CN108279200A - A kind of bubble point test device and bubble point test system - Google Patents

Abstract

The invention discloses a bubble point testing device and a bubble point testing system, and relates to the technical field of bubble point testing. The bubble point test device includes a test chamber, a preset membrane, a liquid inlet pipe, an air inlet pipe, an output pipe and a test mechanism. The preset membrane is installed in the test chamber, and the preset membrane separates the test chamber to form the first cavity and the second cavity. Both the liquid inlet pipe and the air inlet pipe are connected with the first cavity, and the output pipe is connected with the second cavity. The testing mechanism is respectively connected with the intake pipeline and the output pipeline, and the testing mechanism is used for detecting the pressure of the air in the intake pipeline when air bubbles are generated in the output pipeline. Compared with the prior art, the bubble point testing device provided by the present invention can accurately measure the bubble point due to the adoption of the air inlet pipeline communicated with the first cavity and the testing mechanism connected with the output pipeline, and the operation is convenient. High test efficiency, not easily affected by the external environment, strong practicability, and high cost performance.

Description

A bubble point test device and a bubble point test system

technical field

The invention relates to the technical field of bubble point testing, in particular to a bubble point testing device and a bubble point testing system.

Background technique

Microporous membrane is a high-precision filter material, which is used in many fields. In order to correctly express the filtration and separation capabilities of microporous membranes, it is necessary to test the pore size of microporous membranes, especially the maximum pore size of microporous membranes. , many testing principles and methods have been elaborated, and many testing instruments have been invented at the same time. The more classic principle and method is the capillary model. Through the understanding of the capillary model, it is in line with the practical application requirements in many fields to choose the bubble point test of the microporous membrane and use it to characterize the pore size of the membrane. Each filter has a different bubble point. The bubble point is the pressure required to push air through a filter filled with liquid. When the pressure is increased and reached to overcome the tension of the test liquid in the larger pores of the filter, the liquid The gas is pressed out from the hole, and then the bubbles come out. This pressure value is the bubble point. In most cases, different filter membranes need to be selected through the bubble point.

The inventors found that the current test device for the bubble point of the filter membrane has a complex structure, low test efficiency, and is easily affected by external environmental factors. The accuracy of the measurement results is not high, and the user experience is poor.

In view of this, it is particularly important to design and manufacture a bubble point test device and a bubble point test system with accurate measurement, especially in industrial production.

Contents of the invention

The object of the present invention is to provide a bubble point testing device, which has simple structure, convenient operation, high testing efficiency, is not easily affected by the external environment, has high measurement accuracy, strong practicability, and high cost performance.

Another object of the present invention is to provide a bubble point testing system, which has simple structure, convenient operation, high testing efficiency, is not easily affected by the external environment, has high accuracy of measurement results, strong practicability, high cost performance, and good user experience.

The present invention is realized by adopting the following technical solutions.

A bubble point test device, comprising a test chamber, a preset film, a liquid inlet pipe, an air inlet pipe, an output pipe and a test mechanism, the preset film is installed in the test chamber, and the preset film separates the test chamber to form a first cavity and a The second cavity, the liquid inlet pipe and the air inlet pipe are all in communication with the first cavity, the liquid inlet pipe is used to fill the first cavity with liquid, the air inlet pipe is used to input air into the first cavity, and the output pipe is connected to the first cavity. The two cavities are in communication, and the testing mechanism is respectively connected with the intake pipe and the output pipe, and the test mechanism is used to detect the pressure of the air in the intake pipe when air bubbles are generated in the output pipe.

Further, the test mechanism includes a bubble sensor, a pressure sensor and a controller, the bubble sensor is installed on the output pipeline and connected to the controller, the bubble sensor is used to send a control signal to the controller when it detects that bubbles are generated in the output pipeline, and the control The controller is connected with the pressure sensor, the pressure sensor is installed on the intake pipe, the pressure sensor is used to detect the pressure of the air in the intake pipe, and the controller is used to read the pressure data of the pressure sensor when receiving the control signal.

Further, the testing mechanism also includes a memory, which is connected to the controller, and the memory is used for storing pressure data.

Further, the test chamber includes a box body, a box cover and a fixing piece, the box body is detachably connected to the box cover through the fixing piece, and the preset membrane is installed between the box body and the box cover.

Further, a first cavity is formed between the box body and the preset film, the side of the box body away from the preset film is respectively connected with the liquid inlet pipe and the air inlet pipe, and a second cavity is formed between the box cover and the preset film , the side of the box cover away from the preset membrane is connected with the output pipeline.

Further, the test chamber further includes a pressure plate, which is provided with a slot hole, and the pressure plate is installed in the second cavity. One side of the pressure plate is against the preset film, and the other side is against the box cover.

Further, the bubble point testing device further includes a liquid storage tank, one end of the liquid storage tank is connected to the end of the liquid inlet pipeline away from the first cavity, and the other end is connected to the output pipeline.

Further, the bubble point testing device further includes a pneumatic diaphragm pump installed on the liquid inlet pipeline, and the pneumatic diaphragm pump is used to draw the liquid in the liquid storage tank into the first cavity.

Further, the bubble point testing device also includes an emptying pipe, which is connected to the liquid storage tank, and the emptying pipe is used to discharge the air in the liquid storage tank.

A bubble point test system, including a bubble point test device and a frame, the bubble point test device is installed on the frame, the bubble point test device includes a test chamber, a preset film, a liquid inlet pipe, an air inlet pipe, an output pipe and a test Mechanism, the preset membrane is installed in the test chamber, the preset membrane separates the test chamber to form the first cavity and the second cavity, the liquid inlet pipe and the air inlet pipe are both connected with the first cavity, and the liquid inlet pipe is used to One cavity is filled with liquid, the inlet pipe is used to input air into the first cavity, the output pipe is connected with the second cavity, the testing mechanism is respectively connected with the inlet pipe and the output pipeline, and the testing mechanism is used to generate air bubbles in the output pipeline When detecting the air pressure in the intake pipe.

The bubble point test device and the bubble point test system provided by the present invention have the following beneficial effects:

In the bubble point testing device provided by the present invention, first, the liquid is input into the first cavity through the liquid inlet pipe, and the liquid passes through the preset membrane into the second cavity and the output pipeline, and the air in the test chamber and the preset membrane is discharged, and then Input air into the intake pipe, the air enters the first cavity, the liquid in the first cavity and the air generate mutual pressure, when the pressure increases continuously and reaches to overcome the tension of the test liquid in the larger hole on the preset membrane, The liquid flows out from the hole, and the continuous air bubbles generated enter the second cavity, and then reach the output pipe. At this time, the pressure of the air in the air inlet pipe is the bubble point. Compared with the prior art, the bubble point testing device provided by the present invention can accurately measure the bubble point due to the adoption of the air inlet pipeline communicated with the first cavity and the testing mechanism connected with the output pipeline, and the operation is convenient. High test efficiency, not easily affected by the external environment, strong practicability, and high cost performance.

The bubble point testing system provided by the present invention includes a bubble point testing device, which has a simple structure, can accurately measure the bubble point, is easy to operate, has high testing efficiency, is not easily affected by the external environment, has strong practicability, high cost performance, and user experience feel good.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the bubble point testing system that the embodiment of the present invention provides;

Fig. 2 is the structural representation of the bubble point test device provided by the embodiment of the present invention;

Fig. 3 is a structural block diagram of the testing mechanism in the bubble point testing device provided by the embodiment of the present invention;

Fig. 4 is a schematic structural diagram of the test chamber in the bubble point test device provided by the embodiment of the present invention.

