CN210239772U - Air inlet and outlet valve of marine engine - Google Patents
Air inlet and outlet valve of marine engine Download PDFInfo
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- CN210239772U CN210239772U CN201921167123.9U CN201921167123U CN210239772U CN 210239772 U CN210239772 U CN 210239772U CN 201921167123 U CN201921167123 U CN 201921167123U CN 210239772 U CN210239772 U CN 210239772U
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- rocker
- valve body
- shaft
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Abstract
The utility model provides a marine engine air intake and exhaust valve, includes the valve body, and air inlet and gas vent are established at the both ends of valve body, and air intake and exhaust valve still includes the drive division, and the drive division includes the motor, and the output shaft and the four-bar linkage of motor are connected, and the rocker of four-bar linkage is installed on the rocker shaft, still is connected with the valve block on the rocker shaft. The air inlet and outlet valve has the advantages of short response time, simple product structure and simple assembly process.
Description
Technical Field
The utility model belongs to the technical field of the engine technique and specifically relates to a marine engine air inlet and outlet valve is related to.
Background
The sequential supercharging technology means that two or more turbochargers are connected in parallel with a diesel engine, and the number of the turbochargers which are put into operation is changed according to different operation conditions of the diesel engine, so that the turbochargers can fully utilize the energy of exhaust gas to improve the efficiency of the turbine. The technology is an effective measure for improving the low-load performance of the diesel engine, and because the inlet valve and the exhaust valve are used for switching in and out of the supercharger in a sequential supercharging system, a control valve used in the technology is a key component for ensuring the effect of the sequential supercharging technology to be implemented.
According to the investigation of the applicant, at present, the domestic sequential pressurization technology is only researched and tested in various colleges and universities and is not put into batch application, and the control valve used in China at present is still a conventional industrial general pneumatic butterfly valve. The defects existing when the universal butterfly valve is directly used as a sequential pressurization technology are as follows: 1) the butterfly valve is driven by a cylinder or a hydraulic cylinder, the valve is large in size due to the driving, the length is generally larger than 800mm, and in addition, the fire hazard exists due to the low ignition point of hydraulic oil; 2) for the purpose of quick response of sequential pressurization, the sequential pressurization needs to accurately control the response time of a valve, and in the existing hydraulic driving scheme, a flow valve or a speed regulating valve needs to be added to realize adjustment and control of corresponding time.
Disclosure of Invention
An object of the utility model is to overcome the shortcoming that exists among the prior art, provide a match supercharging system's marine engine intake and exhaust valve in succession, this intake and exhaust valve has changed the drive mode to shorten response time and promote corresponding precision, and can effectively reduce the intake and exhaust valve volume, the technical scheme of adoption is: the utility model provides a marine engine air intake and exhaust valve, includes the valve body, air inlet and gas vent, its characterized in that are established at the both ends of valve body: the air inlet and exhaust valve further comprises a driving part, the driving part comprises a motor, an output shaft of the motor is connected with a four-bar linkage mechanism, a rocker of the four-bar linkage mechanism is installed on a rocker shaft, and a valve plate is further connected onto the rocker shaft.
The rocker shaft and the valve body are connected in the following way: one end of the rocker shaft is arranged in a blind hole shaft sleeve of the valve body, the other end of the rocker shaft is connected with the rocker after passing through a through hole of the valve body, a shaft sleeve is arranged in the through hole, and the shaft sleeve and the valve body are fixed by a pin.
In order to achieve the purposes of buffering and absorbing vibration, a spring is arranged between the valve body and the rocker, and a sealing gasket is arranged between the spring and the valve body.
In order to reduce the abrasion loss and prolong the service life of the air inlet and outlet valves, the blind hole shaft sleeve and the shaft sleeve are made of cobalt-based alloy materials.
In order to meet the requirement of high temperature resistance of the air inlet and outlet valve, the rocker shaft is made of high-temperature materials. The valve plate is made of heat-resistant cast steel.
In order to reduce the use of parts and reduce the volume, the motor is fixed on the valve body.
The beneficial effects of the utility model reside in that: the air inlet and outlet valve takes the motor as a power source, the response time is not required to be reduced due to additional parts, the air inlet and outlet valve is more suitable for use of a sequential pressurization system, the ECU control of the motor is realized by matching with CAN communication, the use is simple, and the control is accurate; this air inlet and outlet valve has simplified the product structure, compares with the product in the past, has reduced the motor support, and the motor is direct to be assembled in the valve body. The design of a rocker shaft is changed, the wear-resistant rings are reduced, the number of parts is less, the assembly is simple, and the cost is low; the air inlet and outlet valve is simple in assembly process and easy for batch production.
Drawings
Fig. 1 is a front view of the present invention, fig. 2 is a left side view of fig. 1, fig. 3 is a top view of fig. 1, fig. 4 is a sectional view a-a of fig. 3, in which 1 is a valve body, 2 is a motor, 3 is a four-bar linkage, 4 is a valve plate, 5 is a rocker shaft, 6 is a blind hole shaft sleeve, 7 is a shaft sleeve, 8 is a pin, 9 is a seal gasket, 10 is a spring, and 11 is a self-locking nut.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
The utility model discloses a marine engine air intake and exhaust valve, this air intake and exhaust valve can be better adaptation diesel engine's supercharging in succession system response time and control accuracy's requirement. The structure comprises a valve body 1, wherein an air inlet and an air outlet are arranged at two ends of the valve body 1, and the air inlet and the air outlet are connected with corresponding engine pipelines (not shown in the figure). The driving part of the air inlet and outlet valve comprises a motor 2, and the motor 2 is fixed on the valve body 1. An output shaft of the motor 2 is connected with a four-bar linkage mechanism 3, a rocker of the four-bar linkage mechanism 3 is installed on a rocker shaft 5, a valve plate 4 is further connected onto the rocker shaft 5, the four-bar linkage mechanism 3 can control the valve plate 4 to be opened at different angles, and the opening and closing of the valve plate 4 can control the cutting-in and cutting-out of the supercharger.
One end of the rocker shaft 5 is arranged in a blind hole shaft sleeve 6 of the valve body 1, the other end of the rocker shaft is connected with the rocker after passing through a through hole of the valve body 1, a shaft sleeve 7 is arranged in the through hole, and the shaft sleeve 7 and the valve body 1 are fixed by a pin 8. A spring 10 is arranged between the valve body 1 and the rocker, a sealing gasket 9 is arranged between the spring 10 and the valve body 1, the sealing gasket 9 is used for reducing the external leakage amount, the torsion of the spring 10 in the motion process of the four-bar mechanism 3 is reduced, the spring 10 can reduce the impact of the vibration in the private use of the valve on valve parts, and the service life of the valve is prolonged. The self-locking nut 11 can fasten the four-bar linkage 3 and the rocker shaft 5.
The blind hole shaft sleeve 6 and the shaft sleeve 7 are used for reducing the abrasion loss of the rocker shaft 5 and the valve body 1, are made of cobalt-based alloy materials, are lower in abrasion loss and are longer in service life.
The rocker shaft 5 is made of high-temperature alloy material to meet the high-temperature requirement of the exhaust valve.
The valve plate 4 is made of heat-resistant cast steel, and can meet the high-temperature requirement of the exhaust valve.
The air inlet and outlet valve adopting the structure has the overall dimension of 150mm of the valve drift diameter, the overall dimension of only 174 multiplied by 328 multiplied by 247mm and the volume of at least one half smaller than that of the prior product.
The motor 2 is directly assembled on the valve body 1, a motor support is omitted, the structure is simple, the weight is light, and the assembly process is simpler. The motor 2 is directly assembled on the valve body 1, the assembly processing reference is consistent, and no secondary assembly error exists, so that the installation position of the motor is easier to guarantee.
The motor 2 drives the valve plate 4 to be opened or closed through the four-bar linkage mechanism 3, the crank of the four-bar linkage mechanism 3 is assembled with the motor 2, the rocker is assembled with the valve plate 4, the torque of the motor 2 is transmitted to the valve plate 4, the four-bar linkage mechanism is optimized, a small motor can be used when the drift diameter of the valve plate is large, the valve is simple in structure and small in size, and the valve is easier to assemble on an engine. The rocker shaft 4 is assembled with the shaft sleeves 6 and 7 and is fixed with the rocker by the self-locking nut 8 after being pressed, the laser welding process of the original product is replaced, the assembly process is simple, the batch production is easier, and the deformation of the rocker arm and the rocker shaft caused by welding is reduced.
The rocker shaft 4 adopts a stepped shaft design, the stepped surface of the rocker shaft is matched with the shaft sleeve to replace the matching scheme of a common wear-resistant ring and the shaft sleeve, and one part is reduced. During assembly, the blind hole shaft sleeve 8 is assembled firstly, the rocker shaft 4 is assembled, the shaft sleeve 6, the rocker and the like are assembled finally, the self-locking nut is used for fixing after press mounting, the welding process of the original product is replaced, the assembly process is simple, and batch production is easier.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or replacements made by those skilled in the art within the scope of the present invention also belong to the protection scope of the present invention.
Claims (7)
1. The utility model provides a marine engine air intake and exhaust valve, includes the valve body, air inlet and gas vent, its characterized in that are established at the both ends of valve body: the air inlet and exhaust valve further comprises a driving part, the driving part comprises a motor, an output shaft of the motor is connected with a four-bar linkage mechanism, a rocker of the four-bar linkage mechanism is installed on a rocker shaft, and a valve plate is further connected onto the rocker shaft.
2. The intake/exhaust valve according to claim 1, wherein: one end of the rocker shaft is arranged in a blind hole shaft sleeve of the valve body, the other end of the rocker shaft is connected with the rocker after passing through a through hole of the valve body, a shaft sleeve is arranged in the through hole, and the shaft sleeve and the valve body are fixed by a pin.
3. The intake/exhaust valve according to claim 2, wherein: a spring is arranged between the valve body and the rocker, and a sealing gasket is arranged between the spring and the valve body.
4. The intake/exhaust valve according to claim 2, wherein: the blind hole shaft sleeve and the shaft sleeve are made of cobalt-based alloy materials.
5. The intake/exhaust valve according to claim 1, wherein: the rocker shaft is made of a high-temperature alloy material.
6. The intake/exhaust valve according to claim 1, wherein: the valve plate is made of heat-resistant cast steel.
7. The intake/exhaust valve according to claim 1, wherein: the motor is fixed on the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921167123.9U CN210239772U (en) | 2019-07-24 | 2019-07-24 | Air inlet and outlet valve of marine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921167123.9U CN210239772U (en) | 2019-07-24 | 2019-07-24 | Air inlet and outlet valve of marine engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210239772U true CN210239772U (en) | 2020-04-03 |
Family
ID=69992447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921167123.9U Active CN210239772U (en) | 2019-07-24 | 2019-07-24 | Air inlet and outlet valve of marine engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210239772U (en) |
-
2019
- 2019-07-24 CN CN201921167123.9U patent/CN210239772U/en active Active
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