288results about "Closure using stoppers" patented technology

The utility model provides a heat preservation box which comprises a box body, one side of the box body is provided with a box cover hinged to the box body, the other side of the box body and the box cover are locked through a lock catch device, and a sealing ring is arranged between the box body and the box cover. The lock catch device comprises an upper fastener, a lower fastener and a lower fastener, and the upper fastener is arranged on one side, close to the box body, of the box cover; one end of the positioning piece is hinged to the upper fastener, and the other end of the positioning piece is adjusted to be locked to the box body, so that the box cover and the box body enter a locked state; wherein the upper buckling piece and the positioning piece are made of materials with the same hardness, and when the box cover and the box body are in a locked state, the sealing ring provides pre-tightening force for the positioning piece and the box body to abut against each other. The utility model solves the technical problems that as the lock catch device provides pretightening force through the upper fastener, the material of the upper fastener relative to the positioning piece is softer, the upper fastener is easy to damage after being buckled for multiple times, and the damaged part is not easy to replace.

The application provides a rotating blocking mechanism of a capping machine, which enables a material pipe to enter the rotating blocking mechanism for capping operation without affecting the normal material conveying of a conveying line, and improves the conveying efficiency of the conveying line. The rotating blocking mechanism comprises a conveying line, rotating wheels, blocking rings and a plurality of clamping units. The ends of the conveying line are respectively provided with rotating shaft supports in front. The rotating shafts are respectively supported in the center holes of the rotating shaft supports on both sides and are respectively connected with the first rotating wheels and the second rotating wheels in the back. The first rotating wheels correspond to the capping end of the material pipe, and the second rotating wheels correspond to the non-capping end of the material pipe. The outer rings of the first rotating wheels and the second rotating wheels are uniformly and circularly provided with material pipe embedding grooves, and the material pipe embedding grooves on both sides are oppositely arranged in pairs.

The utility model relates to a bottle cap assembly and a container, the bottle cap assembly comprises an inner plug piece, an inner cap piece, an inner sleeve piece and an outer piece, the inner plug piece is arranged on a first liquid flow opening of the inner sleeve piece, the inner cap piece is plugged on a second liquid flow opening of the inner sleeve piece, the inner sleeve piece comprises a first inner sleeve and a second inner sleeve which are made of different materials, and the outer piece is arranged in the first inner sleeve; the second inner sleeve is arranged on the peripheral face of the first inner sleeve in a surrounding mode, and the outer part is arranged on the inner cover part and the second inner sleeve in a sleeving mode and attached to the peripheral face of the second inner sleeve. According to the bottle cap assembly and the container, the first inner sleeve and the second inner sleeve are made of different materials, so that the first inner sleeve connected with the inner plug piece and the inner cap piece can be made of materials which do not affect contact with liquid, and the safety requirement is met; and the second inner sleeve connected with the outer part can be made of a material which is excellent in temperature resistance and impact resistance and is prohibited from being in contact with liquid, so that the inner sleeve part is not easy to pull out, and the bottle body or the outer part can be damaged when the inner sleeve part is forcibly pulled out, and the aim of preventing counterfeiting is fulfilled.

The utility model discloses sunflower seed packaging equipment, which relates to the technical field of sunflower seed packaging and comprises a medicament storage tank, a nitrogen storage tank and a storage device. An injection pipeline on the nitrogen storage tank is used for conveying nitrogen to the cavity below, and the lower surface of the lifting plate is fixedly connected with a piercing needle used for piercing the sealing plate. The sunflower seed packaging equipment is provided with the medicament storage tank and the nitrogen storage tank, the medicament storage tank and the nitrogen storage tank are divided into the upper cavity and the lower cavity through the sealing plate arranged in the storage tank, the two injection pipelines inject nitrogen and oxygen into the two cavities respectively, and seeds are stored in the cavity where the nitrogen is injected. The content of oxygen in the seeds is reduced by injecting nitrogen, so that the growth of the seeds can be inhibited to a certain extent in the storage process, and the storage time of the seeds can be prolonged.

The invention relates to the technical field of wine lifters, and discloses a novel portable wine lifter which comprises a container, a water outlet assembly is fixedly connected to the inner wall of the bottom end of the container, a water inlet assembly is fixedly connected to the inner wall of the bottom end of the container, a lifting handle is fixedly connected to the top end of the container, and the structure of the water outlet assembly is the same as that of the water inlet assembly. The water outlet assembly comprises a water outlet blocking outer pipe, the bottom end of the water outlet blocking outer pipe is fixedly connected with the inner wall of the bottom end of the container, the inner wall of the top end of the water outlet blocking outer pipe is fixedly connected with a pressure spring, the bottom end of the pressure spring is fixedly connected with a sealing plug, and a water inlet hole is formed in the side face of the water outlet blocking outer pipe. A pull rod is fixedly connected to the top end of the sealing plug, a pull ring is fixedly connected to the top end of the pull rod, and a water outlet hole is formed in the bottom end of the water outlet plug outer pipe. Opening and closing of the water outlet assembly and the water inlet assembly are controlled through fingers, operation is easy, and liquid inlet and liquid outlet are accurately controlled.

A container system comprises a container with a storage compartment and a lid assembly to seal the container. The lid assembly includes an upper portion and a lower portion that are moveably coupled to one another. The upper portion includes a vent gasket that contacts the lower portion to seal a vent opening in the lower portion, and the lower portion includes a lower gasket to seal the lower portion to the container. When removing the lid assembly, the upper portion is moved relative to the lower portion a predetermined amount causing the vent gasket to be free of contact from the lower portion creating a vent path for air to escape from the storage compartment.

Removable sealing device for an opening of a container for detecting property of a matter contained in said container, said device comprising a body that comprises a first portion and a second portion, wherein the second portion is intended in use to be coupled to the container and comprises a reversible expansion mechanism for determining an expansion of the second portion; wherein the actuation mechanism is kinematically connected to the reversible expansion mechanism; and wherein the device comprises at least one detection element of said property of the matter, the detection element being configured to emit in use a first electromagnetic radiation from the second end to perform a detection inside the container; detect in use a second electromagnetic radiation which hits the second end and is emitted by matter irradiated by said first electromagnetic radiation and generate an identification signal of the second detected electromagnetic radiation and representative of the property of the irradiated matter.

The present invention relates to a new process for manufacturing cylindrical cork bodies and the final product resulting from this new process for manufacturing closures for beverages (e.g., carbonated wines, still wines, beers, etc.) or washers which are used in multi-piece cork stoppers and which is based on the lamination of a sheet of natural cork after it has been cooked and flattened (1), with strips of a thickness of between 0.06 mm and 2 mm (2), the individual cleaning of each strip (3), the gluing of the thin strips with specific food-grade glues used in the cork sector, which after being selected (4), are glued in such a way that the natural irregularities of the cork are offset, making it possible to compose a homogeneous cork parallelepiped (5).Next, the parallelepiped composed of microlayers of cork is sliced ​​and tubed according to the traditional manufacturing process for natural corks or washers. The tubing in the production process can be carried out parallel to the direction of the laminated sheets (6), perpendicularly (7), or obliquely (8). The corks and washers produced by this new manufacturing process exhibit all the physical and visual characteristics of natural cork.

According to the stem cell culture solution pollution-free collection module, the sterile isolation and vacuumizing process of the internal environment of a collection bottle is achieved through a collection assembly, the function that air in the bottle is pumped out firstly and then the stem cell culture solution is injected is achieved through the coaxial inner needle and outer needle design of an infusion assembly, and the stem cell culture solution is collected through a multi-stage self-sealing structure after the needles are pulled out. And the collection bottle is automatically closed and sealed after liquid injection is completed, so that the pollution-free stem cell culture solution collection module which is pollution-free in the whole process and is closed and safe is realized. The device is characterized in that the device comprises a collecting assembly and an infusion assembly, the infusion assembly is inserted into the collecting assembly, the infusion assembly injects a stem cell culture solution into the collecting assembly, and the collecting assembly comprises a collecting bottle, a sealing plug, a disposable sterile unsealing film, a duckbill valve, a check valve and a multi-layer self-resetting diaphragm; and the sealing plug is clamped at the opening end of the collecting bottle.

The utility model discloses a reagent bottle safety connecting device, including bottle stopper, anti-sticking connecting piece and connecting rope, the bottle stopper is used for inserting in the inlet end of reagent bottle, the anti-sticking connecting piece wraps the outer surface of the bottle stopper and is detachably connected with the bottle stopper, the connecting rope passes through the top of the bottle stopper, the anti-sticking connecting piece is detachably connected with the bottle stopper, and the connecting rope is detachably connected with the anti-sticking connecting piece. The anti-sticking connecting piece is movably arranged on the connecting rope, and the connecting rope can be connected with bottle plugs of other reagent bottles. The utility model further discloses a reagent bottle assembly which comprises the reagent bottle and the reagent bottle safety connecting device. According to the utility model, the bottle plug has an anti-loss function, and the bottle plug can be effectively prevented from being adhered to the inlet end of the reagent bottle.

A closure assembly has a monolithic plastic fitment with a base portion and a tubular neck extending from the base portion for dispensing of product from a container body. A plug is connected via a frangible peripheral connection to the top end of the neck so as to close the product passage. The closure assembly further has a plastic cap body with a skirt portion defining an open-ends bore, which is mounted over the tubular neck and the plug. The skirt portion has a longitudinal rib. The plug has an outwardly projecting tab received in a longitudinal groove to provide a rotational locking and axial locking formations, distinct from the tab and groove, lock the plug and cap body in axial directions.

The utility model relates to the technical field of rubber plugs, and discloses a high-sealing-performance rubber plug which comprises a top cover, an auxiliary structure is fixedly connected to the center of the lower end face of the top cover, a connecting structure is arranged at the position, located on the outer side of the auxiliary structure, of the lower end of the top cover, and a ferrule is arranged at the position, close to the edge, of the center of the upper end face of the connecting structure. The upper end and the lower end of the ferrule are fixedly connected to the lower end face of the top cover and the upper end face of the connecting structure respectively, the auxiliary structure comprises a lower pressing ring, the upper end of the lower pressing ring is fixedly connected to the lower end face of the top cover, and a connecting groove is formed in the upper end face of the connecting structure located on the lower side of the auxiliary structure. The lower pressing ring and the connecting groove are matched with each other. According to the connecting structure, the auxiliary structure is arranged, after the connecting structure is used, the top cover is pressed downwards to enable the lower pressing ring to be inserted into the connecting groove, so that the side wall of the lower connecting body continues to be ejected outwards, and the sealing performance of the connecting position is improved on the original basis.

A method for manufacturing a closure constructed for being inserted and securely retained in a portal-forming neck of a product-retaining container is provided. Such method may include intimately combining a plurality of particles comprising cork and having a specified particle size distribution with a plastic material including one or more thermoplastic polymers, optionally in combination with other constituent(s) to form a composition, heating the composition to form a melt, extruding or molding a closure precursor from the melt to provide a specified water content range, and optionally cutting and / or finishing the closure precursor. A composition for use in manufacturing a closure for a product-retaining container includes a plurality of particles comprising cork and having a specified particle size distribution with a plastic material including at least one thermoplastic polymer, optionally with other constituent(s). A closure produced from the composition and use of a closure are also provided.

The utility model discloses a sample storage device for soil heavy metal detection, which comprises a storage box, the upper surface of the storage box is provided with a box cover, the upper surface of the box cover is fixedly connected with a handle, the front surface of the box cover is fixedly connected with a fixed box, the outer surface of the fixed box is provided with a sliding chute, and the sliding chute is fixedly connected with the handle. The inner surface of the sliding groove is fixedly connected with a sliding rod, and the outer surface of the sliding rod is provided with a first spring. By arranging a fixing box, a sliding rod, a first spring, an L-shaped inserting block, a soft rubber pad and other structures, a silica gel plug can be integrally pressed through a pull ring after a box cover is closed, so that the sealing performance of a sample tube is improved, and then the possibility of soil leakage is effectively prevented, and by arranging an ejector rod, a sliding column, a limiting ring, a second spring, an ejector plate and other structures, the sealing performance of the sample tube is improved. A soil sample stored in the sample tube can be easily ejected out according to needs, so that the subsequent detection efficiency of heavy metals in the soil is improved.

The invention relates to a method for closing a container (7) containing fibers with a closure (1) in a closure position.The method comprises providing a fiber-containing container filled with product and comprising a neck region (8) with an inner surface (9) and an outer surface (10) and with an outlet opening (11), and arranging a closure on the container, wherein the closure comprises a cavity (5) with a circular cross-section for insertion into the outlet opening and at least partially arranged adjacent to the inner surface of the neck region, and an outer wall region (2) spaced apart from the cavity (5) for at least partially arranged adjacent to the outer surface of the neck region, wherein the cavity is inserted into the outlet opening and is arranged at least partially adjacent to the inner surface of the neck region, and wherein the outer wall region spaced apart from the cavity is arranged at least partially adjacent to the outer surface of the neck region.The method further comprises connecting the closure to the container to seal the container, wherein the connection includes a form-fit, force-fit, and / or material-fit connection. The invention also relates to a fiber-containing container that is sealed with a closure in a closed position and to a device for carrying out the method.

A fluid port assembly includes a tube configured to be positioned with a fluid container to provide access to a fluid contained in the fluid container. The tube includes at least one annular tube recess. The at least one annular tube recess forms a plurality of inner tube surfaces extending circumferentially within the tube. The assembly includes a plug configured to be positioned within the tube to releasably seal the fluid container and contain the fluid within the fluid container. The plug includes at least one annular plug protrusion, and the at least one annular plug protrusion forms a plurality of outer plug surfaces extending circumferentially around the plug. The plurality of inner tube surfaces of the tube engage the plurality of outer plug surfaces of the plug to seal the fluid container.

The invention relates to a can lid (1) comprising: a metal lid surface (12) having a geometric center (15) and an outer edge (17); an opening area (19) is arranged on the surface of the metal cover; a sealing frame (22) connected with the surface of the metal cover surrounds the opening area; and a closing unit (23) pivotally attached to the metal lid surface or the sealing frame about a pivot axis (25) and designed to close the opening region in a closed position in which the closing unit pivots towards the sealing frame and to release the opening region for a drinking process in an open position in which the closing unit pivots away from the sealing frame. The opening region has a first edge point (39) which is closer to the outer edge of the metal lid surface than a second edge point, with a drinking movement plane (40) extending perpendicular to the metal lid surface extending through the geometric center of the metal lid surface and through the first edge point, and wherein a pivot plane (45) extending perpendicular to the pivot axis extends perpendicular to the metal cover surface. The pivot plane forms an angle other than 0 DEG with respect to the drinking motion plane.

The utility model relates to vaccine bottle technical field, concretely is a kind of vaccine storage bottle, including glass bottle, the upper end inner wall of glass bottle is engaged with and is connected with rubber stopper, the upper end outer wall of glass bottle is equipped with aluminium cap, rubber stopper is located in aluminium cap, aluminium cap's surface sliding sleeve has isolating cover, aluminium cap's surface is equipped with guide slot, aluminium cap's surface fixedly assembled with connecting piece, connecting piece is fixedly connected with isolating cover, the outer wall of isolating cover fixedly assembled with pull ear.The utility model, through isolating cover, connecting piece and guide slot etc. Component cooperation, isolating cover moves and will drive connecting piece to move, connecting piece will pull aluminium cap, the guide slot of aluminium cap surface is set up to can conveniently break aluminium cap to pull apart at this time, to damage the integrity of aluminium cap, when needing to remove rubber stopper, directly the aluminium cap that remains is broken and can remove aluminium cap, then can pull out rubber stopper from glass bottle, in this process, it is simple and convenient to operate, to improve the convenience when using vaccine bottle.

The utility model relates to the technical field of vent plugs, in particular to a vent plug which comprises a plug body and a plug cover connected with the lower end of the plug body, the plug body comprises an exhaust port connecting pipe used for being connected with an exhaust pipe, a membrane frame is fixedly arranged at the lower end of the exhaust port connecting pipe, and a waterproof breathable membrane is attached to the lower end face of the membrane frame. A fixing ring is further arranged at the lower end of the exhaust port connecting pipe, the edge of the waterproof breathable film is attached to the lower end face of the fixing ring, a plurality of clamping strips are arranged at the lower end of the fixing ring in the circumferential direction at intervals, and the lower ends of the clamping strips are inserted into the plug cover. At the moment, the waterproof breathable film below the film frame can prevent liquid from overflowing through the exhaust port, the plug cover can effectively relieve impact of the liquid on the waterproof breathable film when the container shakes, and normal use of the waterproof breathable film is guaranteed.

The utility model belongs to the technical field of daily supplies, and discloses a shampoo bottle with a separated inner container easy to replace, the shampoo bottle comprises a shampoo bottle main body and the inner container, through a scraping ring, a sealing ring and a collecting hopper, when the inner container is replaced, a bottom feeding and discharging mode is adopted to replace a traditional top inclined discharging mode, and the service life of the shampoo bottle is prolonged. According to the device, the situation that contents in the inner container are discharged and drop due to inclination during discharging can be effectively avoided, pollution to a bottle body is avoided, meanwhile, when the inner container moves up and down, a straw can be scraped for multiple times through a sealing ring and a scraping ring on the surface of a collecting hopper, then the contents on the surface of the straw are removed, and the service life of the straw is prolonged. The part of content is reserved in the inner container, subsequent treatment is facilitated, leakage pollution of the content caused by contact between the straw and the inner wall of the bottle body when the straw falls off from the inner container is avoided, the cleanliness of the bottle body is improved, better use is facilitated, the overall using effect is improved, and the bottle has the advantages of being clean in replacement and small in replacement pollution.

The utility model discloses a sealant storage device which comprises a storage box. A discharging screw rod is arranged in the middle of the storage box, an inner sealing groove is fixedly connected to the middle of the bottom surface of the storage box, and a discharging opening is fixedly connected to the lower end of the inner sealing groove; wherein the middle of the limiting groove is slidably connected with a lifting rod, the bottom of the lifting rod is fixedly connected with an inner sealing plug, the middle of the inner sealing plug is provided with a positioning block, the top end of the lifting rod is rotatably connected with a first connecting seat, and the middle of the first connecting seat is in threaded connection with an opening and closing screw rod; wherein a sliding rod is slidably connected to the middle of the lifting rod, an outer sealing plug is fixedly connected to the bottom of the sliding rod, a guide rod is slidably connected to one side of the lower end of the sliding rod, and a guide block is slidably connected to one side of the guide rod. The residue of the sealant at the discharge hole is conveniently reduced, and the secondary sealing effect is achieved.

To suppress fingers slipping when attaching / detaching a cap.SOLUTION: A cap 4 is used being mounted on a mouth tool base body 2 provided at an opening portion of a container. The cap 4 includes: a bottomed cylindrical lid body part 41 inserted inside the mouth tool base body 2; a flange part 42 extending radially outward from an upper end part of the lid body part 41; and an outer cylinder part 43 extending downward from an outward end part of the flange part 42. The outer cylinder part 43 includes: an annular cylinder body part 50; and four first protrusion parts 51 protruding radially outside from a cylinder body part 50. The first protrusion parts 51 are formed at an equal interval at each 90 degrees in the circumferential direction of the outer cylinder part 43.SELECTED DRAWING: Figure 1

Cosmetic product packaging assembly, packaging and dispensing device, refill and associated assembly method. The assembly comprises: a bottle (16) having a neck (26) having an internal surface (38) defining an access passage to an internal volume (28), a connector (18) comprising a barrel (60), a collar (62) and at least one radial projection extending from the barrel (60). The internal surface (38) of the neck (26) defines at least one concave region (48). The radial projection(s) are adapted to bear against the concave region (48) of the internal surface (38) when the collar (62) is positioned against an edge (42) of the neck (26). The concave region (48) cooperates with the radial projection(s) to generate an axial force exerted by the collar (62) on the outer edge (42) towards the internal volume (28). Figure for the summary: Figure 3

A closure system for closing a container opening is disclosed that includes a stopper member, a cage member for mounting to a container, a cover member reversibly mountable to the cage member, and an integrity visualization member. The stopper member has a plug portion to fit into the container opening and a cover portion to abut a boundary surface of the container opening. The plug portion of the stopper member is fitted into the opening of the container and the cage member is mounted to the container. The cage member applies a force to the cover portion to push the cover portion onto the boundary surface of the container opening. The cover member covers an aperture of the cage member when mounted to the cage member. The integrity visualization member indicates an integrity of the closure system and is positioned between the cover portion and the cage member.

The utility model discloses a rotary filling, nitrogen charging and plugging device, which relates to the technical field of filling equipment in pharmaceutical machinery, and comprises a rack 9, a bottle conveying mechanism 2, a bottle separating mechanism 3, a nitrogen charging and plugging mechanism 4, a plug arranging mechanism 1 and a plug taking, nitrogen charging, filling and pressing mechanism 8, the bottle feeding mechanism 2 is arranged on the front side of the upper portion of the rack 9, and the bottle separating mechanism 3 is arranged on the front side of the right end of the bottle feeding mechanism 2. The nitrogen charging and plugging mechanism 4 is arranged on the rear side of the right part of the bottle conveying mechanism 2, and the plug arranging mechanism 1 is arranged on the right side of the nitrogen charging and plugging mechanism 4; the plug taking, nitrogen charging, filling and pressing mechanism 8 is arranged at the middle left part of the upper part of the rack 9, and the right part of the plug taking, nitrogen charging, filling and pressing mechanism 8 is respectively connected with the nitrogen charging and plugging mechanism 4 and the bottle conveying mechanism 2. The nitrogen filling machine has the characteristics of simple process, lower use cost, smaller occupied area of equipment, capability of greatly improving the quality of filled medicines and the like, and can be used for nitrogen filling of high-added-value products such as glucose, antibiotics, amino acid, fat emulsion, oral liquid, nutrient solution, biological agents and the like.

Disclosed is a refillable discharge container and a refill container. The refillable discharge container of the present invention includes an outer container having a receiving space formed on the inside thereof and opened upward, an inner container having a storage space formed on the inside thereof and opened upward, and inserted into the receiving space, a holder including a holder body and a support protrusion, and coupled to the open upper portion of the inner container, an inner cap having a cap passage formed therethrough in the up-down direction, and coupled to the open upper portion of the outer container in a detachable manner, and the holder pressing the inner container in a state of being coupled to the outer container, a shoulder having a through hole formed in the upper portion thereof, and coupled to the outside of the inner cap, a button having a discharge hole formed in the upper portion thereof, and coupled to the through hole of the shoulder in a manner of passing through the through hole, and movable in the vertical direction, and a pump module adjacent to the holder passage and the cap passage, and including an elastic member to elastically support the button against the cap.

The utility model relates to the technical field of preservation pipes, in particular to a wide-mouth preservation pipe which comprises a preservation pipe body, a communicating pipe and a label, the label is fixedly connected to the outer wall of the preservation pipe body, the connecting pipe is fixedly communicated to the top end of the preservation pipe body, a wide-mouth preservation pipe structure is arranged above the communicating pipe, and the communicating pipe is connected with the wide-mouth preservation pipe structure. A pipe body reinforcing structure is arranged on the inner side of the storage pipe body. According to the wide-mouth storage pipe, the sealing plug can be screwed into the conical wide-mouth cavity in a rotating mode, then the sealing plug drives the top plate to fall to the position above the wide-mouth cavity to achieve sealing, an operator can conveniently tighten the sealing plug with force through the twisting block, and the filling head can be pushed to the top end of the communicating cavity to enhance sealing performance when the sealing plug is screwed into the threaded groove; the inner side tightening and sealing structure is utilized to facilitate opening and closing, meanwhile, the open type wide-mouth cavity design facilitates sampling and sample sending operation, spilling is not prone to occurring, and the use convenience of the wide-mouth storage pipe is improved.

Bottle closure made of natural cork, agglomerated cork, composite cork or another elastic, gas-tight material with a head and shaft region, characterized in that a non-continuous cavity is provided substantially in the head region and optionally partially in the shaft, which can accommodate a device for generating acoustic signals, sound, music, noises or speech as well as optical signals (e.g. LED, RGB or similar), wherein the device is designed such that it can be activated upon removal and / or opening of the bottle closure and / or by external control in order to emit acoustic and / or optical signals, and wherein the closure meets the technical requirements applicable to sparkling wine corks with regard to pressure resistance, mechanical strength, fracture strength and gas tightness.

A chemiluminescence immunodetection kit comprises a reagent tube, a reagent cover, a kit body, a movable seat, a gear disc, a central shaft rod, a position control shaft rod and a locking block, the upper portion of the kit body is connected with a handle, the kit body is connected with a U-shaped plate through screws, the screws are sequentially connected with the kit body and the U-shaped plate, the movable seat is attached to the inner side of the U-shaped plate, and the movable seat is provided with a plurality of containing grooves. The movable seat is connected with the lower part of the fixed support rod, the upper part of the fixed support rod is provided with a bearing plate, the bearing plate is provided with a plurality of placing holes, the placing holes and the placing grooves are matched with reagent tubes, the reagent tubes penetrate through the placing holes, the lower parts of the reagent tubes are connected with the placing grooves, the upper parts of the reagent tubes are connected with reagent covers, and the reagent covers are provided with sealing plugs which are connected with the reagent tubes.