CN1727692B

CN1727692B - Bottom valve of draining pump

Info

Publication number: CN1727692B
Application number: CN 200510017657
Authority: CN
Inventors: 高兴超
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-06
Filing date: 2005-06-06
Publication date: 2010-09-08
Anticipated expiration: 2025-06-06
Also published as: CN1727692A

Abstract

The present invention discloses a draining pump bottom valve. It includes filter shell body, non-return valve plate and fixed flange, in which the non-return valve plate is mounted on the upper end surface of fixed flange by means of turning mechanism, and the form of the non-return valve plate is matched with form of water outlet hole positioned in the centre of fixed flange, on the non-return valve plate a spacing mechanism is set to make the rotating angle of non-return valve plate be less than 90deg, and the filter shell body is connected with fixed flange by means of fastening piece.

Description

Bottom valve of draining pump

One. technical field: the present invention relates to a kind of and the matching used one-way valve of draining pump, particularly relate to a kind of bottom valve of draining pump.

Two. background technique: bottom valve is an important component part in the mining areas of mine drainage equipment; the bottom valve that uses is by flap at present; valve body; parts such as filter screen are formed; it is actually the one-way cock of a flap along the bottom valve axial motion; to prevent when the water and the leakage of water when shutting down; when pump operation; form vacuum in the suction sleeve; extraneous air pressure impels flap to open along moving a segment distance on the bottom valve axis; thereby water is extracted out; when water pump shuts down; water in the suction sleeve produces pressure to the flap back side; flap is closed; the bottom valve of this structure is because the opening ways of flap is to move horizontally; and flap is positioned at the center position of runner, and the water that sucks bottom valve is forced on the flap and collides; flow out from the surrounding of flap the friction back, and resistance is very big; increase the net positive suction head in the suction sleeve, thereby influenced the suction lift of water pump.At this situation, the bottom valve that people's development makes new advances, (notification number is CN2084113U as Chinese patent, application number is 91212196.3) a kind of " Energy saving foot valve " disclosed, it comprises valve, three parts of valve body and valve seat, valve is by valve gap, coupling shaft, valve pad and pressing plate are formed, valve gap is provided with equilibrium block and is connected axis hole, pressing plate is installed in the valve pad on the valve gap by screw, valve gap is installed on the axle bed of valve body and can sways by coupling shaft, the cavity that the equilibrium block when valve body is provided with valve opening and closing on the valve gap sways, and valve seat is provided with water intake, filter screen and axle bed, valve body is connected with valve seat with pad by bolt, it reduces the friction of water and valve, has improved the suction lift of water pump, still, its valve body is owing to have the cavity that equilibrium block rotates, therefore its out-of-shape is difficult for making, and volume is big simultaneously, Heavy Weight, be unfavorable for installing and using, cost is higher.And for example (notification number is CN2118176U to Chinese patent; application number is 92214211.4) a kind of " Centrifugal water pump recloser bottom valve " disclosed; it has a double flowing tube and a rotating flap; when drawing water; flap on the end face of the small flow channels of double flowing tube, forms the state that draws water that is similar to without bottom valve, during shutdown by suction; utilize the impact force of recirculation water through small flow channels; flap is gone back to, force it to close at last, when it draws water; flap is similar to erectility; the resistance of water is little, but the complex structure of its double flowing tube is difficult for making; use the impact force of small flow channels water to close flap in addition; sensitivity is not high, exists volume big simultaneously yet; Heavy Weight is unfavorable for installing and using; the defective that cost is higher; in addition, because the coal grain and the silt in coal mining district are more, stop up easily; inflexible phenomenon appears rotating in this flap easily, and then formation is leaked.

Three. the content of invention:

Purpose of the present invention: overcome the defective of prior art, provide a kind of simple in structure, make and installation, cost is lower, obturation effect is good bottom valve of draining pump easily.

Technological scheme of the present invention: a kind of bottom valve of draining pump, contain and filter housing, check valve sheet and fastening flange, wherein check valve sheet is installed in the upper-end surface of fastening flange by rotating mechanism, the shape of the osculum in the middle of the shape of check valve sheet and the fastening flange is complementary, on check valve sheet, be provided with position-limit mechanism, the angle of swing that makes check valve sheet is filtered housing and is connected with fastening flange by fastening piece less than 90 °.

Described filtration housing is provided with the water inlet, and the cross section of this water inlet is circular, or is polygonal, or is oval.

Described filtration housing is cylindrical housings or hemispherical shell or the semielliptical shape housing that the upper end has adpting flange.

Described rotating mechanism is a hinge, or is rotating shaft and axle sleeve structure, or is hinge; Described position-limit mechanism is a position limit pin, or is position-limited lever, or is limiting board, and an end of position-limit mechanism is fixed on the check valve sheet, and its other end contacts with a side inwall of the intake pipe of draining pump, the degree that the length decision check valve sheet of position-limit mechanism is opened.

Beneficial effect of the present invention:

1. check valve sheet of the present invention is installed in the upper-end surface of fastening flange by rotating mechanism, on check valve sheet, be provided with position-limit mechanism, the angle of swing that makes check valve sheet is less than 90 °, filtering housing is connected with fastening flange by fastening piece, its amount of parts is few and simple in structure, therefore easily make, cost is lower, simultaneously because its volume is little, in light weight, so easy to use and install.

2. filtration housing of the present invention is provided with circular water inlet, and its diameter can be set as required, and it has overcome the strip hole that existing bottom valve adopted, make bulk foreign material such as wooden unit be difficult for entering in the bottom valve, thereby avoided the obstruction draining pump, so its inflow is big, improves the suction lift of draining pump.

