CN203335163U - Valve guide pipe, sealing part and internal combustion engine - Google Patents
Valve guide pipe, sealing part and internal combustion engine Download PDFInfo
- Publication number
- CN203335163U CN203335163U CN2013201848589U CN201320184858U CN203335163U CN 203335163 U CN203335163 U CN 203335163U CN 2013201848589 U CN2013201848589 U CN 2013201848589U CN 201320184858 U CN201320184858 U CN 201320184858U CN 203335163 U CN203335163 U CN 203335163U
- Authority
- CN
- China
- Prior art keywords
- combustion engine
- valve guide
- guide bushing
- internal
- department
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model discloses a valve guide pipe which is used for an internal combustion engine. The valve guide pipe comprises a guide pipe body and a sealing part. The first end of the guide pipe body is provided with a concave seam allowance in the circumferential direction, the sealing part comprises a sealing sleeve and a protection ring, and the sealing sleeve comprises an installation portion matched with the first end and a tightening sealing portion used for being attached to a valve rod of the internal combustion engine. The overall sealing sleeve is arranged at the concave seam allowance through the installation portion, the protection ring is arranged outside the installation portion in a sleeved mode, and the installation portion is fixedly connected with the tightening sealing portion. The valve guide pipe can prevent engine oil on a cylinder cover from entering an exhaust channel, and oil leakage at the joint of an exhaust manifold and a booster in the internal combustion engine which operates under the work condition of low rotation speed and low loading can be avoided. The utility model further discloses the internal combustion engine which uses the valve guide pipe, and the oil leakage of the internal combustion engine under the work condition of low loading and low rotation speed can not happen.
Description
Technical field
The utility model relates to technical field of internal combustion engines, more particularly, relates to a kind of valve guide bushing, and a kind of Sealing for valve guide bushing also relates to a kind of internal-combustion engine.
Background technique
Internal-combustion engine is heat energy to be converted into to a kind of heat engine of mechanical energy, refer to Fig. 1-Fig. 2, during internal combustion engine operation, bent axle rotates by gear driven camshaft 5, intake cam on camshaft 5 and exhaust cam rotate according to certain phase difference, and the driven member 4 and the push rod 3 that promote separately respectively move upward, and then exhaust rocker arm 2 and intake rocker are subject to respectively the impetus of corresponding push rod 3 and swing, the end of exhaust rocker arm 2 and intake rocker moves downward to pressing down pressing plate 1 and overcoming the power of valve spring 7 and promote valve 6, thereby open the waste gas that exhaust valve is got rid of firing chamber, opening intake valve makes air enter firing chamber so that air and the fuel oil mixed combustion acting sprayed into again.In above-mentioned internal-combustion engine, valve is by the support force at valve guide bushing 9, valve packing ring 10, spring 7 and the spring seat of honour, and the pressure of pressing plate keeps pumping of certain rule, and wherein, valve guide bushing 9 is made by powder metallurgy, and its internal surface is smooth.
In practical application, internal-combustion engine often need be under the operating mode of low running speed, low load long-play, in 2 internal-combustion engines that arrange on track vehicle, one drives loaded work piece as active force, another only drives fan running as guest machine, and the work duration of above-mentioned guest machine reaches 8 hours usually.Internal-combustion engine is when low speed, low load operation, exhaust pressure in air outlet flue and the suction pressure of intake duct are all lower, on cylinder cap 8, the air resistance of machine oil is little, after long-play, said engine oil can flow into cylinder cap 8 air outlet flues by the matching gap between valve guide bushing and valve under the self gravitation effect, and be deflated and take in gas exhaust manifold, cause the junction of gas exhaust manifold and pressurized machine that the oil impregnate phenomenon occurs.
In sum, how a kind of valve guide bushing is provided, its cylinder cap machine oil enters air outlet flue when avoiding internal-combustion engine to work long hours under the operating mode of low degree of turning, low load, and then to avoid the junction generation oil impregnate of gas exhaust manifold and pressurized machine be those skilled in the art's problem demanding prompt solutions.
