Split type adjusting air door with connecting rod mechanism

Abstract

The utility model provides a split type adjusting air door with a connecting rod mechanism, and belongs to the technical field of ventilation equipment. The split type adjusting air door with the connecting rod mechanism comprises an air door shell, a connecting rod mechanism and an air door cover, a plurality of rotating shafts; a damper blade; the rotating rods are special-shaped rods, the rotating rods correspond to the rotating shafts one to one and are fixedly connected with the rotating shafts, the planes where the rotating rods are located are perpendicular to the corresponding rotating shafts, the rotating rods drive the rotating shafts to rotate, the heads and the tails of every two adjacent rotating rods are rotationally connected through connecting rods and are located on the same plane, and the rotating angles of every two adjacent rotating rods are the same in size and opposite in direction. According to the split type adjusting air door with the connecting rod mechanism, the split type design of the air door is achieved, meanwhile, the split type adjusting air door has the advantages of being simple and compact in structure, the whole connecting rod mechanism is located on the same plane due to the arrangement of the rotating rod and the connecting rod, the production technology is simple, and the control precision is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation equipment, and particularly relates to an opposed regulating air door with a connecting rod mechanism. Background Art

[0002] An air door is a relatively common ventilation equipment applied in the field of ventilators. Its main functions are divided into two types: one is to play a conducting and cut-off role in the ventilation system, that is, a switch-type air door; the other is to play a role in controlling the ventilation volume in the system, that is, a regulating-type air door.

[0003] In the field of burner technology, especially in the current ultra-low nitrogen burner technology field, the role of the air door in the combustion auxiliary air regulation system is crucial, which is not only related to the smooth operation of the burner, but also related to the sensitivity and accuracy of the combustion load regulation.

[0004] In terms of smoothness, many burner manufacturers adopt an opposed air door. The opposed air door refers to an air door in the form of multiple blades, and the rotation directions of adjacent air door plates are opposite when opening and closing. This kind of air door supplies air evenly and smoothly, avoiding the situation that the flame is affected by the auxiliary combustion air and causes the flame to burn unevenly due to the one-sided air guiding of the forward-opening air door.

[0005] Traditional air doors for burners can achieve uniform opposed opening of the air door blades and smooth air flow; but usually they are driven by gears, with high processing costs; or, there are also forward-opening blades or non-uniform opposed blades driven by connecting rods (affected by the connecting rod drive), in which case the air flow is non-uniform and the resistance is very large, directly affecting the air volume and uniformity. Summary of the Utility Model

[0006] The present utility model is made to solve the above problems, and aims to provide an opposed regulating air door with a connecting rod mechanism.

[0007] The present utility model provides an opposed regulating air door with a connecting rod mechanism, having the following features: an air door housing with a through air duct, the air door housing is installed in the air outlet area of the air outlet device and the air duct is aligned with the air outlet area; a plurality of rotating shafts rotatably passing through the side wall of the air door housing vertically and at least partially extending into the interior of the air door housing, the plurality of rotating shafts are evenly arranged and parallel to each other; a plurality of air door blades, the number of which is a plurality and located inside the air door housing, the air door blades are connected to the parts of the rotating shafts extending into the interior of the air door housing one by one and are driven by them to rotate around the rotating shafts together, and in the initial state, the plurality of air door blades are in the same plane and close the air duct in the air door housing; and a plurality of rotating rods, the rotating rods are special-shaped rods, the rotating rods are fixedly connected to the rotating shafts one by one, the plane where the rotating rods are located is perpendicular to the corresponding rotating shafts, the rotating rods drive the rotating shafts to rotate, the heads and tails of two adjacent rotating rods are rotatably connected by a connecting rod and are in the same plane, and the rotation angles of two adjacent rotating rods are the same in magnitude and opposite in direction.

[0008] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: A number of rotating shafts pass through two parallel side walls of the air damper housing, and the number of rotating shafts passing through the two side walls corresponds one by one. A number of rotating rods are correspondingly arranged on the rotating shafts of a single side wall. A damper blade is fixed between two corresponding rotating shafts on the two side walls, and the central axis of the damper blade coincides with the central axis of the rotating shaft.

