CN213711861U - Shaft sealing structure and wet-type stirrer - Google Patents

Abstract

The utility model provides a shaft seal structure and wet mixer relates to shaft seal technical field. The shaft sealing structure comprises a box body, a rotating shaft and a sealing assembly, wherein the box body is provided with a pivoting hole, and the rotating shaft is rotatably inserted in the pivoting hole; the sealing assembly comprises a retaining ring and a pressing ring, the retaining ring is fixedly connected to the box body and encloses the pin joint hole, an annular accommodating groove is formed between the retaining ring, the rotating shaft and the box body in an enclosing mode, sealing filler is filled in the annular accommodating groove, the pressing ring is detachably fixedly connected to the box body, and the pressing ring blocks a notch of the annular accommodating groove. The wet-type stirrer comprises a driving piece and the shaft sealing structure, wherein the driving end of the driving piece is fixedly connected with a rotating shaft of the shaft sealing structure. The sealing filler in the shaft sealing structure can play a role in plugging the gap between the rotating shaft and the pin joint hole, so that the sealing property of the box body is improved, the phenomenon that materials in the box body leak outwards through the gap between the rotating shaft and the pin joint hole is reduced, and the pollution to the surrounding environment caused by the leakage of the materials is correspondingly reduced.

Description

Shaft sealing structure and wet-type stirrer

Technical Field

The utility model relates to a shaft seal technical field particularly, relates to a shaft seal structure and wet mixer.

Background

The operation process of a thermal power plant generates a large amount of fly ash, and dry ash is easy to cause dust flying to cause environmental pollution, so a wet-type stirrer is generally installed at the downstream of an ash storehouse, the dry ash in the ash storehouse is humidified and stirred by the wet-type stirrer to obtain wet ash, and then the wet ash is transported to an ash yard.

When the wet mixer is used, dry ash enters through the box inlet of the wet mixer, and is output through the outlet after being sprayed and stirred, because the relative box of the stirring shaft rotates, a certain gap exists between the stirring shaft and the box, the dry ash in the box can flow out through the gap to cause ash leakage, the use performance of the wet mixer is influenced, and the pollution to the surrounding environment can be caused.

That is, the sealing performance of the existing wet mixer is poor, the ash leakage phenomenon is generated, the service performance of the wet mixer is affected, and the surrounding environment is polluted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an axle seal structure and wet mixer to the leakproofness of solving current wet mixer is relatively poor, can produce the ash leakage phenomenon, influences wet mixer's performance, and can cause the technical problem of pollution to the surrounding environment.

In order to solve the problems, the utility model provides a shaft sealing structure, which comprises a box body, a rotating shaft and a sealing assembly, wherein the box body is provided with a pin joint hole, and the rotating shaft is rotatably inserted in the pin joint hole; the sealing assembly comprises a retaining ring and a pressing ring, the retaining ring is fixedly connected with the box body and is enclosed in the pin joint hole, an annular accommodating groove is formed between the retaining ring and the rotating shaft, sealing filler is filled in the annular accommodating groove, the pressing ring is detachably fixedly connected with the box body, and the pressing ring blocks a notch of the annular accommodating groove.

Optionally, the clamping ring comprises a first half ring and a second half ring which are spliced, and the first half ring and the second half ring are fixedly connected with the box body in a detachable mode.

Optionally, first half circle all is equipped with first engaging lug along its length direction's both ends, second half circle all is equipped with the second engaging lug, two along its length direction's both ends first engaging lug and two the detachable rigid coupling of second engaging lug one-to-one.

Optionally, one side of the pressing ring facing the annular accommodating groove is provided with an annular boss along the circumferential direction of the pressing ring, and the annular boss is inserted into the annular accommodating groove.

Optionally, the shaft sealing structure further comprises a connecting piece, wherein the connecting piece comprises a screw rod and a limiting head fixedly connected to one end of the screw rod; the box body is fixedly provided with a connecting seat, the connecting seat is provided with a threaded hole, the pressing ring is provided with a connecting hole, the screw rod penetrates through the connecting hole and is in threaded connection with the threaded hole, and the limiting head is abutted against the end face, deviating from the threaded hole, of the connecting hole.

