A sampling device for food safety detection

Abstract

The utility model provides a kind of sampling device for food safety detection belongs to food detection sampling technical field, it solves the technical problems such as traditional sampling device dismounting complex, sampling process is operated with effort, control mode is relatively single, step is complicated, sampling efficiency is lower etc. Including shell, connecting component, electromagnetic valve one, two-way vacuum pump, communicating joint, composite control switch, controller and three sampling tubes, the inside of shell is provided with mounting cavity, electromagnetic valve one, two-way vacuum pump, communicating joint and controller are all fixed in the inside of mounting cavity, connecting component, electromagnetic valve one, two-way vacuum pump and composite control switch are electrically connected with controller. The utility model is combined by structure optimization and intelligent control, realizes the comprehensive advantage that sampling tube is quickly disassembled, sample is extracted and discharged efficiently and stably, operation is intelligent and convenient, can effectively satisfy the demand of sampling efficiency, accuracy and reliability in food safety detection.

Description

Technical Field

[0001] This utility model belongs to the field of food testing and sampling technology, and relates to a sampling device for food safety testing. Background Technology

[0002] In the field of food safety testing, the sampling of liquid food is a key step in ensuring the accuracy of testing, directly affecting the accuracy and reliability of test results. However, existing sampling devices have many problems: traditional sampling devices are complicated to disassemble and assemble, making it inconvenient to replace sampling tubes; during the sampling process, manual suction or complex mechanical transmission structures are used to control the extraction and discharge of samples, which is laborious; at the same time, the control methods of existing devices are relatively simple, often requiring multiple operations of different buttons to complete steps such as sampling tube selection and status switching, resulting in low sampling efficiency.

[0003] Therefore, we propose a sampling device for food safety testing. Through the combination of structural optimization and intelligent control, it achieves comprehensive advantages such as rapid assembly and disassembly of the sampling tube, efficient and stable sample extraction and discharge, and intelligent and convenient operation. It can effectively meet the requirements of sampling efficiency, accuracy and reliability in food safety testing. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing a sampling device for food safety testing. The technical problem this utility model aims to solve is: how to achieve the comprehensive advantages of a sampling device through a combination of structural optimization and intelligent control, such as rapid assembly and disassembly of the sampling tube, efficient and stable sample extraction and discharge, and intelligent and convenient operation, so as to effectively meet the requirements of sampling efficiency, accuracy and reliability in food safety testing.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A sampling device for food safety testing includes a housing, a connecting assembly, a solenoid valve, a bidirectional vacuum pump, a connecting connector, a composite control switch, a controller, and three sampling tubes. The housing has an internal mounting cavity. The solenoid valve, bidirectional vacuum pump, connecting connector, and controller are all fixed inside the mounting cavity. The composite control switch is fixed at the upper end of the housing. The connecting assembly is located at the lower end of the housing. The three sampling tubes are detachably mounted at the lower end of the connecting assembly and are parallel to each other. The upper end of each sampling tube is connected to the connecting assembly, and the outer wall of the sampling tube has graduations. The upper end of the connecting assembly is connected to the solenoid valve. One end of the bidirectional vacuum pump is connected to the end of the solenoid valve furthest from the connecting assembly, and the other end of the bidirectional vacuum pump is connected to the connecting connector. The end of the connecting connector furthest from the bidirectional vacuum pump extends out of the housing. The connecting assembly, solenoid valve, bidirectional vacuum pump, and composite control switch are all electrically connected to the controller.

