A coupling for the regulating valve of a ZK series air conditioner steam humidifier.

Abstract

This application discloses a coupling for a regulating valve in a ZK series air conditioner steam humidifier, relating to the field of coupling technology. It includes a connecting bolt, a spring, a first transmission block, and a second transmission block. The driving and driven shafts of the regulating valve transmit torque through static friction generated between the contact surfaces of the first and second transmission blocks and the shafts. The maximum transmitted torque can be flexibly adjusted within a specific range. This adjustment is achieved by changes in pressure on the contact surfaces, which is structurally applied by a spring. The spring clamping force is adjusted by rotating the connecting bolt. After adjustment, the spring clamping force and the maximum static friction force of the contact surfaces are fixed. When the working torque exceeds the allowable value, slippage occurs between the contact surfaces, causing the driving and driven shafts to disengage promptly. This provides reliable safety protection for the transmission system of the regulating valve and actuator mechanism, thereby preventing damage to transmission components and transmission failure.

Description

Technical Field

[0001] This application relates to the field of coupling technology, specifically a coupling for the regulating valve of a ZK series air conditioner steam humidifier. Background Technology

[0002] The ZK series air conditioner steam humidifier regulating valve is a precision control device designed specifically for air conditioning systems. This regulating valve is typically composed of an electric actuator and a valve body. Its core function is to adjust the steam output in real time according to the ambient humidity requirements, ensuring that the air supply humidity of the air conditioning system remains stable within the set range.

[0003] The coupling is the core transmission component that connects the electric actuator of the regulating valve to the valve body and valve core drive shaft. Its core function is to ensure precise power transmission while compensating for axial deviations (such as radial offset and angular offset) between the actuator and the valve body during installation and operation through its own structure, so as to avoid jamming and component wear caused by hard connection.

[0004] The coupling of the regulating valve in a traditional steam humidifier is prone to overload during use, which can damage the transmission components and lead to transmission failure. Utility Model Content

[0005] The main purpose of this application is to provide a coupling for the regulating valve of the ZK series air conditioner steam humidifier, which aims to solve the technical problem that the surface of the coupling of the traditional steam humidifier regulating valve will gradually wear during long-term use, resulting in a decrease in the fitting accuracy between the components, which in turn leads to a decrease in humidity regulation accuracy and affects the humidification effect.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A coupling for the regulating valve of a ZK series air conditioner steam humidifier, comprising:

[0008] A connecting bolt, wherein a spring is fitted around the outer periphery of the connecting bolt;

[0009] The first transmission block has a first threaded hole along the Y-axis that is adapted to the connecting bolt;

[0010] The second transmission block has a light hole and a second screw hole corresponding to the first screw hole along the Y-axis direction. The diameters of the second screw hole and the first screw hole are the same and smaller than the diameter of the spring. The diameter of the light hole is larger than the diameter of the spring.

[0011] Optionally, a first semi-cylindrical hole is provided on one side of the first transmission block along the X-axis direction, and a first guide semi-hole is provided at both ends of the first semi-cylindrical hole, and the first guide semi-hole and the first semi-cylindrical hole are connected.

[0012] Optionally, a second semi-cylindrical hole is provided on one side of the second transmission block along the X-axis direction, and a second guide semi-hole is provided at both ends of the second semi-cylindrical hole, and the second guide semi-hole and the second semi-cylindrical hole are connected.

[0013] Optionally, the first semi-cylindrical hole and the second semi-cylindrical hole together form a cylindrical hole, and the first guide half hole and the second guide half hole together form a conical guide hole, wherein the cylindrical hole and the conical guide hole are lined with copper sleeves.

[0014] Optionally, the first and second transmission blocks are made of flame-retardant bakelite.

[0015] Optionally, the first screw hole is distributed in two at intervals along the Z-axis; the optical hole and the second screw hole are each distributed in two at intervals along the Z-axis.

[0016] Optionally, the head of the connecting bolt has a slot.

