Acquisition probe for mildew detection of tobacco raw materials

Abstract

The utility model discloses an acquisition probe for tobacco raw material mildew detection, which relates to the field of tobacco raw material index detection, and has the main design concept that the acquisition probe comprises a detection needle tube and a detection needle head connected to one end of the detection needle tube, one end, far away from the detection needle head, of the detection needle tube is connected with a mass spectrometer gas circuit, one end, close to the mass spectrometer, of the detection needle tube is connected with a positive pressure gas supply source through a purging pipeline, a valve used for opening and closing the purging pipeline is arranged on the purging pipeline, and a pneumatic diad can be further configured. According to the utility model, the problems that the sampling probe is easily influenced by volatile impurities and is easily blocked can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco raw material index detection, in particular to a collection probe used for tobacco raw material mildew detection. Background Art

[0002] Mildew detection is the focus of mildew prevention and control in the tobacco industry. For the tobacco industry, raw materials are the core assets of enterprise development. When conducting mildew detection, the collection probe of the mass spectrometer can be used to perform vacuum suction sampling at the tobacco raw material storage site to capture the volatile gases of the aged tobacco leaves in the warehouse. By analyzing the mildew markers of the volatile gases, effective judgment of tobacco leaf mildew can be achieved. However, the use of traditional sampling probes has at least the following problems:

[0003] 1. When the probe inhales gas, the hole will be blocked, affecting the measurement accuracy;

[0004] Since the probe is inserted into the cigarette box (cigarette pack) by "puncturing" to collect volatile gases from the tobacco leaves in the box, which are solid tobacco leaves, the probe holes are often clogged after the test, making it impossible to test the next box of tobacco leaves for mold.

[0005] 2. The probe is easily affected by "impurities", which affects the accuracy of measurement;

[0006] Because during the inspection of cigarette boxes, sampling inspection is carried out in the form of sampling from different cargo locations, and different cargo locations store raw materials of different origins, grades, and parts. If there are tobacco leaves left from the previous cigarette box inside the probe, it will be regarded as "impurity" when the next cigarette box is inspected. Once there are impurities in the probe, it will directly affect the accuracy of the measurement. Utility Model Content

[0007] In view of the above, the present invention aims to provide a collection probe for tobacco raw material mildew detection to solve the above-mentioned technical problems.

[0008] The technical solution adopted by the utility model is as follows:

[0009] The utility model provides a collection probe for tobacco raw material mildew detection, comprising a detection needle tube and a detection needle head connected to one end of the detection needle tube, wherein the end of the detection needle tube away from the detection needle head is connected to the gas path of a mass spectrometer, wherein the end of the detection needle tube close to the mass spectrometer is connected to a positive pressure gas supply source through a purge pipeline, and a valve is provided on the purge pipeline for opening and closing the purge pipeline.

[0010] In at least one possible implementation manner, the valve includes a solenoid valve or a manual switch valve.

[0011] In at least one possible implementation, the positive pressure air supply source is a compressed air storage tank.

[0012] In at least one possible implementation, a pneumatic doublet is further provided on the purge pipeline between the valve and the positive pressure air supply source.

[0013] In at least one possible implementation manner, the detection needle tube is connected to the detection needle head via a detachable structure.

[0014] In at least one possible implementation manner, a filter screen is further provided between the detection needle and the detection needle tube.

[0015] In at least one possible implementation, the detection needle includes a puncture sleeve, a sampling tube with a plurality of through holes, a hollow slide rod, and an adapter connected to the detection needle tube, which are connected in sequence, wherein a sliding sleeve is movably connected to the hollow slide rod.

[0016] In at least one possible implementation manner, two ends of the sampling tube are detachably connected to the puncture sleeve and the hollow sliding rod, respectively.

[0017] Compared with the prior art, the main design concept of the utility model is that it includes a detection needle tube and a detection needle connected to one end of the detection needle tube, the end of the detection needle tube away from the detection needle is connected to the mass spectrometer gas path, wherein the end of the detection needle tube close to the mass spectrometer is connected to a positive pressure gas supply source through a purge pipeline, and a valve for opening and closing the purge pipeline is provided on the purge pipeline, and a pneumatic double body can be further configured. The utility model can effectively solve the problem that the sampling probe is easily affected by volatile impurities and easily blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described below in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic diagram of a collection probe for tobacco raw material mildew detection provided by an embodiment of the utility model;

[0020] Figure 2 A schematic diagram of an explosion of a detection needle provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0022] The utility model proposes an embodiment of a collection probe for tobacco raw material mildew detection, specifically, Figure 1 As shown, it includes a detection needle tube 1 and a detection needle head 2 connected to one end of the detection needle tube 1, and the end of the detection needle tube 1 away from the detection needle head 2 is connected to the mass spectrometer gas path, wherein the end of the detection needle tube 1 close to the mass spectrometer is connected to a positive pressure gas supply source 3 through a purge pipeline, and a valve 4 is provided on the purge pipeline for opening and closing the purge pipeline. Two points need to be pointed out. First, the valve 4 can be but is not limited to using a solenoid valve (a manual switch valve can also be used in other schemes). When a solenoid valve is used, the electrical signal that controls the solenoid valve can be associated with the original electronic control system of the mass spectrometer (such as PLC). For example, a physical button is provided to enable the original electronic control system to output the electrical signal that drives the solenoid valve through a cable. This is a mature and conventional electrical technology for those skilled in the art and will not be elaborated here. Of course, it can be further pointed out that in order to avoid conflict with the negative pressure of the vacuum suction function of the mass spectrometer, the solenoid valve opening and closing signal and the original suction sampling opening and closing signal can form an alternative mechanism through an interlocking circuit. Specifically, in terms of hardware implementation, after pressing the purge button to open the purge pipeline, the vacuum suction button automatically pops up to disable the sampling function. Continuing from the above, secondly, the positive pressure gas supply source 3 can be understood to provide clean gas, preferably set as a relatively small compressed air storage tank, and can be detachably connected to the purge pipeline to facilitate the replenishment or replacement of positive pressure clean gas; or, it can be considered to provide power for the purge function by connecting a booster device. On the basis of the above embodiments, in some preferred embodiments of the utility model, a pneumatic double body 5 is further provided on the purge pipeline between the valve 4 and the positive pressure gas supply source 3, further providing the dual functions of pressure regulation and filtration. On the basis of the above, the purge-related components provided by the utility model can be considered to be integrated with the mass spectrometer sampling machine, or can be considered as a separate additional configuration.

[0023] By setting a positive pressure air supply source and a valve, the probe needle and / or the detection needle tube can be blown clean before and after extracting the gas sample to be tested, and the volatile residual leakage (such as fine cigarette dust, particles, etc.) in the detection needle and the detection needle tube can be "back-blown" out through the through hole on the detection needle, thereby effectively improving the detection accuracy. At the same time, the entire probe or through hole can be unblocked in time to avoid being blocked by impurities, thereby ensuring the continuous normal use of the probe.

[0024] Based on the above embodiments, the present invention further proposes in some expansion schemes that a detachable structure design can be adopted between the detection needle tube 1 and the detection needle 2. In this way, in addition to the backwash cleaning method, the detection needle 2 can be conveniently maintained by disassembly in daily use as needed. Therefore, a filter net can be further provided between the detection needle 2 and the detection needle tube 1, and the replacement and maintenance of the filter net can be achieved through the aforementioned detachable structure.

[0025] In addition, combined Figure 2 As for the exploded diagram, the utility model proposes in other expansion schemes that the detection needle 2 can specifically include a puncture sleeve 21 connected in sequence, a sampling tube 22 with a plurality of through holes (preferably, the plurality of through holes are evenly spaced around the circumference), a hollow slide rod 23 and an adapter 24 connected to the detection needle tube 1, wherein a sliding sleeve 25 is movably connected to the hollow slide rod 23.

[0026] In actual operation, the two ends of the sampling tube 22 are detachably connected to the puncture sleeve 21 and the hollow slide rod 23 (that is, the sampling tube 22 can be removed separately and cleaned separately), and the sliding sleeve 25 is movably sleeved on the outside of the hollow slide rod 23. In this way, when the probe is pulled out of the smoke box during the actual detection process, the sliding sleeve 25 can form a relative sealing effect on the sampling tube 22, thereby further reducing the probability of the sampling through hole of the sampling tube 22 being blocked by the fine powder of the raw material.

[0027] Finally, it can be supplemented but not limited to that the piercing sleeve 21 can adopt a semi-enclosed design, and when the probe pierces the cigarette box, it can avoid the through hole on the sampling tube 22 from directly contacting the tobacco leaf raw material.

[0028] In summary, the main design concept of the utility model is that it includes a detection needle tube and a detection needle connected to one end of the detection needle tube, wherein the end of the detection needle tube away from the detection needle is connected to the mass spectrometer gas path, wherein the end of the detection needle tube close to the mass spectrometer is connected to a positive pressure gas supply source through a purge pipeline, and a valve for opening and closing the purge pipeline is provided on the purge pipeline, and a pneumatic double body can be further configured. The utility model can effectively solve the problem that the sampling probe is easily affected by volatile impurities and easily blocked.

[0029] If the expressions of orientation are mentioned in the embodiments of the present invention, they are relative concepts based on the embodiments. In addition, "at least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent the existence of A alone, the existence of A and B at the same time, and the existence of B alone. Among them, A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and c can be represented by: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b, c can be single or multiple.

[0030] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings, but the above is only a preferred embodiment of the present invention. It should be noted that the technical features involved in the above embodiments and their preferred methods can be reasonably combined and matched into a variety of equivalent schemes by those skilled in the art without departing from or changing the design concept and technical effects of the present invention; therefore, the present invention is not limited to the scope of implementation as shown in the drawings, and all changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the specification and drawings, should be within the protection scope of the present invention.

Claims

1. A collection probe for tobacco raw material mildew detection, comprising a detection needle tube and a detection needle head connected to one end of the detection needle tube, wherein the end of the detection needle tube away from the detection needle head is connected to the gas path of a mass spectrometer, characterized in that: One end of the detection needle tube close to the mass spectrometer is connected to a positive pressure gas supply source through a purge pipeline, and a valve is provided on the purge pipeline for opening and closing the purge pipeline.

2. The collection probe for tobacco raw material mildew detection according to claim 1, characterized in that: The valve includes a solenoid valve or a manual switch valve.

3. The collection probe for tobacco raw material mildew detection according to claim 1, characterized in that: The positive pressure air supply source is a compressed air storage tank.

4. The collection probe for tobacco raw material mildew detection according to claim 1, characterized in that: A pneumatic doublet is also provided on the purge pipeline between the valve and the positive pressure air supply source.

5. The collection probe for tobacco raw material mildew detection according to claim 1, characterized in that: The detection needle tube is connected to the detection needle head via a detachable structure.

6. The collection probe for tobacco raw material mildew detection according to claim 5, characterized in that: A filter screen is also provided between the detection needle head and the detection needle tube.

7. The collection probe for tobacco raw material mildew detection according to any one of claims 1 to 6, characterized in that: The detection needle head comprises a puncture sleeve head, a sampling tube with a plurality of through holes arranged around the circumference, a hollow slide rod and an adapter connected to the detection needle tube, which are connected in sequence, wherein a slide sleeve is movably connected to the hollow slide rod.

8. The collection probe for tobacco raw material mildew detection according to claim 7, characterized in that: The two ends of the sampling tube are detachably connected to the puncture sleeve and the hollow sliding rod respectively.

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