The model utility content
In view of this, the utility model provides a kind of valve guide bushing, and its first end is provided with Sealing, can avoid long playing internal-combustion engine under the slow-speed of revolution, low load behavior the oil impregnate phenomenon to occur.The utility model also provides a kind of Sealing for valve guide bushing, can prevent that machine oil on cylinder cap from entering air outlet flue by the gap of catheter main body and valve stem.The utility model also provides a kind of internal-combustion engine of applying above-mentioned valve guide bushing, and it the oil impregnate phenomenon can not occur during long-play under the operating mode of the slow-speed of revolution, low load.
For achieving the above object, the utility model provides following technological scheme:
A kind of valve guide bushing, for internal-combustion engine, comprising:
Catheter main body, its first end is provided with circumferential recessed seam; With
Sealing with stuffing box gland and guard ring, described stuffing box gland comprises the assembly department that coordinates with described first end and for the sealed department that tightens up of the valve stem that is adjacent to described internal-combustion engine; Described stuffing box gland is fastened on described recessed stop portion by described assembly department; Described guard ring is sleeved on outside described assembly department; Described assembly department is fixedly connected with the described sealed department that tightens up.
Preferably, in above-mentioned valve guide bushing, also comprise the retaining ring for the described internal diameter that tightens up sealed department is remained unchanged, it is sheathed and be fixed on described tightening up outside sealed department.
Preferably, in above-mentioned valve guide bushing, the described opening that tightens up sealed department is the lip shape, and described guard ring is fastened on described lip shape place.
Preferably, in above-mentioned valve guide bushing, described assembly department and the described sealed department that tightens up are the integral type structure.
A kind of Sealing, for valve guide bushing, comprising:
Stuffing box gland, described stuffing box gland has the first end assembly department coordinated and the sealed department that tightens up be fixedly connected with described assembly department that is provided with recessed seam with described valve guide bushing, and described stuffing box gland is fastened on described recessed stop portion by described assembly department; With
Guard ring, described guard ring is sleeved on outside described assembly department.
Preferably, in above-mentioned Sealing, also comprise the retaining ring for the described internal diameter that tightens up sealed department is remained unchanged, it is sheathed and be fixed on described tightening up outside sealed department.
Preferably, in above-mentioned Sealing, described stuffing box gland is the fluorine rubber stuffing box gland.
Preferably, in above-mentioned Sealing, described valve guide bushing is the described valve guide bushing of any one in technique scheme.
Preferably, in above-mentioned internal-combustion engine, described first end is near pressing plate.
Preferably, in above-mentioned internal-combustion engine, the 0.3%-0.7% that the fit up gap of the valve stem of described catheter main body and described internal-combustion engine is described catheter main body internal diameter.
The utility model provides a kind of valve guide bushing, and it comprises catheter main body and Sealing for internal-combustion engine, and wherein, the first end of catheter main body is provided with circumferential recessed seam; Sealing has stuffing box gland and guard ring; Stuffing box gland comprises the assembly department that coordinates with first end and, for the sealed department that tightens up of the valve stem that is adjacent to internal-combustion engine, whole stuffing box gland is fastened on above-mentioned recessed stop portion by assembly department; Guard ring is sleeved on outside assembly department; Assembly department with tighten up sealed department and be fixedly connected with.
During application, catheter main body is assemblied on the valve stem of internal-combustion engine, tighten up sealed department be adjacent to Sealing and with valve stem generation relative sliding, be close to valve stem owing to tightening up sealed department, played the effect of the fit up gap between closes ducts main body and valve stem, can avoid internal-combustion engine under the industrial and mineral of the slow-speed of revolution, low load during long-play the machine oil on cylinder cap by the fit up gap between catheter main body and valve stem, prevent that said engine oil from entering air outlet flue, avoid machine oil to be deflated and bring gas exhaust manifold into, prevent that the junction of gas exhaust manifold and pressurized machine from oil impregnate occurring.To sum up, the valve guide bushing that the utility model provides can prevent that the machine oil on cylinder cap from entering exhaust passage, can avoid under the slow-speed of revolution, low load behavior the junction generation oil impregnate of gas exhaust manifold and pressurized machine in long playing internal-combustion engine.
