Microbial limit detector for food detection

Abstract

The invention relates to the technical field of microbial limit detection, and discloses a microbial limit detector for food detection, comprising: a body liquid storage tank for storing a solution to be detected; the drainage tube is used for draining the detected solution; a processing device; the treatment device comprises a matching assembly, a quantifying assembly, a disinfecting assembly and a membrane loading assembly; the matching assembly rotates to drive the quantifying assembly to quantitatively take the detection solution in the liquid storage box; the disinfection assembly is used for disinfecting the matching assembly; and the membrane mounting assembly is used for automatically controlling the mounting of the filter membrane. According to the microbial limit detector for food detection, automatic and quantitative taking and placing of a detection solution can be achieved through the arranged quantitative assembly, and compared with continuous metering and feeding of an operator in the prior art, automatic and quantitative feeding can be achieved through the quantitative assembly, so that the operator can conveniently and rapidly detect the detection solution, and the detection efficiency is improved. And the detection data accuracy is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of microbial limit detection, in particular to a microbial limit detector for food detection. Background Art

[0002] The microbial limit detector is made of stainless steel and is equipped with a built-in imported diaphragm liquid pump. It does not require an external suction bottle. The liquid is directly discharged through the diaphragm liquid pump, which reduces the cumbersomeness of using the suction bottle and avoids the shortcomings of slow filtration speed caused by poor connection.

[0003] A common biological limit detector consists of a detector body and a filter head. The filter head is fixed on the top of the detector body. The staff first places the filter membrane on the top of the filter head, then installs the filter cup on the filter head, and pours the sample solution into the filter cup. Then, the diaphragm liquid pump inside the detector body is turned on for negative pressure filtration, thereby retaining the microorganisms on the filter membrane, which is convenient for subsequent cultivation and counting of the microorganisms.

[0004] However, in the current testing process, there is a lot of preliminary preparation work, such as the need to disinfect the filter head and disassemble the filter membrane and manually install it on the filter head. After all the installation processes are completed, the test liquid needs to be poured into the filter cup, and the test liquid needs to be quantitatively added during the testing process, because if the capacity of the test liquid is different, the accuracy of the data will be reduced. Generally, when testing, multiple filter cups are tested simultaneously. If the test capacity is different, the later data error will be large. At present, many still rely on measuring cups for measurement, which requires multiple measurements, resulting in reduced detection efficiency and the test personnel's operating steps will be too cumbersome. Therefore, a microbial limit tester for food testing is proposed to solve the above-mentioned problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides a microbial limit detector for food testing, which solves the problems in the prior art of microbial limit testing, such as unchanged operation, the need for multiple measurements, and the need for equipment processing in multiple processes in the early stage, which leads to inconvenience in testing and reduced testing efficiency.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a microbial limit detector for food testing, comprising a body liquid storage box for storing the solution to be tested; a drainage tube for draining the solution after testing; a processing device; the processing device comprises a matching component, a quantitative component, a disinfection component and a membrane installation component; the matching component rotates to drive the quantitative component to quantitatively take the test solution from the liquid storage box; the disinfection component is used to disinfect the matching component; the membrane installation component is used to automatically control the installation of the filter membrane.

[0009] Preferably, the liquid storage box is mounted on the machine body via a connector, one side of the machine body is mounted with a drainage tube, and a diaphragm liquid pump is installed inside the machine body.

[0010] Preferably, the mating component includes a ring body, the center of the ring body is fixedly connected to a central axis, two guide sleeves are installed on the central axis through a connecting piece, a filter head is installed on the guide sleeve, and a magnetic ring is provided on the body, and the magnetic ring is magnetically connected to the guide sleeve.

[0011] Preferably, the quantitative component includes a capacity box, the capacity box is connected to a baffle plate, the baffle plate is slidably connected to the bottom of the liquid storage box, the bottom of the capacity box is slidably connected to a closing plate, the closing plate is fixed to a connecting piece on the machine body, a disk body is fixedly connected to the central axis, rollers are rotatably connected to both sides of the disk body, and an abutment plate is connected to the bottom of the baffle plate, and the abutment plate abuts against the roller.

[0012] Preferably, a first hole is provided at the bottom of the liquid storage box, a drainage hole is provided on the closing plate, a guide rod is slidably connected to the connecting piece, a return spring is sleeved on the surface of the guide rod, a pull plate is connected to one end of the guide rod, and the pull plate is fixed to the bottom of the blocking plate.

[0013] Preferably, the disinfection assembly includes a fixed shaft, the fixed shaft is fixed on the liquid storage box, a volume sleeve is installed on the fixed shaft, an alcohol solution is placed in the volume sleeve, an extrusion plate is slidably connected to the volume sleeve, a baffle is installed at the bottom of the extrusion plate, and a drip hole is opened at the bottom of the volume sleeve.

[0014] Preferably, a support rod is slidably connected inside the fixed shaft, one end of the support rod is connected to the extrusion plate, a compression spring is sleeved on the surface of the support rod, an igniter is installed on the volume sleeve, and a push rod is installed on the central shaft.

[0015] Preferably, the membrane loading assembly includes a storage box, which is installed on a liquid storage box, with multiple filter frames installed in the storage box, and a membrane body installed in the filter frame. A push groove is opened at the bottom of the storage box, a push frame is slidably connected to the push groove, and a connecting rod is slidably connected to the push frame, one end of the connecting rod is installed on the storage box, and a support spring is sleeved on the surface of the connecting rod, and the support spring is located between the push frame and the storage box.

[0016] Preferably, a filter cup is clamped on the filter head, and the filter cup is located below the drainage hole.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a microbial limit detector for food testing, which has the following beneficial effects:

[0019] 1. The microbial limit tester for food testing can realize automatic quantitative taking and placing of the test solution through the quantitative component. Compared with the prior art which requires the operator to continuously measure and input the solution, the quantitative component can automatically input the solution, thereby facilitating the operator to conduct rapid testing while ensuring the accuracy of the test data.

[0020] 2. The microbial limit tester for food testing can realize automatic ignition disinfection of the filter head 403 and automatic installation of the filter membrane through the provided disinfection component and membrane installation component, which directly simplifies the operation procedures required by the operator in the early stage, making the testing personnel faster and more convenient during the testing.

[0021] 3. The microbial limit tester for food testing can facilitate the rapid disassembly of the filter head 403 by the testing personnel through the rotatable matching components, and converts the traditional fixed installation into a rotating magnetic fixation, which can further improve the overall quickness of the matching installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of a microbial limit tester for food testing proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the matching components of a microbial limit tester for food testing proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the installation structure of a filter cup of a microbial limit tester for food testing proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of a processing device of a microbial limit detector for food testing proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of a disinfection component of a microbial limit detector for food testing proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of a membrane assembly of a microbial limit tester for food testing proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of a storage box of a microbial limit tester for food testing proposed by the present invention.

[0029] In the figure: 1. body; 2. liquid storage box; 3. drainage tube; 4. processing device; 401. ring body; 402. central axis; 403. filter head; 404. guide sleeve; 405. disc body; 406. roller; 407. first hole; 408. capacity box; 409. baffle plate; 410. closing plate; 411. pull plate; 412. guide rod; 413. reset spring; 414. drainage hole; 415. fixed axis; 416. capacity sleeve; 417. extrusion plate; 418. igniter; 419. support rod; 420. compression spring; 421. baffle; 422. push rod; 423. storage box; 424. push groove; 425. filter frame; 426. membrane body; 427. push frame; 428. connecting rod; 429. support spring; 5. filter cup. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 7 A microbial limit tester for food testing includes a body 1, a liquid storage box 2 for storing a solution to be tested; a drainage tube 3 for draining the tested solution; the liquid storage box 2 is installed on the body 1 through a connecting piece, one side of the body 1 is installed with the drainage tube 3, a diaphragm liquid pump is installed inside the body 1, a filter cup 5 is clamped on the filter head 403, and the filter cup 5 is located below the drainage hole 414.

[0032] In this embodiment, the processing device 4 includes a matching component, a quantitative component, a disinfection component and a film installation component;

[0033] The matching component includes a ring body 401, the center of the ring body 401 is fixedly connected to a central shaft 402, two guide sleeves 404 are installed on the central shaft 402 through a connector, a filter head 403 is installed on the guide sleeve 404, and a magnetic ring is provided on the body 1, and the magnetic ring is magnetically connected to the guide sleeve 404. When the operator can rotate the ring body 401, the rotation of the central shaft 402 is driven, and the central shaft 402 will drive the filter head 403 on the guide sleeve 404 to rotate. The rotatable matching component can facilitate the rapid disassembly of the filter head 403 by the inspection personnel, and the traditional fixed installation is converted into a rotating magnetic fixation, which can further improve the overall matching installation convenience.

[0034] Furthermore, the quantitative component includes a capacity box 408, which is connected to a baffle plate 409, which is slidably connected to the bottom of the liquid storage box 2, and a closing plate 410 is slidably connected to the bottom of the capacity box 408, which is fixed to a connecting piece on the body 1, a disk body 405 is fixedly connected to the central axis 402, and rollers 406 are rotatably connected to both sides of the disk body 405, and an abutment plate is connected to the bottom of the baffle plate 409, which abuts against the roller 406. As the ring body 401 continues to rotate, the disc body 405 will slide against the abutment plate, thereby driving the blocking plate 409 on the abutment plate to slide horizontally, and then the blocking plate 409 will drive the capacity box 408 to move horizontally, so that the capacity box 408 slides directly from the bottom of the first hole 407 to the bottom of the first hole 407, and is connected with the position of the drainage hole 414, and at this time, the right part of the blocking plate 409 will block the passage of the first hole 407 to prevent the solution inside the liquid storage box 2 from being lost. Therefore, as the disc body 405 rotates, the detection solution inside the liquid storage box 2 will flow into the capacity box 408 from the position of the first hole 407. The entire capacity box 408 is similar to a measuring cup. Each time the capacity box 408 moves horizontally, a measuring cup of solution will be automatically fed, so that it will flow into the filter cup 5 from the position of the drainage hole 414, which solves the problem of the operator manually feeding the solution, and the operator does not need to operate redundantly as a whole, and the operation is very convenient.

[0035] Furthermore, a first hole 407 is provided at the bottom of the liquid storage box 2, a drainage hole 414 is provided on the closing plate 410, a guide rod 412 is slidably connected to the connecting member, a return spring 413 is sleeved on the surface of the guide rod 412, and a pull plate 411 is connected to one end of the guide rod 412, and the pull plate 411 is fixed to the bottom of the blocking plate 409. In the initial stage, when there is no extrusion and sliding of the disk body 405, the elastic force of the return spring 413 will push the pull plate 411 to move horizontally, thereby driving the sliding of the blocking plate 409, so that the capacity box 408 will be reset to the bottom of the first hole 407.

[0036] In addition, the disinfection component includes a fixed shaft 415, which is fixed on the liquid storage box 2. A volume sleeve 416 is installed on the fixed shaft 415, and an alcohol solution is placed in the volume sleeve 416. An extrusion plate 417 is slidably connected to the volume sleeve 416. A baffle 421 is installed at the bottom of the extrusion plate 417, and a drip hole is opened at the bottom of the volume sleeve 416. When the ring body 401 rotates a certain angle, the filter head 403 will be under the volume sleeve 416. At this time, the push rod 422 on the central axis 402 will form a pressing contact with the extrusion plate 417, and then drive the baffle 421 at the bottom of the extrusion plate 417 to slide horizontally, and then the drip hole at the bottom of the volume sleeve 416 will be exposed, so the internal alcohol solution will drip onto the filter head 403, and the bottom slope of the push rod 422 will be squeezed and contacted with the igniter 418, thereby realizing extrusion ignition, and the bottom of the igniter 418 is facing the filter head 403, and the alcohol solution will drip onto the filter head 403. Therefore, after the igniter 418 is ignited, the alcohol dripping on the filter head 403 will be ignited. After ignition, the surface of the filter head 403 will be sterilized and disinfected as a whole, without the need for the operator to manually ignite and disinfect, and the overall automatic ignition sterilization and disinfection is achieved. Therefore, the operator can wait for the alcohol to burn out automatically after it is completed, and then continue to rotate.

[0037] In addition, a support rod 419 is slidably connected inside the fixed shaft 415, one end of the support rod 419 is connected to the extrusion plate 417, a compression spring 420 is sleeved on the surface of the support rod 419, an igniter 418 is installed on the volume sleeve 416, and a push rod 422 is installed on the central shaft 402. Through the provided compression spring 420, when the push rod 422 rotates away from the extrusion plate 417, the extrusion plate 417 will be pushed by elastic force to slide back and reset, thereby closing the drip hole at the bottom of the volume sleeve 416 again to prevent excessive alcohol leakage for a long time.

