Breathing valve

Abstract

The utility model provides a breather valve, which is mounted in a breathing tube pipeline of a water dispenser and comprises a valve body, a piston and a valve core, the piston is arranged in an inner cavity of the valve body, and the valve element is arranged in a through center hole of the piston in a penetrating mode. The bottom end of the valve element extends out of the position below the piston, a cylinder at the bottom end of the valve element is blocked by the piston, and limiting of the valve element is achieved. The breathing valve is simple and reasonable in structure, high in integrity and suitable for breathing control of the water tank of the water dispenser, and when water is supplemented to the water tank, air pressure in the water tank rises to push the piston in the breathing valve to exhaust air in the water tank; when the water dispenser takes water, the water tank pumps water to form negative pressure, a valve element in the breather valve is sucked, and steam generated by heating is mixed with outside air to enter the water tank; when the water dispenser is not used, the breather valve is in a closed state, so that the water tank of the water dispenser can be effectively prevented from being polluted by pollution sources in ambient air; the breather valve is simple in production and assembly process, convenient to operate and convenient to popularize and apply in production and life.

Description

Technical Field

[0001] The utility model relates to the field of water dispensers, in particular to the technical field of the breathing device of the water dispenser water tank, and specifically, to a breathing valve. Background Art

[0002] At present, most water dispensers are provided with a water tank inside the machine case. Since the water stored inside the water tank needs to circulate with the external environment, the water tank inevitably comes into contact with the ambient air.

[0003] However, at the present stage, most manufacturers consider the water dispenser only as a heating product when designing water dispenser products. As long as the electrical appliances meet the 3C certification requirements, the materials in contact with drinking water meet the hygiene requirements, and the drinking water source uses pure water, they ignore the hygiene and safety measures related to the contact between the water tank and the ambient air, and do not make detailed and effective hygiene and safety designs for the air inlet, air outlet structure and process of the water tank.

[0004] After the existing water dispenser products are used for a long time, it is inevitable that bacteria and other pollution sources from the ambient air will enter the water tank, pollute the drinking water source, and endanger the health of users. Summary of the Utility Model

[0005] In view of this, the purpose of the utility model is to design a breathing valve, which controls the breathing of the water dispenser water tank through the breathing valve. A piston is arranged inside the breathing valve, and a valve core is arranged inside the piston. A seal and a one-way movement are formed between the valve core and the piston, and a seal and a one-way movement are formed between the piston and the valve body. By designing the movement directions of the valve core and the piston to be opposite to each other, two-way control of the breathing valve is realized. When the water tank is replenished with water, the air pressure inside the water tank increases, pushing the piston inside the breathing valve to discharge the air in the water tank; when the water dispenser takes water and pumps water, a negative pressure is formed in the water tank, sucking the valve core inside the breathing valve, so that the steam generated by heating is mixed with the external air and enters the water tank, and the steam is used to sterilize the external air entering the water tank; when the water dispenser is not in use, the breathing valve is in a closed state, thus avoiding the pollution of the water dispenser water tank by the pollution sources in the ambient air.

[0006] The utility model provides a breathing valve, which is installed in the breathing pipe of the water dispenser and comprises: a valve body, a piston and a valve core; the piston is arranged in the inner cavity of the valve body and can move, and the valve core is arranged in the through central hole of the piston; the valve core is designed as an inverted T-shaped cylinder, the bottom end of the valve core extends below the piston, and the cylinder at the bottom end of the valve core is blocked by the piston, and the limit of the valve core is realized through the cross section of the cylinder.

[0007] Specifically, the piston moves only in one direction, i.e., towards the upper part of the breathing valve, and the spool moves only in the opposite direction to the piston's movement direction. That is, the piston can only expel air towards the outside of the breathing valve and cannot enter from the outside of the breathing valve; the spool can only intake air towards the inside of the breathing valve and cannot go out through the inside of the breathing valve. It is equivalent to having two one-way valves with one intake and one outlet in the structure of the breathing valve. The piston can only be pushed outwards to control the air outlet; the spool can only be pulled inwards to control the air intake. When the water tank of the water dispenser is replenished with water, the air pressure in the water tank of the water dispenser pushes the piston open to exhaust air; when water is taken from the water dispenser, the water outlet from the water tank generates a siphon through the pump and sucks the spool open.

[0008] Further, a groove is radially provided at the top end of the spool, and a spool retaining spring is arranged in the groove. The spool retaining spring is used to fix the spool return spring, and the spool return spring is sleeved outside the spool. The spool return spring is used for the spool to reset after movement. When the negative pressure in the water tank is greater than the pressure of the spool return spring, the spool opens; when the negative pressure in the water tank is less than the pressure of the spool return spring, the spool closes. When the spool opens, the piston does not move; when the piston opens, the spool moves together with the piston.

[0009] Further, a convex structure is provided on the upper part of the piston, and a piston return spring is sleeved on the convex structure. The piston return spring is used for the piston to reset after movement. When the pressure in the water tank is greater than the pressure of the piston return spring, the piston is pushed open; when the pressure in the water tank is less than the pressure of the piston return spring, the piston closes.

[0010] Further, a plurality of through holes (preferably 4) are uniformly arranged in a 360° circumferential direction along the outer circumference of the central hole of the piston. The air holes are used to intake air into the breathing valve through the air holes when the spool opens.

[0011] When the water tank of the water dispenser is in the air intake state, there is a negative pressure in the pipeline below the breathing valve, and the negative pressure generates a suction force to pull the spool downwards, creating a gap between the spool and the piston, and the gas flows through the valve body through a plurality of (preferably 4) air holes provided on the piston.

[0012] When the water tank of the water dispenser is in the air outlet state, there is a positive pressure in the pipeline below the breathing valve, and the air pressure enters the valve body, pushing the piston and the spool upwards together, creating a gap between the piston and the piston gasket, and the gas passes through the valve body through the gap between the piston and the inner wall of the valve body.

[0013] Further, the spool is an inverted T-shaped cylinder, the bottom end of the spool covers or separates from a plurality of air holes on the piston, and the diameter of the bottom end of the spool is greater than the diameter of the circumferential outer edge of the arrangement of the plurality of air holes.

[0014] Specifically, when the valve core is opened, air enters through the air hole. When the water dispenser water tank is in the closed state, the valve core is closed, and the air hole is covered by the cross-section at the bottom of the valve core and the valve core gasket, stopping the intake of air.

[0015] Further, a valve core gasket is provided at the bottom end of the valve core. The valve core gasket is used for sealing between the piston and the valve core, and the sealing between the valve core and the piston is achieved through the valve core gasket.

[0016] Preferably, a flat shoulder is provided at the bottom of the inner cavity of the valve body, and a piston gasket is provided above the flat shoulder. The piston gasket is used for sealing between the piston and the valve body.

[0017] Further, a valve body cover is provided at the upper end of the valve body. A through hole is provided at the center of the valve body cover. The through hole is used for the intake and outlet of air above the inside of the breathing valve.

[0018] Further, a guide ring is provided in the middle on the lower side of the valve body cover. The upper section of the piston return spring is sleeved on the guide ring. The upper and lower ends of the piston return spring are respectively sleeved on the guide ring and the convex structure, improving the installation stability of the piston return spring.

[0019] Further, a valve body sealing ring and a sealing groove are provided annularly on the outside of the valve body. The sealing between the breathing valve and the breathing pipe is achieved through the valve body sealing ring and the sealing groove.

[0020] Preferably, radial grooves are respectively provided on the upper and lower sections of the outside of the valve body, and a valve body sealing ring (O-ring) is placed in the radial grooves.

[0021] Further, a ring groove is provided on the upper part of the outer wall of the valve body, and a ring tenon is provided on the lower part of the inner wall of the valve body cover. The ring groove and the ring tenon form a snap structure, and the valve body cover and the valve body are snap-connected through the ring groove and the ring tenon, with firm connection and convenient installation and disassembly.

[0022] In the present utility model, a piston is provided inside the breathing valve. The central hole of the piston penetrates through the valve core. Sealing and one-way movement are formed between the valve core and the piston, and sealing and one-way movement are formed between the piston and the valve body. Corresponding return springs are sleeved on both the valve core and the piston. In the absence of any pressure, both the valve core and the piston are in the closed state under the action of the return springs, and the channel inside the breathing valve is in the closed state. Since the movement directions of the valve core and the piston are designed to be opposite to each other, two-way control of the breathing valve is achieved, and the channel is opened when the positive and negative pressures of the medium are greater than the pressure of the spring.

[0023] Preferably, a water pump is provided from the water outlet of the water tank to the heating assembly. A check valve is provided inside the water pump, and the spring pressure of the check valve inside the water pump is greater than the spring pressure inside the breathing valve. When the water tank is replenished with water, the air in the closed water tank is compressed and the breathing valve opens to exhaust air. At this time, no water will flow out of the water outlet of the water tank when the water pump is not working.

[0024] The breathing valve of the present utility model is applicable to controlling the breathing of the water dispenser water tank. When the water tank is replenished with water, the air pressure inside the water tank rises, pushing the piston inside the breathing valve to exhaust the air inside the water tank; when the water dispenser takes water, a negative pressure is formed by pumping water from the water tank, sucking the valve core inside the breathing valve, so that the steam generated by heating is mixed with the outside air and enters the water tank; when the water dispenser is not in use, the breathing valve is in a closed state, thereby effectively avoiding the pollution of the water tank by the pollution sources in the ambient air.

[0025] Compared with the prior art, the beneficial effects of the present utility model are:

[0026] The breathing valve provided by the present utility model has a simple and reasonable structure, strong integrity, and is applicable to the breathing control of the water dispenser water tank. When the water tank is replenished with water, the air pressure inside the water tank rises, pushing the piston inside the breathing valve to exhaust the air inside the water tank; when the water dispenser takes water, a negative pressure is formed by pumping water from the water tank, sucking the valve core inside the breathing valve, so that the steam generated by heating is mixed with the outside air and enters the water tank; when the water dispenser is not in use, the breathing valve is in a closed state, thereby effectively avoiding the pollution of the water dispenser water tank by the pollution sources in the ambient air; and the production and assembly process of this breathing valve is simple, the operation is convenient, the cost is low, and it is convenient to be popularized and applied in production and life. Description of the Drawings

[0027] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model.

[0028] In the drawings:

[0029] Figure 1 is the structural cross-sectional view of the breathing valve of the embodiment of the present utility model;

[0030] Figure 2 is the structural exploded view of the breathing valve of the embodiment of the present utility model;

[0031] Figure 3 is the structural external view of the piston and the piston return spring part of the embodiment of the present utility model;

[0032] Figure 4 is the structural exploded view of the valve core assembly of the embodiment of the present utility model;

[0033] Figure 5Schematic diagram of the installation of the breathing valve according to an embodiment of the present utility model in the breathing pipe of a water dispenser

[0034] Figure 6 System diagram of a water dispenser according to an embodiment of the present utility model

[0035] Figure 7 Structural sectional view of the breathing valve according to an embodiment of the present utility model

[0036] Figure 8 Closed state diagram of the water dispenser water tank according to an embodiment of the present utility model

[0037] Figure 9 Air intake state diagram of the water dispenser water tank according to an embodiment of the present utility model

[0038] Figure 10 Air outlet state diagram of the water dispenser water tank according to an embodiment of the present utility model

[0039] Explanation of the reference numerals in the attached drawings

[0040] 1 - valve body; 2 - valve body cover; 3 - valve body sealing ring; 4 - valve core; 5 - valve core sealing gasket; 6 - piston; 7 - piston sealing gasket; 8 - valve core retaining ring; 9 - valve core return spring; 10 - piston return spring; 11 - flat shoulder; 12 - air hole Detailed implementation manners

[0041] Here, the exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims

[0042] The terms used in the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms "a", "the", and "said" used in the present disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items

[0043] It should be understood that although the terms first, second, and third may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "while" or "in response to a determination".

[0044] Embodiment

[0045] An embodiment of the present utility model provides a breathing valve, which is installed in the breathing pipe of a water dispenser (as shown in Figure 6 ). The piston 6 is arranged in the inner cavity of the valve body 1. The valve core 4 passes through the through central hole of the piston 6. The valve core 4 is an inverted T-shaped cylinder. The bottom end of the valve core 4 extends below the piston 6. The valve core 4 is limited by the cross-section of the cylinder at the bottom end by the piston 6. The valve core retaining ring 8 is snapped into the groove radially arranged at the top end of the valve core 4, and the valve core return spring 9 is sleeved outside the valve core 4 (as shown in Figure 1 , 2 , 4, 7).

[0046] A seal and one-way movement are formed between the valve core 4 and the piston 6, and a seal and one-way movement are formed between the piston 6 and the valve body 1. The valve core 4 and the piston 6 are both sleeved with corresponding return springs (as shown in Figure 3 ). In the absence of any pressure, the valve core 4 and the piston 6 are both in a closed state under the action of the return spring, and the passage in the breathing valve is in a closed state. Since the movement directions of the valve core 4 and the piston 6 are designed to face each other, two-way control of the breathing valve is realized, and the passage is opened when the positive and negative pressures of the medium are greater than the pressure of the spring. When the air pressure below the breathing valve is negative and the negative pressure is greater than the pressure of the valve core return spring 9, the valve core 4 opens; when the air pressure below the breathing valve is negative and the negative pressure is less than the pressure of the valve core return spring 9, the valve core 4 closes. When the valve core 4 opens, the piston 6 does not move; when the piston 6 opens, the valve core 4 moves together with the piston 6. The piston return spring 10 is sleeved in the convex structure on the upper part of the piston 6. When the air pressure below the breathing valve is greater than the pressure of the piston return spring 10, the piston 6 is pushed open; when the air pressure below the breathing valve is less than the pressure of the piston return spring 10, the piston 6 closes. Four through air holes 12 are uniformly arranged circumferentially at 360° along the outer circumference of the central hole of the piston 6. When the valve core 4 opens, air enters the breathing valve through the air holes 12. When the water dispenser water tank is in a closed state (as shown in Figure 8 ), the valve core 4 closes, and the bottom end cross-section of the valve core 4 covers the 4 air holes 12 on the piston 6, and the air holes 12 are covered, stopping air intake.

[0047] When the water dispenser water tank is in an air intake state (as shown in Figure 9When in the state shown in the figure, there is negative pressure in the pipeline below the breathing valve. The negative pressure generates suction to pull the valve core 4 downward, creating a gap between the valve core 4 and the piston 6. The gas flows through the four air holes 12 provided on the piston 6 and passes through the valve body 1. When the water dispenser water tank is in the air outlet state (such as Figure 10 shown in the figure), there is positive pressure in the pipeline below the breathing valve. The air pressure enters the valve body 1, pushing the piston 6 together with the valve core 4 upward, creating a gap between the piston 6 and the piston gasket 7. The gas passes through the gap between the piston 6 and the inner wall of the valve body 1 and penetrates through the valve body 1.

[0048] A valve core gasket 5 is provided at the bottom end of the valve core 4, and the valve core gasket 5 is arranged between the valve core 4 and the piston 6 to achieve the seal between the valve core 4 and the piston 6.

[0049] A flat shoulder 11 is provided at the bottom of the inner cavity of the valve body 1, and a piston gasket 7 is provided above the flat shoulder 11 for the seal between the piston 6 and the valve body 1.

[0050] A through hole is provided at the center of the valve body cover 2 for the intake and outlet of air above the breathing valve inside. A guide ring is provided in the middle of the lower side of the valve body cover 2, and the upper end of the valve core return spring 9 is sleeved on the guide ring.

[0051] The ring tenon of the valve body cover 2 is buckled into the ring groove of the valve body 1 to form a snap structure, realizing the snap connection between the valve body cover 2 and the valve body 1, which is convenient for installation and disassembly and has convenient operation.

