CN220248336U - Single-cylinder constant flow pump device - Google Patents
Single-cylinder constant flow pump device Download PDFInfo
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- CN220248336U CN220248336U CN202321185593.4U CN202321185593U CN220248336U CN 220248336 U CN220248336 U CN 220248336U CN 202321185593 U CN202321185593 U CN 202321185593U CN 220248336 U CN220248336 U CN 220248336U
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- cylinder body
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- piston cylinder
- cover plate
- liquid
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- 239000007788 liquid Substances 0.000 claims abstract description 121
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 229910010293 ceramic material Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 20
- 239000007924 injection Substances 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000243 solution Substances 0.000 description 9
- 239000003792 electrolyte Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The utility model relates to a single-cylinder constant flow pump device, which comprises: the piston comprises a piston cylinder body, a piston shaft, a front cover plate and a rear cover plate. The first end of the piston shaft reciprocates in the piston cylinder, the front cover plate is fixed at the first end part of the piston cylinder in a sealing way, the rear cover plate is fixed at the second end part of the piston cylinder in a sealing way, and the second end part of the piston shaft penetrates out of the front cover plate to be connected with an external driver. The outer peripheral wall of the first end of the piston cylinder body is provided with a first liquid inlet and a first liquid outlet, and the outer peripheral wall of the second end of the piston cylinder body is provided with a second liquid inlet and a second liquid outlet. The first liquid inlet and the second liquid inlet are both connected with a first one-way valve of liquid flow direction towards the interior of the piston cylinder body, and the first liquid outlet and the second liquid outlet are both connected with a second one-way valve of liquid flow direction towards the exterior of the piston cylinder body. The single-cylinder constant flow pump device only needs one piston cylinder body, has simple and practical structure, greatly reduces manufacturing cost, has low failure rate, and improves the liquid injection efficiency by more than one time compared with the prior art.
Description
Technical Field
The utility model relates to the technical field of liquid injection pumps, in particular to a single-cylinder constant flow pump device.
Background
In the liquid injection procedure of lithium battery production and manufacture, a liquid injection pump is usually used, the current requirement on the liquid injection amount and the liquid injection efficiency of electrolyte is also higher along with the increasing of the capacity of a power battery, the liquid injection pump applied to the current market mainly comprises a few small-capacity ceramic pumps, particularly a few rotary pumps and piston pumps, the ceramic pumps can not absorb liquid and drain liquid at the same time, the liquid injection is separated, the liquid injection efficiency is low, the efficiency can not be improved through the existing structure, and the liquid injection pump is only suitable for small-capacity batteries.
There are also some companies producing constant flow pumps to solve the problem of liquid injection interval, the theory of the constant flow pumps is derived from the multi-cylinder principle of an automobile engine, and the constant flow is realized by alternately sucking and discharging liquid through a plurality of piston shafts so as to eliminate the liquid injection interval. Although the liquid injection efficiency of the constant flow pump is improved, complex parts such as a crankshaft and the like are needed, the manufacturing cost is high, the fault probability is increased by a plurality of piston shafts, and the liquid injection requirement of the high-capacity battery for reducing the cost and enhancing the efficiency still cannot be met.
Disclosure of Invention
The utility model provides a single-cylinder constant flow pump device which is used for solving the defects of the single-cylinder constant flow pump device in the prior art, and the single-cylinder constant flow pump device only needs one piston cylinder body, has a simple and practical structure, greatly reduces the manufacturing cost, has low failure rate, and improves the liquid injection efficiency by more than one time compared with the prior art.
The utility model provides a single-cylinder constant flow pump device, which comprises: the piston comprises a piston cylinder body (1), a piston shaft (2), a front cover plate (3) and a rear cover plate (4). The first end of the piston shaft (2) reciprocates in the piston cylinder body (1), the front cover plate (3) is fixed at the first end part of the piston cylinder body (1) in a sealing mode, the rear cover plate (4) is fixed at the second end part of the piston cylinder body (1) in a sealing mode, and the second end part of the piston shaft (2) penetrates out of the front cover plate (3) to be connected with an external driver. A first liquid inlet (7) and a first liquid outlet (8) are formed in the outer peripheral wall of the first end of the piston cylinder body (1), and a second liquid inlet (9) and a second liquid outlet (10) are formed in the outer peripheral wall of the second end of the piston cylinder body (1). The first liquid inlet (7) and the second liquid inlet (9) are both connected with a first one-way valve of liquid flow direction towards the interior of the piston cylinder body (1), and the first liquid outlet (8) and the second liquid outlet (10) are both connected with a second one-way valve of liquid flow direction towards the exterior of the piston cylinder body (1).
