TWM660785U - Check Valve - Google Patents

Abstract

The invention of a check valve comprises: a pipe having a valve hole, a water inlet hole and a water outlet hole, wherein the valve hole is vertically connected to the water inlet hole and the water outlet hole; a valve seat having a round valve, wherein the valve seat is obliquely disposed between the water inlet hole and the water outlet hole of the pipe, and the round valve defines a water inlet area and a water outlet area; and a valve core having a round contact surface, wherein the valve core is movably disposed between the valve hole and the round valve of the valve seat, and when the accumulated pressure at the water inlet hole When the pressure of the water inlet is lower than the pressure of the water outlet, the circular contact surface of the valve core and the circular valve are tightly fitted to completely seal the circular valve of the valve seat, so that the water in the water outlet cannot flow from the circular valve to the water inlet area, so that the outside air or drainage of other equipment cannot enter the air conditioning box.

Description

Check Valve

This invention is about a check valve structure, especially a check valve structure that uses a close fit design between a valve core and a valve when the valve core and the valve are combined to increase air tightness, thereby preventing outside air or drainage from other equipment from entering the air-conditioning box.

The drainage structure of a conventional negative pressure air conditioner mainly includes an air conditioner placed on a base platform and a water trap disposed on one side of the air conditioner. The water trap generally uses a U-shaped elbow to drain water. The base platform allows the air conditioner to form a sufficient height, so that the water column difference in the water trap forms a water seal. At the same time, the water column difference in the water trap is greater than the negative pressure in the air conditioner or the air duct, so that a large internal and external pressure difference is formed inside the water trap to prevent The outside air flows back into the air-conditioning box, thereby generating fluid movement to achieve the effect of drainage. However, this method has many disadvantages. For example, the base platform must be of sufficient height, otherwise it will affect the overall drainage quality. In addition, the large gap between the above-mentioned structure and the ground will inevitably affect the utilization of the space, making it uncomfortable for users to step on it, or even dangerous. Furthermore, the U-shaped curved pipe of the above-mentioned structure has the disadvantage of accumulating dirt and being difficult to clean, which ultimately hinders the smoothness of drainage and other problems.

In order to solve the above traditional problems, the industry has developed a negative pressure air conditioning box check valve structure that uses the action of a float to discharge the water smoothly, and the outside air or the water from other equipment cannot enter the air conditioning box. The float of this conventional check valve is a round body, and the valve is only a general flat opening, so the valve and the float (valve core) cannot be completely sealed. If it is subjected to external force and shakes, the float is easy to break away from the flat opening valve, so that the larger external water flow flows into the water hole and the outside air enters the air conditioning box. Therefore, how to provide a float (valve core) and a valve that can be tightly sealed to prevent the outside air or the water from other equipment from entering the air conditioning box is indeed a problem that the industry urgently needs to solve.

The purpose of this invention is to provide a check valve structure in which the valve core and the valve are tightly fitted in the structure to increase the air tightness and prevent the outside air or drainage of other equipment from entering the air conditioning box.

To achieve the above-mentioned purpose, the invention provides a check valve, comprising: a pipe having a valve hole, a water inlet hole and a water outlet hole, wherein the valve hole is vertically connected to the water inlet hole and the water outlet hole; a valve seat having a round valve, wherein the valve seat is obliquely disposed between the water inlet hole and the water outlet hole of the pipe, and the round valve defines a water inlet area and a water outlet area; and a valve core having a round contact surface, wherein the valve core is movably disposed between the valve hole and the round valve of the valve seat, and when the water inlet hole is closed, the valve core is moved. When the accumulated pressure is greater than the pressure of the water outlet hole, the valve core moves away from the valve seat under pressure, allowing water to flow from the water inlet area through the round valve to the water outlet area to allow water to be discharged smoothly. When the water inlet pressure is less than the water outlet pressure, the round contact surface of the valve core and the round valve are tightly fitted to completely seal the round valve of the valve seat, so that the water in the water outlet cannot flow from the round valve to the water inlet area, so that the outside air or drainage of other equipment cannot enter the air-conditioning box.

