CN211177532U

CN211177532U - Pump valve group

Info

Publication number: CN211177532U
Application number: CN201922041039.9U
Authority: CN
Inventors: 李晓光; 王国峰; 袁振红; 李社红; 其他发明人请求不公开姓名
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-24
Filing date: 2019-11-24
Publication date: 2020-08-04
Anticipated expiration: 2029-11-24

Abstract

The utility model discloses a pump valve group, which comprises a high-grade water inlet, a medium-grade supply and return dual-purpose port, a low-grade return port, a tail-end water supply port, a tail-end return port, a first three-way valve, a second three-way valve and a tail-end circulating pump; the water flow is switched through the two three-way valve interfaces, and the high-grade and low-grade heat exchange circulation without mixed water of the two circulation loops is completed under the driving of the tail-end circulating pump, so that the water circulation heat exchanger is simple and reliable, is particularly suitable for the field of air conditioners which are used in a stepped manner with heat energy, and achieves the purposes of energy conservation and comfort.

Description

Pump valve group

Technical Field

The utility model belongs to the technical field of indirect heating equipment, concretely relates to pump valve group.

Background

The central air-conditioning water system in the prior art is divided into three types of two-pipe system, three-pipe system and four-pipe system, wherein the two-pipe system supplies hot water in winter and supplies cold water in summer, and one type of medium water with one temperature is conveyed in the same pipeline, although the system is simple, when the requirements of different areas, different time periods and large load change in the system are met, the cascade utilization of energy sources cannot be realized, and the energy consumption of the system is very large; although the existing three-pipe system is respectively provided with two water supply pipelines with different temperatures, the energy loss of backwater mixing at different temperatures can be caused by the backwater sharing one pipeline, and the operation efficiency is low; the water supply and return pipes of the four-pipe system at different temperatures are separately arranged to form two independent systems at different temperatures, so that the four-pipe system is convenient to adjust, can adapt to various changing conditions of room load, and does not have the problem of return water mixing energy loss, but the four-pipe system is complex in pipeline system, high in initial investment, difficult to realize gradient utilization of energy and high in energy consumption; the utility model discloses a three-pipe system central air conditioning water system that energy step utilized that chinese patent application 2018102987374 that has submitted has simply realized not having three-pipe system air conditioner hydrologic cycle of muddy water, because the circulating water between source end and the end is great to, the coupling relation degree of parameter changes such as pressure, temperature, and system hydraulic balance control technical requirement is higher in the actual motion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pump valving realizes not having the circulation and the switching of three control air conditioning water system high-grade, the two return circuits of low-grade of muddy water.

The utility model discloses technical scheme:

the utility model provides a pump valve group, which comprises a high-grade water inlet, a medium-grade dual-purpose supply and return port, a low-grade return port, a tail end water supply port, a tail end return port, a first three-way valve, a second three-way valve and a tail end circulating pump; the high-grade water inlet is communicated with a first interface of the first three-way valve, the medium-grade return double-purpose port is communicated with a second interface of the first three-way valve and a first interface of the second three-way valve, the low-grade return water port is communicated with a second interface of the second three-way valve, a water inlet of the tail-end circulating pump is communicated with a third interface of the first three-way valve, a water outlet of the tail-end circulating pump is communicated with a tail-end water supply port, and the tail-end return water port is communicated with a third interface of the second three-.

The pump valve group further comprises a filter, and the filter is arranged between a water inlet of the tail-end circulating pump and a third interface of the first three-way valve.

The tail end circulating pump is a variable flow pump.

The utility model discloses beneficial effect:

the utility model provides a pair of pump valve group adopts the pump valve group that two three-way valves and end circulating pump constitute, accomplishes high-grade, two circulation circuit of low-grade and does not have rivers switching control and the circulation drive of muddy water, and is simple reliable.

Description of the drawings:

fig. 1 is a schematic structural diagram of an embodiment of a pump valve assembly according to the present invention;

reference numerals:

1. a high grade water inlet; 2. a medium grade supply and return dual-purpose port; 3. a low-grade water return port; 4. a terminal water supply port; 5. a tail end water return port; 61. a first three-way valve; 611. a first three-way valve first port; 612. a first three-way valve second port; 613. a third port of the first three-way valve; 62. a second three-way valve; 621. a second three-way valve first port; 622. a second port of the second three-way valve; 623. a third port of the second three-way valve; 7. a tail end circulating pump; 8. and (3) a filter.

The specific implementation mode is as follows: the following is a further description of the specific embodiments of the present invention.

The terms used in this embodiment are to be interpreted: the expression of high grade, medium grade and low grade refers to the naming of water with different temperatures in the circulating system; wherein, in the working condition of heat supply, water with higher temperature is called high-grade water, water with moderate temperature is called medium-grade water, and water with lower temperature is called low-grade water; in the refrigeration working condition, water with lower temperature is called high-grade water, water with moderate temperature is called medium-grade water, and water with higher temperature is called low-grade water.

