CN110106948A - A kind of anti-siphonic closet tank intake valve of water - Google Patents

Abstract

The invention discloses a water inlet valve for an anti-siphon toilet water tank, which comprises a valve seat, a pressure water stop valve, a buoyancy control mechanism, and a water inlet pipe. An accommodating chamber is formed on the valve seat, and the bottom of the accommodating chamber 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 wall of the water outlet end of the water inlet pipe. The water outlet of the water outlet channel is exposed on the outer surface of the bottom of the accommodating cavity, which is higher than the maximum water level line set by the toilet tank, and the water is sealed under pressure. The valve is installed in the accommodating cavity, and the buoyancy control mechanism makes the water pressure inside the pressure water stop valve or releases the pressure to realize the on-off of the water flow. The advantage of this case is that the water outlet of the water outlet channel is directly exposed at the bottom of the valve seat, which is higher than the highest water level set by the toilet tank, so that the water outlet of the water outlet channel is directly connected to the atmospheric pressure. The water outlet of the channel directly feeds the atmospheric pressure into the water inlet pipe, so that the air pressure in the water inlet channel is relatively balanced with the outside, preventing siphon generation, and ensuring that the anti-siphon function will never fail.

Description

Water inlet valve for anti-siphon toilet water tank

technical field

The invention belongs to a water inlet valve of a toilet water tank, in particular to an anti-siphon pressure water-stop water inlet valve of a toilet water tank.

Background technique

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

As shown in Figure 1 and Figure 2, the CN102345315U document discloses a side-inlet type back pressure water inlet valve, which includes a valve body 100, a pressure water stop valve 200, a buoyancy control mechanism 300, and a water inlet pipe 400, which is connected to On the side of the valve body 100, the pressure water stop valve 200 includes an upper cover 201, a rubber water stop pad 202, and an inner core pipe 203. A vertical water outlet channel 101 is formed on the valve body 100, and the inner core pipe 203 is horizontally arranged on the valve body 100. Among them, the horizontal water inlet channel 102 is formed between the inner core pipe 203 and the valve body 100, the water outlet end 2031 of the inner core pipe communicates with the vertical water outlet channel 101, the end surface of the inner core pipe water inlet end 2032 forms a water stop surface, and the rubber water stop pad 202 is set at the water inlet end 2032 of the inner core tube, the upper cover 201 seals the rubber water-stop pad 202 and the valve body 100 together, and a pressure chamber is formed between the upper cover 201 and the rubber water-stop pad 202, and the pressure chambers have water inlet holes respectively The water inlet hole communicates with the pressure relief hole and the horizontal water inlet channel 102, and a buoyancy control mechanism 300 is arranged 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 water stop valve 200 is higher than the highest water level of the toilet tank to avoid siphoning , causing the water in the toilet water 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. During use, the buoyancy control mechanism 300 loses buoyancy due to the water in the toilet tank is discharged, the pressure relief hole is opened, and water enters the toilet tank from the water inlet pipe 400, the pressure water 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 hole to prevent the pressure relief hole from draining outward, because the water inlet hole of the pressure chamber communicates with the water inlet pipe 400, causing the water pressure in the pressure chamber to suddenly increase, causing the rubber water-stop pad 202 to elastically expand and deform, blocking the inner core The water stop surface of the pipe water inlet end 2032 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 type back-pressure water inlet valve, including a valve body 1', a pressure water 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 pad 22', and an inner core tube 23'. 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 setting a sealing ring, and the outer casing of the valve body 1' is connected to the water inlet pipe 4' , the vertical water outlet channel 12' is formed between the valve body 1', the inner core pipe 23' and the water inlet pipe 4'. 1' are sealed together, and a pressure chamber 24' is formed between the upper cover 21' and the rubber water-proof pad 22'. It communicates with the water inlet channel 11', and a buoyancy control mechanism 3' is arranged 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 water stop valve 2' is higher than the highest water level of the toilet tank to avoid The siphon causes the water in the toilet water tank to enter the domestic water pipe network sequentially through the water inlet pipe 4', the vertical water inlet channel 11', the inner core pipe 23', and the vertical water outlet channel 12'. When in use, the principle is the same as that of the water inlet valve of the side-inlet toilet tank, because 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 water inlet pipe. 4' and the pressure water stop valve 2' enter the toilet tank, at the same time, a small part of the water enters the pressure chamber 24' through the water inlet hole 241', and then flows out through the pressure relief hole 242', at this time to achieve the purpose of water intake; 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', preventing the pressure relief hole 242' from draining outwards, because the water inlet hole 241' of the pressure chamber is connected to the water inlet pipe 4 ' connected, resulting in a sudden increase in the water pressure in the pressure chamber, causing elastic expansion and deformation of the rubber water-stop pad, blocking the water-stop surface of the water outlet end 231' of the inner core tube, cutting off the vertical water inlet channel 11' and the vertical water outlet The water flow between channels 12' achieves the purpose of water stop.

