CN206496379U - Cassette cooker adjuster - Google Patents

Abstract

The utility model discloses a kind of cassette cooker adjuster, including valve body, enters gas attachment means, crosses depression bar, adjustment axis and igniter.It is provided with valve body into air cavity, anti-over-pressed air cavity and relief chamber, the gas entered in air cavity flows into anti-over-pressed air cavity by a transition opening, and anti-over-pressed air cavity is connected by an inside air flue with relief chamber.Entering gas attachment means has into air flue and including pneumatic jack bar.Depression bar is crossed in anti-over-pressed air cavity, the over-pressed rod seal transition opening when pressure is excessive.One end of adjustment axis is inserted in holding tank and with the first air flue connected with the venthole of valve body and the second air flue connected with the first air flue, provided with the air passing hole connected with relief chamber in valve body, second air flue can align with air passing hole connection or to be staggered and isolates, the second air flue to air passing hole align when ignition device.Depression bar will be crossed in this cassette cooker adjuster and is set perpendicularly to pneumatic jack bar, size is shortened on the width of cassette cooker, is conducive to cassette cooker being made smaller to improve portability.

Description

Cassette cooker adjuster

Technical field

The utility model is related to cassette cooker technical field, more particularly to a kind of structural improvement cassette cooker adjuster.

Background technology

Cassette cooker is called Portable butane gas stove, refers to using gases such as canned butagas, liquefied gas as fuel, and with bright Fire carries out direct-fired on-fixed cooking utensils, is used for family's outdoor leisure and hotel article.Because cassette cooker is often needed It is carried, therefore its size is just into one of key factor for needing to consider during design, the shorter and smaller cassette cooker of size Space-consuming is smaller, is more beneficial in carrying.

As shown in figure 1, cassette cooker includes the adjuster 10 (also referred to as gas valve) being arranged in shaft and stove in structure First 20, adjuster 10 is provided with a switching knob 30, and a gas cylinder 40 is attached in cassette cooker and docked with adjuster 10, by beating Opening switching knob 30 can make the combustion gas in gas cylinder 40 lead to burner 20 and carry out electric ignition to burner 20 simultaneously, so as to allow cassette Stove produces naked light.

For at present, length (X-direction in Fig. 1) size of cassette cooker becomes more readily available control, but the width of cassette cooker Degree (Y-direction in Fig. 1) size then is difficult to be made smaller due to the structure limitation of regulated device 10, and concrete reason is adjuster It is used to prevent the over-pressure safety device of over-pressed danger from arranging along Y-direction in 10.

Therefore, it is the further portability for improving cassette cooker, it is necessary to provide a kind of adjuster of structural improvement to make card The width dimensions of formula stove can reduce.

Utility model content

The purpose of this utility model is to provide a kind of adjuster of structural improvement to enable the width dimensions of cassette cooker Reduce.

To achieve these goals, the utility model provide a kind of cassette cooker adjuster, including valve body, enter gas connection dress Put, cross depression bar, adjustment axis and igniter；It is provided with valve body into air cavity, anti-over-pressed air cavity and relief chamber, interior be provided with of relief chamber subtracts Pressure device, enters gas in air cavity and flows into anti-over-pressed air cavity by a transition opening, anti-over-pressed air cavity by an inside air flue with Relief chamber is connected, and valve body is additionally provided with holding tank and the venthole connected with holding tank, enters gas attachment means and be located at opening into air cavity At mouthful and with enter that air cavity connect enter air flue, entering gas attachment means includes slidably closing or opens the pneumatic jack of air flue Bar, crosses depression bar and is slidingly accommodated in anti-over-pressed air cavity and is approximately perpendicular to pneumatic jack bar, crossing depression bar has Intermediate shoulder and end shoulder Portion, transition opening is located between Intermediate shoulder and end shoulder, and end shoulder closing transition opening, is adjusted when crossing depression bar forward slip One end of nodal axisn seals and rotationally inserted in holding tank, and this one end of adjustment axis has the first air flue connected with venthole And the second air flue that one end is connected with the first air flue, valve body is interior to be provided with the air passing hole connected with relief chamber, and adjustment axis, which is rotated, to be made The align connection or stagger of second air flue and air passing hole isolate, the second air flue to air passing hole align when adjustment axis it is tactile by a moving part Send out ignition device.

