WO2020237656A1

WO2020237656A1 - Water inlet valve for closestool water tank

Info

Publication number: WO2020237656A1
Application number: PCT/CN2019/089612
Authority: WO
Inventors: 张子鹏; 刘永茂
Original assignee: 厦门立业卫浴工业有限公司
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-12-03

Abstract

Disclosed by the present invention is a water inlet valve for a closestool water tank, comprising a valve seat, a pressure water stop valve, a buoyancy control mechanism and a water inlet pipe. The pressure water stop valve comprises an upper cover and a water stop cushion. The valve seat is arranged at a water outlet end of the water inlet pipe; a water outlet channel is formed at the bottom of the valve seat and reaches the outer side of the water outlet end of the water inlet pipe. The end surface of the water outlet end of the water inlet pipe is a water stop surface. The water stop cushion is arranged at the water outlet end of the water inlet pipe, and is sealed tightly with the valve body by the upper cover. A pressure cavity is formed between the upper cover and the water stop cushion, and is provided with a water inlet hole and a pressure relief hole. The water inlet hole is in communication with the water inlet pipe, and the buoyancy control mechanism is arranged outside the pressure relief hole. The present disclosure has the advantage that the water inlet pipe replaces an inner core pipe and performs the function of the inner core pipe. Compared with a side-feed water inlet valve, the present disclosure makes it simpler to manufacture the valve body; compared with a bottom-feed water inlet valve, the present disclosure reduces the installation of the inner core pipe in the valve seat and decreases unnecessary leakage points.

Description

Water inlet valve of toilet water tank

Technical field

The invention belongs to a toilet water tank inlet valve, and particularly relates to a pressure stop toilet water tank inlet valve.

Background technique

The prior art has a toilet tank inlet valve, which mainly uses the water pressure in the domestic water pipe network to achieve water inlet or block, including a valve body, a pressure stop valve, a buoyancy control mechanism, an inlet pipe, and the pressure stop valve is installed in On the valve body, the valve body is connected to the water inlet pipe, and the buoyancy control mechanism makes the water pressure or pressure relief inside the pressure water stop valve to realize the on and off of the water flow. The toilet tank inlet valve is divided into side inlet type inlet valve and bottom inlet type inlet valve according to different water inlet methods. According to the different structure of pressure stop valve, it is divided into back pressure inlet valve and needle valve. Inlet valve.

As shown in Figure 1 and Figure 2, the CN102345315U document discloses a side-inlet back pressure water inlet valve, which includes a valve body 100, a pressure stop valve 200, a buoyancy control mechanism 300, a water inlet pipe 400, and the water inlet pipe 400 is connected. On the side of the valve body 100, the pressure water stop valve 200 includes an upper cover 201, a rubber water stop gasket 202, and an inner core tube 203. A vertical water outlet channel 101 is formed on the valve body 100, and the inner core tube 203 is horizontally arranged on the valve body 100. The inner core tube 203 and the valve body 100 form a horizontal water inlet channel 102, the inner core tube water outlet 2031 communicates with the vertical water outlet channel 101, the inner core tube water inlet 2032 end surface forms a water stop surface, and a rubber water stop gasket 202 is arranged at the water inlet end 2032 of the inner core tube. The upper cover 201 seals the rubber water stop gasket 202 and the valve body 100 together. A pressure chamber is formed between the upper cover 201 and the rubber water stop gasket 202. The pressure chambers have water inlet holes respectively. And the pressure relief hole, the water inlet hole communicates with the lateral water inlet channel 102, and the buoyancy control mechanism 300 is provided outside the pressure relief hole. During installation, the water inlet pipe 400 is horizontally installed on the toilet tank (not shown in the figure), and the water inlet pipe 400 is connected to the domestic water pipe network. Usually the pressure stop valve 200 is higher than the toilet tank to have the highest water level to avoid siphoning. , Causing the water in the toilet tank to enter the domestic water pipe network through the water inlet pipe 400, the horizontal water inlet channel 102, the inner core pipe 203, and the vertical water outlet channel 101 in sequence. When in use, because the water in the toilet tank is discharged, the buoyancy control mechanism 300 loses its buoyancy, the pressure relief hole is opened, and the water enters the toilet tank from the water inlet pipe 400, the pressure stop valve 200, and the vertical water outlet channel 101. At the same time, A small part of water enters the pressure chamber through the water inlet hole, and then flows out through the pressure relief hole. At this time, the purpose of water intake is achieved; when the water level in the toilet tank rises to a predetermined position, the buoyancy control mechanism 300 is triggered to block the pressure relief. The hole prevents the pressure relief hole from draining outward, because the water inlet hole of the pressure chamber communicates with the water inlet pipe 400, which causes the water pressure in the pressure chamber to increase suddenly, causing the rubber waterstop 202 to elastically expand and deform, blocking the inner core The water stop surface of the water inlet end 2032 of the pipe cuts off the water flow between the transverse water inlet channel 102 and the inner core pipe 203 to achieve the purpose of water stop.

As shown in Figure 3, the CN202274155U document discloses a bottom-inlet back pressure water inlet valve, which includes a valve body 1', a pressure stop valve 2', a buoyancy control mechanism 3', a water inlet pipe 4', and a water inlet pipe 4' Connected to the lower part of the valve body 1', the pressure water stop valve 2'includes an upper cover 21', a rubber water stop cushion 22', and an inner core tube 23'. The end surface of the inner core tube water outlet 231' forms a water stop surface, and the inner core tube enters The water end 232' is inserted in the water inlet pipe to form a vertical water inlet channel 11', the inner core pipe 23' and the water inlet pipe 4'are sealed by a sealing ring, and the valve body 1'is sleeved on the water inlet pipe 4' , A vertical water outlet channel 12' is formed between the valve body 1'and the inner core pipe 23' and the water inlet pipe 4', the rubber water stop cushion 22' is arranged at the inner core pipe water outlet 231', the upper cover 21' and the valve body 1'are sealed together, and a pressure chamber 24' is formed between the upper cover 21' and the rubber water stop cushion 22'. The pressure chamber 24' has a water inlet 241' and a pressure relief hole 242', and the water inlet 241' and the vertical It communicates with the water inlet channel 11', and a buoyancy control mechanism 3'is provided outside the pressure relief hole 242'. During installation, the water inlet pipe 4'is vertically installed on the toilet tank (not shown in the figure), and the water inlet pipe is connected to the domestic water pipe network. Usually the pressure stop valve 2'is higher than the toilet tank to have the highest water level to avoid production The siphon causes the water in the toilet tank to enter the domestic water pipe network through the water inlet pipe 4', the vertical water inlet channel 11', the inner core pipe 23', and the vertical water outlet channel 12' in sequence. When in use, the principle is the same as that of the side-inlet toilet tank inlet valve. The water in the toilet tank is discharged, so that the buoyancy control mechanism 3'loses buoyancy, the pressure relief hole 242' is opened, and the water flows from the inlet pipe. 4'and the pressure stop valve 2'enter the toilet tank. At the same time, a small part of water enters the pressure chamber 24' through the water inlet 241', and then flows out through the pressure relief hole 242'. At this time, the purpose of water intake is achieved; When the water level in the toilet tank rises to a predetermined position, the buoyancy control mechanism 3'is triggered to block the pressure relief hole 242' and prevent the pressure relief hole 242' from draining outward, because the water inlet hole 241' of the pressure chamber and the water inlet pipe 4 'Communication, causing the water pressure in the pressure chamber to suddenly increase, causing the rubber water stop cushion to elastically expand and deform, blocking the water stop surface of the inner core tube outlet 231', cutting off the vertical water inlet channel 11' and the vertical water outlet The water flow between the channels 12' achieves the purpose of stopping water.

Looking at the above two types of toilet tank inlet valves, both need an inlet pipe and an inner core pipe. As shown in Figure 1 and Figure 2, the side inlet type inlet valve is installed on the side wall of the toilet tank, so there is no need to adjust the pressure stop. The distance between the water valve 200 and the side wall of the toilet tank, so the water inlet end of the water inlet pipe 400 is directly screwed to the side of the valve body 100, and the inner core pipe 203 is arranged inside the valve body 100 and is integrally formed with the valve body, resulting in the valve The forming and demolding of the body 100 is more difficult, the production cost is high, and the production efficiency is reduced. As shown in Figure 3, the bottom inlet type inlet valve, because the inlet end of the inlet pipe 4'is installed at the bottom of the toilet tank, the distance between the pressure stop valve 2'and the bottom of the toilet tank needs to be adjusted according to the height of the toilet tank , In order to realize that the pressure stop valve 2'is higher than the maximum water level set in the toilet tank, so the valve body 1'needs to be connected to the water inlet pipe 4'with a movable outer jacket, and the inner core pipe 23' is telescopic in the water inlet pipe 4'. The inner core tube 23' and the valve body 1'are two parts respectively. The valve body 1'is less difficult to form and demold, but the inner core tube 23' and the water inlet pipe 4'are sealed with a sealing ring after all. Due to the long-term failure of the circle, a water leakage point will be formed between the inner core pipe and the water inlet pipe, causing water from the toilet tank to enter the domestic water pipe network through the vertical water outlet channel, causing the water in the domestic water pipe network to be polluted.

For this reason, the inventor of the present invention has improved the toilet water tank inlet valve in response to the above-mentioned shortcomings.

Summary of the invention

The purpose of the present invention is to provide a toilet tank water inlet valve, which has a simple structure and has no water leakage points in the water inlet channel.

In order to achieve the above objective, the technical solution of the present invention is as follows:

A toilet tank water inlet valve includes a valve seat, a pressure water stop valve, a buoyancy control mechanism, and a water inlet pipe. The valve seat forms a housing cavity for installing the pressure water stop valve, and the bottom of the housing cavity is arranged at the water outlet end of the water inlet pipe , The bottom of the accommodating cavity is provided with a water outlet channel leading to the outer side wall of the water outlet end of the water inlet pipe. In the accommodating cavity of the valve seat, the water stop cushion is located at the water stop surface of the head of the water outlet end of the water inlet pipe. A pressure cavity is formed between the water stop cushion and the upper cover. The pressure cavity has water inlet and pressure relief holes respectively. The hole is communicated with the water inlet pipe, and the buoyancy control mechanism controls the opening or closing of the pressure relief hole.

Further, the pressure water stop valve is a back pressure water stop valve, including an upper cover, a rubber water stop pad, and a back pressure pad. The water inlet hole is provided on the guide post of the upper cover, and the guide post penetrates Rubber water-stop pad, the pressure relief hole is provided on the upper cover, the buoyancy control mechanism includes a water tank, a floating bucket, a connecting rod, a swing rod, and the back pressure pad is provided on the swing rod corresponding to the pressure relief hole One end of the pendulum rod is pivoted on the upper cover, and the other end of the pendulum rod is connected with the floating bucket through the connecting rod. The floating bucket is placed in the water tank, and the water tank is sleeved on the water inlet pipe.

Further, the pressure water stop valve is a needle valve pressure water stop valve, which includes an upper end cover, a water stop pad, and a stainless steel needle. The pressure relief through hole is provided through the water stop pad, and the water inlet through hole is also The stainless steel needle is inserted into the pressure relief through hole through the upper end cover. The stainless steel needle is provided with a water tank. The buoyancy control mechanism includes a water tank, a floating bucket, a connecting rod, and a swing rod. The pressure relief hole is provided with a stainless steel needle, one end of the swing rod is pivoted on the upper end cover, the other end of the swing rod is connected with the floating bucket through the connecting rod, the floating bucket is placed in the water tank, and the water tank is sleeved on the water inlet pipe.

Further, the water outlet of the water outlet channel is exposed on the outer surface of the bottom of the accommodating cavity and is higher than the highest water level set by the toilet tank.

Further, the water outlet of the water outlet channel is close to the outer side wall of the water outlet end of the water inlet pipe, and the water outlet channel is provided with a slope so that the water outlet of the water outlet channel faces the outer side wall of the water outlet end of the water inlet pipe.

Further, the water outlet of the water outlet channel is close to the outer side wall of the water outlet end of the water inlet pipe, the water outlet channel is an inclined channel, and the water outlet of the water outlet channel faces the outer side wall of the water outlet end of the water inlet pipe.

Further, the valve seat and the water outlet end of the water inlet pipe are integrally formed.

Further, the valve seat is clamped to the water outlet end of the water inlet pipe.

Further, the valve seat is screwed to the water outlet end of the water inlet pipe.

Further, the toilet tank water inlet valve is a bottom water inlet valve, that is, the water inlet end of the water inlet pipe is installed at the bottom of the toilet tank.

Further, the toilet tank water inlet valve is a side water inlet valve, that is, the water inlet end of the water inlet pipe is installed on the side of the toilet water tank.

Further, a draft tube is sheathed on the water inlet pipe, and the buoyancy control mechanism is sheathed on the draft tube.

Compared with the current technology, the main advantage of this case is that the inner core tube is replaced by the water inlet pipe, and the inner core tube is omitted, so that the water inlet pipe has the function of the inner core tube, that is, the water stop surface is formed directly on the water outlet end of the water inlet pipe. Compared with the bottom inlet type inlet valve, the valve body is easier to manufacture. Compared with the bottom inlet type inlet valve, the installation of the inner core tube in the valve seat is reduced, and unnecessary water leakage points are reduced.

Description of the drawings

Figure 1 is a side sectional view of a conventional side inlet water inlet valve;

Figure 2 is a top view of a conventional side inlet water inlet valve;

Figure 3 is a side sectional view of a conventional bottom-inlet water inlet valve;

Figure 4 is a perspective view of the bottom water inlet valve of the present invention;

Fig. 5 is a schematic diagram of the water inlet state of the bottom water inlet type back pressure inlet valve of the present invention;

Figure 6 is a second cross-sectional view of the bottom water inlet type back pressure water inlet valve of the present invention;

Figure 7 is an exploded view of the bottom water inlet type back pressure water inlet valve of the present invention;

8 is a cross-sectional view of the bottom water inlet type back pressure water inlet valve of the present invention in a water stop state;

Figure 9 is a working principle diagram 1 of the bottom water inlet type back pressure water inlet valve of the present invention;

Figure 10 is a schematic diagram of the cooperation between the rubber water stop pad and the upper cover of the bottom water inlet type back pressure water inlet valve of the present invention;

Figure 11 is a cross-sectional view of the bottom water inlet needle valve of the present invention in a water-stop state;

Figure 12 is a cross-sectional view of a bottom water inlet needle valve inlet valve of the present invention;

