CN203384463U

CN203384463U - Improved float valve

Info

Publication number: CN203384463U
Application number: CN201320351438.5U
Authority: CN
Inventors: 王宜梁
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-19
Filing date: 2013-06-19
Publication date: 2014-01-08
Anticipated expiration: 2023-06-19

Abstract

The utility model relates to an improved float valve which comprises a valve body, a valve core, a valve rod floater assembly, a counter weight tank and a locking claw assembly. Under the mutual effects of the valve rod floater assembly, the counter weight tank and the locking claw assembly, the improved float valve can be quickly opened only when the water level declines to the certain position and can be quickly closed only when the water level rises to the certain position. After the improved float valve is practically used, water leakage of the float valve can be prevented.

Description

Improved float valve

Technical field

The utility model relates to a kind of improved float valve, belongs to other novel electromechanical basic part technical fields.

Background technique

Float valve is as a kind of generally application on civilian and industrial liquid storage equipment of equipment of automatic controlling liquid level.Its feature is simple in structure easy for installation.Float valve is to obtain different buoyancy by ball float when liquid surface lifting to realize closing and opening of valve.Due in many cases, the lifting of liquid level is slowly, so closing and opening of valve is also slowly.This just causes the often working state in a kind of small opening degree of float valve, makes some solid impurity prolonged stays that come with liquid at the valve place, cause gradually float valve to be not closed completely so that liquid level out of control.This is a kind of " common fault " of all kinds float valve.The thinking that solves this kind " common fault " is: avoid the working state of valve in a kind of small opening degree, and after liquid level drops to a certain degree, rapid Open valve, after liquid level rises to a certain degree, rapid throttle down.The equipment that can realize at present above-mentioned functions adopts solenoid valve to add that " liquid level---electrical signal " conversion equipment controls the switching of solenoid valve usually.Although can solve this kind " common fault ", also bring and increase structure complexity and larger etc. the problem of not easy and cost increase is installed.

Summary of the invention

The purpose of this utility model is: propose a kind of improved float valve, at less increase structure complexity with keep, under prerequisite easy for installation, solving above-mentioned technical barrier.

The utility model is realized by the following technical solutions:

Improved float valve comprises valve body, spool, valve rod floating ball component, counterweight tank, lock pawl assembly; It is characterized in that: described spool is positioned at described valve body and can moves forward and backward the effect of playing valve; Described valve rod floating ball component is comprised of valve rod, connecting rod, ball float, the valve lever pin of stirring described spool advance and retreat, and described valve rod floating ball component also is provided with positioning pawl; Described counterweight tank is hung under described ball float by cotton rope or thin chain; Owing to often being submerged under liquid level, so the inside of described counterweight tank filled with liquid all the time; Described valve rod floating ball component is connected with described valve body by described valve lever pin and can rotates around the axis of described valve lever pin; Described lock pawl assembly is comprised of lock pawl, spring, adjusting screw, stop pawl pin; Described lock pawl is connected with described valve body by described stop pawl pin and can rotates around the axis of described stop pawl pin; Described lock pawl contacts with described positioning pawl under the elastic force effect of described spring, the moving direction of the two pairs of relatively described positioning pawls of surface of contact of the two is all inclined-plane, stops described valve rod floating ball component rotation by the mechanical resistance of described inclined-plane transmission during middle arbitrary position when liquid level in high-order and low level and makes described spool maintenance current location; When liquid level, from low level, be raised to high-order buoyancy while approaching maximum value described positioning pawl back down described lock pawl, described valve rod is stirred described spool and is closed rapidly, close rear described positioning pawl and forward the opposite side of described lock pawl to, the role transformation of described lock pawl is for making described spool keep closing; When liquid level described positioning pawl from a high position drops to low level backs down described lock pawl under the gravity of described valve rod floating ball component and described counterweight tank promotes, described valve rod is stirred described spool and is opened rapidly, after opening, described positioning pawl rotates back into previous position, and the role transformation of described lock pawl is for making described spool remain on enable possition.

