A heating engineering pipe drainage device
By combining the lower and upper semicircular guard plates, and utilizing the design of limiting sliders, fixing rods, and springs, the inconvenience of maintenance for drainage devices in heating engineering pipelines is solved, achieving stable connection and convenient disassembly of the pipelines, and improving sealing performance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-14
AI Technical Summary
The existing heating project pipeline drainage devices are not easy to disassemble during maintenance, and the joints are prone to loosening and wear due to vibration, settlement and water flow impact.
The system employs a combination structure of a lower semicircular guard plate and an upper semicircular guard plate. Through the design of a limiting slider, a fixed plug rod, and a spring, it achieves a tight connection and axial positioning of the pipe flange. The insertion structure of the arc-shaped clamping plate and the sliding sleeve facilitates disassembly and maintenance.
Ensure the sealing and stability of pipe connections, prevent loosening and wear, extend service life, simplify maintenance processes, and reduce reliance on specialized equipment and manpower.
Smart Images

Figure CN224497974U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heating engineering, and in particular to a drainage device for heating engineering pipelines. Background Technology
[0002] An existing patent (publication number: CN112145808A) discloses a drainage pipe fixing device for drainage engineering, including a base plate, a support seat, an upper arc-shaped fixing plate, a lower arc-shaped fixing plate, and two triangular support frames. The support seat is welded and fixed to the upper middle position of the base plate. The two triangular support frames are symmetrically arranged on the base plate on both sides of the support seat. A first fixing hinge is welded to the upper position of the support seat. The lower arc-shaped fixing plate is hinged to the first fixing hinge. The upper arc-shaped fixing plate fits onto the lower arc-shaped fixing plate, forming a through hole for the drainage pipe to pass through. A flexible pad is provided on the inner wall of the through hole. A second fixing hinge is welded to the upper end of each of the two triangular support frames. An arc-shaped support plate is hinged to the second fixing hinge. A flexible pad is provided on the inner wall of the arc-shaped support plate. In this device, the upper arc-shaped fixing plate and the lower arc-shaped fixing plate are connected by bolts, which makes it inconvenient to remove the device from the pipe during subsequent maintenance of the pipe interface. Summary of the Invention
[0003] This utility model addresses the aforementioned shortcomings of the existing technology by providing a drainage device for heating engineering pipelines that is easy to disassemble for maintenance of the lower semi-circular guard plate and is convenient to install and remove.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A drainage device for a heating engineering pipeline includes a lower semi-circular guard plate, a drainage pipe, a fixed insert rod, a sliding sleeve, a limiting slider, a spring, a first sliding sleeve, a right fixed rod, a second sliding sleeve, and a positioning sleeve. The drainage pipe has a pipe flange on its side, adjacent pipe flanges are fitted together, and the pipe flange has multiple positioning holes. The pipe flange is adapted to the inner side of the lower semi-circular guard plate and is inserted into the lower semi-circular guard plate. The lower semi-circular guard plate has a lower guard plate limiting plate inside, the side of which is fitted with the pipe flange. A set of lower guard plate limiting plates are distributed inside the lower semi-circular guard plate. The lower semi-circular guard plate also has an arc-shaped retaining plate inside, and a set of arc-shaped retaining plates are distributed inside the lower semi-circular guard plate. The upper surface of the lower semi-circular guard plate is fitted with an upper semi-circular guard plate. The upper semi-circular guard plate has an upper guard plate limiting plate inside, and a set of upper guard plate limiting plates are distributed inside the upper semi-circular guard plate.
[0006] The pipe flange is adapted to the inner side of the upper semi-circular protective plate. The pipe flange is inserted into the upper semi-circular protective plate. The upper protective plate limiting plate and the lower protective plate limiting plate are in contact. The two ends of the upper semi-circular protective plate are aligned with the two ends of the lower semi-circular protective plate. The lower semi-circular protective plate has a lower protective plate protrusion on its side. The upper part of the lower protective plate protrusion has a vertical fixing plate. The side of the vertical fixing plate is connected to a fixing rod. The fixing rod is symmetrically arranged at both ends of the vertical fixing plate. The fixing rod is adapted to the sliding sleeve. The fixing rod is inserted into the sliding sleeve and slides inside the sliding sleeve. A spring is sleeved on the fixing rod. The side of the sliding sleeve has a sleeve side plate. One end of the spring abuts against the sleeve side plate, and the other end of the spring abuts against the vertical fixing plate.
[0007] The lower semicircular guard plate has lower guard plate side plates at both ends, and the upper semicircular guard plate has upper guard plate side plates at both ends. The lower guard plate side plates are adapted to the upper guard plate side plates. The sliding sleeve is inserted into the upper guard plate side plates and the lower guard plate side plates in sequence. The sliding sleeve has a strip-shaped sliding hole. The limiting slider passes through the strip-shaped sliding hole and connects to the fixing rod. The limiting slider slides in the strip-shaped sliding hole. Beneficial effects
[0008] 1. In this utility model, the pipe flanges on the sides of adjacent drainage pipes are inserted between a set of lower protective plates and limiting plates. The lower protective plates and limiting plates limit the lower half of the adjacent positioning holes, ensuring the adjacent pipe flanges are tightly fitted together, thus tightly connecting the adjacent drainage pipes. Simultaneously, the lower protective plates and limiting plates act as a seal, preventing leakage at the joint of the adjacent pipe flanges. The adjacent pipe flanges are then inserted between a set of upper protective plates and limiting plates, with the upper semicircular protective plate fastening onto the upper part of the lower semicircular protective plate. The upper protective plates and limiting plates also limit the upper half of the adjacent pipe flanges, completely engaging with the outer side of the adjacent pipe flanges using the lower protective plates and ensuring... For tight alignment of adjacent pipe flanges, a fixed insert rod is installed and fixed to the side of the lower semi-circular protective plate. The fixed insert rod is inserted into the sliding sleeve, forming a telescopic rod. A spring is fitted onto the fixed insert rod, and the spring, supported by a vertical fixed plate, applies an elastic thrust to the sliding sleeve, keeping the telescopic rod in an extended state. When the lower part of the upper semi-circular protective plate aligns with the upper part of the lower semi-circular protective plate, the side plate of the lower protective plate fits against the side plate of the upper protective plate. Under the action of the spring, the sliding sleeve of the telescopic rod is inserted into the side plate of the upper protective plate and then the side plate of the lower protective plate in sequence, tightly locking the telescopic rod and preventing the connection from breaking. This avoids loosening of the protective plate due to vibration or settlement, ensuring long-term stable sealing. A limiting slider passes through a strip-shaped sliding hole and connects to the fixed insert rod. The sliding distance of the limiting slider within the strip-shaped sliding hole is the telescopic distance of the telescopic rod. The limiting slider prevents the spring from popping out from the outside of the fixed insert rod under the action of the spring, ensuring the connection between the two.
[0009] 2. In this utility model, the side rod of the fixed rod passes through the positioning hole and is inserted into the positioning sleeve. The side rod of the fixed rod axially positions the adjacent pipe flange, and then axially positions the two connected drainage pipes. The inner block of the clamping plate is inserted into the limiting slide groove, so that the arc-shaped clamping plate is fixed in a horizontal position within the lower semi-circular guard plate. The inner block of the clamping plate is designed with this plug-in structure to facilitate the rotation and removal of the arc-shaped clamping plate. A set of arc-shaped clamping plates distributed on the lower semi-circular guard plate respectively limit the sides of the first and second sliding sleeves, preventing the first and second sliding sleeves from sliding and causing the side rod of the fixed rod to slide out of the positioning hole. This device facilitates disassembly and maintenance of the lower semi-circular guard plate. During installation, simply place the adjacent pipe flanges between the limiting plates of the lower semi-circular protective plate, and after fastening the upper semi-circular protective plate, the spring will automatically push the sliding sleeve into the side plate of the protective plate, completing a quick fixation without relying on professional welding equipment or multiple people working together to tighten the bolts. The upper and lower protective plate limiting plates limit the upper and lower positions of the pipe flanges, preventing radial displacement of the drainage pipes under the impact of water flow. The fixing rod side rod inserts into the positioning hole and positioning sleeve to achieve axial positioning of the drainage pipes, preventing the pipes from disengaging due to thermal expansion and contraction or water flow thrust. The multiple protective structures ensure that the drainage pipes maintain a tight connection when facing external forces such as soil settlement, water flow impact, and temperature changes, reducing problems such as joint wear and cracking. In addition, the wrapping protection of the pipe flanges by the upper and lower semi-circular protective plates can isolate corrosive substances in the soil from contacting the pipe flanges, delaying component aging and extending the service life of the drainage pipe joints. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the structure of a drainage device for a heating engineering pipeline according to the present invention.
[0011] Figure 2 This is a cross-sectional view of a drainage device for a heating engineering pipeline according to the present invention.
[0012] Figure 3 This is a schematic diagram of the lower semi-circular guard plate and drainage pipe structure described in this utility model.
[0013] Figure 4 This is a schematic diagram of the upper semi-circular guard plate structure described in this utility model.
[0014] Figure 5 This is a schematic diagram of the No. 1 and No. 2 sliding sleeves of this utility model. Detailed Implementation
[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
[0016] Example 1:
[0017] A drainage device for a heating system pipeline includes a lower semicircular guard plate 01, a drainage pipe 02, a fixed insert rod 09, a sliding sleeve 10, a limiting slider 13, a spring 16, a first sliding sleeve 20, a right fixed rod 22, a second sliding sleeve 24, and a positioning sleeve 26. The drainage pipe 02 has a pipe flange 03 on its side, with adjacent pipe flanges 03 fitting together. Each pipe flange 03 has multiple positioning holes 04. The pipe flange 03 is adapted to the inner side of the lower semicircular guard plate 01 and is inserted into the lower semicircular guard plate 01. The lower semicircular guard plate 01 has a lower guard plate limiting plate 05 inside, with its side fitting against the pipe flange 03. A set of lower guard plate limiting plates 05 is distributed inside the lower semicircular guard plate 01. The pipe flanges 03 on the sides of adjacent drainage pipes 02 are inserted between a set of lower guard plate limiting plates 05. The lower half of the adjacent positioning hole 04 is limited, so that the adjacent pipe flange 03 is tightly attached, thereby making the adjacent drainage pipe 02 tightly connected. At the same time, a set of lower guard plate limiting plates 05 plays a sealing role to prevent water leakage at the joint of the adjacent pipe flange 03. The lower semi-circular guard plate 01 has an arc-shaped clamping plate 15 inside. A set of arc-shaped clamping plates 15 are distributed inside the lower semi-circular guard plate 01. The upper surface of the lower semi-circular guard plate 01 is attached to the upper semi-circular guard plate 17. The upper semi-circular guard plate 17 has an upper guard plate limiting plate 18 inside. A set of upper guard plate limiting plates 18 are distributed inside the upper semi-circular guard plate 17, so that the upper semi-circular guard plate 17 is fastened to the upper part of the lower semi-circular guard plate 01. At the same time, a set of upper guard plate limiting plates 18 limits the upper half of the adjacent pipe flange 03 and fully engages with the outer side of the adjacent pipe flange 03 with a set of lower guard plate limiting plates 05, ensuring the tight engagement of the adjacent pipe flange 03.
[0018] Example 2:
[0019] The pipe flange 03 of this utility model is adapted to the inner side of the upper semi-circular protective plate 17. The pipe flange 03 is inserted into the upper semi-circular protective plate 17. The upper protective plate limiting plate 18 and the lower protective plate limiting plate 05 are in contact. The two ends of the upper semi-circular protective plate 17 are aligned with the two ends of the lower semi-circular protective plate 01. The side of the lower semi-circular protective plate 01 has a lower protective plate protrusion 07. The upper part of the lower protective plate protrusion 07 has a vertical fixing plate 08. The side of the vertical fixing plate 08 is connected to a fixing rod 09. The fixing rod 09 is installed and fixed on the side of the lower semi-circular protective plate 01. The fixing rod 09 is on both sides of the vertical fixing plate 08. The fixed insert 09 is symmetrically arranged and adapted to the sliding insert 10. The fixed insert 09 is inserted into the sliding insert 10, and the fixed insert 09 and the sliding insert 10 form a telescopic rod. The fixed insert 09 slides inside the sliding insert 10. The spring 16 is sleeved on the fixed insert 09. The side of the sliding insert 10 has a sleeve side plate 11. One end of the spring 16 abuts against the sleeve side plate 11, and the other end of the spring 16 abuts against the vertical fixed plate 08. The spring 16 applies an elastic thrust to the sliding insert 10 with the vertical fixed plate 08 as support, so that the telescopic rod is in the extended state.
[0020] Example 3:
[0021] The lower semicircular guard plate 01 of this utility model has lower guard plate side plates 14 at both ends, and the upper semicircular guard plate 17 has upper guard plate side plates 19 at both ends. The lower guard plate side plates 14 and the upper guard plate side plates 19 are adapted to each other. The sliding sleeve 10 is inserted into the upper guard plate side plates 19 and the lower guard plate side plates 14 in sequence. When the lower part of the upper semicircular guard plate 17 is aligned with the upper part of the lower semicircular guard plate 01, the lower guard plate side plates 14 and the upper guard plate side plates 19 are in close contact. Under the action of the spring 16, the sliding sleeve 10 of the telescopic rod is inserted into the upper guard plate side plates 19 and the lower guard plate side plates 14 in sequence. The telescopic rod tightly fastens 17 to 01 to prevent the two from being disconnected, avoid the guard plate from loosening due to vibration and settlement, and ensure the long-term stability of the sealing effect. The sliding sleeve 10 has a strip-shaped sliding hole 12. The limiting slider 13 passes through the strip-shaped sliding hole 12 and connects to the fixed plug rod 09. The limiting slider 13 slides in the strip-shaped sliding hole 12 and connects to the fixed plug rod 09. The sliding distance of the limiting slider 13 in the strip-shaped sliding hole 12 is the extension distance of the telescopic rod. The limiting slider 13 prevents the spring 16 from popping out from the outside of the fixed plug rod 09 under the action of the spring 16, thus ensuring the connection between the two.
[0022] Example 4:
[0023] The first sliding sleeve 20 of this utility model is adapted to the lower semi-circular guard plate 01. The first sliding sleeve 20 is inserted into the lower semi-circular guard plate 01. The side of the first sliding sleeve 20 is connected to the right fixing rod 22. The side of the right fixing rod 22 has a fixing rod side rod 23. The fixing rod side rod 23 is adapted to the positioning hole 04. The fixing rod side rod 23 passes through the positioning hole 04. The side of the pipe flange 03 is in contact with the right fixing rod 22. The second sliding sleeve 24 is adapted to the lower semi-circular guard plate 01. The second sliding sleeve 24 is inserted into the lower semi-circular guard plate 01. The side of the second sliding sleeve 24 is connected to the positioning sleeve 26. The fixing rod side rod 23 is adapted to the positioning sleeve 26. The fixing rod side rod 23 is inserted into the positioning sleeve 26. The side of the positioning sleeve 26 is in contact with the pipe flange 03. The fixing rod side rod 23 passes through the positioning hole 04 and is inserted into the positioning sleeve 26. The fixing rod side rod 23 axially positions the adjacent pipe flange 03, and thus axially positions the two connected drainage pipes 02.
[0024] Example 5:
[0025] The arc-shaped clamping plate 15 of this utility model has an inner clamping block 21 inside, and a limiting groove 25 on the lower semi-circular guard plate 01. The inner clamping block 21 is adapted to the limiting groove 25. The inner clamping block 21 is inserted into the limiting groove 25 and slides within the limiting groove 25, so that the arc-shaped clamping plate 15 is fixed in a horizontal position within the lower semi-circular guard plate 01. The inner clamping block 21 is designed with this plug-in structure to facilitate the rotation and removal of the arc-shaped clamping plate 15. The side of the arc-shaped clamping plate 15 is connected to the first... The sliding sleeve 20 is in contact with the sliding sleeve, and a set of arc-shaped clamping plates 15 are distributed inside the lower semicircular guard plate 01. The set of arc-shaped clamping plates 15 are in contact with the first sliding sleeve 20 and the second sliding sleeve 24 respectively. The set of arc-shaped clamping plates 15 distributed on the lower semicircular guard plate 01 limits the first sliding sleeve 20 and the second sliding sleeve 24 on both sides to prevent the first sliding sleeve 20 and the second sliding sleeve 24 from sliding and causing the fixed rod side rod 23 to slide out from the positioning hole 04. This device facilitates disassembly and maintenance of the lower semicircular guard plate 01. During installation, simply place the adjacent pipe flanges between the limiting plates of the lower semicircular guard plate, and after fastening the upper semicircular guard plate, the spring will automatically push the sliding sleeve into the side plate of the guard plate for quick fixing, without relying on professional welding equipment or multiple people to tighten the bolts. The upper and lower guard plate limiting plates limit the upper and lower positions of the pipe flange 03, preventing the drainage pipe 02 from radially shifting under the impact of water flow. The fixing rod side rod 23 is inserted into the positioning hole 04 and the positioning sleeve 26 to achieve axial positioning of the drainage pipe 02, preventing the pipe 02 from disengaging due to thermal expansion and contraction or water flow thrust. The multiple protective structures ensure that the drainage pipe 02 maintains a tight connection when facing external forces such as soil settlement, water flow impact, and temperature changes, reducing problems such as joint wear and cracking. In addition, the wrapping protection of the pipe flange 03 by the upper and lower semicircular guard plates can isolate corrosive substances in the soil from contacting the pipe flange 03, delaying component aging and extending the service life of the drainage pipe 02 interface.
[0026] Installation steps: First, align adjacent pipe flanges 03. Insert the mating pipe flanges 03 between a set of lower guard plate limiting plates 05. Insert the first sliding sleeve 20 into the lower semi-circular guard plate 01. Insert the fixing rod side rod 23 into the positioning hole 04. Insert the second sliding sleeve 24 into the lower semi-circular guard plate 01. Insert the fixing rod side rod 23 into the positioning sleeve 26. Insert the clamping plate inner block 21 into the limiting slide groove 25. Align the sides of a set of arc-shaped clamping plates 15 with the first sliding sleeve 20 and the second sliding sleeve 24 respectively. Fit the upper semicircular guard plate 17 with the lower semicircular guard plate 01. Insert the adjacent positioning holes 04 between a set of upper guard plate limiting plates 18. Connect the fixing rod 09 to the vertical fixing plate 08. Fit the spring 16 onto the fixing rod 09. Insert the fixing rod 09 into the sliding sleeve 10. Connect the limiting slider 13 through the strip-shaped sliding hole 12 to the fixing rod 09. Pass the sliding sleeve 10 through the upper guard plate side plate 19 and the lower guard plate side plate 14 in sequence.
[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A drainage device for a heating system pipeline, characterized in that: The system includes a lower semicircular guard plate (01), a drainage pipe (02), a fixed insert rod (09), a sliding sleeve (10), a limiting slider (13), a spring (16), a first sliding sleeve (20), a right fixed rod (22), a second sliding sleeve (24), and a positioning sleeve (26). The drainage pipe (02) has a pipe flange (03) on its side. Adjacent pipe flanges (03) fit together. The pipe flange (03) has multiple positioning holes (04). The pipe flange (03) is adapted to the inner side of the lower semicircular guard plate (01). The pipe flange (03) is inserted into the lower semicircular guard plate (01). The semi-circular guard plate (01) has a lower guard plate limiting plate (05) inside. The side of the lower guard plate limiting plate (05) is in contact with the pipe flange (03). A set of lower guard plate limiting plates (05) are distributed inside the lower semi-circular guard plate (01). The lower semi-circular guard plate (01) has an arc-shaped clamping plate (15) inside. A set of arc-shaped clamping plates (15) are distributed inside the lower semi-circular guard plate (01). The upper surface of the lower semi-circular guard plate (01) is in contact with the upper semi-circular guard plate (17). The upper semi-circular guard plate (17) has an upper guard plate limiting plate (18) inside. A set of upper guard plate limiting plates (18) are distributed inside the upper semi-circular guard plate (17).
2. A drainage device for a heating engineering pipeline according to claim 1, characterized in that: The pipe flange (03) is adapted to the inner side of the upper semicircular guard plate (17). The pipe flange (03) is inserted into the upper semicircular guard plate (17). The upper guard plate limiting plate (18) and the lower guard plate limiting plate (05) are in contact. The two ends of the upper semicircular guard plate (17) are aligned with the two ends of the lower semicircular guard plate (01). The lower semicircular guard plate (01) has a lower guard plate protrusion (07) on its side. The upper part of the lower guard plate protrusion (07) has a vertical fixing plate (08). The side of the vertical fixing plate (08) is connected to a fixing rod (09). The fixed rod (09) is symmetrically arranged at both ends of the vertical fixed plate (08). The fixed rod (09) is adapted to the sliding sleeve (10). The fixed rod (09) is inserted into the sliding sleeve (10) and slides inside the sliding sleeve (10). The spring (16) is sleeved on the fixed rod (09). The side of the sliding sleeve (10) has a sleeve side plate (11). One end of the spring (16) abuts against the sleeve side plate (11), and the other end of the spring (16) abuts against the vertical fixed plate (08).
3. A drainage device for a heating engineering pipeline according to claim 2, characterized in that: The lower semicircular guard plate (01) has lower guard plate side plates (14) at both ends, and the upper semicircular guard plate (17) has upper guard plate side plates (19) at both ends. The lower guard plate side plates (14) are adapted to the upper guard plate side plates (19). The sliding sleeve (10) is inserted into the upper guard plate side plates (19) and the lower guard plate side plates (14) in sequence. The sliding sleeve (10) has a strip-shaped sliding hole (12). The limiting slider (13) passes through the strip-shaped sliding hole (12) and connects to the fixed plug rod (09). The limiting slider (13) slides in the strip-shaped sliding hole (12).
4. A drainage device for a heating engineering pipeline according to claim 3, characterized in that: The first sliding sleeve (20) is adapted to the lower semicircular guard plate (01). The first sliding sleeve (20) is inserted into the lower semicircular guard plate (01). The side of the first sliding sleeve (20) is connected to the right fixed rod (22). The side of the right fixed rod (22) has a fixed rod side rod (23). The fixed rod side rod (23) is adapted to the positioning hole (04). The fixed rod side rod (23) passes through the positioning hole (04). The side of the pipe flange (03) is in contact with the right fixed rod (22). The second sliding sleeve (24) is adapted to the lower semicircular guard plate (01). The second sliding sleeve (24) is inserted into the lower semicircular guard plate (01). The side of the second sliding sleeve (24) is connected to the positioning sleeve (26). The fixed rod side rod (23) is adapted to the positioning sleeve (26). The fixed rod side rod (23) is inserted into the positioning sleeve (26). The side of the positioning sleeve (26) is in contact with the pipe flange (03).
5. A drainage device for a heating engineering pipeline according to claim 3, characterized in that: The arc-shaped card plate (15) has a card plate inner block (21) inside, and the lower semi-circular guard plate (01) has a limiting slide groove (25). The card plate inner block (21) is adapted to the limiting slide groove (25). The card plate inner block (21) is inserted into the limiting slide groove (25). The card plate inner block (21) slides in the limiting slide groove (25). The side of the arc-shaped card plate (15) is in contact with the first sliding sleeve (20). A set of arc-shaped card plates (15) are distributed inside the lower semi-circular guard plate (01). A set of arc-shaped card plates (15) are in contact with the first sliding sleeve (20) and the second sliding sleeve (24) respectively.