pumping tests separately to obtain different aquifers. Hydrogeological parameters; the other is to determine the depth, thickness and lithology of the water-bearing (interval) layer based on the small-diameter coring stratum catalog and geophysical well data, design the drilling structure, and then use complex construction techniques to drill wells in stages (reaming in different stages), well construction in stages (depending on the stability of the formation to determine the level of the casing to be lowered), and pumping tests in stages. Both of the above two traditional methods have many disadvantages. The former requires a large number of wells to be constructed, occupies a large area, has a heavy drilling workload, and has a large economic investment; According to the number of layers of the aquifer, the drilling process is complex, requires a long construction time and test time, and the economic investment is also large. It is also prone to various drilling accidents. For example: the patent document with the application number 201510517476.7 provides a layered water pumping method, which firstly divides the water pumping holes into corresponding n sections according to the number of aquifer sections, and performs hierarchical reaming, and then in the first to the first water pumping holes A waterproof pipe is inserted into the section (n-1) to isolate and stop water, and the nth water pipe is inserted into the nth section of the water hole to pump water. After the water is successfully pumped, the nth water pipe is pulled out, and the water hole in the nth section From the bottom of the hole, it is sealed with cement slurry; so far, the pumping test of the nth section of the pumping hole is completed. Although this method can reduce the disturbance of the waterproof pipe to the wall of the pumping hole and avoid the failure of the pumping test caused by the collapse of the pumping hole, the drilling workload is heavy due to the need for step-by-step reaming, and the pumping test layer can only be formed by the bottom layer. It is carried out upwards, and after each layer of the test, it needs to be sealed with cement slurry, and the workload is heavy. The patent document with the application number of 201420003791.9 discloses a stratified pumping device, which is simple to operate and only needs to move the drill pipe up and down to control the pumping state of the upper and lower layers to achieve the purpose of stratified pumping. However, the stratified pumping can only be applied to geological regions with two layers of aquifers, and its application is limited.

Therefore, it is of great engineering significance to design an economical, practical, simple and reliable layered pumping device.

Utility model content

The purpose of this utility model is to provide a layered pumping device, which is suitable for multi-layer pumping tests, and controls the open pumping state and closed state of the aquifer through a simple on-off valve control device installed in each aquifer , so as to achieve the purpose of stratified water pumping.

Another object of the utility model is to provide a layered pumping system, which is economical, practical and easy to operate.

Embodiments of the utility model are achieved in that:

A layered water pumping device, which includes a pipe body, a water pumping pipe arranged in the same direction in the pipe body, and pumping units arranged in the pipe body from top to bottom and corresponding to the aquifer one by one, each pumping unit includes Down to the first partition, the second partition and the third partition fixed in the pipe body and sleeved on the suction pipe, the first partition, the second partition and the third partition divide the pipe body into partitions. The water chamber and the pumping chamber, the pumping chamber communicates with the corresponding aquifer outside the pipe body, the water pumping pipe in the water barrier chamber is provided with permeable holes, the water pumping pipe fits with the first partition and the third partition, the suction pipe and the second partition A water passage is left between the two partitions, and a cork that can move along it and is used to open and close the water passage is sheathed on the suction pipe.

In a preferred embodiment of the present utility model, the above-mentioned pipe body includes a pumping well wall, and a part of the pumping well wall corresponding to the pumping cavity is provided with several water-permeable channels, and a part of the pumping well wall corresponding to the pumping cavity is provided with a permeable annular filter , the part of the wall of the pumping well that is not provided with an annular filter is provided with an inflatable annular rubber bag.

In a preferred embodiment of the present invention, the above-mentioned water-permeable passages are evenly arranged in the circumferential direction, and the ring filter is a non-woven fabric ring column with a filler inside, and the filler is graded sand, gravel or stone.

In a preferred embodiment of the present invention, a first sealing ring is pasted on the part where the water suction pipe passes through the second partition, and the soft plug is tightly sleeved on the first sealing ring, and can be moved up and down along the water suction pipe by external force.

In a preferred embodiment of the present invention, the above-mentioned stratified water pumping device further includes a push valve fixed on the suction pipe, a steel rod is fixed between the built-in piston of the push valve and the cork, and the piston is movable and drives the cork to move.

In a preferred embodiment of the present utility model, the above-mentioned push valve is a pneumatic push valve, and the layered pumping device also includes an inflation pipeline for inflating the pneumatic push valve. The inflation pipeline is located in the suction pipe, and one end is connected to the pneumatic push valve. The other end protrudes from the tube body.

In a preferred embodiment of the present invention, the above-mentioned stratified water pumping device further includes a fixing ring fixed to the water pumping pipe, and a spring is fixed between the fixing ring and the cork.

In a preferred embodiment of the present invention, the fixed ring is located 20-40 cm below the cork, the push valve is located 5-10 cm below the fixed ring, and the inner wall of the push valve is provided with a second sealing ring.

In a preferred embodiment of the present invention, the above-mentioned water passage and the cork are in the shape of a truncated cone or an inverted truncated circle, and the cork can be fitted with the water passage.

A layered pumping system includes the above-mentioned layered pumping device.

The beneficial effects of the embodiment of the utility model are: the layered pumping device of the embodiment of the utility model includes a pipe body, a water pumping pipe arranged in the same direction in the pipe body, and a water pipe arranged in the pipe body from top to bottom, and connected with the aquifer one by one Corresponding pumping units, each pumping unit includes a first partition, a second partition and a third partition fixed in the pipe body from top to bottom and sleeved on the suction pipe, the first partition, the second partition The plate and the third partition divide the pipe body into a water-repellent chamber and a pumping chamber. The water-pumping chamber communicates with the corresponding aquifer outside the pipe body. The three partitions are fitted together, and a water passage is left between the suction pipe and the second partition, and the suction pipe is sheathed with a cork which can move along it and is used for opening and closing the water passage. This layered pumping device is suitable for multi-layer pumping tests. In the initial state, the soft plug is fitted with the second partition, and the pumping chamber is in a closed state. When pumping is required, the soft plug is moved to form a water passage. The pumping chamber is in the Open the pumping state, so as to achieve the purpose of stratified pumping. The layered pumping system of the embodiment of the utility model is economical and practical, and the operation is simple.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

Fig. 1 is a schematic structural view of a layered pumping device provided by the first embodiment of the present invention;

Fig. 2 is a top view after removing all partitions and corks in Fig. 1;

Fig. 3 is a schematic structural view of a layered pumping device provided by the second embodiment of the present invention;

Fig. 4 is a top view of Fig. 3 after removing all partitions and corks.

Icons: 100-layered pumping device; 110-pipe body; 111-pumping well wall; 112-permeable channel; 113-annular filter; 114-annular rubber bag; 121-first partition; 122-second partition ;123-the third partition; 124-water isolation chamber; 125-pumping chamber; 126-water channel; 131-soft plug; Ring; 136-spring; 137-inflatable pipe; 138-second sealing ring; 139-piston; 141-suction pipe; 142-permeable hole; 143-pump; 221-airtight cavity; 222-the second partition; 226-water channel; 231-soft plug; 233-push valve; 234-steel rod; 239-piston.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" etc. is based on the orientation or positional relationship shown in the drawings, or is The usual orientation or positional relationship of the utility model product in use is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, Or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

first embodiment

Please refer to Fig. 1 and Fig. 2, the present embodiment provides a layered pumping device 100, which is composed of a layered water permeable device for layered water permeation, an on-off valve control device for switching between a closed state and an open pumping state It is composed of a pumping device for pumping water. The layered permeable device includes a pipe body 110, and pumping units arranged in the pipe body 110 from top to bottom and corresponding to the aquifer one by one. The water pumping device includes a water suction pipe 141 arranged in the same direction in the pipe body 110 , and a water pump 143 for providing power. The water pump 143 is connected to the water suction pipe 141 . Wherein, each pumping unit includes a first partition 121 , a second partition 122 and a third partition 123 fixed in the pipe body 110 from top to bottom and sleeved on the suction pipe 141 , the first partition 121 1. The second partition 122 and the third partition 123 separate the pipe body 110 into a water barrier chamber 124 and a water pumping chamber 125 , and the water pumping chamber 125 communicates with the corresponding aquifer outside the pipe body 110 . The water suction pipe 141 in the water isolation chamber 124 is provided with a permeable hole 142, the water suction pipe 141 fits between the first partition 121 and the third partition 123, and there is a water outlet between the suction pipe 141 and the second partition 122. Channel 126. The opening and closing valve control device includes a cork 131 sleeved on the water suction pipe 141 and movable along it, and used for opening and closing the water passage 126 . When the on-off valve control device controls the cork 131 to move to close the water passage 126, the pumping chamber 125 is in a closed state, and the water in the aquifer enters the pumping chamber 125; when the on-off valve control device controls the cork 131 to move to open the water passage 126, the water pumping chamber 125 is in an open water pumping state, and the power is provided by the water pump 143, so that the water in the water pumping chamber 125 passes through the water passage 126, and enters the water pumping pipe 141 from the permeable hole 142 on the water pumping pipe 141 in the water isolation chamber 124, Finally, it is drawn out to achieve the purpose of stratified water pumping.