3. good seal performance of the present invention, when the height of water is big, the sealing gasket of existing bottom valve very easily damages, cause the surface of contact injustice on the contrary, appearance is leaked, and the present invention adopts check valve sheet directly to contact with fastening flange, under the effect of big pressure, uneven phenomenon can not appear in surface of contact, so good sealing effect.

4. long service life of the present invention can adopt hot rolling steel plate to make, and intensity is big, and is not fragile, is convenient to maintenance simultaneously, and its operating cost is low.

5. the present invention both had been applicable to the clear water discharging, was applicable to the mine drainage underground again, particularly was applicable to the mine drainage that drop is bigger, had favorable economic benefit after the popularization.

Four. description of drawings:

Fig. 1 is one of structural representation of bottom valve of draining pump; Fig. 2 is the plan view of Fig. 1;

Fig. 3 be bottom valve of draining pump structural representation three; Fig. 4 is the plan view of Fig. 3;

Fig. 5 be bottom valve of draining pump structural representation five; Fig. 6 is the plan view of Fig. 5;

Fig. 7 be bottom valve of draining pump structural representation seven; Fig. 8 is the plan view of Fig. 7.

Five. embodiment:

Embodiment one: referring to Fig. 1 and Fig. 2, among the figure, the check valve sheet 5 of bottom valve of draining pump is installed in the upper-end surface of fastening flange 4 by rotating shaft and axle sleeve structure 3, the shape of the osculum 7 in the middle of the shape of check valve sheet 5 and the fastening flange 4 is complementary, the shape approximation of this check valve sheet 5 is the shape of a table tennis bat, on check valve sheet 5 upper-end surfaces, be fixed with a position-limited lever 6, one end of position-limited lever 6 is fixed on the check valve sheet 5, its the other end contacts with a side inwall of the intake pipe of draining pump, the degree that the length decision check valve sheet of position-limited lever 6 is opened, the angle of swing that makes check valve sheet 5 is less than 90 °, filtration housing 2 has the cylindrical housings of adpting flange for the upper end, be evenly equipped with circular water inlet 8 on its cylndrical surface and the bottom surface respectively, filter housing 2 and be connected with fastening flange 4 with mounting hole 1 by fastening piece.

During use, by bolt and mounting hole 1 bottom valve is installed on the intake pipe of draining pump, in water pump, pour into diversion, because the pressure of deadweight and water, check valve sheet 5 contacts with the upper-end surface sealing of fastening flange 4, on its surface of contact, carry out grinding and cure process, increase its sealing and wear resistance, start draining pump, form vacuum in the draining pump, external air pressure forces water to enter and filters housing 2, and overcome the gravity of check valve sheet 5, enter draining pump, at this moment, the upper end of position-limited lever 6 contacts with a side inwall of the intake pipe of draining pump.When draining pump quit work, check valve sheet 5 contacted with the upper-end surface sealing of fastening flange 4 under the effect of recirculation water, can not leak, and is convenient to start next time.

Embodiment two: referring to Fig. 3 and Fig. 4, numbering is identical with embodiment one among the figure, and the meaning of representative is identical, its working procedure is basic identical, something in common does not repeat, and difference is: the osculum 7 in the middle of the fastening flange 4 be shaped as circle, position-limit mechanism is a limiting board 6.

Embodiment three: referring to Fig. 5 and Fig. 6, numbering is identical with embodiment one among the figure, the meaning of representative is identical, its working procedure is basic identical, something in common does not repeat, difference is: filter housing 2 for the upper end has the hemispherical shell of adpting flange, be evenly equipped with cylindrical water inlet 8 on its hemisphere face.

Embodiment four: referring to Fig. 7 and Fig. 8, numbering is identical with embodiment two among the figure, and the meaning of representative is identical, its working procedure is basic identical, something in common does not repeat, and difference is: the osculum 7 in the middle of the fastening flange 4 be shaped as circle, position-limit mechanism is a limiting board 6.

Filter the shape in the enterprising water hole of housing and the structural type of rotating mechanism by change, can form many embodiments, be common version of the present invention, do not describe in detail one by one at this.

Claims

1. bottom valve of draining pump, contain and filter housing, check valve sheet and fastening flange, it is characterized in that: check valve sheet is installed in the upper-end surface of fastening flange by rotating mechanism, the shape of the osculum in the middle of the shape of check valve sheet and the fastening flange is complementary, on check valve sheet, be provided with position-limit mechanism, the angle of swing that makes check valve sheet is filtered housing and is connected with fastening flange by fastening piece less than 90 °.

2. bottom valve of draining pump according to claim 1 is characterized in that: described filtration housing is provided with the water inlet, and the cross section of this water inlet is circular, or is polygonal, or is oval.

3. bottom valve of draining pump according to claim 2 is characterized in that: described filtration housing is cylindrical housings or hemispherical shell or the semielliptical shape housing that the upper end has adpting flange.

4. according to claim 1 or 2 or 3 described bottom valve of draining pump, it is characterized in that: described rotating mechanism is a hinge, or is rotating shaft and axle sleeve structure, or is hinge; Described position-limit mechanism is a position limit pin, or is position-limited lever, or is limiting board, and an end of position-limit mechanism is fixed on the check valve sheet, and its other end contacts with a side inwall of the intake pipe of draining pump, the degree that the length decision check valve sheet of position-limit mechanism is opened.