A stirring device and a reaction kettle

Abstract

The application discloses a stirring device and a reaction kettle, and belongs to the technical field of chemical reaction equipment.The stirring device solves the technical problems of poor stirring effect, uneven airflow dispersion and poor reaction effect in the prior art.The stirring device comprises a driving mechanism and a stirring mechanism.The driving mechanism drives the stirring mechanism to rotate.The stirring mechanism is provided with a stirring shaft and a gas-exchange stirrer connected with the stirring shaft.A gas passage and a control valve assembly connected with the gas passage are arranged on the stirring shaft.The first end of the gas passage is connected with the gas-exchange stirrer, and the second end of the gas passage is connected with an air inlet arranged on the stirring shaft.The gas-exchange stirrer comprises a gas distribution assembly and stirring blades.The gas distribution assembly is communicated with the gas passage.The stirring device is used for the full-contact mixing and stirring of materials in the reaction kettle.Under the action of the gas-exchange stirrer of the stirring device, the reaction materials are fully contacted, the gas dispersion coverage is wide, and the gas is uniformly dispersed, so that the product yield is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of chemical reaction equipment, and more particularly to a stirring device and a reaction kettle. BACKGROUND

[0002] The reaction container is a container commonly used in the chemical field to carry out material reaction, and the reaction effect including reaction speed and conversion efficiency has always been the direction of research and exploration in the chemical field. The gas, liquid and solid three-phase reaction is the most complex and difficult in all reaction systems, which includes gas-liquid reaction system, liquid-liquid reaction system and liquid-solid reaction system, and is a mixed process of multiple reaction systems. In the reaction process with gas participation, the gas entering speed, residence time and contact area with catalyst need to be strengthened, so as to slow down the reaction speed of the gas before contacting with the catalyst, and accelerate the replenishment amount of the gas after consumption. The stirring equipment becomes the key equipment in the reaction process.

[0003] In the prior art, most of the reaction containers adopt self-suction stirring and low pipe insertion gas feeding mode, but there are many shortcomings:

[0004] When the liquid gas is recycled by using the self-suction stirring mode, the gas enters through the small hole on the shaft. In order to reduce the influence on the shaft strength, the hole on the shaft is generally small, and the hole diameter is relatively fixed, which leads to small gas flow and slow speed. Moreover, the self-suction stirrer is usually arranged in the middle of the stirrer, and the gas can only be discharged when the impeller is centrifuged to the maximum outer diameter. There is no gas flow between the outer diameter and the shaft in the early stage, and the gas flow also cannot enter the bottom, which leads to small mixing and contacting range and short contacting time of the gas and the reaction material liquid or solid, and poor reaction effect. While using the low pipe insertion gas feeding mode, the gas outlet is unique, the gas flow direction is single and fixed, the gas flow dispersion is extremely uneven, and the gas flow itself covers a very small area of the liquid or solid, which easily leads to segregation and uniform lag phenomenon in the mixing and contacting of the gas with the liquid and solid, and the reaction is uneven, and the reaction effect is poor. SUMMARY

[0005] The application is aimed at the technical problems of poor stirring effect, uneven gas flow dispersion and poor reaction effect of the stirring device in the prior art, and provides a stirring device and a reaction kettle.

[0006] In order to solve the above technical problems, the application first provides a stirring device, which comprises a driving mechanism and a stirring mechanism. The driving mechanism drives the stirring mechanism to rotate. The stirring mechanism is provided with a stirring shaft and a gas exchange stirrer connected with the stirring shaft. A gas passage and a control valve assembly connected with the gas passage are arranged on the stirring shaft. The first end of the gas passage is connected with the gas exchange stirrer, and the second end of the gas passage is connected with the gas inlet hole arranged on the stirring shaft. The gas exchange stirrer comprises a gas distribution assembly and a stirring blade, and the gas distribution assembly is in communication with the gas passage.

[0007] Preferably, the aeration agitator comprises a distribution aeration agitator and a self-rotation aeration agitator, the distribution aeration agitator comprises a gas distribution mechanism communicated with the gas channel and a first agitating blade arranged above the gas distribution mechanism, and the gas distribution mechanism is provided with gas holes.

[0008] Preferably, the self-rotation aeration agitator is connected to the stirring shaft through a connecting device, the self-rotation aeration agitator performs revolution under the driving action of the stirring shaft and the connecting device, and the self-rotation aeration agitator can perform self-rotation; the self-rotation aeration agitator comprises a second agitating blade, and the second agitating blade is provided with a gas guide mechanism.

[0009] Preferably, the length of the connecting device is adjustable, and the rotating radius of the self-rotation aeration agitator is adjusted by adjusting the length of the connecting device.

[0010] Preferably, the aeration agitator further comprises at least one combined agitator, the combined agitator is arranged in the upper layer of the aeration agitator, the combined agitator and the aeration agitator rotate synchronously and coaxially with the stirring shaft, and the stirring shaft is connected to at least one aeration agitator provided with the gas channel.