In existing cassette cooker, pneumatic jack bar must be the width along cassette cooker due to coordinate with the gaseous core of gas cylinder Spend what direction was set, and the depression bar setting direction of crossing in cassette cooker is consistent with pneumatic jack bar at present.In crossing depression bar and being adjuster The longest part in addition to valve body, therefore the depression bar of crossing in design result in the size of cassette cooker width not at present It can accomplish smaller.And in cassette cooker adjuster of the present utility model, by new Structural assignments, made depression bar substantially with pneumatic jack Bar is vertical, i.e., depression bar be to be set along the length direction of cassette cooker, therefore just shorten size on the width of cassette cooker, Be conducive to cassette cooker being made smaller to improve portability.

It is preferred that valve body is further opened with a transition air chamber, the entrance of transition air chamber is connected with entering air cavity, and transition opening was The outlet of air chamber is crossed, transition air chamber is sealed by a plug.

It is preferred that entering gas attachment means also includes the first elastic component and is fixed on into the interfacing part at air cavity opening, docking Part offers air intake and enters air flue, and air intake is connected by entering air flue with entering air cavity, and pneumatic jack bar is slided and is plugged in interfacing part, First elastic component is located between valve body and one end of pneumatic jack bar and pushing tow pneumatic jack rod seal enters air flue, and the other end of pneumatic jack bar is pushed up Slided during pressure and open air flue.When gas cylinder is inserted the gaseous core of gas cylinder can pushing tow pneumatic jack bar be moved rearwards by and compress first elasticity Part part, now enters air flue and is opened, and the gas in gas cylinder is by air intake and enters air flue and enters in air cavity.When gas cylinder is taken away Afterwards, the elastic force of the first elastic component can realize the automatic-sealed into air flue.

Specifically, entering gas attachment means also includes the annular magnetic part around air intake.Set magnetic part purpose be In order to suck gas cylinder after gas cylinder is accessed, gas leakage situation occurs caused by preventing connection unstable.

Specifically, having on interfacing part on the location division of a protrusion, gas cylinder has the locating aperture being caught in for location division.It is fixed Position portion cooperates with locating aperture, provides guiding and positioning action for the access of gas cylinder, can prevent the gas cylinder quilt after access Unintentional rotation.

It is preferred that making the second elastic component that depression bar is slided backward provided with pushing tow Intermediate shoulder in anti-over-pressed air cavity.Second Elastic component, which is provided, made the elastic force that depression bar is slided backward, it is ensured that transition opening is in open state under the conditions of normal barometric pressure.

It is preferred that the one end for crossing depression bar is provided with positioning groove, a locking plate is provided with by torsion spring on valve body, cross depression bar to Positioning groove is protruded from outside valve body during front slide and locking plate is caught in positioning groove.Locking plate is caught in after positioning groove can be by Over-pressed lever lock is dead, prevents depression bar from retracting, it is ensured that transition opening can be closed after there is overvoltage, it is ensured that safety.Keep After overpressure situation, stirring locking plate makes it exit positioning groove, and crossing depression bar can reset.

It is preferred that being provided with seal receptacle between adjustment axis and holding tank, adjustment axis drives seal receptacle in being rotated in holding tank, close Seal position difference perforate corresponding with the first air flue, the second air flue on seat.Seal receptacle forms close between adjustment axis and holding tank Envelope is connected, therefore the gas when the second air flue and air passing hole stagger in relief chamber also will not be via air passing hole with accommodating channel opening Spill.

It is preferred that cassette cooker adjuster also includes air-leakage preventing device, air-leakage preventing device includes being fixed on the fixed seat of valve body And slide and be arranged in leakproof push rod in fixed seat, gas cylinder is with entering when gas attachment means are docked top pressure leakproof push rod backward；Regulation A blocking arm is arranged with axle in linkage, blocking arm is limited in leakproof push rod rear when the second air flue aligns with air passing hole.When the second gas Road aligns with air passing hole, if gas cylinder access is likely to occur the situation of gas leakage, therefore sets air-leakage preventing device and blocking arm, leakproof top Bar can not be retreated due to being limited by blocking arm, gas cylinder is not accessed.After the second air flue and air passing hole stagger, i.e. adjustment axis When being closed, the position of blocking arm is just staggered with leakproof push rod and allows leakproof push rod to slide backward, and gas cylinder can be accessed.