Described stop pawl pin is a cam pin, for adjusting the position of described lock pawl, make described lock pawl when described spool is in the closed position contact with described positioning pawl in place, play and stop described valve rod to rotate, keep the effect of described spool in complete closed position to described spool opening direction.

The utility model is further perfect: described counterweight tank by the PPR equidensity lower material make.

Beneficial effect: the utility model is owing to adopting technique scheme, make improved float valve only just open and close rapidly after liquid level arrives low level or a high position, working state that can be in a kind of small opening degree, therefore solid impurity can not be detained at the valve place, thereby can guarantee that valve closing is good.Improved float valve is relatively simple for structure, particularly easy for installation, is convenient to public use.

The accompanying drawing explanation

The utility model can be used for improving the various ways float valve.An embodiment after only the float valve that common level is installed and spool is outwards opened being improved for simplicity's sake provides accompanying drawing, so that the utility model is described in further detail.

Fig. 1 is the utility model embodiment's schematic diagram.In figure:

1---valve body

2---spool

3---positioning pawl (lower end and valve rod are connected as a single entity)

4---adjusting screw

5---spring

6---lock pawl

7---the stop pawl pin

8---valve rod (upper end and positioning pawl are connected as a single entity)

9---connecting rod

10---ball float

11---the counterweight tank

12---cotton rope

13---valve lever pin

Fig. 2, Fig. 3, Fig. 4 are the schematic diagram of valve open process

Fig. 5, Fig. 6, Fig. 7 are the schematic diagram of valve closing process

Embodiment

In order to illustrate the utility model, below in conjunction with accompanying drawing, further set forth the utility model.

With reference to Fig. 1, improved float valve comprises: valve body 1, in spool 2(figure, left-hand component is for the material of valve seal in spool), lower end and the valve rod 8 of positioning pawl 3(positioning pawl are connected as a single entity), adjusting screw 4, spring 5, lock pawl 6, stop pawl pin 7, upper end and the positioning pawl 3 of valve rod 8(valve rod are connected as a single entity), connecting rod 9, ball float 10, counterweight tank 11, cotton rope 12, valve lever pin 13.The left-hand component of valve body 1 is pipe thread, during for installation on liquid storage equipment, with liquid inlet pipe, docks; The top part is the bearing of adjusting screw 4 and spring 5; Right-hand component is the bearing of stop pawl pin 7; Part is the bearing of valve lever pin 13 below.Spool 2 is positioned at valve body 1 inside, and can move left and right the effect of playing valve.Counterweight tank 11 is hung ball float 10 times by cotton rope 12.Owing to often being submerged under liquid level, so counterweight tank 11 inside filled with liquid all the time.The valve rod floating ball component be comprised of positioning pawl 3, valve rod 8, connecting rod 9, ball float 10 is connected with valve body 1 by valve lever pin 13, and can rotate around the axis of valve lever pin 13.Lock pawl 6 is connected with valve body 1 by stop pawl pin 7, and can rotate around the axis of stop pawl pin 7.Lock pawl 6 contacts with positioning pawl 3 under the elastic force effect of spring 5, and the surface of contact of lock pawl 6 and positioning pawl 3 and the moving direction of positioning pawl 3 have a suitable angle, make the motion of described valve rod floating ball component be subject to resistance.Adjusting screw 4 is given the elastic force of lock pawl 6 for Regulation spring 5.Stop pawl pin 7 is cam pins, for adjusting the position of lock pawl 6, make lock pawl 6 when spool 2 is in the closed position contact with positioning pawl 3 in place, play and stop valve rod 8 to rotate, keep spool 2 effect in the closed position to clockwise direction.

Improved float valve valve open process is as follows: with reference to Fig. 2, spool 2 is closed, and positioning pawl 3 is positioned at lock pawl 6 lefts.When liquid level starts to descend from a high position, under the impact of ball float 10 gravity, give valve rod 8 one power of rotating to spool 2 opening directions, simultaneously spool 2 also is subject to the pressure from liquid in pipeline to opening direction, the counterweight tank 11 of now filling liquid is floating in liquid, so the power be subject on valve rod 8 is not enough to overcome lock pawl 6 resistances to positioning pawl 3, so spool 2 keeps closing.

