CN213803791U - Microbial limit detector - Google Patents
Microbial limit detector Download PDFInfo
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- CN213803791U CN213803791U CN202022685462.5U CN202022685462U CN213803791U CN 213803791 U CN213803791 U CN 213803791U CN 202022685462 U CN202022685462 U CN 202022685462U CN 213803791 U CN213803791 U CN 213803791U
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- filter membrane
- homogenizer
- valve
- limit detector
- sleeve
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Abstract
The utility model discloses a microorganism limit detector, be provided with joint (6) of intercommunication airtight chamber (4) on organism (1) lateral wall, joint (6) department is connected with three-way pipe (7), two port departments of three-way pipe (7) are connected with valve A (8) and valve B (9) respectively, the other end and the work port of vacuum pump (10) of valve A (8) are connected, the top of every passageway (5) all welds branch pipe (11) rather than the intercommunication, ring channel (12) have been seted up on the top surface of branch pipe (11), external screw thread (14) have been seted up on the outer cylinder of bottleneck, external screw thread (14) and internal thread (13) threaded connection of homogenizer (3), under the threaded connection power, the outward flange of filter membrane (2) supports to press between the bottleneck of homogenizer (3) and the basal surface of ring channel (12). The utility model has the advantages that: compact structure, prevent that the filter membrane warp under the negative pressure, improve limit detection efficiency, conveniently take out filter membrane, easy operation.
Description
Technical Field
The utility model relates to a technical field of limit detector structure, especially a microorganism limit detector.
Background
When the microbial limit of the medicine is detected, a filter membrane filtration method is usually adopted, namely, the medicine is diluted properly, then the microbes in the liquid medicine are intercepted on the surface of the filter membrane through the filter membrane, then the filter membrane is inoculated into a culture medium prepared in advance, and finally qualitative or quantitative detection is carried out. Chinese patent publication No. CN107022477A discloses a microbial limit detector with good sealing effect, in which a fixing frame 2 is fixedly connected to the upper surface of a machine body 1, a filter 3 is fixedly connected to the top end of the fixing frame 2, a filter membrane 4 is fixedly connected to the inside of the filter 3, and a homogenizer 5 is fixedly connected to the top end of the filter 3. When in use, the cavity in the machine body 1 is vacuumized, liquid in the liquid medicine in the homogenizer 5 passes through the filter membrane 4 and enters the machine body under negative pressure, microorganisms in the liquid medicine remain on the top surface of the filter membrane 4, and finally the filter membrane 4 is taken down for subsequent qualitative or quantitative detection. However, although the microbial limit detector can complete limit detection, the following defects still exist: 1. the filter membrane 4 is fixed in the homogenizer 5, and the filter membrane 4 is difficult to take out from the homogenizer 5 subsequently, which brings difficulty to the work of operators. 2. The middle part of the filter membrane 4 is easy to dent downwards under negative pressure, and finally meshes at the middle part of the filter membrane 4 are mutually extruded, and the aperture is reduced after the meshes are extruded, so that the filtering efficiency of the filter membrane 4 is reduced, and the limit detection efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a compact structure, prevent that the filter membrane warp under the negative pressure, improve limit detection efficiency, conveniently take out filter membrane, easy operation's microorganism limit detector.
The purpose of the utility model is realized through the following technical scheme: a microbial limit detector comprises a machine body, a filter membrane, a homogenizer and a closed cavity arranged in the machine body, the top surface of the machine body is provided with a plurality of channels communicated with the closed cavity, the side wall of the machine body is provided with a joint communicated with the closed cavity, the joint is connected with a three-way pipe, two port parts of the three-way pipe are respectively connected with a valve A and a valve B, the other end of the valve A is connected with a working port of a vacuum pump, the top of each channel is welded with a branch pipe communicated with the channel, the top surface of each branch pipe is provided with an annular groove, the inner wall of each annular groove is provided with an internal thread, and the bottom surface of each annular groove is provided with a filter membrane, the top of the homogenizer is provided with an opening, the bottom of the homogenizer is provided with a bottle mouth, the outer cylindrical surface of the bottle mouth is provided with an external thread, the external thread of the homogenizer is in threaded connection with the internal thread, under the screw connection force, the outer edge of the filter membrane is pressed between the bottle mouth of the homogenizer and the bottom surface of the annular groove; all the welding has the baffle in every spinal branch pipe, and the top welding of baffle has the sleeve, is provided with upright spring in the sleeve, and the one end of founding the spring welds on the baffle, and the other end extends in the sleeve outside, and the extension of founding the spring is served and is welded the fly leaf, and the top welding of fly leaf has spherical shell, and the top surface of spherical shell supports to press on the basal surface of filter membrane under the spring action of founding the spring, has seted up a plurality of weeping holes on the baffle.
The other end of the valve B is connected with a liquid discharge pipe, and a recovery tank supported on the ground is arranged below the liquid discharge pipe.
The machine body and the vacuum pump are both supported on the ground.
The liquid leakage holes are uniformly distributed on the partition plate by taking the sleeve as the center.
The sleeve is vertically arranged and arranged on the partition plate.
The other lateral wall of organism has been seted up the inspection hole, inspection hole and airtight chamber intercommunication, the outside of inspection hole has set firmly the manometer, and the detection head of manometer runs through the inspection hole and stretches into in airtight intracavity.
The utility model has the advantages of it is following: the utility model discloses compact structure, prevent that the filter membrane warp under the negative pressure, improve limit detection efficiency, conveniently take out filter membrane, easy operation.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
FIG. 3 is a schematic structural diagram of a homogenizer;
FIG. 4 is a schematic structural view of a branch pipe;
in the figure, 1-machine body, 2-filter membrane, 3-homogenizer, 4-sealed cavity, 5-channel, 6-joint, 7-three-way pipe, 8-valve A, 9-valve B, 10-vacuum pump, 11-branch pipe, 12-annular groove, 13-internal thread, 14-external thread, 15-partition plate, 16-sleeve, 17-vertical spring, 18-movable plate, 19-spherical shell, 20-leakage hole, 21-liquid discharge pipe, 22-recovery groove, 23-detection hole and 24-pressure gauge.
Detailed Description
The invention will be further described with reference to the accompanying drawings, without limiting the scope of the invention to the following:
as shown in fig. 1 to 4, a microbial limit detector comprises a machine body 1, a filter membrane 2, a homogenizer 3, and a closed cavity 4 arranged in the machine body 1, wherein the top surface of the machine body 1 is provided with a plurality of channels 5 communicated with the closed cavity 4, the side wall of the machine body 1 is provided with a joint 6 communicated with the closed cavity 4, the joint 6 is connected with a three-way pipe 7, two port parts of the three-way pipe 7 are respectively connected with a valve A8 and a valve B9, the other end of the valve A8 is connected with a working port of a vacuum pump 10, the top of each channel 5 is welded with a branch pipe 11 communicated with the channel, the top surface of the branch pipe 11 is provided with an annular groove 12, the inner wall of the annular groove 12 is provided with an internal thread 13, the filter membrane 2 is placed on the bottom surface of the annular groove 12, the top of the homogenizer 3 is provided with an opening, the bottom of the homogenizer 3 is provided with a bottle mouth, the outer cylindrical surface of the bottle mouth is provided with an external thread 14, the external thread 14 of the homogenizer 3 is in threaded connection with the internal thread 13, and under the threaded connection force, the outer edge of the filter membrane 2 is pressed between the bottle mouth of the homogenizer 3 and the bottom surface of the annular groove 12; all welded in every branch pipe 11 has baffle 15, the top welding of baffle 15 has sleeve 16, the vertical setting of sleeve 16 just sets up on baffle 15, be provided with upright spring 17 in the sleeve 16, the one end of founding spring 17 welds on baffle 15, the other end extends in sleeve 16 outside, the welding has fly leaf 18 on the extension end of founding spring 17, the top welding of fly leaf 18 has spherical shell 19, the top surface of spherical shell 19 supports under the spring action of founding spring 17 and presses on the basal surface of filter membrane 2, a plurality of weeping holes 20 have been seted up on the baffle 15, weeping hole 20 uses sleeve 16 to be center evenly distributed on baffle 15.
The other end of the valve B9 is connected with a drain pipe 21, and a recovery tank 22 supported on the ground is arranged below the drain pipe 21. The machine body 1 and the vacuum pump 10 are both supported on the ground. A detection hole 23 is formed in the other side wall of the machine body 1, the detection hole 23 is communicated with the sealed cavity 4, a pressure gauge 24 is fixedly arranged on the outer side of the detection hole 23, and a detection head of the pressure gauge 24 penetrates through the detection hole and extends into the sealed cavity 4.
The working process of the utility model is as follows:
an operator places the detector in an aseptic workshop, a certain amount of liquid medicine is added into a cavity of the homogenizer 3 through an opening at the top of the homogenizer 3, then a valve A8 and a vacuum pump 10 are opened, the vacuum pump 10 vacuumizes an inner cavity of a joint 6, an inner cavity of a three-way pipe 7, a sealed cavity 4 and a channel 5, the operator reads a pressure value in the sealed cavity 4 from a pressure gauge 24, when the pressure value is pumped to a certain pressure, the operator closes a valve A8 and opens a valve B9, at the moment, the liquid medicine in the homogenizer 3 sequentially passes through a filter membrane 2, a branch pipe 11, a liquid leakage hole 20, a channel 5, the sealed cavity 4, the joint 6, the three-way pipe 7, a valve B9 and a liquid discharge pipe 21 under negative pressure and enters a recovery tank 22 to be collected, and microorganisms in the liquid medicine are remained on the top surface of the filter membrane 2. Wherein, the filter membrane 2 is under the negative pressure, and when its middle region had the trend of undercut, spherical shell 19 jack-up the filter membrane 2 that warp under the elasticity effect of upright spring 17 to make filter membrane 2 resume straight state, thereby prevent effectively that the filter membrane from warping under the negative pressure, and then very big improvement microbial limit's detection efficiency.
