CN218454799U - Novel filling metering pump - Google Patents
Novel filling metering pump Download PDFInfo
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- CN218454799U CN218454799U CN202222182812.5U CN202222182812U CN218454799U CN 218454799 U CN218454799 U CN 218454799U CN 202222182812 U CN202222182812 U CN 202222182812U CN 218454799 U CN218454799 U CN 218454799U
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- rotary valve
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Abstract
The utility model relates to the technical field of metering pumps, and discloses a novel filling metering pump, which comprises a plunger pump sleeve, a rotary valve core and a metering rod, wherein the rotary valve core is arranged in the plunger pump sleeve, the rotary valve core is inserted into one end in the plunger pump sleeve, the metering rod is inserted into the other end of the rotary valve core, one end of the plunger pump sleeve is a rotary valve end, the other end of the plunger pump sleeve is a volume metering end, a rotary valve sleeve sealing surface is arranged in the rotary valve end, and a volume metering sealing surface is arranged in the volume metering end; and a liquid inlet and a liquid outlet are formed in the outer cylindrical surface of the rotary valve end. The invention solves the technical problems by designing the liquid inlet and outlet on the circumferential surfaces with different heights, is convenient to install and operate, obtains a more reliable sealing surface, reduces filling metering deviation, avoids the phenomenon of bubble accumulation, avoids the problem that two holes are not sealed because the two holes are worn and scratched on the same plane, and prolongs the service life of the filling pump.
Description
Technical Field
The utility model relates to a measuring pump technical field specifically is a novel filling measuring pump.
Background
The filling pump is divided into a peristaltic pump, a magnetic pump, a metering pump, a plunger pump, a vacuum pump, a gear pump, a ceramic pump, a glass pump and the like, the metering pump is mainly applied to filling and metering of fluids such as liquid, paste and the like, and is used in precise filling and metering in the industries such as medicine, cosmetics, food, beverage, chemical engineering, medical treatment and the like,
because the plunger sleeve and the rotary valve core on the metering pump assembly on the market at present are designed with a liquid inlet and a liquid outlet on the same section of a cylinder, and are too close to the metering pump and a mechanical fixed part, interference can occur on installation, the operation is inconvenient, and when the filling metering capacity is actively small, the diameter of the pump is smaller generally; when the diameter is small, the distance between two holes on the circumference is small; the technical defect that the sealing surface is too small exists, two holes are formed in the same section of the cylinder, the cylinder is easy to wear, and the service life of a product is short; meanwhile, the phenomenon of liquid leakage after shutdown occurs; because two holes are on the same cross section, bubble accumulation phenomenon generated in the suction process is easy to occur, a large bubble is discharged occasionally, and the filling metering deviation is overlarge.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a novel filling measuring pump to solve the problem of current technical seal nature defect.
(II) technical scheme
In order to achieve the above purpose, the utility model provides a following technical scheme: a novel filling metering pump comprises a plunger pump sleeve, a rotary valve core and a metering rod, wherein the rotary valve core is arranged in the plunger pump sleeve, the rotary valve core is inserted into one end of the plunger pump sleeve, the metering rod is inserted into the other end of the rotary valve core, one end of the plunger pump sleeve is a rotary valve end, the other end of the plunger pump sleeve is a volume metering end, a rotary valve sleeve sealing surface is arranged in the rotary valve end, and a volume metering sealing surface is arranged in the volume metering end; the rotary valve is characterized in that a liquid inlet and a liquid outlet are arranged on the outer cylindrical surface of the rotary valve end, and the distance between the liquid inlet and the end surface of the rotary valve end is larger than the distance between the liquid outlet and the end surface of the rotary valve end.
Further, the liquid inlet and the liquid outlet are not in the same section.
Further, the liquid inlet and the liquid outlet form a certain included angle, and the degree of the included angle is 45 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees or 180 degrees.
Furthermore, the rotary valve end is also provided with a pump sleeve connecting and fixing structure.
Furthermore, the end part of the rotary valve core is provided with a connecting part connected with a mechanical drive, the other end surface of the rotary valve core is provided with a small blind hole of a liquid channel,
furthermore, the side surface of the rotary valve core is respectively provided with two side holes, namely a rotary valve core liquid inlet aligned with the liquid inlet and a rotary valve core liquid outlet aligned with the liquid outlet; after the rotary valve core is arranged in the plunger pump sleeve, the rotary valve core is driven by power to rotate for a certain angle, so that the liquid outlet and the liquid inlet of the rotary valve end at the upper end are switched, and the switching function of the rotary valve is realized.
Furthermore, the outer surface of the metering rod is a smooth sealing surface of the metering rod, and the bottom end of the metering rod is a second connecting part for driving.
