Food microbial limit detection filtering device

Abstract

The utility model relates to a food microbial limit detection filtering device, which aims to solve the technical problem of low sealing precision of the current filtering cup, and comprises a detector, the top end of the detector is communicated with a butt joint sleeve, a filtering membrane is detachably arranged in the butt joint sleeve, the upper end of the butt joint sleeve is connected with the filtering cup in a sealing manner, and the butt joint sleeve is connected with the filtering cup. Four groups of first springs are arranged between the connecting block and the partition plate, the filter cup can be pushed to move upwards through elastic force of the first springs, the control plate can be pulled to move upwards through the connecting rod and be attached to the bottom side of the partition plate, and the filter cup can be pushed to move upwards through the liquid injection hopper. The liquid guide hole in the surface of the partition plate can be automatically blocked by the blocking block on the surface of the control plate, the upper end of the filter cup can be further automatically blocked, meanwhile, the upper surface of the control plate can be attached to the sealing gasket on the bottom side of the partition plate, and the sealing effect of the control plate on the liquid guide hole is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to food microbiological limit detection field, concretely is a kind of food microbiological limit detection filtering device. BACKGROUND

[0002] Microbial limit filtration system is the professional system for microbial test of liquid sample, which is composed of detector and filter, and its working principle is that the liquid to be detected is injected into the filter which has been assembled, and the microorganism in the liquid to be detected is intercepted on the filter membrane by negative pressure filtration of the diaphragm liquid pump built in the microbial filtration device, and the filter membrane is taken out by membrane taking device and transferred to the prepared solid culture medium.

[0003] According to the disclosed patent CN221235601U, a food microbiological limit detection filtering device is provided. By adjusting the supply rotation mechanism, the liquid injection disc can be rotated in the arc-shaped through slot on the sealing plug. This allows the liquid injection hole to rotate to the bottom of the arc-shaped through slot, forming a communication process for the liquid injection disc. At the same time, the liquid injection bucket is rotated towards the front of the detector, making the liquid injection bucket inclined towards the front of the detector. This allows the liquid to be detected to be sent into the liquid injection disc through the liquid injection bucket, and then into the filter cup. This can effectively prevent the liquid to be detected from spilling when pouring from the top of the filter cup.

[0004] In the process of implementing the utility model, the inventors found that the above-mentioned problems in the prior art have not been solved. The above-mentioned case adjusts the supply rotation mechanism in reverse, and the liquid injection hole moves to the inner wall of the arc-shaped through slot, so that the liquid injection disc seals the top surface of the sealing plug. However, there is a gap between the supply rotation mechanism and the inner wall of the arc-shaped through slot during rotation, which limits the sealing effect of the filter cup. Therefore, a new technical solution is needed to solve this problem. UTILITY MODEL CONTENTS

[0005] The utility model aims to overcome the shortcomings of the prior art, meet the needs of reality, and provide a food microbiological limit detection filtering device to solve the technical problem of low sealing precision of the current filter cup.

[0006] In order to achieve the purpose of the utility model, the technical scheme that the utility model adopts is as follows: a food microorganism limit detection filtering device is designed, which comprises a detector, a butt joint sleeve is communicated with the top end of the detector, a filter membrane piece is detachably installed in the inside of the butt joint sleeve, a filtering cup is sealingly connected with the upper end of the butt joint sleeve, and the filtering cup further comprises a liquid injection bucket, the bottom end of the liquid injection bucket is arranged in the inside of the filtering cup; a control mechanism is used for the introduction and sealing of the liquid to be detected in the inside of the filtering cup, the control mechanism comprises a partition plate and a control plate, the partition plate is horizontally fixedly installed at the upper end in the inside of the filtering cup, the partition plate is arranged at the bottom end of the liquid injection bucket, a liquid guide hole is formed through the upper surface of the partition plate, a L-shaped connecting block is fixedly installed on the outside of the bottom end of the liquid injection bucket, connecting rods are vertically fixedly installed at the four corners of the bottom side of the connecting block, the control plate is horizontally arranged at the bottom side of the partition plate, the bottom ends of the four connecting rods are fixedly connected with the four corners on the upper surface of the control plate, the upper surface of the control plate is uniformly provided with plugs, the plugs on the surface of the control plate and the liquid guide holes on the bottom side of the partition plate are one-to-one corresponding, the plugs and the liquid guide holes are movably connected, a liquid discharge hole is formed through the upper surface of the control plate, the liquid guide holes and the liquid discharge hole are arranged in a staggered mode, four first springs are arranged on the upper surface of the partition plate; a positioning mechanism is used for the positioning of the liquid injection bucket and the control plate, the positioning mechanism comprises two positioning grooves, the two positioning grooves are arranged above the inner wall on one side of the filtering cup, a limiting groove is formed in the side of the connecting block close to the positioning groove, a positioning pin is slidably connected with the inside of the limiting groove, one end of the positioning pin arranged outside the limiting groove is movably connected with the positioning groove, a second spring is arranged on the inside of the limiting groove, and the size of the positioning pin is matched with the limiting groove and the positioning groove.