When liquid level from a high position drops to low level, the counterweight tank 11 of filling liquid is hung out liquid level by cotton rope 12, the power that its suffered gravity makes valve rod 8 rotate to spool 2 opening directions approaches the maximum value (see figure 3), the power made progress now produced on inclined-plane with contacting of positioning pawl 3 at lock pawl 6 is greater than the elastic force of spring 5, so lock pawl 6 is backed down, valve rod 8 has been removed resistance and has been rotated and to stir spool 2 and open rapidly to clockwise direction.After opening, positioning pawl 3 forwards the right-hand of lock pawl 6 to.Now the role transformation of lock pawl 6, for stoping valve rod 8 to spool 2 closing direction motions, makes spool 2 be held open (see figure 4).

Improved float valve valve closing process is as follows: with reference to Fig. 5, spool 2 is opened, and it is right-hand that positioning pawl 3 is positioned at lock pawl 6.When liquid level starts to rise from low level, the buoyancy that ball float 10 is subject to is to 8 one power of rotating to spool 2 closing directions of valve rod, and power now is not enough to overcome lock pawl 6 resistances to positioning pawl 3, so spool 2 is held open.

When liquid level from low level is raised to a high position, the buoyancy that ball float 10 is subject to approaches maximum value, the power that valve rod 8 is rotated to spool 2 closing directions approaches the maximum value (see figure 6), the power made progress produced on inclined-plane with contacting of positioning pawl 3 at lock pawl 6 is greater than the elastic force of spring 5, so lock pawl 6 is backed down, valve rod 8 has been removed resistance and has been stirred spool 2 and close rapidly to counterclockwise rotating.Close rear positioning pawl 3 and rotate back into the left of lock pawl 6, now the role transformation of lock pawl 6, for stoping valve rod 8 to spool 2 opening directions motions, makes spool 2 keep closing (see figure 7).

From above-mentioned, the float valve after improvement has increased positioning pawl, lock pawl assembly, counterweight tank, and structure complexity increases few; Installation method, with consistent before improvement, is also to adopt to dock with the liquid inlet pipe screw thread.

Basic principle of the present utility model and major character and advantage of the present utility model have been explained in above explanation.The technician of the industry should understand, and the utility model is not subject to the restriction of above-mentioned example, and the description in above-mentioned example and specification just illustrates principle of the present utility model.Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. improved float valve, comprise valve body, spool, valve rod floating ball component, counterweight tank, lock pawl assembly; It is characterized in that: described spool is positioned at described valve body and can moves forward and backward the effect of playing valve; Described valve rod floating ball component is comprised of valve rod, connecting rod, ball float, the valve lever pin of stirring described spool advance and retreat, and described valve rod floating ball component also is provided with positioning pawl; Described counterweight tank is hung under described ball float by cotton rope or thin chain; Described valve rod floating ball component is connected with described valve body by described valve lever pin and can rotates around the axis of described valve lever pin, and the angle of rotation is subject to the restriction of described valve body and described spool; Described lock pawl assembly is comprised of lock pawl, spring, adjusting screw, stop pawl pin; Described lock pawl is connected with described valve body by described stop pawl pin and can rotates around the axis of described stop pawl pin; Described lock pawl contacts with described positioning pawl under the elastic force effect of described spring, and the moving direction of the two pairs of relatively described positioning pawls of surface of contact of the two is all inclined-plane; Described positioning pawl respectively has a restriction site in the both sides of described lock pawl, and described positioning pawl can back down described lock pawl and turn to another restriction site by a restriction site under the effect of power along described inclined-plane.

2. improved float valve according to claim 1, it is characterized in that: described stop pawl pin is the cam pin of the described lock pawl of a capable of regulating position.

3. improved float valve according to claim 1, it is characterized in that: described counterweight tank is made with the PPR material.