CN214811774U

CN214811774U - Scraper component with bidirectional sealing mechanism for centrifuge

Info

Publication number: CN214811774U
Application number: CN202121481671.6U
Authority: CN
Inventors: 胡振华
Original assignee: ZHANGJIAGANG ZHONGNAN CHEMICAL MACHINERY CO LTD
Current assignee: ZHANGJIAGANG ZHONGNAN CHEMICAL MACHINERY CO LTD
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2021-11-23
Anticipated expiration: 2031-07-01

Abstract

The utility model relates to the technical field of centrifuges, in particular to a scraper component for a centrifuger with a bidirectional sealing mechanism, which comprises a top cover, a scraper component, a sealing mechanism, a scraper, a motor, a worm and a worm wheel, the bottom end of the connecting seat is fixed with a sealing seat through a bolt, the sealing seat is sleeved on the knife tube, the bottom of the sealing seat is provided with a sealing mechanism which comprises a sleeve seat, the sleeve seat is sleeved on the knife pipe and is fixedly connected with the sealing seat through a bolt, a sealing sleeve is embedded in the sleeve seat, double-sealing scrapers are embedded at the upper end and the lower end of the sealing sleeve, an annular through groove is arranged on the inner wall of the sealing sleeve close to the upper part of the double-sealing scraper, an air inlet elbow is fixed on the outer surface of the sleeve seat, and the inner cavity of the air inlet elbow is communicated with the inner cavity of the annular through groove, the lifting mechanism comprises a sleeve, and a piston block is fixed at the bottom end of the sleeve through a bolt. The utility model discloses rotary motion and elevating movement's two-way seal can be guaranteed simultaneously.

Description

Scraper component with bidirectional sealing mechanism for centrifuge

Technical Field

The utility model relates to a centrifuge technical field specifically is a scraper subassembly for centrifuge with two-way sealing mechanism.

Background

When the clean scraper down-discharge centrifuge works, materials are influenced by centrifugal force and can be attached to a rotary drum, and filter cakes after solid-liquid separation can be discharged by installing the scraper component on the top cover of the centrifuge.

When the scraper component works, in order to improve the scraping range, the scraper needs to ascend and descend, the sealing performance of the lifting part is particularly important, the sealing performance of the lifting structure can be kept by the existing scraper component, but the sealing performance can be influenced if the scraper is rotated, and the two-way sealing of the rotating motion and the lifting motion cannot be guaranteed at the same time.

Therefore, it is desirable to design a scraper assembly for a centrifuge having a bidirectional sealing mechanism to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a scraper subassembly for centrifuge with two-way sealing mechanism to the problem of the two-way sealing who can't guarantee rotary motion and elevating movement simultaneously who proposes in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a scraper component with a bidirectional sealing mechanism for a centrifuge comprises a top cover, a scraper component, a sealing mechanism, a scraper, a motor, a worm and a worm wheel, wherein the scraper component comprises a connecting seat, the connecting seat is fixed on the top cover, a supporting seat is fixed at the top end of the connecting seat through a bolt, a shell is fixed at the top end of the supporting seat through a bolt, a cutter tube is movably connected inside the shell, the bottom end of the cutter tube is fixedly provided with the scraper through a bolt, a lifting mechanism is movably connected inside the cutter tube, a sealing cover is fixed at the top end of the shell through a bolt, a sealing seat is fixed at the bottom end of the connecting seat through a bolt, the sealing seat is sleeved on the cutter tube, the sealing mechanism is arranged at the bottom of the sealing seat, the sealing mechanism comprises a sleeve seat, the sleeve seat is sleeved on the cutter tube and is fixedly connected with the sealing seat through a bolt, and a sealing sleeve is embedded inside the sleeve seat, the upper and lower both ends of seal cover all embedded have dual seal scraper blade, the annular logical groove has been seted up to the inner wall of seal cover near the top of lower extreme dual seal scraper blade, the surface mounting of cover seat has the elbow that admits air, and the inner chamber of elbow that admits air communicates with the inner chamber that the annular led to the groove, elevating system includes the sleeve pipe, the sheathed tube bottom is passed through the bolt fastening and is had the piston piece.

Preferably, the outer surface of the cutter tube is sleeved with a supporting tube, the top end of the supporting tube is rotatably connected with the sealing cover through a bearing, the bottom end of the supporting tube is rotatably connected with the connecting seat through a bearing, a worm wheel is sleeved at the bottom of the supporting tube, the motor is fixed on the supporting seat through a bolt, the output end of the motor is fixed with a worm, and the worm is meshed with the worm wheel.

Preferably, the outer surfaces of two sides of the supporting tube are provided with guide grooves, the top end of the cutter tube is inserted with a plug, the top end of the plug is fixedly provided with a sealing cover through a bolt, the sleeve sequentially penetrates through the sealing cover and the plug and is movably connected with the sealing cover and the plug, two sides of the plug are fixedly provided with guide blocks through bolts, and the guide blocks are slidably connected with the guide grooves.

Preferably, the inside of end cap is embedded to have the sealing washer, and the inner wall of sealing washer is contradicted with sheathed tube surface, the top of sealed lid is embedded to have sealed cup, the top of sealed cup is loudspeaker form, the tight hoop on the sleeve pipe of the top inner wall of sealed cup.

Preferably, the sheathed tube inside is provided with the center tube, and the upper and lower both ends of center tube all fixed with bushing, the middle part of sleeve pipe and center tube forms the hollow layer, the inner chamber intercommunication of piston piece below is leaned on with the sword pipe to sheathed tube bottom, the through-hole has been seted up to the surface that the sleeve pipe is close to piston piece top, the sword pipe passes through the through-hole and the hollow layer intercommunication by the inner chamber of piston piece top, the top of center tube is fixed with first intake pipe, the sheathed tube top outside is fixed with the second intake pipe, and the inner chamber and the hollow layer intercommunication of second intake pipe.

Preferably, a sealing rubber ring is embedded in the inner wall of the sealing sleeve and hooped on the knife tube.

Compared with the prior art, the beneficial effects of the utility model are that: the scraper component with the bidirectional sealing mechanism for the centrifugal machine can simultaneously ensure the bidirectional sealing of the rotary motion and the lifting motion.

Sealing mechanism is installed through the bottom at the sword pipe, and the double containment scraper blade is all installed at the inner wall both ends of seal cover, leakproofness when guaranteeing rotary motion between sword pipe and the seal cover, and injects inert gas into annular through the elbow that admits air into to the annular logical inslot, is full of between sword pipe and the seal cover through inert gas, further promotes the leakproofness between sword pipe and the sealing mechanism, guarantees elevating movement's leakproofness, reaches the effect of guaranteeing rotary motion and elevating movement's two-way seal simultaneously.

Drawings

FIG. 1 is a front sectional view of the structure of the present invention;

FIG. 2 is a schematic sectional view of a partial front view of the structure of the knife pipe and the lifting mechanism shown in FIG. 1 according to the present invention;

fig. 3 is an enlarged schematic view of the structure at a in fig. 1 according to the present invention;

fig. 4 is an enlarged schematic view of the structure at B in fig. 2 according to the present invention.

In the figure: 1. a top cover; 2. a scraper assembly; 21. a connecting seat; 22. a sealing seat; 23. a knife pipe; 24. a supporting seat; 25. supporting a tube; 26. a housing; 27. a lifting mechanism; 271. a sleeve; 272. a through hole; 273. a central tube; 274. a first intake pipe; 275. a second intake pipe; 276. a piston block; 28. a guide block; 29. sealing the cover; 210. a plug; 211. a sealing cover; 212. a seal ring; 213. sealing the cup; 3. a sealing mechanism; 31. a sleeve seat; 32. sealing sleeves; 33. an annular through groove; 34. a double-seal scraper; 35. sealing the rubber ring; 36. an inlet elbow; 4. a scraper; 5. a motor; 6. a worm; 7. a worm gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides a scraper subassembly for centrifuge with two way seal mechanism, including top cap 1, scraper subassembly 2, sealing mechanism 3, scraper 4, motor 5, worm 6 and worm wheel 7, scraper subassembly 2 includes connecting seat 21, connecting seat 21 is fixed in on top cap 1, there is supporting seat 24 on the top of connecting seat 21 through the bolt fastening, there is shell 26 on the top of supporting seat 24 through the bolt fastening, the inside swing joint of shell 26 has sword pipe 23, there is scraper 4 bottom of sword pipe 23 through the bolt fastening, sword pipe 23 can be in shell 26 elevating movement, thereby drive scraper 4 lift adjustment height, the inside swing joint of sword pipe 23 has elevating system 27, and there is closing cap 29 on the top of shell 26 through the bolt fastening, a top for sealing shell 26.

The bottom end of the connecting seat 21 is fixed with a sealing seat 22 through a bolt, the sealing seat 22 is sleeved on the knife tube 23, the bottom of the sealing seat 22 is provided with a sealing mechanism 3, the sealing mechanism 3 comprises a sleeve seat 31, the sleeve seat 31 is sleeved on the knife tube 23 and is connected and fixed with the sealing seat 22 through a bolt, a sealing sleeve 32 is embedded in the sleeve seat 31, the upper end and the lower end of the sealing sleeve 32 are both embedded with double sealing scrapers 34, an annular through groove 33 is arranged on the inner wall of the sealing sleeve 32 close to the upper part of the lower end double sealing scraper 34, an air inlet elbow 36 is fixed on the outer surface of the sleeve seat 31, the inner cavity of the air inlet elbow 36 is communicated with the inner cavity of the annular through groove 33, the air inlet elbow 36 is used for being externally connected with an inert gas supply tube, the annular through groove 33 can be filled with inert gas such as nitrogen through the air inlet elbow 36, the sealing performance between the knife tube 23 and the sealing mechanism 3 is improved, the directions of the double sealing scrapers 34 and the knife tube 23 are bent, the bending part has inward tension to ensure that the knife pipe 23 can be tightly hooped on the knife pipe, and as shown in fig. 4, the bending directions of the double-sealing scrapers 34 at the upper end and the lower end are opposite, so that the tightness of the knife pipe 23 in the sealing sleeve 32 can be ensured no matter the knife pipe moves up and down or rotates.

The lifting mechanism 27 comprises a sleeve 271, a piston block 276 is fixed at the bottom end of the sleeve 271 through a bolt, and the piston block 276 is sleeved at the bottom of the sleeve 271 and tightly attached to the inner wall of the knife tube 23, so that the sealing performance between the knife tube 23 and the lifting mechanism 27 is ensured.

Further, as shown in fig. 1, the outer surface of the knife pipe 23 is sleeved with a support pipe 25, the top end of the support pipe 25 is rotatably connected with the sealing cover 29 through a bearing, the bottom end of the support pipe 25 is rotatably connected with the connecting seat 21 through a bearing, the bottom of the support pipe 25 is sleeved with a worm wheel 7, the motor 5 is fixed on the supporting seat 24 through a bolt, the output end of the motor 5 is fixed with a worm 6, the worm 6 is meshed with the worm wheel 7, the motor 5 drives the worm 6 to rotate, the worm wheel 7 can be driven to rotate, and therefore the support pipe 25 is driven to rotate.

Further, as shown in fig. 1-2, the outer surfaces of both sides of the supporting tube 25 are both provided with a guide groove, the top end of the knife tube 23 is inserted with a plug 210, the top end of the plug 210 is fixed with a sealing cover 211 through a bolt, a sleeve 271 sequentially penetrates through the sealing cover 211 and the plug 210 and is movably connected with the sealing cover 211 and the plug 210, both sides of the plug 210 are fixed with guide blocks 28 through bolts, the guide blocks 28 are slidably connected with the guide grooves, and the guide blocks 28 play a role in linking the supporting tube 25 and the knife tube 23, so that the supporting tube 25 can drive the knife tube 23 to rotate through the guide blocks 28.

Further, as shown in fig. 2 and 4, a sealing ring 212 is embedded in the plug 210, an inner wall of the sealing ring 212 abuts against an outer surface of the sleeve 271, a sealing cup 213 is embedded in a top end of the sealing cover 211, a top end of the sealing cup 213 is in a horn shape, an inner wall of a top end of the sealing cup 213 is tightly hooped on the sleeve 271, the sealing cup 213 is made of rubber, and the sealing performance between the sleeve 271 and the sealing cover 211 is improved.

