Floor heating coupling pump

By introducing a rubber plug and a limiting disc assembly into the underfloor heating coupling pump to prevent water backflow, the problem of water backflow damaging the wall-mounted fireplace is solved. Furthermore, the disassembly and assembly of the mixing tank is simplified through a button and ball-locking structure, thereby improving the stability and ease of maintenance of the underfloor heating system.

CN223869302UActive Publication Date: 2026-02-03BEIJING GUOSHENG CREATIVE CONSTRUCTION ENGINEERING CO LTD
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Patent Information

Application Number
CN202520509482.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-02-03
Estimated Expiration
2035-03-21

AI Technical Summary

Technical Problem

In existing underfloor heating coupling pumps, water backflow can damage the wall-mounted fireplace heat exchanger, affecting its service life and increasing maintenance costs.

Method used

The water flow is unidirectional, preventing backflow, by using a rubber stopper and a limiting disc assembly; the mixing tank is easy to assemble and disassemble via a button and ball-locking mechanism, facilitating maintenance.

Benefits of technology

It effectively prevents water backflow, extends the service life of the fireplace, simplifies the disassembly and assembly process of the mixing tank, and reduces maintenance costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of floor heating, and discloses a floor heating coupling pump which comprises a fixing frame, a circulating pump is fixedly connected to the top of the fixing frame, a water mixing tank is arranged at the top of the fixing frame, a connecting pipe is arranged on the outer wall of the water mixing tank, the outer wall of the connecting pipe is arranged at one end of the circulating pump, a water inlet pipe is arranged on one side of the water mixing tank, and a water outlet pipe is arranged on the other side of the water mixing tank. A water inlet pipe is arranged in the water mixing tank, a limiting assembly is arranged in the water inlet pipe, a dismounting assembly is fixedly connected to the outer wall of the water mixing tank, the limiting assembly comprises a fixing pipe, the fixing pipe is arranged in the water inlet pipe, a water inlet is formed in the water inlet pipe, and fixing blocks in an annular array are fixedly connected to the interior of the water inlet pipe. According to the wall-hung fireplace, the limiting disc and the connecting column are driven by water flow, and the rubber plug slides in the water inlet in cooperation with the first spring, so that one-way flowing of the water flow is kept, backflow of the water flow is prevented, the problem that the wall-hung fireplace is damaged due to backflow of the water flow is solved, and the service life of the wall-hung fireplace is prolonged.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of floor heating, especially floor heating coupling pump. BACKGROUND

[0002] With the improvement of people's living standards, the comfort requirement of living environment is also increasing, and floor heating as an efficient and comfortable heating method has been widely used in modern buildings. As a key component in the floor heating system, the performance of the floor heating coupling pump directly affects the operation efficiency and stability of the entire heating system. It is mainly used to balance the pressure between different heating circuits to ensure that hot water is evenly distributed to each area, achieving efficient heating. In the heating system of various residential, commercial and public facilities, the floor heating coupling pump plays an indispensable role, and its continuous development and optimization are of great significance to improve the heating quality and save energy.

[0003] Currently, in the common floor heating coupling pump technology, the water flow control part mostly adopts the traditional valve structure. For example, the stop valve, which realizes the on-off control of water flow by moving the valve along the axial direction of the valve seat. This way has a relatively simple structure, but has certain limitations in the flexibility and accuracy of adjusting water flow. There is also a butterfly valve, which relies on rotating a circular butterfly plate to change the water flow passage area to adjust the flow. In terms of connecting components, for components such as water mixing tanks, welding or conventional threaded connection methods are usually used. Although welding connection can ensure high sealing and connection strength, once a problem occurs, it is extremely difficult to repair and replace parts. Threaded connection needs to be operated with tools such as wrenches, and is prone to looseness due to factors such as vibration, thermal expansion and contraction after long-term use.