[0011] Preferably, the control valve assembly is arranged in the gas phase space in the middle part of the stirring shaft and connected to the stirring shaft, the control valve assembly adopts a pressure self-control type breathing valve structure, and the control valve assembly is provided with a valve rod adjusting part matched with the gas pressure action.

[0012] Preferably, the aeration agitator further comprises a heat exchange assembly, the heat exchange assembly is arranged on the outer periphery of the stirring shaft, and the heat exchange assembly is arranged at the upper end of the aeration agitator, and the heat exchange assembly is provided with an inlet pipe and an outlet pipe.

[0013] Preferably, the upper end of the heat exchange assembly adopts a sealing structure of a double-line sealing ring, and the lower end of the heat exchange assembly is provided with a packing sealing structure at the connecting position with the stirring shaft.

[0014] Preferably, the aeration agitator further comprises a rotary joint assembly, the rotary joint assembly is arranged at the upper end of the stirring shaft, the rotary joint assembly is provided with an inlet and an outlet, and the rotary joint assembly is provided with a movable connecting rotary joint.

[0015] The application further provides a reaction kettle comprising a kettle body and a stirring device, one end of the stirring device extends into the kettle body and extends to the lower part of the kettle body, and the connecting position of the stirring device and the kettle body is sealed by a sealing mechanism.

[0016] Compared with the prior art, the application has the following beneficial effects:

[0017] In this invention, the stirring shaft rotates under the drive of the drive mechanism, simultaneously engaging a gas-exchange agitator. Gas enters the agitator through a gas channel and is then discharged through the agitator, ensuring thorough contact and mixing with other reactants. This results in a wide and uniform gas distribution throughout the equipment, accelerating the reaction rate and increasing product yield. Furthermore, any gas trapped in the gas phase space is recycled back into the reaction liquid via the control valve assembly and the stirring shaft, achieving the recycling of the gases required for the reaction. This invention can be widely applied in chemical industries involving gas-based reactions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the stirring shaft of the present invention;

[0021] Figure 3 For the present invention Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0022] Figure 4 A schematic diagram of the main structure of the air exchange agitator of the present invention;

[0023] Figure 5 For the present invention Figure 4 A top-view structural diagram;

[0024] Figure 6 This is a schematic diagram of the main structure of the self-converting gas stirrer of the present invention;

[0025] Figure 7 For the present invention Figure 6 A top-view structural diagram;

[0026] Figure 8 This is a schematic diagram of the rotary joint assembly of the present invention;

[0027] Figure 9 This is a schematic diagram of the structure of the breathing valve of the present invention;

[0028] Figure 10 This is a schematic diagram of the heat exchange component of the present invention.

[0029] Explanation of symbols in the diagram:

[0030] 1, stirring shaft; 101, guide key structure; 102, threaded flange; 103, threaded joint; 104, guide hook key structure; 2, rotary joint assembly; 21, tee; 22, inlet; 23, outlet; 24, elbow; 25, conversion joint; 26, flange connection disc; 27, gasket; 3, distribution aeration stirrer; 31, first stirring blade; 32, paddle sleeve; 33, hook flat key; 34, set screw; 35, lock nut; 36, distribution pipe; 37, ring pipe; 4, self-conversion aeration stirrer; 41, second stirring blade; 42, gas guide paddle sleeve; 43, connecting bearing; 44, ratchet blade; 45, curved gas guide piece; 5, aeration connecting rod; 6, shaft sleeve; 7, first combined stirrer; 8, second combined stirrer; 9, kettle body; 10, rack; 11, sealing mechanism; 12, motor; 13, speed reducer; 14, transmission mechanism; 15, breather valve; 151, valve seat; 152, screw cap; 153, valve rod adjuster; 154, gasket; 16, heat exchange assembly; 161, inlet pipe; 162, outlet pipe; 163, water jacket body; 164, sealing plate; 165, connecting plate; 166, explosion-proof armored platinum resistance; 167, temperature measuring element; 168, O-ring; 169, packing seal structure; 1691, gland; 1692, packing chamber; 1693, packing; 1694, fastener; 1695, second set screw. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0032] Please refer to Figure 1 , the present application provides a stirring device, comprising a driving mechanism, a stirring mechanism, the driving mechanism drives the stirring mechanism to rotate, the stirring mechanism is provided with a stirring shaft 1 and a gas exchange stirrer connected with the stirring shaft 1, a gas passage and a control valve assembly connected with the gas passage are arranged on the stirring shaft 1, the first end of the gas passage is connected with the gas exchange stirrer, and the second end of the gas passage is connected with the gas inlet hole arranged on the stirring shaft 1; the gas exchange stirrer comprises a gas distribution assembly and a stirring blade, and the gas distribution assembly is communicated with the gas passage. The present application is under the action of the gas exchange stirrer of the stirring device, the reactant material is fully contacted, the gas dispersion covers a wide range and is uniformly dispersed, the reaction rate is accelerated, and the product yield is improved; and the stagnant gas in the gas phase space is recycled and utilized by the control valve assembly and the stirring shaft into the reaction liquid inside, so that the required gas for reaction is recycled and utilized.

[0033] Specifically, as Figure 1 , Figure 2As shown, the stirring shaft 1 is vertically arranged, the lower end extends into the reactor for stirring driving effect, the stirring shaft 1 adopts a hollow tube shaft structure, a gas passage is arranged in the axial interior thereof, and the gas enters the bottom of the stirring shaft 1 and the reactor through the gas passage in the interior of the stirring shaft 1. The stirring shaft 1 is provided with a guide key groove structure 101, which facilitates the sliding fit connection of the equipment thereon, thereby facilitating the position adjustment of the equipment. The upper end of the stirring shaft 1 is connected with a rotary joint assembly 2 through a threaded flange 102 and a threaded joint 103, the rotary joint assembly 2 is provided with a gas inlet, and the gas is introduced into the gas passage of the stirring shaft 1 through the gas inlet.

[0034] Further, the stirring shaft 1 is provided with a guide hook head key structure 104, the hook head key structure prevents the stirrer from sinking, loosening and sliding, and since the threaded flange 102 above the stirring shaft 1 is connected with the rotary joint assembly 2, the effective connection of the gas inlet is realized, the gas is introduced and discharged while the stirring shaft 1 is running, and the overall assembly and disassembly are facilitated.

[0035] In the embodiment, the gas stirring device includes a distribution gas stirring device 3 and a self-rotation gas stirring device 4, the distribution gas stirring device 3 includes a gas distribution mechanism communicated with the gas passage and a first stirring blade 31 arranged above the gas distribution mechanism, and the gas distribution mechanism is provided with a gas hole.

[0036] Specifically, as shown in Figure 3 , Figure 4 The distribution gas stirring device 3 is provided with a paddle sleeve 32, the gas distribution mechanism and the first stirring blade 31 are connected to the paddle sleeve 32, the paddle sleeve 32 is vertically arranged and sleeved on the stirring shaft 1, and the paddle sleeve 32 is coaxially arranged with the stirring shaft 1; the paddle sleeve 32 is a sleeve structure with a hollow middle part, the inner side of the paddle sleeve 32 is provided with a hook head flat key 33, the paddle sleeve 32 is connected with the guide key groove structure 101 arranged on the outer periphery of the stirring shaft 1 through the hook head flat key 33, the guide positioning and sliding fit connection are realized, and the paddle sleeve 32 and the stirring shaft 1 are fastened through a set screw 34 and a lock nut 35, so as to ensure the connection stability of the stirrer.

[0037] As shown in Figure 5 The gas distribution mechanism includes a distribution pipe 36 and a ring pipe 37, the ring pipe 37 is a tubular structure with a circular ring shape connected at the head and tail, the ring pipe 37 is arranged with the paddle sleeve 32 as the center, the distribution pipe 36 communicates the paddle sleeve 32 with the ring pipe 37, the distribution pipe 36 is a hollow circular pipe structure, one end of the distribution pipe 36 is connected with the paddle sleeve 32 and is communicated with the gas passage of the stirring shaft 1, the other end of the distribution pipe 36 extends along the radial direction of the ring pipe 37 and is communicated with the ring pipe 37, so that the gas in the stirring shaft 1 enters the ring pipe 37 through the distribution pipe 36.

[0038] The ring pipe 37 is provided with a plurality of gas discharge holes, and the gas in the stirring shaft 1 enters the reaction solution in the reaction kettle through the gas discharge holes.

[0039] Further, three distribution pipes 36 are arranged between the paddle sleeve 32 and the ring pipe 37, and every two adjacent distribution pipes 36 are angularly spaced 120°, so as to be uniformly arranged, thereby ensuring that the gas in the ring pipe 37 is uniformly and dispersedly distributed.

[0040] Further, as a preferred embodiment of the present application, the distribution pipe 36 and the ring pipe 37 can also adopt a square pipe or other tubular structure, and the number of the distribution pipe 36 can be adjusted according to actual reaction needs, and the number of the distribution pipe 36 can be adaptively increased or reduced.

[0041] In the embodiment, the gas distribution mechanism is connected to the lower part of the paddle sleeve 32, the first stirring blade 31 is connected to the upper part of the paddle sleeve 32, the first stirring blade 31 is coaxially arranged with the ring pipe 37 of the gas distribution mechanism, and both rotate around the center of the paddle sleeve 32. The gas distribution mechanism and the first stirring blade 31 cooperate to realize gas inletting while stirring, and the stirring blade can disperse the gas, thereby further increasing the gas-liquid contact area and the reaction effect.

