阅读说明：本技术 植物汁液取样检测装置和方法 (Plant juice sampling and detecting device and method ) 是由 侯佩臣 董宏图 张晗 罗斌 周亚男 于 2021-08-16 设计创作，主要内容包括：本发明提供一种植物汁液取样检测装置和方法。其中,植物汁液取样检测装置,包括：收集主体,所述收集主体内具有用于收集植物汁液的内腔,所述收集主体外具有收集孔,所述收集孔连通于所述内腔；收集管,所述收集管包括连接段和辅助段,所述连接段的一端连通于所述内腔,所述辅助段的一端连接与所述连接段；负压装置,所述负压装置与所述辅助段的另一端相连接,以使所述收集管产生负压；收集瓶,所述收集瓶的瓶口连通于所述连接段的另一端,所述收集瓶的瓶口还设有传感器插孔。本发明给出的植物汁液取样检测装置,取样方便快速,节省检测时间,降低检测成本,并且可实时检测,提高检测效率。(The invention provides a plant juice sampling and detecting device and method. Wherein, plant juice sampling test device includes: the collecting body is internally provided with an inner cavity for collecting plant juice and is externally provided with a collecting hole which is communicated with the inner cavity; the collecting pipe comprises a connecting section and an auxiliary section, one end of the connecting section is communicated with the inner cavity, and one end of the auxiliary section is connected with the connecting section; the negative pressure device is connected with the other end of the auxiliary section so as to enable the collecting pipe to generate negative pressure; the collecting bottle, the bottleneck of collecting bottle communicate in the other end of linkage segment, the bottleneck of collecting bottle still is equipped with the sensor jack. The plant juice sampling and detecting device provided by the invention is convenient and quick to sample, saves the detection time, reduces the detection cost, can detect in real time and improves the detection efficiency.)

1. A plant juice sampling and detecting device is characterized by comprising:

the collecting body is internally provided with an inner cavity for collecting plant juice and is externally provided with a collecting hole which is communicated with the inner cavity;

the collecting pipe comprises a connecting section and an auxiliary section, one end of the connecting section is communicated with the inner cavity, and one end of the auxiliary section is connected with the connecting section;

the negative pressure device is connected with the other end of the auxiliary section so as to enable the collecting pipe to generate negative pressure;

the collecting bottle, the bottleneck of collecting bottle communicate in the other end of linkage segment, the bottleneck of collecting bottle still is equipped with the sensor jack.

2. The plant juice sampling and detecting device as claimed in claim 1, wherein the negative pressure device comprises an air bag, one end of the air bag is provided with an air inlet pipe, the other end of the air bag is provided with an air outlet pipe, the air inlet pipe is provided with a first one-way valve which swings towards the air bag, the air outlet pipe is provided with a second one-way valve which swings away from the air bag, and the air inlet pipe is connected with the other end of the auxiliary section.

3. The plant juice sampling and detecting device according to claim 1 or 2, wherein the collecting body comprises a conical head and a handheld portion, the conical head is provided with a thread on the periphery, the collecting hole is located on the thread, the handheld portion comprises a first surface and a second surface which are oppositely arranged, the conical head is provided with a top and a bottom, the bottom of the conical head is wider than the top, the first surface of the handheld portion is connected with the bottom of the conical head, the second surface of the handheld portion is connected with a connecting pipe, the connecting pipe is communicated with the inner cavity, and the connecting pipe is rotatably connected with one end of the connecting section.

4. The device for sampling and detecting the plant juice as claimed in claim 3, wherein the first surface of the hand-held portion is further provided with a leakage-proof ring, the leakage-proof ring is arranged around the conical head, the leakage-proof ring is provided with an abutting surface facing the conical head, and the abutting surface of the leakage-proof ring is arranged obliquely facing the conical head.

5. The device for sampling and testing plant juice according to claim 1 or 2, wherein a liquid collecting tube is arranged at the bottle mouth of the collecting bottle, and the other end of the connecting segment is arranged downwards and inserted into the liquid collecting tube.