When the liquid medicine in the homogenizer 3 is completely discharged, the homogenizer 3 is screwed upwards, and the filter membrane 2 is exposed outside, so that an operator can conveniently clamp the filter membrane 2 out from the bottom of the annular groove 12 by using tweezers, and qualitative or quantitative detection is carried out on microorganisms on the filter membrane 2 after the filter membrane is clamped out. Therefore, compare the structure that traditional filter membrane was fixed in the homogenizer, very big has made things convenient for operating personnel to take out the filter membrane.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. The utility model provides a microorganism limit detector, it includes organism (1), filter membrane (2), homogenizer (3), sets up airtight chamber (4) in organism (1), passageway (5) of a plurality of intercommunication airtight chambers (4) are seted up on the top surface of organism (1), its characterized in that: the machine body (1) is provided with a joint (6) communicated with the sealed cavity (4) on the side wall, the joint (6) is connected with a three-way pipe (7), two port parts of the three-way pipe (7) are respectively connected with a valve A (8) and a valve B (9), the other end of the valve A (8) is connected with a working port of a vacuum pump (10), a branch pipe (11) communicated with the top part of each channel (5) is welded at the top part of each channel, the top surface of each branch pipe (11) is provided with an annular groove (12), the inner wall of each annular groove (12) is provided with an internal thread (13), a filter membrane (2) is placed on the bottom surface of each annular groove (12), the top part of the homogenizer (3) is provided with an opening, the bottom part of the homogenizer (3) is provided with a bottle opening, the external thread (14) is arranged on the outer cylindrical surface of the bottle opening, and the external thread (14) and the internal thread (13) are connected with the internal thread (13), under the screw connection force, the outer edge of the filter membrane (2) is pressed between the bottle mouth of the homogenizer (3) and the bottom surface of the annular groove (12); all welded baffle (15) in every branch pipe (11), the top welding of baffle (15) has sleeve (16), be provided with in sleeve (16) and found spring (17), the one end of founding spring (17) welds on baffle (15), the other end extends in sleeve (16) outside, the extension of founding spring (17) is served and is welded movable plate (18), the top welding of movable plate (18) has spherical shell (19), the top surface of spherical shell (19) supports under the spring action of founding spring (17) and presses on the basal surface of filter membrane (2), a plurality of weeping holes (20) have been seted up on baffle (15).
2. A microbial limit detector according to claim 1, wherein: the other end of the valve B (9) is connected with a liquid discharge pipe (21), and a recovery tank (22) supported on the ground is arranged below the liquid discharge pipe (21).
3. A microbial limit detector according to claim 1, wherein: the machine body (1) and the vacuum pump (10) are both supported on the ground.
4. A microbial limit detector according to claim 1, wherein: the liquid leakage holes (20) are uniformly distributed on the partition plate (15) by taking the sleeve (16) as a center.
5. A microbial limit detector according to claim 1, wherein: the sleeve (16) is vertically arranged and arranged on the partition board (15).
6. A microbial limit detector according to claim 1, wherein: the utility model discloses a detection method, including organism (1), detection hole (23) have been seted up on another lateral wall of organism (1), detection hole (23) and airtight chamber (4) intercommunication, the outside of detection hole (23) has set firmly manometer (24), and the detection head of manometer (24) runs through the detection hole and stretches into in airtight chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022685462.5U CN213803791U (en) | 2020-11-19 | 2020-11-19 | Microbial limit detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022685462.5U CN213803791U (en) | 2020-11-19 | 2020-11-19 | Microbial limit detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213803791U true CN213803791U (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022685462.5U Active CN213803791U (en) | 2020-11-19 | 2020-11-19 | Microbial limit detector |
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| CN (1) | CN213803791U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118562591A (en) * | 2024-08-05 | 2024-08-30 | 杭州西月生物科技有限公司 | Industrial-grade integrated alga hydrogen production photo-bioreactor |
-
2020
- 2020-11-19 CN CN202022685462.5U patent/CN213803791U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118562591A (en) * | 2024-08-05 | 2024-08-30 | 杭州西月生物科技有限公司 | Industrial-grade integrated alga hydrogen production photo-bioreactor |
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