[0042] Further, the first stirring blade 31 is uniformly provided with three propeller blade structures, and the specific structure and number of the propeller blade can be adaptively adjusted according to reaction needs.

[0043] When the gas enters the paddle sleeve 32 through the gas channel of the stirring shaft 1, and then enters the ring pipe 37 through the distribution pipe 36, the ring pipe 37 rotates under the driving of the stirring shaft 1. In the rotating process, the liquid in the ring pipe 37 is discharged under the action of centrifugal force to form a vacuum, and the gas is discharged from the gas discharge holes on the ring pipe 37, so that the gas is dynamically and uniformly distributed in the material. Under the stirring action of the first stirring blade 31 above, the gas is instantaneously dispersed and distributed into the reaction liquid in the reaction kettle by the paddle of the distribution gas stirrer 3, the reaction gas is uniformly and fully contacted with the liquid and the fixed catalyst, the gas-liquid mixture is uniformly mixed and reacts, and the reaction is more complete, the efficiency is higher, and the product quality is good under the action of gas inletting and stirring.

[0044] In the embodiment, the self-conversion gas stirrer 4 is connected to the stirring shaft 1 through the connecting device, and rotates around under the driving action of the stirring shaft 1 and the connecting device, and can also rotate by itself; the self-conversion gas stirrer 4 comprises a second stirring blade 41, and the second stirring blade 41 is provided with a gas guide mechanism.

[0045] Specifically, as shown in Figure 3As shown, the self-conversion gas agitator 4 is connected with the stirring shaft 1 through the gas exchange connecting rod 5, the gas exchange connecting rod 5 is sleeved on the stirring shaft 1 through the shaft sleeve 6, the shaft sleeve 6 is arranged above the paddle sleeve 32, and the horizontal height of the second stirring blade 41 is higher than that of the first stirring blade 31.

[0046] The gas exchange connecting rod 5 is an L-shaped circular rod structure, and a gas passage is arranged in the gas exchange connecting rod 5, one end of the gas exchange connecting rod 5 is fixedly connected with the shaft sleeve 6, and the gas passage in the stirring shaft 1 is communicated with the gas exchange connecting rod 5, and the lower end of the gas exchange connecting rod 5 is connected with the self-conversion gas agitator 4, so that the gas exchange connecting rod 5, the self-conversion gas agitator 4 and the stirring shaft 1 are coaxially synchronous revolution under the driving action of the stirring shaft 1.

[0047] As shown in Figure 6 , Figure 7 The self-conversion gas agitator 4 is provided with a gas guide paddle sleeve 42, the self-conversion gas agitator 4 is movably connected with the gas exchange connecting rod 5 through the gas guide paddle sleeve 42 and the connecting bearing 43, the second stirring blade 41 is driven to rotate by the fluid resistance on the gas exchange connecting rod 5, the gas enters the self-conversion gas agitator 4 through the stirring shaft 1 and the gas exchange connecting rod 5, and is discharged under the revolution centrifugal force, and under the rotation action, the gas is dispersed in the whole container rotation diameter range, so that the gas dynamically and uniformly fills the container and contacts the reaction materials to fully react.

[0048] In the embodiment, when the stirring shaft 1 rotates, the gas exchange connecting rod 5 and the self-conversion gas agitator 4 are driven to rotate, in the rotation process, the liquid in the gas exchange connecting rod 5 and the self-conversion gas agitator 4 is discharged to form a vacuum under the centrifugal force, the gas enters the self-conversion gas agitator 4 from the stirring shaft 1 through the gas exchange connecting rod 5, and the self-conversion gas agitator 4 rotates on the gas exchange connecting rod 5, the gas is discharged under the revolution and rotation, dynamically fills the whole container without dead angle, and the gas is uniformly dispersed in each direction of the liquid.

[0049] Further, the second stirring blade 41 adopts a ratchet blade 44, and a curved gas guide piece 45 is connected to the ratchet blade 44, which can reduce the resistance and is suitable for different viscosity occasions and process reaction needs, has a wide application range, makes the reaction efficiency higher, saves energy, and further guarantees the stability of the product quality.

[0050] Further, as a preferred embodiment of the present application, three gas exchange connecting rods 5 are evenly connected to the shaft sleeve 6, the three gas exchange connecting rods 5 are connected to the shaft sleeve 6 at equal angles, and one self-conversion gas agitator 4 is connected to the end of each gas exchange connecting rod 5, so that the gas dynamically and uniformly fills the whole container under the action of the three gas exchange connecting rods 5 and the three self-conversion gas agitators 4, fully contacts the reaction materials, the gas utilization rate is higher, and the gas-liquid reaction is more complete.

[0051] Further, as a preferred embodiment of the present application, the length of the aeration connecting rod 5 can be adjusted to meet the aeration requirements of different rotation radii, or the aeration connecting rod 5 is of an adjustable length structure, and the aeration connecting rod 5 can be of a telescopic or other adjustable length arrangement, and the rotation radius of the self-rotation aeration stirrer 4 is adjusted by adjusting the length of the aeration connecting rod 5 to meet the aeration requirements of different rotation radius ranges. At the same time, the self-rotation aeration stirrer 4 and the distribution aeration stirrer 3 cooperate to disperse the output gas more uniformly, and the gas, liquid and solid are in contact more fully and comprehensively in the reaction kettle, the contact time of the materials is prolonged, the reaction is promoted, and the product quality and yield are improved, achieving better self-suction and stirring effects; at the same time, the rotation speed can be reduced, the power can be reduced, and the energy-saving and consumption-reducing effects can be achieved.

[0052] As shown in Figure 1 In the embodiment, at least one combined stirrer is further arranged on the stirring shaft 1, the combined stirrer is connected to the stirring shaft 1 through a guide sleeve, the combined stirrer is fixedly connected to the guide sleeve, the guide sleeve is slidably connected to the key groove on the stirring shaft 1 through the guide hook head key arranged on the inner side, and is fastened through a locking screw. The position of the combined stirrer can be adjusted through the guide hook head key and the key groove, and the gas is further dispersed and the reaction materials are stirred and mixed through the combined stirrer.

[0053] Further, in the embodiment, two combined stirrers are connected to the stirring shaft 1 above the aeration connecting rod 5, which are a first combined stirrer 7 and a second combined stirrer 8, the first combined stirrer 7 is arranged above the second combined stirrer 8, and the first combined stirrer 7 and the second combined stirrer 8 are both rotated around the stirring shaft 1 as the rotation shaft, the combined stirrer, the distribution aeration stirrer 3 and the self-rotation aeration stirrer 4 are coaxial, concentric and synchronous with the stirring shaft 1, the first combined stirrer 7 and the second combined stirrer 8 cooperate with the distribution aeration stirrer 3 and the self-rotation aeration stirrer 4 to uniformly disperse the gas into the container, so that the gas is in contact with the reaction solution and is mixed more uniformly and fully.

[0054] Further, as a preferred embodiment of the present application, the connection between the stirrer structure and the stirring shaft in the present application can also adopt other adjustable movable connection modes, the axial positions of the stirrers on the stirring shaft can be adjusted, the spacing between the aeration and the stirrer can be adjusted according to the actual reaction needs. Moreover, the structure and the number of the stirrer blades in the present application can be changed according to the actual reaction needs to ensure the full contact reaction of the gas-liquid materials.

[0055] Further, as the preferred embodiment of the present application, since each stirrer is connected with the key groove on the stirring shaft through the shaft sleeve and the guide key arranged on the shaft sleeve, the mutual position relationship of the combined stirrer and the aeration stirrer can be adjusted, and the type of different stirrers can be increased or reduced according to the actual reaction requirement, so that the multi-layer and multi-type combination mode is realized, the reaction area and reaction space in the reaction kettle are larger, the reaction stirring is more uniform, complete, energy-saving and efficient, the requirement of different process reactions can be met, and the reaction can achieve more ideal effect.

[0056] Further, as shown in Figure 1 The stirring device is used for the sufficient contact mixing and stirring of materials in the reaction kettle.

[0057] As shown in Figure 1 The upper end of the rack 10 is connected with a driving mechanism, and the transmission mechanism 14 is arranged in the rack 10.

[0058] Further, as the preferred embodiment of the present application, the sealing mechanism 11 is arranged in the rack 10, and the sealing mechanism 11 is sealed by a mechanical sealing device.

[0059] In the present application, the driving mechanism, the transmission mechanism 14 and the sealing mechanism 11 are all prior art, and the specific structure and connection mode will not be described here.

[0060] As shown in Figure 8As shown, the rotary joint assembly 2 comprises a tee 21, an inlet 22 and an outlet 23, the inside of the tee 21 is provided with a fixed inner tube structure, the inner tube does not rotate with the device, the upper end of the tee 21 is connected with an elbow 24, one end of the elbow 24 is connected with the upper end of the tee 21, the other end of the elbow 24 serves as the inlet 22, and the elbow 24 is movably connected with the tee 21, so that the adjustment of the gas inlet direction is facilitated; the side of the tee 21 is provided with the outlet 23, the lower end of the tee 21 is connected with a conversion joint 25, the upper end of the conversion joint 25 is threadedly connected with the lower end of the tee 21, the lower end of the conversion joint 25 is connected with the threaded flange 102 on the upper end of the stirring shaft 1 through a flange connecting disc 26, and a sealing gasket 27 is arranged, so that effective connection and fast sealing are realized, and the gas inlet and outlet are ensured.

[0061] The rotary joint assembly 2 realizes the bidirectional flow of the gas through the tee 21, the conversion joint 25 and the elbow 24, and simultaneously realizes the gas inlet and outlet while the stirring shaft 1 rotates, and the rotary joint assembly 2 moves synchronously, the effective connection of the gas inlet is realized by connecting the rotary joint assembly 2 on the upper end of the stirring shaft 1, and the assembly and disassembly are facilitated.

[0062] In the embodiment, the elbow 24 and the conversion joint 25 are prior art, and the specific structure and principle are not described herein.

[0063] In the embodiment, the control valve assembly is arranged in the gas phase space in the middle part of the stirring shaft 1 and connected with the stirring shaft 1, the control valve assembly adopts a pressure self-control type breather valve structure, the control valve assembly is provided with a valve rod adjusting part cooperating with the gas pressure action, and the circulation and repeated use of the gas in the reaction kettle are realized through the control valve assembly.

[0064] Specifically, as shown in Figure 1 、 Figure 9 The control valve assembly is arranged in the gas phase space in the upper part of the reaction kettle body 9 and connected with the stirring shaft 1. The control valve assembly adopts a breather valve structure, the breather valve 15 comprises a valve seat 151 and a screw cover 152, the screw cover 152 movably sleeves the upper end part of the valve seat 151, a valve rod adjuster 153 is arranged in the valve seat 151, the valve rod adjuster 153 can perform up-down telescopic movement under the action of external pressure, so as to push the relative movement between the valve seat 151 and the screw cover 152, and the gasket 154 is arranged between the upper end surface of the valve seat 151 and the lower end surface of the screw cover 152.

[0065] When the stirring device is in operation, gas enters into the stirring shaft 1 through the rotary joint assembly 2, under the action of internal pressure, the valve rod adjuster 153 is elongated to push the gasket 154 to tightly adhere to the screw cover 152, so that the breathing valve 15 is in a closed state, so that the gas can enter into the kettle body 9 along the stirring shaft 1, and then enter into the distribution gas stirring device 3 and the self-rotation gas stirring device 4 to be discharged; when the gas inlet valve of the rotary joint assembly 2 is closed or the stirring shaft 1 is in operation, the liquid and gas in the stirring shaft 1 are emptied due to the operation and centrifugal effect, so that a pressure difference is formed between the gas phase space above the liquid surface in the kettle body 9 and the stirring shaft 1, the breathing valve 15 is pushed to compress the valve rod adjuster 153 under the action of external pressure, so that the gasket 154 is separated from the screw cover 152, at this time, the breathing valve 15 is in an open state, and the gas in the gas phase space rapidly enters into the stirring shaft 1 through the breathing valve 15 to be recycled.

[0066] Further, the opening degree of the breathing valve 15 can be automatically adjusted according to the actual pressure, and the breathing valve 15 can realize the circulation of gas with different densities according to the relative position of the breathing valve 15 on the stirring shaft 1, so that the high efficiency and energy saving effect is achieved.

[0067] The breathing valve 15 is arranged on the stirring shaft 1, so that the gas circulation with different densities and the opening degree of pressure adjustment are realized, the recycling of different gas mixing ratios required by the reaction is realized, the internal self-circulation of the gas in the reaction kettle is realized, the gas circulation recycling required by the reaction can be realized without external auxiliary facilities, and the high efficiency and energy saving effect of the gas is achieved.

[0068] The reaction kettle generates heat due to friction in normal production high-temperature working conditions and operation, or the sealing parts and operating parts of the sealing device are easily worn and damaged in normal production low-temperature working conditions and crystallization conditions, the service life is far lower than the expected service life, the maintenance is frequent, the production is delayed, the cost is increased, the sealing leakage has an influence on the material and the reaction effect, and the product quality is greatly influenced.

[0069] Therefore, in the embodiment, the heat exchange assembly 16 is further arranged, the heat exchange assembly 16 is arranged on the outer periphery of the stirring shaft 1, and the heat exchange assembly 16 is arranged at the upper end of the gas stirring device, the heat exchange assembly 16 is provided with the inlet pipe 161 and the outlet pipe 162.

[0070] Specifically, as shown in Figure 1 , Figure 10 The heat exchange assembly 16 is fixedly sleeved outside the stirring shaft 1, the lower end of the heat exchange assembly 16 extends into the reaction kettle, the heat exchange assembly 16 comprises a water jacket body 163, the water jacket body 163 is vertically arranged on the outer periphery of the stirring shaft 1, a cavity is formed between the water jacket body 163 and the stirring shaft 1, and a heat exchange space is further formed. The upper end of the water jacket body 163 is fixedly connected with the cover plate 164, and the cover plate 164 is fixedly connected with the side of the rack 10 through the connecting plate 165.

[0071] Further, the heat exchange assembly 16 is also arranged inside the sealing mechanism 11, so that the heat exchange assembly 16 can realize the conversion function of heating and cooling the stirring shaft 1 and the sealing mechanism 11, when crystallization or condensation phenomenon occurs in the reaction, the stirring shaft 1 and the sealing mechanism 11 can be heated by the heat carrier, so as to prevent the operation and the sealing mechanism from being invalid and damaged, and the gas in the stirring shaft 1 can also be preheated. And if the reaction in the reaction kettle is high-temperature working condition or the heat generation appears high temperature, the stirring shaft 1 and the sealing mechanism 11 can be cooled by the cold carrier, so as to prevent the bearings and the sealing elements from being damaged or invalid under high temperature, so that the equipment can continue to operate for a long time, and the service life of the operating elements such as the sealing elements and the stirring shaft is greatly prolonged.

[0072] Further, the heat exchange assembly 16 is provided with an inlet pipe 161 and an outlet pipe 162 for the heat exchange carrier and the inflow and outflow, and a temperature measuring part extending into the heat exchange space is arranged on the sealing plate 164, which is used for monitoring the temperature change of the cold and hot carriers in the heat exchange space, and cooperating with the heat exchange assembly 16 to adjust the temperature, so as to more effectively protect the operating and sealing elements.

[0073] Specifically, the temperature measuring part is provided with an explosion-proof armored platinum resistance 166 and a temperature measuring element 167, so that the temperature can be monitored according to the reaction condition.

[0074] Further, the connection between the upper end of the heat exchange assembly 16 and the stirring shaft 1 adopts a sealing mechanism of double-line O-shaped ring 168, and the connection between the lower end of the heat exchange assembly 16 located in the reaction kettle and the stirring shaft 1 is not only provided with a traditional sealing structure composed of an O-shaped sealing ring, but also provided with a packing sealing structure 169.

[0075] Specifically, the packing sealing structure 169 is provided with a gland 1691, a packing chamber 1692 and a packing 1693, the packing 1693 is arranged between the gland 1691 and the packing chamber 1692, the gland 1691 and the packing chamber 1692 are fixedly connected through a fastening piece 1694, the fastening piece 1694 can be a connecting structure composed of a stud, a nut and a stop washer, and the packing chamber 1692 is fixedly connected with the stirring shaft 1 through a second set screw 1695.

[0076] In the present application, the upper end and the lower end of the heat exchange assembly 16 respectively adopt double-line sealing rings and packing seals, so that the sealing performance is more reliable, the corrosion resistance is strong, the material range is wider, the structure is less complex, the manufacturing and maintenance are convenient, the durability and continuous operation are good, the practicality is strong, and the service life of the operating elements and the sealing elements is prolonged.

[0077] The working principle of the present application is as follows:

[0078] The present application provides a stirring device and a reaction kettle, which can make gas and other reaction materials fully contact and react, and can realize long-term sealing and effective self-suction recirculation. The stirring shaft 1 rotates under the driving action of the motor 12 and the speed reducer 13, and drives the distribution gas stirring device 3, the self-rotation gas stirring device 4, the gas connection rod 5, the first combined stirring device 7 and the second combined stirring device 8 to move synchronously. The distribution gas stirring device 3 rotates coaxially, concentrically and synchronously with the stirring shaft 1. During the rotation process, the liquid in the annular tube 37 is discharged under the action of centrifugal force to form a vacuum, and the gas is discharged from the gas hole of the annular tube 37. The gas is further dispersed and distributed into the liquid by the blades of the distribution gas stirring device 3. The self-rotation gas stirring device 4 also rotates synchronously with the stirring shaft 1 under the connection of the gas connection rod 5. During the rotation process, the liquid in the self-rotation gas stirring device 4 and the gas connection rod 5 is discharged under the action of centrifugal force to form a vacuum. The gas enters the self-rotation gas stirring device 4 from the stirring shaft 1 through the gas connection rod 5, and the self-rotation gas stirring device 4 rotates on the gas connection rod 5. The gas is discharged simultaneously in revolution and rotation, and dynamically fills the entire container without dead angle. At this time, the dispersed gas is further uniformly dispersed by the first combined stirring device 7 and the second combined stirring device 8, and is uniformly dispersed in all directions of the liquid, so that the reaction space and contact area are larger and more uniform, and the mixing reaction is fully carried out.

[0079] When the device is working, the gas enters the stirring shaft 1 from the rotary joint assembly 2, and then enters the distribution gas stirring device 3 and the self-rotation gas stirring device 4 to be discharged. Due to the pressure difference caused by rotation and centrifugal force, the gas in the gas phase space above the liquid surface rapidly enters the stirring shaft 1 through the breathing valve 15 to be recycled. During operation, heat or cold liquid can be introduced into the heat exchange assembly 16 according to the reaction crystallization or temperature, so as to heat or cool the stirring shaft 1 and the sealing mechanism 11. The temperature is monitored by the temperature measuring part, and the temperature is adjusted at any time to ensure the normal continuous operation of the device and prolong the service life of the device.

[0080] When the stirring shaft 1 rotates under the driving action of the driving mechanism, the gas stirring device rotates synchronously, and the gas enters the gas stirring device through the gas channel, and then is discharged from the gas stirring device, so that the gas fully contacts and mixes with other reaction materials, and the gas is uniformly distributed to each range of the device. The gas dispersion coverage is wide and uniform, which can accelerate the reaction rate and improve the product yield. The remaining gas in the gas phase space is recycled by the control valve assembly and the stirring shaft 1 into the reaction liquid to realize the recycling of the required gas for reaction. The present application can be widely used in the field of gas participating reaction.

[0081] And the present application can be carried out according to the reaction needs of gas, gas temperature adjustment, stirring shaft 1 can also be used as the gas, liquid material involved in the reaction process, heat exchange component 16 can cool the stirring shaft 1 and sealing mechanism 11 greatly prolong its service life, also can carry out heating to the crystallization reaction, make the sealing and running device effective, prevent the device from being damaged due to crystallization, namely ensure normal continuous operation, greatly prolong the service life. The present application has good gas circulation rate, high utilization rate, can realize multiple gas circulation at the same time, gas volume can be adjusted, large dispersion area, uniform dispersion, all-around no dead angle, high interchangeability, suitable for different types, wide range of viscosity of material, high stability, stable product quality, energy saving and consumption reduction, etc. Significant advantages, while can achieve reasonable reuse of energy, energy saving and environmental protection, reduce cost, ensure high quality and high efficiency of the multi-functional effect of output.

[0082] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0083] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0084] The above only describes the preferred embodiments of the present application and cannot be used to limit the present application, and any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A stirring device comprising a drive mechanism and a stirring mechanism, the drive mechanism driving the stirring mechanism to rotate, characterized in that, The stirring mechanism is provided with a stirring shaft and a gas-exchanging stirrer connected with the stirring shaft, the stirring shaft is provided with a gas passage and a control valve assembly connected with the gas passage, the first end of the gas passage is connected with the gas-exchanging stirrer, and the second end of the gas passage is connected with the gas inlet hole provided on the stirring shaft; the gas-exchanging stirrer comprises a gas distribution assembly and stirring blades, and the gas distribution assembly is in communication with the gas passage; the control valve assembly is arranged in the gas phase space of the middle part of the stirring shaft and is connected with the stirring shaft, the control valve assembly adopts a pressure self-control type breathing valve structure, and the control valve assembly is provided with a valve rod adjusting part matched with the action of gas pressure; The gas-exchanging stirrer comprises a distribution gas-exchanging stirrer and a self-rotating gas-exchanging stirrer, the self-rotating gas-exchanging stirrer revolves under the driving action of the stirring shaft and the connecting device, and meanwhile, the self-rotating gas-exchanging stirrer can rotate by itself; the self-rotating gas-exchanging stirrer comprises second stirring blades, and the second stirring blades are provided with a gas guide mechanism.

2. A stirring device according to claim 1, characterized in that The distribution gas-exchanging stirrer comprises a gas distribution mechanism in communication with the gas passage and first stirring blades arranged above the gas distribution mechanism, and the gas distribution mechanism is provided with gas holes.

3. A stirring device according to claim 2, wherein The self-rotating gas-exchanging stirrer is connected with the stirring shaft through the connecting device.

4. A stirring device according to claim 3, wherein The length of the connecting device is adjustable, and the rotating radius of the self-rotating gas-exchanging stirrer is adjusted by adjusting the length of the connecting device.

5. A stirring device according to claim 1, characterized in that Further comprising at least one combined stirrer, the combined stirrer is arranged above the gas-exchanging stirrer, the combined stirrer and the gas-exchanging stirrer rotate synchronously and coaxially with the stirring shaft, and the stirring shaft is connected with at least one gas-exchanging stirrer provided with a gas passage.

6. A stirring device according to any one of claims 1-5, characterized in that Further comprising a heat exchange assembly, the heat exchange assembly is arranged on the outer periphery of the stirring shaft, and the heat exchange assembly is arranged at the upper end of the gas-exchanging stirrer, the heat exchange assembly is provided with an inlet pipe and an outlet pipe.

7. A stirring device according to claim 6, characterised in that The upper end of the heat exchange assembly adopts a sealing structure of double-line sealing rings, and the lower end of the heat exchange assembly is provided with a packing sealing structure at the connection with the stirring shaft.

8. A stirring device according to claim 1, characterized in that Further comprising a rotary joint assembly, the rotary joint assembly is arranged at the upper end of the stirring shaft, the rotary joint assembly is provided with an inlet and an outlet, and the rotary joint assembly is provided with a movable connecting rotary joint.

9. A reaction vessel comprising a vessel body, characterised in that, Further comprising the stirring device according to any one of claims 1-8, one end of the stirring device extends into the kettle body and extends to the lower part of the kettle body, and the connection between the stirring device and the kettle body is sealed by a sealing mechanism.

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