6. A plant juice sampling and detecting method, comprising the plant juice sampling and detecting device according to any one of claims 1 to 5; the method comprises the following steps:

sampling plant juice, inserting the collecting main body into a plant, generating negative pressure on the collecting pipe through the negative pressure device, and enabling the plant juice to flow into the inner cavity from the collecting hole and flow into the collecting bottle through the collecting pipe;

and (3) detecting the plant juice, namely inserting a sensor into the collecting bottle from the sensor jack, detecting the content of each component of the plant juice, and recording in real time.

7. The plant juice sampling and detecting method according to claim 6, wherein the negative pressure device comprises an air bag, one end of the air bag is provided with an air inlet pipe, the other end of the air bag is provided with an air outlet pipe, the air inlet pipe is provided with a first one-way valve swinging towards the air bag, the air outlet pipe is provided with a second one-way valve swinging away from the air bag, and the air inlet pipe is connected with the other end of the auxiliary section; in the process of sampling the plant juice, the step of generating negative pressure on the collecting pipe by the negative pressure device comprises the following steps:

compressing the air bag, and discharging gas from the air bag through an air outlet pipe;

the air bag is loosened, the air bag is elastically deformed and recovered, and the gas in the collecting pipe is sucked;

the air bag is compressed circularly and released, so that the collecting pipe generates negative pressure.

8. The method for sampling and testing plant juice according to claim 6, wherein the collecting body comprises a conical head and a handheld portion, the conical head is provided with a thread on the periphery, the collecting hole is located on the thread, the handheld portion comprises a first surface and a second surface which are oppositely arranged, the conical head is provided with a top part and a bottom part, the width of the bottom part of the conical head is larger than that of the top part, the first surface of the handheld portion is connected with the bottom part of the conical head, the second surface of the handheld portion is connected with a connecting pipe, the connecting pipe is communicated with the inner cavity, and the connecting pipe is rotatably connected with one end of the connecting section; said step of inserting said collecting body into the plant during said sampling of the plant juice comprises:

and butting the top of the conical head to the plant, rotating the handheld part and pressing the conical head to enable the conical head to be inserted into the plant in a rotating manner.

9. The method of claim 8, wherein the step of pressing the conical head against the sample includes:

the conical head is pressed against the conical head, so that the leakage-proof ring arranged on the first surface of the handheld part is pressed against the surface of the plant.

10. The method for sampling and detecting plant juice according to claim 6, wherein in the process of sampling the plant juice, after the plant juice content of the collecting bottle reaches the standard, the connecting section is drawn out from the liquid collecting pipe arranged at the opening of the collecting bottle, a new collecting bottle is placed, and the other end of the connecting section is inserted into the liquid collecting pipe of the new collecting bottle.

Technical Field

The invention relates to the technical field of plant juice extraction, in particular to a device and a method for sampling and detecting plant juice.

Background

The plants contain various organic and inorganic substances which are distributed in plant juice, the organic and inorganic substances are substances necessary for plant life activities, and the content and the variation of the substances can influence important biological processes of growth and development, flowering and fructification, senescence and death, response to environmental changes, defense mechanisms and the like of the plants, so that the detection of the content of the organic and inorganic substances is always a result of great attention of plant researchers.

At present, the sampling means for plant materials adopts methods such as picking, cutting, shearing, harvesting and the like, then the pretreatment is carried out, and finally the conventional detection means is adopted to detect organic matters and inorganic matters of plants, and in the prior art, the conventional detection means comprises the following steps: atomic absorption spectrometry, chromatography, mass spectrometry, gas mass spectrometry, liquid mass spectrometry, etc.

The juice obtained by the above-mentioned sampling method destroys the integrity of the plant material itself, even destructively, causing irreversible loss of precious or rare plant material. Moreover, the above sampling method increases the cost, takes a long time, and is inefficient when collecting plant juices.

Disclosure of Invention

The invention provides a plant juice sampling and detecting device and method, which are used for solving the defects of high cost, long time consumption and low efficiency of a sampling method in the prior art and realizing the improvement of the sampling efficiency of plant juice.

The invention provides a plant juice sampling and detecting device, comprising:

the collecting body is internally provided with an inner cavity for collecting plant juice and is externally provided with a collecting hole which is communicated with the inner cavity;

the collecting pipe comprises a connecting section and an auxiliary section, one end of the connecting section is communicated with the inner cavity, and one end of the auxiliary section is connected with the connecting section;

the negative pressure device is connected with the other end of the auxiliary section so as to enable the collecting pipe to generate negative pressure;

the collecting bottle, the bottleneck of collecting bottle communicate in the other end of linkage segment, the bottleneck of collecting bottle still is equipped with the sensor jack.

According to the plant juice sampling and detecting device provided by the invention, the negative pressure device comprises an air bag, one end of the air bag is provided with an air inlet pipe, the other end of the air bag is provided with an air outlet pipe, the air inlet pipe is provided with a first one-way valve swinging towards the air bag, the air outlet pipe is provided with a second one-way valve swinging away from the air bag, and the air inlet pipe is connected with the other end of the auxiliary section.

According to the plant juice sampling and detecting device provided by the invention, the collecting main body comprises a conical head and a handheld part, the periphery of the conical head is annularly provided with a thread, the collecting hole is positioned on the thread, the handheld part comprises a first surface and a second surface which are oppositely arranged, the conical head is provided with a top part and a bottom part, the width of the bottom part of the conical head is larger than that of the top part, the first surface of the handheld part is connected with the bottom part of the conical head, the second surface of the handheld part is connected with a connecting pipe, the connecting pipe is communicated with the inner cavity, and the connecting pipe is rotatably connected with one end of the connecting section.

According to the plant juice sampling and detecting device provided by the invention, the first surface of the handheld part is also provided with the leakage-proof ring, the leakage-proof ring is annularly arranged on the conical head, the leakage-proof ring is provided with an abutting surface facing the conical head, and the abutting surface of the leakage-proof ring is obliquely arranged facing the conical head.

According to the plant juice sampling and detecting device provided by the invention, the liquid collecting pipe is arranged at the bottle mouth of the collecting bottle, and the other end of the connecting section is arranged downwards and inserted into the liquid collecting pipe.

The invention also provides a plant juice sampling and detecting method, which comprises the plant juice sampling and detecting device; the method comprises the following steps:

sampling plant juice, inserting the collecting main body into a plant, generating negative pressure on the collecting pipe through the negative pressure device, and enabling the plant juice to flow into the inner cavity from the collecting hole and flow into the collecting bottle through the collecting pipe;

and (3) detecting the plant juice, namely inserting a sensor into the collecting bottle from the sensor jack, detecting the content of each component of the plant juice, and recording in real time.

According to the plant juice sampling and detecting method provided by the invention, the negative pressure device comprises an air bag, one end of the air bag is provided with an air inlet pipe, the other end of the air bag is provided with an air outlet pipe, the air inlet pipe is provided with a first one-way valve swinging towards the air bag, the air outlet pipe is provided with a second one-way valve swinging away from the air bag, and the air inlet pipe is connected with the other end of the auxiliary section; in the process of sampling the plant juice, the step of generating negative pressure on the collecting pipe by the negative pressure device comprises the following steps:

compressing the air bag, and discharging gas from the air bag through an air outlet pipe;

the air bag is loosened, the air bag is elastically deformed and recovered, and the gas in the collecting pipe is sucked;

the air bag is compressed circularly and released, so that the collecting pipe generates negative pressure.

According to the plant juice sampling and detecting method provided by the invention, the collecting main body comprises a conical head and a handheld part, the periphery of the conical head is annularly provided with a thread, the collecting hole is positioned on the thread, the handheld part comprises a first surface and a second surface which are oppositely arranged, the conical head is provided with a top part and a bottom part, the width of the bottom part of the conical head is larger than that of the top part, the first surface of the handheld part is connected with the bottom part of the conical head, the second surface of the handheld part is connected with a connecting pipe, the connecting pipe is communicated with the inner cavity, and the connecting pipe is rotatably connected with one end of the connecting section; said step of inserting said collecting body into the plant during said sampling of the plant juice comprises:

and butting the top of the conical head to the plant, rotating the handheld part and pressing the conical head to enable the conical head to be inserted into the plant in a rotating manner.

According to the plant juice sampling and detecting method provided by the invention, the step of pressing the conical head comprises the following steps:

the conical head is pressed against the conical head, so that the leakage-proof ring arranged on the first surface of the handheld part is pressed against the surface of the plant.

According to the plant juice sampling and detecting method provided by the invention, in the plant juice sampling process, when the plant juice content of the collecting bottle reaches the standard, the connecting section is extracted from the liquid collecting pipe arranged at the bottle opening of the collecting bottle, a new collecting bottle is placed, and the other end of the connecting section is inserted into the liquid collecting pipe of the new collecting bottle.

According to the plant juice sampling and detecting device and method provided by the invention, the collecting pipe generates negative pressure through the negative pressure device, the collecting main body is inserted into the plant, plant juice is sucked from the collecting hole under the action of the negative pressure of the collecting pipe and flows into the collecting bottle along the connecting section of the inner cavity and the collecting pipe, sampling is realized, and destructive damage or irreversible loss to the plant cannot be caused by a minimally invasive plant juice collecting mode. Compared with the existing sampling mode, the plant juice sampling and detecting device provided by the invention is convenient and quick to sample, saves the detection time, reduces the detection cost, can detect in real time and improves the detection efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a plant juice sampling and detecting device provided by the present invention;

FIG. 2 is a schematic flow chart of the method for sampling and detecting plant juice provided by the present invention;

reference numerals:

10: collecting the main body; 11: a conical head; 111: a thread;

11 a: an inner cavity; 11 b: a collection well; 12: a hand-held portion;

121: a leakage-proof ring; 122: a connecting pipe; 20: a collection pipe;

21: a connecting section; 22: an auxiliary section; 30: a collection bottle;

31: an outer layer of the bottle; 32: an inner layer of the bottle; 33: a liquid collecting pipe;

34: a sensor jack; 40: an air bag; 41: a first check valve;

42: a second one-way valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The plant juice sampling and detecting apparatus and method of the present invention will be described with reference to fig. 1 and 2.

Referring to fig. 1, in one embodiment, the plant juice sampling and detecting device includes:

a collecting body 10, wherein the collecting body 10 comprises a conical head 11, an inner cavity 11a is arranged in the conical head 11, a plurality of collecting holes 11b are arranged on the periphery of the conical head 11, and the plurality of collecting holes 11b are communicated with the inner cavity 11 a;

a collecting pipe 20, wherein the collecting pipe 20 comprises a connecting section 21, and one end of the connecting section 21 is communicated with the inner cavity 11 a;

and the bottle opening of the collecting bottle 30 is communicated with the other end of the connecting section 21.

In the above-described structure, the collecting body 10 is used to be inserted into a plant, and plant juice is sucked through the plurality of collecting holes 11b of the collecting body 10, flowed into the inner chamber 11a, and flowed along the collecting tube 20 into the collecting bottle 30.

Here, the top of the conical head 11 is wider than the bottom, and the conical head 11 can be inserted into the plant along the direction from the top to the bottom to collect the plant juice, in addition, in this embodiment, the inner cavity 11a is a blind hole, and extends along the direction from the top to the bottom of the conical head 11, and the inner cavity 11a is located at the top of the conical head 11 and is closed, the inner cavity 11a is located at the bottom of the conical head 11 and is opened to communicate with the connecting section 21 of the collecting pipe 20, and the plurality of collecting holes 11b penetrate from the outer wall of the conical head 11 to the inner wall of the inner cavity 11a, so that the plant juice can flow to the inner cavity 11 a.

In this embodiment, when the plant juice is sampled, the conical head 11 is inserted into the plant, and the plant juice is sucked through the plurality of collecting holes 11b, so that the plant juice flows to the inner cavity 11a along the plurality of collecting holes 11b, and flows to the collecting bottle 30 through the connecting section 21 of the collecting pipe 20, thereby realizing sampling, and the plant juice is collected in a minimally invasive manner without destructive damage or irreversible loss to the plant. Compared with the existing sampling mode, the plant juice sampling and detecting device provided by the invention is beneficial to entering plant tissues with different hardness, is convenient and rapid to sample, is high in efficiency, reduces the cost, provides a reliable sample for subsequent conventional detection or real-time monitoring of a sensor, and saves the detection time and cost.

Referring to fig. 1, in an embodiment of the present invention, a thread 111 is disposed around the outer circumference of the conical head 11, and a plurality of collecting holes 11b are disposed on the thread 111.

Through the screw thread 111 that the periphery of conical head 11 set up, on the one hand, make things convenient for inserting of conical head 11, on the other hand for conical head 11 that inserts in the plant is difficult for breaking away from, is convenient for the collection of plant juice. Specifically, the thread 111 is spirally wound from the top to the top of the conical head 11, the groove of the thread 111 is a V-shaped groove, and the protrusion of the thread 111 is in a taper shape, so as to facilitate the insertion and sampling of the conical head 11.

In addition, in order to facilitate sampling, the plurality of collecting holes 11b are uniformly arranged on the thread 111 at intervals along the extending coiling direction of the thread 111, and the collecting holes 11b are positioned on the surface of the thread 111 departing from the bottom of the conical head 11, so that when the conical head 11 is inserted, plant juice can flow into the collecting holes 11b more easily, and the collecting efficiency is improved.

Referring to fig. 1, in addition, a mesh-shaped filtering membrane is disposed inside the inner cavity 11 a.

That is, a mesh-shaped filtering membrane having a small hole is provided on the inner wall of the inner chamber 11a, so that the plant juice flowing into the inner chamber 11a from the collecting hole 11b can be filtered to prevent impurities from entering the inner chamber 11a, and substances interfering with the sensor can be removed by intercepting substances having different molecular weights according to the size of the small hole, thereby ensuring the accuracy of detection. Of course, in other embodiments, the filtering may also be achieved directly by sizing the collection holes 11 b.

Referring to fig. 1, in an embodiment of the present invention, the collecting body 10 further includes a handheld portion 12, the handheld portion 12 includes a first surface and a second surface which are oppositely disposed, the conical head 11 has a top and a bottom, the bottom of the conical head 11 has a width larger than that of the top, the first surface of the handheld portion 12 is connected to the bottom of the conical head 11, the second surface of the handheld portion 12 is connected to a connecting pipe 122, the connecting pipe 122 is connected to the inner cavity 11a, and the connecting pipe 122 is connected to one end of the connecting section 21.

The handle 12 has a through hole extending from the first surface to the second surface for communicating the connecting tube 122 with the inner cavity 11a, and the connecting tube 122 can connect the inner cavity 11a with the collecting tube 20. In this embodiment, a handle 12 is provided to facilitate the operator to hold the collecting body 10 to insert the conical head 11 into the plant.

Further, the connection pipe 122 is inserted into one end of the connection end, and the connection pipe 122 is rotatably connected to the connection section 21.

Connecting pipe 122 is connected with linkage segment 21 rotation, namely, this collection main part 10 can rotate for connecting pipe 122, like this, when inserting conical head 11 to the plant in, can take the rotatory collection main part 10 of holding portion 12 to press conical head 11, change the collection of plant juice, convenient to use. And, the efficiency and convenience of inserting the conical head 11 into the plant are further improved in combination with the aforementioned structure of the thread 111 provided on the outer circumference of the conical head 11.

Specifically, in order to realize the above-mentioned rotational connection, in an embodiment, a limiting portion is convexly disposed on an outer periphery of an end portion of the connecting tube 122 far away from the handheld portion 12, a limiting ring is disposed inside one end of the connecting section 21, the connecting tube 122 is inserted into one end of the connecting section 21, and the limiting portion is disposed in the limiting ring.

In this way, the rotational connection of the connection pipe 122 with the connection section 21 can be achieved, and the connection pipe 122 can be prevented from being detached from the connection section 21.

In addition, the outer circumference of the hand-held part 12 is provided with concave-convex stripes arranged at intervals.

Can improve the frictional force of handheld portion 12 through the concave-convex stripe of handheld portion 12 periphery, conveniently hold or rotate the operation such as, of course, in other embodiments, also can set up other friction-increasing structures in handheld portion 12 periphery, and the no longer repeated description here.

Referring to fig. 1, in an embodiment of the present invention, a leakage-proof ring 121 is further disposed on the first surface of the handle 12, and the leakage-proof ring 121 is disposed around the cone 11.

In the process of sampling the plant juice, the leakage-proof ring 121 can prevent the liquid from leaking from the periphery, and the plant juice sampling of the conical head 11 is convenient.

Specifically, the leakage preventing ring 121 has an abutting surface facing the tapered head 11, and the abutting surface of the leakage preventing ring 121 is arranged obliquely toward the tapered head 11.

Like this, be more difficult for plant juice to spill, guarantee the sample effect of plant juice.

In this embodiment, the leakage-proof ring 121 is made of silicon rubber, so that the leakage-proof ring 121 can be stably attached to the surface of the plant, and the leakage-proof ring 121 is larger than the handheld portion 12 in the radial direction, so as to improve the leakage-proof effect.

Referring to fig. 1, in an embodiment of the present invention, a liquid collecting tube 33 is disposed at a bottle mouth of the collecting bottle 30, and the other end of the connecting section 21 is disposed downward and inserted into the liquid collecting tube 33.

Through setting up collector tube 33 to collecting bottle 30 can take off the change at any time, and is more convenient.

In this embodiment, the connection section 21 includes a suction section and an inflow section connected with each other, the inflow section is disposed downward so that the plant juice flows into the collection bottle 30, the suction section is used for sucking the plant juice and making the plant juice flow to the inflow section, and in this embodiment, the suction section may be disposed horizontally or obliquely upward so that the plant juice is sucked.

Referring to fig. 1, in addition, in an embodiment of the present invention, the collection bottle 30 includes an outer bottle layer 31 and an inner bottle layer 32, the inner bottle layer 32 is located inside the outer bottle layer 31, and the bottom of the inner bottle layer 32 is tapered.

Can guarantee the stable support of collecting bottle 30 through outer 31 of bottle, conveniently place, can make the plant juice degree of depth of inflow increase through the toper shape of bottle inlayer 32 bottom, and can furthest collect juice to subsequent detection to plant juice. And, be the vacuum structure between bottle outer 31 and the bottle inlayer 32 to be used for keeping the temperature of plant juice, improve the accuracy of follow-up detection.

Further, the bottle outer layer 31 and the bottle inner layer 32 are transparent.

Therefore, the plant juice in the bottle can be visually observed, and the collection and detection of the plant juice are facilitated.

Referring to fig. 1, in an embodiment of the present invention, the apparatus for sampling and detecting plant juice includes:

a collecting body 10, wherein the collecting body 10 is internally provided with an inner cavity 11a for collecting plant juice, the collecting body 10 is externally provided with a collecting hole 11b, and the collecting hole 11b is communicated with the inner cavity 11 a;

the collecting pipe 20 comprises a connecting section 21 and an auxiliary section 22, one end of the connecting section 21 is communicated with the inner cavity 11a, and one end of the auxiliary section 22 is connected with the connecting section 21;

a negative pressure device connected to the other end of the auxiliary section 22 to generate negative pressure in the collecting pipe 20;

and the bottle opening of the collecting bottle 30 is communicated with the other end of the connecting section 21, and a sensor insertion hole 34 is further formed in the bottle opening of the collecting bottle 30.

