CN216131015U - Pump head of common rail pump - Google Patents
Pump head of common rail pump Download PDFInfo
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- CN216131015U CN216131015U CN202121192239.5U CN202121192239U CN216131015U CN 216131015 U CN216131015 U CN 216131015U CN 202121192239 U CN202121192239 U CN 202121192239U CN 216131015 U CN216131015 U CN 216131015U
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- oil inlet
- oil
- pump head
- pressure accumulator
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Abstract
The utility model discloses a common rail pump head, comprising: the pump head component comprises a pressure accumulator and two oil-through valve seats, the pressure accumulator and the two oil-through valve seats are assembled through bolts, a sealing structure is clamped between the pressure accumulator and the two oil-through valve seats, meanwhile, a detachable structure is arranged between the pressure accumulator and the two oil-through valve seats, a tightening cap is installed on the outer side of the pressure accumulator, and a hydraulic sensor is installed on the upper left side of the pressure accumulator; the oil inlet chamber has been seted up to pump head part's accumulator inside, and the fixed plate that is provided with in oil inlet chamber inside, and fixed plate bottom and reset spring are fixed to the one end that reset spring kept away from the fixed plate sets up with the oil inlet valve steel ball is fixed. This common rail pump head when needs are dismantled the inlet valve steel ball, will go up the fixed pterygoid lamina and dismantle with the fixed screw on the fixed pterygoid lamina down this moment, and the inlet valve steel ball at this moment exposes outside, is convenient for dismantle the change work to the inlet valve steel ball this moment.
Description
Technical Field
The utility model relates to the field of common rail pumps, in particular to a common rail pump head.
Background
With increasingly stringent emissions regulations, high pressure common rail fuel injection systems have become the mainstream of diesel fuel injection systems. The electric control technology of the diesel engine provides realistic possibility for the diesel engine to obtain better emission index, power performance and economic performance. The high-pressure oil pump is an important component of a high-pressure common rail fuel injection system, and the technical level of the high-pressure oil pump directly determines the reliability, the dynamic property and the economical efficiency of a terminal product. Therefore, how to improve the oil supply stability, the oil supply capability, the installability and reduce the processing cost of the high-pressure oil pump becomes a problem which needs to be considered in product development.
In order to solve the defects, through retrieval, the utility model with the bulletin number of CN109538388A discloses a single common rail pump assembly for a single cylinder diesel engine, which comprises an accumulator and a two-way oil valve seat arranged on a pump body, wherein the accumulator is detachably connected with the two-way oil valve seat, the two-way oil valve seat is provided with an oil inlet hole with two ends respectively communicated with an oil inlet cavity and the oil inlet cavity of the pump body, the two-way oil valve seat is provided with an oil outlet hole with two ends respectively communicated with an oil outlet cavity and a high-pressure oil cavity, the oil inlet cavity and the oil outlet cavity are arranged on the accumulator, the oil inlet cavity is contacted with the oil inlet hole through an oil inlet valve spring seat, an oil inlet valve spring and an oil inlet valve steel ball which are sequentially connected, and the oil inlet valve spring seat is connected with the accumulator to form an oil inlet control structure; "
After the oil inlet valve steel ball is used for a long time, the surface of the oil inlet valve steel ball is abraded, so that the surface deformation of the oil inlet valve steel ball is caused, and the sealing performance of the oil inlet valve steel ball is greatly reduced.
In view of the above, the present invention has been made in view of the above problems.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a common rail pump head to solve the above mentioned drawbacks.
To achieve the above object, there is provided a common rail pump head including:
the pump head component comprises a pressure accumulator and two oil-through valve seats, the pressure accumulator and the two oil-through valve seats are assembled through bolts, a sealing structure is clamped between the pressure accumulator and the two oil-through valve seats, meanwhile, a detachable structure is arranged between the pressure accumulator and the two oil-through valve seats, a tightening cap is installed on the outer side of the pressure accumulator, and a hydraulic sensor is installed on the upper left side of the pressure accumulator;
the oil inlet chamber has been seted up to pump head part's accumulator inside, and the fixed plate that is provided with in oil inlet chamber inside, and fixed plate bottom and reset spring are fixed to the one end that reset spring kept away from the fixed plate sets up with the oil inlet valve steel ball is fixed.
Preferably, the pressure accumulator comprises an upper fixed seat, a fixed plate, an oil inlet cavity, a reset spring, an oil inlet valve steel ball, an upper sealing groove, an upper closing groove, an upper fixed wing plate and a blocking strip, and the bottom of the upper fixed seat is welded and fixed with the upper fixed wing plate.
Preferably, six groups of upper fixing holes are uniformly formed in the outer circumferential position of the upper fixing wing plate, six groups of lower fixing holes are uniformly formed in the outer circumferential position of the lower fixing wing plate, the upper fixing holes and the lower fixing holes are oppositely arranged, and the upper fixing holes and the lower fixing holes are fixed through bolts.
Preferably, last closing groove has been seted up to the bottom of going up fixed pterygoid lamina, and goes up the inboard of closing groove and seted up last seal groove, goes up the degree of depth of seal groove and equals the half of last closing groove degree of depth, goes up closing groove and last seal groove and is the annular setting.
Preferably, the two-way oil valve seat comprises a lower fixing wing plate, a lower tight closing groove, a lower sealing groove, a lower fixing seat and an oil inlet hole, the oil inlet hole is formed in the lower fixing seat, the oil inlet hole is opposite to the oil inlet cavity, and the oil inlet hole is separated from the oil inlet cavity through an oil inlet valve steel ball.
Preferably, the upper surface of lower fixed pterygoid lamina has seted up down tight closed groove, and has seted up down the seal groove down in the tight closed groove inboard, and lower seal groove is the annular setting with lower tight closed groove, and lower seal groove sets up with last seal groove relatively, and lower tight closed groove sets up with last closed groove relatively.
Preferably, the sealing structure comprises an outer sealing gasket and an inner sealing gasket, the outer sealing gasket comprises an upper positioning strip, a rubber gasket, a blocking groove and a lower positioning strip, the upper side of the rubber gasket is fixedly arranged with the upper positioning strip, the lower side of the rubber gasket is fixedly arranged with the lower positioning strip, the upper positioning strip is inserted into the upper closing groove, the lower positioning strip is inserted into the lower closing groove, annular blocking strips are arranged on the upper surface of the lower fixing wing plate and the lower surface of the upper fixing wing plate, the upper surface and the lower surface of the rubber gasket are both provided with the blocking groove, the blocking strips are extruded and inserted into the blocking groove, and the cross sections of the blocking groove and the blocking strips are both in an isosceles trapezoid shape; the upper surface of the inner sealing gasket is inserted in the upper sealing groove, and the lower surface of the inner sealing gasket is inserted in the lower sealing groove.
Compared with the prior art, the utility model has the beneficial effects that:
1. when the oil inlet valve steel ball needs to be disassembled, the fixing screws on the upper fixing wing plate and the lower fixing wing plate are disassembled, the oil inlet valve steel ball is exposed outside, and the oil inlet valve steel ball is convenient to disassemble and replace;
2. placing an inner sealing gasket in the lower sealing groove, simultaneously placing an outer sealing gasket in the lower sealing groove, pressing the upper fixed wing plate on the lower fixed wing plate, extruding the inner sealing gasket and the outer sealing gasket under stress, filling a gap between the upper fixed wing plate and the lower fixed wing plate, and then performing height adjustment through six groups of bolts to ensure the sealing property of the connection between the upper fixed wing plate and the lower fixed wing plate;
3. the stop strip is pegged graft inside stopping the recess, stops the strip and stops interference fit between the recess, stops the strip and stops the setting of recess, can seal between last fixed pterygoid lamina, the lower fixed pterygoid lamina.
Drawings
FIG. 1 is a schematic front view of the structure of the present invention;
FIG. 2 is a schematic view of a pressure accumulator and two-way oil valve seat of the present invention;
FIG. 3 is a bottom view of the structural securing wing panel of the present invention;
FIG. 4 is a top view of the lower wing plate of the present invention;
fig. 5 is a partial structural view of the structural diagram 2 of the present invention.
Reference numbers in the figures: 1. a pump head component; 11. an accumulator; 111. an upper fixed seat; 112. a fixing plate; 113. an oil inlet cavity; 114. a return spring; 115. an oil inlet valve steel ball; 116. an upper seal groove; 117. an upper closed slot; 118. an upper fixing wing plate; 119. a barrier strip; 12. a two-way oil valve seat; 121. a lower fixed wing plate; 122. a lower fastening groove; 123. a lower seal groove; 124. a lower fixed seat; 125. an oil inlet hole; 13. a sealing structure; 131. an outer seal gasket; 1311. an upper positioning strip; 1312. a rubber pad; 1313. blocking the groove; 1314. a lower positioning strip; 132. an inner seal; 2. tightening the cap; 3. and a hydraulic pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a common rail pump head, including: a pump head component 1;
the pump head component 1 comprises an accumulator 11 and two oil-through valve seats 12, the accumulator 11 and the two oil-through valve seats 12 are assembled through bolts, a sealing structure 13 is clamped between the accumulator 11 and the two oil-through valve seats 12, the accumulator 11 and the two oil-through valve seats 12 are of a detachable structure, a tightening cap 2 is installed on the outer side of the accumulator 11, and a hydraulic sensor 3 is installed on the upper left side of the accumulator 11;
an oil inlet cavity 113 is formed in the pressure accumulator 11 of the pump head component 1, a fixing plate 112 is fixedly arranged in the oil inlet cavity 113, the bottom of the fixing plate 112 is fixedly arranged with a return spring 114, and one end of the return spring 114, which is far away from the fixing plate 112, is fixedly arranged with an oil inlet valve steel ball 115.
When the oil inlet valve steel ball 115 needs to be disassembled, the fixing screws on the upper fixing wing plate 118 and the lower fixing wing plate 121 are disassembled, and the oil inlet valve steel ball 115 is exposed outside, so that the oil inlet valve steel ball 115 is convenient to disassemble and replace;
in order to prevent oil leakage between the upper fixing wing plate 118 and the lower fixing wing plate 121, the inner gasket 132 is placed inside the lower sealing groove 123, the outer gasket 131 is placed inside the lower fastening groove 122, the upper fixing wing plate 118 is pressed against the lower fixing wing plate 121, the inner gasket 132 and the outer gasket 131 are pressed by force, a gap between the upper fixing wing plate 118 and the lower fixing wing plate 121 is filled, and then the height is increased by six sets of bolts, so that the sealing performance of connection between the upper fixing wing plate 118 and the lower fixing wing plate 121 is ensured.
In a preferred embodiment, the accumulator 11 includes an upper fixing seat 111, a fixing plate 112, an oil inlet chamber 113, a return spring 114, an oil inlet valve ball 115, an upper seal groove 116, an upper close groove 117, an upper fixing wing 118 and a stop bar 119, and the bottom of the upper fixing seat 111 is welded to the upper fixing wing 118.
The blocking strip 119 is inserted into the blocking groove 1313, the blocking strip 119 and the blocking groove 1313 are in interference fit, and the arrangement of the blocking strip 119 and the blocking groove 1313 can seal the upper fixing wing plate 118 and the lower fixing wing plate 121.
As a preferred embodiment, six sets of upper fixing holes are uniformly formed at the outer circumferential position of the upper fixing wing plate 118, six sets of lower fixing holes are uniformly formed at the outer circumferential position of the lower fixing wing plate 121, the upper fixing holes and the lower fixing holes are oppositely disposed, and the upper fixing holes and the lower fixing holes are fixed by bolts.
In a preferred embodiment, the bottom of the upper fixing wing 118 is formed with an upper closing groove 117, and the inner side of the upper closing groove 117 is formed with an upper sealing groove 116, the depth of the upper sealing groove 116 is equal to half of the depth of the upper closing groove 117, and both the upper closing groove 117 and the upper sealing groove 116 are annularly disposed.
As a preferred embodiment, the two oil passing valve seats 12 include a lower fixing wing plate 121, a lower closing groove 122, a lower sealing groove 123, a lower fixing seat 124 and an oil inlet 125, wherein the oil inlet 125 is formed in the lower fixing seat 124, the oil inlet 125 is opposite to the oil inlet 113, and the oil inlet 125 is separated from the oil inlet 113 by an oil inlet valve ball 115.
In a preferred embodiment, the upper surface of the lower fixing wing 121 is formed with a lower sealing groove 122, the inner side of the lower sealing groove 122 is formed with a lower sealing groove 123, the lower sealing groove 123 and the lower sealing groove 122 are both annularly disposed, the lower sealing groove 123 is disposed opposite to the upper sealing groove 116, and the lower sealing groove 122 is disposed opposite to the upper sealing groove 117.
As a preferred embodiment, the sealing structure 13 includes an outer sealing gasket 131 and an inner sealing gasket 132, the outer sealing gasket 131 includes an upper positioning strip 1311, a rubber gasket 1312, a blocking groove 1313 and a lower positioning strip 1314, an upper side of the rubber gasket 1312 is fixedly disposed with the upper positioning strip 1311, a lower side of the rubber gasket 1312 is fixedly disposed with the lower positioning strip 1314, the upper positioning strip 1311 is inserted into the upper closing groove 117, the lower positioning strip 1314 is inserted into the lower closing groove 122, both an upper surface of the lower fixing wing 121 and a lower surface of the upper fixing wing 118 are provided with an annular blocking strip 119, both an upper surface and a lower surface of the rubber gasket 1312 are provided with the blocking groove 1313, the blocking strip 119 is inserted into the blocking groove 1313 in an extruding manner, and cross sections of the blocking groove 1313 and the blocking strip 119 are both in an isosceles trapezoid shape; the upper surface of the inner seal 132 is inserted into the upper seal groove 116, and the lower surface of the inner seal 132 is inserted into the lower seal groove 123.
The inner sealing gasket 132 serves as a first sealing barrier between the upper fixing wing plate 118 and the lower fixing wing plate 121, the outer sealing gasket 131 serves as a second sealing barrier between the upper fixing wing plate 118 and the lower fixing wing plate 121, the first sealing barrier and the second sealing barrier form a sealing system between the upper fixing wing plate 118 and the lower fixing wing plate 121, and due to the arrangement of the sealing system, the situation that the joint between the upper fixing wing plate 118 and the lower fixing wing plate 121 leaks can be avoided.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A common rail pump head, comprising:
the pump head component (1) comprises a pressure accumulator (11) and two oil-through valve seats (12), the pressure accumulator (11) and the two oil-through valve seats (12) are assembled through bolts, a sealing structure (13) is clamped between the pressure accumulator (11) and the two oil-through valve seats (12), meanwhile, a detachable structure is arranged between the pressure accumulator (11) and the two oil-through valve seats (12), a tightening cap (2) is installed on the outer side of the pressure accumulator (11), and a hydraulic sensor (3) is installed on the upper left side of the pressure accumulator (11);
the oil pump comprises a pump head component (1), wherein an oil inlet cavity (113) is formed in the pressure accumulator (11) of the pump head component (1), a fixing plate (112) is fixedly arranged in the oil inlet cavity (113), the bottom of the fixing plate (112) is fixedly arranged with a return spring (114), and one end, far away from the fixing plate (112), of the return spring (114) is fixedly arranged with an oil inlet valve steel ball (115).
2. A common rail pump head as claimed in claim 1, wherein: the pressure accumulator (11) comprises an upper fixing seat (111), a fixing plate (112), an oil inlet cavity (113), a return spring (114), an oil inlet valve steel ball (115), an upper sealing groove (116), an upper closing groove (117), an upper fixing wing plate (118) and a blocking strip (119), and the bottom of the upper fixing seat (111) is welded and fixed with the upper fixing wing plate (118).
3. A common rail pump head as claimed in claim 2, wherein: six groups of upper fixing holes are uniformly formed in the circumferential position of the outer side of the upper fixing wing plate (118), six groups of lower fixing holes are uniformly formed in the circumferential position of the outer side of the lower fixing wing plate (121), the upper fixing holes and the lower fixing holes are oppositely formed, and the upper fixing holes and the lower fixing holes are fixed through bolts.
4. A common rail pump head as claimed in claim 2, wherein: go up fixed pterygoid lamina (118) the bottom and seted up last seal groove (117), and go up the inboard of seal groove (117) and seted up upper seal groove (116), go up the depth of seal groove (116) and be equal to the half of last seal groove (117) the depth, go up seal groove (117) and go up seal groove (116) and be the annular setting.
5. A common rail pump head as claimed in claim 1, wherein: the two-way oil valve seat (12) comprises a lower fixing wing plate (121), a lower tight closing groove (122), a lower sealing groove (123), a lower fixing seat (124) and an oil inlet hole (125), the oil inlet hole (125) is formed in the lower fixing seat (124), the oil inlet hole (125) is arranged opposite to the oil inlet cavity (113), and the oil inlet hole (125) is separated from the oil inlet cavity (113) through an oil inlet valve steel ball (115).
6. A common rail pump head as claimed in claim 5, wherein: the upper surface of the lower fixing wing plate (121) is provided with a lower closing groove (122), the inner side of the lower closing groove (122) is provided with a lower sealing groove (123), the lower sealing groove (123) and the lower closing groove (122) are both arranged in an annular mode, the lower sealing groove (123) and the upper sealing groove (116) are arranged oppositely, and the lower closing groove (122) and the upper closing groove (117) are arranged oppositely.
7. A common rail pump head as claimed in claim 1, wherein: the sealing structure (13) comprises an outer sealing gasket (131) and an inner sealing gasket (132), the outer sealing gasket (131) comprises an upper positioning strip (1311), a rubber gasket (1312), a blocking groove (1313) and a lower positioning strip (1314), the upper side of the rubber mat (1312) is fixedly arranged with the upper positioning strip (1311), the lower side of the rubber mat (1312) is fixedly arranged with the lower positioning strip (1314), the upper positioning strip (1311) is inserted into the upper closing groove (117), the lower positioning strip (1314) is inserted into the lower closing groove (122), the upper surface of the lower fixing wing plate (121) and the lower surface of the upper fixing wing plate (118) are respectively provided with an annular blocking strip (119), the upper surface and the lower surface of the rubber mat (1312) are respectively provided with a blocking groove (1313), the blocking strip (119) is extruded and inserted into the blocking groove (1313), and the sections of the blocking groove (1313) and the blocking strip (119) are both in an isosceles trapezoid shape; the upper surface of the inner sealing gasket (132) is inserted in the upper sealing groove (116), and the lower surface of the inner sealing gasket (132) is inserted in the lower sealing groove (123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121192239.5U CN216131015U (en) | 2021-05-31 | 2021-05-31 | Pump head of common rail pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121192239.5U CN216131015U (en) | 2021-05-31 | 2021-05-31 | Pump head of common rail pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216131015U true CN216131015U (en) | 2022-03-25 |
Family
ID=80765960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121192239.5U Active CN216131015U (en) | 2021-05-31 | 2021-05-31 | Pump head of common rail pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216131015U (en) |
-
2021
- 2021-05-31 CN CN202121192239.5U patent/CN216131015U/en active Active
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