Backflow alarm secondary check valve

Abstract

The utility model relates to the technical field of two-stage check valves, in particular to a backflow alarm two-stage check valve which comprises a first shell, a connecting pipe is arranged on one side of the first shell, a second shell is arranged on one side of the connecting pipe, and water stop mechanisms are arranged in the first shell and the second shell. A water inlet is formed in one side of the first shell, an alarm mechanism is arranged on one side of the first shell, a water outlet is formed in one side of the second shell, and flanges are arranged on one side of the water inlet and one side of the water outlet. The backflow alarming secondary check valve is provided with the water stopping mechanism, the size of the valve body can be reduced under the condition that the flow is not changed through the water stopping mechanism, then the cost can be saved, the alarming mechanism is arranged, alarming can be conducted through the alarming mechanism during water leakage, then water leakage can be sensed in the first time, and water resources are saved; and the reliability of the equipment can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to two check valve technical field, concretely is a backflow alarm two check valve. BACKGROUND

[0002] Check valve is the closing piece for circular valve and acts by its own weight and medium pressure to block the medium backflow, belongs to automatic valve, also called check valve, one-way valve, backflow valve or isolation valve.

[0003] Through searching China patent, the utility model discloses a piston check valve in the utility model discloses a piston check valve, including check valve casing, check valve casing both ends are provided with water inlet flange and backwater flange respectively, the shell is provided with mounting bracket, piston shaft is horizontally slidably arranged on the mounting bracket, the piston shaft is provided with wedge-shaped water stop piston near water inlet flange one end, the backwater flange is provided with the limit frame at the inlet, the piston shaft other end horizontally slides through the limit frame, the piston shaft is provided with elastic reset piece near the backwater flange one end, the piston check valve has the advantages of check valve not jamming, higher sealing, long service life, but still has following disadvantages in actual use:

[0004] Water supply of water plant often encounters check valve leakage and cannot be known in time, causes water source huge waste, even appears the case that large pressure tank is pressed flat by atmospheric pressure, although the above patent prolongs the life, but the valve body volume is too big, and can not guarantee forever not bad, has the shaft guide and needs to be equipped with support (will cause big volume, high cost, and influence flow);Once water stop fails, cannot perceive in time, and cost is high, cannot alarm, production is complicated, influence flow, therefore, a backflow alarm two check valve is needed to improve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving at least one of the technical defects.

[0006] Therefore, one purpose of the utility model is to provide a backflow alarm two check valve to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0007] In order to achieve the above purpose, an embodiment of the utility model provides a backflow alarm two check valve, which comprises a first shell, a connecting pipe is arranged on one side of the first shell, a second shell is arranged on one side of the connecting pipe, a water stop mechanism is arranged in the first shell and the second shell, a water inlet is arranged on one side of the first shell, an alarm mechanism is arranged on one side of the first shell, a water outlet is arranged on one side of the second shell, and a flange is arranged on one side of the water inlet and the water outlet.

[0008] The utility model further sets up: the water stop mechanism includes the guide plate, one side of guide plate is provided with first spring, one side of first spring is provided with water stop piston.

[0009] By adopting the above technical scheme, the volume of the equipment can be reduced.

[0010] The utility model further sets up: one side of guide plate is provided with the deflector, one side of water stop piston is provided with the baffle, the deflector is connected with first spring fixedly, the inside diameter size of first spring is greater than the outside diameter size of baffle.

[0011] By adopting the above technical scheme, the water stop piston can be guided.

[0012] The utility model further sets up: water stop piston is compatible with the deflector, and water stop piston is connected with deflector slidingly, the outer surface of first shell and second shell is provided with screw thread docking interface.

[0013] By adopting the above technical scheme, the water stop piston can be moved.

[0014] The utility model further sets up: the alarm mechanism includes copper pipe, the inside of copper pipe is provided with spring support, one side of spring support is provided with second spring, one side of second spring is provided with magnetic force piston, the outer surface of copper pipe is provided with magnetic switch, one side of magnetic switch is provided with buzzer.

[0015] By adopting the above technical scheme, the alarm mechanism can alarm when water leaks.

[0016] The utility model further sets up: copper pipe is compatible with magnetic force piston, and magnetic force piston is connected with copper pipe slidingly.