Icons: 10-bubble point test system; 100-bubble point test device; 110-test chamber; 111-first cavity; 112-second cavity; 113-box body; 114-box cover; 115-fixture; 116-press plate; 120-preset membrane; 130-inlet pipe; 140-intake pipe; 150-output pipe; 160-test mechanism; 161-bubble sensor; 163-pressure sensor; 165-controller; ; 170-liquid storage tank; 171-into the pipeline; 173-release pipeline; 180-pneumatic diaphragm pump; 190-vent pipeline; 200-frame.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "horizontal" etc. is based on the orientation or positional relationship shown in the drawings , or the orientation or positional relationship that the product of the invention is usually placed in use is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed in a specific orientation and operation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "connecting", "installing" and "connecting" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Some embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In the case of no conflict, the features in the following embodiments can be combined with each other.

Example

Please refer to FIG. 1 , an embodiment of the present invention provides a bubble point testing system 10 for testing the bubble point of a filter membrane. The utility model has the advantages of simple structure, convenient operation, high testing efficiency, not easily affected by the external environment, high accuracy of measurement results, strong practicability, high cost performance, and good user experience. The bubble point testing system 10 includes a bubble point testing device 100 and a rack 200 . The bubble point test device 100 is installed on the frame 200, the frame 200 supports the bubble point test device 100, and can drive the bubble point test device 100 to move, which is convenient for transportation. Click to check.

Please refer to Fig. 2, the bubble point test device 100 includes a test chamber 110, a preset membrane 120, a liquid inlet pipe 130, an air inlet pipe 140, an output pipe 150, a testing mechanism 160, a liquid storage tank 170, a pneumatic diaphragm pump 180 and an emptying pipe 190. In this embodiment, the preset membrane 120 is the filter membrane to be tested. The preset membrane 120 is installed in the test chamber 110. The preset membrane 120 separates the test chamber 110 to form a first cavity 111 and a second cavity 112. The preset membrane 120 is provided with a plurality of micro-holes (not shown). A cavity 111 communicates with a second cavity 112 through micro-holes.

Both the liquid inlet pipe 130 and the air inlet pipe 140 communicate with the first cavity 111, the liquid inlet pipe 130 is used to fill the first cavity 111 with liquid, and the liquid enters the first cavity 111 from the liquid inlet pipe 130, and then immerses into the preset The membrane 120 fully wets the preset membrane 120 , and enters the second cavity 112 through the micro-holes on the preset membrane 120 , and then enters the output pipe 150 . The air intake pipe 140 is used to input air into the first cavity 111, and the air enters the first cavity 111, and exerts force on the liquid in the first cavity 111, and at the same time, the liquid produces a reaction force on the air, as the air increases , the action force and reaction force become larger at the same time, at this time, the liquid pressure in the first cavity 111 increases, and the pressure in the intake pipe 140 increases. When the reaction force continuously increases and reaches the tension of overcoming the test liquid in the larger micro-hole on the preset membrane 120, the liquid flows out from the hole to the second cavity 112, and the air also flows out from the hole, so that the second cavity 112 is formed. The air bubbles, generated, travel upwards and eventually enter output conduit 150 .

The test mechanism 160 is respectively connected with the intake pipe 140 and the output pipe 150, and the test mechanism 160 is used to detect the pressure of the air in the intake pipe 140 when continuous bubbles are generated in the output pipe 150, and this pressure is the bubble point of the preset membrane 120 . The liquid storage tank 170 is connected with the liquid inlet pipeline 130, and the liquid storage tank 170 is used for storing liquid, and the pneumatic diaphragm pump 180 is installed on the liquid inlet pipeline 130, and the pneumatic diaphragm pump 180 is used for pumping the liquid in the liquid storage tank 170 into the inlet. into the liquid pipe 130, and then into the first cavity 111. The vent pipe 190 is connected to the liquid storage tank 170 , the gas in the second cavity 112 enters the liquid storage tank 170 through the output pipe 150 , and then is discharged to the outside through the vent pipe 190 .

In this embodiment, the liquid is ethanol, which is stored in the liquid storage tank 170 and is fed into the first cavity 111 through the liquid inlet pipe 130 , but it is not limited thereto, and the type of liquid is not specifically limited.

It should be noted that one end of the liquid storage tank 170 is connected to the end of the liquid inlet pipe 130 away from the first cavity 111 , and the other end is connected to the output pipe 150 . The liquid storage tank 170, the liquid inlet pipeline 130, the test chamber 110 and the output pipeline 150 form a circulation channel, and the liquid in the liquid storage tank 170 returns to the liquid storage tank 170 through the liquid inlet pipeline 130, the test chamber 110 and the output pipeline 150 , forming a cycle. The pneumatic diaphragm pump 180 is installed on the liquid inlet pipe 130 , and the pneumatic diaphragm pump 180 is used to pump the liquid in the liquid storage tank 170 into the first cavity 111 to provide power for the circulation of the liquid. The vent pipe 190 is connected to the liquid storage tank 170, and the air in the test chamber 110 enters the output pipe 150 under the action of the liquid pressure, and then enters the liquid storage tank 170, and the air in the liquid storage tank 170 passes through the vent under the action of the liquid pressure. Conduit 190 exits.

In this embodiment, the liquid storage tank 170 is provided with an inlet pipe 171 and a discharge pipe 173 , the inlet pipe 171 is used for inputting liquid into the liquid storage tank 170 , and the discharge pipe 173 is used for releasing the liquid in the liquid storage tank 170 .

Referring to FIG. 3 , the testing mechanism 160 includes a bubble sensor 161 , a pressure sensor 163 , a controller 165 and a memory 167 . The air bubble sensor 161 is installed on the output pipe 150 and connected to the controller 165 , and the air bubble sensor 161 is used to send a control signal to the controller 165 when detecting air bubbles in the output pipe 150 . The controller 165 is connected with the pressure sensor 163, the pressure sensor 163 is installed on the intake pipe 140, the pressure sensor 163 is used to detect the pressure of the air in the intake pipe 140, and the controller 165 is used to read the pressure sensor when receiving the control signal 163 , the pressure data is the bubble point of the preset membrane 120 . The memory 167 is connected with the controller 165, and the memory 167 is used for storing pressure data, so as to record the bubble point of the preset membrane 120.

Referring to FIG. 4 , the test chamber 110 includes a box body 113 , a box cover 114 , a fixing piece 115 and a pressure plate 116 . The box body 113 is detachably connected to the box cover 114 through the fixing member 115 , and the preset film 120 is installed between the box body 113 and the box cover 114 . In this embodiment, the box cover 114 is disposed above the box body 113 , and the preset film 120 is placed horizontally. The pressing plate 116 is provided with slotted holes (not shown in the figure), and the slotted holes are used for liquid to pass through. The pressure plate 116 is installed in the second cavity 112, one side of the pressure plate 116 is against the preset film 120, and the other side is against the box cover 114, so that the preset film 120 is fixedly installed in the second cavity 112, The preset film 120 is prevented from being displaced.

In this embodiment, a first cavity 111 is formed between the box body 113 and the preset film 120, and the side of the box body 113 away from the preset film 120 is respectively connected with the liquid inlet pipe 130 and the air inlet pipe 140, and the liquid inlet pipe 130 and the intake duct 140 are all vertically arranged. A second cavity 112 is formed between the box cover 114 and the preset film 120 , and the side of the box cover 114 away from the preset film 120 is connected to the output pipe 150 , and the output pipe 150 is arranged vertically.

In the bubble point testing device 100 provided by the embodiment of the present invention, first, the liquid is input into the first cavity 111 through the liquid inlet pipe 130, and the liquid passes through the preset membrane 120 into the second cavity 112 and the output pipe 150, and the test chamber 110 and The air in the preset membrane 120 is discharged, and then the air is input into the intake pipe 140, and the air enters the first cavity 111, and the liquid and the air in the first cavity 111 generate mutual pressure. When the tension of the liquid is tested in the larger hole on the membrane 120, the liquid flows out from the hole, and the continuous air bubbles generated enter the second cavity 112 and then reach the output pipe 150. At this time, the pressure of the air in the air inlet pipe 140 is the air bubble point. Compared with the prior art, the bubble point testing device 100 provided by the present invention can accurately test the bubble point due to the adoption of the inlet pipe 140 communicated with the first cavity 111 and the testing mechanism 160 connected with the output pipe 150. Measurement, easy operation, high test efficiency, not easily affected by the external environment, strong practicability, and high cost performance make the bubble point test system 10 practical and efficient, and the user experience is good.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a kind of bubble point test device, which is characterized in that including test cabinet, default film, input duct, admission line, output Pipeline and mechanism for testing, the default film are installed in the test cabinet, and the test cabinet is separated to form by the default film One cavity and the second cavity, the input duct and the admission line are connected to first cavity, the input duct For to the first cavity liquid filling body, the admission line to be used for the first cavity input air, the efferent duct Road is connected to second cavity, and the mechanism for testing is connect with the admission line and the output channel respectively, the survey The pressure of air in the admission line is detected when test-run a machine structure in the output channel for generating bubble.

2. bubble point test device according to claim 1, which is characterized in that the mechanism for testing includes bubble sensing Device, pressure sensor and controller, the air bubble sensor are installed on the output channel, and are connect with the controller, The air bubble sensor is used to send out control signal, institute to the controller when detecting generation bubble in the output channel It states controller to connect with the pressure sensor, the pressure sensor is installed on the admission line, the pressure sensing Device is used to detect the pressure of air in the admission line, and the controller when receiving the control signal for reading institute State the pressure data of pressure sensor.

3. bubble point test device according to claim 2, which is characterized in that the mechanism for testing further includes memory, The memory is connect with the controller, and the memory is for storing the pressure data.

4. bubble point test device according to claim 1, which is characterized in that the test cabinet include box body, box cover and Fixing piece, the box body are detachably connected by the fixing piece and the box cover, the default film be installed on the box body and Between the box cover.

5. bubble point test device according to claim 4, which is characterized in that shape between the box body and the default film At first cavity, side of the box body far from the default film connects with the input duct and the admission line respectively It connects, forms second cavity, side and institute of the box cover far from the default film between the box cover and the default film State output channel connection.

6. bubble point test device according to claim 5, which is characterized in that the test cabinet further includes pressing plate, described Grooved hole is arranged in pressing plate, and the pressing plate is installed in second cavity, and the side of the pressing plate is supported with the default film, separately Side is supported with the box cover.

7. bubble point test device according to claim 1, which is characterized in that the bubble point test device further includes storage Flow container, one end of the fluid reservoir are connect with the one end of the input duct far from first cavity, the other end with it is described defeated Go out pipeline connection.

8. bubble point test device according to claim 7, which is characterized in that the bubble point test device further includes gas Dynamic diaphragm pump, the pneumatic diaphragm pump are installed in the input duct, and the pneumatic diaphragm pump is used for will be in the fluid reservoir Liquid extracting to first cavity in.

9. bubble point test device according to claim 7, which is characterized in that the bubble point test device further includes putting Vacant duct, the exhausting pipeline are connect with the fluid reservoir, the air that the exhausting pipeline is used to be discharged in the fluid reservoir.

10. a kind of bubble point tests system, which is characterized in that including bubble point test device and rack, the bubble point test Device is installed in the rack, and the bubble point test device includes test cabinet, default film, input duct, admission line, defeated Go out pipeline and mechanism for testing, the default film is installed in the test cabinet, and the test cabinet is separated to form by the default film First cavity and the second cavity, the input duct and the admission line are connected to first cavity, the inlet tube Road is used for the first cavity liquid filling body, and the admission line is used for the first cavity input air, the output Pipeline is connected to second cavity, and the mechanism for testing is connect with the admission line and the output channel respectively, described The pressure of air in the admission line is detected when mechanism for testing in the output channel for generating bubble.