[0038] It is worth noting that the membrane installation assembly includes a storage box 423, which is installed on the liquid storage box 2. Multiple filter frames 425 are installed in the storage box 423, and a membrane body 426 is installed in the filter frame 425. A push groove 424 is opened at the bottom of the storage box 423, and a push frame 427 is slidably connected to the push groove 424. A connecting rod 428 is slidably connected to the push frame 427. One end of the connecting rod 428 is installed on the storage box 423, and a support spring 429 is sleeved on the surface of the connecting rod 428. The support spring 429 is located between the push frame 427 and the storage box 423. After the ring body 401 is rotated 90 degrees, the filter head 403 will be located at the bottom of the storage box 423, and the disk body 405 will contact the push frame 427, and then the push frame 427 will be controlled to move horizontally by using the extrusion sliding of the inclined surface, and then the push frame 427 will push the filter frame 425 at the bottom of the storage box 423 out, so as to push it out from the position of the push groove 424, and then the membrane body 426 on the filter frame 425 will be automatically laid on the filter head 403, so there is no need for the operator to manually install the filter membrane at this time, and the filter membrane can be directly installed automatically, making the overall operation more convenient. The disinfection component and the membrane installation component can realize the automatic ignition disinfection of the filter head 403, and the automatic installation of the filter membrane, which directly simplifies the operation process that the operator needs to operate in the early stage, making the detection personnel more quick and convenient during detection.

[0039] Working principle: First, in the initial stage, the operator can rotate the ring body 401 to drive the rotation of the central shaft 402, and the central shaft 402 will drive the filter head 403 on the guide sleeve 404 to rotate. The rotation center is the axis point of the central shaft 402. When gradually rotating, the disk body 405 on the central shaft 402 will also rotate synchronously. After rotating to a certain angle, the filter head 403 will be below the volume sleeve 416. At this time, the push rod 422 on the central shaft 402 will form a pressing contact with the extrusion plate 417, and then drive the baffle 421 at the bottom of the extrusion plate 417. Slide horizontally, and then the drip hole at the bottom of the volume sleeve 416 will be exposed, so the internal alcohol solution will drip onto the filter head 403, and the bottom slope of the push rod 422 will be squeezed and contacted with the igniter 418, so as to realize extrusion ignition, and the bottom of the igniter 418 is facing the filter head 403, and the alcohol solution will drip onto the filter head 403, so after the igniter 418 is ignited, the alcohol dripping on the filter head 403 will be ignited, and after ignition, the surface of the filter head 403 will be sterilized and disinfected as a whole, without the need for manual ignition and disinfection by the operator. The entire filter head 403 and the guide sleeve 404 are made of steel materials, so the alcohol will not have a structural impact on them after burning, and only the surface of the filter head 403 will be sterilized at high temperature. The structure of the igniter 418 is similar to the structural shape of a "lighter", so during the rotation of the ring body 401, the alcohol dripping on the filter head 403 will be ignited while the alcohol dripping on the filter head 403 is dripped, and the overall automation is realized. The operation process of the operator is simplified, and the detection is more rapid. After ignition, wait for the alcohol to burn completely, then extinguish automatically, and then continue to rotate. After rotating ninety degrees, the filter head 403 will be located at the bottom of the storage box 423, and the disk 405 will come into contact with the push rack 427. Then, the push rack 427 will be controlled to move horizontally by squeezing and sliding on the inclined surface. Then, the push rack 427 will push the filter rack 425 at the bottom of the storage box 423 out, thereby pushing it out from the push groove 424. Then, the membrane body 426 on the filter rack 425 will be automatically laid on the filter head 403. Therefore, there is no need for the operator to manually install the filter membrane at this time, and the filter membrane can be directly and automatically installed, making the overall operation easier.Afterwards, as the ring body 401 continues to rotate, after the filter head 403 is separated from the storage box 423, the operator needs to directly sleeve the filter cup 5 on the filter head 403, and then continue to rotate to rotate the filter cup 5 installed on the filter head 403 to the bottom of the liquid storage box 2. At this time, the disk body 405 will form an abutment slide with the abutment plate, thereby driving the blocking plate 409 on the abutment plate to slide horizontally, and then the blocking plate 409 will drive the capacity box 408 to move horizontally, so that the capacity box 408 slides directly from the bottom of the first hole 407 to separate from the bottom of the first hole 407, and is connected with the position of the drainage hole 414. At this time, the right part of the blocking plate 409 will close the channel of the first hole 407 to prevent the solution inside the liquid storage box 2 from being lost. In the initial stage, it is not affected. When the disk body 405 is squeezed and slid, the elastic force of the reset spring 413 will push the pull plate 411 to move horizontally, and then drive the blocking plate 409 to slide. At this time, the capacity box 408 will be reset to the bottom of the first hole 407, and the detection solution inside the liquid storage box 2 will flow into the interior of the capacity box 408 from the position of the first hole 407. Therefore, the entire capacity box 408 is similar to a measuring cup. Each time the capacity box 408 moves horizontally, a measuring cup of solution will be automatically fed, thereby flowing it into the interior of the filter cup 5 from the position of the drainage hole 414. If the capacity of a measuring cup is not enough, the inspector can repeatedly rotate the filter head 403 in a small range forward and reverse direction, so that it can automatically take out a certain volume of detection solution and repeatedly flow it in from the hole. After the filter cup 5 is filled with the solution to be tested, the diaphragm liquid pump inside the body 1 is started, which will generate negative pressure suction to suck the solution inside the filter cup 5 and discharge it from the drainage tube 3. The substances in the solution will pass through the membrane body 426, so the microorganisms will adhere to the membrane body 426, thereby realizing the collection, culture and detection of the microorganisms.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A microbial limit detector for food testing, characterized in that: include Body (1); A liquid storage box (2), used for storing the solution to be tested; A drainage tube (3), used for draining the solution after detection; Processing device (4); The processing device (4) comprises a matching component, a quantitative component, a disinfection component and a film installation component; The matching component rotates to drive the quantitative component to quantitatively take the detection solution from the liquid storage box (2); The disinfection component is used to disinfect the matching component; The membrane installation assembly is used for automatically controlling the installation of the filter membrane.

2. A microbial limit detector for food testing according to claim 1, characterized in that: The liquid storage box (2) is mounted on the machine body (1) via a connecting piece, one side of the machine body (1) is mounted with a drainage pipe (3), and a diaphragm liquid pump is installed inside the machine body (1).

3. A microbial limit detector for food testing according to claim 1, characterized in that: The mating component comprises a ring body (401), the center of the ring body (401) is fixedly connected to a central axis (402), two guide sleeves (404) are installed on the central axis (402) via a connecting piece, a filter head (403) is installed on the guide sleeve (404), and a magnetic ring is arranged on the body (1), and the magnetic ring is magnetically connected to the guide sleeve (404).

4. A microbial limit detector for food testing according to claim 3, characterized in that: The quantitative component comprises a capacity box (408), the capacity box (408) is connected to a baffle plate (409), the baffle plate (409) is slidably connected to the bottom of the liquid storage box (2), the bottom of the capacity box (408) is slidably connected to a closing plate (410), the closing plate (410) is fixed to a connecting piece on the machine body (1), the central axis (402) is fixedly connected to a disk body (405), both sides of the disk body (405) are rotatably connected to rollers (406), the bottom of the baffle plate (409) is connected to an abutment plate, and the abutment plate abuts against the roller (406).

5. A microbial limit detector for food testing according to claim 4, characterized in that: The bottom of the liquid storage box (2) is provided with a first hole (407), the closing plate (410) is provided with a drainage hole (414), the connecting member is slidably connected with a guide rod (412), the surface of the guide rod (412) is sleeved with a return spring (413), one end of the guide rod (412) is connected with a pull plate (411), and the pull plate (411) is fixed to the bottom of the blocking plate (409).

6. A microbial limit detector for food testing according to claim 5, characterized in that: The disinfection assembly comprises a fixed shaft (415), the fixed shaft (415) is fixed on the liquid storage box (2), a volume sleeve (416) is installed on the fixed shaft (415), an alcohol solution is placed in the volume sleeve (416), an extrusion plate (417) is slidably connected to the volume sleeve (416), a baffle (421) is installed at the bottom of the extrusion plate (417), and a drip hole is opened at the bottom of the volume sleeve (416).

7. A microbial limit detector for food testing according to claim 6, characterized in that: A support rod (419) is slidably connected inside the fixed shaft (415), one end of the support rod (419) is connected to the extrusion plate (417), a compression spring (420) is sleeved on the surface of the support rod (419), an igniter (418) is installed on the volume sleeve (416), and a push rod (422) is installed on the central shaft (402).

8. A microbial limit detector for food testing according to claim 8, characterized in that: The membrane assembly comprises a storage box (423), the storage box (423) is installed on the liquid storage box (2), a plurality of filter frames (425) are installed in the storage box (423), a membrane body (426) is installed in the filter frame (425), a push groove (424) is provided at the bottom of the storage box (423), a push frame (427) is slidably connected to the push groove (424), a connecting rod (428) is slidably connected to the push frame (427), one end of the connecting rod (428) is installed on the storage box (423), a support spring (429) is sleeved on the surface of the connecting rod (428), and the support spring (429) is located between the push frame (427) and the storage box (423).

9. A microbial limit detector for food testing according to claim 8, characterized in that: A filter cup (5) is clamped on the filter head (403), and the filter cup (5) is located below the drainage hole (414).

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