[0017] By adopting the above technical scheme, the magnetic force piston can be moved.

[0018] In conclusion, the beneficial technical effects of the utility model are as follows:

[0019] 1. The backflow alarm two-stage check valve is provided with a water stop mechanism, which cancels the internal guide and changes it to an external guide, and the guide plate can guide the piston, thereby ensuring that the valve body volume is reduced under the condition that the flow rate remains unchanged, and thereby saving costs.

[0020] 2. The backflow alarm two-stage check valve is provided with an alarm mechanism, which can be pushed by the water flow, the magnetic force piston can drive the magnetic switch, thereby enabling the buzzer to alarm, the alarm mechanism can alarm when water leaks, thereby enabling the water leakage to be sensed in the first time, saving water resources, and thereby improving the reliability of the equipment.

[0021] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be more readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a structural schematic view of the present application;

[0024] Figure 2 is a structural schematic view of the first shell of the present application;

[0025] Figure 3 is a structural schematic view of the water stop mechanism of the present application;

[0026] Figure 4 is a structural schematic view of the deflector of the present application;

[0027] Figure 5 is a structural schematic view of the water stop piston of the present application;

[0028] Figure 6 is a structural schematic view of the second shell of the present application;

[0029] Figure 7 is a structural schematic view of the alarm mechanism of the present application.

[0030] In the drawing: 1, first shell; 2, connecting pipe; 3, second shell; 4, water stop mechanism; 5, water inlet; 6, alarm mechanism; 7, water outlet; 8, flange; 9, guide plate; 10, first spring; 11, water stop piston; 12, deflector; 13, baffle; 14, screw thread butt joint; 15, copper pipe; 16, spring support; 17, second spring; 18, magnetic piston; 19, magnetic switch; 20, buzzer. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Embodiment one

[0033] Reference Figure 1 With Figure 2The utility model discloses a kind of backflow alarm secondary check valve, including first shell 1, the side of first shell 1 is provided with connecting pipe 2, in the embodiment, connecting pipe 2 is fixedly connected with first shell 1, the side of connecting pipe 2 is provided with second shell 3, and is fixedly connected with connecting pipe 2, the inside of first shell 1 and second shell 3 is provided with water stop mechanism 4, can save cost, the side of first shell 1 is provided with water inlet 5, the side of first shell 1 is provided with alarm mechanism 6, can be alarmed when leaking, the side of second shell 3 is provided with water outlet 7, and the side of water inlet 5 and water outlet 7 is provided with flange 8.

[0034] Referring to Figures 1 to 6 , water stop mechanism 4 includes guide plate 9, in the embodiment, guide plate 9 is fixedly connected with first shell 1 and second shell 3, the side of guide plate 9 is provided with first spring 10, the side of first spring 10 is provided with water stop piston 11, and is fixedly connected with first spring 10, can reduce the volume of equipment, in turn can save cost, the side of guide plate 9 is provided with flow guide plate 12, and is fixedly connected with guide plate 9, the side of water stop piston 11 is provided with baffle 13, and is fixedly connected with water stop piston 11, can be positioned to first spring 10, flow guide plate 12 is fixedly connected with first spring 10, the inner diameter size of first spring 10 is greater than the outer diameter size of baffle 13, can be oriented to water stop piston 11, in turn can prevent water flow backflow under the condition of not affecting flow, in turn can reduce the volume of equipment, in turn can save cost, water stop piston 11 is matched with flow guide plate 12, and water stop piston 11 is slidably connected with flow guide plate 12, the outer surface of first shell 1 and second shell 3 is provided with screw thread docking interface 14, can make water stop piston 11 move, in turn can make water flow through.

[0035] Referring to Figure 1 、 Figure 2 With Figure 7 , alarm mechanism 6 includes copper pipe 15, in the embodiment, copper pipe 15 is fixedly connected with first shell 1, the inside of copper pipe 15 is provided with spring support 16, and is fixedly connected with copper pipe 15, the side of spring support 16 is provided with second spring 17, and is fixedly connected with spring support 16, the side of second spring 17 is provided with magnetic force piston 18, can move, the outer surface of copper pipe 15 is provided with magnetic switch 19, the side of magnetic switch 19 is provided with buzzer 20, can be alarmed when leaking, in turn can be perceived in first time when leaking, in turn can reduce waste, copper pipe 15 is matched with magnetic force piston 18, and magnetic force piston 18 is slidably connected with copper pipe 15, can make magnetic force piston 18 move, in turn can make buzzer 20 alarm, in turn can reduce waste.

