A float-type check valve

Abstract

This utility model provides a float-type one-way valve, belonging to the field of valve technology. It solves the problem that existing air conditioning condensate drain pipes are directly connected to the outside. This float-type one-way valve includes a valve body and a valve core disposed within the valve body. The inner wall of the valve body has a plug-in seat, which is cylindrical with a smaller top and larger bottom, and is arranged axially along the valve body. A water storage groove is formed between the outer wall of the plug-in seat and the inner wall of the valve body. The valve core is spherical and has a positioning post, which is conical with a larger top and smaller bottom and is inserted into the plug-in seat. The valve body also has a limiting structure to prevent the positioning post from disengaging from the plug-in seat. The density of the valve core is less than that of water, and under the action of gravity, the valve core can abut against the plug-in seat and form a seal. This utility model has the advantage of enabling one-way flow of air conditioning condensate drain pipes.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology and relates to a float-type one-way valve. Background Technology

[0002] Air conditioning water is the condensate produced during the operation of the air conditioning system. The condensate needs to be discharged to the outside in a timely manner through the air conditioning condensate drain pipe. Therefore, the existing air conditioning condensate drain pipes are directly connected to the outside. Sometimes, snakes, rats, insects and ants from the outside can enter the indoor unit through the air conditioning condensate drain pipe. This not only affects the normal operation of the air conditioner, but these small animals may also carry various pathogens such as viruses, bacteria and parasites. Their feces, urine and other excrement may pollute the residential environment and even bite residents, increasing the risk of residents contracting diseases. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a float-type one-way valve. The technical problem this invention aims to solve is how to achieve one-way flow in the air conditioning condensate drain pipe.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A float-type one-way valve includes a valve body and a valve core disposed within the valve body. The valve body has an insertion seat on its inner wall. The insertion seat is cylindrical, wider at the bottom and narrower at the top, and is arranged axially along the valve body. A water storage groove is formed between the outer wall of the insertion seat and the inner wall of the valve body. The valve core is spherical and has a positioning post. The positioning post is conical, wider at the top and narrower at the bottom, and is inserted into the insertion seat. The valve body also has a limiting structure to prevent the positioning post from disengaging from the insertion seat. The density of the valve core is less than that of water, and under gravity, the valve core can abut against the insertion seat and form a seal.

[0006] This float-type check valve has a simple structure and ingenious design. In use, it can control the opening and closing of the valve by relying solely on the buoyancy of the air conditioner condensate and the weight of the valve core itself. This enables one-way flow of the air conditioner condensate discharge pipe and provides excellent protection against odors, backflow, mosquitoes, snakes, and rodents.

[0007] Specifically, during operation, air conditioner condensate flows from top to bottom into the valve body and enters the water storage tank. When the amount of condensate in the tank reaches a certain level (the connector is cylindrical with a smaller top and larger bottom to store enough water to provide sufficient buoyancy), because the valve core's density is less than that of water, it can overcome its own weight and move upward under the action of buoyancy. This creates a drainage channel between the valve core and the connector, allowing the condensate in the valve body to pass through this channel and eventually be discharged. Simultaneously, because the positioning pin has a certain length, the valve core... With a certain weight, and the reduction of air conditioning condensate in the water tank through the drain channel when the valve core floats up, and the fact that the positioning column is cone-shaped with a larger top and a smaller bottom, the greater the distance the valve core moves upward under the action of buoyancy, the greater the drainage volume of the aforementioned drain channel. Therefore, it can achieve one-way flow of the air conditioning condensate discharge pipeline and meet the normal discharge requirements of air conditioning condensate. In addition, the valve body is also provided with a limiting structure to prevent the positioning column from disengaging from the plug seat, which can avoid the failure of this float-type one-way valve due to the positioning column disengaging from the plug seat.

[0008] During rest periods, the air conditioner condensate no longer flows into the valve body. Under the influence of gravity, the valve core moves downward again and abuts against the connector to re-form a seal. Because the valve core has a certain weight, and the connector is cylindrical with a smaller top and a larger bottom, small snakes, insects, rodents, and other animals cannot completely push open the valve core and enter the valve body. This achieves one-way flow of the air conditioner condensate drain pipe, providing excellent protection against odors, backflow, and insects, snakes, and rodents.

[0009] In the aforementioned float-type check valve, the limiting structure is a positioning block integrally connected to the inner wall of the valve body. The positioning block protrudes radially along the valve body and limits the axial movement of the valve core. The distance between the plug-in seat and the positioning block is less than the length of the valve core. By setting the positioning block, the valve core's positioning pin can be prevented from completely disengaging from the plug-in seat, thus preventing the float-type check valve from failing and improving its reliability. Alternatively, the limiting structure can be a limiting groove vertically formed on the inner wall of the valve body. The valve core has a limiting block embedded in the limiting groove and can move up and down along the groove. The length of the limiting groove is less than the length of the positioning pin.