In order to prevent the water in the domestic water pipe network from being polluted, the water inlet valves of the above two toilet tanks need to be designed with anti-siphonage, as shown in Fig. 1 and Fig. The water outlet extends to the bottom of the toilet tank, and the highest water level line is set far from the bottom of the toilet tank. It is easy to form a water seal between the vertical water outlet channel and the bottom of the toilet tank. An anti-siphon plug 500 is arranged between them. When the water in the water inlet pipe loses pressure suddenly, the rubber water-stop pad 202 cannot block the water-stop surface of the inner core pipe, and the anti-siphon plug 500 blocks the inner core pipe water outlet 2031 due to back suction. , prevent the water in the toilet tank from flowing back into the domestic water pipe network, and prevent the water in the domestic water pipe network from being polluted. As shown in Figure 3, the water outlet of the vertical water outlet channel 12' of the bottom inlet type water inlet valve also extends to the bottom of the toilet tank. It is easy to form a water seal between them. Therefore, an anti-siphon pad 5' is provided in the vertical water outlet channel. When the water in the water inlet pipe 4' loses pressure suddenly, the rubber water-stop pad 22' cannot block the inner core pipe. 23' of the water stop surface, the anti-siphon pad 5' seals the vertical water outlet channel 12' due to back suction, prevents the water in the toilet tank from flowing back into the domestic water pipe network, and prevents the water in the domestic water pipe network from being polluted.

For this reason, the inventor has improved the water inlet valve of the toilet water tank for the above-mentioned shortcoming.

Contents of the invention

The purpose of the present invention is to provide an anti-siphon toilet water tank water inlet valve, when the water in the water inlet pipe suddenly loses pressure, it can quickly make the air pressure in the water inlet channel and the outside maintain a relative balance, prevent siphon generation, and ensure anti-siphon Functions never fail.

In order to achieve the above object, the technical scheme of the present invention is as follows:

A water inlet valve for an anti-siphon toilet water tank, comprising a valve seat, a pressure water stop valve, a buoyancy control mechanism, and a water inlet pipe. An accommodation chamber is formed on the valve seat, and the bottom of the accommodation chamber is arranged at the water outlet end of the water inlet pipe. The bottom of the toilet is provided with a water outlet channel leading to the outer wall of the water outlet end of the water inlet pipe. The water outlet of the water outlet channel is exposed on the outer surface of the bottom of the accommodating cavity, which is higher than the highest water level line set by the toilet tank. The pressure water stop valve is installed on the In the accommodating cavity, the buoyancy control mechanism makes the water pressure inside the pressure water stop valve form or release the pressure to realize the on-off of the water flow.

Further, the pressure water stop valve includes an upper cover, a rubber water stop pad, and an inner core tube. The end surface of the water outlet end of the inner core tube forms a water stop surface, and the water inlet end of the inner core tube is inserted into the water inlet pipe to form a vertical water inlet channel. , the seal between the inner core pipe and the water inlet pipe is realized by setting a sealing ring, the rubber water-stop pad is set at the water outlet end of the inner core pipe, the upper cover seals the rubber water-stop pad and the valve body together, and the gap between the upper cover and the rubber water-stop pad A pressure chamber is formed between them. The pressure chamber has a water inlet hole and a pressure relief hole respectively. The water inlet hole communicates with the vertical water inlet channel. The buoyancy control mechanism controls the opening or closing of the pressure relief hole.

Further, the head of the water outlet end of the water inlet pipe stops at the water surface, and the pressure water stop valve includes an upper cover and a water stop pad, and the upper cover seals the water stop pad in the accommodation chamber of the valve seat, and the water stop pad is located at At the water stop surface of the head of the water outlet end of the water inlet pipe, a pressure chamber is formed between the water stop pad and the upper cover. The pressure chamber has a water inlet hole and a pressure relief hole respectively. The water inlet hole communicates with the water inlet pipe, and the buoyancy control mechanism controls the pressure relief hole. On or off.

Further, the pressure water stop valve is a back pressure water stop valve, which includes an upper cover, a rubber water stop pad, and a back pressure pad. The water inlet hole is arranged on the guide post of the upper cover, and the guide post penetrates through the The rubber water-stop pad, the pressure relief hole is arranged on the top of the upper cover, the buoyancy control mechanism includes a water tank, a buoy, a connecting rod, and a swing rod, and the back pressure hole is set on the swing rod corresponding to the pressure relief hole. Pad, one end of the swing rod is pivotally arranged on the upper 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 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 arranged on the water stop pad, and the water inlet through hole is also Set on the water-stop pad, the stainless steel needle passes through the upper end cover and is inserted into the pressure relief through hole. A stainless steel needle is provided at the pressure relief hole, one end of the swing rod is pivotally arranged on the upper end cover, and the other end of the swing rod is connected with the floating bucket through a 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 close to the outer 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 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 wall of the water outlet end of the water inlet pipe, and the water outlet channel is an inclined channel, so that the water outlet of the water outlet channel faces the outer wall of the water outlet end of the water inlet pipe.

Further, the valve seat is integrally formed with the water outlet end of the water inlet pipe.

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

Further, the water inlet valve of the toilet water tank 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 water tank.

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

Further, the water inlet pipe is sleeved with a guide tube, and the buoyancy control mechanism is sleeved on the guide tube.

Compared with the current technology, the main advantage of this case is that the water outlet of the water outlet channel is directly exposed at the bottom of the valve seat, which is higher than the maximum water level set by the toilet tank, so that the water outlet of the water outlet channel is directly connected to the atmospheric pressure, and the water outlet channel will not be in contact with the air pressure. A water seal is formed between the bottom of the toilet tank. When the water in the water inlet pipe suddenly loses pressure, causing the rubber water-stop pad to fail to block the water-stop surface of the water inlet pipe, the water outlet of the water outlet channel will directly fill the water inlet pipe with atmospheric pressure, so that The air pressure in the water inlet channel is relatively balanced with the outside to prevent siphon generation, and at the same time ensure that the anti-siphon function will never fail, and also remove the anti-siphon pad or anti-siphon plug.

Description of drawings

Fig. 1 is a side sectional view of an existing side water inlet valve;

Fig. 2 is the top view of the existing side water inlet valve;

Fig. 3 is a side sectional view of an existing bottom water inlet valve;

Fig. 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 water inlet valve of the present invention;

Fig. 6 is the second sectional view of the bottom water inlet type back pressure water inlet valve of the present invention;

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

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

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

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

Fig. 11 is a cross-sectional view of the water-stopping state of the bottom-inlet needle valve water inlet valve of the present invention;

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

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

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

Fig. 15 is the working principle diagram 1 of the bottom water inlet type needle valve water inlet valve of the present invention;

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

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

Fig. 18 is an exploded schematic diagram of the connection between the valve seat and the water inlet pipe of the bottom water inlet type back pressure water inlet valve of the present invention;

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

Fig. 20 is a dismantling schematic diagram of the screw connection between the bottom water inlet valve seat and the water inlet pipe of the present invention;

Fig. 21 is an exploded schematic diagram of the screw connection between the valve seat and the water inlet pipe of the bottom water inlet type back pressure water inlet valve of the present invention;

Fig. 22 is a schematic diagram of the assembly of the bottom-inlet type back-pressure water inlet valve seat and the water inlet pipe threaded connection of the present invention;

