CN110398573B - Device for facilitating inspection personnel to use food irradiation detection equipment - Google Patents
Device for facilitating inspection personnel to use food irradiation detection equipment Download PDFInfo
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- CN110398573B CN110398573B CN201910657954.2A CN201910657954A CN110398573B CN 110398573 B CN110398573 B CN 110398573B CN 201910657954 A CN201910657954 A CN 201910657954A CN 110398573 B CN110398573 B CN 110398573B
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/26—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by irradiation without heating
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/20—Removal of unwanted matter, e.g. deodorisation or detoxification
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/30—Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
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Abstract
A device convenient for inspectors to use food irradiation detection equipment comprises a voltage-stabilized power supply, a motor speed reducing mechanism, a micro power switch, a timing circuit, a tray, a supporting seat, a supporting plate, an upper barrel and a lower barrel; the lower end of the supporting plate is arranged on the rear side of the supporting seat, and the irradiation device body is arranged in the upper barrel; the upper barrel is arranged on the front side of the supporting plate, the lower end of the lower barrel is arranged on the supporting seat, the motor speed reducing mechanism is arranged in the lower barrel, and the lower end of the circular tray is arranged on a power output shaft of the motor speed reducing mechanism; the stabilized voltage power supply, the timing circuit and the knob connected with the circuit board inside the irradiation device body are arranged on the circuit board in the element box and connected with the motor speed reducing mechanism through a lead. When the invention is used, an operator does not need to do any operation, and can automatically complete all detection processes, thereby reducing operation procedures and bringing convenience to inspection personnel. Based on the above, the invention has good application prospect.
Description
Technical Field
The invention relates to the field of detection equipment, in particular to a device for facilitating inspection personnel to use food irradiation detection equipment.
Background
The irradiation food refers to food preserved by irradiationFood productThe method can kill insects, eggs, larvae, bacteria and microorganisms in food in the irradiation process, eliminate food-borne diseases harmful to human health and ensure food to be safer; the shelf life of the food is prolonged, the irradiated food can keep the original taste for a long time and can keep the original taste, so the irradiation-free food has wide application in the food industry and the like.
The existing equipment for irradiating food generally comprises an irradiation equipment body and a production line conveying belt equipment body; during operation, food is constantly carried into this internal lower part of irradiation equipment through assembly line conveyer belt equipment body (for example drum-type conveyer, belt conveyor etc.) and is irradiated and process, and the irradiation food gets into the packing station from assembly line conveyer belt equipment body end again after the processing, and then reaches whole production flow. In the field of food processing, the irradiation value of a proper dose is provided to irradiate food, which is the basis for ensuring the effective irradiation processing of the food; the problem that the quality guarantee period of subsequent products is shortened and the like can be caused because the irradiation effect cannot be well achieved due to the excessively low dose of irradiation value, and certain influence can be brought to the food safety due to the excessively high dose of irradiation value. Therefore, the existing large-scale food factory or related inspection departments are generally equipped with irradiation detection equipment for testing the optimal theoretical irradiation value of each food, in application, different foods are placed in the detection equipment under the safe dose, the storage periods of the foods after different irradiation values are tested, and further, on the premise of effectively ensuring the storage quality, taste and the like of the foods, the lowest irradiation specific value is obtained to provide theoretical data support for the subsequent actual production.
The existing food irradiation detection equipment basically comprises a box body and an irradiation device body arranged on the upper portion in the box body, when detection is carried out, inspectors manually open a box door, then put in a sample, manually close the box door, open a power supply of the irradiation device body and a knob for operating the irradiation device body, select required irradiation dose and then carry out irradiation test on the food sample, and after irradiation is finished, manually open the box door to complete all detection. Because the box door needs to be ensured to be sealed as much as possible in irradiation detection, the conventional irradiation detection device is provided with a manual locking device at the front end of the box door, an operating panel of the locking device is manually rotated after the box door is closed, then the operating panel moves backwards along a locking screw rod, the box door is pushed to move backwards, the space between the box door and the front end of the box body is sealed, and the box door is reversely operated according to the process during opening the door, so that the box door is opened. The whole process needs manual operation, and the process is complicated, so that inconvenience is brought to detection personnel.
