CN2665409Y - Gear type asphalt pump - Google Patents
Gear type asphalt pump Download PDFInfo
- Publication number
- CN2665409Y CN2665409Y CN 200320121195 CN200320121195U CN2665409Y CN 2665409 Y CN2665409 Y CN 2665409Y CN 200320121195 CN200320121195 CN 200320121195 CN 200320121195 U CN200320121195 U CN 200320121195U CN 2665409 Y CN2665409 Y CN 2665409Y
- Authority
- CN
- China
- Prior art keywords
- gear
- bitumenpump
- gear type
- pump
- pressure cavity
- 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 relates to a gear-type asphalt pump, comprising a rotary gear pump. The utility model is characterized in that a side passage is arranged between an inlet passage and an outlet passage of the gear pump body, and a perfect overflow valve. The utility model works safely and reliably, favorable for use by a consumer.
Description
Affiliated technical field
The utility model relates to a kind of gear type bitumenpump.
Background technique
Though at present existing many kinds are used to carry pitch class heat of condensation to melt the bitumenpump device of fluid, but ubiquity some problems: the one, and pump temperature after shutdown descends, the liquid that remains in the pump housing solidifies, when pump starts once more, electric motor starting moment is increased, and adopt naked light heating or electric heating, because that the pump housing is heated is inhomogeneous, thereby hinder the normal operation of pump; The 2nd, during pump work continuous rotation by gear, make the volume in the pump housing constantly change generation pressure, thereby reach the purpose of carrying liquid, sealing between the gear shaft and the pump housing causes very big influence for the leakage rate of liquid at this moment, the most of asbestos yarn that adopts of existing bitumenpump seals, sealing effect is undesirable, and when adopting General Purpose Rubber to seal, can't bear the high-temperature work environment of bitumenpump again.
Summary of the invention
The purpose of this utility model is to provide a kind of gear type bitumenpump, and this device is safe and reliable, helps the user and uses.
The utility model is to constitute like this, and it comprises rotary gear pump, it is characterized in that: be provided with the by-pass between the import and export passage of gear pump body, the by-pass is provided with safety overflow valve.
Than existing bitumenpump, the utility model makes work more safe and reliable owing to set up safety overflow valve on the by-pass that is provided with between the import and export passage of gear pump body, helps the user and uses.
Description of drawings
Fig. 1 is the utility model embodiment organigram.
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
The utility model embodiment comprises rotary gear pump 1, it is characterized in that: be provided with the by-pass between the import and export passage of gear pump body, the by-pass is provided with safety overflow valve 3.
Oil pressure relief and pressure unloading when working for the ease of regulating the pump housing, safe and reliable to guarantee it, the hyperbaric chamber 4 of above-mentioned safety overflow valve communicates with the gear delivery side of pump, and low-pressure cavity 5 communicates with the import of gear pump; Be provided with in the described low-pressure cavity and open and close spool 6, an end of this keying spool withstands on hyperbaric chamber and leads on the off-load mouth 7 of low-pressure cavity, and the spring 8 of the other end in being located at low-pressure cavity regulated control by the threaded adjusting bar of being located on the valve body lateral part 9; The outer end of described hyperbaric chamber is provided with tapped hole 10, placed adjusting screw rod 11 in the tapped hole, one end of this adjusting screw rod stretches into and is used in the hyperbaric chamber promote opening and closing spool to the low-pressure cavity direction, the other end be located at the external adjusting handle of safety overflow valve 12 and link.
During work, regulate the pressure that the keying spool withstands on the off-load mouth by the threaded adjusting bar of adjusting the spring outboard end, thereby the control oil pressure relief, when with hyperbaric chamber that the gear delivery side of pump communicates in pressure when too high, highly pressurised liquid just backs down and opens and closes spool and flow in the low-pressure cavity.When bitumenpump carries the work of liquid to finish, make adjusting screw rod back down the keying spool by the rotation adjusting handle, make hyperbaric chamber and low-pressure cavity communicate, gear shaft rotates, but conveyance fluid not.
In order to improve the sealability of the pump housing, reduce leak of liquid, above-mentioned gear pump body is provided with specific rubber outside framework oil seal device 15 at its gear shaft external part 14 with pump housing connection place.During concrete the utilization, this specific rubber outside framework oil seal device can adopt the fluorine rubber outside framework oil seal.
In addition,, each parts of the pump housing are heated evenly, guarantee its reliable operation, on gear pump body, be provided with heating equipment 2 for the ease of the pump housing is heated.
During concrete processing and fabricating, be provided with a hot-fluid body cavity 13 in the above-mentioned heating equipment, this heating equipment can be located on the perimembranous of safety overflow valve valve body, also can be located on the perimembranous of the pump housing.Can utilize the heat that adds heated bitumen to add warmed fluid simultaneously during work, be transported to then in the hot-fluid body cavity, reach the purpose of the heating pump housing by conduction of heat.By hot-fluid heating device the pump housing is carried out the heating of temperature fire; can make pump housing each several part be heated evenly; avoided on the one hand solidifying the obstruction influence that running produces to the pump housing because of shutting down the back residual liquid; improved the transmission lubrication performance on the other hand; noise is reduced; wearing and tearing alleviate, and mechanical efficiency improves.
The utility model is reasonable in design, and using effect is good, has certain application value.
Claims (8)
1. a gear type bitumenpump comprises rotary gear pump, it is characterized in that: be provided with the by-pass between the import and export passage of gear pump body, the by-pass is provided with safety overflow valve.
2. gear type bitumenpump according to claim 1 is characterized in that: the hyperbaric chamber of described safety overflow valve communicates with the gear delivery side of pump, and low-pressure cavity communicates with the import of gear pump; Be provided with the keying spool in the described low-pressure cavity, an end of this keying spool withstands on hyperbaric chamber and leads on the off-load mouth of low-pressure cavity, and the spring of the other end in being located at low-pressure cavity regulated control by the threaded adjusting bar of being located on the valve body lateral part; The outer end of described hyperbaric chamber is provided with tapped hole, has placed adjusting screw rod in the tapped hole, and an end of this adjusting screw rod stretches into and is used in the hyperbaric chamber promote opening and closing spool to the low-pressure cavity direction, the other end be located at the external adjusting handle of safety overflow valve and link.
3. gear type bitumenpump according to claim 1 and 2 is characterized in that: described gear pump body is provided with specific rubber outside framework oil seal device at its gear shaft external part and pump housing connection place.
4. gear type bitumenpump according to claim 1 and 2 is characterized in that: be provided with heating equipment on gear pump body.
5. gear type bitumenpump according to claim 3 is characterized in that: described specific rubber outside framework oil seal device is the fluorine rubber outside framework oil seal.
6. gear type bitumenpump according to claim 4 is characterized in that: be provided with a hot-fluid body cavity in the described heating equipment.
7. gear type bitumenpump according to claim 6 is characterized in that: described heating equipment is located on the perimembranous of safety overflow valve valve body.
8. gear type bitumenpump according to claim 6 is characterized in that: described heating equipment is located on the perimembranous of the pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121195 CN2665409Y (en) | 2003-12-04 | 2003-12-04 | Gear type asphalt pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320121195 CN2665409Y (en) | 2003-12-04 | 2003-12-04 | Gear type asphalt pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665409Y true CN2665409Y (en) | 2004-12-22 |
Family
ID=34348305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320121195 Expired - Fee Related CN2665409Y (en) | 2003-12-04 | 2003-12-04 | Gear type asphalt pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665409Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062047A (en) * | 2013-01-24 | 2013-04-24 | 成都市新筑路桥机械股份有限公司 | Asphalt gear pump |
| CN104061330A (en) * | 2014-06-25 | 2014-09-24 | 佛山高富中石油燃料沥青有限责任公司 | Framework oil seal structure of asphalt pump |
-
2003
- 2003-12-04 CN CN 200320121195 patent/CN2665409Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062047A (en) * | 2013-01-24 | 2013-04-24 | 成都市新筑路桥机械股份有限公司 | Asphalt gear pump |
| CN104061330A (en) * | 2014-06-25 | 2014-09-24 | 佛山高富中石油燃料沥青有限责任公司 | Framework oil seal structure of asphalt pump |
| CN104061330B (en) * | 2014-06-25 | 2016-04-27 | 佛山高富中石油燃料沥青有限责任公司 | A kind of outside framework oil seal structure of bitumenpump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |