CN2118864U

CN2118864U - Liquid level control valve

Info

Publication number: CN2118864U
Application number: CN 91229360
Authority: CN
Inventors: 王树天; 马建国; 陈万机
Original assignee: Lanzhou Xigu Science Instruments Factory Test; Lanzhou Science And Technology Research Institute Science And Technology Service Department
Current assignee: Lanzhou Xigu Science Instruments Factory Test; Lanzhou Science And Technology Research Institute Science And Technology Service Department
Priority date: 1991-11-19
Filing date: 1991-11-19
Publication date: 1992-10-14

Abstract

The utility model relates to a liquid level control valve which uses the function of a float to open and close a valve core. A second permanent magnet which is used for blocking one guide hole is arranged in a sealed cavity which is formed among a valve cover, a movable valve core, and a sealing pad on the movable valve core, and is communicated with a liquid inlet channel and a liquid outlet channel only by two guide holes. The interaction of a first permanent magnet which is arranged on a float and the second permanent magnet is used for causing the guide holes to be blocked or opened by the second permanent magnet, and the opening and the closing of the liquid level control valve which uses the function of a float to open and close a valve core are realized.

Description

Liquid level control valve

The utility model relates to a kind ofly controls the valve of its keying with liquid level, it be by movable spool and the sealing gasket on it as shut-off means, it is closed with fitting surface on the liquid outlet channel or separate the keying function that realizes valve to utilize float to drive shut-off means.

Existing fluid level control valve all adopts float to drive lever motion, utilizes the lever of motion to make spool be mated face or valve seat closure or separation.Existing hydraulic control valve has following deficiency: 1, valve volume is bigger; 2, the installation position is equipped with certain requirement; 3, the part in the valve is fragile, the valve invalidation of hanking.

It is little that the purpose of this utility model provides a kind of volume, and the mounting point is not had specific (special) requirements, fragile inefficacy, do not control its keying with liquid level valve.

The utility model is to form an airtight chamber between valve gap and spool and the sealing gasket on it, and this chamber is communicated with feed liquor and liquid outlet channel with two guide holes respectively.But the guide hole place that is communicated with liquid outlet channel in chamber is equipped with the permanent magnet of this guide hole of shutoff.Secondly directly or indirectly connecting another permanent magnet on the float that outside chamber, is provided with.The permanent magnet motion that utilizes the lifting of float to drive to connect with it and to the permanent magnet generation effect in the chamber makes its shutoff or opens the guide hole of cooperation with it.When this guide hole during by shutoff the feed pathway flowing liquid enter chamber through another guide hole, under the pressure effect that flows into chamber liquid, movable spool contact with sealing gasket jack-up and with the fitting surface of liquid outlet channel simultaneously, cut off the passage that passes in and out fluid; Otherwise under the permanent magnet effect that connects with float, the permanent magnet in the chamber leaves guide hole and makes when being opened by the guide hole of shutoff, can be with the conducting of liquid in-out passage, under liquid effects, movable spool and the sealing gasket on it are removed the fitting surface that is mated, and make the direct conducting of liquid in-out passage simultaneously.

Interaction by visible two permanent magnets of aftermentioned embodiment can be the repulsive interaction of like pole, also can be the adelphotaxy between opposite pole.

The utility model has following advantage:

1, valve arrangement is simple, and cost of production is lower;

2, volume is little, compact structure;

3, the installation of valve does not have specific (special) requirements, and is easy for installation;

4, stable and reliable for performance, not fragile.

Below in conjunction with drawings and Examples the utility model is made detailed explanation.Wherein accompanying drawing 1 is first embodiment of the present utility model, and Fig. 2 is second embodiment.

Embodiment 1

(see figure 1) feed pathway 1 and liquid outlet channel 2 have fitting surface 3 to match with sealing gasket 4 on the movable spool 5 in this example.First guide hole 8 and feed pathway 1 conducting arranged on spool 5, and other has second guide hole 9 and liquid outlet channel 2 conductings.Valve gap 6 and spool 5, formation one only has the chamber 7 of guide hole 9,8 and extraneous conducting between the sealing gasket 4.Have a guide groove 13 to be built-in with second permanent magnet 10 in the chamber 7, there is sealing material 15 its upper end, forms the shutoff end 14 to hole 9.Outside the chamber 7 float 12 is arranged, first permanent magnet 11 is arranged on it.The effect end 16 of magnet 11 and the effect end 17 of magnet 10 should be like pole, are that N is extremely to the N utmost point in Fig. 1.Movable spool 5 and valve gap 6 are used Nonferromugnetic material; Make as aluminium, copper, plastic or other material.

This routine working principle is as follows: in shown position, liquid is through 1 inflow and in 8 inlet chambers 7 of hole, and 9 discharge through the hole.Simultaneously, liquid is depressed spool 5 and sealing gasket 4 under the fluid effect, and face 3 is separated with pad 4, causes fluid directly to be discharged from passage 1 inlet passage 2.Float when the liquid level effect makes float 12, the N of magnet 11 extremely produces repulsion to the N utmost point of magnet 10, makes magnet 10 suspend hole 9 shutoff the most at last.This moment, a fluid part continued to flow out through fitting surface 3 and pad 4 " passages ", another part is inflow chambers 78 through the hole, because hole 9 is by shutoff, liquid can't be discharged in the chamber 7, cause spool 5 and sealing gasket 4 by jack-up and with fitting surface 3 and 4 closures with liquid increase in the chamber 7, all paths between passage 1 and 2 are cut off, realize valve closing.

Embodiment 2

Among the embodiment 2 who is provided by Fig. 2, porose 20 are slidingly matched with guide rod 18 on the valve gap 6, and guide rod 18 upper ends connect with member 19, and first permanent magnet 11 is housed on the member 19; Guide rod 18 lower ends connect with float 12.Other structure of this example and shown in Figure 1 basic identical only is that the effect end 16,17 of first and second permanent magnet is opposite pole.Its action principle and example 1 are also basic identical, and the different magnets 10 that only are are that attraction by magnet 11 makes 10 to leave hole 9.After float 12 risings make 11 pairs 10 reaction force attenuation of magnet,, it is fallen, hole 9 is blocked, flow stream is cut off because of the effects of 10 deadweights.

Claims

1, fluid level control valve, the fitting surface 3 that matches with the movable spool 5 of band sealing gasket 4 is arranged between feed pathway 1 and the liquid outlet channel 2, utilize the motion of float 12 to drive spool 5 and go up the keying that sealing gasket 4 motions realize valve, only it is characterized in that having between sealing material 4 and spool 5 and the valve gap 6 by being positioned at the airtight chamber 7 that first guide hole 8 on the movable spool 5 and second guide hole 9 are communicated with feed pathway 1 and liquid outlet channel 2, but be provided with under with first permanent magnet, 11 effects of float 12 motion shutoff or open second permanent magnet 10 of guide hole 9 in chamber 7, movable spool 5 and valve gap 6 usefulness Nonferromugnetic materials are made.

2, valve according to claim 1, it is characterized in that second permanent magnet 10 is arranged in the guide groove 13 that forms on chamber 7 valve gaps 6, second permanent magnet 10 is provided with sealing material 15 with the shutoff abutting end 14 of guide hole 9, first permanent magnet 11 places in the float 12, and the interaction end 17 of two magnets 10 and 11 and 16 is a like pole.

3, valve according to claim 1, it is characterized in that second permanent magnet 10 is arranged in the guide groove 13 that forms on chamber 7 valve gaps 6, second permanent magnet 10 is provided with sealing material 15 with the shutoff abutting end 14 of guide hole 9, valve gap 6 is provided with the hole 20 that is slidingly matched with guide rod 18, guide rod 18 1 ends and float 12 are fixing, the other end is fixing with the member 19 that has first permanent magnet 11, and two magnets 10 and 11 interaction end 17 and 16 are opposite pole.