According to the single-cylinder constant flow pump device provided by the utility model, the piston cylinder body (1) comprises an inner cylinder body (1 a) and an outer cylinder body (1 b), the inner cylinder body (1 a) is made of a ceramic material, the outer cylinder body (1 b) is made of a stainless steel material, and the piston shaft (2) is made of a ceramic material.
According to the single-cylinder constant flow pump device provided by the utility model, the inner wall of the front cover plate (3) is provided with the first sealing piece (5) tightly attached to the piston shaft (2), and the outer wall of the piston shaft (2) is sleeved with the second sealing piece (6) tightly attached to the inner cylinder body (1 a).
According to the single-cylinder constant flow pump device provided by the utility model, the first sealing piece (5) and the second sealing piece (6) are both tetrafluoro sealing rings.
According to the single-cylinder constant flow pump device provided by the utility model, the front cover plate (3) and the rear cover plate (4) are detachably connected with the outer cylinder body (1 b) through screws.
According to the single-cylinder constant flow pump device provided by the utility model, the inner cylinder body (1 a) and the outer cylinder body (1 b) or the front cover plate (3) or the rear cover plate (4) are detachably fixed through the positioning piece.
According to the single-cylinder constant flow pump device provided by the utility model, the positioning piece is a positioning bolt or a positioning bulge.
According to the single-cylinder constant flow pump device provided by the utility model, the axes of the first liquid inlet (7), the second liquid inlet (9), the first liquid outlet (8) and the second liquid outlet (10) are all positioned in the same plane, the first liquid inlet (7) and the second liquid inlet (9) are positioned on one side of the central axis of the piston cylinder body (1), and the first liquid outlet (8) and the second liquid outlet (10) are positioned on the other side of the central axis of the piston cylinder body (1).
According to the single-cylinder constant flow pump device, the first liquid inlet (7) and the first liquid outlet (8) are formed in the outer peripheral wall of the first end of the piston cylinder body (1), and the second liquid inlet (9) and the second liquid outlet (10) are formed in the outer peripheral wall of the second end of the piston cylinder body (1). And the first liquid inlet (7) and the second liquid inlet (9) are connected with a first one-way valve of which the liquid flow direction is towards the interior of the piston cylinder body (1), and the first liquid outlet (8) and the second liquid outlet (10) are connected with a second one-way valve of which the liquid flow direction is towards the exterior of the piston cylinder body (1). When the piston shaft (2) is driven by an external driver to reciprocate in the piston cylinder body (1), the piston cylinder body (1) is in a continuous liquid suction and discharge state, so that constant-flow liquid injection is realized through a single piston cylinder body (1). The single-cylinder constant flow pump device only needs one piston cylinder body (1), has a simple and practical structure, greatly reduces manufacturing cost, has low failure rate, and improves the liquid injection efficiency by more than one time compared with the prior art.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a cross-sectional structure of a single-cylinder constant flow pump device provided by the utility model.
Reference numerals:
1: a piston cylinder; 1a: an inner cylinder; 1b: an outer cylinder; 2: a piston shaft; 3: a front cover plate; 4: a back cover plate; 5: a first seal; 6: a second seal; 7: a first liquid inlet; 8: a first liquid outlet; 9: a second liquid inlet; 10: and a second liquid outlet.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the term "connected" is to be interpreted broadly, and for example, it may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.
In the examples herein, a first feature "on" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intermediary, unless expressly stated and defined otherwise. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
An embodiment of the present utility model is described below with reference to fig. 1. It should be understood that the following description is only illustrative of embodiments of the utility model and is not intended to limit the utility model in any way.
As shown in fig. 1, as an embodiment of the present utility model, an embodiment of the present utility model provides a single-cylinder constant flow pump device, including: a piston cylinder 1, a piston shaft 2, a front cover plate 3 and a rear cover plate 4. The first end of the piston shaft 2 reciprocates in the piston cylinder 1, the front cover plate 3 is fixed at the first end part of the piston cylinder 1 in a sealing way, the rear cover plate 4 is fixed at the second end part of the piston cylinder 1 in a sealing way, and the second end part of the piston shaft 2 penetrates out of the front cover plate 3 to be connected with an external driver. Wherein, the inner wall of the front cover plate 3 is provided with a first sealing element 5 closely attached to the piston shaft 2, and the outer wall of the piston shaft 2 is sleeved with a second sealing element 6 closely attached to the inner cylinder body 1a, so as to improve the sealing performance of the matched part. Wherein the drive may be an electric motor or a cylinder or a motor.
In some embodiments of the present utility model, the piston cylinder 1 includes an inner cylinder 1a and an outer cylinder 1b, the inner cylinder 1a is made of a ceramic material, the outer cylinder 1b is made of a stainless steel material, and the piston shaft 2 is made of a ceramic material. The piston cylinder 1 thus manufactured has both sufficient strength and hardness and improved wear resistance when reciprocating with the piston shaft 2.
In some embodiments of the present utility model, the first sealing member 5 and the second sealing member 6 may be made of tetrafluoro sealing rings, which has good sealing performance, good wear resistance, low cost and high reliability.
In some embodiments of the present utility model, the front cover plate 3 and the rear cover plate 4 are detachably connected with the outer cylinder body 1b through screws, so that the piston cylinder body 1 and the piston shaft 2 are convenient to detach, the piston shaft 2 is convenient to detach periodically in a later period, and the second sealing element 6 on the piston shaft 2 is replaced, so that the piston shaft 2 is maintained periodically. Moreover, because the single-cylinder constant flow pump device only has one piston cylinder, compared with the prior art, the second sealing element 6 needs to be replaced and disassembled, and the working load of replacing the second sealing element 6 is greatly reduced.
In some embodiments of the present utility model, the inner cylinder 1a and the outer cylinder 1b are detachably fixed by a positioning member (not shown), or the inner cylinder 1a and the front cover plate 3 are detachably fixed by a positioning member (not shown), or the inner cylinder 1a and the rear cover plate 4 are detachably fixed by a positioning member (not shown), so that the fixation of the inner cylinder 1a is realized, and the inner cylinder 1a is prevented from rotating and shifting during long-term use.
In some embodiments of the utility model, the positioning piece adopts the existing positioning structure of the positioning bolt or the positioning protrusion, and the positioning piece is matched with the corresponding positioning groove of the positioning bolt or the positioning protrusion to realize positioning connection. The two positioning structures are convenient to manufacture and install.
The outer peripheral wall of the first end of the piston cylinder body 1 is provided with a first liquid inlet 7 and a first liquid outlet 8, and the outer peripheral wall of the second end of the piston cylinder body 1 is provided with a second liquid inlet 9 and a second liquid outlet 10. The first liquid inlet 7 and the second liquid inlet 9 are connected with a first check valve (not shown in the figure) for liquid flow direction towards the interior of the piston cylinder 1, and the first liquid outlet 8 and the second liquid outlet 10 are connected with a second check valve (not shown in the figure) for liquid flow direction towards the exterior of the piston cylinder 1.
In some embodiments of the present utility model, the axes of the first liquid inlet 7, the second liquid inlet 9, the first liquid outlet 8 and the second liquid outlet 10 are all located in the same plane, and the first liquid inlet 7 and the second liquid inlet 9 are located on one side of the central axis of the piston cylinder 1, and the first liquid outlet 8 and the second liquid outlet 10 are located on the other side of the central axis of the piston cylinder 1. The layout structure facilitates the connection of the constant flow pump with an external liquid supply device and an external liquid injection device, and the connection of the constant flow pump with a pipe is not needed due to the dislocation of two liquid inlets or liquid outlets.
The working principle of the single-cylinder constant flow pump device provided by the utility model is as follows:
when the piston shaft 2 moves from left to right, a negative pressure is formed in the left chamber in the piston cylinder 1, and a positive pressure is formed in the right chamber in the piston cylinder 1. Therefore, the first one-way valve connected with the first liquid inlet 7 is closed, the first one-way valve connected with the second liquid inlet 9 is opened, the second one-way valve connected with the first liquid outlet 8 is opened, and the second one-way valve connected with the second liquid outlet 10 is closed. In the process, electrolyte in the external liquid supply device enters the left side chamber in the piston cylinder body 1 through the second liquid inlet 9 under the action of negative pressure, and the electrolyte in the right side chamber in the piston cylinder body 1 flows out from the first liquid outlet 8 under the action of positive pressure.
When the piston shaft 2 moves from right to left, positive pressure is formed in the left chamber in the piston cylinder 1, and negative pressure is formed in the right chamber in the piston cylinder 1. Thus, the first one-way valve connected with the first liquid inlet 7 is opened, the first one-way valve connected with the second liquid inlet 9 is closed, the second one-way valve connected with the first liquid outlet 8 is closed, and the second one-way valve connected with the second liquid outlet 10 is opened. In this process, the electrolyte in the external liquid supply device enters the right chamber in the piston cylinder 1 through the first liquid inlet 7 under the action of negative pressure, and the electrolyte in the left chamber in the piston cylinder 1 flows out from the second liquid outlet 10 under the action of positive pressure.
The reciprocating is performed in such a way that the piston cylinder 1 is in a state of continuous liquid suction and liquid discharge, thereby realizing constant-flow liquid injection through a single piston cylinder 1. The single-cylinder constant flow pump device only needs one piston cylinder body 1, has simple and practical structure, greatly reduces manufacturing cost, has low failure rate, and improves the liquid injection efficiency by more than one time compared with the prior art.
It should be noted that, the technical solutions in the embodiments of the present utility model may be combined with each other, but the basis of the combination is based on the fact that those skilled in the art can realize the combination; when the combination of the technical solutions contradicts or cannot be realized, it should be considered that the combination of the technical solutions does not exist, i.e. does not fall within the scope of protection of the present utility model.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should be regarded as infringement solutions.
Claims (3)
1. A single cylinder constant flow pump apparatus comprising: a piston cylinder body (1), a piston shaft (2), a front cover plate (3) and a rear cover plate (4); the first end of the piston shaft (2) reciprocates in the piston cylinder body (1), the front cover plate (3) is fixed at the first end part of the piston cylinder body (1) in a sealing manner, the rear cover plate (4) is fixed at the second end part of the piston cylinder body (1) in a sealing manner, and the second end part of the piston shaft (2) penetrates out of the front cover plate (3) to be connected with an external driver; the piston cylinder is characterized in that a first liquid inlet (7) and a first liquid outlet (8) are formed in the outer peripheral wall of the first end of the piston cylinder body (1), and a second liquid inlet (9) and a second liquid outlet (10) are formed in the outer peripheral wall of the second end of the piston cylinder body (1); the first liquid inlet (7) and the second liquid inlet (9) are connected with a first one-way valve for enabling liquid to flow towards the interior of the piston cylinder body (1), and the first liquid outlet (8) and the second liquid outlet (10) are connected with a second one-way valve for enabling liquid to flow towards the exterior of the piston cylinder body (1);
the piston cylinder body (1) comprises an inner cylinder body (1 a) and an outer cylinder body (1 b), wherein the inner cylinder body (1 a) is made of a ceramic material, the outer cylinder body (1 b) is made of a stainless steel material, and the piston shaft (2) is made of a ceramic material;
the inner wall of the front cover plate (3) is provided with a first sealing piece (5) tightly attached to the piston shaft (2), and the outer wall of the piston shaft (2) is sleeved with a second sealing piece (6) tightly attached to the inner cylinder body (1 a);
the first sealing piece (5) and the second sealing piece (6) are both tetrafluoro sealing rings;
the front cover plate (3) and the rear cover plate (4) are detachably connected with the outer cylinder body (1 b) through screws;
the inner cylinder body (1 a) and the outer cylinder body (1 b) or the front cover plate (3) or the rear cover plate (4) are detachably fixed through a positioning piece.
2. The single cylinder constant flow pump apparatus of claim 1, wherein the positioning member is a positioning pin or a positioning protrusion.
3. The single-cylinder constant flow pump device according to any one of claims 1-2, wherein the axes of the first liquid inlet (7), the second liquid inlet (9), the first liquid outlet (8) and the second liquid outlet (10) are all located in the same plane, the first liquid inlet (7) and the second liquid inlet (9) are located at one side of the central axis of the piston cylinder body (1), and the first liquid outlet (8) and the second liquid outlet (10) are located at the other side of the central axis of the piston cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321185593.4U CN220248336U (en) | 2023-05-16 | 2023-05-16 | Single-cylinder constant flow pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321185593.4U CN220248336U (en) | 2023-05-16 | 2023-05-16 | Single-cylinder constant flow pump device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220248336U true CN220248336U (en) | 2023-12-26 |
Family
ID=89271624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321185593.4U Active CN220248336U (en) | 2023-05-16 | 2023-05-16 | Single-cylinder constant flow pump device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220248336U (en) |
-
2023
- 2023-05-16 CN CN202321185593.4U patent/CN220248336U/en active Active
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