CN106369215A

CN106369215A - Telescopic mechanism

Info

Publication number: CN106369215A
Application number: CN201610755116.5A
Authority: CN
Inventors: 张玉莲
Original assignee: Individual
Current assignee: Haining Home Textile Industrial Base Investment Development Co ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2017-02-01
Anticipated expiration: 2036-08-29
Also published as: CN106369215B

Abstract

The invention relates to a telescopic mechanism. The telescopic mechanism comprises a shell, a telescopic rod, a compression spring, a limiting sleeve and a movable pin. The telescopic rod comprises a base part and a push rod part. A base part containing hole is formed in the base part. A rail groove is formed in the side face of the base part, the base part of the telescopic rod is sleeved with the limiting sleeve in a sliding manner, and a limiting sleeve sliding groove is formed in the side wall of the limiting sleeve. One end of the movable pin penetrates the limiting sleeve sliding groove to stretch into the rail groove, and the other end of the movable pin is reserved in the limiting sleeve sliding groove. A shell containing cavity is formed in the shell, a shell opening communicating with the shell containing cavity is formed in the top of the shell, the limiting sleeve is arranged in the shell containing cavity, and the outer end, away from the base part, of the push rod part of the telescopic rod stretches out of the shell from the shell opening. The compression spring is arranged in the base part containing hole, one end of the compression spring abuts against the hole bottom of the base part containing hole, and the other end of the compression spring abuts against the shell. The telescopic mechanism is simple in structure, and the telescopic motion has good stability and reliability.

Description

Telescoping mechanism

Technical field

The present invention relates to a kind of telescoping mechanism.

Background technology

In prior art, it is generally press telescopic valve for the drain valve on the sanitary bath equipments such as hand basin, bathtub, its Including valve body, valve element and telescoping mechanism.After this kind of drain valve is using a period of time, solidss (especially human hair) are deposited on The water stream channel in valve body is led to block in valve body, impeded drainage.Even excessive human hair is hung on valve element and/or telescopic machine Produce in structure valve element cannot stretching motion or telescoping mechanism the problems such as lost efficacy, reduce service life.

Additionally, the telescoping mechanism structure of existing drain valve is complex, generally require two relatively rotate toothed Tumbler coordinates.

Content of the invention

It is an object of the invention to provide a kind of simple telescoping mechanism of structure.

Above-mentioned purpose is achieved by the following technical solution:

A kind of telescoping mechanism, including shell, expansion link, compression spring, stop collar and removable pin；This expansion link includes base portion And the top end face upwardly extending push rod portion from base portion, it is provided with the base portion extend in from the bottom of base portion towards base portion in this base portion Accommodating hole；The side of this base portion is provided with rail groove, this rail groove include descending section with descending section parallel and in a distance Up section, the upper lead segment being connected between up section of end and descending section of head end and the end being connected to descending section Lower lead segment and up section of head end between；The side of this lower lead segment is provided with the side channel connecting with lower lead segment；Wherein, should The upper groove side of upper lead segment includes one section of first tilting section, one section of changeover portion and one section of second tilting section, this first tilting section Low side connects up section of end, the upper end of the high-end connection changeover portion of this first tilting section, and the lower end of this changeover portion connects should The low side of the second tilting section, the head end of descending section of the high-end connection of this second tilting section；Should be relative with the upper groove side of upper lead segment The lower groove side of upper lead segment be in that left and right two ends are high and be available for the Vulpes planar that the interposition of removable pin stop sets low；Upper lead segment The right-hand member of lower groove side connect up section of end, the left end of the lower groove side of upper lead segment connects descending section of head end；Lead under this The upper groove side drawing section includes segmental arc and one section of the 3rd tilting section in one section, and one end of this interior segmental arc connects descending section of end, should The other end of interior segmental arc connects the low side of the 3rd tilting section, the head end of up section of the high-end connection of the 3rd tilting section；Should with The lower groove side of the relative lower lead segment in the upper groove side of lead segment includes one section of outer arc segments and one section of linkage section, and this side channel includes side channel The left groove side right groove side of side channel relative with the left groove side of side channel, the bottom land of side channel and the side relative with the bottom land of side channel Groove is imported and exported；One end of this outer arc segments connects descending section of end, and the other end of this outer arc segments connects the upper of the left groove side of side channel End, the lower end of the left groove side of this side channel connects the left end of the bottom land of side channel, and the right-hand member of the bottom land of this side channel connects the right groove of side channel The lower end of side, the upper end of the right groove side of this side channel connects one end of linkage section, and the other end of this linkage section connects up section of head End；This linkage section is to tilt, and wherein, the upper end of the right groove side of this side channel connects the low side of linkage section, this linkage section high-end Connect up section of head end；This side channel imports and exports the joint being located at lower lead segment and side channel；This stop collar is hollow and two End opening, this stop collar is slidably placed on outside the base portion of this expansion link, and the side wall of this stop collar is provided with bar shaped and runs through The stop collar chute of the side wall of stop collar, the length direction of this stop collar chute is perpendicular to the direction of motion of expansion link；This activity Pin one end stretch in rail groove through stop collar chute, the other end indwelling of this removable pin in stop collar chute, removable pin Length direction activity in the guiding lower edge stop collar chute of stop collar chute；This inside the shell is provided with shell containing cavity, this shell Top be provided with the shell aperture connecting with shell containing cavity, this stop collar is installed on shell and houses intracavity, the pushing away of this expansion link Bar portion away from base portion outer end outside shell aperture stretches out in shell；This compression spring is placed in base portion accommodating hole, and this pressure One end of contracting spring is offseted with the bottom hole of base portion accommodating hole, and the other end of this compression spring and shell offset；This shell houses Intracavity is provided with spacing stopper；When the bottom face of the base portion of this expansion link and spacing stopper offset, it is maximum that this expansion link is in retraction Position；When the bottom land of this removable pin and side channel offsets, this expansion link is in and stretches out maximum position；This expansion link is stretching out dominant bit Put motion and retraction maximum position between；The upper end of the high-end and changeover portion of this first tilting section is connected by the first arc section, The head end of high-end and descending section of this second tilting section is connected by the second arc section；This removable pin and the first arc section or When two arc sections offset, the bottom face of the base portion of this expansion link is offseted with spacing stopper.

Present configuration is simple, and stretching motion has good stability and reliability.

Brief description

Fig. 1 shows the schematic perspective view of the drain valve of present invention application, and wherein, valve element is in the open position；Fig. 2 illustrates The cross section structure diagram of the drain valve of present invention application, wherein, valve element is in the open position；Fig. 3 shows that the present invention should The schematic perspective view of drain valve, wherein, valve element is in the closed position；Fig. 4 shows cuing open of the drain valve of present invention application Depending on structural representation, wherein, valve element is in the closed position；Fig. 5 shows that the stereo decomposing of the drain valve of present invention application is illustrated Figure；Fig. 6 shows the valve element of drain valve of present invention application and the perspective exploded view of filter screen；Fig. 7 shows that the present invention should The perspective exploded view of another angle of the valve element of drain valve and filter screen；Fig. 8 shows the drain valve of present invention application Valve element and filter screen cross section structure diagram, wherein, valve element and filter screen are decomposed；Fig. 9 shows present invention application The valve body of drain valve and the perspective exploded view of sealing ring；Figure 10 shows the valve body of drain valve and the sealing of present invention application The perspective exploded view of another angle of ring；Figure 11 shows the valve body of drain valve of present invention application and the section view of sealing ring Structural representation, wherein, valve body and sealing ring is decomposed；Figure 12 shows the telescoping mechanism of the drain valve of present invention application Perspective exploded view；Figure 13 a shows the cross section structure diagram of the telescoping mechanism of drain valve of present invention application, its In, removable pin rests in the centre position of the lower groove side of lead segment；Figure 13 b shows the flexible of the drain valve of present invention application The cross section structure diagram of mechanism, wherein, removable pin is in side channel；Figure 14 shows the flexible of the drain valve of present invention application The cross section structure diagram of mechanism, wherein, telescoping mechanism is decomposed；Figure 15 shows stretching of the drain valve of present invention application One orthographic projection schematic diagram of the base portion of contracting bar；Figure 16 a shows that the work of the telescoping mechanism of drain valve of present invention application is former Reason figure one, wherein, removable pin is in side channel but is not offseted with the bottom land of side channel；Figure 16 b shows the draining of present invention application The fundamental diagram two of the telescoping mechanism of valve, wherein, removable pin is in lower lead segment and is offseted with the 3rd tilting section；Figure 16 c Show the fundamental diagram three of the telescoping mechanism of drain valve of present invention application, wherein, removable pin enters up section of head end； Figure 16 d shows the fundamental diagram four of the telescoping mechanism of drain valve of present invention application, wherein, removable pin and the first arc section Offset；Figure 16 e shows the fundamental diagram five of the telescoping mechanism of drain valve of present invention application, and wherein, removable pin is from the The position that one arc section offsets falls to the lower groove side of lead segment, and removable pin is offseted with the lower groove side of upper lead segment；Figure 16 f Show the fundamental diagram six of the telescoping mechanism of drain valve of present invention application, wherein, removable pin rests in lead segment The centre position of lower groove side；Figure 16 g shows the fundamental diagram seven of the telescoping mechanism of drain valve of present invention application, wherein, Removable pin moves to the second tilting section from the centre position of lower groove side resting in upper lead segment, and removable pin and the second tilting section Offset；Figure 16 h shows the fundamental diagram eight of the telescoping mechanism of drain valve of present invention application, wherein, removable pin and second Arc section offsets；Figure 16 i shows the fundamental diagram nine of the telescoping mechanism of drain valve of present invention application, wherein, removable pin Move to descending section of end；Figure 16 j shows the fundamental diagram ten of the telescoping mechanism of drain valve of present invention application, its In, moveable pins to side channel are imported and exported；Figure 16 k shows the fundamental diagram of the telescoping mechanism of drain valve of present invention application 11, wherein, removable pin is in side channel, and removable pin is offseted with the bottom land of side channel；Figure 17 shows the a-a line along Fig. 2 Sectional view, wherein, valve element projection is offseted with dislocation position block, and valve element projection and dislocation position block are represented by dotted lines；Figure 18 Show the sectional view of the b-b line along Fig. 2, wherein valve element projection and dislocation position block offsets；Figure 19 shows Figure 17's On the basis of, valve element is rotated in the counterclockwise direction the schematic diagram after 90 °；Figure 20 shows on the basis of Figure 18, by valve element edge Schematic diagram after 90 ° of rotate in an anti-clockwise direction；Figure 21 shows the three-dimensional signal of the 3rd cylinder of drain valve of present invention application Figure.

Specific embodiment:

A kind of drain valve as shown in Fig. 1 to Figure 21, including valve body 10, valve element 20 and telescoping mechanism 30；This valve body 10 sets There are water inlet 101, outlet 102 and the water stream channel 103 extending to outlet 102 from water inlet 101；This telescoping mechanism 30 is pacified It is loaded in valve body 10, in the present embodiment, this telescoping mechanism 30 is located on water stream channel 103；This valve element includes mandrel and is available for using The gland 201 of family pressing, one end of this mandrel is connected with gland 201, and the other end of this mandrel inserts valve body from water inlet 101 It is connected in 10 and with telescoping mechanism 30, especially, valve is inserted from water inlet 101 in the lower end of the enlarged diameter section of lower mandrel of this mandrel It is connected in body 10 and with telescoping mechanism 30；When gland 201 is pressed, this telescoping mechanism 30 order about valve element in an open position and Switch between one closed position；Being provided between this valve element 20 and valve body 10 selectively makes water stream channel 103 be blocked or quilt Unobstructed switching mechanism；When water stream channel 103 is blocked, water is prohibited from outlet 102 exits valve body 10；Lead in current Road 103 by unobstructed when, water is allowed to from outlet 102 exits valve body 10；When valve element 20 is in the open position, switching mechanism Make water stream channel 103 unobstructed；When valve element 20 is in the closed position, switching mechanism makes water stream channel 103 be blocked；Wherein, Figures 1 and 2 show that, valve element 20 is in the open position, water stream channel 103 is unobstructed, water is allowed to from outlet 102 dump valve Outside body 10；Fig. 3 and Fig. 4 shows that valve element 20 is in the closed position, and water stream channel 103 is blocked, and water is prohibited from outlet 102 Outside exits valve body；It is provided with to be on water stream channel 103 in valve body 10 and be used for intercepting solidss (such as granule, human hair etc.) And allow the filter screen 40 that water passes through.

Especially, filter screen 40 is assemblied in valve body 10 in removable mode.This technical scheme is by being set to filter screen Removable mode, is easy to the cleaning to filter screen.

This filter screen 40 includes filter screen outer ring 401, the filter screen inner ring 402 being enclosed in filter screen outer ring 401 and located at filter screen The dictyosome 403 with mesh between outer ring 401 and filter screen inner ring 402, this filter screen inner ring 402 surrounds an inner circle of apertures 404；This valve It is provided with filter screen support lug 104 ringwise, this filter screen 40 is inserted in valve body 10 from the water inlet 101 of valve body in body 10, and in When filter screen outer ring 41 and filter screen support lug 104 offset, filter screen 40 is supported in filter screen support lug 104；This valve element 20 with It is additionally provided with the clutch structure that can stop or allow valve element 20 from detaching valve body 10, this clutch structure combines shape one between valve body 10 Switch between state and a disassembled form；When clutch structure is in assembled state, valve element 20 is prevented from detaching valve body 10；In clutch When structure is in disassembled form, valve element 20 is allowed to detach valve body 10；The mandrel of this valve element is slidably disposed through the inner ring of filter screen Perforation 404, this valve element 20 is provided with and lifts portion below filter screen, and the outside diameter d 1 that this lifts portion is more than the diameter of inner circle of apertures D2, so that when valve element 20 detaches valve body 10, the portion that lifts takes filter screen 40 outside valve body 10 out of.This technical scheme is detaching the same of valve element When take filter screen out of, the dismounting of filter screen can be easy to, further, since valve element (i.e. mandrel) switches between open position and closed position Telescopic movable frequency higher, by being designed as being slidably matched to inner circle of apertures and mandrel so that mandrel can opposed screen be lived Dynamic, band electric filter in valve element active procedure so can be avoided to move and so that filter screen is shaken, lead to solidss to be slided Fall, filter screen lost efficacy.

Clutch structure is made to switch between assembled state and disassembled form when gland 201 is twisted.This technical scheme can Detach valve element in order to user reverses gland manually and dismantle filter screen simultaneously, be convenient to clean filter screen.

Specifically:

This clutch structure includes valve element locking plate 105 ringwise in valve body 10 and the valve element on mandrel is convex Block 202；This valve element locking plate 105 is provided with locking plate breach 106, and this valve element locking plate 106 surrounds and is available for mandrel and (especially descends mandrel 205) the valve element perforation 107 passing through；In valve element projection 202 and locking plate breach 106 to timing it is allowed to convex 202 pieces of valve element passes through valve Core locking plate 105, now, this clutch structure is in disassembled form；When valve element projection 202 is with locking plate breach 106 dislocation, valve element is convex Block 202 is stopped by valve element locking plate 105 and forbids that valve element projection 202 passes through valve element locking plate 105, now, this clutch structure is in group Conjunction state；Mandrel (i.e. valve element) selectively makes valve element projection 202 align with locking plate breach 106 or misplace when rotating, mandrel It is to be connected with being relatively fixed with gland 201, reverse gland 201 to order about mandrel rotation.Clutch structure disclosed in this technical scheme Simply, easy to implement.The sealing-plug 203 on mandrel that this switching mechanism includes be installed on valve element；The mandrel of this valve element includes Mandrel 204 and lower mandrel 205；On this, the upper end 206 of mandrel is connected with gland 201 in removable mode, under mandrel on this End 207 is provided with mandrel jack 208；On this, mandrel 204 is slidably disposed through the inner circle of apertures 404 of filter screen so that filter screen 40 is placed on Outside upper mandrel 204, the diameter d2 of this inner circle of apertures is more than or equal to the diameter d3 of upper mandrel；This lower mandrel 205 is in multidiameter Shape, including reduced diameter section 209 and enlarged diameter section 210, the lower end of reduced diameter section 209 is connected with the upper end of enlarged diameter section 210, and The lower end of reduced diameter section 209 forms mandrel step surface 211 with the joint of the upper end of enlarged diameter section 210；This sealing-plug 203 is provided with Sealing-plug centre bore 212, the upper end of the reduced diameter section 209 of this lower mandrel passes through sealing-plug centre bore 212 and with removable side In the upper mandrel jack 208 of formula insertion so that sealing-plug 203 be clamped in mandrel lower end 207 and mandrel step surface 211 it Between, to realize the installation of sealing-plug 203；The diameter d4 of this sealing-plug centre bore is more than or equal to the reduced diameter section of lower mandrel Diameter d5, and the diameter d4 of sealing-plug centre bore is less than the diameter d6 of the enlarged diameter section of lower mandrel；This valve element projection 202 located under The lower end of the enlarged diameter section 210 of mandrel, and this valve element projection 202 radially extending along the enlarged diameter section 210 of lower mandrel.This technology Scheme can be easy to the dismounting of each part of valve element and sealing-plug, is easy to the cleaning of each part and sealing-plug to valve element.

In the present embodiment, the quantity of valve element projection 202 is 2, and this 2 valve element projections 202 are symmetrically distributed in lower mandrel 205 Both sides.The quantity of locking plate breach 106 is identical with the quantity of valve element projection 202, and that is, the quantity of locking plate breach 106 is 2, and this 2 Individual locking plate breach 106 is symmetrically distributed in the both sides of inner circle of apertures.

The upper end of reduced diameter section 209 of this lower mandrel and upper mandrel jack 208 screw thread cooperation；This gland 201 is provided with connection Post 213, this connecting post 213 is provided with connecting post jack 214, and the upper end 206 of upper mandrel is inserted connecting post in removable mode and inserted In hole 214；The upper end 206 of mandrel and the cooperation of connecting post jack 214 screw thread on this.

This switching mechanism also includes the sealing ring 50 being installed in valve body；This sealing-plug 203 includes filling in body 215, this plug Enter the Rotary-table that the direction that body 215 is the past top surface 217 filling in body in bottom surface 216 filling in body always without leave is gradually increased, this plug The top surface 217 entering body is provided with along the plug lip 218 ringwise radially extending filling in body 215, this plug lip 218 For lifting portion, this sealing-plug centre bore 212 extends to from the bottom surface 216 filling in body to be filled in the top surface 217 of body and fills in body to run through 215；This sealing ring 50 includes sealing ring main body 501 and the sealing ring convex radially extending along sealing ring main body 501 ringwise Edge 502, this sealing ring main body 501 surrounds the sealing ring perforation 503 being available for filling in body 215 insertion, this sealing ring perforation 503 straight Footpath gradually decreases along the direction filling in body 215 insertion this sealing ring perforation 503；From the past top filling in body in bottom surface 216 filling in body The direction that body 215 extracts this sealing ring perforation 503 is as filled in the direction in face 217；Bore a hole in filling in body 215 insertion sealing ring When in 503, sealing ring perforation 503 is stuffed into body 215 and blocks, and sealing ring flange 502 is offseted with plug lip 218, valve element 20 In the closed position；

In fill in body 215 extract sealing ring perforation 503 outer when, sealing ring perforation 503 is opened, sealing ring flange 502 from Open plug lip 218, valve element 20 is in the open position.

Lower mandrel 205 passes through sealing ring perforation 503.

This technical scheme is passed through to be designed as filling in without leave always the bottom surface of body toward the direction of the top surface filling in body to filling in body The Rotary-table that is gradually increased, to be its diameter to sealing ring perforated design gradually subtract along the direction filling in body and inserting the perforation of this sealing ring Few structure, to strengthen sealing fiting effect, simultaneously when filling in body insertion sealing ring perforation, seals ring flange and sealing-plug Flange offsets it is also possible to strengthen sealing effectiveness.

This telescoping mechanism 30 includes shell 301, expansion link 302, compression spring 303, stop collar 304 and removable pin 305；

This expansion link 302 includes base portion 306 and the upwardly extending push rod portion 307 of top end face 363 from base portion, this base portion It is provided with the base portion accommodating hole 309 extend in from the bottom face 308 of base portion to base portion 306 in 306；

As shown in figure 15, the side 310 of this base portion is provided with rail groove 311, this rail groove 311 include descending section 312 and under Row section 312 parallel and in a distance up section 313, be connected to up section of end 314 and descending section of head end 315 it Between upper lead segment 316 and be connected to the lower lead segment 319 between descending section of end 317 and up section of head end 318； The side of this lower lead segment 319 is provided with the side channel 320 connecting with lower lead segment 319；Wherein,

On this upper groove side of lead segment 316 include 321, one section of changeover portion of one section of first tilting section 322 and one section second incline Tiltedly section 323, the low side 324 of this first tilting section connects up section of end 314, and high-end the 325 of this first tilting section connected Cross the upper end 326 of section, the lower end 327 of this changeover portion connects the low side 328 of this second tilting section, this second tilting section high-end 329 head ends 315 connecting descending section；

This first tilting section 321 is parallel with the second tilting section 323, and inclines with second in high-end the 325 of the first tilting section Tiltedly high-end the 329 of section are contour；

The lower groove side 362 of upper lead segment that should be relative with the upper groove side of upper lead segment is in left and right two ends 330,331 Gao Erke For the low Vulpes planar in the centre position 332 of removable pin stop；The right-hand member 331 of the lower groove side of upper lead segment connects up section of end 314, the left end 330 of the lower groove side of upper lead segment connects descending section of head end 315；

High-end the 325 of this first tilting section and second tilting section low side 328 be respectively positioned on lead segment lower groove side upper Side, and this first tilting section high-end 325 and second tilting section low side 328 be respectively positioned on lead segment lower groove side interposition Put 332 right side, and this first tilting section high-end 325 and second the low side 328 of tilting section be respectively positioned on the lower groove of lead segment The left side of the right-hand member 331 of side；

