CN203925996U - Vacuum gear pump - Google Patents
Vacuum gear pump Download PDFInfo
- Publication number
- CN203925996U CN203925996U CN201420251527.7U CN201420251527U CN203925996U CN 203925996 U CN203925996 U CN 203925996U CN 201420251527 U CN201420251527 U CN 201420251527U CN 203925996 U CN203925996 U CN 203925996U
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- China
- Prior art keywords
- gear
- main shaft
- vacuum
- protecgulum
- liquid
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Abstract
The utility model belongs to gear pump technical field, be particularly related to a kind of vacuum gear pump, comprise the pump housing, the first main shaft, the second main shaft, liquid entering hole, liquid outlet, and intermeshing the first gear and the second gear, the inside of the pump housing is provided with inner chamber, the first gear and the second gear are all arranged in inner chamber, and liquid entering hole and liquid outlet are all communicated with inner chamber, the first main shaft and the second main shaft are arranged in respectively in the first gear and the second gear, and the second main shaft is positioned at the pump housing, one end of the first main shaft is protruding from the inside of the pump housing.With respect to prior art, when the tooth of intermeshing the first gear of the present utility model and the second gear separates each other gradually, seal operation volume increases gradually, forms the imbibition chamber with partial vacuum, make liquid under the effect of external atmospheric pressure, suck imbibition chamber, and be brought into hyperbaric chamber; Pressured fluid in hyperbaric chamber acts on the first gear and the second gear, the volume in hyperbaric chamber is reduced, and then liquid is exported from liquid outlet.
Description
Technical field
The utility model belongs to gear pump technical field, particularly a kind of vacuum gear pump.
Background technique
Pump is the machinery of carrying liquid or making liquid supercharging, and it sends the mechanical energy of prime mover or other external energies to liquid, and liquid energy is increased.Pump can be divided into positive displacement pump, driving type pump and other types pump three classes by working principle conventionally.Wherein, positive displacement pump is to lean on the motion of workpiece to cause swept volume periodically increase and dwindle and suction liquid, and by the extruding of workpiece, directly make the pressure energy of liquid increase, according to the difference of moving element structure, positive displacement pump can be divided into reciprocating pump, plunger pump, screw pump, vane pump and water ring pump again.
But pump of the prior art generally can not be used for the liquid of transfer of highly viscous and high suction depth, or there is the liquid of negative pressure state, because it easily occurs that oil suction is not enough or inhale the phenomenon not oiling, also can produce cavitation phenomenons.
Therefore, necessaryly provide a kind of vacuum gear pump, it can be used in the liquid of transfer of highly viscous and high suction depth, or has the liquid of negative pressure state, and simple in structure, easy disassembling.
Model utility content
The purpose of this utility model is: for the deficiencies in the prior art, and provide a kind of vacuum gear pump, it can be used in the liquid of transfer of highly viscous and high suction depth, or has the liquid of negative pressure state, and simple in structure, easy disassembling.
To achieve these goals, the utility model adopts following technological scheme:
Vacuum gear pump, comprise the pump housing, the first main shaft, the second main shaft, liquid entering hole, liquid outlet, and intermeshing the first gear and the second gear, the inside of the described pump housing is provided with inner chamber, described the first gear and described the second gear are all arranged in described inner chamber, and described liquid entering hole and described liquid outlet are all communicated with described inner chamber, described the first main shaft and described the second main shaft are arranged in respectively in described the first gear and described the second gear, and described the second main shaft is positioned at the described pump housing, one end of described the first main shaft is protruding from the inside of the described pump housing.The first main shaft is connected with external motor.
As a kind of improvement of the utility model vacuum gear pump, the described pump housing comprises protecgulum, bonnet and sealing cover, and described protecgulum and described bonnet complement each other to form described inner chamber, and described sealing cover is bolted to connection the outside in described protecgulum.
As a kind of improvement of the utility model vacuum gear pump, described protecgulum and described bonnet are fixing by screw and/or pin.
As a kind of improvement of the utility model vacuum gear pump, between described protecgulum and described bonnet, be provided with pad.
A kind of improvement as the utility model vacuum gear pump, one end of described the first main shaft is successively through stretching out after described protecgulum and described sealing cover, and the extension of described the first main shaft is arranged with seal ring and sealed screw, and described seal ring is close to the outer surface of described protecgulum by the pressuring action of described sealed screw.
As a kind of improvement of the utility model vacuum gear pump, on the position at the two ends that are positioned at described the first gear of described the first main shaft, be all arranged with outside back-up ring; On the position at the two ends that are positioned at described the second gear of described the second main shaft, be all arranged with outside back-up ring.
As a kind of improvement of the utility model vacuum gear pump, the material of described seal ring is teflon, silicone rubber, nitrile butadiene rubber, ethylene propylene diene rubber or neoprene.
As a kind of improvement of the utility model vacuum gear pump, the material of described pad is teflon, silicone rubber, nitrile butadiene rubber, ethylene propylene diene rubber or neoprene.
With respect to prior art, when the tooth of intermeshing the first gear of the present utility model and the second gear separates each other gradually, seal operation volume increases gradually, formation has the imbibition chamber of partial vacuum, make liquid through liquid entering hole, suck imbibition chamber under the effect of external atmospheric pressure, and the Seal cage being formed by the inwall of between cog, the pump housing is with walking around the first gear and the second gear, then enters hyperbaric chamber; Pressured fluid in hyperbaric chamber acts on the first gear and the second gear, produce unbalanced force, tooth between the first gear and the second gear is meshed gradually, the volume in hyperbaric chamber is reduced, and then liquid is extruded and is transported to pressure piping from liquid outlet.
When needing the liquid of transfer of highly viscous and high suction depth, or while thering is the liquid of negative pressure state, only need to be by for driving the speed of the external motor that the first main shaft rotates to improve, can in imbibition chamber, form lower vacuum, make liquid to be sucked rapidly inner chamber, then via imbibition chamber and hyperbaric chamber, from the pump housing, discharge.
In addition, vacuum gear pump of the present utility model also has following characteristics:
The first, vacuum gear pump of the present utility model is to carry out the conveying to liquid according to physical vacuum principle, and it is applicable to carry any liquid.
Second, when for delivery of this special liquid of glue, if just easily solidify because glue exposes to reach about 1 hour in air, use vacuum gear pump just cannot carry out again work, now just need to dismantle and cleaning process vacuum gear pump, because the utility model is simple in structure, dismantle and install very convenient, general needs within 2 ~ 5 minutes, just can realize dismounting, fast 10 ~ 20 times of more general gear pump, and easy to clean.
The 3rd, vacuum gear pump of the present utility model can be worked in any environment, and can regulate the degree of vacuum in the inner chamber of the pump housing by the speed of debugging motor.
The 4th, vacuum gear pump of the present utility model can be widely used in automated machine equipment, as coiling machine, CNC lathe, CNC milling machine, slow wire feeding working machine tool, glue and glue wrapping machine etc.
The 5th, the vacuum gear pump bodily form of the present utility model is small, and weight is 1 ~ 2KG approximately, if be contained in machinery, can not cause large impact to the body weight of equipment own.
Accompanying drawing explanation
Below in conjunction with specification drawings and specific embodiments, the utility model and useful technique effect thereof are elaborated, wherein:
Fig. 1 is one of sectional view of the present utility model.
Fig. 2 is two of sectional view of the present utility model.
Fig. 3 is fundamental diagram of the present utility model.
Wherein, the 1-pump housing, 2-the first main shaft, 3-the second main shaft, 5-liquid entering hole, 6-liquid outlet, 7-the first gear, 8-the second gear, 9-inner chamber, 11-protecgulum, 12-bonnet, 13-sealing cover, 14-bolt, 15-screw or pin, 16-pad, 17-seal ring, 18-sealed screw, the outside back-up ring of 19-, 20-imbibition chamber, 21-hyperbaric chamber.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail, but mode of execution of the present utility model is not limited to this.
As illustrated in fig. 1 and 2, the vacuum gear pump that the utility model provides, comprise the pump housing 1, the first main shaft 2, the second main shaft 3, liquid entering hole 5, liquid outlet 6, and intermeshing the first gear 7 and the second gear 8, the inside of the pump housing 1 is provided with inner chamber 9, the first gear 7 and the second gear 8 are all arranged in inner chamber 9, and liquid entering hole 5 and liquid outlet 6 are all communicated with inner chamber 9, the first main shaft 2 and the second main shaft 3 are arranged in respectively in the first gear 8 and the second gear 9, and it is protruding from the inside of the pump housing 1 that the second main shaft 3 is positioned at one end of the pump housing 1, the first main shaft 2.
Wherein, the pump housing 1 comprises protecgulum 11, bonnet 12 and sealing cover 13, and protecgulum 11 and bonnet 12 complement each other to form inner chamber 9, and sealing cover 13 is fixedly connected on the outside of protecgulum 11 by bolt 14.
Protecgulum 11 and bonnet 12 are fixing by screw and/or pin 15, are convenient to installation and removal.
Between protecgulum 11 and bonnet 12, be provided with pad 16, the sealing being connected with bonnet 12 to improve protecgulum 11, stops air to enter from the gap between protecgulum 11 and bonnet 12.
One end of the first main shaft 2 is successively through stretching out after protecgulum 11 and sealing cover 13, and the extension of the first main shaft 2 is arranged with seal ring 17 and sealed screw 18, and seal ring 17 is close to the outer surface of protecgulum 11 by the pressuring action of sealed screw 18 through sealing cover 13, thereby the position that on protecgulum 11, the first main shaft 2 stretches out is sealed, stop entering of air.
On the position at the two ends that are positioned at the first gear 7 of the first main shaft 2, be all arranged with outside back-up ring 19; On the position at the two ends that are positioned at the second gear 8 of the second main shaft 3, be all arranged with outside back-up ring 19, to prevent that liquid from entering the gap forming between the first main shaft 2 and the first gear 7, and the gap forming between the second main shaft 3 and the second gear 8.
The material of seal ring 17 is teflon, silicone rubber, nitrile butadiene rubber, ethylene propylene diene rubber or neoprene, the seal ring 17 of these materials not only has good pliability, but also has good anticorrosive property, weatherability, ozone resistance and chemical resistance.
The material of pad 16 is teflon, silicone rubber, nitrile butadiene rubber, ethylene propylene diene rubber or neoprene.The pad 16 of these materials not only has good pliability, but also has good anticorrosive property, weatherability, ozone resistance and chemical resistance.
Working principle of the present utility model as shown in Figure 3, first start the motor (not shown) being connected with the first main shaft 2, driven by motor the first main shaft 2 rotates, and then drive the first gear 7 to rotate, the rotation of the first gear 7 is rotated with it the second gear 8 simultaneously, when the tooth of intermeshing the first gear 7 and the second gear 8 separates each other gradually, seal operation volume increases gradually, formation has the imbibition chamber 20 of partial vacuum, make liquid through liquid entering hole 5, suck imbibition chamber 20 under the effect of external atmospheric pressure, and the Seal cage being formed by the inwall of between cog and the pump housing 1 is with walking around the first gear 7 and the second gear 8, then enter hyperbaric chamber 21, suction chamber 20 is to lean on the line of contact of two gears to separate with hyperbaric chamber 21, pressured fluid in hyperbaric chamber 21 acts on the first gear 7 and the second gear 8, produce unbalanced force, tooth between the first gear 7 and the second gear 5 is meshed gradually, the volume in hyperbaric chamber 21 is reduced, and then liquid is extruded and is transported to pressure piping from liquid outlet 6.
During assembling, first the first gear 7 and the second gear 8 are worn respectively and be fixed on the first main shaft 2 and the second main shaft 3, then sheathed outside back-up ring 19 on the position at the two ends that are positioned at the first gear 7 of the first main shaft 2, sheathed outside back-up ring 19 on the position at the two ends that are positioned at the second gear 8 of the second main shaft 3, then the first main shaft 2 and the second main shaft 3 are all placed in inner chamber 9, and one end of the first main shaft 2 is stretched out from protecgulum 11 and sealing cover 13 successively, and sealing cover 13 is fixedly connected on to the outside of protecgulum 11 with bolt 14; Then between protecgulum 11 and bonnet 12, place pad 16, then with screw and/or pin 15, protecgulum 11 and bonnet 12 are fixed; Then, by the pressuring action of sealed screw 18, seal ring 17 is close to the outer surface of protecgulum 11 through sealing cover 13, is completed assembling of the present utility model, assembling process is simple, consuming time few.
During dismounting, first unscrew sealed screw 18, make seal ring 17 depart from outer surface and the sealing cover 13 of protecgulum 11, then looser a bolt 14, sealing cover 13 is taken off, then unscrew again screw and/or pin 15, make protecgulum 11 separated with bonnet 12, thereby can take out the first main shaft 2 that is fixed with the first gear 7 and the second main shaft 3 that is fixed with the second gear 8, then take off outside back-up ring 19, just the first gear 7 and the second gear 8 can be taken off from the first main shaft 2 and the second main shaft 3 respectively, and then the first gear 7 and the second gear 8 are cleaned etc. to effect, dismantle very convenient.
When needing the liquid of transfer of highly viscous and high suction depth, or while thering is the liquid of negative pressure state, only need to be by for driving the speed of the motor that the first main shaft 2 rotates to improve, can be in the lower vacuum of the interior formation in imbibition chamber 20, make liquid to be sucked rapidly inner chamber 9, then via imbibition chamber 20 and hyperbaric chamber 21, from the pump housing 1, discharge, therefore, the utlity model has Applicable scope very widely.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also change and revise above-mentioned mode of execution.Therefore, the utility model is not limited to embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection domain of claim of the present utility model.In addition,, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (8)
1. vacuum gear pump, it is characterized in that: comprise the pump housing, the first main shaft, the second main shaft, liquid entering hole, liquid outlet, and intermeshing the first gear and the second gear, the inside of the described pump housing is provided with inner chamber, described the first gear and described the second gear are all arranged in described inner chamber, and described liquid entering hole and described liquid outlet are all communicated with described inner chamber, described the first main shaft and described the second main shaft are arranged in respectively in described the first gear and described the second gear, and described the second main shaft is positioned at the described pump housing, one end of described the first main shaft is protruding from the inside of the described pump housing.
2. vacuum gear pump according to claim 1, is characterized in that: the described pump housing comprises protecgulum, bonnet and sealing cover, and described protecgulum and described bonnet complement each other to form described inner chamber, and described sealing cover is bolted to connection the outside in described protecgulum.
3. vacuum gear pump according to claim 2, is characterized in that: described protecgulum and described bonnet are fixing by screw and/or pin.
4. according to the vacuum gear pump described in claim 2 or 3, it is characterized in that: between described protecgulum and described bonnet, be provided with pad.
5. vacuum gear pump according to claim 4, it is characterized in that: one end of described the first main shaft is successively through stretching out after described protecgulum and described sealing cover, and the extension of described the first main shaft is arranged with seal ring and sealed screw, and described seal ring is close to the outer surface of described protecgulum by the pressuring action of described sealed screw.
6. vacuum gear pump according to claim 1, is characterized in that: on the position at the two ends that are positioned at described the first gear of described the first main shaft, be all arranged with outside back-up ring; On the position at the two ends that are positioned at described the second gear of described the second main shaft, be all arranged with outside back-up ring.
7. vacuum gear pump according to claim 5, is characterized in that: the material of described seal ring is teflon, silicone rubber, nitrile butadiene rubber, ethylene propylene diene rubber or neoprene.
8. vacuum gear pump according to claim 4, is characterized in that: the material of described pad is teflon, silicone rubber, nitrile butadiene rubber, ethylene propylene diene rubber or neoprene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251527.7U CN203925996U (en) | 2014-05-16 | 2014-05-16 | Vacuum gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420251527.7U CN203925996U (en) | 2014-05-16 | 2014-05-16 | Vacuum gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925996U true CN203925996U (en) | 2014-11-05 |
Family
ID=51821816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420251527.7U Expired - Fee Related CN203925996U (en) | 2014-05-16 | 2014-05-16 | Vacuum gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203925996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090017A (en) * | 2014-05-16 | 2015-11-25 | 邱称平 | Vacuum gear pump |
-
2014
- 2014-05-16 CN CN201420251527.7U patent/CN203925996U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090017A (en) * | 2014-05-16 | 2015-11-25 | 邱称平 | Vacuum gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150516 |
|
| EXPY | Termination of patent right or utility model |