Disclosure of Invention
In order to overcome the defects that the existing food irradiation detection equipment is limited by the structure, the process is complicated in actual operation and the inconvenience is brought to the inspection work of inspectors, the invention provides a device which can automatically complete the work flows of closing, irradiating the detection sample, opening and the like without any operation after the inspection sample is placed on a tray and a power switch is turned on in the inspection, thereby reducing the operation procedures and bringing convenience to the inspectors.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a device convenient for inspectors to use food irradiation detection equipment comprises a voltage-stabilized power supply, a motor speed reducing mechanism and a micro power switch, and is characterized by also comprising a timing circuit, a tray, a supporting seat, a supporting plate, an upper barrel and a lower barrel; the lower end of the supporting plate is fixedly arranged at the upper end of the rear side of the supporting seat, and the upper end of the shell of the irradiation device body is fixedly arranged at the upper end in the upper barrel; the rear end of the upper barrel is fixedly arranged at the upper middle part of the front side of the supporting plate, the lower end of the lower barrel is fixedly arranged at the upper middle part of the supporting seat, the shell of the motor speed reducing mechanism is fixedly arranged at the lower middle part in the lower barrel, and the middle part of the lower end of the circular tray is fixedly arranged at the upper end of a power output shaft of the motor speed reducing mechanism; the stabilized voltage supply, the timing circuit and the knob connected with the circuit board inside the irradiation device body are arranged on the circuit board in the element box, the element box is fixedly arranged in the middle of the upper end of the outer side of the upper barrel, and the shells of the two micro-motion power switches are respectively and fixedly arranged at the front end and the rear end of the lower part of the outer side of the upper barrel; the power input end of the voltage-stabilizing power supply and the two poles of the 220V alternating current power supply are respectively connected through leads, the two power output ends of the voltage-stabilizing circuit and the two power input ends of the timing circuit are respectively connected through leads, the two alternating current control power supply output ends of the timing circuit and the two power input ends of the irradiation device body are respectively connected through leads, the first direct current control power supply output end of the timing circuit and the positive and negative pole power supply input ends of the motor speed reducing mechanism M are respectively connected through leads, the second direct current control power supply output end of the timing circuit and the negative and positive pole power supply input ends of the motor speed reducing mechanism are respectively connected through leads, and the two micro-motion power switches are connected in series between the first positive direct current control power supply output end of the timing circuit and the positive pole power supply input end of the motor speed reducing mechanism.
Furthermore, the upper end of the upper cylinder body is of a closed structure, the lower end of the upper cylinder body is of an open structure, and the upper part of the lower cylinder body is of an open structure.
Furthermore, the outer diameter of the tray is larger than that of the lower end of the upper barrel, an annular groove is formed in the middle of the upper portion of the tray and serves as a detection sample placing station, an annular sealing rubber strip is arranged at the side end of the upper portion of the tray, after the upper end of the tray is tightly contacted with the lower portion of the upper barrel, the upper end of the tray props against action keys of the two micro power switches, and moving contacts and static contacts in the two micro power switches are opened.
Further, motor reduction gears is direct current motor gear reducer, motor reduction gears's power output shaft has the external screw thread from top to bottom, motor reduction gears's power output shaft matches to have an inside sleeve pipe that has the internal thread from top to bottom, sheathed tube internal thread screw in power output shaft external screw thread from top to bottom, the lower extreme middle part fixed mounting of circular tray is in sheathed tube upper end, each fixed mounting in both ends has the spacing collar about the sheathed tube middle part outside, motor reduction gears's casing upper end middle part each side from top to bottom fixed mounting has the guide bar, the guide bar is located the spacing collar.
Further, the stabilized voltage power supply is an alternating current 220V-to-direct current switching power supply module.
Further, the micro power switch is a self-resetting normally-closed contact type micro power switch.
