An overflow device for isolating air

Abstract

The present invention discloses an overflow device for isolating air, comprising an overflow base and a buoy arranged above the overflow base and movable up and down. A drainage channel that passes through from top to bottom is arranged inside the overflow base, and the buoy comprises a top plate arranged on the top of the overflow base, and the bottom of the top plate is sealed with the top of the drainage channel. A guide rod is vertically fixed at the bottom of the top plate, and a first limiting structure is fixed inside the drainage channel, and one end of the guide rod passes through the first limiting structure and extends downward. A second limiting structure that can interfere with the first limiting structure to limit the floating stroke of the buoy is fixed at the bottom of the guide rod. Under normal circumstances, the buoy seals the top of the drainage channel due to gravity, isolates the drainage port of the drainage valve from the outside air, and the outside air cannot enter the drainage port. The drainage port is almost in a full pipe water state, and the drainage speed is greatly increased through the siphon effect; when the water level overflows a certain height of the buoy, the buoy floats up and opens the drainage channel to achieve overflow.

Description

Technical Field

[0001] The invention relates to the field of bathrooms, and in particular to an overflow device 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 overflow device for isolating air, which can isolate external air from entering the drain port of the drain valve and thus 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 device for isolating air comprises an overflow base and a float arranged above the overflow base and movable up and down. A drainage channel extending up and down is arranged inside the overflow base, and the float comprises a top plate arranged on the top of the overflow base, and the bottom of the top plate is sealed with the top of the drainage channel. A guide rod is vertically fixed to the bottom of the top plate, and a first limiting structure is fixed inside the drainage channel, and one end of the guide rod passes through the first limiting structure and extends downward. A second limiting structure is fixed at the bottom of the guide rod, which can interfere with the first limiting structure to limit the floating stroke of the float.

[0006] Furthermore, the first limiting structure includes a guide sleeve and at least one support rod, one end of the guide rod passes through the guide sleeve and can move up and down along the guide sleeve, and both ends of the support rod are respectively fixed to the outer wall surface of the guide sleeve and the inner wall surface of the drainage channel.

[0007] Preferably, a plurality of guide ribs are provided on the outer wall of the guide rod along the length direction. The purpose of providing the plurality of guide ribs is to reduce the contact area between the outer wall of the guide rod and the inner wall of the guide sleeve, thereby reducing the friction and preventing the risk of the guide rod being stuck, so that the guide rod can move up and down more smoothly.

[0008] Furthermore, the second limiting structure is an annular buckle with a single-side opening, a circle of buckle grooves is provided on the lower side wall of the guide rod, and the annular buckle is detachably mounted in the buckle groove.

[0009] Furthermore, a guide pipe for connecting the water supply pipe and the drainage channel is fixedly provided on the side wall of the overflow base.

[0010] The guide pipe is bent upward inside the drainage channel 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 tilted downward. When the overflow device 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, and the water stored in the water storage bay can isolate the outside air from entering the overflow port.

[0011] Furthermore, in order to achieve better sealing, an annular groove is provided at the bottom of the top plate, an annular sealing rubber pad is fixedly installed in the annular groove, and the bottom of the annular sealing rubber pad is sealed with the top of the overflow base.

[0012] Furthermore, in order to achieve a better sealing effect, the buoy also includes a circle of annular plates fixedly arranged at the bottom of the top plate, and the annular plates are sleeved on the outer side of the upper part of the overflow base.

[0013] Furthermore, in order to improve the overflow effect, the guide rod extends downward beyond the bottom surface of the overflow base, and the movable stroke of the guide rod is greater than the height of the annular plate.

[0014] The present invention has the following beneficial effects:

[0015] 1. Under normal circumstances, the buoy cooperates with the top seal of the overflow base due to gravity, isolating the drain outlet of the drain valve from the outside air, and the outside air cannot enter the drain outlet. 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 buoy, the buoy floats up and opens the drainage channel to achieve overflow.

[0016] 2. By setting a guide pipe, a water storage branch pipe and a detachable water supply elbow joint on the side of the overflow base, when the overflow device 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. The water supply elbow joint can have different inner diameter specifications, which can 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.

[0017] 3. The water outlet of the water supply elbow joint is tilted downward to prevent the float from being washed away when the 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] 4. Arranging a number of guide ribs on the outer wall of the guide rod can reduce the contact area between the outer wall of the guide rod and the inner wall of the guide sleeve, thereby reducing the friction and preventing the risk of the guide rod being stuck, making the up and down movement of the guide rod smoother.

[0019] 5. The overflow device of the present invention can be installed in the overflow pipe of the drain valve to achieve the functions of isolating air and overflowing, or it can be installed separately at the bottom of the water tank to achieve the functions of overflowing and replenishing water. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the overflow device of Example 1.

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

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

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the overflow base.

[0024] Figure 5 The working principle diagram of the overflow device of the first embodiment, wherein Figure 5 a is a schematic diagram of the buoy closed. Figure 5 b is a schematic diagram when the buoy is opened.

[0025] Figure 6 Schematic diagram of the overflow device of Example 1 when installed on the overflow pipe of the drain valve Figure 1 .

[0026] Figure 7 Schematic diagram of the overflow device of Example 1 when installed on the overflow pipe of the drain valve Figure 2 .

[0027] Figure 8 Schematic diagram of the overflow device of Example 1 when it is installed alone at the bottom of the water tank Figure 1 .

[0028] Fig. 9 The overflow device of Example 1 is used when it is installed alone at the bottom of the water tank. Figure 2 .

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the overflow device of the second embodiment.

[0030] Fig.11 for Fig.10 Exploded view of parts.

[0031] Fig.12 Schematic diagram of the internal structure of the overflow device of Example 2.

[0032] Explanation of the main component symbols: 1. Overflow base; 10. Drainage channel; 101. Guide sleeve; 102. Support rod; 103. Guide pipe; 104. Water storage branch pipe; 105. Water supply elbow joint; 2. Float; 201. Guide rod; 202. Guide rib; 203. Ring buckle; 204. Buckle groove; 21. Top plate; 210. Ring groove; 22. Ring plate; 3. Ring sealing gasket; 4. Water inlet valve; 40. Water supply pipe; 5. Drain valve; 50. Overflow pipe; 6. Water tank. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Embodiment 1

[0035] like Figure 1-4 As shown, an overflow device for isolating air includes an overflow base 1 and a buoy 2 disposed above the overflow base 1 and movable up and down, and a drainage channel 10 penetrating up and down is disposed inside the overflow base 1. The buoy 2 includes a top plate 21 disposed on the top of the overflow base 1 and a ring plate 22 fixedly disposed at the bottom of the top plate 21. An annular groove 210 is provided at the bottom of the top plate 21, and an annular sealing rubber pad 3 is fixedly installed in the annular groove 210. The bottom of the annular sealing rubber pad 3 is sealed with the top of the overflow base 1, and the annular plate 22 is sleeved on the upper outer side of the overflow base 1.

[0036] A guide rod 201 is vertically fixed to the bottom of the top plate 21, and a first limiting structure is fixed inside the drainage channel 10. One end of the guide rod 201 passes through the first limiting structure and extends downward. A second limiting structure that can interfere with the first limiting structure to limit the floating stroke of the buoy 2 is fixed to the bottom of the guide rod 201. An annular groove is provided at the bottom of the top plate, and an annular sealing rubber pad is fixedly installed in the annular groove. The bottom of the annular sealing rubber pad is sealed with the top of the overflow base.

[0037] The first limiting structure includes a guide sleeve 101 and a plurality of support rods 102. One end of the guide rod 201 passes through the guide sleeve 101 and can move up and down along the guide sleeve 101. The guide rod 201 goes downward beyond the bottom surface of the overflow base 1, and the movable stroke of the guide rod 201 is greater than the height of the annular plate 22. The plurality of support rods 102 are evenly arranged along the circumference of the outer wall of the guide sleeve 101, and the two ends of the support rods 102 are fixedly connected to the outer wall surface of the guide sleeve 101 and the inner wall surface of the drainage channel 10, respectively.

[0038] Preferably, a plurality of guide ribs 202 are provided on the outer wall surface of the guide rod 201 along the length direction.

[0039] The second limiting structure is an annular buckle 203 with a single-side opening. A circle of buckle grooves 204 are provided on the lower side wall of the guide rod 201 , and the annular buckle 203 is detachably buckled and installed in the buckle groove 204 .

[0040] A guide pipe 103 for connecting the water supply pipe 30 and the drainage channel 10 is fixedly provided on the side wall of the overflow base 1. The guide pipe 103 is bent upward inside the drainage channel 10 to form a water storage branch pipe 104, and a water supply elbow joint 105 is detachably installed on the top of the water storage branch pipe 104, and the water outlet of the water supply elbow joint 105 is tilted downward. When the overflow device is replenished with water, a water storage bay is formed between the water supply elbow joint 105, the water storage branch pipe 104, the guide pipe 103 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.

[0041] like Figure 5 The figure shows the working principle of the overflow device of this embodiment. Under normal circumstances, due to the gravity of the buoy 2, the guide rod 201 and the annular sealing rubber pad 3, the annular sealing rubber pad 3 and the top of the overflow base 1 are in a sealed state, isolating the drain outlet of the drain valve from the outside air. At the same time, due to the gravity of the buoy 2, the guide rod 201 and the annular sealing rubber pad 3, the buoy 2 is in a closed state, as shown in FIG. Figure 5 a. When the water level rises and overflows the buoy 2 to a certain height, the buoy 2 begins to float, the annular sealing pad 3 separates from the sealing surface of the overflow base 1, and the water flows into the overflow port to achieve overflow. Figure 5 b.

[0042] like Figure 6 , Figure 7 The figure shows a schematic diagram of the overflow device 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.

[0043] like Figure 8 , Fig. 9The figure shows a schematic diagram of the overflow device 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.

[0044] Embodiment 2

[0045] like Figure 10-12 As shown, the difference between this embodiment and the first embodiment is that the side of the overflow base 1 is not provided with a guide pipe 103, and the drainage channel 10 is not provided with a water storage branch pipe 104 and a water supply elbow joint 105. The rest of the structure and principle of this embodiment are the same as those of the first embodiment.

[0046] 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 overflow device for isolating air, characterized in that: It comprises an overflow base and a buoy arranged above the overflow base and movable up and down, wherein a drainage channel penetrating up and down is arranged inside the overflow base, and the buoy comprises a top plate arranged on the top of the overflow base, the bottom of the top plate is sealed with the top of the drainage channel, a guide rod is vertically fixed on the bottom of the top plate, a first limiting structure is fixed inside the drainage channel, one end of the guide rod passes through the first limiting structure and extends downward, and a second limiting structure which can interfere with the first limiting structure to limit the floating stroke of the buoy is fixed on the bottom of the guide rod; The first limiting structure comprises a guide sleeve and at least one support rod, one end of the guide rod passes through the guide sleeve and can move up and down along the guide sleeve, and the two ends of the support rod are respectively fixed to the outer wall surface of the guide sleeve and the inner wall surface of the drainage channel; the second limiting structure is an annular buckle with a single-side opening, a circle of buckle grooves is provided on the lower side wall of the guide rod, and the annular buckle is detachably buckled and installed in the buckle groove; A guide pipe for connecting the water supply pipe and the drainage channel is fixedly provided on the side wall of the overflow base. The guide pipe is bent upward inside the drainage channel to form a water storage branch pipe. 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 tilted downward.

2. An air-isolating overflow device as claimed in claim 1, characterized in that: A plurality of guide ribs are arranged on the outer wall surface of the guide rod along the length direction.

3. An air-isolating overflow device as claimed in claim 1, characterized in that: An annular groove is provided at the bottom of the top plate, an annular sealing rubber pad is fixedly installed in the annular groove, and the bottom of the annular sealing rubber pad is sealed and matched with the top of the overflow base.

4. An overflow device for isolating air according to claim 1, characterized in that: The buoy also includes a circle of annular plates fixedly arranged at the bottom of the top plate, and the annular plates are sleeved on the outer side of the upper part of the overflow base.

5. An air-isolating overflow device as claimed in claim 4, characterized in that: The guide rod extends downward beyond the bottom surface of the overflow base, and the movable stroke of the guide rod is greater than the height of the annular plate.

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