CN214887433U - Gap type forced lubricating oil inlet screw seat of fuel injection pump - Google Patents
Gap type forced lubricating oil inlet screw seat of fuel injection pump Download PDFInfo
- Publication number
- CN214887433U CN214887433U CN202121336340.3U CN202121336340U CN214887433U CN 214887433 U CN214887433 U CN 214887433U CN 202121336340 U CN202121336340 U CN 202121336340U CN 214887433 U CN214887433 U CN 214887433U
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- China
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- oil inlet
- oil
- screw seat
- oil feed
- pump
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- Expired - Fee Related
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Abstract
The utility model discloses a fuel injection pump slit formula force-feed oil screw seat, which comprises a pump body, be equipped with the pump chamber in the pump body, be equipped with the camshaft in the pump chamber, the position that the pump body is close to pump chamber bottom is equipped with the oil feed through-hole, be equipped with the oil feed screw in the oil feed screw seat, be equipped with the oil feed pipe between oil feed screw and the oil feed screw seat, be equipped with the oil feed passageway in the oil feed screw, the oil feed passageway includes side opening passageway and straight hole passageway, the oil feed screw seat includes installation cavity and oil feed chamber, be equipped with heavy platform between installation cavity and the oil feed chamber, the one end annular array that heavy platform was kept away from to the oil feed chamber has the riveting point, be equipped with the steel ball in the oil feed chamber, the diameter of steel ball is less than the diameter of oil feed chamber and is greater than the internal diameter of heavy platform. The utility model discloses improve former hole formula for the slot formula, the circulation cross-section can show under the close condition of cross sectional area that overflows increase wet week, reduces the flow to reach the purpose that reduces the oil level height in the pump chamber, and because wet week is longer, be difficult for blockking up by individual debris, the good reliability.
Description
Technical Field
The utility model belongs to injection pump spare part field, concretely relates to injection pump gap formula force-feed oil feed screw seat.
Background
Generally, when a diesel engine fuel injection pump adopts a forced lubrication mode, diesel engine lubricating oil is introduced into a pump cavity from a gap between a pump body lead hole and a roller body for lubrication, and the lubricating oil inlet mode is shown in a schematic diagram I. The structure is characterized in that the lead hole 101 of the pump body 10 is generally long, the lubricating oil inlet screw seat 14 is spatially arranged near the lead hole 101, and the lubricating oil inlet screw 15 has an assembling and disassembling space. The technical route of the forced lubrication mode is mature, the oil level of the lubricating oil in the pump cavity is easy to control, and the lubricating oil is generally in a reasonable area near the center height of the camshaft.
With the change of user requirements and the widening of market application range, part of partial series of oil injection pumps, such as I series and JI series, which are originally mainly used for splash lubrication (also called self-lubrication and oil injection pump independently filling lubricating oil) occasions in our company are also changed into forced lubrication. Since the lead hole of the pump body of the injection pump is short and the lubricating oil inlet screw base has no space arranged near the lead hole, a scheme similar to the scheme shown in the figure I and using a gap between the lead hole 101 and the roller body 102 cannot be adopted. The oil inlet and return mode of the lubricating oil is shown in a schematic diagram II. The lubricating mode is to introduce the diesel engine lubricating oil into the pump cavity from the small oil inlet hole 103 (see the schematic diagram III) of the lubricating oil inlet screw seat for lubrication, and the lubricating oil return oil flows back to the diesel engine through the gap between the rollers of the tapered roller bearing 121 at the driving end of the camshaft like most oil pumps. This force-feed lubrication mode discovery in the use, the oil level height of lubricating oil in the pump chamber is wayward, and is generally higher, brings the risk such as oil pump temperature height, speed regulator part motion resistance increase, oil leak. If the oil inlet flow is reduced to reduce the height of the oil surface by simply reducing the aperture of the small oil inlet hole, the range is small due to the single small hole, and the risk of dry grinding of the oil pump is increased after the oil pump is blocked by sundries. Therefore, a gap type forced lubrication oil inlet screw seat of the oil injection pump is needed to be designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a gap type forced lubrication oil inlet screw seat of an oil injection pump,
the technical scheme of the utility model is realized like this:
the gap type forced lubrication oil inlet screw seat of the oil injection pump is characterized by comprising a pump body, wherein a pump cavity is arranged in the pump body, a cam shaft is arranged in the pump cavity, an oil inlet through hole is formed in the position, close to the bottom of the pump cavity, of the pump body, an oil inlet screw seat is arranged in the oil inlet through hole, an oil inlet screw is arranged in the oil inlet screw seat, an oil inlet pipe is arranged between the oil inlet screw and the oil inlet screw seat, an oil inlet channel is arranged in the oil inlet screw, the oil inlet channel comprises a side hole channel and a straight hole channel, the oil inlet screw seat comprises an installation cavity and an oil inlet cavity, a sinking platform is arranged between the installation cavity and the oil inlet cavity, the oil inlet cavity is far away from one end of the sinking platform, an annular array is provided with riveting points, a steel ball is arranged in the oil inlet cavity, and the diameter of the steel ball is smaller than that of the oil inlet cavity and larger than the inner diameter of the sinking platform.
