Fruit and vegetable respiration rate measuring device
By setting an adjustable adjustment plate and screw structure in the respiratory chamber of the fruit and vegetable breathing meter, the problem of fixed respiratory chamber volume in the prior art is solved, and the measurement of different fruit and vegetable volumes is realized, reducing costs and simplifying operation.
Patent Information
- Application Number
- CN202421612405.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The respiratory chamber volume of the existing fruit and vegetable breathing instrument is fixed, and cannot adapt to different volumes of fruits and vegetables, resulting in the need to be equipped with multiple respiratory chambers of different specifications, which increases costs and troublesome operation.
A breathing chamber with adjustable volume is designed, and a slidable adjustment of the breathing chamber volume is achieved by providing an adjustment plate that can slide up and down in the cylinder, and the coordination of the adjustment screw and the rotating handle.
It has achieved the measurement of different volumes of fruits and vegetables, reducing manufacturing costs. Each instrument only needs to be equipped with a breathing chamber, making the operation more convenient.
Smart Images
Figure CN222913618U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fruit and vegetable detection, and in particular relates to a device for measuring the respiration rate of fruits and vegetables. Background Art
[0002] As fruit and vegetable crops grow and mature, they are picked and stored in time according to their degree of maturity. The maturity will change according to the storage environment and storage time. When the fruit respiration is at its peak and the amount of ethylene released is the largest, the maturity is the best and the taste and quality of the fruit are the best. How to measure the respiration rate and ethylene release to judge the maturity of the fruit is crucial and has important significance for the study of post-harvest fruit storage.
[0003] In the existing measurement of the respiration rate of fruits and vegetables, a fruit and vegetable respirometer is usually used to measure the respiration rate directly. The volume of the respiration chamber of the existing fruit and vegetable respirometer is fixed. In the actual operation process, it is usually necessary to select a suitable respiration chamber according to the different sizes of fruits and vegetables. Therefore, a fruit and vegetable respirometer often needs to be equipped with multiple respiration chambers of different specifications, which undoubtedly increases the cost. In addition, when measuring different fruits and vegetables, the respiration chamber needs to be replaced, and the operation is more troublesome.
[0004] In view of this, the inventor conducted in-depth research on the above-mentioned defects in the prior art, and thus came up with this case. Utility Model Content
[0005] The utility model aims to provide a device for measuring the respiration rate of fruits and vegetables, which solves the problem in the prior art that the volume of the fruit and vegetable respiration chamber is not adjustable and the respiration chamber needs to be replaced when measuring different fruits and vegetables, resulting in troublesome operation.
[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:
[0007] A device for measuring the respiration rate of fruits and vegetables comprises a photosynthesis meter, a respiration chamber, a sample tube, an air outlet pipe and an analyzer. The sample tube is connected between the photosynthesis meter and the respiration chamber, the air outlet pipe is connected between the respiration chamber and the analyzer, the analyzer and the photosynthesis meter are connected via a cable, the respiration chamber comprises a barrel for placing fruits and vegetables, a sealing cover for sealing the barrel, an adjustment plate slidably mounted in the barrel, and an adjustment screw for driving the adjustment plate to slide up and down along the inner wall of the barrel; a threaded hole threadedly matched with the adjustment screw is formed on the bottom wall of the barrel, the top of the adjustment screw is rotatably connected to the bottom of the adjustment plate, a first connecting tube connected to the sample tube is formed on the top of the sealing cover, and a second connecting tube connected to the air outlet pipe is formed on the bottom of the adjustment plate; a through hole for the air outlet pipe to pass through is also formed on the inner bottom wall of the barrel.
[0008] Furthermore, a sealing ring is sleeved on the outer wall of the adjustment plate, and the sealing ring is slidably matched with the inner wall of the cylinder. By sleeved on the outer wall of the adjustment plate, the sealing ring can increase the air tightness between the adjustment plate and the inner wall of the cylinder, making the measurement more accurate.
[0009] Furthermore, the top of the adjustment plate is formed with an arc-shaped concave surface, and the second connecting tube is close to the edge of the arc-shaped concave surface. The arc-shaped concave surface can make the fruits and vegetables put into the cylinder body as much as possible in the middle of the adjustment plate to prevent the fruits and vegetables from blocking the second connecting tube.
[0010] Furthermore, a rotating handle is formed at the bottom of the adjusting screw rod, which makes it easier to turn the adjusting screw rod and makes it more convenient to use.
[0011] Furthermore, an exhaust port and an exhaust valve for opening and closing the exhaust port are formed on the sealing cover; the exhaust valve includes a knob, a sealing plate and a rotating ring; the knob is located above the sealing cover, the sealing plate is located below the sealing cover, a connecting column is provided between the sealing plate and the knob, the connecting column passes through the exhaust port, and the diameter of the connecting column is smaller than the diameter of the exhaust port; the rotating ring is rotatably connected to the top of the sealing cover, a plurality of guide columns are formed on the top of the rotating ring, a guide hole slidably matched with the guide column is formed on the shell wall of the knob, and a spring is also provided in the guide hole; one end of the spring is fixedly connected to the top of the guide column, and the other end is fixedly connected to the inner top wall of the guide hole; a plurality of protrusions are also formed on the top of the sealing plate, and a plurality of grooves matching with the protrusions are formed on the inner top wall of the sealing cover. When adjusting the internal volume of the cylinder, the exhaust port can be opened through the exhaust valve to facilitate adjustment of the position of the adjustment plate. When measuring, the exhaust port is closed through the exhaust valve to form an enclosed space in the cylinder, thereby increasing the airtightness of the cylinder and improving the accuracy of the measurement.
[0012] Furthermore, the bottom of the cylinder is also formed with supporting feet, which make the cylinder more stable.
[0013] After adopting the above structure, the utility model relates to a fruit and vegetable respiration rate measuring device. Compared with the prior art, the utility model provides an adjustment plate that can slide up and down in the cylinder body, and changes the volume in the cylinder body by adjusting the plate, so as to adapt to fruits and vegetables of different volumes. In this way, each instrument only needs to be equipped with one respiration chamber, which reduces the manufacturing cost, and each time different fruits and vegetables are measured, only the height of the adjustment plate needs to be adjusted, which makes the operation more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;
[0015] Figure 1 It is a structural schematic diagram of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the breathing chamber in the utility model;
[0017] Figure 3 for Figure 2 Schematic cross-sectional view of ;
[0018] Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at center A;
[0019] Figure 5 This is a schematic diagram of the structure of the knob in the utility model
[0020] Figure 6 It is a structural schematic diagram of the rotating ring in the utility model.
[0021] The symbols of the main components are explained as follows: photosynthesis meter 1, breathing chamber 2, cylinder 21, threaded hole 211, through hole 212, supporting foot 213, sealing cover 22, first connecting pipe 221, exhaust port 222, groove 223, adjusting plate 23, second connecting pipe 231, sealing ring 232, arc-shaped concave surface 233, adjusting screw 24, rotating handle 241, sample tube 3, air outlet pipe 4, exhaust valve 5, knob 51, connecting column 511, guide hole 512, sealing plate 52, protrusion 521, rotating ring 53, guide column 531, spring 54, analyzer 6. DETAILED DESCRIPTION
[0022] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that in the drawings or in the specification, similar or identical parts use the same figure numbers, and the implementation methods not shown or described in the drawings are forms known to ordinary technicians in the relevant technical field. In addition, the directional terms mentioned in the embodiments, such as "upper", "lower", "top", "bottom", "left", "right", "front", "back", etc., are only referenced to the directions of the drawings and are not used to limit the scope of protection of the present invention.
[0023] like Figure 1 to Figure 6As shown, a device for measuring the respiration rate of fruits and vegetables involved in the utility model comprises a photosynthesis meter 1, a respiration chamber 2, a sample tube 3, an air outlet pipe 4 and an analyzer 6. The sample tube 3 is connected between the photosynthesis meter 1 and the respiration chamber 2, the air outlet pipe 4 is connected between the respiration chamber 2 and the analyzer 6, and the analyzer 6 and the photosynthesis meter 1 are connected through a cable. Specifically, a sample chamber is provided in the photosynthesis meter 1, and the outside air first enters the sample chamber, then enters the respiration chamber 2 through the sample tube 3, and then enters the analyzer 6 through the air outlet pipe 4 to analyze the gas, and the analysis result is then transmitted to the photosynthesis meter 1 in the form of an electrical signal by the cable for display; the respiration chamber 2 comprises a cylinder 21 for placing fruits and vegetables, and a sealing cover for sealing the cylinder 21. 