CN213807949U - Servo pump - Google Patents
Servo pump Download PDFInfo
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- CN213807949U CN213807949U CN202022069759.9U CN202022069759U CN213807949U CN 213807949 U CN213807949 U CN 213807949U CN 202022069759 U CN202022069759 U CN 202022069759U CN 213807949 U CN213807949 U CN 213807949U
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Abstract
The utility model relates to a servo pump includes: the pump comprises a pump body, a piston mechanism, a power mechanism, a feeding pipe, a discharging pipe and four one-way valves, wherein the piston mechanism is movably connected with the pump body, the piston mechanism and the pump body are encircled to form a first pump cavity and a second pump cavity with variable volumes, the sum of the volumes of the first pump cavity and the second pump cavity is kept constant, the power mechanism is in transmission connection with the piston mechanism, and the power mechanism drives the piston mechanism to move so as to change the volumes of the first pump cavity and the second pump cavity simultaneously. Compared with the prior art, the servo pump comprises the first pump cavity and the second pump cavity with variable volumes, the sum of the volumes of the first pump cavity and the second pump cavity is kept constant, and when the power mechanism drives the piston mechanism to move so as to simultaneously change the volumes of the first pump cavity and the second pump cavity, the volume of one pump cavity is reduced to be the volume of the other pump cavity, so that the pump output is the same when the two pump cavities alternately pump raw materials outwards.
Description
Technical Field
The utility model relates to a pump technical field especially relates to servo pump.
Background
A pump is a machine that delivers or pressurizes a fluid. It transfers the mechanical energy of the prime mover or other external energy to the liquid, causing the liquid energy to increase.
In industrial production, a proper pump is often selected according to actual production needs to add raw materials for continuous production. In order to ensure that the quality of the produced product is fixed and no large fluctuation occurs, the amount of raw material added each time needs to be kept constant, and therefore higher requirements are provided for the adding precision of the pump for adding the raw material.
SUMMERY OF THE UTILITY MODEL
In view of this, it is necessary to provide a servo pump to solve the technical problem in the prior art that the adding precision of the material pump is not good enough, which results in a large amount error of the raw material added each time.
The utility model provides a servo pump, this servo pump includes: the pump comprises a pump body, a piston mechanism, a power mechanism, a feeding pipe, a discharging pipe and four one-way valves, wherein the piston mechanism is movably connected with the pump body, the piston mechanism and the pump body are encircled to form a first pump cavity and a second pump cavity with variable volumes, the sum of the volumes of the first pump cavity and the second pump cavity is kept constant, the power mechanism is in transmission connection with the piston mechanism, and the power mechanism drives the piston mechanism to move so as to change the volumes of the first pump cavity and the second pump cavity simultaneously; the feeding pipe comprises a first discharging hole and a second discharging hole, the first discharging hole is communicated with the first pump cavity through a one-way valve, the second discharging hole is communicated with the second pump cavity through a one-way valve, and the one-way valve enables fluid to flow into the first pump cavity or the second pump cavity from the feeding pipe in one way only; the discharge pipe comprises a first feed inlet and a second feed inlet, the first feed inlet is communicated with the first pump cavity through a one-way valve, the second feed inlet is communicated with the second pump cavity through a one-way valve, and the one-way valve enables fluid to flow into the discharge pipe from the first pump cavity or the second pump cavity only in one direction.
Furthermore, a first cylindrical cavity groove and a second cylindrical cavity groove are formed in two ends of the pump body respectively, the axis of the first cavity groove is parallel to or coincided with the axis of the second cavity groove, the piston mechanism comprises a piston body, a first piston rod and a second piston rod, the first piston rod is fixedly connected with the piston body, the first piston rod is inserted into the first cavity groove and surrounds the first cavity groove to form a first pump cavity, and the second piston rod is inserted into the second cavity groove and surrounds the second cavity groove to form a second pump cavity.
Further, the shape and the size of the first cavity groove are identical to those of the second cavity groove.
Further, form the main cavity body of a column type in the pump body, piston mechanism includes baffle and connecting rod, places the main cavity in the baffle and its side and the internal wall butt of main cavity in, separates into first pump chamber and second pump chamber with the main cavity body, connecting rod one end and baffle fixed connection, and the other end passes the pump body and is connected with power unit's power take off end.
Further, the axis of the connecting rod is coincident with or parallel to the axis of the main cavity.
Further, the power mechanism is a hydraulic oil cylinder.
