CN218376687U - Valve delay opening mechanism - Google Patents
Valve delay opening mechanism Download PDFInfo
- Publication number
- CN218376687U CN218376687U CN202222511462.2U CN202222511462U CN218376687U CN 218376687 U CN218376687 U CN 218376687U CN 202222511462 U CN202222511462 U CN 202222511462U CN 218376687 U CN218376687 U CN 218376687U
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- valve
- shell
- buffer spring
- bridge
- mounting seat
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Abstract
The utility model relates to a valve delay opening mechanism, which comprises a shell, a valve bridge and an opening and closing unit, wherein the opening and closing unit is arranged on the shell and is driven by the valve bridge; the opening and closing unit comprises a buffer spring, a buffer spring mounting seat, a valve spring mounting seat, a valve seat ring, a valve locking clamp and a valve, wherein a conical end is formed at the lower end of the valve, extends to the inside of the shell and then is in movable fit with the communicating hole to open and close the communicating hole. The utility model has the advantages that: a space is reserved between the valve bridge and the valve head; when the novel valve bridge moves downwards, the valve bridge needs to travel by one section of idle stroke, and when the novel valve bridge contacts the head of the valve, the valve bridge can be driven to move downwards, so that the delayed opening effect of the small gas valve is realized, the operation is simple and convenient, and the structure is novel and reasonable.
Description
Technical Field
The utility model relates to a valve time delay opening mechanism belongs to the engine field.
Background
Along with the rapid development of national economy, the requirements of environmental protection, energy conservation and noise reduction of a gas engine on the development towards high power are higher and higher, the requirement on the rationality of gas intake is also increased increasingly, a new machine type with higher output power, more energy conservation and environmental protection, better reliability and more attractive appearance is developed, the gas intake is opened after an intake valve of the engine is opened and closed before the intake valve of the engine is closed, a valve delay opening mechanism must be designed to meet the requirements, the successful design of the valve delay opening mechanism lays a foundation for the development of a new high-power gas engine.
SUMMERY OF THE UTILITY MODEL
For overcoming the defects of the prior art, the utility model provides a valve time delay opening mechanism, the technical scheme of the utility model is:
a valve delay opening mechanism comprises a shell, a valve bridge and an opening and closing unit, wherein the opening and closing unit is mounted on the shell and driven by the valve bridge; the opening and closing unit comprises a buffer spring, a buffer spring mounting seat, a valve spring mounting seat, a valve seat ring, a valve locking clamp and a valve, wherein a conical end is formed at the lower end of the valve, extends into the shell and then is in movable fit with the communicating hole to open and close the communicating hole; the communicating hole is communicated with a middle gas channel and a gas inlet channel inside the shell; the upper end of the air valve is positioned outside the shell; the valve bridge, a buffer spring mounting seat, a valve spring mounting seat and a valve spring are sequentially sleeved on the valve from top to bottom, the upper end of the buffer spring is connected to the valve bridge, the lower end of the buffer spring is connected to the buffer spring mounting seat, and a space is formed between the valve bridge and the valve when the buffer spring is in a free state; the lower end of the valve spring is installed in the installation groove of the shell, the upper end of the valve spring is connected to the valve spring installation seat, and the valve is fixedly installed together with the buffer spring installation seat and the valve spring installation seat.
And the shell is provided with a valve guide pipe, and the valve penetrates through the valve guide pipe and is in sliding fit with the valve guide pipe.
A screw plug is arranged on the shell at one end of the middle gas channel, and the other end of the middle gas channel is bent and then communicated with a gas guide pipe; and a gas inlet is formed on the shell at one end of the gas inlet channel, and a blank cap is installed at the other end of the gas inlet channel.
And a valve seat ring is arranged at the communication hole, and when the valve seat ring is tightly combined with the conical end of the valve, the communication hole is in a closed state.
The utility model has the advantages that: a space is reserved between the valve bridge and the valve head; when the novel valve bridge moves downwards, the valve bridge needs to travel by one section of idle stroke, and when the novel valve bridge contacts the head of the valve, the valve bridge can be driven to move downwards, so that the effect of delaying opening of the small gas valve is realized.
Drawings
Fig. 1 is a schematic view of the main structure of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.
Fig. 4 is a top view of fig. 1.
Detailed Description
The invention will be further described with reference to specific embodiments, the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
Referring to fig. 1 to 4, the utility model relates to a valve delay opening mechanism, which comprises a shell 1, a valve bridge 6 and an opening and closing unit, wherein the opening and closing unit is arranged on the shell 1 and is driven by the valve bridge 6; the opening and closing unit comprises a buffer spring 2, a buffer spring mounting seat 3, a valve spring 5, a valve spring mounting seat 4, a valve seat ring 8, a valve locking clamp 9 and a valve 10, wherein the lower end of the valve 10 forms a conical end, and the conical end extends into the shell 1 and then is in movable fit with a communication hole to open and close the communication hole; the communicating hole communicates the middle gas channel 12 and the gas inlet channel 13 inside the casing; the upper end of the valve 10 is located outside the housing 1; a valve bridge 6, a buffer spring 2, a buffer spring mounting seat 3, a valve spring mounting seat 4 and a valve spring 5 are sequentially sleeved on the valve 10 from top to bottom, the upper end of the buffer spring 2 is connected to the valve bridge 6, the lower end of the buffer spring 2 is connected to the buffer spring mounting seat 3, and a space (a preset gap, when the valve bridge 6 moves up and down, a driving force is provided for the valve 10) is formed between the valve bridge 6 and the valve 10 when the buffer spring 2 is in a free state; the lower end of the valve spring 5 is arranged in the mounting groove of the shell 1, the upper end of the valve spring 5 is connected to the valve spring mounting seat 4, and the valve 10 is fixedly mounted with the buffer spring mounting seat 3 and the valve spring mounting seat 4 together.
A valve guide 11 is mounted on the housing 1, and the valve 10 passes through the valve guide 11 and is slidably fitted to the valve guide 11.
A screw plug 7 is arranged on the shell 1 at one end of the middle gas channel 12, and the other end of the middle gas channel is bent and then communicated with a gas guide pipe; a gas inlet is formed in the shell 1 at one end of the gas inlet channel 13, and a blank cap 14 is installed at the other end of the gas inlet channel.
A valve seat 8 is installed at the communication hole, and the communication hole is in a closed state when the valve seat 8 is tightly combined with the tapered end of the valve 10.
The utility model discloses a theory of operation is:
when novel valve bridge 6 downstream, need walk one section predetermined idle stroke (valve bridge and the interval between the valve), when valve bridge 6 contacted valve 10 head (upper end), just can drive valve 10 downstream, spiracular toper end downstream, the intercommunicating pore is in the open mode to realize the effect that valve 10 delayed opening. When the valve bridge 6 moves upward, i.e. is about to disengage from the head of the valve 10, the valve 10 closes the communication hole. After the gas small valve 10 is closed, the novel valve bridge 6 still needs to move upwards continuously until reaching the maximum lift, so that the effect of closing the gas valve 10 in advance is realized.
The head of the valve 10 is provided with a buffer spring mounting seat 3 and a buffer spring 2, and the buffer spring mounting seat and the buffer spring play a role in buffering the movement of the valve 10 and the valve bridge 6. The gas enters from a gas inlet channel 13 on the shell 1, enters into an intermediate gas channel 12 through the valve 10 when the valve 10 is opened, then enters into a gas guide pipe on the cylinder cover, and finally enters into the cylinder along with the gas inlet flow. When the valve 10 is closed, the gas supply is cut off, and a process plug 7 and a blank cap 14 are arranged on the intermediate gas channel 12.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (4)
1. The valve delay opening mechanism is characterized by comprising a shell, a valve bridge and an opening and closing unit, wherein the opening and closing unit is arranged on the shell and is driven by the valve bridge; the opening and closing unit comprises a buffer spring, a buffer spring mounting seat, a valve spring mounting seat, a valve seat ring, a valve locking clamp and a valve, wherein a conical end is formed at the lower end of the valve, extends into the shell and then is in movable fit with the communicating hole to open and close the communicating hole; the communicating hole is communicated with a middle gas channel and a gas inlet channel inside the shell; the upper end of the air valve is positioned outside the shell; the valve bridge, a buffer spring mounting seat, a valve spring mounting seat and a valve spring are sequentially sleeved on the valve from top to bottom, the upper end of the buffer spring is connected to the valve bridge, the lower end of the buffer spring is connected to the buffer spring mounting seat, and a space is formed between the valve bridge and the valve when the buffer spring is in a free state; the lower extreme of valve spring install in the mounting groove of casing, the upper end is connected the valve spring mount pad on, the valve with buffer spring mount pad and valve spring mount pad fixed mounting together.
2. A valve delay opening mechanism according to claim 1, wherein a valve guide is mounted on the housing, the valve passing through the valve guide and slidably engaging the valve guide.
3. The valve delay opening mechanism of claim 1, wherein a screw plug is mounted on the housing at one end of the intermediate gas passage, and the other end of the intermediate gas passage is bent and then communicated with a gas guide pipe; and a gas inlet is formed on the shell at one end of the gas inlet channel, and a blank cap is installed at the other end of the gas inlet channel.
4. A valve delay opening mechanism according to claim 2 or 3, wherein a valve seat is installed at the communication hole, and the communication hole is in a closed state when the valve seat is closely combined with the tapered end of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222511462.2U CN218376687U (en) | 2022-09-22 | 2022-09-22 | Valve delay opening mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222511462.2U CN218376687U (en) | 2022-09-22 | 2022-09-22 | Valve delay opening mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218376687U true CN218376687U (en) | 2023-01-24 |
Family
ID=84952779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222511462.2U Active CN218376687U (en) | 2022-09-22 | 2022-09-22 | Valve delay opening mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218376687U (en) |
-
2022
- 2022-09-22 CN CN202222511462.2U patent/CN218376687U/en active Active
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