Compared with the prior art, the utility model provides a novel filling measuring pump possesses following beneficial effect: the invention solves the technical problems by designing the liquid inlet and outlet on the circumferential surfaces with different heights, is convenient to install and operate, obtains a more reliable sealing surface, reduces filling metering deviation, avoids the phenomenon of bubble accumulation, avoids the problem that two holes are not sealed because the two holes are worn and scratched on the same plane, and prolongs the service life of the filling pump. The problem of current plunger filling measuring pump structure be not convenient for installation operation, leakproofness defect is solved, can in time discharge the bubble and do not produce the bubble and gather, improved filling measurement accuracy, prolonged the life of filling pump.
Drawings
Fig. 1 is a schematic structural view of a novel filling metering pump plunger pump sleeve of the present invention;
fig. 2 is a schematic structural diagram of a rotary valve core of a novel filling metering pump of the present invention;
fig. 3 is a schematic structural view of a metering rod of the novel filling metering pump of the present invention;
fig. 4 is a schematic structural view of the novel filling metering pump with an included angle of 90 ° between the liquid inlet and the liquid outlet;
fig. 5 is a schematic structural view of the novel filling metering pump of the present invention, wherein an included angle between the liquid inlet and the liquid outlet is 180 degrees;
wherein: 1. the plunger pump comprises a plunger pump sleeve, 2-a rotary valve core, 3-a metering rod, 4-a rotary valve end, 5-a volume metering end, 6-a liquid inlet, 7-a liquid outlet, 8-a rotary valve sleeve sealing surface, 9-a volume metering sealing surface, 10-a pump sleeve connecting and fixing structure, 11-a cylindrical valve core sealing surface, 12-a small blind hole, 13-a rotary valve core liquid inlet, 14-a rotary valve core liquid outlet at the upper end, 15-a connecting part for connecting a rotary valve core and a mechanical drive, 16-a plunger rod, 17-a second connecting part for connecting the metering rod and the drive, and 18-included angles.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
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, and are only for convenience of description and simplification of description, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1-5, the product of the present invention, a novel filling metering pump, is composed of three parts, which are respectively a plunger pump sleeve 1, a rotary valve core 2, a metering rod 3,
a rotary valve core 2 is arranged in the plunger pump sleeve 1,
as shown in fig. 1, the plunger pump sleeve 1 is cylindrical, the rotary valve core 2 is inserted into one end of the plunger pump sleeve 1, the metering rod 3 is inserted into the other end of the rotary valve core 2, the rotary valve end 4 is arranged at one end of the plunger pump sleeve 1, the volume metering end 5 is arranged at the other end of the plunger pump sleeve 1, the rotary valve sleeve sealing surface 8 is arranged in the rotary valve end 4, and the volume metering sealing surface 9 is arranged in the volume metering end 5. Be provided with inlet 6 and liquid outlet 7 on the outer face of cylinder of rotary valve end 4, the distance of inlet 6 and 4 terminal surfaces of rotary valve end is greater than the distance of liquid outlet 7 apart from 4 terminal surfaces of rotary valve end. The liquid inlet 6 and the liquid outlet 7 are not in the same section. The liquid inlet 6 and the liquid outlet 7 form a certain included angle, and the degree of the included angle is 45 degrees, 60 degrees, 90 degrees (as shown in fig. 4), 120 degrees, 135 degrees, 180 degrees (as shown in fig. 5) and the like.
The rotary valve end 4 is also provided with a pump sleeve connecting and fixing structure 10.
Two liquid nozzle openings are arranged on the outer cylinder of the rotary valve end 4, and are respectively a liquid inlet 6 with a lower position and a liquid outlet 7 with an upper position, the two outlets are not arranged on the same cross section and keep a certain distance, and a certain included angle is formed between the two outlets (such as 45 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees, 180 degrees and the like, and the included angle of the model in the utility model is 90 degrees or 180 degrees);
and a pump sleeve connecting and fixing structure 10 which is mechanically installed and fixed and is cylindrical, and the volume metering end 5 is provided with a volume metering sealing surface 9 which is processed with high precision and has excellent smooth finish and cylinder. The inner hole diameters of the rotary valve end 4 and the volume metering end 5 are designed according to the volume to be filled and metered, and can be large or small, and can also be equal in diameter.
The end of the rotary valve core 2 is provided with a connecting part 15 connected with a mechanical drive, as shown in fig. 2, the upper and lower parts of the connecting part are provided with holes, and the middle part of the connecting part is provided with a groove, so that bolts can be inserted through the holes to be fixed with external equipment.
The other end face of the rotary valve core 2 is provided with a small blind hole 12 of a liquid channel, the tail end of the small blind hole 12 reaches a liquid outlet 14 of the rotary valve core, as shown in figure 2, the small blind hole 12 is connected with a liquid inlet 13 of the rotary valve core in a penetrating way,
the side surface of the rotary valve core 2 is respectively provided with two side holes, namely a rotary valve core liquid inlet 13 aligned with the liquid inlet 6 and a rotary valve core liquid outlet 14 aligned with the liquid outlet 7; after the rotary valve core 2 is arranged in the plunger pump sleeve 1, the rotary valve core is driven by power to rotate for a certain angle, so that the switch switching of the liquid outlet 7 and the liquid inlet 6 of the rotary valve end 4 at the upper end is realized, and the switching function of the rotary valve is realized.
