Liquid adding device

Abstract

The utility model discloses a liquid adding device, and relates to the technical field of food safety detection, the liquid adding device comprises a liquid dispenser and a liquid adding needle tube, the liquid dispenser is provided with a liquid inlet tube and a liquid outlet tube communicated with the liquid inlet tube, the liquid dispenser is used for being installed in a storage bottle in which cleaning liquid is stored, and the liquid adding needle tube is arranged in the storage bottle. The liquid inlet pipe is used for extending into the storage bottle; the liquid adding needle tube is communicated with the liquid outlet tube of the liquid separator, the liquid adding needle tube comprises a needle head part, and the needle head part is used for penetrating into a sample needle cleaning bottle. According to the technical scheme, when the liquid adding device is used, a cover of the sample needle cleaning bottle does not need to be opened, a cover of the storage bottle does not need to be opened either, and the liquid adding device is rapid, simple and environmentally friendly to operate.

Description

TECHNICAL FIELD

[0001] The utility model relates to food safety detection technical field, especially relate to a liquid adding device. BACKGROUND

[0002] Food safety detection standard all need to use gas chromatogram class large -scale instrument, gas chromatogram class instrument includes carrier gas system, sampling system, chromatographic column and column temperature, detection system, recording system etc. Among them, the sampling needle required by the sampling system is an indispensable tool in gas chromatography analysis, which is specially used to introduce the sample into the detection system for analysis to support the analysis requirement of complex sample, in order to avoid cross infection, the sampling needle is automatically washed in the cleaning bottle before and after use. But the common sampling needle cleaning bottle capacity is only 5ml at most, the traditional liquid adding operation needs to open the storage bottle cap manually and then add liquid, and this mode has three major shortcomings: first, the uncapping and liquid adding process is easy to cause liquid leakage or overflow, causing cleaning liquid waste, second, the commonly used cleaning liquid is toxic and harmful organic reagent, and the uncapping and liquid adding process undoubtedly causes the risk of volatile gas inhalation to the operator, third, the uncapping and capping process is time-consuming and laborious, and cannot realize quick and simple operation. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the utility model is to provide a liquid adding device, which is quick, simple and environmentally friendly.

[0004] To achieve the above purpose, the utility model provides a liquid adding device, which comprises:

[0005] A liquid distributor has a liquid inlet pipe and a liquid outlet pipe in communication with the liquid inlet pipe, the liquid distributor is used to be installed in a storage bottle storing cleaning liquid, and the liquid inlet pipe is used to be inserted into the inside of the storage bottle, and

[0006] A liquid adding needle pipe is in communication with the liquid outlet pipe of the liquid distributor, the liquid adding needle pipe comprises a needle head part, and the needle head part is used to be inserted into the inside of a sample needle cleaning bottle.

[0007] In an embodiment, the liquid adding needle pipe further comprises a sleeve and a detachable structure, the sleeve is detachably connected with the liquid outlet pipe through the detachable structure, and the sleeve is in communication with the liquid outlet pipe and the needle head part.

[0008] In an embodiment, the detachable structure comprises a protrusion and a positioning groove separately arranged on the outer wall of the liquid outlet pipe and the inner wall of the sleeve, and the protrusion and the positioning groove are in clamping cooperation.

[0009] In an embodiment, at least one of the protrusion and the positioning groove is provided with a plurality of annularly distributed protrusions.

[0010] In an embodiment, the protruding block is arranged in a hemispherical shape, and the positioning groove is correspondingly arranged in a hemispherical shape.

[0011] In an embodiment, the protruding block is arranged on the outer wall of the liquid outlet pipe, and the positioning groove is arranged on the inner wall of the sleeve.

[0012] The inner diameter of the sleeve at the end away from the needle head is arranged in an increasing manner.

[0013] In an embodiment, the needle head is arranged to be movable in the up-down direction relative to the sleeve.

[0014] In an embodiment, the liquid adding needle tube further comprises a flexible connecting pipe, which connects the sleeve and the needle head, so that the needle head is arranged to be movable in the up-down direction relative to the sleeve.

[0015] In an embodiment, the liquid adding device further comprises a plugging structure, which comprises a plugging cover used to plug the liquid outlet pipe when the sleeve and the liquid outlet pipe are detached.

[0016] In an embodiment, the plugging structure further comprises a connecting belt, one end of which is fixed to the liquid distributor, and the other end of which is fixed to the plugging cover.

[0017] In the technical scheme of the utility model, the liquid distributor has a liquid inlet pipe and a liquid outlet pipe in communication with the liquid inlet pipe, the liquid distributor is used to be installed on a storage bottle storing cleaning liquid, the liquid inlet pipe is used to be inserted into the inside of the storage bottle, the liquid adding needle tube is in communication with the liquid outlet pipe of the liquid distributor, and the liquid adding needle tube comprises a needle head used to be inserted into the inside of a sample needle cleaning bottle; in this way, when the liquid adding device is used, the liquid inlet pipe is inserted into the inside of the storage bottle by installing the liquid distributor on the storage bottle, and when the liquid is distributed, the needle head of the liquid adding needle tube is inserted into the inside of the sample needle cleaning bottle from the cover of the sample needle cleaning bottle, so that the cleaning liquid in the storage bottle can be sucked in through the liquid inlet pipe of the liquid distributor, and the cleaning liquid enters the inside of the sample needle cleaning bottle along the liquid outlet pipe and the liquid adding needle tube, so that the liquid adding is completed, the cover of the sample needle cleaning bottle does not need to be opened, the cover of the storage bottle does not need to be opened, and the operation is quick, simple and environment-friendly. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description can only be some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0019] Figure 1 Structure schematic view of one embodiment of the liquid adding device provided by the utility model;

[0020] Figure 2 For Figure 1 Structure schematic view of the liquid adding needle tube;

[0021] Figure 3 For Figure 1 Structure schematic view of the sectional structure of the liquid outlet pipe and the sleeve.

[0022] Explanation of reference numerals:

[0023] 100, liquid adding device; 1, liquid distributor; 11, liquid outlet pipe; 2, liquid adding needle tube; 21, needle head; 22, sleeve; 23, flexible connecting pipe; 3, detachable structure; 31, protruding block; 32, positioning groove; 4, plugging structure; 41, plugging cover; 42, connecting belt;

[0024] 200, storage bottle; 300, sample needle cleaning bottle.

[0025] The implementation, functional features and advantages of the utility model will be further described with reference to the accompanying drawings in combination with the embodiments. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if the description of "first", "second" and the like is involved in the embodiments of the utility model, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0029] Food safety detection standards all need to use gas chromatography type large instrument, gas chromatography type instrument includes carrier gas system, sampling system, chromatographic column and column temperature, detection system, recording system etc. Among them, the sampling needle required by the sampling system is an indispensable tool in gas chromatography analysis, which is specially used to introduce the sample into the detection system for analysis to support the analysis requirement of complex sample, in order to avoid cross infection, the sampling needle is automatically inserted into the cleaning bottle before and after use for cleaning. However, the common sampling needle cleaning bottle capacity is only 5ml at most, the traditional liquid adding operation needs to open the liquid storage bottle cap manually and then add liquid. This mode has three shortcomings: first, the opening and liquid adding process is easy to cause liquid leakage or overflow, resulting in waste of cleaning liquid; second, the commonly used cleaning liquid is toxic and harmful organic reagent, which undoubtedly causes the risk of inhaling volatile gas to the operator during the opening and liquid adding process; third, the opening and closing process is time-consuming and laborious, and cannot realize fast and simple.

[0030] The main purpose of the utility model is to provide a liquid adding device, which aims at providing a fast, simple and environment-friendly liquid adding device.

[0031] Please refer to Figures 1 to 3 In an embodiment of the utility model, the liquid adding device 100 includes a liquid distributor 1 and a liquid adding needle tube 2, the liquid distributor 1 has a liquid inlet pipe and a liquid outlet pipe 11 communicated with the liquid inlet pipe, the liquid distributor 1 is used to be installed in the storage bottle 200 storing cleaning liquid, the liquid inlet pipe is used to be inserted into the inside of the storage bottle 200, the liquid adding needle tube 2 is communicated with the liquid outlet pipe 11 of the liquid distributor 1, the liquid adding needle tube 2 includes a needle head 21, the needle head 21 is used to be inserted into the inside of the sample needle cleaning bottle 300.

[0032] The utility model discloses a liquid adding device which comprises a liquid distributor 1, a liquid adding needle tube 2 and a storage bottle 200.

[0033] Need to explain, the liquid distributor 1 is the prior art known to everyone, and its installation with the storage bottle 200, how it sucks the cleaning liquid in the storage bottle 200 into the liquid inlet pipe and how it transfers the liquid in the liquid inlet pipe to the liquid outlet pipe 11 will not be described in detail here.

[0034] It can be understood that the sample needle cleaning bottle 300 is not the same size, in order to be able to adapt to different specifications of the sample needle cleaning bottle 300. Figure 1 And Figure 2 The liquid adding needle tube 2 further comprises a sleeve 22 and a detachable structure 3, the sleeve 22 is detachably connected with the liquid outlet pipe 11 through the detachable structure 3, and the sleeve 22 communicates the liquid outlet pipe 11 and the needle head 21; in this way, the sleeve 22 and the liquid outlet pipe 11 are detachably connected, so that the liquid adding needle tube 2 can be detached from the liquid outlet pipe 11, and when the specifications of the sample needle cleaning bottle 300 are different, the corresponding specifications of the liquid adding needle head can be replaced, and the adaptation range is increased.

[0035] The sleeve 22 and the liquid outlet pipe 11 can be connected in a threaded connection mode. In the embodiment of the utility model, please refer to Figure 3, the detachable structure 3 comprises a protrusion 31 and a positioning groove 32 arranged on the outer wall of the liquid outlet pipe 11 and the inner wall of the sleeve 22 respectively, and the protrusion 31 and the positioning groove 32 are in clamping cooperation; in this way, by using the protrusion 31 and the positioning groove 32, when disassembling, the sleeve 22 is slightly pulled, so that the protrusion 31 and the positioning groove 32 are separated, and then the sleeve 22 can be disassembled from the liquid outlet pipe 11; when reassembling, the sleeve 22 is sleeved on the liquid outlet pipe 11 and is pressed, so that the protrusion 31 and the positioning groove 32 are matched, and then the sleeve 22 and the liquid outlet pipe 11 can be disassembled. In comparison, the form of the protrusion 31 and the positioning groove 32 makes the disassembly and assembly more rapid, and the threaded connection has better sealing performance.

[0036] It can be understood that if the number of the protrusion 31 and the positioning groove 32 is only one, the protrusion 31 and the positioning groove 32 need to be matched when the sleeve 22 is assembled, which is inconvenient for assembly. In order to make the protrusion 31 and the positioning groove 32 match conveniently, in the embodiment of the utility model, at least one of the protrusion 31 and the positioning groove 32 is provided with a plurality of and is annularly distributed; wherein, the protrusion 31 can be provided with a plurality of and be annularly distributed, the positioning groove 32 can also be provided with a plurality of, or the protrusion 31 and the positioning groove 32 can both be provided with a plurality of; in this way, during the assembly of the sleeve 22, after the sleeve 22 is sleeved on the liquid outlet pipe 11, the angle at which the sleeve 22 can make the protrusion 31 and the positioning groove 32 match can be quickly found, and the convenience of assembly is improved. Of course, it is preferred that the protrusion 31 and the positioning groove 32 are both provided with a plurality of, which can improve the stability of the sleeve 22 and the protrusion 31.

[0037] In order to facilitate the disengagement of the protrusion 31 and the positioning groove 32, thereby facilitating the disassembly of the sleeve 22 and the liquid outlet pipe 11, in the embodiment of the utility model, please refer to Figure 3 , the protrusion 31 is provided in a semispherical shape, and the positioning groove 32 is correspondingly provided in a semispherical groove; in this way, the contact surface of the positioning groove 32 and the protrusion 31 is arc-shaped, and when disassembling, the arc-shaped side wall of the protrusion 31 can be pressed against the arc-shaped side wall of the positioning groove 32, so that the direction of force is changed, the sleeve 22 is expanded outward, thereby facilitating the disengagement of the protrusion 31 and the positioning groove 32, and improving the convenience of disassembly.

[0038] In order to further improve the convenience of installation of the sleeve 22 and the liquid outlet pipe 11, in the embodiment, the protrusion 31 is arranged on the outer wall of the liquid outlet pipe 11, the positioning groove 32 is arranged on the inner wall of the sleeve 22, and the inner diameter of the end of the sleeve 22 away from the needle head 21 is gradually increased. In this way, when the sleeve 22 is installed, the end of the sleeve 22 will first contact the protrusion 31 before the positioning groove 32 and the protrusion 31 are matched. After the inner diameter of the end of the sleeve 22 away from the needle head 21 is gradually increased, the arc inner wall or the inclined inner wall of the sleeve 22 contacts the protrusion 31. In addition, the protrusion 31 is in a semispherical shape, and the force direction is changed when the two are extruded, so that the sleeve 22 expands outward, thereby facilitating that the sleeve 22 can be arranged outside the protrusion 31, and the matching of the protrusion 31 and the positioning groove 32 is facilitated, and the convenience of installation is improved.

[0039] When the sample needle cleaning bottle 300 is added with cleaning liquid, the needle head 21 needs to penetrate into the inside of the sample needle cleaning bottle 300, and if the needle head 21 is fixed relative to the sleeve 22, the sample needle cleaning bottle 300 needs to be held and moved upward to be extruded with the needle head 21, and the dispenser 1 and the storage bottle 200 also need to be held to prevent tilting, which is more troublesome. Therefore, in the embodiment of the utility model, the needle head 21 is arranged to be movable relative to the sleeve 22 in the up-down direction. In this way, when the sample needle cleaning bottle 300 is added with cleaning liquid, the sample needle cleaning bottle 300 only needs to be placed below the needle head 21, the needle head 21 is inserted into the sample needle cleaning bottle 300 by holding the end of the needle head 21 close to the sleeve 22.

[0040] There are various ways to make the needle head 21 movable relative to the sleeve 22 in the up-down direction, for example, a telescopic pipe or a bellows pipe can be used to connect the sleeve 22 and the needle head 21. In the embodiment, please refer to Figure 2 , the liquid adding needle pipe 2 further comprises a flexible connecting pipe 23, the flexible connecting pipe 23 connects the sleeve 22 and the needle head 21, so that the needle head 21 is arranged to be movable relative to the sleeve 22 in the up-down direction. In this way, by connecting through the flexible connecting pipe 23, the needle head 21 is movable relative to the sleeve 22 in the horizontal direction in addition to being movable in the up-down direction. When penetrating into the sample needle cleaning bottle 300, the sample needle cleaning bottle 300 does not need to be placed directly below the needle head 21, and the use is more convenient.

[0041] When the liquid adding device 100 is not used, the liquid adding needle tube 2 is detached from the liquid outlet pipe 11 for cleaning or sterilization, which can obviously reduce the possibility of contamination of the cleaning liquid in the sample needle cleaning bottle, but also causes the liquid outlet pipe 11 to be exposed outside. In order to reduce the possibility of contamination of the liquid outlet pipe 11 after the liquid adding needle tube 2 is detached, the liquid adding device 100 further comprises a plugging structure 4 in the embodiment of the utility model, please refer to Figure 1 , the plugging structure 4 comprises a plugging cover 41, and the plugging cover 41 is used to plug the liquid outlet pipe 11 when the sleeve 22 and the liquid outlet pipe 11 are detached; in this way, the outlet of the liquid outlet pipe 11 is plugged by the plugging cover 41, so that foreign matters cannot enter the liquid outlet pipe 11 through the outlet of the liquid outlet pipe 11 to cause contamination.

[0042] In order to facilitate finding the plugging cover 41, the plugging structure 4 further comprises a connecting belt 42 in the embodiment, one end of the connecting belt 42 is fixed with the liquid distributor 1, and the other end is fixed with the plugging cover 41; in this way, the plugging cover 41 and the liquid distributor 1 are arranged together through the arrangement of the connecting belt 42, which is convenient to find.

[0043] The above-mentioned is only an exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A liquid adding device characterized by comprising: The application relates to a liquid adding device, comprising: a liquid distributor having a liquid inlet pipe and a liquid outlet pipe in communication with the liquid inlet pipe, the liquid distributor being arranged in a storage bottle containing cleaning liquid, the liquid inlet pipe being arranged to extend into the interior of the storage bottle; and a liquid adding needle pipe in communication with the liquid outlet pipe of the liquid distributor, the liquid adding needle pipe comprising a needle head arranged to penetrate into the interior of a sample needle cleaning bottle.

2. The liquid adding device according to claim 1, wherein The liquid adding needle pipe further comprises a sleeve and a detachable structure, the sleeve being detachably connected to the liquid outlet pipe through the detachable structure, the sleeve being in communication with the liquid outlet pipe and the needle head.

3. The liquid adding device according to claim 2, wherein The detachable structure comprises a protrusion and a positioning groove arranged separately on the outer wall of the liquid outlet pipe and the inner wall of the sleeve, the protrusion and the positioning groove being in clamping engagement.

4. The liquid adding device according to claim 3, wherein At least one of the protrusion and the positioning groove is provided with a plurality of annularly distributed protrusions.

5. The liquid adding device according to claim 3 or 4, wherein The protrusion is provided in a semispherical shape, and the positioning groove is correspondingly provided in a semispherical groove.

6. The liquid adding device according to claim 5, wherein The protrusion is arranged on the outer wall of the liquid outlet pipe, and the positioning groove is arranged on the inner wall of the sleeve. The inner diameter of the sleeve at the end away from the needle head is arranged in an increasing manner.

7. The liquid adding device according to claim 2, wherein The needle head is movably arranged in the up-down direction relative to the sleeve.

8. The liquid adding device according to claim 7, wherein The liquid adding needle pipe further comprises a flexible connecting pipe, the flexible connecting pipe connecting the sleeve and the needle head, so that the needle head is movably arranged in the up-down direction relative to the sleeve.

9. The liquid adding device according to claim 2, wherein The liquid adding device further comprises a plugging structure, the plugging structure comprising a plugging cover, the plugging cover being used to plug the liquid outlet pipe when the sleeve is detached from the liquid outlet pipe.

10. The liquid adding device according to claim 9, wherein The plugging structure further comprises a connecting belt, one end of the connecting belt being fixed to the liquid distributor, and the other end of the connecting belt being fixed to the plugging cover.

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