CN212999405U - Side-feeding stirrer for biological fermentation tank - Google Patents
Side-feeding stirrer for biological fermentation tank Download PDFInfo
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- CN212999405U CN212999405U CN202020577376.XU CN202020577376U CN212999405U CN 212999405 U CN212999405 U CN 212999405U CN 202020577376 U CN202020577376 U CN 202020577376U CN 212999405 U CN212999405 U CN 212999405U
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Abstract
The utility model discloses a side-feeding stirrer used on a biological fermentation tank, which comprises a power unit, a stirring shaft and a stirring blade group; a sealing shaft sleeve component and a stirring paddle group assembly component are sequentially arranged on the outer side section of the stirring shaft in the biological fermentation tank from top to bottom; the sealing shaft sleeve assembly comprises a shaft sleeve, an indirect bearing box, a static ring seat, a blocking sleeve, an outer conical roller bearing, an inner conical roller bearing and a locking ring; a first mechanical sealing assembly and a second mechanical sealing assembly are respectively arranged on two sides of the sealing shaft sleeve assembly, so that an annular sealing cavity for injecting lubricating oil is formed between the shaft sleeve and the stirring shaft; the stirring paddle group is arranged at the conical bottom end of the stirring shaft and is connected with the conical end of the stirring shaft through a single semicircular key; this formula agitator is advanced to side effectively avoids the easy problem of buckling of axis of rotation overlength to make sealed cavity internal pressure be greater than jar internal pressure and open in order to avoid mechanical seal to open in the twinkling of an eye easily, extension (mixing) shaft life.
Description
Technical Field
The utility model relates to a agitator technical field for biological fermentation, in particular to side feed type agitator for on fermentation tank.
Background
Biological fermentation is widely applied to various industries such as chemical industry, medicine, food and the like, stirring equipment is required to be additionally arranged on the side wall of the lower part of a tank body of a large-scale biological fermentation tank, and as the diameter of the tank body is large and the installation mode needs to be a side-in type, the length of a stirring shaft is several times of the length of a shaft of common stirring equipment, the shaft is easy to bend and deform as the shaft is longer under the influence of gravity, and the design of the shaft is also a difficult point.
In addition, because the fermentation product contains particles or living bacteria, the particles or living bacteria cannot be scattered or killed during stirring, the rotating speed of the stirring paddle also has certain requirements, the rotating speed is required to be low, the rotating speed is basically within 300 r/min, and a blade with high thrust cannot be used, so the structural design of the stirrer has important significance.
The prior art is for preventing (mixing) shaft bending deformation, install long axle sleeve and fixed additional at the (mixing) shaft outside, add lubricating oil in the axle sleeve cavity, mechanical seal is used to the stirring rake end, the other end uses the skeleton oil blanket to seal lubricating oil in the cavity, the shortcoming of this kind of structure lies in that lubricating oil pressure is less than fermentation tank internal pressure in the cavity, especially mechanical seal opens easily in the twinkling of an eye when the agitator opens and stops, lead to in the fermentation tank medium flow cavity, pollute the bearing, thereby make the bearing damage lead to the agitator to leak, the medium is located if flowing to the speed reducer in the fermentation tank, still can.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can solve above-mentioned side formula agitator that inclines for fermentation tank (mixing) shaft that easily appears in the use is crooked, paddle thrust is too big and mechanical seal easily opens the side formula agitator that inclines for on fermentation tank.