Furthermore, the timing circuit comprises two sets of microcomputer time control switches and relays, the two sets of microcomputer time control switches and the relays are connected through circuit board wiring, two ends 1 and 2 of a power input of the first set of microcomputer time control switches are respectively connected with two control power input ends of the first relay, two ends of normally closed contacts of the first relay are respectively connected with two ends 1 and 2 of the power input of the second set of microcomputer time control switches, and two ends of the power input of the third relay through leads, two ends 3 and 4 of a power output of the first set of microcomputer time control switches are respectively connected with two power input ends of the first relay, and two ends 3 and 4 of the power output of the second set of microcomputer time control switches are respectively connected with two power input ends of the second relay.
Furthermore, the timing circuit is also matched with a silicon controlled rectifier, a resistor and a fourth relay, the silicon controlled rectifier, the resistor and the fourth relay are connected through a circuit board in a wiring mode, the cathode of the silicon controlled rectifier is connected with the anode power supply input end of the relay, one end of the resistor is connected with the control electrode of the silicon controlled rectifier, the other end of the resistor is connected with the 3 pins of the anode power supply output end of the second set of microcomputer time control switch, the anode of the silicon controlled rectifier is connected with the 3 pins of the anode power supply output end of the voltage stabilizing circuit, the cathode power supply input end of the relay is connected with the 4 pins of the cathode power supply output end of the voltage stabilizing circuit, and one alternating current power supply input end of the irradiation device body is connected between the control power supply input end of the fourth relay and the normally closed contact end in series.
The invention has the beneficial effects that: when the food sample tray is used and needs to be checked, the food sample is directly placed in the annular groove at the upper end of the middle part of the tray, and an operator does not need to do any operation after turning on a power switch; the first set of microcomputer time control switch can control the motor reducing mechanism to work to drive the tray to move upwards, and when the uppermost end of the tray is contacted with the lower part of the upper barrel, the tray automatically stops moving; then the power of the irradiation device body is automatically switched on to irradiate the test sample, and the tester can set the time in advance through a microcomputer time control switch. After the irradiation of the inspection sample is finished, the microcomputer time control switch can automatically turn off the power supply of the irradiation device body, and then the motor speed reducing mechanism is controlled to work to drive the tray to move downwards for a certain distance to stop, so that an inspector can take out the inspected food sample. The invention reduces the operation flow and brings convenience to the inspection personnel. Based on the above, the invention has good application prospect.
Drawings
The invention is further illustrated below with reference to the figures and examples.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural diagram between a limiting ring and a guide rod in the invention.
Fig. 3 is a circuit diagram of the present invention.
Detailed Description
As shown in figure 1, the device for facilitating the use of food irradiation detection equipment by inspectors comprises a voltage-stabilized power supply 1, a motor reducing mechanism 2, a micro power switch 3, a timing circuit 4, a tray 5, a supporting seat 6, a supporting plate 7, an upper barrel 8 and a lower barrel 9; the lower end of the rectangular supporting plate 7 is vertically welded at the upper end of the rear side of the rectangular supporting seat 6, and the upper end of the shell of the irradiation device body 10 is installed at the upper end in the upper barrel 8 through a screw nut; the rear end of the upper cylinder 8 is welded at the upper middle part of the front side of the supporting plate 7, the lower end of the lower cylinder 9 is welded at the upper middle part of the supporting seat 6 and is positioned on a vertical plane with the lower end of the upper cylinder 8, the lower end of the shell of the motor speed reducing mechanism 2 is arranged at the lower middle part in the lower cylinder 9 through a screw nut, and the middle part of the lower end of the circular tray 5 is welded at the upper end of a power output shaft 21 of the motor speed reducing mechanism; the stabilized voltage power supply 1, the timing circuit 4 and a knob connected with an internal circuit board of the irradiation device body 10 are arranged on an internal circuit board of the element box 11, the lower part of the element box 11 is arranged in the middle of the upper end of the outer side of the upper barrel 8 through a screw and a nut, the rear sides of the shells of the two micro power switches 3 are respectively arranged at the front end and the rear end of the lower part of the outer side of the upper barrel 8 in a gluing or screw fixing mode, and the action keys of the two micro power switches 3 are positioned at the lower side.
As shown in fig. 1 and 2, the upper end of the circular upper cylinder 8 is of a closed structure, the lower end is of an open structure, and the upper part of the circular lower cylinder 9 is of an open structure. The outer diameter of the tray 5 is larger than the outer diameter of the lower end of the upper barrel 8, an annular groove 51 is arranged in the upper middle of the tray 5 and serves as a detection sample placing station, an annular sealing rubber strip 52 is arranged at the side end of the upper portion of the tray 5, the action keys of the two micro-power switches 3 are located at a position close to the lower point outside the lower end of the upper barrel, after the upper end of the tray 5 is just tightly connected with the lower portion of the upper barrel 8, the upper end of the tray 5 props against the action keys of the two micro-power switches 3, and the movable contacts and the static contacts in the two micro-power switches 3 are just opened. The motor reducing mechanism 2 is a finished product of a 24V direct current motor gear reducer with the brand ASLONG/Orlon and the model JGB37-545B, the power is 500W, a multi-stage gear reducing mechanism is arranged in the front end of a shell, when the motor reducing mechanism works, the power output by a motor rotating shaft of the motor reducing mechanism is reduced by multi-stage gears to increase the torque and then is output from a power output shaft 21, the rotating speed of the power output shaft 21 is 200 revolutions per minute, the power output shaft 21 of the motor reducing mechanism is provided with external threads from top to bottom, the power output shaft of the motor reducing mechanism is matched and sleeved with a sleeve 22 with internal threads from top to bottom, the external threads of the power output shaft 21 are screwed in from top to bottom through the internal threads of the sleeve 22, the sleeve 22 is arranged at the upper end of the power output shaft 21, the middle part of the lower end of the circular tray 5 is welded at the upper end of the sleeve 22, and a limit ring 23 is respectively welded at the left end and the right end outside the middle part of the sleeve 22, the left side and the right side of the middle part of the upper end of the shell of the motor reducing mechanism are respectively welded with a guide rod 24 from top to bottom, the two guide rods 24 are respectively positioned in two limiting rings 23, and the lengths of the two guide rods 24, the sleeve 22 and the power output shaft 21 are larger than the distance between the tray 5 and the lower end of the upper barrel 8.
As shown in FIG. 3, the motor reducing mechanism M is a 24V DC motor gear reducer product of the brand ASLONG/Orlon, model JGB 37-545B. The stabilized voltage supply A is a finished product of a brand bright weft AC 220V-to-24V DC switching power supply module, and the power is 2 KW. The micro power switches S1 and S2 are self-resetting normally closed contact micro power switches. The timing circuit includes two sets of microcomputer time control switch finished products A1 and A2 and relays K1, K2 and K4 with model KG316T, which are connected by circuit board wiring, the microcomputer time control switches A1 and A2 have power input ends 1 and 2 pins, power output ends 3 and 4 pins, and a liquid crystal display screen, the front and outer lower end of the shell has seven keys including timing, clock key, timing, calibration, week calibration, automatic/manual operation and cancel/recovery Two control power supply input ends of a second relay K2 are respectively connected, two normally closed contact ends of a first relay K1 are respectively connected with two power supply input ends 1 and 2 pins of a second set of microcomputer time control switch A2, two power supply input ends of a third relay K4 are respectively connected through leads, two power supply output ends 3 and 4 pins of a first set of microcomputer time control switch A1 are respectively connected with two power supply input ends of a first relay K1, two power supply output ends 3 and 4 pins of a second set of microcomputer time control switch A2 are respectively connected with two power supply input ends of a second relay K2, and operation keys, display screens and knobs connected with an internal circuit board of an irradiation device body of the two sets of microcomputer time control switches A1 and A2 are respectively positioned outside a plurality of openings and two openings at the upper end of the element box. The timing circuit is also matched with a silicon controlled rectifier VS, a resistor R and a fourth relay K3, the silicon controlled rectifier VS is connected with the positive power supply input end of the relay K3 through circuit board wiring, the negative pole of the silicon controlled rectifier VS is connected with the positive pole power supply input end of the relay VS, one end of the resistor R is connected with the control pole of the silicon controlled rectifier VS, the other end of the resistor R is connected with the 3-pin positive pole power supply output end of the second set of microcomputer time control switch A2, the positive pole of the silicon controlled rectifier VS is connected with the 3-pin positive pole power supply output end of the voltage stabilizing circuit, the negative pole power supply input end of the relay K3 is connected with the 4-pin negative pole power supply output end of the voltage stabilizing circuit A, and one alternating current power supply input end of the irradiation device body F is connected between the control power supply input end of the fourth relay K3 and the normally closed contact end in series.
