Electric heating belt wiring structure, valve blade assembly and air valve

Abstract

The utility model relates to an electric heating belt wiring structure, a valve blade assembly and an air valve, the electric heating belt wiring structure comprises a mounting pipe, a through hole is formed in the side wall of the mounting pipe, a guide part is arranged in the mounting pipe, and the guide part is close to the through hole and is arranged along at least one side hole wall of the length direction of the mounting pipe; the guide piece is provided with an arc guide face used for being attached to the electric heating belt, and the projection of the through hole in the width direction of the installation pipe covers the projection of the arc guide face in the width direction of the installation pipe. The wiring structure of the electric heating belt can prevent the electric heating belt from being cut by the hole wall of the through hole.

Description

Technical Field

[0001] The present application relates to the technical field of air valves, and particularly to an electric heating tape wiring structure, a valve vane assembly, and an air valve. Background Art

[0002] In a cold environment, the components of an air valve are prone to freezing, making it impossible for the valve vanes to open and close normally. A common solution is to install an electric heating tape on the valve vanes to prevent the valve vanes from freezing by heating with the electric heating tape. Specifically, multiple steel pipes are usually arranged on the valve vanes for the electric heating tape to pass through. Since the multiple steel pipes are arranged at intervals, through holes need to be opened on the side walls of the steel pipes to allow the electric heating tape to extend out of the steel pipes and enter other adjacent steel pipes. However, since the hole walls of the through holes will form sharp cut surfaces, and a relatively large amount of force is required to stretch and bend the electric heating tape during the process of passing the electric heating tape through the through holes, the electric heating tape is easily cut by the hole walls of the through holes, resulting in a relatively large potential leakage hazard during the later use of the electric heating tape. Summary of the Utility Model

[0003] Based on this, it is necessary to provide an electric heating tape wiring structure that can prevent the electric heating tape from being cut by the hole walls of the through holes.

[0004] An electric heating tape wiring structure for installing an electric heating tape, the electric heating tape wiring structure includes an installation pipe, through holes are opened on the side wall of the installation pipe, and a guiding member is provided on the installation pipe, the guiding member is arranged close to at least one side hole wall of the through hole along the length direction of the installation pipe; the guiding member has an arc guiding surface for fitting the electric heating tape, and the projection of the through hole along the width direction of the installation pipe covers the projection of the arc guiding surface along the width direction of the installation pipe.

[0005] In one embodiment, the guiding member is configured as a cylinder, and both ends of the guiding member are respectively connected to the top wall and the bottom wall of the installation pipe.

[0006] In one embodiment, the number of guiding members is configured as two, one guiding member is arranged close to one side hole wall of the through hole along the length direction of the installation pipe, the other guiding member is arranged close to the other side hole wall of the through hole along the length direction of the installation pipe, and the arc guiding surfaces on the two guiding members are arranged oppositely and enclose an assembly space for the electric heating tape to pass through.

[0007] In one embodiment, along the length direction of the installation pipe, the length of the assembly space is D1, the thickness of the electric heating tape is H, and 4H ≤ D1 ≤ 6H.

[0008] In one embodiment, along the length direction of the installation pipe, the maximum distance between each arc guiding surface and the hole wall of the through hole adjacent to it is D2, and 4.5 mm ≤ D2 ≤ 5.5 mm.

[0009] In one embodiment, the installation pipe is configured as a steel pipe. The top wall and the bottom wall of the installation pipe are both configured as flat plates, and the two side walls of the installation pipe are configured as arc-shaped plates. Along the thickness direction of the installation pipe, one side hole wall of the through hole is located at the junction of the top wall and the side wall of the installation pipe, and the other side hole wall of the through hole is located at the junction of the bottom wall and the side wall of the installation pipe.

[0010] The present application also provides a valve vane assembly, which includes an electric heating tape, a first valve vane, a second valve vane, and the electric heating tape wiring structure described in any one of the above embodiments. The electric heating tape wiring structure is installed between the first valve vane and the second valve vane.

[0011] In one embodiment, the valve vane assembly further includes a rotating shaft, which is installed between the first valve vane and the second valve vane. Two through holes are provided on the rotating shaft at intervals along its own length direction. The installation pipes are configured as two, and the two installation pipes are respectively located on both sides of the rotating shaft. The through holes are provided on the side walls of each installation pipe facing the rotating shaft and are arranged in one-to-one correspondence with the through holes. The electric heating tape is wound between the two installation pipes through the through holes and the through holes to form a square structure. Moreover, the first valve vane and the second valve vane are respectively fixedly connected to the rotating shaft and the two installation pipes.

[0012] In one embodiment, the electric heating tape includes a conductor and a sheath covering the outer periphery of the conductor.

[0013] The present application also provides a wind valve, which includes the valve vane assembly described in any one of the above embodiments.

[0014] Compared with the prior art, for the electric heating tape wiring structure provided by the present application, since the projection of the through hole along the width direction of the installation pipe covers the projection of the arc-shaped guiding surface along the width direction of the installation pipe, when the electric heating tape extends out from the side wall through the through hole, the electric heating tape will fit on the arc-shaped guiding surface and will not contact the hole wall of the through hole, thereby protecting the electric heating tape and preventing it from being cut by the hole wall of the through hole. In this way, the potential safety hazard of electric leakage during the later use of the electric heating tape can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic structural diagram of the wind valve provided by the present application;

[0017] Figure 2Schematic structural diagram of the valve vane assembly provided by this application;

[0018] Figure 3 Cross-sectional view of the valve vane assembly provided by this application along the radial direction of the installation pipe;

[0019] Figure 4 Axonometric view of the electric heating tape wiring structure provided by this application;

[0020] Figure 5 Partial schematic diagram of the assembly of the installation pipe and the electric heating tape provided by this application;

[0021] Figure 6 Partial schematic diagram of the electric heating tape provided by this application.

[0022] Reference numerals: 1, air valve; 101, valve vane assembly; 100, electric heating tape wiring structure; 10, installation pipe; 11, through hole; 12, side wall; 13, top wall; 14, bottom wall; 20, guide member; 21, arc guide surface; 23, assembly space; 24, left guide member; 25, right guide member; 30, rotating shaft; 31, through hole; 200, electric heating tape; 210, conductor; 211, wire core; 212, core tape; 220, sheath; 300, first valve vane; 400, second valve vane. Detailed implementation manners

[0023] To make the above objects, features, and advantages of this application more apparent and understandable, the following will describe the detailed implementation manners of this application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of this application. Therefore, this application is not limited by the specific embodiments disclosed below.

[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used in the specification of this application are only for the purpose of illustration and do not represent the only implementation manner.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In this application, unless otherwise clearly specified and defined, the first feature may be in direct contact with the second feature or in indirect contact with the second feature through an intermediate medium when the first feature is "on" or "under" the second feature. Moreover, when the first feature is "above", "over" or "on top of" the second feature, the first feature may be directly above or diagonally above the second feature, or merely indicate that the first feature has a higher horizontal height than the second feature. When the first feature is "under", "beneath" or "underneath" the second feature, the first feature may be directly below or diagonally below the second feature, or merely indicate that the first feature has a lower horizontal height than the second feature.

[0027] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0028] Please refer to Figure 4 and Figure 5 , this application provides an electric heating tape routing structure 100 for installing an electric heating tape 200. The electric heating tape routing structure 100 includes an installation pipe 10. A through hole 11 is formed in the side wall of the installation pipe 10. The installation pipe 10 is provided with a guiding member 20. The guiding member 20 is arranged close to at least one side wall of the through hole 11 along the length direction of the installation pipe 10. The guiding member 20 has an arc guiding surface 21. The arc guiding surface 21 is used for fitting the electric heating tape 200. Moreover, the projection of the through hole 11 along the width direction of the installation pipe 10 covers the projection of the arc guiding surface 21 along the width direction of the installation pipe 10.

[0029] It should be noted that the width direction of the installation pipe 10 refers to the direction from one side wall 12 of the installation pipe 10 to the opposite side wall 12, and the thickness direction of the installation pipe 10 refers to the direction from the top wall 13 to the bottom wall 14 of the installation pipe 10. It can be understood that since the projection of the through hole 11 in the width direction of the installation pipe 10 covers the projection of the arc guide surface 21 in the width direction of the installation pipe 10, when the electric heating tape 200 extends out from the side wall 12 through the through hole 11, the electric heating tape 200 will adhere to the arc guide surface 21 and will not contact the hole wall of the through hole 11, thereby being able to protect the electric heating tape 200 and prevent it from being cut by the hole wall of the through hole 11. In this way, the potential safety hazard of electric leakage of the electric heating tape 200 during later use can be avoided.