[0007] The working principle of this utility model is as follows: During use, pressing and holding the composite control switch (for 1-3 seconds) controls the device to turn on or off. After powering on, select the appropriate size and quantity of sampling tubes, connect the sampling tubes to the lower end of the connecting assembly, insert the lower end of the sampling tube into the liquid food to be sampled, and press and hold the composite control switch (triggered after more than 5 seconds) to begin suction. Once the controller controls the solenoid valve to open, the bidirectional vacuum pump operates, extracting the air inside the sampling tube and discharging it through the connecting joint, drawing the liquid food into the sampling tube. Releasing the composite control switch stops the suction process. Move the device to a suitable position, rotate the composite control switch, and select the appropriate... When the corresponding sampling tube is selected, pressing the composite control switch will open the solenoid valve controlled by the controller, causing the bidirectional vacuum pump to work in reverse, injecting outside air into the corresponding sampling tube and discharging the liquid food in the sampling tube. During the discharge process, pressing the composite control switch again will pause the discharge, and pressing it again will resume the discharge. After sampling is completed, double-clicking the composite control switch (with an interval of less than 0.3 seconds between the two presses) will reset the device status and restore it to the initial state. If the next sampling is required, a new sampling tube should be replaced. During use, sampling tubes of different lengths can be selected to simultaneously sample liquid food at different depths in the same container, simplifying the sampling process.

[0008] The connecting assembly includes a triangular connecting block, which is hollow inside. The upper end of the triangular connecting block is fixed to the lower end of the outer shell. An infrared sensor, a vent connector, and an indicator light are fixed on each of the three side faces of the triangular connecting block. Limiting grooves are formed at the lower ends of the three side faces of the triangular connecting block. The vent connector is made of stainless steel and is fitted with a rubber sealing ring. Several circumferentially distributed vent ports are formed on the side of the vent connector. A multi-port connector and three solenoid valves are fixed inside the triangular connecting block. The multi-port connector is connected to solenoid valve one, and the three vent connectors are connected to the three solenoid valves two respectively. The three solenoid valves two are connected to the multi-port connector respectively. The infrared sensor, solenoid valve two, and indicator light are all electrically connected to the controller.

[0009] With the above structure, when the sampling tube is connected to the vent connector, the limiting groove is used for positioning, the rubber sealing ring ensures sealing, the infrared sensor detects whether the sampling tube is connected at the corresponding position and transmits the signal to the controller. If the sampling tube is connected, the controller controls the opening of the corresponding solenoid valve. During operation, when the composite control switch is rotated to select the corresponding sampling tube, the controller controls the corresponding indicator light to light up, displaying the selection status of the corresponding sampling tube.

[0010] The lower end of the sampling tube is tapered, and a rubber stopper is provided inside the sampling tube. A mating opening is provided on the upper side wall of the sampling tube, the shape of which corresponds to the triangular connecting block. A limiting piece is fixed inside the mating opening, and the position and specifications of the limiting piece correspond to the limiting groove. A metal sealing ring is fixed inside the upper end of the sampling tube, and one end of the metal sealing ring extends out of the sampling tube. The position and specifications of the metal sealing ring correspond to the vent connector. A sealing ring is fixed on the end of the metal sealing ring inside the sampling tube. A strong magnetic sheet is provided inside the sampling tube, and the strong magnetic sheet is attracted to one end of the metal sealing ring. The specifications of the strong magnetic sheet are compatible with the metal sealing ring.

[0011] With the above structure, the lower end of the sampling tube is tapered, making it easy to insert into liquid food. It has an internal rubber stopper that matches the shape of the opening and triangular connecting block. A limiting plate and limiting groove are used for positioning. During installation, the vent connector is inserted into the metal sealing ring, and the strong magnetic plate is pushed off the metal sealing ring, attracting the magnetic plate to the vent connector, thus connecting the assembly and the sampling tube. During operation, the rubber stopper moves under air pressure, drawing liquid food into or out of the sampling tube. When the sampling tube is removed, the strong magnetic plate resets, covering the end of the metal sealing ring, ensuring that the air pressure inside the sampling tube remains constant and preventing liquid food from flowing out.

[0012] The battery is detachably installed inside the mounting cavity, and a charging port is fixed at the upper end of the outer shell. The battery is electrically connected to the charging port, and both the battery and the charging port are electrically connected to the controller.

[0013] With the above structure, the battery serves as the power source, supplying power to the entire device and maintaining its normal operation. The charging port is used to connect to an external power source to charge the battery. The controller is responsible for managing the battery charging process, ensuring charging safety and efficiency.

[0014] The composite control switch has a rotary button fixed on its operating head, and a hand guard fixed on the upper end of its housing.

[0015] With the above structure, the rotary button is fixed to the operating head of the composite control switch for operating the composite control switch, and the hand guard makes it easy for the operator to hold the device.

[0016] Compared with existing technologies, this sampling device for food safety testing has the following advantages:

[0017] 1. By using the sampling tube and connecting components, the sampling tube can be quickly disassembled and assembled. The appropriate number and specifications of sampling tubes can be selected according to the needs to adapt to diverse usage scenarios, making sampling simpler and more accurate. At the same time, when the sampling tube is removed, the strong magnetic sheet will automatically reset and cover the metal sealing ring, which can maintain stable air pressure inside the tube and effectively prevent sample leakage.

[0018] 2. By using solenoid valve one and solenoid valve two in conjunction with a bidirectional vacuum pump, the sample extraction and discharge can be completed by controlling the air pressure in the sampling tube, eliminating the need for complex mechanical structures, making the device simpler, more reliable, and more versatile.

[0019] 3. By combining the composite control switch, indicator lights, infrared sensors and controller, the device can realize functions such as power on / off, sampling tube selection, status display and automatic detection of connection status, achieving intelligent control and improving the ease of operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a structural schematic diagram of some components in this utility model.

[0022] Figure 3 This is a schematic diagram of the triangular connecting block in this utility model.

[0023] Figure 4 This is a structural schematic diagram of some components of the connecting assembly in this utility model.

[0024] Figure 5 This is a three-dimensional structural diagram of the sampling tube in this utility model.

[0025] Figure 6 This is a cross-sectional structural diagram of the sampling tube in this utility model.

[0026] In the diagram: 1. Outer shell; 2. Mounting cavity; 3. Connecting assembly; 4. Sampling tube; 5. Solenoid valve one; 6. Two-way vacuum pump; 7. Connecting connector; 8. Composite control switch; 9. Controller; 10. Triangular connecting block; 11. Infrared sensor; 12. Multi-port connector; 13. Vent connector; 14. Vent port; 15. Rubber sealing ring; 16. Solenoid valve two; 17. Limiting groove; 18. Rubber plug; 19. Mating opening; 20. Limiting piece; 21. Metal sealing ring; 22. Sealing ring; 23. Strong magnetic sheet; 24. Battery; 25. Charging port; 26. Rotary button; 27. Hand guard. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] like Figures 1-6As shown, this sampling device for food safety testing includes a housing 1, a connecting assembly 3, a solenoid valve 5, a bidirectional vacuum pump 6, a connecting connector 7, a composite control switch 8, a controller 9, and three sampling tubes 4. The housing 1 has an internal mounting cavity 2. The solenoid valve 5, the bidirectional vacuum pump 6, the connecting connector 7, and the controller 9 are all fixed inside the mounting cavity 2. The composite control switch 8 is fixed at the upper end of the housing 1. The connecting assembly 3 is located at the lower end of the housing 1. The three sampling tubes 4 are detachably mounted at the lower end of the connecting assembly 3 and are parallel to each other. The upper end of each sampling tube 4 is connected to the connecting assembly 3, and the outer wall of each sampling tube 4 has graduations. The upper end of the connecting assembly 3 is connected to the solenoid valve 5. One end of the bidirectional vacuum pump 6 is connected to the end of the solenoid valve 5 away from the connecting assembly 3, and the other end of the bidirectional vacuum pump 6 is connected to the connecting connector 7. The end of the connecting connector 7 away from the bidirectional vacuum pump 6 extends out of the housing 1. The connecting assembly 3, the solenoid valve 5, the bidirectional vacuum pump 6, and the composite control switch 8 are all electrically connected to the controller 9.

[0029] In this embodiment, during use, pressing and holding the composite control switch 8 (for 1-3 seconds) controls the device to turn on or off. After powering on, select the appropriate size and quantity of sampling tubes 4, connect the sampling tubes 4 to the lower end of the connecting assembly 3, insert the lower end of the sampling tubes 4 into the liquid food to be sampled, press and hold the composite control switch 8 (triggered after more than 5 seconds), and begin suction. The controller 9 controls the solenoid valve 5 to open, and the bidirectional vacuum pump 6 works to extract the air inside the sampling tubes 4 and discharge it from the connecting connector 7, sucking the liquid food into the sampling tubes 4. Release the composite control switch 8, and the suction process stops. Move the device to a suitable position, rotate the composite control switch 8, and select the corresponding... When sampling tube 4 is pressed, the composite control switch 8 is activated, and the controller 9 controls the solenoid valve 5 to open. The bidirectional vacuum pump 6 works in reverse, injecting outside air into the corresponding sampling tube 4 and discharging the liquid food in the sampling tube 4. During the discharge process, pressing the composite control switch 8 again can pause the discharge, and pressing it again can continue the discharge. After sampling is completed, double-clicking the composite control switch 8 (the interval between the two presses is less than 0.3 seconds) will reset the device status and restore the device to the initial state. If the next sampling is required, a new sampling tube 4 should be replaced. When using the device, sampling tubes of different lengths 4 can be selected to simultaneously sample liquid food at different depths in the same container, simplifying the sampling process.

[0030] The connecting component 3 includes a triangular connecting block 10, which is hollow inside. The upper end of the triangular connecting block 10 is fixed to the lower end of the outer shell 1. An infrared sensor 11, a vent connector 13, and an indicator light are fixed on each of the three side faces of the triangular connecting block 10. A limit groove 17 is opened at the lower end of each of the three side faces of the triangular connecting block 10. The vent connector 13 is made of stainless steel and is fitted with a rubber sealing ring 15. Several circumferentially distributed vent ports 14 are opened on the side of the vent connector 13. A multi-port connector 12 and three solenoid valves 16 are fixed inside the triangular connecting block 10. The multi-port connector 12 is connected to the solenoid valve 5. The three vent connectors 13 are connected to the three solenoid valves 16 respectively. The three solenoid valves 16 are connected to the multi-port connector 12 respectively. The infrared sensor 11, the solenoid valves 16, and the indicator light are all electrically connected to the controller 9.

[0031] In this embodiment, when the sampling tube 4 is connected to the vent connector 13, the limiting groove 17 is used for positioning, the rubber sealing ring 15 ensures sealing, the infrared sensor 11 detects whether the sampling tube 4 is connected at the corresponding position, and transmits the signal to the controller 9. If the sampling tube 4 is connected, the controller 9 controls the opening of the corresponding solenoid valve 16. During operation, when the composite control switch 8 is rotated to select the corresponding sampling tube 4, the controller 9 controls the corresponding indicator light to light up, displaying the selection status of the corresponding sampling tube 4.

[0032] The lower end of the sampling tube 4 is tapered, and a rubber stopper 18 is provided inside the sampling tube 4. A mating opening 19 is provided on the upper side wall of the sampling tube 4. The shape of the mating opening 19 corresponds to the triangular connecting block 10. A limiting piece 20 is fixed inside the mating opening 19. The position and specifications of the limiting piece 20 correspond to the limiting groove 17. A metal sealing ring 21 is fixed inside the upper end of the sampling tube 4. One end of the metal sealing ring 21 extends out of the sampling tube 4. The position and specifications of the metal sealing ring 21 correspond to the vent connector 13. A sealing ring 22 is fixed on the end of the metal sealing ring 21 inside the sampling tube 4. A strong magnetic sheet 23 is provided inside the sampling tube 4. The strong magnetic sheet 23 is attracted to one end of the metal sealing ring 21. The specifications of the strong magnetic sheet 23 are compatible with the metal sealing ring 21.

[0033] In this embodiment, the lower end of the sampling tube 4 is tapered to facilitate insertion into liquid food. It has an internal rubber stopper 18 that matches the shape of the opening 19 and the triangular connecting block 10. A limiting piece 20 and a limiting groove 17 are used for positioning. During installation, the vent connector 13 is inserted into the metal sealing ring 21, and the strong magnetic piece 23 is pushed off the metal sealing ring 21, adsorbing onto the vent connector 13, thus connecting the connecting assembly 3 and the sampling tube 4. During operation, the rubber stopper 18 moves under air pressure, drawing liquid food into or out of the sampling tube 4. When the sampling tube 4 is removed, the strong magnetic piece 23 resets, covering the end of the metal sealing ring 21, ensuring that the air pressure inside the sampling tube 4 remains constant and preventing liquid food from flowing out.