As shown in fig. 3, the power input terminals 1 and 2 of the regulated power supply a and the two poles of the 220V ac power supply are connected by leads, respectively. Pins 3 and 4 at the two ends of the power output of the voltage stabilizing circuit A and pins 1 and 2 of the microcomputer time control switch A1 at the two ends of the power input of the timing circuit are respectively connected through leads. Two poles of a 220V alternating current power supply are respectively connected with two control power supply input ends of two alternating current control power supply input ends relays K4 of the timing circuit through leads. Two normally open contact ends of two alternating current control power output end relays K4 of the timing circuit and two power input ends of the irradiation device body F are respectively connected through leads. Two normally open contact ends of a first path of direct current control power supply output end relay K1 of the timing circuit are respectively connected with positive and negative pole power supply input ends of the motor speed reducing mechanism M through leads. Two normally open contact ends of a second path of control power supply output end relay K2 of the timing circuit are respectively connected with the negative and positive pole power supply input ends of the motor reducing mechanism M through leads. One end of the first micro power switch S1 is connected with one end of the second micro power switch S2 through a lead. The other end of the second micro power switch S2 is connected with the positive power input end of the motor speed reducing mechanism M through a lead. The other end of the first micro power switch S1 is connected with one normally open contact end of the relay K1 through a lead. One of the alternating current power supply input ends of the irradiation device body F is connected in series between the control power supply input end and the normally closed contact end of the fourth relay K3, one of the alternating current power supply input ends of the irradiation device body F and the normally closed contact end of the relay K3 are connected through a lead, the control power supply input end of the relay K3 and the normally open contact end of the relay K4 are connected through a lead, the control power supply input end of the relay K4 and one pole of the 220V alternating current power supply are connected through a lead, and the other pole of the 220V alternating current power supply and the other alternating current power supply input end of the irradiation device body F are connected through a lead.
As shown in fig. 1, 2 and 3, the user can adjust the irradiation value output by the irradiation device body F in the subsequent operation by adjusting the knob connected with the circuit board inside the irradiation device body F in different directions before use. When the food sample is required to be checked, a user directly puts the food sample in the annular groove 51 at the upper end of the middle part of the tray, and after the operator turns on the power switch K, no operation is required; after the power switch K is turned on, and the 220V alternating current power supply enters the pins 1 and 2 of the voltage stabilizing circuit A, the pins 3 and 4 of the voltage stabilizing circuit A can output stable 24V direct current power supply under the action of the internal circuit of the voltage stabilizing circuit A to enter the two ends of the power supply input end of the timing circuit, and then the timing circuit is in a power-on working state. After the timing circuit is powered on to work, under the action of 3 and 4 feet output power supply time preset by operating a first set of microcomputer time control switch A1 key by an inspector, 3 and 4 feet of the first set of microcomputer time control switch A1 can output 10 seconds of power supply to enter two ends of the power supply input end of the relay K1, so that the relay 1 is powered on to close two control power supply input ends and two normally open contact ends thereof respectively, and two control power supply input ends (normally open with 3 and 4 feet of the voltage stabilizing circuit A) and two normally closed contact ends thereof are respectively opened. Because the two ends of the positive and negative pole power supply input of the motor reducing mechanism M are respectively connected with the two normally open contact ends of the relay K1, the motor reducing mechanism M can work for a period of time. After the motor reducing mechanism M works by electrifying, the power output shaft 21 of the motor reducing mechanism M can rotate clockwise under the action of the motor and the reducing gear in the motor reducing mechanism M, so that the external thread of the power output shaft of the motor reducing mechanism acts on the internal thread of the sleeve 22 at the upper end of the motor reducing mechanism, and the sleeve 22 moves upwards and drives the tray 5 to move upwards and the distance between the lower end of the upper barrel 8 is gradually reduced; in the upward movement of the sleeve 22, the sleeve 22 respectively