Specifically, air-leakage preventing device also includes being located at the 3rd elastic component within fixed seat, the 3rd elastic component pushing tow forward Leakproof push rod.3rd elastic component can keep the state that leakproof push rod is ejected forward.

Brief description of the drawings

Fig. 1 is the structure composition schematic diagram of cassette cooker in the prior art.

Fig. 2 is the stereogram of cassette cooker adjuster of the present invention.

Fig. 3 is the stereogram of another angle of cassette cooker adjuster.

Fig. 4 is the front view of cassette cooker adjuster.

Fig. 5 is the stereogram of gas cylinder.

Fig. 6 is the stereogram of valve body in cassette cooker adjuster.

Fig. 7 is the stereogram of another angle of valve body.

Fig. 8 is the sectional view along A directions in Fig. 4.

Fig. 9 is the sectional view along B directions in Fig. 4.

Figure 10 is the sectional view along C directions in Fig. 4.

Figure 11 is the stereogram of mistake depression bar in cassette cooker adjuster.

Figure 12 is the set location schematic diagram of locking plate in cassette cooker adjuster.

Embodiment

Description is made to preferred embodiment of the present utility model with reference to the Figure of description provided.

As shown in Figures 2 to 5, the utility model provides a kind of cassette cooker adjuster 5, for being docked with gas cylinder 6 and being The burner supply of cassette cooker and igniting.Gas cylinder 6 has a gaseous core 61 and the locating aperture 62 positioned at the periphery of gaseous core 61, when gaseous core 61 Gas when being pressed in gas cylinder 6 can flow out.Cassette cooker adjuster 5 include valve body 51, enter gas attachment means, cross depression bar 52, Adjustment axis 53 and igniter 54.Wherein element based on valve body 51, other elements or device are provided on valve body 51, Therefore the structure first with regard to valve body 51 is introduced.

With reference to Fig. 6 and Fig. 7, Fig. 8, valve body 51 is provided with into air cavity 511, anti-over-pressed air cavity 512, transition air chamber 513, relief chamber 514 and holding tank 515.Enter air cavity 511 positioned at one end of valve body 51 and be open towards the side of valve body 51, anti-over-pressed air cavity 512 Positioned at the inside of valve body 51, the opening of transition air chamber 513 towards valve body 51 opposite side and connect and entering air cavity 511 and anti-overvoltage Between air cavity 512, specifically, the side of transition air chamber 513 has with entering the entrance 516 that air cavity 511 is connected, transition air chamber 513 Bottom there is the transition opening 517 that is connected with anti-over-pressed air cavity 512, the gas entered in air cavity 511 can be by above-mentioned entrance 516 enter in transition air chamber 513 and are entered by transition opening 517 in anti-over-pressed air cavity 512.Transition air chamber 513 is used Plug 50 is sealed, and after plug 50 takes out, can observe the situation of relevant position in valve body 51.Plug 50 and transition air chamber Sealing ring is additionally provided between 513 to strengthen sealing property, in following content, is related to the sealed structure of activity and has been set Put or sealing ring can be set, the no longer setting to each sealing ring is described in detail.Holding tank 515 be located at valve body 51 on Enter the relative other end of air cavity 511, the direction that it is open is identical with transition air chamber 513.The bottom of holding tank 515 is penetratingly provided with One venthole 518, venthole 518 is connected with holding tank 515, and venthole 518 is the exhaust port of whole cassette cooker adjuster 5, It is connected to deliver gas to burner with the burner of cassette cooker by conduit.

In conjunction with Fig. 9 on the basis of the figures above, relief chamber 514 is located at the top of valve body 51, is provided with utilizing Lever principle carries out the decompressor 55 of gas decompression.Anti- over-pressed air cavity 512 is connected by an inside air flue 519 and relief chamber 514 Logical, and valve body 51 is further opened with the air passing hole 510 positioned at the bottom of relief chamber 514, air passing hole 510 is by relief chamber 514 and holding tank 515 connections are got up.

Reference picture 8 simultaneously looks back Fig. 2, enters gas attachment means and is located at the opening into air cavity 511 and including interfacing part 561, gas The elastic component 563 of push rod 562 and first.Wherein interfacing part 561 is fixed and offered into air flue 564 and air feed bottle 6 with valve body 51 The air intake 565 of insertion.Pneumatic jack bar 562, which is slided, is plugged in the entering in air flue 564 of interfacing part 561, and the first elastic component 563 is located at valve Between the rear end of body 51 and pneumatic jack bar 562 and forward pushing tow pneumatic jack bar 562, under the elastic force effect of the first elastic component 563, pneumatic jack Bar 562 (by sealing ring) will enter the back-end closure of air flue 564, so as to isolate air intake 565 and enter air cavity 511.Gas cylinder 6 is connect Fashionable, the gaseous core 61 of gas cylinder 6 will be compressed the first elastic component 563 by pushing tow pneumatic jack bar 562 backward, the pneumatic jack bar slided backward 562 relieve the closing to entering the rear end of air flue 564, air intake 565 is connected by entering air flue 564 with entering air cavity 511.

It is oriented to be provided to the access of gas cylinder 6 with positioning, a forwardly convex location division is additionally provided with interfacing part 561 566, the location division 566 is corresponding with the locating aperture 62 opened up on gas cylinder 6.It is preferred that entering gas attachment means preferably also includes One magnetic part 567, magnetic part 567 is in a ring and around air intake 565, and magnetic part 567 can be by gas cylinder 6 after gas cylinder 6 is accessed Absorption is firm.Magnetic part 567 is a magnet.

With continued reference to Fig. 8 and with reference to Figure 11, Figure 12, cross depression bar 52 and be slidingly accommodated in anti-over-pressed air cavity 512, and cross depression bar 52 bearing of trend is approximately perpendicular to pneumatic jack bar 562.Crossing the centre of depression bar 52 has Intermediate shoulder 521, crosses an end of depression bar 52 End has an end shoulder 522, and the centre of Intermediate shoulder 521 and end shoulder 522 is all provided with fluted so that sealing ring is caught in.Anti- mistake Calm the anger and the second elastic component 57 of pushing tow Intermediate shoulder 521 is provided with chamber 512, the elastic force of the second elastic component 57 drove depression bar 52 to be protected The state for being resisted against in anti-over-pressed air cavity 512 and entering the close bottom wall of air cavity 511 in end shoulder 522 is held, now transition opening 517 are located between Intermediate shoulder 521 and end shoulder 522, and gas can be entered by transition opening 517 from transition air chamber 513 Enter into anti-over-pressed air cavity 512.One end of anti-over-pressed air cavity 512 has opening, crosses relative with end shoulder 522 on depression bar 52 The other end is passed outside valve body 51 by opening, and this one end for crossing depression bar 52 is further opened with a positioning groove 523.Depression bar 52 is crossed to be in When above-mentioned end shoulder 522 is resisted against the state of bottom wall, positioning groove 523 is also located in anti-over-pressed air cavity 512.

As shown in Figure 12, the side of valve body 51 is provided with a rotatable locking plate 58, the locking plate 58 by torsion spring Driven and be pressed in and pass crossing on the end of depression bar 52 outside valve body 51 by the elastic force of torsion spring.When in the anti-over-pressed air cavity 512 of entrance Gas atmosphere excessive (such as the pressure of gas cylinder 6 be more than 5.4KG) when, air pressure will promote depression bar 52 to slide in and out, now over-pressed Bar 52 can be considered the piston rod in anti-over-pressed air cavity 512.Depression bar 52 is crossed to slide and compress the second elastic component 57 until fixed Position groove 523 is reached outside valve body 51, and positioning groove 523 once exposes, and locking plate 58 can block under the effect of torsion spring elastic force Enter into positioning groove 523 and cross depression bar 52 so as to locked.Now, the end shoulder 522 for crossing depression bar 52 just can be (by sealing Circle) transition opening 517 is closed, so as to obstruct gases at high pressure into anti-over-pressed air cavity 512, play a part of safeguard protection. After ensuring that overpressure situation is released, locking plate 58 is stirred away from positioning groove 523, then crossing depression bar 52 can be in the second elastic component 57 Elastic force effect under slide backward, cross depression bar 52 come back to the shape that end shoulder 522 is resisted against the anti-bottom wall of over-pressed air cavity 512 State, transition opening 517 is opened.