Optionally, the connecting seat includes a plurality of nuts, and the plurality of nuts are located outside the retaining ring and are arranged at intervals along the circumferential direction of the retaining ring; the connecting holes are multiple, and the connecting holes correspond to the nuts one to one.

Optionally, the connecting seat further includes a fixing boss, the nut is fixedly connected to the outer side of the fixing boss, and an adjusting gap exists between the nut and the box body.

Optionally, the sealing assembly is provided on an outer wall of the tank.

The utility model also provides a wet-type stirrer, which comprises a driving piece and the shaft sealing structure, wherein the driving end of the driving piece is fixedly connected with the rotating shaft of the shaft sealing structure and is used for driving the rotating shaft to rotate; the shaft section of the rotating shaft in the box body of the shaft sealing structure is fixedly connected with a plurality of stirring blades.

Optionally, the wet mixer further comprises a base, and the box body is fixedly arranged on the base; the top surface of base sets firmly first bearing frame and second bearing frame, first bearing is installed to first bearing frame, the second bearing is installed to the second bearing frame, the both ends of axis of rotation all stretch out the box, and wherein one end match peg graft in first bearing, the other end match peg graft in the second bearing.

In the shaft sealing structure provided by the utility model, the rotating shaft is inserted in the pin joint hole of the box body, the baffle ring is surrounded on the pin joint hole and the rotating shaft, and a gap exists between the baffle ring and the rotating shaft, and the gap forms an annular accommodating groove; the annular holding tank intussuseption is filled with sealing filler, and sealing filler carries out the shutoff to the clearance between axis of rotation and the fender ring, plays the shutoff effect to the clearance between axis of rotation and the pin joint hole simultaneously to improve the leakproofness of box, reduce the emergence of the outside condition of spilling of the clearance between axis of rotation and the pin joint hole of material in the box, the corresponding pollution that reduces the material and spill and cause the surrounding environment. The detachable rigid coupling of clamping ring is in the box to carry out the shutoff in the notch department of annular holding tank to gland packing, the clamping ring, keep off the ring, box and axis of rotation can carry on spacingly jointly to all outer walls of gland packing, will gland packing firmly spacing in annular holding tank, thereby ensure gland packing to the effective shutoff in clearance between axis of rotation and the pin joint hole, reduce the emergence of gland packing from the not hard up condition of droing even of notch department of annular holding tank.

The utility model provides a wet mixer adopts above-mentioned axle seal structure, and the sealing filler among the seal assembly can carry out the shutoff to the clearance between axis of rotation and the pin joint hole to effectively reduce the inside dry ash of box and spill the emergence of the condition from this clearance, correspondingly improve wet mixer's performance, and reduce the pollution that dry ash leaks outward and cause the surrounding environment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a first form of a seal assembly for a wet mixer according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a schematic partial cross-sectional view of a second form of a seal assembly for a wet mixer according to the present invention;

FIG. 4 is a partial enlarged view of B in FIG. 3;

fig. 5 is a schematic view of a pressing ring in the shaft sealing structure provided by the present invention;

FIG. 6 is a schematic view of the first half of FIG. 5 from another perspective;

fig. 7 is a schematic view of a baffle ring in the shaft sealing structure provided by the present invention.

Description of reference numerals:

100-a base; 110-a limiting groove; 200-a box body; 210-pivot holes; 220-a connecting seat; 221-a threaded hole; 222-a nut; 223-fixing the boss; 224-adjusting the gap; 300-a rotating shaft; 310-stirring blades; 400-a seal assembly; 410-baffle ring; 411-a first half-ring; 412-a second half-ring; 420-pressing ring; 421-first half turn; 4211-first connecting lug; 422-second half turn; 4221-a second engaging lug; 423-connecting hole; 430-sealing filler; 440-an annular boss; 441-a first boss; 442-a second boss; 450-a connector; 451-screw rod; 452-a limiting head; 500-a driver; 610-a first bearing seat; 620-second bearing seat; 710-a first bearing; 720-second bearing.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present embodiment provides a shaft sealing structure, as shown in fig. 1-4, including a case 200, a rotating shaft 300 and a sealing assembly 400, wherein the case 200 is provided with a pivot hole 210, and the rotating shaft 300 is rotatably inserted into the pivot hole 210; the sealing assembly 400 includes a retaining ring 410 and a pressing ring 420, the retaining ring 410 is fixedly connected to the box 200 and surrounds the pivot hole 210, an annular accommodating groove is formed between the retaining ring 410, the rotating shaft 300 and the box 200, the annular accommodating groove is filled with a sealing filler 430, the pressing ring 420 is detachably and fixedly connected to the box 200, and the pressing ring 420 blocks a notch of the annular accommodating groove.

The shaft sealing structure provided by the embodiment comprises a box body 200 for accommodating materials, a rotating shaft 300 inserted into a pivoting hole 210 of the box body 200 and capable of rotating relative to the box body 200, and a sealing assembly 400 for sealing a gap between the rotating shaft 300 and the pivoting hole 210 so as to improve the connection sealing performance of the rotating shaft 300 and the pivoting hole 210. Initially, the rotating shaft 300 is inserted into the pivot hole 210 of the box 200, the retaining ring 410 surrounds the pivot hole 210 and the rotating shaft 300, and a gap exists between the retaining ring 410 and the rotating shaft 300, the gap forming an annular accommodating groove; the annular accommodating groove is filled with the sealing filler 430, the sealing filler 430 seals a gap between the rotating shaft 300 and the baffle ring 410, and simultaneously seals a gap between the rotating shaft 300 and the pivot hole 210, so that the sealing performance of the box body 200 is improved, the occurrence of the situation that materials in the box body 200 leak outwards through the gap between the rotating shaft 300 and the pivot hole 210 is reduced, and the pollution to the surrounding environment caused by the leakage of the materials is correspondingly reduced. The detachable rigid coupling of clamping ring 420 in box 200 to shutoff in the notch department of annular holding tank to gland packing 430, clamping ring 420, keep off ring 410, box 200 and axis of rotation 300 can be spacing to all outer walls of gland packing 430 jointly, firmly spacing gland packing 430 in the annular holding tank, thereby ensure gland packing 430 to the effective shutoff in clearance between axis of rotation 300 and the pin joint hole 210, reduce the emergence that gland packing 430 is not hard up from the notch department of annular holding tank and even the condition of droing.

When the sealing packing 430 is worn and is not tightly sealed in the gap between the rotating shaft 300 and the pivoting hole 210, the pressing ring 420 can be detached from the box body 200, then the sealing packing 430 is taken out through the notch of the annular accommodating groove, a new sealing packing 430 is reloaded into the annular accommodating groove, and then the pressing ring 420 is installed in the box body 200 to be sealed in the notch of the annular accommodating groove again.

In this embodiment, as shown in fig. 5, the pressing ring 420 may include a first half-ring 421 and a second half-ring 422 that are spliced, and both the first half-ring 421 and the second half-ring 422 are detachably fixed to the box 200. Compared with the annular pressing ring 420, when the pressing ring 420 is disassembled, the pressing ring 420 needs to be sleeved in from one end of the rotating shaft 300, correspondingly, the parts on the rotating shaft 300, the driving part 500 connected with the rotating shaft 300 and the like need to be disassembled, and the operation convenience is poor; the pressing ring 420 is composed of a first half ring 421 and a second half ring 422 which are separately arranged, when the pressing ring 420 is installed, the first half ring 421 and the second half ring 422 can be sleeved in from the side part of the rotating shaft 300 along the radial direction and then are connected with the box body 200, and the first half ring 421 and the second half ring 422 which are installed on the box body 200 can be spliced into the pressing ring 420 sleeved on the rotating shaft 300 to seal the notch of the annular accommodating groove; similarly, when dismantling clamping ring 420, pull down first half 421 and second half 422 from box 200 respectively to it can to take off from the lateral part of axis of rotation 300, then clamping ring 420's dismouting does not have the influence to the part at other positions of axis of rotation 300 in this application, and the convenient degree of dismouting is higher, the convenient degree of use of corresponding improvement axle seal structure.

Alternatively, as shown in fig. 7, the blocking ring 410 may include a first half ring 411 and a second half ring 412 along the circumferential direction thereof, and for the case that the rotating shaft 300 is already installed in the box 200, when the blocking ring 410 is installed, the first half ring 411 and the second half ring 412 may be inserted from the outer side of the rotating shaft 300, and after the positions of the first half ring 411 and the second half ring 412 relative to the rotating shaft 300 and the pivot hole 210 are determined, the first half ring 411 and the second half ring 412 are fixedly connected to the box 200, which does not need to insert the blocking ring 410 from one end of the rotating shaft 300, and accordingly does not affect parts at other positions of the rotating shaft 300, thereby improving the convenience of assembling and disassembling the blocking ring 410. Specifically, the first half ring 411 and the second half ring 412 may be welded to the case 200.

In this embodiment, as shown in fig. 5 and 6, the first half-ring 421 has first connection lugs 4211 at both ends along the length direction thereof, the second half-ring 422 has second connection lugs 4221 at both ends along the length direction thereof, and the two first connection lugs 4211 and the two second connection lugs 4221 are detachably and fixedly connected in a one-to-one correspondence manner. When the clamping ring 420 is installed, install first half circle 421 and second half circle 422 in box 200 back, first half circle 421 and second half circle 422 splice annular clamping ring 420 together, and two first engaging lugs 4211 of first half circle 421 annular end and two second engaging lugs 4221 one-to-one of second half circle 422 annular end, can use bolt etc. to connect corresponding first engaging lug 4211 and second engaging lug 4221, make first half circle 421 and second half circle 422 be connected as an organic wholely, thereby improve clamping ring 420's wholeness, ensure the clamping ring 420 and close the cooperation of the notch of annular holding tank.

In this embodiment, as shown in fig. 5 and 6, an annular boss 440 may be disposed along a circumferential direction of one side of the pressing ring 420 facing the annular receiving groove, and the annular boss 440 is inserted into the annular receiving groove. When the pressing ring 420 is pressed towards the annular accommodating groove, the pressing ring 420 is interfered by the baffle ring 410, and when the pressing ring 420 is abutted against the outer end face of the baffle ring 410, the pressing ring 420 can not move towards the annular accommodating groove any more; the convex annular boss 440 is arranged on one side, facing the annular accommodating groove, of the pressing ring 420, the pressing ring 420 is connected to the box body 200, when the pressing ring 420 is not abutted to the outer end face of the baffle ring 410, the annular boss 440 can be inserted into the annular accommodating groove to extrude the sealing filler 430 in the annular accommodating groove towards the direction of the pivot joint hole 210, and the sealing filler 430 is tightly compacted in the annular accommodating groove to more tightly block the gap between the rotating shaft 300 and the pivot joint hole 210, so that the overall sealing performance of the box body 200 is improved, and the leakage of materials from the gap is reduced. Specifically, when the pressing ring 420 includes the first half-turn 421 and the second half-turn 422, the annular boss 440 may also include a first boss 441 provided to the first half-turn 421 and a second boss 442 provided to the second half-turn 422.

In this embodiment, as shown in fig. 1 and fig. 2, the shaft sealing structure may further include a connector 450, where the connector 450 includes a screw 451 and a limit head 452 fixedly connected to one end of the screw 451; the box body 200 is fixedly provided with a connecting seat 220, the connecting seat 220 is provided with a threaded hole 221, the pressing ring 420 is provided with a connecting hole 423, the screw 451 penetrates through the connecting hole 423 to be in threaded connection with the threaded hole 221, and the limiting head 452 abuts against the end face of the connecting hole 423, which deviates from the threaded hole 221. Here, the pressing ring 420 and the box body 200 are detachably and fixedly connected in a specific form, when the pressing ring 420 is installed, the connecting hole 423 of the pressing ring 420 can be aligned with the threaded hole 221 on the connecting seat 220, and then one end of the screw 451 deviating from the limiting head 452 is screwed into the threaded hole 221 after passing through the connecting hole 423 until the limiting head 452 abuts against the outer side wall of the pressing ring 420; the depth of the screw 451 screwed into the threaded hole 221 can be adjusted, and according to the amount of the sealing filler 430 in the annular accommodating groove, the distance between the pressing ring 420 and the retaining ring 410 is adjusted, so that the length of the annular boss 440 inserted into the annular accommodating groove is correspondingly adjusted, and the annular boss 440 can apply an appropriate force to the sealing filler 430, on the basis of ensuring that the sealing filler 430 seals and seals the gap between the rotating shaft 300 and the pivot hole 210, the situation that the sealing filler 430 is slightly loose due to the extrusion force of the annular boss 440 and has poor sealing performance on the gap between the rotating shaft 300 and the pivot hole 210, or the situation that the sealing filler 430 is large due to the extrusion force of the annular boss 440, so that the friction between the sealing filler 430 and the rotating shaft 300 is large, and the rotation condition of the rotating shaft 300 is affected is reduced. When the pressing ring 420 needs to be disassembled, the screw 451 is screwed outwards, and the pressing ring 420 is convenient to disassemble and assemble. In addition, the connecting seat 220 is arranged on the box body 200, the threaded hole 221 is formed in the connecting seat 220, the pressing ring 420 is connected with the box body 200 through the screwing connection of the screw 451 and the threaded hole 221, in the process, the operation of forming holes and the like on the outer wall of the box body 200 is not needed, accordingly, the sealing performance of the box body 200 cannot be damaged, and the sealing performance of the box body 200 is ensured.

Specifically, the limiting head 452 of the connecting member 450 may be a lock nut screwed to the screw 451 to serve as the limiting head 452; or the connecting member 450 may be a bolt, and the head of the bolt is used as the stopper 452.

In addition to the above-mentioned manner, in this embodiment, as shown in fig. 3 and 4, the connecting seat 220 may include a plurality of nuts 222, and the plurality of nuts 222 are located outside the retaining ring 410 and are arranged at intervals along the circumferential direction of the retaining ring 410; the plurality of connection holes 423 correspond to the plurality of nuts 222 one to one. Here, the connection seat 220 is a specific form, on one hand, a plurality of standard nuts 222 are directly and fixedly connected to the box body 200, and the screw 451 can be screwed with the threaded hole 221 inside the nut 222, so that the connection seat 220 does not need to be separately processed, thereby improving the processing convenience of the sealing assembly 400 and reducing the processing cost thereof; on the other hand, the pressing ring 420 is fixedly connected at different circumferential positions by the connecting pieces 450, so that the firmness and stability of the pressing ring 420 fixedly connected to the box body 200 can be effectively improved, and the pressing effect of the pressing ring 420 and the annular boss 440 on the pressing ring on the sealing filler 430 is correspondingly ensured.

In this embodiment, as shown in fig. 4, the connection seat 220 may further include a fixing boss 223, the nut 222 is fixedly connected to an outer side of the fixing boss 223, and an adjusting gap 224 exists between the nut 222 and the box 200. Here, in a specific form in which the nut 222 is fixedly connected to the box 200, the fixing boss 223 is disposed such that the adjusting gap 224 exists between the nut 222 and the box 200, when the pressing ring 420 is installed, the screw 451 can be screwed into the threaded hole 221 inside the nut 222 and can penetrate through the threaded hole 221 to extend into the adjusting gap 224, that is, the adjusting gap 224 is disposed, on the basis of not lengthening the length of the threaded hole 221, the adjusting distance of the screw 451 with respect to the nut 222 can be increased, and accordingly, the adjusting range of the pressing ring 420 and the annular boss 440 with respect to the annular accommodating groove can be increased, thereby improving the applicability of the shaft sealing structure.

In this embodiment, as shown in fig. 1-4, the sealing assembly 400 may be disposed on an outer wall of the case 200. The baffle ring 410, the pressing ring 420 and the sealing filler 430 of the sealing assembly 400 are all located outside the box body 200, an operator can directly be located outside the box body 200 to perform dismounting operation on the baffle ring 410, the sealing filler 430 and the pressing ring 420, and the operation is convenient and fast. Of course, in other embodiments, the sealing assembly 400 may be disposed on the inner wall of the housing 200.