[0030] Optionally, in one embodiment, as Figure 2 shown, the guide member 20 is configured as a cylinder, and both ends of the guide member 20 are respectively connected to the top wall 13 and the bottom wall 14 of the installation pipe 10. In this way, the side wall of the guide member 20 forms an arc guide surface 21, and the guide member 20 can also play a supporting role between the top wall 13 and the bottom wall 14, thereby being beneficial to improving the strength of the installation pipe 10 at the through hole 11.

[0031] Alternatively, in another embodiment, the guide member 20 is configured as a half cylinder cut along the radial direction, or the guide member 20 is configured as a combination of a half cylinder cut along the radial direction and other shapes. As long as a part of the outer wall of the guide member 20 can form an arc guide surface 21.

[0032] In one embodiment, as Figure 2 shown, the number of the guide members 20 is configured as two. One of the guide members 20 is arranged close to the hole wall on one side of the through hole 11 along the length direction of the installation pipe 10, and the other guide member 20 is arranged close to the hole wall on the other side of the through hole 11 along the length direction of the installation pipe 10. The arc guide surfaces 21 on the two guide members 20 are arranged oppositely and enclose an assembly space 23 for the electric heating tape 200 to pass through.

[0033] Specifically, the two guide members 20 are defined as a left guide member 24 and a right guide member 25 respectively. When the electric heating tape 200 extends from right to left along the length direction of the installation pipe 10 inside the installation pipe 10 to the through hole 11, under the stretching action of the operator, the arc guide surface 21 on the right guide member 25 can support and guide the electric heating tape 200 to bend along its own thickness direction. Since the material of the electric heating tape 200 is relatively hard, the bent electric heating tape 200 will rebound towards the left guide member 24 and abut against the arc guide surface 21 of the left guide member 24.

[0034] Further, along the length direction of the installation pipe 10, the length of the assembly space 23 is D1, and the thickness of the electric heating tape 200 is H, and 4H ≤ D1 ≤ 6H. It can be understood that the larger D1 is, the more convenient it is to pull out the electric heating tape 200 from the assembly space 23. However, if D1 is too large, the corresponding through hole 11 also needs to be larger, which may lead to a reduction in the strength of the installation pipe 10. Therefore, by setting 4H ≤ D1 ≤ 6H, it is both convenient to pull out the electric heating tape 200 from the assembly space 23 and beneficial to avoid a reduction in the strength of the installation pipe 10. For example, the value of D1 can be 4H, 4.5H, 5H, 5.5H, 5.55H, or 6H, etc., which can be specifically set according to actual requirements as long as it is within the above range.

[0035] Furthermore, along the length direction of the installation pipe 10, the maximum distance between each arc-shaped guiding surface 21 and the hole wall of the through hole 11 close to it is D2, and 4.5 ≤ D2 ≤ 5.5 mm. It can be understood that the larger D2 is, when the electric heating tape 200 passes through the assembly space 23, the gap between the electric heating tape 200 and the left and right two hole walls of the through hole along the length direction of the installation pipe 10 is larger. However, if D2 is too large, it means that the volume of the guiding member 20 is relatively larger, which may cause the guiding member 20 to occupy too much space in the installation pipe 10 and is not conducive to laying the electric heating tape 200 in the installation pipe 10. Therefore, by setting 4.5 mm ≤ D2 ≤ 5.5 mm, it is beneficial to ensure that while avoiding interference between the electric heating tape 200 and the left and right two hole walls of the through hole along the length direction of the installation pipe 10, it can also prevent the guiding member 20 from occupying too much space in the installation pipe 10. For example, the value of D2 can be 4.5 mm, 4.56 mm, 5 mm, 5.5 mm, etc., which can be specifically set according to actual requirements as long as it is within the above range.

[0036] Of course, in other embodiments, arc-shaped guiding surfaces 21 can also be provided near the upper and lower two hole walls of the through hole 11 along the thickness direction of the installation pipe 10 to prevent the electric heating tape 200 from being cut by the upper and lower two hole walls of the through hole 11.

[0037] Optionally, the installation pipe 10 is configured as a steel pipe. The steel pipe has good structural strength and good heat conduction performance, which is beneficial for the electric heating tape to transfer heat.

[0038] Optionally, in one embodiment, as Figure 2 shown, the top wall and the bottom wall of the installation pipe 10 are both configured as flat plates, and the two side walls of the installation pipe 10 are configured as arc-shaped plates. Along the thickness direction of the installation pipe 10, one side hole wall of the through hole 11 is located at the junction of the top wall and the side wall of the installation pipe 10, and the other side hole wall of the through hole 11 is located at the junction of the bottom wall and the side wall of the installation pipe 10.

[0039] Since the air valve generally includes a plurality of valve blade assemblies 101, and the side walls 12 of the mounting pipes 10 of each valve blade assembly 101 abut against each other and are capable of relative movement with the side walls 12 of the mounting pipes 10 of adjacent valve blade assemblies 101, it is beneficial to set the side wall 12 as an arc-shaped plate to reduce the friction between the mounting pipes 10 of adjacent valve blade assemblies. Moreover, by setting that along the thickness direction of the mounting pipe 10, one side wall of the through hole 11 is located at the junction of the top wall 13 and the side wall 12 of the mounting pipe 10, and the other side wall of the through hole 11 is located at the junction of the bottom wall 14 and the side wall 12 of the mounting pipe 10, it can ensure that the through hole 11 has a sufficiently large width along the thickness direction of the mounting pipe 10.

[0040] Please refer to Figures 2 to 4 , this application also provides a valve blade assembly 101, which includes an electric heating tape 200, a first valve blade 300, a second valve blade 400, and the electric heating tape wiring structure 100 described in any one of the above embodiments. The electric heating tape wiring structure 100 is installed between the first valve blade 300 and the second valve blade 400.

[0041] Among them, as Figure 6 shown, the electric heating tape 200 includes a conductor 210 and a sheath 220 covering the outer periphery of the conductor. The conductor 210 includes a plurality of wire cores 211 and a core tape 212 wrapped outside the wire cores 211.

[0042] In one embodiment, as Figure 4 shown, the valve blade assembly 101 further includes a rotating shaft 30. The rotating shaft 30 is installed between the first valve blade 300 and the second valve blade 400. Two through holes 31 are formed in the rotating shaft 30 at intervals along its own length direction. There are two mounting pipes 10, and the two mounting pipes 10 are respectively located on both sides of the rotating shaft 30. The through holes 11 are opened on the side walls of each mounting pipe 10 facing the rotating shaft 30 and are arranged in one-to-one correspondence with the through holes 31; the electric heating tape 200 is wound between the two mounting pipes 10 through the through holes 11 and the through holes 31 to form a square structure. Moreover, the first valve blade 300 and the second valve blade 400 are respectively fixedly connected to the rotating shaft 30 and the two mounting pipes 10. Among them, the rotating shaft 30 is used to drive the valve blade assembly 101 to rotate, and both parts of the valve blade assembly 101 located on both sides of the rotating shaft 30 can be heated by the electric heating tape 200.

[0043] Specifically, please refer to Figure 4, the two mounting tubes 10 are respectively located at the upper and lower sides of the rotating shaft 30 along the radial direction of the rotating shaft 30. The routing process of the electric heating belt 200 is as follows: first, along the length direction of the rotating shaft 30, the electric heating belt 200 extends from one end of the rotating shaft 30 into the interior of the rotating shaft 30, then extends from the through hole 31 located on the left, then enters the upper mounting tube 10 through the corresponding through hole 11 and extends along the length direction of the mounting tube 10, further extends from another through hole of the upper mounting tube 10, and passes downward through another through hole 31 of the rotating shaft 30, then enters the lower mounting tube 10 through the corresponding through hole 11 of the lower mounting tube 10 and extends therein, then extends through another through hole 11 of the lower mounting tube 10 and returns to the initial through hole 31.

[0044] Furthermore, the two mounting tubes 10 are symmetrically arranged about the rotating shaft 30 , so that the valve blade assembly 101 is heated more evenly and the valve blade assembly 101 can rotate more stably around the rotating shaft 30 .

[0045] See also Figure 1 The present application also provides a wind valve 1, which includes the valve blade assembly 101 described in any one of the above embodiments.

[0046] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0047] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. An electric heating tape wiring structure for installing an electric heating tape (200), characterized in that, The electric heating tape routing structure (100) includes a mounting pipe (10). A through hole (11) is formed in a side wall (12) of the mounting pipe (10). The mounting pipe (10) is provided with a guiding member (20), and the guiding member (20) is disposed near at least one side wall of the through hole (11) along the length direction of the mounting pipe (10). The guiding member (20) has an arc guiding surface (21), and the arc guiding surface (21) is used for fitting the electric heating tape (200). Moreover, the projection of the through hole (11) along the width direction of the mounting pipe (10) covers the projection of the arc guiding surface (21) along the width direction of the mounting pipe (10).

2. The wire routing structure of the electric heating belt according to claim 1, wherein, The guiding member (20) is configured as a cylinder, and two ends of the guiding member (20) are respectively connected to a top wall (13) and a bottom wall (14) of the mounting pipe (10).

3. The wire routing structure of the electric heating belt according to claim 1, wherein The number of the guiding members (20) is configured as two. One guiding member (20) is disposed near one side wall of the through hole (11) along the length direction of the mounting pipe (10), and the other guiding member (20) is disposed near the other side wall of the through hole (11) along the length direction of the mounting pipe (10). The arc guiding surfaces (21) on the two guiding members (20) are oppositely disposed and enclose an assembly space (23) for the electric heating tape (200) to pass through.

4. The wire routing structure of the electric heating belt according to claim 3, wherein Along the length direction of the mounting pipe (10), the length of the assembly space (23) is D1, and the thickness of the electric heating tape (200) is H. Moreover, 4H ≤ D1 ≤ 6H.

5. The wire routing structure of the electric heating belt according to claim 3, characterized in that Along the length direction of the mounting pipe (10), the maximum distance between each arc guiding surface (21) and the hole wall of the through hole (11) adjacent thereto is D2. Moreover, 4.5 mm ≤ D2 ≤ 5.5 mm.

6. The wire routing structure of the electric heating belt according to any one of claims 1-5, characterized in that, The mounting pipe (10) is configured as a steel pipe. The top wall (13) and the bottom wall (14) of the mounting pipe (10) are both configured as flat plates, and the two side walls (12) of the mounting pipe (10) are configured as arc-shaped plates. Along the thickness direction of the mounting pipe (10), one side hole wall of the through hole (11) is located at the junction of the top wall (13) and the side wall (12) of the mounting pipe (10), and the other side hole wall of the through hole (11) is located at the junction of the bottom wall (14) and the side wall (12) of the mounting pipe (10).

7. A valve vane assembly, characterized in that, The valve vane assembly includes an electric heating tape (200), a first valve vane (300), a second valve vane (400), and the electric heating tape routing structure (100) according to any one of claims 1-6. The electric heating tape routing structure (100) is installed between the first valve vane (300) and the second valve vane (400).

8. The valve vane assembly according to claim 7, wherein, The valve vane assembly further includes a rotating shaft (30). The rotating shaft (30) is installed between the first valve vane (300) and the second valve vane (400). Two through holes (31) are formed in the rotating shaft (30) and are spaced apart along its own length direction. The installation pipes (10) are configured in two numbers. The two installation pipes (10) are respectively located on both sides of the rotating shaft (30). The through holes (11) are formed in the side walls (12) of each installation pipe (10) facing the rotating shaft (30) and are arranged in one-to-one correspondence with the through holes (31). The electric heating tape (200) is wound between the two installation pipes (10) through the through holes (11) and the through holes (31) to form a square structure. Moreover, the first valve vane (300) and the second valve vane (400) are respectively fixedly connected to the rotating shaft (30) and the two installation pipes (10).

9. The valve vane assembly according to claim 7, wherein, The electric heating tape (200) includes a conductor (210) and a sheath (220) covering the outer periphery of the conductor.

10. A damper, characterized in that, The air valve includes the valve vane assembly according to any one of claims 7 to 9.

Images