[0009] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: The rotating rod includes one starting-end rotating rod, at least one intermediate rotating rod, and one ending-end rotating rod. The starting-end rotating rod and the intermediate rotating rod are rod-shaped structures with a bent angle, and the ending-end rotating rod is a rod-shaped structure. The starting-end rotating rod, the intermediate rotating rod, and the ending-end rotating rod are sequentially fixed on the corresponding rotating shafts. The starting-end rotating rod and the intermediate rotating rod are fixed on the corresponding rotating shafts through their respective bent parts, and the tail end of the ending-end rotating rod is fixed on the corresponding rotating shaft. The heads and tails of two adjacent starting-end rotating rods, intermediate rotating rods, and ending-end rotating rods are respectively indirectly rotatably connected in sequence through rotatable linkages.

[0010] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: On the side wall surface where the starting-end rotating rod is arranged, the air damper housing also laterally extends an extended wall surface. The split-type adjustable air damper further includes: a driving shaft rotatably and vertically passing through the extended wall surface, the driving shaft being parallel to and in the same plane as the number of rotating shafts; and a driving rod, which is a rod-shaped structure, one end of which is fixedly connected to the driving shaft, and the other end of which is rotatably connected to the head of the starting-end rotating rod through a linkage, and the driving rod and the rotating rod are in the same plane.

[0011] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: The split-type adjustable air damper further includes a servo motor, and the servo motor is connected to the rotating shaft or the driving shaft to drive the rotating shaft or the driving shaft to rotate.

[0012] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: The rotation angles and magnitudes of the driving rod and the starting-end rotating rod are the same.

[0013] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: Denote the length of the driving rod as x. When the air damper blades are fully closed, the driving rod faces the rear of the air damper housing and forms a 45° angle with the bottom of the air damper housing. The starting-end rotating rod includes a first swing arm and a second swing arm, both the first swing arm and the second swing arm have a length of x, they are connected to each other and form a 135° angle, and the connection part between them is fixedly connected to the corresponding rotating shaft. The first swing arm is parallel to the driving rod, and the ends of the two are indirectly connected through a rotatable connecting rod. The middle rotating rod includes a third swing arm and a fourth swing arm, both the third swing arm and the fourth swing arm have a length of x, they are connected to each other and form a 90° angle, and the connection part between them is fixedly connected to the corresponding rotating shaft. The length of the ending-end rotating rod is x. In the initial state, the ending-end rotating rod is vertically oriented towards the rear of the air damper housing. In the initial state, the connecting rods connecting the heads and tails of the starting-end rotating rod, the middle rotating rod, and the ending-end rotating rod form a 135° or 45° angle with the bottom of the air damper housing, and the length of the connecting rod is

[0014] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: The connecting rod includes: a threaded rod; and two nuts, which are rotatably connected to both ends of the threaded rod adjustably. One end of the nut has an inwardly recessed internal threaded hole that is rotatably connected to the threaded rod, and the other end is rotatably connected to the head or tail end of the rotating rod or the driving rod.

[0015] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: The shaft ends of the rotating shaft and the driving shaft are polygonal. The end of the driving rod, the connection part between the first swing arm and the second swing arm, the connection part between the third swing arm and the fourth swing arm, and the end of the ending-end rotating rod all have a shaft sleeve with a polygonal through-hole that matches the shaft end of the corresponding rotating shaft or driving shaft. A slot is provided on the vertical plane of the shaft sleeve. The driving rod, the starting-end rotating rod, the middle rotating rod, and the ending-end rotating rod are matched with the shaft ends of the corresponding rotating shafts or driving shafts through their respective shaft sleeves, and bolts passing through the slots fasten the shaft sleeves to the corresponding shaft ends.

[0016] In the split-type adjustable air damper with a linkage mechanism provided by the present utility model, the following features may also be included: The split-type adjustable air damper further includes a mounting plate, which is arranged at the air duct of the air damper housing and is integrally formed with the air damper housing. It is a rectangular hollow ring plate. A number of mounting holes are provided on the mounting plate for fixing the split-type adjustable air damper to the set air outlet device through bolts.