As shown in Figure 10, one end of adjustment axis 53 is inserted in the holding tank 515 of valve body 51 by a seal receptacle 59, regulation The other end of axle 53 is fixed for switching knob, and adjustment axis 53 can drive seal receptacle 59 in rotation in holding tank 515.Set in holding tank Having an elastic component to support seal receptacle 59 makes seal receptacle 59 be pressed on receiving trench bottom.This one end of adjustment axis 53 has and venthole With the first gas on the second air flue 532 that first air flue 531 of 518 connections and one end are connected with the first air flue 531, seal receptacle 59 Road 531, the corresponding position difference perforate of the second air flue 532.First air flue 531 be located at adjustment axis 53 center, therefore Adjustment axis 53 keeps connecting with venthole 518 all the time with the first air flue 531 in the rotation process of seal receptacle 59.When the second air flue 532 When staggering with the air passing hole 510 on valve body 51, adjustment axis 53 is in the closed position, when adjustment axis 53 turns to the second air flue 532 Alignd with air passing hole 510 when connecting, adjustment axis 53 is in an open position.When adjustment axis 53 is in an open position, relief chamber 514 Interior gas transfers to cassette cooker burner via air passing hole 510, the second air flue 532, the first air flue 531 and venthole 518.

Fig. 3 is reviewed, igniter 54 is fixed on valve body 51, adjustment axis 53 is connected by a moving part 5a with igniter 54 Connect, when adjustment axis 53 turns to open position by closed position, moving part 5a triggering igniters 54 carry out electric ignition.

It is preferred that this cassette cooker adjuster 5 also includes an air-leakage preventing device, the air-leakage preventing device includes being fixed on valve body 51 Fixed seat 5b, slide the leakproof push rod 5c being arranged in fixed seat 5b and the 3rd elastic component being arranged in fixed seat 5b (not shown).The fixed seat 5b location division 566 being located adjacent on interfacing part 561, the elastic force of the 3rd elastic component drives pushing tow Leakproof push rod 5c front ends are forwardly convex.When gas cylinder 6 is accessed, the pushing tow leakproof push rod 5c of gas cylinder 6 is slided backward while making the 3rd bullet Property part is compressed, and leakproof push rod 5c rear end can be protruded into outside fixed seat 5b backward.It is arranged with linkage in adjustment axis 53 One blocking arm 5d, when adjustment axis 53 is in the closed position, blocking arm 5d position and leakproof push rod 5c stagger；Beaten when adjustment axis 53 is in During open position, blocking arm 5d position is located exactly at leakproof push rod 5c rear end to limit the slips of leakproof push rod 5c backward, That is, when adjustment axis 53 is in an open position, gas cylinder 6 due to can not press push away leakproof push rod 5c therefore can not be inserted into In gas port 565.Air-leakage preventing device is set to be prevented effectively from the appearance of gas leakage situation.

Elastic component in the present embodiment is compression spring.In addition, above-mentioned end shoulder 522, the rear end of pneumatic jack bar 562 If being made using flexible material Deng part, it is not required to be sealed by sealing ring.

The course of work of this cassette cooker adjuster 5 is summarized as follows：When adjustment axis 53 is in the closed position, gas cylinder 6 insert into Gas port 565 realize with entering docking for gas attachment means, after the completion of docking the gaseous core 61 of gas cylinder 6 by reaction force by top pressure, gas In bottle 6 gas by air intake 565, enter air flue 564 and enter in air cavity 11.Enter the gas in air cavity 511 again via transition Air chamber 513 is entered in anti-over-pressed air cavity 512, is then entered by internal air flue 519 in relief chamber 514, in decompressor Depressurized in the presence of 55.When adjustment axis 53 turns to open position, the gas after decompression enters the rear end of adjustment axis 53 simultaneously Burner is oriented to by gas outlet.In the process, the rotation of adjustment axis 53 triggers igniter 54 simultaneously and lighted a fire, because This can produce naked light in burner.

Compared with prior art, by layout structure again in cassette cooker adjuster 5 of the present utility model, by depression bar 52 Position be set perpendicularly to pneumatic jack bar 562, therefore just shorten size on the width of cassette cooker, be conducive to cassette Stove is made smaller to improve portability.

Above disclosed is only preferred embodiments of the present utility model, and its effect is to facilitate those skilled in the art Understand and implement according to this, the interest field of the utility model can not be limited with this certainly, thus it is special according to the present utility model application The equivalent variations that sharp scope is made, still fall within the scope that the utility model is covered.

