Heating water returning and supplementing one-piece valve

Abstract

The utility model discloses a heating backwater and water replenishing integrated valve, and aims to solve the technical problems of how to replenish water to a household heating system to prevent backward flowing, non-rotor collection of heating backwater flow and the like. The heating water returning and supplementing one-piece valve comprises a water supplementing pipe and a heating water returning pipe, the water supplementing pipe and the heating water returning pipe are connected through a connecting pipe to form the one-piece valve, a one-way valve for preventing heating water from flowing backwards is arranged in the water supplementing pipe, an installation hole is formed in the pipe wall of the heating water returning pipe, and a flow signal switch is installed in the installation hole. The flow signal switch comprises a rotatable turning plate, a switch body and a magnetic reed switch, and a magnet is installed in the turning plate.

Description

Technical Field

[0001] The utility model relates to the technical field of valve body connection control, in particular to a heating return water and water replenishment one-piece valve. Background Art

[0002] At present, for the heating system of water heater heating, when it is necessary to replenish water to the heating system, a water replenishment valve is generally used for replenishment. When the water pressure of the heating system is too high, the traditional water replenishment valve often fails to replenish water, and the heating water flows back out of the water replenishment valve. In addition, the flow signal switch of the heating pipe water supply mainly relies on the water flow to drive the rotor with magnets to rotate, generate magnetic signals, and then generate water flow signals. It is not difficult to see that for this flow signal switch, regardless of whether there is liquid flowing in the pipeline, the rotor has a great influence on the liquid flow in the pipeline, that is, the rotor always hinders the normal liquid flow in the pipeline. How can it be sensed in real time whether there is liquid flowing in the pipeline, and this sensing device should minimize the impact on the normal flow of liquid in the pipeline.

[0003] Chinese utility model patent No. 201620458609.8 discloses a flow switch, in which a viscosity compensation device is arranged at the fluid inlet end of the cylinder, a permanent magnet is arranged behind the viscosity compensation device, and the viscosity compensation device supports the permanent magnet, a compression spring is arranged behind the permanent magnet, and the compression spring is against the joint at the flow outlet, and a magnetic needle is arranged on one side of the cylinder to cooperate with the permanent magnet and move on the pointer disk; a reed switch is arranged on the other side of the cylinder or above the cylinder, and the reed switch is connected to the electrical external joint circuit connected to the alarm circuit. The above-mentioned flow switch has a viscosity compensation device and a compression spring installed in the cylinder, which still has a certain impact on the normal circulation of the liquid in the pipeline. Utility Model Content

[0004] The utility model aims to provide a heating return water replenishment one-piece valve which can avoid backflow of heating replenishment water and has little influence on the normal circulation of liquid in the pipeline in view of the defects and shortcomings of the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a heating return water supply one-piece valve, including a supply pipe and a heating return pipe, the supply pipe and the heating return pipe are connected by a connecting pipe to form a one-piece valve, the one-piece valve is integrally connected to a water pump connecting pipe, the hot water of the heating system is circulated by the water pump, the supply pipe is built with a one-way valve to prevent the backflow of heating water, the supply pipe supplies water to the heating system in one direction through the one-way valve and prevents the backflow problem caused by the excessive water pressure of the heating system. The wall of the heating return pipe is provided with an installation hole, and the installation hole is provided with a flow signal switch. The flow signal switch includes a rotatable flap, a switch body and a reed switch, a magnet is installed in the flap, and the flip angle of the flap is controlled by the liquid flow in the heating return pipe to control whether the magnet in the flap is close to the reed switch, so as to achieve the opening and closing effect of the reed switch, thereby sensing the technical effect of whether there is liquid flow in the heating return pipe.

[0006] The rotatable flap moves away from the reed switch when no liquid flows through the heating return pipe. When liquid flows through the heating return pipe, the flowing liquid pushes the flap close to the reed switch, and the flow signal of the liquid in the heating return pipe is collected through the distance between the flap and the reed switch.

[0007] The one-way valve includes an upper valve body and a lower valve body which are interlocked with each other, a valve stem is installed between the upper valve body and the lower valve body, a sealing ring driven by the valve stem is arranged between the valve stem and the lower valve body, and a pressure spring is arranged between the valve stem and the upper valve body. When water flows into the water supply pipe, the valve stem is pushed open to supply water to the heating system. When water does not flow into the water supply pipe, the pressure spring drives the sealing ring driven by the valve stem to close the lower valve body to prevent water from backflowing into the heating system.

[0008] The water supply pipe is connected to the connecting pipe, the water tank connecting pipe, the safety valve interface, and the pressure switch interface through a one-way valve, thereby improving the multi-purpose performance of the water supply pipe.

[0009] The switch body is fixedly connected to the switch seat by bolts, a first sealing ring is arranged between the switch body and the switch seat, and the switch body is connected to the flap by a rotating shaft to improve the flexibility of the flap movement. The heating return pipe is connected to a pressure gauge interface to sense the pressure of the heating system in real time.

[0010] By adopting the above technical solution, the beneficial effects of the utility model are:

[0011] 1. The flip angle of the flap is controlled by the liquid flow in the heating return pipe to control whether the magnet in the flap is close to the reed switch to achieve the opening and closing effect of the reed switch, thereby sensing the technical effect of whether there is liquid flow in the heating return pipe.

[0012] 2. The water supply pipe is equipped with a one-way valve to prevent the backflow of heating water. The water supply pipe supplies water to the heating system in one direction through the one-way valve and prevents the backflow problem caused by excessive water pressure in the heating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] FIG1 is a schematic diagram of the three-dimensional structure of a heating return water supply valve of the utility model;

[0015] FIG2 is a right side structural schematic diagram of a heating return water replenishment one-piece valve according to the present invention;

[0016] Figure 3 is a schematic diagram of the utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0017] FIG4 is a schematic diagram of a top view of a heating return water replenishment one-piece valve according to the present invention;

[0018] Figure 5 is a schematic diagram of the utility model Figure 4 Schematic diagram of the cross-sectional structure at BB in the middle. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0020] like Figure 1-5 A heating return water replenishment one-piece valve is shown, comprising a replenishment pipe 8 and a heating return water pipe 6, the replenishment pipe 8 and the heating return water pipe 6 are connected by a connecting pipe 3 to form a one-piece valve, the one-piece valve is integrally connected with a water pump connecting pipe 7, the replenishment pipe 8 is equipped with a one-way valve to prevent the backflow of heating water, the one-way valve comprises an upper valve body 14 and a lower valve body 13 which are interlocked, a valve stem 10 is installed between the upper valve body 14 and the lower valve body 13, a sealing ring 12 driven by the valve stem is arranged between the valve stem 10 and the lower valve body 13, a pressure spring 11 is arranged between the valve stem 10 and the upper valve body 14, when water flows into the replenishment pipe, the valve stem is pushed open to replenish water to the heating system, when water does not flow into the replenishment pipe, the pressure spring drives the sealing ring driven by the valve stem to close the lower valve body to prevent the backflow of water from the heating system.

[0021] As a preferred structure, a mounting hole is opened in the wall of the heating return pipe 6, and a flow signal switch is installed in the mounting hole; the flow signal switch includes a rotatable flap 20, a switch body 5 and a reed switch 18, and a magnet 17 is installed in the flap 20. The rotatable flap 20 is away from the reed switch 18 when no liquid flows in the heating return pipe 6, and the flowing liquid pushes the flap 20 to approach the reed switch 18 when liquid flows in the heating return pipe 6. The heating return pipe 6 is connected to a pressure gauge interface 4

[0022] In order to improve the function of the water supply pipe, the water supply pipe 8 is connected to the connecting pipe 3, the water tank connecting pipe 1, the safety valve interface 2, and the pressure switch interface 9 through a one-way valve.

[0023] In order to improve the flexibility of the flow signal switch, the switch body 5 is fixedly connected to the switch seat 26 by bolts, a first sealing ring is provided between the switch body 5 and the switch seat 26 , and the switch body 5 and the flap 20 are connected by a rotating shaft 16 .

[0024] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A heating return water supply integrated valve, comprising a supply water pipe (8) and a heating return water pipe (6), characterized in that: The water supply pipe (8) and the heating return pipe (6) are connected via a connecting pipe (3) to form a conjoined valve, the conjoined valve being integrally connected to a water pump connecting pipe (7), the water supply pipe (8) being provided with a one-way valve for preventing backflow of heating water, the wall of the heating return pipe (6) being provided with a mounting hole, the mounting hole being provided with a flow signal switch; the flow signal switch comprising a rotatable flap (20), a switch body (5) and a reed switch (18), the flap (20) being provided with a magnet (17).

2. A heating return water replenishment valve according to claim 1, characterized in that: The rotatable flap (20) moves away from the reed switch (18) when no liquid flows through the heating return pipe (6); and when liquid flows through the heating return pipe (6), the flowing liquid pushes the flap (20) toward the reed switch (18).

3. A heating return water replenishment valve according to claim 1, characterized in that: The one-way valve comprises an upper valve body (14) and a lower valve body (13) which are interlocked with each other, a valve stem (10) is installed between the upper valve body (14) and the lower valve body (13), a sealing ring (12) driven by the valve stem is provided between the valve stem (10) and the lower valve body (13), and a pressure spring (11) is provided between the valve stem (10) and the upper valve body (14).

4. A heating return water replenishment one-piece valve according to claim 1, characterized in that: The water supply pipe (8) is connected to the connecting pipe (3), the water tank connecting pipe (1), the safety valve interface (2), and the pressure switch interface (9) via a one-way valve.

5. The heating return water replenishment one-piece valve according to claim 1, characterized in that: The switch body (5) is fixedly connected to the switch seat (26) by means of bolts, a first sealing ring is provided between the switch body (5) and the switch seat (26), and the switch body (5) and the flap (20) are connected by means of a rotating shaft (16).

6. The heating return water replenishment one-piece valve according to claim 1, characterized in that: The heating water return pipe (6) is connected to a pressure gauge interface (4).

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