moves upwards along the two guide rods 24 through the two ferrules 23, and the two guide rods 24 are used for guiding the sleeve 22 and the tray 5 upwards and preventing the sleeve 22 from rotating in the upwards movement and further preventing the sleeve 22 from realizing the upwards movement. When the motor speed reducing mechanism M drives the tray 5 to move upwards through the power output shaft 21, the upper end of the tray 5 is just tightly contacted with the lower part of the upper cylinder 8 (the sealing rubber strip 52 is arranged around the upper end of the tray 5, the tight combination of the tray 5 and the upper end can be effectively ensured, and the required time is about 9 seconds), at the moment, the upper end of the tray 5 props against the action keys of the two micro power switches S1 and S2, and the movable contacts and the static contacts in the two micro power switches S1 and S2 are just opened. Because, first micro-gap switch S1 one end and second micro-gap switch S2 one end are connected, the second micro-gap switch other end and motor reduction mechanism M 'S positive power input end are connected, first micro-gap switch S1 other end and one of them normally open contact end of relay K1 are connected, so as long as after one of them micro-gap switch' S inside contact opens a way, motor reduction mechanism M can all lose the electricity and no longer work, guaranteed that tray 5 goes upward the distance and reaches the needs, and tray 5 upper end and last barrel 8 lower part just in close contact with.
As shown in fig. 1, 2 and 3, when the upper end of the tray 5 is just in close contact with the lower part of the upper cylinder 8 and the 3 and 4 pins of the first set of microcomputer time control switch a1 are output for 10 seconds to stop outputting, because the two ends of the power input of the relay K1 are respectively connected with the 3 and 4 pins of the first set of microcomputer time control switch a1, at this moment, the relay 1 loses power and no longer attracts the two input ends of the control power supply and the two normally closed contact ends of the relay to be respectively closed, and the two input ends of the control power supply (and the 3 and 4 pins of the voltage stabilizing circuit a are normally open) and the two normally open contact ends of the relay are respectively opened. Because the two power input ends of the second set of microcomputer time control switch A2 are respectively connected with the two normally closed contact ends of the relay K1, at the moment, the second set of microcomputer time control switch A2 can be powered to work, and because the two power input ends of the relay K4 are respectively connected with the two normally closed contact ends of the relay K1, the relay K4 can be powered to attract the two control power input ends (respectively connected with two poles of a 220V alternating current power supply) and the two contact ends to be respectively closed. Because two normally open contact ends of the relay K4 are respectively connected with two power input ends of the irradiation device body F, after the tray 5 runs in place and the first set of microcomputer time control switch A1 stops outputting power, the irradiation device body F can be electrified to work, and then irradiation test is carried out on detection food on the tray 5. After the second set of microcomputer time control switch A2 is powered on to work, under the action of 3 and 4 feet output power supply time preset by operating a key of a second set of microcomputer time control switch A2 by an inspector, the 3 and 4 feet of the second set of microcomputer time control switch A2 output power supply for 9 seconds at intervals of 5 seconds to enter two ends of the power supply input end of the relay K2 (the irradiation device body F works within 5 seconds and irradiates to detect food samples), and then the relay K2 is powered on to attract two input ends of the control power supply and two normally open contact ends of the relay K2 to be closed respectively. Because one end of the resistor R is connected with the pin 3 of the second set of microcomputer time control switch A2, after the pin 3 of the second set of microcomputer time control switch A2 outputs a positive power supply, the positive power supply is conducted by the resistor R voltage reduction current limiting trigger silicon controlled rectifier VS (the anode is communicated with the pin 3 of the voltage stabilizing circuit A), and further, the relay K3 is electrified to attract the input end of the control power supply and the normally closed contact end to be open; because one of the alternating current power supply input ends of the irradiation device body F is connected with the normally closed contact end of the relay K3, and the relay K3 controls the power supply input end to be connected with the normally open contact end of the relay K4, the irradiation device body F can stop working immediately after the relay K3 is electrified and sucked, and the irradiation device body F can not work any more in the downward movement of the subsequent support 