The upper groove side of this lower lead segment includes segmental arc 333 and one section of the 3rd tilting section 334 in one section, this interior segmental arc 333 One end connects descending section of end 317, and the other end of this interior segmental arc 333 connects the low side 335 of the 3rd tilting section, the 3rd inclination High-end the 336 of section connect up section of head end 318；

The lower groove side of lower lead segment that should be relative with the upper groove side of lower lead segment includes one section of outer arc segments 337 and one section of connection Section 338, this side channel 320 includes the left groove side 339 right groove side 340 of side channel relative with the left groove side 339 of side channel of side channel, side The bottom land 341 of groove and the side channel relative with the bottom land 341 of side channel import and export 342；

One end of this outer arc segments 337 connects descending section of end 317, and the other end of this outer arc segments 337 connects a left side for side channel The upper end 343 of groove side, the lower end 344 of the left groove side of this side channel connects the left end 345 of the bottom land of side channel, the right side of the bottom land of this side channel The lower end 347 of the right groove side of end 346 connection side channel, the upper end 348 of the right groove side of this side channel connects one end of linkage section 338, should The other end of linkage section 338 connects up section of head end 318；

This side channel imports and exports 342 joints being located at lower lead segment 319 and side channel 320；

This side channel imports and exports 342 lower sections being located at the 3rd tilting section 334, and the low side 335 of the 3rd tilting section is located at side channel Import and export 342 left side, high-end the 336 of the 3rd tilting section is located at the right side that side channel imports and exports 342；

In the present embodiment, this linkage section 338 is to tilt, and wherein, the upper end 378 of the right groove side of this side channel connects linkage section Low side 349, high-end the 350 of this linkage section connects up section of head end 318；

The circle that the circle that this interior segmental arc 333 is located is located with outer arc segments 337 is concentric circular；

This stop collar 304 is hollow and both ends open, and this stop collar 304 is slidably placed on the base portion of this expansion link Outside 306, the side wall 352 of this stop collar is provided with bar shaped and runs through the stop collar chute 353 of the side wall of stop collar, this stop collar The length direction of chute 353 is perpendicular to the direction of motion of expansion link 302；

One end of this removable pin 305 is stretched in rail groove 311 through stop collar chute 353, the other end of this removable pin 305 Indwelling in stop collar chute 353, the length direction of the guiding lower edge stop collar chute 353 in stop collar chute 353 for the removable pin Activity；

It is provided with shell containing cavity 354, the top of this shell 301 is provided with and is connected with shell containing cavity 354 in this shell 301 Shell aperture 355, this stop collar 304 is installed in shell containing cavity 354, and the base portion 306 of this expansion link is in shell containing cavity Activity in 354, the push rod portion of this expansion link away from base portion outer end 356 outside shell aperture 355 stretches out in shell 301, and The lower end of the outer end 356 in the push rod portion of this expansion link and the enlarged diameter section 210 of lower mandrel offsets it is clear that valve element (include gland, Sealing-plug, mandrel) can relative telescopic bar rotate, when rotating in order to valve element, clutch structure may be selected to be located in In assembled state or disassembled form；

The push rod portion of this expansion link the inner relative with the outer end in the push rod portion of expansion link is connected with base portion 306；

This compression spring 303 is placed in base portion accommodating hole 309, and one end of this compression spring 303 and base portion accommodating hole Bottom hole 357 offsets, and the other end of this compression spring 303 and shell 301 offset, especially, the other end of this compression spring 303 Offset with the bottom of chamber 358 of shell containing cavity；It is provided with spacing stopper 359 in this shell containing cavity 354；The bottom of the base portion of this expansion link When end face 308 and spacing stopper 359 offset, this expansion link 302 is in retraction maximum position；This removable pin 305 and the groove of side channel When bottom 341 offsets, this expansion link 302 is in and stretches out maximum position；

This expansion link 302 is stretching out motion between maximum position and retraction maximum position；

High-end the 325 of this first tilting section are connected by the first arc section 360 with the upper end 326 of changeover portion, and this second inclines Tiltedly high-end the 329 of section are connected by the second arc section 361 with descending section of head end 315, the circle at this first arc section 360 place, The circle that second arc section 361 is located and the radius of removable pin 305 are equal；

When this removable pin 305 and the first arc section 360 or the second arc section 361 offset, the bottom of the base portion of this expansion link End face 308 is offseted with spacing stopper 359；This technical scheme is passed through to arrange spacing stopper 359, so that this removable pin and first When arc section or the second arc section offset, the bottom face 308 of base portion is just also offseted with spacing stopper 359, so can carry The stability of high expansion link motion and reliability, for example, avoid expansion link and removable pin clamping stagnation in relative movement existing As and lead to expansion link cannot move；

When removable pin 305 is in side channel 320, this valve element 20 is in the open position；

When removable pin 305 rests in the centre position 332 of lower groove side of upper lead segment, this valve element 20 is in close stance Put.

This compression spring 303 has makes expansion link 302 from retraction maximum position to becoming of stretching out that maximum position moves all the time Gesture.

The operation principle of the telescoping mechanism of the present invention is as follows:

As illustrated in fig 16 a, when removable pin 305 is in side channel 320, (in figure is not shown, the external force of this applying to apply external force Can act on expansion link 302) order about expansion link 302 and overcome the active force of compression spring 303 and into shell containing cavity 354 Make retraction campaign, removable pin 305 first from side channel import and export 342 enter lead segment 319, then the with the upper groove side of lower lead segment Three tilting sections 334 offset (as shown in fig 16b), and are subject to the guiding of the 3rd tilting section 334 of upper groove side of lower lead segment to up The head end 318 (as shown in figure 16 c) of section, then move to up section of end 314 from up section of head end 318 along up section 313 And enter lead segment 316, then offset with the first tilting section 321 of the upper groove side of upper lead segment, and it is subject to the upper groove of lead segment First tilting section 321 of side is guided to the first arc section 360 and is offseted (as shown in figure 16d) with the first arc section 360, now should The bottom face 308 of the base portion of expansion link is offseted with spacing stopper 359, and expansion link 302 is in retraction maximum position.In revocation external force Afterwards, the effect of compressed spring 303, compression spring 303 is ordered about expansion link 302 and is stretched out motion, removable pin 305 and upper lead segment Lower groove side 362 offset that (as shown in figure 16e, especially removable pin 305 is supreme with the right-hand member 331 of the lower groove side from upper lead segment The lower groove side of one section between the centre position 332 of lower groove side of lead segment upper lead segment offsets), by the lower groove side of upper lead segment The centre position 332 of the 362 lower groove side being directed to lead segment, and finally rest in the interposition of the lower groove side of lead segment Put 332 (as shown in Figure 16 f), now the body 215 of filling in of sealing-plug inserts in the sealing ring perforation 503 of sealing ring, at valve element 20 In closed position.

As shown in Figure 16 f, when removable pin rests in the centre position 332 of lower groove side of upper lead segment, apply external force (figure Not shown in, the external force of this applying can act on expansion link 302) order about the effect that expansion link 302 overcomes compression spring 303 Power and make retraction again into shell containing cavity 354 and move, removable pin 305 first the second tilting section with the upper groove side of upper lead segment 323 offset (as shown in Figure 16 g), and guided to the second arc section 361 simultaneously by the second tilting section 323 of the upper groove side of lead segment Offset (as shown in Figure 16 h) with the second arc section 361, now the bottom face 308 of the base portion of this expansion link and spacing stopper 359 phase Support, expansion link is in retraction maximum position, this removable pin 305 enters descending section of head end 315.After revocation external force, compressed The effect of spring 305, compression spring 305 is ordered about expansion link 302 and is stretched out motion, and removable pin 305 is from descending section of head end 315 edge Move to descending section of end 317 for descending section 312 and enter lower lead segment 319 (as shown in Figure 16 i), and with lower lead segment under The outer arc segments 337 of groove side offset, and guided to side channel import and export 342 (as schemed by the outer arc segments 337 of the lower groove side of lower lead segment Shown in 16j), and fall into (as shown in Figure 16 a or Figure 16 k) in side channel 320 from side channel import and export 342, as shown in Figure 16 k, when When the bottom land 341 of removable pin 305 and side channel offsets, this expansion link 302 is in and stretches out maximum position.

This technical scheme can simplify the structure of telescoping mechanism by rail groove reasonable in design, is easy to manufacture, just In expansion link is realized with telescopic movable, and stretching motion has higher stability and reliability；

This technical scheme can be easy to activity in order to the assembling of removable pin and stop collar and expansion link by arranging stop collar Pin stretches into cooperation in rail groove, can carry out spacing activity to removable pin by setting stop collar chute on stop collar.

It is in the open position in valve element 20, under the outer end 356 in the push rod portion of expansion link and the enlarged diameter section 210 of lower mandrel End offsets, and valve element projection 202 is offseted with valve element locking plate 105, and removable pin 305 is in side channel 320 but the not bottom land 341 with side channel Offset (as illustrated in fig 16 a)；This technical scheme is so that valve element is in the thrust of the outer end in the push rod portion by expansion link all the time Effect, it is to avoid loosening occurs in valve element, and improves the precision of cooperation.

The section of the base portion 306 of this expansion link is square, and this stop collar 304 is square sleeve, so so that stop collar The activity of expansion link is carried out spacing；

The two opposite side surfaces 310 of the base portion of this expansion link are respectively equipped with a rail groove 311, on this stop collar 304 with set The side 310 corresponding side wall 352 having the base portion of the expansion link of rail groove is respectively equipped with a stop collar chute 353, each stop collar Chute 353 is respectively provided with a removable pin 305；One rail groove 311, a stop collar chute 353 and a removable pin 305 form one group and stretch Contracting activity operations unit, this technical scheme passes through opposite sides one group of telescopic movable operating unit respectively of the base portion in expansion link The reliability and stability of motion can be improved；

This shell 301 is put together by two structure identical half-shell, in order to the dismounting of telescoping mechanism；

The protuberance 364 ringwise of shell aperture 355 is provided around on this shell 301；

The rubber outside push rod portion that this telescoping mechanism also includes be placed on expansion link stretches sealing shroud 365, and this rubber stretches close One end of big envelope 365 is installed on protuberance 364, and the other end of the flexible sealing shroud 365 of this rubber is installed in the push rod of expansion link On the outer end 356 in portion.This technical scheme is passed through the flexible sealing shroud of setting rubber and can be played waterproof effect, prevents water from entering shell Accommodating intracavity and stop collar, removable pin, expansion link, compression spring are impacted.

This valve body includes being sequentially communicated and forms the first cylinder 108 of this article of water stream channel 103, the second cylinder the 109, the 3rd Cylinder 110, the 4th cylinder 111 and the 5th cylinder 112, these cylinders are all hollow and both ends open；

The upper end 115 of the lower end 114 of this first cylinder and the second cylinder, the lower end 116 of the second cylinder and the 3rd cylinder Upper end 117, the lower end 118 of the 3rd cylinder and the upper end 119 of the 4th cylinder and the lower end 120 of the 4th cylinder and the 5th cylinder Upper end 121 is connected in removable mode respectively；The upper end open of this first cylinder is water inlet 101, under the 5th cylinder End opening is outlet 102；The cavity volume that is filled with water of the sanitary bath equipments such as hand basin, bathtub can be inserted in the upper end 113 of this first cylinder In (not shown), and the lower end 122 of the 5th cylinder can be used for connecting drain pipe (not shown)；The supporting of this filter screen is convex , in the first cylinder 108, especially, filter screen support lug 104 is on the medial wall of the first cylinder 108 for edge 104；This second The sealing ring being provided with cylinder 109 ringwise is fixedly mounted with flange 123, and especially, sealing ring is fixedly mounted with flange 123 located at the second cylinder On 109 medial wall, sealing ring is fixedly mounted with (being fixedly mounted with as fixed installation described in the present embodiment) and is fixedly mounted with flange in sealing ring, should Sealing ring is fixedly mounted with flange 123 and surrounds single order scalariform perforation 124, and this sealing ring flange 502 is supported in this stepped perforation 124 tool On some perforation step surfaces 125, this perforation step surface 125 is provided with step surface groove 126 ringwise, seals ring flange 503 It is provided with sealing ring projection 504 ringwise, this sealing ring projection 504 is absorbed in step surface groove 126；This valve element locking plate 105 In the 3rd cylinder 110；It is provided with to positive definite towards the side of the upper end open 130 of the 3rd cylinder on this valve element locking plate 105 Position block 134, in valve element 20 rotate counterclockwise and valve element projection 202 with above aligning position block 134 and offseting when, valve element projection 202 are aligned with locking plate breach 106, now it is allowed to valve element projection 202 from the upper end open 130 of the 3rd cylinder toward the 3rd cylinder The direction of lower ending opening 131 passes through valve element locking plate 105；The one of the lower ending opening 131 of direction the 3rd cylinder on this valve element locking plate 105 Side is provided with down and aligns position block 135, in valve element 20 rotate counterclockwise and make valve element projection 202 with align position block 135 when offseting, and valve element projection 202 is aligned with locking plate breach 106, now it is allowed to valve element projection 202 is opened from the lower end of the 3rd cylinder The direction of mouth 131 upper end open 130 toward the 3rd cylinder passes through valve element locking plate 105；Towards the 3rd cylinder on this valve element locking plate 105 The side of lower ending opening 131 be additionally provided with dislocation position block 136, make valve element projection 202 in valve element 20 along rotating clockwise When offseting with dislocation position block 136, valve element projection 202 is misplaced with locking plate breach 106, and now, valve element projection 202 is locked by valve element Piece 105 stops and forbids the side of the upper end open 130 toward the 3rd cylinder for the lower ending opening 131 from the 3rd cylinder for the valve element projection 202 To through valve element locking plate 105；Figure 17 and Figure 18 shows that valve element projection 202 and dislocation position block 136 offset schematic diagram, now Valve element 20 (i.e. gland 201) is rotated counterclockwise after 90 °, valve element projection 202 with align position block 135 and offset (as schemed Shown in 19 and Figure 20)；Figure 19 and Figure 20 show valve element projection 202 with align position block 135 and offset schematic diagram, now will Valve element 20 (i.e. gland 201) along after rotating clockwise 90 °, valve element projection 202 and dislocation position block 136 offset (as Figure 17 and Shown in Figure 10)；

The operation principle of the clutch structure of the present embodiment is as follows:

The process of valve element is installed: manually valve element is inserted valve element projection 202 and valve element locking plate 105 in valve body from water inlet When the side of the upper end open 130 of upper direction the 3rd cylinder offsets, rotate counterclockwise valve element 20 (i.e. gland 201) up to valve element Projection 202 offsets with above aligning position block 134, and now valve element projection 202 and locking plate breach 106 align, and pushes away and so that valve element 20 is continued Continue and be inserted into toward valve body 10, valve element projection 202 is from the lower ending opening 131 of the 3rd cylinder toward the upper end open 130 of the 3rd cylinder Direction passes through valve element locking plate 105, and the lower end of the enlarged diameter section 210 of the lower mandrel of valve element passes through valve element perforation 107 and expansion link The outer end 356 in push rod portion offset, in the outer end in lower end and the push rod portion of expansion link of the enlarged diameter section 210 of the lower mandrel of valve element After 356 offset, continuing to push away makes valve element 20 be inserted into toward valve body 10, after continuing into a segment distance, by valve element 20 (i.e. gland 201) Along rotating clockwise 90 °, valve element projection 202 is offseted with dislocation position block 136, now unclamps handss, and valve element 20 is subject to expansion link 302 Effect, expansion link 302 pushes away makes valve element 20 make the lower ending opening towards the 3rd cylinder on valve element projection 202 and valve element locking plate 105 131 side offsets, and completes the installation of valve element therefrom；

Detach the process of valve element: reverse after gland 201 makes valve element rotate counterclockwise 90 ° manually, valve element projection 202 with Align position block 135 to offset, then lift valve element 20 manually until valve element 20 detaches valve body 10.

Be additionally provided with the lower ending opening 131 of direction the 3rd cylinder from valve element locking plate 105 in 3rd cylinder 110 one is lateral The guide cylinder 137 that the lower ending opening 131 of the 3rd cylinder extends；This guide cylinder 137 is hollow and both ends open, however, The upper end open of this guide cylinder 137 is blocked by valve element locking plate 105, and valve element perforation 107 is connected with guide cylinder 137, valve element The enlarged diameter section 210 of lower mandrel lower end pass through valve element perforation 107 after insertion guide cylinder 137 in；

Position block 135 and dislocation position block 136 is aligned all on the medial wall of guide cylinder 137 under this, and under Align position block 135 and dislocation position block 136 lower ending opening 131 of direction the 3rd cylinder all from valve element locking plate 105 The lower ending opening 131 of one lateral 3rd cylinder extends, this technical scheme so that valve element open position and closed position it Between switching stretching motion during, be limited to down to align position block and dislocation position block all the time, even if valve element is flexible Rotate in motor process, also without departing under align position block and dislocation position block between limit rotatable scope Interior, to avoid the occurrence of the phenomenon generation that valve element cannot detach valve body；

It is provided with, in 4th cylinder 111, be taken in 138 and upper limit baffle plate 139,138 both ends opens of being taken in, upper limit Baffle plate 139 located at be taken in 138 upper end open at, upper limit baffle plate 139 is provided with and flexible avoids hole 140；

138 interior and and upper limits of being taken in are inserted in the upper end 366 of the shell of telescoping mechanism from the lower ending opening 141 being taken in Baffle plate 139 offsets, and the outer end 356 in the push rod portion of the expansion link of telescoping mechanism is big with lower mandrel through flexible avoidance hole 140 The lower end of diameter segment 210 offsets；

It is provided with lower snare 142 and lower limit baffle plate 143 in 5th cylinder 112, lower snare 142 both ends open, lower limit Baffle plate 143 is at the lower ending opening of lower snare 142；

The lower end 367 of the shell of telescoping mechanism is inserted in lower snare 142 from the upper end open 144 of lower snare and and lower limit Baffle plate 143 offsets.

This technical scheme by by valve body be divided into 5 cylinders (i.e. the first cylinder, the second cylinder, the 3rd cylinder, the 4th Body and the 5th cylinder), the processing and manufacturing of each cylinder can be easy to, be easy to the dismounting of telescoping mechanism.This technical scheme is passed through in setting Snare and lower snare can be easy to the location and installation of telescoping mechanism.

This valve body also includes the first retainer 145, the second retainer 146, the 3rd retainer 147 and the 4th retainer 148, these retainers It is equipped with female thread；

The lower end 114 of this first cylinder, the upper end 115 of the second cylinder, the lower end 116 of the second cylinder, the 3rd cylinder upper The lower end 118 of end the 117, the 3rd cylinder, the upper end of the upper end 119, the lower end 120 of the 4th cylinder and the 5th cylinder of the 4th cylinder 121 are equipped with external screw thread；The upper end 115 of the lower end 114 of the first cylinder and the second cylinder is respectively with the first retainer 145 screw thread even Connect, threadeded with the second retainer 146 respectively with the upper end 117 of the 3rd cylinder in the lower end 116 of the second cylinder, under the 3rd cylinder 118 threadeded with the 3rd retainer 147 respectively with the upper end 119 of the 4th cylinder in end, the lower end 120 of the 4th cylinder and the 5th cylinder Upper end 121 threaded with the 4th retainer 148 respectively；

It is provided with around the circumferentially-spaced distribution of valve element locking plate 105 between the medial wall of the 3rd cylinder 110 and valve element locking plate 105 3rd cylinder dowel 149, forms one the 3rd cylinder water hole 150, this technical side between adjacent two the 3rd cylinder dowels 149 Case is reasonable in design, is suitable to the formation of this water stream channel；The medial wall of the 4th cylinder 111 and being taken in is provided with around upper between 138 4th cylinder dowel 151 of the circumferentially-spaced distribution of snare 138, forms one the 4th between adjacent two the 4th cylinder dowels 151 Cylinder water hole 152, this Technical Design rationally, is suitable to the formation of this water stream channel；The medial wall of the 5th cylinder 112 with It is provided with the 5th cylinder dowel 153 around the circumferentially-spaced distribution of lower snare 142, adjacent two the 5th cylinders are even between lower snare 142 Connect formation one the 5th cylinder water hole 154 between muscle 153, this Technical Design rationally, is suitable to the formation of this water stream channel.

In the present embodiment, filter screen, sealing ring, the 3rd cylinder water hole, the 4th cylinder water hole and the 5th cylinder water hole It is respectively positioned on this water stream channel.The water of entrained solids thing (such as granule, human hair etc.) passes through during the first cylinder by filter screen Filter.

This water stream channel sequentially passes through filter screen 40, the first cylinder from the upper end open (i.e. water inlet 101) of the first cylinder Lower ending opening 127, the upper end open 128 of the second cylinder, sealing ring bore a hole the 503, second cylinder lower ending opening the 129, the 3rd The upper end open 130 of cylinder, the 3rd cylinder cross water, the lower ending opening 131 of the 150, the 3rd cylinder, the upper end open of the 4th cylinder 132nd, the 4th cylinder water hole 152, the lower ending opening 133 of the 4th cylinder, the upper end open 155 of the 5th cylinder, the 5th cylinder mistake The lower ending opening (i.e. outlet 102) of water hole 154 and the 5th cylinder.

Claims

1. a kind of telescoping mechanism it is characterised in that:

Including shell, expansion link, compression spring, stop collar and removable pin；

This expansion link includes base portion and the top end face upwardly extending push rod portion from base portion, is provided with the bottom from base portion in this base portion The base portion accommodating hole extending towards in base portion；

The side of this base portion is provided with rail groove, and this rail groove includes descending section of and in a distance upper parallel with descending section Row section, the upper lead segment being connected between up section of end and descending section of head end and be connected to descending section of end with Lower lead segment between up section of head end；The side of this lower lead segment is provided with the side channel connecting with lower lead segment；Wherein,

On this, the upper groove side of lead segment includes one section of first tilting section, one section of changeover portion and one section of second tilting section, and this first inclines Tiltedly the low side of section connects up section of end, the upper end of the high-end connection changeover portion of this first tilting section, the lower end of this changeover portion Connect the low side of this second tilting section, the head end of descending section of the high-end connection of this second tilting section；

The lower groove side of upper lead segment that should be relative with the upper groove side of upper lead segment is in left and right two ends height and is available for removable pin stop The Vulpes planar that interposition sets low；The right-hand member of the lower groove side of upper lead segment connects up section of end, the lower groove side of upper lead segment Left end connects descending section of head end；

The upper groove side of this lower lead segment includes segmental arc and one section of the 3rd tilting section in one section, and one end of this interior segmental arc connects descending section End, the other end of this interior segmental arc connects the low side of the 3rd tilting section, the head of up section of the high-end connection of the 3rd tilting section End；

The lower groove side of lower lead segment that should be relative with the upper groove side of lower lead segment includes one section of outer arc segments and one section of linkage section, this side Groove includes the left groove side right groove side of side channel relative with the left groove side of side channel, the bottom land of side channel and the groove with side channel of side channel The relative side channel in bottom is imported and exported；

One end of this outer arc segments connects descending section of end, and the other end of this outer arc segments connects the upper end of the left groove side of side channel, should The lower end of the left groove side of side channel connects the left end of the bottom land of side channel, and the right-hand member of the bottom land of this side channel connects under the right groove side of side channel End, the upper end of the right groove side of this side channel connects one end of linkage section, and the other end of this linkage section connects up section of head end；

This linkage section is to tilt, and wherein, the upper end of the right groove side of this side channel connects the low side of linkage section, this linkage section high-end Connect up section of head end；

This side channel imports and exports the joint being located at lower lead segment and side channel；

This stop collar is hollow and both ends open, and this stop collar is slidably placed on outside the base portion of this expansion link, this stop collar Side wall be provided with bar shaped and run through the stop collar chute of the side wall of stop collar, the length direction of this stop collar chute perpendicular to The direction of motion of expansion link；

One end of this removable pin is stretched in rail groove through stop collar chute, and the other end indwelling of this removable pin is in stop collar chute Interior, the length direction activity of the guiding lower edge stop collar chute in stop collar chute for the removable pin；

This inside the shell is provided with shell containing cavity, and the top of this shell is provided with the shell aperture connecting with shell containing cavity, and this is spacing Set is installed on shell and houses intracavity, the push rod portion of this expansion link away from base portion outer end outside shell aperture stretches out in shell；

This compression spring is placed in base portion accommodating hole, and one end of this compression spring is offseted with the bottom hole of base portion accommodating hole, and is somebody's turn to do The other end of compression spring and shell offset；

This shell houses intracavity and is provided with spacing stopper；

When the bottom face of the base portion of this expansion link and spacing stopper offset, this expansion link is in retraction maximum position；

When the bottom land of this removable pin and side channel offsets, this expansion link is in and stretches out maximum position；

This expansion link is stretching out motion between maximum position and retraction maximum position；

The upper end of the high-end and changeover portion of this first tilting section is connected by the first arc section, this second tilting section high-end with The head end of row section passes through the second arc section and connects；

When this removable pin and the first arc section or the second arc section offset, the bottom face of the base portion of this expansion link and spacing stopper Offset.

2. telescoping mechanism according to claim 1 it is characterised in that: be applied to drain valve, this drain valve include valve body and Valve element；

This valve body is provided with water inlet, outlet and the water stream channel extending to outlet from water inlet；

This telescoping mechanism is installed in valve body；

The gland that this valve element includes mandrel and is available for user's pressing, one end of this mandrel is connected with gland, and this mandrel is another End is from water inlet insertion valve body；

When gland is pressed, this telescoping mechanism orders about valve element and switches between an open position and a closed position；

It is provided between this valve element and valve body and so that water stream channel is blocked or by unobstructed switching mechanism；

When valve element is in the open position, switching mechanism makes water stream channel unobstructed；

When valve element is in the closed position, switching mechanism makes water stream channel be blocked；

When removable pin is in side channel, this valve element is in the open position；

When removable pin rests in the centre position of lower groove side of upper lead segment, this valve element is in the closed position；

It is provided with valve body and the filter screen allowing for intercepting solidss water to pass through is on water stream channel.

3. telescoping mechanism according to claim 2 it is characterised in that:

This filter screen include filter screen outer ring, the filter screen inner ring being enclosed in filter screen outer ring and located at filter screen outer ring and filter screen inner ring it Between the dictyosome with mesh, this filter screen inner ring surrounds an inner circle of apertures；

It is provided with filter screen support lug ringwise, this filter screen is inserted in valve body from the water inlet of valve body in this valve body, and in filter screen When outer ring and filter screen support lug offset, filter screen is supported in filter screen support lug；

It is additionally provided with the clutch structure that can stop or allow valve element from detaching valve body, this clutch structure is one between this valve element and valve body Switch between assembled state and a disassembled form；

When clutch structure is in assembled state, valve element is prevented from detaching valve body；

When clutch structure is in disassembled form, valve element is allowed to detach valve body；

The mandrel of this valve element is slidably disposed through the inner circle of apertures of filter screen, and this valve element is provided with and lifts portion below filter screen, The external diameter that this lifts portion is more than the diameter of inner circle of apertures, so that when valve element detaches valve body, the portion that lifts takes filter screen outside valve body out of.

4. telescoping mechanism according to claim 3 it is characterised in that:

This clutch structure is included located at the valve element locking plate ringwise in valve body and the valve element projection on mandrel；

This valve element locking plate is provided with locking plate breach, and this valve element locking plate surrounds the valve element perforation being available for that mandrel passes through；

In valve element projection and locking plate breach to timing it is allowed to valve element projection passes through valve element locking plate, now, this clutch structure is in be torn open Divide state；

When valve element projection is misplaced with locking plate breach, valve element projection is stopped by valve element locking plate and forbids that valve element projection is locked through valve element Piece, now, this clutch structure is in assembled state；

Mandrel selectively makes valve element projection align with locking plate breach or misplace when rotating, and mandrel and gland are to be relatively fixed ground Connect, reverse gland to order about mandrel rotation.

5. telescoping mechanism according to claim 4 it is characterised in that:

The sealing-plug on mandrel that this switching mechanism includes be installed on valve element；

The mandrel of this valve element includes mandrel and lower mandrel；

On this, the upper end of mandrel is connected with gland in removable mode, and on this, the lower end of mandrel is provided with mandrel jack；

On this, mandrel is slidably disposed through the inner circle of apertures of filter screen so that filter screen is placed on outside mandrel, and the diameter of this inner circle of apertures is big In or be equal to upper mandrel diameter；

This lower mandrel is in ladder shaft-like, including reduced diameter section and enlarged diameter section, the lower end of reduced diameter section and the upper end of enlarged diameter section Connect, and the lower end in reduced diameter section forms mandrel step surface with the joint of the upper end of enlarged diameter section；

This sealing-plug is provided with sealing-plug centre bore, and the upper end of the reduced diameter section of this lower mandrel passes through sealing-plug centre bore and with removable The mode of dress is inserted in mandrel jack, so that sealing-plug is clamped between the lower end of mandrel and mandrel step surface；

This sealing-plug centre bore with diameter greater than or be equal to lower mandrel reduced diameter section diameter, and sealing-plug centre bore is straight Footpath is less than the diameter of the enlarged diameter section of lower mandrel；

The lower end of this enlarged diameter section located at lower mandrel for valve element projection, and the radial direction of this enlarged diameter section along lower mandrel for valve element projection Extend；

The outer end in push rod portion of this expansion link is offseted with the lower end of the enlarged diameter section of lower mandrel.