The utility model also provides a kind of Sealing for valve guide bushing, its can the occlusion catheter main body and the valve stem of internal-combustion engine between fit up gap, avoid the machine oil on cylinder cap to enter exhaust passage when exhaust resistance is not enough.
The utility model also provides a kind of internal-combustion engine, and it has applied valve guide bushing of the present utility model, and under the operating mode of the slow-speed of revolution, low load, during long-play, on it, the junction of gas exhaust manifold and pressurized machine the oil impregnate situation can not occur.
The accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation that Fig. 1 is internal-combustion engine in prior art;
The partial enlarged drawing that Fig. 2 is Fig. 1;
The main TV structure schematic diagram of the catheter main body that Fig. 3 provides for the utility model embodiment;
The enlarged view that Fig. 4 is A part in Fig. 3;
The left TV structure schematic diagram that Fig. 5 is catheter main body in Fig. 3;
The structural representation of the Sealing that Fig. 6 provides for the utility model embodiment;
The sectional view of the Sealing that Fig. 7 provides for the utility model embodiment;
The valve guide bushing that Fig. 8 provides for the utility model embodiment and the erection drawing of internal-combustion engine;
Wherein, in Fig. 3-Fig. 8:
Catheter main body 100; Recessed seam 101; Sealing 200; Guard ring 201; Retaining ring 202; Stuffing box gland 203; Assembly department 231; Tighten up sealed department 232; Cylinder cap 301.
Embodiment
The utility model embodiment discloses a kind of valve guide bushing, and its first end is provided with Sealing, can avoid long playing internal-combustion engine under the slow-speed of revolution, low load behavior the oil impregnate phenomenon to occur.The utility model embodiment also discloses a kind of Sealing for valve guide bushing, can prevent that machine oil on cylinder cap from entering air outlet flue by the matching gap of catheter main body and valve stem.The utility model embodiment also discloses a kind of internal-combustion engine of applying above-mentioned valve guide bushing, and it the oil impregnate phenomenon can not occur during long-play under the operating mode of the slow-speed of revolution, low load.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiments.Embodiment based in the utility model, those of ordinary skills are not making under the creative work prerequisite the every other embodiment who obtains, and all belong to the scope of the utility model protection.
Refer to Fig. 3-Fig. 8, the valve guide bushing that the utility model embodiment provides is for internal-combustion engine, and it comprises catheter main body 100 and Sealing 200, and wherein, the first end of catheter main body 100 is provided with circumferential recessed seam 101; Sealing 200 has stuffing box gland 203 and guard ring 201; Stuffing box gland 203 comprise the assembly department 231 that coordinates with first end and for the valve stem that is adjacent to internal-combustion engine tighten up sealed department 232, whole stuffing box gland 203 is fastened on above-mentioned recessed seam 101 places by assembly department 231; Guard ring 201 is sleeved on outside assembly department 231; Assembly department 231 with tighten up sealed department 232 and be fixedly connected with.
During application, catheter main body 100 is assemblied on the valve stem of internal-combustion engine, tighten up sealed department 232 be adjacent to Sealing 200 and with valve stem generation relative sliding, owing to tightening up sealed department 232, be close to all the time on valve stem, played the effect of the fit up gap between closes ducts main body 100 and valve stem, can avoid internal-combustion engine in the slow-speed of revolution, under the industrial and mineral of low load during long-play the machine oil on cylinder cap 301 by above-mentioned fit up gap, prevent that machine oil from entering air outlet flue, avoid machine oil to be deflated and bring gas exhaust manifold into, oil impregnate occurs in the junction that prevents gas exhaust manifold and pressurized machine.To sum up, the valve guide bushing that the utility model embodiment provides can prevent that the machine oil on cylinder cap 301 from entering exhaust passage, can avoid under the slow-speed of revolution, low load behavior the junction generation oil impregnate of gas exhaust manifold and pressurized machine in long playing internal-combustion engine.
In addition, in above-mentioned valve guide bushing, guard ring 201 is sleeved on outside assembly department 231, can protect assembly department 231, and can prevent that assembly department 231 from being pullled and deviating from outside recessed seam 101 with the valve stem friction because tightening up sealed department 232.
Concrete, in above-mentioned valve guide bushing, assembly department 231 inside are shoulder hole, wherein, the diameter minimum of the shoulder hole level corresponding with recessed seam 101, so that assembly department 231 can be installed on recessed seam 101 places; Whole assembly department 231 closely is wrapped on first end.
Further, become large for fear of the internal diameter that tightens up sealed department 232 because of frictional force or aging etc., in the valve guide bushing that the present embodiment provides, also comprise the retaining ring 202 that the internal diameter for making to tighten up sealed department 232 remains unchanged, it is sheathed and be fixed on and tighten up outside sealed department 232.
Further, the above-mentioned opening that tightens up sealed department 232 is the lip shape, and the mode that retaining ring 202 is established by card is fixed on above-mentioned tightening up outside sealed department 232.
Concrete, in the valve guide bushing that above-described embodiment provides, assembly department 231 is the integral type structure with tightening up sealed department 232.The internal surface of catheter main body 100 is smooth, and the scope of the roughness of internal surface is 1.5-1.7, preferably is set to 1.6; This catheter main body 100 is specially the powder metallurgy conduit.
In above-mentioned valve guide bushing, the guard ring that guard ring 201 is made for the ST12 steel, stuffing box gland 203 is the fluorine rubber stuffing box gland, retaining ring 202 is become by the carbon steel wire tray.
The utility model embodiment also provides a kind of Sealing for valve guide bushing 200, and it comprises stuffing box gland 203 and guard ring 201; Stuffing box gland 203 comprise with the catheter main body 100 of valve guide bushing be provided with assembly department 231 that the first end of recessed seam 101 coordinates with assembly department 231, be fixedly connected with tighten up sealed department 232, whole stuffing box gland 203 is fastened on recessed seam 101 places by assembly department 231; Guard ring 201 is sleeved on outside assembly department 231.
Concrete, in above-mentioned Sealing 200, also comprise the retaining ring 202 for the described internal diameter that tightens up sealed department 232 is remained unchanged, it is sheathed and be fixed on and tighten up outside sealed department 232.The above-mentioned free end that tightens up sealed department 232 is the lip shape, and the mode that retaining ring 202 is established by card is fixed on tightens up outside sealed department 232.
Sealing 200 in the valve guide bushing that the Sealing 200 that the utility model embodiment provides provides with above-described embodiment is identical, can prevent that machine oil on cylinder cap 301 from entering air outlet flue by catheter main body 100 and the matching gap of valve stem, be beneficial to when internal-combustion engine is avoided under the operating mode of the slow-speed of revolution, low load long-play the oil impregnate phenomenon occurs.
The utility model embodiment also provides a kind of internal-combustion engine, and it comprises valve guide bushing, and the valve guide bushing that provides for above-described embodiment of this valve guide bushing.
Concrete, in above-mentioned internal-combustion engine, the first end of catheter main body 100 is near pressing plate, and the other end is near piston.
In above-mentioned internal-combustion engine, the 0.3%-0.7% that the fit up gap of the valve stem of catheter main body 100 and internal-combustion engine is catheter main body 100 internal diameters.
The internal combustion engine use that the present embodiment provides the valve guide bushing that provides of above-described embodiment, under low load, slow-revving operating mode, during long-play, on it, the oil impregnate phenomenon can not occur in the junction of gas exhaust manifold and pressurized machine.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and other embodiments' difference that between each embodiment, identical similar part is mutually referring to getting final product.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.Multiple modification to these embodiments will be apparent for those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from spirit or scope of the present utility model, realization in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a valve guide bushing, for internal-combustion engine, is characterized in that, comprising:
Catheter main body, its first end is provided with circumferential recessed seam; With
Sealing with stuffing box gland and guard ring, described stuffing box gland comprises the assembly department that coordinates with described first end and for the sealed department that tightens up of the valve stem that is adjacent to described internal-combustion engine; Described stuffing box gland is fastened on described recessed stop portion by described assembly department; Described guard ring is sleeved on outside described assembly department; Described assembly department is fixedly connected with the described sealed department that tightens up.
