51results about How to "Quick seal" patented technology

The application belongs to the technical field of cable manufacturing, and specifically discloses a composite cable and a preparation method thereof, which comprises an inner sheath, the inner sheath is internally provided with connecting sleeves, the connecting sleeves are internally provided with connecting cores, the inner sheath is internally provided with first filling layers at the outer walls of the connecting sleeves, the outer wall of the inner sheath is circumferentially provided with control cores, the outer wall of the inner sheath is provided with an insulating layer, the control cores are located in the insulating layer, the gap between the control cores and the insulating layer is filled with a second filling layer, the second filling layer is connected with the outer wall of the inner sheath, the middle part of the outer wall of the insulating layer is provided with a reinforcing shielding layer, and the outer wall of the insulating layer is provided with a buffer sleeve. The application improves the mechanical reliability, anti-interference ability and service life of the cable in a poor environment.

The utility model belongs to gas detection technical field, concretely is small flow gas detection device based on valve opening degree regulation, including valve body, still include: gas detection subassembly, set up at valve body top, flow detection subassembly, set up in valve body outer wall and with its inside intercommunication, baffle, set up in valve body inner wall middle segment, and its top is provided with ladder hole, first limit frame, fixed setting in valve body inside bottom, sealing assembly, through setting on first limit frame, and its top cooperates with ladder hole, first sealing plate, set up in valve body one end, the utility model provides small flow gas detection device based on valve opening degree regulation, can carry out quick sealing to valve body when needing closing valve body in the emergency, relative to the speed of screw rod closed mode is faster, adapts the gas flow demand of quick change, especially in small flow gas detection, can realize more accurate control, simple structure simultaneously.

The ball valve convenient to install comprises a valve body, installation assemblies are arranged on the left side and the right side of the valve body, each installation assembly comprises a clamping spring and a pipe, the clamping springs are detachably installed on the inner wall of the valve body and attached to the inner wall of the valve body, the outer wall of each pipe is connected with a sealing rubber ring in a sliding mode, and the outer wall of each pipe is fixedly connected with a limiting ring. A first nut is slidably connected to the outer wall of the pipe, the sealing rubber ring and the first nut are located on the two sides of the limiting ring in the length direction correspondingly, and the sealing rubber ring is located between the clamping spring and the limiting ring. Through the installation assembly, the pipe is inserted into an inner cavity of the valve body, the first nut is tightened, and the limiting ring and the pipe are pushed to be further inserted into the inner cavity of the valve body; under the limitation of the limiting ring and the clamping spring, the sealing rubber ring is fixed, so that the gap between the pipe and the valve body is sealed, by means of the structure, rapid installation and sealing of the pipe are achieved, the installation time of the pipe can be shortened, meanwhile, installation is effortless, and the flexibility of the device is improved.

The invention belongs to the field of oil and gas exploration and development, and relates to an oil drilling and workover well mouth centering and aligning device and method.The device comprises an upper flange and a lower flange, the upper flange is connected with a rotary control head, the lower flange is connected with an annular blowout preventer, a sealing device is arranged between the upper flange and the lower flange, and the upper flange and the lower flange are each sleeved with a pressing plate; the pressing plate on the upper flange and the pressing plate on the lower flange are detachably connected through a fastening device, and adjusting bolts used for adjusting the upper flange to move in the horizontal direction are arranged on the pressing plate on the upper flange and the pressing plate on the lower flange. A flange position adjusting device is designed, horizontal multi-direction free adjustment can be simply and rapidly achieved, a wellhead can be rapidly, safely and effectively corrected, and vertical centering alignment of the center of wellhead devices such as a rotary control head of the device and a crown block and a traveling block is achieved.

The utility model discloses a shunting device of a heat exchanger, and relates to the technical field of heat exchanger equipment. The pipe comprises a pipe body, a main connector is fixedly arranged at the top of the pipe body, shunting connectors are fixedly arranged at the bottom of the pipe body side by side at equal intervals, and end panels are symmetrically and fixedly arranged at the two ends of the pipe body. According to the end cover pressing device, the abutting head is driven to move towards the pressing support by rotating the abutting screw in the forward direction, the tail end of the pressing support can be pressed through the abutting head, the pressing support rotates downwards around the connecting shaft, the extrusion head abuts against the outer wall of the end cover, the end cover can be pressed on the end face plate, and therefore the end cover can be tightly pressed. The end opening of the pipe body is rapidly sealed through the end cover and the sealing gasket, the pressing support can rotate upwards around the connecting shaft by reversely rotating the abutting screw rod, the end cover can be turned downwards around the hinge shaft to be opened, therefore, the end opening of the pipe body can be rapidly opened, operation is convenient and fast, and then personnel can conveniently overhaul and maintain the interior of the pipe body.

This application provides a temporary storage device for liquid bagged samples. The storage box is box-shaped with an opening at the top. A slide rail is located at the top of the storage box. The sealing mechanism includes a male sealing rod and a female sealing rod slidably mounted on the slide rail. The male and female sealing rods can slide closer together to clamp the top opening of the liquid bag, or move away from each other to release the clamping force on the top opening of the liquid bag. A tightening mechanism is located between the corresponding male and female sealing rods. This application, through the cooperation of multiple sealing and locking mechanisms, utilizes the male and female sealing rods to clamp the top opening of the liquid bag, forming a uniform and tight clamping force at the bag opening. Because the sealing mechanism can slide along the slide rail, it can be flexibly adjusted according to the width of the liquid bag, ensuring that liquid bags of different sizes can be effectively sealed, avoiding gaps caused by incomplete sealing that allow contaminants to enter, greatly reducing the risk of sample contamination, and ensuring the accuracy of test results.

The utility model discloses an automatic packaging system for furnace black production, and relates to the technical field of furnace black packaging, the automatic packaging system for furnace black production comprises a bottom frame and a filling machine, the upper side surface of the bottom frame is fixedly connected with two mounting plates, the surfaces of the close sides of the two mounting plates are both provided with first sliding grooves, and the first sliding grooves are provided with second sliding grooves; a limiting rod is fixedly connected between the inner walls of the upper side and the lower side of the first sliding groove, displacement frames are arranged on the surfaces of the sides, close to each other, of the two mounting plates, sliding blocks are fixedly connected to the surfaces of the sides, away from each other, of the two displacement frames, and the sliding blocks extend into the first sliding groove and are arranged on the outer surface of the limiting rod in a sliding and sleeving mode; by means of the arrangement of an L-shaped connecting rod and an L-shaped supporting plate, when furnace black is filled, a packaging bag can be automatically supported and slightly lifted, incomplete filling of the bottom of the packaging bag is avoided, the automation degree is improved, and the working intensity is reduced.

The present application relates to the field of compressed air energy storage, and particularly relates to a compressed air energy storage underground cavern lining test device with less required filling gas and more stable gas pressure, comprising a support cylinder, which is sleeved with a ring-shaped lining, and a sealed cavity is formed between the side wall of the support cylinder and the elastic sealing layer of the side wall of the ring-shaped lining; and an air inlet is arranged to connect the sealed cavity with the outside. The present application is particularly suitable for use in the compressed air energy storage underground cavern lining test.

This utility model discloses a lightweight outdoor sports thermos cup, including a cup body, a support lid, and a cup lid. The cup body has a double-layer vacuum structure. The support lid is threaded to the inner wall of the top opening of the cup body, and the cup lid is threaded to the outer wall of the top opening of the cup body, covering the outside of the support lid. The support lid has a straw inlet and a pouring spout. The top end of the straw inlet is fixedly connected to an upwardly extending straw. A magnetic cap is fitted over the straw, and a magnetic attraction mechanism is provided between the magnetic cap and the support lid. A support ring is fixedly provided on the top of the support lid, and a fastening mechanism for controlling the opening and closing of the pouring spout is provided between the support ring and the support lid. This utility model belongs to the field of thermos cup technology, specifically a lightweight outdoor sports thermos cup.

The utility model belongs to tool fixture technical field, concretely relates to a device of quick clamping and sealing furnace cover of heat preservation furnace, including counterforce frame, bolt and dog claw, one end of dog claw is fixed on counterforce frame, the other end is provided with claw hook, the screw hole on counterforce frame is screwed with bolt, and the bolt is used for supporting counterforce frame outward with fulcrum of small furnace cover top as support, and the claw hook of dog claw is hooked on the convex point of big furnace cover, clamps small furnace cover and big furnace cover, the utility model provides quick clamping and sealing device of heat preservation furnace cover, and the efficiency and sealing reliability of furnace cover installation are improved obviously through the innovative structure design, the defect that the original inclined wedge type clamping device is effectively overcome cumbersome, time -consuming, easy to loosen and leak, realizes the quick, disposable reliable clamping and sealing of heat preservation furnace cover, obviously improves work efficiency, and ensures the sealing reliability in the operation process of heat preservation furnace.

The utility model relates to the technical field of differential sealing detection devices, in particular to a differential sealing performance rapid detection device, which is characterized in that a detection table comprises a supporting panel, a supporting frame is fixedly mounted on the rear side of the top surface of the supporting panel, a cylinder is fixedly mounted on the front side of a transverse plate body of the supporting frame, and a telescopic shaft of the cylinder is detachably connected with a transparent sealing box; the transparent sealing box moves downwards and can abut against the top face of the supporting panel so that a sealed space can be formed. The suction detection assembly comprises a gas tank, an exhaust pipe is fixedly installed on the top of the gas tank, a valve is fixedly installed on the exhaust pipe, a pressure gauge is fixedly installed on the top of the gas tank, a vacuum pump is arranged on one side of the gas tank, and the gas outlet end of the vacuum pump communicates with the gas tank through a gas pipe. And the suction end of the vacuum pump is communicated with the sealed space through a suction pipe. According to the utility model, through the cooperation of the suction detection assembly and the sealed space, rapid detection operation can be conveniently carried out, and a water immersion mode is not needed.

The utility model relates to the technical field of rotary compensators, and discloses a safety type anti-explosion self-sealing rotary compensator which comprises an anti-explosion pipe, a connecting mechanism is installed outside the anti-explosion pipe, an auxiliary pipe is connected to the inner side of the connecting mechanism in a sliding mode, and a sealing ring is fixedly connected to the outer side of the anti-explosion pipe. The auxiliary pipe is connected to the inner side of the sealing ring in a sliding mode, a sealing assembly is installed outside the auxiliary pipe, and a buckle mechanism is installed outside the sealing assembly. The connecting mechanism comprises a sliding assembly and a fixing assembly, and the sliding assembly comprises a connecting pipe. According to the explosion-proof pipe, the spring and the clamping block are matched with each other, so that the problems that the explosion-proof pipe is used for a long time, pipeline damage cannot be automatically filled, and rapid replacement and maintenance are inconvenient are solved, and the life safety of workers and the service life of equipment are guaranteed; in addition, the arc-shaped sealing plate is fixed through the buckle, so that the sealing performance is improved, the cost is reduced, and the working efficiency is improved.

The utility model discloses a novel moisture -resistant breather balance valve, include: valve body, waterproof air -permeable membrane, dustproof air -permeable cover and moisture -resistant subassembly, through the ingenious design of mechanical type moisture -resistant subassembly, realized the intelligent balance of moisture -resistant and air -permeable function. Under normal pressure state, spring pushes and seals the close -fitting valve body through -hole of sealing washer, effectively blocks the penetration path of outside humid air, when the inside appears negative pressure, external air pressure can overcome the spring pre -tension and opens the channel, imports the dry air of waterproof air -permeable membrane filtration, in time balance pressure, and the structural design of this balance valve fully considers the convenience of production assembly and maintenance. The moisture -resistant subassembly preassembles sealing washer, sealing sheet, spring and bottom plug into an independent module that can be integrally assembled and disassembled, greatly simplifies the final assembly process with valve body, reduces the possibility of parts misloading or missing.

This invention provides a microbial limit tester for food testing, comprising a stable base, a support body, a negative pressure pump, a liquid outlet pipe, a connecting seat, and a specimen container. The support body is fixedly installed on the surface of the stable base, and the negative pressure pump is fixedly installed on the outside of the support body. The liquid outlet pipe is fixedly installed at the output end of the negative pressure pump. The connecting seat is fixedly installed at the top of the support body, and the specimen container is engaged and installed above the connecting seat. The design of the connecting seat and specimen container allows for quick placement and removal of the sampling filter paper, rapid disassembly for open flame sterilization, and multiple filtration of samples, enabling the discharge of bacteria from the sample after multiple filtrations.

The utility model relates to the technical field of silicon material processing discloses multistage linkage type hammering crushing device for silicon material crushing, including hollow protective housing, the top rotation of hollow protective housing is connected with sealing mechanism, sealing mechanism is used for automatic to top seal, the inner wall rotation of hollow protective housing is connected with crushing mechanism, the left side fixed connection of hollow protective housing has drive mechanism, the front side fixed connection of hollow protective housing has dust extraction mechanism, sealing mechanism includes rotation axis no.

This utility model discloses a rapid maintenance device for energy storage liquid cooling pipelines, comprising a first quick-connect male connector, a first control switch, a large bolt flange, a locking device, a second quick-connect male connector, a second control switch, and a quick connector. The first control switch is connected to the first quick-connect male connector; one side of the large bolt flange is connected to the first control switch; the locking device is disposed on the other side of the large bolt flange; the second control switch is connected to the second quick-connect male connector; one side of the quick connector is connected to the other side of the large bolt flange, and the other side is connected to the second control switch. This allows for the separation of pipelines and the disconnection of the liquid cooling pipeline network structure for rapid disassembly and maintenance. This enables rapid maintenance in large-scale energy storage system clusters without loss of coolant, avoiding the shutdown of the liquid cooling system and preventing additional material and labor losses.

This utility model discloses a sperm cryopreservation tube for sealing, relating to the field of cryopreservation technology. The technical solution includes a tube body with symmetrically fixed blocks on its inner side. A cap is movably connected inside the tube body, and an inner sleeve is fixedly connected inside the cap. A pressing assembly is provided inside the inner sleeve, including a pressing pestle and a button. A sealing sheet is movably connected inside the cap, and a movable plate is fixedly connected to the outside of the sealing sheet. A second spring is fixedly connected to the outside of the movable plate, with one end of the second spring away from the movable plate fixedly connected to the inner wall of the cap. A groove is provided on the inner wall of the tube. By using the pressing assembly, the sealing sheet is pressed, causing it to slide on the inner sleeve and engage in the groove to seal the injection port of the tube body, preventing the cap from falling off and causing liquid nitrogen contamination. This simplifies the process of hand-held rotation when sealing the cap and tube body, quickly sealing the injection port of the tube body, preventing excessive air from entering the tube, and ensuring the sperm preservation effect.

The utility model discloses perfusion equipment for stem cell culture, which relates to the technical field of perfusion equipment and comprises a base, a mounting block is arranged on one side of the top surface of the base, a control panel is hinged on one side of the top surface of the mounting block, a culture tank is inserted in the middle of the top surface of the base, and a sealing cover is screwed on the top surface of the culture tank in a threaded manner. A plurality of liquid inlets are formed in the top surface of the sealing cover along the axial side at equal intervals, the liquid inlets are connected with pipelines through connecting assemblies, and culture solution bags are arranged at the tail ends of the pipelines. According to the stem cell culture device, the base is stably matched with the culture tank, so that the culture tank is convenient to mount and fix, the operation stability of the device is improved, and an efficient stem cell culture environment can be realized; through linkage cooperation of the control panel and the speed regulator, the flow rate of the culture solution can be accurately adjusted, and the control precision of the culture process is improved; finally, the problem that pipelines of existing culture equipment are inconvenient to disassemble and assemble is solved, and the stem cell culture effect and efficiency are improved.

The utility model relates to the technical field of ziplock bags, in particular to an anti-static red PE ziplock bag which comprises an extension bag, the lower end of the extension bag is fixedly connected with an anti-static bag body structure, an adhesive tape is arranged on the upper portion of the left side of the right end of the extension bag, and a pressure-sensitive adhesive layer is arranged on the upper portion of the right end of the anti-static bag body structure. And two long arc-shaped rubber groove strips and two long rubber cylindrical clamping strips are respectively arranged at the upper part of the inner left wall and the upper part of the inner right wall of the extension bag. According to the anti-static red PE self-sealing bag, convenient control is achieved through the operation key, convenient opening, closing and sealing are achieved by matching the extension bag with the viscous adhesive tape and the pressure-sensitive adhesive layer, the sealing performance is further enhanced and moisture and dust are isolated through the clamping design of the long arc-shaped rubber groove strip and the long rubber cylindrical clamping strip, and meanwhile the anti-static red PE self-sealing bag is convenient to use. The anti-static bag body structure effectively prevents static accumulation, can be widely applied to the electronic industry, and provides reliable protection and storage for articles.

The utility model relates to the technical field of culture tubes, and discloses a quickly detachable modular triple cell stimulation culture tube which comprises a culture tube, the top of the culture tube is open, and a limiting groove is formed in one side of the top of the culture tube. According to the technical scheme, the inserting block in the pipe cap is inserted into the culture pipe, meanwhile, the inclined opening in the bottom of the inserting block continuously extrudes the wedge-shaped block in the positioning mechanism, and the wedge-shaped block is supported by the spring on the piston rod and continuously extrudes the wedge-shaped block along with the bottom of the inserting block; the wedge-shaped block can be stored in the limiting groove in the direction of the limiting block sliding block, when the wedge-shaped block corresponds to the clamping groove in the middle of the inserting block, the wedge-shaped block can be extruded out by the supporting force of the spring, the wedge-shaped block is limited in the clamping groove, the pipe cap is positioned, it is guaranteed that after an operator inserts the pipe cap to the top of the culture pipe, the culture pipe can be rapidly sealed, and the working efficiency is improved. And the pipe cap is locked through the positioning mechanism, so that the pipe cap is effectively prevented from being opened under the condition of external force.

This utility model relates to the field of building pipe connection technology, and discloses a high-strength connector for building engineering, including a right connecting pipe. A sealing bearing is fixedly connected to the left side surface of the right connecting pipe, and a connecting cylinder is fixedly connected inside the sealing bearing. A sealing rubber ring is fixedly connected to the center of the connecting cylinder. A left connecting pipe is fixedly connected to the left side surface of the connecting cylinder, and a reinforcing pipe is fixedly connected to the left end of the right connecting pipe. Both the right and left connecting pipes are fixedly connected with internal threads. In this utility model, the combination of the sealing bearing, connecting cylinder, sealing rubber ring, and internal threads allows workers to connect two pipes by turning the right and left connecting pipes separately, avoiding the need for users to rotate and install long and heavy pipes, reducing installation difficulty. The reinforcing pipe further enhances the connection strength between the right and left connecting pipes.

The utility model provides a kind of bag type dust removal filter, including ventilation box, filter box and multiple filter bag assemblies, ventilation box bottom is equipped with vent, filter box bottom end is equipped with dust cleaning port, filter bag assembly both ends are open, vent and dust cleaning port are communicated, each filter bag assembly is configured with helical flow guide assembly, including threaded rod, rotating rod and the helical blade of adhering filter bag inner wall, form spiral airflow passage to make dust evenly distributed, threaded rod is connected with the closure plate for plugging vent by screw thread, it is linked with closure assembly by slide bar, drives latter telescopic to seal filter bag assembly.The utility model distributes uniform by spiral channel forced airflow, improves filtering efficiency and filter bag utilization, plugging plate and closure assembly linkage realize single group isolation, support online dust cleaning and replacement, guarantee continuous operation.

The utility model relates to the technical field of sealing test equipment, and discloses a turbine pump end face sealing test device, which comprises a water tank, a main controller fixedly arranged on one side of the water tank, a lifting mechanism fixedly arranged on the water tank, a plurality of test frames fixedly arranged on the front side of the lifting mechanism, and a bottom plate, the bottom of the bottom plate is fixedly mounted on the front side of the lifting mechanism through a plurality of mounting seats, a top plate is arranged on the bottom plate, a plurality of supporting columns are fixedly connected between the bottom plate and the top plate, and an air cylinder is fixedly mounted on the top plate. The two testing frames are arranged on the lifting mechanism, and each testing frame is composed of a bottom plate, a top plate, an air cylinder, a rubber base, a fixing frame, a vertical adjusting frame, a horizontal adjusting block, a sealing plate and the like. Therefore, the sealing test of the end face of one port can be conveniently performed through the sealing plate provided with a plurality of sealing gaskets to simulate flange connection, and the test efficiency can be effectively improved.

This invention relates to the field of filter presses and discloses an easy-to-clean, high-strength stainless steel filter press, comprising a support frame, a front pressure plate, a rear pressure plate, and multiple quick-release filter plate assemblies disposed between the two. Each quick-release filter plate assembly consists of a pair of mating filter plate frames and filter cloth sandwiched therebetween. The filter plate frames integrate a heating component, which can heat and dry the filter cloth after filtration to reduce filter cake adhesion. A rapping mechanism is symmetrically arranged on both sides of the support frame. This mechanism includes a buffer transmission component, a high-frequency rapping component, and a linkage execution component. The buffer transmission component drives the moving seat to shake, achieving low-frequency large-scale loosening. The high-frequency rapping component drives the vibrating rod to perform high-frequency intermittent knocking on the filter plate assembly through an eccentric wheel and rocker mechanism to achieve peeling. The linkage execution component evenly transmits the rapping force to each filter plate unit. This invention achieves filter cake peeling and filter cloth online cleaning through the synergistic effect of thermal drying and composite rapping, reducing the frequency of manual disassembly and washing.

This invention relates to a nuclear-grade air filter in the field of air filter technology. The nuclear-grade air filter includes a reusable frame and a filter element. The reusable frame is made of inorganic non-metallic mineral fiber composite material. The reusable frame includes two side plates, two top plates, and several grid plates. The two side plates are vertically arranged between the two top plates. Side posts are provided at the joints between the side plates and the top plates. The side plates and top plates are fixed together by a mortise and tenon structure formed by the side posts. The filter element is arranged in a corrugated structure within the reusable frame. Several grid plates are arranged on the front and rear end faces of the reusable frame. The corners of the filter element are fixed by the grid plates. The inorganic non-metallic mineral fiber composite material includes one of silicate minerals or basalt and basaltic inorganic non-metallic stone, or a modified composite material thereof. The silicate minerals are composed of at least one of plagioclase, silica, and pyroxene, and the silicate mineral content is at least 20%.

This utility model discloses an antibacterial hose cap, including a main support cap. A sealing sleeve is abutted to the bottom of the main support cap, and an isolation plate is fixedly installed on the inner side of the sealing sleeve. A through groove is formed on the bottom surface of the isolation plate, and a movable top groove is formed on the top of the main support cap. The sealing sleeve is fitted onto the outer side of the hose, and the isolation plate further isolates and seals the outer side of the hose, further enhancing the sealing effect. This allows for the separation of the sealing top block from the hose, making operation simple and convenient. No complicated tools or tedious disassembly steps are required; ordinary users can easily replace the sealing top block, saving time and effort. Pressing the top block and the inner top block automatically resets, and the new sealing top block quickly and tightly engages with the top opening of the hose, achieving rapid sealing and reducing the hose's exposure time during sealing top block replacement, thus reducing the risk of leakage and contamination.

This application discloses a wear-resistant bubble bag, relating to the field of bubble bag technology. The bag body includes a bubble film layer, a fiber layer, and a wear-resistant layer. An anti-static component is disposed on the inner side of the wear-resistant layer. The anti-static component includes guide lines and a dispersion plate, both of which are bonded to the wear-resistant layer with adhesive. The bag body, from the outside in, consists of the wear-resistant layer, the fiber layer, and the bubble film layer. This application utilizes a polyethylene wear-resistant layer with high hardness to resist friction and impact during transportation, and waterproofing to isolate moisture. The polyester fiber layer, with its high strength and toughness, prevents the bag body from being punctured by sharp objects, enhancing stability. The polyurethane bubble film layer, with its high elasticity, tightly adheres to the item, improving packaging fit. Simultaneously, the silver-plated copper fiber guide lines and the "Z"-shaped connecting lines form a mesh structure, rapidly conducting and dispersing static electricity. The copper-zinc alloy dispersion plate further adsorbs and diffuses static electricity, preventing damage to the item from static electricity.

This utility model provides a rapid heat-sealing device for tea packaging bags, including: a conveyor belt, an mounting plate on the conveyor belt, a support frame on the mounting plate, a support plate on the support frame, a heat-sealing head on the support plate, and a metal plate on the mounting plate; it also includes: a cleaning component, which is mounted on the support plate and includes an inclined plate and a spring, with the inclined plate mounted on the support frame. This utility model controls the downward pressure of the heat-sealing head to quickly seal the packaging bag. After sealing the tea packaging bag, by controlling the support plate to move in the opposite direction to the metal plate, the inclined side of the inclined plate presses against the connecting rod, thereby driving the slider to slide within the groove. This allows the cleaning component to clean the surface of the heat-sealing head, preventing tea fragments and melted packaging bag residue from remaining on the surface of the heat-sealing head, ensuring stable rapid heat sealing of the packaging bag.

The utility model relates to the technical field of sampling devices, and discloses a sampling device for cement grinding aid detection, which comprises a sampling tube, a sealing sleeve is rotatably sleeved on the outer surface of the sampling tube, a handle is fixed at one end of the sampling tube extending to the outer side of the sealing sleeve, a sampling groove is arranged in the sampling tube on the inner side of the sealing sleeve, and the sampling groove is communicated with the sealing sleeve. A sampling groove is formed in the handle, a sealing sleeve is arranged in the sampling groove, a sampling window matched with the sampling groove is formed in the sealing sleeve, a supporting block is rotationally arranged at one end, far away from the handle, of the sealing sleeve in a sleeving manner, the supporting block is fixed on the side wall of the sampling pipe, and a fixing screw rod is in threaded sleeving connection with the interior of the supporting block. According to the sampling device for cement grinding aid detection, the sampling groove can be quickly sealed, the operation is simple and convenient, powder flying after sampling is avoided, waste of grinding aids is also avoided, the problem that an existing sampling device for cement grinding aid detection is inconvenient to sample powdery grinding aids is solved, and the practicability of the sampling device is improved.