CN115814666B - Planetary vacuum mixer - Google Patents

Abstract

The application relates to the field of stirring equipment, in particular to a planetary vacuum stirrer, which comprises a machine case, a stirring barrel, a sealing cover plate, a planetary stirring assembly, a first sealing ring and a movable cover assembly, wherein the sealing cover plate is rotatably connected with the machine case through the movable cover assembly; the planetary stirring assembly comprises two carrying cups, two transmission members, an outer rotating shaft, a first driver, an inner rotating shaft, a second driver and a first protection box, wherein the two carrying cups are symmetrically arranged, the two transmission members are used for respectively driving the two carrying cups to rotate, the outer rotating shaft is used for driving the transmission members to operate, the first driver is used for driving the outer rotating shaft to rotate, the inner rotating shaft is used for driving the two carrying cups to revolve together, the second driver is used for driving the inner rotating shaft to rotate, and the first protection box is covered on the periphery of the two transmission members; the drive shaft of the first driver and the drive shaft of the second driver are both facing downwards. The movable cover assembly is movably connected with the machine case, so that the sealing cover plate has a movable space when being sucked downwards by vacuum negative pressure, and the sealing cover plate can be stably and tightly attached to the stirring barrel after long-term use.

Description

Planetary vacuum mixer

Technical Field

The application relates to the field of stirring equipment, in particular to a planetary vacuum stirrer.

Background

The stirring equipment is production equipment for uniformly stirring and mixing materials, is widely applied to the production and preparation of sizing materials such as LED packaging mucilage glue, conductive glue, adhesive and the like, and also has application in the fields of skin care product raw material mixing, cosmetic raw material mixing, printing ink raw material mixing, resin material mixing, silicone rubber raw material mixing and the like.

In the stirring preparation process of products such as sizing materials, skin care products, cosmetics, printing ink, resin materials, silicone rubber and the like, if air exists in a stirring environment, bubbles can be generated in the mixed raw materials, and the performance of the products prepared later is reduced. Therefore, related vacuum stirring equipment is currently available, and a vacuum environment is established for the raw material mixing and stirring process, so that bubbles generated due to stirring acting force in the mixing and stirring process are easy to break in the vacuum environment, and the defoaming effect is achieved.

The current vacuum stirring equipment is generally provided with a cover plate for covering the stirring barrel, the cover plate and the stirring barrel are covered in a hinge structure rotating mode, a sealing ring is arranged at the top edge of the stirring barrel, the sealing performance between the stirring barrel and the cover plate is improved, and a sealed vacuum environment is formed in the stirring barrel through vacuumizing treatment. However, the applicant researches find that when the stirring barrel is vacuumized, the cover plate is concaved inwards in the direction of the inside of the stirring barrel due to the action of vacuum negative pressure in the stirring barrel, so that the cover plate is in a state of being sucked inwards by the vacuum negative pressure, the surface of the cover plate is uneven, the middle part of the cover plate is concaved inwards, the peripheral edge of the cover plate is relatively protruded due to the traction force of the concaved middle part, the hinge structure connected with the cover plate is pulled, and the stirring barrel is subjected to repeated long-term repeated vacuumizing and emptying treatment, so that the hinge structure can be pulled repeatedly to cause deformation of the hinge structure, after long-term use, the cover plate cannot be in a relatively flat state when being covered by the hinge structure, the cover plate is not tightly attached to the sealing ring of the stirring barrel, gaps exist between the cover plate and the sealing ring, external air flows into the stirring barrel, the stirring barrel is difficult to be in a vacuum sealing environment, the cover plate is frequently required to be tightly attached to the sealing ring, but the situation that vacuum gradually leaks can occur in the stirring use process, and the situation of defoaming of vacuum stirring is affected.

Disclosure of Invention

In order to solve the problem that the hinge structure is repeatedly pulled by the vacuum inner suction cover plate for multiple times to deform itself after long-term repeated vacuumizing and evacuating treatment of the conventional vacuum stirring equipment, and the deformed hinge structure can not be flatly attached to the sealing ring during subsequent use, the application provides a planetary vacuum stirring machine.

The application provides a planetary vacuum stirrer, which adopts the following technical scheme:

the planetary vacuum stirrer comprises a machine case, a stirring barrel arranged in the machine case, a sealing cover plate for covering the stirring barrel, a planetary stirring assembly arranged in the stirring barrel, a first sealing ring arranged at the top of the wall of the stirring barrel, and a movable covering assembly arranged in the machine case, wherein the sealing cover plate is rotatably connected with the machine case through the movable covering assembly;

the planetary stirring assembly comprises two carrying cups, two transmission members, an outer rotating shaft, a first driver, an inner rotating shaft, a second driver and a first protection box, wherein the two carrying cups are symmetrically arranged, the two transmission members are used for respectively driving the two carrying cups to rotate, the outer rotating shaft is used for driving the transmission members to operate, the first driver is used for driving the outer rotating shaft to rotate, the inner rotating shaft is used for driving the two carrying cups to revolve together, the second driver is used for driving the inner rotating shaft to rotate, and the first protection box is covered on the peripheries of the two transmission members; the outer rotating shaft is sleeved on the outer wall of the inner rotating shaft, the driving shaft of the first driver faces downwards, and the driving shaft of the second driver faces downwards.

Through the movable cover assembly that sets up, be movable form for the quick-witted case, when sealed apron is down sucked by the vacuum negative pressure, movable cover assembly is for the activity of machine case for sealed apron is difficult for being pulled hard and leads to deformation, guarantees that sealed apron can stably laminate closely with the agitator after long-term use.

In addition, the two carrying cups are driven by different drivers to rotate respectively and revolve together, so that the rotating speeds of the two driving pieces can be respectively regulated, different materials can be stirred by revolution and rotation, the stirring device is suitable for stirring materials with different viscosities, and the application range of the vacuum stirrer is improved; in addition, the driving shaft of the first driver and the driving shaft of the second driver are downward, so that the first driver and the second driver are in a flip-chip connection mode, the first driver and the second driver are close to the middle of the machine case on the premise of the original height of the planetary vacuum mixer, the whole planetary vacuum mixer is compact in structure and low in gravity center, and stirring uniformity is not influenced by the fact that the machine body is easy to shake when the planetary vacuum mixer is used due to the fact that the gravity center is high when the planetary vacuum mixer is used for stirring; and if the first driver and the second driver are in a forward installation mode, namely, the driving shaft is upward, the driving core component is close to the bottom of the machine case, the lengths of the outer shaft and the inner shaft are prolonged, the height of the machine case is relatively high, the planetary stirring assembly is located at a relatively high position of the machine case, the gravity center of the vacuum stirrer is high, the planetary stirring assembly located at the high gravity center easily shakes and the like during stirring, and the stirring uniformity and the use stability of the vacuum stirrer are affected.

And moreover, the transmission member can be coated and protected by adopting the first protection box, so that the condition that stirring materials are thrown out by stirring centrifugal force and fall into the transmission member under the conditions of high-speed revolution and rotation of the carrying cup is reduced, the influence of the stirring materials on the operation of the transmission member is reduced, and the transmission operation stability of the first driver on the transmission member is ensured.

Preferably, the movable cover assembly comprises two groups of movable units which are symmetrically arranged, each group of movable units comprises a mounting block, a movable rod and a limiting block, the mounting blocks are fixedly connected with the case, the movable rods penetrate through the mounting blocks and are in sliding connection with the mounting blocks, the limiting blocks are fixedly connected to the bottoms of the movable rods, and the sealing cover plate is rotationally connected to the tops of the movable rods.

Through setting up two sets of movable units for the movable rod that rotates to be connected with sealed apron is movable form for quick-witted case, when sealed apron is down inhaled by the vacuum negative pressure, the movable rod then upwards slides for the installation piece, the relative slip range of movable rod and installation piece, make the movable rod not by sealed apron hard pulling and lead to the deformation, help the preapring for an unfavorable turn of events, on guaranteeing the sealed vacuum environment basis in the agitator, the movable rod that reduces the deformation leads to sealed apron and the condition of agitator laminating trouble, cost of maintenance is low, the life of extension vacuum mixer.

Optionally, a rotating block is extended on one side of the sealing cover plate, and two ends of the rotating block are respectively connected with the tops of the movable rods of the two movable units in a rotating way.

Through the rotating block that sets up for sealed apron can revolute the axis upset of rotating block steadily, improves the rotation connection stability at sealed apron and movable rod top.

Optionally, each group of movable units further comprises a limiting gasket arranged on the surface of the case, the limiting gasket is provided with a through hole for the movable rod to pass through, and the top of the limiting gasket is abutted with the rotating block.

Through the spacing gasket and the rotating block butt that set up for when opening sealed apron, the rotation of rotating block can make its edges and corners position and spacing gasket butt, plays the excessive pivoted effect of restriction rotating block, and then it is excessive to restrict sealed apron upset, reduces the condition that leads to sealed apron and quick-witted case's corner edge hard collision owing to sealed apron upset is excessive, reduces sealed apron and leads to the fact the condition of damage owing to hard collision.

Optionally, the barrel wall top of agitator has seted up the storage tank, first sealing washer inlays and locates in the storage tank.

Through inlay the first sealing washer and locate the storage tank in, can improve the connection stability at first sealing washer and agitator bucket wall top for the first sealing washer is difficult for breaking away from in the agitator, helps improving the lid of agitator and sealed apron and closes the compactness.

Optionally, the two transmission members are symmetrically arranged about the central axis of the outer rotating shaft, and a first bevel gear is fixedly arranged at the top of the outer rotating shaft; every the transmission component all includes axis of rotation and transmission pivot, the one end of axis of rotation and the bottom fixed connection of carrying the cup, the other end of axis of rotation is fixed to be provided with the second bevel gear, the one end of transmission pivot be provided with the third bevel gear of second bevel gear meshing connection, the other end of transmission pivot be fixed to be provided with the fourth bevel gear of first bevel gear meshing connection.

The two transmission members are symmetrically arranged about the central axis of the outer rotating shaft, so that the two transmission members can be placed in parallel on two opposite sides, the two carrying cups are symmetrically and symmetrically revolved in a balanced manner, and the conditions that the two carrying cups and the two transmission assemblies are easy to incline in the revolution stirring process to cause uneven material stirring or damage the two transmission assemblies are reduced; and through the meshing connection of the first bevel gear and the fourth bevel gear, the rotation of the outer rotating shaft drives the transmission rotating shaft to rotate, and through the meshing connection of the second bevel gear and the third bevel gear, the rotation of the transmission rotating shaft drives the rotation of the rotating shaft, and further the rotation of the outer rotating shaft drives the rotating shaft to rotate, so that the rotation of the outer rotating shaft drives the rotation of the carrying cup.

Optionally, a reinforcing block is arranged between the second bevel gear and the carrying cup.

Because the meshing of second bevel gear and third bevel gear is connected for the axis of rotation shaft is the acute angle and intersects with the axis of horizontal pivot, when planetary stirring subassembly revolves simultaneously with the rotation stirring, under the high-speed rotation condition of thousands of revolutions, can receive the traction that the revolution brought when the axis of rotation of relative slope, and then produce the condition of rocking, and also receive the traction that the revolution brought when the transmission pivot rotates, also take place the condition of rocking easily, make easy damage between second bevel gear, the third bevel gear, need regularly change bevel gear, the maintenance cost is high.

Therefore, the reinforcing block can ensure that the meshing connection position of the rotating shaft and the transmission rotating shaft is relatively stable, reduce shaking caused by traction at the longest force arm of the transmission component due to the rotation centrifugal force during revolution, prolong the service lives of the second bevel gear and the third bevel gear and reduce the maintenance cost.

Optionally, the one end that the transmission pivot is close to outer pivot is provided with the fixed block, the middle part of fixed block is provided with first bearing, the inner circle of first bearing and the outer wall fixed connection of transmission pivot, fixed block and the inner wall fixed connection of first protection box, the top and the inner wall fixed connection of first protection box of interior pivot, transmission pivot, first bevel gear, fourth bevel gear all inlay in first protection box.

Through the fixed block and the first bearing, the transmission rotating shaft can stably rotate in the first protection box, and the transmission rotating shaft is not easy to incline under the action of centrifugal traction force of high-speed revolution; and the first protection box carries out cladding protection to the transmission rotating shaft, the first bevel gear and the fourth bevel gear, reduces the condition that stirred materials thrown out under the conditions of high-speed revolution and rotation of the carrying cup fall into between the first bevel gear and the fourth bevel gear, reduces the stability of the mutual meshing connection of the first bevel gear and the fourth bevel gear influenced by the materials, and improves the transmission operation stability of the outer rotating shaft and the first driver to the transmission component.

Optionally, the planetary stirring assembly further comprises a second protection box, the second bevel gear, the reinforcing block and the third bevel gear are embedded in the second protection box, a second bearing is arranged on one side, close to the transmission rotating shaft, of the second protection box, and an inner ring of the second bearing is fixedly connected with the outer wall of the transmission rotating shaft.

Lubricating oil is added to the meshing connection parts of gears and the like in the conventional stirring device so as to lubricate the gears to ensure that the gears can continuously and stably mesh and connect, and the transmission is stable; however, in the high-speed revolution and rotation process, the lubricating oil between the gears is easily thrown out by the rotating centrifugal traction force, so that dry grinding and hard grinding occur between the gears in the stirring process, and the gears are easily damaged. Therefore, the second protection box is arranged, the second bevel gear, the reinforcing block and the third bevel gear are embedded in the second protection box, the space in the second protection box can be filled with lubricating oil, the gears can be continuously lubricated, the hard grinding condition among the gears is reduced, and the oil throwing condition can not occur in the stirring process.

On the other hand, when the stirring raw materials are loaded in the carrying cup, and in the high-speed revolution and high-speed rotation processes, the centrifugal force of stirring rotation is large, and the rotation shaft connected with the carrying cup and the corresponding second bevel gear are rocked together, so that the second bevel gear is easy to damage. Therefore, the second bevel gear and the third bevel gear are coated and protected through the second protection box, so that the two bevel gears are stabilized, the running stability of the bevel gears is improved, the service life is prolonged, and friction and noise between the bevel gears can be reduced by combining lubricating oil between the bevel gears.

Optionally, the cup comprises a cup holder, a cup body and a cup cover, the cup holder is fixedly connected with the rotating shaft, the cup body is sleeved in the cup holder, the cup cover covers the cup body, a plurality of first clamping blocks are convexly arranged at one end interval of the outer wall of the cup body, which is close to the cup cover, a plurality of second clamping blocks are arranged at the top of the cup holder at intervals, and the second clamping blocks are embedded between the adjacent first clamping blocks.

Through inlay the second fixture block and locate between the adjacent first fixture block, enable cup and saucer joint steadily, improve the cooperation stability of cup and saucer, when the axis of rotation drove the saucer and rotated, drive the cup in the lump and rotate, can realize carrying the rotation of cup steadily.

Optionally, the first sealing ring is prepared from the following raw materials in parts by weight:

the filler is formed by mixing barium sulfate and carbon black in a weight ratio of (2-5): 1;

the cross-linking agent is triallyl isocyanurate; the vulcanizing agent is hexafluorobisphenol A.

Preferably, the tetrapropylacetone rubber can be JSRsias 10 type tetrapropylacetone rubber of Shanghai Fluokang New Material technology Co., ltd; the perfluoro rubber can be selected from SolvAY PFR95HT, and the acrylic rubber can be selected from ZEONACM rubber AR72.

By adopting the technical scheme, the four-propyl fluororubber, the perfluoro rubber and the acrylic rubber are used together, so that the softness improvement and the compression set resistance of the first sealing ring can be improved, the first sealing ring is compressed for a long time at high temperature, the compression set is not obviously reduced, the prepared first sealing ring has excellent vacuum performance, high temperature resistance and ageing resistance, and stability, and the stirring barrel and the sealing cover plate are tightly attached through the first branch pipe during vacuum negative pressure stirring; meanwhile, a certain amount of filler is adopted to fill the gaps in the rubber, so that the air permeability of vulcanized rubber prepared after vulcanization is reduced, and the vacuum tightness is improved; the adopted dimethyl silicone oil ensures that the prepared first sealing ring has excellent corrosion resistance, moisture resistance and dust resistance, when the vacuum stirrer stirs materials containing solvent components, if the materials are thrown out in the stirring process, the first sealing ring is not easy to corrode, the vacuum sealing effect of the first sealing ring can be prevented from being influenced by external moisture or dust adhering to the first sealing ring, and the vacuum sealing effect of the first sealing ring is ensured; the adopted cross-linking agent can promote the rubber compatibility of the tetrapropylacetone rubber, the perfluor rubber and the acrylic rubber, promote the compatibility of the filler, the dimethyl silicone oil and the rubber system, and improve the molding uniformity of the first sealing ring.

Similarly, the material composition of the second sealing ring and the third sealing ring is the same as that of the first sealing ring.

Preferably, the first sealing ring is prepared by the following steps:

step S1: mixing the tetrapropylacetone rubber and the perfluorinated rubber uniformly in parts by weight at 150-200 ℃ to obtain a mixture A;

mixing acrylate rubber, filler and dimethyl silicone oil at 120-150 deg.c to obtain mixture B;

step S2: stirring the mixture A while adding the mixture B, continuing stirring for 10-20min after the mixture B is added, then adding the cross-linking agent, continuing stirring for 20-30min, finally adding the vulcanizing agent, uniformly stirring, adding into a sealing ring die, vulcanizing for 15-25min at 170-180 ℃ and 8-12MPa, and discharging to obtain the first sealing ring.

Through adopting above-mentioned step, the banbury mixer is prepared mixture A, mixture B respectively, mix mixture A again, mix mixture B after, add cross-linking agent, vulcanizing agent in proper order, can improve the material homogeneity of sealing washer, make the sealing washer have uniform stable intensity performance, compression set resistance, use to the vacuum environment in have good sealed effect, and under long-term vacuum negative pressure environment, the sealing washer also is difficult for the deformation, guarantees good vacuum seal effect after long-term practicality.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the two groups of movable units, a movable rod rotationally connected with the sealing cover plate is movably connected with the chassis, and the sliding amplitude of the movable rod relative to the mounting block is set, so that a sliding space is provided for the movable rod when the sealing cover plate is sucked downwards by vacuum negative pressure, the movable rod is not pulled hard by the sealing cover plate to cause deformation, the sealing cover plate can be stably tightly attached to the stirring barrel after long-term use, and the situation that the sealing cover plate is not tightly attached to the stirring barrel due to the deformation of the movable rod is reduced;

2. through the limiting gasket, when the sealing cover plate is turned over, the edge angle position of the rotating block is abutted against the limiting gasket by the rotation of the rotating block, so that the excessive rotation of the rotating block is limited, the excessive turnover of the sealing cover plate is limited, and the condition that the sealing cover plate and the corner edge of the case are hard collided and damaged due to the excessive turnover of the sealing cover plate is reduced;

3. the rotation speed of the two driving parts can be respectively adjusted by adopting different driving parts to drive the two carrying cups to rotate respectively and revolve together, so that different materials can be stirred by revolution and rotation, the stirring device is suitable for stirring materials with different viscosities, and the application range of the vacuum stirrer is improved;

4. the first protection box is adopted to cover and protect the transmission member, so that the condition that stirring materials are thrown out by stirring centrifugal force and fall into the transmission member under the conditions of high-speed revolution and rotation of the carrying cup is reduced, and the influence of the stirring materials on the operation of the transmission member is reduced;

5. through the second protection box, the second bevel gear, the reinforcing block and the third bevel gear can be stably embedded in the second protection box, so that the parts are stably protected, and the situation that the second bevel gear and the third bevel gear are easy to damage is reduced; and can fill lubricating oil in the space in the second protection box, can continuously lubricate the gear, reduce the condition of hard grinding between the gear, also can not appear throwing oil condition in the stirring in-process.

Drawings

FIG. 1 is a schematic view of a planetary vacuum mixer of the present application;

FIG. 2 is a schematic view of a hidden portion of a housing of the planetary vacuum mixer of the present application;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is another schematic view of the hidden part of the housing of the planetary vacuum mixer of the present application;

FIG. 5 is an exploded cross-sectional view of the agitator of the present application;

FIG. 6 is an enlarged view of portion B of FIG. 5;

FIG. 7 is a schematic view of a planetary stirring assembly according to the present application;

FIG. 8 is a schematic view of a planetary stirring assembly of the present application concealing a first protective casing and a second protective casing;

FIG. 9 is an exploded view of the planetary stirring assembly of the present application concealing the first and second protective cases;

fig. 10 is an enlarged view of a portion C in fig. 9;

fig. 11 is an enlarged view of a portion D in fig. 5.

Reference numerals illustrate: 1. a chassis; 2. a stirring barrel; 21. a receiving groove; 22. a first seal ring; 23. a second seal ring; 24. a third seal ring; 3. sealing the cover plate; 31. a rotating block; 41. a movable unit; 411. a mounting block; 412. a movable rod; 413. a sleeve; 414. a limiting block; 415. a baffle; 416. a limiting gasket; 4161. a through hole; 5. a vacuum pumping assembly; 51. a vacuum pump; 52. an air extraction pipeline; 61. a carrying cup; 611. a cup holder; 6111. a second clamping block; 612. a cup body; 6121. a first clamping block; 613; a cup cover; 62. a transmission member; 621. a rotating shaft; 6211. a second bevel gear; 6212. a reinforcing block; 622. a transmission rotating shaft; 6221. a first connecting shaft; 6222. a second connecting shaft; 62221. a locking block; 62222. a locking lever; 62223. a positioning block; 6223. a third bevel gear; 6224. a fourth bevel gear; 631. an outer rotating shaft; 6311. a first bevel gear; 632. a first driver; 6321. a first motor; 6322. a first conveyor belt; 641. an inner rotating shaft; 642. a second driver; 6421. a second motor; 6422. a second conveyor belt; 65. a second protection box; 651. a second bearing; 66. a first protective case; 661. a fixed block; 6611. a first bearing.

Detailed Description

The application is described in further detail below with reference to fig. 1-11.

Example 1

The embodiment of the application discloses a planetary vacuum stirrer. Referring to fig. 1, the planetary vacuum mixer comprises a machine case 1, a mixing drum 2, a sealing cover plate 3, a movable cover assembly, a vacuumizing assembly 5 and a planetary mixing assembly, wherein the mixing drum 2 and the vacuumizing assembly 5 are all arranged in the machine case 1, an opening is formed in the surface of the machine case 1, a drum body of the mixing drum 2 penetrates through the opening, an opening at the top of the mixing drum 2 is limited in the opening, the sealing cover plate 3 covers the mixing drum 2, a rotating block 31 is arranged on one side of the sealing cover plate 3 in an extending mode, and the rotating block 31 is connected with the surface of the machine case 1 through the movable cover assembly in a rotating mode. Preferably, the sealing cover plate 3 of the embodiment is made of double-layer toughened glass, has a flat surface, can be tightly attached to the stirring barrel 2 for sealing, and the two layers of toughened glass are directly bonded through glue, so that the overall strength of the sealing cover plate 3 is improved, and the sealing cover plate is not easy to deform; on the other hand, the toughened glass has good surface corrosion resistance, can reduce the outer surface of the sealing cover plate 3 damaged by substances with corrosiveness outside, and reduces the inner surface of the sealing cover plate 3 damaged by the corrosive raw materials when the inner stirring barrel 2 stirs the corrosive raw materials. The cover plate which is made of PC (polycarbonate) resistant plates or acrylic plates is easy to deform in a vacuum state, has poor sealing effect with the stirring barrel 2, and is easy to generate vacuum negative pressure air leakage. The double-layer toughened glass sealing cover plate 3 of the embodiment has higher strength and corrosion resistance, is integrally smooth, is not easy to deform and has long service life.

Referring to fig. 2 and 3, the movable cover assembly includes two sets of movable units 41 symmetrically disposed, each set of movable units 41 includes a mounting block 411, a sleeve 413, a movable rod 412, a limiting block 414, a baffle 415 and a limiting gasket 416, the mounting block 411 is fixedly connected with an inner wall of the chassis 1, the mounting block 411 is provided with a hole, the sleeve 413 is fixedly sleeved in the hole, the movable rod 412 passes through the sleeve 413 and is slidably connected with the sleeve 413, the limiting block 414 is fixedly connected with the bottom of the movable rod 412, the top of the movable rod 412 passes through the surface of the chassis 1 and is rotatably connected with the sealing cover plate 3, the baffle 415 is mounted on the inner wall of the chassis 1 and is disposed below the limiting block 414, the limiting gasket 416 is disposed on the surface of the chassis 1, the limiting gasket 416 is provided with a through hole 4161, the top of the movable rod 412 passes through the through hole 4161, and the top of the limiting gasket 416 is abutted against the rotating block 31. When the sealing cover plate 3 is turned over, the rotating block 31 rotates, the edge of the rotating block 31 is abutted against the limiting gasket 416, the sealing cover plate 3 is prevented from being overturned excessively, meanwhile, the movable rod 412 rotationally connected with the rotating block 31 slides downwards relative to the mounting block 411, the limiting block 414 is driven to slide downwards, when the movable rod 412 slides downwards to the bottom of the movable rod, the limiting block 414 is abutted against the baffle 415, the baffle 415 plays a role in limiting the movable rod 412 to slide downwards excessively, and the limiting gasket 416 plays a role in preventing the sealing cover plate 3 from being overturned excessively.

Referring to fig. 4 and 5, the top of the wall of the stirring barrel 2 is provided with a containing groove 21, the containing groove 21 is embedded with a first sealing ring 22, preferably, referring to fig. 6, the longitudinal section of the containing groove 21 is trapezoid, the longitudinal section of the first sealing ring 22 is trapezoid, the trapezoid first sealing ring 22 is stably clamped in the trapezoid containing groove 21, the embedding stability of the first sealing ring 22 in the containing groove 21 can be improved, and the first sealing ring 22 is not easy to fall off. In this embodiment, the inner barrel wall of the stirring barrel 2 is convexly provided with the teflon coating, so that the inner barrel wall of the stirring barrel 2 is acid-alkali resistant, wear-resistant, easy to clean and difficult to adhere substances, dirt on the inner barrel wall can be cleaned by clean rags, no residue exists, and no alcohol or acetone is needed for cleaning.

Referring to fig. 7 and 8, the planetary stirring assembly includes two carrier cups 61 symmetrically arranged, two transmission members 62 symmetrically arranged, an outer rotating shaft 631 driving the transmission members 62 to operate, a first driver 632 driving the outer rotating shaft 631 to rotate, an inner rotating shaft 641 driving the two carrier cups 61 to revolve together, a second driver 642 driving the inner rotating shaft 641 to rotate, two second protection boxes 65 symmetrically arranged, and a first protection box 66 arranged between the two second protection boxes 65; referring back to fig. 4, the two carrying cups 61, the two transmission members 62, the two second protection boxes 65 and the first protection box 66 are all disposed in the stirring tank 2, the outer rotating shaft 631 is sleeved on the outer wall of the inner rotating shaft 641, the top of the outer rotating shaft 631 and the top of the inner rotating shaft 641 are both partially protruded into the stirring tank 2, and the middle lower part of the outer rotating shaft 631 and the middle lower part of the inner rotating shaft 641 are disposed below the stirring tank 2.

Referring to fig. 9, the carrying cup 61 includes a cup stand 611, a cup body 612 and a cup cover 613, the cup cover 613 covers the cup body 612, the cup body 612 is sleeved in the cup stand 611, a plurality of first clamping blocks 6121 are convexly arranged at intervals at one end of the outer wall of the cup body 612, which is close to the cup cover 613, and a plurality of second clamping blocks 6111 are arranged at intervals at the top of the cup stand 611 and embedded between the adjacent first clamping blocks 6121.

Referring to fig. 8 and 9, the transmission member 62 includes a rotation shaft 621 and a transmission rotation shaft 622, the transmission rotation shaft 622 includes a first coupling shaft 6221 and a second coupling shaft 6222 that are connected, one end of the rotation shaft 621 is fixedly connected with the bottom of the cup holder 611, the other end of the rotation shaft 621 is fixedly provided with a second bevel gear 6211, and the rotation shaft 621 is provided with a reinforcing block 6212 between the second bevel gear 6211 and the cup 61; one end of the first connecting shaft 6221 is provided with a third bevel gear 6223 in meshed connection with the second bevel gear 6211, the other end of the first connecting shaft 6221 is detachably connected with the second connecting shaft 6222, and one end of the second connecting shaft 6222 far away from the first connecting shaft 6221 is fixedly provided with a fourth bevel gear 6224; the reinforcing block 6212 reinforces the rotating shaft 621, based on the lever principle, stabilizes the second bevel gear 6211, enables the second bevel gear 6211 to be meshed with the third bevel gear 6223 stably, and can stabilize the rotating shaft 621 and the second bevel gear 6211 in the high-speed rotation and high-speed revolution process of thousands of revolutions, so that the second bevel gear 6211 is meshed with the third bevel gear 6223 stably, the phenomenon that centrifugal traction force generated in the rotation process causes shaking to the transmission member 62 is reduced, the service life of the transmission member 62 is prolonged, and the maintenance cost is reduced.

Referring to fig. 7 and 8, the second protection box 65 wraps the second bevel gear 6211, the reinforcing block 6212 and the third bevel gear 6223 in, and a second bearing 651 is disposed on one side of the second protection box 65 close to the transmission shaft 622, the outer wall of the first connecting shaft 6221 is fixedly connected to the inner ring of the second bearing 651, a fixing groove is concavely disposed at one end portion of the first connecting shaft 6221 close to the second connecting shaft 6222, a locking block 62221 is convexly disposed at one end portion of the second connecting shaft 6222 close to the first connecting shaft 6221, and the locking block 62221 is embedded in the fixing groove, so that the second protection box 65 which is formed by integrally accommodating the second bevel gear 6211, the third bevel gear 6223 and the reinforcing block 6212 can be detachably connected with the second connecting shaft 6222, the quick disassembly and the quick assembly of the transmission member 62 can be facilitated, and the quick replacement of parts in the second protection box 65 can be facilitated. Further, referring to fig. 10, the longitudinal sectional shape of the fixing groove is the same as that of the locking bar 62222, and the fixing groove and the locking bar are cooperatively connected, so that the second connecting shaft 6222 is stably locked with the first connecting shaft 6221.

Referring back to fig. 7 and 8, the first driver 632 includes a first motor 6321 and a first conveyor 6322, a driving shaft of the first motor 6321 is connected to the outer rotating shaft 631 through the first conveyor 6322, and the driving shaft of the first motor 6321 is disposed downward, and the driving shaft of the first motor 6321 rotates to drive the outer rotating shaft 631 to rotate in the same direction through the first conveyor 6322. The second driver 642 includes a second motor 6421 and a second conveyor 6422, wherein a driving shaft of the second motor 6421 is connected to the outer rotating shaft 631 via the second conveyor 6422, and a driving shaft of the second motor 6421 is also disposed downward, and an output shaft of the second motor 6421 rotates to drive the inner rotating shaft 641 to rotate in the same direction via the second conveyor 6422.

Further, referring to fig. 11, the outer rotating shaft 631 and the inner rotating shaft 641 both penetrate through the bottom of the stirring barrel 2, a first sealing hole through which the outer rotating shaft 631 penetrates and a second sealing hole through which the inner rotating shaft 641 penetrates are formed in the bottom of the stirring barrel 2, a second sealing ring 23 is extended and arranged at the bottom of the stirring barrel 2 corresponding to the hole wall of the first sealing hole, a third sealing ring 24 is extended and arranged at the hole wall corresponding to the second sealing hole, the second sealing ring 23 is abutted with the outer wall of the outer rotating shaft 631, the third sealing ring 24 is abutted with the outer wall of the inner rotating shaft 641 and the inner wall of the outer rotating shaft 631, and rubber rings are arranged at the joint of the inner rotating shaft 641 and the stirring barrel 2, so that a multi-stage rubber ring sealing structure is formed, a sealed vacuum negative pressure environment can be formed in the stirring barrel 2, vacuum stirring stability is ensured, and the vacuum negative pressure environment is not easy to leak.

Referring to fig. 8 and 9, after the top of the outer rotating shaft 631 passes through the bottom of the stirring tub 2, the top of the outer rotating shaft 631 is fixedly provided with a first bevel gear 6311 engaged with the fourth bevel gear 6224.

Referring to fig. 8 and 9, after passing through the bottom of the stirring barrel 2, the top of the inner rotating shaft 641 is fixedly connected with the inner wall of the first protection box 66, at least two fixing blocks 661 are symmetrically arranged in the first protection box 66 about the central axis of the inner rotating shaft 641, a first bearing 6611 is arranged in the middle of each fixing block 661, the inner ring of the first bearing 6611 is fixedly connected with the outer wall of the second connecting shaft 6222, so that the first protection box 66 stably covers the second connecting shaft 6222, the first bearing 6611, the first bevel gear 6311 and the fourth bevel gear 6224.

Referring back to fig. 4, the evacuation module 5 includes an evacuation pump 51 and an evacuation pipe 52 communicating with the evacuation pump 51, the evacuation pipe 52 communicating with the stirring vessel 2.

The implementation principle of the planetary vacuum stirrer provided by the embodiment of the application is as follows: the sealing cover plate 3 is turned over, the rotating block 31 of the sealing cover plate 3 rotates, the edge of the rotating block 31 is abutted against the limiting gasket 416, the sealing cover plate 3 is prevented from being overturned excessively, and the movable rod 412 slides downwards relative to the mounting block 411 when the sealing cover plate 3 is turned over, so that movable hinge overturning of the sealing cover plate 3 is realized. Raw materials to be stirred are added into the cup 612, then the cup cover 613 covers the cup 612, and the cup 612 is stably embedded into the cup stand 611 through the mutual clamping of the first clamping block 6121 and the second clamping block 6111.

The sealing cover plate 3 is covered on the top of the stirring barrel 2, and then the vacuumizing pump 51 is started to vacuumize the air in the stirring barrel 2, so that a vacuum negative pressure environment is formed. Simultaneously, the first motor 6321 and the second motor 6421 are started, the driving shaft of the first motor 6321 rotates to drive the first driver 632 to rotate and further drive the outer rotating shaft 631 and the first bevel gear 6311 on the top of the outer rotating shaft to rotate, the first bevel gear 6311 is in meshed connection with the fourth bevel gear 6224 to drive the second connecting shaft 6222 to rotate, the second connecting shaft 6222 drives the first connecting shaft 6221 to rotate, the third bevel gear 6223 of the first connecting shaft 6221 is in meshed connection with the second bevel gear 6211 of the rotating shaft 621 to further drive the rotating shaft 621 and the cup stand 611 to rotate, and the two carrying cups 61 rotate respectively. Meanwhile, the driving shaft of the second motor 6421 rotates to drive the second conveyor belt 6422 to rotate, so as to drive the inner rotating shaft 641 and the first protection box 66 fixedly connected with the top of the inner rotating shaft to rotate together, and the rotation of the first protection box 66 drives the fixed block 661 to rotate together, so as to stably drive the two groups of transmission members 62 arranged symmetrically to rotate, so that the common rotation of the two carrying cups 61 is realized, and the different revolution rotation speeds and the rotation speeds of the first motor 6321 and the second motor 6421 are realized, so that the device is suitable for stirring raw materials in different viscosity ranges.

After the vacuum stirring is finished, the stirring barrel 2 is exhausted, then the sealing cover plate 3 is turned over, the movable rod 412 slides downwards relative to the mounting block 411, the movable hinge overturning of the sealing cover plate 3 is realized, and then the carrying cup 61 loaded with the uniformly stirred materials is taken out, so that the vacuum stirring is finished.

Example 2

The first sealing ring, the second sealing ring and the third sealing ring in the above embodiment 1 are all prepared by the following steps:

step S1: mixing 10kg of tetrafluoro rubber and 15kg of perfluoro rubber at 150 ℃ to prepare a mixture A;

meanwhile, 7.5kg of acrylate rubber, 3kg of barium sulfate, 1kg of carbon black and 0.5kg of dimethyl silicone oil are banburying and uniformly mixing at the temperature of 120 ℃ to prepare a mixture B;

step S2: stirring the mixture A and adding the mixture B, continuing stirring for 10min after the mixture B is added, then adding 1kg of cross-linking agent (triallyl isocyanurate) and continuing stirring for 20min, finally adding 0.5kg of vulcanizing agent (hexafluorobisphenol A), uniformly stirring, adding into a sealing ring die, vulcanizing for 15min at 170 ℃ and 12MPa, and discharging to obtain the sealing ring.

Examples 3 to 6

Examples 3-6 differ from example 2 above in that: the types, amounts and preparation conditions of the materials were different from those of example 2, see in Table 1 below:

table 1 Table 2-6 Material types, amounts and preparation conditions

The tetrapropylacetonate rubber can be JSRsrias 10 type tetrapropylacetonate rubber of Shanghai Fluokang new material technology Co., ltd; the perfluoro rubber may be selected from the group consisting of SolvAY PFR95HT and the acrylate rubber may be selected from the group consisting of ZEONACM rubber AR72.

The manufacturer of the materials is the commercial type selected in the embodiment, and other commercial types can implement the sealing ring scheme of the application.

Example 8

This embodiment differs from embodiment 3 described above in that: the preparation method comprises the steps of firstly banburying and stirring tetrapropylfluororubber, perfluorinated rubber, acrylic rubber, barium sulfate, carbon black, dimethyl silicone oil and a cross-linking agent at 150 ℃, then adding a vulcanizing agent, uniformly stirring, adding the mixture into a sealing ring die, vulcanizing for 20min at 175 ℃ and 10MPa, and discharging.

Performance detection

The rubber products prepared in examples 2 to 8 were subjected to tensile strength test, compression set test and aging resistance test, and specific test methods and test results are as follows:

test method

(1) Tensile strength test: referring to GB/T528-2009 determination of tensile stress Strain Property of vulcanized rubber or thermoplastic rubber, materials added with vulcanizing agent in the preparation steps of the above examples 2-8 were injected into a sheet mold to prepare dumbbell-shaped rubber sheets (total length 100mm, thickness 2mm, end width 25mm, narrow portion length 20mm, narrow portion width 5 mm) for testing;

(2) Compression set test: referring to GB/T7759.1-2015 determination of compression set of vulcanized rubber or thermoplastic rubber, the materials added with vulcanizing agent in the preparation steps of the above examples 2-8 are injected into a sample mold to prepare a cylindrical rubber sample (with the diameter of 29mm and the height of 12.5 mm), and the compression set performance at the normal temperature of 23 ℃ is tested;

(3) Aging resistance test: referring to GB/T3512-2014 vulcanized rubber or thermoplastic rubber hot air accelerated aging and heat resistance test, the dumbbell-shaped rubber sheet and the cylindrical rubber sample manufactured in the same batch are placed in a constant temperature and humidity test box with the temperature of 80 ℃ and the humidity of 80% for 48 hours, and the tensile strength of the dumbbell-shaped rubber sheet and the compression set of the cylindrical rubber sample are tested again. (the "same batch" mentioned above means that the same example produced 6 dumbbell-shaped rubber sheets and 6 cylindrical rubber samples, wherein 3 dumbbell-shaped rubber sheets and 3 cylindrical rubber samples were tested for performance before aging test, and 3 dumbbell-shaped rubber sheets and 3 cylindrical rubber samples were tested for performance after aging test.)

(II) test results

TABLE 2 data sheet for Performance test of rubber products prepared in examples 2-8

From the data, the rubber ring prepared by the application has excellent tensile strength and ageing resistance, low compression permanent deformation and good vacuum sealing performance; wherein, example 5 only uses perfluororubber and acrylate rubber as rubber main bodies, example 6 only uses tetrapropylfluororubber and perfluororubber as rubber main bodies, and the tensile strength of the rubber products of examples 2-4 is higher than that of examples 5-6, the compression set is lower than that of examples 5-6, the tensile strength after aging test is lower than that of examples 5-6, and the compression set after aging test is lower than that of examples 5-6; the application adopts the tetrafluoro rubber, the perfluoro rubber and the acrylic rubber as the rubber main body, can improve the tensile strength, the compression set resistance and the aging resistance of the sealing ring, has no obvious reduction of the compression set in the long-time vacuum use process, and has stable vacuum use performance.

In the rubber of the embodiment 7, the equivalent acrylate rubber is adopted to replace the dimethyl silicone oil, materials except the vulcanizing agent are uniformly mixed at one time in the rubber preparation method of the embodiment 8, the tensile strength of the prepared rubber product is lower than that of the embodiment 2-4, the compression permanent deformation is higher than that of the embodiment 2-4, the tensile strength reduction degree after the aging test is higher than that of the embodiment 2-4, and the compression permanent deformation degree after the aging test is higher than that of the embodiment 2-4; the application shows that the dimethyl silicone oil can improve the tensile strength of the rubber product to a certain extent and reduce the compression permanent deformation of the rubber product, and has excellent vacuum sealing effect; in the preparation method, the tetrafluoro rubber and the perfluoro rubber are banburying to form a mixture A, the acrylic rubber, the filler and the dimethyl silicone oil are banburying to form a mixture B, and the cross-linking agent and the vulcanizing agent are sequentially added after the acrylic rubber, the filler and the dimethyl silicone oil are mixed, so that the dispersion uniformity of the materials can be improved, the sealing ring has uniform and stable strength performance and compression set resistance, and the sealing ring is practical in a vacuum environment for a long time and has an excellent sealing effect.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (9)

1. The utility model provides a planetary vacuum mixer, includes quick-witted case (1), interior locating agitator (2) of machine case (1), lid seal apron (3) of agitator (2), interior locating planetary stirring subassembly of agitator (2), set up in first sealing washer (22) at agitator (2) staving top, its characterized in that: the vacuum mixer also comprises a movable cover assembly arranged on the machine case (1), and the sealing cover plate (3) is rotationally connected with the machine case (1) through the movable cover assembly;

the planetary stirring assembly comprises two carrying cups (61) which are symmetrically arranged, two transmission members (62) which respectively drive the two carrying cups (61) to rotate, an outer rotating shaft (631) which drives the transmission members (62) to operate, a first driver (632) which drives the outer rotating shaft (631) to rotate, an inner rotating shaft (641) which drives the two carrying cups (61) to revolve together, a second driver (642) which drives the inner rotating shaft (641) to rotate, and a first protection box (66) which covers the periphery of the two transmission members (62); the outer rotating shaft (631) is sleeved on the outer wall of the inner rotating shaft (641), the driving shaft of the first driver (632) faces downwards, and the driving shaft of the second driver (642) faces downwards;

the movable cover assembly comprises two groups of movable units (41) which are symmetrically arranged, each group of movable units (41) comprises a mounting block (411), a movable rod (412) and a limiting block (414), the mounting blocks (411) are fixedly connected with the chassis (1), the movable rods (412) penetrate through the mounting blocks (411) and are in sliding connection with the mounting blocks (411), the limiting blocks (414) are fixedly connected to the bottoms of the movable rods (412), and the sealing cover plate (3) is rotatably connected to the tops of the movable rods (412).

2. A planetary vacuum mixer according to claim 1, wherein: one side of the sealing cover plate (3) is extended and provided with a rotating block (31), and two ends of the rotating block (31) are respectively connected with the tops of movable rods (412) of the two movable units (41) in a rotating mode.

3. A planetary vacuum mixer according to claim 2, characterized in that: each group of movable units (41) further comprises a limiting gasket (416) arranged on the surface of the chassis (1), the limiting gasket (416) is provided with a through hole (4161) for the movable rod (412) to pass through, and the top of the limiting gasket (416) is abutted against the rotating block (31).

4. A planetary vacuum mixer according to any one of claims 1-3, characterized in that: the top of the barrel wall of the stirring barrel (2) is provided with a containing groove (21), and the first sealing ring (22) is embedded in the containing groove (21).

5. A planetary vacuum mixer according to claim 1, wherein: the two transmission members (62) are symmetrically arranged about the central axis of the outer rotating shaft (631), and a first bevel gear (6311) is fixedly arranged at the top of the outer rotating shaft (631); every transmission component (62) all includes axis of rotation (621) and transmission pivot (622), the one end of axis of rotation (621) is fixed with the bottom fixed connection of carrying cup (61), the other end of axis of rotation (621) is fixed to be provided with second bevel gear (6211), the one end of transmission pivot (622) be provided with third bevel gear (6223) that second bevel gear (6211) meshing is connected, the other end of transmission pivot (622) be fixed to be provided with fourth bevel gear (6224) that first bevel gear (6311) meshing is connected.

6. A planetary vacuum mixer according to claim 5, wherein: a reinforcing block (6212) is arranged between the second bevel gear (6211) and the carrying cup (61) of the rotating shaft (621).

7. A planetary vacuum mixer according to claim 5, wherein: the one end that transmission pivot (622) is close to outer pivot (631) is provided with fixed block (661), the middle part of fixed block (661) is provided with first bearing (661), the inner circle of first bearing (661) is fixedly connected with the outer wall of transmission pivot (622), and inner wall fixed connection of fixed block (661) and first protection box (66), the top of inner rotating shaft (641) and the inner wall fixed connection of first protection box (66), transmission pivot (622), first bevel gear (6311), fourth bevel gear (6224) all inlay in first protection box (66).

8. A planetary vacuum mixer according to claim 6, wherein: the planetary stirring assembly further comprises a second protection box (65), the second bevel gear (6211), the reinforcing block (6212) and the third bevel gear (6223) are embedded in the second protection box (65), a second bearing (651) is arranged on one side, close to the transmission rotating shaft (622), of the second protection box (65), and an inner ring of the second bearing (651) is fixedly connected with the outer wall of the transmission rotating shaft (622).

9. A planetary vacuum mixer according to claim 5, wherein: the cup carrying device comprises a cup holder (611), a cup body (612) and a cup cover (613), wherein the cup holder (611) is fixedly connected with a rotating shaft (621), the cup body (612) is sleeved in the cup holder (611), the cup cover (613) covers the cup body (612), a plurality of first clamping blocks (6121) are convexly arranged at intervals at one end, close to the cup cover (613), of the outer wall of the cup body (612), a plurality of second clamping blocks (6111) are arranged at intervals at the top of the cup holder (611), and the second clamping blocks (6111) are embedded between the adjacent first clamping blocks (6121).