An overflow device for improving overflow capacity and accelerating drain valve discharge speed

Abstract

The present invention discloses an overflow device for improving overflow capacity and accelerating the drainage speed of a drain valve, comprising a housing and a check valve, wherein a cavity is provided inside the housing, and a water inlet pipe and a drain pipe connected to the cavity are fixedly connected to the top and bottom of the housing respectively. The check valve comprises a valve stem, a valve sleeve, an elastic body, a support plate and an annular water baffle plate, wherein the valve sleeve is fixed at the lower part of the cavity, the bottom of the valve stem is installed in the valve sleeve and can move up and down, the support plate is fixed at the top of the valve stem, and the elastic body sleeve is arranged on the outer side of the valve stem and abuts against the support plate. The annular water baffle plate is fixed at the top of the support plate, and an overflow port is provided at the top of the annular water baffle plate, and a water seal area is formed between the annular water baffle plate and the support plate, the bottom end of the water inlet pipe extends into the water seal area, and the bottom surface of the water inlet pipe is sealed and fitted with the upper surface of the support plate. The overflow device of the present invention can be installed separately to realize the overflow function, and can also be installed on the drain valve, so that the outside air cannot enter the drain port of the drain valve, thereby improving the drainage speed of the drain valve.

Description

Technical Field

[0001] The invention relates to the field of sanitary ware, and in particular to an overflow device capable of improving overflow capacity and accelerating the discharge speed of a drain valve. Background Art

[0002] The existing drain valve is composed of a valve body, a base, and an overflow pipe. Among them, the valve base is connected to the overflow pipe. Under 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. At the same time, the water inlet of the existing overflow pipe is generally arranged at the top. When overflow occurs, a vortex is easily formed at the water inlet at the top, and the vortex brings a large amount of air into the overflow pipe, which not only causes the overflow speed to decrease, but also makes a lot of noise, which has a very bad impact on the surrounding environment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an overflow device capable of improving the overflow capacity and accelerating the discharge speed of a 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 improving overflow capacity and accelerating the discharge speed of a drain valve comprises a shell and a check valve arranged inside the shell. A cavity is arranged inside the shell, and a water inlet pipe and a drain pipe connected to the cavity are fixedly connected to the top and bottom of the shell respectively. The check valve comprises a valve stem, a valve sleeve, an elastic body, a support plate and an annular water baffle plate. The valve sleeve is fixed at the bottom of the cavity, and the bottom of the valve stem is installed in the valve sleeve and can move up and down. The support plate is fixed to the top of the valve stem, and the elastic body is sleeved on the outside of the valve stem and presses upward against the support plate. The annular water baffle plate is fixed on the top of the support plate, and an overflow port is arranged on the top of the annular water baffle plate. A water seal area is formed between the annular water baffle plate and the support plate, and the bottom end of the water inlet pipe extends into the water seal area, and the bottom surface of the water inlet pipe is sealed and fitted with the upper surface of the support plate.

[0006] Furthermore, the water inlet pipe corresponds to the drain pipe in upper and lower positions, the shell is fixed with a plurality of support rods extending toward the axial direction of the drain pipe at the connection between the cavity and the drain pipe, and the valve sleeve is fixed on the support rods.

[0007] Furthermore, the elastic body is a metal spring or a rubber spring.

[0008] Furthermore, the shell includes an upper cover and a lower cover which are plugged into each other, the water inlet pipe is fixed on the upper cover, and the drain pipe is fixed on the lower cover.

[0009] Furthermore, it also includes an overflow cap, which is fixedly mounted on the top of the water inlet pipe. The overflow cap includes a main body, an overflow pipe is provided inside the main body and runs vertically, a water retaining portion is fixed on the upper end of the inner wall of the overflow pipe to block the water inlet end of the overflow pipe, and a water inlet hole is provided on the side wall of the main body and communicates with the drainage end of the overflow pipe.

