阅读说明：本技术 一种按压式冲水阀 (Push type flashing valve ) 是由 赵高杰 于 2020-05-09 设计创作，主要内容包括：本发明涉及一种按压式冲水阀,其延时部包括延时桶、出水盖、封水头,延时桶伸入安装孔且延时桶开口边沿抵触在隔板上,延时桶位于入水腔的侧壁靠近延时桶开口一端设有入水孔,出水盖一侧抵触在延时桶开口处,出水盖另一侧抵触在阀盖上,出水盖中心设有供压杆插入的出水孔,出水盖靠近阀盖一侧设有出水槽,出水槽从出水孔延时至出水盖外侧壁,封水头在延时桶内滑动,封水头固定在压杆远离按压部一端,封水头靠近压杆一端侧面设有与出水孔抵触的封水密封圈,封水头远离压杆一端侧面设有与延时桶内壁抵触的延时密封圈,封水头远离压杆一端设有回流孔,回流孔连通至封水密封圈与延时密封圈之间的封水头外侧面。本发明具有冲水阀延时关闭的效果。(The invention relates to a push type flushing valve, the time delay part of which comprises a time delay barrel and a water outlet cover, the water sealing head, the delay bucket stretches into the mounting hole and the opening edge of the delay bucket is abutted on the partition plate, the side wall of the water inlet cavity of the delay bucket is provided with a water inlet hole near one end of the opening of the delay bucket, one side of the water outlet cover is abutted on the opening of the delay bucket, the other side of the water outlet cover is abutted on the valve cover, the center of the water outlet cover is provided with a water outlet hole for inserting the pressure rod, one side of the water outlet cover near the valve cover is provided with a water outlet groove, the water outlet groove is delayed from the water outlet hole to the outer side wall of the water outlet cover, the water sealing head slides in the delay bucket, the water sealing head is fixed at one end, far away from the pressing part, of the pressure rod, the side face of one end, near the pressure rod, of the water sealing head is provided with a water sealing ring abutted on the water outlet hole. The invention has the effect of delayed closing of the flushing valve.)

1. The utility model provides a push type flashing valve, includes valve body (1) and valve gap (2) be connected with valve body (1), be equipped with baffle (13) with valve body (1) internal partitioning for going into water chamber (11) and play water chamber (12) in valve body (1), be equipped with mounting hole (131) on baffle (13), be equipped with on valve gap (2) and press the delayer, press the delayer including pressing splenium (3) and time delay portion (5), press splenium (3) and time delay portion (5) between be connected through depression bar (4) that run through valve gap (2), press splenium (3) to include the pressure cap (31) of being connected with depression bar (4) one end to and both ends are contradicted respectively and are pressing reset spring (32) between cap (31) and valve gap (2), characterized by: one end of the delay part (5) is located in the water outlet cavity (12), the other end of the delay part (5) is located in the water inlet cavity (11) through the mounting hole (131), the delay part (5) comprises a delay barrel (51), a water outlet cover (52) and a water sealing head (53), the delay barrel (51) extends into the mounting hole (131) and the opening edge of the delay barrel (51) is abutted on the partition plate (13), the side wall of the delay barrel (51) located in the water inlet cavity (11) is provided with a water inlet hole (511) close to one end of the opening of the delay barrel (51), one side of the water outlet cover (52) is abutted on the opening of the delay barrel (51), the other side of the water outlet cover (52) is abutted on the valve cover (2), the center of the water outlet cover (52) is provided with a water outlet hole (521) for inserting the pressure rod (4), one side of the water outlet cover (52) close to the valve cover (2) is provided with a water outlet groove (522), and the water outlet groove (522) is, sealing head (53) slide in time delay bucket (51), sealing head (53) are fixed and are kept away from pressing portion (3) one end in depression bar (4), sealing head (53) are close to depression bar (4) one end side and are equipped with water sealing ring (54) of contradicting with apopore (521), sealing head (53) are kept away from depression bar (4) one end side and are equipped with time delay sealing ring (55) of contradicting with time delay bucket (51) inner wall, sealing head (53) are kept away from depression bar (4) one end and are equipped with backward flow hole (56), backward flow hole (56) communicate to sealing head (53) lateral surface between water sealing ring (54) and time delay sealing ring (55).

2. The push type flush valve as recited in claim 1, further comprising: and a radial flow guide through hole (561) is formed in the outer side surface of the water sealing head (53) between the water sealing ring (54) and the delay sealing ring (55), and the backflow hole (56) is communicated with the flow guide through hole (561).

3. The push type flush valve as recited in claim 2, further comprising: the water sealing head (53) is far away from one end of the pressure rod (4) and is provided with a dredging spring (6), and one end of the dredging spring (6) far away from the water sealing head (53) is provided with a dredging rod (61) extending into the backflow hole (56).

4. A push type flush valve as claimed in claim 1, 2 or 3, wherein: the water sealing head (53) is far away from one end side of the pressure lever (4) and is provided with a water retaining convex rib (531), the delay sealing ring (55) is positioned at one end, close to the pressure lever (4), of the water retaining convex rib (531), and a water pressing notch (532) is arranged on the side wall, close to the delay barrel (51), of the water retaining convex rib (531).

5. The push type flush valve as recited in claim 4, further comprising: the cross section of the delay sealing ring (55) is L-shaped, and the opening of the cross section of the delay sealing ring (55) faces the pressure rod (4).

6. The push type flush valve as recited in claim 5, further comprising: the water sealing head (53) is sleeved with a fixed sleeve (57), one end of the fixed sleeve (57) supports the delay sealing ring (55) on the water retaining convex rib (531), the water sealing ring (54) is clamped at the other end of the fixed sleeve (57), and the fixed sleeve (57) is provided with a via hole (571) communicated with the flow guide through hole (561).

7. The push type flush valve of claim 6, wherein: a flow guiding gap (572) is formed between the fixed sleeve (57) and the water sealing head (53).

8. The push type flush valve as recited in claim 1, further comprising: the water outlet grooves (522) are arrayed in a circumferential manner, and the outer edge of one side, close to the valve cover (2), of the water outlet cover (52) is provided with a plurality of supporting lugs (526) and flow guide inclined planes (527) at intervals.

9. The push-to-type flush valve of claim 8, further comprising: the inner edge of the water outlet cover (52) close to one side of the valve cover (2) is provided with a plurality of bulges (528) extending between the valve cover (2) and the pressure rod (4).

10. The push type flush valve as recited in claim 1, further comprising: go out water cover (52) and be equipped with an extension section of thick bamboo (523) on keeping away from valve gap (2) one side, be equipped with first income water breach (524) that are greater than into water hole (511) and second income water breach (525) that are less than into water hole (511) on an extension section of thick bamboo (523) respectively, an extension section of thick bamboo (523) outer wall still is equipped with location lug (529), time delay bucket (51) inner wall is equipped with two and supplies location lug (529) male location slot (512).

Technical Field

The invention relates to the technical field of water control valves, in particular to a push type flushing valve.

Background

At present, in the use process of public toilets and bathrooms, an electromagnetic induction valve or a press valve is used for switching on and off water discharge flushing, for example, a press type flushing valve disclosed by an authorization bulletin No. CN201326817Y, and comprises a valve body, a valve seat, a support, an adhesive film, a spring and an O-shaped sealing ring, wherein the adhesive film divides an inner cavity of a shell into a water inlet area, a water outlet area and a balance area, a plunger in sliding fit penetrates through a water outlet hole of the support, two ends of the plunger are respectively positioned in the balance area and the water outlet area, at least one end of the plunger is used as a press end to extend out of the shell, the spring is arranged between the plunger and the shell, the surface of the plunger starts to form; when the urinal is used, the pressing end is only needed to be stepped down by feet, the flushing valve is opened to flush the urinal, and the adhesive film can move to be reset to a closed state; this application discloses another kind has the push type flashing valve of time delay closing function in combination with the prior art condition.

Disclosure of Invention

In view of the shortcomings of the prior art, it is an object of the present invention to provide a push type flush valve with a time delay closing function.

The above object of the present invention is achieved by the following technical solutions: a push type flushing valve comprises a valve body and a valve cover connected with the valve body, wherein a partition plate which divides the interior of the valve body into a water inlet cavity and a water outlet cavity is arranged in the valve body, a mounting hole is formed in the partition plate, a push type delayer is arranged on the valve cover and comprises a push portion and a delay portion, the push portion is connected with the delay portion through a press rod penetrating through the valve cover, the push portion comprises a press cap connected with one end of the press rod and a reset spring with two ends respectively abutting against the press cap and the valve cover, one end of the delay portion is located in the water outlet cavity, the other end of the delay portion is located in the water inlet cavity through the mounting hole, the delay portion comprises a delay barrel, a water outlet cover and a water sealing head, the delay barrel extends into the mounting hole and the edge of an opening of the delay barrel abuts against the partition plate, one end, close to the opening, of the side wall of the delay barrel, it contradicts at time delay bucket opening part to go out water cover one side, it contradicts on the valve gap to go out water cover opposite side, it is equipped with and supplies depression bar male apopore to go out the water cover center, it is equipped with out the basin to go out water cover one side near the valve gap to go out the basin, it delays to a water cover lateral wall from the apopore to go out the basin, the flood peak slides in the time delay bucket, it fixes and keeps away from according to splenium one end at the depression bar to seal the flood peak, it is equipped with the water sealing washer of contradicting with the apopore to seal near depression bar one end side to seal the flood peak, it keeps away from depression bar one end side and is equipped with the backward flow hole to seal the flood peak lateral surface between water sealing washer and the.

By adopting the technical scheme, the pressure cap is pressed when in use, so that the reset spring is extruded, the pressure rod moves towards the valve body, the water sealing head moves towards the bottom of the delay barrel, in the process of extrusion movement, the fluid at the bottom of the delay barrel flows out through the gap between the delay sealing ring and the outer wall of the delay barrel and the backflow hole, and the water sealing ring is separated from the water outlet hole when the water sealing head moves, so that the liquid in the water inlet cavity can sequentially pass through the water inlet hole, the position of the delay barrel close to the opening, the water outlet hole and the water outlet groove and then reach the water outlet cavity so as to open the water passage to supply water to the bathroom, at the moment, the water sealing head moves back under the reset action of the reset spring, the liquid in the opening position of the delay barrel flows back to the bottom position of the delay barrel through the backflow hole, because the water flow supplementing quantity is limited by the backflow hole, the back moving speed of the water sealing head is slowed down, and the effect of closing the water outlet hole by delaying the water sealing head is achieved.

The present invention in a preferred example may be further configured to: and a radial flow guide through hole is formed in the outer side surface of the water sealing head between the water sealing ring and the delay sealing ring, and the backflow hole is communicated with the flow guide through hole.

By adopting the technical scheme, the diversion through holes are arranged to reduce the interference of the water sealing head on the liquid flow in the delay barrel.

The present invention in a preferred example may be further configured to: the water sealing head is far away from depression bar one end and is equipped with the mediation spring, it is equipped with the mediation guide arm that stretches into the backward flow hole to dredge the spring and keep away from water sealing head one end.

Through adopting above-mentioned technical scheme, the in-process that the head of sealing water removed makes to dredge the spring and produce the compression to make to dredge the guide arm and remove in the backward flow hole, effectual pushing out the debris of adhesion in the backward flow hole at the in-process that dredges the guide arm and remove, thereby avoid the downthehole jam of backward flow.

The present invention in a preferred example may be further configured to: the side face of one end, far away from the pressing rod, of the water sealing head is provided with a water retaining convex rib, the delay sealing ring is located at one end, close to the pressing rod, of the water retaining convex rib, and the water retaining convex rib is provided with a water pressing notch close to the side wall of the delay barrel.

Through adopting above-mentioned technical scheme, the liquid that is close to the bottom at extrusion in-process time delay bucket can pass through the pressurized-water breach, makes the time delay sealing washer produce a small scale and warp again and carry out a large amount of discharges, and at the in-process of time delay backward flow, the time delay sealing washer receives the supporting role of the protruding muscle of manger plate, keeps good closure, makes the backward flow liquid mostly flow back through the backward flow hole.

The present invention in a preferred example may be further configured to: the cross section of the delay sealing ring is L-shaped, and the opening of the cross section of the delay sealing ring faces the pressure rod.

Through adopting above-mentioned technical scheme, the time delay sealing washer opening is opened and is contradicted at time delay bucket inner wall, when the liquid that keeps away from the open position flows to the open position, inwards extrudees time delay sealing washer side to make liquid can pass through between time delay sealing washer and the time delay bucket, when liquid needs reverse flow, liquid effect and open position make time delay sealing washer opening open big more, thereby the sealed effect of time delay sealing washer and time delay bucket inner wall is better, thereby make liquid flow back through the backward flow hole.

The present invention in a preferred example may be further configured to: the water sealing head is sleeved with a fixing sleeve, one end of the fixing sleeve supports the delay sealing ring on the water retaining convex rib, the water sealing ring is clamped at the other end of the fixing sleeve, and the fixing sleeve is provided with a through hole communicated with the flow guide through hole.

Through adopting above-mentioned technical scheme, fixed cover is fixed on sealing the tap through the conflict effect of sealing the water sealing washer, fixes the time delay sealing washer simultaneously, makes the installation of time delay sealing washer and dismantles convenience very.

The present invention in a preferred example may be further configured to: and a flow guide gap is formed between the fixed sleeve and the water sealing head.

By adopting the technical scheme, when liquid needs to enter the backflow hole, the liquid needs to sequentially pass through the conducting hole, the flow guide gap and the flow guide through hole, wherein large-particle impurities can be effectively blocked by the flow guide gap, and the anti-blocking effect is achieved.

The present invention in a preferred example may be further configured to: the water outlet grooves are arrayed in a circumferential manner, and the outer edge of one side, close to the valve cover, of the water outlet cover is provided with a plurality of supporting lugs and flow guide inclined planes at intervals.

Through adopting above-mentioned technical scheme, a plurality of play basin make liquid flow more stable, and the water conservancy diversion inclined plane has also played good water conservancy diversion effect, promotes the stability that whole liquid flows.

The present invention in a preferred example may be further configured to: the inner edge of the water outlet cover close to one side of the valve cover is provided with a plurality of bulges extending between the valve cover and the pressure rod.

Through adopting above-mentioned technical scheme, a plurality of arch also provides the water conservancy diversion effect to liquid flow, promotes the stability that liquid flows.

The present invention in a preferred example may be further configured to: the water outlet cover is provided with an extension barrel on one side far away from the valve cover, the extension barrel is provided with a first water inlet notch larger than a water inlet hole and a second water inlet notch smaller than the water inlet hole, the outer wall of the extension barrel is further provided with a positioning lug, and the inner wall of the delay barrel is provided with two positioning slots for inserting the positioning lug.

Through adopting above-mentioned technical scheme, through first water breach and income water hole relative transform to the second and go into the water breach relative with the income water hole, reach the effect of adjustment liquid flow.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the valve body is closed in a delayed way by pressing the delayer, so that the effect of automatically closing and saving water during water supply is achieved;

2. the press delayer is internally provided with a good anti-blocking structure, so that the service life is prolonged, and the maintenance frequency is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is an internal cross-sectional view of the present invention.

Fig. 3 is an enlarged view of a in fig. 2.

Fig. 4 is a diagram showing a pressed state of the press delayer.

Fig. 5 is an enlarged view of B in fig. 4.

Fig. 6 is a perspective view of the water outlet cover.

Fig. 7 is a perspective view of the delay barrel.

Fig. 8 is a perspective view of the harness.

Reference numerals: 1. a valve body; 11. a water inlet cavity; 12. a water outlet cavity; 13. a partition plate; 131. mounting holes; 2. a valve cover; 3. a pressing part; 31. pressing the cap; 32. a return spring; 4. a pressure lever; 5. a delay section; 51. a delay barrel; 511. a water inlet hole; 512. positioning the slot; 52. a water outlet cover; 521. a water outlet hole; 522. a water outlet groove; 523. an extension cylinder; 524. a first water inlet notch; 525. a second water inlet gap; 526. supporting the projection; 527. a diversion bevel; 528. a protrusion; 529. positioning the bump; 53. a water sealing head; 531. water retaining ribs; 532. a water pressing notch; 54. sealing a water seal ring; 55. a time-delay sealing ring; 56. a return orifice; 561. a flow guide through hole; 57. fixing a sleeve; 571. a via hole; 572. a flow guide gap; 6. a dredging spring; 61. and (4) thinning the guide rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A push type flushing valve is disclosed, as shown in figures 4 and 5, and comprises a valve body 1 and a valve cover 2 connected with the valve body 1, a partition plate 13 is arranged in the valve body 1 and divides the interior of the valve body 1 into a water inlet cavity 11 and a water outlet cavity 12, a mounting hole 131 is arranged on the partition plate 13, a push time delayer is arranged on the valve cover 2 and comprises a push part 3 and a time delay part 5, the push part 3 is connected with the time delay part 5 through a pressure rod 4 penetrating through the valve cover 2, the push part 3 comprises a pressure cap 31 connected with one end of the pressure rod 4 and a return spring 32 with two ends respectively abutting between the pressure cap 31 and the valve cover 2, one end of the time delay part 5 is positioned in the water outlet cavity 12, the other end of the time delay part 5 is positioned in the water inlet cavity 11 through the mounting hole 131, two ends of the valve body 1 are respectively connected with an external water inlet pipe and a water outlet pipe, the other end of the water outlet pipe is communicated with a water receiving opening of a bathroom product, so that the reset spring 32 is compressed by pressing the pressing cap 31, the pressing rod 4 moves towards the valve body 1, a water passage in the pressing delayer is opened, as shown in figure 1, an external water source can reach the bathroom product through the valve body 1, the flushing effect is realized, the pressing delayer is delayed to be closed in the valve body 1, the water passing effect is delayed to be blocked, the bathroom product can be automatically closed after flushing for a certain time, and waste of water resources is reduced.

As shown in fig. 2 and 3, the delay part 5 includes a delay barrel 51, a water outlet cover 52, and a water sealing head 53, the delay barrel 51 extends into the mounting hole 131, and the opening edge of the delay barrel 51 abuts against the partition 13, so as to achieve the mounting and fixing of the delay barrel 51, wherein the side wall of the water inlet chamber 11 of the delay barrel 51 near the opening end of the delay barrel 51 is provided with a water inlet 511, so that the liquid in the water inlet chamber 11 is discharged into the delay barrel 51 through the water inlet 511, one end of the water outlet cover 52 abuts against the opening end of the delay barrel 51 for sealing the delay barrel 51, and the other end of the water outlet cover 52 abuts against the valve cover 2, so as to achieve the fixing in the valve body 1, the center of the water outlet cover 52 is provided with a water outlet 521 for inserting the pressure rod 4, as shown in fig. 6, one side of the water outlet cover 52 near the valve cover 2 is provided with a water outlet groove 522, the water outlet groove 522 is delayed from the, and the outer edge of the water outlet cover 52 between the adjacent water outlet grooves 522 is respectively provided with a plurality of supporting bumps 526 and a plurality of flow guiding inclined planes 527 at intervals, in the process of liquid flowing, the liquid entering the water cavity 11 is retained in the delay barrel 51 through the water inlet hole 511, and then flows into the water outlet cavity 12 through the water outlet hole 521 and the water outlet grooves 522 in sequence, wherein the liquid flowing is more stable due to the plurality of water outlet grooves 522, the flow guiding inclined planes 527 also have a good flow guiding effect, so that the overall liquid flowing stability is improved, the inner edge of the water outlet cover 52 between the adjacent water outlet grooves 522 is provided with a plurality of protrusions 528 extending between the valve cover 2 and the pressure rod 4, the plurality of protrusions 528 also provide a flow guiding effect on the liquid flowing, and the liquid flowing stability is improved.

As shown in fig. 6, an extension cylinder 523 is disposed on a side of the water outlet cover 52 away from the valve cover 2, the extension cylinder 523 is respectively provided with a first water inlet gap 524 larger than the water inlet hole 511 and a second water inlet gap 525 smaller than the water inlet hole 511, a positioning protrusion 529 is further disposed on an outer wall of the extension cylinder 523, as shown in fig. 7, the inner wall of the delay barrel 51 is provided with two positioning slots 512 into which the positioning protrusions 529 are inserted, as shown in fig. 5, when the extension cylinder 523 is inserted, when the first water inlet gap 524 is opposed to the water inlet hole 511, the water flow rate is affected by the diameter of the water inlet hole 511, when the second water inlet gap 525 is opposite to the water inlet hole 511, the water flow is affected by the aperture of the second water inlet gap 525, therefore, the liquid flow is adjusted, the positioning bumps 529 are matched with the positioning slots 512, the positioning accuracy of the water inlet holes 511 is improved, the water outlet cover 52 is more convenient and accurate to mount, and the fixing effect is improved.

As shown in fig. 2 and 3, the water sealing head 53 is fixed at one end of the pressing rod 4 far from the pressing part 3, a water sealing ring 54 abutting against the water outlet hole 521 is arranged on the side surface of one end of the water sealing head 53 close to the pressing rod 4, when the water sealing ring 54 abuts against the water outlet hole 521, the water outlet hole 521 can be completely sealed by the water sealing head 53, so that water in the delay barrel 51 cannot pass through the water outlet hole 521, thereby realizing closed water supply in the valve body 1, as shown in fig. 4 and 5, when the pressing rod 4 is pressed down, the water sealing head 53 slides in the delay barrel 51, the water sealing ring 54 is separated from the water outlet hole 521, thereby enabling liquid to flow into the water outlet hole 521 from the delay barrel 51, and realizing the on-off of.

As shown in fig. 4 and 5, a water blocking convex rib 531 is arranged on the side surface of the end of the water sealing head 53 far away from the pressure lever 4, a delay sealing ring 55 is arranged on the end of the water blocking convex rib 531 near the pressure lever 4, the cross section of the delay sealing ring 55 is L-shaped, the opening of the cross section of the delay sealing ring 55 faces the pressure lever 4, the opening of the delay sealing ring 55 is opened to abut against the inner wall of the delay barrel 51 to realize water sealing, a water pressing gap 532 is arranged on the side wall of the water blocking convex rib 531 near the delay barrel 51, a backflow hole 56 is arranged on the end of the water sealing head 53 far away from the pressure lever 4, a radial flow guide through hole 561 is arranged on the outer side surface of the water sealing head 53 between the water sealing ring 54 and the delay sealing ring 55, the backflow hole 56 is communicated with the flow guide through hole 561, when the pressure cap 31 is pressed to press the reset spring 32 to move the pressure lever 4 towards the valve body 1, so that the, the liquid of time delay bucket 51 near the bottom can pass through pressurized-water breach 532, on quick action and the time delay sealing washer 55, thereby inwards extrude time delay sealing washer 55 side, thereby make liquid can flow through between time delay sealing washer 55 and the time delay bucket 51 and backward flow hole 56, reach the effect to the quick drainage of time delay bucket 51 bottom, water sealing head 53 removes and makes water sealing washer 54 and apopore 521 separate this moment, thereby reach and open the water channel and lead to the water to the bathroom.

After the pressing is finished, the water sealing head 53 moves back due to the reset function of the reset spring 32, when liquid needs to flow reversely, the delay sealing ring 55 is supported by the water retaining convex rib 531, good sealing performance is kept, and deformation of the delay sealing ring 55 is reduced, so that the opening of the delay sealing ring 55 is opened to be larger when the liquid acts on the opening position, the sealing effect of the delay sealing ring 55 and the inner wall of the delay barrel 51 is better, the liquid can only flow back through the diversion through hole 561 and the backflow hole 56 in sequence, the water flow supplementing amount is limited by the backflow hole 56, the moving back speed of the water sealing head 53 is reduced, the effect of closing the water outlet 521 by the water sealing head 53 in a delayed mode is achieved, and the diversion through hole 561 is arranged to reduce interference of the water sealing head 53 on liquid flow in the delay barrel 51.

As shown in fig. 4 and 5, the dredging spring 6 is arranged at one end of the water sealing head 53 far away from the pressure rod 4, the dredging rod 61 extending into the backflow hole 56 is arranged at one end of the dredging spring 6 far away from the water sealing head 53, the dredging spring 6 is compressed in the moving process of the water sealing head 53, so that the dredging rod 61 moves in the backflow hole 56, impurities adhered in the backflow hole 56 are effectively pushed out in the moving process of the dredging rod 61, and the blockage in the backflow hole 56 is avoided.

As shown in fig. 5 and 8, the water sealing head 53 is sleeved with a fixing sleeve 57, one end of the fixing sleeve 57 presses the delay sealing ring 55 against the water retaining rib 531, the water sealing ring 54 is clamped at the other end of the fixing sleeve 57, the fixing sleeve 57 is provided with a through hole 571 communicated with the flow guiding through hole 561, the fixing sleeve 57 is fixed on the water sealing head 53 through the pressing action of the water sealing ring 54, meanwhile, the time-delay sealing ring 55 is fixed, so that the time-delay sealing ring 55 is very convenient to mount and dismount, and a flow guiding gap 572 is formed between the fixing sleeve 57 and the water sealing head 53, when the liquid needs to enter the return hole 56, it is required to pass through the via hole 571, the flow guiding gap 572 and the flow guiding through hole 561 in sequence, the flow guiding gap 572 can effectively block large particles of impurities, so as to prevent blockage, and the fixing sleeve 57 is fixed without aligning the via hole 571 with the flow guiding through hole 561, so that the via hole 571 can be communicated with the flow guiding through hole 561 after installation.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.