[0017] Functions and effects of the utility model

[0018] The split-type adjustable air damper with a linkage mechanism according to the present utility model includes: an air damper housing having a through air duct, the air damper housing being installed in the air outlet area of the air outlet device and the air duct being aligned with the air outlet area; several rotating shafts rotatably passing vertically through the side wall of the air damper housing and at least partially extending into the interior of the air damper housing, the several rotating shafts being evenly arranged and parallel to each other; air damper blades, the number of which is several and located inside the air damper housing, the air damper blades being connected to the parts of the rotating shafts extending into the interior of the air damper housing one by one and being driven by them to rotate together around the rotating shafts, and the several air damper blades in the initial state being in the same plane and closing the air duct in the air damper housing; and several rotating rods, the rotating rods being special-shaped rods, the rotating rods being in one-to-one correspondence with the rotating shafts and fixedly connected, the plane where the rotating rods are located being perpendicular to the corresponding rotating shafts, the rotating rods driving the rotating shafts to rotate, and the heads and tails of two adjacent rotating rods being rotatably connected by a connecting rod and being in the same plane, and the rotation angles of two adjacent rotating rods being the same in magnitude and opposite in direction.

[0019] Therefore, the split-type adjustable air damper with a linkage mechanism of the present utility model has the advantages of simple and compact structure while realizing the split-type design of the air damper, and the arrangement of the rotating rods and the connecting rods makes the entire linkage mechanism in the same plane, with simple manufacturing process and high control precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the split-type adjustable air damper with a linkage mechanism of an embodiment of the present utility model when the air damper is completely closed;

[0021] Figure 2 is Figure 1 the corresponding side view;

[0022] Figure 3 is a schematic structural view of the split-type adjustable air damper with a linkage mechanism of an embodiment of the present utility model when the air damper is opened by 45°;

[0023] Figure 4 is Figure 3 the corresponding side view;

[0024] Figure 5 is a schematic structural view of the split-type adjustable air damper with a linkage mechanism of an embodiment of the present utility model when the air damper is completely opened;

[0025] Figure 6 is Figure 5 the corresponding side view. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the following embodiments will specifically describe a split-type adjustable air damper with a linkage mechanism of the present utility model in conjunction with the drawings.

[0027] <Embodiment>

[0028] Figure 1 FIG. 5 is a schematic structural view of the split-type adjustable air damper with a linkage mechanism in the embodiment of the present utility model when the air damper is fully closed; Figure 2 is Figure 1 the corresponding side view.

[0029] As Figure 1 and 2 shown, this embodiment provides a split-type adjustable air damper 100 with a linkage mechanism, including an air damper housing 10, a mounting plate 20, a driving shaft 30, a rotating shaft 40, air damper blades 50, a driving rod 60, a rotating rod 70, a connecting rod 80, and a servo motor 90.

[0030] The air damper housing 10 is a rectangular frame structure with a through air duct 10a inside.

[0031] In this embodiment, one side wall of the air damper housing 10 has an extended wall surface 10b in the vertically downward direction.

[0032] The mounting plate 20 is a rectangular hollow ring plate matching the air damper housing 10 and is integrally formed with the air damper housing 10. The mounting plate 20 has a plurality of mounting holes 20a for fixing the split-type adjustable air damper 100 to a set air outlet device through bolts, and after fixing, the air duct 10a of the split-type adjustable air damper 100 is aligned with the air outlet area of the air outlet device.

[0033] The driving shaft 30 is rotatably vertically penetrated through the extended wall surface 10b, and the end of the driving shaft 30 facing the external area of the air damper housing 10 is square.

[0034] In this embodiment, the number of the rotating shafts 40 is 8, which are rotatably vertically penetrated through the side wall of the air damper housing 10 and at least partially extend into the air duct 10a. The ends of the rotating shafts 40 facing the external area of the air damper housing 10 are square. Among them, 4 rotating shafts 40 are evenly distributed on each of the 2 opposite side walls of the air damper housing 10, and a plurality of rotating shafts 40 are parallel to each other and in the same plane as the driving shaft 30, and the rotating shafts 40 on the 2 opposite side walls correspond to each other. The distance between two adjacent rotating shafts 40 on the same side wall of the air damper housing 10 is x, and the distance between the rotating shafts 40 at both ends from the upper and lower side walls of the air damper housing 10 is x / 2.

[0035] In this embodiment, the number of the air damper blades 50 is 4, and its length matches the width of the air duct 10a, and the width of the air damper blades 50 is x. The midpoints at both ends in the length direction of the air damper blades 50 are respectively fixed to 2 opposite rotating shafts 40. When the split-type adjustable air damper 100 is fully closed, the 4 air damper blades 50 are in the same plane and enclose the air duct 10a in the air damper housing 10.

[0036] The length of the driving rod 60 is x. One end of the driving rod 60 has a bushing m with a square through hole matching the square end of the driving shaft 30. A slot n is provided on the vertical plane of the bushing m. The driving rod 60 is sleeved on the end of the driving shaft 30 through the bushing m at one end, and is tightened and fixed to the end of the driving shaft 30 by a bolt passing through the slot n. A cylindrical protrusion p protrudes laterally and vertically at the other end of the driving rod 60. In the initial state (when the split-type regulating damper 100 is fully closed), the driving rod 60 forms an angle of 45° with the x-axis.

[0037] The rotating rod 70 includes one starting-end rotating rod 71, two intermediate rotating rods 72, and one end rotating rod 73.

[0038] The starting-end rotating rod 71 includes a first swing arm 711 and a second swing arm 712.

[0039] The lengths of both the first swing arm 711 and the second swing arm 712 are x. They are integrally formed and form an angle of 135°. The connection part of the first swing arm 711 and the second swing arm 712 has a bushing m and a slot n. Cylindrical protrusions p protrude at the ends of the first swing arm 711 and the second swing arm 712 (the settings are generally similar to the bushing m, slot n, and cylindrical protrusion p on the driving rod 60, and will not be repeated). The starting-end rotating rod 71 is sleeved on the end of the rotating shaft 40 through its bushing m, and is tightened and fixed to the end of the rotating shaft 40 by a bolt passing through the slot n. In the initial state (when the split-type regulating damper 100 is fully closed), the first swing arm 711 forms an angle of 45° with the x-axis, and the second swing arm 712 faces the positive direction of the z-axis.

[0040] The intermediate rotating rod 72 includes a third swing arm 721 and a fourth swing arm 722. The lengths of both the third swing arm 721 and the fourth swing arm 722 are x. They are integrally formed and form an angle of 90°. The connection part of the third swing arm 721 and the fourth swing arm 722 has a bushing m and a slot n. Cylindrical protrusions p protrude at the ends of the third swing arm 721 and the fourth swing arm 722 (the settings are generally similar to the bushing m, slot n, and cylindrical protrusion p on the driving rod 60, and will not be repeated). The intermediate rotating rod 72 is sleeved on the end of the rotating shaft 40 through its bushing m, and is tightened and fixed to the end of the rotating shaft 40 by a bolt passing through the slot n.

[0041] As shown in the figure, the number of the intermediate rotating rods 72 is 2, and these two are respectively denoted as the first intermediate rotating rod 72A and the second intermediate rotating rod 72B. In the initial state (when the split-type regulating damper 100 is fully closed): the third swing arm 721 of the first intermediate rotating rod 72A faces the negative direction of the x-axis, and the fourth swing arm 722 faces the positive direction of the z-axis; the third swing arm 721 of the second intermediate rotating rod 72B faces the positive direction of the x-axis, and the fourth swing arm 722 faces the positive direction of the z-axis.

[0042] The length of the end rotating rod 73 is x. One end of it has a bushing m with a square through hole that matches the square end of the rotating shaft 40. A slot n is provided on the vertical plane of the bushing m. The end rotating rod 73 is sleeved on the end of the rotating shaft 40 through the bushing m at one end, and is tightened and fixed to the end of the rotating shaft 40 by a bolt passing through the slot n. The other end of the end rotating rod 73 protrudes laterally and vertically with a cylindrical protrusion p. In the initial state (when the split-type regulating air damper 100 is fully closed), the end rotating rod 73 faces the negative direction of the x-axis.

[0043] The connecting rod 80 includes a threaded rod 81 and two nuts 82.

[0044] One end of the nut 82 has an indented internal threaded hole (not shown in the figure) that can be rotationally connected to the threaded rod 81. By adjusting the depth of the threaded rod 81 screwed into the internal threaded holes of the two nuts 82 at both ends, the overall length of the connecting rod 80 can be adjusted; the other end of the nut 82 has a ring 82a that can be rotationally sleeved to match the cylindrical protrusion p.

[0045] As shown in the figure, in this embodiment, the driving rod 60, the starting end rotating rod 71, the first intermediate rotating rod 72A, the second intermediate rotating rod 72B, and the end rotating rod 73 are all in the xoz plane.

[0046] In this embodiment, the number of connecting rods 80 is 4. The four connecting rods 80 are rotationally sleeved and fixed to the respective cylindrical protrusions p of the driving rod 60, the starting end rotating rod 71, the first intermediate rotating rod 72A, the second intermediate rotating rod 72B, and the end rotating rod 73 through the rings 82a at both ends, so as to rotatably connect the driving rod 60, the starting end rotating rod 71, the first intermediate rotating rod 72A, the second intermediate rotating rod 72B, and the end rotating rod 73 indirectly in sequence.

[0047] Among them, the lengths of the three connecting rods 80 between the starting end rotating rod 71, the first intermediate rotating rod 72A, the second intermediate rotating rod 72B, and the end rotating rod 73 are As shown in the figure, these three connecting rods 80 are respectively at -45°, 45°, and 135° with respect to the x-axis.

[0048] The servo motor 90 is fixed on the extended wall surface 10b and is connected to the driving shaft 30, so as to drive the driving shaft 30 to rotate.

[0049] In a variant of this embodiment, the servo motor 90 is connected to any one of the eight rotating shafts 40 and drives it to rotate, and drives the four air dampers to perform split-type adjustment through the indirect rotational connection between different rotating shafts 40.

[0050] Figure 3 It is a schematic structural diagram of the split-type regulating air damper with a connecting rod mechanism in the embodiment of the present utility model when the air damper is opened 45°;Figure 4 is Figure 3 the corresponding side view; Figure 5 is a schematic structural view of the split-type adjustable air damper with a link mechanism in the embodiment of the present utility model when the air damper is fully opened; Figure 6 is Figure 5 the corresponding side view.

[0051] As Figures 1 to 6 shown, the usage process of the split-type adjustable air damper 100 with a link mechanism in this embodiment is as follows:

[0052] First, in the initial state, the split-type adjustable air damper 100 is in a fully closed state, and the 4 air damper blades 50 are in the same plane, closing the air duct 10a.

[0053] Subsequently, the servo motor 90 is started. At this time, the servo motor 90 runs, driving the driving shaft 30 to slowly rotate counterclockwise (in the xoz plane in the right view as shown in Figure 2 and 4 Figure 6), and the driving shaft 30 drives the driving rod 60 to rotate counterclockwise.

[0054] Then, the driving rod 60 drives the starting end rotating rod 71, the first intermediate rotating rod 72A, the second intermediate rotating rod 72B, and the end rotating rod 73 to rotate counterclockwise, clockwise, counterclockwise, and clockwise directions respectively through the link 80. The rotation of the above-mentioned several rotating rods drives the rotating shafts 40 sleeved and fixed thereon to rotate in the corresponding clockwise direction, that is, drives the rotation of the air damper blades 50 connected to the rotating shafts 40. Since the rotation directions between adjacent pairs of the several rotating rods are opposite, the rotation of the air damper blades 50 can also achieve opposite rotation directions between adjacent pairs, that is, the split design of the air damper blades 50 is realized.

[0055] Functions and effects of the embodiment

[0056] According to an opposed-type adjustable air damper with a linkage mechanism provided by this embodiment, it includes: an air damper housing with a through air duct, the air damper housing is installed in the air outlet area of the air outlet device and the air duct is aligned with the air outlet area; several rotating shafts rotatably passing through the side wall of the air damper housing vertically and at least partially extending into the interior of the air damper housing, the several rotating shafts are evenly arranged and parallel to each other; air damper blades, the number of which is several and located inside the air damper housing, the air damper blades are connected to the parts of the rotating shafts extending into the interior of the air damper housing one by one and are driven by them to rotate around the rotating shafts together, and several air damper blades in the initial state are in the same plane and close the air duct in the air damper housing; and several rotating rods, the rotating rods are special-shaped rods, the rotating rods are in one-to-one correspondence with the rotating shafts and are fixedly connected, the plane where the rotating rods are located is perpendicular to the corresponding rotating shafts, the rotating rods drive the rotating shafts to rotate, and the heads and tails of two adjacent rotating rods are rotatably connected by a connecting rod and are in the same plane, and the rotation angles of two adjacent rotating rods are the same in magnitude but opposite in direction.

[0057] Therefore, the opposed-type adjustable air damper with a linkage mechanism of this embodiment has the advantages of simple and compact structure while realizing the opposed-type design of the air damper, and the arrangement of the rotating rods and the connecting rods makes the entire linkage mechanism in the same plane, simplifying the manufacturing process and also having high control accuracy.

[0058] Furthermore, several rotating shafts pass through two parallel side walls of the air damper housing, and the several rotating shafts passing through the two side walls are in one-to-one correspondence. Several rotating rods are correspondingly arranged on the several rotating shafts of a single side wall. A connecting rod is fixed between two corresponding rotating shafts on the two side walls, and the central axis of the air damper blade coincides with the central axis of the rotating shaft. With such a setting, the air damper blades can be opposed and can close the air duct in the initial state. And the two ends of the blade in the length direction are connected to the rotating shafts, which can avoid excessive air resistance caused by connecting the blades with a whole long rotating shaft.

[0059] Furthermore, the rotating rod includes 1 starting-end rotating rod, at least 1 intermediate rotating rod and 1 ending-end rotating rod. The starting-end rotating rod and the intermediate rotating rod are rod-shaped structures with a bending angle, the ending-end rotating rod is a rod-shaped structure. The starting-end rotating rod, the intermediate rotating rod and the ending-end rotating rod are fixedly arranged on the corresponding rotating shafts in sequence. The starting-end rotating rod and the intermediate rotating rod are fixed on the corresponding rotating shafts through their bent parts, and the tail end of the ending-end rotating rod is fixed on the corresponding rotating shaft. The heads and tails of two adjacent starting-end rotating rods, intermediate rotating rods and ending-end rotating rods are respectively rotatably connected indirectly in sequence through rotatable connecting rods. With such a setting, the arrangement of different numbers of blades can be realized, and the number of air damper blades is not limited.

[0060] Further, on the side wall surface of the damper housing where the starting end rotating rod is provided, an extending wall surface laterally extends. The opposed-type adjustable damper further includes: a driving shaft, which is vertically and rotatably penetrated through the extending wall surface, and the driving shaft is parallel to and located in the same plane as a plurality of rotating shafts; and a driving rod, which is in a rod-shaped structure, one end of which is fixedly connected to the driving shaft, and the other end of which is rotatably connected to the starting end of the starting end rotating rod through a connecting rod, and the driving rod and the rotating rod are coplanar. With such a setting, the opening and closing of the damper blades can be controlled by an external driving shaft without directly adjusting the rotating shafts, thus facilitating subsequent maintenance.

[0061] Further, the opposed-type adjustable damper further includes a servo motor, and the servo motor is connected to the rotating shaft or the driving shaft, so as to drive the rotating shaft or the driving shaft to rotate. With such a setting, the control of the entire opposed-type adjustable damper is made more convenient and automated without manual adjustment.

[0062] Further, the angles and magnitudes of the rotation of the driving rod and the starting end rotating rod are the same. With such a setting, the adjustment of the damper blade angle is made more intuitive and clear without conversion according to a ratio.

