CN217813698U - Pneumatic louver valve and engine - Google Patents

Abstract

The utility model belongs to the technical field of the steamer engine, a pneumatic louver valve and engine are disclosed. The pneumatic louver valve comprises a valve body, a transmission assembly and a driving assembly, wherein the valve body is of a rectangular structure or a square structure, the valve body is provided with a partition plate, the partition plate divides the valve body into at least two channels, the valve body is further provided with at least one rotatable valve shaft and at least two valve plates, the valve plates are fixedly connected with the valve shaft and correspond to the at least two channels one to one, the valve plates are used for sealing the channels, when the valve plates seal the channels, at least one side edge of each valve plate is attached to the partition plate, the transmission assembly comprises a mounting seat and a transmission mechanism, the driving assembly comprises a pneumatic device, the pneumatic device is in transmission connection with the valve shafts through the transmission mechanism, and the pneumatic device can control the rotation of the valve shafts. The valve body of the pneumatic louver valve is divided into a plurality of channels, the channels correspond to the valve plates, and at least one side edge of each valve plate is attached to the partition plate, so that the pneumatic louver valve has good sealing performance.

Description

Pneumatic louver valve and engine

Technical Field

The utility model relates to a steamer engine technical field especially relates to pneumatic louver valve and engine.

Background

The intake process and the exhaust process of the engine are collectively called as a scavenging process, and the task of the scavenging process is to remove exhaust gas in the cylinder and charge fresh air as much as possible, which is an important condition for ensuring the dynamic property of the engine. The louver valve is an important part of an air intake and exhaust system of a marine engine, and due to the importance of a ventilation process, the louver valve is required to have good sealing performance so as to prevent other substances such as water and the like from entering the engine while ensuring normal air intake and exhaust of the engine.

The louver valve in the prior art usually has direct contact between the valve plates, and because the valve plates are movable, the problem of air leakage caused by abrasion of the valve plates is easy to occur, and the sealing performance of the louver valve is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic louver valve and engine, this pneumatic louver valve have good leakproofness, can avoid debris to get into the engine.

To achieve the purpose, the utility model adopts the following technical proposal:

pneumatic louver valve, pneumatic louver valve includes:

the valve body is of a rectangular structure or a square structure and is provided with a partition plate, the partition plate divides the valve body into at least two channels, the valve body is also provided with at least one rotatable valve shaft and at least two valve plates, the valve plates are fixedly connected with the valve shaft, the at least two valve plates correspond to the at least two channels one by one, the valve plates are used for sealing the channels, and when the valve plates seal the channels, at least one side edge of each valve plate is attached to the partition plate;

the transmission assembly comprises a mounting seat and a transmission mechanism, the transmission mechanism is arranged on the mounting seat, and the transmission mechanism is in transmission connection with the valve shaft;

the driving assembly is arranged on the mounting seat and comprises a pneumatic device, the output end of the pneumatic device is in transmission connection with the transmission mechanism, and the driving assembly controls the rotation of the valve shaft through the transmission mechanism.

Preferably, the partition plate comprises a first partition plate and a second partition plate, the first partition plate and the second partition plate are arranged perpendicularly, the first partition plate and the second partition plate divide the valve body into four channels, the valve body is provided with a first valve shaft and a second valve shaft, the first valve shaft and the second valve shaft are arranged in parallel at intervals, the first valve shaft is fixedly provided with a first valve plate and a second valve plate at intervals, the first valve plate and the second valve plate are located on the same plane, the second valve shaft is fixedly provided with a third valve plate and a fourth valve plate at intervals, the third valve plate and the fourth valve plate are located on the same plane, and the first valve plate, the second valve plate, the third valve plate and the fourth valve plate respectively seal the four channels.

Preferably, the transmission mechanism comprises a first rotating shaft and a connecting rod assembly, the first rotating shaft is rotatably arranged on the mounting seat and is in transmission connection with the output end of the pneumatic device, and the first rotating shaft is in transmission connection with the first valve shaft and the second valve shaft through the connecting rod assembly.

Preferably, the link mechanism includes a first rotating rod, a second rotating rod, a first link rod and a second link rod, the first rotating rod is coaxially and fixedly connected with the first rotating shaft, the first rotating rod is coaxially connected with the first valve shaft, the first rotating rod can drive the first valve shaft to rotate, the second rotating rod is coaxially connected with the second valve shaft, the second rotating rod can drive the second valve shaft to rotate, the first rotating rod is fixedly connected with a first connecting piece, the second rotating rod is fixedly connected with a second connecting piece, the first connecting piece and the second connecting piece are arranged in parallel, one end of the first connecting piece and one end of the second connecting piece are respectively hinged to two ends of the first link rod, and the other end of the first connecting piece and the other end of the second connecting piece are respectively hinged to two ends of the second link rod.

Preferably, the first connecting piece is provided with a first through hole, the second connecting piece is provided with a second through hole, the first rotating rod penetrates through the first through hole and is fixedly connected with the first connecting piece through the first fixing piece, and the second rotating rod penetrates through the second through hole and is fixedly connected with the second connecting piece through the second fixing piece.

Preferably, the first connecting piece is provided with a third through hole, the first connecting rod is provided with a fourth through hole, and the first bolt sequentially penetrates through the third through hole and the fourth through hole to be in threaded connection with the nut, so that the first connecting piece is rotatably connected with the first connecting rod.

Preferably, the mounting seat comprises a first U-shaped plate, a second U-shaped plate and a mounting plate, the first U-shaped plate, the second U-shaped plate and the mounting plate are sequentially and fixedly connected, the first valve shaft and the second valve shaft sequentially penetrate through the mounting plate and the second U-shaped plate and then are respectively and fixedly connected with the first connecting piece and the second connecting piece, the first rotating shaft is rotatably arranged on the first U-shaped plate, and the driving assembly is mounted on the first U-shaped plate.

Preferably, the pneumatic louver valve further comprises a lubricating assembly, the lubricating assembly is arranged on the mounting plate, and the lubricating assembly is located between the mounting plate and the second U-shaped plate.

Preferably, the drive assembly further comprises a manual brake handle capable of controlling rotation of the output of the pneumatic device.

The utility model discloses still disclose an engine, this engine includes foretell pneumatic louver valve.

The utility model has the advantages that:

the utility model discloses a pneumatic louver valve includes the valve body, drive assembly and mount pad, the valve body is provided with the baffle, the baffle divide into two at least passageways with the valve body, the valve body still sets up at least one rotatable valve shaft and two at least valve plates, valve plate and valve shaft fixed connection, two at least valve plates and two at least passageway one-to-ones, the valve plate is used for the closed passage, and when the valve plate closed passage, at least one curb plate of valve plate can laminate with the baffle, drive assembly passes through the rotation of drive mechanism control valve shaft and then controls the break-make of louver valve, the valve body of this pneumatic louver valve divide into a plurality of passageways, a plurality of passageways correspond with a plurality of valve plates, and at least one side and the baffle laminating of valve plate, make this pneumatic louver valve have good sealing performance.

The utility model discloses still disclose an engine, this engine is installed foretell pneumatic louver valve, and not only the leakproofness is good for this engine has better ventilation efficiency, has still guaranteed the power performance of engine.

Drawings

FIG. 1 is a schematic structural view of a pneumatic louver valve of the present invention;

FIG. 2 is a schematic structural view of the valve body of the present invention;

FIG. 3 is a schematic structural view of the driving mechanism and a portion of the mounting base of the present invention;

fig. 4 is an enlarged view of a portion of fig. 3 according to the present invention;

fig. 5 is a schematic view of the connection between the pneumatic device and the driving mechanism of the present invention.

In the figure:

1. a pneumatic louver valve;

10. a valve body; 11. a first valve shaft; 111. a first valve plate; 112. a second valve plate; 12. a second valve shaft; 121. a third valve plate; 122. a fourth valve plate; 13. a first separator; 14. a second separator;

20. a transmission assembly; 21. a mounting base; 211. a first U-shaped plate; 212. a second U-shaped plate; 213. mounting a plate; 22. a transmission mechanism; 221. a first rotating shaft; 231. a first rotating lever; 2311. a first connecting member; 2312. an annular boss; 2313. a spring pin; 232. a second rotating lever; 2321. a second connecting member; 233. a first link; 234. a second link; 25. a lubrication assembly;

30. a drive assembly; 31. a pneumatic device; 32. the handle is braked manually.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The louver valve in the prior art is generally characterized in that valve plates are in contact with the valve plates, and the valve plates are movable, so that the movable surface is easily contacted with the movable surface to be worn, the valve plates are easily subjected to air leakage and the like, and the sealing performance of the louver valve is damaged.

Accordingly, the present embodiment provides a pneumatic louver valve and an engine.

As shown in fig. 1 and fig. 2, the pneumatic louver valve 1 provided in this embodiment includes a valve body 10, a transmission assembly 20, a driving assembly 30, and a mounting base 21, where the valve body 10 is in a rectangular structure or a square structure, the valve body 10 is provided with a partition plate, the partition plate divides the valve body 10 into at least two passages, the valve body 10 is further provided with at least one rotatable valve shaft and at least two valve plates, the valve plates are fixedly connected to the valve shaft, the at least two valve plates are in one-to-one correspondence with the at least two passages, and the valve plates are used for closing the passages, and when the valve plates close the passages, at least one side edge of the valve plate is attached to the partition plate. Specifically, in this embodiment, the valve body 10 is a rectangular structure, the partition plate includes a first partition plate 13 and a second partition plate 14, the first partition plate 13 is disposed perpendicular to the second partition plate 14, the valve body 10 is divided into four passages, in this embodiment, the four passages are the same in size, the valve body 10 is provided with a rotatable first valve shaft 11 and a rotatable second valve shaft 12, the first valve shaft 11 is disposed parallel to and spaced from the second valve shaft 12, the first valve shaft 11 and the second valve shaft 12 are parallel to the first partition plate 13, the first valve shaft 11 is disposed at an interval and fixedly provided with a first valve plate 111 and a second valve plate 112, the second valve shaft 12 is disposed at an interval and fixedly provided with a third valve plate 121 and a fourth valve plate 122, the first valve plate 111 and the second valve plate 112 are located on the same plane, the third valve plate 121 and the fourth valve plate 122 are located on the same plane, the first valve plate 111, the second valve plate 112, the third valve plate 121 and the fourth valve plate 122 are used for respectively closing the four passages, in this embodiment, the first valve plate 111, the second valve plate 112, the third valve plate 121, the fourth valve plate 122 and the fourth plate 122 are located on the same plane, and the third plate 122 are located on the same side of the first valve plate 111, the fourth plate 122, and the fourth plate 122 are located on the same plane, where the same side of the third plate 111, the fourth plate 122, and the fourth plate 122, where the fourth plate 122, the fourth plate 111, the fourth plate 122, and the fourth plate 122 are located on the same side of the same plane, and the third plate 121, and the fourth plate 122. This setting can make valve plate and baffle butt, and the baffle is connected with the lateral wall all around of valve body 10, so the baffle has higher intensity, can avoid taking place gas leakage phenomenon between valve plate and the valve plate, promotes sealing performance. In other embodiments, can increase the quantity of baffle according to actual service environment or scene for the passageway quantity increases, and the quantity of valve plate matches with passageway quantity on corresponding increase valve shaft and the valve shaft, just can make the valve plate and the baffle laminating of louver valve, guarantees sealing performance. The transmission assembly 20 includes a mounting base 21 and a transmission mechanism 22, the transmission mechanism 22 is disposed on the mounting base 21, and the transmission mechanism 22 is in transmission connection with the valve shaft. The driving assembly 30 is disposed on the mounting seat 21, and the driving assembly 30 includes a pneumatic device 31, an output end of the pneumatic device 31 is in transmission connection with the transmission mechanism 22, the transmission mechanism 22 is in transmission connection with the first valve shaft 11 and the second valve shaft 12, the pneumatic device 31 controls rotation of the first valve shaft 11 and the second valve shaft 12 through the transmission mechanism 22, and further controls opening and closing of the pneumatic louver valve 1, the specific transmission mechanism 22 can control clockwise rotation or counterclockwise rotation or non-rotation of the first valve shaft 11 and the second valve shaft 12, when the pneumatic louver valve 1 is mounted on a pipeline, the mounting seat 21 can also be fixedly mounted on a pipeline wall or other supporting members, and mounting stability of the pneumatic louver valve 1 is ensured.

Further, as shown in fig. 3 to 5, the transmission mechanism 22 includes a first rotating shaft 221 and a connecting rod assembly, the first rotating shaft 221 is rotatably disposed on the mounting seat 21, the first rotating shaft 221 is in transmission connection with an output end of the pneumatic device 31, the pneumatic device 31 can control the rotation of the first rotating shaft 221, and the first rotating shaft 221 is in transmission connection with the first valve shaft 11 and the second valve shaft 12 through the connecting rod assembly. Specifically, in this embodiment, the end of the first rotating shaft 221 is a square structure, and the output end of the corresponding pneumatic device 31 is a square groove, and the square groove is in plug-in fit with the first rotating shaft 221. The structure is convenient to disassemble and assemble and high in transmission reliability.

Further, the link assembly includes a first rotating rod 231, a second rotating rod 232, a first link 233 and a second link 234, the first rotating rod 231 is coaxially and fixedly connected to the first rotating shaft 221, the first rotating rod 231 is coaxially connected to the first valve shaft 11, the first rotating rod 231 can drive the first valve shaft 11 to rotate, the second rotating rod 232 is coaxially connected to the second valve shaft 12, the second rotating rod 232 can drive the second valve shaft 12 to rotate, the first rotating rod 231 is fixedly connected to a first connecting member 2311, the second rotating rod 232 is fixedly connected to a second connecting member 2321, the first connecting member 2311 and the second connecting member 2321 are arranged in parallel, one end of the first connecting member 2311 and one end of the second connecting member 2321 are respectively hinged to two ends of the first link 233, and the other end of the first connecting member 2311 and the other end of the second connecting member 2321 are respectively hinged to two ends of the second link 234. Specifically, in this embodiment, the first rotating rod 231 is in inserting fit with the first valve shaft 11, and the second rotating rod 232 is in inserting fit with the second valve shaft 12, which is not only convenient for dismounting, but also has better transmission performance, and the first rotating rod 231 is coaxially and fixedly connected with the first rotating shaft 221, so that it can be ensured that the rotation of the pneumatic device 31 can be synchronously transmitted to the first rotating rod 231, and then transmitted to the first valve shaft 11, and the first rotating rod 231 and the second rotating rod 232 are connected through the first connecting part 2311, the second connecting part 2321, the first connecting rod 233 and the second connecting rod 234, so that the second rotating rod 232 and the first rotating rod 231 synchronously rotate, and finally the first rotating rod 11 and the second valve shaft 12 synchronously rotate, so that the pneumatic louver valve 1 is synchronously opened and closed, and the performance of the pneumatic louver valve 1 is ensured. In other embodiments, when the number of the valve shafts is increased, the same effect can be achieved by correspondingly increasing the number of the rotating rods, the connecting pieces and the connecting rods.

Further, the first connecting member 2311 has a first through hole, the second connecting member 2321 has a second through hole, the first rotating rod 231 penetrates through the first through hole and is fixedly connected to the first connecting member 2311 through the first fixing member, and the second rotating rod 232 penetrates through the second through hole and is fixedly connected to the second connecting member 2321 through the second fixing member. Specifically, in this embodiment, the first rotating rod 231 has a first connecting hole, the first connecting piece 2311 is convexly provided with an annular boss 2312, the annular boss 2312 has a second connecting hole perpendicular to the first rotating rod 231, the first fixing piece is a spring pin 2313, the spring pin 2313 sequentially passes through the second connecting hole and the first connecting hole to fixedly connect the first connecting piece 2311 and the first rotating piece, and the connection manner of the second rotating rod 232 and the second connecting piece 2321 is the same as the connection manner of the first rotating rod 231 and the second connecting piece 2321.

Further, the first connecting piece 2311 is provided with a third through hole, the first connecting rod 233 is provided with a fourth through hole, and the first bolt sequentially penetrates through the third through hole and the fourth through hole to be in threaded connection with the nut, so that the first connecting piece 2311 is rotatably connected with the first connecting rod 233. Specifically, in this embodiment, the first connecting member 2311 is connected to the first link 233 by bolts, which has the advantages of easy assembly and disassembly and reliable transmission. And the first and second links 2311 and 234, the second link 2321 and the first link 233, and the second link 2321 and the second link 234 are connected in the same manner as the first link 2311 and the first link 233. In other embodiments, when the quantity of valve shaft increases, the quantity of dwang, connecting piece and connecting rod all increases, also can set up the connecting rod that is located same one side into integrated into one piece structure, only on the connecting rod increase the quantity of through-hole corresponding with the quantity of connecting piece can, can also increase the pivoted synchronism of dwang, guarantee the synchronous rotation of valve shaft of pneumatic louver valve 1, guarantee the synchronism of the valve plate of pneumatic louver valve 1.

Further, the mounting seat 21 includes a first U-shaped plate 211, a second U-shaped plate 212, and a mounting plate 213, the first U-shaped plate 211, the second U-shaped plate 212, and the mounting plate 213 are sequentially and fixedly connected, the first valve shaft 11 and the second valve shaft 12 sequentially penetrate through the mounting plate 213 and the second U-shaped plate 212 and then are respectively and fixedly connected with the first connecting piece 2311 and the second connecting piece 2321, the first rotating shaft 221 is rotatably disposed on the first U-shaped plate 211, and the driving assembly 30 is mounted on the first U-shaped plate 211. Specifically, the first U-shaped plate 211, the second U-shaped plate 212 and the mounting plate 213 are connected by bolts and nuts, so that the connection stability of the first U-shaped plate 211, the second U-shaped plate 212 and the mounting plate 213 can be ensured, the mounting and dismounting are facilitated, and the convenience in maintenance of the mounting base 21 is ensured; the mounting base 21 is provided with a connecting piece which can be connected with an external supporting piece, so that the stability of the driving assembly 30 and the transmission mechanism 22 is ensured. First pivot 221 stretches out first U type board 211 and is connected with pneumatic means 31 transmission, and drive assembly 30 is connected in first U type board 211, can guarantee that pneumatic means 31 and first pivot 221 transmission are stable.

Further, the pneumatic louver valve 1 further includes a lubricating assembly 25, the lubricating assembly 25 is disposed on the mounting plate 213, and the lubricating assembly 25 is located between the mounting plate 213 and the second U-shaped plate 212. Specifically, in this embodiment, the lubricating assembly 25 can provide lubrication for the first rotating rod 231 and the second rotating rod 232, so as to avoid the phenomenon that the first rotating rod 231 and the second rotating rod 232 are clamped with the mounting plate 213 and the second U-shaped plate 212, ensure that the first rotating rod 231 and the second rotating rod 232 rotate smoothly, and further ensure the opening and closing performance of the pneumatic louver valve 1.

Further, the driving assembly 30 further includes a manual brake handle 32, and the manual brake handle 32 can control the rotation of the output end of the pneumatic device 31. Specifically, in this embodiment, the manual brake handle 32 can control rotation of the output end of the pneumatic device 31, and when the pneumatic device 31 is abnormal, a person can twist the manual brake handle 32 to control rotation of the output end of the pneumatic device 31, so as to ensure temporary opening or closing of the pneumatic louver valve 1, avoid damage to other components caused by the fact that the pneumatic louver valve 1 cannot be normally opened or closed, and ensure safety of the entire system.

The embodiment also discloses an engine which comprises the pneumatic louver valve 1.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements, and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. Pneumatic louver valve, characterized in that it comprises:

the valve body (10) is of a rectangular structure or a square structure, a partition plate is arranged on the valve body (10), the partition plate divides the valve body (10) into at least two channels, the valve body (10) is further provided with at least one rotatable valve shaft and at least two valve plates, the valve plates are fixedly connected with the valve shaft, the at least two valve plates correspond to the at least two channels one by one, the valve plates are used for sealing the channels, and when the valve plates seal the channels, at least one side edge of each valve plate is attached to the partition plate;

the transmission assembly (20) comprises a mounting seat (21) and a transmission mechanism (22), the transmission mechanism (22) is arranged on the mounting seat (21), and the transmission mechanism (22) is in transmission connection with the valve shaft;

the driving assembly (30), the driving assembly (30) set up in mount pad (21), driving assembly (30) include pneumatic means (31), pneumatic means's (31) output with drive mechanism (22) transmission is connected, driving assembly (30) are through drive mechanism (22) control the rotation of valve shaft.

2. Pneumatic louver valve according to claim 1, wherein the partition comprises a first partition (13) and a second partition (14), the first partition (13) and the second partition (14) are arranged perpendicularly, the first partition (13) and the second partition (14) divide the valve body (10) into four passages, the valve body (10) is provided with a first valve shaft (11) and a second valve shaft (12), the first valve shaft (11) and the second valve shaft (12) are arranged in parallel and at an interval, the first valve shaft (11) is provided with a first valve plate (111) and a second valve plate (112) at an interval, the first valve plate (111) and the second valve plate (112) are located in the same plane, the second valve shaft (12) is provided with a third valve plate (121) and a fourth valve plate (122) at an interval and fixed, the third valve plate (121) and the fourth valve plate (122) are located in the same plane, and the first valve plate (111), the second valve plate (112), the third valve plate (121) and the fourth plate (122) are used for closing the four passages, respectively.

3. Pneumatic louver valve according to claim 2, wherein the transmission mechanism (22) comprises a first rotating shaft (221) and a connecting rod assembly, the first rotating shaft (221) is rotatably arranged on the mounting seat (21), the first rotating shaft (221) is in transmission connection with the output end of the pneumatic device (31), and the first rotating shaft (221) is in transmission connection with the first valve shaft (11) and the second valve shaft (12) through the connecting rod assembly.

4. Pneumatic louver valve according to claim 3, characterized in that the linkage assembly comprises a first rotation rod (231), a second rotation rod (232), a first linkage (233) and a second linkage (234), the first rotation rod (231) being coaxially and fixedly connected to the first rotation shaft (221), and the first rotation rod (231) being coaxially connected to the first valve shaft (11), the first rotation rod (231) being capable of driving the first valve shaft (11) to rotate, the second rotation rod (232) being coaxially connected to the second valve shaft (12), the second rotation rod (232) being capable of driving the second valve shaft (12) to rotate, the first rotation rod (231) being fixedly connected to a first connection member (2311), the second rotation rod (232) being fixedly connected to a second connection member (2321), and the first connection member (2311) being arranged in parallel to the second connection member (2321), one end of the first connection member (231) and one end of the second connection member (2321) being hinged to the other end of the first connection member (2311), and the other end of the second connection member (2311) being hinged to the second connection member (2311).

5. Pneumatic louver valve according to claim 4, characterized in that said first connection member (2311) has a first through hole and said second connection member (2321) has a second through hole, said first rotation rod (231) is arranged through said first through hole and fixedly connected to said first connection member (2311) by means of a first fixing member, and said second rotation rod (232) is arranged through said second through hole and fixedly connected to said second connection member (2321) by means of a second fixing member.

6. Pneumatic louver valve according to claim 4, characterized in that said first connection element (2311) has a third through hole and said first link (233) has a fourth through hole, a first bolt passing through said third through hole and said fourth through hole in sequence being screwed to a nut to hinge said first connection element (2311) to said first link (233).

7. The pneumatic louver valve according to claim 4, wherein the mounting seat (21) comprises a first U-shaped plate (211), a second U-shaped plate (212) and a mounting plate (213), the first U-shaped plate (211), the second U-shaped plate (212) and the mounting plate (213) are sequentially and fixedly connected, the first valve shaft (11) and the second valve shaft (12) sequentially penetrate through the mounting plate (213) and the second U-shaped plate (212) and then are respectively and fixedly connected with the first connecting piece (2311) and the second connecting piece (2321), the first rotating shaft (221) is rotatably arranged on the first U-shaped plate (211), and the driving assembly (30) is mounted on the first U-shaped plate (211).

8. Pneumatic louver valve according to claim 7, characterized in that it further comprises a lubricating assembly (25), said lubricating assembly (25) being arranged to said mounting plate (213) and said lubricating assembly (25) being located between said mounting plate (213) and said second U-shaped plate (212).

9. Pneumatic louver valve according to any one of claims 1 to 8, characterized in that said driving assembly (30) further comprises a manual brake handle (32), said manual brake handle (32) being able to control the rotation of the output of said pneumatic device (31).

10. An engine, characterized in that it comprises a pneumatic louver valve according to any one of claims 1-9.

Images