Food quantity detection device and detection method for food receiving

Abstract

The present invention provides a food quantity detection device and a detection method for food quantity receipt, comprising a screen, a middle frame installed at the bottom of the screen, an instrument back shell installed at the bottom of the middle frame, a switch button installed on the outer side of the instrument back shell, a handle installed at the bottom of the instrument back shell, a vertical pole installed at the bottom of the handle, the bottom of the vertical pole is connected to the top of a sensor waterproof cover by a fastening screw, a transmission component driven by pressure is arranged at the bottom of the sensor waterproof cover, a reset spring is squeezed and compressed by a pressure plate during downward movement, so that the support rod completely enters the bottom through hole of the sensor waterproof cover, so that the anti-skid pad at the bottom of the sensor waterproof cover is in contact with the ground, and the scale pan is in contact with the ground, thereby further improving the stability of the scale pan when weighing food, and the scale pan is in contact with the ground to prevent the moisture of the food from flowing downward through the edge of the scale pan into the sensor and causing damage to the sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic scales, and in particular to a food quantity detection device and a detection method for food quantity detection used for food receipt. Background Art

[0002] When receiving food, you need to use an electronic scale to weigh the weight of the food. The main purpose of weighing food is to prevent moisture from entering the sensor and causing damage during the weighing process, thereby extending the service life of the electronic scale and facilitating long-term storage and use. This is a technical revelation for electronic scales.

[0003] Research on electronic scales found the following problems:

[0004] When weighing food with water, the electronic scale seals the sensor with a sealed shell, and the sensor is set at the bottom of the scale pan. When the food with water is placed on the scale pan surface, the water drips down under the action of gravity with impact force and flows along the scale pan surface to its edge. The water droplets slide down from the edge to the inner edge of the bottom of the scale pan and then drip. In the case of a lot of water, the water droplets may continue to erode the sealed shell of the sensor through the edge of the scale pan. The water droplets are not discharged for a long time and soak the sealed shell, causing the water droplets to enter the sealed shell, thereby failing to achieve the purpose of extending the life of the electronic scale;

[0005] At present, CN110332977A in the prior art discloses a waterproof and moisture-proof Internet of Things visual scale, which discloses an electronic scale. The invention comprises a waterproof and moisture-proof breathable component made of an ePTFE membrane, which is sealed and connected to the sensor module and the shell surface of the electronic scale instrument. The component has low cost and simple structure. When applied to the sensor module of the electronic scale, it can not only play the role of sealing, waterproof and moisture-proof, but also form an air flow channel to ensure the detection accuracy of the sensor module; when applied to the electronic scale instrument, it can also play the role of sealing, waterproof and moisture-proof, but also form an air flow channel to play a role of heat dissipation;

[0006] The present invention can mainly solve the problem that water droplets slide down from the edge to the inner edge of the bottom of the scale pan and then continue to corrode the sealed shell after dripping, resulting in the water droplets entering the sealed shell and failing to extend the life of the electronic scale. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an ingredient quantity detection device and a detection method for ingredient receipt to solve the problems described in the above background technology.

[0008] The purpose and efficacy of a food quantity detection device and a detection method for food quantity receiving of the present invention are achieved by the following specific technical means: a food quantity detection device for food quantity receiving, comprising a screen, a middle frame is installed at the bottom of the screen, an instrument rear shell is installed at the bottom of the middle frame, a switch button is installed on the outer side of the instrument rear shell, a handle is installed at the bottom of the instrument rear shell, a vertical pole is installed at the bottom of the handle, the bottom of the vertical pole is connected to the top of the sensor waterproof cover by a fastening screw, a U-shaped frame is installed at the top edge of the sensor waterproof cover, a scale pan is arranged on one side of the top of the sensor waterproof cover, a caster is installed on one side of the bottom of the sensor waterproof cover, a transmission assembly driven by pressure is arranged at the bottom of the sensor waterproof cover, and the transmission assembly comprises four-corner foot pads, a support rod, a reset spring, a pressure plate, a driving gear and a connecting gear;

[0009] A support rod is installed on the top of the four-corner foot pad, a pressure plate is connected to the top of the support rod, a return spring is installed on the top of the pressure plate, a driving gear is arranged on one side of the return spring, and a connecting gear is arranged on the outer side of the driving gear;

[0010] Furthermore, the scale pan and the fastening screws are made of stainless steel, the bottom of the scale pan is concave, and through holes are provided on both sides of the scale pan. An anti-slip pad is installed at the bottom of the sensor waterproof cover, and the casters are made of polyurethane.