Optionally, in this embodiment, the sealing assembly 400 may further include a limiting ring, the rotating shaft 300 is provided with a clamping groove along the circumferential direction thereof, the limiting ring is detachably clamped in the clamping groove, and the limiting ring protrudes out of the outer circumferential surface of the rotating shaft 300; the limit ring and the baffle ring 410 are respectively positioned at the inner side and the outer side of the box body 200, an auxiliary sealing ring is sleeved on the shaft section of the rotating shaft 300 between the limit ring and the box body 200, the width of the auxiliary sealing ring corresponds to the distance between the limit ring and the box body 200, and the sealing ring is higher than the gap between the rotating shaft 300 and the pivoting hole 210. The limiting ring and the box body 200 can limit the axial position of the auxiliary sealing ring mounted on the rotating shaft 300 to ensure that the auxiliary sealing ring blocks the gap between the rotating shaft 300 and the pivoting hole 210, and the auxiliary sealing ring and the sealing filler 430 can secondarily block the end gaps at the inner end and the outer end of the pivoting hole 210, so that the sealing performance of the box body 200 is further ensured, and the leakage of materials in the box body 200 is reduced. Specifically, the limiting ring can be a snap spring or the like, and the auxiliary sealing ring can be a felt ring or the like.

The embodiment further provides a wet mixer, as shown in fig. 1 and fig. 3, which includes a driving member 500 and the shaft sealing structure, wherein a driving end of the driving member 500 is fixedly connected to the rotating shaft 300 of the shaft sealing structure, and is used for driving the rotating shaft 300 to rotate; the shaft 300 is fixed with a plurality of stirring blades 310 at the shaft section located in the case 200 of the shaft sealing structure. Here, the shaft sealing structure is a case when the shaft sealing structure is applied to a wet mixer, the wet mixer can be used for humidifying and mixing dry ash, when in use, the dry ash enters the box 200, the driving member 500 drives the rotating shaft 300 to rotate, and the rotating shaft 300 drives the mixing blade 310 to mix the dry ash in the box 200; the sealing packing 430 in the sealing assembly 400 can seal the gap between the rotating shaft 300 and the pivot hole 210, thereby effectively reducing the leakage of dry ash from the gap inside the case 200, correspondingly improving the usability of the wet mixer, and reducing the pollution of the dry ash leakage to the surrounding environment. The pressing ring 420, the baffle ring 410, the box body 200 and the rotating shaft 300 can limit all outer walls of the sealing filler 430 together, and the sealing filler 430 is firmly limited in the annular accommodating groove, so that the sealing filler 430 can effectively seal a gap between the rotating shaft 300 and the pivoting hole 210, and the situation that the sealing filler 430 loosens or even falls off from a notch of the annular accommodating groove is reduced; the pressing ring 420 is detachably and fixedly connected to the box body 200, when the sealing filler 430 is worn, the pressing ring 420 can be detached to replace the sealing filler 430, and the use convenience is high.

In this embodiment, as shown in fig. 1, the wet mixer may further include a base 100, and the box 200 is fixedly disposed on the base 100; the top surface of the base 100 is fixedly provided with a first bearing seat 610 and a second bearing seat 620, the first bearing seat 610 is provided with a first bearing 710, the second bearing seat 620 is provided with a second bearing 720, two ends of the rotating shaft 300 extend out of the box body 200, one end of the rotating shaft is matched and inserted in the first bearing 710, and the other end of the rotating shaft is matched and inserted in the second bearing 720. The first bearing 710 and the second bearing 720 respectively support and limit the rotating shaft 300 at two ends of the rotating shaft, so that the rotating position precision and the rotating stability of the rotating shaft 300 are improved, and the occurrence of shaking during the shifting of the rotating shaft 300 or the rotating process of the rotating shaft 300 is reduced; in the rotation process of the rotation shaft 300, the rotation resistance applied to the rotation shaft 300 by the first bearing 710 and the second bearing 720 is small, and the smooth rotation of the rotation shaft 300 can be ensured on the basis of supporting and limiting the two ends of the rotation shaft 300.

Specifically, the wet mixer may be a single-shaft mixer or a double-shaft mixer; and when only one end of the rotating shaft 300 extends out of the box body 200, a gap between the rotating shaft 300 and the pivoting hole 210 of the box body 200 can be sealed by using a single sealing assembly 400, and when both ends of the rotating shaft 300 extend out of the box body 200, gaps between the extending parts at both ends of the rotating shaft 300 and the pivoting hole 210 of the box body 200 can be respectively sealed by using two sealing assemblies 400.

Optionally, in this embodiment, as shown in fig. 1, the top surface of the base 100 may be provided with a limiting groove 110, the shape of the limiting groove 110 is matched with that of the box body 200, and the lower portion of the box body 200 can be embedded into the limiting groove 110 in a matching manner, so as to improve the position accuracy and the installation firmness of the box body 200 installed on the base 100; in addition, the arrangement of the limiting groove 110 can make the bottom surface of the box 200 sink relative to the top surface of the base 100, and the rotating shaft 300 descends relative to the top surface of the base 100, so that the first bearing seat 610 is directly arranged on the top surface of the base 100, and the first bearing 710 therein can be matched with the rotating shaft 300 to support the rotating shaft, thereby effectively improving the installation convenience of the first bearing seat 610 and the second bearing seat 620.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The shaft sealing structure is characterized by comprising a box body (200), a rotating shaft (300) and a sealing assembly (400), wherein the box body (200) is provided with a pivoting hole (210), and the rotating shaft (300) is rotatably inserted into the pivoting hole (210); seal assembly (400) is including keeping off ring (410) and clamping ring (420), keep off ring (410) rigid coupling in box (200) just enclose and locate pin joint hole (210), keep off ring (410) axis of rotation (300) with enclose into annular holding tank between box (200), annular holding tank intussuseption is filled with sealing filler (430), the detachable rigid coupling of clamping ring (420) in box (200), just clamping ring (420) shutoff the notch of annular holding tank.

2. The shaft seal structure of claim 1, wherein the pressing ring (420) comprises a first half ring (421) and a second half ring (422) which are spliced, and the first half ring (421) and the second half ring (422) are detachably fixed with the box body (200).

3. The shaft sealing structure according to claim 2, wherein the first half-ring (421) is provided with first connecting lugs (4211) at both ends in the length direction thereof, the second half-ring (422) is provided with second connecting lugs (4221) at both ends in the length direction thereof, and the two first connecting lugs (4211) and the two second connecting lugs (4221) are detachably fixed in a one-to-one correspondence manner.

4. The shaft seal structure according to any one of claims 1 to 3, wherein a side of the pressing ring (420) facing the annular receiving groove is provided with an annular projection (440) along a circumferential direction thereof, and the annular projection (440) is inserted into the annular receiving groove.

5. The shaft seal structure according to any one of claims 1-3, characterized in that the shaft seal structure further comprises a connector (450), the connector (450) comprising a threaded rod (451) and a stopper (452) fixedly connected to one end of the threaded rod (451); the box (200) is fixedly provided with a connecting seat (220), the connecting seat (220) is provided with a threaded hole (221), the pressing ring (420) is provided with a connecting hole (423), the screw (451) penetrates through the connecting hole (423) and is in threaded connection with the threaded hole (221), and the limiting head (452) abuts against the end face, deviating from the threaded hole (221), of the connecting hole (423).

6. The shaft seal structure according to claim 5, characterized in that the connecting seat (220) comprises a plurality of nuts (222), and the plurality of nuts (222) are located outside the baffle ring (410) and are arranged at intervals along the circumferential direction of the baffle ring (410); the number of the connecting holes (423) is multiple, and the connecting holes (423) correspond to the nuts (222) one by one.

7. The shaft sealing structure according to claim 6, wherein the connecting seat (220) further comprises a fixing boss (223), the nut (222) is fixedly connected to the outer side of the fixing boss (223), and an adjusting gap (224) exists between the nut (222) and the box body (200).

8. A shaft sealing arrangement according to any one of claims 1-3, characterised in that the sealing assembly (400) is provided in an outer wall of the housing (200).

9. A wet mixer, comprising a driving member (500) and a shaft sealing structure according to any one of claims 1 to 8, wherein the driving end of the driving member (500) is fixedly connected with a rotating shaft (300) of the shaft sealing structure for driving the rotating shaft (300) to rotate; and a plurality of stirring blades (310) are fixedly connected to the shaft section of the rotating shaft (300) in the box body (200) of the shaft sealing structure.

10. A wet mixer according to claim 9, further comprising a base (100), wherein the housing (200) is fixedly mounted to the base (100); the top surface of base (100) sets firmly first bearing frame (610) and second bearing frame (620), first bearing (710) are installed in first bearing frame (610), second bearing (720) are installed in second bearing frame (620), the both ends of axis of rotation (300) all stretch out box (200), and wherein one end match peg graft in first bearing (710), the other end match peg graft in second bearing (720).

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