CN219323926U - Needle cylinder type vacuum suction filtration device - Google Patents
Needle cylinder type vacuum suction filtration device Download PDFInfo
- Publication number
- CN219323926U CN219323926U CN202320265675.3U CN202320265675U CN219323926U CN 219323926 U CN219323926 U CN 219323926U CN 202320265675 U CN202320265675 U CN 202320265675U CN 219323926 U CN219323926 U CN 219323926U
- Authority
- CN
- China
- Prior art keywords
- liquid storage
- exhaust
- filtration device
- type vacuum
- suction filtration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model provides a needle cylinder type vacuum suction filtration device, and belongs to the technical field of chemical experimental equipment. The cylinder type vacuum suction filtration device comprises: the liquid storage cylinder is of a cylindrical structure with two open ends, and a filter device is arranged in the liquid storage cylinder; the liquid receiving bottle is positioned below the liquid storage barrel, and an opening of the liquid receiving bottle is connected with the lower end of the liquid storage barrel in a split mode; the drawing exhaust rod is arranged in the liquid storage barrel in a drawing way, one end of the drawing exhaust rod extends out of the upper end of the liquid storage barrel, an exhaust channel is formed in the drawing exhaust rod, and a sealing mechanism is arranged in the exhaust channel. The device can avoid the problems that the collection and the measurement of the sample are affected due to the fact that a large amount of foam is generated in the suction filtration process; and secondly, the design of the drawing exhaust rod utilizes the atmospheric pressure difference, so that the reduction of the filtration efficiency and the power loss caused by the reduction of the atmospheric pressure difference in the filtration process when the liquid storage cylinder is simply sealed are avoided, and the operation is simple and easy.
Description
Technical Field
The utility model relates to the technical field of chemical experimental equipment, in particular to a needle cylinder type vacuum suction filtration device.
Background
The suction filtration is also called vacuum filtration, which means that the suction pump is used for reducing the pressure in the suction filtration bottle, and the liquid is pushed to be filtered by the force of atmospheric pressure, so that the purpose of solid-liquid separation is achieved. During the test, it is often necessary to filter the liquid with a 0.45 μm or 0.22 μm filter membrane to avoid plugging damage to the instrument when the subsequent liquid enters the precision instrument for analysis. Because natural filtration is too time consuming or manual filtration is time consuming and laborious, liquids often require solid-liquid separation using suction filtration devices.
The current suction filtration device is characterized in that liquid is contacted with air in the suction filtration process, so that a great amount of foam is generated when some liquid difficult to filter passes through a filter membrane with smaller pore diameter, the collection of the filtered liquid is influenced, and especially, under the condition of smaller sample amount, even the filtered liquid is changed into foam completely, and the measurement of the sample is influenced.
Disclosure of Invention
The utility model provides a needle cylinder type vacuum suction filtration device which is used for solving the problem that in the prior art, liquid and air are contacted in the suction filtration process of the suction filtration device, so that a great amount of foam is generated when some liquid difficult to filter passes through a filter membrane with smaller pore diameter.
The utility model provides a needle cylinder type vacuum suction filtration device, which comprises:
the liquid storage cylinder is of a cylindrical structure with two open ends, and a filter device is arranged in the liquid storage cylinder;
the liquid receiving bottle is positioned below the liquid storage barrel, and an opening of the liquid receiving bottle is connected with the lower end of the liquid storage barrel in a split mode;
the drawing exhaust rod is arranged in the liquid storage barrel in a drawing way, one end of the drawing exhaust rod extends out of the upper end of the liquid storage barrel, an exhaust channel is formed in the drawing exhaust rod, and a sealing mechanism is arranged in the exhaust channel.
