CN211397787U

CN211397787U - Trace ceramic metering pump

Info

Publication number: CN211397787U
Application number: CN201922115719.0U
Authority: CN
Inventors: 陈铬; 冯广超
Original assignee: Xinxiang Dachang Precision Ceramic Technology Co ltd
Current assignee: Xinxiang Dachang Precision Ceramic Technology Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-09-01
Anticipated expiration: 2029-11-29

Abstract

The utility model belongs to a micro ceramic metering pump; the pump comprises a first pump body and a second pump body arranged at the bottom of the first pump body, wherein a liquid outlet and a liquid inlet are formed in the top of the first pump body, a valve core is arranged in the first pump body, a first liquid passing pipeline and a second liquid passing pipeline are respectively formed in the valve core, and the interiors of the first liquid passing pipeline and the second liquid passing pipeline are communicated; the top of the second pump body is provided with a cavity, a piston is arranged in the cavity, and the outer end part of the piston is connected with a direct current stepping motor with a PLC control system; the device has the advantages of simple and reasonable structural design, adoption of ceramic materials, no pollution of media and no chemical reaction, high precision, long service life, no leakage of filling liquid and trace filling.

Description

Trace ceramic metering pump

Technical Field

The utility model belongs to the technical field of the fluid trace filling, concretely relates to trace ceramic measuring pump.

Background

In the fields of daily necessities, medicines, foods and the like, fluid filling equipment is generally required to be used for filling, but the prior filling equipment has the following defects: 1. the filling unit of a common ceramic metering pump in the market is milliliter, and the error is large; 2. some enterprises produce trace stainless steel filling pumps, but the metal pumps have low hardness, poor wear resistance and corrosion resistance, are not high temperature resistant, and are easy to cause pollution to measured liquid; in the actual use process, the metal pump needs to be replaced frequently, so that the production cost is increased, the efficiency is low, and the requirements of the existing market cannot be met; 3. the valve core in most filling metering pumps in the prior art adopts a drawing structure, and the structure easily causes the defects that the outer surface of the valve core carries filling liquid, the valve core is easily blocked in the motion process, the valve core is easily damaged and the metering is inaccurate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art and provide a structural design simple reasonable, adopt ceramic material have the medium pollution-free with do not take place the characteristics of chemical reaction, and can realize that the precision is high, long service life, no filling liquid leaks and realize the trace ceramic measuring pump of trace filling.

The purpose of the utility model is realized like this: the pump comprises a first pump body and a second pump body arranged at the bottom of the first pump body, wherein a liquid outlet and a liquid inlet are formed in the top of the first pump body, a valve core is arranged in the first pump body, a first liquid passing pipeline and a second liquid passing pipeline are respectively formed in the valve core, and the interiors of the first liquid passing pipeline and the second liquid passing pipeline are communicated; the top of the second pump body is provided with a cavity, a piston is arranged in the cavity, and the outer end part of the piston is connected with a direct current stepping motor with a PLC control system.

Preferably, the liquid outlet and the liquid inlet are respectively provided with an auxiliary pipeline, and the outlet of the auxiliary pipeline is respectively matched with the inlets of the first liquid passing pipeline and the second liquid passing pipeline.

Preferably, the periphery of the top of the first pump body is respectively connected with the second pump body through fastening bolts, and the liquid outlet and the liquid inlet are respectively arranged at the middle position of the top of the first pump body.

Preferably, the two ends of the valve core are respectively provided with a valve core end cover, and a first shaft sealing ring is arranged between the valve core end cover and the first pump body.

Preferably, the bottom of the second pump body is provided with a piston end cover sleeved outside the piston, and a sealing ring for a second shaft is arranged between the piston end cover and the second pump body.

Preferably, a silica gel ring is arranged between the cavity inside the first pump body and the cavity inside the second pump body.

Preferably, the included angle between the first liquid passing pipeline and the second liquid passing pipeline is 90 degrees.

Preferably, when the first liquid passing pipeline is communicated with the liquid outlet, the second liquid passing pipeline is communicated with a cavity at the top of the second pump body; when the second liquid passing pipeline is communicated with the liquid inlet, the first liquid passing pipeline is communicated with the cavity at the top of the second pump body.

Preferably, the valve core and the piston are both made of ceramic materials.

Preferably, the diameter of the piston is 5 mm.

The utility model has the advantages of structural design is simple reasonable, adopt ceramic material have the medium pollution-free with do not take place chemical reaction's characteristics, and can realize that the precision is high, long service life, no filling liquid leaks and realize the micro-filling.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the top of the first pump body of the present invention.

Fig. 3 is a schematic structural view of the utility model when discharging liquid.

Fig. 4 is a schematic structural diagram of the liquid feeding device of the present invention.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, in which like reference numerals refer to like parts in the drawings. For the sake of simplicity, only the parts related to the utility model are schematically shown in the drawings, and they do not represent the actual structure as a product.