[0034] The battery 24 is detachably installed inside the mounting cavity 2, and a charging port 25 is fixed at the upper end of the outer shell 1. The battery 24 is electrically connected to the charging port 25, and both the battery 24 and the charging port 25 are electrically connected to the controller 9.

[0035] In this embodiment, the battery 24 serves as a power source to power the entire device and maintain its normal operation. The charging port 25 is used to connect to an external power source to charge the battery 24. The controller 9 is responsible for managing the charging process of the battery 24 to ensure charging safety and efficiency.

[0036] A rotary button 26 is fixed on the operating head of the composite control switch 8, and a hand guard 27 is fixed on the upper end of the housing 1.

[0037] In this embodiment, the rotary button 26 is fixed to the operating head of the composite control switch 8 for operating the composite control switch 8, and the hand guard 27 facilitates the operator's grip on the device.

[0038] The working principle of this utility model is as follows: Press and hold the composite control switch 8 (for 1-3 seconds) to turn the device on or off. After powering on, the battery 24 in the mounting cavity 2 powers the entire device. The charging port 25 can be connected to an external power source to charge the battery 24 under the management of the controller 9. Select a sampling tube 4 of appropriate size and quantity, and position it through the limiting plate 20 and the limiting groove 17. Connect the sampling tube 4 to the vent connector 13. At this time, the vent connector 13 extends into the metal sealing ring 21 and pushes open the strong magnetic plate 23. The strong magnetic plate 23 is attracted to the vent connector 13, realizing the connection. The rubber sealing ring 15 ensures the seal. After the infrared sensor 11 detects the connection, the controller 9 opens the corresponding solenoid valve 16. Insert the conical lower end of the sampling tube 4 into the liquid food, press and hold the composite control switch 8 (triggered after more than 5 seconds). The controller 9 controls the solenoid valve 5 to open, and the bidirectional vacuum pump 6 works. The liquid flows through the connecting connector 7, the multi-port connector 12, the solenoid valve 16, and the vent connector 13. Air is drawn out of the sampling tube 4 through the air inlet 14. Under air pressure, the rubber stopper 18 moves upward, and the liquid food enters the sampling tube 4. The sampling volume can be observed by the scale on its outer side. Releasing the composite control switch 8 stops the sampling. After moving the device, rotate the rotary button 26 of the composite control switch 8 to select the corresponding sampling tube 4. The corresponding indicator light lights up, showing the selected state. Press the composite control switch 8, and the controller 9 controls the bidirectional vacuum pump 6 to work in reverse, injecting air to push the rubber stopper 18 to discharge the liquid food. During the discharge process, pressing it again can pause or continue the discharge. After sampling is completed, double-click the composite control switch 8 (the interval between the two presses is less than 0.3 seconds) to reset the device state. When the sampling tube 4 is removed, the strong magnetic sheet 23 resets and covers the end of the metal sealing ring 21 to prevent liquid from flowing out. If the next sampling is required, a new sampling tube 4 should be replaced. The hand guard 27 on the upper end of the outer shell 1 is easy to hold. During use, sampling tubes 4 of different lengths can be selected to sample liquid food at different depths in the same container at the same time.

[0039] In summary, by using the sampling tube 4 in conjunction with the connecting component 3, the sampling tube 4 can be quickly disassembled and assembled. The appropriate number and specifications of sampling tubes 4 can be selected according to the needs to adapt to diverse usage scenarios, making sampling simpler and more accurate. At the same time, when the sampling tube 4 is removed, the strong magnetic sheet 23 will automatically reset and cover the metal sealing ring 21, which can maintain stable air pressure inside the tube and effectively prevent sample leakage.

[0040] By using solenoid valve 5 and solenoid valve 16 in conjunction with the bidirectional vacuum pump 6, the sample extraction and discharge can be completed by controlling the air pressure in the sampling tube 4, eliminating the need for complex mechanical structures, making the device simpler, more reliable, and more versatile.

[0041] By combining the composite control switch 8, indicator lights, infrared sensor 11, and controller 9, the device can be turned on and off, sample tube 4 can be selected, status can be displayed, and connection status can be automatically detected, thus achieving intelligent control and improving ease of operation.

[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A sampling device for food safety testing, comprising a housing (1), a connecting assembly (3), a solenoid valve (5), a bidirectional vacuum pump (6), a connecting connector (7), a composite control switch (8), a controller (9), and three sampling tubes (4), characterized in that, The housing (1) has an internal mounting cavity (2). The solenoid valve (5), bidirectional vacuum pump (6), connecting connector (7), and controller (9) are all fixed inside the mounting cavity (2). The composite control switch (8) is fixed to the upper end of the housing (1). The connecting assembly (3) is located at the lower end of the housing (1). Three sampling tubes (4) are detachably mounted at the lower end of the connecting assembly (3), and the three sampling tubes (4) are parallel to each other. The upper end of the sampling tubes (4) is connected to the connecting assembly (3) for sampling. The outer wall of the tube (4) is marked with a scale. The upper end of the connecting component (3) is connected to the solenoid valve (5). One end of the bidirectional vacuum pump (6) is connected to the end of the solenoid valve (5) away from the connecting component (3). The other end of the bidirectional vacuum pump (6) is connected to the connecting connector (7). The end of the connecting connector (7) away from the bidirectional vacuum pump (6) extends out of the outer shell (1). The connecting component (3), the solenoid valve (5), the bidirectional vacuum pump (6) and the composite control switch (8) are all electrically connected to the controller (9).

2. The sampling device for food safety testing according to claim 1, characterized in that, The connecting component (3) includes a triangular connecting block (10), which is hollow inside. The upper end of the triangular connecting block (10) is fixed to the lower end of the outer shell (1). An infrared sensor (11), a vent connector (13), and a signal light are fixed on the three side faces of the triangular connecting block (10). A limit groove (17) is opened at the lower end of the three side faces of the triangular connecting block (10). The vent connector (13) is made of stainless steel and a rubber sealing ring (15) is fitted on the vent connector (13). Furthermore, several circumferentially distributed vents (14) are provided on the side of the vent connector (13). A multi-port connector (12) and three solenoid valves (16) are fixed inside the triangular connecting block (10). The multi-port connector (12) is connected to the solenoid valve (5). The three vent connectors (13) are connected to the three solenoid valves (16) respectively. The three solenoid valves (16) are connected to the multi-port connector (12) respectively. The infrared sensor (11), the solenoid valves (16) and the signal light are all electrically connected to the controller (9).

3. The sampling device for food safety testing according to claim 2, characterized in that, The lower end of the sampling tube (4) is tapered. A rubber stopper (18) is provided inside the sampling tube (4). A mating opening (19) is provided on the upper side wall of the sampling tube (4). The shape of the mating opening (19) corresponds to the triangular connecting block (10). A limiting piece (20) is fixed inside the mating opening (19). The position and specifications of the limiting piece (20) correspond to the limiting groove (17). A metal sealing ring (21) is fixed inside the upper end of the sampling tube (4). One end of the metal sealing ring (21) extends out of the sampling tube (4). The position and specifications of the metal sealing ring (21) correspond to the vent connector (13). A sealing ring (22) is fixed on one end of the metal sealing ring (21) inside the sampling tube (4). A strong magnetic sheet (23) is provided inside the sampling tube (4). The strong magnetic sheet (23) is attracted to one end of the metal sealing ring (21). The specifications of the strong magnetic sheet (23) are compatible with the metal sealing ring (21).

4. A sampling device for food safety testing according to claim 3, characterized in that, The mounting cavity (2) is detachably equipped with a battery (24), and the upper end of the outer shell (1) is fixed with a charging port (25). The battery (24) is electrically connected to the charging port (25), and both the battery (24) and the charging port (25) are electrically connected to the controller (9).

5. A sampling device for food safety testing according to claim 4, characterized in that, The composite control switch (8) has a rotary button (26) fixed on its operating head, and a hand guard (27) fixed on the upper end of the outer casing (1).

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