CN202017619U - Novel straightway oil feeding pump - Google Patents
Novel straightway oil feeding pump Download PDFInfo
- Publication number
- CN202017619U CN202017619U CN2010206687895U CN201020668789U CN202017619U CN 202017619 U CN202017619 U CN 202017619U CN 2010206687895 U CN2010206687895 U CN 2010206687895U CN 201020668789 U CN201020668789 U CN 201020668789U CN 202017619 U CN202017619 U CN 202017619U
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- Prior art keywords
- pump
- oil
- spool
- novel
- termination
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- 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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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The utility model discloses a novel straightway oil feeding pump, which comprises a pump shell. A pump head cavity, an oil inlet cavity and an oil outlet cavity are arranged inside the pump shell, the pump head cavity is communicated with the oil inlet cavity through an oil inlet hole and communicated with the oil outlet cavity through an oil outlet hole, and a pump body is mounted in the pump head cavity. The novel straightway oil feeding pump is characterized by further comprising a pressure bypass valve, the inner wall of the pump shell protrudes inwards to form a retaininig ring between the oil inlet cavity and the oil outlet cavity, the pressure bypass valve comprises a spool and a spring, the spring is sleeved on the spool, a first end of the spool is arranged in the oil inlet cavity, and the spring is compressed between an end face of the stopping ring adjacent to the oil outlet cavity and a second end of the spool. Since the pressure bypass valve is embedded in the novel straightway oil feeding pump, the bypass valve can be switched on so as to protect a rotor and a motor from being damaged when the pressure exceeds an allowable value.
Description
Technical field
The utility model relates to a kind of gasoline pump, relates in particular to a kind of direct current gasoline pump.
Background technique
The oil suction chamber of existing direct current gasoline pump and go out between the oil pocket to communicate with each other, even under normal pressure, oil also may be back to oil suction chamber by going out oil pocket, and some impurity particles are carried in oil return probably, like this, can damage the rotor of the pump housing, when the motion of rotor was obstructed, motor just was easy to burn out.Therefore, there is the short problem in working life of the pump housing in existing direct current gasoline pump.
The model utility content
The purpose of this utility model is in order to address the above problem, a kind of Novel DC gasoline pump that prevents that under normal pressure oil from refluxing to be provided.
The technical solution adopted in the utility model is: a kind of Novel DC gasoline pump, comprise pump case, have pump head chamber, oil suction chamber in the described pump case and go out oil pocket that described pump head chamber communicates with oil suction chamber by oil inlet hole, communicate with going out oil pocket by oil outlet, described pump head is equipped with the pump housing in the chamber; Described Novel DC gasoline pump also is provided with a pressure bypass valve, and the inwall of described pump case is at oil suction chamber and go out on the position between the oil pocket to projecting inward formation baffle ring; Described pressure bypass valve comprises a spool and a spring, and described spring housing is at spool; First termination of described spool is arranged in oil suction chamber, and described length of spring compressed goes out between second termination of the end face of oil pocket and spool in the adjacency of baffle ring.
Preferably, described spool comprises described first termination and second termination, and the valve rod that is connected first and second terminations, and described valve rod is provided with a plurality of fins that are separated from each other.
Preferably, described second termination is provided with the breach of fuel feeding circulation.
The beneficial effects of the utility model are: Novel DC gasoline pump of the present utility model is by built-in pressure bypass valve, and when pressure surpassed permitted value, bypass valve was just opened, and then protects rotor and motor can not be damaged.
Description of drawings
Fig. 1 is the stereogram according to the utility model first embodiment's Novel DC gasoline pump;
Fig. 2 is the longitudinal sectional view of Fig. 1;
Fig. 3 is the sectional view according to the utility model second embodiment's Novel DC gasoline pump.
Embodiment
As illustrated in fig. 1 and 2, Novel DC gasoline pump of the present utility model comprises pump case 1, has pump head chamber 11, oil suction chamber 12 in the described pump case 1 and goes out oil pocket 13, and pump head chamber 11 communicates with oil suction chamber 12 by oil inlet hole 14, by oil outlet 15 with go out oil pocket 13 and communicate; In the described pump head chamber 11 pump housing (not shown) is installed, wherein, the rotor of the pump housing is arranged in this pump head chamber 11 fully, and motor is positioned at 11 outsides, pump head chamber, and motor is finished oiling in the process that drives rotor rotation.
The inwall of described pump case 1 is at oil suction chamber 12 and go out on the position between the oil pocket 13 to projecting inward formation baffle ring 16, Novel DC gasoline pump of the present utility model also is provided with a pressure bypass valve 5, this pressure bypass valve 5 comprises a spool and a spring, and this spring housing is on spool.First termination of spool is arranged in oil suction chamber 12, and under it is in closed condition, be against baffle ring 16 on the end face of oil suction chamber, this length of spring compressed goes out between second termination of the end face of oil pocket and spool in the adjacency of baffle ring 16.Like this, when pressure surpasses setting value (can obtain different setting values by selecting Young's modulus), pressure bypass valve 5 starts, and spool overcomes spring force and moves to oil suction chamber 12 directions, make first termination away from baffle ring 16, and then make oil suction chamber 12 and go out oil pocket 13 and communicate.
In addition, described spool comprises described first termination and second termination, and the valve rod that is connected first and second terminations, and described valve rod is provided with a plurality of fins that are separated from each other, and forms the passage that fuel feeding flows through between the adjacent fins.Described second termination is provided with the breach of fuel feeding circulation.
Described first termination with baffle ring 16 opposing end faces be provided with one the circle seal groove, be embedded with seal ring in the sealing groove, with when the pressure bypass valve is not opened, guarantee the sealing between first termination and the baffle ring, make oil suction chamber 12 and go out between the oil pocket 13 not communicate with each other.
As shown in Figure 3, described pump case 1 is provided with at least two filler openings that are used to connect fuel sucking pipe in the zone at oil suction chamber 12 places, and described pump case 2 is provided with at least two oil outlets that are used to connect oil outlet tube in the zone that goes out oil pocket 13 places.
In the present embodiment, this Novel DC gasoline pump is provided with two filler openings, is respectively side filler opening 21 and top filler opening 22, is provided with two oil outlets, is respectively side oil outlet 31 and top oil outlet 32.Described side filler opening 21 and side exit mouth were located on the left and right end face of pump case 1 in 31 minutes, top filler opening 22 and top oil outlet 32 all are arranged on the top of pump case 1, make that the center line of this side filler opening 21 is vertical with the center line of top filler opening 22, be preferably crossing and vertical, the center line of this side oil outlet 31 is vertical with the center line of top oil outlet, is preferably crossing and vertical.
Described side filler opening 21, top filler opening 22, side oil outlet 31 and top oil outlet 32 are provided with the internal thread of being convenient to be connected.
Being the utility model preferred embodiment only in sum, is not to be used for limiting practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (3)
1. a Novel DC gasoline pump comprises pump case, has pump head chamber, oil suction chamber in the described pump case and goes out oil pocket, and described pump head chamber communicates with oil suction chamber by oil inlet hole, communicates with going out oil pocket by oil outlet, and described pump head is equipped with the pump housing in the chamber; It is characterized in that: described Novel DC gasoline pump also is provided with a pressure bypass valve, and the inwall of described pump case is at oil suction chamber and go out on the position between the oil pocket to projecting inward formation baffle ring; Described pressure bypass valve comprises a spool and a spring, and described spring housing is at spool; First termination of described spool is arranged in oil suction chamber, and described length of spring compressed goes out between second termination of the end face of oil pocket and spool in the adjacency of baffle ring.
2. Novel DC gasoline pump according to claim 1 is characterized in that: described spool comprises described first termination and second termination, and the valve rod that is connected first and second terminations, and described valve rod is provided with a plurality of fins that are separated from each other.
3. Novel DC gasoline pump according to claim 2 is characterized in that: described second termination is provided with the breach of fuel feeding circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206687895U CN202017619U (en) | 2010-12-20 | 2010-12-20 | Novel straightway oil feeding pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206687895U CN202017619U (en) | 2010-12-20 | 2010-12-20 | Novel straightway oil feeding pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017619U true CN202017619U (en) | 2011-10-26 |
Family
ID=44811289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206687895U Expired - Fee Related CN202017619U (en) | 2010-12-20 | 2010-12-20 | Novel straightway oil feeding pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017619U (en) |
-
2010
- 2010-12-20 CN CN2010206687895U patent/CN202017619U/en not_active Expired - Fee Related
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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: 20111026 Termination date: 20121220 |