A relief valve isolating air

Abstract

The present invention discloses an overflow valve for isolating air, comprising an overflow body, a float and a seal. A cavity is provided inside the overflow body, and a water inlet pipe and a drain pipe connected to the cavity are provided at the top and bottom of the overflow body respectively. The float is arranged above the overflow body and a guide column is fixed at the bottom. A guide sleeve for radially limiting the guide column is fixed inside the overflow body, and one end of the guide column passes through the guide sleeve and extends into the cavity. The seal is fixed at the bottom of the guide column, and the bottom of the seal is sealed with the top of the drain pipe. Under normal circumstances, the seal is sealed with the top of the drain pipe due to the gravity of the float, isolating the drain port of the drain valve from the outside air, and the outside air cannot enter the drain port from the water inlet pipe. The drain port is almost in a full pipe water state, and the drainage speed is greatly improved through the siphon effect; when the water level overflows a certain height of the float, the float floats up, and the seal is separated from the sealing surface of the drain pipe to achieve overflow.

Description

Technical Field

[0001] The invention relates to the field of sanitary ware, and in particular to an overflow valve for isolating air. Background Art

[0002] In the prior art, the overflow pipe on the side of the toilet drain valve is connected to the drain port at the bottom of the drain valve. In the normal water-stopping state, the outside air is connected to the drain port of the drain valve base through the overflow pipe. When overflow occurs, water flows from the overflow pipe to the drain port of the drain valve base and enters the toilet pipe. When the drain valve is opened, water flows out through the drain port of the drain valve base. During normal use, since the drain port of the drain valve base is connected to the outside air through the overflow pipe channel, negative pressure will be generated in the drain channel when draining. Under the action of the outside atmospheric pressure, air will be mixed into the drain port of the drain valve base, so that the drain channel is not in a full pipe water state, thereby reducing the drainage speed. Summary of the invention

[0003] In view of the above problems, an object of the present invention is to provide an air-isolating overflow valve, which can isolate the drain outlet of the drain valve from the outside air to speed up the drainage speed of the drain valve.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] An overflow valve for isolating air comprises an overflow body, a float and a seal. A cavity is provided inside the overflow body, and an inlet pipe and a drain pipe connected to the cavity are fixedly provided at the top and bottom of the overflow body respectively. The float is arranged above the overflow body and a guide column is fixedly provided at the bottom. A guide sleeve for radially limiting the guide column is fixedly provided inside the overflow body, and one end of the guide column passes through the guide sleeve and extends into the cavity. The seal is fixed at the bottom of the guide column, and the bottom of the seal is sealed with the top of the drain pipe.

[0006] Furthermore, it also includes a sealing joint, which includes a base plate, a connecting portion fixed on the top of the base plate and used to connect with the guide column, and a mounting portion fixed on the bottom of the base plate and used to fix and install the sealing member.

[0007] Preferably, the sealing member is a sealing rubber pad.

[0008] Preferably, in order to achieve a better sealing effect, the top of the drain pipe extends upward to form a circle of annular protrusions, and the bottom of the sealing rubber pad is sealed in cooperation with the annular protrusions.

[0009] Furthermore, in order to achieve the water replenishment function, a guide pipe for connecting the water replenishment pipe and the inside of the drain pipe is fixedly provided on the side wall of the drain pipe.

[0010] Among them, the guide pipe is bent upward inside the drain pipe to form a water storage branch pipe, and a water replenishment elbow joint is detachably installed on the top of the water storage branch pipe, and the water outlet of the water replenishment elbow joint is tilted downward. When the overflow valve replenishes water, a water storage bay is formed between the water replenishment elbow joint, the water storage branch pipe, the guide pipe and the water replenishment pipe. The stored water in the water storage bay can isolate the outside air from entering the overflow port. At the same time, the water replenishment elbow joint can have different inner diameter specifications to achieve different water replenishment rates. The water replenishment elbow joint with a suitable inner diameter can be selected according to the amount of water replenishment in the toilet. The water outlet of the water replenishment elbow joint is tilted downward to prevent the float from being washed away when the replenishment water flow is too large, thereby causing the seal to fail. At the same time, the existence of the water replenishment elbow joint can make the water storage effect of the water storage bay better.

[0011] Furthermore, the top of the buoy is open, and the bottom extends downward to form a ring-shaped isolation plate for sleeved on the outer side of the top of the water inlet pipe. The annular isolation plate can increase the buoyancy of the buoy, speed up the floating speed of the buoy, and improve the overflow capacity.

[0012] Furthermore, the guide sleeve is fixed inside the overflow body through a plurality of support rods, one end of the support rod is fixedly connected to the outer wall of the guide sleeve, and the other end is fixed to the inner wall of the water inlet pipe.

[0013] Furthermore, in order to further enhance the strength of the guide column and improve the guiding effect, a plurality of guiding ribs are provided on the outer wall surface of the guide column along the length direction.

[0014] Furthermore, in order to achieve better disassembly and assembly and make the production process of each component simpler, the overflow body includes an overflow base and an overflow cover snapped onto the overflow base, the drain pipe and the overflow base are an integrally formed structure, and the water inlet pipe and the overflow cover are an integrally formed structure.

[0015] The present invention has the following beneficial effects:

[0016] 1. Under normal circumstances, the seal cooperates with the top seal of the drain pipe due to the gravity of the float, isolating the drain outlet of the drain valve from the outside air, and the outside air cannot enter the drain outlet from the water inlet pipe. The drain outlet is almost full of water, and the drainage speed is greatly increased through the siphon effect. When the water level exceeds a certain height of the float, the float floats up, and the seal separates from the sealing surface of the drain pipe to achieve overflow.

[0017] 2. By setting a guide pipe, a water storage branch pipe and a detachable water supply elbow joint at the drain pipe, when the overflow valve is replenished with water, a water storage bay is formed between the water supply elbow joint, the water storage branch pipe, the guide pipe and the water supply pipe. The water stored in the water storage bay can isolate the outside air from entering the overflow port, thereby preventing the air from running into the drain port of the drain valve and causing the drainage speed to decrease. At the same time, the water supply elbow joint can have different inner diameter specifications to achieve different water replenishment rates. The water supply elbow joint with a suitable inner diameter can be selected according to the amount of water replenishment in the toilet. The outlet of the water supply elbow joint is tilted downward to prevent the seal from being flushed open when the replenishment water flow is too large, thereby causing the seal to fail. At the same time, the existence of the water supply elbow joint can make the water storage effect of the water storage bay better.

[0018] 3. Arranging a number of guide ribs on the outer wall of the guide column can reduce the contact area between the outer wall of the guide column and the inner wall of the guide sleeve, thereby reducing the friction and preventing the risk of the guide column being stuck, making the up and down movement of the guide column smoother.

[0019] 4. The overflow valve of the present invention can be installed in the overflow pipe of the drain valve to achieve the functions of isolating air and overflow, or it can be installed separately at the bottom of the water tank to achieve overflow and water replenishment functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the overflow valve of the first embodiment.

[0021] Figure 2 for Figure 1 Exploded view of parts.

[0022] Figure 3 Schematic diagram of the internal structure of the overflow valve of Example 1.

[0023] Figure 4 It is a schematic diagram of the coordination between the float and the water inlet pipe of the overflow valve of the first embodiment.

[0024] Figure 5 A top view of the overflow cover.

[0025] Figure 6 It is a schematic diagram of the structure of the sealing joint.

[0026] Figure 7 The working principle diagram of the overflow valve of the first embodiment, wherein Figure 7 a is a schematic diagram of the buoy closed. Figure 7 b is a schematic diagram when the buoy is opened.

[0027] Figure 8 Schematic diagram of the overflow valve of Example 1 when installed on the overflow pipe of the drain valve Figure 1 .

[0028] Fig. 9 Schematic diagram of the overflow valve of Example 1 when installed on the overflow pipe of the drain valve Figure 2 .

[0029] Fig.10 The overflow valve of Example 1 is used when it is installed alone at the bottom of the water tank. Figure 1 .

[0030] Fig.11 The overflow valve of Example 1 is used when it is installed alone at the bottom of the water tank. Figure 2 .

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the overflow valve of the second embodiment.

[0032] Fig.13 for Fig.11 Exploded view of parts.

[0033] Fig.14 Schematic diagram of the internal structure of the overflow valve of Example 2.

[0034] Explanation of the main component symbols: 1. Overflow body; 10. Cavity; 101. Water inlet pipe; 102. Drain pipe; 103. Guide sleeve; 104. Support rod; 105. Annular protrusion; 106. Diversion pipe; 107. Water storage branch pipe; 108. Water supply elbow joint; 11. Overflow base; 12. Overflow cover; 2. Float; 20. Annular isolation plate; 200. Horizontal partition; 21. Guide column; 210. Guide rib; 22. Sealing joint; 221. Bottom plate; 222. Connection part; 223. Installation part; 3. Seal; 4. Water inlet valve; 40. Water supply pipe; 5. Drain valve; 50. Overflow pipe; 6. Water tank. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Embodiment 1

[0037] like Figure 1-6 As shown, an overflow valve isolating air, comprising an overflow body 1, a float 2 and a seal 3. A cavity 10 is provided inside the overflow body 1, and a water inlet pipe 101 and a drain pipe 102 connected to the cavity 10 are respectively fixed on the top and bottom of the overflow body 1. Preferably, the overflow body 1 comprises an overflow base 11 and an overflow upper cover 12 buckled on the overflow base 11, the drain pipe 102 and the overflow base 11 are an integrally formed structure, and the water inlet pipe 101 and the overflow upper cover 12 are an integrally formed structure.

[0038] The buoy 2 is disposed above the overflow body 1 , the top of the buoy 2 is open, and the bottom extends downward to form a ring-shaped isolation plate 20 for sleeved on the outer side of the top of the water inlet pipe 101 .

[0039] A guide column 21 is fixedly provided at the bottom of the buoy 2. Preferably, a plurality of guide ribs 210 are provided on the outer wall surface of the guide column 21 along the length direction. A guide sleeve 103 for radially limiting the guide column 21 is fixedly provided inside the overflow body 1. The guide sleeve 103 is fixed inside the overflow body 1 through a plurality of support rods 104. One end of the support rod 104 is fixedly connected to the outer wall of the guide sleeve 103, and the other end is fixed to the inner wall of the water inlet pipe 101.

[0040] One end of the guide post 21 passes through the guide sleeve 103 and extends into the cavity 10, and the guide post 21 can move up and down. A sealing joint 22 is detachably mounted on the bottom of the guide post 21 through a threaded connection. The sealing joint 22 includes a bottom plate 221, a connecting portion 222 fixedly arranged on the top of the bottom plate 221 and used to connect with the guide post 21, and a mounting portion 223 fixedly arranged on the bottom of the bottom plate 221 and used to fix and install the sealing member 3. The sealing member 3 is fixed on the mounting portion 223, and the bottom of the sealing member 3 is sealed with the top of the drain pipe 102. The sealing member 3 preferably adopts a sealing rubber pad.

[0041] Preferably, the top of the drain pipe 102 extends upward to form a circle of annular protrusions 105, and the bottom of the seal 3 is sealed with the annular protrusions 105. There is a gap H between the lower surface of the horizontal partition 200 inside the buoy 2 and the upper end surface of the water inlet pipe 101 to prevent the seal 3 from failing to fit tightly with the annular protrusions 105.

[0042] A flow guide pipe 106 for connecting the water supply pipe 40 and the inside of the drain pipe 102 is fixedly provided on the side wall of the drain pipe 102. The flow guide pipe 106 is bent upward inside the drain pipe 102 to form a water storage branch pipe 107, and a water supply elbow joint 108 is detachably installed on the top of the water storage branch pipe 107, and the water outlet of the water supply elbow joint 108 is tilted downward. When the overflow valve replenishes water, a water storage bay is formed between the water supply elbow joint 108, the water storage branch pipe 107, the flow guide pipe 106 and the water supply pipe 40, and the water stored in the water storage bay can isolate the outside air from entering the overflow port.

[0043] like Figure 7 The diagram shows the working principle of the overflow valve of this embodiment. Under normal circumstances, due to the gravity of the buoy 2 and the sealing joint 22, the seal 3 at the bottom of the sealing joint 22 and the annular protrusion 105 at the top of the drain pipe 102 are in a sealed state, isolating the drain port of the drain valve from the outside air. At the same time, due to the gravity of the buoy 2 and the sealing joint 22, the buoy 2 is in a closed state, as shown in FIG. Figure 7a. When the water level rises and overflows the buoy 2 to a certain height, the buoy 2 begins to float, the seal 3 separates from the sealing surface of the annular protrusion 105, and the water flows into the overflow port to achieve overflow, such as Figure 7 b.

[0044] like Figure 8 , Fig. 9 The figure shows a schematic diagram of the overflow valve of this embodiment when it is installed on the overflow pipe 50 of the drain valve 5. In the initial state, the float 2 is in a closed state due to gravity. When the water inlet valve 4 is working, there are two streams of water, one is injected into the water tank 6, and the other is injected into the overflow pipe 50 through the water supply pipe 40, and enters the toilet pipe through the valve base drain port to realize the "water supply" function. When the water inlet valve 4 does not stop water and continues to take in water, the water tank 6 will overflow. When the water level of the water tank 6 rises and overflows the float 2 to a certain height, the float 2 begins to float, and the water flows from the overflow port into the overflow pipe 50, and the water flows to the toilet pipe through the valve base drain port to realize overflow.

[0045] like Fig.10 , Fig.11 The figure shows a schematic diagram of the overflow valve of this embodiment when it is installed alone at the bottom of the water tank 6. The overflow channel is no longer set on the side wall of the drain outlet of the drain valve base. In the initial state, the float 2 is in a closed state due to gravity. When the water inlet valve 4 is working, there are two streams of water, one is injected into the water tank 6, and the other is injected into the overflow pipe 50 through the water supply pipe 40, and enters the toilet pipe through the drain outlet of the valve base to realize the "water supply" function. When the water inlet valve 4 does not stop water and continues to take in water, the water tank 6 will overflow. When the water level of the water tank 6 rises and overflows the float 2 to a certain height, the float 2 begins to float, and the water flows from the overflow port into the overflow pipe 50, and the water flows to the toilet pipe through the overflow pipe 50 to realize overflow.

[0046] Embodiment 2

[0047] like Figure 12-14 As shown, the difference between this embodiment and the first embodiment is that the side wall of the drainage pipe 102 is not provided with the flow guide pipe 106, and the drainage pipe 102 is not provided with the water storage branch pipe 107 and the water supply elbow joint 108. The rest of the structure and principle of this embodiment are the same as those of the first embodiment.

[0048] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. An air-isolating overflow valve, characterized in that: The overflow body comprises an overflow body, a float and a sealing member, wherein a cavity is provided inside the overflow body, and a water inlet pipe and a water discharge pipe connected to the cavity are respectively fixedly provided at the top and bottom of the overflow body, the float is arranged above the overflow body and a guide column is fixedly provided at the bottom, a guide sleeve for radially limiting the guide column is fixedly provided inside the overflow body, the guide sleeve is fixed inside the overflow body through a plurality of support rods, one end of the support rod is fixedly connected to the outer wall of the guide sleeve, and the other end is fixed to the inner wall of the water inlet pipe; one end of the guide column passes through the guide sleeve and extends into the cavity, the sealing member is fixed at the bottom of the guide column, and the bottom of the sealing member is sealed and matched with the top of the water discharge pipe; A guide pipe for connecting the water supply pipe and the inside of the drain pipe is fixedly provided on the side wall of the drain pipe; the guide pipe is bent upward inside the drain pipe to form a water storage branch pipe, and a water supply elbow joint is detachably installed on the top of the water storage branch pipe, and the water outlet of the water supply elbow joint is arranged to be inclined downward.

2. An air-isolating overflow valve as claimed in claim 1, characterized in that: It also includes a sealing joint, which includes a base plate, a connecting portion fixed on the top of the base plate and used to connect with the guide column, and a mounting portion fixed on the bottom of the base plate and used to fix and install the sealing member.

3. An air-isolating overflow valve as claimed in claim 2, characterized in that: The sealing element is a sealing rubber pad.

4. An air-isolating overflow valve as claimed in claim 3, characterized in that: The top of the drain pipe extends upward to form a circle of annular protrusions, and the bottom of the sealing rubber pad is sealed and matched with the annular protrusions.

5. The air-isolating overflow valve according to claim 1, characterized in that: The top of the buoy is open, and the bottom extends downward to form a ring-shaped isolation plate for sleeved on the outer side of the top of the water inlet pipe.

6. An air-isolating overflow valve according to claim 1, characterized in that: A plurality of guide ribs are arranged on the outer wall surface of the guide post along the length direction.

7. An air-isolating overflow valve as claimed in claim 1, characterized in that: The overflow body comprises an overflow base and an overflow cover buckled on the overflow base, the drain pipe and the overflow base are an integrally formed structure, and the water inlet pipe and the overflow cover are an integrally formed structure.

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