CN212003467U - Inclined disc type axial plunger pump with pressure protection aqueous medium - Google Patents
Inclined disc type axial plunger pump with pressure protection aqueous medium Download PDFInfo
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- CN212003467U CN212003467U CN202020180498.5U CN202020180498U CN212003467U CN 212003467 U CN212003467 U CN 212003467U CN 202020180498 U CN202020180498 U CN 202020180498U CN 212003467 U CN212003467 U CN 212003467U
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Abstract
The utility model belongs to the technical field of fluid transmission and control equipment, and relates to an inclined disc type axial plunger pump with pressure protection for aqueous media, which comprises a shell, wherein one axial end of the shell is hermetically connected with a water inlet and outlet flange, the outer end surface of the water inlet and outlet flange is tightly connected with a front cover plate, and the other axial end of the shell is fixed with a rear end cover; the main shaft rotates set up in on business turn over water flange, the front shroud, the main shaft stretches into the shaft diameter cooperation in the casing and connects in the hole of cylinder body, sets up the main spring corresponding to the tip of main shaft in the hole of cylinder body, and the hole terminal surface cooperation of cylinder body sets up the ball pivot, the main spring compress tightly in on the ball pivot, the return stroke dish is connected in the ball pivot cooperation, is provided with the plunger corresponding to the outer lane of hole on the cylinder body, return stroke dish, plunger compress tightly the piston shoes in the first inclined plane of sloping cam plate. The plunger pump can reduce the output flow of the pump when the pressure is too high, and plays a role in protecting each part of the pump body.
Description
Technical Field
The utility model belongs to the technical field of fluid drive and controlgear, a take pressure protection aqueous medium swash plate formula axial plunger pump is related to.
Background
The rising green transmission technology using water (including seawater and fresh water) as a working medium in the 20 th century is the leading research direction in the field of fluid transmission and control in the world at present. The seawater hydraulic transmission technology directly taking seawater as a working medium has become the development direction of the power driving system of the underwater operation equipment in the world at present, and is proved to be the best power driving mode by years of practical application in western developed countries, and becomes the inevitable choice of the power driving mode of the underwater operation equipment.
The water hydraulic pump is a core power element of a hydraulic transmission system, is classified as a high and new technical project with important engineering application value in western countries for many years, and develops a series of mature water hydraulic pump products. And the products on the market at present mainly take an axial plunger type structure as a main part. In recent years, research work in the aspects of hydraulic transmission and control is gradually developed in China, university of science and technology, Zhejiang university and other colleges, and a plurality of water hydraulic axial plunger pump models are gradually developed.
The water medium axial plunger pump in the current market mainly uses a fixed displacement pump. The system is generally provided with a safety valve, and when the system pressure is too high, the safety valve is opened to overflow, so that the control of the system pressure is realized. There are the following disadvantages:
1) in the working process of the safety valve, the pump still runs at full power;
2) the power consumption is very large, and the system heats quickly;
3) increase unnecessary wear of the pump;
4) if the safety valve is stuck, the water pump and other parts can be damaged.
Disclosure of Invention
The utility model provides a to above-mentioned problem, a take pressure protection aqueous medium swash plate axial plunger pump is provided, this plunger pump can reduce the output flow of pump when pressure is too high, plays each spare part of the pump body and plays the guard action.
According to the technical scheme of the utility model: the utility model provides a take pressure protection aqueous medium swash plate formula axial plunger pump which characterized in that: the water inlet and outlet device comprises a shell, wherein one axial end of the shell is hermetically connected with a water inlet and outlet flange, the outer end face of the water inlet and outlet flange is fixedly connected with a front cover plate, and the other axial end of the shell is fixedly provided with a rear end cover;
the main shaft is rotatably arranged on the water inlet and outlet flange and the front cover plate, the main shaft extends into the shaft diameter in the shell and is connected in a matching manner in an inner hole of the cylinder body, a main spring is arranged in the inner hole of the cylinder body corresponding to the end part of the main shaft, a spherical hinge is arranged on the end surface of the inner hole of the cylinder body in a matching manner, the main spring is tightly pressed on the spherical hinge, the spherical hinge is connected with a return disc in a matching manner, a plunger is arranged on an outer ring of the cylinder body corresponding to the inner hole, a sliding shoe is tightly pressed on a first inclined surface of the swash plate by the return disc and the plunger, a rotary steel ball is arranged between a second inclined surface of the swash plate and a contact surface of the rear end cover, the swash plate;
the water inlet and outlet flange is provided with a control valve assembly, the control valve assembly comprises a valve shell, the valve shell is provided with a high-pressure water port and a control water port, the valve shell is provided with a control mechanism for controlling the connection or disconnection of the high-pressure water port and the control water port, the control water port is communicated with one end of a flow passage on the shell, the other end of the flow passage extends to the position of a support seat on the rear end cover, the support seat can move axially relative to the rear end cover, and a support seat spring is arranged between the support; the high-pressure water port is communicated with a water pump outlet arranged on the water inlet and outlet flange.
As a further improvement, control mechanism is including connecting in the downthehole nut of valve casing axial, still is provided with the plug in the axial of valve casing, sets up the variable case between plug and the nut, sets up spring holder and spring in the nut hole, spring and spring holder fastening connection, and the spring other end top is tight in the axial one end of variable case, and the axial other end of variable case passes the tip through-hole top of plug and tightly on the control steel ball that the plug outside set up, the steel ball is used for adjusting the switching at the control mouth of a river, has the clearance between the axial tip of variable case and nut.
As a further improvement, be equipped with limit flange on the core of variable case, in the core that corresponds to limit flange one side of variable case stretched into the nut, the tip that the variable case corresponds to the core of limit flange opposite side was equipped with axial extension, axial extension passes the tip through-hole of plug.
As a further improvement, the water inlet and outlet flange is corresponding to a fixed valve plate on one side end face of the shell, and the cylinder body is provided with a floating plate corresponding to one side end face of the valve plate.
As a further improvement of the utility model, the rear end cover is provided with semicircular ball sockets on the second inclined plane of sloping cam plate respectively, and the rear end cover is provided with the gyration steel ball in the ball socket of the second inclined plane of sloping cam plate mutually supporting.
The technical effects of the utility model reside in that: the utility model discloses at the during operation, when system pressure was too high, the water pump at first changed self sloping cam plate angle, reduced pump output flow, protected each spare part of system, the while cooperation system relief valve can play duplicate protection. The concrete aspects are as follows: the pump body is provided with a control valve component which can respectively control the opening of high pressure/low pressure at the bottom of the support according to the outlet pressure of the pump; throttle holes are respectively arranged in the control valve assembly and at the bottom of the support, so that the swinging speed of the swash plate is controlled, and the impact in the swinging process of the variable-angle swash plate is avoided; and thirdly, the bottom of the variable-angle swash plate is supported by two steel balls and a support and can swing along the axes of the two steel balls under the action of the support.
Drawings
Fig. 1 is a sectional view of the present invention.
Fig. 2 is a schematic structural view of a pressure control valve assembly.
Fig. 3 is a schematic view of the swash plate structure.
FIG. 4 is a bottom view of the swash plate.
FIG. 5 is a side view of the swash plate.
Fig. 6 is a schematic diagram of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
In the figures 1-6, the device comprises a main shaft 1, a front cover plate 2, a water inlet and outlet flange 3, a high-pressure water gap 3-1, a control water gap 3-2, a shell 4, a valve plate 5, a floating plate 6, a cylinder body 7, a plunger 8, a sliding shoe 9, a return plate 10, a spherical hinge 11, a rear end cover 12, a support spring 13, a support 14, a swash plate 15, a first inclined plane 15-1, a second inclined plane 15-2, a third inclined plane 15-3, a ball socket 15-4, a swash plate variable axis 15-5, a pressure control valve assembly 16, a valve shell 17, a control steel ball 18, a plug 19, a variable valve core 20, a spring 21, a spring seat 22, a nut 23, a lock nut 24, an adjusting screw 25 and the like.
As shown in FIGS. 1-6, the utility model relates to a take pressure protection aqueous medium swash plate formula axial plunger pump, including casing 4, 4 axial one end sealing connection business turn over water flange 3 of casing, business turn over water flange 3 outer terminal surface fastening connection front shroud 2, 4 axial other ends fixed rear end cap 12 of casing.
The main shaft 1 is rotatably arranged on the water inlet and outlet flange 3 and the front cover plate 2, the main shaft 1 extends into the shaft diameter in the shell 4 and is connected in a matching manner with an inner hole of the cylinder body 7, a main spring is arranged in the inner hole of the cylinder body 7 corresponding to the end part of the main shaft 1, a spherical hinge 11 is arranged on the end surface of the inner hole of the cylinder body 7 in a matching manner, the main spring is pressed on the spherical hinge 11, the spherical hinge 11 is connected with a return disc 10 in a matching manner, a plunger 8 is arranged on an outer ring of the cylinder body 7 corresponding to the inner hole, the return disc 10 and the plunger 8 press the sliding shoe 9 on a first inclined surface 15-1 of the swash plate 15, a rotary steel ball is arranged between a second inclined surface 15-2 of the swash plate 15 and a contact surface of the rear end cover 12, the swash plate 15 is further provided with a third inclined surface 15-3, the third inclined surface 15-3 extends to the outer end of the second inclined surface 15-2 and forms an obtuse angle with the.
The water inlet and outlet flange 3 is provided with a control valve assembly 16, the control valve assembly 16 comprises a valve shell 17, the valve shell 17 is provided with a high-pressure water port 3-1 and a control water port 3-2, the valve shell 17 is provided with a control mechanism for controlling the connection or disconnection of the high-pressure water port 3-1 and the control water port 3-2, the control water port 3-2 is communicated with one end of a flow channel on the shell 4, the other end of the flow channel extends to the position of a support 14 on the rear end cover 12, the support 14 can move axially relative to the rear end cover 12, and a support spring 13 is arranged between the support 14 and the rear end; the high-pressure water gap 3-1 is communicated with a water pump outlet arranged on the water inlet and outlet flange 3.
The control mechanism comprises a nut 23 connected in an axial hole of the valve housing 17, a plug 19 is further arranged in the axial hole of the valve housing 17, a variable valve core 20 is arranged between the plug 19 and the nut 23, a spring seat 22 and a spring 21 are arranged in the inner hole of the nut 23, the spring 21 is fixedly connected with the spring seat 22, the other end of the spring 21 is tightly propped against one axial end of the variable valve core 20, the other axial end of the variable valve core 20 penetrates through a through hole at the end part of the plug 19 and is tightly propped against a control steel ball 18 arranged on the outer side of the plug 19, the steel ball 18 is used for adjusting the opening and closing of the control water gap 3-2, and a moving gap is formed.
The core body of the variable valve core 20 is provided with a limiting flange, the core body of one side of the variable valve core 20, which corresponds to the limiting flange, extends into the nut 23, the end part of the core body of the other side of the variable valve core 20, which corresponds to the limiting flange, is provided with an axial extension part, and the axial extension part penetrates through a through hole at the end part of the plug 19.
The water inlet and outlet flange 3 is corresponding to one side end face of the shell 4 to fix the port plate 5, and the cylinder body 7 is provided with a floating plate 6 corresponding to one side end face of the port plate 5
The rear end cover 12 and the second inclined plane 15-2 of the swash plate 15 are respectively provided with a semicircular ball socket 15-4, and a rotary steel ball is arranged in the ball socket 15-4 where the rear end cover 12 and the second inclined plane 15-2 of the swash plate 15 are mutually matched.
The utility model discloses the working process of product is as follows: the main shaft 1 is driven to rotate, so that the cylinder body 7 is driven to rotate, the cylinder body 7 drives the plunger 8, the sliding shoes 9, the return stroke disc 10 and the floating disc 6 to do rotary motion, the sliding shoes 9 cling to the variable displacement swash plate 15 to do rotary motion under the combined action of the central spring, the spherical hinge 11 and the return stroke disc 10, and therefore the plunger 8 does reciprocating motion relative to the cylinder body 7, and the water sucking and discharging process of the water pump is achieved.
When the outlet pressure of the water pump is lower than the set pressure of the control valve assembly 16, the control steel ball 18 in the control valve assembly 16 is pressed on the left conical surface of the valve housing 17 under the action of the spring 21, and at the moment, the control oil port in the control valve assembly 16 is communicated with the low-pressure cavity 3-3, namely, the bottom of the support 14 is at low pressure, the angle of the water pump swash plate is alpha, and the water pump works normally.
When the pressure of the outlet of the water pump is higher than the set pressure of the control valve assembly 16, the control steel ball 18 in the control valve assembly 16 overcomes the action of the spring 21 under the action of high-pressure water, so that the control steel ball is pressed on the conical surface of the plug 19, at the moment, the control water gap is closed with the low-pressure cavity 3-3 and is communicated with the high-pressure water gap, namely, the bottom of the support 14 is high-pressure, the support 14 pushes the variable-angle swash plate 15 to swing to the position where the small plane is attached to the rear end cover 12 of the water pump along the variable axis of the swash plate by taking the steel balls in the two ball sockets 15-4 at the bottom as a fulcrum under the action of the high-pressure water, at the moment, the angle of the swash plate of the water pump is changed into (alpha-beta), the. Therefore, the protection of the pump and other parts of the system is realized.
Claims (5)
1. The utility model provides a take pressure protection aqueous medium swash plate formula axial plunger pump which characterized in that: the water inlet and outlet device comprises a shell (4), wherein one axial end of the shell (4) is hermetically connected with a water inlet and outlet flange (3), the outer end face of the water inlet and outlet flange (3) is fixedly connected with a front cover plate (2), and the other axial end of the shell (4) is fixedly provided with a rear end cover (12);
the main shaft (1) is rotatably arranged on the water inlet and outlet flange (3) and the front cover plate (2), the main shaft (1) extends into a shell (4) and is connected with an inner hole of a cylinder body (7) in a shaft diameter matching way, a main spring is arranged in the inner hole of the cylinder body (7) corresponding to the end part of the main shaft (1), a spherical hinge (11) is arranged on the end surface of the inner hole of the cylinder body (7) in a matching way, the main spring is tightly pressed on the spherical hinge (11), the spherical hinge (11) is connected with a return disc (10) in a matching way, a plunger (8) is arranged on the cylinder body (7) corresponding to the outer ring of the inner hole, the return disc (10) and the plunger (8) tightly press a sliding shoe (9) on a first inclined plane (15-1) of a swash plate (15), a rotary steel ball is arranged between a second inclined plane (15-2) of the swash plate (15) and a contact surface of a, the third inclined plane (15-3) extends to the outer end of the second inclined plane (15-2) and forms an obtuse angle with the second inclined plane (15-2);
the water inlet and outlet flange (3) is provided with a control valve assembly (16), the control valve assembly (16) comprises a valve shell (17), the valve shell (17) is provided with a high-pressure water port (3-1) and a control water port (3-2), the valve shell (17) is provided with a control mechanism for controlling the connection or disconnection of the high-pressure water port (3-1) and the control water port (3-2), the control water port (3-2) is communicated with one end of a flow channel on the shell (4), the other end of the flow channel extends to the position of a support (14) on the rear end cover (12), the support (14) can axially move relative to the rear end cover (12), and a support spring (13) is arranged between the support (14) and the rear end cover (12); the high-pressure water port (3-1) is communicated with a water pump outlet arranged on the water inlet and outlet flange (3).
2. The pressure protected aqueous medium swash plate axial piston pump of claim 1, wherein: the control mechanism comprises a nut (23) connected in an axial hole of the valve shell (17), a plug (19) is further arranged in the axial hole of the valve shell (17), a variable valve core (20) is arranged between the plug (19) and the nut (23), a spring seat (22) and a spring (21) are arranged in the inner hole of the nut (23), the spring (21) is fixedly connected with the spring seat (22), the other end of the spring (21) is tightly propped against one axial end of the variable valve core (20), the other axial end of the variable valve core (20) penetrates through a through hole at the end part of the plug (19) and is tightly propped against a control steel ball (18) arranged on the outer side of the plug (19), the steel ball (18) is used for adjusting the opening and closing of the control water gap (3-2), and a moving gap is formed between the axial end parts of the variable valve.
3. The pressure protected aqueous medium swash plate axial piston pump of claim 2, wherein: the variable valve core (20) is characterized in that a limiting flange is arranged on a core body of the variable valve core (20), the core body of one side, corresponding to the limiting flange, of the variable valve core (20) extends into the nut (23), an axial extending portion is arranged at the end portion, corresponding to the core body of the other side of the limiting flange, of the variable valve core (20), and the axial extending portion penetrates through a through hole in the end portion of the plug (19).
4. The pressure protected aqueous medium swash plate axial piston pump of claim 1, wherein: the water inlet and outlet flange (3) is corresponding to one side end face of the shell (4) and is fixedly provided with a flow distribution plate (5), and the cylinder body (7) is corresponding to one side end face of the flow distribution plate (5) and is provided with a floating plate (6).
5. The pressure protected aqueous medium swash plate axial piston pump of claim 1, wherein: the rear end cover (12) and the second inclined plane (15-2) of the swash plate (15) are respectively provided with a semicircular ball socket (15-4), and a rotary steel ball is arranged in the ball socket (15-4) in which the rear end cover (12) and the second inclined plane (15-2) of the swash plate (15) are mutually matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020180498.5U CN212003467U (en) | 2020-02-18 | 2020-02-18 | Inclined disc type axial plunger pump with pressure protection aqueous medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020180498.5U CN212003467U (en) | 2020-02-18 | 2020-02-18 | Inclined disc type axial plunger pump with pressure protection aqueous medium |
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| Publication Number | Publication Date |
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| CN212003467U true CN212003467U (en) | 2020-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020180498.5U Active CN212003467U (en) | 2020-02-18 | 2020-02-18 | Inclined disc type axial plunger pump with pressure protection aqueous medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339222A (en) * | 2021-07-20 | 2021-09-03 | 安徽理工大学 | Double-row axial plunger pump based on digital variable |
-
2020
- 2020-02-18 CN CN202020180498.5U patent/CN212003467U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339222A (en) * | 2021-07-20 | 2021-09-03 | 安徽理工大学 | Double-row axial plunger pump based on digital variable |
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