6. telescoping mechanism according to claim 5 it is characterised in that:

This switching mechanism also includes the sealing ring being installed in valve body；

This sealing-plug includes filling in body, and this fills in the direction that body is the past top surface filling in body in bottom surface filling in body always without leave gradually Increased Rotary-table, the top surface that this fills in body is provided with along the plug lip ringwise radially extending filling in body, this sealing Plug flange is to lift portion, and this sealing-plug centre bore extends to from the bottom surface filling in body to be filled in the top surface of body and fill in body to run through；

This sealing ring includes sealing ring main body and the sealing ring flange radially extending along sealing ring main body ringwise, this sealing Ring main body surrounds the sealing ring perforation being available for filling in body insertion, and the diameter of this sealing ring perforation is worn along filling in body and insert this sealing ring The direction in hole gradually decreases；

When filling in body insertion sealing ring perforation, sealing ring perforation is stuffed into body closure, and valve element is in the closed position；

In fill in body extract sealing ring perforation outer when, sealing ring bore a hole be opened, valve element is in the open position.

7. telescoping mechanism according to claim 6 it is characterised in that:

It is in the open position in valve element, valve element projection is offseted with valve element locking plate, removable pin is in side channel but the not groove with side channel Bottom offsets；

The section of the base portion of this expansion link is square, and this stop collar is square sleeve, and the opposite sides face of the base portion of this expansion link is divided It is not provided with a rail groove, this stop collar is respectively equipped with a stop collar with the side of the base portion of expansion link being provided with rail groove and slides Groove, each stop collar chute is respectively provided with a removable pin；

The radius of circle that this first arc section is located, the circle that the second arc section is located and removable pin is this equal shell by two Individual half-shell is put together；

The protuberance ringwise of shell aperture is provided around on this shell；

The rubber outside push rod portion that this telescoping mechanism also includes be placed on expansion link stretches sealing shroud, and this rubber stretches the one of sealing shroud End is installed on protuberance, and the other end of the flexible sealing shroud of this rubber is installed on the outer end in push rod portion of expansion link.

8. telescoping mechanism according to claim 7 it is characterised in that:

This valve body includes being sequentially communicated and forms the first cylinder of this article of water stream channel, the second cylinder, the 3rd cylinder, the 4th cylinder And the 5th cylinder, these cylinders are all hollow and both ends open；

The upper end of the upper end of the lower end of this first cylinder and the second cylinder, the lower end of the second cylinder and the 3rd cylinder, the 3rd cylinder The upper end of lower end and the 4th cylinder and the lower end of the 4th cylinder and the 5th cylinder upper end respectively in removable mode even Connect；

The upper end open of this first cylinder is water inlet, and the lower ending opening of the 5th cylinder is outlet；

This filter screen support lug is in the first cylinder；

The sealing ring being provided with ringwise in this second cylinder is fixedly mounted with flange, and this sealing ring is fixedly mounted with flange and surrounds single order scalariform perforation, This sealing ring flange is supported on the perforation step surface that this stepped perforation has, and this perforation step surface is provided with ringwise Step surface groove, sealing ring flange is provided with sealing ring projection ringwise, and this sealing ring projection is absorbed in step surface groove；

This valve element locking plate is in the 3rd cylinder；

On this valve element locking plate, the side of the upper end open of direction the 3rd cylinder is provided with and aligns position block, in valve element along counterclockwise Rotate and make valve element projection with when above aligning position block and offseting, valve element projection is aligned with locking plate breach；

On this valve element locking plate, the side of the lower ending opening of direction the 3rd cylinder is provided with down and aligns position block, in valve element along counterclockwise Rotate and make valve element projection with align position block and offset when, valve element projection is aligned with locking plate breach；

It is additionally provided with dislocation position block towards the side of the lower ending opening of the 3rd cylinder, in valve element along clockwise on this valve element locking plate When rotating and so that valve element projection is offseted with dislocation position block, valve element projection is misplaced with locking plate breach；

It is additionally provided with 3rd cylinder under lateral 3rd cylinder of lower ending opening of direction the 3rd cylinder from valve element locking plate The guide cylinder that end opening extends；

Align under this position block and dislocation position block all on the medial wall of guide cylinder, and under align position block and Dislocation position block prolongs towards the lower ending opening of lateral 3rd cylinder of lower ending opening of the 3rd cylinder all from valve element locking plate Stretch；

It is provided with 4th cylinder and be taken in and upper limit baffle plate, both ends open of being taken in, upper limit baffle plate is located at being taken in At upper end open, upper limit baffle plate is provided with flexible avoidance hole；

Being taken in interior and offseted with upper limit baffle plate from the lower ending opening insertion being taken in the upper end of the shell of telescoping mechanism, stretches The outer end in the push rod portion of the expansion link of mechanism passes through the flexible lower end avoiding the enlarged diameter section of mandrel under Kong Eryu to offset；

It is provided with lower snare and lower limit baffle plate in 5th cylinder, lower snare both ends open, lower limit baffle plate is located at lower snare At lower ending opening；

The lower end of the shell of telescoping mechanism offsets from the lower snare of the upper end open insertion of lower snare and with lower limit baffle plate.

9. telescoping mechanism according to claim 8 it is characterised in that:

This valve body also includes the first retainer, the second retainer, the 3rd retainer and the 4th retainer, and these retainers are equipped with female thread；

The lower end of this first cylinder, the upper end of the second cylinder, the lower end of the second cylinder, the upper end of the 3rd cylinder, the 3rd cylinder Lower end, the upper end of the 4th cylinder, the lower end of the 4th cylinder and the upper end of the 5th cylinder are equipped with external screw thread；

Threadeded with the first retainer respectively in the upper end of the lower end of the first cylinder and the second cylinder, the lower end of the second cylinder and the 3rd Threadeded with the second retainer respectively in the upper end of cylinder, the lower end of the 3rd cylinder and the upper end of the 4th cylinder respectively with the 3rd retainer Threaded, threadeded with the 4th retainer respectively with the upper end of the 5th cylinder in the lower end of the 4th cylinder；

It is provided with the 3rd cylinder around the circumferentially-spaced distribution of valve element locking plate between the medial wall of the 3rd cylinder and valve element locking plate to be connected Muscle, forms one the 3rd cylinder water hole between adjacent two the 3rd cylinder dowels；

The medial wall of the 4th cylinder and be provided with the 4th cylinder dowel around circumferentially-spaced distribution of being taken between being taken in, phase Form one the 4th cylinder water hole between adjacent two the 4th cylinder dowels；

It is provided with the 5th cylinder dowel around the circumferentially-spaced distribution of lower snare, phase between the medial wall of the 5th cylinder and lower snare Form one the 5th cylinder water hole between adjacent two the 5th cylinder dowels.