In order to avoid that the mechanical seal is easy to open instantly when the stirrer is started or stopped, so that the medium in the fermentation tank flows into the cavity to pollute the bearing, the bearing is damaged to cause leakage of the stirrer, and the medium in the fermentation tank flows to the speed reducer; risk of the damage of speed reducer even, the utility model discloses advancing formula agitator to current side and optimizing the upgrading, its concrete technical scheme as follows:
a side-feeding stirrer used on a biological fermentation tank comprises a power unit, a stirring shaft connected with the power unit and a stirring blade component, wherein the stirring blade component is positioned in the biological fermentation tank body; the other end of the bracket flange is connected with a tank body flange on the side wall of the biological fermentation tank body; one end of the stirring shaft is connected with a power output shaft of the speed reducing motor; a first mechanical sealing component is arranged between the stirring shaft and the bracket flange on the side of the biological fermentation tank body; the other end of the stirring shaft passes through the bracket flange and extends into the biological fermentation tank body; a stirring paddle component is arranged at the front end of the stirring shaft in the biological fermentation tank body; the method is characterized in that:
a sealing shaft sleeve is sleeved on the outer circumference direction of the part of the stirring shaft extending into the biological fermentation tank body, a sealing shaft sleeve flange is welded at one end of the sealing shaft sleeve, the sealing shaft sleeve flange is connected with a bracket flange, and an indirect bearing box is fixedly connected at the other end of the sealing shaft sleeve; the indirect bearing box is internally provided with a bearing box and a static ring seat, and the indirect bearing box, the bearing box and the static ring seat are fastened and connected through bolt connecting pieces; a baffle sleeve integrated with the bearing box is arranged in the bearing box, and a central hole is formed in the baffle sleeve; an outer conical roller bearing and an inner conical roller bearing are respectively arranged on two sides of the blocking sleeve in the bearing box, and a locking ring for pressing the inner conical roller bearing is arranged on the bearing box on the power unit side in a threaded manner; a transmission shaft penetrates through the bearing box, one end of the transmission shaft on the power unit side is connected with a spline sleeve through a spline, and the spline sleeve is welded at the adjacent end of the stirring shaft; a second mechanical sealing assembly is arranged on the transmission shaft on the outer side of the static ring seat, a taper sleeve is arranged on the outer side of the second mechanical sealing assembly, and the taper sleeve is connected with the taper matching section of the transmission shaft through a semicircular key; a locking assembly is assembled on the transmission shaft on the outer side of the taper sleeve to compress a second mechanical sealing assembly; the stirring blade assembly is fixedly arranged on the taper sleeve through a fastener;
the first mechanical seal assembly and the second mechanical seal assembly enclose the seal shaft sleeve to form a closed seal cavity, and an oil filling hole and an oil drainage hole communicated with the seal cavity are formed in an end cover of the first mechanical seal assembly.
In the above technical solution, preferably, a power output shaft of the reduction motor is a hollow shaft; the stirring shaft is inserted into the hollow shaft, and a threaded hole is formed in the outer end face of the stirring shaft; a stop block, a baffle ring and a pressure plate are arranged in the central hole of the power output shaft from inside to outside in sequence; the outer diameter of the outer end part of the pressure plate is larger than the inner diameter of a central hole of the power output shaft; and a fastening bolt is arranged in a central hole of the power output shaft, and the fastening bolt sequentially penetrates through the pressing plate, the baffle ring and the check block to be in threaded connection with a threaded hole of the stirring shaft. The disassembly and maintenance operation are convenient, and the maintenance difficulty is reduced.
In the above technical scheme, preferably, a mechanical seal assembly access hole is formed in the bracket flange corresponding to the position of the first mechanical seal assembly. And the overhaul of the mechanical seal assembly is improved.
In the above technical solution, preferably, a support ring is installed in the seal shaft sleeve, the support ring is provided with an oil passing hole along the axial direction, and the support ring is fixedly installed on the stirring shaft. The stress of the stirring shaft is balanced, the bending deformation of the stirring shaft caused by long-time running is reduced, and the defect of high abrasion speed caused by the bending deformation is further avoided;
in the above technical scheme, preferably, a spiral pressurizing groove consistent with the rotation direction of the stirring shaft is arranged on the transmission shaft at the bearing box blocking sleeve section. When the transmission shaft rotates, the spiral groove pushes lubricating oil in the sealed cavity towards the sealing direction of the blade end, pressure is applied to the lubricating oil in the sealed cavity, and the mechanical seal is opened instantly, so that a medium in the fermentation tank cannot flow into the sealed cavity to pollute the bearing, and the service life of the bearing is prolonged.
The stirring shaft is of a split structure and comprises a power connecting shaft, a middle spline shaft and a power output shaft; one end of the power connecting shaft is connected with the power shaft; the other end of the power connecting shaft is connected with one end of a spline shaft of the intermediate shaft through a spline; the other end of the middle spline shaft is connected with one end of the power output shaft through a spline, and the other end of the power output shaft is provided with a blade assembly through a bearing box assembly in a stirring manner.
In the above technical scheme, preferably, an online maintenance sealing ring is arranged on the stirring shaft on the inner side of the bracket flange; and a sealing ring is embedded on the sealing matching surface of the online maintenance sealing ring or the tank body sealing flange.
Adopt above-mentioned technique, the utility model has the advantages of as follows: the technical problems that the stirrer in the prior art is complex in structure, multiple in power unit accessories, easy to leak mechanical seal and the like are solved by adopting the technical scheme, and the utility model discloses the pressure oil is added in the sealed cavity to balance the damage of the pressure in the tank to the bearing box assembly and the mechanical seal assembly, and simultaneously, when the stirrer is overhauled, the pressure in the sealed cavity can be increased to ensure that the pressure in the sealed cavity is greater than the pressure generated by the medium in the tank, so that the mechanical seal is easy to open instantly when the stirrer is started or stopped, the medium in the fermentation tank flows into the cavity, the bearing is polluted, the bearing is damaged to ensure that the stirrer leaks, and the medium in the fermentation tank flows to the speed reducer; and even the risk of damage to the reducer. Meanwhile, various operation parameters such as vibration, noise and the like of the stirrer are reduced, and the service life of the stirring shaft is prolonged; the stability and the reliability of the equipment are improved, and the efficiency of the power unit is improved, so that the purposes of energy conservation and emission reduction of the stirring equipment are achieved. In addition, the utility model discloses can also the wide application in the occasion of low rotational speed stirring such as other chemical industry, medicine and food.
Compared with the prior art, the side-feeding stirrer used on the biological fermentation tank can be widely applied to other low-rotating-speed stirring occasions such as chemical engineering, medicine, food and the like, the structural design of the matching of the shaft sleeve component and the rotating shaft enables the stirrer to effectively balance the damage of the pressure in the tank to the bearing box component and the mechanical sealing component through the support ring arranged in the shaft sleeve and the injected lubricating oil when in use, and meanwhile, the split structural design of the structural design and the rotating shaft can also effectively avoid the problem that the rotating shaft is too long and is easy to bend; in addition, the structural design of its pressure boost cover and on-line measuring ring makes its pressure that can increase sealed cavity when using or overhauing for the produced pressure of jar interior medium is greater than to the pressure in sealed cavity, and then avoids the agitator to open when opening and stop mechanical seal and open easily in the twinkling of an eye, leads to in the fermentation cylinder medium inflow cavity, pollutes the bearing, makes the risk of the damage of bearing damage or even speed reducer, improve equipment's stability and reliability when extension (mixing) shaft life.
Drawings
FIG. 1 is a schematic view of a side-entry agitator of the present invention for use in a bio-fermentation tank;
FIG. 2 is an enlarged view of a portion I of FIG. 1;
FIG. 3 is an enlarged view of a portion II of FIG. 1;
FIG. 4 is an enlarged partial view of section I of a side-entry agitator used in a fermenter according to example 2 of the present invention;
FIG. 5 is a schematic structural view of the stirring shaft and the stirring blade assembly of the side-feeding type stirrer used in the bio-fermentation tank of the present invention.
Detailed Description
The present invention will be further described with reference to the following drawings and specific examples, but the following examples are by no means limiting the present invention. For ease of illustration and explanation, the directional word "top" referred to in the description of this embodiment specifically refers to the end adjacent to the power unit 10, and correspondingly, "bottom" specifically refers to the end distal from the power unit 10.
Example 1
As shown in FIGS. 1 to 4, the side-entry agitator for use in a fermenter comprises a power unit 10, an agitating shaft 20 and an agitating blade group 30; the power unit 10 adopts a speed reducing motor; a reducer housing of the reduction motor is detachably fixed to the top end of the bracket flange 50 through bolts; the bottom end of the bracket flange 50 is fixed on a tank body flange 41 arranged at the tank opening of the biological fermentation tank through a connecting bolt, so that the power unit 10 is arranged above the tank opening of the biological fermentation tank; the stirring shaft 20 is inserted into the central hole of the bracket flange 50, the top end of the stirring shaft is connected with the power output shaft 101 of the power unit 10, and the bottom end of the stirring shaft is provided with the stirring blade group 30;
the stirring shaft 20 is a split structure consisting of a power connecting shaft 201, a middle spline shaft 202 and a power output shaft 203; wherein, the top end of the power connecting shaft 201 is connected with the power output shaft 101 of the power unit 10, and the bottom end is provided with a spline; the bottom end of the power output shaft 203 is a conical end, and the top end is provided with a spline; two ends of the middle spline shaft 202 are respectively provided with a spline sleeve matched with the spline, so that the top end of the middle spline shaft 202 and the spline at the bottom end of the power connecting shaft 201 form spline connection, and the bottom end of the middle spline shaft 202 and the spline at the bottom end of the power output shaft 203 form spline connection; the first mechanical seal assembly 60 is arranged on the power connecting shaft 201, the second mechanical seal assembly 80 is arranged on the power output shaft 203, and the seal shaft sleeve assembly 70 is arranged on the middle spline shaft 202 and the power output shaft 203; the split structure of the stirring shaft 20 is easy to process, install and maintain, can ensure enough clearance to ensure coaxiality, and can rotate along with the stirring shaft;
the power output shaft 101 of the power unit 10 is a hollow shaft, the upper part of the power connecting shaft 201 of the stirring shaft 20 is inserted into the hollow shaft, and meanwhile, a stop block 22, a stop ring 23 and a pressure plate 24 which is covered on the top end face of the power output shaft 101 are sequentially arranged on the top end face of the power connecting shaft 201 from bottom to top, so that the stirring shaft 20 and the power output shaft 101 are connected and fixed through a first fastening bolt 25 which is sequentially penetrated in the pressure plate 24, the stop ring 23, the stop block 22 and a screw hole which is axially arranged from the top end face of the stirring shaft 20;
a sealing shaft sleeve component 70 and a stirring paddle group assembly component are sequentially arranged at the outer side section of the stirring shaft 20 positioned in the biological fermentation tank from top to bottom, and a first mechanical sealing component 60 and a second mechanical sealing component 80 are respectively arranged at two sides of the sealing shaft sleeve component 70; wherein the content of the first and second substances,
the sealed shaft sleeve assembly 70 comprises a shaft sleeve 700, a shaft sleeve flange plate 701, an indirect bearing box 702, a bearing box 703, a static ring seat 704, a blocking sleeve 706, an outer conical roller bearing 707, an inner conical roller bearing 708 and a locking ring 709; in particular, the amount of the solvent to be used,
the shaft sleeve 700 is sleeved outside the stirring shaft 20 and is arranged coaxially with the stirring shaft; the shaft sleeve flange plate 701 is fixed at the top end of the shaft sleeve 700 through a connecting bolt, so that the shaft sleeve 700 is fixed at the bottom of the bracket flange 50 through the shaft sleeve flange plate 701; the indirect bearing box 702 is sleeved and welded and fixed on the inner side of the bottom end of the shaft sleeve 700, and the indirect bearing box 702 is flush with the end face of the bottom end of the shaft sleeve 700; the bearing box 703 is sleeved on the inner side of the indirect bearing box 702, the top end of the bearing box 703 protrudes out of the top end of the indirect bearing box 702, the static ring seat 704 is sleeved on the inner side of the bottom end of the bearing box 702, and the outer walls of the bottom ends of the bearing box 703 and the static ring seat 704 are respectively provided with an annular boss, so that the bearing box 703 and the static ring seat 704 which are sequentially overlapped and sleeved are fixed on the indirect bearing box 702 and the shaft sleeve 700 through a plurality of second fastening bolts 705 which are uniformly distributed and arranged along the circumferential direction from the end surface of the bottom;
as a preferable technical solution of this embodiment, a support ring 712 is sleeved and fixed on the outer wall of the middle spline shaft 202 located in the shaft sleeve 700, and is used for balancing the stress applied to the whole stirring shaft 20, reducing the bending deformation of the stirring shaft 20 caused by long-time operation, and further avoiding the defect of high wear speed caused by the bending deformation; meanwhile, a gap is reserved between the outer wall of the support ring 712 and the shaft sleeve 700, and a plurality of axial oil passing holes 713 are formed in the support ring 712 along the circumferential direction so as to ensure the connectivity of the annular chamber;
the blocking sleeve 706 is an annular sleeve which is arranged inside the bearing housing 703 and is formed integrally with the bearing housing 703; the outer conical roller bearing 707 and the inner conical roller bearing 708 are respectively press-fitted on the bottom end surface and the top end surface of the blocking sleeve 706, so that the bottom end of the power output shaft 203 of the stirring shaft 20 sequentially penetrates through the central holes of the inner conical roller bearing 708, the blocking sleeve 706 and the outer conical roller bearing 707, and the power output shaft 203 forms interference fit with the outer conical roller bearing 707 and the inner conical roller bearing 708 respectively, so that the stirring shaft 20 freely rotates in the sealing shaft sleeve assembly 70; the locking ring 709 is sleeved and fixed on the inner wall of the top end of the bearing box 703 in a threaded connection manner, so that the bottom end of the locking ring is pressed on the end face of the top end of the inner tapered roller bearing 708 in a press fit manner;
in order to ensure the sealing performance of the sealed bushing assembly 70, at least one sealing ring is arranged on the contact surface between the indirect bearing box 702 and the bearing box 703, the contact surface between the bearing box 703 and the static ring seat 704, the contact surface between the static ring seat 704 and the second mechanical seal assembly 80, and the contact surface between the second mechanical seal assembly 80 and the taper sleeve 90;
the first mechanical seal assembly 60 is sleeved outside the power connecting shaft 201 of the stirring shaft 20 and fixed on the top surface of the disc of the bracket flange 50, so that a seal is formed between the bracket flange 50 and the power connecting shaft 201, the second mechanical seal assembly 80 is sleeved outside the power output shaft 203 of the stirring shaft 20 and abuts against the bottom end of the static ring seat 704, so that a seal is formed between the static ring seat 704 and the stirring shaft 20, and a seal ring cavity 100 is formed between the shaft sleeve 700 and the power output shaft 203; an oil filling port 110 and an oil outlet 111 are further arranged on the first mechanical sealing assembly 60, and before and after the stirrer is used, lubricating oil is respectively filled into the sealing ring cavity chamber 100 or emptied through the oil filling port 110 and the oil outlet 111;
as a preferable technical solution of this embodiment, a pressurizing sleeve 714 is sleeved and fixed on the outer wall of the power output shaft 203 between the outer conical roller bearing 707 and the inner conical roller bearing 708, and a spiral pressurizing groove in the same direction as the rotation direction of the stirring shaft is formed on the outer wall of the pressurizing sleeve 714; when the pressure increasing sleeve 714 is used, the pressure increasing sleeve 714 synchronously rotates along with the power output shaft 203, at the moment, lubricating oil in the sealing ring cavity chamber 100 can be pushed towards the sealing direction of the blade end through the pressure increasing sleeve 714, so that pressure is provided for the lubricating oil in the sealing ring cavity chamber 100, when the second mechanical sealing assembly 80 is instantly opened, a medium in the biological fermentation tank cannot flow into the sealing ring cavity chamber 100 under the action of internal pressure to pollute a bearing, and the service life of the bearing is prolonged;
the stirring blade assembly comprises a taper sleeve 90, a single semicircular key 91 and a locking assembly 92; the bottom end of the stirring shaft 20 is a conical end, and a semi-circular key groove with a built-in semi-circular key 91 is formed in the conical outer wall of the stirring shaft, so that the conical sleeve 90 sleeved at the bottom end of the stirring shaft 20 is connected to the conical end of the stirring shaft 20 through the semi-circular key 91; the stirring paddle group 30 is composed of a mounting sleeve and a plurality of paddles arranged along the uniform part of the mounting sleeve, the mounting sleeve is sleeved on the outer side of the bottom end of the shaft sleeve 700, and an annular table is arranged on the outer wall of the taper sleeve 90, so that the mounting sleeve is fixed on the taper sleeve 90 through a plurality of third fastening bolts uniformly distributed along the circumferential direction; the locking assembly 92 is fixed at the bottom end of the stirring shaft 20 and is press-fitted on the bottom end face of the taper sleeve 90 so as to tightly press the second mechanical seal assembly 80 through the taper sleeve 90;
as a preferred technical solution of this embodiment, an access hole 51 is opened on the bracket flange 50 at a position corresponding to the first mechanical seal assembly 60, for performing necessary access to the critical first mechanical seal assembly 60.
Example 2
As shown in FIG. 5, the side-entry agitator used in the fermenter was substantially the same in structure as the side-entry agitator of example 1 except that: the power unit 10 adopts an asynchronous motor; meanwhile, based on the consideration that the first mechanical seal assembly 60 is an adjacent power unit, when the mechanical seal is opened instantly, the medium in the tank 40 may flow into the inner side of the shaft sleeve, and even into the power unit 10 to cause damage, the power connecting shaft 201 below the bracket flange 50 is provided with the online maintenance sealing ring 26, the top end edge of the online maintenance sealing ring 26 is processed with a first annular conical surface, and the annular conical surface is embedded with the sealing ring 27; correspondingly, the hole bottom edge of the central through hole of the bracket flange 50 is processed into a second annular conical surface which is matched with the annular conical surface of the line maintenance sealing ring 26, so that when the line maintenance sealing ring 26 is lifted to be contacted with the bracket flange 50, sealing is formed between the first annular conical surface of the line maintenance sealing ring 26 and the second annular conical surface of the bracket flange 50; in addition, an access opening 51 is formed in the bracket flange 50 at a position corresponding to the first mechanical seal assembly 60, so that necessary access to the critical first mechanical seal assembly 60 is facilitated.
The structural design can realize the online maintenance of the first mechanical seal assembly 60, namely after the power unit 10 is dismantled, the power connection shaft moves towards the bracket flange 50 side through external force traction, so that the online maintenance seal ring 26 is sealed and attached to the bottom surface of the bracket flange 50 through the seal ring 27, and further the maintenance seal is realized; in this state, the first mechanical seal assembly 60 can be replaced or maintained, the labor intensity and the maintenance cost are effectively reduced, and the mechanical seal assembly is high in operability, safe and reliable.
To sum up, the technical scheme of the side-feeding type stirrer solves the technical problems that the conventional stirrer is complex in structure, multiple in power unit accessories, easy to leak mechanical seal and the like, the sealing ring cavity chamber is arranged outside the rotating shaft and used for injecting lubricating oil to balance the damage of pressure in the tank to the bearing box assembly and the mechanical seal assembly, and meanwhile, when the stirrer is overhauled, the pressure of the sealing cavity chamber can be increased to enable the pressure in the sealing cavity chamber to be larger than the pressure generated by medium in the tank, so that the phenomenon that the mechanical seal is easily and instantly opened when the stirrer is started and stopped, the medium in the fermentation tank flows into the cavity and pollutes the bearing, the stirrer is damaged to cause leakage, and if the medium in the fermentation tank flows to the speed reducer, even the risk of damage of the speed reducer; meanwhile, various operation parameters such as vibration and noise of the stirrer can be effectively reduced in the actual use process, and the service life of the stirring shaft is prolonged; the stability and the reliability of the equipment are improved, and the efficiency of the power unit is improved, so that the purposes of energy conservation and emission reduction of the stirring equipment are achieved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A side-feeding stirrer used on a biological fermentation tank comprises a power unit, a stirring shaft connected with the power unit and a stirring blade component, wherein the stirring blade component is positioned in the biological fermentation tank body; the other end of the bracket flange is connected with a tank body flange on the side wall of the biological fermentation tank body; one end of the stirring shaft is connected with a power output shaft of the speed reducing motor; a first mechanical sealing component is arranged between the stirring shaft and the bracket flange on the side of the biological fermentation tank body; the other end of the stirring shaft passes through the bracket flange and extends into the biological fermentation tank body; a stirring paddle component is arranged at the front end of the stirring shaft in the biological fermentation tank body; the method is characterized in that:
a sealing shaft sleeve is sleeved on the outer circumference direction of the part of the stirring shaft extending into the biological fermentation tank body, a sealing shaft sleeve flange is welded at one end of the sealing shaft sleeve, the sealing shaft sleeve flange is connected with a bracket flange, and an indirect bearing box is fixedly connected at the other end of the sealing shaft sleeve; the indirect bearing box is internally provided with a bearing box and a static ring seat, and the indirect bearing box, the bearing box and the static ring seat are fastened and connected through bolt connecting pieces; a baffle sleeve integrated with the bearing box is arranged in the bearing box, and a central hole is formed in the baffle sleeve; an outer conical roller bearing and an inner conical roller bearing are respectively arranged on two sides of the blocking sleeve in the bearing box, and a locking ring for pressing the inner conical roller bearing is arranged on the bearing box on the power unit side in a threaded manner; a transmission shaft penetrates through the bearing box, one end of the transmission shaft on the power unit side is connected with a spline sleeve through a spline, and the spline sleeve is welded at the adjacent end of the stirring shaft; a second mechanical sealing assembly is arranged on the transmission shaft on the outer side of the static ring seat, a taper sleeve is arranged on the outer side of the second mechanical sealing assembly, and the taper sleeve is connected with the taper matching section of the transmission shaft through a semicircular key; a locking assembly is assembled on the transmission shaft on the outer side of the taper sleeve to compress a second mechanical sealing assembly; the stirring blade assembly is fixedly arranged on the taper sleeve through a fastener;
the first mechanical seal assembly and the second mechanical seal assembly enclose the seal shaft sleeve into a closed seal chamber; the sealed cavity is filled with pressure oil with pressure greater than medium in the tank body, and an oil filling hole and an oil drainage hole which are communicated with the sealed cavity are formed in the end cover of the first mechanical sealing assembly.
2. A side entry agitator for use on a bio-fermentor in accordance with claim 1, characterized by: the power output shaft of the speed reducing motor is a hollow shaft; the stirring shaft is inserted into the hollow shaft, and a threaded hole is formed in the outer end face of the stirring shaft; a stop block, a baffle ring and a pressure plate are arranged in the central hole of the power output shaft from inside to outside in sequence; the outer diameter of the outer end part of the pressure plate is larger than the inner diameter of a central hole of the power output shaft; and a fastening bolt is arranged in a central hole of the power output shaft, and the fastening bolt sequentially penetrates through the pressing plate, the baffle ring and the check block to be in threaded connection with a threaded hole of the stirring shaft.
3. A side entry agitator for use on a bio-fermentor in accordance with claim 1, characterized by: and a mechanical seal assembly access hole is formed in the position, corresponding to the first mechanical seal assembly, of the bracket flange.
4. A side entry agitator for use on a bio-fermentor in accordance with claim 1, characterized by: a support ring is installed in the sealing shaft sleeve, an oil passing hole is formed in the support ring along the axial direction, and the support ring is fixedly installed on the stirring shaft.
5. A side entry agitator for use on a bio-fermentor in accordance with claim 1, characterized by: and a spiral pressurizing groove which is consistent with the rotation direction of the stirring shaft is arranged on the transmission shaft at the blocking sleeve section of the bearing box.
6. A side entry agitator for use on a bio-fermentor in accordance with claim 1, characterized by: the stirring shaft is of a split structure and comprises a power connecting shaft, a middle spline shaft and a power output shaft; one end of the power connecting shaft is connected with the power shaft; the other end of the power connecting shaft is connected with one end of a spline shaft of the intermediate shaft through a spline; the other end of the middle spline shaft is connected with one end of the power output shaft through a spline, and the other end of the power output shaft is provided with a blade assembly through a bearing box assembly in a stirring manner.
7. A side entry agitator for use on a bio-fermentor in accordance with claim 6, characterized by: an online maintenance sealing ring is arranged on the stirring shaft at the inner side of the bracket flange; and a sealing ring is embedded on the sealing matching surface of the online maintenance sealing ring or the tank body sealing flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020577376.XU CN212999405U (en) | 2020-04-17 | 2020-04-17 | Side-feeding stirrer for biological fermentation tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020577376.XU CN212999405U (en) | 2020-04-17 | 2020-04-17 | Side-feeding stirrer for biological fermentation tank |
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| Publication Number | Publication Date |
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| CN212999405U true CN212999405U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020577376.XU Active CN212999405U (en) | 2020-04-17 | 2020-04-17 | Side-feeding stirrer for biological fermentation tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228255A (en) * | 2022-08-04 | 2022-10-25 | 安徽雨辰机电制造有限公司 | Side-feeding type stirrer sealing device |
-
2020
- 2020-04-17 CN CN202020577376.XU patent/CN212999405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228255A (en) * | 2022-08-04 | 2022-10-25 | 安徽雨辰机电制造有限公司 | Side-feeding type stirrer sealing device |
| CN115228255B (en) * | 2022-08-04 | 2023-09-15 | 安徽雨辰机电制造有限公司 | Side-entering stirrer sealing device |
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