As shown in fig. 1, 2, 3, and 4, the utility model relates to a micro ceramic metering pump, which comprises a first pump body 1 and a second pump body 6 arranged at the bottom of the first pump body 1, wherein a liquid outlet 2 and a liquid inlet 3 are arranged at the top of the first pump body 1, a valve core 4 is arranged inside the first pump body 1, a first liquid passing pipeline 7 and a second liquid passing pipeline 8 are respectively arranged on the valve core 4, and the interiors of the first liquid passing pipeline 7 and the second liquid passing pipeline 8 are communicated; the top of the second pump body 6 is provided with a cavity, a piston 17 is arranged in the cavity, and the outer end part of the piston 17 is connected with a direct current stepping motor 10 with a PLC control system 9. The utility model can realize the control of the DC stepping motor 10 by arranging the PLC control system 9 so as to achieve the purpose of controlling the displacement of the piston 17, and realize the micro-filling of the fluid by controlling the displacement of the piston 17; additionally, the utility model discloses break the operational mode of 4 pull formulas of traditional case, changed into the operational mode when 4 rotations of case, made first liquid pipeline 7 and second liquid pipeline 8 of crossing keep one of them and the cavity of the second pump body 6 to be linked together all the time to realize extraction and the filling to the fluid.

Further, the liquid outlet 2 and the liquid inlet 3 are respectively provided with an auxiliary pipeline 16, and the outlet of the auxiliary pipeline 16 is respectively matched with the inlets of the first liquid passing pipeline 7 and the second liquid passing pipeline 8. The provision of the auxiliary line 16 enables the valve slide 4 to be filled in three dimensions in a rotating operating mode.

Further, the top of the first pump body 1 is connected with the second pump body 6 through fastening bolts 11 at the periphery, and the liquid outlet 2 and the liquid inlet 3 are respectively arranged at the middle position of the top of the first pump body 1. Through setting up fastening bolt 11 not only can make the structure between the first pump body 1 and the second pump body 6 firm more reliable and realize compact structure's purpose, and set up liquid outlet 2 and inlet 3 and can reach the purpose of making things convenient for the filling under the circumstances of guaranteeing equipment normal operating at the top of the first pump body 1.

Further, two ends of the valve core 4 are respectively provided with a valve core end cover 5, and a first shaft seal ring 12 is arranged between the valve core end cover 5 and the first pump body 1. Can realize the fixed to case 4 through above-mentioned structure, and can realize the sealed of convection cell through sealing washer 12 for the primary shaft when making things convenient for case 4 to rotate to reach the mesh that prevents to run and fall the water clock phenomenon and take place.

Further, a piston end cover 13 sleeved outside the piston 17 is arranged at the bottom of the second pump body 6, and a second shaft sealing ring 14 is arranged between the piston end cover 13 and the second pump body 6. Can realize the fixed to piston 17 through above-mentioned structure, and can realize the sealed of convection cell through sealing washer 14 for the second shaft when making things convenient for piston 17 to pull to reach the mesh that prevents to run and fall the hourglass phenomenon and take place.

Further, a silicone ring 15 is arranged between the cavity inside the first pump body 1 and the cavity inside the second pump body 6. Prevent through setting up silicon rubber ring 15 that the fluid from releasing and revealing, can realize the inseparable fixed of first pump body 1 and second pump body 6 under the prerequisite of not damaging first pump body 1 and second pump body 6 simultaneously.

Further, the included angle between the first liquid passing pipe 7 and the second liquid passing pipe 8 is 90 °. The utility model discloses in liquid outlet 2 and inlet 3 be equipped with auxiliary pipeline 16 respectively, contained angle between the terminal of auxiliary pipeline 16 and the cavity at 6 tops of the second pump body is 90 in liquid outlet 2, contained angle between the terminal of auxiliary pipeline 16 in the cavity at 6 tops of the second pump body and inlet 3 is 90 to the purpose of contained angle looks adaptation between realization and first liquid pipeline 7 and the second liquid pipeline 8 of crossing.

Further, when the first liquid passing pipeline 7 is communicated with the liquid outlet 2, the second liquid passing pipeline 8 is communicated with the cavity at the top of the second pump body 6; when the second liquid passing pipeline 8 is communicated with the liquid inlet 3, the first liquid passing pipeline 7 is communicated with the cavity at the top of the second pump body 6. In the structure, when the liquid outlet 2 or the liquid inlet 3 is communicated with the first liquid passing pipeline 7 or the second liquid passing pipeline 8, an auxiliary pipeline mode is adopted; namely, when the liquid outlet 2 is communicated with the cavity at the top of the second pump body 6, the cavity at the top of the second pump body 6 is not communicated with the liquid inlet 3; when the cavity at the top of the liquid inlet 3 and the cavity at the top of the second pump body 6 are communicated, the cavity at the top of the second pump body 6 is not communicated with the liquid outlet 2.

