Suction filtration device for food additive detection

Abstract

The utility model discloses a suction filtration device for food additive detection, which relates to the technical field of food additive detection and comprises a suction pipe, a suction filtration component is arranged at the bottom end of the suction pipe, a collection component is arranged at the bottom of the suction filtration component, the suction filtration component is used for filtering a mobile phase, and the collection component is used for collecting the filtered mobile phase. And the exterior of the exhaust pipe is fixedly sleeved with a carrier plate. The bolt is screwed through a wrench, so that the bolt pulls the air pump to move downwards along with the plug, and after the plug is connected with the socket, the air pump is kept in a power-on state, and air in the suction filtration assembly can be pumped outwards until the negative pressure of the suction filtration assembly is low to force the piston to pull the socket to be separated from the plug. When the internal air pressure rises, the spring can push the socket to move upwards to force the plug to be connected with the socket again, so that the operation of the air pump is autonomously controlled, the air in the suction filtration assembly is discharged in time, and the suction filtration operation of the mobile phase is better completed.

Description

Technical Field

[0001] The utility model relates to the technical field of food additive detection, and particularly relates to a suction filtration device for food additive detection. Background Art

[0002] Food additives are non-nutritive substances that people deliberately add in small amounts to food to improve the appearance, flavor, tissue structure or storage properties of food. They are also artificial or natural substances that people add in small amounts to improve the quality, color, aroma and taste of food, and at the same time for the needs of preservation, anti-corrosion and processing technology. Of course, food additives also include food flavors, processing aids for the food industry, and basic substances in gum-based candies.

[0003] The detection of food additives requires the preparation of a mobile phase. After the preparation of the mobile phase, a suction filtration device is needed to remove the impurities inside it. The use of the suction filtration device requires the assistance of an air pump to export the air in the suction filtration tube, so that the air pressure in the suction filtration tube is lower than the external atmospheric pressure. In this way, the suction filtration speed of the mobile phase can be accelerated. However, during the continuous use of the suction filtration tube, the internal air pressure will gradually increase, and the external air will also penetrate into the suction filtration tube along the connection gap, resulting in the increase of the air pressure in the suction filtration tube with the increase of the suction filtration time, affecting the suction filtration efficiency of the mobile phase. It is very difficult to ensure the timeliness of air pressure regulation by manually controlling the operation of the air pump, which is not conducive to the suction filtration operation of the mobile phase. Summary of the Utility Model

[0004] The purpose of this application is to provide a suction filtration device for food additive detection to solve the problem proposed in the above background art that the use of the suction filtration device requires the assistance of an air pump to export the air in the suction filtration tube, so that the air pressure in the suction filtration tube is lower than the external atmospheric pressure. In this way, the suction filtration speed of the mobile phase can be accelerated. However, during the continuous use of the suction filtration tube, the internal air pressure will gradually increase, and the external air will also penetrate into the suction filtration tube along the connection gap, resulting in the increase of the air pressure in the suction filtration tube with the increase of the suction filtration time, affecting the suction filtration efficiency of the mobile phase. It is very difficult to ensure the timeliness of air pressure regulation by manually controlling the operation of the air pump, which is not conducive to the suction filtration operation of the mobile phase.

[0005] To achieve the above object, the present application provides the following technical solution: A suction filtration device for food additive detection, including a suction pipe, a suction filtration component is provided at the bottom end of the suction pipe, a collection component is provided at the bottom of the suction filtration component, the suction filtration component is used for filtering the mobile phase, the collection component is used for collecting the filtered mobile phase, a carrier plate is fixedly sleeved outside the suction pipe, a bolt is threadedly connected to the carrier plate, the top end of the bolt is rotationally connected with a fixed block through a bearing, an air pump is provided on the fixed block, a guide rod is provided at the bottom of the air pump, a sliding groove for the guide rod to slide is opened on the carrier plate, an air delivery pipe is fixedly connected between the air inlet of the air pump and the suction pipe, a carrier column is provided at the bottom of the air pump, a plug is fixed at the bottom end of the carrier column, a carrier block is fixed inside the suction pipe, a spring is fixed on the upper surface of the carrier block, a piston is fixed at the top end of the spring, the piston is slidably matched with the inner wall of the suction pipe, and a socket is fixed at the top of the piston. After the plug and the socket are connected, it is used for the power-on operation of the air pump.

[0006] Further, a limiting rod is fixed at the bottom of the piston, a through hole for the limiting rod to slide is opened on the carrier block, and the spring is sleeved outside the limiting rod.

[0007] Further, the suction filtration component includes a suction filtration tube, the suction pipe and the suction filtration tube are communicated with each other, the collection component is arranged at the bottom end of the suction filtration tube, a diversion hopper is fixedly connected to the top end of the suction filtration tube, a filtration cylinder is fixedly connected to the top of the diversion hopper, a feed hopper is fixedly connected to the top of the filtration cylinder, a plurality of carrier rings linearly arranged in the longitudinal direction are fixed inside the filtration cylinder, and a suction filter screen is fixed on the upper surface of the carrier ring.

[0008] Further, a fixing plate is fixed at the top of the filtration cylinder, a driving motor is arranged on the fixing plate, a transmission rod is fixed at the output shaft end of the driving motor, a plurality of groups of stirring rods are fixed on the transmission rod, the plurality of groups of stirring rods are linearly arranged in the longitudinal direction, and the plurality of groups of stirring rods and the plurality of suction filter screens are arranged at intervals.

[0009] Further, a sleeve is fixedly penetrated on the suction filter screen, the sleeve is sleeved outside the transmission rod, and a sealing ring is arranged at the joint of the sleeve and the transmission rod.

[0010] Further, the collection component includes a reagent bottle, the reagent bottle is threadedly connected to the suction filtration tube, a support plate is fixedly sleeved outside the reagent bottle, a rubber sheet is fixed on the upper surface of the support plate, and the bottom end of the suction filtration tube is in close fit with the rubber sheet.

[0011] In summary, the technical effects and advantages of the present utility model:

[0012] 1. In the present utility model, by turning the bolt with a wrench, the bolt pulls the air pump and the plug to move downward. After the plug is connected to the socket, the air pump remains powered on, and the air in the suction filtration assembly can be pumped outwards. The plug under the traction of the bolt can squeeze the socket to move downward, forcing the spring to be in a compressed state. In this way, according to the compression amount of the spring, the negative pressure in the suction filtration assembly can be adjusted until the negative pressure in the suction filtration assembly is low enough to force the piston to pull the socket and the plug to separate. As the use time of the suction filtration assembly increases, the internal air pressure rises, and the spring can push the socket upward, forcing the plug and the socket to be connected again, thereby autonomously controlling the operation of the air pump, timely discharging the air in the suction filtration assembly, keeping the negative pressure in the suction filtration assembly within a suitable range, and better completing the suction filtration operation of the mobile phase.

[0013] 2. In the present utility model, a number of suction filters arranged linearly in the vertical direction are used to filter the mobile phase in sequence, effectively removing impurities in the mobile phase, making the suction filtration effect of the mobile phase better. The drive rod driven by the drive motor drives a number of stirring rods to rotate, which can stir the mobile phase on each level of the suction filter, so that the impurities in the mobile phase can float along with it, which is more conducive to the suction filtration operation of the mobile phase. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments or the prior description.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a suction filtration device for food additive detection in an embodiment of the present application;

[0016] Figure 2 It is a position relationship diagram of the suction pipe, bolt, air pump, and air delivery pipe in an embodiment of the present application;

[0017] Figure 3 It is an internal structural schematic diagram of the suction pipe in an embodiment of the present application;

[0018] Figure 4 It is a structural schematic diagram of the suction filtration assembly in an embodiment of the present application;

[0019] Figure 5 It is a structural schematic diagram of the collection assembly in an embodiment of the present application.

[0020] In the figure: 1. Suction pipe; 2. Carrier plate; 3. Bolt; 4. Fixed block; 5. Air pump; 6. Guide rod; 7. Air delivery pipe; 8. Carrier column; 9. Plug; 10. Carrier block; 11. Spring; 12. Piston; 13. Socket; 14. Limit rod; 15. Suction filter pipe; 16. Flow guide hopper; 17. Filter cylinder; 18. Feed hopper; 19. Carrier ring; 20. Suction filter screen; 21. Fixed plate; 22. Driving motor; 23. Transmission rod; 24. Stirring rod; 25. Sleeve; 26. Reagent bottle; 27. Support plate; 28. Rubber sheet. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Embodiment: Refer to Figures 1-5 A suction filtration device for food additive detection as shown, which includes a suction pipe 1. A suction filtration assembly is provided at the bottom end of the suction pipe 1, and a collection assembly is provided at the bottom of the suction filtration assembly. The suction filtration assembly is used for filtering the mobile phase, and the collection assembly is used for collecting the filtered mobile phase. A carrier plate 2 is fixedly sleeved outside the suction pipe 1. A bolt 3 is threadedly connected to the carrier plate 2. The top end of the bolt 3 is rotatably connected to a fixed block 4 through a bearing. An air pump 5 is provided on the fixed block 4. A guide rod 6 is provided at the bottom of the air pump 5. A sliding groove for the guide rod 6 to slide is formed on the carrier plate 2. An air delivery pipe 7 is fixedly connected between the air inlet of the air pump 5 and the suction pipe 1. A carrier column 8 is provided at the bottom of the air pump 5. A plug 9 is fixed at the bottom end of the carrier column 8. A carrier block 10 is fixed inside the suction pipe 1. A spring 11 is fixed on the upper surface of the carrier block 10. The top end of the spring 11 is fixed to a piston 12. The piston 12 is slidably matched with the inner wall of the suction pipe 1, and a socket 13 is fixed at the top of the piston 12. After the plug 9 and the socket 13 are connected, it is used for the energized operation of the air pump 5. An energized delay relay and a de-energized delay relay are provided in the circuit connected by the air pump 5, the plug 9, and the socket 13. The energized delay relay causes the air pump 5 to start running after the plug 9 and the socket 13 are in contact for a period of time, preventing the air pump 5 from being frequently started due to their short-term contact. The de-energized delay relay causes the air pump 5 to continue running for a period of time after the plug 9 and the socket 13 are separated, so as to ensure that the plug 9 and the socket 13 are completely separated and maintain a certain distance. This can provide a buffer space for the pressure increase of the suction filter pipe 15 and avoid the frequent start of the air pump 5;

[0023] Use a wrench to turn the bolt 3, so that the bolt 3 pulls the air pump 5 and the plug 9 moves downward. After the plug 9 is connected to the socket 13, the air pump 5 remains powered on and can pump the air in the suction filtration assembly outwards. The plug 9 under the traction of the bolt 3 can squeeze the socket 13 downward, forcing the spring 11 to be in a compressed state. In this way, according to the compression amount of the spring 11, the negative pressure in the suction filtration assembly can be adjusted. Until the negative pressure in the suction filtration assembly is low enough to force the piston 12 to pull the socket 13 to separate from the plug 9. As the use time of the suction filtration assembly increases, the internal air pressure rises, and the spring 11 can push the socket 13 upward, forcing the plug 9 to be connected to the socket 13 again, thereby autonomously controlling the operation of the air pump 5 and timely discharging the air in the suction filtration assembly, so that the negative pressure in the suction filtration assembly is maintained within a suitable range.

[0024] Wherein, a limiting rod 14 is fixed to the bottom of the piston 12. A through hole for the limiting rod 14 to slide is provided on the carrier block 10. The spring 11 is sleeved outside the limiting rod 14. When the bottom end of the limiting rod 14 touches the inner wall of the air extraction pipe 1, the piston 12 can be prevented from continuing to move downward, preventing the spring 11 from deforming excessively.

[0025] Wherein, the suction filtration assembly includes a suction filtration pipe 15. The air extraction pipe 1 is communicated with the suction filtration pipe 15. The collection assembly is arranged at the bottom end of the suction filtration pipe 15. The top end of the suction filtration pipe 15 is fixedly communicated with a diversion hopper 16. The top of the diversion hopper 16 is fixedly communicated with a filter cylinder 17. The top of the filter cylinder 17 is fixedly communicated with a feed hopper 18. A plurality of carrier rings 19 arranged linearly in the longitudinal direction are fixed inside the filter cylinder 17. A suction filter screen 20 is fixed on the upper surface of the carrier ring 19. A fixing plate 21 is fixed to the top of the filter cylinder 17. A driving motor 22 is arranged on the fixing plate 21. A transmission rod 23 is fixed to the output shaft end of the driving motor 22. A plurality of stirring rods 24 are fixed on the transmission rod 23. The plurality of stirring rods 24 are arranged linearly in the longitudinal direction, and the plurality of stirring rods 24 are arranged at intervals with the plurality of suction filter screens 20. A sleeve 25 is fixedly penetrated on the suction filter screen 20. The sleeve 25 is sleeved outside the transmission rod 23, and a sealing ring is arranged at the joint of the sleeve 25 and the transmission rod 23;

[0026] Use a plurality of suction filter screens 20 arranged linearly in the longitudinal direction to filter the mobile phase in sequence, effectively removing impurities in the mobile phase, making the suction filtration effect of the mobile phase better. The transmission rod 23 driven by the driving motor 22 drives the plurality of stirring rods 24 to rotate, and can stir the mobile phase on each level of the suction filter screen 20, so that the impurities in the mobile phase can float along with it, which is more conducive to the suction filtration operation of the mobile phase.

[0027] Wherein, the collection assembly includes a reagent bottle 26. The reagent bottle 26 is threadedly connected to the suction filtration pipe 15. A support plate 27 is fixedly sleeved outside the reagent bottle 26. A rubber sheet 28 is fixed on the upper surface of the support plate 27. The bottom end of the suction filtration pipe 15 is in close contact with the rubber sheet 28;

[0028] The reagent bottle 26 is fixed to the bottom of the suction filtration tube 15 in a threaded connection manner, so that the mobile phase filtered out in the suction filtration tube 15 can be collected inside the reagent bottle 26. The bottom end of the suction filtration tube 15 is closely attached to the rubber sheet 28, which can enhance the tightness of the connection between the suction filtration tube 15 and the reagent bottle 26, enabling the suction filtration tube 15 to better maintain its own negative pressure state.

[0029] Working principle of the present utility model:

[0030] During use, take out the reagent bottle 26 and screw it into the inside of the bottom end of the suction filtration tube 15 until the suction filtration tube 15 is closely attached to the rubber sheet 28. Put the mobile phase mixed with impurities into the inside of the filter cylinder 17 along the feed hopper 18. Start the drive motor 22 to drive the transmission rod 23 to rotate, forcing the transmission rod 23 to drive a plurality of stirring rods 24 to rotate. The plurality of stirring rods 24 can stir the mobile phase on each layer of the filter screen 20, so that the impurities in the mobile phase are not easily precipitated, and can be better filtered through the filter screen 20. The filtered mobile phase can enter the inside of the reagent bottle 26;

[0031] In order to improve the filtration efficiency of the mobile phase, a wrench can be used to turn the bolt 3 to move the air pump 5 downward by a certain distance, so that the air pump 5 drives the plug 9 to move downward by a certain distance. During the downward movement of the plug 9, it will be connected to the socket 13 and drive the socket 13 to move downward accordingly, forcing the spring 11 to be compressed by a certain length. After the plug 9 is connected to the socket 13, the air pump 5 is powered on, and the air in the suction filtration tube 15 can be pumped outwards until the air pressure inside the suction filtration tube 15 decreases to a level that can pull the piston 12 to compress the spring 11 again, forcing the plug 9 to separate from the socket 13. After the air pump 5 operates for a period of time, it stops pumping the air in the suction filtration tube 15. At this time, the suction filtration tube 15 is in a negative pressure state, which can help the mobile phase complete the suction filtration operation faster. When the air pressure inside the suction filtration tube 15 increases and the spring 11 pushes the socket 13 to connect with the plug 9, the air pump 5 runs again, and the air in the suction filtration tube 15 can continue to be pumped out, so that the air pressure inside the suction filtration tube 15 decreases, in order to achieve the purpose of autonomously controlling the start of the air pump 5, so that the air pressure inside the suction filtration tube 15 is maintained within a suitable range. According to the suction filtration requirements, the compression amount of the spring 11 can also be adjusted by means of the bolt 3, so that the negative pressure value inside the suction filtration tube 15 can be adjusted as needed, and the suction filtration operation of the mobile phase can be completed faster and better.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A suction filtration device for detecting food additives, comprising a suction pipe (1), characterized in that: The bottom end of the suction pipe (1) is provided with a suction filter assembly, and the bottom of the suction filter assembly is provided with a collection assembly, the suction filter assembly is used for filtering the mobile phase, and the collection assembly is used for collecting the mobile phase after filtering. The outside of the suction pipe (1) is fixedly sleeved with a carrier plate (2), the carrier plate (2) is threadedly connected with a bolt (3), the top of the bolt (3) is rotatably connected with a fixed block (4) through a bearing, the fixed block (4) is provided with an air pump (5), the bottom of the air pump (5) is provided with a guide rod (6), the carrier plate (2) is provided with a slide groove for the guide rod (6) to slide, and the air pump ( An air delivery pipe (7) is fixedly connected between the air inlet of the air pump (5) and the air extraction pipe (1), a supporting column (8) is arranged at the bottom of the air pump (5), a plug (9) is fixed at the bottom end of the supporting column (8), a supporting block (10) is fixed inside the air extraction pipe (1), a spring (11) is fixed on the upper surface of the supporting block (10), a piston (12) is fixed on the top end of the spring (11), the piston (12) is slidably matched with the inner wall of the air extraction pipe (1), and a socket (13) is fixed on the top of the piston (12), and the plug (9) is used to energize the air pump (5) after being connected to the socket (13).

2. A food additive detection filtration device according to claim 1, characterized in that: A limiting rod (14) is fixed to the bottom of the piston (12), a through hole for the limiting rod (14) to slide is provided on the carrier block (10), and the spring (11) is sleeved on the outside of the limiting rod (14).

3. A food additive detection filtration device according to claim 1, characterized in that: The suction filtration assembly comprises a suction filtration tube (15), the suction pipe (1) and the suction filtration tube (15) are connected to each other, the collecting assembly is arranged at the bottom end of the suction filtration tube (15), the top end of the suction filtration tube (15) is fixedly connected to a flow guide hopper (16), the top of the flow guide hopper (16) is fixedly connected to a filter cartridge (17), the top of the filter cartridge (17) is fixedly connected to a feed hopper (18), a plurality of carrier rings (19) arranged linearly in the longitudinal direction are fixedly provided inside the filter cartridge (17), and a suction filtration net (20) is fixedly provided on the upper surface of the carrier ring (19).

4. A food additive detection filtration device according to claim 3, characterized in that: A fixing plate (21) is fixed to the top of the filter cylinder (17), a driving motor (22) is arranged on the fixing plate (21), a transmission rod (23) is fixed to the output shaft end of the driving motor (22), a plurality of groups of stirring rods (24) are fixed to the transmission rod (23), the plurality of groups of stirring rods (24) are linearly arranged in the longitudinal direction, and the plurality of groups of stirring rods (24) are spaced apart from the plurality of suction filter screens (20).

5. A food additive detection filtration device according to claim 4, characterized in that: A sleeve (25) is fixedly passed through the suction filter screen (20), the sleeve (25) is sleeved on the outside of the transmission rod (23), and a sealing ring is provided at the junction of the sleeve (25) and the transmission rod (23).

6. A food additive detection filtration device according to claim 3, characterized in that: The collecting assembly comprises a reagent bottle (26), the reagent bottle (26) being threadedly connected to the suction filter tube (15), a support plate (27) being fixedly sleeved on the outside of the reagent bottle (26), a rubber sheet (28) being fixed on the upper surface of the support plate (27), and the bottom end of the suction filter tube (15) being tightly fitted to the rubber sheet (28).

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