Fig. 23 is an exploded schematic diagram of the connection between the valve seat of the bottom inlet needle valve inlet valve and the inlet pipe of the present invention;

Fig. 24 is an exploded schematic diagram of the threaded connection between the seat of the bottom-inlet needle valve and the water inlet pipe of the present invention;

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

Fig. 26 is a cross-sectional view of the water-stopping state of the side-inlet needle valve water inlet valve of the present invention;

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

Fig. 28 is the second perspective view of the side water inlet needle valve water inlet valve of the present invention;

Fig. 29 is a cross-sectional exploded view of the side-inlet needle valve water inlet valve of the present invention;

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

Detailed ways

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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, those of ordinary skill in the art can also obtain other technical solutions according to these drawings without paying creative labor.

As we all know, the water inlet valve of the toilet tank is divided into side water inlet valve and bottom water inlet valve according to different water inlet methods. According to the different structure of the pressure water stop valve, it is divided into back pressure water inlet valve, needle Valve inlet valve. The present invention first focuses on the embodiment of the bottom inlet valve. The structural relationship and principle of the patent of the present invention are also applicable to the side inlet valve, and then the embodiment of the side inlet valve is described. 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 water stop valve, a buoyancy control mechanism 2, and a water inlet pipe 3. A housing chamber is formed on the valve seat 1, and the housing chamber The bottom is arranged at the water outlet end of the water inlet pipe 3, and the bottom of the accommodating chamber is provided with a water outlet channel leading to the outer wall of the water outlet end of the water inlet pipe. The set maximum water level line, the pressure water stop valve is installed in the accommodating chamber, the pressure water stop valve is the existing technology, the pressure water stop valve includes the upper cover, the rubber water stop pad, the inner core tube, and the water outlet end face of the inner core tube The water stop surface is formed, the water inlet end of the inner core pipe is inserted into the water inlet pipe to form a vertical water inlet channel, the seal between the inner core pipe and the water inlet pipe is realized by setting a sealing ring, and the rubber water stop pad is set at the water outlet end of the inner core pipe, The upper cover seals the rubber water-stop pad and the valve body together, and a pressure chamber is formed between the upper cover and the rubber water-stop pad. The pressure chamber has a water inlet hole and a pressure relief hole respectively. The water inlet hole communicates with the vertical water inlet channel. The buoyancy control mechanism 2 opens or blocks the pressure relief hole to form water pressure inside the pressure water stop valve or release the pressure to realize the on-off of the water flow. Among them, the bottom-inlet water inlet valve of the toilet tank is divided into a bottom-inlet back-pressure water inlet valve and a bottom-inlet needle valve water inlet valve according to the different structure of the pressure water stop valve.

As shown in Fig. 5, Fig. 6, Fig. 7 and Fig. 8, a bottom-inlet type back pressure water inlet valve includes a valve seat 1, a back pressure water stop valve 4, a buoyancy control mechanism 2, and a water inlet pipe 3. The valve seat 1 forms an accommodating cavity 10 for installing the valve back pressure pressure water stop valve 4, the bottom 14 of the accommodating cavity 10 is set 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 of the outer wall 34 of the water outlet end, the head of the water outlet end 31 of the water inlet pipe 3, the water stop surface 32 (as shown in Figure 9), the back pressure water stop valve 4 mainly includes an upper cover 42, a rubber water stop pad 43. The back pressure pad 48, the upper cover 42 seals the rubber water-stop pad 43 in the accommodating chamber 10 of the valve seat 1, the rubber water-stop pad 43 is located at the head water-stop surface 32 of the water outlet end 31 of the water inlet pipe 3, and the rubber water-stop pad 43 A pressure chamber 45 is formed between the water-stop pad 43 and the upper cover 42. The pressure chamber 45 has a water inlet hole 46 and a pressure relief hole 47 respectively. The water inlet hole 46 is arranged on the guide post 49 of the upper cover 42 (as shown in FIG. ), the guide post 49 penetrates through the rubber water-stop pad 43 to play a guiding role for the rubber water-stop pad 43, the water inlet hole 46 communicates with the water inlet pipe 3 (as shown in Figure 5), and the pressure relief hole 47 is arranged on the upper cover 42 In the 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 barrel 21, the connecting rod 22, the swing rod 23, and the corresponding pressure relief hole 47 on the swing rod 23 There is a back pressure pad 48, one end of the swing rod 23 is pivoted on the upper cover 42, the other end of the swing rod 23 is connected with the buoy 21 through the connecting rod 22, the buoy 21 is placed in the water tank 20, and the water tank 20 is set on the water inlet pipe 3 Above, when the buoyant bucket 21 loses its buoyancy in the water tank 20, the swing rod 23 rotates and falls on the upper cover 42, the back pressure pad 48 leaves the pressure relief hole 47, and the pressure relief hole 47 is opened. When subjected to buoyancy, the fork 23 rotates and lifts on the loam cake 42, and the back pressure pad 48 blocks the pressure relief hole 47, and the pressure relief hole 47 is closed.