Claims (10)

1. a kind of cassette cooker adjuster, it is characterised in that：Including valve body, enter gas attachment means, excessively depression bar, adjustment axis and igniting dress Put；

Be provided with the valve body into air cavity, anti-over-pressed air cavity and relief chamber, be provided with decompressor in the relief chamber, it is described enter gas The gas of intracavitary flows into the anti-over-pressed air cavity by a transition opening, the anti-over-pressed air cavity by an inside air flue with it is described Relief chamber is connected, and the valve body is additionally provided with holding tank and the venthole connected with the holding tank,

It is described enter gas attachment means located at it is described enter air cavity opening at and with it is described enter air cavity connect enter air flue, it is described Entering gas attachment means includes entering the pneumatic jack bar of air flue described in slidably closing or opening,

The depression bar of crossing is slidingly accommodated in the anti-over-pressed air cavity and is approximately perpendicular to the pneumatic jack bar, and the depression bar of crossing has Intermediate shoulder and end shoulder, the transition opening are located between the Intermediate shoulder and end shoulder, described to cross depression bar forward The end shoulder closes the transition opening during slip,

One end of the adjustment axis seals and rotationally inserted in the holding tank, and this one end of the adjustment axis has and institute It is provided with and institute in the second air flue that the first air flue and one end for stating venthole connection are connected with first air flue, the valve body State the air passing hole of relief chamber connection, the adjustment axis rotate make second air flue alignd with the air passing hole connect or stagger every From, second air flue to the air passing hole align when the adjustment axis pass through a moving part and trigger the ignition device.

2. cassette cooker adjuster as claimed in claim 1, it is characterised in that：The valve body is further opened with a transition air chamber, institute State the entrance of transition air chamber with it is described enter air cavity connect, the transition opening is the outlet of the transition air chamber, the transitional gas Room is sealed by a plug.

3. cassette cooker adjuster as claimed in claim 1, it is characterised in that：It is described enter gas attachment means also include first elasticity Part and be fixed on it is described enter air cavity opening at interfacing part, the interfacing part offer air intake with it is described enter air flue, it is described enter Gas port by it is described enter air flue with it is described enter air cavity connect, the pneumatic jack bar is slided and is plugged in the interfacing part, described first Elastic component is located between the valve body and one end of pneumatic jack bar and enters air flue, the pneumatic jack bar described in pneumatic jack rod seal described in pushing tow The other end slided during top pressure it is open described in enter air flue.

4. cassette cooker adjuster as claimed in claim 3, it is characterised in that：It is described enter gas attachment means also include around described The annular magnetic part of air intake.

5. cassette cooker adjuster as claimed in claim 3, it is characterised in that：There is the positioning of a protrusion on the interfacing part There is the locating aperture being caught in for the location division on portion, gas cylinder.

6. cassette cooker adjuster as claimed in claim 1, it is characterised in that：In being provided with the anti-over-pressed air cavity described in pushing tow Between shoulder make described to cross the second elastic component for sliding backward of depression bar.

7. cassette cooker adjuster as claimed in claim 1, it is characterised in that：Described one end for crossing depression bar is provided with positioning groove, A locking plate is provided with by torsion spring on the valve body, the positioning groove protrudes from the valve during depression bar forward slip excessively External and described locking plate is caught in the positioning groove.

8. cassette cooker adjuster as claimed in claim 1, it is characterised in that：It is provided between the adjustment axis and the holding tank Seal receptacle, the adjustment axis drives the seal receptacle in being rotated in the holding tank, on the seal receptacle with first air flue, The corresponding position difference perforate of second air flue.

9. cassette cooker adjuster as claimed in claim 1, it is characterised in that：The cassette cooker adjuster also includes anti-gas-leak and filled Put, the air-leakage preventing device includes being fixed on the fixed seat of the valve body and slip is arranged in leakproof top in the fixed seat Bar, gas cylinder with it is described enter gas attachment means dock when leakproof push rod described in top pressure backward；It is arranged with linkage in the adjustment axis One blocking arm, the blocking arm is limited in the leakproof push rod rear when second air flue aligns with the air passing hole.

10. cassette cooker adjuster as claimed in claim 9, it is characterised in that：The air-leakage preventing device is also included positioned at described The 3rd elastic component within fixed seat, the 3rd elastic component leakproof push rod described in pushing tow forward.