Preferably, the check valve is connected to one end of the air-conditioning box, wherein a drain pipe is provided on one side of the air-conditioning box and is connected to two ends of the drain pipe through the water inlet and the water outlet.

The check valve of the invention further comprises a valve cover, which is placed on the valve hole, and a hook is provided on the valve cover, and an opening is provided at the valve hole corresponding to the hook, so that when they are assembled, the hook is buckled at the opening, and the valve cover is fixed on the valve hole.

The check valve of the invention further comprises a baffle vertically arranged between the valve hole and the water outlet hole so that the valve core can accurately abut the circular valve of the valve seat.

Preferably, the check valve is provided with arrows marked as "+" and "-" on the front and back of the exterior to facilitate the connection and installation of the check valve with the air conditioning box.

Preferably, the check valve can be made of a hot-melt material with a certain tolerance, such as PVC, PE, PP, or a tough metal material, such as copper or iron.

Preferably, the check valve is disposed on a drain pipe extending parallel to the ground.

Preferably, the valve core is designed in a spherical shape, so that the valve core and the circular valve are both designed in a circular shape to increase air tightness.

The invention provides a check valve, comprising: a pipe having a valve hole, a water inlet hole and a water outlet hole, wherein the valve hole is vertically connected to the water inlet hole and the water outlet hole; a valve seat having a round valve, wherein the valve seat is obliquely disposed between the water inlet hole and the water outlet hole of the pipe, and the round valve defines a water inlet area and a water outlet area; and a valve core having a round contact surface, wherein the valve core is movably disposed between the valve hole and the round valve of the valve seat, and when the accumulated pressure at the water inlet hole is When the pressure of the water inlet is less than the pressure of the water outlet, the circular contact surface of the valve core and the circular valve are tightly fitted to completely seal the circular valve of the valve seat, so that the water in the water outlet cannot flow from the circular valve to the water inlet area, so that the outside air or drainage of other equipment cannot enter the air conditioning box.

Please refer to the first figure, which is a schematic diagram showing the connection of the check valve of the present invention with an air conditioning box. The check valve 100 of the present invention is connected with one end of the air conditioning box 1, wherein a drain pipe 2 is provided on one side of the air conditioning box 1, and the water inlet 12 and the water outlet 13 of the check valve 100 of the present invention are connected with the two ends of the drain pipe 2, so that the outside air cannot flow back to the air conditioning box 1. In this embodiment, the water inlet 12 and the water outlet 13 are joined by gluing, so that the check valve 100 of the present invention is set on the drain pipe 2 extending parallel to the ground 3, and the valve seat 20 is used to control the water flow in and out of the check valve 100.

Please continue to refer to the first figure and refer to the second figure A and the second figure B, which respectively show the exploded schematic diagram of the check valve of the present invention and the assembled schematic diagram of the check valve of the present invention. The check valve 100 of the present invention comprises: a pipe 10, a valve seat 20 (please refer to the third figure), and a valve core 30, wherein the pipe 10 has a valve hole 11, a water inlet hole 12 and a water outlet hole 13, and the valve hole 11 is vertically connected with the water inlet hole 12 and the water outlet hole 13; and the valve core 30 has a circular contact surface 31, and the valve core 30 is movably arranged between the valve hole 11 and the circular valve 21 of the valve seat 20 (please refer to the third figure).

Please continue to refer to the second figure A and the second figure B and refer to the third figure in conjunction. The third figure is a side cross-sectional view of the check valve of the present invention. The valve seat 20 of the check valve of the present invention has a round valve 21, and the valve seat 20 is obliquely placed between the water inlet 12 and the water outlet 13 of the pipe 10, and the round valve 21 defines a water inlet area 22 and a water outlet area 23. The check valve 100 of the present invention is further provided with a valve cover 40, which is placed on the valve hole 11, and the valve cover 40 is provided with a hook 41 The valve hole 11 is provided with an opening 14 corresponding to the hook 41, so that when assembling the check valve 100 of the present invention, the valve core 30 is placed between the valve hole 11 and the circular valve door 21 of the valve seat 20 through the valve hole 11, and then the hook 41 is buckled at the opening 14, so that the valve cover 40 is fixed on the valve hole 11 to complete the assembly of the check valve 100 of the present invention. When the check valve 100 of the invention is in operation, when the water accumulated in the air-conditioning box flows into the water hole 12, if the accumulated pressure of the water inlet hole 12 is greater than the pressure of the water outlet hole 13 at this time, the valve core 30 moves away from the valve seat 20 after being pressurized, so that the water can flow from the water inlet area 22 through the circular valve 21 to the water outlet area 23, so that the water can be discharged smoothly. When the pressure of the water inlet hole 12 is less than the pressure of the water outlet hole 13, the circular contact surface 31 of the valve core 30 and the circular valve 21 are tightly fitted to completely seal the circular valve 21 of the valve seat 20, so that the water outlet hole 13 can be discharged smoothly. The water in the water hole 13 cannot flow from the circular valve 21 to the water inlet area 22, so that the outside air or the drainage of other equipment cannot enter the air-conditioning box 1; in addition, the check valve 100 of the present invention is further provided with a baffle 50 vertically between the valve hole 11 and the water outlet hole 13, so that the valve core 30 can accurately abut the circular valve 21 of the valve seat 20; furthermore, the check valve 100 of the present invention is provided with arrows 60 marked as "+" and "-" on the front and back of the appearance, so as to facilitate the installation when the check valve 100 of the present invention is connected to the air-conditioning box 1.

Please continue to refer to the third figure. The check valve 100 of the present invention can be formed of a hot-melt material with a margin such as PVC, PE, PP, or a tough metal material such as copper, iron, etc., and in this embodiment, the valve core 30 is designed in a spherical shape, so that the valve core 30 and the circular valve 21 are both circular in design, thereby making the circular contact surface 31 of the valve core 30 more closely combined with the circular valve 21 to increase air tightness.

Please refer to the fourth and fifth figures, which are schematic diagrams showing the use of the check valve of this invention in which water is discharged smoothly and water cannot be discharged. The check valve 100 of the invention first connects the two drain pipes 2 with the water inlet 12 and the water outlet 13 on the check valve 100, and places the valve core 30 in the water outlet area 23 in the check valve 100, and connects the valve cover 40 to the valve hole 11. After the above installation is completed, an air conditioning box 1 in a negative pressure state (i.e., less than the external atmospheric pressure) is arranged above the ground 3; when in use, because the air pressure inside the air conditioning box 1 remains unchanged, the water inside the air conditioning box 1 flows into the drain pipe 2 through the siphon effect. At the same time, based on physical phenomena, the external air cannot enter the drain pipe 2 and the air conditioning box 1. When the water in the air-conditioning box flows into the water hole 12, the accumulated pressure of the water inlet hole 12 is greater than the pressure of the water outlet hole 13, which is enough to push the valve core 30 against the valve seat 20, and the valve core 30 is prevented from sliding randomly by the baffle 50, so that the water can be discharged smoothly from the water inlet area 22 through the valve seat 20 and then from the water outlet area 23, as shown in the fourth figure; on the contrary, when the water flow in the air-conditioning box 1 gradually decreases and is discharged into the drain pipe 2, the pressure of the air-conditioning box 1 is less than the external atmospheric pressure, which makes the pressure of the water inlet hole 12 less than the pressure of the water outlet hole 13, and the valve core 30 is pushed away. 30 is based on physical phenomena and is blocked by the baffle 50 so as not to slide out of the water outlet area 23, and then blocked on the valve seat 20. In addition, the valve core 30 and the circular valve 21 are both circular in structural design, so that the valve core 30 and the circular valve 21 are more closely fitted to increase air tightness, so that the water flow in the drain pipe 2 cannot pass through the valve seat 20 to the water outlet area 23, so as to prevent the external air or drainage of other equipment from flowing back into the air-conditioning box 1, so as to achieve the effect of the check valve 100 of the present invention that the external air or drainage of other equipment cannot enter the air-conditioning box 1.

The check valve of the invention has a circular structural design for the valve core and the circular valve, so that the valve core and the circular valve are more closely fitted to increase air tightness and prevent outside air from entering the air-conditioning box. In addition, the check valve of the invention has arrows marked for installation on the front and back of the exterior to facilitate installation when the check valve of the invention is connected to the air-conditioning box. The check valve of the invention is easy to install and prevents outside air or drainage of other equipment from entering the air-conditioning box.

After describing in detail the preferred embodiments of the invention, a person familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the patent application below, and the invention is not limited to the implementation methods of the embodiments listed in the specification. For example, the check valve of the invention can be used when the air-conditioning box is at negative pressure as well as when the air-conditioning box is at positive pressure. At this time, the direction of water inlet and outlet is exactly opposite to that when the air-conditioning box is at negative pressure, that is, the direction of water inlet and outlet is the same as the direction of the arrow 60 marked "+" and "-" on the valve body.

100: Check valve 1: Air conditioning box 2: Drain pipe 3: Ground 10: Pipeline 11: Valve hole 12: Water inlet hole 13: Water outlet hole 14: Opening hole 20: Valve seat 21: Round valve 22: Water inlet area 23: Water outlet area 30: Valve core 31: Round contact surface 40: Valve cover 41: Hook 50: Baffle

The first figure is a schematic diagram showing the connection between the check valve of the present invention and an air conditioning box.

Figure 2A shows the disassembled schematic diagram of the check valve in this work.

The second figure B is a schematic diagram showing the combination of the check valve of this invention.

The third figure shows a side cross-sectional view of the check valve of this invention.

The fourth figure is a schematic diagram showing the use of the check valve of the invention in which water is discharged smoothly.

The fifth figure is a schematic diagram showing the use status of the check valve of the present invention where water cannot be discharged.

100: Check valve

11: Valve hole

12: Water inlet

13: Water outlet

20: Valve seat

21: Round valve

22: Water entry area

23: Water outlet area

30: Valve core

31: Circular contact surface

40: Valve cover

50: Baffle

Claims (8)

A check valve comprises: a pipe having a valve hole, a water inlet hole and a water outlet hole, wherein the valve hole is vertically connected to the water inlet hole and the water outlet hole; a valve seat having a circular valve, wherein the valve seat is obliquely disposed between the water inlet hole and the water outlet hole of the pipe, and a water inlet area and a water outlet area are defined by the circular valve; and A valve core has a circular contact surface, and the valve core is movably arranged between the valve hole and the circular valve of the valve seat. When the accumulated pressure of the water inlet hole is greater than the pressure of the water outlet hole, the valve core moves away from the valve seat under pressure, so that water can flow from the water inlet area through the circular valve to the water outlet area to allow water to be discharged smoothly. When the water inlet pressure is less than the water outlet pressure, the circular contact surface of the valve core and the circular valve are tightly fitted to completely seal the circular valve of the valve seat, so that the water in the water outlet hole cannot flow from the circular valve to the water inlet area, so that the external air or drainage of other equipment cannot enter the air conditioning box. The check valve as described in claim 1, wherein the check valve is connected to one end of the air-conditioning box, wherein a drain pipe is provided on one side of the air-conditioning box and is connected to two ends of the drain pipe through the water inlet and the water outlet. The check valve as described in claim 1 further includes a valve cover, which is placed on the valve hole and has a hook on the valve cover. The valve hole has an opening corresponding to the hook, so that when they are assembled, the hook is buckled into the opening to fix the valve cover on the valve hole. The check valve as described in claim 1 further includes a baffle vertically arranged between the valve hole and the water outlet hole so that the valve core can accurately abut the circular valve of the valve seat. A check valve as described in claim 1, wherein the check valve has arrows marked with "+" and "-" on the front and back of the exterior to facilitate the connection and installation of the check valve with the air conditioning box. The check valve as described in claim 1, wherein the check valve can be made of a hot-melt material with a tolerance such as PVC, PE, PP, or a tough metal material such as copper, iron, etc. A check valve as described in claim 1, wherein the check valve is arranged on a drain pipe extending parallel to the ground. The check valve as described in claim 1, wherein the valve core is designed to be spherical, so that the valve core and the circular valve are both designed to be circular to increase air tightness.

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