Pre-building electric pump water mixing unit

Abstract

The utility model discloses a building front electric pump water mixing unit which comprises an electric pump water mixing unit body. The electric pump water mixing unit comprises a water supply pipeline, a water return pipeline arranged in parallel with the water supply pipeline, a communicating pipe communicated between the water supply pipeline and the water return pipeline, a shield pump communicated with the communicating pipe, a constant flow valve communicated with the communicating pipe, and an electric three-way water mixing valve for communicating the communicating pipe with the water supply pipeline; the electric three-way water mixing valve comprises a water mixing valve shell and an actuator arranged at the top end of the water mixing valve shell. Through the arrangement of the electric pump water mixing unit and the electric three-way water mixing valve, the conical pore plate is embedded on the valve seat on the high-temperature water inlet side in the valve and is matched with the conical adjusting needle, the small-flow high-temperature water supply flow of the heat exchange station can be effectively adjusted, after high-temperature water enters the water mixing valve, the flow area of the high-temperature water in the valve is only 50% of the pipe diameter of an inlet, and the flow rate of the high-temperature water in the valve is greatly improved. The flow area of the medium-temperature mixed water outlet is 100% of the pipe diameter, and the area of each flow channel in the valve is matched with the flow required by actual work.

Description

Technical Field

[0001] The utility model relates to the technical field of water mixing units, in particular to a water mixing unit with an electric pump in front of a building. Background Art

[0002] Since the mixing water system requires 50% of the high-temperature water volume of the heat exchange station in the non-mixing water system, there are two ways to adjust the flow of the heat exchange station with the existing mixing water technology. One is to install a smaller 2-way regulating valve on the water supply pipe of the mixing water unit to reliably adjust the high-temperature water flow, but it is necessary to add 2 reducers and a tee, which makes the volume of the mixing water unit too large; the second is to use an ordinary three-way regulating valve. The flow area of ​​the flow channel in the three directions of the ordinary three-way regulating valve is similar, which cannot meet the needs of small flow on the high-temperature water side of the heat exchange station, flow in the low-temperature return water of the pipe, and large flow of medium-temperature water after mixing. It is not suitable for mixing water regulation of the mixing water unit. Utility Model Content

[0003] Therefore, the purpose of the utility model is to provide an electric pump water mixing unit in front of a building. Through the electric pump water mixing unit and the electric three-way water mixing valve, a conical orifice plate is inlaid on the valve seat on the high-temperature water inlet side of the valve, and a conical adjusting needle is used to effectively adjust the small flow rate of high-temperature water supply in the heat exchange station. After the high-temperature water enters the water mixing valve, the flow area in the valve is only 50% of the inlet pipe diameter, and the flow area of ​​the medium-temperature mixed water outlet is 100% of the pipe diameter. The area of ​​each flow channel in the valve matches the flow required for actual work.

[0004] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: a front-of-building electric pump water mixing unit, comprising:

[0005] An electric pump water mixing unit, the electric pump water mixing unit comprising a water supply pipeline, a return pipeline arranged in parallel with the water supply pipeline, a connecting pipe connected between the water supply pipeline and the return pipeline, a shielded pump connected to the connecting pipe, a constant flow valve connected to the connecting pipe, and an electric three-way water mixing valve connecting the connecting pipe with the water supply pipeline;

[0006] The electric three-way water mixing valve comprises a water mixing valve housing, an actuator arranged at the top of the water mixing valve housing, an adjusting needle connected to the actuator, and a conical orifice plate arranged inside the water mixing valve housing.

[0007] As a preferred solution of the electric pump mixing water unit in front of a building described in the utility model, the electric three-way mixing water valve also includes a high-temperature water inlet opened at one end of the mixing water valve housing, a low-temperature water inlet opened at the other end of the mixing water valve housing, and a medium-temperature mixed water outlet opened at the bottom end of the mixing water valve housing.

[0008] As a preferred solution of the electric pump water mixing unit in front of a building described in the utility model, the conical orifice plate and the cast iron valve seat inside the water mixing valve housing are mutually inlaid;

[0009] Wherein, the diameter of the upper end of the conical orifice plate is greater than the diameter of the lower end of the conical orifice plate.