The utility model discloses an among this kind of injection pump slot formula force-feed oil feed screw seat, loop through threaded connection between the pump body, oil feed screw seat and the oil feed screw.
The utility model discloses an among this kind of injection pump slot formula force-feed oil feed screw seat, advance oil pipe respectively with be equipped with the sealing member between oil feed screw seat and the oil feed screw, the sealing member includes sealing washer and seal gasket.
The utility model discloses an in this kind of injection pump slot formula force-feed oil feed screw seat, the camshaft passes through tapered roller bearing and installs in the pump body.
The utility model discloses an in this kind of injection pump crack formula force-feed oil feed screw seat, the outside of oil feed screw seat is equipped with the open slot, be equipped with in the open slot the sealing washer.
Implement the utility model discloses a this kind of injection pump gap formula force-feed oil feed screw seat has following beneficial effect:
the novel lubricating oil inlet screw seat is characterized in that:
(1) the utility model discloses improve former hole formula for the slot formula, the circulation cross-section can show under the close condition of cross sectional area that overflows increase wet week, reduces the flow to reach the purpose that reduces the oil level height of pump intracavity, and because wet week is longer, be difficult for blockking up by individual debris, the good reliability.
(2) Simple structure and low cost. The utility model discloses an oil feed screw seat only need place a steel ball in the lubricating oil inlet, the drill way rivet point again can, utilize the gap of round hole and steel ball to control lubricating oil feed flow, and the oil level height in the effective control pump chamber, and then obtain a reasonable oil level height.
(3) The utility model discloses an oil feed screw seat has certain independence, can arrange other positions at the pump body according to the supporting requirement of host computer, arranges even on the speed regulator.
Drawings
Fig. 1 illustrates a conventional oil feeding manner of a forced lubrication oil injection pump in the prior art;
FIG. 2 shows the oil inlet and return mode of the forced lubrication oil injection pump before the improvement of the applicant;
FIG. 3 is a sectional view taken along line A of FIG. 2;
FIG. 4 is an enlarged schematic view of the oil inlet screw seat in FIG. 2;
FIG. 5 is a schematic view of the oil inlet screw seat in FIG. 4;
fig. 6 is a schematic structural view of the gap type forced lubrication oil inlet screw seat of the oil injection pump of the present invention;
fig. 7 is a right side view of fig. 5.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1 to 7 the utility model discloses a this kind of injection pump slot type force-feed oil feed screw seat, it includes the pump body 10, be equipped with pump chamber 11 in the pump body 10, be equipped with camshaft 12 in the pump chamber 11, the position that the pump body 10 is close to pump chamber 11 bottom is equipped with oil feed through-hole 13, be equipped with oil feed screw seat 14 in the oil feed through-hole 13, be equipped with oil feed screw 15 in the oil feed screw seat 14, be equipped with oil inlet pipe 16 between oil feed screw 15 and the oil feed screw seat 14, be equipped with oil feed passageway 151 in the oil feed screw 15, oil feed passageway 151 includes side opening passageway 152 and straight hole passageway 153.
The oil inlet screw seat 14 comprises a mounting cavity 141 and an oil inlet cavity 142, a sinking platform 143 is arranged between the mounting cavity 141 and the oil inlet cavity 142, riveting points 145 are annularly arrayed at one end, far away from the sinking platform 143, of the oil inlet cavity 142, steel balls 144 are arranged in the oil inlet cavity 142, the diameter of each steel ball 144 is smaller than that of the oil inlet cavity 142 and larger than the inner diameter of the sinking platform 143, the steel balls 144 are clamped in the oil inlet cavity 142 through the riveting points 145, namely the diameter of a circle formed by encircling of the end portions of the riveting points 145 is smaller than that of the steel balls 144, so that the steel balls 144 can be prevented from falling out, and the steel balls 144 are limited in the oil inlet cavity 142. A steel ball 144 is placed in the oil inlet cavity 142, a riveting point 145 is arranged at an orifice of the oil inlet cavity 144 and is in point contact with the steel ball 144, and the flow of lubricating oil is not throttled while the steel ball 144 is prevented from falling off. The gap between the oil inlet cavity and the steel ball 144 is used for controlling the oil inlet flow of the lubricating oil, so that the oil level height of the lubricating oil in the pump cavity 11 is easier to control.
Furthermore, according to the definition of the fluid flow, the volume or mass of the medium passing through the pipeline in unit time is expressed as: flow rate is the flow rate and cross sectional area. Under the condition of the same sectional area, different sectional shapes and different wet circumferences (the definition of the wet circumference is a boundary line of contact between fluid and a solid wall surface on an overflowing section), the fluid mechanics knowledge tells that the larger the overflowing section area is, the smaller the flow speed and the flow are, and the oil inlet cavity has the minimum wet circumference and the maximum flow. The utility model discloses improve former hole formula for the slot formula, the circulation cross-section can show the increase wet week under the close condition of cross sectional area that overflows, reduces the flow to reach the purpose that reduces the oil level height in the pump chamber 11, and because the wet week is longer, be difficult for blockking up by individual debris, good reliability.
Preferably, the pump body 10, the oil inlet screw seat 14 and the oil inlet screw 15 are sequentially connected through threads. And a sealing element 161 is arranged between the oil inlet pipe 16 and the oil inlet screw seat 14 and between the oil inlet pipe 16 and the oil inlet screw 15 respectively, and the sealing element 161 comprises a sealing ring 162 and a sealing gasket 163. The installation is convenient, the sealing effect is good, and the diesel oil leakage is avoided.
Preferably, the camshaft 12 is mounted in the pump body 10 by means of a tapered roller bearing 121. With the tapered roller bearing, diesel oil can flow back to the diesel engine through gaps between rollers of the tapered roller bearing.
Preferably, an opening groove 146 is formed on the outer side of the oil inlet screw seat 14, and a sealing ring 162 is arranged in the opening groove 146. The sealing performance between the oil inlet screw seat 14 and the oil inlet through hole 13 is further improved.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The gap type forced lubrication oil inlet screw seat of the oil injection pump is characterized by comprising a pump body, wherein a pump cavity is arranged in the pump body, a cam shaft is arranged in the pump cavity, an oil inlet through hole is formed in the position, close to the bottom of the pump cavity, of the pump body, an oil inlet screw seat is arranged in the oil inlet through hole, an oil inlet screw is arranged in the oil inlet screw seat, an oil inlet pipe is arranged between the oil inlet screw and the oil inlet screw seat, an oil inlet channel is arranged in the oil inlet screw, the oil inlet channel comprises a side hole channel and a straight hole channel, the oil inlet screw seat comprises an installation cavity and an oil inlet cavity, a sinking platform is arranged between the installation cavity and the oil inlet cavity, the oil inlet cavity is far away from one end of the sinking platform, an annular array is provided with riveting points, a steel ball is arranged in the oil inlet cavity, and the diameter of the steel ball is smaller than that of the oil inlet cavity and larger than the inner diameter of the sinking platform.
2. The gap type forced lubrication oil inlet screw seat of the oil injection pump of claim 1, wherein the pump body, the oil inlet screw seat and the oil inlet screw are sequentially connected through threads.
3. The oil injection pump gap type forced lubrication oil inlet screw seat according to claim 1, wherein the camshaft is installed in the pump body through a tapered roller bearing.
4. The gap type forced lubricating oil inlet screw seat of the oil injection pump according to claim 1, wherein a sealing element is arranged between the oil inlet pipe and the oil inlet screw seat and between the oil inlet pipe and the oil inlet screw seat respectively, and the sealing element comprises a sealing ring and a sealing gasket.
5. The gap type forced lubrication oil inlet screw seat of the oil injection pump of claim 4, wherein an open groove is formed in the outer side of the oil inlet screw seat, and the sealing ring is arranged in the open groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121336340.3U CN214887433U (en) | 2021-06-16 | 2021-06-16 | Gap type forced lubricating oil inlet screw seat of fuel injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121336340.3U CN214887433U (en) | 2021-06-16 | 2021-06-16 | Gap type forced lubricating oil inlet screw seat of fuel injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214887433U true CN214887433U (en) | 2021-11-26 |
Family
ID=78905090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121336340.3U Expired - Fee Related CN214887433U (en) | 2021-06-16 | 2021-06-16 | Gap type forced lubricating oil inlet screw seat of fuel injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214887433U (en) |
-
2021
- 2021-06-16 CN CN202121336340.3U patent/CN214887433U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |