Marine diesel engine exhaust valve

Abstract

The utility model discloses a marine diesel engine exhaust valve which comprises a valve body, the top of the valve body is fixedly connected with a valve cover through a bolt, the inner wall of the valve cover is fixedly connected with a first sealing ring, the inner wall of the first sealing ring is attached to a valve rod, and the bottom of the valve rod is fixedly connected with a piston. According to the exhaust valve of the marine diesel engine, the vertical plate, the first toothed plate, the gear, the second toothed plate and the spring are matched, so that the filter screen is installed, the filter screen is installed on the exhaust valve, particle impurities in waste gas are filtered out, and the exhaust gas is exhausted. The exhaust valve solves the problems that when an existing exhaust valve of the marine diesel engine is used, no filtering structure is arranged in the exhaust valve to filter waste gas, particle impurities in the waste gas are prevented from entering the exhaust valve, the impurities are prevented from being adhered to the inner wall of the exhaust valve, and the service life of the exhaust valve is prolonged. Therefore, the use effect of the exhaust valve of the existing marine diesel engine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, in particular to an exhaust valve for a marine diesel engine. Background Art

[0002] When the diesel engine is in normal working condition, the exhaust valve will open and close once during the process of each cylinder completing a working cycle. If the exhaust valve cannot be opened normally, the combustion exhaust gas in the diesel engine cylinder cannot be discharged in time, and clean air and fuel will still enter the cylinder for combustion for subsequent working cycles.

[0003] For example, a marine diesel engine exhaust valve with the authorization announcement number CN201696110U includes a valve body with a valve stem, and also includes a guide sleeve fixed in a through hole at the upper end of the valve body, wherein the valve stem slides in the guide sleeve, and the guide sleeve is sealed and connected to the valve body; although the above document can realize that when the exhaust valve has been working for a period of time and there is an excessive matching gap between the guide sleeve and the valve stem due to wear, there is no need to scrap the entire exhaust valve body, and only the guide sleeve needs to be replaced, thus saving replacement costs. Moreover, the marine diesel engine exhaust valve makes the exhaust valve work more reliable and avoids some safety hazards;

[0004] However, when the existing marine diesel engine exhaust valve is in use, the exhaust gas inside the diesel engine enters the exhaust valve through the air inlet inside the exhaust valve, and is then discharged through the exhaust port inside the exhaust valve. Since there is no filtering structure inside the exhaust valve to filter the exhaust gas and prevent particulate impurities inside the exhaust gas from entering the exhaust valve, the impurities adhere to the inner wall of the exhaust valve, causing the piston inside the exhaust valve to be unable to move normally, thereby reducing the use effect of the existing marine diesel engine exhaust valve. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an exhaust valve for a marine diesel engine, which solves the problem that when the existing exhaust valve for a marine diesel engine is in use, there is no filtering structure inside the exhaust valve to filter the exhaust gas, thereby preventing particulate impurities inside the exhaust gas from entering the exhaust valve, and the impurities adhere to the inner wall of the exhaust valve, causing the piston inside the exhaust valve to be unable to move normally, thereby reducing the use effect of the existing exhaust valve for a marine diesel engine.

[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a marine diesel engine exhaust valve, comprising a valve body, the top of the valve body is fixedly connected to a valve cover by bolts, the inner wall of the valve cover is fixedly connected to a first sealing ring, the inner wall of the first sealing ring is fitted with a valve stem, the bottom of the valve stem is fixedly connected to a piston, the valve stem extends to the outside of the valve cover, the bottom of the valve body is provided with an air inlet, one side of the valve body is provided with an exhaust port, the bottom of the valve body is provided with a filter screen, the outer walls of both sides of the valve body are fixedly connected to a box body, the interior of the box body is provided with a mounting mechanism, and the mounting mechanism includes a vertical A plate, a first tooth plate, a gear, a second tooth plate and a spring, an outer wall of one side of the vertical plate is fixedly connected with the first tooth plate, the outer wall of the first tooth plate passes through the box body, the outer wall of the first tooth plate is movably connected to the box body, the bottom outer wall of the first tooth plate away from the vertical plate is meshed with a gear, the inner wall of the gear is fixedly connected with a pin shaft, the inner wall of the box body is rotatably connected to the outer wall of the pin shaft, the bottom outer wall of the gear is meshed with a second tooth plate, the outer wall of the second tooth plate passes through the inner wall of the box body and the inner wall of the valve body respectively, the side of the second tooth plate away from the gear is inserted into the inner wall of the filter screen, and a spring is fixedly connected between the first tooth plate and the box body.

[0007] Preferably, the outer walls of the first tooth plate and the second tooth plate are respectively fixedly connected with sliders, the outer walls of the two sliders are slidably engaged with sliding grooves, and the two sliding grooves are both opened on the upper and lower inner walls of the box body.

[0008] Preferably, the outer wall of the filter screen is in contact with the bottom inner wall of the valve body.

[0009] Preferably, a second sealing ring is fixedly connected to the outer wall of the piston, and the outer wall of the second sealing ring is in contact with the inner wall of the valve body.

[0010] Preferably, the inner wall of the valve body is threadedly connected to a threaded rod, the inner wall of the valve cover is threadedly connected to the outer wall of the threaded rod, the top of the threaded rod is fixedly connected to a knob, and the bottom of the threaded rod is rotatably connected to a block via a bearing.

[0011] Preferably, the top outer wall of the blocking block is in contact with the inner wall of the valve body.

[0012] Beneficial Effects

[0013] The utility model provides a marine diesel engine exhaust valve. It has the following beneficial effects: the marine diesel engine exhaust valve realizes the installation of a filter screen through the cooperation between a vertical plate, a first tooth plate, a gear, a second tooth plate and a spring, and the filter screen is installed on the exhaust valve to filter particulate impurities in the exhaust gas, thereby solving the problem that when the existing marine diesel engine exhaust valve is in use, there is no filtering structure inside the exhaust valve to filter the exhaust gas, so as to prevent particulate impurities inside the exhaust gas from entering the exhaust valve, and the impurities are adhered to the inner wall of the exhaust valve, so that the piston inside the exhaust valve cannot move normally, thereby reducing the use effect of the existing marine diesel engine exhaust valve.

[0014] The size of the exhaust port is adjusted by the cooperation between the knob, the threaded rod and the blocking block, thereby adjusting the exhaust volume of the exhaust valve, thereby solving the problem that the exhaust volume of the existing marine diesel engine exhaust valve cannot be adjusted during use, thereby reducing the practicality of the existing marine diesel engine exhaust valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the valve body, filter screen and gear;

[0018] Figure 4 for Figure 1 Schematic diagram of the structure of the middle valve body, threaded rod and blocking block.

[0019] In the figure: 1, valve body, 2, valve cover, 3, first sealing ring, 4, valve stem, 5, piston, 6, second sealing ring, 7, air inlet, 8, exhaust port, 9, box body, 10, vertical plate, 11, first tooth plate, 12, gear, 13, second tooth plate, 14, spring, 15, slider, 16, slide groove, 17, filter screen, 18, threaded rod, 19, block, 20, knob. DETAILED DESCRIPTION

[0020] 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.

[0021] When the existing marine diesel engine exhaust valve is in use, there is no filtering structure inside the exhaust valve to filter the exhaust gas to prevent particulate impurities in the exhaust gas from entering the exhaust valve. The impurities adhere to the inner wall of the exhaust valve, causing the piston inside the exhaust valve to be unable to move normally, thereby reducing the use effect of the existing marine diesel engine exhaust valve.

[0022] In view of this, the utility model provides an exhaust valve for a marine diesel engine. The exhaust valve for a marine diesel engine realizes the installation of a filter screen through the cooperation between a vertical plate, a first tooth plate, a gear, a second tooth plate and a spring. The filter screen is installed on the exhaust valve to filter particulate impurities in the exhaust gas, thereby solving the problem that when the exhaust valve for a marine diesel engine is in use, there is no filtering structure inside the exhaust valve to filter the exhaust gas, thereby preventing particulate impurities inside the exhaust gas from entering the exhaust valve, and the impurities are adhered to the inner wall of the exhaust valve, resulting in the piston inside the exhaust valve being unable to move normally, thereby reducing the use effect of the existing exhaust valve for a marine diesel engine.

[0023] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0024] Embodiment 1, by Figure 1-3It can be seen that a marine diesel engine exhaust valve in this case includes a valve body 1, the top of the valve body 1 is fixedly connected with a valve cover 2 by bolts, the staff rotates the bolts to install the valve cover 2 on the valve body 1, and when the staff rotates the bolts in the opposite direction, the valve cover 2 can be removed, the inner wall of the valve cover 2 is fixedly connected with a first sealing ring 3, the first sealing ring 3 increases the sealing between the valve cover 2 and the valve stem 4, the inner wall of the first sealing ring 3 is fitted with a valve stem 4, the bottom of the valve stem 4 is fixedly connected with a piston 5, the valve stem 4 drives the piston 5 to move, the air inlet 7 and the exhaust port 8 are opened, and the marine diesel The oil engine is exhausted, the valve stem 4 extends to the outside of the valve cover 2, the bottom of the valve body 1 is provided with an air inlet 7, the exhaust gas inside the marine diesel engine enters the inside of the valve body 1 through the air inlet 7, the side of the valve body 1 is provided with an exhaust port 8, the exhaust gas inside the valve body 1 is discharged through the exhaust port 8, the bottom of the valve body 1 is provided with a filter screen 17, the filter screen 17 can filter the particulate impurities in the exhaust gas, the filter screen 17 is a heat-resistant glass fiber filter screen, which can withstand high temperature to filter particulate impurities, the outer walls on both sides of the valve body 1 are fixedly connected with a box body 9, and the inside of the box body 9 is provided with a mounting mechanism, the mounting mechanism It includes a vertical plate 10, a first tooth plate 11, a gear 12, a second tooth plate 13 and a spring 14. The first tooth plate 11 is fixedly connected to the outer wall of one side of the vertical plate 10. The vertical plate 10 drives the first tooth plate 11 to move. The outer wall of the first tooth plate 11 passes through the box body 9. The first tooth plate 11 slides in the box body 9. The outer wall of the first tooth plate 11 is movably connected to the box body 9. The bottom outer wall of the first tooth plate 11 away from the vertical plate 10 is meshed with a gear 12. The first tooth plate 11 drives the gear 12 to rotate. The inner wall of the gear 12 is fixedly connected with a pin shaft. The gear 12 drives the pin shaft to rotate, and the inner wall of the box body 9 rotates The outer wall of the pin shaft is connected, and the bottom outer wall of the gear 12 is meshed with a second tooth plate 13. The gear 12 drives the second tooth plate 13 to move. The outer walls of the second tooth plate 13 penetrate the inner wall of the box body 9 and the inner wall of the valve body 1 respectively. The second tooth plate 13 moves in the box body 9 and the valve body 1. The side of the second tooth plate 13 away from the gear 12 is plugged into the inner wall of the filter screen 17. The second tooth plate 13 is inserted into the filter screen 17. A spring 14 is fixedly connected between the first tooth plate 11 and the box body 9. The material of the spring 14 is carbon spring steel. The elastic coefficient of the spring 14 is selected according to actual needs to meet the work.

[0025] In the specific implementation process, it is worth pointing out that the staff rotates the bolts to install the valve cover 2 on the valve body 1. When the staff rotates the bolts in the opposite direction, the valve cover 2 can be removed. When the exhaust valve is working, the valve stem 4 drives the piston 5 to move, and the air inlet 7 and the exhaust port 8 are opened. The exhaust gas inside the marine diesel engine enters the interior of the valve body 1 through the air inlet 7, and the exhaust gas inside the valve body 1 is discharged through the exhaust port 8 to exhaust the marine diesel engine. The filter 17 can filter the particulate impurities in the exhaust gas. The filter 17 is a heat-resistant glass The fiber filter can withstand high temperatures to filter particulate impurities. The vertical plate 10 drives the first tooth plate 11 to move. The first tooth plate 11 slides in the box body 9. The first tooth plate 11 drives the gear 12 to rotate. The gear 12 drives the pin to rotate. The gear 12 drives the second tooth plate 13 to move. The second tooth plate 13 moves in the box body 9 and the valve body 1. The second tooth plate 13 is inserted into the filter screen 17. The material of the spring 14 is carbon spring steel. The elastic coefficient of the spring 14 is selected according to actual needs. It can meet the work requirements to achieve the installation of the filter screen 17 and filter the particulate impurities in the exhaust gas.

[0026] The specific shape and specification of the valve body 1, as well as the specific shape and connection method of its bottom connector, are designed according to actual needs to achieve connection to the exhaust end of the diesel engine on the hull. This embodiment only provides schematic drawings;

[0027] Furthermore, the outer walls of the first tooth plate 11 and the second tooth plate 13 are respectively fixedly connected with sliders 15, and the first tooth plate 11 and the second tooth plate 13 drive the sliders 15 to move, and the outer walls of the two sliders 15 are slidably engaged with slide grooves 16, and the two sliders 15 slide in the slide grooves 16, and the two slide grooves 16 are both provided on the upper and lower inner walls of the box body 9;

[0028] In the specific implementation process, it is worth pointing out that the first tooth plate 11 and the second tooth plate 13 drive the slider 15 to move, and the two sliders 15 slide in the slide groove 16, and the slider 15 and the slide groove 16 guide the first tooth plate 11 and the second tooth plate 13;

[0029] Furthermore, the outer wall of the filter 17 is attached to the inner wall of the bottom of the valve body 1, and the filter 17 is placed into the bottom of the valve body 1 so that the outer wall of the filter 17 is in contact with the inner wall of the bottom of the valve body 1;

[0030] In the specific implementation process, the filter 17 is placed into the bottom of the valve body 1 so that the outer wall of the filter 17 contacts the inner wall of the bottom of the valve body 1 to filter the particulate impurities in the exhaust gas;

[0031] Furthermore, the outer wall of the piston 5 is fixedly connected with a second sealing ring 6, the second sealing ring 6 increases the sealing between the piston 5 and the valve body 1, and the outer wall of the second sealing ring 6 is in contact with the inner wall of the valve body 1;

[0032] In the specific implementation process, the second sealing ring 6 increases the sealing between the piston 5 and the valve body 1, thereby improving the sealing of the piston 5;

[0033] Specifically, first, the staff pulls down the vertical plates 10 on both sides, and the vertical plates 10 drive the first tooth plate 11 to move. The first tooth plate 11 slides in the box body 9, and the first tooth plate 11 stretches the spring 14. The first tooth plate 11 drives the gear 12 to rotate, and the gear 12 drives the pin to rotate. The gear 12 drives the second tooth plate 13 to move, and the second tooth plate 13 moves in the box body 9 and the valve body 1. The end of the second tooth plate 13 moves to the inside of the valve body 1. At this time, another staff member puts the filter screen 17 into the bottom of the valve body 1 so that the outer wall of the filter screen 17 contacts the inner wall of the bottom of the valve body 1. After completion, the staff Loosen the vertical plate 10, the spring 14 rebounds, thereby driving the second tooth plate 13 to move, the first tooth plate 11 and the second tooth plate 13 drive the slider 15 to move, the two sliders 15 slide in the slide groove 16, insert the second tooth plate 13 into the inside of the filter screen 17, fix the filter screen 17, and filter the particulate impurities in the exhaust gas. When the exhaust valve is working, the valve stem 4 drives the piston 5 to move, open the air inlet 7 and the exhaust port 8, and the exhaust gas inside the marine diesel engine enters the inside of the valve body 1 through the air inlet 7, and the exhaust gas inside the valve body 1 is discharged through the exhaust port 8 to exhaust the marine diesel engine.

[0034] Embodiment 2, by Figure 1 and 4 It can be seen that the inner wall of the valve body 1 is threadedly connected with a threaded rod 18, the inner wall of the valve cover 2 is threadedly connected to the outer wall of the threaded rod 18, the top of the threaded rod 18 is fixedly connected with a knob 20, the knob 20 drives the threaded rod 18 to rotate, the bottom of the threaded rod 18 is rotatably connected with a block 19 through a bearing, the threaded rod 18 drives the block 19 to move, and the shape of the block 19 is T-shaped;

[0035] In the specific implementation process, it is worth pointing out that the knob 20 drives the threaded rod 18 to rotate, and the threaded rod 18 drives the block 19 to move. The block 19 is T-shaped, and the block 19 is moved to adjust the size of the exhaust port 8.

[0036] Furthermore, the top outer wall of the block 19 is attached to the inner wall of the valve body 1, and the block 19 moves on the inner wall of the valve body 1;

[0037] In the specific implementation process, it is worth pointing out that the block 19 moves on the inner wall of the valve body 1 to limit the block 19;

[0038] Specifically, when adjusting the exhaust volume of the exhaust port 8, the staff turns the knob 20, the knob 20 drives the threaded rod 18 to rotate, the threaded rod 18 drives the block 19 to move, the block 19 drops, and the block 19 moves on the inner wall of the valve body 1 to reduce the exhaust port 8. After completion, the staff stops turning the knob 20. When the staff turns the knob 20 in the opposite direction, the block 19 rises and the exhaust port becomes larger to adjust the size of the exhaust port 8.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0040] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marine diesel engine exhaust valve, comprising a valve body (1), characterized in that: The top of the valve body (1) is fixedly connected to a valve cover (2) by bolts, the inner wall of the valve cover (2) is fixedly connected to a first sealing ring (3), the inner wall of the first sealing ring (3) is fitted with a valve stem (4), the bottom of the valve stem (4) is fixedly connected to a piston (5), the valve stem (4) extends to the outside of the valve cover (2), the bottom of the valve body (1) is provided with an air inlet (7), one side of the valve body (1) is provided with an exhaust port (8), the bottom of the valve body (1) is provided with a filter screen (17), the outer walls on both sides of the valve body (1) are fixedly connected to a box body (9), and a mounting mechanism is provided inside the box body (9); The mounting mechanism comprises a vertical plate (10), a first tooth plate (11), a gear (12), a second tooth plate (13) and a spring (14); A first tooth plate (11) is fixedly connected to an outer wall of one side of the vertical plate (10); the outer wall of the first tooth plate (11) passes through the box body (9); the outer wall of the first tooth plate (11) is movably connected to the box body (9); a gear (12) is meshed with an outer wall of the bottom of the first tooth plate (11) away from the vertical plate (10); a pin is fixedly connected to the inner wall of the gear (12); the inner wall of the box body (9) is rotatably connected to the outer wall of the pin; a second tooth plate (13) is meshed with an outer wall of the bottom of the gear (12); the outer wall of the second tooth plate (13) passes through the inner wall of the box body (9) and the inner wall of the valve body (1) respectively; a side of the second tooth plate (13) away from the gear (12) is plugged into the inner wall of the filter screen (17); a spring (14) is fixedly connected between the first tooth plate (11) and the box body (9).

2. A marine diesel engine exhaust valve according to claim 1, characterized in that: The outer walls of the first tooth plate (11) and the second tooth plate (13) are respectively fixedly connected with sliders (15), and the outer walls of the two sliders (15) are slidably engaged with slide grooves (16), and the two slide grooves (16) are both opened on the upper and lower inner walls of the box body (9).

3. The marine diesel engine exhaust valve according to claim 1, characterized in that: The outer wall of the filter screen (17) is in contact with the bottom inner wall of the valve body (1).

4. The marine diesel engine exhaust valve according to claim 1, characterized in that: The outer wall of the piston (5) is fixedly connected to a second sealing ring (6), and the outer wall of the second sealing ring (6) is in contact with the inner wall of the valve body (1).

5. The marine diesel engine exhaust valve according to claim 1, characterized in that: The inner wall of the valve body (1) is threadedly connected to a threaded rod (18), the inner wall of the valve cover (2) is threadedly connected to the outer wall of the threaded rod (18), the top of the threaded rod (18) is fixedly connected to a knob (20), and the bottom of the threaded rod (18) is rotatably connected to a blocking block (19) via a bearing.

6. A marine diesel engine exhaust valve according to claim 5, characterized in that: The top outer wall of the blocking block (19) is in contact with the inner wall of the valve body (1).

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