Multi-blade valve with adjustable connecting rod

Abstract

The utility model provides a multi-blade valve with an adjustable connecting rod, which comprises a valve main body and a transmission part, the valve main body comprises a rectangular valve body, and a cross rod and blades are arranged in the valve main body; an electric actuating mechanism of the transmission part is fixed to the extending edge of the valve body, and the torque of the electric actuating mechanism is transmitted through an adjustable connecting rod, a transmission connecting rod and a driven connecting rod to control blades to rotate. According to the valve structure, the length of the connecting rod can be adjusted, welding deformation of the valve body and the installation height difference between the electric actuating mechanism and the valve body can be compensated, complex procedures and steps of re-blanking, machining and replacement of the connecting rod are omitted, the length of the connecting rod is rapidly adjusted, assembly is rapid and reasonable, and production cost caused by tolerance or other machining problems is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, in particular to a multi-leaf valve with an adjustable connecting rod. Background Art

[0002] Multi-leaf valves are a common type of valves. Due to the requirements of specifications and structures, multi-axis and multi-leaf valves are set. Most active shafts are connected by connecting rods to drive other driven shafts to achieve the linkage of multiple blades, thereby adjusting the air volume or pressure of the pipeline and playing the role of regulating the ventilation system. The existing valve structure is mostly a rigid connection of the connecting rod, which is connected by a pin and a cotter pin. However, such a fixed-size connecting rod cannot be adjusted, and the processing error and assembly error cannot be compensated. It can only be re-cut and re-assembled by measuring the error, which is complicated and labor-intensive. Especially when the valve installation position relative to the actuator is on the upper left, upper right, lower left, and lower right sides, there are deformations and errors in the welding of the valve body and the welding of the actuator bracket. There is a difference between the actual and theoretical values ​​of this type of size. The rigidly set size only has a tolerance and cannot make up for the difference. Therefore, further improving the connecting rod form based on the structure of the existing product can meet its adjustable requirements and conveniently and quickly handle the installation error problem. Summary of the invention

[0003] The purpose of the embodiment of the utility model is to provide a multi-leaf valve with an adjustable connecting rod to solve the technical problem that the connecting rod form of the existing multi-leaf valve rigid connection cannot make up for the defects of processing error and assembly error during installation;

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is a multi-leaf valve with an adjustable connecting rod, comprising a valve body and a transmission part, wherein the valve body comprises a valve body; the valve body is a rectangular frame; a vertical side of the rectangular frame extends upward from the frame along the vertical direction, and a horizontal axis is arranged in the valve body from top to bottom; one end of the horizontal axis is inserted into the bearing end cover on the shorter vertical side of the valve body, and the other end horizontally extends out of the bearing cover on the longer vertical side of the valve body and extends out of the valve body; a rolling bearing is arranged between the bearing end cover, the bearing cover and the horizontal axis; blades are arranged on the horizontal axis, and a rotary arm is arranged at the end of the horizontal axis extension;

[0005] The transmission part comprises a transmission connecting rod, an adjustable connecting rod and an electric actuator.

[0006] Furthermore, the number of horizontal axes is three or more.

[0007] Furthermore, the electric actuator is fixed to the inner side of the longer vertical side extension of the valve body by an L-shaped bracket; the transmission shaft of the electric mechanism passes through the bearing cover on the valve body and extends out of the valve body, and a swing arm is arranged at the end of the extension part, and the swing arm on the transmission shaft of the electric mechanism is connected to one end of the adjustable connecting rod, and the other end of the adjustable connecting rod is simultaneously connected to the swing arm on the first horizontal axis from top to bottom.

[0008] Furthermore, the swing arms of the first horizontal axis and the last horizontal axis from top to bottom are respectively connected to the two ends of the transmission connecting rod; the swing arms on the remaining horizontal axes are connected through a driven connecting rod, and the driven connecting rod is also hinged to the rod portion of the transmission connecting rod.

[0009] Furthermore, the swing arm is connected to the transmission shaft, the transverse shaft, the adjustable connecting rod, the transmission connecting rod and the driven connecting rod of the electric actuator through a pin shaft, a flat washer and a cotter pin.

[0010] Furthermore, the adjustable connecting rod includes a left-handed connecting rod, a first nut, a connecting rod sleeve, a second nut and a right-handed connecting rod; the left-handed connecting rod and the right-handed connecting rod include a threaded rod portion and a connecting rod portion, the thread of the threaded portion of the left-handed connecting rod is left-handed; the threaded portion of the right-handed connecting rod is right-handed, and the connecting rod sleeve is a hollow cylinder with a thread arranged inside; the threaded rod portion of the left-handed connecting rod is first screwed into the first nut and the connecting rod sleeve, adjusted by the screwing depth, and positioned by the first nut; the threaded rod portion of the right-handed connecting rod is first screwed into the nut and the connecting rod sleeve, adjusted by the screwing depth, and positioned by the second nut.