In this embodiment, the layered pumping device 100 includes five pumping units arranged adjacently from top to bottom, and each aquifer corresponds to a pumping unit, so as to control the pumping test of each aquifer. The third partition 123 of the pumping unit above is simultaneously used as the first partition 121 of the pumping unit below. Plates 123 are spaced apart.

In this embodiment, the soft plug 131 is a soft rubber plug; the first partition 121, the second partition 122 and the third partition 123 are all impermeable partitions; In a platform shape, the cork 131 fits with the water passage 126 , and the cork 131 can move below the second partition 122 .

In this embodiment, the pipe body 110 includes a pumping well wall 111, and the part of the pumping well wall 111 corresponding to the pumping cavity 125 is provided with several water-permeable channels 112, and the part of the pumping well wall 111 corresponding to the pumping cavity 125 is provided with a permeable annular filter. 113, the part of the pumping well wall 111 that is not provided with the annular filter 113 is set with an inflatable annular rubber bag 114, generally the part of the pumping well wall 111 corresponding to the water-proof chamber 124 is set with a ring-shaped rubber bag 114, the first partition 121 top surface is flush with the top surface of the annular rubber bag 114, the bottom surface of the second dividing plate 122 is flush with the bottom surface of the annular rubber bag 114 and the top surface of the annular filter 113, and the third dividing plate 123 top surface is flush with the annular filter 113 bottoms are flush. The water-permeable channels 112 are evenly arranged in the circumferential direction, and the annular filter 113 is a non-woven ring column with a filler inside, and the filler is graded sand, gravel or stone to meet the needs of different projects. Due to the lateral pressure of the soil, the annular filter 113 is in close contact with the pumping well wall 111 in the circumferential direction, and the annular filter 113 communicates with the permeable channel 112 to realize water permeability; by controlling the inflation pressure of the annular rubber bag 114, the annular rubber bag 114 It is in close contact with the pumping well wall 111 in the circumferential direction and vertically in close contact with the annular filter 113 to achieve good water-stopping performance. Expandable rubber is used as the water-stopping material, and good water-stopping is achieved by controlling the inflation pressure, which is highly efficient and environmentally friendly. Overcome the shortcomings of traditional materials that are difficult to stop water. The water permeability of the pipe body 110 is combined with the water-stopping property to finally achieve the purpose of layered water permeability. The outer diameter of the layered pumping device 100 is uniform, and the required drilling structure is simple. It only needs to drill one pumping hole, one diameter to the bottom, economical and practical, and highly popularizable.

In this embodiment, the opening and closing valve control device also includes a push valve 133 and a fixed ring 135 fixed to the suction pipe 141 under the second partition 122. Valve 133 inflates the inflation pipe 137, pushes the built-in piston 139 of the valve 133 and the soft plug 131 is fixed with a steel rod 134, the piston 139 is movable to drive the soft plug 131 to move; the fixed ring 135 and the soft plug 131 are fixed with a spring 136 The inflation pipeline 137 is located in the suction pipe 141, and one end is connected with the pneumatic push valve 133, and the other end extends out of the pipe body 110. In the initial state, the air pressure push valve 133 is not inflated, the spring 136 is in a compressed state, and the soft plug 131 is pushed to move upwards, and is fitted with the second partition 122, and the pumping chamber 125 is in a closed state; When 133 is inflated, the high-pressure gas pushes the piston 139 to move downward, and at the same time, the connected steel rod 134 drives the soft rubber plug to move downward, and compresses the spring 136, so that the soft plug 131 leaves the second partition 122 to form a water passage 126 , the pumping chamber 125 is in an open pumping state at this time. The on-off valve control device controls the pumping state of the pumping chamber 125 corresponding to the aquifer by inflating the air pressure push valve 133, and the operation is simple. And the movement of the opening and closing valve control device is very stable, and will not cause disturbance to the wall of the pumping hole where the layered pumping device 100 is arranged, effectively avoiding the failure of the pumping test caused by the collapse of the pumping hole, and greatly improving the success rate of the pumping test.

In this embodiment, the portion of the suction pipe 141 passing through the second partition 122 is circumferentially pasted with a first sealing ring 132 , and the first sealing ring 132 is arranged above the top surface of the first partition 121 to the bottom of the first partition 121 In the range below 50cm below the bottom surface, the cork 131 is tightly sleeved on the first sealing ring 132, and can be moved up and down along the suction pipe 141 by external force. The fixed ring 135 is located at 20-40 cm below the soft plug 131, and the push valve 133 is located at 5-10 cm below the fixed ring 135. The inner wall of the push valve 133 is provided with a second sealing ring 138 to ensure that the piston 139 moves, and the airtightness of the push valve 133 is ensured. sex. The water permeable holes 142 are uniformly arranged in the circumferential direction within the range of 30-80 cm above the second partition 122 .

The working process of stratified pumping device 100 is:

(1) According to the needs of the project or the requirements of the pumping test, the layered pumping device 100 is arranged so that each aquifer corresponds to a pumping unit, and each aquifer communicates with the pumping chamber 125 of the corresponding pumping unit.

(2) In the initial state, due to the pushing force of the compressed spring 136 in all pumping units, the soft plug 131 fits with the second partition 122 , and all the pumping chambers 125 are in a closed state.

(3) When it is necessary to perform a pumping test on a certain aquifer, adjust the corresponding on-off valve control device, that is, fill the air pressure push valve 133 with high-pressure gas through the inflation pipeline 137, and the high-pressure gas pushes the piston 139 to move downward. The steel rod 134 drives the cork 131 to move downward, and compresses the spring 136, so that the cork 131 and the second partition 122 are opened to form a water passage 126, so that the corresponding pumping chamber 125 is in an open pumping state.

(4) Power is provided by the water pump 143 , so that the water in the pumping cavity 125 in the open pumping state is discharged through the water passage 126 , the water permeable hole 142 , and the water pumping pipe 141 .

second embodiment

Please refer to Fig. 3 and Fig. 4, the present embodiment provides a layered pumping device 200, which includes a pipe body 210, a suction pipe 141 arranged in the same direction in the pipe body 210, a water pump 143 for providing power, and The pumping units are arranged in the pipe body 210 from top to bottom and correspond one-to-one to the aquifer. The water pump 143 is connected to the pumping pipe 141 . Wherein, each pumping unit includes a first partition 121 , a second partition 222 and a third partition 123 fixed in the pipe body 210 from top to bottom and sleeved on the suction pipe 141 , the first partition 121 1. The second partition 222 and the third partition 123 separate the pipe body 210 into a water barrier chamber 124 and a water pumping chamber 125 , and the water pumping chamber 125 communicates with the corresponding aquifer outside the pipe body 210 . The water suction pipe 141 in the water isolation cavity 124 is provided with a water permeable hole 142, the water suction pipe 141 fits between the first partition 121 and the third partition 123, and there is a water outlet between the suction pipe 141 and the second partition 222. Channel 226. The suction pipe 141 is sheathed with a cork 231 movable along it for opening and closing the water passage 226 , and an opening and closing valve control device for controlling the movement of the cork 231 . When the on-off valve control device controls the cork 231 to move to close the water passage 226, the pumping chamber 125 is in a sealed state, and the water in the aquifer enters the pumping chamber 125; when the on-off valve control device controls the cork 231 to move to open the water passage 226, the water pumping chamber 125 is in an open water pumping state, and the power is provided by the water pump 143, so that the water in the water pumping chamber 125 passes through the water passage 226, and enters the water pumping pipe 141 from the permeable hole 142 on the water pumping pipe 141 in the water isolation chamber 124, Finally, it is drawn out to achieve the purpose of stratified water pumping.

In this embodiment, the layered pumping device 200 includes three pumping units arranged at intervals from top to bottom, and each aquifer corresponds to a pumping unit, so as to control the pumping test of each aquifer. There is a certain distance between the third partition 123 of the upper pumping unit and the first partition 121 of the adjacent lower pumping unit, and a closed cavity 221 is formed between them.

In this embodiment, the cork 231 has a rounded truncated shape, the water passage 226 has a rounded truncated shape, the cork 231 fits with the water passage 226 , and the cork 231 can move to the top of the second partition 222 .

In this embodiment, the pipe body 210 includes a pumping well wall 111, and the part of the pumping well wall 111 corresponding to the pumping cavity 125 is provided with several water-permeable channels 112, and the part of the pumping well wall 111 corresponding to the pumping cavity 125 is provided with a permeable annular filter. 113 , an inflatable annular rubber bag 214 is sheathed on the part of the pumping well wall 111 that is not provided with the annular filter 113 . The water-permeable channels 112 are evenly arranged in the circumferential direction, and the annular filter 113 is a non-woven ring column with a filler inside, and the filler is graded sand, gravel or stone to meet the needs of different projects.

In this embodiment, the opening and closing valve control device also includes a push valve 233 that is fixed to the suction pipe 141 above the second partition 222. The inflatable pipeline 137 of the push valve 233 is fixed with a steel rod 234 between the built-in piston 239 of the push valve 233 and the soft plug 231, and the movable piston 239 drives the soft plug 231 to move. In the initial state, the air pressure push valve 233 is not inflated, the cork 231 moves downward under the action of gravity, and fits with the second partition 222, and the pumping chamber 125 is in a closed state; When inflating, the high-pressure gas pushes the piston 239 to move upward, and at the same time, the connected steel rod 234 drives the soft rubber plug to move upward, so that the soft plug 231 leaves the second partition 222 to form a water passage 226. At this time, the pumping chamber 125 is open. pumping state.

In this embodiment, the part of the suction pipe 141 passing through the second partition 222 is pasted with the first sealing ring 132 in the circumferential direction, and the soft plug 231 is tightly sleeved on the first sealing ring 132, and can be moved up and down along the suction pipe 141 by external force. . The inner wall of the push valve 233 is provided with a second sealing ring 138 to ensure the airtightness of the push valve 233 when the piston 239 moves.

In summary, the layered pumping device of the present utility model is suitable for multi-layer pumping tests, and the open pumping state and the closed state of the aquifer are controlled by the simple opening and closing valve control device arranged in each aquifer, so that Realize the purpose of layered pumping; the layered pumping system of the utility model is economical, practical and easy to operate.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (10)

1. one kind layering water plug, it is characterised in that it includes body, the drinking-water pipe being arranged in the same direction in the body, with And be from top to bottom arranged in the body and drawn water correspondingly unit with water-bearing layer, each unit that draws water includes From top to bottom it is fixed on first partition, second partition and the 3rd dividing plate in the body and being sheathed on the drinking-water pipe, institute State first partition, the second partition and the 3rd dividing plate and the body is separated into water proof chamber and the chamber that draws water, it is described to draw water Outer corresponding the water-bearing layer of chamber and the body connects, and the drinking-water pipe of the water proof intracavitary offers permeable hole, the drinking-water pipe and It is fitted together between first partition, the 3rd dividing plate, water passage is left between the drinking-water pipe and the second partition, it is described to take out Be arranged with water pipe can be moved along it, the cork for being opened and closed the water passage.

2. layering water plug according to claim 1, it is characterised in that the body includes the borehole wall that draws water, described to take out Correspondingly the draw water part of chamber of well wall offers some water-permeable passages, and the borehole wall that draws water correspondingly draws water, and be arranged with can for the part of chamber Permeable annular filter, the part that the borehole wall that draws water is not provided with annular filter are arranged with inflatable annular rubber pocket.

3. layering water plug according to claim 2, it is characterised in that the water-permeable passage ring is evenly arranged, institute Annular filter is stated as the interior non-woven fabrics annulated column for having filler, the filler is graded sand, sandstone or stone.

4. layering water plug according to claim 1, it is characterised in that the drinking-water pipe passes through the second partition Bonding partially has the first sealing ring, and the cork is close to be sheathed on first sealing ring, can be by external force along above and below drinking-water pipe It is mobile.

5. layering water plug according to claim 1, it is characterised in that the layering water plug also includes being fixed on The promotion valve of drinking-water pipe, steel pole is fixed between the built-in piston and the cork of the promotion valve, the piston is removable simultaneously The cork is driven to move.

6. layering water plug according to claim 5, it is characterised in that the promotion valve is that air pressure promotes valve, described Being layered water plug also includes being used for the gas ducting for promoting valve inflation toward the air pressure, and the gas ducting draws water positioned at described In pipe, and one end promotes valve to be connected with pneumatic, and the other end stretches out body.

7. layering water plug according to claim 5, it is characterised in that the layering water plug also includes being fixed on The retainer ring of drinking-water pipe, spring is fixed between the retainer ring and the cork.

8. layering water plug according to claim 7, it is characterised in that the retainer ring is located at 20 below the cork At~40cm, the promotion valve is located at below retainer ring at 5~10cm, and the promotion valve inwall is provided with the second sealing ring.

9. layering water plug according to claim 1, it is characterised in that the water passage and the cork are round platform Shape or reverse frustoconic, the cork can be mutually chimeric with the water passage.

10. one kind layering pumping system, it is characterised in that it includes layering as claimed in any one of claims 1-9 wherein and drawn water Device.