Here, the collecting body 10 may be a rod having a tip end so as to be inserted into the plant, in addition to the structure of the tapered head 11.

The negative pressure device is a device capable of generating negative pressure in the collecting pipe 20, and particularly, referring to the embodiment described later, the collecting pipe 20 generates negative pressure, so that the plant juice can be easily sucked by the collecting main body 10, and the sampling efficiency is improved.

In addition, a sensor receptacle 34 provided in the mouth of the collection bottle 30 can be used as an insertion sensor for real-time detection of the substance to be detected.

In this embodiment, the collecting pipe 20 generates negative pressure by the negative pressure device, and is inserted into the plant through the collecting main body 10, under the negative pressure of the collecting pipe 20, the plant juice is sucked from the collecting hole 11b and flows into the collecting bottle 30 along the connecting section 21 of the inner cavity 11a and the collecting pipe 20, so as to realize sampling, and the plant juice is collected in a minimally invasive manner without destructive damage or irreversible loss to the plant. Compared with the existing sampling mode, the plant juice sampling and detecting device provided by the invention is convenient and quick to sample, saves the detection time, reduces the detection cost, can detect in real time and improves the detection efficiency.

Referring to fig. 1, in an embodiment of the present invention, the negative pressure device includes an air bag 40, an air inlet pipe is disposed at one end of the air bag 40, an air outlet pipe is disposed at the other end of the air bag 40, a first check valve 41 swinging towards the air bag 40 is disposed at the air inlet pipe, a second check valve 42 swinging away from the air bag 40 is disposed at the air outlet pipe, and the air inlet pipe is connected to the other end of the auxiliary section 22.

Thus, by compressing the bladder 40, gas is sucked into and removed from the collection tube 20, and the collection tube 20 is brought into a negative pressure state. Of course, in other embodiments, the auxiliary tube may also be connected to other pumping structures to achieve vacuum, which is not described herein again.

In addition, in combination with the above-mentioned connection section 21 comprising the suction section and the inflow section connected, the auxiliary section 22 is connected to a position between the suction section and the inflow end, and the auxiliary end is disposed downward to connect and connect the section 21, so as to ensure that the plant juice can be smoothly sucked from the collection body 10 and flows into the collection bottle 30, and at the same time, the suck-back condition is not easily generated, and the one-way flow of the plant juice is ensured.

In addition, the inner wall of the inner cavity 11a is provided with the reticular filter membrane, so that substances interfering with the sensor can be removed, the detection accuracy is ensured, and meanwhile, the sampling efficiency is improved.

In an embodiment of the present invention, the structure of the collecting main body 10 can refer to the above description, and is not described herein again.

In addition, the plant juice sampling and detecting device is provided with a liquid collecting pipe 33 at the bottle mouth of the collecting bottle 30, and the other end of the connecting section 21 is arranged downwards and inserted into the liquid collecting pipe 33.

Specifically, a first bottle cap is arranged at the bottle mouth of the collecting bottle 30, the bottle cap is connected with the bottle mouth thread 111 of the collecting bottle 30, the liquid collecting pipe 33 and the sensor inserting hole 34 are vertically arranged on the first bottle cap in a penetrating mode to be used for the connection section 21 and the sensor to be inserted, a second bottle cap is further provided, the second bottle cap is a sealing cap body, after the plant juice is collected, the collecting bottle 30 can be taken down, the first bottle cap is taken down, the second bottle cap is used for achieving sealing storage, and the first bottle cap can be replaced by a new collecting bottle 30 to continue to collect the plant juice and achieve real-time detection.

Referring to fig. 2, based on the above sampling and detecting structure for plant juice, the present invention further provides a method for sampling and detecting plant juice, comprising the following steps:

sampling plant juice, inserting the collecting body 10 into a plant, generating negative pressure on the collecting pipe 20 through the negative pressure device, and enabling the plant juice to flow into the inner cavity 11a from the collecting hole 11b and flow into the collecting bottle 30 through the collecting pipe 20;

and (3) detecting the plant juice, inserting a sensor into the collection bottle 30 from the sensor jack 34, detecting the content of each component of the plant juice, and recording the content in real time.

In the above embodiment, when the substance content is detected by the sensor, the detection may be performed at intervals or may be performed continuously, as necessary.

Like this, collect plant juice mode through the wicresoft can not cause devastating destruction or irreversible loss to the plant to, produce through negative pressure device and make collecting pipe 20 produce the negative pressure, improve the efficiency of plant sample, reduce the sample cost, and, can directly detect through the sensor and obtain the material content, remove pretreatment process and complicated detection procedure from, practiced thrift measuring time, guarantee the activity of material, the data that record simultaneously also more are close accurate data.

Specifically, the step of generating the negative pressure in the collecting pipe 20 by the negative pressure device during the sampling of the plant juice includes:

compressing the air bag 40, and discharging gas from the air bag 40 through an air outlet pipe;

the air bag 40 is released, the air bag 40 is elastically deformed and restored, and the gas in the collecting pipe 20 is sucked;

the cycle compresses the air bag 40 and releases the air bag 40, so that the collecting pipe 20 generates negative pressure.

The plant juice is obtained by a manual auxiliary air-suction method, so that a reliable sample is provided for subsequent conventional detection or real-time monitoring of a sensor, the detection time and cost are saved, the activity of a substance to be detected is kept, and the processes of volatilization, degradation, oxidation and the like of the substance to be detected are avoided.

In addition, the step of inserting the collecting body 10 into the plant during the sampling of the plant juice comprises:

butting the top of the conical head 11 to a plant, rotating the handheld part 12 and pressing the conical head 11 to enable the conical head 11 to be inserted into the plant in a rotating mode.

Thus, the operator can insert the collecting body 10 into the plant quickly and conveniently, and the sampling efficiency is improved.

Further, the step of pressing the conical head 11 includes:

the conical head 11 is pressed, so that the leakage-proof ring 121 arranged on the first surface of the handheld part 12 is pressed against the surface of the plant.

In this way, leakage of juice from around the handle 12 is avoided, improving the sampling effect.

According to the structure and method, the invention provides a specific embodiment:

the device is used for detecting the content change of fructose in the red Fuji apple fruits on trees and exploring the contribution of the fructose in the sugar accumulation of the apple fruits. The main parameters of the device are as follows, the maximum diameter of the conical head 11 is 8mm, the length is 15mm, the diameter of the collecting hole 11b of the conical head 11 is 0.5mm, the diameter of the inner cavity 11a is 2mm, the length is 30mm, the volume of the inner space of the collecting bottle 30 is 5ml, and the volume of the air bag 40 is more than 5 ml. The conical head 11 is inserted into the apple fruits through the rotation of the handheld part 12, apple juice is collected for 5-10 minutes at noon and noon of a sunny day, an external fructose sensor is inserted into the sensor insertion hole 34 to deeply penetrate into the bottom of the collecting bottle 30 to detect the fructose content each time, the fructose content ranges of the two collection schemes are 14-15% at noon of a sunny day, 11-12% at noon of a rainy day and the highest fructose content at noon of a sunny day is strongly related to photosynthesis at noon of a sunny day, and the photosynthesis is weakened due to the fact that the sun is covered by a cloud layer at noon of a rainy day, so that the sugar content of the apple fruits is reduced, and the fact that the fructose in the apple fruits is diluted due to sufficient rainwater supply at the root is also an important reason for reducing the sugar content.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.