The rotary valve core 2 is divided into two parts: the upper part of the rotary valve core 2 is provided with a connecting part 15 (with various structural forms) connected with a mechanical drive;
the other part is a cylindrical valve core sealing surface 11 which is processed with high precision and has excellent cylindricity and extremely high finish, a small blind hole 12 matched with flow is arranged in the center of the cylinder, two side holes are respectively arranged on the side surface of the cylinder, a rotary valve core liquid inlet 13 is arranged at the lower end of the cylinder, and a rotary valve core liquid outlet 14 is arranged at the upper end of the cylinder;
the distance and the position of the rotary valve core liquid inlet 13 and the rotary valve core liquid outlet 14 are respectively matched with the pump sleeve liquid inlet 6 and the pump sleeve liquid outlet 7 (the distances are equal, and the angles are the same, such as 90 degrees, 120 degrees, 135 degrees, 180 degrees, and the like).
The outer surface of the metering rod 3 is a smooth metering rod sealing surface 16, and the bottom end of the metering rod is a second connecting part 17 for driving.
The metering rod 3 is a plunger rod 16 which is processed by ultra-high precision, and the lower end of the plunger rod 16 is provided with a second connecting part 17 connected with a power drive; the clearance between the plunger rod 16 and the volumetric metering sealing surface 9 is small, and the sealing performance is excellent.
When the liquid inlet 13 of the rotary valve core is communicated with the liquid inlet 6 of the rotary valve sleeve end 4, the metering rod 3 moves downwards to enlarge the volume of the cavity, generate negative pressure and suck liquid; the rotary valve core 2 rotates by a certain angle, so that the liquid inlet 14 of the rotary valve core is communicated with the liquid outlet 7 of the rotary valve sleeve end 4, the cavity volume is compressed, negative pressure is generated, liquid is discharged, and therefore the function of the novel filling metering pump is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A novel filling metering pump comprises a plunger pump sleeve (1), a rotary valve core (2) and a metering rod (3), wherein the rotary valve core (2) is arranged in the plunger pump sleeve (1), the rotary valve core (2) is inserted into one end of the plunger pump sleeve (1), the metering rod (3) is inserted into the other end of the rotary valve core (2), one end of the plunger pump sleeve (1) is a rotary valve end (4), the other end of the plunger pump sleeve (1) is a volume metering end (5), a rotary valve sleeve sealing surface (8) is arranged in the rotary valve end (4), and a volume metering sealing surface (9) is arranged in the volume metering end (5); the liquid inlet is characterized in that a liquid inlet (6) and a liquid outlet (7) are arranged on an outer cylindrical surface of the rotary valve end (4), and the distance between the liquid inlet (6) and the end surface of the rotary valve end (4) is larger than the distance between the liquid outlet (7) and the end surface of the rotary valve end (4).
2. The new filling metering pump according to claim 1, characterized in that: the liquid inlet (6) and the liquid outlet (7) are not in the same section.
3. The new filling metering pump according to claim 1, characterized in that: the liquid inlet (6) and the liquid outlet (7) form a certain included angle, and the degree of the included angle is 45 degrees, 60 degrees, 90 degrees, 120 degrees, 135 degrees or 180 degrees.
4. The new filling metering pump according to claim 1, characterized in that: the rotary valve end (4) is also provided with a pump sleeve connecting and fixing structure (10).
5. The new filling metering pump according to claim 1, characterized in that: the end part of the rotary valve core (2) is provided with a connecting part (15) connected with a mechanical drive, and the other end surface of the rotary valve core (2) is provided with a small blind hole (12) of a liquid channel.
6. The new filling metering pump according to claim 1, characterized in that: the side surface of the rotary valve core (2) is respectively provided with two side holes, namely a rotary valve core liquid inlet (13) aligned with the liquid inlet (6) and a rotary valve core liquid outlet (14) aligned with the liquid outlet (7); after the rotary valve core (2) is arranged in the plunger pump sleeve (1), the rotary valve core is driven by power to rotate for a certain angle, so that the liquid outlet (7) of the upper end of the rotary valve end (4) is switched on and off through the liquid inlet (6), and the switching function of the rotary valve is realized.
7. The new filling metering pump according to claim 1, characterized in that: the metering rod (3) is provided with a metering rod sealing surface (16), and the bottom end of the metering rod is provided with a second connecting part (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222182812.5U CN218454799U (en) | 2022-08-18 | 2022-08-18 | Novel filling metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222182812.5U CN218454799U (en) | 2022-08-18 | 2022-08-18 | Novel filling metering pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218454799U true CN218454799U (en) | 2023-02-07 |
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ID=85121841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222182812.5U Active CN218454799U (en) | 2022-08-18 | 2022-08-18 | Novel filling metering pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218454799U (en) |
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2022
- 2022-08-18 CN CN202222182812.5U patent/CN218454799U/en active Active
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