CN209354473U - Piston pressure testing sealing mechanism - Google Patents
Piston pressure testing sealing mechanism Download PDFInfo
- Publication number
- CN209354473U CN209354473U CN201920044209.6U CN201920044209U CN209354473U CN 209354473 U CN209354473 U CN 209354473U CN 201920044209 U CN201920044209 U CN 201920044209U CN 209354473 U CN209354473 U CN 209354473U
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- China
- Prior art keywords
- sealing mechanism
- limit sleeve
- pin hole
- end cap
- fuel feed
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Abstract
The utility model discloses a kind of piston pressure testing sealing mechanism, it is characterized by: the sealing mechanism includes limit sleeve, limiting section is provided with outside limit sleeve, the screw top of limit sleeve is connected with upper cover simultaneously, upper outer side of lid is symmetrically provided with two rotating handles, activity, which is worn, in limit sleeve is connected to oil inlet pipe, the top of the oil inlet pipe is connected with the bottom end in the upper cover channel being arranged on upper lid, the bottom end of the oil inlet pipe is stifled for rubber oil, the sealing mechanism further includes two symmetrically arranged fuel feed hole sealing mechanisms, the fuel feed hole sealing mechanism includes the pin hole set being directly fixedly connected with limit sleeve, pin hole set outside is provided with associated end cap, an annular groove is collectively formed on the pin hole set and the outer wall of end cap, spacer is provided in the groove, and between the spacer and pin hole set, every O-ring seals are provided between set and end cap, the fuel feed hole sealing mechanism further includes the bolt being threadedly coupled simultaneously with pin hole set and end cap.
Description
Technical field
The utility model relates to a kind of sealing mechanism, especially a kind of piston pressure testing sealing mechanism.
Background technique
Piston is one of core part of engine, the cooling chamber of piston whether oil leak, can will have a direct impact on piston just
The often operation that can cooling and piston safe within the temperature range of permission, and then influence the safety fortune of entire engine
Capable and piston service life.But piston is difficult to realize pressure testing, the reason is that there is oilhole in pin hole after being machined to finished product
It is communicated with cooling chamber, also there is oilhole to communicate with cooling chamber in inner cavity, while piston pin hole required precision is very high, must not scratched, especially
It is for aluminium skirt piston, since material is soft, if it is desired to carry out pressure testing experiment, be difficult to avoid its stroke during the experiment
Wound.In addition the oilhole in inner cavity is located on curved surface, is also not easy to block.Therefore a kind of side for being able to solve the above problem is needed now
Method or device.
Summary of the invention
The utility model be in order to solve above-mentioned deficiency present in the prior art, propose one kind can simultaneously sealing piston
The piston pressure testing sealing mechanism of oilhole and inner cavity oilhole in pin hole.
The technical solution of the utility model is: a kind of piston pressure testing sealing mechanism, it is characterised in that: described is close
Sealing mechanism includes limit sleeve 1, limiting section 2 is provided with outside limit sleeve 1, while the screw top of limit sleeve 1 is connected with upper cover 3,
Two rotating handles 4 are symmetrically provided on the outside of upper cover 3, activity, which is worn, in limit sleeve 1 is connected to oil inlet pipe 5, the oil inlet pipe 5
Top is connected with the bottom end in the upper cover channel 6 being arranged in upper cover 3, and the bottom end of the oil inlet pipe 5 is rubber oil stifled 7, described
Sealing mechanism further include two symmetrically arranged fuel feed hole sealing mechanisms 8, the fuel feed hole sealing mechanism 8 include directly with
Pin hole that limit sleeve 1 is fixedly connected set 9,9 outside of pin hole set are provided with associated end cap 10, the pin hole set 9 with
An annular groove is collectively formed on the outer wall of end cap 10, spacer 11, and the spacer 11 and pin are provided in the groove
O-ring seals 12 are provided between hole set 9, between spacer 11 and end cap 10, the fuel feed hole sealing mechanism 8 further includes one
The bolt 13 being threadedly coupled simultaneously with pin hole set 9 and end cap 10.
The utility model compared with the existing technology, has the advantages that
The piston pressure testing sealing mechanism of this kind of structure type, simple in sturcture, ingenious in design, rationally distributed, it is directed to
Finished product piston is difficult to realize the problem of can not carrying out pressure testing caused by excellent sealing, designs a kind of special sealing knot
Structure, the oil return hole that it is blocked up using longitudinally movable rubber oil come closed piston utilize a special fuel feed hole sealing mechanism
Carry out the fuel feed hole on closed piston, and then ensure that the leakproofness of piston entirety.In this sealing mechanism, directly connect with piston
Touching is all rubber, therefore piston face scuffing caused by can be avoided because of the reasons such as collide with.And all sealing rubber
Deflection can be changed by adjusting, to adjust its sealing performance, avoid revealing.And the present apparatus is easy to load and unload, and it is convenient
It uses, while manufacture craft is simple, manufacturing cost is cheap, it can be said that it has a variety of advantages, particularly suitable at this
It is promoted and applied in field, market prospects are very wide.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the structural schematic diagram of fuel feed hole sealing mechanism in the utility model embodiment.
Specific embodiment
Below in conjunction with Detailed description of the invention specific embodiment of the present utility model.It is as shown in Figure 1 and Figure 2: a kind of piston pressure testing
With sealing mechanism, including limit sleeve 1, limiting section 2 is provided with outside limit sleeve 1, while the screw top of limit sleeve 1 is connected with
Lid 3 is symmetrically provided with two rotating handles 4 on the outside of upper cover 3, and activity, which is worn, in limit sleeve 1 is connected to oil inlet pipe 5, the oil inlet
The top of pipe 5 is connected with the bottom end in the upper cover channel 6 being arranged in upper cover 3, and the bottom end of the oil inlet pipe 5 is rubber oil stifled 7,
The sealing mechanism further includes two symmetrically arranged fuel feed hole sealing mechanisms 8, and the fuel feed hole sealing mechanism 8 includes straight
The pin hole set 9 being fixedly connected with limit sleeve 1 is connect, 9 outside of pin hole set is provided with associated end cap 10, the pin hole set
9 with an annular groove is collectively formed on the outer wall of end cap 10, be provided with spacer 11 in the groove, and the spacer 11 with
O-ring seals 12 are provided between pin hole set 9, between spacer 11 and end cap 10, the fuel feed hole sealing mechanism 8 further includes one
Bolt 13 that is a while being threadedly coupled with pin hole set 9 and end cap 10.
The course of work of the piston pressure testing sealing mechanism of the utility model embodiment is as follows: need to the piston of finished product into
When row pressure testing is tested, this sealing mechanism is mounted in the inner cavity of piston, limiting section 2 is allowed to be pressed in upper piston area, then hold
4 rotary upper cover 3 of rotating handles, due to being threadedly coupled between upper cover 3 and limit sleeve 1, and limit sleeve 1 is fixed relative to piston,
Therefore the inner cavity oilhole of piston can be sealed relative to piston motion, bolt 13 then be rotated, in the work of bolt 13 by oil inlet pipe 5
Under, pin hole, which covers the distance between 9 and end cap 10, to be shortened, and two O-ring seals 12 are compressed jointly with spacer 11, caused by they
O-ring seals 12 deform, and realize the sealing of fuel feed hole；The inner cavity of piston is in sealing state at this time；Pressure can be sealed
Test.
Claims (1)
1. a kind of piston pressure testing sealing mechanism, it is characterised in that: the sealing mechanism includes limit sleeve (1), in limit sleeve
(1) it is provided with limiting section (2) outside, while the screw top of limit sleeve (1) is connected with upper cover (3), is symmetrically set on the outside of upper cover (3)
Set there are two rotating handles (4), wear and be connected to oil inlet pipe (5) in limit sleeve (1) interior activity, the top of the oil inlet pipe (5) with set
The bottom end for setting the upper cover channel (6) on upper cover (3) is connected, and the bottom end of the oil inlet pipe (5) is that rubber oil blocks up (7), described
Sealing mechanism further include two symmetrically arranged fuel feed hole sealing mechanisms (8), the fuel feed hole sealing mechanism (8) includes straight
The pin hole set (9) being fixedly connected with limit sleeve (1) is connect, is provided with associated end cap (10), institute on the outside of the pin hole set (9)
It states and an annular groove is collectively formed on the outer wall of pin hole set (9) and end cap (10), spacer (11) are provided in the groove,
And O-ring seals (12), institute are provided between the spacer (11) and pin hole set (9), between spacer (11) and end cap (10)
State the bolt (13) that fuel feed hole sealing mechanism (8) further includes one while being threadedly coupled with pin hole set (9) and end cap (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920044209.6U CN209354473U (en) | 2019-01-11 | 2019-01-11 | Piston pressure testing sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920044209.6U CN209354473U (en) | 2019-01-11 | 2019-01-11 | Piston pressure testing sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354473U true CN209354473U (en) | 2019-09-06 |
Family
ID=67802692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920044209.6U Active CN209354473U (en) | 2019-01-11 | 2019-01-11 | Piston pressure testing sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354473U (en) |
-
2019
- 2019-01-11 CN CN201920044209.6U patent/CN209354473U/en active Active
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