Compared with the prior art, the servo pump comprises the first pump cavity and the second pump cavity with variable volumes, the sum of the volumes of the first pump cavity and the second pump cavity is kept constant, and when the power mechanism drives the piston mechanism to move so as to simultaneously change the volumes of the first pump cavity and the second pump cavity, the volume of one pump cavity is reduced to be the volume of the other pump cavity, so that the pump output is the same when the two pump cavities alternately pump raw materials outwards.
Drawings
Fig. 1 is a cross-sectional view of a first embodiment of a servo pump provided by the present invention;
fig. 2 is a cross-sectional view of a second embodiment of the servo pump provided by the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
Example one
Referring to fig. 1, in the present embodiment, the servo pump includes a pump body 1, a piston mechanism 2, a power mechanism 3, a feeding pipe 4, a discharging pipe 5, and four check valves 6.
The two ends of the pump body 1 are respectively provided with a first cylindrical cavity groove and a second cylindrical cavity groove, the cross-sectional areas of the first cavity groove and the second cavity groove are the same, and the first cavity groove and the second cavity groove are preferably identical in shape and size so as to reduce the processing difficulty. Meanwhile, the notches of the first cavity groove and the second cavity groove face to two opposite directions, and the axes of the first cavity groove and the second cavity groove are parallel or coincident.
The piston mechanism 2 comprises a first piston rod 21, a second piston rod 22 and a piston main body 23, the first piston rod 21 is inserted into the first cavity groove, the side surface of the first piston rod 21 is connected with the inner wall of the first cavity groove in a sliding and sealing mode, and a first pump cavity 11 is formed in a surrounding mode; the second piston rod 22 is inserted into the second cavity groove, and the side surface of the second piston rod 22 is connected with the inner wall of the second cavity groove in a sliding and sealing manner to form the second pump cavity 12 in an enclosing manner. The piston body 23 is fixedly connected to the first piston rod 21 and the second piston rod 22, respectively, so as to ensure the synchronism of the movement of the first piston rod 21 and the second piston rod 22.
The power mechanism 3 is connected with the piston mechanism 2 and drives the first piston rod 21 and the second piston rod 22 to synchronously move in the first cavity groove and the second cavity groove respectively, and simultaneously changes the volumes of the first pump chamber 11 and the second pump chamber 12, and the volume of the first pump chamber 11 is changed by the same amount as the volume of the second pump chamber 12. That is, when the volume of the first pumping chamber 11 decreases, the volume of the second pumping chamber 12 increases, and the volume of the first pumping chamber 11 decreases by an amount equal to the amount by which the volume of the second pumping chamber 12 increases. Conversely, when the volume of the first pumping chamber 11 increases, the volume of the second pumping chamber 12 decreases, and the volume of the first pumping chamber 11 increases by an amount equal to the amount by which the volume of the second pumping chamber 12 decreases. In this embodiment, the power mechanism 3 employs a hydraulic cylinder to provide sufficient and stable push-pull force.
The feed pipe 4 includes a first discharge port 41 and a second discharge port 42, the first discharge port 41 communicates with the first pumping chamber 11 through the check valve 6, the second discharge port 42 communicates with the second pumping chamber 12 through the check valve 6, and the check valve 6 allows fluid to flow from the feed pipe 4 into the first pumping chamber 11 or the second pumping chamber 12 only in one direction.
The outlet tube 5 comprises a first inlet opening 51 and a second inlet opening 52, the first inlet opening 51 communicating with the first pumping chamber 11 via the non-return valve 6, the second inlet opening 52 communicating with the second pumping chamber 12 via the non-return valve 6, the non-return valve 6 allowing fluid to flow only in one direction from the first pumping chamber 11 or the second pumping chamber 12 into the outlet tube 5.
When in use, the power mechanism 3 drives the piston mechanism 2 to reciprocate. When the piston mechanism 2 moves downwards, the first pump chamber 11 is compressed, the pressure in the first pump chamber 11 increases, and the difference between the internal pressure and the external pressure presses the check valve 6 communicated with the first discharge hole 41 on one hand and presses open the first feed hole 51 on the other hand, so that the raw material in the first pump chamber 11 flows out through the first feed hole 51. Meanwhile, the volume of the second pump chamber 12 is increased, the pressure is reduced, and the difference between the internal pressure and the external pressure compresses the check valve 6 communicated with the second inlet 52 on one hand and presses open the check valve 6 communicated with the second outlet 42 on the other hand, so that the raw material flows into the second pump chamber 12 through the second outlet 42. And the amount of the raw material flowing into the second pump chamber 12 is the same as the amount of the raw material flowing out of the first pump chamber 11.
When the piston mechanism 2 moves upwards, the second pump chamber 12 is compressed, the pressure in the second pump chamber 12 is positive, and the difference between the internal pressure and the external pressure presses the check valve 6 communicated with the second discharge hole 42 on one hand and presses open the second feed hole 52 on the other hand, so that the raw material in the second pump chamber 12 flows out through the second feed hole 52. Meanwhile, the volume of the first pump chamber 11 is increased, the pressure is reduced, and the difference between the internal pressure and the external pressure compresses the check valve 6 communicated with the first feed port 51 on one hand, and presses open the check valve 6 communicated with the first discharge port 41 on the other hand, so that the raw material flows into the first pump chamber 11 through the first discharge port 41. And the amount of the raw material flowing into the first pump chamber 11 is the same as the amount of the raw material flowing out of the second pump chamber 12. Thereby ensuring that the same volume is delivered when the first pump chamber 11 and the second pump chamber 12 are alternately fed.
Example two
Referring to fig. 2, in the present embodiment, the servo pump includes a pump body 1 ', a piston mechanism 2', a power mechanism 3 ', a feeding pipe 4', a discharging pipe 5 ', and four check valves 6'.
A column-shaped main cavity is formed in the pump body 1 ', the piston mechanism 2' comprises a partition plate 21 'and a connecting rod 22', the partition plate 21 'is arranged in the main cavity, the side edge of the partition plate 21' is abutted against the inner wall of the main cavity, the main cavity is divided into a first pump cavity 11 'and a second pump cavity 12' which are isolated from each other, one end of the connecting rod 22 'is fixedly connected with the partition plate 21', and the other end of the connecting rod passes through the pump body 1 'and is connected with the power output end of the power mechanism 3'. The axis of the connecting rod 22 'coincides with or is parallel to the axis of the main cavity and is connected with the pump body 1' in a sliding and sealing way.
The power mechanism 3 ' is connected with the connecting rod 22 ' and drives the partition 21 ' to move synchronously in the main chamber, and simultaneously changes the volumes of the first pump chamber 11 ' and the second pump chamber 12 ', and the volume of the first pump chamber 11 ' is changed by the same amount as the volume of the second pump chamber 12 '. That is, when the volume of the first pumping chamber 11 'is decreased, the volume of the second pumping chamber 12' is increased, and the volume of the first pumping chamber 11 'is decreased by an amount equal to the volume of the second pumping chamber 12'. Conversely, when the volume of the first pumping chamber 11 'increases, the volume of the second pumping chamber 12' decreases, and the volume of the first pumping chamber 11 'increases by an amount equal to the amount by which the volume of the second pumping chamber 12' decreases. In this embodiment, the power mechanism 3' employs a hydraulic cylinder to provide sufficient and stable push-pull force.
The feed tube 4 ' includes a first discharge port 41 ' and a second discharge port 42 ', the first discharge port 41 ' communicating with the first pumping chamber 11 ' through the check valve 6 ', the second discharge port 42 ' communicating with the second pumping chamber 12 ' through the check valve 6 ', the check valve 6 ' allowing fluid to flow from the feed tube 4 ' into the first pumping chamber 11 ' or the second pumping chamber 12 ' only in one direction.
The outlet tube 5 ' comprises a first inlet opening 51 ' and a second inlet opening 52 ', the first inlet opening 51 ' being connected to the first pumping chamber 11 ' via the non-return valve 6 ', the second inlet opening 52 ' being connected to the second pumping chamber 12 ' via the non-return valve 6 ', the non-return valve 6 ' allowing a unidirectional fluid flow only from the first pumping chamber 11 ' or the second pumping chamber 12 ' into the outlet tube 5 '.
When in use, the power mechanism 3 'drives the piston mechanism 2' to reciprocate. When the partition 21 'moves upward, the first pump chamber 11' is compressed, and the pressure in the first pump chamber 11 'is increased, and the difference in internal and external pressures presses the check valve 6' communicating with the first discharge port 41 'on the one hand, and presses the first feed port 51' on the other hand, so that the raw material in the first pump chamber 11 'flows out through the first feed port 51'. At the same time, the volume of the second pump chamber 12 ' is increased, the pressure is decreased, and the difference between the internal pressure and the external pressure presses the check valve 6 ' connected to the second inlet 52 ' on the one hand and presses the check valve 6 ' connected to the second outlet 42 ' on the other hand, so that the raw material flows into the second pump chamber 12 ' through the second outlet 42 '. And the amount of material flowing into the second pump chamber 12 'is the same as the amount of material flowing out of the first pump chamber 11'.