22. An adjusting plate 23 slidably mounted in the cylinder 21 and an adjusting screw 24 that drives the adjusting plate 23 to slide up and down along the inner wall of the cylinder 21; the sealing cover 22 and the cylinder 21 can be threadedly connected or clamped, and a rubber pad can be provided at the connection position to increase the sealing performance. A threaded hole 211 that is threadedly matched with the adjusting screw 24 is formed on the bottom wall of the cylinder 21. The top of the adjusting screw 24 is rotatably connected to the bottom of the adjusting plate 23. A rotating handle 241 is formed at the bottom of the adjusting screw 24. The rotating handle 241 facilitates the turning of the adjusting screw 24, making it more convenient to use. A supporting foot 213 is also formed at the bottom of the cylinder 21. The supporting foot 213 makes the cylinder 21 more stable and reserves sufficient adjustment space for the adjusting screw 24. The top of the sealing cover 22 is formed with a first connecting tube 221 connected to the sample tube 3, and the bottom of the adjustment plate 23 is formed with a second connecting tube 231 connected to the air outlet pipe 4. In addition, a filter is provided in the second connecting tube 231, through which some impurities and dust on fruits and vegetables can be filtered to prevent them from entering the analyzer 6 through the air outlet pipe 4. The sample tube 3 and the air outlet pipe 4 are both plastic hoses, and are connected to the first connecting tube 221 and the second connecting tube 231 by plugging; a through hole 212 for the air outlet pipe 4 to pass through is also formed on the inner bottom wall of the cylinder 21. In this embodiment, the photosynthesis measuring instrument 1 adopts the LI-6400 photosynthetic instrument, and the leaf chamber of the LI-6400 photosynthetic instrument is replaced by the respiratory chamber 2 in this embodiment, and the overall measurement principle remains unchanged.
[0024] Preferably, a sealing ring 232 is sleeved on the outer wall of the adjustment plate 23, and the sealing ring 232 is slidably matched with the inner wall of the cylinder 21. A card slot is formed on the outer wall of the adjustment plate 23, and the sealing ring 232 is embedded in the card slot to increase the stability of the sealing ring 232 and prevent the sealing ring 232 from falling off when moving up and down; by sleeved on the outer wall of the adjustment plate 23, the sealing ring 232 can increase the airtightness between the adjustment plate 23 and the inner wall of the cylinder 21, so that the measurement is more accurate.
[0025] Preferably, the top of the adjusting plate 23 is formed with an arc-shaped concave surface 233, and the second connecting tube 231 is close to the edge of the arc-shaped concave surface 233. The arc-shaped concave surface 233 can make the fruits and vegetables put into the cylinder 21 as much as possible in the middle of the adjusting plate 23, so as to avoid the fruits and vegetables blocking the second connecting tube 231.
[0026] Preferably, the sealing cover 22 is also formed with an exhaust port 222 and an exhaust valve 5 for opening and closing the exhaust port 222; the exhaust valve 5 includes a knob 51, a sealing plate 52 and a rotating ring 53; the knob 51 is located above the sealing cover 22, the sealing plate 52 is located below the sealing cover 22, a connecting column 511 is provided between the sealing plate 52 and the knob 51, the connecting column 511 passes through the exhaust port 222, and the diameter of the connecting column 511 is smaller than the diameter of the exhaust port 222; the rotating ring 53 is rotatably connected to the sealing cover The top of the rotating ring 53 is formed with a plurality of guide posts 531, the shell wall of the knob 51 is formed with a guide hole 512 which slides with the guide post 531, and a spring 54 is also arranged in the guide hole 512; one end of the spring 54 is formed with a fixed connection to the top of the guide post 531, and the other end is fixedly connected to the inner top wall of the guide hole 512; a plurality of protrusions 521 are also formed on the top of the sealing plate 52, and a plurality of grooves 223 which cooperate with the protrusions 521 are formed on the inner top wall of the sealing cover 22. Since the main parameter when measuring the respiration rate of fruits and vegetables is to measure the concentration of carbon dioxide, when adjusting the adjustment plate 23, the operator should try to avoid the exhaled gas from entering the cylinder 21. Therefore, when adjusting, the sealing cover 22 can be covered on the cylinder 21. When adjusting the internal volume of the cylinder 21, the exhaust port 222 can be opened through the exhaust valve 5 to facilitate the adjustment of the position of the adjustment plate 23. When measuring, the exhaust port 222 is closed through the exhaust valve 5 to form a closed space in the cylinder 21, increase the airtightness in the cylinder 21, and improve the accuracy of the measurement. Specifically, when the exhaust port 222 is opened, First, press the knob 51 downward to separate the protrusion 521 on the sealing plate 52 from the groove 223, then turn the knob 51 to misalign the protrusion 521 with the groove 223, then release the knob 51, and the knob 51 will rebound under the action of the spring 54, but at this time the protrusion 521 is against the bottom of the sealing cover 22, and a gap appears between the sealing plate 52 and the bottom of the sealing cover 22. At this time, the exhaust port 222 is in an open state. To close the exhaust port 222, just turn the knob 51 to re-engage the protrusion 521 in the groove 223, so that the sealing plate 52 fits tightly with the bottom of the sealing cover 22, and the exhaust port 222 can be closed. The overall operation is very convenient.
