CN111006053A

CN111006053A - Delay valve

Info

Publication number: CN111006053A
Application number: CN201911401026.6A
Authority: CN
Inventors: 刘清昌; 王华林; 秦家旺
Original assignee: Zhejiang Gaoao Sanitary Ware Co Ltd
Current assignee: Zhejiang Gaoao Sanitary Ware Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-14
Anticipated expiration: 2039-12-30
Also published as: CN111006053B

Abstract

The invention relates to the technical field of valves, in particular to a time delay valve which comprises a valve body, wherein a valve core cover and a valve rod are arranged in the valve body, an ejector rod is arranged in the valve rod, the valve rod partially extends into the valve core cover, a water outlet hole is formed in the valve core cover, the part of the ejector rod extending out of the valve rod is an end part, a flow guide groove is formed in the end part, a sheath is connected to the valve rod, a water inlet hole is formed in the sheath, a movable sleeve is arranged in the sheath, a soft elastic ring is embedded in the movable sleeve, the movable sleeve and the soft elastic ring are sleeved on the end part, a spring is sleeved on the end part, one end of the spring is in abutting connection with the ejector rod, the other end of the spring is in abutting connection with the movable sleeve, and a bulge is arranged in the valve core cover.

Description

Time-delay valve

Technical Field

The invention relates to the technical field of valves, in particular to a time delay valve.

Background

The time-delay flushing valve is usually used in public places such as stations and public toilets, and is generally installed in public places to facilitate people to flush public facilities, so that the time-delay flushing valve is convenient and easy to use, and water resources cannot be wasted.

The working principle of the existing time-delay flushing valve is as follows: when not using (closed state), cold water or hot water entering valve body on the valve rod, first inner chamber and second inner chamber are full of cold water or hot water, this moment, sealing washer on the valve rod contradicts sealedly with sealed frame, play the effect of closing the valve, during the use (open mode), press the button, the water of second inner chamber is extruded, and sealing washer on the valve rod breaks away from sealed frame, cold water or hot water flow out, the cold water or the hot water of first inner chamber pass through the inlet opening this moment, the water conservancy diversion groove flows into the second inner chamber, water along with the second inner chamber constantly increases, water pressure constantly increases, it rises to promote the valve rod, it is sealed with sealed frame conflict to reach sealing washer on the valve rod, at this moment, be in closed state again, play the effect of time delay closing.

The diversion trench is small, cold water or hot water in the first inner cavity is dripped into the second inner cavity through the water inlet hole and the diversion trench, so as to achieve the best time delay effect (generally 3-5 seconds for saving water resource), however, impurities and scale easily block the diversion trench, which results in a long delay time (10 seconds, 20 seconds, 30 seconds … …), and more seriously, if the diversion trench is completely blocked, the second inner cavity water pressure cannot push the valve rod to the initial position, so that the sealing ring on the valve rod cannot interfere with the sealing frame for sealing, so that the water flow of the delay valve is not continuous, and further cannot be closed, namely the time delay valve which is often seen in public places cannot be automatically closed, water flow is not only stopped, namely the diversion trench is completely blocked, therefore, in order to solve the above problems, the present invention provides a delay valve for preventing the blockage of the diversion trench.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a time delay valve for preventing blockage.

In order to achieve the purpose, the invention provides the following technical scheme: time delay valve, including the valve body, be equipped with valve core cover and valve rod in the valve body, be equipped with the ejector pin in the valve rod, valve rod part stretches into in the valve core cover, and the valve core covers and is equipped with the apopore, and the part that the ejector pin stretches out outside the valve rod is the tip, and the tip is equipped with the guiding gutter, the valve rod on be connected with the sheath, be equipped with the inlet opening on the sheath, be provided with the movable sleeve in the sheath, the movable sleeve has inlayed soft elastic ring, and movable sleeve and soft elastic ring all overlap and establish on the tip, the tip still overlaps and is equipped with the spring, and the one end and the ejector pin of spring are contradicted and are connected, and the other end is contradicted with the movable sleeve and is connected, the valve core.

Further, the original inner diameter of the soft elastic ring is smaller than the outer diameter of the end part.

Furthermore, the drainage groove is a straight groove with a small upper opening and a large lower opening, and the ratio of the distance L1 between the uppermost opening and the soft elastic ring to the distance L2 between the lowermost opening and the soft elastic ring is 1/10-20/1 in the closed state of the delay valve.

Furthermore, the distance a between the uppermost port and the lowermost port of the drainage groove is higher than the height b of the movable sleeve, and meanwhile, when the valve rod is pressed to the bottommost part, the maximum distance c for forcing the movable sleeve and the soft elastic ring to move upwards relative to the ejector rod is larger than the distance d from the soft elastic ring to the upper end face of the movable sleeve.

Furthermore, an O-shaped ring is embedded in the outer wall of the movable sleeve.

Further, the sheath still be equipped with the rubber circle outward, the rubber circle is inconsistent with the case cover.

Furthermore, the section of the rubber ring is in a Y shape.

Furthermore, the movable sleeve is positioned in the sheath through an annular retainer ring, and the inner diameter of the annular retainer ring is larger than the outer diameter of the protrusion.

Compared with the defects of the prior art, the technical scheme provided by the invention has the following beneficial effects: the utility model discloses a water conservancy diversion groove, including the guiding gutter, the guiding gutter is equipped with the soft elastic ring, the water conservancy diversion groove is equipped with the water conservancy diversion groove, the water conservancy diversion groove is equipped with the soft elastic ring, the soft elastic ring is equipped with the water conservancy diversion groove, the water conservancy diversion groove is equipped with the water conservancy diversion groove, the water.

The soft elastic ring is made of soft materials, and the part wrapped on the diversion trench is slightly sunken in the diversion trench, so that the diversion trench can be scraped and washed to a greater extent when the soft elastic ring is scraped and washed up and down.

When the valve rod is pressed to the bottommost part, the maximum distance c of the movable sleeve and the soft elastic ring moving upwards relative to the ejector rod is forced to be larger than the distance d from the soft elastic ring to the upper end face of the movable sleeve, so that more specifically, water scales are blocked on the diversion trench, the smaller the diversion trench at the upper part is, the more serious the blocking condition is, and through the design, the distance c for scraping and washing the soft elastic ring is slightly larger than or equal to d, and the diversion trench is scraped and washed more comprehensively.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of fig. 1 in the direction a-a 1.

Fig. 3 is a schematic cross-sectional view of fig. 1 in the direction B-B1.

Fig. 4 is an enlarged schematic view of the portion G of fig. 3.

Fig. 5 is an enlarged schematic view of a portion H of fig. 2.

Fig. 6 is a schematic structural view of the soft elastic ring and the end part in the direction of C-C1 in fig. 5.

Fig. 7 is a schematic structural view of the cartridge cover.

Fig. 8 is a schematic structural view of the seal holder.

Fig. 9 is a schematic view of a conventional sheath and tip.

Detailed Description

The present invention is further described with reference to fig. 1-9.

In order to achieve the purpose, the invention provides the following technical scheme: as shown in fig. 1, 2, 3, 7 and 8: the time delay valve comprises a valve body 1, a valve core cover 11 and a sealing frame 12 are fixed in the valve body 1, a valve rod 13 is arranged in the valve body 1, the valve rod 13 can be pressed down under the artificial action and can also be restored under the assistance of water pressure, an ejector rod 14 is arranged in the valve rod 13, part of the valve rod 13 extends into the valve core cover 11, the valve body 1 and the valve core cover 11 form a first inner cavity 01, a second inner cavity 02 is arranged in the valve core cover 11, a water outlet hole 111 is arranged on the valve core cover 11, the part of the ejector rod 14 extending out of the valve rod 13 is an end part 141, a diversion trench 1411 is arranged at the end part 141, a sheath 15 is connected on the valve rod 13, a water inlet hole 151 is arranged on the sheath 15, a movable sleeve 16 is arranged in the sheath 15, a soft elastic ring 17 is embedded in the movable sleeve 16, the movable sleeve 16 and the soft elastic ring 17 are both sleeved on the end part 141, a spring 18 is further, the valve core cover 11 is internally provided with a bulge 19, when the valve rod 13 is pressed down, the bulge 19 props against the movable sleeve 16, and the movable sleeve 16 and the soft elastic ring 17 are forced to move upwards relative to the ejector rod 14.

The delayed working principle is as follows: as shown in fig. 1 to 3: when the valve is not used (closed state), cold water or hot water on the valve rod 13 enters the valve body 1, the first inner cavity 01 and the second inner cavity 02 are filled with the cold water or the hot water, at the moment, the sealing ring on the valve rod 13 is abutted and sealed with the sealing frame 12 to play a role of closing the valve, when the valve is used (in an opening state), the button is pressed by external pressure, the valve rod 13 drives the movable sleeve 16 to move downwards, the water in the second inner cavity 02 is extruded out from the sealing ring, and the sealing washer on the valve rod 13 breaks away from sealed frame 12, and cold water or hot water flow out from the exit, and the cold water or the hot water of first inner chamber 01 flowed through inlet opening 151, guiding gutter 1411 this moment and instils into second inner chamber 02, and along with the continuous increase of water of second inner chamber 02, water pressure constantly increases, promotes valve rod 13 and rises to reply, and sealing washer 001 on the valve rod 13 is contradicted with sealed frame 12 and is sealed, at this moment, is in closed state again, plays the effect of delay closing.

As shown in fig. 1 to 6: when the button is pressed to the bottommost part by external pressure, the valve rod 13 drives the sheath 15 to move downwards, at the moment, the protrusion 19 jacks up the movable sleeve 16, the movable sleeve 16 and the soft elastic ring 17 move upwards relative to the end part 141, particularly the soft elastic ring 17 is tightly wrapped on the end part 141, when the movable sleeve moves upwards, water scale in the guide groove 1411 is scraped off, and the water scale is flushed along water flow;

when the artificial external pressure disappears, the first inner cavity 01 flows into the second inner cavity 02 through the water inlet hole 151 and the flow guide groove 1411, the protective sleeve 15 is pushed to move upwards to the initial position along with the continuous rising of the water pressure of the second inner cavity 02, meanwhile, the movable sleeve 16 and the soft elastic ring 17 return to the initial position under the action of the spring 18 until the sealing ring on the valve rod 13 is abutted against and sealed with the sealing frame 12, in the process, the spring 18 drives the movable sleeve 16 and the soft elastic ring 17, particularly the soft elastic ring 17, to move downwards relative to the end portion 141, when moving downwards, the scale in the flow guide groove 1411 is scraped off, and the scale can be washed off along the water flow;

therefore, when the button is manually pressed, the delay valve discharges water, and when the delay valve is automatically closed, the soft elastic ring 17 scrapes and washes the water scale in the diversion trench 1411 for the upper and lower times to prevent the diversion trench 1411 from being blocked, more importantly, the upper and lower scraping and washing are carried out when the delay valve discharges water, and the scraped water scale is flushed out along with water flow.

The original inner diameter of the soft elastic ring 17 is slightly smaller than the outer diameter of the end portion 141, so that the soft elastic ring 17 can be tightly sleeved on the end portion 141, and because the soft elastic ring 17 is made of soft material, as shown in fig. 6, the part wrapped on the flow guide groove 1411 is slightly recessed into the flow guide groove 1411, so that the flow guide groove 1411 can be scraped and washed to a greater extent when the soft elastic ring 17 is scraped and washed up and down, and the soft elastic ring 17 can be an O-ring or other soft plastic rings.

The original inner diameter referred to above means: the inner diameter of the soft elastic band 17 in the state of not being elastically deformed.

The diversion trench 1411 is a straight trench with a small upper opening and a large lower opening, the size of the diversion trench 1411 depends on the optimal effect of time delay (namely the optimal time delay), and can be adjusted properly, and in the closed state of the time delay valve, the ratio between the distance L1 between the uppermost opening and the soft elastic ring 17 and the distance L2 between the lowermost opening and the soft elastic ring 17 is 1/10-20/1, generally, the lower opening of the diversion trench 1411 is slightly larger and not easy to block, and the upper opening is small and is a place easy to block, and the same no matter whether the soft elastic ring 17 is scraped upwards or downwards, the scraped part is the position between the uppermost opening and the soft elastic ring 17 in the diversion trench 1411, so as to further prevent the diversion trench 1411 from being blocked.

As shown in fig. 4 and 5: the distance a (a is L1+ L2) between the uppermost port and the lowermost port of the diversion trench 1411 is higher than the height b of the movable sleeve 16, by the above design, in the initial state, the hot water or the cold water in the first cavity can also enter the second cavity through the upper part of the diversion trench 1411, when the valve rod 13 is pressed to the bottommost part, the maximum distance c that the movable sleeve 16 and the soft elastic ring 17 are forced to move upwards relative to the ejector rod 14 is larger than the distance d that the soft elastic ring 17 is to the upper end surface of the movable sleeve 16, more specifically, the traditional time delay valve, because the end part 141 and the sheath 15 are relatively fixed, impurities are mostly blocked at the circumference of the z section and the z section (as shown in fig. 9, z is a thick black line), which is a place where scale is easily generated, especially the z section (located at the diversion trench), which is easily generated scale, finally leads to the blockage of the diversion trench, and similarly, if not used for a long time, impurities or water scales are blocked at the section of the circumference between the end part 141 and the movable sleeve 16 (namely, the section d of the circumference), through the design that c is larger than d, the scraping distance c of the soft elastic ring 17 is larger than d, the scraping guide groove 1411 is more comprehensive, and places where the water scales are easily generated are scraped and washed.

As shown in fig. 4 and 5: an O-shaped ring 002 is embedded in the outer wall of the movable sleeve 16, and the O-shaped ring 002 is used for sealing a gap between the protective sleeve 15 and the movable sleeve 16.

As shown in fig. 4 and 5: the rubber ring 003 is arranged outside the sheath 15, the rubber ring 003 is abutted against the valve core cover 11, and the purpose of the rubber ring 003 is to seal a gap between the valve core cover 11 and the sheath 15, as shown in fig. 4, the inner side of the rubber ring 003 is clamped on the sheath 15, the other side of the rubber ring 003 is extruded and abutted against the valve core cover 11, when the button is pressed by an artificial external force, the valve rod 13 drives the sheath 15 to move downwards, water in the second inner cavity 02 can be extruded from the extruded and abutted position, but conversely, because the cross section of the rubber ring 003 is in a 'Y' shape, the first inner cavity 01 cannot enter the second inner cavity 02 from the gap between the valve core cover 11 and the sheath 15.

As shown in fig. 4 and 5: the movable sleeve 16 is positioned in the sheath 15 through the annular retainer 152, the annular retainer 152 is integrally formed with the sheath 15, the inner diameter of the annular retainer 152 is larger than the outer diameter of the protrusion 19, and by the design, when the sheath 15 is pressed down, the protrusion 19 can relatively pass through the annular retainer 152 and abut against the movable sleeve 16.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art should be able to make general changes and substitutions within the technical scope of the present invention.

Claims

1. Time delay valve, including the valve body, be equipped with valve core cover and valve rod in the valve body, be equipped with the ejector pin in the valve rod, in the valve rod part stretched into the valve core cover, the valve core covered and is equipped with the apopore, the part that the ejector pin stretches out outside the valve rod is the tip, the tip is equipped with the guiding gutter, the valve rod on be connected with the sheath, be equipped with inlet opening, its characterized in that on the sheath: be provided with the movable sleeve in the sheath, the movable sleeve is inlayed and is inlayed soft elastic ring, and movable sleeve and soft elastic ring all overlap and establish on the tip, the tip still overlaps and is equipped with the spring, and the one end and the ejector pin of spring are contradicted and are connected, and the other end is contradicted with the movable sleeve and is connected, the case cover in be equipped with the arch, when the valve rod pushes down, the arch withstands the movable sleeve, forces movable sleeve and the relative ejector pin rebound of soft elastic ring.

2. The time delay valve of claim 1, wherein: the original inner diameter of the soft elastic ring is smaller than the outer diameter of the end part.

3. The time delay valve of claim 1 or 2, wherein: the drainage groove is a straight groove with a small upper opening and a large lower opening, and the ratio of the distance L1 between the uppermost opening and the soft elastic ring to the distance L2 between the lowermost opening and the soft elastic ring is 1/10-20/1 in the closed state of the delay valve.

4. The time delay valve of claim 1 or 2, wherein: the distance a between the uppermost opening and the lowermost opening of the drainage groove is higher than the height b of the movable sleeve, and meanwhile, when the valve rod is pressed to the bottommost part, the maximum distance c for forcing the movable sleeve and the soft elastic ring to move upwards relative to the ejector rod is larger than the distance d from the soft elastic ring to the upper end face of the movable sleeve.

5. The time delay valve of claim 1, wherein: the outer wall of the movable sleeve is embedded with an O-shaped ring.

6. The time delay valve of claim 1, wherein: the sheath is also provided with a rubber ring outside, and the rubber ring is abutted to the valve core cover.

7. The time delay valve of claim 6, wherein: the section of the rubber ring is Y-shaped.

8. The time delay valve of claim 1, wherein: the movable sleeve is positioned in the sheath through an annular retainer ring, and the inner diameter of the annular retainer ring is larger than the outer diameter of the protrusion.