[0004] However, there is a prominent problem in the prior art. In the actual operation process of the floor heating system, due to various factors such as unstable system pressure, pressure fluctuations caused by the start and stop of the circulating pump, and the like, water flow backflow occurs from time to time. When the water flow backflows, it will have a serious negative impact on the wall-hung stove. The heat exchanger inside the wall-hung stove is a key component for heat transfer, and the backflow of cold water will suddenly impact the heat exchanger, causing its temperature to change instantaneously and generating a large thermal stress. The repeated action of this thermal stress will cause the metal material of the heat exchanger to gradually fatigue, resulting in damage such as cracks and corrosion, thereby seriously affecting the normal operation of the wall-hung stove, greatly shortening its service life, and bringing high repair and replacement costs to users, and therefore the floor heating coupling pump is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a floor heating coupling pump, which aims to improve the problem of water flow backflow causing damage to the wall-hung stove in the prior art.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] The ground heating coupling pump, including fixed frame, the fixed frame top fixedly connected with circulating pump, the fixed frame top is provided with water mixing tank, the water mixing tank outer wall is provided with connecting pipe, the connecting pipe outer wall sets up in circulating pump one end, water inlet pipe is provided on one side of water mixing tank, the water inlet pipe inside is provided with limit component, the water mixing tank outer wall is fixedly connected with dismounting assembly;

[0008] The limit component includes fixed pipe, the fixed pipe is arranged in the water inlet pipe, the water inlet pipe is provided with water inlet, the water inlet pipe is fixedly connected with the fixed block of annular array, the fixed block is fixedly connected in the fixed pipe outer wall, the fixed pipe is slidably connected with the limit disc, the fixed pipe is provided with spring one, one end of spring one is fixedly connected in the fixed pipe, the other end of spring one is fixedly connected in the limit disc outer wall, the limit disc other end is fixedly connected with connecting column, the connecting column outer wall is slidably connected in the fixed pipe, the other end of connecting column is fixedly connected with rubber plug, the rubber plug outer wall is slidably connected in the water inlet inside;

[0009] As a further description of the above technical scheme:

[0010] The dismounting assembly includes connecting plate, the connecting plate inner wall is fixedly connected in the water mixing tank outer wall;

[0011] As a further description of the above technical scheme:

[0012] The water mixing tank is fixedly connected with fixed shell, and the fixed shell outer wall is slidably connected in the fixed frame inside;

[0013] As a further description of the above technical scheme:

[0014] The fixed shell is provided with a moving groove in the inside, a fixed ring is fixedly connected in the inside of the fixed shell, and a pressing plate is fixedly connected to the outer wall of the fixed shell.

[0015] As a further description of the above technical scheme:

[0016] The fixed shell is slidably connected with a button in the inside, and the bottom of the button is fixedly connected with a sliding column.

[0017] As a further description of the above technical scheme:

[0018] The bottom of the sliding column is fixedly connected with a tapered block, and the tapered block outer wall is slidably connected in the fixed shell inside.

[0019] As a further description of the above technical scheme:

[0020] The outer wall of the slide post is sleeved with a spring two, the top of the spring two is fixedly connected to the bottom of the button, and the bottom of the spring two is fixedly connected to the top of the fixed ring.

[0021] Further description of the above technical solution:

[0022] The outer wall of the conical block is provided with a clamping ball, and the outer wall of the clamping ball is slidably connected in the moving groove.

[0023] The utility model has the advantages of the following beneficial effects:

[0024] 1、the utility model discloses a rubber plug realizes its lifting function through water flow drive, when water flow drive, realizes the sliding of rubber plug in the water inlet through the drive of water flow to limiting disc, connecting column and cooperation spring one, thereby keeping the unidirectional flow of water flow, preventing its backflow, solving the problem of damage to the wall-mounted stove caused by water backflow, and improving the service life of the device.

[0025] 2、the utility model discloses a clamping ball realizes its moving function through the button, when the button is pressed, realizes the sliding of clamping ball in the fixed frame through the drive of button to connecting column, conical block and cooperation spring two, thereby conveniently disassembling and assembling the water mixing tank, facilitating its maintenance and replacement, solving the problem that a plurality of tools need to be used to disassemble and assemble the water mixing tank, and improving the convenience of disassembling and assembling the water mixing tank. DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic view of the floor heating coupling pump provided by the utility model;

[0027] Figure 2 It is a structural schematic view of the water inlet pipe inside the floor heating coupling pump provided by the utility model;

[0028] Figure 3 It is a structural schematic view of the fixed shell inside the floor heating coupling pump provided by the utility model.

[0029] LEGEND:

[0030] 1, fixed frame;2, circulating pump;3, connecting pipe;4, water mixing tank;5, water inlet pipe;6, connecting plate;7, fixed shell;8, fixed block;9, fixed pipe;10, spring one;11, limiting disc;12, connecting column;13, rubber plug;14, water inlet;15, clamping ball;16, conical block;17, spring two;18, press plate;19, button;20, slide post;21, fixed ring;22, moving groove. DETAILED DESCRIPTION

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a floor heating coupling pump, including a fixing frame 1. The fixing frame 1 is made of high-strength carbon steel and has undergone special anti-rust treatment. It is not only sturdy and durable, but also effectively resists the corrosion of humid environments, ensuring long-term stable support for other components. A circulation pump 2 is fixedly connected to the top of the fixing frame 1. The circulation pump 2 is the power core of the water circulation of the floor heating system. Its outer shell is made of high-quality engineering plastic, which has good insulation and corrosion resistance. Its internal impeller is made of stainless steel, which can stably drive the water flow circulation at high speed, ensuring the efficient operation of the underfloor heating system. The top of the fixed frame 1 is equipped with a mixing tank 4. The mixing tank 4 is a key component for mixing water flow at different temperatures. It is welded from stainless steel plates of moderate thickness, which not only ensures the strength of the tank body, but also has good corrosion resistance. The outer wall of the mixing tank 4 is equipped with a connecting pipe 3. The connecting pipe 3 is generally made of durable PPR pipe. This type of pipe has good flexibility and temperature resistance and can maintain stable physical properties within a certain temperature range. The outer wall of the connecting pipe 3 is located at one end of the circulation pump 2. The side of the mixing tank 4 is equipped with a water inlet pipe 5. The water inlet pipe 5 is equipped with a limiting component. The outer wall of the mixing tank 4 is fixedly connected with a disassembly component.

[0033] The limiting component includes a fixed tube 9, which is located inside the water inlet pipe 5. The water inlet pipe 5 has an inlet 14. A ring array of fixed blocks 8 is fixedly connected inside the water inlet pipe 5. The fixed blocks 8 are fixedly connected to the outer wall of the fixed tube 9. A limiting disc 11 is slidably connected inside the fixed tube 9. The limiting disc 11 is made of stainless steel and its surface is finely polished to make it slide more smoothly inside the fixed tube 9. A spring 10 is installed inside the fixed tube 9. One end of the spring 10 is fixedly connected inside the fixed tube 9, and the other end of the spring 10 is fixedly connected to the outer wall of the limiting disc 11. A connecting post 12 is fixedly connected to the other end of the limiting disc 11. The outer wall of the connecting post 12 is slidably connected inside the fixed tube 9. A rubber plug 13 is fixedly connected to the other end of the connecting post 12. The rubber plug 13 is made of water-resistant and heat-resistant rubber material. Its outer wall can slide flexibly inside the water inlet 14, playing a key role in controlling the unidirectional flow of water. The outer wall of the rubber plug 13 is slidably connected inside the water inlet 14.

[0034] Specifically, in the operation of a modern underfloor heating system, the circulation and control of water flow are crucial. When the underfloor heating is turned on, water first flows smoothly into the mixing tank 4 through the connecting pipe 3. At the same time, hot water heated in the fireplace also enters the mixing tank 4 through the inlet pipe 5. In the mixing tank 4, water of different temperatures is thoroughly mixed to achieve a suitable heating temperature. Afterward, the mixed warm water is discharged by the circulation pump 2 and delivered to the underfloor heating pipes to provide warmth to the room. It is worth mentioning that when the water flows through the fireplace, it generates a certain pushing force, which pushes the rubber stopper 13 to move inside the inlet 14. As the rubber stopper 13 moves, it also drives the connecting column 12 to move, which in turn causes the limiting disc 11 to slide inside the fixed pipe 9. During this process, the limiting disc 11 compresses the spring 10, allowing the water to flow smoothly. When the fireplace is not in use, the spring 10 will rebound, causing the rubber plug 13 to return to the inside of the water inlet 14, sealing it off and effectively preventing water backflow, thus avoiding damage to the fireplace.

[0035] Reference Figure 1 and Figure 3The assembly and disassembly components include a connecting plate 6, which is made of high-strength aluminum alloy, a material known for its light weight, high strength, and excellent corrosion resistance. Precision machining ensures a secure and reliable connection between the connecting plate 6 and the mixing tank 4 without adding excessive weight. The inner wall of the connecting plate 6 is fixedly connected to the outer wall of the mixing tank 4. A fixed outer shell 7 is fixedly connected inside the mixing tank 4, and its outer wall is slidably connected to the inside of the fixing frame 1. The fixed outer shell 7 has a moving groove 22, designed with high precision. Its inner wall is finely polished to ensure smooth operation of any components that slide within it. A fixed ring 21, made of stainless steel, is fixedly connected inside the fixed outer shell 7, providing excellent wear resistance and stability. It provides a stable base for the installation and movement of other components. A button plate 18 is fixedly connected to the outer wall of the fixed outer shell 7. The button plate 18 is the direct contact part for user operation and is made of non-slip, comfortable-to-the-touch engineering plastic. Its surface is also designed with a special texture to facilitate user application of force and can be easily operated even in humid environments. A button 19 is slidably connected inside the fixed housing 7. The button 19 is usually made of sturdy plastic, which has a certain strength and good insulation. A sliding column 20 is fixedly connected to the bottom of the button 19. A conical block 16 is fixedly connected to the bottom of the sliding column 20. The conical block 16 is also made of stainless steel and its surface has undergone special hardening treatment to enhance wear resistance. The outer wall of the conical block 16 is slidably connected inside the fixed housing 7. A second spring 17 is sleeved on the outer wall of the sliding column 20. The top of the second spring 17 is fixedly connected to the bottom of the button 19, and the bottom of the second spring 17 is fixedly connected to the top of the fixed ring 21. A retaining ball 15 is provided on the outer wall of the conical block 16. The retaining ball 15 is made of high-hardness alloy steel and its surface has undergone precision polishing to ensure smooth sliding inside the moving groove 22. The outer wall of the retaining ball 15 is slidably connected inside the moving groove 22.

[0036] Specifically, during the daily operation of the underfloor heating system, the mixing tank 4 works continuously for extended periods. As usage time increases, wear and tear or malfunctions are inevitable, requiring maintenance or replacement. In such cases, the operation is very convenient. Simply press button 19 using the push plate 18. The button 19, under pressure, causes the sliding column 20 to slide smoothly within the fixed ring 21. Next, the sliding column 20 further drives the conical block 16 to slide within the fixed housing 7. Simultaneously, button 19 compresses spring 17. With the coordinated action of these components, the retaining ball 15 can slide freely within the moving groove 22. This allows the mixing tank 4 to be easily removed from the top of the mounting bracket 1 for convenient maintenance and replacement. After maintenance is completed, put the mixing tank 4 back in its original position and release button 19. At this time, spring 2 17 will quickly rebound, causing the cone block 16 to move upward and accurately engage the locking ball 15, so that the locking ball 15 slides into the fixing bracket 1 and firmly fixes the mixing tank 4, ensuring that the underfloor heating system can continue to operate normally.

[0037] Working principle: When the underfloor heating is in use, water flows into the mixing tank 4 through the connecting pipe 3. Hot water from the fireplace enters the mixing tank 4 simultaneously through the inlet pipe 5 for mixing. The mixed warm water is then discharged by the circulation pump 2. When the water flows in the fireplace, it pushes the rubber stopper 13 to move inside the inlet 14. The rubber stopper 13 then moves the connecting column 12, which in turn moves the limiting disc 11 to slide inside the fixed pipe 9, compressing the spring 10 to allow the water to flow normally. When the fireplace is not in use, the spring 10 rebounds, causing the rubber stopper 13 to return to the inlet 14 to seal it, preventing water backflow from damaging the fireplace.

[0038] Additionally, when the mixing tank 4 has been used for an extended period, the button 19 can be pressed via the push plate 18. The button 19 then drives the sliding column 20 to slide inside the fixed ring 21, which in turn drives the conical block 16 to slide inside the fixed housing 7. The button 19 compresses the second spring 17, allowing the locking ball 15 to slide inside the moving groove 22. This allows the mixing tank 4 to be removed from the top of the mounting bracket 1 for maintenance and replacement. After that, it can be returned to its original position. Then, the button 19 can be released, and the spring 17 will rebound, causing the conical block 16 to move upward and engage the locking ball 15, allowing it to slide into the mounting bracket 1 for fixation.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floor heating coupling pump, including a mounting frame (1), characterized in that: A circulation pump (2) is fixedly connected to the top of the fixed frame (1), a mixing tank (4) is provided on the top of the fixed frame (1), a connecting pipe (3) is provided on the outer wall of the mixing tank (4), the outer wall of the connecting pipe (3) is provided at one end of the circulation pump (2), a water inlet pipe (5) is provided on one side of the mixing tank (4), a limiting component is provided inside the water inlet pipe (5), and a disassembly and assembly component is fixedly connected to the outer wall of the mixing tank (4). The limiting component includes a fixed tube (9) disposed inside the water inlet pipe (5), an inlet (14) being provided inside the water inlet pipe (5), a fixed block (8) in a ring array being fixedly connected inside the water inlet pipe (5), the fixed block (8) being fixedly connected inside the fixed tube (9) to the outer wall of the fixed tube (9), a limiting disc (11) being slidably connected inside the fixed tube (9), a spring (10) being provided inside the fixed tube (9), one end of the spring (10) being fixedly connected inside the fixed tube (9), the other end of the spring (10) being fixedly connected to the outer wall of the limiting disc (11), a connecting post (12) being fixedly connected to the other end of the limiting disc (11), the outer wall of the connecting post (12) being slidably connected to the inside of the fixed tube (9), and a rubber stopper (13) being fixedly connected to the other end of the connecting post (12), the outer wall of the rubber stopper (13) being slidably connected to the inside of the water inlet (14).

2. The underfloor heating coupling pump according to claim 1, characterized in that: The assembly / disassembly assembly includes a connecting plate (6), the inner wall of which is fixedly connected to the outer wall of the mixing tank (4).

3. The underfloor heating coupling pump according to claim 2, characterized in that: The mixing tank (4) is fixedly connected to a fixed outer shell (7), and the outer wall of the fixed outer shell (7) is slidably connected to the inside of the fixed frame (1).

4. The underfloor heating coupling pump according to claim 3, characterized in that: The fixed outer shell (7) has a movable groove (22) inside, a fixed ring (21) is fixedly connected inside the fixed outer shell (7), and a pressing plate (18) is fixedly connected to the outer wall of the fixed outer shell (7).

5. The underfloor heating coupling pump according to claim 4, characterized in that: A button (19) is slidably connected inside the fixed housing (7), and a sliding column (20) is fixedly connected to the bottom of the button (19).

6. The underfloor heating coupling pump according to claim 5, characterized in that: The bottom of the sliding column (20) is fixedly connected to a conical block (16), and the outer wall of the conical block (16) is slidably connected inside the fixed outer shell (7).

7. The underfloor heating coupling pump according to claim 6, characterized in that: The outer wall of the sliding column (20) is fitted with a second spring (17), the top of the second spring (17) is fixedly connected to the bottom of the button (19), and the bottom of the second spring (17) is fixedly connected to the top of the fixed ring (21).

8. The underfloor heating coupling pump according to claim 7, characterized in that: The outer wall of the conical block (16) is provided with a retaining ball (15), and the outer wall of the retaining ball (15) is slidably connected inside the moving groove (22).