Hot air control valve opening degree control device

Abstract

The invention relates to the technical field of coal mill hot air control valves, in particular to a hot air control valve opening degree control device which comprises an air adjusting mechanism which comprises a frame body, a rotating shaft, an air door and a shaft sleeve. The control mechanism comprises a control cylinder, linkage teeth, a control rod and a direction adjusting block, the control cylinder, the linkage teeth and the control rod are arranged on the end face of the rotating shaft, the direction adjusting block is movably arranged on the end face of the control cylinder, and the direction adjusting block is arranged in the control rod in a clamped mode; clamping and separation of the clamping teeth and the linkage teeth are achieved by controlling the control rod to move in the control cylinder, so that switching of linkage rotation and single rotation of the three air door rotating shafts is switched, on the basis that synchronous rotation of the three air doors is achieved, the rotation angle of the single air door can be independently and finely adjusted, and the air door rotating speed is increased. And meanwhile, the control rod is limited and fixed in time through the direction adjusting block after adjustment is completed, and the situation that the opening degree adjusting effect of the air door is affected due to displacement of the air door after the rotating shaft is adjusted is prevented.

Description

Technical Field

[0001] This invention relates to the field of hot air control valve technology for coal mills, and in particular to a hot air control valve opening control device. Background Technology

[0002] The hot air regulating damper at the coal mill inlet frequently adjusts its opening to regulate airflow during coal mill operation. The damper has three air dampers, each fixed to a shaft. Rotating the shaft controls the damper's opening. These three shafts must extend from inside the damper to the outside and work together to control the opening. However, gaps inevitably exist between these shafts and the damper body. If these gaps are not properly addressed, air mixed with ash will leak through them, resulting in airflow loss and environmental pollution.

[0003] Currently, a rubber sealing ring is fixed to the shaft, and a labyrinth ring is placed on top of the rubber sealing ring. This method has a good sealing effect, but with frequent operation of the damper, deep marks will be worn into the shaft by the seal, and gaps will appear between the seal and the shaft. The sealing effect will gradually deteriorate, and the damper shaft will also become thinner in some areas after long-term operation. At the same time, the rubber seal is in contact with the gap between the damper's outer wall and the rotating shaft for a long time. When the air volume increases, the force pushing the sealing ring outward increases, making it more prone to air leakage or wear. In addition, the rubber seal is always in contact with the gap of the rotating shaft. Every time the rotating shaft and air volume are adjusted, wear will occur due to relative rotation, which will reduce the service life and easily cause air leakage.

[0004] Meanwhile, the opening of the hot air damper determines the hot air throughput and direction. By adjusting the rotation angle of each damper individually, a certain angle can be formed between the three dampers, thereby obtaining a suitable hot air direction and volume. However, currently, the three dampers of the hot air damper in coal mills are controlled by a single lever to achieve synchronous control. In this case, it is impossible to fine-tune individual dampers. Also, if each damper is not locked in time after adjustment, it is easy to deviate under the blowing or vibration of hot air, thus affecting the hot air volume adjustment effect. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a hot air damper opening control device, comprising an air regulating mechanism, including a frame, a rotating shaft rotatably passing through the interior of the frame, an air damper disposed on the end face of the rotating shaft, and a bushing disposed on the outer wall of the rotating shaft; and a control mechanism, including a control cylinder disposed on the end face of the rotating shaft, a linkage gear disposed on the inner wall of the control cylinder, a control rod engaged with the inner wall of the linkage gear, and a directional block movably disposed on the end face of the control cylinder, wherein the directional block is engaged with the inside of the control rod.

[0008] As a preferred embodiment of the hot air damper opening control device of the present invention, the damper consists of three pieces and is sealed and fitted to the inner wall of the frame after being spliced ​​and engaged, the bushing is fixed to the outer wall of the frame, and there are three rotating shafts.

[0009] As a preferred embodiment of the hot air damper opening control device of the present invention, wherein: a control cylinder is fixedly provided on the end face of the rotating shaft, the control cylinder is a hollow cylindrical tube, and one end of the control rod slides through into the inside of the control cylinder and is provided with a tray.

[0010] As a preferred embodiment of the hot air damper opening control device of the present invention, wherein: the end face of the tray is provided with engaging teeth, the engaging teeth are engaged with the linkage teeth, and the inner wall of the control cylinder is also provided with a second elastic element, the other end of the second elastic element being movably fitted to the tray.

[0011] In a preferred embodiment of the hot air damper opening control device of the present invention, the outer wall of the control cylinder is provided with a through hole, and the outer wall of the end of the control rod that extends to the outside of the control cylinder is provided with a positioning tooth, which slides through the through hole.

[0012] As a preferred embodiment of the hot air damper opening control device of the present invention, the control cylinder end face is provided with a positioning frame, the directional block is slidably disposed inside the positioning frame, and the positioning frame is a hollow cylinder and is fixedly disposed on the control cylinder end face.

[0013] As a preferred embodiment of the hot air damper opening control device of the present invention, the end face of the adjusting block is provided with a positioning block, the two ends of the positioning block are respectively provided with a right-angled side and a hypotenuse, the positioning block is movably engaged with the positioning tooth and the right-angled side is in contact with the inner wall of the positioning tooth.

[0014] As a preferred embodiment of the hot air regulating door opening control device of the present invention, a third elastic element is provided between the adjusting block and the positioning frame, and a positioning block is also provided on the outer wall of the adjusting block, the positioning block being cylindrical in shape.

[0015] As a preferred embodiment of the hot air damper opening control device of the present invention, the positioning frame end face is provided with an adjustment groove, the adjustment groove is also a cylindrical groove and the positioning block is engaged with the adjustment groove.

[0016] As a preferred embodiment of the hot air damper opening control device of the present invention, it further includes: a sealing mechanism, comprising a sealing ring disposed on the outer wall of the rotating shaft and a sealing groove disposed on the inner wall of the frame; and an anti-loosening mechanism, comprising a boss disposed on the outer wall of the rotating shaft, a locking block disposed on the outer wall of the boss, a limiting cylinder disposed on the inner wall of the frame, and a locking groove arranged in a circumferential array on the inner wall of the limiting cylinder.

[0017] The beneficial effects of this invention are as follows: This invention achieves the engagement and disengagement of the engaging teeth and linkage teeth by controlling the movement of the control rod inside the control cylinder, thereby switching between the linkage rotation and individual rotation of the three damper shafts. Based on achieving synchronous rotation of the three dampers, the rotation angle of a single damper can be finely adjusted individually, thereby obtaining more airflow adjustment combinations and airflow direction to adapt to different usage scenarios. At the same time, the adjustment block promptly limits and fixes the control rod after adjustment to prevent the damper from shifting after the adjustment shaft is completed, thus affecting the opening effect of the adjusted damper. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is a schematic diagram of the overall hot air damper opening control device in this invention.

[0020] Figure 2 This is an internal cross-sectional view of the anti-loosening mechanism in this invention.

[0021] Figure 3 This is a schematic diagram of the locking mechanism in this invention.

[0022] Figure 4 This is a schematic diagram of the sliding fit between the rotating shaft and the damper in this invention.

[0023] Figure 5 This is a schematic diagram of the sliding cooperation between the gantry rod and the guide rail in this invention.

[0024] Figure 6 This is a cross-sectional schematic diagram of the control mechanism in this invention.

[0025] Figure 7 This is a schematic diagram of the engaging teeth and linkage in this invention.

[0026] Figure 8 This is a schematic diagram of the orientation block structure in this invention. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0030] Example 1

[0031] Reference Figures 1-4 This is the first embodiment of the present invention. This embodiment provides a hot air damper opening control device, including an air adjustment mechanism 100 and a control mechanism K. The control mechanism K drives each damper 103 to rotate. At the same time, by adjusting the control mechanism K, the three dampers 103 can be adjusted individually to obtain hot air volume and air direction at different openings. Finally, the rotation angle of the dampers 103 is locked and prevented from loosening by the adjustment block K-4.

[0032] Specifically, it includes an air regulating mechanism 100, which includes a frame 101, a rotating shaft 102 rotatably passing through the inside of the frame 101, a damper 103 located on the end face of the rotating shaft 102, and a bushing 104 located on the outer wall of the rotating shaft 102; and a control mechanism K, which includes a control cylinder K-1 located on the end face of the rotating shaft 102, a linkage gear K-2 located on the inner wall of the control cylinder K-1, a control rod K-3 engaged with the inner wall of the linkage gear K-2, and a directional block K-4 movably located on the end face of the control cylinder K-1, wherein the directional block K-4 is engaged with the inside of the control rod K-3.