[0052] Valve body gaskets 3 and sealing grooves (radial grooves) are respectively provided on the upper and lower sections outside the valve body 1, and an O-ring is placed in the radial groove for the seal between the breathing valve and the breathing pipe (such as Figure 5 shown in the figure).

[0053] The assembly process of the breathing valve in this embodiment in an actual application mainly includes the following operating steps:

[0054] (1) Fit the valve core gasket 5 onto the valve core 4, pass the valve core 4 through the central hole on the piston 6, install the valve core return spring 9 onto the valve core 4, and connect the valve core snap ring 8 with the valve core 4 to complete the assembly of the valve core assembly;

[0055] (2) Place the piston gasket 7 at the flat shoulder 11 of the valve body 1, put the valve core assembly into the valve body 1, and fit the piston return spring 10 onto the raised structure provided above the piston 6; finally, align the guide ring provided in the middle of the valve body cover 2 with the piston return spring 10, and press the valve body cover 2 forcefully to complete the assembly of all the internal structural parts of the valve body 1.

[0056] The breathing valve structure of the embodiment of the present utility model is simple and reasonable, with strong integrity, and is applicable to the breathing control of the water dispenser water tank. When the water tank is replenished with water, the air pressure in the water tank rises, pushing the piston in the breathing valve to discharge the air in the water tank; when the water dispenser draws water, a negative pressure is formed in the water tank, sucking the valve core in the breathing valve, so that the steam generated by heating is mixed with the outside air and enters the water tank; when the water dispenser is not in use, the breathing valve is in a closed state, which can effectively prevent the water dispenser water tank from being polluted by the pollution sources in the ambient air; the production and assembly process of the breathing valve is simple and the operation is convenient.

[0057] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

[0058] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model; for those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent substitution, and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A breathing valve, characterized in that, Installed in the breathing tube of the water dispenser, it includes: a valve body, a piston, and a valve core; the piston is arranged to be movable in the inner cavity of the valve body, and the valve core is inserted through the central hole penetrated by the piston; the valve core is designed as an inverted T-shaped cylinder, the bottom end of the valve core extends below the piston, and the cylinder at the bottom end of the valve core is blocked by the piston to achieve the limit of the valve core.

2. The breathing valve according to claim 1, characterized in that, A groove is radially provided at the top end of the valve core, a valve core snap ring is arranged in the groove, and a valve core return spring is sleeved outside the valve core.

3. The breathing valve according to claim 1, wherein A convex structure is provided on the upper part of the piston, and a piston return spring is sleeved on the convex structure.

4. The breathing valve according to claim 1, characterized in that, A plurality of through holes are arranged uniformly in a 360° circumferential direction along the outer circumference of the central hole of the piston.

5. The breathing valve according to claim 4, characterized in that, The valve core is an inverted T-shaped cylinder, the bottom end of the valve core covers or separates from a plurality of air holes on the piston, and the diameter of the bottom end of the valve core is larger than the diameter of the circumferential outer edge where the plurality of air holes are arranged.

6. The breathing valve according to claim 1, characterized in that, A valve core gasket is provided at the bottom end of the valve core, and the valve core gasket is used for sealing between the piston and the valve core.

7. The breathing valve according to claim 1, characterized in that, A valve body cover is provided at the upper end of the valve body, and a through hole is provided in the center of the valve body cover.

8. The breathing valve according to claim 7, characterized in that A guide ring is provided in the middle on the lower side of the valve body cover, and the upper end of the piston return spring is sleeved on the guide ring.

9. The breathing valve according to claim 1, characterized in that, A valve body seal ring and a seal groove are provided in a ring shape outside the valve body.

10. The breathing valve according to claim 7, characterized in that, A ring groove is provided on the upper part of the outer wall of the valve body, and a ring tenon is provided on the lower part of the inner wall of the valve body cover. The ring groove and the ring tenon form a snap structure, and the valve body cover and the valve body are snap-connected through the ring groove and the ring tenon.

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