5. Because two normally open contact ends (the control power supply input end is respectively communicated with the pins 3 and 4 of the voltage stabilizing circuit A) of the relay K2 are respectively connected with the negative and positive pole power supply input ends of the motor speed reducing mechanism M, the motor speed reducing mechanism M can work for a period of time within 9 seconds. After the motor reducing mechanism M works by electrifying, the power output shaft 21 of the motor reducing mechanism M can rotate anticlockwise under the action of the motor and the reducing gear in the motor reducing mechanism M, so that the external thread of the power output shaft of the motor reducing mechanism acts on the internal thread of the sleeve 22 at the upper end of the motor reducing mechanism, and the sleeve 22 moves downwards and drives the tray 5 to move downwards and the distance between the lower end of the upper barrel 8 is gradually increased; during the downward movement of the casing 22, the casing 22 goes down along the two guide rods 24 through the two ferrules 23, and the two guide rods 24 guide the casing 22 and the tray 5 to go down and prevent the casing 22 from rotating in the downward movement and further preventing the downward movement from being realized. After 9 seconds, after the output of the power supply is stopped by the pins 3 and 4 of the second microcomputer time control switch A2, the relay K2 is not attracted any more, the motor speed reducing mechanism M stops rotating, and the tray 5 moves to a position close to the lower dead point, so that the distance between the upper end of the tray 5 and the lower end of the upper barrel 8 is increased, and an inspector can conveniently take out a food sample to be inspected; due to the self-locking function of the silicon controlled rectifier VS, even if the power supply is stopped to be output by 3 of the second microcomputer time control switch A2 after 9 seconds, the relay K3 can be continuously electrified for attraction, and the irradiation device body F can be continuously stopped to work, so that the irradiation device body F can not work when a tester takes out a test sample, and only after the tester disconnects the power switch K, all circuits can be powered off and do not work any more, and the tester is ready for next use. Through the above, the invention reduces the operation process and brings convenience to the inspection personnel. The resistance value of the resistor R is 4.7K; the controllable silicon VS is a unidirectional controllable silicon with the model MCR 100-1; relays K1, K2, K3, K4 are 24V dc relays of the brand sontenn/pine vine, having two power input terminals, two normally open contact terminals, two normally closed contact terminals, two control power input terminals.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
It is to be understood that although the description is made in terms of embodiments, not every embodiment includes only a single embodiment, and such descriptions are for clarity only and should be taken as a whole by those skilled in the art, and the embodiments in the examples can be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (4)
1. A device convenient for inspectors to use food irradiation detection equipment comprises a voltage-stabilized power supply, a motor speed reducing mechanism and a micro power switch, and is characterized by also comprising a timing circuit, a tray, a supporting seat, a supporting plate, an upper barrel and a lower barrel; the lower end of the supporting plate is fixedly arranged at the upper end of the rear side of the supporting seat, and the upper end of the shell of the irradiation device body is fixedly arranged at the upper end in the upper barrel; the rear end of the upper barrel is fixedly arranged at the upper middle part of the front side of the supporting plate, the lower end of the lower barrel is fixedly arranged at the upper middle part of the supporting seat, the shell of the motor speed reducing mechanism is fixedly arranged at the lower middle part in the lower barrel, and the middle part of the lower end of the circular tray is fixedly arranged at the upper end of a power output shaft of the motor speed reducing mechanism; the stabilized voltage supply, the timing circuit and the knob connected with the circuit board inside the irradiation device body are arranged on the circuit board in the element box, the element box is fixedly arranged in the middle of the upper end of the outer side of the upper barrel, and the shells of the two micro-motion power switches are respectively and fixedly arranged at the front end and the rear end of the lower part of the outer side of the upper barrel; the power input end of the stabilized voltage power supply and the two poles of the 220V alternating current power supply are respectively connected through leads, the two power output ends of the stabilized voltage power supply and the two power input ends of the timing circuit are respectively connected through leads, the two alternating current control power supply output ends of the timing