CN110787510A - Filter cartridge for ensuring food safety - Google Patents
Filter cartridge for ensuring food safety Download PDFInfo
- Publication number
- CN110787510A CN110787510A CN201910932134.XA CN201910932134A CN110787510A CN 110787510 A CN110787510 A CN 110787510A CN 201910932134 A CN201910932134 A CN 201910932134A CN 110787510 A CN110787510 A CN 110787510A
- Authority
- CN
- China
- Prior art keywords
- food safety
- conductive
- end cover
- pin
- filter cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000003292 glue Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000011810 insulating material Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000002923 metal particle Substances 0.000 claims description 2
- 230000036541 health Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 16
- 230000001070 adhesive effect Effects 0.000 description 16
- 239000000843 powder Substances 0.000 description 12
- 239000012530 fluid Substances 0.000 description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012811 non-conductive material Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/35—Self-supporting filtering elements arranged for outward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a filter cartridge for ensuring food safety, which comprises a continuous pleated cylindrical filter element arranged between an upper end cover and a lower end cover, wherein the inner periphery of the filter element is provided with an inner framework, one side surfaces of the upper end cover and the lower end cover facing the filter element are provided with grooves, glue is arranged in the grooves, the side edges of two ends of the filter element are respectively connected into the grooves of the upper end cover and the lower end cover, a layer of sealing structure is attached above the glue, and the sealing structure is a sealing gasket or a sealing coating. The filter cylinder for ensuring food safety has the advantages of simple structure, convenience and quickness in use, capability of preventing glue from directly contacting with food, eliminating the hidden health trouble of the glue to human bodies, and capability of detecting whether the glue leaks and timely sending out an alarm signal.
Description
Technical Field
The invention relates to the technical field of filter cartridges, in particular to a filter cartridge capable of ensuring food safety.
Background
With the development of social economy and the improvement of the living standard of people, people pay more attention to health and food safety, and the food safety becomes an important factor related to national health and social stability. In the prior art, a filter element for food is connected with an end cover by glue, food residue juice is usually weakly acidic or weakly alkaline, the glue is easy to age and decompose after being soaked in the environment for a long time, and decomposed micromolecular organic matters influence food.
In order to ensure the safety of food and prevent the micromolecular organic matters decomposed by glue from leaking into the food, the structure of the filter cylinder needs to be further improved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the filter cylinder which has a simple structure, is convenient to use, can prevent glue from directly contacting with food and can find the leakage of the glue in time to ensure the food safety.
In order to achieve the purpose, the technical scheme of the invention is to design a filter cartridge capable of ensuring food safety, which comprises a continuous pleated cylindrical filter element arranged between an upper end cover and a lower end cover, wherein an inner framework is arranged on the inner periphery of the filter element, grooves are arranged on one side faces, facing the filter element, of the upper end cover and the lower end cover, glue is arranged in the grooves, the side edges of two ends of the filter element are respectively connected into the grooves of the upper end cover and the lower end cover, a sealing structure is attached above the glue, and the sealing structure is a sealing gasket or a sealing coating.
When the filtered food is fluid, in order to facilitate the detection of the leakage of glue, the further optimized scheme is that the upper end cover and the lower end cover are made of insulating materials, the glue is conductive glue doped with conductive metal particles, one end of the first conductive pin is embedded into the conductive glue in the groove of the lower end cover, and the other end of the first conductive pin is led out of the lower end cover; attaching one end of a second conductive pin to the surface of the sealing structure, and leading the other end of the second conductive pin out of the lower end cover; an alarm device is connected between the two conductive pins in series.
When the sealing structure is damaged or cracked, the conductive adhesive is exposed at the damaged or cracked part and is in direct contact with the food fluid. Since the food fluid is a conductor, a conductive loop is formed among the first pin, the conductive adhesive, the fluid, the second pin and the alarm. Therefore, when any part of the sealing gasket or the sealing coating is damaged to cause the leakage of the conductive adhesive, the leakage can be found in time through the alarm, and an alarm signal is sent out. Before the sealing structure is damaged or cracked, the conductive adhesive, the food fluid and the second pin of the filter cylinder are insulated by the sealing structure, and a conductive loop cannot be formed.
When the filtered food is powder, in order to detect whether glue leaks, a layer of stainless steel film or aluminum film is attached to the middle position of the inner wall of the inner framework, the stainless steel film or the aluminum film is connected with a third conductive pin, the third conductive pin is connected with the negative electrode of the high-voltage electrostatic generator, and the positive electrode of the high-voltage electrostatic generator is connected with the first conductive pin.
When the sealing structure is damaged or cracked, the conductive adhesive is exposed at the damaged or cracked part and directly contacts with food, and because the solid powder is non-conductive material, under the high pressure generated by the high-voltage electrostatic generator, the corona discharge generates dense charges near the food powder, the powder forms charged particles, and the charged particles are attracted to the conductive adhesive with the polarity opposite to that of the charged particles under the action of electrostatic force, so that a conductive loop is formed among the powder, the conductive adhesive, the first conductive pin, the second conductive pin and the alarm. Therefore, when any part of the sealing gasket or the sealing coating is damaged to cause the leakage of the conductive adhesive, the leakage can be found in time through the alarm, and an alarm signal is sent out. Before the sealing structure is damaged or cracked, the conductive adhesive, the powder and the second conductive pin of the filter cylinder are insulated by the sealing structure, and a conductive loop cannot be formed.
In order to ensure that even a small leakage point can be detected when the flow rate of the food fluid is small, a more preferable technical scheme is that a metal mesh is attached to the surface of the sealing gasket or the sealing coating and connected with the second pin, and the spacing distance between meshes of the metal mesh is as follows: 1-2 mm.
In order to ensure the isolation effect on glue and the food safety, the further preferable technical scheme is that the material of the sealing coating is polytetrafluoroethylene.
In a further preferred embodiment, the sealing gasket is made of silica gel.
In a further preferred technical scheme, the outer layer of the sealing gasket is made of polytetrafluoroethylene, and the inner layer of the sealing gasket is made of soft plastic or rubber.
Further, according to a preferred technical scheme, the first pin and the second pin are made of stainless steel.
In order to prevent the first pin or the second pin from being damaged or contaminated to cause detection errors, it is preferable that an insulating sheath is disposed on an outer layer of the first pin or the second pin exposed outside the lower end cap.
Further preferably, the insulating material used by the upper end cover and the lower end cover is at least one of polypropylene, polyethylene, polycarbonate and polyethylene terephthalate.
The invention has the advantages and beneficial effects that: the filter cylinder for ensuring food safety has the characteristics of simple structure, convenience and quickness in use, capability of preventing glue from directly contacting with food fluid, preventing food from being polluted by the glue, timely finding whether the glue leaks, sending an alarm signal and the like.
Drawings
FIG. 1 is a schematic perspective view of a food safety cartridge according to the present invention;
FIG. 2 is a schematic end elevational view of a continuous pleated tubular filter insert of the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention cartridge in connection with a lower end cap for fluid filtration;
fig. 4 is a schematic sectional view of the cylindrical filter cartridge for powder filtration of the present invention in connection with a lower end cap.
In the figure: 1. an upper end cover; 2. a lower end cover; 3. a filter element; 4. an inner skeleton; 5. conductive silver paste; 6. a seal coat; 7. a metal mesh; 8. a first conductive pin; 9. a second conductive pin; 10. an alarm device; 11. aluminum film; 12. a third conductive pin; 13. a high voltage electrostatic generator.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example one
As shown in fig. 1 to 3, the present invention is a filter cartridge for ensuring food safety, comprising a continuous pleated cylindrical filter element 3 disposed between an upper end cover 1 and a lower end cover 2, an inner frame 4 is disposed on the inner periphery of the filter element 3, a groove is disposed on one side of the upper end cover 1 and the lower end cover 2 facing the filter element 3, glue is disposed in the groove, the glue is conductive silver glue 5, the side edges of both ends of the filter element 3 are respectively connected to the grooves of the upper end cover 1 and the lower end cover 2, and a layer of seal coating 6 is attached on the upper side of the conductive silver glue 5.
The upper end cover 1 and the lower end cover 2 are made of insulating materials, one end of a first conductive pin 8 is embedded into the conductive silver adhesive 5 in the groove of the lower end cover 2, and the other end of the first conductive pin is led out of the lower end cover 2; a metal mesh 7 is attached to the outside of the sealing coating 6 and is connected with one end of a second conductive pin 9, and the other end of the second conductive pin is led out of the lower end cover 2; the distance between the grids of the metal mesh 7 is 1mm, and the alarm device 10 is connected in series between the two conductive pins.
When the seal coat 6 is broken or cracked, the conductive silver paste 5 is contacted with the food fluid from the broken or cracked portion. Since the food fluid is a conductor, a conductive loop is formed among the first pin 9, the conductive silver paste 5, the food fluid, the second conductive pin 9 and the alarm device 10. Therefore, when any part of the sealing coating 6 is damaged to cause the leakage of the conductive adhesive, the leakage can be timely found through the alarm 10 and an alarm signal is sent out.
Example two
As shown in fig. 4, on the basis of the first embodiment, a layer of aluminum film 11 is attached to the middle position of the inner wall of the inner frame 4, the aluminum film 11 is connected to a third conductive pin 12, the third conductive pin 12 is connected to the negative electrode of a high-voltage electrostatic generator 13, and the positive electrode of the high-voltage electrostatic generator 13 is connected to the first conductive pin 8.
When the sealing structure is damaged or cracked, the conductive adhesive is exposed at the damaged or cracked part and directly contacts with food, and because the solid powder is non-conductive material, under the high pressure generated by the high-voltage electrostatic generator, because of corona discharge, dense charges are generated nearby the solid powder, the powder forms charged particles, and the charged particles are attracted to the conductive adhesive with the opposite polarity to the polarity of the charged particles under the action of electrostatic force, so that a conductive loop is formed among the powder, the first conductive pin, the conductive adhesive, the second conductive pin and the alarm. Therefore, when any part of the sealing gasket or the sealing coating is damaged to cause the leakage of the conductive adhesive, the leakage can be found in time through the alarm, and an alarm signal is sent out. Before the sealing structure is damaged or cracked, the conductive adhesive, the powder and the second conductive pin of the filter cylinder are insulated by the sealing structure, and a conductive loop cannot be formed.
In a further preferred embodiment of the present invention, the material of the seal coating is polytetrafluoroethylene.
In a further preferred embodiment of the present invention, the sealing gasket is made of silica gel.
In a further preferred embodiment of the present invention, the outer layer of the sealing gasket is made of polytetrafluoroethylene, and the inner layer of the sealing gasket is made of soft plastic or rubber.
In a further preferred embodiment of the present invention, the first lead and the second lead are made of stainless steel.
In a further preferred embodiment of the invention, the outer layer of the first or second pin exposed outside the lower end cap is provided with an insulating sheath.
In a further preferred embodiment of the present invention, the insulating material used for the upper end cap and the lower end cap is at least one of polypropylene, polyethylene, polycarbonate and polyethylene terephthalate.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A filter cartridge for ensuring food safety comprises a continuous pleated cylindrical filter element arranged between an upper end cover and a lower end cover, wherein an inner framework is arranged on the inner periphery of the filter element.
2. The filter cartridge for ensuring food safety as claimed in claim 1, wherein the upper end cap and the lower end cap are made of insulating material, the glue is conductive glue doped with conductive metal particles, one end of the first conductive pin is embedded in the conductive glue in the groove of the lower end cap, and the other end of the first conductive pin is led out of the lower end cap; attaching one end of a second conductive pin to the surface of the sealing gasket or the sealing coating, and leading the other end of the second conductive pin out of the lower end cover; an alarm device is connected between the two conductive pins in series.
3. The filter cartridge for ensuring food safety as claimed in claim 2, wherein a stainless steel film or an aluminum film is attached to the middle position of the inner wall of the inner frame, the stainless steel film or the aluminum film is connected with a third conductive pin, the third conductive pin is connected with the negative electrode of the high voltage electrostatic generator, and the positive electrode of the high voltage electrostatic generator is connected with the first conductive pin.
4. The food safety cartridge according to claim 3, wherein a metal mesh is attached to the surface of the sealing structure and connected to the second pin, and the meshes of the metal mesh are spaced apart by a distance of: 1-2 mm.
5. The food safety-assured filter cartridge of claim 1, wherein the seal coat is polytetrafluoroethylene.
6. The filter cartridge of claim 1, wherein the gasket is made of silica gel.
7. The food safety-assured filter cartridge of claim 1, wherein the gasket has an outer layer of ptfe and an inner layer of soft plastic or rubber.
8. The food safety cartridge according to claim 2, wherein the first and second legs are made of stainless steel.
9. The food safety-assured filter cartridge of claim 2, wherein the outer layer of the first pin or the second pin exposed to the outside of the lower end cap is provided with an insulating sheath.
10. The food safety-assured filter cartridge of claim 2, wherein the insulating material used for the upper and lower end caps is at least one of polypropylene, polyethylene, polycarbonate, and polyethylene terephthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932134.XA CN110787510B (en) | 2019-09-29 | 2019-09-29 | Filter cartridge for ensuring food safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910932134.XA CN110787510B (en) | 2019-09-29 | 2019-09-29 | Filter cartridge for ensuring food safety |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110787510A true CN110787510A (en) | 2020-02-14 |
| CN110787510B CN110787510B (en) | 2021-11-23 |
Family
ID=69438760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910932134.XA Active CN110787510B (en) | 2019-09-29 | 2019-09-29 | Filter cartridge for ensuring food safety |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110787510B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10027576A1 (en) * | 2000-06-02 | 2001-12-06 | Abb Research Ltd | Method and device for monitoring a sealing element, avoids mass transfer between two areas of a component with one such area containing a gaseous, powdery or liquid substance |
| WO2010062890A1 (en) * | 2008-11-26 | 2010-06-03 | Odyssian Technology Llc | Gaskets and seals with integrated leak detection capability |
| CN208665906U (en) * | 2018-07-30 | 2019-03-29 | 深圳市雷军科技有限公司 | A kind of food pack |
| CN208943581U (en) * | 2018-09-30 | 2019-06-07 | 扬州西联净化科技有限公司 | A kind of food processing pre-cleaning filter bag |
| CN209188241U (en) * | 2018-12-05 | 2019-08-02 | 泰兴市佳林石化机械制造有限公司 | A kind of pleat folding oily filter core |
-
2019
- 2019-09-29 CN CN201910932134.XA patent/CN110787510B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10027576A1 (en) * | 2000-06-02 | 2001-12-06 | Abb Research Ltd | Method and device for monitoring a sealing element, avoids mass transfer between two areas of a component with one such area containing a gaseous, powdery or liquid substance |
| WO2010062890A1 (en) * | 2008-11-26 | 2010-06-03 | Odyssian Technology Llc | Gaskets and seals with integrated leak detection capability |
| CN208665906U (en) * | 2018-07-30 | 2019-03-29 | 深圳市雷军科技有限公司 | A kind of food pack |
| CN208943581U (en) * | 2018-09-30 | 2019-06-07 | 扬州西联净化科技有限公司 | A kind of food processing pre-cleaning filter bag |
| CN209188241U (en) * | 2018-12-05 | 2019-08-02 | 泰兴市佳林石化机械制造有限公司 | A kind of pleat folding oily filter core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110787510B (en) | 2021-11-23 |
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