[0033] Among them, there are three dampers 103, and the dampers 103 are spliced ​​and locked together and sealed to the inner wall of the frame 101. The bushing 104 is fixed to the outer wall of the frame 101. There are three rotating shafts 102. The end face of the rotating shaft 102 is fixedly provided with a control cylinder K-1. The control cylinder K-1 is a hollow cylindrical tube. One end of the control rod K-3 slides through the control cylinder K-1 and is provided with a tray K-10.

[0034] Even better, the end face of the tray K-10 is provided with engaging teeth K-5, which engage with the linkage teeth K-2. The inner wall of the control cylinder K-1 is also provided with a second elastic element K-6, the other end of which is movably fitted with the tray K-10.

[0035] The second elastic element K-6 is a V-shaped spring with its open end in contact with the tray K-10. Its tip is fixed to the inner wall of the control cylinder K-1. When the tray K-10 descends, it presses down on the second elastic element K-6 and causes it to deform, so that the tray K-10 can automatically reset under the push of the second elastic element K-6 after descending to a certain position.

[0036] Preferably, both the linkage tooth K-2 and the engagement tooth K-5 are rectangular tooth blocks arranged in a circular array. Thus, the linkage tooth K-2 and the engagement tooth K-5 are assembled into a complete frustum shape and locked together, thereby achieving the locking between the control rod K-3 and the control cylinder K-1.

[0037] Furthermore, the outer wall of the control cylinder K-1 is provided with a through hole K-7, and the outer wall of the end of the control rod K-3 that extends to the outside of the control cylinder K-1 is provided with a positioning tooth K-8, which slides through the through hole K-7; the end face of the control cylinder K-1 is provided with a positioning frame K-9, and the adjusting block K-4 is slidably disposed inside the positioning frame K-9. The positioning frame K-9 is a hollow cylinder and is fixedly disposed on the end face of the control cylinder K-1.

[0038] Preferably, the end face of the adjusting block K-4 is provided with a positioning block K-11, and the two ends of the positioning block K-11 are respectively provided with a right-angled side K-12 and a hypotenuse K-13. The positioning block K-11 is movably engaged with the positioning tooth K-8 and the right-angled side K-12 is in contact with the inner wall of the positioning tooth K-8.

[0039] Among them, a third elastic element K-13 is provided between the adjusting block K-4 and the positioning frame K-9. The outer wall of the adjusting block K-4 is also provided with a positioning block K-14, which is cylindrical in shape. The end face of the positioning frame K-9 has an adjusting groove K-15, which is also cylindrical in shape. The positioning block K-14 is engaged with the adjusting groove K-15. There are two adjusting grooves K-15, which are perpendicular to each other.

[0040] Among them, the positioning tooth K-8 is also a rectangular tooth block, and the third elastic element K-13 is a spring. The spring is sleeved on the outer wall of the control rod K-3 and its two ends are respectively connected to the end face of the control rod K-3 and the inner wall of the positioning frame K-9.

[0041] Even better, the control lever K-3 has a rotating handle on its end face, so that the rotation angle of each of the three control levers can be adjusted individually to control the rotation angle of each individual damper 103, thereby obtaining hot air with different air volume and different air direction by coordinating the rotation angles of the three dampers 103.

[0042] In summary, during use, if the operator needs to adjust the rotation angle of a specific damper 103 individually, they only need to push the control lever K-3 corresponding to the damper 103. The control lever K-3 slides inside the control cylinder K-1, causing the engaging tooth K-5 on the tray K-10 to engage with the linkage tooth K-2. This rotation of the control lever K-3 drives the control cylinder K-18 to rotate, and the rotation of the shaft 102 drives the damper 103 to rotate by the corresponding angle, thereby adjusting it to a suitable opening position and obtaining the appropriate airflow and direction. At the same time, by controlling the positioning block K-14 on the directional block K-4 to directly engage with the directional groove K-15 or rotate it 180° to engage with the directional groove K-15, the position of the right-angle side K-12 is controlled to connect with the inner walls of both sides of the positioning tooth K-8, thereby achieving the function of limiting the rotation angle and preventing the damper 103 from shifting due to vibration or other reasons after adjustment.

[0043] Example 2

[0044] Reference Figures 2-6 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that it also includes a sealing mechanism 200 and an anti-loosening mechanism 300. The air volume passing through the frame 101 is controlled by adjusting the rotation position of the damper 103. At the same time, the shaft sleeve 104 and the sealing ring 201 and the sealing groove 202 form a seal on the rotating shaft 102 to achieve the effect of preventing air leakage.

[0045] Specifically, the hot air damper opening control device also includes a sealing mechanism 200, which includes a sealing ring 201 disposed on the outer wall of the rotating shaft 102 and a sealing groove 202 disposed on the inner wall of the frame 101; and an anti-loosening mechanism 300, which includes a boss 301 disposed on the outer wall of the rotating shaft 102, a locking block 302 disposed on the outer wall of the boss 301, a limiting cylinder 303 disposed on the inner wall of the frame 101, and a locking groove 304 arranged in a circumferential array on the inner wall of the limiting cylinder 303.

[0046] The frame 101 is a sealed circular frame and is installed at the hot air control door, so that all hot air passes through the frame 101 to adjust the hot air volume. The rotating shaft 102 is rotatably installed inside the frame 101 and connected to the damper 103. The outer wall of the damper 103 is arc-shaped and fits against the inner wall of the frame 101.

[0047] Furthermore, a rubber sealing ring is installed on the bushing 104, and a thin elastic seal and a labyrinth chamber are provided inside the bushing 104, thereby sealing the bushing 104 at the connection between the rotating shaft 102 and the frame 101, thereby sealing and preventing leakage of the part of the rotating shaft 102 extending to the outside of the frame 101.

[0048] Preferably, there are three dampers 103, and after the dampers 103 are spliced ​​and snapped together, they are sealed and fitted to the inner wall of the frame 101. The bushing 104 is fixed to the outer wall of the frame 101. There are three rotating shafts 102, and the outer wall of the rotating shaft 102 is provided with a connecting rod 102a for rotation.

[0049] More preferably, the sealing ring 201 is slidably disposed on the outer wall of the rotating shaft 102, the boss 301 is fixedly disposed on the outer wall of the rotating shaft 102, and a first elastic element 201a is provided between the sealing ring 201 and the boss 301, the first elastic element 201a being sleeved on the outer wall of the rotating shaft 102.

[0050] The first elastic element 201a is a spring. The damper 103 has two shapes: crescent and waist. The two crescent-shaped dampers 103 and the waist-shaped damper 103 are spliced ​​together to form a complete circle and can fit tightly against the inner wall of the frame 101. The air volume passing through the frame 101 can be adjusted by adjusting the rotation angle of the damper 103. The rotating shaft 102 controls the two crescent-shaped dampers 103 and the waist-shaped damper 103 respectively. The connecting rod 102a is hinged to each rotating shaft 102. The distance between the connecting rod 102a and each rotating shaft 102 is the same. Thus, controlling the movement of the connecting rod 102a can make each rotating shaft 102 rotate by the same angle, so that the three dampers 103 can be completely spliced ​​together and fill the interior of the frame 101.

[0051] Furthermore, the boss 301 is fixedly disposed on the outer wall of the rotating shaft 102, and the sealing ring 201 is slidably disposed on the outer wall of the rotating shaft 102. An elastic rubber sealing ring is provided at one end of the sealing ring 201 near the sealing groove 202. The sealing groove 202 is frustoconical. When pushed by the first elastic member 201a, the sealing ring 201 always moves towards the sealing groove 202 and fits against it, so that the elastic rubber sealing ring fills into the sealing groove 202 and seals the connection between the frame 101 and the inner wall of the rotating shaft 102.

[0052] In summary, during use, firstly, by moving the connecting rod 102a, the three rotating shafts 102 are driven to rotate simultaneously, thereby causing the three dampers 103 connected to the rotating shafts 102 to rotate independently. This results in an angular deviation between the dampers 103 and the inner wall of the frame 101, thus adjusting the hot air volume inside the frame 101. At this time, the sealing ring 201 and the sealing groove 202 are initially fitted together. The rotation of the rotating shaft 102 will not cause significant friction damage to the inner wall of the sealing ring 201, nor will it affect the rotation of the rotating shaft 102. After adjustment, the sealing ring 201... 01 Under the elastic force of the first elastic element 201a, it adheres to the sealing groove 202 and achieves initial sealing. When the hot air volume through the frame 101 increases, the gas pressure on the inner wall of the frame 101 increases. At this time, the hot air is most likely to leak along the rotating shaft 102. However, when the air pressure acts on the sealing ring 201, it will only push the sealing ring 201 to adhere more tightly to the sealing groove 202. Moreover, the larger the opening of the damper 103, the greater the air pressure inside the frame 101, and the tighter the fit between the sealing ring 201 and the sealing groove 202, thus achieving a better leak-proof effect.

[0053] Example 3

[0054] Reference Figures 1-6 This is the third embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that the sealing groove 202 is a frustum-shaped groove and the diameter of the sealing groove 202 gradually decreases from top to bottom until it seals and fits with the rotating shaft 102. In addition, the transmission block 102b can be slidably disposed inside the transmission groove 103a, so as to prevent the sealing ring 201 from rubbing against the rotating shaft 102 and causing wear when the rotating shaft 102 is rotated, thereby affecting the service life.

[0055] Specifically, the sealing groove 202 is a frustum-shaped groove and the diameter of the sealing groove 202 gradually decreases from top to bottom until it seals and fits with the rotating shaft 102. The sealing ring 201 is a hollow ring with a wedge-shaped outer wall and is engaged with the inner wall of the sealing groove 202.

[0056] Preferably, the rotating shaft 102 is slidably disposed at one end of the damper 103 and a transmission block 102b is provided. The damper 103 is provided with a transmission groove 103a. The transmission block 102b is slidably disposed inside the transmission groove 103a, so that the rotating shaft 102 can slide along the axis inside the damper 103 but cannot rotate relative to the damper 103.

[0057] The sealing groove 202 is located at the junction of the inner wall of the frame 101 and the rotating shaft 102. The sealing groove 202 is a 45° frustum-shaped groove, and the sealing ring 201 is slidably sleeved on the outer wall of the rotating shaft 102. The outer wall of the sealing ring 201 is wedge-shaped, so it fits tightly with the sealing groove 202. The center line of the sealing groove 202 coincides with the center line of the sealing ring 201.

[0058] More preferably, the transmission block 102b is a rectangular block, and the center of the transmission block 102b is fixed on the central axis of the transmission shaft 102. The transmission groove 103a is a rectangular sliding groove, and the axis of the rotating shaft 102 coincides with the center line of the transmission groove 103a. Thus, the rotating shaft 102 can slide inside the transmission groove 103a and simultaneously drive the damper 103 to rotate.

[0059] Furthermore, the limiting cylinder 303 is detachably disposed on the inner wall of the frame 101, and the inner wall of the limiting cylinder 303 is provided with a slot 303a, and the locking slot 304 is arranged in a circumferential array at the bottom of the slot 303a.

[0060] The limiting cylinder 303 is a hollow cylinder sleeved on the outside of the rotating shaft 102 and fixed to the inner wall of the frame 101 by bolts. The slot 303a is a wedge-shaped slot and the locking block 302 is a wedge-shaped block. The locking block 302 can be engaged in the slot 303a and locked, thereby limiting and preventing the rotating shaft 102 from loosening. Then, by rotating the bolt, the limiting cylinder 303 is controlled to descend to a suitable angle, thereby adjusting the contact distance between the sealing ring 201 and the sealing groove 202, thereby fine-tuning the sealing effect.

[0061] In summary, during use, first move the limiting cylinder 303 to the appropriate position using bolts, then push the rotating shaft 102 inward. At this time, the transmission block 102b slides along the transmission groove 103a, causing the rotating shaft 102 to slide inside the damper 103, thereby displacing the rotating shaft 102 and causing the sealing ring 201 to displace and disengage from the sealing groove 202. At this time, rotating the rotating shaft 102 will not cause wear between the sealing ring 201 and the sealing groove 202, thus extending its service life. The damper is rotated by the engagement between the transmission block 102b and the transmission groove 103a, thereby adjusting the air intake of the valve body 101. After adjustment, move the rotating shaft 102 in the opposite direction to make the sealing ring 201 and the sealing groove 202 fit tightly together and seal. Finally, the locking block 302 is engaged inside the slot 303a to prevent the rotating shaft 102 from loosening, achieving a stable seal and preventing air leakage at the connection between the rotating shaft 102 and the frame 101.

[0062] Example 4

[0063] Reference Figures 1-7 This is the fourth embodiment of the present invention. This embodiment is based on the previous embodiment, except that the outer wall of the rotating column 302a is respectively fixed with an opening plate 302a-1 and a closing plate 302a-2. The opening plate 302a-1 and the closing plate 302a-2 automatically switch between engaging and disengaging with the locking groove 304.

[0064] Specifically, the locking block 302 is a hollow, waist-shaped cylinder. The inner wall of the locking block 302 is provided with a rotating column 302a. The outer wall of the rotating column 302a is respectively fixed with an opening plate 302a-1 and a closing plate 302a-2. The angle between the opening plate 302a-1 and the closing plate 302a-2 is an obtuse angle.

[0065] The outer wall of the locking block 302 is provided with a sliding groove 302b, the inner wall of the sliding groove 302b is provided with a slider 302c, the end face of the slider 302c is fixed with a cylinder 302c-1, the outer wall of the cylinder 302c-1 is provided with a guide wheel 302c-2, and the guide wheel 302c-2 is rolled on the end face of the opening plate 302a-1 and the closing plate 302a-2.

[0066] Furthermore, the outer wall of the slider 302c is provided with a gantry rod 302d, the end face of the limiting cylinder 303 is provided with a guide rail 303b, and the gantry rod 302d is slidably disposed on the inner wall of the guide rail 303b; the end face of the closing plate 302a-2 is provided with a limiting block 302a-3, the limiting block 302a-3 is engaged in the locking groove 304, and the closing plate 302a-2 is fitted into the inner wall of the groove 303a.

[0067] More preferably, the cylinder 302c-1 connecting the opening plate 302a-1 and the closing plate 302a-2 is rotatably mounted on the inner wall of the locking block 302 via a bearing. The slide groove 302b is an oblong groove that runs through the inner walls of both sides of the locking block 302. The slider 302c is a square slider that slides freely in the slide groove 302b, while simultaneously driving the guide wheel 302c-2 to slide from the opening plate 302a-1 to the closing plate 302a-2.

[0068] The included angle between the opening plate 302a-1 and the closing plate 302a-2 is 135°, the slot 303a is a 45° wedge-shaped slot, the included angle between the limiting block 302a-3 and the closing plate 302a-2 is 45°, and the limiting block 302a-3 and the opening plate 302a-1 are at a 90° right angle. When the guide wheel 302c-2 moves onto the opening plate 302a-1, it drives the closing plate 302a-2 to move and engage with the slot 303a through a lever with the cylinder 302c-1 as the fulcrum. At the same time, the limiting block 302a-3 engages into the locking groove 304.

[0069] Preferably, the gantry rod 302d is disposed on the outer wall of the two side sliders 302c. The outer wall of the gantry rod 302d is slidably disposed inside the guide rail 303b and can rotate freely around the axis of the rotating shaft 102. At the same time, when the rotating shaft 102 moves up and down, the gantry rod 302d is disposed inside the guide rail 303b, which causes the guide wheel 302c-2 to undergo relative displacement with the locking block 302. Thus, the guide wheel 302c-2 slides between the opening plate 302a-1 and the closing plate 302a-2. The locking block 302 is arranged parallel to the axis of the rotating shaft 102 and is close to the locking groove 304 in the direction of the closing plate 302a-2. Twelve locking blocks 302 are arranged in a circumferential array around the rotating shaft 102, and twelve locking grooves 304 are arranged in a circumferential array around the inner wall of the slot 303a.

[0070] In summary, when the damper 103 needs to be adjusted, the rotating shaft 102 is pushed inward, causing the locking block 302 to move with the rotating shaft 102 and generate relative displacement with the gantry rod 302d. As a result, the guide wheel 302c-2 rolls along the opening plate 302a-1 to the closing plate 302a-2 and squeezes the closing plate 302a-2, causing it to rotate around the cylinder 302a. At this time, the closing plate 302a-2 and the slot 303a make interlocking contact, and the limiting block 302a-3 disengages from the locking groove 304, thereby causing the locking ring 201 to disengage from the sealing groove 202. Thus, the rotating shaft 102 can be rotated normally to adjust the position of the damper 103 to control the airflow. After the adjustment is completed, the rotating shaft 102 is moved in the opposite direction, causing the guide wheel 302c-2 to move to the opening plate 302a-1, and the rotating shaft 102 is fixed to the limiting cylinder 303 to achieve automatic fixation. This simplifies the operation process while ensuring the damper is leak-proof.