According to the syringe type vacuum suction filtration device provided by the utility model, the lower end of the liquid storage cylinder is provided with the clamping part, the clamping part is of an inverted cone-shaped shell structure, the opening of the liquid receiving bottle is provided with the mounting part, the mounting part is of a horn structure matched with the inverted cone-shaped shell structure, the clamping part is clamped in the mounting part, and the clamping part is communicated with the mounting part.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the outer peripheral wall of the clamping part is provided with the frosted structure, and the inner peripheral wall of the mounting part is also provided with the frosted structure.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the filtration device is a porous glass plate or a sand core, and the porous glass plate or the sand core is fixed in the liquid storage cylinder.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the outer wall of the liquid storage cylinder is provided with the vacuum pump pipe interface, the vacuum pump pipe interface is communicated with the inside of the liquid storage cylinder, and the vacuum pump pipe interface is positioned below the filtration device.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the flow guide pipe is arranged below the filtration device, the upper end of the flow guide pipe is communicated with the interior of the liquid storage cylinder, and the lower end of the flow guide pipe extends into the liquid receiving bottle.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the suction and exhaust rod comprises the rod body, the outer part of the lower end of the rod body is sleeved with the sealing ring, the sealing ring is adhered to the inner wall of the liquid storage cylinder, the exhaust channel is formed in the rod body, and the upper end of the exhaust channel is connected with the sealing cover in a split mode.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the sealing mechanism comprises the sealing part and the movable ball, the sealing part is fixed at the lower end of the exhaust channel, the sealing part is provided with the exhaust through hole, the diameter of the exhaust through hole is smaller than that of the movable ball, the movable ball is movably arranged in the exhaust channel, and the diameter of the movable ball is smaller than that of the exhaust channel.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, one side of the exhaust through hole, which faces the movable ball, is provided with the chamfer structure matched with the movable ball, and the chamfer structure is connected with the sealing part.
According to the needle cylinder type vacuum suction filtration device provided by the utility model, the chamfer structure of the sealing part is made of rubber.
According to the needle cylinder type vacuum suction filtration device, the rod body of the suction and exhaust rod is of a hollow structure, and the sealing mechanism is arranged in the rod body, so that the suction and exhaust rod can exhaust gas and seal the device, and liquid is isolated from contact with air in the suction filtration process; the device can avoid the problems that the collection and the measurement of the sample are affected due to the fact that a large amount of foam is generated in the suction filtration process; and secondly, the design of the drawing exhaust rod utilizes the atmospheric pressure difference, so that the reduction of the filtration efficiency and the power loss caused by the reduction of the atmospheric pressure difference in the filtration process when the liquid storage cylinder is simply sealed are avoided, and the operation is simple and easy.
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 syringe type vacuum filtration device provided by the utility model;
FIG. 2 is a schematic view of the internal structure of the cartridge;
FIG. 3 is a schematic view of the structure of the liquid receiving bottle;
fig. 4 is a schematic view of the internal structure of the drawing exhaust rod.
Reference numerals:
100. a liquid storage cylinder; 101. an engagement portion; 102. a vacuum pump pipe interface; 103. a flow guiding pipe;
200. a liquid receiving bottle; 201. a mounting part;
300. drawing an exhaust rod; 301. an exhaust passage; 302. a seal ring; 303. sealing cover;
400. a filtering device;
500. a sealing mechanism; 501. a sealing part; 502. a movable ball; 503. and an exhaust through hole.
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.
A syringe type vacuum pumping apparatus of the present utility model will be described with reference to fig. 1 to 4, comprising: a liquid storage barrel 100, a liquid receiving bottle 200 and a drawing exhaust rod 300.
The liquid storage barrel 100 is of a cylindrical structure with two open ends, and a filter device 400 is arranged inside the liquid storage barrel 100;
specifically, the filtering device 400 is a porous glass plate or a sand core, and the porous glass plate or the sand core is fixed in the liquid storage barrel 100.
The outer wall of the liquid storage barrel 100 is provided with a vacuum pump pipe interface 102, the vacuum pump pipe interface 102 is communicated with the inside of the liquid storage barrel 100, and the vacuum pump pipe interface 102 is positioned below the filtering device 400.
A flow guide pipe 103 is arranged below the filtering device 400, the upper end of the flow guide pipe 103 is communicated with the inside of the liquid storage barrel 100, and the lower end of the flow guide pipe 103 extends into the liquid receiving bottle 200. That is, the upper end of the flow guide 103 extends outward and is connected to the inner wall of the liquid storage tube 100, so that the liquid passing through the filtering device 400 flows into the flow guide 103.
The liquid receiving bottle 200 is positioned below the liquid storage barrel 100, and an opening of the liquid receiving bottle 200 is connected with the lower end of the liquid storage barrel 100 in a split manner;
specifically, the lower end of the liquid storage barrel 100 is provided with a clamping part 101, the clamping part 101 is of an inverted cone-shaped shell structure, an opening of the liquid receiving bottle 200 is provided with a mounting part 201, the mounting part 201 is of a horn structure adapted to the inverted cone-shaped shell structure, the clamping part 101 is clamped in the mounting part 201, and the clamping part 101 is communicated with the mounting part 201. The outer peripheral wall of the engaging portion 101 is provided with a frosted structure, and the inner peripheral wall of the mounting portion 201 is also provided with a frosted structure, so that the sealing effect can be further improved by the frosted structure. When the clamping part 101 is inserted into the mounting part 201, the connection between the liquid storage barrel 100 and the liquid receiving bottle 200 can be realized, and when the clamping part 101 is pulled out from the mounting part 201, the separation between the liquid storage barrel 100 and the liquid receiving bottle 200 can be realized; the liquid storage barrel 100 and the liquid receiving bottle 200 can be connected in a split mode in a plugging mode, and convenience and rapidness are achieved.
The drawing exhaust rod 300 is arranged in the liquid storage barrel 100 in a drawing way, one end of the drawing exhaust rod 300 extends out of the upper end of the liquid storage barrel 100, an exhaust channel 301 is arranged in the drawing exhaust rod 300, and a sealing mechanism 500 is arranged in the exhaust channel 301.
The drawing exhaust rod 300 comprises a rod body, a sealing ring 302 is sleeved outside the lower end of the rod body, the sealing ring 302 is adhered to the inner wall of the liquid storage barrel 100, an exhaust channel 301 is arranged inside the rod body, and the upper end of the exhaust channel 301 is connected with a sealing cover 303 in a split mode.
The sealing mechanism 500 comprises a sealing part 501 and a movable ball 502, wherein the sealing part 501 is fixed at the lower end of the exhaust channel 301, an exhaust through hole 503 is formed in the sealing part 501, the diameter of the exhaust through hole 503 is smaller than that of the movable ball 502, the movable ball 502 is movably arranged in the exhaust channel 301, and the diameter of the movable ball 502 is smaller than that of the exhaust channel 301.
The exhaust through hole 503 is provided with the chamfer structure of adaptation with movable ball 502 towards the one side of movable ball 502, and chamfer structure is connected with sealing part 501, and the chamfer structure of sealing part 501 is the rubber material. The chamfer structure can be better with movable ball 502 adaptation so that movable ball 502 seals exhaust through-hole 503, and the chamfer structure is soft rubber material, and under the negative pressure state, the chamfer structure of movable ball 502 extrusion sealing portion 501 has further improved sealed effect.
The working flow of the utility model is as follows:
when the liquid storage tube is used, the drawing exhaust rod 300 is pulled out from the liquid storage tube 100, filter paper is placed on the filtering device 400, liquid to be subjected to suction filtration is poured into the liquid storage tube 100, the sealing cover 303 at the upper end of the exhaust channel 301 is opened, the drawing exhaust rod 300 is plugged into the liquid storage tube 100, the drawing exhaust rod 300 is pressed down until the lower end of the drawing exhaust rod 300 is about to be contacted with the liquid level, most of air in the liquid storage tube 100 is discharged, then the sealing cover 303 is covered, the vacuum pump is connected with an external vacuum pump at the vacuum pump tube interface 102, the vacuum pump is started for pumping, negative pressure is generated in the liquid receiving bottle 200, the liquid enters the liquid receiving bottle 200 along the guide tube 103 after being filtered by the filtering device 400, and when the negative pressure is generated, the movable ball 502 is subjected to downward negative pressure suction to seal the exhaust through hole 503, so that the whole suction filtration process is in a sealing state. After the liquid suction filtration is completed, the vacuum pump is closed, and the liquid receiving bottle 200 is separated from the liquid storage cylinder 100, so that the liquid after the suction filtration can be obtained.
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.
Claims (8)
1. A syringe type vacuum filtration device, comprising:
the liquid storage cylinder is of a cylindrical structure with two open ends, and a filter device is arranged in the liquid storage cylinder;
the liquid receiving bottle is positioned below the liquid storage barrel, and an opening of the liquid receiving bottle is connected with the lower end of the liquid storage barrel in a split mode;
the drawing exhaust rod is arranged in the liquid storage barrel in a drawing way, one end of the drawing exhaust rod extends out of the upper end of the liquid storage barrel, an exhaust channel is formed in the drawing exhaust rod, and a sealing mechanism is arranged in the exhaust channel;
the drawing exhaust rod comprises a rod body, a sealing ring is sleeved outside the lower end of the rod body, the sealing ring is adhered to the inner wall of the liquid storage barrel, the exhaust channel is formed in the rod body, and the upper end of the exhaust channel is connected with a sealing cover in a split mode;
the sealing mechanism comprises a sealing part and a movable ball, wherein the sealing part is fixed at the lower end of the exhaust channel, an exhaust through hole is formed in the sealing part, the diameter of the exhaust through hole is smaller than that of the movable ball, the movable ball is movably arranged in the exhaust channel, and the diameter of the movable ball is smaller than that of the exhaust channel.
2. The syringe type vacuum suction filtration device according to claim 1, wherein a clamping portion is arranged at the lower end of the liquid storage cylinder, the clamping portion is of an inverted cone-shaped shell structure, an installation portion is arranged at an opening of the liquid receiving bottle, the installation portion is of a horn structure matched with the inverted cone-shaped shell structure, the clamping portion is clamped in the installation portion, and the clamping portion is communicated with the installation portion.
3. The syringe type vacuum suction filter device according to claim 2, wherein a frosted structure is provided on an outer peripheral wall of the engaging portion, and a frosted structure is also provided on an inner peripheral wall of the mounting portion.
4. The syringe type vacuum suction filtration device according to claim 1, wherein the filtration device is a porous glass plate or a sand core, and the porous glass plate or the sand core is fixed in the liquid storage cylinder.
5. The syringe type vacuum suction filtration device according to claim 1, wherein a vacuum pump pipe interface is arranged on the outer wall of the liquid storage cylinder, the vacuum pump pipe interface is communicated with the inside of the liquid storage cylinder, and the vacuum pump pipe interface is positioned below the filtration device.
6. The syringe type vacuum filtration device according to claim 1, wherein a flow guide pipe is arranged below the filtration device, the upper end of the flow guide pipe is communicated with the interior of the liquid storage cylinder, and the lower end of the flow guide pipe extends into the liquid receiving bottle.
7. The cylinder type vacuum suction filtration device according to claim 1, wherein a chamfer structure adapted to the movable ball is provided on a side of the exhaust through hole facing the movable ball, and the chamfer structure is connected with the sealing portion.
8. The syringe vacuum pumping apparatus of claim 7, wherein the chamfer structure of the seal portion is a rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320265675.3U CN219323926U (en) | 2023-02-07 | 2023-02-07 | Needle cylinder type vacuum suction filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320265675.3U CN219323926U (en) | 2023-02-07 | 2023-02-07 | Needle cylinder type vacuum suction filtration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219323926U true CN219323926U (en) | 2023-07-11 |
Family
ID=87064940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320265675.3U Active CN219323926U (en) | 2023-02-07 | 2023-02-07 | Needle cylinder type vacuum suction filtration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219323926U (en) |
-
2023
- 2023-02-07 CN CN202320265675.3U patent/CN219323926U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219323926U (en) | Needle cylinder type vacuum suction filtration device | |
| CN212159203U (en) | Sampling device for liquid repeatable sterilization | |
| CN105651554A (en) | Collection device and collection method of concrete pore solution | |
| CN210834362U (en) | Gas sampler | |
| CN110146574B (en) | Underground water field filtration sampling and dynamic water flow index measuring device and method | |
| CN212748414U (en) | Surface water sample subsides and siphon collection system | |
| CN109621512A (en) | It is a kind of can automatic sampling improvement Suction filtration device and filter method | |
| CN211740790U (en) | Air collection system for environmental detection | |
| CN204891342U (en) | Filter equipment is used in laboratory | |
| CN211927394U (en) | Syringe for insulating oil analysis | |
| CN210071441U (en) | Sampling device for monitoring environmental air quality | |
| CN209927528U (en) | Environment-friendly industrial wastewater mobile sampling device | |
| CN220568463U (en) | Detection sampler | |
| CN114739738A (en) | Sampling device and sampling method | |
| CN211069213U (en) | Filter equipment for chemical analysis experiments | |
| CN111207957A (en) | Method for collecting liquid in negative pressure device into closed bottle | |
| CN214972601U (en) | Filter device for measuring metal elements in fixed pollution source waste gas | |
| CN114459871B (en) | Sealed sample collecting and filtering device | |
| CN209542164U (en) | A kind of city rain sewage network deep water water quality sampling device | |
| CN214844195U (en) | Sewage sampler for environmental monitoring | |
| CN213433223U (en) | Improved suction filtration device | |
| CN219596665U (en) | Leak-proof dropper for detection | |
| CN220455291U (en) | Sewage detection device | |
| CN217449154U (en) | Suction filtration device for antibody test | |
| CN217717098U (en) | Food detection is with portable sample device of preserving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |