Chemical testing dropper

Abstract

The application provides a dropper for chemical inspection. The dropper for chemical inspection comprises a dropper body (1) and a fixing support (2), the dropper body (1) comprises a main pipe (13), the fixing support (2) comprises a fixing seat (22), a clamping groove (21) is formed in the fixing seat (22), the main pipe (13) is arranged in the clamping groove (21), a clamping mechanism (3) is further arranged in the clamping groove (21), the clamping mechanism (3) comprises at least two oppositely arranged movable clamping plates (31) and elastic pressing devices matched with the movable clamping plates (31), the movable clamping plate (31) is hinged to the inner wall of the clamping groove (21), one end of the elastic pressing device is connected to the inner wall of the clamping groove (21), and the other end is connected to the movable clamping plate (31), and the main pipe (13) is clamped and fixed by the movable clamping plate (31). The technical scheme of the application can solve the problem that the existing dropper support cannot stably fix the dropper, and the dropper may be damaged due to collision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of chemical detection, in particular to a dropper for chemical inspection. BACKGROUND

[0002] Chemical inspection includes quality inspection of industrial sodium carbonate, quality inspection of solid sodium hydroxide, quality inspection of cement, identification of industrial benzoic acid, quality inspection of ethyl acetate, inspection of vitamin C and acetaminophen in vitamin C and silverleaf buccal tablets, and inspection of arsenic and lead content in cosmetics, etc. In the process of inspecting various chemical products, a dropper is needed to complete the dropping of the medicine or sample.

[0003] The existing dropper for chemical inspection has the risk of being contaminated if it is placed randomly during use, because the dropper needs to be frequently taken to use the medicine or sample. Therefore, a dropper support is often used to place the dropper. However, the existing dropper support cannot stably fix the dropper, which may be damaged due to collision. SUMMARY

[0004] The main purpose of the present application is to provide a dropper for chemical inspection, which can solve the problem that the existing dropper support cannot stably fix the dropper, which may be damaged due to collision.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a dropper for chemical inspection is provided, which comprises a dropper body and a fixing support. The dropper body comprises a main pipe, and the fixing support comprises a fixing seat. A clamping groove is formed in the fixing seat, and the main pipe is arranged in the clamping groove. A clamping mechanism is further arranged in the clamping groove. The clamping mechanism comprises at least two oppositely arranged movable clamping plates and an elastic pressing device matched with the movable clamping plates. The movable clamping plates are hinged to the inner wall of the clamping groove. One end of the elastic pressing device is connected to the inner wall of the clamping groove, and the other end is connected to the movable clamping plates. The main pipe is clamped and fixed by the movable clamping plates.

[0006] Further, the movable clamping plate is an arc-shaped plate protruding towards the main pipe. In the cross section passing through the center axis of the clamping groove, the first end of the movable clamping plate is hinged to the inner wall of the clamping groove, and the second end of the movable clamping plate can swing relative to the fixing seat.

[0007] Further, the surface of the movable clamping plate facing the main pipe is provided with a soft layer, and the movable clamping plate forms a clamping fit with the main pipe through the soft layer.

[0008] Further, the surface of the movable clamping plate facing the main pipe is provided with an embedding groove, and the soft layer is embedded in the embedding groove. The surface of the soft layer is flush with the surface of the movable clamping plate.

[0009] Further, the swing end of the movable card board is provided with a protection structure, the protection structure has an arc surface protruding towards the main pipe, and the arc surface protrudes from the plate surface of the movable card board towards the main pipe.

[0010] Further, the protection structure is a cylinder or a ball head.

[0011] Further, the elastic compression device comprises a limiting rod, a push rod and an elastic tension member, one side of the movable card board towards the elastic compression device is provided with a sliding rail, the sliding rail extends from the hinged end to the swing end of the movable card board, the two opposite sides of the limiting rod are respectively provided with the push rod, the end portions of the two push rods arranged in pairs are in sliding fit with the sliding rail, and the elastic tension member is arranged between the two push rods arranged in pairs and provides elastic tension force to the two push rods.

[0012] Further, the end portion of the limiting rod close to the movable card board is provided with a limiting block, and the surface of the limiting block towards the movable card board is an outward convex arc surface.

[0013] Further, one end of the elastic tension member is fixedly connected to the push rod, the other end of the elastic tension member is fixedly connected to the limiting block, and the elastic tension members on the two sides of the limiting rod are symmetric about the center line of the limiting rod.

[0014] Further, the limiting rod is sleeved with a sliding sleeve, one end of the push rod is hinged to the sliding sleeve, the other end of the push rod is in sliding fit with the sliding rail, an elastic member is arranged between the sliding sleeve and the inner wall of the clamping groove, and the elastic member provides elastic force to the sliding sleeve to slide towards the movable card board.

[0015] Further, the limiting rod is hinged to the inner wall of the clamping groove.

[0016] Further, the fixed support further comprises a base, the base and the fixed seat are fixedly connected through a connecting rod, the base is provided with a boss, the boss is provided with an accommodating groove corresponding to the clamping groove, and the bottom of the dropper body is located in the accommodating groove.

[0017] Further, the dropper body further comprises an adsorption rubber head, the head of the main pipe is provided with a communication groove, the adsorption rubber head is sleeved outside the head, the inner cavity of the adsorption rubber head is in communication with the pipe cavity of the main pipe through the communication groove, a one-way communication structure is arranged at the communication groove, the one-way communication structure opens the communication groove when the fluid flows from the adsorption rubber head to the pipe cavity, and closes the communication groove when the fluid flows from the pipe cavity to the adsorption rubber head.

[0018] Further, the one-way communication structure comprises a rotating part, a sealing part and an elastic recovery part, the rotating part is rotatably installed on the main pipe, the sealing part is arranged at the communication groove and fixedly connected with the rotating part, and the elastic recovery part is connected between the sealing part and the main pipe and provides elastic force to the sealing part to seal the communication groove.

[0019] Further, the head of the main pipe is provided with a baffle, a communication groove is arranged on the baffle, and a sealing part is arranged on the side of the baffle facing the lumen.

[0020] Further, a mounting groove is arranged on the inner wall of the baffle facing the lumen, a mounting block is arranged in the mounting groove, and the rotating part is rotatably arranged on the mounting block.

[0021] Further, a step groove is arranged on the side of the baffle facing the lumen, the sealing part comprises a sealing main plate and a sealing side plate, the sealing main plate is shaped to be matched with the communication groove and is arranged correspondingly to the communication groove, the sealing side plate is fixedly connected with the sealing main plate and is arranged correspondingly to the step groove, and when the sealing main plate enters the communication groove, the sealing side plate enters the step groove and is stopped outside the step of the step groove.

[0022] Further, a soft sealing plate is arranged on the side of the sealing main plate facing the inner cavity of the adsorbing rubber head, and when the sealing part seals the communication groove, the intersection surface of the sealing main plate and the soft sealing plate is flush with the step surface of the step groove.

[0023] Further, the elastic recovery part comprises a tension spring, the tension spring is located in the inner cavity of the adsorbing rubber head, one end of the tension spring is fixedly connected with the main pipe, and the other end of the tension spring is fixedly connected with the sealing part.

[0024] The chemical inspection dropper comprises a dropper body and a fixing support, the dropper body comprises a main pipe, the fixing support comprises a fixing seat, a clamping groove is arranged on the fixing seat, the main pipe is arranged in the clamping groove, a clamping mechanism is further arranged in the clamping groove, the clamping mechanism comprises at least two oppositely arranged movable clamping plates and an elastic pressing device matched with the movable clamping plates, the movable clamping plates are hingedly connected with the inner wall of the clamping groove, one end of the elastic pressing device is connected with the inner wall of the clamping groove, and the other end of the elastic pressing device is connected with the movable clamping plates, and the main pipe is clamped and fixed by the movable clamping plates. The dropper body is arranged in the fixing support, the clamping mechanism of the fixing support is used to fix the main pipe of the dropper body, the elastic pressing device is used to press the main pipe by the elastic action of the movable clamping plates, adaptive fixing is realized, the placement requirements of dropper bodies of different specifications can be met, one end of the movable clamping plates is hingedly connected with the inner wall of the clamping groove, therefore, the movable clamping plates can form a stable connection structure with the fixing seat, under the action of the stable connection structure, the elastic action of the movable clamping plates generated by the elastic pressing device makes one side of the movable clamping plates swing, thereby effectively and stably fixing the dropper body, and the swing action of the movable clamping plates can effectively solve the problem that the existing dropper support cannot stably fix the dropper, which may be damaged due to collision. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings constituting a part of the specification illustrate the present application, the exemplary embodiments of the present application and their description serve to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0026] Fig. 1 A perspective structural schematic view of the dropper for chemical inspection showing an embodiment of the present application is shown;

[0027] Fig. 2 A sectional structural schematic view of the dropper for chemical inspection showing an embodiment of the present application is shown;

[0028] Fig. 3 An enlarged structural schematic view of the dropper for chemical inspection at A showing an embodiment of the present application is shown; and

[0029] Fig. 4 A schematic view of the one-way conduction structure of the dropper for chemical inspection showing an embodiment of the present application is shown.

[0030] Among the above drawings, the following reference signs are included:

[0031] 1, dropper body; 11, adsorbed rubber head; 12, communication groove; 13, main pipe; 131, baffle; 132, mounting groove; 133, mounting block; 134, step groove; 2, fixed support; 21, clamping groove; 22, fixed seat; 23, connecting rod; 24, boss; 25, containing groove; 26, base; 3, clamping mechanism; 31, movable clamping plate; 311, embedded groove; 312, protection structure; 32, soft layer; 33, slide rail; 34, push rod; 35, elastic tension member; 36, limiting block; 37, limiting rod; 38, sliding connection block; 39, elastic member; 4, one-way conduction structure; 41, rotating part; 42, sealing main plate; 43, sealing side plate; 44, soft sealing plate; 45, tension spring. DETAILED DESCRIPTION

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] For reference Figs. 1 to 4As shown, the present application provides a kind of chemical inspection dropper, including dropper body 1 and fixed support 2, dropper body 1 includes main pipe 13, fixed support 2 includes fixed seat 22, fixed seat 22 is provided with clamping groove 21, main pipe 13 is arranged in clamping groove 21, clamping groove 21 is further provided with clamping mechanism 3, clamping mechanism 3 includes at least two oppositely arranged movable clamping plate 31 and the elastic compression device matched with movable clamping plate 31, movable clamping plate 31 is hinged on the inner wall of clamping groove 21, one end of elastic compression device is connected on the inner wall of clamping groove 21, the other end is connected on movable clamping plate 31, and main pipe 13 is clamped and fixed by movable clamping plate 31.

[0034] The chemical inspection dropper sets up dropper body 1 in fixed support 2, and utilizes the clamping mechanism 3 of fixed support 2 to fix the main pipe 13 of dropper body 1, utilizes the elastic action of elastic compression device to the elastic action of movable clamping plate 31 to the main pipe 13, realizes adaptive fixing, can satisfy the placement requirement of different specifications of dropper body 1, since one end of movable clamping plate 31 is hinged on the inner wall of clamping groove 21, therefore movable clamping plate 31 can form stable connecting structure with fixed seat 22, under the action of this stable connecting structure, the elastic action of elastic compression device to movable clamping plate 31 makes one side of movable clamping plate 31 swing, and then realizes the effective stable fixing of dropper body 1, utilizes the swing action of movable clamping plate 31, can effectively solve the problem that the existing dropper support cannot stably fix the dropper, leading to the damage of dropper possibly due to collision.

[0035] In the embodiment, the hinged end of movable clamping plate 31 is located at the entering end of dropper body 1, and the swing end of movable clamping plate 31 is located at the through end of dropper body 1, so when dropper body 1 starts to enter clamping groove 21, it will enter the clamping space formed by at least two movable clamping plates 31 from the hinged end of movable clamping plate 31, under the extrusion of dropper body 1, the movable clamping plate 31 on the periphery is opened away from the direction of dropper, and the gradually opened movable clamping plate 31 extrudes elastic compression device, so that elastic compression device is in compression state, and elastic compression device generates reverse elastic force to movable clamping plate 31, so that movable clamping plate 31 clamps the main pipe 13 of dropper body 1, thereby forming clamping and fixing of dropper body 1.

[0036] Since one end of movable clamping plate 31 is hinged on the inner wall of clamping groove 21, the mounting structure of movable clamping plate 31 is relatively stable, and the swing end of movable clamping plate 31 has a larger activity space, which can adapt to the fixation of dropper body 1 with a larger diameter range, and the whole clamping mechanism 3 is arranged in clamping groove 21, so it will not occupy the additional space of fixed support 2, and the overall structure is more compact and occupies smaller volume.

[0037] In one embodiment, the movable clamping plate 31 is an arc plate protruding towards the main pipe 13, and in a cross section passing through the central axis of the clamping slot 21, the first end of the movable clamping plate 31 is hinged to the inner wall of the clamping slot 21, and the second end of the movable clamping plate 31 can swing relative to the fixed seat 22.

[0038] In the embodiment, the movable clamping plate 31 is an arc plate protruding towards the main pipe 13, and the first end of the movable clamping plate 31 is hinged to the inner wall of the clamping slot 21, and the main pipe body 1 is located between at least two oppositely arranged arc plates, so that the main pipe 13 of the main pipe body 1 is always in contact with the arc surface of the arc plate during movement, and is not easy to scratch, thereby effectively protecting the main pipe body 1.

[0039] In one embodiment, the movable clamping plate 31 can be four, and each movable clamping plate 31 is provided with an elastic pressing device, and the four movable clamping plates 31 are uniformly distributed along the circumference of the clamping slot 21, so that when the main pipe body 1 is loaded into the clamping slot 21, the four movable clamping plates 31 can simultaneously exert clamping force on the main pipe 13, thereby forming more stable and effective positioning effect on the main pipe body 1.

[0040] In one embodiment, the surface of the movable clamping plate 31 towards the main pipe 13 is provided with a soft layer 32, and the movable clamping plate 31 is clamped and matched with the main pipe 13 through the soft layer 32.

[0041] In the embodiment, the surface of the movable clamping plate 31 towards the main pipe 13 is provided with a soft layer 32, and when the main pipe 13 is loaded into the clamping space formed by the plurality of movable clamping plates 31, the soft layer 32 is in contact with the main pipe 13, and the outer surface of the main pipe body 1 first abuts against the outer surface of the soft layer 32 when the main pipe body 1 slides downwards along the inside of the clamping slot 21, and the movable clamping plate 31 is extruded to rotate to a certain extent, and the soft layer 32 can protect the main pipe body 1. In addition, the soft layer 32 deforms when it is in contact with the main pipe 13, and can be in contact with the surface of the main pipe 13 with a larger area, so that the soft layer 32 can more stably and effectively fix the main pipe body 1.

[0042] In one embodiment, the surface of the movable clamping plate 31 towards the main pipe 13 is provided with an embedding groove 311, and the soft layer 32 is embedded in the embedding groove 311, and the surface of the soft layer 32 is flush with the surface of the movable clamping plate 31.

[0043] In the embodiment, the soft layer 32 can be embedded between the movable card plate 31 to realize the installation and fixation of the soft layer 32 on the movable card plate 31. The soft layer 32 can also be directly glued and fixed in the embedding groove 311 or fixed on the movable card plate 31 by screw connection or other ways.

[0044] In some embodiments, the embedding groove 311 can not be arranged on the movable card plate 31, and the soft layer 32 can be integrally laid on the surface of the movable card plate 31 facing the main pipe 13.

[0045] In an embodiment, the swing end of the movable card plate 31 is provided with a protection structure 312, which has an arc-shaped surface protruding towards the main pipe 13, and the arc-shaped surface protrudes from the plate surface of the movable card plate 31 facing the main pipe 13.

[0046] In the embodiment, the protection structure 312 is located at the swing end of the movable card plate 31. When the main pipe 13 passes through the clamping structure formed by the movable card plate 31, it can contact the end of the movable card plate 31. If the end of the movable card plate 31 has an edge, it can scratch the surface of the main pipe 13 during the passing process, which can damage the main pipe 13 and the dropper body 1. The swing end of the movable card plate 31 is provided with the protection structure 312 having an arc-shaped surface protruding towards the main pipe 13. When the main pipe 13 passes through the clamping space formed by the movable card plate 31, it can contact the arc-shaped surface, but not the edge. Therefore, the main pipe 13 can be effectively protected.

[0047] In an embodiment, the protection structure 312 is a cylinder or a ball head.

[0048] In an embodiment, the elastic pressing device includes a limiting rod 37, a push rod 34 and an elastic tension member 35. The side of the movable card plate 31 facing the elastic pressing device is provided with a sliding rail 33 extending from the hinged end to the swing end of the movable card plate 31. The two opposite sides of the limiting rod 37 are respectively provided with the push rod 34. The ends of the two push rods 34 arranged in pairs are in sliding fit with the sliding rail 33. The elastic tension member 35 is arranged between the two push rods 34 arranged in pairs and provides elastic tension force to the two push rods 34.

[0049] In the embodiment, the push rod 34 is located on both sides of the limiting rod 37, and the elastic force provided by the elastic tension member 35 is used to retract the limiting rod 37, so when the push rod 34 is not pressed by the main pipe 13 of the dropper body 1, the push rod 34 will move along the slide rail 33 under the tension of the elastic tension member 35 and retract towards the limiting rod 37, thereby pushing the movable clamping plate 31 out of the clamping space, when the dropper body 1 is inserted into the clamping space of the movable clamping plate 31, the movable clamping plate 31 is pressed outward, under the pressing of the movable clamping plate 31, the push rod 34 slides along the slide rail 33 away from the limiting rod 37, in this process, the tension provided by the elastic tension member 35 gradually increases, the pushing force of the push rod 34 to the movable clamping plate 31 also gradually increases, and the force applied to the main pipe 13 also gradually increases, thereby clamping the main pipe 13 and achieving the stable fixing of the main pipe 13.

[0050] In an embodiment, the end of the limiting rod 37 close to the movable clamping plate 31 is provided with a limiting block 36, and the surface of the limiting block 36 facing the movable clamping plate 31 is an outward convex arc surface. In the embodiment, the limiting block 36 can be in contact with the movable clamping plate 31, therefore, in order to avoid scratching or generating excessive friction force when the limiting block 36 is in contact with the movable clamping plate 31, the side of the limiting block 36 facing the movable clamping plate 31 is provided with an outward convex arc surface, thereby effectively reducing the friction between the limiting block 36 and the movable clamping plate 31, and avoiding damage to the movable clamping plate 31 caused by the corner structure.

[0051] In an embodiment, one end of the elastic tension member 35 is fixedly connected to the push rod 34, and the other end of the elastic tension member 35 is fixedly connected to the limiting block 36, and the elastic tension members 35 located on both sides of the limiting rod 37 are symmetric about the center line of the limiting rod 37.

[0052] In the embodiment, the force applied by the elastic tension member 35 to the push rod 34 has two components, one component is perpendicular to the direction of the limiting rod 37, and the other component is a component supporting the movable clamping plate 31, since the limiting block 36 is located at the end of the limiting rod 37 close to the movable clamping plate 31, one end of the elastic tension member 35 is connected to the limiting block 36, and the other end is connected to the push rod 34, thereby maximizing the component of the elastic tension member 35 applied to the push rod 34 supporting the movable clamping plate 31, thereby maximizing the effective force of the elastic tension member 35, and improving the fixing effect of the movable clamping plate 31 on the dropper body 1. The elastic tension member 35 described above is, for example, a tension rope, and can also be a tension spring or other structure having an elastic tension effect.

[0053] In one embodiment, the limiting rod 37 is provided with a sliding connecting block 38, one end of the push rod 34 is hinged to the sliding connecting block 38, the other end of the push rod 34 is in sliding fit with the slide rail 33, the sliding connecting block 38 and the inner wall of the clamping groove 21 are provided with an elastic element 39, and the elastic element 39 provides the sliding connecting block 38 with an elastic force for sliding towards the movable clamping plate 31. The elastic element 39 is, for example, a spring.

[0054] In the present embodiment, by providing the sliding connecting block 38 on the limiting rod 37 and the elastic element 39 between the sliding connecting block 38 and the inner wall of the clamping groove 21, the elastic element 39 can be used to exert an elastic force on the sliding connecting block 38 for moving towards the movable clamping plate 31, at the same time, the elastic tensioning element 35 exerts a tension on the push rod 34, and the push rod 34 can also exert a force on the sliding connecting block 38 for moving away from the movable clamping plate 31, the two pairs of forces can form a counteracting force, and a dynamic balance can be formed during the placement of the dropper body 1 on the fixed support 2, so that the installation of the dropper body 1 can form a better adaptability.

[0055] In one embodiment, the limiting rod 37 is hinged to the inner wall of the clamping groove 21. In the present embodiment, the limiting rod 37 can swing relative to the movable clamping plate 31, so that the entire elastic compression device can move relative to the movable clamping plate 31, and a good dynamic balance effect can be formed as a whole, improving the stability and reliability of the clamping mechanism 3 for the support structure of the dropper body 1.

[0056] In one embodiment, the limiting rod 37 can also be fixedly provided on the inner wall of the clamping groove 21.

[0057] In the present embodiment, by pushing the push rod 34 along the slide rail 33 to move backward, the elastic tensioning element 35 is stretched and elastically deformed, at the same time, the sliding connecting block 38 slides along the limiting rod 37 to one side and compresses the elastic element 39 to make it elastically deform, the elastic force in the opposite direction of the extrusion force is generated by the above elastically deformed structure, and acts on the outer surface of the dropper body 1 in the opposite direction, so that the outer surface of the dropper body 1 abuts closely with the outer surface of the soft layer 32, the dropper is clamped more stably, and the dropper is convenient to use, at the same time, the problem of damage of the dropper due to collision is avoided.

[0058] In one embodiment, the fixed support 2 further comprises a base 26, the base 26 and the fixed seat 22 are fixedly connected through the connecting rod 23, the base 26 is provided with a boss 24, the boss 24 is provided with a receiving groove 25 corresponding to the clamping groove 21, and the bottom of the dropper body 1 is located in the receiving groove 25. The bottom pipe of the dropper body 1 is located in the receiving groove 25, and the receiving groove 25 can effectively protect the bottom structure of the dropper body 1.

[0059] In one embodiment, the dropper body 1 further comprises a suction rubber head 11, the head of the main pipe 13 is provided with a communication groove 12, the suction rubber head 11 is sleeved outside the head, the inner cavity of the suction rubber head 11 communicates with the pipe cavity of the main pipe 13 through the communication groove 12, the communication groove 12 is provided with a one-way conduction structure 4, the one-way conduction structure 4 opens the communication groove 12 when the fluid flows from the suction rubber head 11 to the pipe cavity, and closes the communication groove 12 when the fluid flows from the pipe cavity to the suction rubber head 11.

[0060] In the embodiment, by adopting the one-way conduction structure 4, the negative pressure can be formed by the extrusion of the suction rubber head 11, the sampling is facilitated, and after the sampling is completed, the one-way conduction function of the one-way conduction structure 4 can be used to close the communication groove 12, so that the liquid enters the suction rubber head 11, the suction rubber head 11 is corroded, and the problem of reducing the service life of the device is caused.

[0061] In one embodiment, the one-way conduction structure 4 comprises a rotating part 41, a sealing part and an elastic recovery part, the rotating part 41 is rotatably installed on the main pipe 13, the sealing part is arranged at the communication groove 12 and fixedly connected with the rotating part 41, and the elastic recovery part is connected between the sealing part and the main pipe 13 and provides the sealing part with an elastic force for sealing the communication groove 12.

[0062] In the embodiment, the elastic recovery force of the elastic recovery part can be used to cooperate with the rotating part 41, so that when the one-way conduction structure 4 is not subjected to the gas pressure of the suction rubber head 11, the sealing part can be pulled back to the sealing position by the elastic recovery action of the elastic recovery part, and the automatic sealing of the communication groove 12 is realized.

[0063] In one embodiment, the head of the main pipe 13 is provided with a baffle 131, the communication groove 12 is opened on the baffle 131, the sealing part is arranged on the side of the baffle 131 facing the pipe cavity and is stopped by the baffle 131.

[0064] In the embodiment, the head of the main pipe 13 is provided with the baffle 131, the communication groove 12 can be conveniently arranged by using the baffle 131, the opening position and the opening area of the communication groove 12 can be actively controlled, the one-way conduction structure 4 can be optimized, and the setting difficulty of the one-way conduction structure 4 is reduced.

[0065] In one embodiment, the inner wall surface of the baffle 131 facing the pipe cavity is provided with a mounting groove 132, a mounting block 133 is arranged in the mounting groove 132, and the rotating part 41 is rotatably arranged on the mounting block 133.

[0066] In the embodiment, the installation groove 132 is arranged on the inner wall of the baffle 131, so that the installation position is provided for the installation of the installation block 133, and the installation of the rotating part 41 is facilitated, the structure is more reasonable, the overall structure is more compact, and the miniaturization and light weight of the overall structure are facilitated.

[0067] In one embodiment, the baffle 131 is provided with a stepped groove 134 on the side facing the lumen, the sealing part includes a sealing main plate 42 and a sealing side plate 43, the sealing main plate 42 is matched with the communication groove 12 in shape and is arranged correspondingly to the communication groove 12, the sealing side plate 43 is fixedly connected with the sealing main plate 42 and is arranged correspondingly to the stepped groove 134, and when the sealing main plate 42 enters the communication groove 12, the sealing side plate 43 enters the stepped groove 134 and is stopped outside the step of the stepped groove 134.

[0068] In the embodiment, the stepped groove 134 is arranged on the baffle 131 and located on the side of the communication groove 12 away from the rotating part 41, and the sealing side plate 43 is arranged on the side of the sealing main plate 42 away from the rotating part 41, so that the sealing side plate 43 is matched with the stepped groove 134 to form a sealing fit, so that the sealing part can form a better sealing with the baffle 131, and in addition, the sealing side plate 43 and the stepped groove 134 can form a stop limiting effect on the sealing part on the side away from the rotating part 41, and the rotating part 41 is installed on the installation block 133 and can also be stopped on the side of the baffle 131 away from the suction rubber head 11, so that the sealing part is effectively prevented from being pulled out of the communication groove 12 under the elastic effect of the elastic recovery part, and the sealing effect of the sealing part is ensured.

[0069] In one embodiment, the sealing main plate 42 is provided with a soft sealing plate 44 on the side facing the inner cavity of the suction rubber head 11, and when the sealing part seals the communication groove 12, the intersection surface of the sealing main plate 42 and the soft sealing plate 44 is flush with the stepped surface of the stepped groove 134.

[0070] In the embodiment, when the communication groove 12 is in a sealed state, the soft sealing plate 44 is located in the communication groove 12, and extrusion deformation can be formed between the soft sealing plate 44 and the inner wall of the communication groove 12, so as to further improve the sealing effect between the sealing part and the communication groove 12. In addition, the elastic recovery part is connected to the soft sealing plate 44, so that the impact effect generated when the sealing part blocks the communication groove 12 under the elastic force of the elastic recovery part is reduced, the impact damage to the sealing part is reduced, and the service life of the sealing part is prolonged.

[0071] In one embodiment, the elastic recovery part includes a tension spring 45, the tension spring 45 is located in the inner cavity of the suction rubber head 11, one end of the tension spring 45 is fixedly connected to the main pipe 13, and the other end of the tension spring 45 is fixedly connected to the sealing part.

[0072] The tension spring 45 can also be replaced by a tension rope or other tension structure.

[0073] In this embodiment, the tension spring 45 is arranged in the inner cavity of the adsorption rubber head 11. Since the liquid of the sample cannot enter the adsorption rubber head 11, it cannot come into contact with the tension spring 45, and thus cannot corrode the tension spring 45, thereby ensuring the working performance and service life of the tension spring 45.

[0074] In one embodiment, a through hole is arranged on the adsorption rubber head 11 and communicates with the inner cavity. The through hole can be opened or closed, so that the communication between the inner cavity of the adsorption rubber head 11 and the outside can be controlled as needed. After the adsorption rubber head 11 is pressed to open the sealing part, the adsorption rubber head 11 is released, and in the process of sealing the communication groove 12 by the sealing part, the adsorption rubber head 11 returns to its original state to generate negative pressure, thereby sucking the sample into the main pipe 13. When the sealing part seals the communication groove 12, the adsorption rubber head 11 cannot continue to suck gas, and thus is in a pressed state. In this case, it is inconvenient to perform the next sampling, and thus it is necessary to enable the adsorption rubber head 11 to return to its original state, thereby facilitating the adsorption rubber head 11 to extrude gas outward to form negative pressure. By arranging the through hole on the adsorption rubber head 11, the problem can be easily solved. After the sealing part seals the communication groove 12, the inner cavity of the adsorption rubber head 11 is cut off from the lumen of the main pipe 13. At this time, the external air can enter the adsorption rubber head 11 through the through hole, so that the adsorption rubber head 11 can return to its original state, and the space in the main pipe 13 is in a negative pressure state. The sample can be kept in the main pipe 13, and thus the subsequent sampling operation is facilitated.

[0075] A plug can be arranged at the position of the through hole, and the opening and closing control of the through hole can be realized by taking and placing the plug. In addition, the opening and closing of the through hole can also be directly controlled by hand.

[0076] The operation process of the drop tube for chemical inspection is as follows: when the drop tube body 1 slides downward along the inside of the clamping groove 21, the outer surface of the drop tube body 1 first abuts against the outer surface of the soft layer 32, and an extrusion effect is generated on the movable clamping plate 31, so that the movable clamping plate 31 rotates to a certain extent along one end, the push rod 34 is pushed to move backward along the slide rail 33, the elastic tension member 35 is stretched and elastically deformed, at the same time, the sliding connecting block 38 slides to one side along the limiting rod 37, and the elastic member 39 is compressed and elastically deformed, the elastic force in the opposite direction of the extrusion force is generated through the above elastically deformed structure, and the elastic force is reversely applied to the outer surface of the drop tube body 1, so that the outer surface of the drop tube body 1 is closely abutted against the outer surface of the soft layer 32, and the drop tube is more stably clamped; when sampling is needed through the drop tube body 1, the adsorption rubber head 11 is first extruded, so that the gas in the inside of the adsorption rubber head 11 extrudes the soft sealing plate 44, the sealing main plate 42 and the sealing side plate 43 through the communication groove 12, and the tension spring 45 is stretched and elastically deformed, so that the sealing side plate 43, the sealing main plate 42, the soft sealing plate 44 and the communication groove 12 rotate along the rotating part 41, the sealing main plate 42, the sealing side plate 43 and the soft sealing plate 44 are separated from the inner wall of the communication groove 12, so that the gas in the inside of the adsorption rubber head 11 flows out through the communication groove 12, and a negative pressure space is formed, then the bottom of the drop tube body 1 is placed into the liquid to be sampled, and the adsorption rubber head 11 is released, so that the sampling is completed, after the sampling is completed, the internal and external air pressure is balanced, the sealing main plate 42, the sealing side plate 43 and the soft sealing plate 44 rebound under the action of the stretched tension spring 45 to seal the communication groove 12, and the liquid is prevented from entering the inside of the adsorption rubber head 11.

