CN202109041U

CN202109041U - Bottom valve

Info

Publication number: CN202109041U
Application number: CN 201120209394
Authority: CN
Inventors: 孙述全
Original assignee: Wuhu Jinmao Liquid Science and Technolgoy Co Ltd
Current assignee: Wuhu Jinmao Liquid Science and Technolgoy Co Ltd
Priority date: 2011-06-21
Filing date: 2011-06-21
Publication date: 2012-01-11
Anticipated expiration: 2021-06-21

Abstract

The utility model discloses a bottom valve. One end of a spool shaft in the bottom valve is inserted into a bonnet while the spool shaft is capable of perpendicularly moving, and the other end of the spool shaft is connected with a spool rubber gasket. A spring covers the outer periphery of the spool shaft, and an inlet of a valve body is sealed by the spool rubber gasket by the aid of elasticity of the spring. Therefore, under guarantee of elasticity of the spring, when fluid pressure at the inlet of the valve body disappears, the inlet of the valve body can be quickly sealed to prevent reflowing of part of liquid so as to achieve better reflowing prevention effect. Further, the spool shaft perpendicularly moves in the bonnet, so that the deflection of the spool rubber gasket when sealing the inlet of the valve body is avoided.

Description

Bottom valve

Technical field

The utility model relates to a kind of bottom valve, particularly relates to a kind of sealing configuration of bottom valve.

Background technique

Bottom valve is a kind of half-duplex channel, can prevent the liquid return in the passage, and bottom valve is made up of parts such as valve body, flap, valve gaps usually.When liquid when valve gap inlet gets into valve body, under the pressure effect of fluid, it is that passage is opened that flap is washed open; When the pressure of inlet fluid disappeared, flap was closed rapidly, and liquid will can not flow backwards, and having played is unimpeded drawing water and the effect of the conserve water loss of energy.Core component in the bottom valve is its sealing configuration, and it has directly determined bottom valve effect in actual use, if poorly sealed, has seepy question etc., and system will be difficult to realize automatic control, also not have the effect that prevents aqueous reflux.At present, the existing main Quality of bottom valve also is the problem of its sealing configuration.

In sum, problem demanding prompt solution is, designs rational sealing configuration for bottom valve, makes its sealing effect can satisfy actual usage requirement.

Summary of the invention

The utility model technical problem to be solved is, a kind of bottom valve is provided, and it has realized the better seal effect through rational sealing configuration, can satisfy actual usage requirement.

For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of bottom valve, and it comprises: valve body in addition, also comprises: valve bonnet, it covers the ingress of said valve body; Bolt, it is used for said valve bonnet is fixed to said valve body; Valve gap, it is installed on the outlet port of said valve body; Poppet shaft, one of which end are inserted in the said valve gap and can be done vertical motion, and the other end links to each other with the spool rubber pad; Spring, it is wrapped in the periphery of said poppet shaft and makes said spool rubber seal residence state the inlet of valve body through its elastic force.

Described bottom valve also comprises, pad, and it fills up between said bolt and valve bonnet.

The utility model has the advantages that, the poppet shaft in the utility model, the one of which end inserts in the said valve gap and can do vertical motion, and the other end links to each other with the spool rubber pad; Simultaneously, the periphery of poppet shaft is enclosed with spring, makes said spool rubber seal residence state the inlet of valve body through its elastic force.Therefore, the elastic force through spring can guarantee that the hydrodynamic pressure of valve body ingress can close the valve body inlet rapidly and reflux to prevent partially liq when disappearing, thereby plays better anti-backflow effect; In addition, poppet shaft is done vertical motion in said valve gap, and the position can not produce deviation in the time of can guaranteeing spool rubber pad closed valve inlet.

Description of drawings

Fig. 1 is the structural representation of valve bonnet in the utility model bottom valve;

Fig. 2 is the overall structure schematic representation of the utility model bottom valve.

Embodiment

For further disclosing the technological scheme of the utility model, be described with reference to the accompanying drawings the mode of execution of the utility model now.

Fig. 1 is the structural representation of valve bonnet in the utility model bottom valve, and Fig. 2 is the overall structure schematic representation of the utility model bottom valve, among the figure, comprising: valve body 7 in addition, also comprises: valve bonnet 1, and it covers the ingress of said valve body 7; Bolt 2, it is used for said valve bonnet 1 is fixed to said valve body 7, also has pad 3 on the bolt 2, fills up between said bolt 2 and valve bonnet 1 to play better fixed effect; Valve gap 8, it is installed on the outlet port of said valve body 7; Poppet shaft 6, one of which end are inserted in the said valve gap 8 and can be done vertical motion, and the other end links to each other with spool rubber pad 4; Spring 5, it is wrapped in the periphery of said poppet shaft 6 and makes said spool rubber pad 4 seal up the inlet of said valve body 7 through its elastic force.

Below in conjunction with the action situation of description of drawings the utility model when reality is used.

Before the use, spool rubber pad 4 seals up the inlet of valve body 7 through the elastic force of spring 5.During use, if liquid is arranged when the inlet of valve body 7 flows into, valve bonnet 1 can filter out a part of particle in the liquid, and when the liquid that flows into reached certain pressure, spool rubber pad 4 was washed open liquid and constantly flowed to outlet from the valve body inlet; When the fluid pressure that flows into disappears or when being lower than the certain pressure value, the elastic force through spring 5 makes spool rubber pad 4 close the valve body inlet rapidly, thereby reaches the effect that prevents liquid return.

More than, the basic design and the basic principle of the utility model have been set forth through introduction to listed mode of execution.But the utility model never is limited to above-mentioned listed mode of execution, and every equivalent variations, improvement of doing based on the technological scheme of the utility model reaches and deliberately become of inferior quality behavior, all should belong to the protection domain of the utility model.

Claims

1. bottom valve, it comprises: valve body (7), it is characterized in that, also comprise: valve bonnet (1), it covers the ingress of said valve body (7); Bolt (2), it is used for said valve bonnet (1) is fixed to said valve body (7); Valve gap (8), it is installed on the outlet port of said valve body (7); Poppet shaft (6), one of which end are inserted in the said valve gap (8) and can be done vertical motion, and the other end links to each other with spool rubber pad (4); Spring (5), it is wrapped in the periphery of said poppet shaft (6) and makes said spool rubber pad (4) seal up the inlet of said valve body (7) through its elastic force.

2. bottom valve according to claim 1 is characterized in that, also comprises, and pad (3), it fills up between said bolt (2) and valve bonnet (1).