[0010] The bottom of the water retaining portion extends downward to form a guide portion, and the outer wall surface of the guide portion is provided with a guide arc surface at a position opposite to the water inlet hole.

[0011] Preferably, there are a plurality of water inlet holes, and the plurality of water inlet holes are evenly distributed along the circumference of the side wall of the main body.

[0012] Furthermore, a water supply pipe for inserting a water supply pipe is provided in the water retaining part, and the water supply pipe passes through the water retaining part and the flow guide part from top to bottom.

[0013] The present invention has the following beneficial effects: providing an overflow device for improving overflow capacity and accelerating the drainage speed of a drain valve, when the overflow device is installed and used alone, under normal circumstances, the check valve is in a closed state, the bottom end of the water inlet pipe is in a water seal area, and the water in the water seal area plays a role in isolating the air. When the water pressure on the check valve is greater than the elastic force of the elastic body, the check valve opens to realize the overflow function. When the overflow device is installed on the drain valve, the check valve is in a closed state due to the elastic force of the elastic body, when the drain valve is draining, the outside air cannot enter the drain port of the drain valve from the water inlet pipe, the drain port of the drain valve is almost in a full pipe water state, and the drainage speed of the drain valve is greatly increased through the siphon effect when the drain valve is draining; when overflow occurs, the side wall opening of the overflow cap and the structural characteristics of the guide part work to prevent the formation of vortex above the water inlet pipe port, effectively reduce the noise emitted by water replenishment, and the flow of water tends to be stable, and has a higher water flow speed, thereby improving the overflow capacity of the overflow device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0015] Figure 2 It is an exploded view of the parts of the present invention.

[0016] Figure 3 It is a working principle diagram of the present invention, wherein Figure 3(a) Schematic diagram of the principle of the check valve when it is closed. Figure 3 (b) Schematic diagram of the principle of overflow when the check valve is opened. Figure 3 (c) Schematic diagram of the principle when the check valve is open and the bottom surface of the water inlet pipe is separated from the liquid surface of the water seal area.

[0017] Figure 4 This is an illustration of the overflow device installed on the drain valve. Figure 1 .

[0018] Figure 5 This is an illustration of the overflow device installed on the drain valve. Figure 2 .

[0019] Figure 6 Illustration of the usage status when the overflow device is installed separately Figure 1 .

[0020] Figure 7 Illustration of the usage status when the overflow device is installed separately Figure 2 .

[0021] Explanation of the main component symbols: 1. Shell; 10. Cavity; 101. Upper cover; 102. Lower cover; 2. Check valve; 200. Water seal area; 21. Valve stem; 22. Valve sleeve; 23. Elastomer; 24. Support plate; 25. Annular water baffle; 250. Overflow port; 26. Support rod; 3. Overflow cap; 31. Main body; 310. Overflow pipe; 311. Water inlet hole; 32. Water baffle; 320. Water supply pipe; 33. Guide part; 330. Guide arc surface; 4. Drain valve; 5. Water inlet valve; 50. Water supply pipe; 6. Toilet water tank. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-3 As shown, an overflow device for improving overflow capacity and accelerating the drain valve discharge speed includes a housing 1, a check valve 2 and an overflow cap 3. A cavity 10 is provided inside the housing 1, and the check valve 2 is provided in the cavity 10. The top and bottom of the housing 1 are respectively fixedly connected with an inlet pipe 11 and a drain pipe 12 connected to the cavity 10, and the inlet pipe 11 and the drain pipe 12 are in corresponding upper and lower positions. The housing 1 includes an upper cover 101 and a lower cover 102 which are plugged into each other, the inlet pipe 11 and the upper cover 101 are an integrally formed structure, and the drain pipe 12 and the lower cover 102 are an integrally formed structure.

[0024] The check valve 2 includes a valve stem 21, a valve sleeve 22, an elastic body 23, a support plate 24 and an annular water baffle 25. The housing 1 is fixed with a plurality of support rods 26 extending toward the axial direction of the drain pipe 12 at the connection between the cavity 10 and the drain pipe 12, and the valve sleeve 22 is fixed on the support rods 26. The bottom of the valve stem 21 is installed in the valve sleeve 22 and can move up and down. The support plate 24 is fixed on the top of the valve stem 21, and the elastic body 23 is sleeved on the outside of the valve stem 21 and presses upward against the support plate 24. The elastic body 23 is a metal spring or a rubber spring. The annular water baffle 25 is fixed on the top of the support plate 24, and an overflow port 250 is provided on the top of the annular water baffle 25. A water seal area 200 is formed between the annular water baffle 25 and the support plate 24. The bottom end of the water inlet pipe 11 extends into the water seal area 200, and the bottom surface of the water inlet pipe 11 is sealed and fitted with the upper surface of the support plate 24.

[0025] The overflow cap 3 is fixedly mounted on the top of the water inlet pipe 11. The overflow cap 3 includes a main body 31, and an overflow pipe 310 is provided inside the main body 31, which runs through from top to bottom. A water retaining portion 32 for blocking the water inlet end of the overflow pipe 310 is fixedly provided on the upper end of the inner wall of the overflow pipe 310. A plurality of water inlet holes 311 connected to the drainage end of the overflow pipe 310 are provided on the side wall of the main body 31, and the plurality of water inlet holes 311 are evenly arranged along the circumference of the side wall of the main body 31. The bottom of the water retaining portion 32 extends downward to form a guide portion 33, and a guide arc surface 330 is provided on the outer wall surface of the guide portion 33 at a position opposite to the water inlet hole 311. A water replenishing pipe 320 for inserting the water replenishing pipe 50 is provided in the water retaining portion 32, and the water replenishing pipe 320 runs through the water retaining portion 32 and the guide portion 33 from top to bottom.

[0026] like Figure 4 The figure shows a schematic diagram of one of the usage states when the overflow device is installed on the drain valve 4. The overflow device is installed on the base of the drain valve 4, and the overflow outlet is arranged on the side wall of the drain outlet of the valve base. In the initial state, the overflow device is in a closed state due to the action of the elastic force F1, and no water is injected into the overflow device. When the water inlet valve 5 is working, there are two streams of water, one of which is injected into the toilet water tank 6, and the other is injected into the overflow device through the water supply pipe 50. When the gravity F2 of the flowing water is greater than the elastic force F2 of the elastic body 23, the check valve 2 opens, and the excess water enters the toilet pipe through the drain outlet of the valve base to realize the "water supply" function.

[0027] like Figure 5The figure shows another schematic diagram of the use state when the overflow device is installed on the drain valve 4. The overflow device is installed on the base of the drain valve 4, and the overflow outlet is arranged on the side wall of the drain outlet of the valve base. When the toilet water tank 6 is normally filled with water, the working water level is lower than the overflow water level, and the check valve 2 is in a closed state due to the elastic force F1 (the elastic force F1 is greater than the gravity of the water body). The bottom end of the water inlet pipe 11 is in the water seal area 200, and the water in the water seal area 200 plays a role in isolating the air, that is, the drain outlet of the valve base cannot be connected to the outside air through the overflow device. Therefore, the drain outlet of the drain valve 4 base is almost in a full pipe water state, thereby increasing the drainage flow rate. When the water inlet valve 6 does not stop water and continues to inlet water, the toilet water tank 6 will overflow, and water will flow into the water inlet pipe 11 from the overflow outlet. When the gravity F4 of the water is greater than the elastic force F5, the check valve 2 opens, and the bottom surface of the water inlet pipe 11 is separated from the liquid surface of the water seal area 200, and the water flows to the toilet pipe through the drain outlet of the valve base to achieve overflow.

[0028] like Figure 6 The figure shows a schematic diagram of one of the use states when the overflow system is independently installed on the toilet water tank 6. The overflow outlet is arranged at the bottom of the toilet water tank 6. In the initial state, it is in a closed state due to the elastic force F1, and no water is injected into the overflow device. When the water inlet valve 5 is working, there are two streams of water, one of which is injected into the toilet water tank 6, and the other is injected into the overflow device through the water supply pipe 50. When the gravity F2 of the flowing water is greater than the elastic force F2 of the elastic body 23, the check valve 2 opens, and the excess water enters the toilet pipe through the valve base drain port to realize the "water supply" function.

[0029] like Figure 7 The figure shows another schematic diagram of the overflow system when it is independently installed on the toilet water tank 6. When the toilet water tank 6 is normally filled with water, the working water level is lower than the overflow water level, and the check valve 2 is in a closed state due to the elastic force F1 (the elastic force F1 is greater than the gravity of the water body). The bottom end of the water inlet pipe 11 is in the water seal area 200, and the water in the water seal area 200 plays a role in isolating the air, that is, the valve base drain port cannot be connected to the outside air through the overflow device. Therefore, the drain port of the drain valve 4 base is almost in a full pipe water state, thereby increasing the drainage flow rate. When the water inlet valve 6 does not stop water and continues to inlet water, the toilet water tank 6 will overflow, and water will flow into the water inlet pipe 11 from the overflow port. When the gravity F4 of the water is greater than the elastic force F5, the check valve 2 opens, and the bottom surface of the water inlet pipe 11 is separated from the liquid surface of the water seal area 200, and the water flows to the toilet pipe through the valve base drain port to achieve overflow.

[0030] 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 improving overflow capacity and accelerating the discharge speed of a drain valve, characterized in that: The invention comprises an outer shell and a check valve arranged inside the outer shell, wherein a cavity is arranged inside the outer shell, and a water inlet pipe and a water discharge pipe connected with the cavity are respectively fixedly connected to the top and the bottom of the outer shell, and the check valve comprises a valve stem, a valve sleeve, an elastomer, a support plate and an annular water baffle plate, wherein the valve sleeve is fixed at the lower part inside the cavity, the bottom of the valve stem is installed in the valve sleeve and can move up and down, the support plate is fixed to the top of the valve stem, the elastomer is sleeved on the outside of the valve stem and presses upward against the support plate, the annular water baffle plate is fixed on the top of the support plate, an overflow port is arranged on the top of the annular water baffle plate, a water seal area is formed between the annular water baffle plate and the support plate, the bottom end of the water inlet pipe extends into the water seal area, and the bottom surface of the water inlet pipe is sealed and fitted with the upper surface of the support plate.

2. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 1, characterized in that: The water inlet pipe corresponds to the upper and lower positions of the drain pipe. The shell is fixed with a plurality of support rods extending toward the axial direction of the drain pipe at the connection between the cavity and the drain pipe, and the valve sleeve is fixed on the support rods.

3. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 1, characterized in that: The elastic body is a metal spring or a rubber spring.

4. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 1, characterized in that: The shell comprises an upper cover and a lower cover which are plugged into each other, the water inlet pipe is fixed on the upper cover, and the drain pipe is fixed on the lower cover.

5. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 1, characterized in that: It also includes an overflow cap, which is fixedly installed on the top of the water inlet pipe. The overflow cap includes a main body, an overflow pipe that runs through the main body is opened inside, a water retaining part for blocking the water inlet end of the overflow pipe is fixed at the upper end of the inner wall of the overflow pipe, and a water inlet hole connected to the drainage end of the overflow pipe is opened on the side wall of the main body.

6. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 5, characterized in that: The bottom of the water retaining portion extends downward to form a guide portion, and the outer wall surface of the guide portion is provided with a guide arc surface at a position opposite to the water inlet hole.

7. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 6, characterized in that: There are a plurality of water inlet holes, which are evenly distributed along the circumference of the side wall of the main body.

8. An overflow device for improving overflow capacity and accelerating drain valve discharge speed as claimed in claim 7, characterized in that: A water supply pipe for inserting a water supply pipe is provided in the water retaining part, and the water supply pipe passes through the water retaining part and the flow guide part from top to bottom.

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