[0007] Preferably, the size of the plug is matched with the liquid guide hole, a sealing gasket is bonded to the bottom side of the partition plate, and the surface of the sealing gasket is attached to the surface of the control plate.

[0008] Preferably, connecting grooves are formed through the four corners on the upper surface of the partition plate, and the connecting rods on the bottom side of the connecting block are slidably connected with the connecting grooves formed in the partition plate.

[0009] Preferably, the first spring is sleeved outside the connecting rod, and the two ends of the first spring are fixedly connected with the bottom side of the connecting block and the surface of the partition plate respectively.

[0010] Preferably, a guide groove is horizontally formed in one end of the positioning pin arranged on the inside of the limiting groove, a guide rod is slidably connected with the inside of the guide groove, and one end of the guide rod is fixedly connected with the inner wall of the limiting groove.

[0011] Preferably, the second spring is sleeved outside the guide rod, and the two ends of the second spring are fixedly connected with the positioning pin and the inner wall of the limiting groove respectively.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The utility model discloses a connecting block is set with four groups of first spring between the baffle, through the elastic force of first spring, can promote the filter cup to move upwards, through the connecting rod can pull the control panel to move upwards and the bottom side of baffle is pasted together, the block of control panel surface can automatic to the liquid guide hole on the baffle surface is sealed, further can automatic to the upper end of filter cup is sealed, through the filter membrane piece in detection instrument and the docking sleeve inside, can effectively carry out the filtration operation to the liquid to be detected, on the contrary, promote the liquid injection bowl to move downwards, can promote the control panel to move downwards and separates with the baffle, the block of control panel surface moves out from the liquid guide hole at this moment, through the liquid discharge hole on the control panel surface the liquid to be detected is guided into the filter cup, convenient and fast.

[0014] 2. The utility model discloses a positioning pin and limit groove sliding connection, through the elastic force of second spring can promote the one end of positioning pin to move out of limit groove and insert to the positioning groove outside filter cup, further locates the fixed liquid injection bowl, can improve the use stability of liquid injection bowl. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is filter cup and liquid injection bowl connection schematic view of the utility model;

[0017] Figure 3 It is the schematic view of A part of the utility model;

[0018] Figure 4 It is control panel schematic view of the utility model;

[0019] Figure 5 It is the bottom side view of baffle of the utility model;

[0020] In the drawing: 1, detection instrument;11, docking sleeve;12, filter membrane piece;13, filter cup;14, liquid injection bowl;15, baffle;16, liquid guide hole;17, connecting block;18, connecting rod;19, control panel;2, liquid discharge hole;21, block;22, sealing gasket;23, first spring;24, connecting groove;3, positioning groove;31, limit groove;32, positioning pin;33, second spring;34, guide rod;35, guide groove. DETAILED DESCRIPTION

[0021] The utility model is further explained in connection with the drawings and examples:

[0022] A kind of food microbiological limit detection filter device, refer to Figures 1 to 5The utility model provides a detection device for liquid, including detection appearance 1, the top of detection appearance 1 is connected with the docking sleeve 11, the inside detachable installation of docking sleeve 11 has filter membrane piece 12, the upper end sealed connection of docking sleeve 11 has filter cup 13, still includes liquid injection cup 14, the bottom of liquid injection cup 14 is placed in the inside of filter cup 13;Control mechanism: for the import and seal of the liquid in filter cup 13 inside, control mechanism includes baffle 15 and control board 19, baffle 15 is horizontally fixedly installed in the upper end inside filter cup 13, and baffle 15 is placed in the bottom of liquid injection cup 14, the upper surface of baffle 15 is penetrated and set with liquid guide hole 16, the outside fixed installation of the bottom of liquid injection cup 14 has the connection block 17 of back -shaped, the four corners of the bottom side of connection block 17 are vertically fixedly installed with connecting rod 18, control board 19 is horizontally placed in the bottom side of baffle 15, and the bottom end of four groups of connecting rod 18 is fixedly connected with the four corners on the upper surface of control board 19, and the upper surface of control board 19 is evenly installed with the plug 21, and the plug 21 on the surface of control board 19 corresponds with the liquid guide hole 16 on the bottom side of baffle 15, and the plug 21 is movably connected with the liquid guide hole 16, and the size of plug 21 and liquid guide hole 16 is matched, and the upper surface of control board 19 is penetrated and set with liquid discharge hole 2, and liquid guide hole 16 and liquid discharge hole 2 are set in staggered, and the upper surface of baffle 15 is provided with four groups of first spring 23.

[0023] Through the four groups of first spring 23 between connection block 17 and baffle 15, the filter cup 13 can be pushed to move up by the elastic force of first spring 23, and the control board 19 can be pulled to move up and adhere to the bottom side of baffle 15 by connecting rod 18, at this time, the plug 21 on the surface of control board 19 can be inserted into the liquid guide hole 16 on the surface of baffle 15, so as to block the liquid guide hole 16, and further, the upper end of filter cup 13 can be automatically blocked, then the membrane liquid pump built-in detection appearance 1 carries out negative pressure filtration, and the microorganism in the liquid to be measured is intercepted on filter membrane piece 12, when the staff needs to guide the liquid to be measured into filter cup 13, the staff presses liquid injection cup 14 to move down, which can push control board 19 to move down and separate from baffle 15, at this time, the plug 21 on the surface of control board 19 is removed from the liquid guide hole 16, then the liquid to be detected can be guided into filter cup 13 through liquid injection cup 14, and guided into the lower end inside filter cup 13 through liquid guide hole 16 and liquid discharge hole 2 on the surface of control board 19, which is convenient and fast.

[0024] Specifically, referring to Figures 1 to 5 The bottom side of baffle 15 is bonded with sealing gasket 22, when the plug 21 on the upper surface of control board 19 is inserted into the liquid guide hole 16 set on baffle 15, the upper surface of control board 19 can adhere to the sealing gasket 22 on the bottom side of baffle 15, so as to improve the connection sealing property of control board 19 and baffle 15, and further improve the sealing effect of control board 19 on liquid guide hole 16.

[0025] Further, referring toFigures 1 to 3 , Positioning mechanism: used for positioning the liquid injection funnel 14 and the control board 19, the positioning mechanism includes two groups of positioning grooves 3, the two groups of positioning grooves 3 are opened above the inner wall of one side of the filter cup 13, and a limiting groove 31 is opened on the side of the connecting block 17 close to the positioning groove 3. A positioning pin 32 is slidably connected to the inner side of the limiting groove 31, and the positioning pin 32 is placed on the outer side of the limiting groove 31 and is movably connected to the positioning groove 3. A second spring 33 is provided on the inner side of the limiting groove 31, and the positioning pin 32 matches the size of the limiting groove 31 and the positioning groove 3.

[0026] The positioning pin 32 is slidably connected to the limiting groove 31. When the liquid injection funnel 14 moves to align the positioning pin 32 with the positioning groove 3, the elastic force of the second spring 33 can push one end of the positioning pin 32 out of the limiting groove 31 and insert it into the positioning groove 3 on the outside of the filter cup 13, further limiting and fixing the liquid injection funnel 14, thereby improving the stability of the control board 19 at the bottom end of the liquid injection funnel 14. Conversely, pushing one end of the positioning pin 32 out of the positioning groove 3 makes it convenient to adjust the use position of the liquid injection funnel 14 and the control board 19.

[0027] It is worth noting that, see Figures 1 to 3 The four corners of the upper surface of the partition 15 are penetrated by connecting grooves 24, and the connecting rod 18 on the bottom side of the connecting block 17 is slidably connected to the connecting groove 24 opened on the partition 15. The first spring 23 is sleeved on the outside of the connecting rod 18, and the two ends of the first spring 23 are respectively fixedly connected to the bottom side of the connecting block 17 and the surface of the partition 15. The positioning pin 32 is placed on one end of the inner side of the limiting groove 31 and is horizontally provided with a guide groove 35. The inner side of the guide groove 35 is slidably connected with a guide rod 34, and one end of the guide rod 34 is fixedly connected to the inner wall of the limiting groove 31. The second spring 33 is sleeved on the outside of the guide rod 34, and the two ends of the second spring 33 are respectively fixedly connected to the positioning pin 32 and the inner wall of the limiting groove 31.

[0028] By slidingly connecting the connecting rod 18 on the bottom side of the connecting block 17 with the connecting groove 24 opened on the partition 15, the movement stability of the liquid injection bucket 14 and the control plate 19 can be improved. By slidingly connecting the guide rod 34 on the inside of the limiting groove 31 with the guide groove 35 inside the positioning pin 32, the movement stability of the positioning pin 32 can be improved. Moreover, the connecting rod 18 and the guide rod 34 can limit the first spring 23 and the second spring 33 to prevent the first spring 23 and the second spring 33 from tilting during the compression and extension process, which affects the use effect of the first spring 23 and the second spring 33.

[0029] In addition, the components designed in this utility model are all universal standard parts or components known to technical personnel in this field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in this field. Needless to say, the content protected by this utility model does not involve improvements to internal structures and methods.

[0030] The embodiments of the present application disclose the preferred embodiments, but are not limited to the same, and the ordinary skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as the spirit of the present application is not deviated, the present application is within the protection scope.

Claims

1. A food microbial limit detection and filtering device, comprising a detector (1), wherein the top end of the detector (1) is connected to a docking sleeve (11), a filter membrane (12) is detachably mounted inside the docking sleeve (11), and a filter cup (13) is sealedly connected to the upper end of the docking sleeve (11), characterized in that: It also includes a liquid injection hopper (14), the bottom end of the liquid injection hopper (14) is placed inside the filter cup (13); Control mechanism: used for introducing and sealing the liquid to be tested inside the filter cup (13), the control mechanism comprises a partition (15) and a control board (19), the partition (15) is fixedly installed horizontally at the upper end of the filter cup (13), and the partition (15) is placed at the bottom end of the liquid injection bucket (14), the upper surface of the partition (15) is penetrated by a liquid guide hole (16), the outer side of the bottom end of the liquid injection bucket (14) is fixedly installed with a U-shaped connecting block (17), the four corners of the bottom side of the connecting block (17) are vertically fixedly installed with connecting rods (18), and the control board (19) is horizontally placed on the partition (15), the bottom ends of the four groups of connecting rods (18) are respectively fixedly connected to the four corners of the upper surface of the control plate (19), the upper surface of the control plate (19) is evenly installed with blocking blocks (21), the blocking blocks (21) on the surface of the control plate (19) correspond one to one with the liquid guide holes (16) on the bottom side of the partition (15), the blocking blocks (21) are movably connected with the liquid guide holes (16), the upper surface of the control plate (19) is penetrated by a liquid drainage hole (2), the liquid guide hole (16) and the liquid drainage hole (2) are staggered, and the upper surface of the partition (15) is provided with four groups of first springs (23); Positioning mechanism: used for positioning the liquid injection hopper (14) and the control panel (19), the positioning mechanism comprises two groups of positioning grooves (3), the two groups of positioning grooves (3) are provided above the inner wall of one side of the filter cup (13), the connecting block (17) is provided with a limiting groove (31) on a side close to the positioning groove (3), the inner side of the limiting groove (31) is slidably connected with a positioning pin (32), one end of the positioning pin (32) is placed outside the limiting groove (31) and is movably connected to the positioning groove (3), the inner side of the limiting groove (31) is provided with a second spring (33), and the size of the positioning pin (32) matches the size of the limiting groove (31) and the positioning groove (3).

2. A food microbial limit detection filter device according to claim 1, characterized in that: The blocking block (21) matches the size of the liquid guide hole (16), a sealing gasket (22) is bonded to the bottom side of the partition (15), and the sealing gasket (22) is in contact with the surface of the control panel (19).

3. A food microbial limit detection filter device according to claim 1, characterized in that: Connecting grooves (24) are provided through the four corners of the upper surface of the partition (15), and the connecting rods (18) on the bottom side of the connecting block (17) are slidably connected to the connecting grooves (24) provided on the partition (15).

4. A food microbial limit detection filter device according to claim 1, characterized in that: The first spring (23) is sleeved on the outside of the connecting rod (18), and two ends of the first spring (23) are fixedly connected to the bottom side of the connecting block (17) and the surface of the partition (15), respectively.

5. A food microbial limit detection filter device according to claim 1, characterized in that: A guide groove (35) is horizontally provided at one end of the positioning pin (32) located inside the limiting groove (31), a guide rod (34) is slidably connected to the inside of the guide groove (35), and one end of the guide rod (34) is fixedly connected to the inner wall of the limiting groove (31).

6. A food microbial limit detection filter device according to claim 5, characterized in that: The second spring (33) is sleeved on the outside of the guide rod (34), and the two ends of the second spring (33) are fixedly connected to the positioning pin (32) and the inner wall of the limiting groove (31) respectively.

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