Figure 13 is a second cross-sectional view of the bottom water inlet needle valve of the present invention;

14 is a cross-sectional exploded view of the bottom water inlet needle valve water inlet valve of the present invention;

Figure 15 is a working principle diagram 1 of the bottom water inlet needle valve water inlet valve of the present invention;

16 is an exploded schematic view of the water stop pad and the stainless needle of the bottom water inlet needle valve water inlet valve of the present invention;

Fig. 17 is a schematic diagram of the clamped disassembly and disassembly of the valve seat of the bottom water inlet valve and the water inlet pipe of the present invention;

Figure 18 is an exploded schematic view of the bottom water inlet type back pressure water inlet valve valve seat and the water inlet pipe of the present invention;

19 is a schematic diagram of the clamping assembly of the bottom water inlet type back pressure water inlet valve seat and the water inlet pipe of the present invention;

20 is a schematic diagram of the threaded connection disassembly of the bottom water inlet valve seat and the water inlet pipe of the present invention;

Figure 21 is an exploded schematic view of the threaded connection between the bottom inlet type back pressure inlet valve valve seat and the inlet pipe of the present invention;

Figure 22 is a schematic view of the threaded connection assembly of the bottom water inlet type back pressure water inlet valve seat and the water inlet pipe of the present invention;

Figure 23 is an exploded schematic diagram of the bottom water inlet needle valve inlet valve seat and the water inlet pipe of the present invention;

24 is an exploded schematic view of the threaded connection between the inlet valve seat of the bottom inlet needle valve and the inlet pipe of the present invention;

Figure 25 is a perspective view 1 of the side inlet water inlet valve of the present invention;

Figure 26 is a cross-sectional view of the side water inlet needle valve water stop state of the present invention;

Figure 27 is the second cross-sectional view of the side-inlet needle valve water inlet valve of the present invention;

Figure 28 is a second perspective view of the side-inlet needle valve water inlet valve of the present invention;

[Corrected according to Rule 91 04.07.2020]
Figure 29 is a cross-sectional exploded view of the side inlet needle valve inlet valve of the present invention;

Fig. 30 is a working principle diagram 1 of the side-inlet needle valve water inlet valve of the present invention.

Detailed ways

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some implementations. For example, for those of ordinary skill in the art, other technical solutions can be obtained based on these drawings without creative labor.

As we all know, the toilet tank inlet valve is divided into side inlet type inlet valve and bottom inlet type inlet valve according to different water inlet methods. According to the different structure of pressure stop valve, it is divided into back pressure inlet valve and needle. Valve inlet valve. The present invention first focuses on the introduction of the embodiment of the bottom inlet water inlet valve. The structural relationship and principle of the patent of the present invention are also applicable to the side inlet water inlet valve, and then the embodiment of the side inlet water inlet valve is made brief introduction.

As shown in Figure 4, a water inlet valve at the bottom of a toilet tank includes a valve seat 1, a pressure stop valve, a buoyancy control mechanism 2, an inlet pipe 3. The valve seat 1 is arranged at the outlet end of the inlet pipe 3. The control mechanism 2 makes the water pressure or pressure relief formed inside the pressure water stop valve to realize the on and off of the water flow. Among them, the toilet tank bottom water inlet valve is divided into bottom water inlet back pressure water inlet valve and bottom water needle valve water inlet valve according to the different structure of pressure stop valve.

As shown in Figure 5, Figure 6, Figure 7, Figure 8, a bottom water inlet type back pressure water inlet valve, including a valve seat 1, a back pressure water stop valve 4, a buoyancy control mechanism 2, a water inlet pipe 3. The valve seat 1 is formed with an accommodation cavity 10 in which the valve back pressure pressure stop valve 4 is installed. The bottom 14 of the accommodation cavity 10 is provided at the water outlet end 31 of the water inlet pipe 3, and the bottom 14 of the accommodation cavity 10 is provided with a water inlet pipe The water outlet channel 11 of the outer side wall 34 of the outlet end of the water inlet 3, the water stop surface 32 of the head of the outlet end 31 of the inlet pipe 3 (as shown in Figure 9), the back pressure water stop valve 4 mainly includes an upper cover 42, a rubber water stop gasket 43. The back pressure pad 48, the upper cover 42 seals the rubber water stop cushion 43 in the accommodating cavity 10 of the valve seat 1. The rubber water stop cushion 43 is located at the head water stop surface 32 of the water outlet end 31 of the water inlet pipe 3. A pressure chamber 45 is formed between the water stop cushion 43 and the upper cover 42. The pressure chamber 45 has a water inlet 46 and a pressure relief hole 47, respectively. The water inlet 46 is arranged on the guide post 49 of the upper cover 42 (as shown in FIG. ), the guide post 49 penetrates the rubber water-stop pad 43 to guide the rubber water-stop pad 43, the water inlet 46 communicates with the water inlet pipe 3 (as shown in Figure 5), and the pressure relief hole 47 is provided in the upper cover 42 Above, the buoyancy control mechanism 2 is a common structure of the existing toilet water inlet valve, which is the prior art, including the water tank 20, the floating bucket 21, the connecting rod 22, the swing rod 23, and the pressure relief hole 47 on the swing rod 23 A back pressure pad 48 is provided. One end of the swing rod 23 is pivoted on the upper cover 42, and the other end of the swing rod 23 is connected to the floating bucket 21 through the connecting rod 22. The floating bucket 21 is placed in the water tank 20, and the water tank 20 is sleeved in the water inlet pipe 3. When the float 21 loses buoyancy in the water tank 20, the swing rod 23 rotates and falls on the upper cover 42, and the back pressure pad 48 leaves the pressure relief hole 47, and the pressure relief hole 47 is opened. When the float 21 is in the water tank 20 When subjected to buoyancy, the swing rod 23 rotates and rises on the upper cover 42, the back pressure pad 48 blocks the pressure relief hole 47, and the pressure relief hole 47 is closed.

As shown in Figures 5 to 10, the above-mentioned water inlet pipe 3 is vertically installed on the toilet tank (not shown in the figure), and the water inlet end of the water inlet pipe 3 is installed at the bottom of the toilet water tank and the domestic water pipe network (not shown in the figure). Usually, the back pressure water stop valve 4 is higher than the highest water level of the toilet tank to avoid siphoning, causing the water in the toilet tank to enter the domestic water pipe network through the water outlet channel 11 and the water inlet pipe 3 in turn. When in use, the water in the toilet tank is drained, causing the water in the water tank 20 of the buoyancy control mechanism 2 to leak out, the floating bucket 21 loses buoyancy, the swing rod 23 is not lifted upwards, and the back pressure pad 24 does not block the pressure relief hole 47. Therefore, the water flowing into the pressure cavity 45 from the water inlet 46 can be discharged from the pressure relief hole 4, and the pressure cavity 45 inside the rubber water stop cushion 43 will not generate water pressure. The rubber water stop cushion 43 continues under the action of the water inlet pressure. The side of the upper cover 42 is deformed, the rubber water stop pad 43 is separated from the head water stop surface 32 of the water outlet end 31 of the water inlet pipe 3, and the domestic water pipe network enters from the water inlet pipe 3, and then flows into the toilet tank from the water outlet channel 11. Purpose of water intake. When the water in the toilet tank rises to fill the floating bucket 21, the floating bucket 21 floats to drive the swing rod 23 to lift, and the back pressure pad 24 on the swing rod 23 presses the pressure relief hole 47 to make the rubber water stop cushion 43 flow into The water pressure of the inner pressure chamber 45 is getting larger and larger, which exceeds the water pressure of the outer side of the rubber water stop cushion 43, and the rubber water stop cushion 43 is elastically deformed and pressed against the head water stop surface of the water outlet end 31 of the water inlet pipe 3. On 32, close the water inlet to realize automatic water stop function.

As shown in Figure 11, Figure 12, Figure 13, Figure 14, a bottom water inlet needle valve inlet valve, the same as a bottom water inlet back pressure inlet valve is valve seat 1, buoyancy control mechanism 2 , Water inlet pipe 3, the difference is that the needle valve pressure stop valve 5 replaces the back pressure pressure stop valve 4. The valve seat 1 forms an accommodating cavity 10 in which a needle valve pressure stop valve 5 is installed. The bottom 14 of the accommodating cavity 10 is provided at the water outlet end 31 of the water inlet pipe 3, and the bottom 14 of the accommodating cavity 10 is provided with a water inlet pipe 3 The water outlet channel 11 on the outer side wall 34 of the water outlet end, the water-stop surface 32 of the head of the water outlet end 31 of the water inlet pipe 3 (as shown in Figure 19, Figure 20, Figure 21), the needle pressure water stop valve 5 mainly includes an upper end cover 52 , Water stop cushion 53, stainless steel needle 58, upper end cover 52 seals water stop cushion 53 in the accommodating cavity 10 of valve seat 1. Water stop cushion 53 is located at the head water stop surface 32 of the water outlet end 31 of the water inlet pipe 3. A pressure cavity 55 is formed between the water stop cushion 53 and the upper end cover 52. The pressure cavity 55 has a water inlet through hole 56 and a pressure relief through hole 57 respectively. The pressure relief through hole 57 is penetrated on the water stop cushion 53, and the water inlet The through hole 56 is also provided on the water stop cushion 53, and the buoyancy control mechanism 2 is a common structure of the existing toilet water inlet valve, which is the prior art, and includes a water tank 20, a floating bucket 21, a connecting rod 22, and a swing rod 23. The pendulum rod 23 is provided with a stainless steel needle 58 corresponding to the pressure relief through hole 57. The stainless steel needle 58 passes through the upper end cover 52 and is inserted into the pressure relief through hole 57. The stainless steel needle 58 is provided with a water groove 59 (as shown in Figure 16) One end of the pendulum rod 23 is pivoted on the upper end cover 52, and the other end of the pendulum rod 23 is connected to the floating bucket 21 through the connecting rod 22. The floating bucket 21 is placed in the water tank 20, and the water tank 20 is sleeved on the water inlet pipe 3. When buoyancy is lost in the water tank 20, the pendulum rod 23 rotates and falls on the upper end cover 52, the stainless steel needle 58 is partially drawn out from the pressure relief hole 47, and the pressure relief hole 47 is opened. When the float 21 is subjected to buoyancy in the water tank 20 , The swing rod 23 rotates and lifts on the upper end cover 52, the stainless steel needle 58 is completely inserted into the pressure relief hole 47, the pressure relief hole 47 is blocked, and the pressure relief hole 47 is closed.

As shown in Figures 11-16, the above-mentioned water inlet pipe 3 is vertically installed on the toilet tank (not shown), and the water inlet end of the water inlet pipe 3 is installed at the bottom of the toilet tank and the domestic water pipe network (not shown in the figure). Usually, the needle valve pressure stop valve 5 is higher than the highest water level of the toilet tank to avoid siphoning, causing the water in the toilet tank to pass through the water outlet channel 11 and the water inlet pipe 3 to enter the domestic water pipe network. When in use, the water in the toilet tank is drained, causing the water in the water tank 20 of the buoyancy control mechanism 2 to leak out, and the floating bucket 21 loses buoyancy. When the water in the water tank does not rise to the position of the floating bucket, the swing rod 23 is not lifted. The stainless steel needle 58 is not completely inserted into the pressure relief through hole 57 that blocks the top of the water stop cushion 53, so the water flowing into the inside of the water stop cushion 53 can be discharged from the pressure relief through hole 57, and the pressure cavity 55 inside the water stop cushion 53 is not Water pressure will be generated. Under the action of the water inlet pressure, the water stop cushion 53 will continue to deform on the side of the upper end cover 52. The water stop cushion 53 is separated from the water stop surface 32 of the water inlet pipe 3, and the domestic water pipe network enters from the water inlet pipe 3. , And then flow into the toilet tank from the water outlet channel 11 to achieve the purpose of water intake. When the water in the toilet tank rises to fill the floating bucket 21, the floating bucket 21 floats to drive the swing rod 23 to lift, and the stainless steel needle 58 on the swing rod 23 is completely inserted into the pressure relief through hole 57 on the top of the water stop cushion 53, so that The water flowing into the inner side of the water-stop cushion 53 cannot be discharged. The water pressure inside the water-stop cushion 53 is getting larger and larger, and it exceeds the water pressure on the outside of the water-stop cushion 53. The water-stop cushion 53 is elastically deformed and pressed against the inlet pipe 3. On the water stop surface 32, the water inlet is closed to realize the automatic water stop function.

Compared with the prior art, the main advantages of the two types of bottom-inlet toilet tank inlet valves listed above are that the inner core tube is omitted, and the inner core tube is replaced by the inlet tube, so that the inlet tube has the function of the inner core tube, namely The water stop surface is formed directly on the water outlet end of the inlet pipe. Compared with the bottom inlet toilet tank water inlet valve, the inner core pipe component is omitted, which reduces the installation of the inner core pipe in the valve seat and reduces unnecessary water leakage points. Compared with the side inlet water inlet valve, the valve body is easier to manufacture.

As shown in Figures 5-8 and 11-14, the bottom of the accommodating cavity 10 of the valve seat 1 is set at the water outlet end 31 of the water inlet pipe 3, and the bottom 14 of the accommodating cavity 10 of the valve seat 1 forms a water outlet channel 11 , The water outlet 12 of the water outlet channel 11 is exposed on the outer surface 19 of the accommodating cavity bottom, which is higher than the highest water level set by the toilet tank. It is higher than the highest water level 7 set by the toilet tank, so that the water outlet 12 of the water outlet channel 11 is directly connected to atmospheric pressure, and there will be no water seal between the water outlet channel 11 and the bottom of the toilet tank. When the water in the water inlet pipe 3 is suddenly lost When the rubber water-stop pad or the water-stop pad cannot block the head water-stop surface 32 of the water outlet end 31 of the water inlet pipe 3, the atmospheric pressure is directly added to the water inlet pipe 3 through the water outlet 12 of the water outlet channel 11 to make the water inlet The air pressure in the passage 11 is relatively balanced with the outside to prevent siphoning, while ensuring that the anti-siphon function never fails, and the risk of failure of the anti-siphon pad or anti-siphon plug component and structure is omitted, and the valve seat structure can be designed more simply.