[0011] Furthermore, four through holes are provided at the bottom of the sensor waterproof cover, and reset springs are embedded in the four through holes. One side of the first through hole on the right side is open.

[0012] Furthermore, an arc strip is provided on the outer side surface of the reset spring adjacent to the through hole opening at the bottom of the sensor waterproof cover.

[0013] Furthermore, the height of the arc strip on the outer side of the return spring is smaller than the distance between the teeth of the driving gear, and an extension component for auxiliary weighing is provided on the outer side of the driving gear, and the driving gear and the connecting gear are arranged in vertical meshing.

[0014] Furthermore, the diameter of the pressure plate is slightly larger than the outer diameter of the reset spring and smaller than the diameter of the through hole at the bottom of the waterproof cover of the sensor.

[0015] Furthermore, the expansion component includes a transmission gear, a first bevel gear, a connecting rod, a second bevel gear, a sub-disk, a screw and a third bevel gear. A connecting rod is arranged at the center of the transmission gear, the first bevel gear is installed at one end of the connecting rod close to the transmission gear, the second bevel gear is installed at one end of the connecting rod away from the transmission gear, the third bevel gear is arranged on the outer side surface of the second bevel gear, a screw is installed on one side of the third bevel gear, and a sub-disk is arranged at one end of the screw away from the third bevel gear.

[0016] Furthermore, the transmission gear is arranged at the left end of the connecting rod and maintains a distance of eight to ten centimeters from the first bevel gear, and the transmission gear is arranged to be vertically meshed with the connecting gear.

[0017] Furthermore, the sub-pan is embedded in the bottom of the weighing pan, and the sub-pan is matched with the through holes on the left and right sides of the weighing pan. Two through holes are provided on the side of the sub-pan close to the connecting rod. The insides of the two through holes are provided with threads matching the screw rod, and the two through holes are connected to the screw rod through threads. At the same time, a third bevel gear is installed on the end away from the sub-pan, and its two third bevel gears are respectively meshed with the first bevel gear and the second bevel gear. The two sub-pans, four screw rods and four third bevel gears are all mirrored with the connecting rod as the center.

[0018] Furthermore, a method for detecting the quantity of food for food delivery is provided, wherein the specific operation steps are as follows:

[0019] S1: Start the switch button, then place the food on the upper surface of the scale plate. When the sensor receiving end inside the sensor waterproof cover receives the weight signal, it converts the signal into a digital signal and displays it on the screen;

[0020] S2: The food moves the scale pan downward due to its own gravity. The scale pan is under pressure and pushes the sensor waterproof cover downward. The sensor waterproof cover moves downward to make the reset spring squeeze the pressure plate. At the same time, the reset spring is compressed by the reaction force of the pressure plate.

[0021] S3: The return spring is compressed and moves through the arc strip on the outer side to the opening of the first through hole on the right side of the bottom of the sensor waterproof cover, thereby driving the driving gear to rotate through the gear teeth between the driving gears;

[0022] S4: The driving gear causes the connecting gear to drive the transmission gear to rotate, and the connecting rod rotates with the transmission gear and drives the connecting rod to rotate, and the first bevel gear and the second bevel gear rotate with the connecting rod, so that the first bevel gear and the second bevel gear respectively drive the two third bevel gears to rotate;

[0023] S5: The four screws are meshed with the threads on the inner walls of the four through holes on the adjacent sides of the two sub-pans, so that the four screws rotate and the two sub-pans move backwards, and the two sub-pans move to the outer sides of the weighing pan through the through holes on the left and right sides of the weighing pan, thereby expanding the weighing area of ​​the weighing pan;

[0024] S6: The scale pan moves downward under the action of gravity so that the support rod completely enters the through hole at the bottom of the sensor waterproof cover, so that the scale pan and the sensor waterproof cover are attached to the ground at the same time. The sensor waterproof cover increases stability through the anti-slip pad. The scale pan is attached to the ground to prevent the food with moisture from flowing downward through the edge of the scale pan into the sensor and causing damage to it, thereby completing the measurement of the food weight.

[0025] Beneficial effects:

[0026] 1. The weight of the food causes the force to move downward. During this process, the sensor waterproof cover is subjected to the pressure of the scale pan to weigh the food through the internal sensor. At the same time, the scale pan is subjected to the pressure to push the sensor waterproof cover downward. The sensor waterproof cover moves downward under the gravity and drives the reset spring inside the four through holes to move downward. The reset spring moves downward and is squeezed and compressed by the pressure plate. In the process of the reset spring being squeezed by the pressure, the arc strip set on the outer side of the reset spring moves with the squeezing. The arc strip set on the outer side of the reset spring passes through the opening of the first through hole on the right side of the sensor waterproof cover to rotate the driving gear. At this time, the connecting gear rotates with the driving gear.

[0027] 2. The transmission gear drives the connecting rod to rotate, and the connecting rod drives the first bevel gear and the second bevel gear to rotate at the same time. The first bevel gear and the second bevel gear respectively drive the two third bevel gears to rotate, so that the four third bevel gears drive the four screws to rotate at the same time. The four screws are meshed with the threads of the inner walls of the four through holes on the adjacent side of the two sub-disks, so that the two sub-disks move backwards while the four screws rotate. The two sub-disks move to the outer side through the through holes on the left and right sides of the weighing pan, thereby achieving the purpose of expanding the weighing pan area and improving the efficiency of weighing food.

[0028] 3. During the downward movement of the reset spring, it is squeezed and compressed by the pressure plate, so that the support rod completely enters the bottom through hole of the sensor waterproof cover, so that the anti-slip pad at the bottom of the sensor waterproof cover fits the ground, and the scale pan fits the ground, thereby further improving the stability of the scale pan when weighing food. At the same time, the scale pan fits the ground to prevent the moisture in the food from flowing downward through the edge of the scale pan into the sensor and damaging it. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the waterproof cover of the sensor of the present invention;

[0031] Figure 3 This is a schematic diagram of the through hole structure at the bottom of the waterproof cover of the sensor of the present invention;

[0032] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0033] Figure 5 It is a schematic diagram of the cross-sectional structure of the weighing pan of the present invention;

[0034] Figure 6 This is a schematic diagram of the weighing pan structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the connecting rod structure of the present invention;

[0036] Figure 8 It is a schematic diagram of the auxiliary disk structure of the present invention.

[0037] Figure 1-8 In the figure, the corresponding relationship between the component names and the figure numbers is as follows:

[0038] 1. Four-corner foot pads; 101. Support rod; 102. Reset spring; 103. Pressure plate; 104. Drive gear; 105. Connecting gear; 2. Sensor waterproof cover; 3. Casters; 4. Scale plate; 401. Transmission gear; 402. First bevel gear; 403. Connecting rod; 404. Second bevel gear; 405. Sub-plate; 406. Screw; 407. Third bevel gear; 5. Fastening screws; 6. U-shaped frame; 7. Vertical pole; 8. Handle; 9. Instrument back cover; 10. Switch button; 11. Middle frame; 12. Screen. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] As attached Figure 1 To Attachment Figure 8 As shown:

[0041] Example 1

[0042] A food quantity detection device for food receiving, comprising a screen 12, a middle frame 11 is installed at the bottom of the screen 12, an instrument back shell 9 is installed at the bottom of the middle frame 11, a switch button 10 is installed on the outer side of the instrument back shell 9, a handle 8 is installed at the bottom of the instrument back shell 9, a vertical pole 7 is installed at the bottom of the handle 8, the bottom of the vertical pole 7 is connected to the top of a sensor waterproof cover 2 by a fastening screw 5, a U-shaped frame 6 is installed at the top edge of the sensor waterproof cover 2, a weighing pan 4 is arranged on one side of the top of the sensor waterproof cover 2, a caster 3 is installed on one side of the bottom of the sensor waterproof cover 2, a transmission assembly driven by pressure is arranged at the bottom of the sensor waterproof cover 2, and the transmission assembly comprises a four-corner foot pad 1, a support rod 101, a reset spring 102, a pressure plate 103, a driving gear 104 and a connecting gear 105;

[0043] A support rod 101 is installed on the top of the four-corner foot pad 1, a pressure plate 103 is connected to the top of the support rod 101, a return spring 102 is installed on the top of the pressure plate 103, a driving gear 104 is arranged on one side of the return spring 102, and a connecting gear 105 is arranged on the outer side of the driving gear 104;

[0044] The scale pan 4 and the fastening screws 5 are made of stainless steel, the bottom of the scale pan 4 is concave, and through holes are provided on both sides of the scale pan 4. The bottom of the sensor waterproof cover 2 is provided with an anti-slip pad, and the caster 3 is made of polyurethane.

