A new valve structure for ventilated thermal insulation pipe
Through a simple transmission structure and enclosed design consisting of a rotating shaft, a linkage cylinder, a positioning ball, and a positioning groove, the complex assembly and heat exchange problems of existing ventilation duct valves are solved, achieving precise adjustment and improved insulation performance while reducing energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU DACO STATIC WIND PIPE CO LTD
- Filing Date
- 2025-10-21
- Publication Date
- 2026-06-23
AI Technical Summary
Existing valves for ventilation ducts suffer from problems such as complex assembly, difficult maintenance, and severe heat exchange, which affect ventilation efficiency and energy consumption.
It adopts a simple transmission structure with a rotating shaft, linkage cylinder, positioning ball and multiple sets of spaced positioning grooves, combined with the closed design of the receiving ring and end cap, and uses a polyurethane foam sealing plate to wrap the valve control structure.
It achieves precise adjustment of the valve plate opening and closing degree, reduces assembly and maintenance difficulty, reduces heat exchange, improves temperature stability and energy saving effect, and is suitable for the high-efficiency energy saving requirements of ventilation and heat preservation scenarios.
Smart Images
Figure CN224397154U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ventilation duct technology, and in particular to a novel valve structure for ventilation and heat-insulating ducts. Background Technology
[0002] In ventilation system operation, valves, as core components for regulating the flow and interruption of airflow within ducts, are widely used in building ventilation, industrial fresh air delivery, cold chain storage, and other scenarios. Their performance directly affects ventilation efficiency and system energy consumption. However, existing valves for ventilation ducts have two key problems: First, some valves, in order to achieve precise adjustment and stable positioning, are designed with multiple complex transmission structures, which not only makes assembly steps cumbersome and maintenance difficult but also increases manufacturing costs. Second, the control components of most valves are directly exposed to the external environment and lack effective sealing and insulation design, resulting in a large amount of heat exchange between the airflow transported in the duct and the outside environment. Especially in ventilation and insulation scenarios that require maintaining a specific temperature, the heat loss problem is significant, which reduces the temperature control accuracy of the ventilation system and increases additional energy consumption, making it difficult to meet the requirements for high-efficiency and energy-saving use.
[0003] Therefore, those skilled in the art have provided a novel valve structure for ventilation and insulation ducts to solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a novel valve structure for ventilation and heat-insulating pipes.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A novel valve structure for ventilation and heat insulation ducts includes a duct body, wherein a receiving ring is integrally fixed to the outer wall of the duct body, and an installation plate that fits against the outer wall of the duct body is installed at the inner end of the receiving ring facing the duct body.
[0007] The mounting plate has a positioning shaft hole in the middle along its axis, and a rotating shaft passes through the inner side of the positioning shaft hole. The outer side of the mounting plate away from the pipe body has a hollow linkage cylinder in the middle, and the end of the rotating shaft away from the pipe body is inserted into the inner side of the linkage cylinder and can be detachably fixed by screws.
[0008] A connecting rod is radially fixed to one side of the outer wall of the linkage cylinder. A hollow positioning cylinder is fixed to the end of the connecting rod away from the linkage cylinder. A positioning ball is provided inside the positioning cylinder, and a pre-tightening spring is installed between the positioning ball and the closed end of the positioning cylinder.
[0009] The mounting plate has multiple positioning grooves evenly spaced along a circumferential direction on its outer surface away from the pipe body. The contour of the positioning groove is adapted to the outer side of the positioning ball, and the positioning ball can extend out of the positioning cylinder opening and be inserted into the inner side of the positioning groove.
[0010] Preferably, a connecting shaft is integrally fixed to the other end of the rotating shaft near the pipe body. The connecting shaft is coaxial with the rotating shaft, and the end of the connecting shaft away from the rotating shaft moves through the outer wall of the pipe body and is fixedly connected to the end of the valve plate shaft on the inner side of the pipe body.
[0011] Preferably, the inner diameter of the positioning shaft hole is matched with the outer diameter of the rotating shaft, the outer diameter of the connecting shaft is larger than the outer diameter of the rotating shaft, and the stepped structure formed at the connection between the connecting shaft and the rotating shaft abuts against the side of the mounting plate near the pipe body.
[0012] Preferably, the preload spring is in a compressed state, the outer side of the positioning ball is in contact with the outer side of the mounting plate away from the pipe body, and can roll along the outer side of the mounting plate.
[0013] Preferably, a threaded groove is provided on the outer side of the rotating shaft, and a countersunk hole is provided on the outer wall of the linkage cylinder at a position corresponding to the threaded groove. A screw is inserted through the inner side of the countersunk hole, and the end of the screw is threadedly connected to the threaded groove.
[0014] Preferably, a pointer is radially fixed to the outer wall of the linkage cylinder on the other side opposite to the connecting rod, and an indicator arrow is provided on the outer surface of the mounting plate away from the pipe body, corresponding to the circumferential trajectory of the pointer head.
[0015] Preferably, the outer side wall of the mounting plate has a plurality of mounting holes evenly distributed in a ring array, the edge of the contact surface between the mounting plate and the pipe body is filled with sealant, and fastening screws are inserted through the mounting holes to fix the mounting plate and the pipe body.
[0016] Preferably, an end cap is installed at the end of the receiving ring away from the pipe body, and a sealing disc made of polyurethane foam is bonded to the middle of the inner side of the end cap. The sealing disc is inserted into the inner side of the outer port of the receiving ring away from the pipe body, and its outer diameter is adapted to the inner diameter of the receiving ring.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] This novel valve structure achieves precise adjustment of the valve plate opening and closing degree through the cooperation of a rotating shaft, a linkage cylinder, a positioning ball, and multiple sets of spaced positioning grooves, using a simple transmission and positioning structure. It eliminates the need for complex components, reducing assembly and maintenance difficulty. At the same time, the closed design of the receiving ring and end cap, combined with a polyurethane foam sealing plate, completely encloses the valve control structure, significantly reducing heat exchange between the control components and the outside environment. This prevents heat loss due to component exposure caused by airflow in the pipeline, improving the temperature stability of ventilation and insulation pipelines and reducing energy consumption. Overall, it balances adjustment accuracy, insulation performance, and ease of use, meeting the high-efficiency and energy-saving requirements of ventilation and insulation scenarios. Attached Figure Description
[0019] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0020] Figure 1 This is a schematic diagram of the pipe body structure proposed in this utility model;
[0021] Figure 2 This is a schematic diagram of the mounting structure of the mounting plate proposed in this utility model;
[0022] Figure 3 This is a schematic diagram of the end cap structure proposed in this utility model;
[0023] Figure 4 This is a schematic diagram of the linkage cylinder installation structure proposed in this utility model;
[0024] Figure 5 This is a schematic diagram of the rotating shaft mounting structure proposed in this utility model;
[0025] Figure 6 This is a schematic diagram of the positioning ball installation structure proposed in this utility model;
[0026] Figure 7 This is a schematic diagram of the valve plate mounting structure proposed in this utility model.
[0027] In the diagram: 1. Pipe body; 2. Receiving ring; 3. Mounting plate; 4. Positioning shaft hole; 5. Rotating shaft; 6. Connecting shaft; 7. Linkage cylinder; 8. Connecting rod; 9. Positioning cylinder; 10. Preload spring; 11. Positioning ball; 12. Positioning groove; 13. Pointer; 14. Mounting hole; 15. Valve plate; 16. End cover; 17. Sealing plate. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Reference Figure 1-7 A novel valve structure for ventilation and heat insulation pipes includes a pipe body 1, a receiving ring 2 integrally fixed to the outer wall of the pipe body 1, and an installation plate 3 that fits against the outer wall of the pipe body 1 at the inner end of the receiving ring 2 facing the pipe body.
[0030] A positioning shaft hole 4 is provided in the middle of the mounting plate 3 along its axis. A rotating shaft 5 passes through the inner side of the positioning shaft hole 4. A hollow linkage cylinder 7 is provided in the middle of the outer side of the mounting plate 3 away from the pipe body 1. The end of the rotating shaft 5 away from the pipe body 1 is inserted into the inner side of the linkage cylinder 7 and can be detachably fixed by screws.
[0031] A connecting rod 8 is radially fixed to one side of the outer wall of the linkage cylinder 7. A hollow positioning cylinder 9 is fixed to the end of the connecting rod 8 away from the linkage cylinder 7. A positioning ball 11 is provided inside the positioning cylinder 9, and a pre-tightening spring 10 is installed between the positioning ball 11 and the closed end of the positioning cylinder 9.
[0032] The mounting plate 3 has multiple positioning grooves 12 that are evenly distributed along the annular direction on its outer surface away from the pipe body 1. The outline of the positioning groove 12 is adapted to the outer side of the positioning ball 11, and part of the positioning ball 11 can extend out of the opening of the positioning cylinder 9 and be inserted into the inner side of the positioning groove 12.
[0033] Using the above technical solution, the positioning shaft hole 4 in the middle of the mounting plate 3 cooperates with the rotating shaft 5 to provide precise rotation guidance for the rotating shaft 5, ensuring its stable rotation and preventing deviation; the end of the rotating shaft 5 away from the pipe body 1 is inserted into the inside of the linkage cylinder 7 and is detachably fixed with screws. Both the linkage cylinder 7 and the positioning cylinder 9 have an opening facing the mounting plate 3 and a closed end on the other side. This connection method realizes the synchronous linkage between the rotating shaft 5 and the linkage cylinder 7. At the same time, the closed end of the positioning cylinder 9 provides a stable installation reference for the preload spring 10; the preload spring 10 is in a compressed state. The rotating shaft 5 applies a force towards the mounting plate 3 to the positioning ball 11, ensuring that the positioning ball 11 always fits against the outer surface of the mounting plate 3. When the rotating shaft 5 drives the linkage cylinder 7, connecting rod 8, and positioning cylinder 9 to rotate, the positioning ball 11 rolls along the outer surface of the mounting plate 3. When the rotation stops, the positioning ball 11 can accurately engage with the corresponding positioning groove 12, achieving rapid positioning of the rotating shaft 5. This ensures the stability of the valve's position after adjustment and prevents the valve from shifting due to airflow impact. The overall structure, through the connection and cooperation of various components, balances the smoothness of rotational transmission with the reliability of adjustment and positioning.
[0034] A connecting shaft 6 is integrally fixed to the other end of the rotating shaft 5 near the pipe body 1. The connecting shaft 6 is coaxial with the rotating shaft 5, and the end of the connecting shaft 6 away from the rotating shaft 5 moves through the outer wall of the pipe body 1 and is fixed to the end of the valve plate 15 shaft on the inner side of the pipe body 1.
[0035] Using the above technical solution, the rotating shaft 5 and the connecting shaft 6 are integrally fixed and coaxially set to ensure that the two rotate synchronously; the end of the connecting shaft 6 away from the rotating shaft 5 passes through the outer wall of the pipe body 1 and is fixedly connected to the shaft of the valve plate 15, forming a transmission path of "rotating shaft 5-connecting shaft 6-valve plate 15", which can directly transmit the rotational motion of the rotating shaft 5 to the valve plate 15, so that the valve plate 15 rotates synchronously with the rotating shaft 5, thereby realizing the opening and closing and opening degree adjustment of the ventilation channel of the pipe body 1.
[0036] The inner diameter of the positioning shaft hole 4 is matched with the outer diameter of the rotating shaft 5. The outer diameter of the connecting shaft 6 is larger than the outer diameter of the rotating shaft 5. The stepped structure formed at the connection between the connecting shaft 6 and the rotating shaft 5 abuts against the side of the mounting plate 3 near the pipe body 1.
[0037] Using the above technical solution, the outer diameter of the connecting shaft 6 is larger than the outer diameter of the rotating shaft 5. The stepped structure formed by the connection of the two abuts against the side of the mounting plate 3, which limits the axial movement of the rotating shaft 5 and prevents axial movement when the rotating shaft 5 rotates.
[0038] The preload spring 10 is in a compressed state, the outer side of the positioning ball 11 is in contact with the outer side of the mounting plate 3 away from the pipe body 1, and can roll along the outer side of the mounting plate 3.
[0039] With the above technical solution, the preload spring 10 is in a compressed state, continuously applying a tightening force to the positioning ball 11, ensuring that the positioning ball 11 is always in close contact with the outer side of the mounting plate 3, avoiding positioning failure caused by gaps; the positioning ball 11 can roll along the outer side of the mounting plate 3, reducing frictional resistance through rolling, reducing component wear and extending service life, and improving operational smoothness.
[0040] A threaded groove is provided on the outer side of the rotating shaft 5, and a countersunk hole is provided on the outer wall of the linkage cylinder 7 at a position corresponding to the threaded groove. A screw is inserted inside the countersunk hole, and the end of the screw is threadedly connected to the threaded groove.
[0041] Using the above technical solution, the outer threaded groove of the rotating shaft 5 and the countersunk hole on the outer wall of the linkage cylinder 7 are connected by screws. On the one hand, the two can be detached and fixed, which is convenient for subsequent maintenance and replacement of parts; on the other hand, the countersunk hole can accommodate the screw head and prevent it from protruding and interfering with other structures.
[0042] A pointer 13 is radially fixed to the outer wall of the linkage cylinder 7 on the other side of the connecting rod 8. An indicator arrow is provided on the outer surface of the mounting plate 3 away from the pipe body 1, corresponding to the circumferential trajectory of the pointer 13 head.
[0043] Using the above technical solution, the pointer 13 on the outer wall of the linkage cylinder 7 rotates synchronously with the linkage cylinder 7, and cooperates with the indicator arrow on the outer side of the mounting plate 3. The operator can directly judge the opening and closing direction and current status of the valve plate 15 by the arrow pointed to by the pointer 13, without the need for additional tools, and quickly determine the pipeline opening and closing status.
[0044] Multiple mounting holes 14 are evenly distributed in a ring array on the outer side of the mounting plate 3. The edge of the mating surface between the mounting plate 3 and the pipe body 1 is filled with sealant, and fastening screws are inserted through the mounting holes 14 to fix the mounting plate 3 and the pipe body 1.
[0045] Using the above technical solution, the annular array mounting holes 14 on the side of the mounting plate 3 are used for fastening screws to pass through, so as to achieve a stable connection between the mounting plate 3 and the pipe body 1; the sealant filled on the edge of the mating surface can seal the gaps, prevent air leakage in the pipe, ensure the sealing performance of the ventilation and heat preservation pipe, and adapt to its ventilation transmission requirements.
[0046] An end cap 16 is installed at the end of the receiving ring 2 away from the pipe body 1. A polyurethane foam sealing disc 17 is bonded to the middle of the inner side of the end cap 16. The sealing disc 17 is inserted into the inner side of the outer port of the receiving ring 2 away from the pipe body 1, and its outer diameter is adapted to the inner diameter of the receiving ring 2.
[0047] By adopting the above technical solution, the receiving ring 2 and the end cap 16 cooperate to form a closed space, completely enclosing the control structure of the valve, such as the linkage cylinder 7, connecting rod 8, and positioning cylinder 9, thus preventing the control structure from being directly exposed to the external environment. At the same time, the polyurethane foam sealing plate 17 inside the end cap 16 is inserted into the inside of the port of the receiving ring 2, further enhancing the sealing performance of the closed space and significantly reducing the heat exchange between the pipeline body 1 and the valve control structure and the outside environment. Compared with the heat loss problem caused by the direct exposure of the traditional valve control structure, this effectively reduces the temperature loss of the airflow in the pipeline, better meets the insulation performance requirements of ventilation and insulation pipelines, ensures the stability of the airflow temperature in the pipeline, and reduces energy waste.
[0048] Working principle:
[0049] The operator rotates the linkage cylinder 7, causing the rotating shaft 5 fixed to it to rotate synchronously. The rotating shaft 5 transmits the rotation to the valve plate 15 inside the pipe body 1 through the connecting shaft 6, causing the valve plate 15 to rotate accordingly to adjust the opening and closing of the pipe ventilation channel. At the same time, the linkage cylinder 7 drives the positioning cylinder 9 to rotate synchronously through the connecting rod 8. The pre-tension spring 10 in the positioning cylinder 9, which is in a compressed state, pushes the positioning ball 11 to always be in contact with the outer side of the mounting plate 3. When the positioning cylinder 9 rotates, the positioning ball 11 rolls along the outer side of the mounting plate 3. When it rotates to the target position, the positioning ball 11 is inserted into the positioning groove 12 at the corresponding position on the mounting plate 3, thereby fixing the position of the rotating shaft 5 and the valve plate 15. The multiple positioning grooves 12 opened at intervals along the ring on the mounting plate 3 can correspond to different rotation angles of the valve plate 15, thereby realizing multi-level adjustment of the opening and closing degree of the valve plate 15 to meet the different ventilation volume requirements of the pipe. In addition, the end cap 16 and the receiving ring 2 cooperate to wrap the valve control structure, and the sealing plate 17 enhances the heat preservation and sealing performance, reducing heat exchange and air leakage.
[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A new valve structure for ventilated thermal insulation pipes, comprising a pipe body (1), characterized in that, The outer wall of the pipe body (1) is integrally fixed with a receiving ring (2), and the receiving ring (2) has an installation plate (3) that fits against the outer wall of the pipe body (1) installed on the inner side of the pipe body. The mounting plate (3) has a positioning shaft hole (4) in the middle along its axis, and a rotating shaft (5) passes through the inner side of the positioning shaft hole (4). A hollow linkage cylinder (7) is provided in the middle of the outer side of the mounting plate (3) away from the pipe body (1), and one end of the rotating shaft (5) away from the pipe body (1) is inserted into the inner side of the linkage cylinder (7) and can be detachably fixed by screws. A connecting rod (8) is fixed radially to one side of the outer wall of the linkage cylinder (7). A hollow positioning cylinder (9) is fixed to one end of the connecting rod (8) away from the linkage cylinder (7). A positioning ball (11) is provided inside the positioning cylinder (9), and a pre-tightening spring (10) is installed between the positioning ball (11) and the closed end of the positioning cylinder (9). The mounting plate (3) has multiple positioning grooves (12) that are evenly distributed along the annular direction on the outer surface away from the pipe body (1). The outline of the positioning groove (12) is adapted to the outer side of the positioning ball (11), and part of the positioning ball (11) can extend out of the opening of the positioning cylinder (9) and be inserted into the inner side of the positioning groove (12).
2. A new valve structure for ventilated thermal insulation pipes according to claim 1, characterized in that, The rotating shaft (5) is integrally fixed to the other end near the pipe body (1) with a connecting shaft (6). The connecting shaft (6) is coaxial with the rotating shaft (5), and the end of the connecting shaft (6) away from the rotating shaft (5) moves through the outer wall of the pipe body (1) and is fixed to the end of the valve plate (15) shaft on the inner side of the pipe body (1).
3. The novel valve structure for ventilation and heat-insulating ducts according to claim 2, characterized in that, The inner diameter of the positioning shaft hole (4) is matched with the outer diameter of the rotating shaft (5), the outer diameter of the connecting shaft (6) is larger than the outer diameter of the rotating shaft (5), and the stepped structure formed at the connection between the connecting shaft (6) and the rotating shaft (5) abuts against the side of the mounting plate (3) near the pipe body (1).
4. The novel valve structure for ventilation and heat-insulating ducts according to claim 1, characterized in that, The preload spring (10) is in a compressed state, and the outer side of the positioning ball (11) is in contact with the outer side of the mounting plate (3) away from the pipe body (1), and can roll along the outer side of the mounting plate (3).
5. A novel valve structure for ventilation and heat-insulating ducts according to claim 1, characterized in that, The rotating shaft (5) has a threaded groove on its outer side. The linkage cylinder (7) has a countersunk hole on its outer wall at a position corresponding to the threaded groove. A screw is inserted through the countersunk hole, and the end of the screw is threadedly connected to the threaded groove.
6. The novel valve structure for ventilation and heat-insulating ducts according to claim 1, characterized in that, A pointer (13) is radially fixed to the other side of the outer wall of the linkage cylinder (7) opposite to the connecting rod (8). On the outer surface of the mounting plate (3) away from the pipe body (1), there is an indicator arrow corresponding to the circumferential trajectory of the pointer (13).
7. The novel valve structure for ventilation and heat-insulating ducts according to claim 1, characterized in that, The mounting plate (3) has multiple mounting holes (14) evenly distributed in a ring array on the outer side wall. The edge of the mating surface between the mounting plate (3) and the pipe body (1) is filled with sealant, and fastening screws are inserted through the mounting holes (14) to fix the mounting plate (3) and the pipe body (1) together.
8. A novel valve structure for ventilation and heat-insulating ducts according to claim 1, characterized in that, An end cap (16) is installed at the end of the receiving ring (2) away from the pipe body (1). A sealing disc (17) made of polyurethane foam is bonded to the middle of the inner side of the end cap (16). The sealing disc (17) is inserted into the inner side of the outer port of the receiving ring (2) away from the pipe body (1), and its outer diameter is adapted to the inner diameter of the receiving ring (2).