Insulation chain wheel structure and star valve device

Abstract

The utility model discloses an insulating chain wheel structure and a star-shaped valve device, the insulating chain wheel structure comprises a first split body, chain wheel teeth are formed on the outer edge of the first split body, and a first through hole is formed in the center of the first split body; the second split body and the first split body are both made of high-hardness metal materials, the second split body and the first split body are detachably and fixedly connected, a second through hole used for transmission is formed in the center of the second split body, the second split body comprises a main body part and a connecting part, and the connecting part is connected into the first through hole; and the insulating part is arranged between the first split body and the second split body. The insulating chain wheel structure is high in hardness and good in insulating effect, can continuously run for a long time, and is not easy to damage.

Description

Technical Field

[0001] This utility model relates to the field of star valve technology, specifically to an insulated sprocket structure and a star valve device. Background Technology

[0002] A star valve typically refers to a rotary valve with a star-shaped rotor (composed of multiple blades, resembling a star wheel). The rotation of the star rotor enables the quantitative discharge of materials or the control of fluid flow. A sprocket and chain drive structure is installed at the end of the star rotor. External power (such as a motor) drives the sprocket and chain drive structure to rotate, thereby controlling the opening, closing, or rotational speed of the star valve.

[0003] The existing sprockets that are connected to external power sources are usually made of a single piece of plastic insulation material (such as phenolic resin). When the material has a high moisture content, the insulation material will break after running continuously for a certain period of time, which will lead to the failure of the sprocket and affect the operation of the star valve. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an insulated sprocket structure and a star valve device. The insulated sprocket structure has high hardness and good insulation effect, and can operate continuously for a long time without being easily damaged.

[0005] The specific technical solution provided by this utility model is as follows:

[0006] In a first aspect, an insulated sprocket structure is provided, comprising:

[0007] The first component is made of a high-hardness metal material. The outer edge of the first component has sprocket teeth, and the center of the first component has a first through hole.

[0008] The second part is made of a high-hardness metal material. The second part is detachably and fixedly connected to the first part. A second through hole for transmission is formed in the center of the second part. The second part includes a main body and a connecting part, and the connecting part is connected to the first through hole.

[0009] An insulating part is disposed between the first part and the second part.

[0010] As a preferred embodiment of the above solution, the insulating part includes:

[0011] The first insulating part is fixed to the connecting part and disposed between the connecting part and the inner wall of the first through hole;

[0012] The second insulating part is fixed to the main body and disposed between the main body and the first part.

[0013] As a preferred embodiment of the above solution, the materials of the first insulating part and the second insulating part include polyamide fiber or polytetrafluoroethylene.

[0014] As a preferred embodiment of the above solution, the first insulating part is a bushing fixedly sleeved on the connecting part, and the material of the first insulating part is polyamide fiber.

[0015] The second insulating part is a gasket that presses against the first part, and the material of the second insulating part is polytetrafluoroethylene.

[0016] As a preferred embodiment of the above solution, the first through hole, the second through hole, and the connecting portion all extend along the axial direction of the insulating sprocket structure;

[0017] The first through hole is inserted into the first insulating part, and the main body and the second insulating part are detachably and fixedly connected to the first split part through a connecting structure.

[0018] As a preferred embodiment of the above solution, the connection structure includes:

[0019] First connecting hole, multiple first connecting holes are provided on the first split body;

[0020] Second connecting holes, a plurality of second connecting holes are provided in the second insulating part;

[0021] Third connecting hole, multiple third connecting holes are provided in the main body;

[0022] Threaded parts are connected to the corresponding first connecting hole, second connecting hole and third connecting hole.

[0023] As a preferred embodiment of the above solution, the main body is provided with a fixing hole extending radially along the insulating sprocket structure, and the two ends of the fixing hole penetrate the outer sidewall of the main body and the second through hole, respectively.

[0024] As a preferred embodiment of the above scheme, a keyway is provided on the inner wall of the second through hole, and the fixing hole includes a first fixing hole with one end connected to the keyway.

[0025] As a preferred embodiment of the above scheme, the second and first parts are made of high-hardness steel.

