CN109185173A

CN109185173A - A kind of wastewater treatment sampling extraction equipment

Info

Publication number: CN109185173A
Application number: CN201811084450.8A
Authority: CN
Inventors: 高青
Original assignee: 高青
Current assignee: Jiaxing Nottingham Industrial Design Co.,Ltd.
Priority date: 2018-09-18
Filing date: 2018-09-18
Publication date: 2019-01-11
Anticipated expiration: 2038-09-18
Also published as: CN109185173B

Abstract

The invention discloses a kind of wastewater treatments to sample extraction equipment, including apparatus main body, described device main body includes shell, water inlet pipe and cup dolly, the side of the shell is provided with control cabinet at the position of close over, and the upper end of shell is provided with upper cover, the upper surface of the upper cover is fixedly installed with hanging ring at the position of two sides, cable is provided at position between hanging ring described in two adjacent groups, the upper end middle position of the water inlet pipe is provided with threaded connection mouth, and the junction for being threadedly coupled mouth and water inlet pipe is provided with connecting flange, the threaded connection mouth is fixedly connected by connecting flange with water inlet pipe.To sum up, the beneficial effects of the present invention are: wastewater treatment sampling extraction equipments to pass through the cup dolly and flow channel type impeller being equipped with, and provides safety guarantee to the operation of equipment, with excellent performance of anti-blockage, the conveying fluency of equipment is improved, structure is simple, easy to use.

Description

A kind of wastewater treatment sampling extraction equipment

Technical field

The present invention relates to water sampling apparatus fields, and in particular to a kind of wastewater treatment sampling extraction equipment.

Background technique

Extraction equipment is that a kind of pair of liquid carries out the equipment for extracting sampling；Existing extraction equipment is deposited during use In certain drawbacks, understructure design is simple, poor with the structural soundness of the pump housing, when equipment is operated because of pedestal shakiness It is easy to cause and tumbles, bring security risk to the operation of equipment；Single piece type Impeller Design can not form different runners, it is difficult to Effectively sewage of the conveying containing solids, performance of anti-blockage is poor, reduces the conveying fluency of equipment, makes to the use of extraction equipment At certain influence；When carrying out water sample extraction, the sampling of different depth water flow can not be accurately carried out, and especially in water When the oil-containing of face, oil in the sample of acquisition is often made excessively, normal sample to be influenced, for this purpose, it is proposed that a kind of wastewater treatment is adopted Sample extraction equipment.

Summary of the invention

The object of the invention is that a kind of wastewater treatment sampling extraction equipment is provided to solve the above-mentioned problems, this hair The bright flow channel type impeller that can use shunts the sewage for entering the pump housing, solves the blockage problem of the pump housing, effectively improves and set Standby conveying fluency, it is easy to use.

The present invention through the following technical solutions to achieve the above objectives:

A kind of wastewater treatment sampling extraction equipment, comprising:

Apparatus main body, described device main body include shell, water inlet pipe and cup dolly, and the position of close over is leaned in the side of the shell The place of setting is provided with control cabinet, and the upper end of shell is provided with upper cover, and the upper surface of the upper cover is solid at the position of two sides Dingan County is equipped with hanging ring, is provided with cable, the upper end middle position of the water inlet pipe at the position between hanging ring described in two adjacent groups Place is provided with threaded connection mouth, and the junction for being threadedly coupled mouth and water inlet pipe is provided with connecting flange, the threaded connection mouth It is fixedly connected by connecting flange with water inlet pipe, the upper surface of the cup dolly is fixedly installed with fixing seat, and cup dolly Lower end surface be fixedly installed with circular base plate, the lower end of the circular base plate is provided with Rubber shock-absorbing pad；

Main body is rotated, the rotation main body includes the pump housing, and the side middle position of the pump housing is provided with water outlet, the pump The inside of body is provided with flow channel type impeller at the position of bottom end, and middle position offers connection on the flow channel type impeller Hole, and the upper surface of flow channel type impeller has been placed equidistant with six roots of sensation bending around the surrounding of connecting hole, the flow channel type impeller it is upper End is provided with connecting shaft, and the upper end of connecting shaft is provided with rotation axis, and the junction of the rotation axis and connecting shaft is provided with connection The outer surface of axis device, the rotation axis is provided with motor at the position on top.

Preferably, the fixing seat and the connection type of cup dolly are welding, and the shape of fixing seat is circle.

Preferably, the front end face of the control cabinet is provided with digital display screen, and control cabinet at the position of close over Front end face function button and mode key are provided with below digital display screen.

Preferably, the connection type of the bending and flow channel type impeller is welding, and the arrangement shape of bending different location At different runners.

Preferably, the outer surface of the cable is provided with sheath, and cable and shell are electrically connected.

Preferably, the lower end of the hanging ring is provided with attachment base, and the connection type of hanging ring and attachment base is welding.

Preferably, further include:

Alarm device is arranged in the control cabinet；

Feeler lever is hollow setting；The feeler lever is internally provided with the floating ball on can bubbling through the water column, inside the feeler lever, institute State the first touching switch for being provided with and being moved above floating ball along the feeler lever inner wall；First touching switch is in closure The alarm device is triggered to sound an alarm；Along the longitudinal extension of the feeler lever, removably set on the outer wall of the feeler lever It is equipped with conduit, the upper and lower ends opening of the conduit, and the bottom of the conduit is provided with opening the bottom end of the conduit The lid of mouth covering；The upper surface of the lid is provided with the second touching switch, and second touching switch controls the lid Opening and closing；

Drinking-water pipe comprising supervisor and transfer tube, the supervisor are plugged in the conduit；The transfer tube is set as U-shaped, and One end is connected to the water inlet pipe by the threaded connection mouth, and the other end is connected to the top of the supervisor.

Preferably, the feeler lever includes the 1 foundation bar, 1 main strut and several branch bars of regular length；The bottom It is mutually screwed on from the bottom to top between bar, branch bar and main strut by the way that the screw thread of respective end is arranged in；The bottom end of the bottom bar is sealed It closes, and on the side wall close to the bottom end of the bottom bar, offers multiple through-holes along the longitudinal extension of the bottom bar；Along institute The longitudinal extension for stating main strut is provided with scale on the outer wall of the main strut, and sliding rail, the cunning are provided on inner wall The bottom of rail is provided with slide fastener, and the first end of the slide fastener extends to the outside of the main strut, and first touching switch connects It is connected to the second end of the slide fastener, is moved down in first touching switch with driving when the slide fastener is slided along the sliding rail It is dynamic.

Preferably, the conduit is set as except close to the flexible flexible hose in bottom end side, and bottom end with it is described The bottom surface of feeler lever is concordant, and top is higher than the top of the feeler lever；The lid is made of the first lid and the second lid, and described One lid is fixedly connected with the bottom end of the conduit, and cover the conduit bottom end opening 1/2, the one of second lid End by can along the edge of first lid turn down in a manner of it is hinged with the edge of first lid, second lid it is another One end is provided with electromagnet, and the bottom edge of the conduit is adsorbed in by the electromagnet, with total with first lid It is covered with by the bottom end of the conduit；The electromagnet is connected to second touching switch, and in second touching switch When closure, power off the electromagnet.

Using the above scheme, when in use, cable is connected into power supply first, the depth sampled as needed determines branch bar Radical, bottom bar, branch bar and main strut are connected with each other to the feeler lever of composition corresponding length, floating ball is placed on inside feeler lever, adjusts The length for saving position to feeler lever bottom to the second touching switch of the second touching switch is to need the depth of the water sampled, by conduit It is mounted on the side of feeler lever, is then protruded into feeler lever in water to be sampled by bottom end, with the raising of water level in feeler lever, floating ball is held Continuous to float, until the first touching switch above it is touched on top, the first touching switch closure stops so that alarm device sounds an alarm Feeler lever continues to extend downwardly into the water surface, and then drinking-water pipe is connected on the threaded connection mouth on water inlet pipe, secondly on control cabinet It is set by function button and mode key, drinking-water pipe is extended downwardly into the water surface hereinafter, touching to drinking-water pipe along conduit When the second touching switch of conduit bottom end, confirmation key is pressed, the motor of enclosure interior is operated at this time, and motor operates same When drive rotation axis rotation, rotation axis rotation drive lower end flow channel type impeller rotated, flow channel type impeller high speed revolve Lift caused by turning continuously presses upwards on water, and water is made to enter the pump housing along water inlet pipe, is finally discharged from water outlet, stream Road formula impeller is a curved runner from the inlet to the outlet, forms different stream according to the bending that six different locations are distributed Road is suitable for conveying containing large granular impurity either long stapled liquid, has excellent performance of anti-blockage, ensure the pump housing Fluency is conveyed, cup dolly is made of fixing seat, circular base plate, and structural stability is good, and Rubber shock-absorbing pad is transported in equipment As when play damping firm effect, prevent equipment because tumbling caused by pedestal shakiness, connecting shaft by shaft coupling and rotation axis connection, Connecting flange plays connection function, can be sling equipment by the hanging ring on upper lid, easy to use.

To sum up, the beneficial effects of the present invention are: the wastewater treatments to sample extraction equipment, by the cup dolly being equipped with, Itself and fixing seat and Rubber shock-absorbing pad, reinforce its structural soundness with the pump housing, and it is firm that damping is played when equipment is operated Effect, prevents equipment because tumbling caused by pedestal shakiness, provides safety guarantee to the operation of equipment, passes through the flow channel type leaf being equipped with Wheel forms different runners according to the bending that six different locations are distributed, can effectively convey the sewage containing solids, have Excellent performance of anti-blockage improves the conveying fluency of equipment, and structure is simple, easy to use.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is overall structure view of the invention；

Fig. 2 is local interior's topology view of Fig. 1 middle pump body of the invention；

Fig. 3 is the partial enlarged view of flow channel type impeller in Fig. 2 of the invention；

Fig. 4 is the partial enlarged view of cup dolly in Fig. 1 of the invention；

Fig. 5 is the topology view of feeler lever and drinking-water pipe of the invention；

Fig. 6 is the topology view of lid of the invention.

The reference numerals are as follows:

1, shell；2, the pump housing；3, water outlet；4, cup dolly；5, control cabinet；6, upper cover；7, hanging ring；8, cable；9, water inlet pipe； 10, connecting flange；11, it is threadedly coupled mouth；12, flow channel type impeller；13, connecting shaft；14, shaft coupling；15, rotation axis；16, electric Machine；17, bending；18, connecting hole；19, fixing seat；20, circular base plate；21, Rubber shock-absorbing pad；22, feeler lever；23, floating ball；24, First touching switch；25, conduit；26, lid；27, the second touching switch；28, it is responsible for；29, transfer tube；30, bottom bar；31, main Strut；32, branch bar；33, slide fastener；34, the first lid；35, the second lid；36, electromagnet.

Specific embodiment

To keep the purpose of the present invention, technical solution and advantage clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.

Referring to shown in Fig. 1-Fig. 6, the present invention provides a kind of wastewater treatments to sample extraction equipment, comprising:

Apparatus main body, described device main body include shell 1, water inlet pipe 9 and cup dolly 4, and close over is leaned in the side of the shell 1 Position at be provided with control cabinet 5, and the upper end of shell 1 is provided with upper cover 6, the position of the upper surface of the upper cover 6 close to two sides The place of setting is fixedly installed with hanging ring 7, and cable 8 is provided at the position between hanging ring 7 described in two adjacent groups, the water inlet pipe 9 Upper end middle position, which is provided with, is threadedly coupled mouth 11, and the junction for being threadedly coupled mouth 11 and water inlet pipe 9 is provided with connection method Orchid 10, the threaded connection mouth 11 are fixedly connected by connecting flange 10 with water inlet pipe 9, and the upper surface of the cup dolly 4 is solid Dingan County is equipped with fixing seat 19, and the lower end surface of cup dolly 4 is fixedly installed with circular base plate 20, the lower end of the circular base plate 20 It is provided with Rubber shock-absorbing pad 21；

Main body is rotated, the rotation main body includes the pump housing 2, and the side middle position of the pump housing 2 is provided with water outlet 3, institute The inside for stating the pump housing 2 is provided with flow channel type impeller 12, middle position on the flow channel type impeller 12 at the position of bottom end Connecting hole 18 is offered, and the upper surface of flow channel type impeller 12 has been placed equidistant with six roots of sensation bending 17 around the surrounding of connecting hole 18, The upper end of the flow channel type impeller 12 is provided with connecting shaft 13, and the upper end of connecting shaft 13 is provided with rotation axis 15, the rotation The junction of axis 15 and connecting shaft 13 is provided with shaft coupling 14, and the outer surface of the rotation axis 15 is arranged at the position on top There is motor 16.

For the functionality for improving extraction equipment, preferably, the connection type of the fixing seat 19 and cup dolly 4 is weldering Connect, and the shape of fixing seat 19 is circle: the front end face of the control cabinet 5 is arranged at the position of close over statistics have shown Screen, and the front end face of control cabinet 5 is provided with function button and mode key below digital display screen；The bending 17 with The connection type of flow channel type impeller 12 is welding, and the arrangement of 17 different location of bending forms different runners；The cable 8 Outer surface is provided with sheath, and cable 8 and shell 1 are electrically connected；The lower end of the hanging ring 7 is provided with attachment base, and hanging ring 7 with The connection type of attachment base is welding.

The water quality of different depth is accurately sampled for convenience, preferably, further include:

Alarm device is arranged in the control cabinet；

Feeler lever 22 is hollow setting；The feeler lever 22 is internally provided with the floating ball 23 on can bubbling through the water column, in the feeler lever 22 Inside, the top of the floating ball 23 are provided with the first touching switch 24 that can be moved along 23 inner wall of feeler lever；First touching Switch 24 is touched to trigger the alarm device in closure and sound an alarm；Along the longitudinal extension of the feeler lever 22, in the feeler lever Conduit 25 is removably provided on 22 outer wall, the upper and lower ends of the conduit 25 are open, and in the bottom of the conduit 25 It is provided with the lid 26 of the opening covering of the bottom end of the conduit 25；The upper surface of the lid 26 is provided with the second touching and opens 27 are closed, second touching switch 27 controls the opening and closing of the lid 26；

Drinking-water pipe comprising supervisor 28 and transfer tube 29, the supervisor 28 are plugged in the conduit 25；The transfer tube 29 is set It is set to U-shaped, and one end is connected to the water inlet pipe 9 by the threaded connection mouth 11, the other end is connected to the supervisor's 28 Top.

Preferably, the feeler lever 22 includes 1 foundation bar, 30,1 main struts 31 and several branch bars of regular length 32；It is mutually screwed on from the bottom to top between the bottom bar 30, branch bar 32 and main strut 31 by the way that the screw thread of respective end is arranged in；Institute The bottom end closure of bottom bar 30 is stated, and on the side wall close to the bottom end of the bottom bar 30, along longitudinal extension side of the bottom bar 30 To offering multiple through-holes；Along the longitudinal extension of the main strut 31, quarter is provided on the outer wall of the main strut 31 It spends, is provided with sliding rail on inner wall, the bottom of the sliding rail is provided with slide fastener 33, and the first end of the slide fastener 33 extends to the master The outside of strut 31, first touching switch 24 are connected to the second end of the slide fastener 33, in the slide fastener 33 along described When sliding rail slides, first touching switch 24 is driven to move up and down.

Preferably, the conduit 25 is set as except the close flexible flexible hose in bottom end side, and bottom end and institute The bottom surface for stating feeler lever 22 is concordant, and top is higher than the top of the feeler lever；The lid 26 is by the first lid 34 and the second lid 35 Composition, first lid 34 is fixedly connected with the bottom end of the conduit, and cover the conduit bottom end opening 1/2, institute State edge of the one end of the second lid 35 in a manner of it can turn down along the edge of first lid 34 with first lid 34 Hingedly, the other end of second lid 34 is provided with electromagnet 36, and is adsorbed in the conduit 25 by the electromagnet 36 Bottom edge, the bottom end of the conduit 25 to be covered jointly with first lid 35；The electromagnet 36 is connected to institute The second touching switch 27 is stated, and in second touching switch 27 closure, powers off the electromagnet 36.

Using the above scheme, when in use, cable 8 is connected into power supply first, the depth sampled as needed determines branch Bottom bar 30, branch bar 32 and main strut 31, are connected with each other the feeler lever 22 of composition corresponding length by the radical of bar 32, and floating ball 23 is placed Inside feeler lever 22, the length for adjusting position to 22 bottom of feeler lever to the second touching switch 27 of the second touching switch 27 is to need Conduit 25 is mounted on the side of feeler lever 22 by the depth of the water of sampling, then protrudes into feeler lever 22 in water to be sampled by bottom end, With the raising of water level in feeler lever 22, floating ball 23 persistently floats, until the first touching switch 24 above it, the first touching are touched in top Switch 24 is closed, so that alarm device sounds an alarm, is stopped feeler lever 22 and is continued to extend downwardly into the water surface, then by drinking-water pipe be connected into On threaded connection mouth 11 on water pipe 9, is secondly set, will be drawn water by function button and mode key on control cabinet 5 Pipe along conduit extends downwardly into the water surface hereinafter, when drinking-water pipe touches the second touching switch 27 of conduit bottom end, press confirmation by Key, the motor 16 inside shell 1 is operated at this time, drives rotation axis 15 to rotate while motor 16 operates, and 15 turns of rotation axis The dynamic flow channel type impeller 12 for driving lower end is rotated, and the lift caused by the high speed rotation of flow channel type impeller 12 is successive Ground presses upwards on water, make water along water inlet pipe 9 enter the pump housing 2, finally from water outlet 3 be discharged, flow channel type impeller 12 from entrance to Outlet is a curved runner, forms different runners according to the bending 17 that six different locations are distributed, contains suitable for conveying There is large granular impurity either long stapled liquid, there is excellent performance of anti-blockage, ensures the conveying fluency of the pump housing 2, circle Shape pedestal 4 is made of fixing seat 19, circular base plate 20, and structural stability is good, from Rubber shock-absorbing pad 21 is when equipment is operated To damping firm effect, prevent equipment because tumbling caused by pedestal shakiness, connecting shaft 13 is connect by shaft coupling 14 with rotation axis 15, Connecting flange 10 plays connection function, can be sling equipment by the hanging ring 7 in upper cover 6, easy to use, by the way that feeler lever is arranged It being made of bottom bar, branch bar and main strut, the depth that can according to need sampling freely combines the length of feeler lever, meanwhile, just In the storage of feeler lever, conduit be set as the flexible hose in addition to bottom end also can it is convenient for collecting and carry, and lid be set as by First lid and the second lid composition, after protruding into the water surface and reaching the depth for needing to sample, the second touching switch is closed so that electricity The magnetic force of magnet disappears, and the second lid flips up under the pressure of bottom hydraulic pressure, so that bottom water flow enters catheter interior, To ensure that the drinking-water pipe for stretching to conduit bottom can extract water at respective depth as water sample.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims

1. a kind of wastewater treatment samples extraction equipment characterized by comprising

Apparatus main body comprising close over is leaned in shell (1), water inlet pipe (9) and cup dolly (4), the side of the shell (1) It is provided at position control cabinet (5), and the upper end of shell (1) is provided with upper cover (6), the upper surface of the upper cover (6) is close to two It is fixedly installed at the position of side hanging ring (7), cable (8), institute is provided at the position between hanging ring (7) described in two adjacent groups The upper end middle position for stating water inlet pipe (9), which is provided with, is threadedly coupled mouth (11), and is threadedly coupled mouth (11) and water inlet pipe (9) Junction is provided with connecting flange (10), and the threaded connection mouth (11) connects by the way that connecting flange (10) and water inlet pipe (9) are fixed It connects, the upper surface of the cup dolly (4) is fixedly installed with fixing seat (19), and the lower end surface of cup dolly (4) is fixedly mounted Have circular base plate (20), the lower end of the circular base plate (20) is provided with Rubber shock-absorbing pad (21)；

Rotate main body comprising the side middle position of the pump housing (2), the pump housing (2) is provided with water outlet (3), the pump The inside of body (2) is provided with flow channel type impeller (12) at the position of bottom end, middle position on the flow channel type impeller (12) Place offers connecting hole (18), and surrounding of the upper surface of flow channel type impeller (12) around connecting hole (18) has been placed equidistant with the six roots of sensation The upper end of bending (17), the flow channel type impeller (12) is provided with connecting shaft (13), and the upper end of connecting shaft (13) is provided with and turns Moving axis (15), the rotation axis (15) and the junction of connecting shaft (13) are provided with shaft coupling (14), the rotation axis (15) Outer surface is provided with motor (16) at the position on top.

2. wastewater treatment samples extraction equipment according to claim 1, it is characterised in that: the fixing seat (19) and circular base The connection type of seat (4) is welding, and the shape of fixing seat (19) is circle.

3. wastewater treatment samples extraction equipment according to claim 1, it is characterised in that: the front end face of the control cabinet (5) Digital display screen is provided at the position of close over, and the front end face of control cabinet (5) is arranged close to the lower section of digital display screen Functional key and mode key.

4. wastewater treatment samples extraction equipment according to claim 1, it is characterised in that: the bending (17) and flow channel type leaf The connection type for taking turns (12) is welding, and the arrangement of bending (17) different location forms different runners.

5. wastewater treatment samples extraction equipment according to claim 1, it is characterised in that: the outer surface of the cable (8) is set It is equipped with sheath, and cable (8) and shell (1) are electrically connected.

6. wastewater treatment samples extraction equipment according to claim 1, it is characterised in that: the lower end of the hanging ring (7) is arranged There is attachment base, and the connection type of hanging ring (7) and attachment base is welding.

7. wastewater treatment samples extraction equipment according to claim 1, which is characterized in that further include:

Alarm device is arranged in the control cabinet；

Feeler lever (22) is hollow setting；The feeler lever (22) is internally provided with the floating ball on can bubbling through the water column (23), described Feeler lever (22) is internal, and the first touching switch that can be mobile along the feeler lever (23) inner wall is provided with above the floating ball (23) (24)；First touching switch (24) is triggered the alarm device in closure and is sounded an alarm；Along the longitudinal direction of the feeler lever (22) Extending direction is removably provided with conduit (25) on the outer wall of the feeler lever (22), the upper and lower ends of the conduit (25) Opening, and be provided in the bottom of the conduit (25) by the lid (26) of the opening covering of the bottom end of the conduit (25)；Institute The upper surface for stating lid (26) is provided with the second touching switch (27), and second touching switch (27) controls the lid (26) Opening and closing；

Drinking-water pipe comprising supervisor (28) and transfer tube (29), the supervisor (28) are plugged in the conduit (25)；Described turn Adapter tube (29) is set as U-shaped, and one end is connected to the water inlet pipe (9) by the threaded connection mouth (11), other end connection In the top of the supervisor (28).

8. wastewater treatment samples extraction equipment according to claim 7, which is characterized in that the feeler lever (22) includes fixed length 1 foundation bar (30), 1 main strut (31) and several branch bars (32) of degree；The bottom bar (30), branch bar (32) and main branch It is mutually screwed on from the bottom to top between bar (31) by the way that the screw thread of respective end is arranged in；The bottom end closure of the bottom bar (30), and On the side wall of the bottom end of the bottom bar (30), the longitudinal extension along the bottom bar (30) offers multiple through-holes；Edge The longitudinal extension of the main strut (31), scale is provided on the outer wall of the main strut (31), is provided on inner wall Sliding rail, the bottom of the sliding rail are provided with slide fastener (33), and the first end of the slide fastener (33) extends to the main strut (31) Outside, first touching switch (24) are connected to the second end of the slide fastener (33), in the slide fastener (33) along the cunning When rail slides, first touching switch (24) is driven to move up and down.

9. wastewater treatment samples extraction equipment according to claim 7, which is characterized in that the conduit (25) is set as removing and lean on The flexible flexible hose in nearly bottom end side, and bottom end is concordant with the bottom surface of the feeler lever (22), top is higher than the feeler lever Top；The lid (26) is made of the first lid (34) and the second lid (35), and first lid (34) is led with described The bottom end of pipe is fixedly connected, and cover the conduit bottom end opening 1/2, one end of second lid (35) is with can be along institute The mode for stating the edge fold of the first lid (34) and the edge of first lid (34) are hinged, second lid (35) The other end is provided with electromagnet (36), and the bottom edge of the conduit (25) is adsorbed in by the electromagnet (36), with First lid (35) jointly covers the bottom end of the conduit (25)；The electromagnet (36) is connected to second touching It switchs (27), and in second touching switch (27) closure, powers off the electromagnet (36).