[0045] Among them, the sensor waterproof cover 2, the sensor waterproof cover 2 has four through holes at the bottom, and the four through holes are all embedded with a reset spring 102, and one side of the first through hole on the right side is open;

[0046] The return spring 102, the outer side surface of the return spring 102 adjacent to the through hole opening at the bottom of the sensor waterproof cover 2 is provided with an arc strip, the height of the arc strip is less than the distance between the teeth of the driving gear 104, and the outer side surface of the driving gear 104 is provided with an auxiliary weighing extension component, and the driving gear 104 is vertically meshed with the connecting gear 105;

[0047] A pressing plate 103, the diameter of which is slightly larger than the outer diameter of the return spring 102 and smaller than the diameter of the through hole at the bottom of the sensor waterproof cover 2;

[0048] The switch button 10 is turned on to place the food on the upper surface of the scale pan 4. The food causes the force to act downward by its own weight. During this process, the sensor waterproof cover 2 is subjected to the pressure of the scale pan 4 to weigh the food through the internal sensor. At the same time, the scale pan 4 is pressed to push the sensor waterproof cover 2 downward. The sensor waterproof cover 2 moves downward under the force of gravity and drives the reset springs 102 in the four through holes to move downward. The reset springs 102 move downward and are squeezed and compressed by the pressure plate 103, so that the support rod 101 completely enters the bottom through hole of the sensor waterproof cover 2, so that the anti-slip pad at the bottom of the sensor waterproof cover 2 fits well. On the ground, and the scale pan 4 is in contact with the ground, thereby further improving the stability of the scale pan 4 when weighing food. At the same time, the scale pan 4 is in contact with the ground to prevent the moisture of the food from flowing downward through the edge of the scale pan 4 and flowing into the sensor, and causing damage to it. In the process of the reset spring 102 being squeezed by pressure, the arc strip arranged on the outer side of the reset spring 102 moves along with the squeezing, and the arc strip arranged on the outer side of the reset spring 102 rotates the driving gear 104 through the opening of the first through hole on the right side of the sensor waterproof cover 2, and at this time, the connecting gear 105 rotates along with the driving gear 104;

[0049] Example 2

[0050] The present embodiment is different from the first embodiment in that: the extension component comprises a transmission gear 401, a first bevel gear 402, a connecting rod 403, a second bevel gear 404, a sub-disk 405, a screw 406 and a third bevel gear 407; a connecting rod 403 is provided at the center of the transmission gear 401; the first bevel gear 402 is installed at one end of the connecting rod 403 close to the transmission gear 401; the second bevel gear 404 is installed at one end of the connecting rod 403 away from the transmission gear 401; the third bevel gear 407 is provided on the outer side of the second bevel gear 404; a screw 406 is installed on one side of the third bevel gear 407; and a sub-disk 405 is provided at one end of the screw 406 away from the third bevel gear 407;

[0051] Among them, the transmission gear 401 is arranged at the left end of the connecting rod 403, and is kept at a distance of eight to ten centimeters from the first bevel gear 402, and the transmission gear 401 is arranged to be vertically meshed with the connecting gear 105;

[0052] A sub-disc 405, the sub-disc 405 is embedded in the bottom of the weighing pan 4, and the sub-disc 405 is matched with the through holes on the left and right sides of the weighing pan 4. Two through holes are provided on the side of the sub-disc 405 close to the connecting rod 403, and threads matching the screw 406 are provided inside the two through holes, and the two through holes are connected to the screw 406 through threads, and the third bevel gear 407 is installed at the end away from the sub-disc 405, and the two third bevel gears 407 are respectively meshed with the first bevel gear 402 and the second bevel gear 404, and the two sub-discs 405, the four screws 406 and the four third bevel gears 407 are all mirror-imaged with the connecting rod 403 as the center;

[0053] After the food is placed on the upper surface of the weighing pan 4 and pressure is applied to the weighing pan 4 to move it downward, the driving gear 104 rotates, and the driving gear 104 rotates to drive the connecting gear 105 to rotate, and the transmission gear 401 follows the connecting gear 105 to rotate, and the transmission gear 401 drives the connecting rod 403 to rotate, and the connecting rod 403 simultaneously drives the first bevel gear 402 and the second bevel gear 404 to rotate, and the first bevel gear 402 and the second bevel gear 404 respectively drive the two third bevel gears 407 to rotate, so that the four third bevel gears 407 simultaneously drive the four screws 406 to rotate, and the four screws 406 are meshed with the threads of the inner walls of the four through holes on the adjacent side of the two sub-disks 405, so that the four screws 406 rotate and the two sub-disks 405 move back to back, and the two sub-disks 405 move to the outer side through the through holes on the left and right sides of the weighing pan 4, thereby achieving the purpose of expanding the area of ​​the weighing pan 4, thereby improving the efficiency of weighing food;