[0017] The technical solution provided in this application may include the following beneficial effects:

[0018] In this application, the driving and driven shafts of the control valve can be inserted and fixed at the center of the coupling. Torque transmission is achieved by the static friction generated between the contact surfaces of the first and second transmission blocks and the shafts. The maximum torque transmitted can be flexibly adjusted within a specific range. This adjustment process is aided by the pressure changes on the contact surfaces, which are structurally applied by a spring. The spring's clamping force can be adjusted by rotating the connecting bolt to adjust its screw-in depth. Once adjusted, the connecting bolt is fixed, and the spring's clamping force remains constant. The maximum static friction of the contact surfaces is also fixed and cannot increase with the increase of the working torque. When the working torque exceeds the allowable value and the required static friction exceeds the maximum static friction, the static friction can no longer maintain the synchronization of the driving and driven shafts, and slippage will occur between the contact surfaces. This causes the driving and driven shafts to disengage in time, thereby providing reliable safety protection for the transmission system of the control valve and actuator mechanism, and thus avoiding damage to transmission components and transmission failure. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the coupling used for the regulating valve of the ZK series air conditioner steam humidifier;

[0021] Figure 2This is a planar schematic diagram of the first transmission block;

[0022] Figure 3 This is a planar schematic diagram of the second transmission block;

[0023] Figure 4 This is a structural diagram of the connecting bolts.

[0024] Reference numerals: 1. Connecting bolt; 2. Spring; 3. First transmission block; 4. First screw hole; 5. Second transmission block; 6. Smooth hole; 7. First semi-cylindrical hole; 8. First guide half hole; 9. Second semi-cylindrical hole; 10. Second guide half hole; 11. Slotted groove; 12. Second screw hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] Example 1:

[0027] See Figures 1 to 4 A coupling for the regulating valve of a ZK series air conditioner steam humidifier, comprising:

[0028] A connecting bolt 1, wherein a spring 2 is sleeved along the outer periphery of the connecting bolt 1;

[0029] The first transmission block 3 has a first screw hole 4 along the Y-axis that is adapted to the connecting bolt 1;

[0030] The second transmission block 5 has a light hole 6 and a second screw hole 12 corresponding to the first screw hole 4 along the Y-axis direction. The diameter of the second screw hole 12 and the first screw hole 4 are the same and smaller than the diameter of the spring 2. The diameter of the light hole 6 is larger than the diameter of the spring 2.

[0031] Specifically, the diameter of the second screw hole 12 is the same as that of the first screw hole 4 and is smaller than that of the spring 2. The diameter of the smooth hole 6 is larger than that of the spring 2. That is, the diameter of the smooth hole 6 is larger than that of the spring 2, and the diameter of the spring 2 is larger than that of the second screw hole 12 and the first screw hole. The channel formed by the first screw hole 4, the second screw hole 12 and the smooth hole 6 matches the connecting bolt 1. In use, spring 2 is fitted onto connecting bolt 1 and first passes through the light hole 6 of the second transmission block 5. Because the diameter of the light hole 6 is larger than the diameter of spring 2, spring 2 can smoothly enter the interior of the light hole 6. The second screw hole 12 is connected to the light hole 6. Since the diameter of the second screw hole 12 is smaller than the diameter of the light hole 6, a stepped surface is formed. When the threaded section of the bolt is screwed into the second screw hole 12 of the second transmission block 5, the spring 2 cannot enter the second screw hole 12 and the first screw hole 4 because the diameter of the second screw hole 12 is smaller than the diameter of spring 2. Therefore, it is blocked at the stepped surface, that is, the end of spring 2 near the first transmission block 3 will firmly abut against the stepped surface. As the connecting bolt 1 is tightened continuously, the threaded section penetrates into the first screw hole 4, spring 2 is compressed, and the end faces of the first transmission block 3 and the second transmission block 5 gradually fit together and form a coupling.

[0032] Traditional steam humidifier regulating valve couplings are prone to overload during use, leading to damage to transmission components and ultimately transmission failure. In this application, the driving and driven shafts of the regulating valve are threaded and fixed at the coupling shaft center. Torque transmission is achieved through the static friction generated between the contact surfaces of the first transmission block 3 and the second transmission block 5 and the shaft. Furthermore, the maximum transmitted torque can be flexibly adjusted within a specific range. This adjustment is achieved by the pressure variation on the contact surfaces, which is structurally applied by the spring 2. The tightening force of the spring 2 can be adjusted by rotating the connecting bolt 1 to adjust its screw-in depth. Once adjusted, the connecting bolt 1 is fixed, and the tightening force of the spring 2 remains constant. The maximum static friction force of the contact surfaces is also fixed and cannot increase with the increase of the working torque. When the working torque exceeds the allowable value and the required static friction exceeds the maximum static friction, the static friction can no longer maintain the synchronization of the main and driven shafts, and slippage will occur between the contact surfaces, causing the main and driven shaft ends to disengage in time. This provides reliable safety protection for the transmission system of the control valve and actuator mechanism, thereby avoiding damage to transmission components and transmission failure.