[0071] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0072] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0073] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A hot air damper opening control device, characterized in that: include, The air regulating mechanism (100) includes a frame (101), a rotating shaft (102) rotatably passing through the interior of the frame (101), a damper (103) disposed on the end face of the rotating shaft (102), and a bushing (104) disposed on the outer wall of the rotating shaft (102); and, The control mechanism (K) includes a control cylinder (K-1) disposed on the end face of the rotating shaft (102), a linkage tooth (K-2) disposed on the inner wall of the control cylinder (K-1), a control rod (K-3) engaged with the inner wall of the linkage tooth (K-2), and a steering block (K-4) movably disposed on the end face of the control cylinder (K-1), wherein the steering block (K-4) is engaged inside the control rod (K-3).

2. The hot air damper opening control device as described in claim 1, characterized in that: The damper (103) consists of three pieces, and after being spliced ​​and snapped together, the damper (103) is sealed and fitted to the inner wall of the frame (101). The bushing (104) is fixedly installed on the outer wall of the frame (101). There are three rotating shafts (102).

3. The hot air damper opening control device as described in claim 2, characterized in that: The end face of the rotating shaft (102) is fixedly provided with a control cylinder (K-1), which is a hollow cylindrical tube. One end of the control rod (K-3) slides through the control cylinder (K-1) and is provided with a tray (K-10).

4. The hot air damper opening control device as described in claim 3, characterized in that: The end face of the tray (K-10) is provided with engaging teeth (K-5), which engage with the linkage teeth (K-2). The inner wall of the control cylinder (K-1) is also provided with a second elastic element (K-6), and the other end of the second elastic element (K-6) is movably attached to the tray (K-10).

5. The hot air damper opening control device as described in claim 4, characterized in that: The outer wall of the control cylinder (K-1) is provided with a through hole (K-7), and the outer wall of the end of the control rod (K-3) that extends through to the outside of the control cylinder (K-1) is provided with a positioning tooth (K-8), which slides through the through hole (K-7).

6. The hot air damper opening control device as described in claim 5, characterized in that: The control cylinder (K-1) is provided with a positioning frame (K-9) on its end face. The steering block (K-4) is slidably disposed inside the positioning frame (K-9). The positioning frame (K-9) is a hollow cylinder and is fixedly disposed on the end face of the control cylinder (K-1).

7. The hot air damper opening control device as described in claim 6, characterized in that: The end face of the steering block (K-4) is provided with a positioning block (K-11). The two ends of the positioning block (K-11) are respectively provided with a right-angled side (K-12) and a hypotenuse (K-13). The positioning block (K-11) is movably engaged with the positioning tooth (K-8) and the right-angled side (K-12) is in contact with the inner wall of the positioning tooth (K-8).

8. The hot air damper opening control device as described in claim 7, characterized in that: A third elastic element (K-13) is provided between the adjusting block (K-4) and the positioning frame (K-9). The outer wall of the adjusting block (K-4) is also provided with a positioning block (K-14), which is cylindrical in shape.

9. The hot air damper opening control device as described in claim 8, characterized in that: The positioning frame (K-9) has an adjustment groove (K-15) on its end face. The adjustment groove (K-15) is also a cylindrical groove, and the positioning block (K-14) is engaged with the adjustment groove (K-15).

10. The hot air damper opening control device as described in claim 9, characterized in that: It also includes a sealing mechanism (200), which includes a sealing ring (201) disposed on the outer wall of the rotating shaft (102) and a sealing groove (202) disposed on the inner wall of the frame (101); and an anti-loosening mechanism (300), which includes a boss (301) disposed on the outer wall of the rotating shaft (102), a locking block (302) disposed on the outer wall of the boss (301), a limiting cylinder (303) disposed on the inner wall of the frame (101) and a locking groove (304) arranged in a circumferential array on the inner wall of the limiting cylinder (303).

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