CN201858145U - Valve bank reversing type gear pump - Google Patents
Valve bank reversing type gear pump Download PDFInfo
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- CN201858145U CN201858145U CN2010206006579U CN201020600657U CN201858145U CN 201858145 U CN201858145 U CN 201858145U CN 2010206006579 U CN2010206006579 U CN 2010206006579U CN 201020600657 U CN201020600657 U CN 201020600657U CN 201858145 U CN201858145 U CN 201858145U
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Abstract
The utility model discloses a valve bank reversing type gear pump consisting of a valve body (1), a pump body (2), a driving gear (3) and a driven gear (4), wherein four valves (11) are arranged in the valve body (1) and sheathed on respective valve rods (12); and the valves (11) are in conical surface matching with the valve body (1). The four valves with the same structure are integrated together through the valve body, so that the automatic reversing function of an internal flow passage can be performed when the gear pump rotates clockwise and counterclockwise, and the directions of an oil inlet and an oil outlet can be kept unchanged all the time; the opening and closing of the valves are linear movement during working, and the valves are in conical surface matching with the valve body; therefore, the valve bank reversing type gear pump has the characteristics of simple structure and good sealing property.
Description
Technical field
The utility model belongs to the gear pump field, is a kind of gear pump with clockwise and anticlockwise concretely, but that its filler opening and oil outlet remain is constant.
Background technique
The citation form of gear pump is exactly the rotations that are meshing with each other in a close-fitting housing of two measure-alike gears, and the inner classes of this housing is like the figure of eight, and two gears are contained in the inside, and the external diameter of gear and both sides and housing closely cooperate.Fluid enters in the middle of two gears from suction port, and is full of this space, along with the rotation of tooth is moved along housing, discharges when two teeth mesh at last.Gear pump also is positive displacement devices, and promptly as the piston in the cylinder barrel, when a tooth entered the fluid space of another tooth, fluid was just mechanically squeezed and ejects.Because liquid is incompressible, so fluid and tooth just can not occupy the same space at one time.
Tradition commutation type gear pump is " loose-leaf " commutation type structure, generally is made up of two inhaling valves, two extrusion valves, bearing, torsion spring, valve gap, the pump housing, driving gear and driven gears etc.Driving gear and driven gear are the figure of eight and are installed in the pump housing, and the cavity that is positioned at driving gear and driven gear one side is first cavity volume, and the cavity that is positioned at driving gear and driven gear opposite side is second cavity volume.Its working principle is: when driving gear rotates by a certain direction, form negative pressure at first cavity volume, one of them inhaling valve is opened in suction, and fluid flows to first cavity volume from filler opening, and first cavity volume becomes suction chamber, fluid is pressed to second cavity volume through driving and driven gear, because the incompressibility of liquid increases the pressure of second cavity volume, opens one of them under pressure and extrudes valve, again fluid is pressed to oil outlet, second cavity volume becomes delivery chamber; When driving gear is pressed the other direction rotation, second cavity volume has become suction chamber, another inhaling valve is opened in suction, fluid flows to second cavity volume from filler opening, press to first cavity volume through driving and driven gear again, first cavity volume has become delivery chamber, opens another and extrude valve under the first cavity volume pressure effect, again fluid is pressed to oil outlet.Adopt the gear pump of above " loose-leaf " commutation type structure, reached the gear pump clockwise and anticlockwise and do not changed the purpose of filler opening and oil outlet, but had the following disadvantages:
Switching when 1, " loose-leaf " formula change-over valve is worked is for rotatablely moving, and opening angle is limited, and valve sealing face is the plane, leaks greatly, and volumetric efficiency is low.
2, " loose-leaf " formula change-over valve structural requirement spring warping force is bigger, and the opening state during valve working needs the bigger power of additive decrementation.
3, " loose-leaf " formula change-over valve complex structure, dimensional accuracy, Geometrical Tolerance Principle height, difficulty of processing is big.
4, pump body structure complexity needs the additional runner of peripheral hardware, and volume is big, weight is big, the casting difficulty is big, difficulty of processing is big.
The model utility content
The commutation type gear pump that technical problem to be solved in the utility model is to provide a kind of simple in structure, good airproof performance, is easy to process, and gear pump its filler opening and oil outlet in the clockwise and anticlockwise process remain unchanged equally.
For solving above technical problem, a kind of valve group commutation type gear pump that the utility model provides, comprise valve body (1), the pump housing (2), the right-hand member of described valve body (1) is connected with the left end of the described pump housing (2), be equipped with in the left side of the described pump housing (2) and be driving gear (3) and the driven gear of arranging up and down (4), be provided with first pump housing cavity volume (5) and second pump housing cavity volume (6) in the described pump housing (2) left side, described valve body (1) is provided with filler opening (7) and oil outlet (8), be provided with the first valve body cavity volume (9) and the second valve body cavity volume (10) in the right side of this valve body (1), the described first valve body cavity volume (9) is communicated with described first pump housing cavity volume (5), the described second valve body cavity volume (10) is communicated with described second pump housing cavity volume (6), its key is: four valves (11) are housed in the described valve body (1), be respectively first, the second oil-feed valve (11a, 11b) with first, the second fuel-displaced valve (11c, 11d), the described first oil-feed valve (11a) is positioned between the filler opening (7) and the first valve body cavity volume (9), the described first fuel-displaced valve (11c) is positioned between the oil outlet (8) and the first valve body cavity volume (9), the described second oil-feed valve (11b) is positioned between the filler opening (7) and the second valve body cavity volume (10), the described second fuel-displaced valve (11d) is positioned between the oil outlet (8) and the second valve body cavity volume (10), described valve (11) is enclosed within on separately the valve rod (12), cooperates for conical surface between described valve (11) and the valve body (1).
Working principle of the present utility model: driving gear turn clockwise (just being assumed to changes), the drive driven gear is rotated counterclockwise, first pump housing cavity volume produces negative pressure, form suction chamber, the first oil-feed valve is opened in suction, fluid enters from filler opening, arrives first pump housing cavity volume through the first valve body cavity volume; Second pump housing cavity volume produces malleation simultaneously, forms delivery chamber, pushes the second fuel-displaced valve under pressure open, and fluid, flows out from oil outlet through the second valve body cavity volume from second pump housing cavity volume again.Driving gear is rotated counterclockwise (being assumed to counter-rotating), drives driven gear and turns clockwise, and second pump housing cavity volume produces negative pressure, form suction chamber, the second oil-feed valve is opened in suction, and fluid enters from filler opening, arrives second pump housing cavity volume through the second valve body cavity volume; First pump housing cavity volume produces malleation simultaneously, forms delivery chamber, pushes the first fuel-displaced valve under pressure open, and fluid, flows out from oil outlet through the first valve body cavity volume from first pump housing cavity volume again.No matter the rotation of driving gear clockwise direction, or rotation counterclockwise so long as continuous motion both can reach continuous oil suction and press oily purpose, can keep filler opening and oil outlet constant all the time again.
Four identical valves of structure are integrated inner flow passage automatic reverse function when finishing the gear pump clockwise and anticlockwise by valve body; The valve endoporus runs through and is enclosed within on the valve rod external cylindrical surface, and the switching during valve working is a straight line motion; Valve cooperates with the valve body conical surface, seals reliable and easy to process.
The described first oil-feed valve (11a) is littler than the diameter near the first valve body cavity volume (9) one ends near the diameter of filler opening (7) one ends, the described second oil-feed valve (11b) is littler than the diameter near the second valve body cavity volume (10) one ends near the diameter of filler opening (7) one ends, the described first fuel-displaced valve (11c) is bigger than the diameter near the first valve body cavity volume (9) one ends near the diameter of oil outlet (8) one ends, the described second fuel-displaced valve (11d) is bigger than the diameter near the second valve body cavity volume (10) one ends near the diameter of oil outlet (8) one ends, described first, the second fuel-displaced valve (11c, 11d) be set in parallel in the left side of described valve body (1), described first, the second oil-feed valve (11a, 11b) be oppositely arranged and with described first, the second fuel-displaced valve (11c, axis normal 11d), described first, the second oil-feed valve (11a, 11b) with first, the second fuel-displaced valve (11c, axis 11d) is in the same plane.With the structure and the arrangement of the valve of further optimization valve group commutation type gear pump, so that the installation of the processing of valve body and valve.
Be with cylindrical compression spring (13) on the described valve rod (1).Valve resets by cylindrical compression spring, and the location is reliable.
The beneficial effects of the utility model:
1) sealing surface of valve and valve body is a conical surface, the reliability height.
2) pump housing need not the additional runner of peripheral hardware, and valve body, pump body structure are simple, and casting, machining are easy.
3) assembling, convenient disassembly, high-precision part quantity is few, and general part is many, and interchangeability is strong, for ease of maintenaince.
4) few, the good manufacturability of ingenious, the compact structure of design, part, cost are low, and the specific discharge volume is little, in light weight, vibration is little, at the bottom of the noise.
5) can carry out clockwise and anticlockwise at any time, filler opening and oil outlet remain unchanged.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is A among Fig. 1-A sectional view.
Fig. 3 is B among Fig. 1-B sectional view.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
Valve group commutation type gear pump shown in Fig. 1-3 is formed by valve body 1, the pump housing 2, driving gear 3, driven gear 4, four valves 11 and with valve 11 matching used valve rods 12, spring 13, valve gap 14, bolt 15 etc.During installation, pack into successively in valve body 1 valve 11, spring 13, valve rod 12, valve gap 14 compress with bolt 15 then, again with component combinations such as the pump housing 2, driving gear 3, driven gears 4.
As shown in Figure 3, be equipped with in the left side of the pump housing 2 and be up and down driving gear 3 and the driven gear of arranging 4, driving gear 3 and driven gear 4 are the figure of eight to be installed, and is provided with first pump housing cavity volume 5 and second pump housing cavity volume 6 in the pump housing 2 left sides.As shown in Figure 1, the right-hand member of valve body 1 is connected with the left end of the pump housing 2, and driving gear 3 and driven gear 4 are helical gear, and valve body 1 is provided with filler opening 7 and oil outlet 8.Be provided with the first valve body cavity volume 9 and the second valve body cavity volume 10 in the right side of valve body 1, the first valve body cavity volume 9 is communicated with first pump housing cavity volume 5, the second valve body cavity volume 10 is communicated with second pump housing cavity volume 6, and the conventional design that the above is the commutation type gear pump does not repeat them here.
As shown in Figure 2, four valves 11 are housed in the valve body 1, correspondence is provided with valve opening in valve body 1.With valve 11 is matching used cylinder-shaped valve rod 12, cylindrical compression spring 13, valve gap 14 and bolt 15 arranged.Valve 11 axially is provided with the circular hole with valve rod 12 Spielpassung, and cylindrical compression spring 13 and valve 11 are enclosed within on the valve rod 12, and valve 11 relies on the spring power of pressure spring 13 to reset.Valve gap 14 is installed on the valve body 1 by bolt 15.
As shown in Figure 2, four valves 11 are respectively the first oil-feed valve 11a, the second oil-feed valve 11b, the first fuel-displaced valve 11c and the second fuel-displaced valve 11d, and four valves 11 have been formed the valve group.The first oil-feed valve 11a is between the filler opening 7 and the first valve body cavity volume 9, the first fuel-displaced valve 11c is between the oil outlet 8 and the first valve body cavity volume 9, the second oil-feed valve 11b is between the filler opening 7 and the second valve body cavity volume 10, and the second fuel-displaced valve 11d is between the oil outlet 8 and the second valve body cavity volume 10; When the first oil-feed valve 11a opened, filler opening 7 was communicated with the first valve body cavity volume 9, and when the first oil-feed valve 11a closed, the filler opening 7 and the first valve body cavity volume 9 were spaced, and the working method of other three valves 11 is identical.Valve 11 has conical surface, and valve body 1 has round taper hole in valve 11 corresponding positions, and the face that valve 11 cooperates with valve body 1 is a conical surface.
Shown in Figure 2, the first oil-feed valve 11a is littler than the diameter near the first valve body cavity volume, 9 one ends near the diameter of filler opening 7 one ends, the second oil-feed valve 11b is littler than the diameter near the second valve body cavity volume, 10 1 ends near the diameter of filler opening 7 one ends, the first fuel-displaced valve 11c is bigger than the diameter near the first valve body cavity volume, 9 one ends near the diameter of oil outlet 8 one ends, the second fuel-displaced valve 11d is bigger than the diameter near the second valve body cavity volume, 10 1 ends near the diameter of oil outlet 8 one ends, described first, the second fuel-displaced valve 11c, 11d is set in parallel in the left side of valve body 1, first, the second oil-feed valve 11a, 11b is oppositely arranged and with first, the second fuel-displaced valve 11c, the axis normal of 11d, described first, the second oil-feed valve 11a, 11b and first, the second fuel-displaced valve 11c, the axis of 11d is in the same plane.Such valve 11 structures and the arrangement of valve group more help the processing of valve body 1 and the installation of valve 11, but are not limited only to above-mentioned valve body 1 structure and valve group arrangement, and the above only is one of its preferred implementation.
Claims (3)
1. valve group commutation type gear pump, comprise valve body (1), the pump housing (2), the right-hand member of described valve body (1) is connected with the left end of the described pump housing (2), be equipped with in the left side of the described pump housing (2) and be driving gear (3) and the driven gear of arranging up and down (4), be provided with first pump housing cavity volume (5) and second pump housing cavity volume (6) in the described pump housing (2) left side, described valve body (1) is provided with filler opening (7) and oil outlet (8), be provided with the first valve body cavity volume (9) and the second valve body cavity volume (10) in the right side of this valve body (1), the described first valve body cavity volume (9) is communicated with described first pump housing cavity volume (5), the described second valve body cavity volume (10) is communicated with described second pump housing cavity volume (6), it is characterized in that: four valves (11) are housed in the described valve body (1), be respectively first, the second oil-feed valve (11a, 11b) with first, the second fuel-displaced valve (11c, 11d), the described first oil-feed valve (11a) is positioned between the filler opening (7) and the first valve body cavity volume (9), the described first fuel-displaced valve (11c) is positioned between the oil outlet (8) and the first valve body cavity volume (9), the described second oil-feed valve (11b) is positioned between the filler opening (7) and the second valve body cavity volume (10), the described second fuel-displaced valve (11d) is positioned between the oil outlet (8) and the second valve body cavity volume (10), described valve (11) is enclosed within on separately the valve rod (12), cooperates for conical surface between described valve (11) and the valve body (1).
2. according to the described valve group of claim 1 commutation type gear pump, it is characterized in that: the described first oil-feed valve (11a) is littler than the diameter near the first valve body cavity volume (9) one ends near the diameter of filler opening (7) one ends, the described second oil-feed valve (11b) is littler than the diameter near the second valve body cavity volume (10) one ends near the diameter of filler opening (7) one ends, the described first fuel-displaced valve (11c) is bigger than the diameter near the first valve body cavity volume (9) one ends near the diameter of oil outlet (8) one ends, the described second fuel-displaced valve (11d) is bigger than the diameter near the second valve body cavity volume (10) one ends near the diameter of oil outlet (8) one ends, described first, the second fuel-displaced valve (11c, 11d) be set in parallel in the left side of described valve body (1), described first, the second oil-feed valve (11a, 11b) be oppositely arranged and with described first, the second fuel-displaced valve (11c, axis normal 11d), described first, the second oil-feed valve (11a, 11b) with first, the second fuel-displaced valve (11c, axis 11d) is in the same plane.
3. according to the described valve group of claim 1 commutation type gear pump, it is characterized in that: be with cylindrical compression spring (13) on the described valve rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206006579U CN201858145U (en) | 2010-11-11 | 2010-11-11 | Valve bank reversing type gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206006579U CN201858145U (en) | 2010-11-11 | 2010-11-11 | Valve bank reversing type gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201858145U true CN201858145U (en) | 2011-06-08 |
Family
ID=44103953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206006579U Expired - Lifetime CN201858145U (en) | 2010-11-11 | 2010-11-11 | Valve bank reversing type gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201858145U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975162A (en) * | 2010-11-11 | 2011-02-16 | 重庆跃进机械厂有限公司 | Valve-group reversing type gear pump |
-
2010
- 2010-11-11 CN CN2010206006579U patent/CN201858145U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975162A (en) * | 2010-11-11 | 2011-02-16 | 重庆跃进机械厂有限公司 | Valve-group reversing type gear pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |
|
| CX01 | Expiry of patent term |