[0033] Furthermore, this application not only enables precise torque transmission between coaxial lines, but can also be designed to accommodate torque transmission between parallel and intersecting axes according to actual needs, offering a variety of structural forms and a wide range of applications. In addition, in the event of an overload, the coupling itself and its connected actuator or controller will not be damaged, and it will automatically regain its working capacity after the fault is cleared, without the need to replace parts. Even if wear occurs on the working contact surface, the spring 2 can compensate for it; simply adjusting the connecting bolt 1 ensures the required ultimate torque, greatly simplifying the use and maintenance process.

[0034] Example 2:

[0035] See Figures 1 to 4 Based on Embodiment 1, optionally, a first semi-cylindrical hole 7 is provided on one side of the first transmission block 3 along the X-axis direction, and a first guide semi-hole 8 is provided at both ends of the first semi-cylindrical hole 7, and the first guide semi-hole 8 and the first semi-cylindrical hole 7 are connected; a second semi-cylindrical hole 9 is provided on one side of the second transmission block 5 along the X-axis direction, and a second guide semi-hole 10 is provided at both ends of the second semi-cylindrical hole 9, and the second guide semi-hole 10 and the second semi-cylindrical hole 9 are connected; the first semi-cylindrical hole 7 and the second semi-cylindrical hole 9 together form a cylindrical hole, and the first guide semi-hole 8 and the second guide semi-hole 10 together form a conical guide hole, and the cylindrical hole and the conical guide hole are lined with copper sleeves.

[0036] Specifically, the cylindrical bore and the tapered guide bore together constitute the shaft bore, providing installation space for the drive and driven shafts. Through the cooperation with the shaft (and the inner copper bushing), it ensures that the shaft maintains coaxiality in the coupling. The shaft contacts the transmission block in the cylindrical bore, transmitting the torque of the drive shaft to the driven shaft through static friction. The tapered guide bore has a larger inlet diameter (flared), so if there is a certain deviation between the drive / driven shaft and the center of the coupling during installation, the shaft end can first enter the larger end of the tapered bore, and then gradually and automatically align itself along the tapered surface, ultimately fitting precisely into the center of the coupling. The mating surface between the tapered guide bore and the shaft is an inclined surface, which makes it easier to form uniform contact pressure compared to a straight bore, better transmitting torque or bearing axial force, while reducing local stress concentration. When there is slight relative movement between the shaft and the coupling, such as installation misalignment, slight vibration, or instantaneous slippage due to overload, the copper bushing will wear preferentially, preventing direct scratches on the shaft surface or the cylindrical / guide hole of the transmission block, thus protecting the more expensive shaft. The self-lubricating property of the copper bushing can reduce the frictional resistance between the shaft and the coupling, reduce transmission energy consumption, and prevent local overheating caused by dry friction. The elastic deformation capacity of the copper bushing can compensate for minor machining errors on the shaft surface, improving working accuracy while ensuring sufficient mechanical strength and hardness.

[0037] Optionally, the first transmission block 3 and the second transmission block 5 are made of flame-retardant bakelite.

[0038] Specifically, flame-retardant bakelite is selected for the material structure, and copper sleeves are inlaid on the contact working surfaces to effectively isolate the main and driven shafts through a coupling. When the steam heat in the regulating valve is transferred to the driving shaft, it must pass through the first transmission block 3 and the second transmission block 5 made of bakelite to be transferred to the driven shaft via the coupling. The low thermal conductivity of bakelite causes the heat to attenuate during the transfer process, thereby preventing the transfer of steam heat in the regulating valve to the actuator or control device, and building a solid safety barrier for the control unit.

[0039] Optionally, the first screw hole 4 is distributed in two at intervals along the Z-axis direction; the optical hole 6 and the second screw hole 12 are each distributed in two at intervals along the Z-axis direction.

[0040] Specifically, the positions of the first screw hole 4, the second screw hole 12, and the smooth hole 6 correspond one-to-one to ensure that after the connecting bolt 1 passes through the smooth hole 6 of the second transmission block 5, it can be smoothly screwed into the second screw hole 12 and the first screw hole 4 of the first transmission block 3, avoiding bolt assembly jamming or skew due to misalignment of holes, and ensuring a smooth assembly process. The first screw hole 4, the smooth hole 6, and the second screw hole 12 are distributed at intervals along the Z-axis, which can evenly distribute the load and protect the structural integrity of the bakelite transmission block; the two-point positioning constraint ensures the centering of the two transmission blocks and the accuracy of shaft assembly; at the same time, it can also evenly distribute the pressure of the spring 2 and stabilize the static friction force of the contact surface.

[0041] Optionally, the head of the connecting bolt 1 has a slot 11.

[0042] Specifically, the slot 11 is the engagement interface between the bolt head and the tool. When the tip of the flathead screwdriver is inserted into the slot, torque is applied by rotating the screwdriver. The torque is transmitted to the bolt body through the slot wall, thereby driving the connecting bolt 1 to rotate clockwise (tightening) or counterclockwise (unlocking), ultimately achieving the connection or separation of the connecting bolt 1 from the first screw hole 4.

[0043] In summary, the coupling used in this application for the regulating valve of the ZK series air conditioner steam humidifier has the following beneficial effects: First, it has extremely high operational safety, runs smoothly, and possesses a certain buffering and vibration reduction function, effectively reducing the impact and vibration during equipment operation and ensuring the stability of the overall system. Second, it integrates the advantages and transmission methods of various types of couplings, forming a unique combined structure. It can not only accurately transmit torque between coaxial lines, but also be designed to be suitable for torque transmission between parallel and intersecting axes according to actual needs, with rich and diverse structural forms and extremely wide application range. Third, it has an overload slippage protection mechanism. When an overload occurs, the coupling itself and the actuator or controller connected to it will not be damaged. After the fault is cleared, it can automatically restore its working capacity without replacing parts. Even if the working contact surface is worn, the spring 2 can also play a compensating role. Only the connecting bolt 1 needs to be adjusted to ensure the required limit torque, greatly simplifying the use and maintenance process. Fourth, to improve the stability of the coupling's limit torque, its contact working surface adopts a copper sleeve inlay process, which improves working accuracy while ensuring sufficient mechanical strength and hardness. Fifth, flame-retardant bakelite is selected in terms of material structure, and copper sleeves are inlaid on the contact working surface to effectively isolate the main and driven shafts through the coupling, avoiding the transfer of steam heat in the regulating valve to the actuator or control device, and building a solid safety protection barrier for the control unit.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coupling for ZK series air conditioner steam humidifier regulating valve, characterized in that, include: A connecting bolt, wherein a spring is fitted around the outer periphery of the connecting bolt; The first transmission block has a first threaded hole along the Y-axis that is adapted to the connecting bolt; The second transmission block has a light hole and a second screw hole corresponding to the first screw hole along the Y-axis direction. The diameters of the second screw hole and the first screw hole are the same and smaller than the diameter of the spring. The diameter of the light hole is larger than the diameter of the spring.

2. The coupling for ZK series air conditioner steam humidifier regulating valve according to claim 1, characterized in that, The first transmission block has a first semi-cylindrical hole on one side along the X-axis, and first guide semi-holes are provided at both ends of the first semi-cylindrical hole, and the first guide semi-holes and the first semi-cylindrical hole are connected.

3. The coupling for ZK series air conditioner steam humidifier regulating valve according to claim 2, characterized in that, The second transmission block has a second semi-cylindrical hole on one side along the X-axis, and a second guide semi-hole is formed at both ends of the second semi-cylindrical hole, and the second guide semi-hole and the second semi-cylindrical hole are connected.

4. The coupling for ZK series air conditioner steam humidifier regulating valve according to claim 3, characterized in that, The first semi-cylindrical hole and the second semi-cylindrical hole together form a cylindrical hole, and the first guide half hole and the second guide half hole together form a conical guide hole. The cylindrical hole and the conical guide hole are lined with copper sleeves.

5. The coupling for ZK series air conditioner steam humidifier regulating valve according to claim 1, characterized in that, The first and second transmission blocks are made of flame-retardant bakelite.

6. The coupling for ZK series air conditioner steam humidifier regulating valve according to claim 1, characterized in that, The first screw hole has two spacings along the Z-axis; the optical hole and the second screw hole each have two spacings along the Z-axis.

7. The coupling for ZK series air conditioner steam humidifier regulating valve according to claim 1, characterized in that, The head of the connecting bolt has a slot.

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