CN210815269U

CN210815269U - Sealed coaxial double-speed stirring reaction kettle

Info

Publication number: CN210815269U
Application number: CN201921801704.3U
Authority: CN
Inventors: 田立勤; 张铭轩; 张莉莉
Original assignee: Zibo Nuofende Chemical Equipment Technology Co ltd
Current assignee: Zibo Nuofende Chemical Equipment Technology Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-23
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to a coaxial double speed of canned type stirring reation kettle, including the cauldron body, cauldron body upper portion is equipped with the feed inlet, and the cauldron bottom is equipped with the discharge gate, and the internal outer axle and interior axle that is in the same place are established to coaxial and cover of being equipped with of cauldron, and interior epaxial end is connected with the high speed motor, and outer epaxial end is connected with the reduction gear, and the retarder connection low speed motor, interior axle lower extreme are connected with the deconcentrator, and outer axle lower extreme is connected with the stirring rake, and cauldron body top is equipped with the two-terminal surface machine that is used for sealing up the clearance between outer axle and the cauldron. The utility model discloses a setting is used for sealing the two-end machine in clearance between outer axle and the cauldron body and is sealed and be used for sealing the double speed machine in clearance between it and the interior axle and seal, seals cauldron body double speed stirring part, and gas in the reaction vessel, liquid can not leak out, and the harmful substance that produces in the reaction process can not produce harm to people and environment yet.

Description

Sealed coaxial double-speed stirring reaction kettle

Technical Field

The utility model belongs to the technical field of chemical industry equipment, concretely relates to coaxial double speed stirring reation kettle of canned type.

Background

Coaxial two-speed stirring is widely applied in the water paint industry, but has the defect that a tank body cannot be sealed. The production process of the water-based paint needs to add various solvents, and the solvents are easy to volatilize into the air when being stirred in an open container. Is harmful to the environment and human body. The leakage easily exists very big potential safety hazard under the open container to the volatilization of solvent causes the waste under the container, is unfavorable for practicing thrift the cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a coaxial double speed of canned type stirring reation kettle, it is open structure to separate present double speed stirring reation kettle, the unable sealed tank body, and during the solvent volatilizees the air easily, cause harm to environment, human body, and cause the problem that the waste is unfavorable for practicing thrift the cost.

The utility model discloses the coaxial double speed of canned type stirring reation kettle, including the cauldron body, cauldron body upper portion is equipped with the feed inlet, feed inlet department is equipped with the manhole cover that can seal, the cauldron bottom is equipped with the discharge gate, the discharging pipe that the discharge gate connecting band has the valve, the internal outer axle and interior axle that establish together are established to coaxial and cover of cauldron, interior epaxial end is connected with high-speed motor, outer epaxial end is connected with the reduction gear, retarder connection low-speed motor, interior axle lower extreme is connected with the deconcentrator, outer axle lower extreme is connected with the stirring rake, cauldron body top is equipped with the two-end face machine that is used for sealing up clearance between outer axle and the cauldron body and seals.

Preferably, the double-end-face mechanical seal comprises a first shaft sleeve sleeved on an outer shaft, a mechanical seal seat fixedly mounted above the kettle body is sleeved outside the lower end of the first shaft sleeve, a pressing plate used for blocking the first shaft sleeve is arranged below the mechanical seal seat, rubber layers are arranged at the top and the bottom of the pressing plate respectively, the mechanical seal seat is better sealed, a mounting groove is formed in the upper end of the mechanical seal seat, an outer static ring is mounted in the outer static ring seat, an O-shaped sealing ring is arranged between the outer static ring seat and the side wall of the mounting groove, an inner static ring is arranged in the outer static ring, the lower end of the inner static ring is sleeved at the upper end of the first shaft sleeve, a first spring is arranged at the bottom of the mounting groove, the upper end of the first spring is contacted with the outer static ring seat and the bottom of the inner static ring, a first movable ring sleeved on the outer shaft is arranged at the top of the outer static ring and the inner static ring, a clamping sleeve used for pressing the first movable ring is, a wedge-shaped sealing ring sleeved on the outer shaft is arranged between the clamping sleeve and the first movable ring, the top of the wedge-shaped sealing ring is tightly attached to the clamping sleeve, and the wedge-shaped sealing ring can prevent gas from being exposed from the top. And through setting up the rotating ring one that can rotate relatively and adjust to compress tightly and outer quiet ring and interior quiet ring, can be better seal, prevent that gas from leaking.

Further preferably, the machine seal seat is provided with an oil filling hole communicated with the top surfaces of the outer static ring and the inner static ring, and the other end of the oil filling hole is connected with the balance tank through an oil pipe. The balance tank is provided with a pressure gauge, so that the contact surfaces of the first dynamic ring, the outer static ring and the inner static ring can be lubricated by oil injection, and the pressure of an oil hole of the first dynamic ring and the outer static ring can be adjusted.

Further preferably, the top of the cauldron body is fixed with the installation base, and the top of installation base is equipped with the installation bearing frame, and outer axle passes the installation bearing frame and rotates the support through a bearing, and the top of bearing one is equipped with the retaining ring, installs bearing frame top and clamp plate bottom contact, and the bottom of clamp plate is equipped with one deck sealing rubber, is equipped with oil blanket one between installation base hole and the outer axle. The middle part of the outer shaft is rotatably supported, so that the rotation is more stable.

Further preferably, a flange is sleeved outside the upper end of the mechanical seal seat, the flange is fixedly connected with the mechanical seal seat through a suspension hook, and the flange is fixedly installed on the installation base through a fastening bolt. The flange is fixed through the suspension hook before fixed mounting at the installation base, can conveniently adjust the position installation.

Preferably, a first rack is fixed to the top of the mounting base, a second rack is fixed to the top of the first rack, a high-speed motor is fixed to the top of the second rack, and an output shaft of the high-speed motor is connected with the inner shaft through a coupling.

Further preferably, the double-speed machine seals including fixing the seal receptacle at outer axle top, be equipped with sealing washer one between seal receptacle bottom and the outer axle top, seal receptacle upper portion is equipped with quiet ring and compresses tightly the gland of quiet ring, the top of quiet ring is equipped with the rotating ring two, the rotating ring top is equipped with the machine and seals the organism, the machine seals the organism bottom and is equipped with circular recess, two upper ends of rotating ring stretch into in the circular recess, be equipped with spring two between circular recess top and the two tops of rotating ring, be equipped with sealing washer two between machine seals the organism and the interior axle, machine seals the organism top and is equipped with the clamping ring of fixing epaxial in, be equipped with clamp bolt on the clamping ring, clamp bolt lower extreme and machine seal. The pressing of the contact surface of the static ring and the second movable ring is adjusted through the pressing bolt, the static ring and the movable ring rotate relatively to seal, and the sealing ring I and the sealing ring II seal to prevent gas leakage.

Further preferably, a water jacket is arranged outside the double-speed mechanical seal, a water inlet pipe and a water outlet pipe are arranged on the water jacket, the water inlet pipe is located below the water outlet pipe, the water outlet pipe is lower than the top of the water jacket, the bottom of the water jacket is fixed on a support plate at the lower end of the second rack, a first gasket is arranged between the support plate and the top of the sealing seat, and a second gasket is arranged at the bottom of the static ring. The first gasket is a rubber gasket, the second gasket is a polytetrafluoroethylene gasket, cooling water leakage can be prevented, the double-speed mechanical seal can be cooled by introducing cooling water, and the service life of the double-speed mechanical seal is guaranteed.

Further preferably, a push ring sleeved on the inner shaft is arranged below the second spring, an annular protrusion is arranged on the inner side of the bottom of the push ring, an annular groove matched with the annular protrusion is arranged on the inner side of the top of the second movable ring, and a third sealing ring is arranged between the inner side of the annular groove, the outer side of the push ring and the second movable ring. The sealing effect is better.

Further preferably, the stirring rake is frame stirring rake, prevents that the material from being stained with the wall, is fixed with the scraper blade on the lateral wall of stirring rake, is fixed with the stock guide that the slope set up on the inside wall of stirring rake, and the stock guide can promote the material and flow to deconcentrator department, and the outside of the cauldron body is equipped with heating coil, can heat the material.

Further preferably, the bottom of the outer shaft is provided with an inner shaft middle support, and the inner shaft middle support comprises: the inner shaft is rotatably supported on the stabilizing bearing sleeve through a bearing II, a bearing gland I is arranged at the bottom of the stabilizing bearing sleeve, and an oil seal II is arranged between an inner hole of the bearing gland I and the inner shaft and can support the lower part of the middle part of the inner shaft, so that the inner shaft rotates more stably.

Preferably, the upper end of the inner shaft is provided with an inner shaft upper support, the inner shaft upper support comprises a second shaft sleeve, a bearing box body and a second bearing gland, the second shaft sleeve is sleeved on the inner shaft, the second bearing gland is connected to the inner shaft through a key, the second bearing gland is fixed to the top of the bearing box body, the upper end of the second shaft sleeve is provided with a round nut for compressing the second shaft sleeve, the second shaft sleeve is rotatably installed on the bearing box body through a third bearing, the bearing box body is fixed to a support, the support is fixed to the second frame, the second shaft sleeve is in threaded connection with a limiting retainer ring for compressing an inner ring of a bearing, a third oil seal is arranged between the. The upper end of the inner shaft can be rotatably supported, and the rotation is more stable.

Further preferably, the bottom in the kettle body is provided with an inner shaft lower support, the inner shaft lower support comprises an inner sleeve and a supporting seat, the inner sleeve and the supporting seat are sleeved on the inner shaft, the supporting seat is fixed on the kettle body through a supporting pipe, the outer sleeve of the inner sleeve is sleeved with a shaft seat sleeve fixed on the supporting seat, the outer sleeve of the shaft seat sleeve is sleeved with an outer sleeve, the shaft seat sleeve, the outer sleeve and the inner sleeve are fixed together through screws, the outer sleeve is pressed and fixed through a shaft sleeve pressing cover, a lower pressing sleeve is rotatably installed outside the outer sleeve and fixed with the stirring paddle, the top of the shaft seat sleeve is provided with the shaft sleeve pressing cover, the inner shaft bottom is fixed with a lower stirrer. The inner shaft lower end is supported, and the lower end of the stirring paddle is also supported, so that the rotation is more stable. The oil seals are stainless steel double-lip oil seals.

Compared with the prior art, the utility model has the advantages of:

through setting up the double-end mechanical seal that is used for sealing the clearance between outer axle and the cauldron body and the double-speed mechanical seal that is used for sealing the clearance between the other interior axle, seal cauldron body double-speed stirring part, gas, liquid in the reaction vessel can not leak out, and harmful substance that produces in the reaction process can not produce harm to people and environment yet. And a plurality of processes can be improved, and the mixing heat transfer and mass transfer of the materials can also achieve high efficiency in a closed environment. No impurities enter the materials in a sealed environment, and a high-quality finished product can be obtained.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of the structure at C in FIG. 1;

FIG. 5 is an enlarged view of the structure of FIG. 1 at D;

FIG. 6 is an enlarged schematic view of the structure at E in FIG. 1;

FIG. 7 is a cross-sectional view of the inner shaft lower support;

in the figure: 1. 2 parts of high-speed motor, 2 parts of inner shaft upper support, 2 parts of bearing gland II, 2 parts of bearing gland 3, limiting retainer ring, 2 parts of bearing III, 2 parts of bearing sleeve II, 2 parts of bearing sleeve III, 2 parts of bearing gland 7, 2 parts of bearing box body, 2 parts of support, 2 parts of round nut, 3 parts of double-speed machine seal, 3 parts of compression bolt, 3 parts of compression ring, 3 parts of machine seal machine body, 3 parts of spring II, 3 parts of compression ring, 3 parts of gland, 3 parts of seal ring I, 3 parts of seal ring II, 3 parts of seal ring I, 3 parts of seal seat, 3 parts of seal ring 8, static ring, 3 parts of dynamic ring II, 3 parts of seal ring III, 3 parts of seal ring 11, push ring, 3 parts of seal ring II, 4, 7-1 parts of clamping sleeve, 7-2 parts of movable ring I, 7-3 parts of wedge-shaped sealing ring, 7-4 parts of outer static ring, 7-5 parts of inner static ring, 7-6 parts of outer static ring seat, 7-7 parts of oil injection hole, 7-8 parts of shaft sleeve I, 7-9 parts of pressure plate, 7-10 parts of mechanical seal seat, 7-11 parts of spring I, 7-12 parts of suspension hook, 7-13 parts of flange, 8 parts of kettle body, 9 parts of inner shaft middle support, 9-1 parts of bearing II, 9-2 parts of bearing gland I, 9-3 parts of oil seal II, 9-4 parts of stable bearing sleeve, 10 parts of stirring paddle, 11 parts of stirring paddle, 12 parts of scraping plate, 13 parts of inner shaft, 14 parts of lower stirrer, 15 parts of discharge port, 16 parts of lower clamping sleeve, 17 parts of disperser, 18 parts of heating coil, 19 parts of upper clamping sleeve, 20 parts of installation base, 21 parts of outer static ring, The bearing device comprises a first frame, a first 22, a balance tank, a second frame, a third frame, a fourth frame, a fifth frame, a sixth frame, a.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

The sealed coaxial double-speed stirring reaction kettle shown in fig. 1 to 7 comprises a kettle body 8, a feed inlet is arranged at the upper part of the kettle body 8, a discharge outlet 15 is arranged at the bottom of the kettle, an outer shaft 6 and an inner shaft 13 which are coaxially sleeved together are arranged in the kettle body 8, the upper end of the inner shaft 13 is connected with a high-speed motor 1, the upper end of the outer shaft 6 is connected with a speed reducer 5, the speed reducer 5 is connected with a low-speed motor 4, the lower end of the inner shaft 13 is connected with a disperser 17, the lower end of the outer shaft 6 is connected with a stirring paddle 10, the top of the kettle body 8 is provided with a double-end-face machine seal 7 for sealing a gap between the outer shaft 6 and.

When using, the material gets into from the feed inlet, then close the sealed lid of feed inlet, close the valve on the discharging pipe, then start high-speed motor and low-speed motor, drive outer axle and interior rotation of axes, thereby drive deconcentrator and stirring rake and carry out the stirring of differential double speed, the stirring effect is better, and seal the clearance between periphery and interior axle and the clearance between the outer axle and the jar body through double-speed machine sealing and double-ended machine sealing, the gas in the reaction vessel, liquid can not leak out yet, harmful substance that produces in the reaction process also can not produce harm to people and environment. And a plurality of processes can be improved, and the mixing heat transfer and mass transfer of the materials can also achieve high efficiency in a closed environment. No impurities enter the materials in a sealed environment, and a high-quality finished product can be obtained.

The double-end-face machine seal 7 comprises a first shaft sleeve 7-8 sleeved on an outer shaft 6, a first machine seal seat 7-10 fixedly arranged above a kettle body 8 is sleeved outside the lower end of the first shaft sleeve 7-8, a pressure plate 7-9 used for blocking the first shaft sleeve 7-8 is arranged below the first machine seal seat 7-10, an installation groove is arranged at the upper end of the first machine seal seat 7-10, an outer static ring seat 7-6 is arranged in the installation groove, an outer static ring 7-4 is arranged in the outer static ring seat 7-6, an inner static ring 7-5 is arranged in the outer static ring 7-4, the lower end of the inner static ring 7-5 is sleeved on the upper end of the first shaft sleeve 7-8, a first spring 7-11 is arranged at the bottom of the installation groove, the upper end of the first spring 7-11 is contacted with the bottoms of the outer static ring seat 7-6 and the inner static ring 7-5, a first movable ring 7-2 sleeved on the outer, a clamping sleeve 7-1 for pressing the movable ring I7-2 is arranged above the movable ring I7-2, and a wedge-shaped sealing ring 7-3 sleeved on the outer shaft 6 is arranged between the clamping sleeve 7-1 and the movable ring I7-2.

An oil filling hole 7-7 which is communicated with the top surfaces of the outer static ring 7-4 and the inner static ring 7-5 is arranged on the machine seal seat 7-10, and the other end of the oil filling hole 7-7 is connected with a balance tank 22 through an oil pipe.

The top of the kettle body 8 is fixed with a mounting base 20, the top of the mounting base 20 is provided with a mounting bearing seat 27, the outer shaft 6 penetrates through the mounting bearing seat 27 and is rotatably supported through a first bearing 28, a retainer ring is arranged above the first bearing 28, the top of the mounting bearing seat 27 is contacted with the bottom of the pressing plate 7-9, and an oil seal 26 is arranged between an inner hole of the mounting base 20 and the outer shaft 6.

The outer part of the upper end of the mechanical seal seat 7-10 is sleeved with a flange 7-13, the flange 7-13 is fixedly connected with the mechanical seal seat 7-10 through a suspension hook 7-12, and the flange 7-13 is fixedly arranged on the mounting base 20 through a fastening bolt.

A first rack 21 is fixed to the top of the mounting base 20, the speed reducer 5 is fixed to the top of the first rack 21, a second rack 25 is fixed to the top of the speed reducer 5, the high-speed motor 1 is fixed to the top of the second rack 25, and an output shaft of the high-speed motor 1 is connected with the inner shaft 13 through a coupling 24.

The double-speed machine seal 3 comprises a seal seat 3-7 fixed on the top of an outer shaft 6, a seal ring I3-6 is arranged between the bottom of the seal seat 3-7 and the top of the outer shaft 6, a stationary ring 3-8 and a gland 3-5 for pressing the stationary ring 3-8 are arranged on the upper part of the seal seat 3-7, a moving ring II 3-9 is arranged on the top of the stationary ring 3-8, a machine seal machine body 3-3 is arranged above the moving ring, a circular groove is arranged on the bottom of the machine seal machine body 3-3, the upper end of the moving ring II 3-9 extends into the circular groove, a spring II 3-4 is arranged between the top of the circular groove and the top of the moving ring II 3-9, a seal ring II 3-12 is arranged between the machine seal machine body 3-3 and the inner shaft 13, a press ring 3-2 fixed on the inner shaft 13 is arranged above the machine, the lower end of the hold-down bolt 3-1 is contacted with the machine seal machine body 3-3.

The outer part of the double-speed machine seal 3 is provided with a water jacket 23, the water jacket 23 is provided with a water inlet pipe and a water outlet pipe, the bottom of the water jacket 23 is fixed on a support plate at the lower end of a second rack 25, a first gasket is arranged between the support plate and the top of the seal seat 3-7, and a second gasket is arranged at the bottom of the stationary ring 3-8.

A push ring 3-11 sleeved on the inner shaft 13 is arranged below the spring II 3-4, an annular bulge is arranged on the inner side of the bottom of the push ring 3-11, an annular groove matched with the annular bulge is arranged on the inner side of the top of the movable ring II 3-9, and a seal ring III 3-10 is arranged in the annular groove, between the outer side of the push ring 3-11 and the movable ring II 3-9.

The stirring paddle 10 is a frame type stirring paddle 10, a scraping plate 12 is fixed on the outer side wall of the stirring paddle 10, a material guide plate 11 which is obliquely arranged is fixed on the inner side wall of the stirring paddle 10, and a heating coil 18 is arranged outside the kettle body 8.

The bottom of the outer shaft 6 is provided with an inner shaft center support 9, and the inner shaft center support 9 comprises: the stable bearing sleeve 9-4 is fixed at the bottom of the outer shaft 6, the inner shaft 13 is rotatably supported on the stable bearing sleeve 9-4 through a bearing II 9-1, a bearing gland I9-2 is arranged at the bottom of the stable bearing sleeve 9-4, and an oil seal II 9-3 is arranged between an inner hole of the bearing gland I9-2 and the inner shaft 13.

The upper end of the inner shaft 13 is provided with an inner shaft upper support 2, the inner shaft upper support 2 comprises a second shaft sleeve 2-5, a bearing box body 2-7 and a second bearing gland 2-2, the second shaft sleeve 2-5 is sleeved on the inner shaft 13, the upper end of the second shaft sleeve 2-5 is provided with a round nut 2-9 for pressing the second shaft sleeve, the second shaft sleeve 2-5 is rotatably arranged on the bearing box body 2-7 through a third bearing 2-4, the bearing box body 2-7 is fixed on a support 2-8, the support 2-8 is fixed on a second rack 25, the second shaft sleeve 2-5 is in threaded connection with a limiting retainer ring 2-3 for pressing an inner bearing ring, an oil seal three 2-6 is arranged between the bearing box body 2-7 and the second shaft sleeve 2-5, and an oil seal four 2-1 is.

The bottom is equipped with interior axle 13 under bracing in the cauldron body 8, interior axle 13 under bracing is including the endotheca 32 and the supporting seat 29 of cover on interior axle 13, supporting seat 29 passes through the stay tube 30 to be fixed on the cauldron body 8, the outside cover of endotheca 32 has the axle seat cover 31 of fixing on supporting seat 29, the outside cover of axle seat cover 31 has overcoat 34, overcoat 34 outside is rotated and is installed down and press from both sides cover 16, it is fixed with stirring rake 10 down to press from both sides cover 16, axle seat cover 31 top is equipped with axle sleeve gland 33, interior axle 13 bottom is fixed with down agitator 14, stirring rake 10 upper end is fixed with upper clamp cover 19, upper clamp cover 19 is.

To sum up, the utility model discloses a setting is used for sealing the two-terminal surface machine in clearance between outer axle and the cauldron body and is sealed with the double speed machine that is used for sealing clearance between all the other interior axles and seals, seals cauldron body double speed stirring part, and gas in the reaction vessel, liquid can not leak out, and the harmful substance that produces in the reaction process also can not produce harm to people and environment. And a plurality of processes can be improved, and the mixing heat transfer and mass transfer of the materials can also achieve high efficiency in a closed environment. No impurities enter the materials in a sealed environment, and a high-quality finished product can be obtained.

In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "up", "down", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Claims

1. The utility model provides a coaxial double speed of canned type stirring reation kettle, includes the cauldron body (8), cauldron body (8) upper portion is equipped with the feed inlet, and the cauldron bottom is equipped with discharge gate (15), is equipped with coaxial and cover in the cauldron body (8) and establishes outer axle (6) and interior axle (13) together, and interior axle (13) upper end is connected with high-speed motor (1), and outer axle (6) upper end is connected with reduction gear (5), and low-speed motor (4), its characterized in that are connected in reduction gear (5): the lower end of the inner shaft (13) is connected with a disperser (17), the lower end of the outer shaft (6) is connected with a stirring paddle (10), the top of the kettle body (8) is provided with a double-end mechanical seal (7) for sealing a gap between the outer shaft (6) and the kettle body (8), and the top of the outer shaft (6) is provided with a double-speed mechanical seal (3) for sealing a gap between the outer shaft and the inner shaft (13).

2. The sealed coaxial two-speed stirred tank reactor of claim 1, wherein: the double-end-face mechanical seal (7) comprises a first shaft sleeve (7-8) sleeved on an outer shaft (6), a mechanical seal seat (7-10) fixedly installed above a kettle body (8) is sleeved outside the lower end of the first shaft sleeve (7-8), a pressing plate (7-9) used for blocking the first shaft sleeve (7-8) is arranged below the mechanical seal seat (7-10), an installation groove is formed in the upper end of the mechanical seal seat (7-10), an outer static ring seat (7-6) is installed in the installation groove, an outer static ring (7-4) is arranged in the outer static ring seat (7-6), an inner static ring (7-5) is arranged in the outer static ring (7-4), the lower end of the inner static ring (7-5) is sleeved on the upper end of the first shaft sleeve (7-8), a first spring (7-11) is arranged at the bottom of the installation groove, the upper end of the first spring (7-11) is in contact with the bottoms of the outer static ring seat (7, the top of the outer stationary ring (7-4) and the top of the inner stationary ring (7-5) are provided with a first movable ring (7-2) sleeved on the outer shaft (6), a clamping sleeve (7-1) used for pressing the first movable ring (7-2) is arranged above the first movable ring (7-2), and a wedge-shaped sealing ring (7-3) sleeved on the outer shaft (6) is arranged between the clamping sleeve (7-1) and the first movable ring (7-2).

3. The sealed coaxial two-speed stirred tank reactor of claim 2, wherein: an oil filling hole (7-7) which is communicated with the top surfaces of the outer static ring (7-4) and the inner static ring (7-5) is arranged on the machine seal seat (7-10), and the other end of the oil filling hole (7-7) is connected with a balance tank (22) through an oil pipe.

4. The sealed coaxial two-speed stirred tank reactor of claim 2, wherein: the top of the kettle body (8) is fixed with a mounting base (20), the top of the mounting base (20) is provided with a mounting bearing seat (27), an outer shaft (6) penetrates through the mounting bearing seat (27) and is rotatably supported through a first bearing (28), a check ring is arranged above the first bearing (28), the top of the mounting bearing seat (27) is in contact with the bottom of a pressing plate (7-9), and a first oil seal (26) is arranged between an inner hole of the mounting base (20) and the outer shaft (6).

5. The sealed coaxial two-speed stirred tank reactor of claim 4, wherein: the outer part of the upper end of the machine seal seat (7-10) is sleeved with a flange (7-13), the flange (7-13) is fixedly connected with the machine seal seat (7-10) through a suspension hook (7-12), and the flange (7-13) is fixedly arranged on the mounting base (20) through a fastening bolt; the top of the mounting base (20) is fixed with a first rack (21), the speed reducer (5) is fixed to the top of the first rack (21), a second rack (25) is fixed to the top of the speed reducer (5), the high-speed motor (1) is fixed to the top of the second rack (25), and an output shaft of the high-speed motor (1) is connected with the inner shaft (13) through a coupler (24).

6. The sealed coaxial two-speed stirred tank reactor of claim 1, wherein: the double-speed mechanical seal (3) comprises a sealing seat (3-7) fixed at the top of an outer shaft (6), a first sealing ring (3-6) is arranged between the bottom of the sealing seat (3-7) and the top of the outer shaft (6), a stationary ring (3-8) and a gland (3-5) for compressing the stationary ring (3-8) are arranged at the upper part of the sealing seat (3-7), a second moving ring (3-9) is arranged at the top of the stationary ring (3-8), a mechanical seal machine body (3-3) is arranged above the moving ring, a circular groove is arranged at the bottom of the mechanical seal machine body (3-3), the upper end of the second moving ring (3-9) extends into the circular groove, a second spring (3-4) is arranged between the top of the circular groove and the top of the second moving ring (3-9), a second sealing ring (3-12) is arranged between the mechanical seal machine body (, a press ring (3-2) fixed on the inner shaft (13) is arranged above the machine seal machine body (3-3), a press bolt (3-1) is arranged on the press ring (3-2), and the lower end of the press bolt (3-1) is in contact with the machine seal machine body (3-3).

7. The sealed coaxial two-speed stirred tank reactor of claim 6, wherein: a water jacket (23) is arranged outside the double-speed mechanical seal (3), a water inlet pipe and a water outlet pipe are arranged on the water jacket (23), the bottom of the water jacket (23) is fixed on a support plate at the lower end of a second rack (25), a first gasket is arranged between the support plate and the top of the seal seat (3-7), and a second gasket is arranged at the bottom of the static ring (3-8); a push ring (3-11) sleeved on the inner shaft (13) is arranged below the spring II (3-4), an annular bulge is arranged on the inner side of the bottom of the push ring (3-11), an annular groove matched with the annular bulge is arranged on the inner side of the top of the movable ring II (3-9), and a sealing ring III (3-10) is arranged in the annular groove, between the outer side of the push ring (3-11) and the movable ring II (3-9).

8. The sealed coaxial two-speed stirred tank reactor of claim 1, wherein: the stirring paddle (10) is a frame type stirring paddle (10), a scraping plate (12) is fixed on the outer side wall of the stirring paddle (10), a material guide plate (11) which is obliquely arranged is fixed on the inner side wall of the stirring paddle (10), and a heating coil (18) is arranged outside the kettle body (8); the bottom of outer axle (6) is equipped with interior axle centre support (9), and interior axle centre support (9) includes: the stabilizing bearing sleeve (9-4) is fixed at the bottom of the outer shaft (6), the inner shaft (13) is rotatably supported on the stabilizing bearing sleeve (9-4) through a bearing II (9-1), a bearing gland I (9-2) is arranged at the bottom of the stabilizing bearing sleeve (9-4), and an oil seal II (9-3) is arranged between an inner hole of the bearing gland I (9-2) and the inner shaft (13).

9. The sealed coaxial two-speed stirred tank reactor of claim 5, wherein: an inner shaft upper support (2) is arranged at the upper end of the inner shaft (13), the inner shaft upper support (2) comprises a second shaft sleeve (2-5), a bearing box body (2-7) and a second bearing gland (2-2) which are sleeved on the inner shaft (13), a round nut (2-9) for compressing the second shaft sleeve (2-5) is arranged at the upper end of the second shaft sleeve (2-5), the second shaft sleeve (2-5) is rotatably arranged on the bearing box body (2-7) through a third bearing (2-4), the bearing box body (2-7) is fixed on a support (2-8), the support (2-8) is fixed on a second rack (25), a limit retainer ring (2-3) for compressing an inner ring of the bearing is connected on the second shaft sleeve (2-5) in a threaded manner, and a third oil seal (2-6) is arranged between the bearing box body (2, and an oil seal IV (2-1) is arranged between the bearing gland II (2-2) and the shaft sleeve II (2-5).

10. The sealed coaxial two-speed stirred tank reactor of claim 9, wherein: the bottom is equipped with interior axle (13) under bracing in the cauldron body (8), interior axle (13) under bracing is including endotheca (32) and supporting seat (29) of cover on interior axle (13), supporting seat (29) are fixed on the cauldron body (8) through stay tube (30), the outside cover of endotheca (32) has axle seat cover (31) of fixing on supporting seat (29), axle seat cover (31) outside cover has overcoat (34), overcoat (34) outside is rotated and is installed down and is pressed from both sides cover (16), it is fixed with stirring rake (10) to press from both sides cover (16) down, axle seat cover (31) top is equipped with axle sleeve gland (33), interior axle (13) bottom is fixed with down agitator (14), stirring rake (10) upper end is fixed with and presss from both sides cover (19), it fixes on the lower extreme of outer axle (6) to press from.