[0011] Furthermore, the structures of the driving connecting rod and the driven connecting rod are the same as those of the adjustable connecting rod.

[0012] The beneficial effect of the utility model is that the adjustable connecting rod design of the utility model is aimed at the cumulative errors that may occur in the manufacturing and assembly process of the valve components. By adjusting the specific structure of the connecting rod, it can effectively compensate for the processing and assembly deviations of the valve components and ensure the smooth installation of the transmission device. This function significantly improves the convenience and rationality of the installation process, enhances the adaptability of the transmission parts to different working conditions, and is conducive to improving production efficiency and reducing additional costs such as rework or parts replacement caused by errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1It is a schematic diagram of the overall structure of the valve, where (a) is the front view of the valve and (b) is the side view of the valve transmission side.

[0015] Figure 2 It is a schematic diagram of the adjustable connecting rod structure.

[0016] Figure 3 It is a schematic diagram of the installation of the adjustable connecting rod.

[0017] In the figure, 1. electric actuator; 2. L-shaped bracket; 3. valve body; 4. adjustable connecting rod; 5. horizontal axis; 6. swing arm; 7. driven connecting rod; 8. rolling bearing; 9. bearing end cover; 10. left-hand connecting rod; 11. first nut; 12. connecting rod sleeve; 13. second nut; 14. right-hand connecting rod; 15. pin shaft; 16. flat washer; 17. cotter pin; 18. bearing cover; 19. transmission connecting rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] Figures 1 to 3 is a schematic diagram of the structure of a multi-leaf valve shown in an embodiment of the utility model, wherein Figure 1 It is the overall schematic diagram of the multi-leaf valve. Figure 1 As shown, the valve of the utility model is mainly composed of two parts. The first part is the valve body, which is mainly composed of a valve body 3, a blade, and a horizontal axis 5. The valve body 3 is a rectangular frame, and one vertical side of the rectangular frame is longer and extends upward in the vertical direction. Multiple horizontal axes 5 are arranged from top to bottom inside the rectangular frame of the valve body 3. The valve shown in the attached figure of this embodiment is provided with 5 horizontal axes 5, and more than three can be arranged according to actual needs; the horizontal axis 5 is arranged horizontally, and one end of the horizontal axis 5 is inserted into the bearing end cover 9 on the shorter vertical side of the valve body 3, and a rolling bearing 8 is arranged between the bearing end cover 9 and the horizontal axis 5, and the other end horizontally extends out of the bearing cover 18 on the longer vertical side of the valve body 3 and extends outside the valve body 3, and a rolling bearing 8 is arranged between the bearing cover 18 and the horizontal axis 5; the horizontal axis 5 is also fixed with blades.

[0021] The second part is the rotating part, including the transmission connecting rod 19, the driven connecting rod 7, the adjustable connecting rod 4, and the electric actuator 1; the electric actuator 1 is fixed to the inner side of the longer vertical side extension part of the valve body 3 through the L-shaped bracket 2; the transmission shaft of the electric mechanism passes through the bearing cover 18 on the valve body 3 and extends out of the valve body 3, and is connected to one end of the adjustable connecting rod 4 through the swing arm 6, and the other end of the adjustable connecting rod 4 is simultaneously connected to the first horizontal axis 5 from top to bottom and one end of the transmission connecting rod 19 through the swing arm 6; the transmission connecting rod 19 is connected to the bottom horizontal axis 5 through the swing arm 6, and the middle part horizontal axis 5 is hinged to the transmission connecting rod 19 through the swing arm 6 or the driven connecting rod 7. The attached figure of this embodiment only shows one connection method, and the specific connection method of the driven connecting rod 7 can be selected according to needs or the number of horizontal axes 5. The swing arm 6 is hinged to the transmission shaft or horizontal axis 5 of the electric actuator 1 extending out of the valve body 3 through the pin 15, the flat washer 16, and the cotter pin 17.

[0022] See Figure 2 The adjustable connecting rod 4 is mainly composed of a left-handed connecting rod 10, a first nut 11, a connecting rod sleeve 12, a second nut 13 and a right-handed connecting rod 14; the left-handed connecting rod 10 and the right-handed connecting rod 14 include a threaded rod portion and a connecting rod portion, the thread of the threaded portion of the left-handed connecting rod 10 is left-handed; the threaded portion of the right-handed connecting rod 14 is right-handed, and the connecting rod sleeve 12 is a hollow cylinder with a thread arranged inside; the threaded rod portion of the left-handed connecting rod 10 is first screwed into the first nut 11 and the connecting rod sleeve 12, and the depth of screwing is adjusted, and the positioning is performed by the first nut 11; the threaded rod portion of the right-handed connecting rod 14 is first screwed into the nut and the connecting rod sleeve 12, and the depth of screwing is adjusted, and the positioning is performed by the second nut 13; the effect of adjusting the length can be achieved in both directions.

