CN203309150U

CN203309150U - Valve

Info

Publication number: CN203309150U
Application number: CN2013203130050U
Authority: CN
Inventors: 韩效亮
Original assignee: Individual
Current assignee: Henan Vico Anguang Industrial Co Ltd
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2013-11-27
Anticipated expiration: 2023-05-31

Abstract

The utility model relates to a valve, which comprises a valve body, a pressure rod, a driving device and a piston component, wherein a water outlet is formed in the lower part of the valve body; the water outlet in the valve body is matched with the piston component; the top end of the pressure rod is connected with the driving device; a center hole is formed in the middle part of the piston component; the lower end of the pressure rod penetrates through the center hole; the pressure rod is provided with a snap spring piece A and a buffer spring; one end of the buffer spring is connected with the snap spring piece A, and the other end of the buffer spring is connected with the piston component; the pressure rod is movably connected with the piston component. According to the valve, when the driving device such as a stepper motor or a thermal bulb works, the pressure rod is downwards pushed, the valve is closed, and the pressure rod is continuously pushed by the stepper motor or the thermal bulb, and can continuously move downwards relative to the piston component to prevent the driving device from being damaged by strong reacting force, so that the service life of the driving device such as the stepper motor or the thermal bulb is greatly prolonged, and meanwhile, the machining assembly accuracy and cost are greatly lowered.

Description

A kind of valve

Technical field

The utility model belongs to flow control valve, is specifically related to a kind of thermostat valve.

Background technique

The process changed along with heat in recent years, thermostatic valve is widely used.But old thermostatic valve and electric heating valve, its structure are mostly the principles of utilizing thermometer bulb to expand with heat and contract with cold.Ambient temperature rising drive unit thermometer bulb expands, and the depression bar piston moves down, cut-off valve.After closing, if excess Temperature, thermometer bulb continues the depression bar application of force, and depression bar can not move, and imposes very large outbreak firmly to thermometer bulb, causes the medium in thermometer bulb to overflow, and drive unit lost efficacy, and used inconvenience and high cost.In like manner, electric heating valve is also that depression bar causes diaphragm breakage to lose efficacy to the thermometer bulb interior diaphragm because of the pressure produced that expands.

In application, the stepper motor of usining is also arranged as driving power, easy to use.Because the stepper motor follow procedure be take electromagnetic pulse and is driving, mobile very accurate, but too large with the error after the valve body assembling, in case after valve closed, stepper motor also gave depression bar pressure downwards, because of reaction force, cause easily that stepper motor throws switch, the problem such as stuck, cause stepper motor to damage and lost efficacy.If improve the precision of machining assembling, cost can improve again greatly.

The model utility content

The technical problems to be solved in the utility model is, a kind of flow control valve is provided, the depression bar of this valve body passes center hole and piston assembly can relatively move, when the closed water outlet of piston assembly, it is mobile that depression bar can continue buffering, can automatically regulate the pressure of depression bar, extend the working life of drive unit such as stepper motor or thermometer bulb, reduce simultaneously machining assembly precision and cost.

For achieving the above object, the present invention is by the following technical solutions:

A kind of valve, comprise valve body, depression bar, drive unit and piston assembly, described valve body lower portion is provided with water outlet, water outlet in described valve body coordinates with piston assembly, described depression bar top connecting drive device, and the middle part of described piston assembly arranges center hole, described depression bar lower end passes center hole and piston assembly is flexibly connected, depression bar arranges location card reed A and buffer spring, and described buffer spring one end coordinates with Clip Reed A, and the other end coordinates with piston assembly.Described depression bar lower end is provided with location card reed C or locator protrusions, and piston assembly and depression bar can have relative displacement.When the closed water outlet of piston assembly, depression bar can pass piston assembly and continue descending under the effect of drive unit, be that depression bar has the mobile buffer space of continuation, thereby avoid driving mechanism, such as thermometer bulb or stepper motor etc., continue to drive depression bar and move downward, and because depression bar withstands driving mechanism without running space, it produced to huge reaction force, occur that thermometer bulb damages, stepper motor throws switch, stuck etc. causes the drive unit Problem of Failure.

Preferably, described drive unit comprises step motor type or thermometer bulb formula control mechanism, with control depression bar to down stroke, or drive unit can control the to-and-fro motion of depression bar, under the drive of depression bar, piston assembly coordinates realization to close or open with water outlet.

Preferably, described buffer spring is arranged on downside and the depression bar interlock of piston assembly, is stretched by depression bar, and the upper end of buffer spring is fixedly connected with piston assembly, and lower end and depression bar (10) lower end is located by connecting.

Preferably, the groove/projection of described depression bar setting and be used to blocking the Clip Reed A of buffer spring, described Clip Reed A coordinates with groove/projection and the depression bar interlock.

The utility model compared with prior art has the following advantages:

1) water outlet in the utility model valve body coordinates unlatching or throttle down with piston assembly; When step motor type control or the work of other driving mode, press depression bar downwards, valve closing, in case stepper motor works on or the thermometer bulb continuation is given downwards and pressure, depression bar can continue to move down, thoroughly solved the conventional ADS driving device when depression bar stops moving downward, depression bar to drive unit without buffering, can not automatically regulate the problem that depression bar produces huge reaction force, avoid drive unit to damage because of the reaction force of depression bar, greatly extend the working life of drive unit such as stepper motor or thermometer bulb, reduce simultaneously machining accuracy and cost.

2) the utility model reduces machining assembly precision and cost, and efficient work is stable.

The accompanying drawing explanation

Fig. 1 is embodiment 1 structural representation

Fig. 2 is embodiment 2 structural representation

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further:

Embodiment 1

As shown in Figure 1, the present embodiment comprises valve body 1, depression bar 10, step motor type control mechanism and piston assembly 2, and described depression bar 10 upper ends connect stepper motor, and stepper motor is implemented driving force to it, makes it descending;

Described valve body 1 bottom is provided with water outlet 14, and the water outlet 14 in described valve body coordinates with piston assembly 2;

Described valve body 1 top arranges piston sleeve 11 and piston cap 9, described piston sleeve 11 and piston cap 9 inside are provided for protective cap 8, the compressing tablet 6 of Returnning spring 7 location, the corresponding depression bar 10 in the medial axis of described piston cap 9, protective cap 8, compressing tablet 6, piston sleeve 11, piston assembly 2 arranges center hole, described depression bar passes piston cap 9, protective cap 8, Returnning spring 7, compressing tablet 6, piston sleeve 11 and piston assembly 2 successively by center hole, and prevents from breaking away from Clip Reed C15 seized piston assembly 2; Clip Reed B13 is set be used to blocking Returnning spring 7 on the depression bar between described protective cap 8 and compressing tablet 6, piston sleeve 11 and piston cap 9 are established respectively to O RunddichtringO B12 and O RunddichtringO A5 with the depression bar cooperation place.

Depression bar between described piston sleeve 11 and piston assembly 2 arranges groove, location card reed A3 and buffer spring 4 according to the stroke location of depression bar, applicable to the control valve of longer stroke; Described Clip Reed A3 is arranged in groove and is connected with depression bar for buffer spring 4 one ends, and the other end of described buffer spring 4 is connected with piston assembly 2; Described piston assembly 2 can be the single-piece coordinated with water outlet 14, can be also the assembly of suit fitted seal circle.

During installation, at first Clip Reed A3 is snapped in the groove of depression bar 10 lower ends, again depression bar 10 is inserted to piston assembly 2 center holes, be inserted in buffer spring 4, O RunddichtringO A5 is placed on to piston sleeve 11 bottoms, from bottom to top will be with Clip Reed A3, piston assembly 2, buffer spring 4 inserts piston sleeve 11 and O RunddichtringO A5 from the center hole of piston sleeve 11, from top, be inserted in successively compressing tablet 6, Returnning spring 7, again Clip Reed B13 is snapped in the groove of depression bar 10 upper ends, be inserted in protective cap 8, again O RunddichtringO B12 is inserted in to depression bar 10, finally depression bar 10 is inserted from the center hole of piston cap 9, piston sleeve 11 is arranged on valve body 1, assemble complete.Wherein, described piston sleeve 11 and valve body 1 use are threaded.When stepper motor is worked, press depression bar 10 downwards, compressing buffer spring 4 makes piston assembly 2 by valve closing, in case stepper motor works on, the relative piston assembly 2 of depression bar 10 continues to move down, and has solved the problems such as stepper motor is stuck, the damage inefficacy that throws switch.

Embodiment 2

The present embodiment difference from Example 1 is, adopts thermometer bulb formula control mechanism, namely by liquid in thermometer bulb, varies with temperature the control depression bar 10 that expands with heat and contract with cold and advances.As shown in Figure 2, described buffer spring 4 is the stretching spring, and being arranged between the lower end of depression bar and piston assembly 2 is the water outlet side, and buffer spring 4 one ends are fixedly connected with piston assembly 2, and the other end links with depression bar 10 by location card reed A3 location buffer spring 4 is set.The descending stretching buffer spring 4 of depression bar 10 makes piston assembly 2 that water outlet 14 is closed, if thermometer bulb continues to apply active force downwards, depression bar 10 piston assembly 2 relatively continues to move down, and prevents the destruction of reaction force to thermometer bulb.

The utility model above-described embodiment is only this patent mode of execution preferably, and the structure that all employing the technical program are described, feature and the variation on its spiritual principle, modification all belong to the protection domain of this patent.

Claims

1. valve, comprise valve body (1), depression bar (10), drive unit and piston assembly (2), described valve body (1) bottom is provided with water outlet (14), water outlet (14) in described valve body coordinates with piston assembly (2), described depression bar (10) top connecting drive device, it is characterized in that, described piston assembly (2) arranges center hole, described depression bar (10) passes center hole and piston assembly (2) is flexibly connected, depression bar (10) arranges location card reed A(3) and buffer spring (4), described buffer spring (4) one ends and Clip Reed A(3) coordinate, the other end coordinates with piston assembly (2), described depression bar (10) lower end is provided with location card reed C(15) or locator protrusions.

2. valve according to claim 1, is characterized in that, described drive unit is step motor type or thermometer bulb formula control mechanism.

3. valve according to claim 1 and 2, it is characterized in that, described buffer spring (4) is arranged on downside and the depression bar interlock of piston assembly (2), and the upper end of buffer spring (4) is fixedly connected with piston assembly (2), and lower end and depression bar (10) lower end is located by connecting.

4. valve according to claim 1 and 2, is characterized in that, groove/projection that described depression bar (10) arranges and be used to locating the Clip Reed A(3 of buffer spring (4)), described Clip Reed A(3) with groove/projection, coordinate.