circuit and the two power input ends of the irradiation device body are respectively connected through leads, the first direct current control power supply output end of the timing circuit and the positive and negative pole power supply input ends of the motor speed reducing mechanism are respectively connected through leads, the second direct current control power supply output end of the timing circuit and the negative and positive pole power supply input ends of the motor speed reducing mechanism are respectively connected through leads, and the two micro-motion power switches are connected in series between the first positive direct current control power supply output end of the timing circuit and the positive pole power supply input end of the motor speed reducing mechanism; the outer diameter of the tray is larger than that of the lower end of the upper barrel, an annular groove is formed in the upper middle of the tray and serves as a detection sample placing station, an annular sealing rubber strip is arranged at the side end of the upper portion of the tray, the upper end of the tray abuts against action keys of the two micro power switches after the upper end of the tray is tightly contacted with the lower portion of the upper barrel, and moving contacts and static contacts in the two micro power switches are opened; the motor speed reducing mechanism is a direct current motor gear reducer, a power output shaft of the motor speed reducing mechanism is provided with external threads from top to bottom, the power output shaft of the motor speed reducing mechanism is matched with a sleeve pipe, the interior of the sleeve pipe is provided with internal threads from top to bottom, the internal threads of the sleeve pipe are screwed into the external threads of the power output shaft from top to bottom, the middle part of the lower end of the circular tray is fixedly arranged at the upper end of the sleeve pipe, limiting rings are fixedly arranged at the left end and the right end of the outer side of the middle part of the sleeve pipe respectively, guide rods are fixedly arranged at the left side and the right side of the middle part of the upper end of a shell of the motor speed reducing mechanism from top to bottom respectively, and the guide rods are positioned in the limiting rings; the timing circuit comprises two sets of microcomputer time control switches and relays, the two sets of microcomputer time control switches are connected through circuit board wiring, two pins 1 and 2 of a power input end of a first set of microcomputer time control switch are respectively connected with two control power input ends of a first relay, two control power input ends of a second relay are respectively connected, two normally closed contact ends of the first relay are respectively connected with two pins 1 and 2 of a power input end of a second set of microcomputer time control switch, two ends of a power input end of a third relay are respectively connected through leads, two pins 3 and 4 of a power output end of the first set of microcomputer time control switch are respectively connected with two power input ends of the first relay, and two pins 3 and 4 of a power output end of the second set of microcomputer time control switch are respectively connected with two power input ends of the second relay; the timing circuit is also matched with a thyristor, a resistor and a fourth relay, the thyristor, the resistor and the fourth relay are connected through a circuit board, the cathode of the thyristor is connected with the anode power supply input end of the relay, one end of the resistor is connected with the control electrode of the thyristor, the other end of the resistor is connected with the 3 pins of the anode power supply output end of the second set of microcomputer time control switch, the anode of the thyristor is connected with the 3 pins of the anode power supply output end of the voltage stabilizing circuit, the cathode power supply input end of the relay is connected with the 4 pins of the cathode power supply output end of the voltage stabilizing circuit, and one alternating current power supply input end of the irradiation device body is connected in series between the control power supply input end of the fourth relay and the normally closed contact end.
2. The apparatus as claimed in claim 1, wherein the upper end of the upper cylinder has a closed structure, the lower end of the upper cylinder has an open structure, and the upper portion of the lower cylinder has an open structure.
3. The device for facilitating the use of the food irradiation detection equipment by the inspector according to claim 1, wherein the regulated power supply is an ac 220V to dc switching power supply module.
4. The device for facilitating the use of the food irradiation detection equipment by the inspector according to claim 1, wherein the micro-power switch is a self-resetting normally closed contact micro-power switch.
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| CN110398573A (en) | 2019-11-01 |
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