80results about How to "Improve seal quality" patented technology

The utility model discloses a full-automatic solution subpackaging and sealing device, a flame spraying mechanism comprises a flame spraying gun, a gun head mounting rod and a fuel bag, the gun head mounting rod is mounted on a rack, the flame spraying gun is mounted on the gun head mounting rod, and the flame spraying gun is communicated with the fuel bag through a fuel pipeline; the small opening end is located on the side, close to a muzzle of a flame spraying gun of the flame spraying mechanism, of the flame spraying mechanism. A placing hole is formed in the rotating disc, a positioning part is arranged on the placing hole, the positioning part comprises a large opening end and a small opening end, the opening distance of the positioning part is gradually reduced to the opening distance of the small opening end from the large opening end, and the small opening end is located on the side close to a muzzle of a flame spraying gun of the flame spraying mechanism; and the bottle rubbing mechanism is used for extruding the ampoule bottle towards the small end of the opening of the positioning part, applying pre-tightening force to the ampoule bottle and driving the ampoule bottle to rotate at the same time. According to the utility model, when the flame gun is used for sealing the ampoule bottle, the ampoule bottle is uniformly heated, and the sealing quality is improved.

The utility model discloses a sealing device for an electronic cigarette lithium battery, which relates to the technical field of battery processing equipment and comprises a workbench, a clamping mechanism is arranged at the top of the workbench and fixedly connected with a clamp through a connecting mechanism, a third air cylinder is fixedly mounted at the bottom of the workbench, and a second air cylinder is fixedly mounted at the bottom of the workbench. A mounting frame is fixedly mounted at the top of the third air cylinder, and a mounting block is fixedly mounted at the bottom of the mounting frame. According to the sealing device for the lithium battery of the electronic cigarette, by arranging the connecting mechanism, a user can conveniently replace a clamp, by arranging the mounting mechanism, the user can conveniently replace a pressing block, and by replacing the clamp and the pressing block, the sealing device can adapt to batteries of various sizes, so that the universality and adaptability of the device are improved; and force applied by the sealing device can be uniformly distributed, excessive or insufficient pressure is avoided, and therefore the sealing quality and consistency are improved.

The present invention belongs to the technical field of heat exchange equipment, and specifically relates to a tailless packaged heat pipe manufacturing process and a tailless packaged heat pipe manufactured by the same, and the tailless packaged heat pipe manufacturing process comprises the following steps: S1, preparing a mixture, S2, sintering; S3, pore making treatment; S4, making an anti-wetting coating; S5, heat diffusion; S6, welding an isolation net; S7, setting a getter; S8, preparing a head 1; S9, preparing a head 2; S10, making a gas barrier coating; S11, heat treatment; S12, making an anti-leakage layer. The tailless packaged heat pipe comprises a heat pipe, and the heat pipe comprises a heat pipe fitting, and a head 1 and a head 2 are respectively arranged at both ends of the heat pipe fitting, an isolation net is arranged inside the heat pipe fitting, an anti-wetting coating is arranged on the isolation net, a gas barrier coating is arranged on the head 1 and the head 2, and an anti-leakage layer is arranged outside the gas barrier coating. The present invention solves the problem of residual tail pipes existing in the manufacture of heat pipes and prolongs the service life of the heat pipes.

The invention discloses a carton sealing machine. The carton sealing machine comprises an equipment body, a first cover closing mechanism, a lifting mechanism, a second cover closing mechanism and a carton sealing mechanism. The lifting mechanism is arranged on the equipment body and connected and matched with the first cover closing mechanism, the first cover closing mechanism comprises a plurality of first pressing and abutting pieces and a first driving assembly, the first pressing and abutting pieces and the first swing covers are arranged in a one-to-one correspondence mode, and the first driving assembly drives the first pressing and abutting pieces to move close to or away from one another; the lifting mechanism drives the first cover closing mechanism to move close to or away from the box body, and the first pressing piece is used for pressing and folding the first rocking cover; the second cover closing mechanism is arranged on the equipment body, the second cover closing mechanism comprises a plurality of second pressing and abutting parts and a second driving assembly, the second pressing and abutting parts and the second rocking covers are arranged in a one-to-one correspondence mode, the second driving assembly is used for driving the second pressing and abutting parts to rotate close to or away from the box body, and the second pressing and abutting parts are used for pressing and abutting against the second rocking covers. According to the carton sealing machine, dislocation between the second rocking covers can be avoided.

The utility model discloses a bagged laundry detergent sealing machine which comprises a machine frame, a conveying belt is arranged on the front side of the top of the machine frame, a plurality of positioning placing grids are arranged on the conveying belt, an installation support is installed on the rear side of the top of the machine frame, and an installation plate extending forwards is arranged on the top of the installation support. First air cylinders moving up and down are mounted on the left side and the right side of the bottom of the mounting plate correspondingly, second air cylinders moving left and right are mounted at the bottoms of the first air cylinders, third air cylinders moving left and right are mounted at the bottoms of the second air cylinders, clamping plates are mounted on the third air cylinders, and electric heating plates are mounted on the second air cylinders. And the electric heating plate is connected with a ceramic pressing plate. The bagged laundry detergent bag sealing device is simple in structure, convenient to use, good in bagged laundry detergent positioning effect and capable of conducting heat sealing on ports of bagged laundry detergents of different heights, the ceramic pressing plate is heated evenly, the sealing temperature is easy to control, the sealing quality is improved, the operation efficiency of workers is improved, and laundry detergent bags are sealed evenly and tightly.

The application relates to the technical field of vehicle bodies, and provides a back door and a vehicle. The back door provided by the application comprises a back door sheet metal assembly, a back door window frame surrounding a light transmission hole formed by the back door sheet metal assembly, and a sealing piece arranged on the back door window frame. The sealing piece has a first sealing part located on the outer side wall of the back door window frame, the first sealing part is arranged around the back door window frame, and the first sealing part can seal the gap between the back door window frame and the counter handle. The back door provided by the application can seal the gap between the back door window frame and the counter handle, can better improve the sealing quality of the back door in the vehicle, can reduce the noise entering the vehicle from the back door, and can improve the quality of the vehicle.

The utility model provides a lentinus edodes fungus bag bagging device, and relates to the field of lentinus edodes cultivation. The shiitake mushroom bag bagging device comprises a bagging cylinder, the outer surface of the bagging cylinder is sleeved with a coiled packaging sleeve, a frame is arranged on the outer side of the sealing end of the packaging sleeve, a fixed heat sealing table is fixedly installed at the bottom end of the frame, and a sliding movable heat sealing table is arranged at the top end of the frame. According to the shiitake mushroom bag bagging device, the packaging sleeve is connected to the outer surface of the bagging barrel in a sleeving mode, the bagging barrel is connected with the feeding opening, mushroom materials are injected into the packaging sleeve through the feeding opening so that the packaging sleeve can be unfolded and fall off from the surface of the bagging barrel, and feeding is paused after the mushroom materials with the specified amount are injected; the upper heat-sealing table moves downwards to be in contact with the fixed heat-sealing table to complete double-section hot melting, and the needle pierces the middle part of the double-section hot melting so that the packaged fungus bag can be separated from the packaging sleeve, and therefore continuous packaging can be conducted, and the sealing strength and the sealing quality can be improved.

The utility model relates to mechanical and manufacturing technical field mainly relates to a kind of dacron-polyester composite window curtain fabric roll bagging equipment, it includes conveying device, bagging device and sealing device, conveying device horizontal conveying cloth roll, along the conveying direction of cloth roll, bagging device and sealing device are sequentially provided, bagging device includes bagging mechanism, bag opening mechanism and bagging mechanism, bagging mechanism and bag opening mechanism link, bagging mechanism one by one adsorbed packing bag is lifted, this bag opening mechanism receives the packing bag of bagging mechanism lifting and carries out bag opening processing, bagging mechanism and bag opening mechanism side by side, the bagging mechanism is located above the conveying path of conveying device, and the bagging mechanism is packed into the packing bag opened by bag opening mechanism in the cloth roll conveyed by conveying device, sealing device includes horizontal moving mechanism, shaping mechanism and sewing machine, horizontal moving mechanism carries the cloth roll after bagging to the packing bag bag mouth of cloth roll clamped by shaping mechanism after place is sewn by sewing machine, realizes effective sealing and automation.

The present invention relates to the field of valve technology, specifically to a marine stop valve, which mainly comprises a valve body, a connecting pipe connected to the upper flange of the valve body, two baffles fixedly installed on the inner wall of the valve body, baffles fixedly installed on the sides of the two baffles, a valve disc arranged above the baffle, a sealing mechanism arranged above the baffle, and an extrusion mechanism arranged outside the valve disc. When the device is sealed by the valve disc, the sealing groove on the round frame is driven to abut and seal with the sealing ring in the groove body, thereby performing secondary sealing on the device, and the valve disc drives the rubber frame to contact and seal with the sealing frame at the same time, the L-shaped plate pushes the moving ring to move downward, the moving ring drives the moving plate and the T-shaped block to move downward, the T-shaped block moves downward and moves horizontally at the same time, the T-shaped block drives the L-shaped rod to rotate, and the L-shaped rod drives the pressure head to press the rubber frame, so that the contact between the rubber frame and the sealing frame is tighter, the sealing quality between the rubber frame and the sealing frame is improved, the risk of leakage is reduced, and the safety of the operating environment is improved.

The invention relates to the technical field of primary power transformation, and discloses a main transformer equipment rubber ring conversion device which is applied to main transformer equipment, and the main transformer equipment is sealed by a rectangular rubber ring and comprises a connecting plate and a circular rubber ring; wherein the rectangular rubber ring, the connecting plate and the circular rubber ring are connected in sequence, so that the main transformer equipment is sealed by the circular rubber ring instead of the rectangular rubber ring. According to the main transformer equipment rubber ring conversion device provided by the invention, through the connecting plate and the circular rubber ring, under the intermediary effect of the connecting plate, the main transformer equipment can be converted from an original rectangular rubber ring with an uncontrollable compression amount to the circular rubber ring with a controllable compression amount for sealing on the premise of not changing the processing design of a flange connecting surface; and the sealing quality of the rubber ring is improved, the problem of poor sealing is effectively solved, the operation stability of main transformer equipment is improved, the operation and maintenance cost is reduced, and wide application and popularization prospects are achieved.

The invention belongs to the related field of two-section type liquid capsule filling and sealing technologies, and discloses a two-section type liquid capsule filling and sealing system which comprises a liquid filling unit and a sealing unit. The liquid filling unit comprises a filling main machine, a feeding module, a separating module, a smearing module, a liquid injection module, a capsule combining module and a capsule discharging module, wherein the feeding module, the separating module, the smearing module, the liquid injection module, the capsule combining module and the capsule discharging module are arranged on a working table face of the filling main machine. Capsules are sequentially transferred to the filling stations, and the liquid filling process is completed. The sealing unit comprises a sealing main machine, a feeding module, a laser welding module, a sealing discharging module and a discharging module, wherein the feeding module, the laser welding module, the sealing discharging module and the discharging module are arranged on a working table face of the sealing main machine. Capsules are sequentially transferred to the sealing stations, and the sealing process in an annular laser welding mode is completed. The invention further discloses a corresponding method. According to the invention, not only is the capsule sealing quality improved, but also the sequence transfer action of the capsule is reduced in the production transfer process, and finally, the qualified rate of liquid capsule finished products and the system efficiency are greatly improved.

The utility model discloses a vacuum sealing machine with a buckle, which comprises a main machine body and a machine cover rotationally arranged above the main machine body, according to the vacuum sealing machine, the driving piece synchronously drives the clamping pieces and the buckling pieces which are symmetrically arranged to be matched with each other, and the problem that an existing vacuum sealing machine is stressed asynchronously in the clamping and opening process is solved. Specifically, the buckling piece is arranged below the machine cover and forms a buckling groove, the clamping piece is arranged on the main machine body and forms a clamping part, and the clamping part is inserted into the buckling groove to achieve buckling. The clamping piece is controlled to slide laterally through the driving piece, it is ensured that the clamping part and the buckling groove can be separated synchronously, the problem of stress concentration of partial areas is avoided, and therefore the situation that the fastener is damaged due to mechanical fatigue is effectively prevented, and the sealing quality is improved.

The invention discloses a heat sealing device of a bag making machine and a temperature control method of the heat sealing device. An electric heating plate of a transverse sealing device and an electric heating plate of a longitudinal sealing device in the heat sealing device each comprise two main electric heating pipes symmetrically arranged in the length direction. An electric heating plate in the longitudinal sealing device comprises a set of compensation electric heating pipes arranged between two sections of main electric heating pipes and two sets of compensation electric heating pipes arranged on the outer sides of the two sections of main electric heating pipes, and an electric heating plate in the transverse sealing device at least comprises a set of compensation electric heating pipes arranged between the two sections of main electric heating pipes. According to the invention, through the distribution of the main electric heating tube and the compensation electric heating tube on the electric heating plate and the design of a temperature control method of the heat-sealing hot knife, heat accumulation in the middle of the heat-sealing hot knife is effectively reduced, so that the heat-sealing hot knife realizes smaller temperature difference in the heat-sealing process, and the heat-sealing quality is further ensured; and on the other hand, through the design of the water cooling plate temperature control method, accurate control over the flow speed of condensate water is achieved, heat balance of the water cooling plate is achieved, and then the sealing quality is effectively improved.

The utility model discloses a kind of sealing equipment for packaging production of Undaria pinnatifida, belong to packaging sealing field, including mounting bracket, conveying assembly is installed on mounting bracket, mounting bracket one side is fixedly connected with mounting plate, sealing mechanism is provided on mounting bracket, sealing mechanism includes stand, stand is fixedly connected on mounting bracket, cylinder is fixedly connected with the top of stand, cylinder output end is fixedly connected with sealing machine. Advantageous effect lies in: setting guiding mechanism, positioning mechanism and power mechanism, the setting of guide plate can make Undaria pinnatifida packaging bag be right below sealing machine, ensure that Undaria pinnatifida can be sealed and clamped in the sealing position of sealing machine by clamp plate, it is favorable to improve sealing quality, and by the setting of connecting sleeve and connecting frame, when Undaria pinnatifida is clamped by clamp plate, conveying assembly temporarily stops action, avoid the situation that sealing is not strict, further ensure sealing integrity.

The utility model provides a thermal plastic packaging device which comprises a bearing part and a hot welding part, the bearing part is used for bearing a packaging bag to be sealed, the hot welding part and the bearing part are arranged in a relative movement mode, the hot welding part comprises a welding seat and a heating structure arranged in a containing hole of the welding seat, and the two opposite ends of the welding seat are a driving end and a welding end respectively. The heating structure is close to the welding end relative to the driving end; the welding end is pressed against the opening position of the packaging bag located on the bearing part to achieve sealing. In the scheme, due to the fact that the heating structure is arranged inside the welding base instead of the end portion, the problem that the heating temperature of the welding end is too high is avoided, the packaging bag is not prone to being completely welded, and the sealing quality and the yield are improved. And moreover, the heating structure is closer to the welding end relative to the driving end of the welding seat, so that the heating speed of the welding end is high, and compared with the scheme that the heating structure is arranged at the driving end, the heat transfer distance is short, and the heating waiting time is shortened.

The utility model discloses a communication cabinet with shielding electromagnetic wave device, including the cabinet body that is spliced by multiple boards, the both sides of cabinet body are provided with sealed frame, and the both ends of cabinet body width direction are equipped with first sealing plate, and the one end away from the mouth of cabinet body is equipped with multiple second sealing plates, and the inboard of sealed frame, first sealing plate and second sealing plate all are equipped with sealing layer, and the both ends of cabinet body width direction are equipped with the locking mechanism that will sealed frame, first sealing plate and second sealing plate are fixed on the cabinet body. The utility model discloses simple structure, and through sealed frame, first sealing plate, second sealing plate and sealing layer can seal the gap to increase the effect of shielding electromagnetic wave, and sealed frame, first sealing plate and second sealing plate can install and dismount fast, and increase the sealing quality through the mode of replacement.

This utility model relates to the field of airtight door technology and discloses an airtight door suitable for a high-pressure oxygen chamber. It includes an airtight door body with a baffle frame integrally installed on its outer wall, a sealing mechanism located on the outside of the airtight door body, and an adjustment mechanism located on one side of the airtight door body. By pressing the button, a moving plate is driven to compress an elastic element. The moving plate moves a locking pin out of a locking hole, pushing a circular plate, which in turn moves a fixed rod and a piston. The piston pushes the gas inside the fixed shell through a connecting pipe to the sealing airbag. The sealing airbag further seals the airtight door, improving the sealing quality. Loosening the button pushes the elastic element to move the moving plate and locking pin into the locking hole to fix the circular plate. Through the multiple locking holes, the amount of gas entering the sealing airbag can be flexibly adjusted according to the pressure inside the chamber, thus adjusting the sealing performance of the sealing airbag and improving the flexibility and practicality of the device.

The invention relates to a high-expansion-rate alkali-activated cement system hole sealing material as well as a preparation method and application thereof, and belongs to the technical field of preparation of hole sealing materials. According to the alkali-activated-cement system hole sealing material with the high expansion rate disclosed by the invention, fly ash and silica fume in an adopted cementing material are materials rich in aluminosilicate, Si-O and Al-O tetrahedrons of aluminosilicate have a unique three-dimensional network structure, aluminosilicate (A-S-H) gel or crystal nucleuses with different polymerization degrees are generated through reaction in an alkaline environment, and the high expansion rate is achieved; according to the present invention, the early strength of the material can be improved, the cement consumption can be reduced, the carbon emission can be reduced, the purposes of energy saving and environmental protection can be achieved, the fly ash and the silica fume have small particle sizes, and can uniformly fill the material pores so as to improve the hole sealing quality and the gas tightness.

The invention relates to the field of cooked food sealing packaging, in particular to cooked food sealing packaging equipment which comprises a workbench, a material moving disc is rotationally installed at the upper end of the workbench, and a sealing cover laying unit and a heat sealing unit which are located on the left side and the rear side of the material moving disc correspondingly are arranged at the upper end of the workbench. The sealing cover laying unit can guide and limit the adsorbing, transferring and placing process of the sealing cover, it is ensured that the sealing cover can be accurately placed at the correct position on the round packaging box, deviation or dislocation is avoided, and therefore the heat sealing precision is improved, meanwhile, the sealing cover can be prevented from shaking in the moving process, and the service life of the sealing cover is prolonged. The sealing covers are stably placed on the packaging round box, positioning deviation caused by shaking is avoided, it is ensured that the placing positions of all the sealing covers are consistent, and therefore the quality consistency of products is improved.

The present invention relates to the technical field of textile packaging, and in particular to a textile compression packaging method and equipment. First, the placement of the textile package to be compressed is adjusted in an initial state according to the placement inclination of the textile package to be compressed, so as to improve the subsequent sealing quality. Then, based on the grayscale distribution in the moving continuous frame image during the movement of the industrial camera, a secondary fixed position is determined when an empty packaging bag can enter the field of view of the industrial camera. After the industrial camera is fixed at the secondary fixed position, the final length of the empty packaging bag is determined by the change of edge features during the movement of the textile package to be compressed, so that the industrial camera at the final fixed position determined according to the length of the empty packaging bag determines the final placement position of the textile package to be compressed, so that the quality and efficiency of the textile compression packaging are higher.

The present invention relates to the field of sealed packaging of cooked food, specifically to a sealed packaging device for cooked food, comprising a workbench, a material transfer disc is rotatably mounted on the upper end of the workbench, and a capping unit and a heat sealing unit are provided on the upper end of the workbench, which are respectively located on the left and rear sides of the material transfer disc. The capping unit used in the present invention can guide and limit the adsorption, transfer and placement process of the cap, ensuring that the cap can be accurately placed in the correct position on the packaging box to avoid offset or misalignment, thereby improving the accuracy of heat sealing, and at the same time, it can also prevent the cap from shaking during movement, so that the cap can be stably placed on the packaging box, avoiding positioning deviation caused by shaking, ensuring that the placement position of each cap is consistent, thereby improving the quality consistency of the product.

This utility model relates to the field of aluminum foil sealing machines, and discloses a honey jar aluminum foil sealing machine, including a conveyor shell. Support legs are installed at the bottom of the conveyor shell. A conveying mechanism for conveying honey jars is provided inside the conveyor shell. A housing is installed on the top of the conveyor shell, and a lifting plate is slidably installed inside the housing. An electromagnetic induction aluminum foil sealing machine is installed at the bottom of the lifting plate. Clamping mechanisms for fixing honey jars are provided on both sides of the conveyor shell. A U-shaped frame is installed on the top of the lifting plate, and a push rod motor is installed on the top of the housing. The output shaft of the push rod motor is fixedly installed on the U-shaped frame. An mounting plate is provided on the top of the electromagnetic induction aluminum foil sealing machine, and an adjustment mechanism is provided between the mounting plate and the lifting plate. This utility model has the following advantages and effects: through stable conveying, reliable clamping, flexible adjustment of sealing height, and automated control, it effectively improves sealing quality, expands the scope of application, and increases production efficiency.

The utility model provides a kind of full-automatic ointment filling and sealing machine, it is related to pharmaceutical equipment technical field, and it is equipped with feeding conveyor belt in the inside of filling and sealing machine table, lifting cylinder is equipped with in filling and sealing machine table top, filling mechanism includes top plate, connecting ring, ointment storage tank and adjusting assembly, top plate is installed in lifting cylinder output end, connecting ring is rotatably equipped in top plate bottom, ointment storage tank is equipped on top plate, adjusting assembly is equipped on connecting ring, ointment storage tank is connected with adjusting assembly, cover body is equipped above the feeding conveyor belt of filling mechanism side, sealing mechanism is equipped in cover body interior;The utility model adjusting cylinder can drive ointment storage tank to move position in connecting ring, so that the filling pipe of ointment storage tank bottom moves position in synchronization, cooperatively set rotating connecting ring, so that filling pipe can be realized from different position in ointment bottle even filling, avoid ointment in ointment bottle too high accumulation, to avoid the problem of affecting sealing tightness.

The application discloses a kind of cold fresh beef packaging sealing equipment and high-precision sealing operation method thereof, belong to food packaging machinery technical field.The equipment includes rack and conveying component, and the conveying component is provided with guide component on both sides, and is provided with scraping component and drying component in turn along the conveying direction on top, and is provided with sealing component at the discharging end, and the bottom of conveying component is provided with sump corresponding to scraping component, and the side of rack is provided with controller.When operating, first, the sealing edge is pretreated by scraping and drying process, and the grease, meat scraps and condensed water vapor are removed, and then hot-press sealing is carried out.The application can reduce the probability of false sealing and leakage, reduce mold contamination and cleaning frequency, and improve the quality of cold fresh beef packaging and sealing and production continuity.

This invention provides an automatic sealing device for packaging boxes. Multiple sets of limiting components are evenly distributed on the conveyor belt, with any two sets of limiting components forming a placement station for the corresponding packaging box. A limiting rod is located directly above the conveyor belt, and the distance between the lower surface of the limiting rod and the upper surface of the conveyor belt is adapted to the thickness of the packaging box. Two sealing mechanisms are located on both sides of the conveyor belt to fold the overlapping tongues at both ends of the packaging box. The sealing mechanism includes a disc, a pressing plate, and a folding plate arranged sequentially from front to back. Using a simple structure such as the conveyor belt, limiting rod, and sealing mechanism, automatic sealing of the packaging box is achieved through the cooperation of the disc, pressing plate, and folding plate. The equipment has low cost and stable and reliable operation. The limiting components, limiting rod, and positioning plate ensure that the packaging box maintains accurate position and orientation during the sealing process. The arc-shaped guide of the pressing plate and the rotation of the disc enable precise folding of the overlapping tongue, improving the sealing quality.

This utility model discloses a sealing machine with a hot beverage gas release function, belonging to the field of sealing machine technology. Its key technical features include a sealing machine structure with a pusher plate on the inner wall, a cup holder on the top of the pusher plate, a pressing component on the inner wall, and a heating component on the inner wall of the pressing component. The bottom of the heating component has a protrusion. This solves the problem that in existing sealing machines, the heating plate often has a raised outer circle and a concave middle structure. When sealing hot beverages, the cup opening contacts the heating plate, causing steam to accumulate inside the cup and form gas. When the steam cannot escape, it can suddenly burst out from a certain point at the cup opening, leading to sealing failure or beverage leakage, which is inconvenient for users.

This invention belongs to the field of transformer manufacturing technology, specifically a manhole door with a double-layer sealing structure. A manhole door is rotatably mounted on the transformer tank wall, with a corresponding manhole door. A simple maintenance door opening is provided on the manhole door. A pair of first fixing seats are provided on the outer wall of the transformer tank to the left of the manhole door opening, and a pair of second fixing seats are provided on the outer wall of the transformer tank to the right of the manhole door opening. The second fixing seats are horizontally arranged with the first fixing seats. The left end of a pressure rod is rotatably connected to the first fixing seat, and the right end of the pressure rod is detachably fixed to the second fixing seat. A simple maintenance door is detachably installed in the middle of the pressure rod, corresponding to the simple maintenance door opening. A second sealing ring is provided between the transformer tank wall and the manhole door, and a first sealing ring is provided between the manhole door and the simple maintenance door. This invention designs a manhole door connection structure that facilitates opening and closing, and also includes a simple maintenance door, avoiding repeated disassembly and assembly of the manhole door.

The utility model relates to the field of packaging equipment, and discloses a vacuum packaging machine capable of improving sealing quality, which comprises a primary vacuum sealing device, a vacuum cavity is arranged on the primary vacuum sealing device, and the primary vacuum sealing device drives a packaging bag filled with materials to convey and simultaneously performs primary sealing on the packaging bag in the vacuum cavity; the secondary sealing device is connected with one side of the primary vacuum sealing device in a conveying mode, and the secondary sealing device conducts smashing and secondary sealing treatment on the primary sealing position. The packaging machine further comprises a conveying mechanism, the conveying mechanism is arranged at the connecting position of the secondary sealing device and the primary vacuum sealing device, through primary sealing and secondary smashing sealing, the sealing performance and reliability of packaging are improved, and the problem of poor sealing caused by small particles is effectively solved. The problems of waste products and food deterioration caused by poor sealing are obviously reduced, and the shelf life and the market competitiveness of the product are improved.

The utility model discloses an adhesive tape sealing machine which comprises a sealing machine body, one side of the sealing machine body is fixedly connected with an installation plate, the top face of the installation plate is fixedly connected with a compaction assembly, one side of the sealing machine body is fixedly connected with a fixing plate, and the top face of the fixing plate is fixedly connected with a cleaning assembly. One side of the sealing machine body is connected with a conveying table in a lap joint mode, and the top face of the conveying table is connected with a positioning assembly in a lap joint mode. And the compaction assembly comprises a hydraulic rod fixedly connected to the top surface of the mounting plate. Due to the arrangement of the cleaning assembly, when the sealing device is used, the fan is started, air blown out by the fan enters the air guide plate through the ventilation hose, the air flows in the air guide plate and enters the air outlet heads, air blowing cleaning is carried out on articles placed on the sealing device through the air outlet heads, the surfaces of the sealed articles can be cleaned, and the sealing effect is improved. And dust attached to a sealed object is reduced, so that the sticking effect of the adhesive tape is improved, and the sealing quality is improved.

The utility model discloses a food packaging bag sealing device. The food packaging bag sealing device comprises conveying equipment and sealing equipment used in cooperation with the conveying equipment. A plurality of sets of limiting units are evenly arranged on the conveying equipment, the sealing equipment is arranged on the conveying equipment and comprises a motor, an eccentric wheel is arranged at the output end of the motor, and a sealing assembly moving up and down is arranged below the eccentric wheel. A rotating wheel making contact with the eccentric wheel is arranged at the top of the sealing assembly, and a heating piece is arranged at the bottom of the sealing assembly and matched with a limiting unit below to complete sealing. Through cooperation of the sealing device and the conveying device, food packaging bags are placed in the limiting units of the sealing device and sequentially conveyed to the position below the sealing device, the sealing device drives the eccentric wheel to rotate through the motor, and the eccentric wheel drives the sealing assembly to heat and seal the food packaging bags below the sealing assembly in the process of moving up and down. And therefore, continuous sealing processing of the food packaging bags is achieved, and the sealing efficiency is improved.