[0036] The implementation principle of the embodiment is:

[0037] This backflow alarm two-stage check valve works as follows: When the device is working, water flows into the interior of the first housing 1 through the inlet 5. At this time, the water flow can push the stop piston 11 to move. Since the first spring 10 is fixedly connected to the guide plate 12, the stop piston 11 can squeeze the first spring 10, thereby compressing the first spring 10 and deforming it, allowing the water flow to enter the interior of the outlet 7. When backflow occurs, the water flows into the interior of the second housing 3 through the outlet 7. At this time, the first spring 10 returns to its original deformation, thereby pushing the stop piston 11 to move and sealing the inlet 5, thus preventing backflow of water.

[0038] Furthermore, when the water flows back into the first outer casing 1, it can enter the copper pipe 15. Since the water-stopping piston 11 can seal the first outer casing 1, the water pressure inside the copper pipe 15 can increase. When the water pressure is greater than the elastic force of the second spring 17, the water can push the magnetic piston 18 to move. The movement of the magnetic piston 18 can open the magnetic switch 19. The magnetic switch 19 can control the buzzer 20 to start the alarm, thus triggering an alarm when the water-stopping piston 11 fails, thereby improving the reliability of the equipment.

[0039] Compared with the prior art, the present invention has the following advantages:

[0040] 1. The backflow alarm two-stage check valve is equipped with a water-stopping mechanism 4. By eliminating the internal guide and replacing it with an external guide, the piston can be guided by the guide plate 9, thereby ensuring that the valve body volume is reduced while maintaining the same flow rate, thus saving costs.

[0041] 2. The backflow alarm two-stage check valve is equipped with an alarm mechanism 6. The water flow can push the force piston, the magnetic piston 18 can drive the magnetic switch 19, and then the buzzer 20 can sound an alarm. The alarm mechanism 6 can sound an alarm when there is a water leak, so as to detect the water leak at the first time, save water resources, and improve the reliability of the equipment.

[0042] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A backflow alarm two-stage check valve, characterized in that: The device includes a first outer shell (1), a connecting pipe (2) on one side of the first outer shell (1), a second outer shell (3) on one side of the connecting pipe (2), a water-stopping mechanism (4) inside both the first outer shell (1) and the second outer shell (3), a water inlet (5) on one side of the first outer shell (1), an alarm mechanism (6) on one side of the first outer shell (1), a water outlet (7) on one side of the second outer shell (3), and a flange (8) on one side of both the water inlet (5) and the water outlet (7).

2. The backflow alarm two-stage check valve according to claim 1, characterized in that: The water-stopping mechanism (4) includes a guide plate (9), a first spring (10) is provided on one side of the guide plate (9), and a water-stopping piston (11) is provided on one side of the first spring (10).

3. The backflow alarm two-stage check valve according to claim 2, characterized in that: A guide plate (12) is provided on one side of the guide plate (9), and a baffle (13) is provided on one side of the water-stopping piston (11). The guide plate (12) is fixedly connected to the first spring (10), and the inner diameter of the first spring (10) is larger than the outer diameter of the baffle (13).

4. A backflow alarm two-stage check valve according to claim 3, characterized in that: The water-stopping piston (11) is adapted to the guide plate (12), and the water-stopping piston (11) and the guide plate (12) are slidably connected. The outer surfaces of the first shell (1) and the second shell (3) are provided with threaded interfaces (14).

5. A backflow alarm two-stage check valve according to claim 1, characterized in that: The alarm mechanism (6) includes a copper tube (15), a spring bracket (16) is provided inside the copper tube (15), a second spring (17) is provided on one side of the spring bracket (16), a magnetic piston (18) is provided on one side of the second spring (17), a magnetic switch (19) is provided on the outer surface of the copper tube (15), and a buzzer (20) is provided on one side of the magnetic switch (19).

6. A backflow alarm two-stage check valve according to claim 5, characterized in that: The copper tube (15) is adapted to the magnetic piston (18), and the magnetic piston (18) is slidably connected to the copper tube (15).

Images