CN2818841Y - Device against frost crack of cylinder cap of air pump - Google Patents
Device against frost crack of cylinder cap of air pump Download PDFInfo
- Publication number
- CN2818841Y CN2818841Y CN 200520122286 CN200520122286U CN2818841Y CN 2818841 Y CN2818841 Y CN 2818841Y CN 200520122286 CN200520122286 CN 200520122286 CN 200520122286 U CN200520122286 U CN 200520122286U CN 2818841 Y CN2818841 Y CN 2818841Y
- Authority
- CN
- China
- Prior art keywords
- air pump
- cylinder cover
- connecting head
- piston
- main channel
- 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 - Fee Related
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Abstract
The utility model discloses a frost crack preventing device of a cylinder cap of an air pump, which is arranged at an open end of a main water passage. The utility model comprises a piston, a spring and a connecting head, wherein the piston and the spring are arranged in the main water passage, and liquid sealing is carried out between the piston and the main water passage; the connecting head is arranged the open end of a main water passage; one end of the spring acts on the connecting head, and the other end acts on the piston. The utility model is characterized in that the connecting head 3 is connected with the inner side wall of the main water passage 2 by threads. The utility model solves the problems that the obsolete damage can easily occur to a cylinder cap of an air pump when the existing frost crack preventing device of a cylinder cap of an air pump is used, and the service life of the cylinder cap of an air pump is short. The utility model can be applied to cylinder caps of an on-off air pumps of doors of vehicles, and cylinder caps of some other small inflation pumps.
Description
Technical field
The utility model relates to a kind of air compression plant, the anti-bursting by freezing device on particularly a kind of Cylinder cover for air pump.
Background technique
Air pump can be used for a lot of fields as a kind of air compression plant.Air pump is when work, and the piston in the cylinder compresses the air that enters in the cylinder, and piston can produce certain heat when air is compressed, and this can make Cylinder cover for air pump produce creep.Therefore, Cylinder cover for air pump is shorter working life, and 2-3 just needs to change.All be provided with the circulation water channel on the general Cylinder cover for air pump, feed cooling water in it, mobile cooling water can be taken away a part of heat that air pump is produced when work, and this can delay the creep effect of Cylinder cover for air pump, the working life of having improved Cylinder cover for air pump.
Circulation water channel on the Cylinder cover for air pump comprises a main channel and some other diversion channel, for easy to process, have one on this main channel and leads to the outer opening of Cylinder cover for air pump.By among Fig. 2 as can be seen, early stage Cylinder cover for air pump is after manufacturing finishes, the opening of the main channel 2 on Cylinder cover for air pump 1 is provided with a stamping forming plug 8, plug 8 and main channel 2 madial wall drive fits, and scribble locking glue on both fitting surfaces, this Cylinder cover for air pump does not have the effect of anti-bursting by freezing, under the lower situation of external temperature, when air pump quits work, need put the cooling water in the circulation water channel totally, understand the bursting by freezing Cylinder cover for air pump otherwise be full of after the interior cooling water of circulation water channel freezes, cause scrapping of Cylinder cover for air pump.The air pump that has the above-mentioned cooling structure Cylinder cover for air pump trouble that when operation, seems.
In order to overcome above-mentioned defective, someone has invented a kind of Cylinder cover for air pump with certain anti-bursting by freezing effect, as seen from Figure 3, the opening end of the main channel 2 on Cylinder cover for air pump 1 is provided with an anti-bursting by freezing device, its mainly by be located at piston 5, the spring seat 10 in the main channel and be located at piston and spring seat between spring 7 constitute, wherein piston 5 and spring 7 are located in the main channel 2 on the Cylinder cover for air pump 1, spring seat 10 is positioned at the opening of this main channel 2, and the two ends of spring 7 act on respectively on spring seat 10 and the piston 5.Be provided with jump ring 9 in order to stop spring seat 10 at the opening of main channel 2, jump ring 9 is in order to fix whole anti-bursting by freezing device.The effect of this anti-bursting by freezing device its anti-bursting by freezing in use is also not satisfactory, the phenomenon of freezing is taking place in the cooling water in the circulation water channel on the Cylinder cover for air pump 1, when spring seat 10 is subjected to than the compressive force of big spring, jump ring 9 easily makes the outer step part of jump ring groove be crumbled, thereby causes whole Cylinder cover for air pump to be scrapped; Therefore it is unreliable to prevent that the bursting by freezing device used, and can not get the working life of Cylinder cover for air pump 1 guaranteeing.This be because, the jump ring groove is in process of production because technological reason, its concentricity can not well be guaranteed, after jump ring is assembled on the Cylinder cover for air pump, in case stressed excessive, the rollover phenomenon very easily takes place.In addition, owing to should have certain axial length by anti-bursting by freezing device, the jump ring slot pitch in the main channel is less from the size of main channel open end, and Cylinder cover for air pump generally is to be formed by aluminium alloy casting, its intensity is relatively low, after jump ring is subjected to bigger axial pressure, Cylinder cover for air pump is damaged.
The model utility content
The purpose of this utility model is to provide a kind of novel Cylinder cover for air pump to prevent the bursting by freezing device, after it is assembled on the Cylinder cover for air pump, under the lower situation of external temperature, do not need the cooling water in the Cylinder cover for air pump is bled off fully, also be difficult for making the damage of scrapping property of Cylinder cover for air pump even the cooling water in the Cylinder cover for air pump freezes, improved the stability in use of Cylinder cover for air pump.
The purpose of this utility model is to realize like this, a kind of Cylinder cover for air pump is prevented the bursting by freezing device, be located at the open end of Cylinder cover for air pump main channel, comprise piston, spring, connecting head, described piston, spring are located in the main channel, seal between piston and the main channel, connecting head is located at the opening of main channel, and an end of spring is replaced on connecting head, and the other end is replaced on piston, it is characterized in that, between the madial wall of described connecting head and main channel for being threaded.
The beneficial effects of the utility model: since between the inwall of connecting head and main channel for being threaded, with respect to the fixing effect that utilizes jump ring, the axial dimension of connecting head and main channel fitting surface can be relatively large, and has connective stability preferably when being threaded, connecting head is when being subjected to bigger axial pressure, screw thread between connecting head and the main channel is not fragile, has guaranteed the stability in use of this anti-bursting by freezing device, the working life of having improved Cylinder cover for air pump.After this device is assembled on the Cylinder cover for air pump, need be not lower in external temperature, do not use the cooling water in the following Cylinder cover for air pump of situation of air pump to bleed off, simplified the programmed sequence of operations of air pump.
Description of drawings
Accompanying drawing 1 is that the utility model is assemblied in the partial sectional view on the Cylinder cover for air pump;
Accompanying drawing 2 is partial sectional views of existing Cylinder cover for air pump:
Accompanying drawing 3 is the partial sectional views that are equipped with anti-bursting by freezing device Cylinder cover for air pump in the prior art.
Embodiment
Shown in Fig. 1 is the anti-bursting by freezing device of the utility model Cylinder cover for air pump, it is located in the opening end of main channel 2 on the Cylinder cover for air pump 1, mainly constituted by connecting head 3, spring 7, piston 5, connecting head 3 is threaded in the opening of main channel 2 on the Cylinder cover for air pump 1, spring 7, piston 5 are located in the opening end in the main channel 2, the two ends of spring 7 are replaced respectively on connecting head 3 and piston 5, are liquid sealing between the sidewall of this piston 5 and main channel 2.In the utility model between connecting head 3 and main channel 2 madial walls for being threaded, the axial dimension of fitting surface can be set to bigger between connecting head 3 and the main channel 2, join strength between the two can be guaranteed, when connecting head 3 is subjected to bigger axial pressure, can with water-supply line 2 sliding phenomenon not take place easily, but the merit that axial pressure is done is stored as the potential energy of spring, therefore need be under the lower situation of external temperature, after air pump quits work, cooling water in the Cylinder cover for air pump 1 is bled off fully, improve the stability in use of Cylinder cover for air pump 1, simplified the program of air pump operation.
For improve Cylinder cover for air pump 1 integrally-built compactedness and satisfy connecting head 3 and main channel 2 between matching requirements, above-mentioned connection 3 is stair-stepping cylindrical body, its outer end is provided with a hole enlargement boss 12, corresponding position on Cylinder cover for air pump 1 is provided with the pit that matches with this boss 12 structures, after connecting head 3 was assemblied in the main channel 2, this boss 12 can be submerged in the above-mentioned pit fully.The structure of connecting head 3 and main channel 2 openings has guaranteed the integrally-built compactedness of Cylinder cover for air pump 1.
On the exterior edge face of connecting head 3, can be provided with at least two blind holes 11, can utilize assistant tool that connecting head 3 is assembled and disassembling section so easily by other.
In this anti-bursting by freezing device, described connecting head 3 is provided with the vent 4 that leads in the main channel 2.When the cooling water in the Cylinder cover for air pump 1 take place to freeze and when causing the volume of cooling medium to become big, piston 5 can be towards the direction slippage of connecting head 3, connecting head 3 has been provided with vent 4, the air between connecting head 3 and the piston 5 can be compressed, but overflow main channel 2 by this vent 4; Can prevent that the air between connecting head 3 and piston 5 from producing reaction force because of being compressed to piston 5, improved the smoothness that piston 5 slides.
Also can be provided with O RunddichtringO 6 on the outer circumferential face of piston 5, the sealing that it has improved between piston 5 and main channel 2 sidewalls prevents that cooling water from overflowing, and satisfied actual user demand between piston 5 and main channel 2 sidewalls.
Claims (5)
1, the anti-bursting by freezing device of a kind of Cylinder cover for air pump, be located at the open end of Cylinder cover for air pump main channel, comprise piston, spring, connecting head, described piston, spring are located in the main channel, seal between piston and the main channel, and connecting head is located at the opening of main channel, one end of spring is replaced on connecting head, the other end is replaced on piston, it is characterized in that, between the madial wall of described connecting head (3) and main channel (2) for being threaded.
2, the anti-bursting by freezing device of Cylinder cover for air pump according to claim 1 is characterized in that described connecting head (3) is provided with the vent (4) that leads in the main channel (2).
3, the anti-bursting by freezing device of Cylinder cover for air pump according to claim 1 and 2, it is characterized in that, described connecting head (3) is stepped cylindrical body, and its outer end is provided with a hole enlargement boss (12), and the opening of Cylinder cover for air pump (1) main channel (2) is provided with the pit that matches with this boss (12).
4, the anti-bursting by freezing device of Cylinder cover for air pump according to claim 3 is characterized in that the exterior edge face of described connecting head (3) is provided with at least two blind holes (1).
5, the anti-bursting by freezing device of Cylinder cover for air pump according to claim 1 and 2 is characterized in that described piston (5) is provided with O RunddichtringO (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122286 CN2818841Y (en) | 2005-09-27 | 2005-09-27 | Device against frost crack of cylinder cap of air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122286 CN2818841Y (en) | 2005-09-27 | 2005-09-27 | Device against frost crack of cylinder cap of air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2818841Y true CN2818841Y (en) | 2006-09-20 |
Family
ID=37004896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520122286 Expired - Fee Related CN2818841Y (en) | 2005-09-27 | 2005-09-27 | Device against frost crack of cylinder cap of air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2818841Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730164A (en) * | 2018-07-11 | 2018-11-02 | 金辉 | Device against frost crack of cylinder cap of air pump |
-
2005
- 2005-09-27 CN CN 200520122286 patent/CN2818841Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730164A (en) * | 2018-07-11 | 2018-11-02 | 金辉 | Device against frost crack of cylinder cap of air pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060920 Termination date: 20091027 |