CN216044324U - Diaphragm metering pump with automatic oil supplementing system - Google Patents
Diaphragm metering pump with automatic oil supplementing system Download PDFInfo
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- CN216044324U CN216044324U CN202121608318.XU CN202121608318U CN216044324U CN 216044324 U CN216044324 U CN 216044324U CN 202121608318 U CN202121608318 U CN 202121608318U CN 216044324 U CN216044324 U CN 216044324U
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Abstract
The utility model discloses a diaphragm metering pump with an automatic oil supplementing system, which comprises a diaphragm metering pump body, a detection control device and an oil supplementing pump, wherein the diaphragm metering pump body is provided with a pump body; the diaphragm metering pump body comprises a diaphragm, an oil way, a control valve, a hydraulic cavity and an oil storage cavity which are isolated from each other, and the diaphragm pushes the control valve to be opened before the suction stroke of the diaphragm metering pump is finished so that the oil way is communicated with the hydraulic cavity; an oil inlet of the oil replenishing pump is communicated with the oil storage cavity, and an oil outlet of the oil replenishing pump is communicated with the oil way; the detection control device is electrically connected with the oil replenishing pump and is suitable for controlling the oil replenishing pump to start when the pressure in the oil path is detected to be lower than a set value; and controlling the oil supplementing pump to be closed when the detected oil circuit pressure reaches a set value. The utility model can automatically and accurately supplement oil into the hydraulic cavity when needed, thereby being convenient and trouble-saving.
Description
Technical Field
The utility model relates to a diaphragm metering pump with an automatic oil supplementing system.
Background
The hydraulic diaphragm metering pump is characterized in that a motor decelerates through a worm gear and a worm, torque is transmitted to a hollow shaft, a connecting rod is driven to move, and the connecting rod pushes a crosshead to reciprocate in a slide way. The plunger is used for pushing hydraulic oil in a reciprocating mode, the hydraulic oil pushes the diaphragm to move in a reciprocating mode, the size of the volume cavity is regularly changed to play a metering role, the oil supplementing valve is a key component in the hydraulic diaphragm metering pump, oil supplementing of the existing oil supplementing valve is not accurate, accordingly, the feeding amount is less than a theoretical value, and the oil supplementing valve is prone to damage in the actual use process.
Disclosure of Invention
The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide the diaphragm metering pump with the automatic oil supplementing system, which can automatically and accurately supplement oil into the hydraulic cavity when needed, and is convenient and trouble-saving.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a diaphragm metering pump with an automatic oil supplementing system comprises a diaphragm metering pump body, a detection control device and an oil supplementing pump; wherein the content of the first and second substances,
the diaphragm metering pump body comprises a diaphragm, an oil way, a control valve, a hydraulic cavity and an oil storage cavity which are isolated from each other, and the diaphragm pushes the control valve to be opened before the suction stroke of the diaphragm metering pump is finished so that the oil way is communicated with the hydraulic cavity;
an oil inlet of the oil replenishing pump is communicated with the oil storage cavity, and an oil outlet of the oil replenishing pump is communicated with the oil way;
the detection control device is electrically connected with the oil replenishing pump and is suitable for controlling the oil replenishing pump to start when the pressure in the oil path is detected to be lower than a set value; and controlling the oil supplementing pump to be closed when the detected oil circuit pressure reaches a set value.
The specific structure of the detection control device is further provided, the detection control device comprises a digital display pressure switch, and a detection head of the digital display pressure switch extends into the oil way.
Further, the oil supplementing pump is a gear pump, a water ring vacuum pump or a reciprocating pump.
Furthermore, the oil path comprises a main oil path and an auxiliary oil path communicated with the main oil path, the detection head of the digital display pressure switch extends into the main oil path, and the oil outlet of the oil supplementing pump is communicated with the auxiliary oil path.
Further, the diaphragm metering pump body further comprises a diaphragm head, a hydraulic cylinder body, an oil tank and a plunger; wherein the content of the first and second substances,
the diaphragm head, the liquid cylinder body and the oil tank are sequentially connected from left to right;
a conveying cavity, a feeding channel and a discharging channel which are respectively communicated with the conveying cavity are arranged in the diaphragm head;
the hydraulic cavity and the oil way are respectively arranged in the liquid cylinder body, and the oil storage cavity is arranged in the oil tank;
the diaphragm is clamped between the diaphragm head and the hydraulic cylinder body and isolates the conveying cavity from the hydraulic cavity;
the plunger is sealed and inserted into the hydraulic chamber so as to be movable in the axial direction thereof.
The control valve comprises a hollow pipe which is inserted on the hydraulic cylinder body in a sealing way and can move along the axial direction of the hydraulic cylinder body, and a spring which is sleeved on the hollow pipe; wherein the content of the first and second substances,
the front end of the spring is abutted with the step at the front end part of the hollow pipe, and the rear end of the spring is abutted with the hydraulic cylinder body;
the side wall of the hollow pipe is provided with a through hole, and the through hole is opposite to the oil way opening after the diaphragm pushes the hollow pipe to move rightwards to the right position so that the oil way is communicated with the hydraulic cavity.
Further, in order to conveniently discharge the oil in the oil storage cavity when necessary, the bottom of the oil tank is provided with an oil drain hole which is communicated with the oil storage cavity and can be opened or closed.
Further, in order to play a role of safety protection, the oil tank is provided with a breather, and the hydraulic cylinder body is provided with a safety valve.
Furthermore, check valves are respectively arranged in the feeding channel and the discharging channel.
Further, a bush is arranged between the plunger and the cylinder body.
After the technical scheme is adopted, the diaphragm push control valve is opened before one suction stroke is about to end, the hydraulic cavity and the oil way are in a communicated state at the moment, if the pressure in the hydraulic cavity is lower than a set value, the detection control device can control the oil supplementing pump to be started to pump oil, and when the pressure in the hydraulic cavity reaches the set value, the detection control device can control the oil supplementing pump to be closed and the oil supplementing pump is ended.
Drawings
Fig. 1 is a schematic diagram of a diaphragm metering pump with an automatic oil replenishment system according to the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1, a diaphragm metering pump with an automatic oil supply system comprises a diaphragm metering pump body, a detection control device 1 and an oil supply pump 2; wherein the content of the first and second substances,
the diaphragm metering pump body comprises a diaphragm 3, an oil path, a control valve 4, a hydraulic chamber 51 and an oil storage chamber 61 which are isolated from each other, and the diaphragm 3 pushes the control valve 4 to be opened before the suction stroke of the diaphragm metering pump is finished so that the oil path is communicated with the hydraulic chamber 51;
an oil inlet of the oil replenishing pump 2 is communicated with the oil storage cavity 61, and an oil outlet of the oil replenishing pump is communicated with the oil way;
the detection control device 1 is electrically connected with the oil supplementing pump 2 and is suitable for controlling the oil supplementing pump 2 to start when the pressure in the oil path is detected to be lower than a set value; and controlling the oil replenishment pump 2 to be turned off when the detected oil line pressure reaches a set value.
Specifically, before a suction stroke is about to end, the diaphragm 3 pushes the control valve 4 to open, the hydraulic cavity 51 is in a communication state with an oil path, if the pressure in the hydraulic cavity 51 is lower than a set value, the detection control device 1 controls the oil supplementing pump 2 to start to pump oil, and when the pressure in the hydraulic cavity 51 reaches the set value, the detection control device 1 controls the oil supplementing pump 2 to close and the oil supplementing is finished.
As shown in fig. 1, the detection control device 1 includes a digital display pressure switch, and a detection head of the digital display pressure switch extends into the oil path.
In this embodiment, the oil replenishing pump 2 may be a gear pump, or may be a water ring vacuum pump or a reciprocating pump.
As shown in fig. 1, the oil path includes a main oil path 52 and an auxiliary oil path 53 communicated with the main oil path 52, a detection head of the digital display pressure switch extends into the main oil path 52, and an oil outlet of the oil replenishment pump 2 is communicated with the auxiliary oil path 53.
As shown in fig. 1, the diaphragm metering pump body further comprises a diaphragm head 7, a cylinder body 5, an oil tank 6 and a plunger 8; wherein the content of the first and second substances,
the diaphragm head 7, the hydraulic cylinder body 5 and the oil tank 6 are sequentially connected from left to right;
a conveying cavity 71, and a feeding channel 72 and a discharging channel 73 which are respectively communicated with the conveying cavity 71 are arranged in the diaphragm head 7;
the hydraulic cavity 51 and the oil path are respectively arranged in the hydraulic cylinder body 5, and the oil storage cavity 61 is arranged in the oil tank 6;
the diaphragm 3 is sandwiched between the diaphragm head 7 and the cylinder 5 and isolates the delivery chamber 71 from the hydraulic chamber 51;
the plunger 8 is sealingly and movably inserted in the axial direction thereof into the hydraulic chamber 51.
In this embodiment, the digital display pressure switch is fixed to the cylinder body 5 by a screw connection and sealed by a seal ring, or the digital display pressure switch may be fixed to the cylinder body 5 by a welding connection.
As shown in fig. 1, the control valve 4 comprises a hollow tube which is hermetically inserted in the hydraulic cylinder 5 and can move along the axial direction of the hydraulic cylinder and a spring which is sleeved on the hollow tube; wherein the content of the first and second substances,
the front end of the spring is abutted with the step at the front end part of the hollow pipe, and the rear end of the spring is abutted with the hydraulic cylinder body 5;
the side wall of the hollow tube is provided with a through hole, and the through hole is opposite to the oil way opening after the diaphragm 3 pushes the hollow tube to move rightwards to the right position so that the oil way is communicated with the hydraulic cavity 51. In this embodiment, the through-hole is open to the oil port, i.e., the control valve 4.
As shown in fig. 1, in order to facilitate the discharge of oil from the oil reservoir chamber 61 when necessary, an oil drain hole that is opened or closed and communicates with the oil reservoir chamber 61 is provided at the bottom of the oil tank 6.
In this embodiment, the oil drain hole is fitted with an oil drain bolt 9.
As shown in fig. 1, in order to provide a safety protection, the oil tank 6 is provided with a breather 62, and the cylinder block 5 is provided with a relief valve 54.
In the present embodiment, the relief valve 54 is used for exhaust and pressure control of the inside of the cylinder block 5.
As shown in fig. 1, check valves are installed in the feed passage 72 and the discharge passage 73, respectively.
As shown in fig. 1, a bush 10 is provided between the plunger 8 and the cylinder block 5.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present invention, unless otherwise expressly stated or limited, the first feature may be present on or under the second feature in direct contact with the first and second feature, or may be present in the first and second feature not in direct contact but in contact with another feature between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. A diaphragm metering pump with an automatic oil supplementing system is characterized in that,
the diaphragm metering pump comprises a diaphragm metering pump body, a detection control device (1) and an oil supplementing pump (2); wherein the content of the first and second substances,
the diaphragm metering pump body comprises a diaphragm (3), an oil way, a control valve (4), a hydraulic cavity (51) and an oil storage cavity (61), wherein the hydraulic cavity and the oil storage cavity are isolated from each other, and the diaphragm (3) pushes the control valve (4) to be opened before the suction stroke of the diaphragm metering pump is finished so that the oil way is communicated with the hydraulic cavity (51);
an oil inlet of the oil replenishing pump (2) is communicated with the oil storage cavity (61), and an oil outlet of the oil replenishing pump is communicated with the oil way;
the detection control device (1) is electrically connected with the oil supplementing pump (2) and is suitable for controlling the oil supplementing pump (2) to start when the pressure in the oil way is detected to be lower than a set value; and controlling the oil supplementing pump (2) to be closed when the detected oil circuit pressure reaches a set value.
2. The diaphragm metering pump with automatic oil replenishment system according to claim 1,
the detection control device (1) comprises a digital display pressure switch, and a detection head of the digital display pressure switch extends into the oil way.
3. The diaphragm metering pump with automatic oil replenishment system according to claim 1,
the oil supplementing pump (2) is a gear pump or a water ring vacuum pump or a reciprocating pump.
4. The diaphragm metering pump with automatic oil replenishment system according to claim 2,
the oil circuit comprises a main oil circuit (52) and an auxiliary oil circuit (53) communicated with the main oil circuit (52), a detection head of the digital display pressure switch extends into the main oil circuit (52), and an oil outlet of the oil supplementing pump (2) is communicated with the auxiliary oil circuit (53).
5. The diaphragm metering pump with automatic oil replenishment system according to claim 1,
the diaphragm metering pump body further comprises a diaphragm head (7), a hydraulic cylinder body (5), an oil tank (6) and a plunger (8); wherein the content of the first and second substances,
the diaphragm head (7), the hydraulic cylinder body (5) and the oil tank (6) are sequentially connected from left to right;
a conveying cavity (71), a feeding channel (72) and a discharging channel (73) which are respectively communicated with the conveying cavity (71) are arranged in the diaphragm head (7);
the hydraulic cavity (51) and the oil way are respectively arranged in the hydraulic cylinder body (5), and the oil storage cavity (61) is arranged in the oil tank (6);
the diaphragm (3) is clamped between the diaphragm head (7) and the hydraulic cylinder body (5) and isolates the conveying cavity (71) from the hydraulic cavity (51);
the plunger (8) is sealed and inserted into the hydraulic chamber (51) so as to be movable in the axial direction thereof.
6. The diaphragm metering pump with automatic oil replenishment system according to claim 5,
the control valve (4) comprises a hollow pipe which is hermetically inserted on the hydraulic cylinder body (5) and can move along the axial direction of the hydraulic cylinder body and a spring which is sleeved on the hollow pipe; wherein the content of the first and second substances,
the front end of the spring is abutted with the step at the front end part of the hollow pipe, and the rear end of the spring is abutted with the hydraulic cylinder body (5);
the side wall of the hollow pipe is provided with a through hole, and after the diaphragm (3) pushes the hollow pipe to move right to the right to reach the right position, the through hole is opposite to the oil port so that the oil path is communicated with the hydraulic cavity (51).
7. The diaphragm metering pump with automatic oil replenishment system according to claim 5,
the bottom of the oil tank (6) is provided with an oil drain hole which is communicated with the oil storage cavity (61) and can be opened or closed.
8. The diaphragm metering pump with automatic oil replenishment system according to claim 5,
a breather (62) is installed in the oil tank (6), and a safety valve (54) is installed in the hydraulic cylinder body (5).
9. The diaphragm metering pump with automatic oil replenishment system according to claim 5,
and one-way valves are respectively arranged in the feeding channel (72) and the discharging channel (73).
10. The diaphragm metering pump with automatic oil replenishment system according to claim 5,
and a bush (10) is arranged between the plunger (8) and the hydraulic cylinder body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121608318.XU CN216044324U (en) | 2021-07-14 | 2021-07-14 | Diaphragm metering pump with automatic oil supplementing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121608318.XU CN216044324U (en) | 2021-07-14 | 2021-07-14 | Diaphragm metering pump with automatic oil supplementing system |
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| Publication Number | Publication Date |
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| CN216044324U true CN216044324U (en) | 2022-03-15 |
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| CN202121608318.XU Active CN216044324U (en) | 2021-07-14 | 2021-07-14 | Diaphragm metering pump with automatic oil supplementing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163461A (en) * | 2022-08-26 | 2022-10-11 | 重庆水泵厂有限责任公司 | Diaphragm pump and accurate oil supply and discharge control method for diaphragm pump |
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2021
- 2021-07-14 CN CN202121608318.XU patent/CN216044324U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163461A (en) * | 2022-08-26 | 2022-10-11 | 重庆水泵厂有限责任公司 | Diaphragm pump and accurate oil supply and discharge control method for diaphragm pump |
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