2. valve guide bushing according to claim 1, is characterized in that, also comprises the retaining ring for the described internal diameter that tightens up sealed department is remained unchanged, and it is sheathed and be fixed on described tightening up outside sealed department.
3. valve guide bushing according to claim 2, is characterized in that, the described opening that tightens up sealed department is the lip shape, and described guard ring is fastened on described lip shape place.
4. valve guide bushing according to claim 1, is characterized in that, described assembly department and the described sealed department that tightens up are the integral type structure.
5. a Sealing, for valve guide bushing, is characterized in that, comprising:
Stuffing box gland, described stuffing box gland has the first end assembly department coordinated and the sealed department that tightens up be fixedly connected with described assembly department that is provided with recessed seam with described valve guide bushing, and described stuffing box gland is fastened on described recessed stop portion by described assembly department; With
Guard ring, described guard ring is sleeved on outside described assembly department.
6. Sealing according to claim 5, is characterized in that, also comprises the retaining ring for the described internal diameter that tightens up sealed department is remained unchanged, and it is sheathed and be fixed on described tightening up outside sealed department.
7. according to the described Sealing of claim 5 or 6, it is characterized in that, described stuffing box gland is the fluorine rubber stuffing box gland.
8. an internal-combustion engine, comprise valve guide bushing, it is characterized in that, described valve guide bushing is the described valve guide bushing of claim 1-4 any one.
9. internal-combustion engine according to claim 8, is characterized in that, described first end is near pressing plate.
10. internal-combustion engine according to claim 8, is characterized in that, the 0.3%-0.7% that the fit up gap of the valve stem of described catheter main body and described internal-combustion engine is described catheter main body internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201848589U CN203335163U (en) | 2013-04-12 | 2013-04-12 | Valve guide pipe, sealing part and internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201848589U CN203335163U (en) | 2013-04-12 | 2013-04-12 | Valve guide pipe, sealing part and internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335163U true CN203335163U (en) | 2013-12-11 |
Family
ID=49703840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201848589U Expired - Lifetime CN203335163U (en) | 2013-04-12 | 2013-04-12 | Valve guide pipe, sealing part and internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335163U (en) |
-
2013
- 2013-04-12 CN CN2013201848589U patent/CN203335163U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016072391A1 (en) | Uniflow-scavenged two-cycle engine | |
| CN102425520A (en) | Embedded oil charging structure for high-pressure fuel oil system | |
| CN203335163U (en) | Valve guide pipe, sealing part and internal combustion engine | |
| CN102587989A (en) | Aerodynamic engine assembly | |
| US20200362771A1 (en) | Valve | |
| CN203175639U (en) | Valve guide pipe and internal combustion engine | |
| CN201705491U (en) | Piston ring structure | |
| CN202628304U (en) | Combined wear resistant piston ring | |
| CN201152180Y (en) | Air valve oil seal lip | |
| CN204402660U (en) | The petrol engine that a kind of compact structure performance is superior | |
| CN207195033U (en) | A kind of piston engine | |
| CN206845433U (en) | A kind of urea pump pumping diaphragm | |
| CN201144738Y (en) | Piston and piston ring assembly | |
| CN206268439U (en) | Combination sealing pad | |
| CN202628307U (en) | Combined piston ring | |
| CN208967265U (en) | A kind of noise-reduction type turbine pressurized hose | |
| CN203584592U (en) | Cylinder cover with variable compression ratio | |
| CN202467960U (en) | Aerodynamic mechanical linkage air distributing device | |
| CN202441885U (en) | Sealing device for compressor end of turbocharger | |
| CN204402606U (en) | A kind of load-carrying natural gas used for automobile valve oil seal | |
| CN102966433A (en) | Opposed internal-combustion engine system with guide balls | |
| CN218267234U (en) | Composite seal lip valve oil seal | |
| CN2771493Y (en) | Piston ring overlap piston | |
| CN102644509A (en) | Efficient air cylinder piston power system | |
| CN107762702A (en) | A kind of air distributor, diesel engine comperssed air starting device and large-scale diesel engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |