CN207881434U - A kind of textile process drying unit - Google Patents

Abstract

The utility model discloses a kind of textile process drying units, including babinet, heating chamber, heater and transfer roller, it is equipped in the babinet and adjusts roll assembly, the adjusting roll assembly includes the installation axle that can be moved up and down, the actuator for driving the installation axle to act upwards and the rotating member being movably set in the installation axle.The utility model adjusts roll assembly by setting, the height of installation axle can be adjusted by actuator when the fabric to different-thickness, material is dried, and then adjust time of the different fabrics by baking oven, it ensure that the present apparatus can all reach different fabrics one good drying effect, increase the scope of application of device.

Description

A kind of textile process drying unit

Technical field

The utility model belongs to textile fabric processing technique field, more particularly, to a kind of textile process drying unit.

Background technology

It is typically necessary in textile fabric process and the fabric after dyeing is dried using drying unit, however by It is different in the material and thickness of different fabrics, and existing drying unit when the fabric that different, material differs greatly to thickness into When row drying, the drying effect reached is poor, and then reduces the scope of application of drying unit.

Utility model content

The utility model for overcome the deficiencies in the prior art, provides a kind of good drying effect, weaving applied widely Processing drying unit.

To achieve the goals above, the utility model uses following technical scheme：A kind of textile process drying unit, packet Include babinet, heating chamber, heater and transfer roller, be equipped in the babinet and adjust roll assembly, the adjustings roll assembly including can on The installation axle of lower action, the actuator for driving the installation axle to act upwards and turn being movably set in the installation axle Moving part.The utility model adjusts roll assembly by setting, can pass through drive when the fabric to different-thickness, material is dried Moving part adjusts the height of installation axle, and then adjusts time of the different fabrics by baking oven, ensure that the present apparatus can be to different faces Material all reaches a good drying effect, increases the scope of application of device.

Further, the transfer roller is equipped with elastic floating component, and the elastic floating component includes being set to the biography Expect multiple movable chambers on roller, the floating part that can be moved up and down in the movable chamber and for driving the floating part action Driving structure；By the way that elastic floating component is arranged on transfer roller, when fabric passes through the surface of transfer roller, floating part is in fabric Extruding force effect under move down, same floating part can apply an extruding force under the action of driving structure to fabric, and then make Between floating part and fabric there are larger frictional force, drive fabric to be conveyed conducive to transfer roller.

Further, the driving structure includes the guide rod being connected on the floating part, is set to the movable chamber bottom On wall with the elastic supporting member for supporting optical member guide rod matched active tunnel and be sheathed on the guide rod, the resilient support Part one end is connected with the floating part, and the other end is connected with the movable chamber bottom wall；It is realized by the setting of elastic supporting member for supporting optical member The up and down action of floating part acts on, and ensures that floating part has a larger extruding force when being in contact with fabric to fabric, in turn Ensure that has a larger frictional force between floating part and fabric, pass through the cooperation of guide rod and active tunnel, it is therefore prevented that floating Moving part shifts during floating up and down.

Further, the floating part is equipped with rubber layer；The setting of rubber layer not only increase floating part and fabric it Between frictional force, also reduce the damage to material.

Further, the pneumatic module that floats out is equipped in the babinet, the pneumatic module that floats out includes that can move up and down Support shaft, pivot bush unit in the roller in the support shaft, the gas passage in the support shaft, be set to the roller on Multiple through-holes for being connected with the gas passage and with the matched elastic support structure of the support shaft；The resilient support Structure includes the air storing cavity that is connected with the gas passage, and the air storing cavity can realize air inlet when the support shaft moves up and down And outlet；By the way that the support shaft that can be moved up and down is arranged in the heating chamber of babinet, and it is slidingly connected rotatably in support shaft Roller, in fabric transmit process, roller can apply fabric one downward active force, opposite, and fabric can go out roller An existing upward extruding force since support shaft can move up and down under the action of elastic support structure, and then works as certain section of both sides height When spending inconsistent fabric by cylinder surface, higher-height side is turned over downwards under the extruding force effect of roller on fabric Turn, and a lower height of other side of fabric can be flipped up, until end face material both sides are in sustained height and all can be with rollings Until cylinder surface fits closely, occurs the case where fold in transmit process to reduce fabric, additionally, due in fabric two While side is overturn, support shaft can also move down, and then squeeze air storing cavity so that gas in air storing cavity eventually by The through-hole discharge being arranged on roller, and when the consistent fabric of height on both sides passes through roller, extruding of the roller in this section of fabric It can rise again under force effect and return back to initial position, air storing cavity is by the inside air-breathing of through-hole at this time, due to the disengaging of air storing cavity Gas acts on the gas flow rate for accelerating through-hole outlet end on roller, and then realizing can also while reducing fabric fold and generating Enough accelerate the effect of drying rate.