[0023] The installation form of the adjustable connecting rod 4 is shown in Figure 3 The adjustable connecting rod 4 is connected to the swing arm 6 through a pin 15, a flat washer 16 and a cotter pin 17 to transmit force and torque between different axes.

[0024] Example 2

[0025] The driving connecting rod 19 and the driven connecting rod 7 are all replaced by the adjustable connecting rod 4, and the remaining structure is the same as that of the first embodiment.

[0026] To sum up, the installation and use form of the adjustable connecting rod 4 of the multi-leaf valve can meet the requirements of adjusting the connecting rod length in this valve structure, and at the same time cooperate with the swing arm 6 to compensate for the welding deformation of the valve body 3 and the installation height difference between the bracket 2 and the valve body 3, eliminating the complicated processes and steps of re-cutting and processing a new connecting rod, quickly adjusting the connecting rod length, and assembling quickly and reasonably.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A multi-leaf valve with an adjustable connecting rod, comprising a valve body and a transmission part, characterized in that: The valve body comprises a valve body (3); the valve body (3) is a rectangular frame; a vertical side of the rectangular frame is higher than the frame and extends upward in the vertical direction, and a transverse axis (5) is arranged in the valve body (3) from top to bottom; one end of the transverse axis (5) is inserted into a bearing end cover (9) on the shorter vertical side of the valve body (3), and the other end horizontally extends out of a bearing cover (18) on the longer vertical side of the valve body (3) and extends outward of the valve body (3); a rolling bearing (8) is arranged between the bearing end cover (9), the bearing cover (18) and the transverse axis (5); a blade is arranged on the transverse axis (5), and a rotary arm (6) is arranged at the end of the extension portion of the transverse axis (5); The transmission part comprises a transmission connecting rod (19), an adjustable connecting rod (4), and an electric actuator (1).

2. A multi-leaf valve with an adjustable connecting rod according to claim 1, characterized in that: The number of horizontal axes (5) is three or more.

3. A multi-leaf valve with an adjustable connecting rod according to claim 1, characterized in that: The electric actuator (1) is fixed to the inner side of the longer vertical side extension of the valve body (3) via an L-shaped bracket (2); the transmission shaft of the electric actuator passes through the bearing cover (18) on the valve body (3) and extends outward from the valve body (3); a swing arm (6) is provided at the end of the extension; the swing arm (6) on the transmission shaft of the electric actuator is connected to one end of the adjustable connecting rod (4); and the other end of the adjustable connecting rod (4) is simultaneously connected to the swing arm (6) on the first horizontal axis (5) from top to bottom.

4. A multi-leaf valve with an adjustable connecting rod according to claim 3, characterized in that: From top to bottom, the swing arm (6) of the first horizontal axis (5) and the swing arm (6) of the last horizontal axis (5) are respectively connected to the two ends of the transmission connecting rod (19); the swing arms (6) on the remaining horizontal axes (5) are connected via a driven connecting rod (7), and the driven connecting rod (7) is also hinged to the rod portion of the transmission connecting rod (19).

5. A multi-leaf valve with an adjustable connecting rod according to any one of claims 1, 3 and 4, characterized in that: The swing arm (6) is connected to the transmission shaft, the transverse shaft (5), the adjustable connecting rod (4), the transmission connecting rod (19), and the driven connecting rod (7) of the electric actuator (1) via a pin shaft (15), a flat washer (16), and a cotter pin (17).

6. A multi-leaf valve with an adjustable connecting rod according to any one of claims 1, 3 and 4, characterized in that: The adjustable connecting rod (4) comprises a left-handed connecting rod (10), a first nut (11), a connecting rod sleeve (12), a second nut (13) and a right-handed connecting rod (14); the left-handed connecting rod (10) and the right-handed connecting rod (14) comprise a threaded rod portion and a connecting rod portion, the thread of the threaded portion of the left-handed connecting rod (10) being left-handed; the thread of the threaded portion of the right-handed connecting rod (14) being right-handed; and the connecting rod sleeve (12) being a hollow cylinder with threads arranged inside; the threaded rod portion of the left-handed connecting rod (10) is first screwed into the first nut (11) and the connecting rod sleeve (12), the depth of screwing is adjusted, and the first nut (11) is used to position the rod; the threaded rod portion of the right-handed connecting rod (14) is first screwed into the nut and the connecting rod sleeve (12), the depth of screwing is adjusted, and the rod is positioned by the second nut (13).

7. A multi-leaf valve with an adjustable connecting rod according to any one of claims 1, 3 and 4, characterized in that: The structures of the transmission connecting rod (19) and the driven connecting rod (7) are the same as those of the adjustable connecting rod (4).

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