[0077] The drop tube for chemical inspection has the following technical effects:

[0078] 1, the cooperation between the movable clamping plate 31, the soft layer 32, the slide rail 33, the push rod 34, the elastic tension member 35, the limiting block 36, the limiting rod 37, the sliding connecting block 38 and the elastic member 39, when the drop tube body 1 slides downward along the inside of the clamping groove 21, the outer surface of the drop tube body 1 first abuts against the outer surface of the soft layer 32, and an extrusion effect is generated on the movable clamping plate 31, so that the movable clamping plate 31 rotates to a certain extent along one end, the push rod 34 is pushed to move backward along the slide rail 33, the elastic tension member 35 is stretched and elastically deformed, at the same time, the sliding connecting block 38 slides to one side along the limiting rod 37, and the elastic member 39 is compressed and elastically deformed, the elastic force in the opposite direction of the extrusion force is generated through the above elastically deformed structure, and the elastic force is reversely applied to the outer surface of the drop tube body 1, so that the outer surface of the drop tube body 1 is closely abutted against the outer surface of the soft layer 32, and the drop tube is more stably clamped, and the drop tube is conveniently taken and used, and the problem that the drop tube is damaged due to collision is avoided.

[0079] 2. Employing the cooperation of the rotating part 41, sealing main plate 42, sealing side plate 43, soft sealing plate 44, and tension spring 45, when sampling is required through the dropper body 1, the adsorption head 11 is first squeezed, causing the gas inside to pass through the connecting groove 12 and exert a squeezing effect on the soft sealing plate 44, sealing main plate 42, and sealing side plate 43. This stretches the tension spring 45, causing elastic deformation. Consequently, the sealing side plate 43, sealing main plate 42, soft sealing plate 44, and connecting groove 12 rotate along the rotating part 41. The sealing main plate 42, sealing side plate 43, soft sealing plate 44, and sealing side plate 45 are then compressed. Plate 43, soft sealing plate 44 are separated from the inner wall of the connecting groove 12, allowing the gas inside the adsorption head 11 to flow out through the connecting groove 12, forming a negative pressure space. Then, the bottom of the dropper body 1 is placed in the liquid to be sampled, and the adsorption head 11 is released to complete the sampling. After the sampling is completed, the internal and external air pressures are balanced. Under the action of the tension spring 45, the sealing main plate 42, sealing side plate 43 and soft sealing plate 44 rebound to seal the connecting groove 12, preventing liquid from entering the interior of the adsorption head 11, which would cause the adsorption head 11 to be corroded and reduce the service life of the device.

[0080] When sampling is required through the dropper body, first squeeze the adsorption head, causing the gas inside to compress the soft sealing plate, main sealing plate, and side sealing plate through the connecting groove. This stretches the tension spring, causing elastic deformation. The side sealing plate, main sealing plate, soft sealing plate, and connecting groove rotate along the rotating part, separating them from the inner wall of the connecting groove. This allows the gas inside the adsorption head to flow out through the connecting groove, creating a negative pressure space. Then, place the bottom of the dropper body into the liquid to be sampled, and release the adsorption head to complete the sampling. After sampling, the internal and external gas pressures balance. Under the action of the tension spring, the main sealing plate, side sealing plate, and soft sealing plate rebound to seal the connecting groove, preventing liquid from entering the adsorption head and causing corrosion, thus reducing the lifespan of the device.

[0081] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0082] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0083] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A device for taking a sample for chemical analysis, characterized in that The utility model provides a drip bottle, including drip bottle body (1) and fixed support (2), drip bottle body (1) includes main pipe (13), fixed support (2) includes fixed seat (22), the fixed seat (22) is seted up with the clamping groove (21) on, the main pipe (13) is worn in the clamping groove (21), the clamping groove (21) still is provided with the clamping mechanism (3) in, the clamping mechanism (3) includes at least two opposite setting movable clamping plate (31) and the elastic compression device of cooperation with movable clamping plate (31), movable clamping plate (31) is hinged on the inner wall of clamping groove (21), one end of elastic compression device is connected on the inner wall of clamping groove (21), the other end is connected on movable clamping plate (31), and the main pipe (13) is clamped and fixed by movable clamping plate (31). The movable clamping plate (31) is the arc plate that protrudes towards the main pipe (13), and in the cross section through the central axis of the clamping groove (21), the first end of the movable clamping plate (31) is hinged to the inner wall of the clamping groove (21), and the second end of the movable clamping plate (31) can swing relative to the fixed seat (22). The elastic compression device includes a limiting rod (37), a push rod (34), and an elastic tension member (35). The side of the movable clamping plate (31) facing the elastic compression device is provided with a sliding rail (33). The sliding rail (33) extends from the hinged end of the movable clamping plate (31) to the swing end. The two opposite sides of the limiting rod (37) are respectively provided with the push rod (34). The ends of the two push rods (34) arranged in pairs are in sliding fit with the sliding rail (33). The elastic tension member (35) is arranged between the two push rods (34) arranged in pairs and provides elastic tension force to the two push rods (34) to make them close to each other.

2. The device according to claim 1, wherein The surface of the movable clamping plate (31) facing the main pipe (13) is provided with a soft layer (32). The movable clamping plate (31) forms clamping fit with the main pipe (13) through the soft layer (32).

3. The device according to claim 2, wherein The surface of the movable clamping plate (31) facing the main pipe (13) is provided with an embedding groove (311). The soft layer (32) is embedded in the embedding groove (311). The surface of the soft layer (32) is flush with the surface of the movable clamping plate (31).

4. The device according to claim 1, wherein The swing end of the movable clamping plate (31) is provided with a protection structure (312). The protection structure (312) has an arc surface protruding towards the main pipe (13). The arc surface protrudes from the surface of the movable clamping plate (31) facing the main pipe (13).

5. The device according to claim 4, wherein The protection structure (312) is a cylinder or a ball head.

6. The device according to claim 1, wherein The end of the limiting rod (37) close to the movable clamping plate (31) is provided with a limiting block (36). The surface of the limiting block (36) facing the movable clamping plate (31) is an outward convex arc surface.

7. The device according to claim 6, wherein One end of the elastic tension member (35) is fixedly connected to the push rod (34), and the other end of the elastic tension member (35) is fixedly connected to the limiting block (36). The elastic tension members (35) on both sides of the limiting rod (37) are symmetric about the center line of the limiting rod (37).

8. The device according to claim 7, wherein A sliding connection block (38) is slidably sleeved on the limiting rod (37), one end of the push rod (34) is hinged to the sliding connection block (38), the other end of the push rod (34) is in sliding fit with the sliding rail (33), and an elastic member (39) is arranged between the sliding connection block (38) and the inner wall of the clamping groove (21). The elastic member (39) provides an elastic force for the sliding connection block (38) to slide towards the movable clamping plate (31).

9. The device according to claim 8, wherein The limiting rod (37) is hinged to the inner wall of the clamping groove (21).

10. The device according to claim 1, wherein The fixed support (2) further comprises a base (26) fixedly connected between the fixed seat (22) and the connecting rod (23), a boss (24) is arranged on the base (26), the boss (24) is provided with a containing groove (25) corresponding to the clamping groove (21), and the bottom of the dropper body (1) is located in the containing groove (25).

11. The device according to any one of claims 1 to 10, wherein The dropper body (1) further comprises an adsorption rubber head (11), a communication groove (12) is arranged on the head of the main pipe (13), the adsorption rubber head (11) is sleeved outside the head, the inner cavity of the adsorption rubber head (11) is in communication with the pipe cavity of the main pipe (13) through the communication groove (12), and a one-way conduction structure (4) is arranged at the communication groove (12). The one-way conduction structure (4) opens the communication groove (12) when fluid flows from the adsorption rubber head (11) to the pipe cavity, and closes the communication groove (12) when fluid flows from the pipe cavity to the adsorption rubber head (11).

12. The device according to claim 11, wherein The one-way conduction structure (4) comprises a rotating part (41), a sealing part and an elastic recovery part, the rotating part (41) is rotatably installed on the main pipe (13), the sealing part is arranged at the communication groove (12) and fixedly connected with the rotating part (41), and the elastic recovery part is connected between the sealing part and the main pipe (13) and provides an elastic force for the sealing part to seal the communication groove (12).

13. The device according to claim 12, wherein The head of the main pipe (13) is provided with a baffle (131), the communication groove (12) is arranged on the baffle (131), the sealing part is arranged on the side of the baffle (131) facing the pipe cavity and is stopped by the baffle (131).

14. The device according to claim 13, wherein An installation groove (132) is arranged on the inner wall surface of the baffle (131) facing the pipe cavity, an installation block (133) is arranged in the installation groove (132), and the rotating part (41) is rotatably arranged on the installation block (133).

15. The device according to claim 13, wherein The baffle (131) is provided with a stepped groove (134) on one side facing the lumen, the sealing part includes a sealing main plate (42) and a sealing side plate (43), the sealing main plate (42) is shaped to match the communication groove (12) and is arranged correspondingly, the sealing side plate (43) is fixedly connected with the sealing main plate (42) and is arranged correspondingly to the stepped groove (134), when the sealing main plate (42) enters the communication groove (12), the sealing side plate (43) enters the stepped groove (134) and is stopped outside the step of the stepped groove (134).

16. The device according to claim 15, wherein The sealing main plate (42) is provided with a soft sealing plate (44) on one side facing the inner cavity of the adsorbing rubber head (11), when the sealing part seals the communication groove (12), the intersection of the sealing main plate (42) and the soft sealing plate (44) is flush with the stepped surface of the stepped groove (134).

17. The device according to any one of claims 12 to 16, wherein The elastic recovery part includes a tension spring (45), the tension spring (45) is located in the inner cavity of the adsorbing rubber head (11), one end of the tension spring (45) is fixedly connected with the main pipe (13), and the other end of the tension spring (45) is fixedly connected with the sealing part.

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