Further, the valve core 4 and the piston 17 are made of ceramic materials. The utility model discloses well all adopt ceramic material with the part of fluid contact to reach the purpose that prevents fluid pollution and fluid and part take place chemical reaction.

Further, the diameter of the piston 17 is 5 mm. The purpose of realizing accurate filling is achieved by adopting a piston with a small diameter.

The utility model discloses a theory of operation does: the valve core 4 rotates to enable the second liquid passing pipeline 8 to be communicated with the liquid inlet 3, meanwhile, the first liquid passing pipeline 7 is communicated with a cavity at the top of the second pump body 6, the piston 17 moves downwards under the driving of the direct current stepping motor 10, and fluid enters the cavities at the tops of the first liquid passing pipeline 7, the second liquid passing pipeline 8 and the second pump body 6 from the liquid inlet 3; the valve core 4 rotates continuously to enable the first liquid passing pipeline 7 to be communicated with the liquid outlet 2, the second liquid passing pipeline 8 is communicated with the cavity at the top of the second pump body 6, meanwhile, the PLC control system 9 controls the direct current stepping motor 10 to operate to achieve the purpose of controlling the displacement of the piston 17, and when the piston 17 upwards and understands the fluid in the cavities at the top of the first liquid passing pipeline 7, the second liquid passing pipeline 8 and the second pump body 6 enters the container to be filled through the liquid outlet 2. In the process, the valve core 4 rotates, and the piston 17 can be filled by drawing, so that the valve core 4 is prevented from carrying fluid, the defect that the valve core 4 is blocked or the service life is influenced due to overlarge movement is also avoided, and the micro-filling of the fluid can be realized by the PLC control system 9, the rotary operation form of the valve core 4 and the piston with a small diameter; preferably, the valve core of the present invention adopts a forward and reverse rotation mode.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "provided with", "connected" and the like are to be interpreted broadly, and may be, for example, fixedly connected, integrally connected, or detachably connected; or communication between the interior of the two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation. The above is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structure changes made in the contents of the specification and the drawings, or directly or indirectly applied to other related fields are all within the protection scope of the present invention.

Claims

1. A trace ceramic metering pump, characterized by: the metering pump comprises a first pump body (1) and a second pump body (6) arranged at the bottom of the first pump body (1), wherein a liquid outlet (2) and a liquid inlet (3) are arranged at the top of the first pump body (1), a valve core (4) is arranged inside the first pump body (1), a first liquid passing pipeline (7) and a second liquid passing pipeline (8) are respectively arranged on the valve core (4), and the interiors of the first liquid passing pipeline (7) and the second liquid passing pipeline (8) are communicated;

the top of the second pump body (6) is provided with a cavity, a piston (17) is arranged in the cavity, and the outer end part of the piston (17) is connected with a direct current stepping motor (10) with a PLC control system (9).

2. A trace ceramic metering pump as set forth in claim 1, wherein: the liquid outlet (2) and the liquid inlet (3) are respectively provided with an auxiliary pipeline (16), and the outlet of the auxiliary pipeline (16) is respectively matched with the inlets of the first liquid passing pipeline (7) and the second liquid passing pipeline (8).

3. A trace ceramic metering pump as set forth in claim 1, wherein: the top of the first pump body (1) is connected with the second pump body (6) through fastening bolts (11) all around, and the liquid outlet (2) and the liquid inlet (3) are respectively arranged at the middle position of the top of the first pump body (1).

4. A trace ceramic metering pump as set forth in claim 1, wherein: and valve core end covers (5) are respectively arranged at two ends of the valve core (4), and a first shaft sealing ring (12) is arranged between the valve core end covers (5) and the first pump body (1).

5. A trace ceramic metering pump as set forth in claim 1, wherein: and a piston end cover (13) sleeved outside the piston (17) is arranged at the bottom of the second pump body (6), and a sealing ring (14) for a second shaft is arranged between the piston end cover (13) and the second pump body (6).

6. A trace ceramic metering pump as set forth in claim 1, wherein: and a silica gel ring (15) is arranged between the first pump body (1) and the cavity inside the second pump body (6).

7. A trace ceramic metering pump as set forth in claim 1, wherein: the included angle between the first liquid passing pipeline (7) and the second liquid passing pipeline (8) is 90 degrees.

8. A trace ceramic metering pump according to claim 1 or 7, characterized in that: when the first liquid passing pipeline (7) is communicated with the liquid outlet (2), the second liquid passing pipeline (8) is communicated with a cavity at the top of the second pump body (6);

when the second liquid passing pipeline (8) is communicated with the liquid inlet (3), the first liquid passing pipeline (7) is communicated with the cavity at the top of the second pump body (6).

9. A trace ceramic metering pump as set forth in claim 1, wherein: the valve core (4) and the piston (17) are made of ceramic materials.

10. A trace ceramic metering pump as set forth in claim 1, wherein: the diameter of the piston (17) is 5 mm.