[0010] In the aforementioned float-type check valve, the positioning block is annular, with a flat top surface and an inner diameter smaller than that of the valve core. This design facilitates the manufacturing of the positioning block and allows for better axial movement restriction of the valve core, enabling better passage of air conditioning condensate. Furthermore, the positioning block's structure forms a socket with the inner wall of the valve body, facilitating connection between the float-type check valve and the air conditioning condensate drain pipe.

[0011] In the aforementioned float-type check valve, the bottom surface of the connector is flat, the outer wall of the positioning pin is a cylindrical surface that is larger at the top and smaller at the bottom, and the inner wall of the connector is a frustum-shaped surface that is smaller at the top and larger at the bottom. This facilitates the formation of a seal when the valve core abuts against the connector. Furthermore, the flat bottom surface of the connector allows for the formation of a socket between the connector and the inner wall of the valve body, facilitating the connection of this float-type check valve to the air conditioning condensate drain pipe.

[0012] In the aforementioned float-type check valve, the valve body includes a threaded upper valve housing and a lower valve housing. A sealing ring is provided at the threaded connection between the upper and lower valve housings. The outer wall of the upper valve housing has an annular stepped surface, and the outer wall of the lower valve housing has several circumferentially arranged stepped portions. This design facilitates the assembly and disassembly of the float-type check valve itself and ensures the valve body's sealing performance. Furthermore, a socket is formed between the annular stepped surface and the outer wall of the upper valve housing, and another socket is formed between the stepped portions and the outer wall of the upper valve housing, facilitating the assembly and disassembly of the float-type check valve to the air conditioning condensate drain pipe.

[0013] Compared with existing technologies, the advantages of this float-type check valve are: the float-type check valve has a simple structure and ingenious design. When in use, it can control the opening and closing of the float-type check valve by relying only on the buoyancy of the air conditioner condensate and the weight of the valve core itself, thereby achieving one-way flow of the air conditioner condensate discharge pipe and providing excellent odor prevention, backflow prevention, and mosquito, snake, and rodent prevention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of this float-type check valve.

[0015] Figure 2 This is a cross-sectional view of this float-type check valve.

[0016] Figure 3 This is an exploded view of a float-type check valve.

[0017] In the figure, 1 is the valve body; 1a is the plug-in seat; 1b is the positioning block; 1c is the upper valve shell; 1c1 is the annular stepped surface; 1d is the lower valve shell; 1d1 is the stepped part; 2 is the valve core; 2a is the positioning pin; 3 is the sealing ring; and 4 is the water storage tank. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] A float-type check valve, as described above Figure 1-3The valve body includes a valve body 1 and a valve core 2 disposed within the valve body 1. The inner wall of the valve body 1 has a plug seat 1a. The plug seat 1a is cylindrical with a smaller upper part and a larger lower part and is disposed along the axial direction of the valve body 1. A water storage groove 4 is formed between the outer wall of the plug seat 1a and the inner wall of the valve body 1. The valve core 2 is spherical and has a positioning post 2a. The positioning post 2a is conical with a larger upper part and a smaller lower part and is inserted into the plug seat 1a. The valve body 1 is also provided with a limiting structure to prevent the positioning post 2a from dislodging from the plug seat 1a. The density of the valve core 2 is less than the density of water, and under the action of gravity, the valve core 2 can abut against the plug seat 1a and form a seal.

[0020] Reference Figure 2 Furthermore, the limiting structure is a positioning block 1b integrally connected to the inner wall of the valve body 1. The positioning block 1b protrudes radially along the valve body 1 and limits the axial movement of the valve core 2. The distance between the plug seat 1a and the positioning block 1b is less than the length of the valve core 2.

[0021] Reference Figure 2 Specifically, the positioning block 1b is annular, the top surface of the positioning block 1b is flat, and the inner diameter of the positioning block 1b is smaller than the diameter of the valve core 2.

[0022] In this embodiment, the bottom surface of the plug-in seat 1a is preferably a plane, the outer wall of the positioning post 2a is a cylindrical surface that is larger at the top and smaller at the bottom, and the inner wall of the plug-in seat 1a is a frustum-shaped surface that is smaller at the top and larger at the bottom.