As shown in Figures 5 and 12, the water outlet 12 of the water outlet channel 11 is close to the outer side wall 34 of the outlet end 31 of the water inlet pipe 3. The water outlet channel 11 is provided with a slope 13 so that the water outlet 12 of the water outlet channel 11 faces the water inlet pipe 3 Of course, the outlet channel 11 can also be an inclined channel, so that the outlet 12 of the outlet channel 11 faces the outer side wall 34 of the outlet end 31 of the inlet pipe 3, so that the The water flows downstream along the outer side wall 34 of the water inlet pipe 3 into the toilet tank. The water will not splash randomly and can reduce the water inlet noise. At the same time, the water outlet 12 of the water outlet channel 11 is exposed on the outer surface 15 of the accommodating cavity bottom. Relatively closed empty pipes, the water flowing in the pipe will not form resonance, and the noise of water intake will also be reduced.

As shown in Figures 4, 5, and 12, in order to better prevent water splashing, a diversion tube 6 is sleeved on the water inlet pipe 3. The upper end 61 of the diversion pipe 6 is in the shape of a funnel and is connected to the water outlet channel 11. Below the water outlet 12. Of course, after the draft tube 6 is sheathed on the water inlet pipe 3, the buoyancy control mechanism 2 is sheathed on the draft tube 6.

As shown in FIGS. 5-8 and 11-14, the bottom 14 of the accommodating cavity 10 of the valve seat 1 and the water outlet 31 of the water inlet pipe 3 are integrally formed. Of course, the valve seat 1 cannot be moved on the inlet pipe 3 in this way. Especially for the bottom inlet type water inlet valve, the height of the valve seat 1 on the inlet pipe 3 cannot be adjusted, resulting in back pressure pressure stop valve 4, needle The valve pressure stop valve 5 cannot be adjusted according to the height of the toilet tank and the distance between the bottom of the toilet tank, but as long as the height of the inlet pipe is set appropriately, it can meet the installation needs of common toilet tanks.

In view of this, the bottom of the accommodating cavity of the valve seat is movably installed at the outlet end of the water inlet pipe, as shown in Figure 17, Figure 18, Figure 19, and Figure 23, the bottom 14 of the accommodating cavity 10 of the valve seat 1 is clamped on the inlet The water outlet end 31 of the water pipe 3, the side surface of the water outlet end 31 protrudes out the clamping teeth 35, the bottom 14 of the accommodating cavity 10 of the valve seat 1 forms a socket pipe 15, the inner wall of the socket pipe 15 forms a clamping groove 16, and the valve seat 1 passes the clamping The tooth 35 is screwed into the slot 16 to be clamped on the outlet end 31 of the water inlet pipe 3. It can also be shown in Figure 20, Figure 21, Figure 22, Figure 24, the valve seat 1 is screwed to the water outlet end 31 of the water inlet pipe 3, and the side surface of the water outlet end 31 is formed with an external thread 36. The housing of the valve seat 1 The bottom 14 of the cavity 10 forms a socket tube 15, the inner wall of the socket tube 15 forms an internal thread 17, and the valve seat 1 is screwed into the external thread 36 through the internal thread 17 to be screwed to the water outlet end 31 of the water inlet pipe 3. In this way, according to the height of the toilet tank, the valve seat 1 with different height sleeves can be selected to match the toilet tank of different height, and it is also convenient for the valve seat 1 and the back pressure pressure stop valve 4 and the needle pressure stop valve 5 to enter The water pipe is easy to assemble and disassemble. When the pressure stop valve fails, replace the back pressure stop valve 4 and the needle valve pressure stop valve 5.

The above embodiments of the bottom water inlet valve give a complete introduction to the innovations of the present invention regarding the structure improvement of the inlet pipe, the anti-siphon, and the replaceable valve seat. Among them, there are innovations in the improvement of the inlet pipe structure and the anti-siphon. The water inlet valve is also applicable. The side inlet needle valve inlet valve is listed below for description

As shown in Figures 25-30, a toilet tank side water inlet valve includes a valve seat 8, a pressure stop valve, a buoyancy control mechanism 2, and a water inlet pipe 9. The water-stop surface 92 of the head of the water outlet end 91 of the water inlet pipe 9 (as shown in Figs. 29 and 30), the valve seat 8 is formed with a housing cavity 80, and the bottom 84 of the housing cavity 80 is arranged at the water outlet end 91 of the water inlet pipe 9 , The bottom 84 of the accommodating cavity 80 is provided with a water outlet channel 81 leading to the outer side wall 94 of the water outlet end of the water inlet pipe 9, and the accommodating cavity 80 is equipped with a needle valve pressure stop valve 5, and a back pressure pressure stop valve can also be installed, The buoyancy control mechanism 2 controls the needle valve pressure stop valve 5 or the back pressure pressure stop valve to realize the on-off of the water flow. The buoyancy control mechanism 2, the needle valve pressure stop valve 5, the back pressure pressure stop valve structure and the drainage principle are exactly the same as the bottom water inlet valve introduced above, and will not be repeated here.

As shown in Figures 27 and 28, the water outlet 82 of the water outlet channel 81 is exposed on the outer surface 89 of the accommodating cavity bottom, which is higher than the highest water level 7 set by the toilet tank, so that the water outlet 82 of the water outlet channel 81 is directly connected to the atmospheric pressure. Connected, no water seal will be formed between the water outlet channel 81 and the bottom of the toilet tank to prevent siphon generation and ensure that the anti-siphon function never fails.

As shown in Figures 27 and 28, the outlet 82 of the outlet channel 81 is close to the outer side wall 94 of the outlet end 91 of the water inlet pipe 9, and the outlet channel 81 is provided with an inclined surface 83 or an inclined channel so that the outlet 82 of the outlet channel 81 faces The outer side wall 94 of the water outlet end 91 of the water inlet pipe 9 makes the water from the water outlet channel 91 flow downstream along the outer side wall 94 of the water inlet pipe 9 into the toilet tank to prevent the water from splashing. To better prevent water splashing, a diversion tube 6 is sleeved on the water inlet pipe 9 and the upper end 61 of the diversion pipe 6 is in the shape of a funnel and is connected under the water outlet 82 of the water outlet channel 81. After the draft tube 6 is sheathed on the inlet pipe 9, the buoyancy control mechanism 2 is sheathed on the draft tube 6.

The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the industry should understand that the present invention is not limited by the foregoing embodiments. The foregoing embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and improvements, these changes and improvements all fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

A toilet water tank inlet valve, comprising a valve seat, a pressure stop valve, a buoyancy control mechanism, and a water inlet pipe. The valve seat is characterized in that an accommodating cavity for installing the pressure stop valve is formed on the valve seat, and the bottom of the accommodating cavity is arranged at the inlet The water outlet end of the water pipe, the bottom of the accommodating cavity is provided with a water outlet channel leading to the outer side wall of the water outlet end of the water inlet pipe. The head of the water outlet end of the water inlet pipe is a water surface. The pressure water stop valve includes an upper cover and a water stop cushion. The water stop cushion is sealed in the accommodating cavity of the valve seat. The water stop cushion is located at the head water stop surface of the water outlet end of the water inlet pipe. A pressure cavity is formed between the water stop cushion and the upper cover. The pressure cavity has water inlet and pressure relief respectively. The water inlet hole communicates with the water inlet pipe, and the buoyancy control mechanism controls the opening or closing of the pressure relief hole.
A toilet tank water inlet valve according to claim 1, wherein the pressure water stop valve is a back pressure water stop valve, including an upper cover, a rubber water stop pad, and a back pressure pad. The water inlet hole is provided on the guide post of the upper cover, the guide post penetrates the rubber water-stop pad, the pressure relief hole is provided on the upper cover, and the buoyancy control mechanism includes a water tank, a floating bucket, a connecting rod, and a pendulum. The back pressure pad is provided at the corresponding pressure relief hole on the pendulum rod. One end of the pendulum rod is pivoted on the upper cover, and the other end of the pendulum rod is connected with the floating bucket through the connecting rod. The floating bucket is placed in the water tank and the water tank is sleeved. On the inlet pipe.
A toilet tank water inlet valve according to claim 1, wherein the pressure stop valve is a needle valve pressure stop valve, including an upper end cover, a water stop pad, and a stainless steel needle. The through hole is penetrated and arranged on the water stop cushion, the water inlet through hole is also arranged on the water stop cushion, the stainless steel needle is inserted into the pressure relief through hole through the upper end cover, the stainless steel needle is provided with a water groove, the buoyancy control The mechanism includes a water tank, a floating bucket, a connecting rod, and a pendulum rod. The pendulum rod is provided with a stainless steel needle at the corresponding pressure relief hole. One end of the pendulum rod is pivoted on the upper end cover, and the other end of the pendulum rod is connected to the floating bucket through the connecting rod. Place in the water tank, the water tank is sleeved on the water inlet pipe.
The toilet water tank inlet valve of claim 1, wherein the water outlet of the water outlet channel is exposed on the outer surface of the bottom of the accommodating cavity and is higher than the highest water level set by the toilet water tank.
The toilet tank water inlet valve of claim 4, wherein the outlet of the water outlet channel is close to the outer side wall of the water outlet end of the water inlet pipe, and the water outlet channel is provided with an inclined surface or an inclined channel so that the water outlet channel The water outlet faces the outer side wall of the water outlet end of the water inlet pipe.
The toilet tank water inlet valve of claim 1, wherein the valve seat and the water outlet end of the water inlet pipe are integrally formed.
The toilet tank water inlet valve of claim 1, wherein the valve seat is clamped on the water outlet end of the water inlet pipe.
The toilet tank water inlet valve of claim 1, wherein the valve seat is screwed to the water outlet end of the water inlet pipe.
The toilet tank water inlet valve according to claim 1, wherein the toilet water tank water inlet valve is a bottom water inlet valve or a side water inlet valve.
A toilet tank water inlet valve according to claim 9, wherein the water inlet pipe is sleeved with a diversion pipe, and the buoyancy control mechanism is sleeved on the diversion pipe.