[0054] Example 3

[0055] A method for detecting the quantity of food for food delivery, the specific steps are as follows:

[0056] S1: Start the switch button 10, then put the food on the upper surface of the scale plate 4, when the sensor receiving end inside the sensor waterproof cover 2 receives the weight signal, it converts the signal into a digital signal and displays it on the screen 12;

[0057] S2: The food material moves the scale pan 4 downward due to its own gravity. The scale pan 4 is under pressure and pushes the sensor waterproof cover 2 downward. The sensor waterproof cover 2 moves downward to make the reset spring 102 squeeze the pressure plate 103. At the same time, the reset spring 102 is compressed by the reaction force of the pressure plate 103.

[0058] S3: The return spring 102 is compressed and moves through the arc strip on the outer side to the opening of the first through hole on the right side of the bottom of the sensor waterproof cover 2, thereby driving the driving gear 104 to rotate through the gear teeth between the driving gears 104;

[0059] S4: The driving gear 104 causes the connecting gear 105 to drive the transmission gear 401 to rotate, and the connecting rod 403 simultaneously rotates along with the transmission gear 401 and drives the connecting rod 403 to rotate, and the first bevel gear 402 and the second bevel gear 404 rotate along with the connecting rod 403, so that the first bevel gear 402 and the second bevel gear 404 respectively drive the two third bevel gears 407 to rotate;

[0060] S5: The four screws 406 are meshed with the threads of the inner walls of the four through holes on the adjacent sides of the two sub-disks 405, so that the four screws 406 rotate and the two sub-disks 405 move backwards, and the two sub-disks 405 move to the outer sides through the through holes on the left and right sides of the weighing pan 4, thereby expanding the weighing area of ​​the weighing pan 4;

[0061] S6: The weighing pan 4 moves downward under the action of gravity so that the support rod 101 completely enters the through hole at the bottom of the sensor waterproof cover 2, so that the weighing pan 4 and the sensor waterproof cover 2 are simultaneously attached to the ground. The sensor waterproof cover 2 increases stability through the anti-slip pad. The weighing pan 4 is attached to the ground to prevent the food with moisture from flowing downward through the edge of the weighing pan 4 and flowing into the sensor, thereby damaging it, thereby completing the measurement of the food weight.

[0062] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A food quantity detection device for food receiving, comprising a screen (12), characterized in that: The bottom of the screen (12) is provided with a middle frame (11), the bottom of the middle frame (11) is provided with an instrument rear shell (9), the outer side of the instrument rear shell (9) is provided with a switch button (10), the bottom of the instrument rear shell (9) is provided with a handle (8), the bottom of the handle (8) is provided with a vertical pole (7), the bottom of the vertical pole (7) is connected to the top of the sensor waterproof cover (2) by a fastening screw (5), a U-shaped frame (6) is provided at the top edge of the sensor waterproof cover (2), a weighing pan (4) is provided on one side of the top of the sensor waterproof cover (2), a caster (3) is provided on one side of the bottom of the sensor waterproof cover (2), and a transmission assembly driven by pressure is provided at the bottom of the sensor waterproof cover (2), the transmission assembly comprising four-corner foot pads (1), a support rod (101), a return spring (102), a pressure plate (103), a driving gear (104) and a connecting gear (105); A support rod (101) is installed on the top of the four-corner foot pad (1), a pressure plate (103) is connected to the top of the support rod (101), a return spring (102) is installed on the top of the pressure plate (103), a driving gear (104) is arranged on one side of the return spring (102), and a connecting gear (105) is arranged on the outer side of the driving gear (104); The expansion component comprises a transmission gear (401), a first bevel gear (402), a connecting rod (403), a second bevel gear (404), a sub-disk (405), a screw (406) and a third bevel gear (407); a connecting rod (403) is arranged at the center of the transmission gear (401); the first bevel gear (402) is installed at one end of the connecting rod (403) close to the transmission gear (401); the second bevel gear (404) is installed at one end of the connecting rod (403) away from the transmission gear (401); the third bevel gear (407) is arranged on the outer side surface of the second bevel gear (404); a screw (406) is installed on one side of the third bevel gear (407); and the sub-disk (405) is arranged at one end of the screw (406) away from the third bevel gear (407); The transmission gear (401) is arranged at the left end of the connecting rod (403) and is kept at a distance of eight to ten centimeters from the first bevel gear (402), and the transmission gear (401) is arranged to be vertically meshed with the connecting gear (105); The sub-disc (405) is embedded in the bottom of the weighing pan (4), and the sub-disc (405) and the through holes on the left and right sides of the weighing pan (4) are matched. Two through holes are provided on one side of the sub-disc (405) close to the connecting rod (403). The insides of the two through holes are provided with threads matching the screw rod (406), and the two through holes are connected to the screw rod (406) through threads. At the same time, a third bevel gear (407) is installed at one end away from the sub-disc (405), and the two third bevel gears (407) are respectively meshed with the first bevel gear (402) and the second bevel gear (404). The two sub-discs (405), the four screw rods (406) and the four third bevel gears (407) are all arranged in a mirror image with the connecting rod (403) as the center.

2. The food quantity detection device for food receiving according to claim 1, characterized in that: The weighing pan (4) and the fastening screws (5) are both made of stainless steel. The bottom of the weighing pan (4) is concave, and through holes are provided on both left and right sides of the weighing pan (4). An anti-slip pad is installed at the bottom of the sensor waterproof cover (2), and the casters (3) are made of polyurethane.

3. The food quantity detection device for food receiving according to claim 2, characterized in that: The bottom of the sensor waterproof cover (2) is provided with four through holes, and a return spring (102) is embedded in each of the four through holes, with one side of the first through hole on the right being arranged in an open shape.

4. The food quantity detection device for food receiving according to claim 3, characterized in that: The outer side surface of the reset spring (102) adjacent to the bottom through hole opening of the sensor waterproof cover (2) is provided with an arc strip.

5. The food quantity detection device for food receiving according to claim 4, characterized in that: The height of the arc strip on the outer side of the return spring (102) is less than the distance between the gear teeth of the drive gear (104), and an extension component for auxiliary weighing is provided on the outer side of the drive gear (104), and the drive gear (104) and the connecting gear (105) are arranged in a vertical meshing manner.

6. The food quantity detection device for food receiving according to claim 3, characterized in that: The diameter of the pressing plate (103) is slightly larger than the outer diameter of the return spring (102), and smaller than the diameter of the through hole at the bottom of the sensor waterproof cover (2).

7. A method for detecting the quantity of food for food delivery, characterized in that: According to the food quantity detection device for food receiving according to any one of claims 1 to 6, the specific operation steps are as follows: S1: Activate the switch button (10), then place the food on the upper surface of the scale plate (4), and when the sensor receiving end inside the sensor waterproof cover (2) receives the weight signal, it converts the signal into a digital signal and displays it on the screen (12); S2: The food material causes the scale pan (4) to move downward due to its own gravity. The scale pan (4) is pressed against the pressure and pushes the sensor waterproof cover (2) downward. The sensor waterproof cover (2) moves downward so that the return spring (102) presses the pressure plate (103). At the same time, the return spring (102) is compressed by the reaction force of the pressure plate (103). S3: The return spring (102) is compressed and moves through the arc strip on the outer side to the opening of the first through hole on the right side of the bottom of the sensor waterproof cover (2), thereby driving the driving gear (104) to rotate through the gear teeth between the driving gears (104); S4: the driving gear (104) causes the connecting gear (105) to drive the transmission gear (401) to rotate, and the connecting rod (403) simultaneously rotates following the transmission gear (401) and drives the connecting rod (403) to rotate, and the first bevel gear (402) and the second bevel gear (404) rotate following the connecting rod (403), so that the first bevel gear (402) and the second bevel gear (404) respectively drive the two third bevel gears (407) to rotate; S5: The four screws (406) are meshed with the threads on the inner walls of the four through holes on the adjacent sides of the two sub-disks (405), so that the four screws (406) rotate and simultaneously the two sub-disks (405) move in opposite directions, and the two sub-disks (405) move to the outer side of the weighing pan (4) through the through holes on the left and right sides of the weighing pan (4), thereby expanding the weighing area of ​​the weighing pan (4); S6: The weighing pan (4) moves downward under the action of gravity so that the support rod (101) completely enters the through hole at the bottom of the sensor waterproof cover (2), so that the weighing pan (4) and the sensor waterproof cover (2) are simultaneously attached to the ground, and the sensor waterproof cover (2) is provided with an anti-slip pad to increase stability. The weighing pan (4) is attached to the ground to prevent the food with moisture from flowing downward through the edge of the weighing pan (4) and into the sensor, thereby damaging the sensor, thereby completing the measurement of the food weight.

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