[0023] Reference Figure 1 , Figure 2 and Figure 3 More specifically, the valve body 1 includes an upper valve housing 1c and a lower valve housing 1d connected by threads. A sealing ring 3 is provided at the threaded connection between the upper valve housing 1c and the lower valve housing 1d. The outer side wall of the upper valve housing 1c has an annular stepped surface 1c1, and the outer side wall of the lower valve housing 1d has a plurality of circumferentially arranged stepped portions 1d1.

[0024] The working principle of this float-type check valve is explained below:

[0025] In use, this float-type check valve is installed vertically in the air conditioning condensate drain pipe (e.g., Figure 2 As shown), in the initial state, under the action of gravity, the valve core 2 abuts against the plug seat 1a and forms a seal;

[0026] During operation, air conditioner condensate flows from top to bottom into valve body 1 through the inlet of upper valve housing 1c. The condensate then enters the water storage tank 4. When the condensate in the water storage tank 4 reaches a certain volume (the plug-in seat 1a is cylindrical with a smaller top and larger bottom to store sufficient water for buoyancy), because the density of valve core 2 is less than that of water, it can overcome its own weight and move upwards under the action of buoyancy. This creates a drainage channel between valve core 2 and the plug-in seat 1a. The condensate in upper valve housing 1c can then enter lower valve housing 1d through this drainage channel and finally be discharged. Because the positioning column 2a has… With a certain length, the valve core 2 has a certain weight. In addition, when the valve core 2 floats up, the air conditioner condensate is discharged through the drain channel, reducing the amount of water. Furthermore, the positioning post 2a is a cone shape that is larger at the top and smaller at the bottom. The more the valve core 2 moves upward, the greater the drainage volume of the drain channel. Therefore, it can achieve one-way flow of the air conditioner condensate discharge pipe and meet the normal discharge requirements of the air conditioner condensate. In addition, since the distance between the plug seat 1a and the positioning block 1b is less than the length of the valve core 2, the positioning post 2a of the valve core 2 will not completely detach from the plug seat 1a during use, thus preventing the float-type one-way valve from failing.

[0027] During rest periods, the air conditioner condensate no longer flows into valve body 1. Valve core 2 moves downward again under gravity, and valve core 2 abuts against the plug seat 1a and forms a seal again. Due to the weight of valve core 2, the cylindrical shape of plug seat 1a (smaller at the top and larger at the bottom), and the presence of positioning block 1b, small snakes, insects, rodents, and other animals cannot completely push open valve core 2 and enter valve body 1. This achieves one-way flow of air conditioner condensate discharge pipe, providing excellent odor prevention, backflow prevention, and protection against mosquitoes, insects, snakes, and rodents.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A float-type check valve, comprising a valve body (1) and a valve core (2) disposed within the valve body (1), characterized in that, The valve body (1) has a plug seat (1a) on its inner side wall. The plug seat (1a) is cylindrical with a smaller top and a larger bottom and is arranged along the axial direction of the valve body (1). A water storage tank (4) is formed between the outer side wall of the plug seat (1a) and the inner side wall of the valve body (1). The valve core (2) is spherical and has a positioning post (2a). The positioning post (2a) is conical with a larger top and a smaller bottom and is inserted into the plug seat (1a). The valve body (1) is also provided with a limiting structure to prevent the positioning post (2a) from dislodging from the plug seat (1a). The density of the valve core (2) is less than that of water, and under the action of gravity, the valve core (2) can abut against the plug seat (1a) and form a seal.

2. A float valve according to claim 1, wherein The limiting structure is a positioning block (1b) integrally connected to the inner wall of the valve body (1). The positioning block (1b) protrudes radially along the valve body (1) and limits the axial movement of the valve core (2). The distance between the plug seat (1a) and the positioning block (1b) is less than the length of the valve core (2).

3. A float valve according to claim 2, wherein The positioning block (1b) is annular, the top surface of the positioning block (1b) is flat, and the inner diameter of the positioning block (1b) is smaller than the diameter of the valve core (2).

4. A float-type check valve according to claim 1, characterized in that, The bottom surface of the connector (1a) is a plane, the outer wall of the positioning post (2a) is a cylindrical surface that is larger at the top and smaller at the bottom, and the inner wall of the connector (1a) is a frustum surface that is smaller at the top and larger at the bottom.

5. A ball float check valve according to claim 1 or 2 or 3 or 4, wherein The valve body (1) includes an upper valve housing (1c) and a lower valve housing (1d) connected by threads. A sealing ring (3) is provided at the threaded connection between the upper valve housing (1c) and the lower valve housing (1d). The outer side wall of the upper valve housing (1c) has an annular stepped surface (1c1), and the outer side wall of the lower valve housing (1d) has a plurality of stepped portions (1d1) arranged circumferentially.

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