The utility model relates to a pump valve group embodiment is shown in figure 1: including high-grade water inlet (1), medium-grade supplies back double-purpose mouth (2), low-grade return water mouth (3), terminal water supply mouth (4), terminal return water mouth (5), first three-way valve (61), first three-way valve first interface (611), first three-way valve second interface (612), first three-way valve third interface (613), second three-way valve (62), first interface (621) of second three-way valve, second three-way valve second interface (622), second three-way valve third interface (623), terminal circulating pump (7), filter (8).

In this embodiment, the high-grade water inlet (1) communicates with the first interface (611) of the first three-way valve, the medium-grade supply return dual-purpose port communicates with the second interface (612) of the first three-way valve and the first interface (621) of the second three-way valve simultaneously, the low-grade return water port (3) communicates with the second interface (622) of the second three-way valve, the water inlet of the end circulating pump (7) communicates with the third interface (613) of the first three-way valve through the filter (8), the water outlet of the end circulating pump (7) communicates with the end water supply port (4), and the end return water port (5) communicates with the third interface (623) of the second three-way valve.

In the embodiment, the on-off states of the water flows of the interfaces of the first three-way valve (61) and the second three-way valve (62) are respectively switched, so that the temperature of circulating water between the tail end water supply port (4) and the tail end water return port (5) can be changed on the premise that water with different temperatures, such as high, medium and low, is not mixed, the individualized requirements of a heat exchange tail end user are met, and the purposes of comfort and energy conservation are achieved.

The present embodiment can switch three control modes as follows:

in the high-grade circulation mode, a first connector (611) of the first three-way valve is communicated with a third connector (613) of the first three-way valve, and a second connector (612) of the first three-way valve is in a disconnected state; the first connector (621) of the second three-way valve is communicated with the third connector (623) of the second three-way valve, and the second connector (622) of the second three-way valve is in a disconnected state; the tail-end circulating pump (7) drives high-grade water to circularly flow along a high-grade water inlet (1), a first interface (611) of a first three-way valve, a third interface (613) of the first three-way valve, a filter (8), the tail-end circulating pump (7), a tail-end water supply port (4), a user heat exchange tail end, a tail-end water return port (5), a third interface (623) of a second three-way valve, a first interface (621) of the second three-way valve and a middle-grade water return dual-purpose port (2).

When in the medium grade circulation mode, a first connector (611) of the first three-way valve is in a disconnected state, and a third connector (613) of the first three-way valve is communicated with a second connector (612) of the first three-way valve; the first connector (621) of the second three-way valve is in a disconnected state, and the third connector (623) of the second three-way valve is communicated with the second connector (622) of the second three-way valve; the tail-end circulating pump (7) drives medium-grade water to flow circularly along the medium-grade supply return double-purpose port (2), the first three-way valve second interface (612), the first three-way valve third interface (613), the filter (8), the tail-end circulating pump (7), the tail-end water supply port (4), the user heat exchange tail end, the tail-end water return port (5), the second three-way valve third interface (623), the second three-way valve second interface (622) and the low-grade water return port (3).

When in the large temperature difference circulation mode, a first interface (611) of the first three-way valve is communicated with a third interface (613) of the first three-way valve, and a second interface (612) of the first three-way valve is in a disconnected state; the first connector (621) of the second three-way valve is in a disconnected state, and the third connector (623) of the second three-way valve is communicated with the second connector (622) of the second three-way valve; the tail-end circulating pump (7) drives high-grade water to circularly flow along a high-grade water inlet (1), a first three-way valve first interface (611), a first three-way valve third interface (613), a filter (8), a tail-end circulating pump (7), a tail-end water supply port (4), a user heat exchange tail end, a tail-end water return port (5), a second three-way valve third interface (623), a second three-way valve second interface (622) and a low-grade water return port (3).

And in a circulation stop mode, the first interface (611) of the first three-way valve is in a disconnected state, the first interface (621) of the second three-way valve is in a disconnected state, the tail-end circulating pump (7) stops running, and water passing through the tail-end water supply port (4), the heat exchange tail end of a user and the tail-end water return port (5) stops circulating and stops releasing cold (heat).

In the embodiment, the tail end circulating pump (7) is preferably a variable speed variable flow pump so as to achieve accurate water flow control at the heat exchange tail end of a user.

Claims

1. A pump valve group comprises a high-grade water inlet, a medium-grade supply and return dual-purpose port, a low-grade return port, a tail end water supply port and a tail end return port, and is characterized by further comprising a first three-way valve, a second three-way valve and a tail end circulating pump; the high-grade water inlet is communicated with a first interface of the first three-way valve, the medium-grade return double-purpose port is communicated with a second interface of the first three-way valve and a first interface of the second three-way valve, the low-grade return water port is communicated with a second interface of the second three-way valve, a water inlet of the tail-end circulating pump is communicated with a third interface of the first three-way valve, a water outlet of the tail-end circulating pump is communicated with a tail-end water supply port, and the tail-end return water port is communicated with a third interface of the second three-.

2. The pump valve train of claim 1, further comprising a filter disposed between the water inlet of the end circulation pump and the third port of the first three-way valve.

3. Pump valve group according to any of claims 1-2, characterized in that the end circulation pump is a variable flow pump.