[0010] As a preferred solution of the electric pump water mixing unit in front of a building described in the utility model, the root of the regulating needle is arc-shaped, and the head of the regulating needle is conical;

[0011] The angle of the cone is the same as the angle of the conical orifice plate.

[0012] As a preferred solution of the electric pump water mixing unit in front of a building described in the utility model, the connecting pipe and the return water pipe are connected through a tee.

[0013] As a preferred solution of the electric pump water mixing unit in front of a building described in the utility model, the electric pump water mixing unit further includes a first stop valve connected to the water supply pipe and a second stop valve connected to the return pipe.

[0014] Compared with the prior art, the advantages of the utility model are:

[0015] By setting up an electric pump mixing unit and an electric three-way mixing valve, a conical orifice plate is inlaid on the valve seat on the high-temperature water inlet side of the valve, and in conjunction with a conical adjusting needle, the small flow rate of high-temperature water supply in the heat exchange station can be effectively adjusted. After the high-temperature water enters the mixing valve, the flow area in the valve is only 50% of the inlet pipe diameter, and the flow area of ​​the medium-temperature mixed water outlet is 100% of the pipe diameter. The area of ​​each flow channel in the valve matches the actual flow required for work.

[0016] In specific use, the mixing water unit is installed at the thermal inlet of the community heating building. The high-temperature water supply of the heat exchange station enters the water supply pipe of the unit through the water supply pipe. The water pump on the connecting pipe draws part of the low-temperature return water from the return pipe in the building and enters the electric three-way mixing valve to mix with the high-temperature water supply to form medium-temperature water supply. After entering the heat dissipation system in the building, low-temperature return water is formed. Part of the low-temperature return water returns to the heat exchange station for heating circulation, and part continues to be pumped by the water pump on the connecting pipe to the electric three-way mixing valve to mix with the high-temperature water supply. The constant flow valve on the connecting pipe has the function of constant water flow. The required amount of mixed water can be set according to the size of the building area. The adjusting needle of the electric three-way mixing valve is used to control the amount of high-temperature water entering the mixing unit of the heat exchange station and adjust the water temperature of the medium-temperature water after mixing. A conical orifice plate is inlaid on the valve seat on the high-temperature water inlet side of the valve, and in conjunction with the adjusting needle, it can effectively adjust the small flow of high-temperature water supply in the heat exchange station. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a structural diagram of the electric three-way water mixing valve of the utility model.

[0020] In the figure: 11, water supply pipe; 12, return pipe; 13, first stop valve; 14, second stop valve; 15, connecting pipe; 16, shielded pump; 17, constant flow valve; 18, electric three-way mixing valve; 21, high-temperature water inlet; 22, low-temperature water inlet; 23, medium-temperature mixed water outlet; 24, actuator; 25, adjusting needle; 26, tapered orifice plate; 27, mixing valve housing. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides an electric pump water mixing unit in front of a building. Through the electric pump water mixing unit and the electric three-way water mixing valve, a conical orifice plate is inlaid on the valve seat on the high-temperature water inlet side of the valve, and a conical regulating needle is used to effectively regulate the small flow rate of high-temperature water supply in the heat exchange station. After the high-temperature water enters the water mixing valve, the flow area in the valve is only 50% of the inlet pipe diameter, and the flow area of ​​the medium-temperature mixed water outlet is 100% of the pipe diameter. The area of ​​each flow channel in the valve matches the flow rate required for actual work.

[0026] Figure 1 , Figure 2 The overall structure diagram of an embodiment of a front-building electric pump water mixing unit of the utility model is shown. Figure 1 , Figure 2 The main structure of this embodiment is an electric pump water mixing unit, which includes a water supply pipe 11, a return pipe 12 arranged in parallel with the water supply pipe 11, a connecting pipe 15 connected between the water supply pipe 11 and the return pipe 12, a shielded pump 16 connected to the connecting pipe 15, a constant flow valve 17 connected to the connecting pipe 15, and an electric three-way water mixing valve 18 connecting the connecting pipe 15 with the water supply pipe 11;

[0027] The electric three-way water mixing valve 18 includes a water mixing valve housing 27, an actuator 24 disposed at the top of the water mixing valve housing 27, an adjustment needle 25 connected to the actuator 24, and a tapered orifice plate 26 disposed inside the water mixing valve housing 27;

[0028] The electric three-way mixing valve 18 further includes a high-temperature water inlet 21 provided at one end of the mixing valve housing 27, a low-temperature water inlet 22 provided at the other end of the mixing valve housing 27, and a medium-temperature mixed water outlet 23 provided at the bottom end of the mixing valve housing 27;

[0029] Working principle: The water mixing unit is installed at the thermal entrance of the community heating building. The high-temperature water supply of the heat exchange station enters the water supply pipe of the unit through the water supply pipe 11. The water pump on the connecting pipe 15 extracts part of the low-temperature return water from the return water pipe 12 in the building and enters the water supply pipe 11 of the unit. After mixing with the high-temperature water supply from the heat exchange station at the electric three-way mixing valve 18, it forms medium-temperature water supply. After entering the cooling system in the building for heat dissipation, low-temperature return water is formed. Part of the low-temperature return water returns to the heat exchange station for heating circulation, and part of it continues to be pumped to the water supply pipe 11 by the water pump on the connecting pipe 15 for mixing. The constant flow valve 17 on the through pipe 15 has the function of keeping a constant water flow rate. The required amount of mixed water can be set according to the size of the building area. The regulating needle 25 of the electric three-way mixing valve 18 is used to control the amount of high-temperature water entering the mixing unit of the heat exchange station and adjust the water temperature of the medium-temperature water after mixing. A conical orifice plate 26 is embedded on the valve seat on the high-temperature water inlet side of the valve, and in conjunction with the regulating needle 25, it can effectively adjust the small flow rate of high-temperature water supply in the heat exchange station. The first stop valve 13 and the second stop valve 14 respectively control the connectivity of the water supply pipe 11 and the return pipe 12.

[0030] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A front-of-building electric pump water mixing unit, characterized in that: include: An electric pump water mixing unit, the electric pump water mixing unit comprising a water supply pipeline (11), a return pipeline (12) arranged in parallel with the water supply pipeline (11), a connecting pipe (15) connected between the water supply pipeline (11) and the return pipeline (12), a shielded pump (16) connected to the connecting pipe (15), a constant flow valve (17) connected to the connecting pipe (15), and an electric three-way water mixing valve (18) connecting the connecting pipe (15) with the water supply pipeline (11); The electric three-way water mixing valve (18) comprises a water mixing valve housing (27), an actuator (24) arranged at the top end of the water mixing valve housing (27), an adjustment needle (25) connected to the actuator (24), and a conical orifice plate (26) arranged inside the water mixing valve housing (27).

2. The electric pump water mixing unit in front of a building according to claim 1, characterized in that: The electric three-way water mixing valve (18) further comprises a high-temperature water inlet (21) provided at one end of the water mixing valve housing (27), a low-temperature water inlet (22) provided at the other end of the water mixing valve housing (27), and a medium-temperature mixed water outlet (23) provided at the bottom end of the water mixing valve housing (27).

3. The electric pump water mixing unit in front of a building according to claim 2, characterized in that: The conical orifice plate (26) and the cast iron valve seat inside the water mixing valve housing (27) are embedded with each other; The upper end of the conical orifice plate (26) is directly larger than the diameter of the lower end of the conical orifice plate (26); the cross-sectional area of ​​the conical orifice plate (26) is 50% of the high-temperature water inlet (21) at one end of the mixing valve housing (27).

4. The electric pump water mixing unit in front of a building according to claim 3, characterized in that: The root of the adjusting needle (25) is in an arc shape, and the head of the adjusting needle (25) is in a cone shape; The angle of the cone is the same as the angle of the conical orifice plate (26).

5. The electric pump water mixing unit in front of a building according to claim 4, characterized in that: The connecting pipe (15) is connected to the return water pipe (12) via a tee.

6. The electric pump water mixing unit in front of a building according to claim 5, characterized in that: The electric pump water mixing unit also includes a first stop valve (13) connected to the water supply pipeline (11) and a second stop valve (14) connected to the water return pipeline (12).

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