Further, further include being set to the accommodating chamber heated on cavity wall and the internal elasticity in hollow setting originally Body, described elastic body one end coordinate with support shaft side wall sealing, and the other end coordinates with accommodating chamber bottom wall sealing, institute It states support shaft partial sidewall, accommodating chamber base wall portion and elastic body and encloses and be set as the air storing cavity；Since elastic body itself has It is flexible, and both ends are tightly connected with the support shaft side wall, accommodating chamber bottom wall respectively, so when support shaft moves down, Air storing cavity is compressed into and the portion gas in air storing cavity is compressed outside through-hole, when support shaft returns back to origin-location again When, air storing cavity realizes air inlet and the outlet of air storing cavity by the through-hole on the roller again air-breathing out of heating chamber, is storing up When air cavity outlet or outlet, the gas flow rate at via openings end has been dramatically speeded up, and then has accelerated the drying rate of fabric.

Further, the roller is equipped with the control assembly that through-hole is passed in and out for controlling gas；Pass through control assembly It is arranged and the through-hole on roller not with fabric contact area is enabled to remain off, so that the disengaging position of gas is all It concentrates in the region contacted with fabric on roller, improves the utilization rate of gas storage intracavity gas.

Further, the control assembly includes the cylindrical element being bolted in the through-hole, in the cylindrical element It crosses gas channel, matched set on the cyclic annular limiting section crossed in gas vias inner walls, with the cyclic annular limiting section for closing Stated the sphere in gas channel, be connected to the sphere cross gas vias inner walls between elastic component and be connected on the sphere Connecting rod；The connection bar part projects to outside through-hole；When fabric is in contact with cylinder surface subregion, fabric can squeeze The connecting rod of the subregion so that sphere is moved to the inside of roller, and then crosses gas channel quilt in the subregion It opens, realizes the inlet and outlet of gas, and then accelerate the gas flow rate in the region, to accelerate the drying speed to fabric Degree.

Further, the support shaft is equipped with the first limited post, and first limited post, which is equipped with, is connected to the gas The hole in channel and air storing cavity, the accommodating chamber bottom wall are equipped with the second limited post；Described return unit one end is sheathed on described Be connected on one limited post and with the support shaft, the other end be sheathed on second limited post and with the accommodating chamber bottom wall phase Even；It can prevent return unit from shifting in by compression process by the setting of the first limited post and the second limited post, in turn It ensure that return unit can normally work.

Further, structure realization is pressed in described elastic body one end by one and the sealing of the accommodating chamber bottom wall is matched It closes, the other end realizes that the sealing with the support shaft side wall coordinates by a connection structure.

Further, the structure of pressing includes the cyclic annular resettlement groove being set on the accommodating chamber bottom wall and can pass through bolt The annular that connection type is connected in the placement groove bottom wall presses part；When installing elastic body, since elastic body has Preferable telescopicing performance, and then one end of elastic body can be turned down outward and make it is pressed on to press part and resettlement groove bottom Between wall, then it is being fixed on the bottom wall of resettlement groove by bolt by part is pressed, it at this time can be tight by one end of elastic body Close being pressed on is pressed between part lower surface and placement groove bottom wall, to realize the sealing between elastic body and accommodating chamber bottom wall Connection.

Further, the connection structure includes the annular groove being set in the support shaft and can the side of being bolted Formula is connected to the metal ring on the groove roof；Likewise, metal ring is fixed on annular groove roof by bolt It goes up and one end of elastic body is pressed between annulus upper surface and annular groove roof, so that it may realize elastic body one The sealed connection at end and support shaft.

Further, the roller both ends are rotatably sheathed on by bearing in the support shaft respectively；Pass through bearing Setting not only realize the relative rotation between roller and support shaft, also effectively prevent gas from inner wall of rotary drum and support shaft Between gap in flow out.

In conclusion the utility model adjusts roll assembly by setting, can be dried in the fabric to different-thickness, material The height of installation axle can be adjusted when dry by actuator, and then adjusts time of the different fabrics by baking oven, ensure that the present apparatus A good drying effect can all be reached to different fabrics, increase the scope of application of device.

Description of the drawings

Fig. 1 is the structure sectional view one of the utility model.

Fig. 2 is enlarged drawing at A in Fig. 1.

Fig. 3 is the structure sectional view two of the utility model.

Fig. 4 is enlarged drawing at A in Fig. 3.

Fig. 5 is enlarged drawing at A in Fig. 4.

Fig. 6 is enlarged drawing at B in Fig. 4.

Fig. 7 is enlarged drawing at B in Fig. 3.

Fig. 8 is enlarged drawing at A in Fig. 7.

Fig. 9 is transfer roller structure sectional view in the utility model.

Figure 10 is enlarged drawing at A in Fig. 9.

Specific implementation mode

In order to make those skilled in the art be better understood from the utility model, below in conjunction with the utility model reality The attached drawing in example is applied, clear, complete description is carried out to the technical scheme in the embodiment of the utility model.

As Figure 1-10 shows, a kind of textile process drying unit, including babinet 1, the heating chamber in the babinet 11, two heaters 12 and 3 transfer rollers 13 on lower wall in the heating chamber, specifically, the both sides of babinet are set respectively It is the heating wire directly bought in the market to have feed inlet 14 and discharge port 15, the heater, and structure and operation principle are existing There is technology, this will not be repeated here, and for described 3 transfer rollers 13 respectively by motor-driven rotation, the fabric is wrapped over 3 successively The surface of transfer roller, and then can have the function that conveying fabric when transfer roller rotates under the driving effect of motor, it is described It is equipped in babinet 1 and adjusts roll assembly, the adjusting roll assembly includes the installation axle 10 that can be moved up and down, for driving the installation The actuator 20 that axis 10 acts upwards and the rotating member 30 being movably set in the installation axle 10, the installation axle are a metal Axis, the rotating member are a metallic cylinder, and the both ends of the metallic cylinder are set in by what a bearing rotated outside metal shaft respectively, Fabric is wrapped over the surface of the metallic cylinder in transmission process, to which metallic cylinder can be opposite under the friction force effect of fabric It is rotated with metal shaft, the actuator 20 is the cylinder directly bought in the market, and number is 2, and 2 cylinders are to set vertically It sets, top is fixedly mounted on the roof of heating chamber, and 2 cylinder piston rods are fixed together with the both ends of installation axle respectively, By adjusting the height of the flexible just controllable metal shaft of cylinder piston rod, and then reaches and change fabric stroke in heating chamber Effect controls the drying time of fabric so as to freely adjust the height of metal shaft according to thickness, the material of drying fabric, from And ensure that the present apparatus is carrying out different fabrics to be attained by an excellent drying effect when drying operation, expand the present apparatus The scope of application.

Further, the transfer roller 13 is equipped with elastic floating component, and the elastic floating component includes set on described Multiple movable chambers 131 on transfer roller 13, can be in the floating part 132 moved up and down in the movable chamber 131 and for driving The driving structure of the action of floating part 132 is stated, specifically, on the evenly spaced setting transfer roller side wall of multiple movable chambers, The driving structure include the guide rod 133 being connected on the floating part 132, be set to 131 bottom wall of the movable chamber on The elastic supporting member for supporting optical member 135 guide rod 133 matched active tunnel 134 and be sheathed on the guide rod, the elasticity 135 one end of support element is connected with the floating part 132, and the other end is connected with 131 bottom wall of the movable chamber, specifically, described floating Moving part is a strip metal block, and the top surface of metal derby is cambered surface, and the guide rod is that top is welded on the metal derby bottom surface One metal cylinder, the active tunnel are that the sky in cylindrical structure being inserted into for the metal cylinder is arranged on movable chamber bottom wall Chamber, the elastic supporting member for supporting optical member are a compressed spring, which is set in outside guide rod, and top and the bottom surface of metal derby are solid Even, the bottom end of spring and the bottom wall of movable chamber are connected, and under normal condition, metal derby is projected in the elastic force effect lower part of spring Outside movable chamber, when fabric passes through the surface of transfer roller, fabric contacts with the top surface of metal derby and squeezes metal derby to movable chamber Interior movement, likewise, metal derby has a larger extruding force, and then metal derby and fabric to fabric under the action of the spring Between frictional force it is larger so that transfer roller rotation when can be more easy to drive fabric conveyed.

Preferably, the floating part 132 is equipped with rubber layer 136, specifically, the rubber layer is arranged on the top of floating part On face, the setting of rubber layer not only increases the frictional force between floating part and fabric, also reduces the damage to material.

Further, the pneumatic module that floats out is equipped in the babinet 1, the pneumatic module that floats out includes that can move up and down Metal support shaft 2, pivot bush unit in the metal roller 3 in the support shaft 2, the gas passage 21 in the support shaft 2, Multiple through-holes 31 for being connected with the gas passage 21 on the roller 3 and with 2 matched elasticity of the support shaft Support construction；The elastic support structure includes the air storing cavity 4 that is connected with the gas passage 21, and the air storing cavity 4 can be in institute It states when support shaft 2 moves up and down and realizes air inlet and outlet, specifically, 3 both ends of the roller are rotatable by a bearing 9 respectively It is sheathed in the support shaft 2, which can directly buy from the market, and structure and principle are all the prior art, herein not It repeating, cross section is in E shapes on the gas passage, and both ends open is separately positioned on the side wall at support shaft both ends, wherein Between opening be arranged at the middle part of support shaft, which is the fluting of a strip, and multiple through-holes are evenly spaced It is arranged on roller, and the length direction of each through-hole is arranged along the radial direction of roller, the both ends open of each through-hole is set respectively Set on the outboard sidewalls of roller, the number of the air storing cavity is 2, respectively with the gas passage at support shaft both ends is set Opening in communication, in fabric transmit process, roller can apply fabric one downward active force, on the contrary, fabric can be to rolling There is a upward extruding force in cylinder, since support shaft can move up and down under the action of elastic support structure, and then works as certain section two When height inconsistent fabric in side passes through cylinder surface, higher-height side is downward under the extruding force effect of roller on fabric Overturning, and a lower height of other side of fabric can be flipped up, until end face material both sides are in sustained height and all can be with Until cylinder surface fits closely, occurs the case where fold in transmit process to reduce fabric, additionally, due in fabric While both sides are overturn, support shaft can also move down, and then squeeze air storing cavity so that the gas in air storing cavity finally leads to The through-hole discharge being arranged on roller is crossed, and when the consistent fabric of height on both sides passes through roller, roller is squeezed this section of fabric Can rise again under pressure effect and returns back to initial position, air storing cavity is by the inside air-breathing of through-hole at this time, due to air storing cavity into Outlet acts on the gas flow rate for accelerating through-hole outlet end on roller, and then realizes while reducing fabric fold and generating also It can accelerate the effect of drying rate.

Further, the elastic support structure further includes the accommodating chamber 5 being set on 11 inner wall of the heating chamber and inside The elastic body 7 of hollow setting, the top of the elastic body are tightly connected with 2 side wall of the support shaft, the bottom of elastic body End and 5 bottom wall of accommodating chamber are tightly connected, specifically, the rectangular parallelepiped structure that the accommodating chamber is vertically arranged, number is 2, and 2 A accommodating chamber is separately positioned on the left and right sides wall of heating chamber, and the elastic body 7 is made of rubber material, and is opened for both ends The tubular construction of mouth setting, 2 partial sidewall of the support shaft, 5 base wall portion of accommodating chamber and elastic body 7 enclose and are set as the gas storage Chamber 4, since elastic body itself has elasticity, so when support shaft moves down, air storing cavity be compressed into and in air storing cavity Portion gas compressed outside through-hole, when support shaft returns back to origin-location again, air storing cavity passes through the through-hole on roller Again the air-breathing out of heating chamber, and then air inlet and the outlet of air storing cavity are realized, in air storing cavity outlet or outlet, dramatically speed up The gas flow rate at via openings ends, and then accelerate the drying rate of fabric.

Further, the elastic support structure further includes the reset being set between the support shaft and accommodating chamber bottom wall Part, it is preferred that the return unit 6 is set in the elastic body 7, specifically, the return unit 6 is a compression being vertically arranged Spring acts on the resilient support of support shaft by compressed spring so that support shaft can occur up and down in fabric transmission process It is mobile so that the volume of air storing cavity changes, realize air storing cavity into outlet, and then accelerate the gas at via openings end Body flow velocity, accelerates drying rate.

Further, the roller 3 is equipped with the control assembly that venthole is passed in and out for controlling gas, specifically, described Control assembly includes the cylindrical element 8 being bolted in the through-hole 31, crossing gas channel 81, being set to institute in the cylindrical element 8 It stated the cyclic annular limiting section 82 on 81 inner wall of gas channel, matched with the cyclic annular limiting section 82 for closing the gas channel excessively Sphere 83, the elastic component 84 that is connected to the sphere 83 and crosses between 81 inner wall of gas channel and be connected on the sphere 83 Connecting rod 85；85 part of the connecting rod projects to outside through-hole, specifically, the cylindrical element 8, sphere 83 and connecting rod are all by moulding Material material is made, and the cavity of the interior cylindrical of the cylindrical element 8 forms the gas channel 81 excessively, and vehicle is formed in the through-hole Internal thread, the cylindrical element lateral wall get on the bus be formed with the matched external screw thread of the internal thread, just by the engagements of internal and external threads Cylindrical element can be screwed in through-hole, the annular stop portion is the convex shoulder structure extended outward to form by crossing gas vias inner walls, The elastic component is a rubber band, and normal condition lower sphere matches under the stretching action of rubber band with the convex shoulder, incited somebody to action Gas channel is closed, and when fabric is in contact with cylinder surface subregion, fabric can squeeze the connecting rod of the subregion, So that sphere is moved to the inside of roller, and then the gas channel of crossing in the subregion is opened, and realizes the entrance of gas And discharge, and then the gas flow rate in the region is accelerated, to accelerate the drying rate to fabric, pass through setting for control assembly It sets so that gathering in the region being in contact with fabric on roller of more being concentrated of the gas in air bag, and then reduces in air bag The waste of gas flow maximumlly improves place's gas flow rate with fabric contact site, has further speeded up drying rate.

Further, the support shaft 2 is equipped with the first limited post 24, and first limited post 24 is equipped with described in connection The hole 241 of gas passage 21 and air storing cavity 4,5 bottom wall of the accommodating chamber are equipped with the second limited post 51, specifically, the first limit The metal column and its number that position column 24 is vertically arranged are 2, and top is respectively welded at the both ends of support shaft, second limit Position column 51 is also that its bottom end of the metal column being vertically arranged is welded on the bottom wall of accommodating chamber, the upper and lower ends point of the return unit It is not set in outside the first limited post 24 and the second limited post 51, and is connected respectively with support shaft 2 and 5 bottom wall of accommodating chamber, by the The setting of one limited post and the second limited post can prevent return unit from shifting in by compression process, and then ensure that reset Part can normally work.

Further, structure realization is pressed in 7 bottom end of the elastic body by one and the sealing of 5 bottom wall of the accommodating chamber is matched It closes, further, the structure of pressing includes the cyclic annular resettlement groove 52 being set on 5 bottom wall of the accommodating chamber and can be connected by bolt The annular that the mode of connecing is connected on 52 bottom wall of the resettlement groove presses part 53, and the part 53 that presses is made of metal material, specifically , the annular is pressed is respectively equipped with threaded hole in part and placement groove bottom wall, and when installation, the bottom end of elastic body is first passed through ring Shape presses 53 internal cavities of part, since elastic body has preferable telescopicing performance, and then can be outside by the bottom end of elastic body It turns down and makes it is pressed on to press between part and placement groove bottom wall, then will be pressed by being screwed into bolt in threaded hole again Part is fixed on the bottom wall of resettlement groove, can closely be pressed on one end of elastic body press part lower surface and placement at this time Between groove bottom wall, to realize the sealed connection between elastic body and accommodating chamber bottom wall.

Further, the sealing with 2 side wall of the support shaft is realized on the top of the elastic body 7 by a connection structure Cooperation, the connection structure include the annular groove 22 being set in the support shaft 2 and mode can be bolted be connected to Metal ring 23 on 22 roof of the groove, specifically, specifically, being set respectively on the metal ring and annular groove roof Have a threaded hole, when installation, the bottom end of elastic body first passed through to the internal cavities of metal ring 23, due to elastic body have compared with Good telescopicing performance, and then the bottom end of elastic body can be turned down outward and make it by metal ring upper surface and annular groove Between roof, then metal ring is fixed on the roof of annular groove by being screwed into bolt in threaded hole again, at this time The top of elastic body can be closely pressed between metal ring upper surface and resettlement groove roof, to realize elastic body Sealed connection between support shaft.

Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments. It is obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention Every other embodiment should all belong to the range of the utility model protection.

Claims (10)

1. a kind of textile process drying unit, including babinet（1）, heating chamber（11）, heater（12）And transfer roller（13）, It is characterized in that：The babinet（1）Interior be equipped with adjusts roll assembly, and the adjusting roll assembly includes the installation axle that can be moved up and down （10）, for driving the installation axle（10）The actuator acted upwards（20）And it is movably set in the installation axle（10）On Rotating member（30）.

2. textile process drying unit according to claim 1, it is characterised in that：The transfer roller（13）It is equipped with bullet Property floatation element, the elastic floating component include be set to the transfer roller（13）On multiple movable chambers（131）, can be in described Movable chamber（131）The floating part of interior up and down action（132）And for driving the floating part（132）The driving structure of action.

3. textile process drying unit according to claim 2, it is characterised in that：The driving structure includes being connected to The floating part（132）On guide rod（133）, be set to the movable chamber（131）On bottom wall with the guide rod（133）Match The active tunnel of conjunction（134）And it is sheathed on the elastic supporting member for supporting optical member on the guide rod（135）, the elastic supporting member for supporting optical member（135）One End and the floating part（132）It is connected, the other end and the movable chamber（131）Bottom wall is connected.

4. textile process drying unit according to claim 3, it is characterised in that：The floating part（132）It is equipped with Rubber layer（136）.

5. textile process drying unit according to claim 1, it is characterised in that：The babinet（1）Interior be equipped with is floated Go out pneumatic module, the pneumatic module that floats out includes the support shaft that can be moved up and down（2）, pivot bush unit is in the support shaft（2）On Roller（3）, be set to the support shaft（2）On gas passage（21）, be set to the roller（3）The upper and gas passage （21）The multiple through-holes being connected（31）And with the support shaft（2）Matched elastic support structure；The resilient support knot Structure includes and the gas passage（21）Be connected air storing cavity（4）, the air storing cavity（4）It can be in the support shaft（2）It is dynamic up and down Air inlet and outlet are realized when making.

6. textile process drying unit according to claim 5, it is characterised in that：Further include being set to the heating chamber （11）Accommodating chamber on inner wall（5）With the internal elastic body in hollow setting（7）, described elastic body one end and the support Axis（2）Side wall sealing cooperation, the other end and the accommodating chamber（5）Bottom wall sealing cooperation, the support shaft（2）Partial sidewall, appearance Receive chamber（5）Base wall portion and elastic body（7）It encloses and is set as the air storing cavity（4）.

7. textile process drying unit according to claim 6, it is characterised in that：Further include being set to the accommodating chamber （5）Bottom wall and support shaft（2）Between return unit（6）, the return unit（6）Set on the elastic body（7）It is interior.

8. textile process drying unit according to claim 5, it is characterised in that：The roller（3）It is equipped with and is used for It controls gas and passes in and out the through-hole（31）Control assembly.

9. textile process drying unit according to claim 8, it is characterised in that：The control assembly includes being bolted in The through-hole（31）Interior cylindrical element（8）, be set to the cylindrical element（8）Interior crosses gas channel（81）, be set to and described cross gas channel （81）Cyclic annular limiting section on inner wall（82）And the cyclic annular limiting section（82）It matches for closing the ball for crossing gas channel Body（83）, be connected to the sphere（83）With gas channel excessively（81）Elastic component between inner wall（84）And it is connected to the sphere （83）On connecting rod（85）；The connecting rod（85）Part projects to outside through-hole.

10. textile process drying unit according to claim 7, it is characterised in that：The support shaft（2）It is equipped with the One limited post（24）, first limited post（24）It is equipped with and is connected to the gas passage（21）And air storing cavity（4）Hole （241）, the accommodating chamber（5）Bottom wall is equipped with the second limited post（51）；The return unit（6）One end is sheathed on first limit Position column（24）It is upper and with the support shaft（2）It is connected, the other end is sheathed on second limited post（51）It is upper and with the receiving Chamber（5）Bottom wall is connected.