[0063] Further, let the length of the driving rod be x. When the damper blades are completely closed, the driving rod faces the rear of the damper housing and forms a 45° angle with the bottom of the damper housing. The starting end rotating rod includes a first swing arm and a second swing arm, and the lengths of both the first swing arm and the second swing arm are x. The two are connected to each other and form a 135° angle, and the connection part between the two is fixedly connected to the corresponding rotating shaft. The first swing arm and the driving rod are parallel to each other and the ends thereof are indirectly connected through a rotatable connecting rod. The intermediate rotating rod includes a third swing arm and a fourth swing arm, and the lengths of both the third swing arm and the fourth swing arm are x. The two are connected to each other and form a 90° angle, and the connection part between the two is fixedly connected to the corresponding rotating shaft. The length of the end rotating rod is x. In the initial state, the end rotating rod is vertically oriented towards the rear of the damper housing. In the initial state, the connecting rods connecting the heads and tails of the starting end rotating rod, the intermediate rotating rod and the end rotating rod form a 135° or 45° angle with the bottom of the damper housing, and the length of the connecting rod is With such a setting, the opening and closing included angle of the damper is 90°.

[0064] Further, the connecting rod includes: a threaded rod; and two nuts, which are adjustably screwed onto both ends of the threaded rod. One end of the nut has an inwards recessed internal threaded hole that is screwed onto the threaded rod in a matching manner, and the other end is rotatably connected to the head or tail end of the rotating rod or the driving rod. With such a setting, the length of the connecting rod is convenient to adjust and fix, and can be adapted to different scenarios and requirements. Moreover, the connecting rod with adjustable length can accurately adjust the actual opening and closing angle of the damper and the synchronism of the rotation of the blades during the damper debugging stage.

[0065] Further, the shaft ends of the rotating shaft and the driving shaft are polygonal. The end of the driving rod, the connection joints of the first swing arm and the second swing arm, the connection joints of the third swing arm and the fourth swing arm, and the end of the terminal rotating rod are all provided with bushings having polygonal through holes that match the shaft ends of their respective corresponding rotating shafts or driving shafts. A slotted opening is provided on the vertical plane of the bushing. The driving rod, the starting rotating rod, the intermediate rotating rod, and the terminal rotating rod are matched with the shaft ends of their respective corresponding rotating shafts or driving shafts through their respective bushings, and bolts passing through the slotted openings fasten the bushings to the corresponding shaft ends. With such a setting, there is no welding process in the manufacturing process, avoiding errors caused by welding deformation.

[0066] Further, the split-type adjusting air damper further includes a mounting plate. The mounting plate is arranged at the air duct of the damper housing and is integrally formed with the damper housing. It is a rectangular hollow ring plate. A number of mounting holes are provided on the mounting plate for fixing the split-type adjusting air damper to the set air outlet device through bolts. With such a setting, the split-type adjusting air damper can be conveniently installed in the air outlet area of the air outlet device.

[0067] Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A split-type damper with a connecting rod mechanism, characterized in that: include: A damper housing having a through air duct, wherein the damper housing is installed in the air outlet area of ​​the air outlet device and the air duct is aligned with the air outlet area; A plurality of rotating shafts are rotatably disposed vertically through the side wall of the damper housing and at least partially pass into the interior of the damper housing, wherein the plurality of rotating shafts are evenly arranged and parallel to each other; A plurality of damper blades are located inside the damper housing, the damper blades are connected one-to-one with the portion of the shaft that passes into the damper housing and are driven by the shaft to rotate around the shaft, and the damper blades are initially located in the same plane and close the air duct in the damper housing; and A plurality of rotating rods are special-shaped rods, each of which corresponds to the rotating shaft one by one and is fixedly connected, the plane where the rotating rods are located is perpendicular to the corresponding rotating shaft, the rotating rods drive the rotating shaft to rotate, the heads and tails of two adjacent rotating rods are rotationally connected by connecting rods and are in the same plane, and the rotation angles of two adjacent rotating rods are the same in size but in opposite directions.

2. The split-type damper with a connecting rod mechanism according to claim 1, characterized in that: in, The plurality of rotating shafts pass through two mutually parallel side walls of the damper housing, and the plurality of rotating shafts passing through the two side walls correspond to each other one by one. The plurality of rotating rods are correspondingly arranged on the plurality of rotating shafts of the side wall on a single side. One damper blade is fixed between the corresponding rotating shafts on the two side walls, and the central axis of the damper blade coincides with the central axis of the rotating shaft.

3. The split-type damper with a connecting rod mechanism according to claim 1, characterized in that: in, The rotating rod comprises an initial rotating rod, at least one intermediate rotating rod and an end rotating rod. The starting rotating rod and the middle rotating rod are rod-shaped structures with bending angles, and the terminal rotating rod is a rod-shaped structure. The starting rotating rod, the middle rotating rod and the terminal rotating rod are fixed on the corresponding rotating shafts in sequence. The starting rotating rod and the intermediate rotating rod are fixed to the corresponding rotating shaft through their respective bent parts, and the tail end of the terminal rotating rod is fixed to the corresponding rotating shaft. The beginning and end rotating rods, the middle rotating rods and the end rotating rods adjacent to each other are indirectly connected in rotation in sequence through rotatable connecting rods.

4. The split-type damper with a connecting rod mechanism according to claim 3, Features: Wherein, the damper housing further has an extended wall extending laterally from a side wall surface where the starting end rotating rod is arranged. The split-type regulating damper also includes: A driving shaft is rotatably disposed vertically through the extension wall surface, wherein the driving shaft and the plurality of rotating shafts are parallel to each other and located in the same plane; and The active rod is a rod-shaped structure, one end of which is fixedly connected to the active shaft, and the other end of which is rotatably connected to the head end of the starting rotating rod through the connecting rod. The active rod is coplanar with the rotating rod.

5. The split-type damper with a connecting rod mechanism according to claim 4, characterized in that: in, The split-type regulating damper also includes a servo motor, The servo motor is connected to the rotating shaft or the driving shaft, thereby driving the rotating shaft or the driving shaft to rotate.

6. The split-type damper with a connecting rod mechanism according to claim 4, characterized in that: in, The active rod and the starting end rotating rod have the same rotation angle and size.

7. The split-type damper with a connecting rod mechanism according to claim 4, characterized in that: in, The length of the active rod is recorded as x. When the damper blade is fully closed, the active rod faces the rear of the damper housing and forms an angle of 45° with the bottom of the damper housing. The starting end rotating rod comprises a first swing arm and a second swing arm, the length of the first swing arm and the second swing arm are both x, the two are connected to each other and are 135 degrees apart, the connection between the two is fixedly connected to the corresponding rotating shaft, the first swing arm and the active rod are parallel to each other, and the ends of the two are indirectly connected through the rotatable connecting rod, The intermediate rotating rod comprises a third swing arm and a fourth swing arm, the length of the third swing arm and the fourth swing arm are both x, the two are connected to each other and form a 90° angle, and the connection between the two is fixedly connected to the corresponding rotating shaft, The length of the terminal rotating rod is x, and the terminal rotating rod in the initial state is vertically facing the rear of the damper housing. In the initial state, the connecting rod connected between the beginning and the end of the starting rotating rod, the middle rotating rod and the end rotating rod is at an angle of 135° or 45° to the bottom of the damper housing, and the length of the connecting rod is 8. The split-type damper with a connecting rod mechanism according to any one of claims 4 to 7, Features: in, The connecting rod comprises: Threaded rod; and Two nuts are adjustably screwed to the two ends of the threaded rod, one end of the nut has an indented internal threaded hole that matches and screws with the threaded rod, and the other end can be rotatably connected to the head end or tail end of the rotating rod or the active rod.

9. The split-type damper with a connecting rod mechanism according to claim 7, characterized in that: in, The shaft ends of the rotating shaft and the driving shaft are polygonal. The end of the active rod, the connection between the first swing arm and the second swing arm, the connection between the third swing arm and the fourth swing arm, and the end of the terminal rotating rod are all provided with a sleeve with a polygonal through hole matching the shaft end of the corresponding rotating shaft or the active shaft, and a slot is provided on the vertical surface of the sleeve. The active rod, the start end rotating rod, the intermediate rotating rod and the end rotating rod are matched with the shaft ends of the corresponding rotating shaft or the active shaft through their respective shaft sleeves. The bolts passing through the slots fasten the sleeves to the corresponding shaft ends.

10. The split-type damper with a connecting rod mechanism according to claim 1, characterized in that: in, The split-type regulating damper also includes a mounting plate, The mounting plate is arranged at the air duct of the damper housing and is integrally formed with the damper housing, and is a rectangular hollow ring plate. The mounting plate is provided with a plurality of mounting holes for fixing the split-type regulating damper to a set air outlet device by means of bolts.

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