CN205423091U - Piston pump for gasoline engine - Google Patents
Piston pump for gasoline engine Download PDFInfo
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- CN205423091U CN205423091U CN201620212887.5U CN201620212887U CN205423091U CN 205423091 U CN205423091 U CN 205423091U CN 201620212887 U CN201620212887 U CN 201620212887U CN 205423091 U CN205423091 U CN 205423091U
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Abstract
The utility model belongs to the technical field of the pump, refer in particular to a piston pump for gasoline engine, include the clutch of being connected with the gasoline engine, the clutch still is connected with gearbox, gearbox's output shaft is the eccentric shaft, is connected with the plunger through the connecting rod on the eccentric shaft, in the one end of plunger stretches into the pump body, has set gradually outlet valve assembly, piston assembly at the front end of plunger, the piston assembly lies in the piston valve barrel, is provided with the limbers on the piston assembly, is provided with the inlet valve cover at the front end of piston valve barrel, and the water intaking valve setting is in the inlet valve cover, and the front end of inlet valve cover is provided with the intake chamber, the utility model discloses a box integration with the pump body and gear reducer is joined in marriage behind the clutch again to the gasoline engine to realize the lightweight of this single cylinder piston pump weight, the single cylinder piston pump gross weight that realizes at present has only 2.17KG.
Description
Technical field:
This utility model belongs to pump technical field, refers in particular to a kind of gasoline engine piston pump.
Background technology:
At present with backpack power sprayer matching used pump kind seldom, namely plunger displacement pump and sickle pump two kinds.Sickle pump is shown in owing to the low market at home of pressure seldom has；The existing double-piston pump driven by gasoline engine also exists following shortcoming:
First, oneself has gasoline engine to join single plunger pump to use plunger to be connected with power transmission shaft, and eccentric gearing shaft head drives half spoke plunger bilateral reciprocation by ball bearing, and greatly, mechanical efficiency and volumetric efficiency are the highest for contact stress；Mechanical efficiency is only about 50%；
Second, pump separates respective independence with change speed gear box, and volume is big, bears during work inconvenient；
3rd, heavier-weight, averagely at 2.5-2.7KG；Certainly, the most lightly, but owing to the most domestic engineering plastics quality exists the problems such as ageing properties, knapsack sprayer single plunger twin-tub plastic pump only has a small amount of enterprise to produce and price is 3-5 times of domestic same specification copper pump in Japan to the weight of plastic pump.
At present, the application of triplex oblique plate plunger pump is joined by domestic Ye You enterprise, a kind of forest policeman's Backpack fire extinguisher with atomization device as disclosed in patent No. CN201120434047.0.But the problem power existed does not mates, mostly it is supporting for the government-invested project of fire-fighting water mists: because the modal power of backpack small gasoline engine is 0.735KW (being most common with Honda GX35), and the swash plate pump pressure joined is at 16.8MPA, flow is 8.3LPM (model is ARRMV2.2G24)；Required rated power is at 2.8KW；It may be said that do not mate and complete machine heavier-weight.
Summary of the invention:
The purpose of this utility model is to provide the gasoline engine piston pump that a kind of volume is little, lightweight, efficiency is high.
This utility model is achieved in that
A kind of gasoline engine piston pump, including the clutch being connected with gasoline engine, clutch is also connected with gear-shift mechanism, the output shaft of described gear-shift mechanism is eccentric shaft, connected by connecting rod on eccentric shaft and have plunger, one end of plunger is stretched in the pump housing, it is disposed with outlet valve assembly, piston assembly in the front end of plunger, described piston assembly is positioned at piston valve pocket, piston assembly is provided with limbers, the front end of piston valve pocket is provided with water intaking valve door pocket, and water intaking valve is arranged in water intaking valve door pocket, and the front end of water intaking valve door pocket is provided with intake chamber；
During piston rearward movement, forming negative pressure in piston valve pocket, water intaking valve is opened, and sucks liquid, and outlet valve assembly is closed, and sucks liquid and exists in piston valve pocket；When piston advances forward, water intaking valve is closed, and outlet valve assembly is opened, and the water passage that goes out that the liquid in piston valve pocket is always shaped as by the limbers in piston assembly and outlet valve enters the water-supplying chamber of the pump housing, and connecting in water-supplying chamber has water out adapter.
In above-mentioned a kind of gasoline engine piston pump, the described pump housing is additionally provided with pressure regulating valve assemblies.
In above-mentioned a kind of gasoline engine piston pump, described pressure regulating valve assemblies includes pressure regulation valve body, pressuring adjusting valve base, steel ball, latch bracket, pressure spring and pressure regulation valve rod it is disposed with in pressure regulator valve body, pressure regulation valve rod connects regulating hand wheel of pressure, connecting on pressure regulation valve body and have backwater joint, described pressuring adjusting valve base connects water-supplying chamber.
In above-mentioned a kind of gasoline engine piston pump, one end of the described pump housing is connected with the casing of gear-shift mechanism, the other end is connected with piston valve pocket, piston valve pocket is connected with water intaking valve door pocket, and water intaking valve door pocket is connected with intake chamber, is connected by studs between intake chamber with the pump housing, casing.
In above-mentioned a kind of gasoline engine piston pump, the front end of described plunger is axially arranged blind hole, and outlet valve assembly is arranged in blind hole.
In above-mentioned a kind of gasoline engine piston pump, described outlet valve assembly includes being positioned at blind hole diapire latch bracket, and one end of piston spring holds out against on valve block, the other end holds out against on latch bracket, and valve block contacts connection with piston assembly.
In above-mentioned a kind of gasoline engine piston pump, described piston assembly includes piston head, piston head is axially provided with limbers, one end of described piston head is stretched in the blind hole of plunger, and this end of piston head contacts connection with the valve block of outlet valve assembly, outside the front end of piston head and plunger, it is set with rubber piston.
In above-mentioned a kind of gasoline engine piston pump, the front end of described plunger is provided with the apopore of several connection blind holes and water-supplying chamber.
In above-mentioned a kind of gasoline engine piston pump, the described pump housing is provided with paper washer with the junction of piston valve pocket.
In above-mentioned a kind of gasoline engine piston pump, described piston valve pocket is provided with sealing ring with the junction of water intaking valve door pocket.
The advantage that this utility model highlights compared to existing technology is:
1, again by the casing integration of the pump housing and gear reduction unit after clutch joined by gasoline engine of the present utility model, thus the lightweight of this single cylinder piston pump weight is realized；The single cylinder piston pump gross weight realized at present only has 2.17KG.
2, this utility model only one of which cylinder, single plunger, industry slang is also pump, and for reducing the weight and volume of complete machine, outlet valve assembly is located at the inside of plunger, has several uniform apopores and can be locked in water-supplying chamber with the water that will pass through piston on plunger；Such structure can also ensure the self-priming performance of pump, up to 700mmHg；Piston pump volumetric efficiency is high, and typically up to more than 90%, exceed nearly 20% than for the most conventional single plunger duplex plunger pump average volume efficiency 70%；And flow and pressure also can reach the performance of duplex plunger pump.
3, this utility model is arranged plunger actuation piston also realizes having press water penetrate through outlet valve by pressure regulating valve assemblies, and the water overflowed when can realize overvoltage returns to outside pump the safety with guarantee pump by return pipe.
Accompanying drawing illustrates:
Fig. 1 is schematic perspective view of the present utility model；
Fig. 2 is front view of the present utility model；
Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the B-B sectional view of Fig. 2.
In figure, 1, clutch；2, gear-shift mechanism；3, driving gear；4, driven gear；5, eccentric shaft；6, connecting rod；7, plunger；8, the pump housing；9, outlet valve assembly；10, piston assembly；11, piston valve pocket；12, water intaking valve door pocket；13, water intaking valve；14, intake chamber；15, limbers；16, water out adapter；17, pressure regulating valve assemblies；18, pressure regulation valve body；19, regulating hand wheel of pressure；20, backwater joint；21, casing；22, studs；23, blind hole；24, latch bracket；25, piston spring；26, valve block；27, piston head；28, piston；29, apopore.
Detailed description of the invention:
With specific embodiment, this utility model is further described below, sees Fig. 14:
A kind of gasoline engine piston pump, including the clutch 1 being connected with gasoline engine, clutch 1 is connected with gear-shift mechanism 2, and wherein gasoline engine is Poewr transmission mechanism.One end of clutch 1 is connected with gasoline engine, and the other end connects the power transmission shaft of gear-shift mechanism 2, is provided with driving gear 3, driving gear 3 and driven gear 4 engaged transmission on power transmission shaft.Driven gear 4 is arranged on output shaft.Described output shaft is eccentric shaft 5, connected by connecting rod 6 on eccentric shaft 5 and have plunger 7, one end of plunger 7 is stretched in the pump housing 8, outlet valve assembly 9, piston assembly 10 it is disposed with in the front end of plunger 7, described piston assembly 10 is positioned at piston valve pocket 11, piston assembly 10 is provided with limbers 15, the front end of piston valve pocket 11 is provided with water intaking valve door pocket 12, water intaking valve 13 is arranged in water intaking valve door pocket 12, the front end of water intaking valve door pocket 12 is provided with intake chamber 14, described piston assembly 10 and plunger 7 synchronization action.
During piston assembly 10 rearward movement, forming negative pressure in piston valve pocket 11, water intaking valve 13 is opened, and sucks liquid, and outlet valve assembly 9 is closed, and sucks liquid and exists in piston valve pocket 11；When piston assembly 10 travels forward, water intaking valve 13 is closed, outlet valve assembly 9 is opened, and the water passage that goes out that the liquid in piston valve pocket 11 is formed by the limbers 15 in piston assembly 10 and outlet valve assembly 9 enters the water-supplying chamber of the pump housing 8, and connecting in water-supplying chamber has water out adapter 16.
The described pump housing 8 is additionally provided with pressure regulating valve assemblies 17.Described pressure regulating valve assemblies 17 includes pressure regulation valve body 18, pressuring adjusting valve base, steel ball, latch bracket, pressure spring and pressure regulation valve rod it is disposed with in pressure regulation valve body 18, pressure regulation valve rod connects regulating hand wheel of pressure 19, and connecting on pressure regulation valve body 18 has backwater joint 20, and described pressuring adjusting valve base connects water-supplying chamber.Plunger 7 drives piston assembly 10 and realizes having press water to penetrate through outlet valve assembly 9 by pressure regulating valve assemblies 17, and the water overflowed when can realize overvoltage is returned to outside pump by return pipe to ensure the safety of pump.Air chamber can also be filled on pressuring adjusting valve base be used to play voltage stabilizing.
When hand Screw regulating hand wheel of pressure 19, force pressure spring to compress, increase system pressure, otherwise then reduce system pressure.When the pressure in water-supplying chamber is more than default pressure, when i.e. the pressure in water-supplying chamber exceedes the rated pressure that spring sets pressure i.e. pump, forcing steel ball to be displaced outwardly, open valve port, liquid sprays from backwater joint；When the pressure in water-supplying chamber is less than system pressure, steel ball is closed with pressuring adjusting valve base automatically, and liquid will not overflow.
One end of the above-mentioned pump housing 8 is connected with the casing 21 of gear-shift mechanism 2, the other end is connected with piston valve pocket 11, piston valve pocket 11 is connected with water intaking valve door pocket 12, water intaking valve door pocket 12 is connected with intake chamber 14, is connected by studs 22 between intake chamber 14 with the pump housing 8, casing 21.
The front end of above-mentioned plunger 7 is axially arranged blind hole 23, and outlet valve assembly 9 is arranged in blind hole 23.
Described outlet valve assembly 9 includes being positioned at blind hole diapire latch bracket 24, and one end of piston spring 25 holds out against on valve block 26, the other end holds out against on latch bracket 24, and valve block 26 contacts connection with piston assembly 10.
Above-mentioned piston assembly 10 includes piston head 27, piston head 27 is axially provided with limbers 15, one end of described piston head 27 is stretched in the blind hole 23 of plunger 7, and this end of piston head 27 contacts connection with the valve block 26 of outlet valve assembly 9, piston 28 it is set with outside the front end of piston head 27 and plunger 7, piston 28 uses rubber piston, it is achieved piston assembly 10 is connected with the fixing of plunger 7.
The front end of above-mentioned plunger 7 is provided with the apopore 29 of several connection blind holes 23 and water-supplying chamber.The present embodiment is provided with four.
In order to improve the sealing of connection, the junction of the described pump housing 8 with piston valve pocket 11 is provided with paper washer.
In order to prevent leaking, the junction of described piston valve pocket 11 with water intaking valve door pocket 12 is provided with sealing ring.
Operation principle of the present utility model:
This utility model uses small gasoline engine as driving source, clutch driven disc connects gasoline engine and gear-shift mechanism, be used for separate or engage before and after between the two power contact, i.e. when gasoline engine throttle accelerates beyond clutch rotating speed, the clutch block that rises is opened, and by driven disc, gasoline engine torque is delivered to gear-shift mechanism 2；When throttle idling, clutch rise block stall close, the back of the body disk detachment operating, gear-shift mechanism 2 quits work.Driving gear 3 on eccentric shaft 5 drives eccentric shaft 5 to rotate, and is adjusted the flow of pump by the eccentric throw size of eccentric shaft 5 and plunger 7, the reciprocal linear velocity of piston 10, thus the flow of this pump and pressure are unrelated, only and power rotating speed positive correlation.
The straight reciprocating motion of plunger 7 makes the swept volume of piston valve pocket 11 produce cyclically-varying, thus produce negative pressure or malleation, under the effect of water intaking valve 13, during negative pressure, outside liquid is automatically drawn into piston valve pocket 11, during malleation, water intaking valve 13 is closed, and makes the pressure of liquid be continuously increased and pass through outlet valve assembly 9 to penetrate through injecting-unit；After exceeding the operating pressure of setting, water pressure can back down the steel ball of pressure regulating valve assemblies 9, spring, and pressure regulation valve port is opened, and liquid flows out to bucket from backwater joint 16.
Above-described embodiment is only one of preferred embodiment of the present utility model, not limits practical range of the present utility model with this, therefore: all equivalence changes done according to shape of the present utility model, structure, principle, within protection domain of the present utility model all should be covered by.
Claims (10)
1. a gasoline engine piston pump, including the clutch being connected with gasoline engine, clutch is also connected with gear-shift mechanism, the output shaft of described gear-shift mechanism is eccentric shaft, connected by connecting rod on eccentric shaft and have plunger, one end of plunger is stretched in the pump housing, it is characterized in that: be disposed with outlet valve assembly in the front end of plunger, piston assembly, described piston assembly is positioned at piston valve pocket, piston assembly is provided with limbers, the front end of piston valve pocket is provided with water intaking valve door pocket, water intaking valve is arranged in water intaking valve door pocket, the front end of water intaking valve door pocket is provided with intake chamber；
During piston assembly rearward movement, forming negative pressure in piston valve pocket, water intaking valve is opened, and sucks liquid, and outlet valve assembly is closed, and sucks liquid and exists in piston valve pocket；When piston assembly travels forward, water intaking valve is closed, and outlet valve assembly is opened, and the water passage that goes out that the liquid in piston valve pocket is always shaped as by the limbers in piston assembly and outlet valve enters the water-supplying chamber of the pump housing, and connecting in water-supplying chamber has water out adapter.
A kind of gasoline engine piston pump the most according to claim 1, it is characterised in that: it is additionally provided with pressure regulating valve assemblies on the described pump housing.
A kind of gasoline engine piston pump the most according to claim 2, it is characterized in that: described pressure regulating valve assemblies includes pressure regulation valve body, pressuring adjusting valve base, steel ball, latch bracket, pressure spring and pressure regulation valve rod it is disposed with in pressure regulator valve body, pressure regulation valve rod connects regulating hand wheel of pressure, connecting on pressure regulation valve body and have backwater joint, described pressuring adjusting valve base connects water-supplying chamber.
A kind of gasoline engine piston pump the most according to claim 1, it is characterized in that: one end of the described pump housing is connected with the casing of gear-shift mechanism, the other end is connected with piston valve pocket, piston valve pocket is connected with water intaking valve door pocket, water intaking valve door pocket is connected with intake chamber, is connected by studs between intake chamber with the pump housing, casing.
A kind of gasoline engine piston pump the most according to claim 1, it is characterised in that: the front end of described plunger is axially arranged blind hole, and outlet valve assembly is arranged in blind hole.
A kind of gasoline engine piston pump the most according to claim 5, it is characterized in that: described outlet valve assembly includes being positioned at blind hole diapire latch bracket, one end of piston spring holds out against on valve block, the other end holds out against on latch bracket, and valve block contacts connection with piston assembly.
A kind of gasoline engine piston pump the most according to claim 6, it is characterized in that: described piston assembly includes piston head, piston head is axially provided with limbers, one end of described piston head is stretched in the blind hole of plunger, and this end of piston head contacts connection with the valve block of outlet valve assembly, outside the front end of piston head and plunger, it is set with piston.
A kind of gasoline engine piston pump the most according to claim 6, it is characterised in that: the front end of described plunger is provided with the apopore of several connection blind holes and water-supplying chamber.
A kind of gasoline engine piston pump the most according to claim 1, it is characterised in that: the described pump housing is provided with paper washer with the junction of piston valve pocket.
A kind of gasoline engine piston pump the most according to claim 1, it is characterised in that: described piston valve pocket is provided with sealing ring with the junction of water intaking valve door pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620212887.5U CN205423091U (en) | 2016-03-18 | 2016-03-18 | Piston pump for gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620212887.5U CN205423091U (en) | 2016-03-18 | 2016-03-18 | Piston pump for gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423091U true CN205423091U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620212887.5U Active CN205423091U (en) | 2016-03-18 | 2016-03-18 | Piston pump for gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423091U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604817A (en) * | 2016-03-18 | 2016-05-25 | 富士特有限公司 | Piston pump for gasoline engine |
| CN109779872A (en) * | 2019-03-06 | 2019-05-21 | 浙江森友环保成套设备有限公司 | A kind of big flow filter press feed pump |
-
2016
- 2016-03-18 CN CN201620212887.5U patent/CN205423091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604817A (en) * | 2016-03-18 | 2016-05-25 | 富士特有限公司 | Piston pump for gasoline engine |
| CN109779872A (en) * | 2019-03-06 | 2019-05-21 | 浙江森友环保成套设备有限公司 | A kind of big flow filter press feed pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Piston pump for gasoline engine Effective date of registration: 20180517 Granted publication date: 20160803 Pledgee: Agricultural Bank of China, Limited by Share Ltd, Taizhou Luqiao branch Pledgor: China FST Co., Ltd. Registration number: 2018330000111 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210728 Granted publication date: 20160803 Pledgee: Agricultural Bank of China Limited by Share Ltd. Taizhou Luqiao branch Pledgor: CHINA FST Co.,Ltd. Registration number: 2018330000111 |