[0026] This invention sets the insulated sprocket structure as two detachable and fixedly connected split structures – a first split and a second split – both made of high-hardness metal materials, thereby greatly improving the hardness of the entire sprocket structure and preventing damage during continuous long-term operation. By setting an insulating part between the first and second splits, the insulation effect of the entire sprocket structure can be effectively guaranteed, enabling the sprocket structure to operate effectively.

[0027] In a second aspect, a star valve device is provided, including a drive shaft, a chain, a transmission sprocket, a star valve, and the above-mentioned insulating sprocket structure. The drive shaft is used to drive the insulating sprocket structure to rotate. The drive shaft is fixedly connected to the second through hole of the second part. The chain is used to connect the sprocket teeth of the first part and the sprocket teeth of the transmission sprocket. The star valve includes a star rotor with one end connected to the transmission sprocket. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the insulated sprocket structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the first component of this utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the second component and the insulating part of this utility model;

[0032] Figure 4 This is a cross-sectional view of the insulated sprocket structure of this utility model;

[0033] Figure 5 This is a schematic diagram of the star valve device of this utility model;

[0034] Figure 6 for Figure 5 A partial structural diagram. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," and "bottom," etc., used in this specification to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Example 1

[0038] The insulating sprocket structure described in this utility model, such as Figure 1 As shown, the sprocket includes a first component 1 and a second component 2. Both components 1 and 2 are made of high-hardness metallic materials, specifically high-hardness steels such as 45# carbon steel, alloy structural steel, high-carbon tool steel, and special wear-resistant steel. In this embodiment, both components 1 and 2 are made of 45# carbon steel, a commonly used medium-carbon steel with high hardness and wear resistance. 45# carbon steel does not require complex surface treatments (such as hard anodizing for aluminum alloys and plating for copper alloys); heat treatment alone is sufficient to meet the sprocket's tooth surface hardness requirements, resulting in strong process stability and high reliability. Through heat treatments such as quenching and tempering, 45# carbon steel achieves high hardness, enabling the sprocket to resist tooth surface wear and impact, effectively resisting contact stress and sliding friction during chain meshing. The balanced strength and toughness of 45# carbon steel allows it to withstand alternating bending, shearing, and impact loads during transmission, reducing the risk of fatigue fracture. 45# carbon steel has stable performance in dry environments, but it is prone to rust and corrosion in humid environments and has poor corrosion resistance. Therefore, appropriate surface treatment can improve its wear resistance and corrosion resistance, making it better suited to certain working environments.

[0039] The first component 1 and the second component 2 are detachably fixedly connected, which facilitates torque transmission while allowing for easy assembly and disassembly, and makes disassembly and maintenance of the first component 1 and the second component 2 convenient. Figure 1 , Figure 2 As shown, the outer edge of the first segment 1 has two rows of sprocket teeth 11, which can be connected to a double-row chain drive. A first through hole 12 is formed in the center of the first segment 1. Figure 1 , Figure 3As shown, the center of the second part 2 has a second through hole 21 for transmission. Specifically, the second through hole 21 can be connected to the drive shaft of the geared motor coaxial with the insulated sprocket structure. The second part 2 includes a main body 22 and a connecting part 23. The main body 22 and the connecting part 23 can be integrally formed. The connecting part 23 is connected to the first through hole 21.

[0040] like Figure 1 As shown, the insulated sprocket structure also includes an insulating part 3, which is disposed between the first part 1 and the second part 2. Since both the first part 1 and the second part 2 are made of high-hardness metal material, an insulating structure is required between the first part 1 and the second part 2 to avoid forming a passage in the sprocket drive structure.

[0041] like Figure 1 , Figure 3 As shown, the insulating part 3 includes a first insulating part 31 and a second insulating part 32. The first insulating part 31 is fixed to the connecting part 23 and disposed between the connecting part 23 and the inner wall of the first through hole 12; the second insulating part 32 is fixed to the main body part 22 and disposed between the main body part 22 and the first split part 1.

[0042] The materials of the first insulating part 31 and the second insulating part 32 include, but are not limited to, polyamide fiber or polytetrafluoroethylene. That is, the material of the first insulating part 31 can be set as polyamide fiber or polytetrafluoroethylene, and the material of the second insulating part 32 can also be set as polyamide fiber or polytetrafluoroethylene.

[0043] In a preferred embodiment, such as Figure 1 As shown, the first insulating part 31 is a bushing 31 fixedly sleeved on the connecting part 23, and the material of the first insulating part 31 is polyamide fiber. Polyamide fiber (commonly known as nylon, such as nylon 6, nylon 66, etc.) is a common synthetic fiber with properties such as wear resistance, high temperature resistance, and chemical corrosion resistance. Polyamide fiber has excellent electrical insulation properties, meeting the requirements of sprocket anti-conductive properties. At the same time, polyamide fiber has high strength and fatigue resistance, and is wear-resistant and self-lubricating, reducing friction loss. Polyamide fiber has good low-temperature adaptability, maintaining a certain degree of flexibility and mechanical properties in cold environments, and is not easily brittle. It is oil and solvent resistant, suitable for complex working conditions. It maintains good performance in general humidity environments, and has a certain degree of hygroscopicity, absorbing a certain amount of moisture in humid environments to keep the fiber surface soft. In addition, polyamide fiber is lightweight, easy to process, and low in cost, which can reduce the overall weight of the sprocket and reduce manufacturing costs.

[0044] In a preferred embodiment, such as Figure 1As shown, the second insulating part 32 is a gasket 32 ​​pressed against the first component 1, and the material of the second insulating part 32 is polytetrafluoroethylene (PTFE). PTFE is a perfluorinated polymer material, known as the "King of Plastics" due to its unique chemical structure and properties. PTFE possesses excellent resistance to extreme environments, top-level electrical insulation, ultra-low friction characteristics, and chemical inertness, making it particularly suitable for use in harsh working conditions requiring high temperatures, strong corrosion, high cleanliness, or high insulation. PTFE can be used for extended periods in a temperature range of -200℃ to 260℃, maintaining good flexibility at low temperatures and resisting brittleness; it also maintains certain physical properties at high temperatures, without rapidly aging or deforming due to excessive heat. PTFE gaskets are non-absorbent and have good moisture resistance; their performance is unaffected in high humidity environments or underwater, and they do not swell, deform, or lose mechanical strength due to moisture absorption. PTFE also has an extremely low coefficient of friction and good self-lubricating properties, making it suitable for various environments requiring reduced friction.

[0045] like Figure 1 As shown, the first through hole 12, the second through hole 21, and the connecting part 23 all extend along the axial direction of the insulating sprocket structure. The first through hole 12 is inserted into the first insulating part 31. The main body part 22 and the second insulating part 32 are detachably and fixedly connected to the first split 1 through a connecting structure. The second insulating part 32 is sandwiched between the first split 1 and the main body part 22 and is in close contact with the side walls of the first split 1 and the main body part 22. The inner and outer edges of the cross-section of the part of the first split 1 excluding the sprocket teeth, the outer edge of the cross-section of the second split 2, and the inner and outer edges of the cross-sections of the first insulating part 31 and the second insulating part 32 are all circular. The first split 1, the second split 2, the first insulating part 31, and the second insulating part 32 are all coaxially arranged.

[0046] like Figure 1As shown, the connection structure includes a first connecting hole 41, a second connecting hole 42, a third connecting hole 43, and a threaded component (not shown). Multiple first connecting holes 41 are formed on the first sub-body 1, multiple second connecting holes 42 are formed on the second insulating part 32, and multiple third connecting holes 43 are formed on the main body 22. The threaded component connects to the corresponding first connecting hole 41, second connecting hole 42, and third connecting hole 43. The first connecting hole 41 is a through hole on the first sub-body 1, the second connecting hole 42 is a through hole on the second insulating part 32, and the third connecting hole 43 is a through hole on the main body 22. The cross-sections of the first connecting hole 41, second connecting hole 42, and third connecting hole 43 are circular and of equal size. The corresponding first connecting hole 41, second connecting hole 42, and third connecting hole 43 are axially connected to allow the threaded component to pass through. The threaded components can be mating bolts and nuts. The bolts pass sequentially through the first connecting hole 41, the second connecting hole 42, and the third connecting hole 43, and are then tightened by the nuts, thereby fixing the first part 1 and the second part 2 together to effectively transmit torque, while providing high rigidity and stability, capable of withstanding large loads, and easy to assemble and disassemble. Insulating gaskets (not shown) can be provided on the circumferential direction of the inner wall of the first connecting hole 41, on the circumferential direction of the inner wall of the third connecting hole 43, between the end of the bolt and the first part 1, and between the nut and the main body 22 to prevent the formation of passageways. The insulating gaskets can be made of polyamide fiber.

[0047] like Figure 4 As shown, the main body 22 is provided with a fixing hole 221 extending radially along the insulating sprocket structure. The two ends of the fixing hole 221 pass through the outer sidewall of the main body 22 and the second through hole 21, respectively.

[0048] In a preferred embodiment, such as Figure 4 As shown in the cross-sectional view of the insulated sprocket structure at the main body 22, the third connecting hole 43 and the fixing hole 221 are evenly distributed on the main body 22. The angle between the line connecting the center of an adjacent third connecting hole 43 and the center of the main body 22 is 30 degrees. The central axis of the fixing hole 221 passes through the center of the main body 22, and the angle between the line connecting the central axis of the fixing hole 221 and the center of the main body 22 and the line connecting the center of the adjacent third connecting hole 43 and the center of the main body 22 is 30 degrees. There can be two fixing holes 221 and ten third connecting holes 43. The third connecting holes 43 and the fixing holes 221 form a 360-degree circle evenly distributed on the main body 22. This allows the threaded parts in the third connecting holes 43 to be evenly stressed, avoiding excessive stress on a single threaded part. It is understandable that the distribution of the first connecting hole 41 on the first part 1, the distribution of the second connecting hole 42 on the second insulating part 32, and the distribution of the third connecting hole 43 on the main body part 22 are the same.

[0049] like Figure 4As shown, a keyway 211 is provided on the inner wall of the second through hole 21, and the fixing hole 221 includes a first fixing hole 222, one end of which communicates with the keyway 211. A key is formed on the drive shaft of the geared motor to mate with the keyway 211. During connection, the key is embedded in the keyway 211 to achieve axial connection between the drive shaft and the insulated sprocket structure to transmit torque. The structure of the key and keyway 211 includes, but is not limited to, flat keys, semi-circular keys, wedge keys, etc., which can be reasonably selected according to the transmitted load, direction of movement, etc. A set screw (not shown) can be installed in the fixing hole 221. One end of the set screw abuts against the surface of the drive shaft, using friction and pressure to prevent axial displacement between the insulated sprocket structure and the drive shaft. One end of the first fixing hole 222 communicates with the keyway 211, which can more effectively fix the insulated sprocket structure and the drive shaft, further preventing axial displacement between the insulated sprocket structure and the drive shaft.

[0050] This invention sets the insulated sprocket structure as two detachable and fixedly connected split structures – a first split 1 and a second split 2. Both the first split 1 and the second split 2 are made of high-hardness metal materials, which greatly improves the hardness of the entire sprocket structure and prevents it from breaking under continuous long-term operation. By setting an insulating part 3 between the first split 1 and the second split 2, the insulation effect of the entire sprocket structure can be effectively guaranteed, enabling the sprocket structure to operate effectively.

[0051] Example 2

[0052] This utility model provides a star valve device, such as Figure 5 , Figure 6 As shown, it includes a drive shaft 5, a chain 6, a transmission sprocket 7, a star valve 8, and the above-mentioned insulating sprocket structure. The drive shaft 5 is used to drive the insulating sprocket structure to rotate. The drive shaft 5 is fixedly connected to the second through hole 21 of the second part 2. The chain 6 is used to connect the sprocket teeth 11 of the first part 1 and the sprocket teeth 71 of the transmission sprocket 7. The star valve 8 includes a star rotor (not shown) with one end connected to the transmission sprocket 7.

[0053] The drive shaft 5 can be the output shaft of the reducer of the geared motor 9. The drive shaft 5 is connected to the second through hole 21 of the second part 2 and drives the insulating sprocket structure to rotate. The insulating sprocket structure drives the transmission sprocket 7 to rotate through the chain 6. The transmission sprocket 7 drives the star rotor to rotate. The star rotor realizes the quantitative discharge of materials or the on / off control of fluid through the rotation of the blades.

[0054] The star valve device also includes an alarm system (not shown). If a conductive path is formed at any position of the star valve device, the alarm system will be triggered. The insulated sprocket structure of this utility model can effectively ensure the insulation effect of the entire sprocket structure by setting the insulating part 3, so that the entire star valve device can operate effectively. At the same time, the first part 1 and the second part 2 are both made of high-hardness metal materials, which greatly improves the hardness of the entire sprocket structure. It can be protected from damage even when the material has a high moisture content and operates continuously for a long time, so that the entire star valve device can operate effectively for a long time.

[0055] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0056] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An insulated sprocket structure, characterized in that, include: The first part (1) is made of a high-hardness metal material. The outer edge of the first part (1) is formed with sprocket teeth (11), and the center of the first part is formed with a first through hole (12). The second part (2) is made of a high-hardness metal material. The second part (2) is detachably fixed to the first part (1). The center of the second part (2) has a second through hole (21) for transmission. The second part (2) includes a main body (22) and a connecting part (23). The connecting part (23) is connected to the first through hole (12). An insulating part (3) is disposed between the first part (1) and the second part (2).

2. The insulated sprocket structure according to claim 1, characterized in that, The insulating part (3) includes: The first insulating part (31) is fixed to the connecting part (23) and disposed between the connecting part (23) and the inner wall of the first through hole (12); The second insulating part (32) is fixed to the main body part (22) and disposed between the main body part (22) and the first split part (1).

3. The insulated sprocket structure according to claim 2, characterized in that, The materials of the first insulating part (31) and the second insulating part (32) include polyamide fiber or polytetrafluoroethylene.

4. The insulated sprocket structure according to claim 2, characterized in that, The first insulating part (31) is a bushing fixedly sleeved on the connecting part (23), and the material of the first insulating part (31) is polyamide fiber; The second insulating part (32) is a gasket pressed against the first part (1), and the material of the second insulating part (32) is polytetrafluoroethylene.

5. The insulated sprocket structure according to claim 2, characterized in that, The first through hole (12), the second through hole (21) and the connecting part (23) all extend along the axial direction of the insulating sprocket structure; The first through hole (12) is inserted into the first insulating part (31), and the main body (22) and the second insulating part (32) are detachably and fixedly connected to the first split body (1) through a connecting structure.

6. The insulated sprocket structure according to claim 5, characterized in that, The connection structure includes: First connecting hole (41), a plurality of first connecting holes (41) are provided on the first split body (1); Second connecting hole (42), a plurality of second connecting holes (42) are provided on the second insulating part (32); Third connecting hole (43), a plurality of the third connecting holes (43) are provided on the main body (22); A threaded component, which is connected to the corresponding first connecting hole (41), second connecting hole (42) and third connecting hole (43).

7. The insulated sprocket structure according to claim 1, characterized in that, The main body (22) is provided with a fixing hole (221) extending radially along the insulating sprocket structure. The two ends of the fixing hole (221) penetrate the outer sidewall of the main body (22) and the second through hole (21), respectively.

8. The insulated sprocket structure according to claim 7, characterized in that, The inner wall of the second through hole (21) is provided with a keyway (211), and the fixing hole (221) includes a first fixing hole (222) with one end connected to the keyway (211).

9. The insulated sprocket structure according to any one of claims 1-8, characterized in that, The second component (2) and the first component (1) are made of high-hardness steel.

10. A star-shaped valve device, characterized in that, The device includes a drive shaft (5), a chain (6), a transmission sprocket (7), a star valve (8), and an insulated sprocket structure as described in any one of claims 1-9. The drive shaft (5) is used to drive the insulated sprocket structure to rotate. The drive shaft (5) is fixedly connected to the second through hole (21) of the second part (2). The chain (6) is used to connect the sprocket teeth (11) of the first part (1) and the sprocket teeth of the transmission sprocket (7). The star valve (8) includes a star rotor with one end connected to the transmission sprocket (7).

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