When the piston means 2 'moves downwards, the second pump chamber 12' is compressed, the pressure in the second pump chamber 12 'is positive, and the difference between the internal pressure and the external pressure presses the one-way valve 6' communicating with the second discharge port 42 'on the one hand, and presses the second feed port 52' on the other hand, so that the raw material in the second pump chamber 12 'flows out through the second feed port 52'. Meanwhile, the volume of the first pump chamber 11 ' is increased, the pressure is reduced, and the difference between the internal pressure and the external pressure presses the check valve 6 ' communicated with the first feed port 51 ' on the one hand and presses the check valve 6 ' communicated with the first discharge port 41 ' on the other hand, so that the raw material flows into the first pump chamber 11 ' through the first discharge port 41 '. And the amount of material flowing into the first pump chamber 11 'is the same as the amount of material flowing out of the second pump chamber 12'. Thereby ensuring that the first pump chamber 11 'and the second pump chamber 12' are fed alternately with the same output.
Implement the embodiment of the utility model provides a, following beneficial effect has: the servo pump comprises a first pump chamber and a second pump chamber with variable volumes, the sum of the volumes of the first pump chamber and the second pump chamber is kept constant, and when a power mechanism drives a piston mechanism to move so as to simultaneously change the volumes of the first pump chamber and the second pump chamber, the volume of one pump chamber reduced is the volume of the other pump chamber increased, so that the pump output is the same when the two pump chambers alternately pump raw materials outwards.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (6)
1. A servo pump, characterized in that it comprises: the pump comprises a pump body, a piston mechanism, a power mechanism, a feeding pipe, a discharging pipe and four one-way valves, wherein the piston mechanism is movably connected with the pump body, the piston mechanism and the pump body surround to form a first pump cavity and a second pump cavity with variable volumes, the sum of the volumes of the first pump cavity and the second pump cavity is kept constant, the power mechanism is in transmission connection with the piston mechanism, and the power mechanism drives the piston mechanism to move so as to change the volumes of the first pump cavity and the second pump cavity simultaneously; the feeding pipe comprises a first discharge hole and a second discharge hole, the first discharge hole is communicated with the first pump cavity through a one-way valve, the second discharge hole is communicated with the second pump cavity through a one-way valve, and the one-way valve enables fluid to flow into the first pump cavity or the second pump cavity from the feeding pipe in one way only; the discharging pipe comprises a first feeding hole and a second feeding hole, the first feeding hole is communicated with the first pump cavity through the one-way valve, the second feeding hole is communicated with the second pump cavity through the one-way valve, and the one-way valve enables fluid to flow into the discharging pipe from the first pump cavity or the second pump cavity in a one-way mode.
2. The servo pump according to claim 1, wherein a first cylindrical cavity groove and a second cylindrical cavity groove are respectively formed at two ends of the pump body, an axis of the first cavity groove is parallel to or coincident with an axis of the second cavity groove, the piston mechanism comprises a piston main body, and a first piston rod and a second piston rod which are fixedly connected with the piston main body, the first piston rod is inserted into the first cavity groove and surrounds the first cavity groove to form the first pump cavity, and the second piston rod is inserted into the second cavity groove and surrounds the second cavity groove to form the second pump cavity.
3. A servo pump according to claim 2, wherein the first cavity is substantially the same size as the second cavity.
4. The servo pump as claimed in claim 1, wherein a column-shaped main chamber is formed in the pump body, the piston mechanism includes a partition and a connecting rod, the partition is disposed in the main chamber and has a side abutting against an inner wall of the main chamber to separate the main chamber into the first pump chamber and the second pump chamber, one end of the connecting rod is fixedly connected to the partition, and the other end of the connecting rod passes through the pump body to be connected to a power output end of the power mechanism.
5. A servo pump according to claim 4, wherein the axis of the connecting rod coincides with or is parallel to the axis of the main chamber.
6. A servo pump according to claim 3 or 5, wherein the power mechanism is a hydraulic ram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069759.9U CN213807949U (en) | 2020-09-18 | 2020-09-18 | Servo pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022069759.9U CN213807949U (en) | 2020-09-18 | 2020-09-18 | Servo pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213807949U true CN213807949U (en) | 2021-07-27 |
Family
ID=76954300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022069759.9U Active CN213807949U (en) | 2020-09-18 | 2020-09-18 | Servo pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213807949U (en) |
-
2020
- 2020-09-18 CN CN202022069759.9U patent/CN213807949U/en active Active
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