As shown in Figures 5-10, 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 tank and the domestic water pipe network (not shown in the figure). Outlet), usually the back pressure water stop valve 4 is higher than the highest water level of the toilet tank to avoid siphon, 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 successively. During use, because the water in the toilet tank is discharged, the water in the water tank 20 of the buoyancy control mechanism 2 leaks out, the floating barrel 21 loses buoyancy, the swing rod 23 does not lift up, and the back pressure pad 24 does not block the pressure relief hole 47. Therefore, the water flowing into the pressure chamber 45 from the water inlet hole 46 can be discharged from the pressure relief hole 4, and the pressure chamber 45 inside the rubber water-stop pad 43 will not generate water pressure, and the rubber water-stop pad 43 will last under the action of the water inlet pressure. One side of the upper cover 42 is deformed, and 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. 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 to purpose of water ingress. When the water in the toilet tank rises to full over 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, so that the water flowing into the rubber water-stop pad 43 The water pressure of the pressure chamber 45 inside is getting bigger and bigger, so big that it exceeds the water inlet water pressure outside the rubber water-stop pad 43, and the rubber water-stop pad 43 undergoes elastic deformation and presses against the head water-stop surface of the water outlet end 31 of the water inlet pipe 3. 32, close the water inlet to realize the automatic water stop function.

As shown in Figure 11, Figure 12, Figure 13, and Figure 14, a bottom-inlet needle valve inlet valve is the same as a bottom-inlet back-pressure inlet valve in that it has a valve seat 1 and a buoyancy control mechanism 2 , The water inlet pipe 3, the difference is that the needle valve pressure water stop valve 5 replaces the back pressure pressure water stop valve 4. On the valve seat 1 is formed an accommodating cavity 10 for installing the needle valve pressure water stop valve 5, the bottom 14 of the accommodating cavity 10 is arranged on the water outlet end 31 of the water inlet pipe 3, and the bottom 14 of the accommodating cavity 10 is provided with a hole leading to the water inlet pipe 3. The water outlet channel 11 of the outer side wall 34 of the water outlet end, the water surface 32 at the head of the water outlet end 31 of the water inlet pipe 3 (as shown in Figure 19, Figure 20, and Figure 21), the needle valve pressure water stop valve 5 mainly includes an upper end cover 52 , water-stop pad 53, stainless steel needle 58, the upper end cap 52 seals the water-stop pad 53 in the accommodation chamber 10 of the valve seat 1, the water-stop pad 53 is positioned 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 pad 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 through hole 56 is also arranged on the water stop pad 53. The buoyancy control mechanism 2 is a common structure of the existing toilet water inlet valve, which is the prior art, and includes the water tank 20, the floating barrel 21, the connecting rod 22, the swing rod 23, The pendulum 23 is provided with a stainless steel needle 58 corresponding to the pressure relief through hole 57, and the stainless steel needle 58 passes through the upper end cover 52 and is inserted in the pressure relief through hole 57, and the stainless steel needle 58 is provided with a water tank 59 (as shown in Figure 16) One end of the swing rod 23 is pivotally arranged on the upper end cover 52, the other end of the swing rod 23 is connected with the buoy 21 through the connecting rod 22, the buoy 21 is placed in the water tank 20, and the water tank 20 is set on the water inlet pipe 3, when the buoy 21 When the buoyancy is lost in the water tank 20, the swing rod 23 rotates and falls on the upper end cover 52, and the stainless steel needle 58 is partially drawn out from the pressure relief hole 47, and the pressure relief hole 47 is opened. , the swing rod 23 rotates and lifts on the upper end cover 52, and the stainless steel needle 58 is fully inserted in the pressure relief hole 47 to block the pressure relief hole 47, 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 in the figure), 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 water stop valve 5 is higher than the highest water level of the toilet tank to avoid siphon, 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 successively. During use, because the water in the toilet water tank is discharged, thereby causing the water in the water tank 20 of the buoyancy control mechanism 2 to leak, the floating bucket 21 loses buoyancy. The stainless steel needle 58 is not fully inserted into the pressure relief through hole 57 that blocks the top of the water stop pad 53, so the water flowing into the inside of the water stop pad 53 can be discharged from the pressure relief through hole 57, and the inner pressure cavity 55 of the water stop pad 53 does not Water pressure will be generated, and the water stop pad 53 will continue to deform to the side of the upper end cover 52 under the action of the water inlet pressure. , 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 water tank rises to full when crossing the floating barrel 21, the floating barrel 21 floats and drives the swing bar 23 to lift, and the stainless steel needle 58 on the swing bar 23 is fully inserted in the pressure relief through hole 57 on the top of the water stop pad 53, so that The water flowing into the inner side of the water-stop pad 53 cannot be discharged, and the water pressure inside the water-stop pad 53 is getting bigger and bigger, so large that it exceeds the water inlet water pressure outside the water-stop pad 53, and the water-stop pad 53 undergoes elastic deformation and presses against the water inlet pipe 3. On the water-stop surface 32, close the water inlet to realize the automatic water-stop function.

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

As shown in Figures 5-8 and Figures 11-14, the bottom of the accommodation chamber 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 accommodation chamber 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 bottom of the accommodating cavity, which is higher than the maximum water level line set by the toilet tank. It is higher than the maximum water level line 7 set by the toilet tank, so that the water outlet 12 of the water outlet channel 11 is directly connected to the atmospheric pressure, and no water seal will be formed between the water outlet channel 11 and the bottom of the toilet tank. When the water in the water inlet pipe 3 suddenly loses 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 channel 11 is relatively balanced with the outside to prevent siphon generation, and at the same time ensure that the anti-siphon function will never fail, and also eliminate the risk of failure of anti-siphon pads or anti-siphon plug components and structures, and the valve seat structure can be designed more simply.

As shown in Figure 5 and Figure 12 again, the water outlet 12 of the water outlet channel 11 is close to the outer wall 34 of the water outlet end 31 of the water inlet pipe 3, and 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 The outer wall 34 of the water outlet 31 of the water outlet 31, of course, the water outlet channel 11 can also be an inclined channel, so that the water outlet 12 of the water outlet channel 11 faces the outer wall 34 of the water outlet 31 of the water inlet pipe 3, so that the water outlet from the water outlet 11 The water flows into the toilet tank along the outer wall 34 of the water inlet pipe 3, the water will not splash randomly, and the noise of water inlet can be reduced. Relatively closed empty pipes, water flowing in the pipes will not form resonance, and the noise of water ingress will also be reduced.

As shown in Figure 4, Figure 5, and Figure 12, in order to better prevent water from splashing, the water inlet pipe 3 is covered with a guide tube 6, and the upper end 61 of the guide tube 6 is funnel-shaped, and is connected to the outlet channel 11. Below the water outlet 12. Of course, after the water inlet pipe 3 is provided with the guide tube 6 , the buoyancy control mechanism 2 is sleeved on the guide tube 6 .

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

In view of this, the bottom of the accommodation chamber of the valve seat is movably installed on the water outlet end of the water inlet pipe, as shown in Figure 17, Figure 18, Figure 19, and Figure 23, the bottom 14 of the accommodation chamber 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 locking teeth 35, the bottom 14 of the accommodating chamber 10 of the valve seat 1 forms a sleeve pipe 15, and the inner wall of the sleeve pipe 15 forms a locking groove 16, and the valve seat 1 passes through the locking groove. The teeth 35 are screwed into the slot 16 to be clamped on the water outlet end 31 of the water inlet pipe 3 . It can also be shown in Figure 20, Figure 21, Figure 22, and 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 forms an external thread 36, and the accommodation of the valve seat 1 The bottom 14 of the chamber 10 forms a sleeve pipe 15, the inner wall of the sleeve pipe 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 on the water outlet end 31 of the water inlet pipe 3. In this way, according to the height of the toilet water tank, the valve seat 1 of the socket pipe of different heights can be selected to match the toilet water tanks of different heights, and it is also convenient for the valve seat 1 and the back pressure water stop valve 4 and the needle valve pressure water stop valve 5 to be connected to each other from the inlet. The water pipe is convenient to assemble and disassemble. When the pressure water stop valve fails, replace the new back pressure pressure water stop valve 4 and the needle valve pressure water stop valve 5.

Above, through the embodiment of the bottom inlet type water inlet valve, a complete introduction has been made to the innovations of the present invention, such as water inlet pipe structure improvement, anti-siphon, valve seat can be replaced, among which there are innovative points about water inlet pipe structure improvement and anti-siphon effect. The water-inlet type water inlet valve is also applicable, and the side water-inlet type needle valve water inlet valve is listed below for illustration.

As shown in FIGS. 25-30 , a toilet water tank side water inlet valve includes a valve seat 8 , a pressure water stop valve, a buoyancy control mechanism 2 , and a water inlet pipe 9 . The head of the water outlet end 91 of the water inlet pipe 9 stops at the water surface 92 (as shown in Figure 29 and Figure 30 ), and the valve seat 8 forms an accommodating chamber 80, and the bottom 84 of the accommodating chamber 80 is arranged on 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 wall 94 of the water outlet end of the water inlet pipe 9. The accommodating cavity 80 is equipped with a needle valve pressure water stop valve 5, and a back pressure pressure water stop valve can also be installed optionally. The buoyancy control mechanism 2 controls the needle valve pressure water stop valve 5 or the back pressure water stop valve to realize the on-off of the water flow. Its buoyancy control mechanism 2, needle valve pressure water stop valve 5, back pressure pressure water stop valve structure and the principle of realizing drainage are exactly the same as the bottom water inlet type water inlet valve introduced above, and will not repeat them here.

As shown in Figure 27 and Figure 28, the water outlet 82 of the water outlet channel 81 is exposed on the outer surface 89 of the bottom of the accommodating cavity, which is higher than the highest water level line 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. In the same way, 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 will never fail.

As shown in Figure 27 and Figure 28 again, the water outlet 82 of the water outlet channel 81 is close to the outer wall 94 of the water outlet 91 of the water inlet pipe 9, and the water outlet channel 81 is provided with a slope 83 or an inclined channel, so that the water outlet 82 of the water outlet channel 81 faces The outer wall 94 of the water outlet end 91 of the water inlet pipe 9 makes the water from the water outlet channel 91 flow into the toilet tank along the outer wall 94 of the water inlet pipe 9 to prevent water from splashing. To better prevent water from splashing, the water inlet pipe 9 is covered with a guide tube 6 , and the upper end 61 of the guide tube 6 is funnel-shaped, and is connected below the water outlet 82 of the water outlet channel 81 . After the water inlet pipe 9 is sleeved with the guide tube 6 , the buoyancy control mechanism 2 is sleeved on the guide tube 6 .

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. a kind of anti-siphonic closet tank intake valve of water, including valve seat, pressure water check valve, buoyancy control mechanism, water inlet pipe, feature Be: forming accommodating cavity on valve seat, the bottom of accommodating cavity is arranged in the water outlet of water inlet pipe, the bottom of accommodating cavity be equipped with lead into The exhalant canal of the water outlet lateral wall of water pipe, the water outlet of the exhalant canal expose to accommodating cavity bottom outer surface, are higher than horse The maximum water level of bucket water tank setting, pressure water check valve are mounted in accommodating cavity, and buoyancy control mechanism makes inside pressure water check valve It forms hydraulic pressure or the on-off of water flow is realized in pressure release.

2. a kind of anti-siphonic closet tank intake valve of water as described in claim 1, it is characterised in that: the pressure water check valve packet Upper cover, rubber water-proof pad, inner core tube are included, inner core tube water outlet end face forms sealing face, and inner core tube water inlet end is plugged on water inlet pipe It is middle to form vertical intake tunnel, realize that sealing, the setting of rubber water-proof pad exist by setting sealing ring between inner core tube and water inlet pipe Rubber water-proof pad together with valve seal, is formed pressure chamber between upper cover and rubber water-proof pad by inner core tube water outlet, upper cover, Pressure chamber has inlet opening and relief hole respectively, and inlet opening is communicated with vertical intake tunnel, and buoyancy control mechanism controls relief hole is opened It opens or closes.

3. a kind of anti-siphonic closet tank intake valve of water as described in claim 1, it is characterised in that: the water outlet of the water inlet pipe The water surface until the head at end, the pressure water check valve include upper cover, waterstop pad, and waterstop pad is sealed in the accommodating of valve seat by upper cover Intracavitary, waterstop pad is located at the head sealing face of the water outlet of water inlet pipe, and pressure chamber, pressure chamber are formed between waterstop pad and upper cover There are inlet opening and relief hole respectively, inlet opening is communicated with water inlet pipe, and buoyancy control mechanism controls relief hole opens or closes.

4. a kind of anti-siphonic closet tank intake valve of water as claimed in claim 3, it is characterised in that: the pressure water check valve is Back-pressure water check valve, including upper cover, rubber water-proof pad, back pressure pad, the inlet opening are arranged on the guide post of upper cover, guide post It is perforated through rubber water-proof pad, the relief hole is arranged on upper lid, and the buoyancy control mechanism includes water tank, keg float, company Extension bar, swing rod correspond on swing rod and the back pressure pad are arranged at relief hole, and swing rod one end is hubbed on lid, the swing rod other end It is connect by connecting rod with keg float, keg float is placed in water tank, and water tank cover is on water inlet pipe.

5. a kind of anti-siphonic closet tank intake valve of water as claimed in claim 3, it is characterised in that: the pressure water check valve is Needle-valve pressure water check valve, including upper end cover, waterstop pad, stainless pin, the pressure release through-hole, which runs through, to be arranged on waterstop pad, institute The inlet through hole stated also is arranged on waterstop pad, and stainless pin passes through upper end cover and is inserted in pressure release through-hole, and stainless pin is equipped with Water-carrying groove, the buoyancy control mechanism include water tank, keg float, connecting rod, swing rod, are corresponded at relief hole on swing rod equipped with stainless Steel needle, swing rod one end are hubbed on upper end cover, and the swing rod other end is connect by connecting rod with keg float, and keg float is placed in water tank, water Housing-case is on water inlet pipe.

6. a kind of anti-siphonic closet tank intake valve of water as described in claim 1, it is characterised in that: the water outlet of the exhalant canal The water outlet lateral wall of the close water inlet pipe of mouth, the exhalant canal are equipped with inclined-plane or access ramp, make the water outlet court of exhalant canal To the water outlet lateral wall of water inlet pipe.

7. a kind of anti-siphonic closet tank intake valve of water as described in claim 1, it is characterised in that: the valve seat and water inlet pipe Water outlet it is integrally formed.

8. a kind of anti-siphonic closet tank intake valve of water as described in claim 1, it is characterised in that: the valve seat clamping or spiral shell It connects in the water outlet of water inlet pipe.

9. a kind of anti-siphonic closet tank intake valve of water as described in claim 1, it is characterised in that: the cistern water inlet Valve is bottom inlet type inlet valve or side inlet type inlet valve.

10. a kind of anti-siphonic closet tank intake valve of water as claimed in claim 9, it is characterised in that: covered on the water inlet pipe There is diversion pipe, the buoyancy control mechanism is nested on diversion pipe.