[0027] The method of using the utility model is as follows: first, the instrument is installed, and then the fruits and vegetables to be tested can be placed in the barrel 21, and the sealing cover 22 and the barrel 21 are covered, and then the exhaust valve 5 is rotated to open the exhaust port 222, and then the adjusting screw 24 can be rotated to adjust the position of the adjusting plate 23 so that the volume in the barrel 21 is adapted to the volume of the fruits and vegetables. After the adjustment is completed, the exhaust valve 5 is rotated again to reset the exhaust valve 5, thereby closing the exhaust port 222, and finally the photosynthesis measuring instrument 1 can be turned on to measure the respiration rate of the fruits and vegetables.
[0028] The above is a detailed introduction to a fruit and vegetable respiration rate measuring device provided by the utility model. The description of the specific embodiment is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.
Claims
1. A device for measuring the respiration rate of fruits and vegetables, comprising a photosynthesis meter (1), a respiration chamber (2), a sample tube (3), an air outlet pipe (4) and an analyzer (6); the sample tube (3) is connected between the photosynthesis meter (1) and the respiration chamber (2), the air outlet pipe (4) is connected between the respiration chamber (2) and the analyzer (6), and the analyzer (6) and the photosynthesis meter (1) are connected via a cable, characterized in that: The breathing chamber (2) comprises a cylinder (21) for placing fruits and vegetables, a sealing cover (22) for sealing the cylinder (21), an adjustment plate (23) slidably mounted in the cylinder (21), and an adjustment screw (24) for driving the adjustment plate (23) to slide up and down along the inner wall of the cylinder (21); a threaded hole (211) threadedly matched with the adjustment screw (24) is formed on the bottom wall of the cylinder (21); the top of the adjustment screw (24) is rotatably connected to the bottom of the adjustment plate (23); a first connecting tube (221) connected to the sample tube (3) is formed on the top of the sealing cover (22); a second connecting tube (231) connected to the air outlet pipe (4) is formed on the bottom of the adjustment plate (23); and a through hole (212) for the air outlet pipe (4) to pass through is also formed on the inner bottom wall of the cylinder (21).
2. A fruit and vegetable respiration rate measuring device according to claim 1, characterized in that: A sealing ring (232) is sleeved on the outer side wall of the adjustment plate (23), and the sealing ring (232) is slidably matched with the inner side wall of the cylinder (21).
3. A fruit and vegetable respiration rate measuring device according to claim 2, characterized in that: A circular arc-shaped concave surface (233) is formed on the top of the adjustment plate (23), and the second connecting pipe (231) is close to the edge of the circular arc-shaped concave surface (233).
4. The device for measuring the respiration rate of fruits and vegetables according to claim 3, characterized in that: A rotating handle (241) is formed at the bottom of the adjusting screw rod (24).
5. The device for measuring the respiration rate of fruits and vegetables according to claim 1, characterized in that: The sealing cover (22) is also provided with an exhaust port (222) and an exhaust valve (5) for opening and closing the exhaust port (222); the exhaust valve (5) comprises a knob (51), a sealing plate (52) and a rotating ring (53); the knob (51) is located above the sealing cover (22), the sealing plate (52) is located below the sealing cover (22), a connecting column (511) is provided between the sealing plate (52) and the knob (51), the connecting column (511) passes through the exhaust port (222), and the diameter of the connecting column (511) is smaller than the diameter of the exhaust port (222); the rotating ring (53) is rotatably connected to the exhaust port (222) A plurality of guide posts (531) are formed at the top of the sealing cover (22) and the top of the rotating ring (53); a guide hole (512) slidably matched with the guide post (531) is formed on the shell wall of the knob (51); a spring (54) is also provided in the guide hole (512); one end of the spring (54) is fixedly connected to the top of the guide post (531), and the other end is fixedly connected to the inner top wall of the guide hole (512); a plurality of protrusions (521) are also formed on the top of the sealing plate (52); a plurality of grooves (223) matched with the protrusions (521) are formed on the inner top wall of the sealing cover (22).
6. The device for measuring the respiration rate of fruits and vegetables according to claim 1, characterized in that: The bottom of the cylinder (21) is also formed with supporting feet (213).