Geothermal pipe capable of reducing scale blockage
By installing inclined impurity filters, impurity collection devices, and diversion sub-pipes inside the geothermal pipes, the problem of easy blockage in geothermal pipes is solved, achieving effective collection of impurities and prevention of backflow, extending the cleaning cycle, and improving heating efficiency and pipe strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-03
AI Technical Summary
Geothermal pipes are prone to clogging due to scale buildup during use, which can hinder heat transfer. Existing technologies can only provide temporary relief through filtration devices and water temperature control, but these filtration devices are easily clogged and require frequent cleaning.
An inclined impurity filter screen and an impurity discharge pipe are installed inside the geothermal main pipe, and an impurity collection device is provided, including an impurity collection cylinder and an anti-backflow component. The funnel-shaped structure and flow guide block design of the anti-backflow component prevent impurities from flowing back. A flow guide sub-pipe is added to form a multi-channel water supply and reduce blockage.
It effectively reduces the accumulation of impurities in the filter screen and main pipe, extends the cleaning interval, maintains the heating effect, enhances the strength of the pipe, prevents local blockage, and improves heating efficiency.
Smart Images
Figure CN224080278U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of geothermal pipe technology, and in particular to a geothermal pipe that can reduce scale blockage. Background Technology
[0002] Geothermal pipes, also known as floor heating pipes, refer to a type of pipe used as a carrier for the circulation of low-temperature hot water in a low-temperature hot water radiant floor heating system (referred to as floor heating).
[0003] When geothermal pipes are in use, a large amount of low-temperature hot water circulates inside. During this circulation, impurities in the water adhere to the inner wall of the pipes, gradually reducing the cross-sectional area until blockage occurs. Experiments show that for every 1mm increase in pipe wall thickness, the indoor temperature drops by 6℃, severely hindering heat transfer.
[0004] To reduce clogging in geothermal pipes, existing technologies typically include a filter at the water inlet to prevent impurities from entering the pipes and to maintain the water temperature below 35°C to prevent calcium and magnesium ions from precipitating and forming scale at high temperatures (>60°C). After implementing these techniques, geothermal pipes generally require physical pulse cleaning or projectile cleaning every 2-3 years to remove residues from the pipe walls.
[0005] However, if the filter is placed directly at the end of the geothermal pipe, impurities can easily accumulate in the filter until it becomes clogged.
[0006] Therefore, this application proposes a geothermal pipe that can reduce scale buildup and alleviate the blockage of geothermal pipes. Utility Model Content
[0007] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a geothermal pipe that can reduce scale blockage, thereby solving the problem of easy blockage in geothermal pipes in the prior art.
[0008] To achieve the above and other related objectives, this utility model provides a geothermal pipe that can reduce scale blockage, including a geothermal main pipe. An inclined impurity filter screen is provided inside the water inlet of the geothermal main pipe, and an impurity discharge pipe is provided on the outer surface of the geothermal main pipe, which is parallel to the inclined surface of the impurity filter screen. The impurity discharge pipe is located on the water-facing side of the impurity filter screen, and the impurity discharge pipe is in communication with the interior of the geothermal main pipe.
[0009] An impurity collection device is provided at the end of the impurity discharge pipe, which is used to collect impurities.
[0010] Preferably, the impurity collection device includes an impurity collection cylinder, which is detachably installed at the end of the impurity discharge pipe;
[0011] The impurity collection cylinder is equipped with an impurity backflow prevention device inside.
[0012] Preferably, the impurity backflow prevention component is a cylindrical filter screen placed at the bottom of the impurity collection cylinder.
[0013] Preferably, the cylindrical cross-section of the impurity anti-backflow component is trumpet-shaped, the impurity anti-backflow component is inverted at the bottom of the impurity collection cylinder, and a gap is left between the outer surface of the impurity anti-backflow component and the inner wall of the impurity collection cylinder.
[0014] Preferably, the top of the impurity collection cylinder is provided with an opening, and a sealing cap is provided on the opening to seal the opening of the impurity collection cylinder;
[0015] The sealing cap can be removed from the opening of the impurity collection cylinder.
[0016] Preferably, a guide block is provided at the bottom axis of the sealing cover, and the guide block is coaxially arranged with the impurity anti-backflow component.
[0017] Preferably, the diameter of the end of the guide block facing the impurity anti-backflow component is smaller than that of the other end, and it is tapered.
[0018] Preferably, the geothermal main pipe is further provided with a flow guide tube, which is located on the other side of the water-facing side of the impurity filter screen.
[0019] Preferably, the flow guide tube and the interior of the geothermal main tube form several water supply channels, and the channels are interconnected.
[0020] As described above, the geothermal pipe of this invention, which can reduce scale buildup, has the following beneficial effects:
[0021] 1. This utility model provides an impurity filter screen that is inclined inside the geothermal main pipe and an impurity discharge pipe that is adapted to the inclined angle of the impurity filter screen on the outer surface of the geothermal main pipe. When low-temperature hot water is input, the impurity filter screen will block the impurities. The impurities blocked by the impurity filter screen will be impacted by the water flow and enter the impurity collection device along the inclined direction of the impurity filter screen to be collected. This achieves the effect of reducing the blockage of impurities in the impurity filter screen and the geothermal main pipe.
[0022] 2. This utility model provides an anti-backflow device for impurities inside the impurity collection cylinder, and the anti-backflow device is shaped like an inverted trumpet. When impurities enter the impurity collection cylinder, most of the impurities will be intercepted by the anti-backflow device, while the water will flow back to the geothermal main pipe through the anti-backflow device to participate in the circulation, thus achieving the effect of preventing impurities from flowing back.
[0023] 3. This utility model seals the opening of the impurity collection cylinder by setting a sealing cover on the top of the impurity collection cylinder. The impurities inside the impurity collection cylinder can be easily cleaned by removing the sealing cover.
[0024] Meanwhile, a guide block is set at the bottom of the sealing cover, and the guide block is a cone with a small diameter at the bottom. When water flows into the impurity collection cylinder, it will be guided into the impurity collection cylinder by the guide block, thereby improving the impurity anti-backflow component's interception effect on impurities.
[0025] 4. This utility model sets up a guide pipe inside the geothermal main pipe and forms several water flow channels between the guide pipe and the geothermal main pipe. When low-temperature hot water circulation is carried out, even if a local pipe is blocked, the overall heating effect can still be maintained through other branches.
[0026] Meanwhile, when laying geothermal pipes, the guide pipes can increase the strength of the main geothermal pipe and support the internal cross-section of the main geothermal pipe when it is bent, so as to avoid excessive deformation at the bend and cause internal blockage of the main geothermal pipe.
[0027] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. Attached Figure Description
[0028] Figure 1 The diagram shown is a structural schematic of this utility model.
[0029] Figure 2 The diagram shown is a cross-sectional view of the geothermal main pipe of this utility model.
[0030] Figure 3 The diagram shown is a cross-sectional view of the impurity collection device of this utility model.
[0031] Figure 4 The diagram shown is a cross-sectional view of the structure of the impurity backflow prevention component of this utility model.
[0032] Figure 5 The diagram shown is a structural schematic of the flow guide block of this utility model.
[0033] Component designation explanation:
[0034] 1. Geothermal main pipe; 2. Impurity filter screen; 3. Impurity discharge pipe; 4. Impurity collection device; 41. Impurity collection cylinder; 42. Impurity backflow prevention component; 43. Sealing cover; 44. Flow guide block; 5. Flow guide sub-pipe. Detailed Implementation
[0035] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.
[0036] Please see Figures 1 to 5 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.
[0037] like Figures 1-3 As shown, this utility model provides a geothermal pipe that can reduce scale buildup, including a geothermal main pipe 1, which is laid underground to circulate low-temperature hot water and provide heat radiation. During installation, the inlet at the end of the geothermal main pipe 1 is connected to a heating device, allowing low-temperature hot water to enter and circulate inside the geothermal main pipe 1. An inclined impurity filter screen 2 is installed inside the inlet of the geothermal main pipe 1. The impurity filter screen 2 filters impurities in the water flow, reducing the amount of impurities entering the geothermal main pipe 1. Simultaneously, the outer surface of the filter screen 2 is washed by the water flow due to its inclined design, reducing the adhesion of impurities and preventing blockage. An impurity discharge pipe 3, parallel to the inclined surface of the impurity filter screen 2, is installed on the outer surface of the geothermal main pipe 1, and is located on the water-facing side of the impurity filter screen 2, communicating with the interior of the geothermal main pipe 1. An impurity collection device 4 is installed at the end of the impurity discharge pipe 3. The intercepted and flushed impurities will flow along the impurity discharge pipe 3 to the impurity collection device 4 and be collected by the impurity collection device 4, so as to avoid the impurities from accumulating in the geothermal main pipe 1 and reducing the internal cross-section of the geothermal main pipe 1.
[0038] like Figure 3 and Figure 4 As shown, in some embodiments, the impurity collection device 4 of this utility model includes an impurity collection cylinder 41, and an impurity anti-backflow component 42 is provided inside the impurity collection cylinder 41. Impurities enter the interior of the impurity collection cylinder 41 with the water flow through the impurity discharge pipe 3. The water flow enters the circulation through the filter holes of the impurity anti-backflow component 42, while the impurities are blocked and retained inside the impurity collection cylinder 41 by the filter holes of the impurity anti-backflow component 42. The impurity collection cylinder 41 is detachably installed at the end of the impurity discharge pipe 3, and the interior of the impurity collection cylinder 41 can be easily cleaned by disassembling it.
[0039] like Figure 3 and Figure 4 As shown, in some embodiments, the impurity backflow prevention component 42 of this invention is a cylindrical filter screen placed at the bottom of the impurity collection cylinder 41. When water flows into the impurity collection cylinder 41, it enters through the middle of the impurity backflow prevention component 42. After encountering resistance, the water flows back along the wall of the impurity collection cylinder 41 from the side of the impurity backflow prevention component 42, thus isolating the impurities. This reduces the amount of impurities flowing into the impurity collection cylinder 41, slows down the clogging of the geothermal main pipe 1 by scale, and increases the cleaning interval.
[0040] like Figure 3 and Figure 4 As shown, in some embodiments, the cylindrical cross-section of the impurity backflow prevention component 42 of this invention is trumpet-shaped, and the impurity backflow prevention component 42 is inverted at the bottom of the impurity collection cylinder 41. A gap is left between the outer surface of the impurity backflow prevention component 42 and the inner wall of the impurity collection cylinder 41. When the water flow carries impurities into the impurity collection cylinder 41, the impurity backflow prevention component 42, whose inner diameter gradually decreases, will cause the impurities to concentrate in the middle. When the water flows back, because the cross-section of the impurity backflow prevention component 42 becomes smaller, most of the impurities will be trapped in the gap between the outer surface of the impurity backflow prevention component 42 and the inner wall of the impurity collection cylinder 41. At the same time, the inner wall of the trumpet-shaped impurity backflow prevention component 42 is inclined, and when the water flows through, it will wash the inner wall of the impurity backflow prevention component 42 at an angle. Under the impact force of the water flow, the impurities attached to the inside of the impurity backflow prevention component 42 will be peeled off, allowing the impurities to enter the outer surface of the impurity backflow prevention component 42.
[0041] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the top of the impurity collection cylinder 41 of this invention is provided with an opening, and a sealing cap 43 is provided on the opening to seal the opening of the impurity collection cylinder 41. The sealing cap 43 can be removed from the opening of the impurity collection cylinder 41. After the pipeline has been used for a period of time, the impurities in the impurity collection cylinder 41 can be easily cleaned by opening the sealing cap 43. Compared with only being able to disassemble the impurity collection cylinder 41 for cleaning, it is more convenient to clean the impurities located in the gap between the outer surface of the impurity anti-backflow component 42 and the inner wall of the impurity collection cylinder 41.
[0042] like Figure 3 and Figure 5As shown, in some embodiments, a guide block 44 is axially arranged at the bottom of the sealing cover 43 of this invention, and the guide block 44 is coaxially arranged with the impurity anti-backflow component 42. When water flows into the impurity collection cylinder 41 through the impurity anti-backflow component 42, the water will come into contact with the guide block 44, thereby causing the water to flow towards the inner wall of the impurity collection cylinder 41 through the obstruction of the guide block 44. This is used to guide the water flow, so that impurities can be more easily intercepted.
[0043] like Figure 5 As shown, in some embodiments, the diameter of one end of the flow guide block 44 facing the impurity anti-backflow component 42 is smaller than that of the other end, which is tapered. When the water flow comes into contact with the flow guide block 44, the water flow will flow along the outer surface of the flow guide block 44 because the flow guide block 44 is tapered, thereby allowing the water flow to enter better from the middle of the impurity anti-backflow component 42 and flow out from the side of the impurity anti-backflow component 42, improving the interception effect of impurities.
[0044] like Figure 1 and Figure 2 As shown in some embodiments, the geothermal main pipe 1 of this invention is further provided with a diversion sub-pipe 5, which is located on the opposite side of the water-facing surface of the impurity filter screen 2. After the water flows through the impurity filter screen 2, it is diverted by the diversion sub-pipe 5, thereby forming multiple water flows delivered simultaneously. Even if a part of the pipe is blocked, the overall heating effect can still be maintained through other branches.
[0045] like Figure 1 As shown, in some embodiments, the present invention forms several water supply channels between the internal structure of the guide tube 5 and the geothermal main pipe 1, and these channels are interconnected. This further enhances the branch circuit for water circulation and improves the anti-clogging effect. Even if a partial blockage occurs in the pipe, water can still circulate through the interconnected holes between the channels to maintain overall heating. Simultaneously, when the geothermal main pipe 1 is bent, it provides internal support, preventing excessive flattening at the bend and thus ensuring smooth water flow. The inner wall of the geothermal main pipe 1 and the surface of the guide tube 5 are both made smooth to reduce the adhesion of impurities and slow down the accumulation of scale.
[0046] In summary, the geothermal pipe of this invention, which can reduce scale blockage, achieves this by installing an impurity filter screen 2 at an angle inside the geothermal main pipe 1 and installing an impurity discharge pipe 3 on the outer surface of the geothermal main pipe 1 with an angle adapted to the impurity filter screen 2. When low-temperature hot water is input, the impurity filter screen 2 will block the impurities, and the impurities blocked by the impurity filter screen 2 will be impacted by the water flow and enter the impurity collection device 4 along the inclined direction of the impurity filter screen 2 for collection. This achieves the effect of reducing impurity blockage of the impurity filter screen 2 and the geothermal main pipe 1.
[0047] This invention provides an anti-backflow device 42 for impurities inside the impurity collection cylinder 41, and the anti-backflow device 42 is shaped like an inverted trumpet. When impurities enter the impurity collection cylinder 41, most of the impurities will be intercepted by the anti-backflow device 42, while the water will flow back to the geothermal main pipe 1 through the anti-backflow device 42 to participate in the circulation, thus achieving the effect of preventing impurities from flowing back.
[0048] This invention seals the opening of the impurity collection cylinder 41 by providing a sealing cover 43 at the top of the impurity collection cylinder 41. The impurities inside the impurity collection cylinder 41 can be easily cleaned by removing the sealing cover 43.
[0049] Meanwhile, a guide block 44 is provided at the bottom of the sealing cover 43, and the guide block 44 is a cone with a small diameter at the bottom. When water flows into the impurity collection cylinder 41, it will be guided into the impurity collection cylinder 41 by the guide block 44, thereby improving the impurity anti-backflow component 42's interception effect on impurities.
[0050] This invention provides a diversion sub-pipe 5 inside the geothermal main pipe 1, forming several water flow channels between the diversion sub-pipe 5 and the geothermal main pipe 1. During low-temperature hot water circulation, even if a local pipe is blocked, the overall heating effect can still be maintained through other branch lines.
[0051] Meanwhile, when laying geothermal pipes, the guide pipe 5 can increase the strength of the geothermal main pipe 1, and can support the internal cross section of the geothermal main pipe 1 when it is bent, so as to avoid excessive deformation at the bend and cause internal blockage of the geothermal main pipe 1.
[0052] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.
[0053] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A geothermal pipe capable of reducing scale blockage, characterized by, The geothermal main pipe (1) is internally provided with an inclined impurity filter screen (2) at the water inlet, the outer surface of the geothermal main pipe (1) is provided with an impurity discharge pipe (3) parallel to the inclined surface of the impurity filter screen (2), and the impurity discharge pipe (3) is located at the water-facing side of the impurity filter screen (2), the impurity discharge pipe (3) penetrates the interior of the geothermal main pipe (1); The end of the impurity discharge pipe (3) is provided with an impurity collecting device (4) for collecting impurities.
2. The geothermal pipe capable of reducing scale blockage according to claim 1, characterized in that: The impurity collecting device (4) comprises an impurity collecting cylinder (41) which is detachably installed at the end of the impurity discharge pipe (3). The interior of the impurity collecting cylinder (41) is provided with an impurity anti-backflow piece (42).
3. The geothermal pipe capable of reducing scale blockage of claim 2, wherein: The impurity anti-backflow piece (42) is a cylindrical filter screen placed at the inner bottom of the impurity collecting cylinder (41).
4. The geothermal pipe capable of reducing scale blockage according to claim 3, characterized in that: The cylindrical cross section of the impurity anti-backflow piece (42) is trumpet-shaped, the impurity anti-backflow piece (42) is inverted at the inner bottom of the impurity collecting cylinder (41), and a gap is left between the outer surface of the impurity anti-backflow piece (42) and the inner wall of the impurity collecting cylinder (41).
5. The geothermal pipe capable of reducing scale blockage of claim 3, wherein: The top of the impurity collecting cylinder (41) is provided with an opening, and a sealing cover (43) is arranged on the opening to seal the opening of the impurity collecting cylinder (41). The sealing cover (43) can be detached from the opening of the impurity collecting cylinder (41).
6. The geothermal pipe capable of reducing scale blockage of claim 5, wherein: The bottom of the sealing cover (43) is provided with a flow guide block (44) coaxial with the impurity anti-backflow piece (42).
7. The geothermal tube capable of reducing scale blockage of claim 6, wherein: The diameter of one end of the flow guide block (44) facing the impurity anti-backflow piece (42) is smaller than the other end which is tapered.
8. The geothermal pipe capable of reducing scale blockage according to any one of claims 1-7, characterized in that: The interior of the geothermal main pipe (1) is also provided with a flow guide sub-pipe (5) located at the other side of the water-facing surface of the impurity filter screen (2).
9. The geothermal pipe capable of reducing scale blockage of claim 8, wherein: The flow guide sub-pipe (5) and the interior of the geothermal main pipe (1) form several water flow channels, and the several channels are interconnected.