CN210195944U - Inclined sealing ring flow distribution mechanism, axial plunger motor and axial plunger pump - Google Patents
Inclined sealing ring flow distribution mechanism, axial plunger motor and axial plunger pump Download PDFInfo
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- CN210195944U CN210195944U CN201920704800.XU CN201920704800U CN210195944U CN 210195944 U CN210195944 U CN 210195944U CN 201920704800 U CN201920704800 U CN 201920704800U CN 210195944 U CN210195944 U CN 210195944U
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- sealing ring
- flow distribution
- plunger
- working medium
- distribution mechanism
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Abstract
The utility model provides a flow distribution mechanism of an inclined sealing ring, an axial plunger motor and an axial plunger pump, so as to solve the problems of leakage and heating caused by easy abrasion of friction pairs in the flow distribution of the flow distribution plate and the problem of complex flow distribution structure in the forward and reverse rotation of the flow distribution realized by adopting a one-way valve, a first sealing ring (1), a second sealing ring (5) and a third sealing ring (6) are arranged on the inner wall of a shell (14) of an axial plunger motion device at intervals to form a friction pair with the side wall of a plunger cylinder (13) of the axial plunger motion device, a second working medium hole (3) is respectively arranged on the side wall of the plunger cylinder corresponding to each plunger cavity (4), the second working medium hole is used for being matched with the second sealing ring to enable the plunger cavity (4) to be alternately communicated with the two working medium areas (11) along with the rotation of the plunger cylinder, so that the sealing switching of the working medium entering and exiting the plunger cavity is realized. The axial plunger motor and the axial plunger pump comprise the flow distribution mechanism.
Description
Technical Field
The utility model relates to an axial plunger telecontrol equipment's the mechanism that flows that joins in marriage especially relates to a slope sealing ring mechanism that flows that joins in marriage.
Background
The common axial plunger moving device comprises an axial plunger motor and an axial plunger pump. The existing axial plunger moving device has the following common flow distribution modes: 1. direct flow distribution, such as gear pumps; 2. port plates for port flow, such as vane pump axial plunger pumps; 3. and the check valve is used for distributing flow, such as a single plunger pump and a three plunger pump.
Direct flow distribution causes series flow of high and low pressures due to the fact that gears are not easy to seal, and therefore the working efficiency of a motor or a pump is low. The flow distribution of the one-way valve is usually in a fixed direction, and the flow distribution structure for realizing the forward and reverse rotation of the motor is very complex. In the flow distribution mode of the flow distribution plate, the flow distribution plate is arranged at the end part of the shell and is matched with the end part of the plunger cylinder, and the flow distribution mode is easy to abrade a friction pair to cause leakage and heat generation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a slope sealing ring flow distribution mechanism to solve axial plunger telecontrol equipment and adopt the valve plate to join in marriage the easy wear and tear friction pair that exists and cause the technical problem who leaks and generate heat, and solve and adopt the check valve to join in marriage the technical problem that the flow distribution structure is complicated that the realization positive and negative rotation exists of flowing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an inclined sealing ring flow distribution mechanism is applied to an axial plunger motion device and comprises a first sealing ring (1), a second sealing ring (5) and a third sealing ring (6), wherein the first sealing ring (1), the second sealing ring (5) and the third sealing ring (6) are arranged on the inner wall of a shell (14) of the axial plunger motion device in an annular mode at intervals and form a friction pair with the side wall of a plunger cylinder (13) of the axial plunger motion device, the second sealing ring (5) separates the side wall of the plunger cylinder (13) from an annular space (12) between the shell (14) to form two working medium areas (11), a plane (5') where the second sealing ring (5) is located is obliquely crossed with a rotation axis (15) of the plunger cylinder (13), and first working medium holes (2) are respectively formed in the shell (14) corresponding to the two working medium areas (11), and second working medium holes (3) are respectively formed in the side wall of the plunger cylinder (13) corresponding to each plunger cavity (4), and the second working medium holes (3) are used for being matched with the second sealing ring (5) to enable the plunger cavities (4) to be alternately communicated with the two working medium areas (11) along with the rotation of the plunger cylinder (13), so that the sealing switching of the working medium entering and exiting the plunger cavities (4) is realized.
The working medium in the utility model refers to working medium, which can be various fluids such as oil, water, gas, etc.
In the inclined sealing ring flow distribution mechanism, preferably, the second working medium holes (3) are a plurality of micropores distributed in a net shape.
In the above-mentioned inclined sealing ring flow distribution mechanism, preferably, the second sealing ring (5) has two inclined waists, a midpoint of each inclined waist serves as a switching transition region (2 ') to cooperate with the second working medium hole (3) to realize the sealing switching of the working medium in and out of the plunger cavity (4), and a first connecting line between the switching transition regions on the two inclined waists is in the same direction or parallel with a second connecting line between an upper dead point (10) and a lower dead point (10') of the slipper on the swash plate (9).
In the above-described inclined seal ring flow distribution mechanism, the second seal ring (5) is preferably a rigid seal ring integrally molded with the housing (14).
In the above-described inclined seal ring flow distribution mechanism, preferably, the first seal ring (1) is a rigid seal ring integrally molded with the housing (14).
In the above-described inclined seal ring flow distribution mechanism, preferably, the third seal ring (6) is a rigid seal ring integrally molded with the housing (14).
In some embodiments, the first sealing ring (1), the second sealing ring (5) and the third sealing ring (6) are flexible sealing rings.
An axial plunger pump comprising a flow distribution mechanism, wherein the flow distribution mechanism may be the inclined sealing ring flow distribution mechanism of any one of the above.
An axial plunger motor comprising a flow distribution mechanism, wherein the flow distribution mechanism may be any one of the above-described inclined seal ring flow distribution mechanisms.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model discloses a radial flow distribution structure can reduce wearing and tearing greatly to reduce the leakage that the vice wearing and tearing of friction caused and generate heat. And the forward rotation and the reverse rotation of the power output shaft can be conveniently realized by changing the flow direction of the working medium.
Drawings
FIG. 1 is a schematic structural view of a flow distribution mechanism of an inclined sealing ring;
FIG. 2 is a schematic of top dead center and bottom dead center of the shoes on the swash plate;
reference numerals: 1. a first seal ring; 2. a first working medium hole; 2', switching a transition region; 3. a second working medium hole; 4. a plunger cavity; 5. a second seal ring; 5' and the plane of the second sealing ring; 6. a third seal ring; 7. a plunger; 8. a slipper; 9. a swash plate; 10. a top dead center; 10', bottom dead center; 11. a working medium area; 12. an annular space; 13 plunger cylinders; 14. a housing; 15. an axis of rotation.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 shows the housing after it has been cut open along the axis, and fig. 1 only shows two plungers 7 schematically, the number of plungers being larger in practice. Referring to fig. 1, the inclined sealing ring flow distribution mechanism includes a first sealing ring 1, a second sealing ring 5 and a third sealing ring 6, where the first sealing ring 1, the second sealing ring 5 and the third sealing ring 6 are annularly disposed on an inner wall of a housing 14 of an axial plunger motor at intervals and form a friction pair with a side wall of a plunger cylinder 13 of the axial plunger motor, the second sealing ring 5 partitions a side wall of the plunger cylinder 13 and an annular space 12 between the housing 14 into two working medium areas 11, a plane 5' where the second sealing ring 5 is located is obliquely intersected with a rotation axis 15 of the plunger cylinder 13, the housing 14 is provided with first working medium holes 2 corresponding to the two working medium areas 11, the side wall of the plunger cylinder 13 is provided with second working medium holes 3 corresponding to each plunger cavity 4, the second working medium holes 3 are used for matching with the second sealing rings 5, so that the plunger cavities 4 are alternately communicated with the two working medium areas 11 along with rotation of the plunger cylinder 13, thereby realizing the sealing switching of the working medium in and out of the plunger cavity 4.
The working principle is described below by taking the left plunger 7, the left plunger chamber 4 and the left second working medium hole 3 in fig. 1 as an example.
The working principle is as follows:
when the first working medium hole 2 on the upper side is used as an oil inlet and the first working medium hole 2 on the lower side is used as an oil return hole, the working medium area 11 on the upper side is a high-pressure area and the working medium area 11 on the lower side is a low-pressure area. Oil in the high-pressure area enters the left plunger chamber 4 through the left second working medium hole 3 to push the left plunger 7 to move downwards, and under the action of the sliding shoe 8 and the swash plate 9 (see fig. 2), the plunger 7 moves tangentially in the downward movement process to push the plunger cylinder 13 to rotate, so that the power output shaft arranged at the center of the plunger cylinder 13 rotates.
With the rotation of the plunger cylinder 13, the left second working medium hole 3 rotates to overlap with a middle point (switching transition area 2') of one inclined waist of the second seal ring 5, and the left second working medium hole 3 is sealed by the second seal ring 5.
The plunger cylinder 13 continues to rotate, the second working medium hole 3 on the left side enters a low-pressure area, and oil in the plunger cavity 4 on the left side enters the low-pressure area and then flows back from the oil return hole.
The plunger cylinder 13 continues to rotate, and the second working medium hole 3 rotates to overlap with the middle point (switching transition zone) of the other inclined waist of the second sealing ring 5 and is sealed by the second sealing ring 5.
The plunger cylinder 13 continues to rotate and the second working substance bore 3 again enters the high pressure region.
The power output shaft arranged in the center of the plunger cylinder 13 can be pushed to continuously rotate according to the continuous circulation.
If the power output shaft needs to be controlled to rotate reversely, only oil (working medium) needs to be controlled to flow reversely, namely, the original oil inlet is used as an oil return port, and the original oil return port is used as an oil inlet.
As can be seen from the above, the inclined sealing ring flow distribution mechanism is arranged at the side part of the plunger cylinder 13, and the working medium enters the plunger cavity 4 from the side wall of the plunger cylinder 13, so that the inclined sealing ring flow distribution mechanism can be called as radial flow distribution. In the existing valve plate flow distribution method, the valve plate is of a disc structure and is arranged at the end part of the shell and matched with the end part of the plunger cylinder, and the working medium enters the plunger cavity from the end part of the plunger cylinder, so that the method can be called axial flow distribution.
In the axial flow distribution, the flow distribution direction is the same as or close to the same as the movement direction of the plunger, so that the pressure on a friction pair of the flow distribution plate and the plunger cylinder is high, and the friction pair is easily abraded to cause leakage and heat generation. And the utility model discloses a radially join in marriage and flow, because the direction of motion of joining in marriage a class direction and plunger is mutually perpendicular for join in marriage and flow the vice pressure of sealed friction and reduce greatly, thereby can reduce wearing and tearing greatly, effectively reduce the leakage that the vice wearing and tearing of friction caused and generate heat.
Furthermore, can understand by the aforesaid the utility model discloses only need control working medium's flow direction, can realize the power output shaft reversal. Namely, the utility model discloses the inclined sealing ring flow distribution mechanism can be used at the axial plunger motor that needs just reversing, realizes just reversing moreover very simply.
Furthermore, the second working medium holes 3 are designed into a plurality of micropores distributed in a net shape. Compared with a second working medium hole formed by one large hole, the second working medium hole formed by a plurality of micro holes can reduce the pressure between the sealing friction pair between the plunger cylinder 13 and the second sealing ring 5.
With further reference to fig. 1, the second sealing ring 5 has two inclined waists, which are coincident in fig. 1, and the midpoint of the inclined waists serves as a switching transition region 2 'for cooperating with the second working medium hole 3 to realize the sealing switching of the working medium in and out of the plunger cavity 4, where a connection line between the switching transition regions 2' on the two inclined waists is defined as a first connection line. Referring again to fig. 2, the highest point of the movement of the shoe 8 on the swash plate 9 is referred to as a top dead center 10, and the lowest point of the movement of the shoe 8 on the swash plate 9 is referred to as a bottom dead center 10 ', and a line connecting the top dead center 10 and the bottom dead center 10' is defined as a second line. The preferred positions of the second sealing ring 5 are: and enabling the first connecting line and the second connecting line to be in the same direction or in parallel. Thus, when the sliding shoe 8 runs to the top dead center 10, the corresponding second working medium hole 3 exactly overlaps one switching transition region 2 'on the second sealing ring 5, and when the sliding shoe 8 runs to the bottom dead center 10', the second working medium hole 3 exactly overlaps another switching transition region on the second sealing ring 5.
If the quantity of the plungers is two and symmetrical, when the plungers move to the top dead center and the bottom dead center of the swash plate, the second working medium holes (a plurality of micropores distributed in a net shape) corresponding to the two plunger cavities are completely sealed by the middle points of the two tilting waists of the second sealing ring, balance is achieved, unless the rotating shaft of the plunger cylinder has large inertia force to push staggered sealing, the plunger cylinder can be pushed to operate only by the acting force of the third plunger in the high-pressure oil area, and therefore the quantity of the plungers is required to be three or more than three.
Preferably, the second sealing ring 5 is a rigid sealing ring, preferably made of an alloy material, which is integrally formed with the housing 14, and can be formed by high-precision etching or numerical control machining. By adopting the design, the friction pair of the flow distribution seal has smaller wear and longer maintenance period, but needs to be replaced together with the shell when replaced, and the cost is higher. Likewise, the first sealing ring 1 is preferably a rigid sealing ring which is integrally formed with the housing 14. The third seal ring 6 is preferably a rigid seal ring which is integrally formed with the housing 14.
In another embodiment, the first sealing ring 1, the second sealing ring 5 and the third sealing ring 6 are flexible sealing rings.
The above description has been made by taking an axial plunger motor as an example. When the inclined sealing ring flow distribution mechanism is applied to other axial plunger devices such as an axial plunger pump and the like, the structure of the inclined sealing ring flow distribution mechanism is the same as that of the inclined sealing ring flow distribution mechanism, and the description is omitted.
The utility model discloses inclined sealing ring flow distribution mechanism can be applied to plunger quantity for three or three above various axial plunger devices, including but not limited to axial plunger motor, axial plunger pump.
The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for assisting the skilled person in understanding the content of the present invention, and can not be understood as the limitation of the protection scope of the present invention. Various decorations, equivalent changes and the like which are performed on the scheme by the technical personnel in the field under the conception of the invention are all included in the protection scope of the invention.
Claims (9)
1. An inclined sealing ring flow distribution mechanism is applied to an axial plunger motion device and is characterized by comprising a first sealing ring (1), a second sealing ring (5) and a third sealing ring (6), wherein the first sealing ring (1), the second sealing ring (5) and the third sealing ring (6) are arranged on the inner wall of a shell (14) of the axial plunger motion device at intervals in a surrounding mode and form a friction pair with the side wall of a plunger cylinder (13) of the axial plunger motion device, the second sealing ring (5) separates the side wall of the plunger cylinder (13) from an annular space (12) between the shell (14) to form two working medium areas (11), a plane (5') where the second sealing ring (5) is located is obliquely crossed with a rotation axis (15) of the plunger cylinder (13), and first holes (2) are formed in the shell (14) corresponding to the two working medium areas (11) respectively, and second working medium holes (3) are respectively formed in the side wall of the plunger cylinder (13) corresponding to each plunger cavity (4), and the second working medium holes (3) are used for being matched with the second sealing ring (5) to enable the plunger cavities (4) to be alternately communicated with the two working medium areas (11) along with the rotation of the plunger cylinder (13), so that the sealing switching of the working medium entering and exiting the plunger cavities (4) is realized.
2. The inclined sealing ring flow distribution mechanism according to claim 1, wherein the second working medium hole (3) is a plurality of micropores distributed in a net shape.
3. The inclined sealing ring flow distribution mechanism according to claim 1, wherein the second sealing ring (5) has two inclined waists, the middle point of each inclined waist is used as a switching transition area (2 ') to be matched with the second working medium hole (3) to realize the sealing switching of the working medium in and out of the plunger cavity (4), and a first connecting line between the switching transition areas on the two inclined waists is in the same direction or parallel with a second connecting line between an upper dead point (10) and a lower dead point (10') of the sliding shoe on the swash plate (9).
4. The inclined sealing ring flow distribution mechanism according to claim 1, wherein the second sealing ring (5) is a rigid sealing ring integrally formed with the housing (14).
5. The inclined sealing ring flow distribution mechanism according to claim 1, wherein the first sealing ring (1) is a rigid sealing ring integrally formed with the housing (14).
6. The inclined sealing ring flow distribution mechanism according to claim 1, wherein the third sealing ring (6) is a rigid sealing ring integrally formed with the housing (14).
7. The inclined sealing ring flow distribution mechanism according to claim 1, wherein the first sealing ring (1), the second sealing ring (5) and the third sealing ring (6) are flexible sealing rings.
8. An axial plunger pump comprising a flow distribution mechanism, wherein the flow distribution mechanism is the inclined sealing ring flow distribution mechanism of any one of claims 1 to 7.
9. An axial plunger motor comprising a flow distribution mechanism, wherein the flow distribution mechanism is the inclined sealing ring flow distribution mechanism of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920704800.XU CN210195944U (en) | 2019-05-15 | 2019-05-15 | Inclined sealing ring flow distribution mechanism, axial plunger motor and axial plunger pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920704800.XU CN210195944U (en) | 2019-05-15 | 2019-05-15 | Inclined sealing ring flow distribution mechanism, axial plunger motor and axial plunger pump |
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| CN210195944U true CN210195944U (en) | 2020-03-27 |
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| CN201920704800.XU Active CN210195944U (en) | 2019-05-15 | 2019-05-15 | Inclined sealing ring flow distribution mechanism, axial plunger motor and axial plunger pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989898A (en) * | 2019-05-15 | 2019-07-09 | 梁德荣 | Inclined seal ring flow-distribution mechanism, axial piston motor and axial plunger pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989898A (en) * | 2019-05-15 | 2019-07-09 | 梁德荣 | Inclined seal ring flow-distribution mechanism, axial piston motor and axial plunger pump |
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