CN206668531U - Pumping plant - Google Patents

Abstract

The utility model provides a kind of pumping plant, and it includes pumping plant body, the inlet for being connected to pumping plant body and liquid outlet, is arranged at the intrinsic pit shaft of pumping plant, the drain pipe being connected between pit shaft and liquid outlet and the pump seat being arranged in pit shaft lower section or pit shaft.Pit shaft is split-type structural, including lower cylinder portion and the upper cylinder portion for being communicated in lower cylinder portion, wherein drain pipe are connected to cylinder portion or lower cylinder portion；Pumping plant also includes at least two fixed plates being along the circumferential direction uniformly arranged, and lower cylinder portion is fixed on pumping plant body by fixed plate.Because single lower cylinder portion or upper cylinder portion considerably reduce compared to the pit shaft weight of entirety, convenient in carrying, installation operation is convenient, flexible, lower cylinder portion and upper cylinder portion can be installed respectively, so lower shell is caused to be easy to be aligned with pump seat, the drain pipe in upper cylinder portion is easily aligned the liquid outlet on pumping plant body simultaneously, therefore pumping plant of the present utility model assembling is very convenient.

Description

Pumping plant

Technical field

The utility model relates generally to a kind of pumping plant for being used to convey liquid, in particular to a kind of pumping plant.

Background technology

With the development of urban construction, municipal rainwater, the amount of sewage is more and more, therefore various sewage occurs Processing equipment, pumping plant are one of them.

Pumping plant, which generally comprises pumping plant body, is covered on pumping plant body connects top cover at top end opening, is installed on pumping plant body Interior pit shaft, the feed tube of pumping plant body is connected to, the outlet pipe of pit shaft is connected to and is arranged at latent below the pit shaft Water axial-flow pump.

When assembling pumping plant, it is necessary first to be fixed for supporting the pump seat of submersible axial flow pump in pumping plant body；Then will Pit shaft is lifted to pumping plant body, the lower ending opening of pit shaft is connected pump seat, is connected to the outlet pipe alignment of pit shaft upper end Reserved delivery port and fixation on pumping plant body；Then submersible axial flow pump is slowly declined and then is installed on pump seat along pit shaft On；Last top cover, and use chemical agent top pressure closure and pumping plant body.

In the assembling process of above-mentioned pumping plant, pit shaft lower end will be aligned with pump seat, and the outlet pipe mouth of pipe of upper end is wanted and pump The reserved opening alignment stood on body, it is relatively difficult in practical operation, it is often necessary to which that adjustment could complete installation repeatedly, especially When the height of pumping plant is higher is even up to 8 meters for example more than 6 meters, installation difficulty can be increased further.

In addition, in above-mentioned pumping plant, the sealing generally use chemical agent between top cover and pumping plant body, this causes chemical drugs A large amount of uses of agent, on the one hand it is unfavorable for environmental protection, easily causes to reveal after the failure of another aspect chemical agent, sealing is unreliable.

Above- mentioned information is only used for strengthening the understanding to background of the present utility model disclosed in the background section, because This it can include not forming the information to prior art known to persons of ordinary skill in the art.

Utility model content

One of the present utility model aims to overcome that above-mentioned the deficiencies in the prior art, there is provided a kind of pump easy to assembly Stand；

A further object of the present utility model is to provide one kind without using chemical agent top pressure closure and pumping plant body, and The pumping plant of sealed reliable；

Further object of the present utility model is to provide a kind of pumping plant easy to maintenance.

To achieve the above object, the utility model adopts the following technical scheme that：

According to one side of the present utility model, the utility model provides a kind of pumping plant, including prefabricated pumping plant body, company Be connected to the pumping plant body inlet and liquid outlet, be arranged at the intrinsic pit shaft of the pumping plant, be connected to the pit shaft and Drain pipe between the liquid outlet and pump seat below the pit shaft or in the pit shaft is arranged at, wherein the pit shaft is Split-type structural, it includes lower cylinder portion and is communicated in the upper cylinder portion in the lower cylinder portion, wherein the drain pipe is connected on described Cylinder portion；The pumping plant also includes at least two fixed plates being along the circumferential direction uniformly arranged, and the lower cylinder portion passes through at least two pieces The fixed plate is fixed on the pumping plant body.

As shown from the above technical solution, it is the advantages of the utility model with good effect：In pumping plant of the present utility model, Due to the split-type structural that pit shaft is made up of the lower cylinder portion being connected with each other and upper cylinder portion, be primarily due to individually to play cylinder portion or Upper cylinder portion considerably reduces compared to the pit shaft weight of entirety, convenient in carrying, and installation operation is convenient, flexible, can install down respectively Cylinder portion and upper cylinder portion, so that lower shell is easy to be aligned with pump seat, while the drain pipe in upper cylinder portion is easily aligned pumping plant Liquid outlet on body, therefore pumping plant of the present utility model assembling is very convenient.In addition, in the utility model, pass through at least two pieces Pumping plant body is fixed on by fixed plate in lower cylinder portion, on the one hand fixed than stronger, and on the other hand, fixed plate is by lower cylinder portion and pumping plant Annular space between body is separated out some runners, and guiding stream is advantageous to eliminate turbulent flow, is homogenized fluid along each flow passage Fluidised form, and shock of the fluid in fixed plate can also eliminate substantial amounts of kinetic energy, and the fluid of homogeneous state is provided for immersible pump liquid sucting port, Be advantageous to mitigate vibrations and the noise of immersible pump.

According to an embodiment of the present utility model, the upper cylinder portion is removably attachable to the lower cylinder portion.Work as needs During maintenance, cylinder portion can be pulled down, increases the intrinsic working space of pumping plant；When needing to change in addition, cylinder can be only replaced with One of portion and lower cylinder portion, and another it is unspoiled can still retain be continuing with, be advantageous to cost-effective.

According to an embodiment of the present utility model, the drain pipe is integrally formed or is fixedly connected with the upper cylinder portion In the upper cylinder portion.

According to an embodiment of the present utility model, the pumping plant sheet is at least fixed on the outside of two pieces of fixed plates Body, bottom is concordant with the pumping plant body bottom face or is fixed on the bottom plate of the pumping plant body, and the lower cylinder portion is fixed In the inner side of at least two pieces fixed plates.

According to an embodiment of the present utility model, the pump seat is arranged at below the lower cylinder portion, and is fixed at least The inner side of two pieces of fixed plates.

According to an embodiment of the present utility model, the gap between the fixed plate and the pump seat is provided with sealing Part, so as to which the lower cylinder portion is separated at least two phases by least two pieces of fixed plates with the space between the pumping plant body The independent flow passage mutually completely cut off, water hole is provided with corresponding to each described independent flow passage on the pump seat.Due to fixed plate and pump Seat between gap sealed by seal, when fluid by when, avoid debris therein such as fag end, strap etc. and passing through gap When be wound on pump seat.

According to an embodiment of the present utility model, the pumping plant body also includes first portion, the connection being relatively large in diameter The tapered portion that is tapered into first portion and diameter and less second portion of diameter for being connected to the tapered portion, it is described Tapered portion is fixed with auxiliary supports.

According to an embodiment of the present utility model, flexible joint is provided between the liquid outlet and the drain pipe.It is soft Property joint not only make it that the attended operation of the drain pipe and the liquid outlet on pumping plant body in cylinder portion is very convenient；Also reduce simultaneously The drain pipe in upper cylinder portion and the alignment difficulty of the liquid outlet on pumping plant body, though the two position a little bias be present still can be real Now connect.

According to an embodiment of the present utility model, sealing ring is provided between the top cover and the pumping plant body.Top cover It instead of by sealing ring sealing between pumping plant body and sealed with chemical agent, reduce use of the chemical agent in pumping plant Amount, beneficial to environmental protection；Meanwhile sealing ring sealing means are detachable-type sealed, convenient maintenance, change.

According to an embodiment of the present utility model, the sealing ring is rubber seal, and it includes ring body, in institute The lateral surface for stating ring body is provided with annular relief, and the top cover, the pumping plant body and the rubber seal are fixed There is bolt.Rubber seal has preferably elasticity, and sealing is tight, and annular relief then can further lift-off seal performance.Its He can also be applied to the utility model by type seal circle.Top cover and pumping plant body can be securely attached together by bolt, In the case of setting bolt, the attachment structure between the pumping plant bodies top opening and top cover of mutual cooperation can simplify, you can with Less consideration need not consider the connectivity robustness of the two；Conversely, have mutually in pumping plant bodies top opening and design of cover In the case of the attachment structure of cooperation is can ensure that the bonding strength of the two, bolt can also need not be used.

According to an embodiment of the present utility model, the lug boss of the rubber seal is in pawl shape, toothed projections Portion can further lift the sealing property of rubber seal.

According to an embodiment of the present utility model, the pumping plant, which also includes carrying blue grid and is installed on, described carries blue grid Gate valve, it is described carry blue grid and can slide up and down to be installed in the pumping plant body；It is described to carry blue grid and have size larger Grid water inlet and the less grid delivery port of some sizes；The gate valve includes flashboard, and the flashboard can play on or off The grid water inlet for carrying blue grid is closed, under the pumping plant working condition, the Gate-valve sealing is connected to the inlet. It can realize that the grid water inlet for carrying blue grid is closed on or off while realizing by gate valve and open and close inlet in the lump, use It is convenient.

According to an embodiment of the present utility model, the gate valve also include backboard, the parallel backboard panel and Side wall, wherein the side wall connects the left and right sides and bottom side of the backboard and the panel, the backboard and the panel Middle part offer sluice gate, sluice gate is corresponding with the grid water inlet, and the top side of the backboard and the panel is opening, with Inserted for the flashboard from the opening between the backboard and the panel and block the sluice gate.

According to an embodiment of the present utility model, the backboard of the gate valve, which is fixed on, described carries blue grid.

According to an embodiment of the present utility model, the gate valve also includes the connecting cylinder set around the sluice gate, institute The panel is fixed in the one end for stating connecting cylinder, and the other end, which is fixed on, described carries blue grid.

According to an embodiment of the present utility model, the flashboard bottom both sides of the gate valve have lead angle.

According to an embodiment of the present utility model, the pumping plant also includes the gate valve for being installed on the inlet end, The gate valve includes flashboard, and the flashboard can open or close the inlet.On and off is beaten by inserting or discharging flashboard Inlet is closed, it is easy to operate.

According to an embodiment of the present utility model, the gate valve also include backboard, the parallel backboard panel and Side wall, wherein the side wall connects the left and right sides and bottom side of the backboard and the panel, the backboard and the panel Middle part offer sluice gate, the sluice gate is corresponding with the inlet, and the top side of the backboard and the panel is opening, with Inserted for the flashboard from the opening between the backboard and the panel and block the sluice gate.

According to an embodiment of the present utility model, the pumping plant also includes the immersible pump for being installed on the pump seat.

According to an embodiment of the present utility model, the pumping plant is prefabricated pumping plant.

By description of a preferred embodiment referring to the drawings, of the present utility model above-mentioned and other purposes, feature It will be apparent from advantage.

Brief description of the drawings

Figure 1A is the perspective exploded view of the prefabricated pumping plant embodiment in the utility model pumping plant；

Figure 1B is the assembling stereogram of the prefabricated pumping plant shown in Figure 1A, top cover not shown in it；

Fig. 1 C are M magnified partial views in Figure 1B；

Fig. 1 D are A-A sectional views in Figure 1B；

Fig. 2A shows the exploded view that top cover is sealed with pumping plant body by sealing ring in prefabricated pumping plant shown in Figure 1A；

Fig. 2 B show the assembling figure that top cover is sealed with pumping plant body by sealing ring in prefabricated pumping plant shown in Figure 1A；

Fig. 2 C show portion P enlarged drawing in Fig. 2A；

Fig. 3 A show the dimensional structure diagram of the gate valve in the prefabricated pumping plant shown in Figure 1A；

Fig. 3 B show the front view of gate valve shown in Fig. 3 A；

Fig. 3 C show Fig. 3 B right view；

Fig. 3 D show Fig. 3 B upward view；

Fig. 3 E show Fig. 3 B top view；

Fig. 4 A show the dimensional structure diagram for carrying blue grid in the prefabricated pumping plant shown in Figure 1A；

Fig. 4 B show to carry the front view of blue grid shown in Fig. 4 A；

Fig. 4 C show Fig. 4 B right view；

Fig. 4 D show Fig. 4 B upward view；

Fig. 4 E show Fig. 4 B top view.

Wherein：1st, pumping plant body；10th, inlet；20th, liquid outlet；16th, support bar；19th, guide rail；11st, first portion；12、 Tapered portion；13rd, second portion；17th, bottom plate；18th, independent flow passage；19th, support bar；2nd, pit shaft；21st, lower cylinder portion；22nd, upper cylinder portion； 23rd, fixed plate；25th, drain pipe；3rd, immersible pump；30th, flexible joint；4th, top cover；40th, manhole；41st, joint portion；5th, blue grid is carried； 51st, grid water inlet；52nd, grid delivery port；6th, pump seat；65th, water hole；7th, rubber seal；71st, ring body；72nd, it is raised Portion；8th, gate valve；81st, backboard；82nd, panel；83rd, sluice gate；84th, flashboard；85th, connecting cylinder；86th, side wall.

Embodiment

Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, these embodiments are provided so that this practicality is new The design of example embodiment fully and completely, and will be comprehensively communicated to those skilled in the art by type.Identical in figure Reference represents same or similar structure, thus will omit their detailed description.

Specific embodiment of the utility model is described more fully below.It should be noted that the embodiments described herein is served only for For example, it is not limited to the utility model.

The utility model pumping plant, can be civil engineering structure, preferably precast construction, it is pre- more preferably made of fiberglass Structure processed.It is described in detail below by taking prefabricated pumping plant as an example.

Definition on orientation " on ", " under "：The prefabricated pumping plant of the utility model is in normal work, the direction away from ground For " on ", the direction on close ground in contrast for " under "；Specific in prefabricated pumping plant, referring to Figure 1A and Figure 1B, pumping plant sheet The one side of the setting top cover 4 of body 1 is following above, to set the one side of pump seat 6.

Referring to Figure 1A and Figure 1B, Figure 1A is the perspective exploded view of the prefabricated embodiment of pumping plant one of the utility model；Figure 1B is the assembling stereogram of the prefabricated pumping plant shown in Figure 1A.As shown in FIG. 1A and 1B, the prefabricated pumping plant of the present invention includes prefabricated Pumping plant body 1, pit shaft 2, inlet 10, liquid outlet 20, top cover 4, pump seat 6, immersible pump 3.

In this embodiment, pumping plant body 1 includes first portion 13 of 11, second, portion and tapered portion 12.It is wherein tapered Portion 12 is connected between first portion 11 and second portion 13.The diameter in first portion 11 is more than second portion 13.Further, The outside of tapered portion 12 is fixed with auxiliary supports 24, such as supporting plate, reinforcement etc..

Inlet 10 is provided with the position of close tapered portion 12 in first portion 11, the inlet 10 can be with first portion 11 It is integrally formed or the mode such as welded is fixed on first portion 11.In second portion 13 upper end, i.e., close to top cover 4 Position is provided with liquid outlet 20, and certain liquid outlet 20 is not necessarily located at second portion 13 upper end, or even not necessarily located at the In two portions 13, such as the length in second portion 13 is relatively small, and in the case of the length in first portion 11 is relatively large, go out Liquid mouth 20 can also be located in first portion 11.Liquid outlet 20 can be integrally formed with second portion 13 or first portion 11, Can be fixed thereon by modes such as welding.

Pumping plant body 1 is not limited to above-mentioned concrete structure, such as straight tube shape pumping plant body, stairstepping pumping plant body in the present invention The present invention is may be applicable to etc. other structures.

As shown in Figure 1A, pit shaft 2 is coaxially disposed within pumping plant body 1 with the pumping plant body 1, and pit shaft 2 is split type Structure, including the lower cylinder portion 21 of interconnection and upper cylinder portion 22, in one embodiment, lower cylinder portion 21 and upper cylinder portion 22 are to pass through Bolt connection etc. is removably joined together.Drain pipe 25 is communicated with upper cylinder portion 22, drain pipe 25 can be with upper cylinder portion 22 It is integrally formed or is fixed on cylinder portion 22.In some other embodiment, drain pipe 25 can also be communicated in lower cylinder portion 21. Connected between drain pipe 25 and liquid outlet 20 by flexible joint 30.

Referring to Figure 1A and Fig. 2A, Fig. 2 B and Fig. 2 C, Fig. 2A shows top cover 4 and pumping plant body in prefabricated pumping plant shown in Figure 1A 1 exploded view sealed by sealing ring；Fig. 2 B show in prefabricated pumping plant shown in Figure 1A top cover 4 with pumping plant body 1 by close The assembling figure of seal sealing；Fig. 2 C show portion P enlarged drawing in Fig. 2A.

As shown in Figure 1A, top cover 4 is covered on the top end opening of pumping plant body 1.One manhole 40 can be set on top cover 4, with side Convenient to operate personnel or maintenance personal enter pumping plant body 1 by manhole 40, in some embodiments, are provided with and supply in pumping plant body 1 The cat ladder (not shown) of personnel's disengaging or the operating platform (not shown) for facilitating personnel's operation.

As shown in Fig. 2A, Fig. 2 B and Fig. 2 C, top cover 4 can be disc, and combination has been bent to form on the circumferential edge of top cover 4 edge Portion 41, is folded with sealing ring between joint portion 41 and the side wall of pumping plant body 1, and sealing ring is used for top pressure closure 4 and pumping plant body 1.Sealing ring can be a rubber seal 7, it is preferable that the rubber seal 7 includes ring body 71, in ring body 71 Lateral surface is provided with annular relief 72, and annular relief 72 can strengthen sealing property, it is further preferred that rubber seal 7 lug boss 72 is in pawl shape.

Joint portion 41, the side wall of pumping plant body 1 and the rubber seal 7 of top cover 4 can be entered by bolt (not shown) One step is fixed.

As shown in Figure 1A, in one embodiment, prefabricated pumping plant also includes 4 pieces of fixed plates being along the circumferential direction uniformly arranged 23, lower cylinder portion 21 is fixed on pumping plant body 1 by 4 pieces of fixed plates 23.Specifically, the outside of 4 pieces of fixed plates 23 is fixed on In the side wall of pumping plant body 1, the bottom plate 17 for being fixed on pumping plant body 1 of 4 pieces of fixed plates 23 (has the feelings of bottom plate 17 in prefabricated pumping plant Under condition) on, in the case of prefabricated pumping plant is not provided with bottom plate 17, the bottom of 4 pieces of fixed plates 23 can be put down with the bottom face of pumping plant body 1 Together, or it is further secured to the substrate for installing prefabricated pumping plant；The inner side of 4 fixed plates 23 is fixed in lower cylinder portion 21, So, lower cylinder portion 21 is just fixed on pumping plant body 1 by 4 pieces of fixed plates 23.The quantity of fixed plate 23,4 pieces are not limited to, can be with Suitably increased and decreased according to the diameter of prefabricated pumping plant.

As shown in Figure 1A, Figure 1B, Fig. 1 C and Fig. 1 D, pump seat 6 is arranged in pumping plant body 1, and below pit shaft 2, In some other embodiment, pump seat 6 can also be arranged in pit shaft 2.In prefabricated pumping station layout in the case of fixed plate 23, Pump seat 6 can be further secured to the inner side of fixed plate 23.Further, the gap between fixed plate 23 and pump seat 6 is provided with Seal, such as dividing plate etc. made of the material such as sealing strip or reinforced plastic glass fibre, so as to block fixed plate 23 by lower cylinder portion 21 with Space between pumping plant body 1 is separated into an independent flow passage 18 mutually completely cut off (see Fig. 1 D).It is only to correspond to each on pump seat 6 Vertical runner 18 is provided with water hole 65 (see Figure 1A), is dived under water with enabling fluid to enter by the water hole 65 in pump seat 6 to reach The liquid sucting port of pump 3.Immersible pump 3 can be installed on pump seat 6, and immersible pump 3 can be axial-flow pump, mixed-flow pump or tubular through flow pump.

Referring to Fig. 4 A to Fig. 4 E, Fig. 4 A to Fig. 4 E show each schematic diagram for carrying blue grid 5 in prefabricated pumping plant.Such as Fig. 4 A Shown in Fig. 4 E, the prefabricated embodiment of pumping plant one of the present invention also includes carrying blue grid 5 and is installed on the gate valve 8 for carrying blue grid 5.Carry Blue grid 5, which can slide up and down to, to be installed in pumping plant body 1, for example, the internal upper part of pumping plant body 1 is fixed with support bar 16 (see Fig. 4 D, Fig. 4 E), two parallel guide rails 19 are fixed with support bar 16, carry blue grid 5 and be slidably mounted on described lead On rail 19.Carrying blue grid 5 can then slide along guide rail 19, and top reaches the open top of prefabricated pumping plant, and lower section reaches grid Support base (not shown), to facilitate processing to carry the dirt that blue grid 5 is collected.

Blue grid 5 is carried in a box shape or in a blue sub- shape, if its have larger-size grid water inlet 51 and The less grid delivery port 52 of dry size.Fluid enters the process flowed out again by some grid delivery ports 52 by grid water inlet 51 In, larger-size debris such as stone, branch etc., which are intercepted at, in fluid carries blue grid 5.

Referring to Fig. 3 A to Fig. 3 E, Fig. 3 A to Fig. 3 E show each schematic diagram of the gate valve 8 in the prefabricated pumping plant shown in Figure 1A. As shown in Fig. 3 A to Fig. 3 E, gate valve 8 includes backboard 81, the panel 82 of parallel backboard 81, side wall 86 and flashboard 84.The He of backboard 81 The middle part of panel 82 offers sluice gate 83, and side wall 86 connects the left and right sides and bottom side of backboard 81 and panel 82, the He of backboard 81 Formed with opening between the top side of panel 82, sluice gate is blocked so that flashboard 84 is inserted between backboard 81 and panel 82 from the opening 83, further, in order to facilitate flashboard 84 into and out the bottom both sides of flashboard 84 have lead angle.

In this embodiment, gate valve 8 also includes the connecting cylinder 85 set around sluice gate 83, and one end of connecting cylinder 85 is fixed In panel 82, the other end, which is fixed on, carries blue grid 5, and sluice gate 83 is corresponding with grid water inlet 51, by inserting or pull out flashboard 84 can open or close the grid water inlet 51 for carrying blue grid 5.

In other embodiment, gate valve 8 can also be sealedly attached to inlet 10 simultaneously, such as gate valve 8 passes through Flange, sealing gasket are connected to inlet 10 by flexible joint, in the case of this kind, gate valve 8 also have be switched on or off into The effect of water.In addition, gate valve 8 can also only be sealedly attached to inlet 10, and it is not connected to carry blue grid 5.

The utility model pumping plant is not only applicable to sewage transport field, rainwater transportation art, lake water, river, surface water, The raw water such as underground water field, it could be applicable to other fields for needing trandfer fluid.

In embodiment of above may use relativity term, such as "above" or "below", to describe icon group Relativeness of the part for another component.It is appreciated that, if making it turn upside down the device upset of icon, is described " under " component will turn into " on " component.Term "one", " one ", "the", " described " and " at least one " to Expression exist one or more elements/part/etc..Term "comprising", " comprising " and " having " are representing open What is be included looks like and refers to other part etc. also may be present in addition to the part listed.In addition, power Term " first ", " second " in sharp claim etc. only use as mark, are not the numerical limits to its object.

It should be appreciated that the utility model be not limited in its application to set forth herein part detailed construction and arrangement Mode.The utility model can have other embodiment, and can realize and perform in many ways.Aforesaid deformation shape Formula and modification fall in the scope of the utility model.It should be appreciated that the utility model disclosed and defined herein prolongs Text and/or drawings are reached to mention or all alternative combinations of two or more obvious independent features.It is all this A little different combinations form multiple alternative aspects of the present utility model.Embodiment as described herein illustrates to become known for reality Existing best mode of the present utility model, and those skilled in the art will be enable to utilize the utility model.

Claims (21)

1. a kind of pumping plant, including pumping plant body (1), be connected to the pumping plant body (1) inlet (10) and liquid outlet (20), The pit shaft (2) that is arranged in the pumping plant body (1), it is connected between the pit shaft (2) and the liquid outlet (20) and goes out liquid Manage (25), it is characterised in that the pit shaft (2) is split-type structural, and it includes lower cylinder portion (21) and is connected to the lower cylinder portion (21) upper cylinder portion (22), wherein the drain pipe (25) is communicated in the upper cylinder portion (22)；The pumping plant is also included circumferentially At least two fixed plates (23) that direction is uniformly arranged, the lower cylinder portion (21) are fixed by least two pieces fixed plates (23) In on the pumping plant body (1).

2. pumping plant as claimed in claim 1, it is characterised in that the upper cylinder portion (22) is removably attachable to the lower cylinder portion (21)。

3. pumping plant as claimed in claim 1, it is characterised in that the drain pipe (25) is integrally formed with the upper cylinder portion (22) Or it is fixedly connected on the upper cylinder portion (22).

4. pumping plant as claimed in claim 1, it is characterised in that the pumping plant also include being arranged at below the pit shaft (2) or Pump seat (6) in the pit shaft (2).

5. pumping plant as claimed in claim 1, it is characterised in that be at least fixed on the outside of two pieces of fixed plates (23) described Pumping plant body (1), bottom is concordant with pumping plant body (1) bottom face or is fixed on the bottom plate of the pumping plant body (1) (17) on, the lower cylinder portion (21) is fixed on the inner side of at least two pieces fixed plates (23).

6. pumping plant as claimed in claim 5, it is characterised in that the pumping plant also include being arranged at below the pit shaft (2) or Pump seat (6) in the pit shaft (2), the pump seat (6) is arranged at below the lower cylinder portion (21), and is fixed at least two pieces of institutes State the inner side of fixed plate (23).

7. pumping plant as claimed in claim 6, it is characterised in that the seam between the fixed plate (23) and the pump seat (6) Gap is provided with seal, so as to which at least two pieces of fixed plates (23) are by between the lower cylinder portion (21) and the pumping plant body (1) Space be separated at least two independent flow passages mutually completely cut off (18), correspond to each described independence on the pump seat (6) Runner (18) is provided with water hole (65).

8. pumping plant as claimed in claim 1, it is characterised in that the pumping plant body (1) also includes first be relatively large in diameter Portion (11), it is connected to first portion (11) and tapered portion (12) that diameter tapers into and is connected to the tapered portion (12) Less second portion (13) of diameter, the tapered portion (12) are fixed with auxiliary supports (24).

9. such as the pumping plant any one of claim 1-8, it is characterised in that the liquid outlet (20) and the drain pipe (25) flexible joint (30) is provided between.

10. such as the pumping plant any one of claim 1-8, it is characterised in that described pumping plant is also described including being covered on The top cover (4) of pumping plant body (1) top end opening, sealing ring is provided between the top cover (4) and the pumping plant body (1).

11. pumping plant as claimed in claim 10, it is characterised in that the sealing ring is rubber seal (7), and it includes annular Body (71), annular relief (72), the top cover (4), the pumping plant are provided with the lateral surface of the ring body (71) Body (1) and the rubber seal (7) are fixed with bolt.

12. pumping plant as claimed in claim 11, it is characterised in that the lug boss (72) of the rubber seal (7) is in pawl Shape.

13. such as the pumping plant any one of claim 1-8, it is characterised in that the pumping plant also include carry blue grid (5) and Be installed on the gate valve (8) for carrying blue grid (5), it is described carry blue grid (5) and can slide up and down to be installed on the pumping plant body (1) in；The blue grid (5) that carries has larger-size grid water inlet (51) and the less grid delivery port of some sizes (52)；The gate valve (8) includes flashboard (84), and the flashboard (84) can open or close the grid for carrying blue grid (5) Water inlet (51), under the pumping plant working condition, the gate valve (8) is sealedly attached to the inlet (10).

14. pumping plant as claimed in claim 13, it is characterised in that the gate valve (8) also includes backboard (81), the parallel back of the body The panel (82) and side wall (86) of plate (81), wherein the side wall (86) connects the backboard (81) and the panel (82) Sluice gate (83), sluice gate (83) and institute are offered in the middle part of the left and right sides and bottom side, the backboard (81) and the panel (82) State that grid water inlet (51) is corresponding, the top side of the backboard (81) and the panel (82) is opening, for the flashboard (84) inserted from the opening between the backboard (81) and the panel (82) and block the sluice gate (83).

15. pumping plant as claimed in claim 14, it is characterised in that the backboard (81) of the gate valve (8) is fixed on described Carry blue grid (5).

16. pumping plant as claimed in claim 14, it is characterised in that the gate valve (8) also includes setting around the sluice gate (83) The panel (82) is fixed in the connecting cylinder (85) put, one end of the connecting cylinder (85), and the other end, which is fixed on, described carries blue lattice Grid (5).

17. such as the pumping plant any one of claim 1-8, it is characterised in that the pumping plant also include being installed on it is described enter The gate valve (8) of liquid mouth (10) end, the gate valve (8) include flashboard (84), the flashboard (84) can open or close it is described enter Liquid mouth (10).

18. pumping plant as claimed in claim 17, it is characterised in that the gate valve (8) also includes backboard (81), the parallel back of the body The panel (82) and side wall (86) of plate (81), wherein the side wall (86) connects the backboard (81) and the panel (82) The left and right sides and bottom side, offer sluice gate (83), the sluice gate in the middle part of the backboard (81) and the panel (82) (83) corresponding with the inlet (10), the top side of the backboard (81) and the panel (82) is opening, for the lock Plate (84) inserts between the backboard (81) and the panel (82) from the opening and blocks the sluice gate (83).

19. the pumping plant as described in claim 4,6 or 7, it is characterised in that the pumping plant also includes being installed on the pump seat (6) Immersible pump (3).

20. such as the pumping plant any one of claim 1-3,5 and 8, it is characterised in that the pumping plant also includes being arranged at institute State pit shaft (2) lower section or the pump seat (6) in the pit shaft (2) and the immersible pump (3) for being installed on the pump seat (6).

21. such as the pumping plant any one of claim 1-8, it is characterised in that the pumping plant is prefabricated pumping plant.