Further, as shown in fig. 2, a central tube 273 is disposed inside the casing 271, the upper end and the lower end of the central tube 273 are both fixedly connected to the casing 271, a hollow layer is formed between the casing 271 and the central tube 273, the bottom end of the casing 271 is communicated with the inner cavity of the knife tube 23 below the piston block 276, a through hole 272 is formed on the outer surface of the casing 271 above the piston block 276, the inner cavity of the knife tube 23 above the piston block 276 is communicated with the hollow layer through the through hole 272, a first air inlet tube 274 is fixed at the top end of the central tube 273, a second air inlet tube 275 is fixed at the outer side of the top end of the casing 271, and the inner cavity of the second air inlet pipe 275 is communicated with the hollow layer, the first air inlet pipe 274 is used for introducing air into the cutter pipe 23 through the central pipe 273, the bottom of the cutter pipe 23 is pushed to enable the cutter pipe 23 to descend, the second air inlet pipe 275 is used for introducing air into the cutter pipe 23 through the through hole 272, and the top of the cutter pipe 23 is pushed to enable the cutter pipe 23 to ascend.

Further, as shown in fig. 3, a sealing rubber ring 35 is embedded in the inner wall of the sealing sleeve 32, the sealing rubber ring 35 is hooped on the knife tube 23, the sealing rubber ring 35 is made of rubber, and the sealing performance of the knife tube 23 in the rotating process in the sealing sleeve 32 is improved.

The working principle is as follows: when the scraper 4 is used, the first air inlet pipe 274, the second air inlet pipe 275 and the air inlet elbow 36 are connected with an external air pipe respectively, when the scraper 4 needs to descend, air only needs to be supplied to the first air inlet pipe 274, and the air is guided into the cutter pipe 23 through the central pipe 273, so that the bottom of the cutter pipe 23 is pushed to descend the cutter pipe 23, and the scraper 4 is driven to descend.

When the scraper 4 needs to be lifted, only the second air inlet pipe 275 needs to be supplied with air, the air enters the knife tube 23 through the through hole 272, the top of the knife tube 23 is pushed to lift the knife tube 23, and therefore the scraper 4 is driven to lift.

The inert gas is injected into the annular through groove 33 through the air inlet elbow 36, the space between the knife pipe 23 and the sealing sleeve 32 is filled with the inert gas, and the sealing performance between the knife pipe 23 and the sealing mechanism 3 is improved, so that the novel knife pipe sealing device is practical.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a scraper subassembly for centrifuge with two way seal mechanism, includes top cap (1), scraper subassembly (2), sealing mechanism (3), scraper (4), motor (5), worm (6) and worm wheel (7), scraper subassembly (2) are including connecting seat (21), on connecting seat (21) are fixed in top cap (1), there is supporting seat (24) on the top of connecting seat (21) through the bolt fastening, there is shell (26) on the top of supporting seat (24) through the bolt fastening, the inside swing joint of shell (26) has sword pipe (23), the bottom of sword pipe (23) has scraper (4) through the bolt fastening, the inside swing joint of sword pipe (23) has elevating system (27), and the top of shell (26) has closing cap (29) through the bolt fastening, its characterized in that: the bottom end of the connecting seat (21) is fixed with a sealing seat (22) through a bolt, the sealing seat (22) is sleeved on the knife pipe (23), the bottom of the sealing seat (22) is provided with a sealing mechanism (3), the sealing mechanism (3) comprises a sleeve seat (31), the sleeve seat (31) is sleeved on the knife pipe (23) and is fixedly connected with the sealing seat (22) through a bolt, a sealing sleeve (32) is embedded in the sleeve seat (31), double-sealing scrapers (34) are embedded in the upper end and the lower end of the sealing sleeve (32), an annular through groove (33) is formed in the inner wall of the sealing sleeve (32) close to the upper portion of the lower-end double-sealing scraper (34), an air inlet elbow (36) is fixed on the outer surface of the sleeve seat (31), the inner cavity of the air inlet elbow (36) is communicated with the inner cavity of the annular through groove (33), and the lifting mechanism (27) comprises a sleeve (271), the bottom end of the sleeve (271) is fixed with a piston block (276) through a bolt.

2. The scraper component with the bidirectional sealing mechanism for the centrifugal machine according to claim 1, wherein: the utility model discloses a motor, including sword pipe (23), closing cap (29), connecting seat (21), worm wheel (7) have been cup jointed to the bottom of stay tube (25), the surface cover of sword pipe (23) is equipped with stay tube (25), and the top of stay tube (25) is passed through the bearing and is connected with closing cap (29) rotation, the bottom of stay tube (25) is passed through the bearing and is connected with connecting seat (21) rotation, motor (5) are fixed in on supporting seat (24) through the bolt, and the output of motor (5) is fixed with worm (6), worm (6) and worm wheel (7) meshing.

3. The scraper component with the bidirectional sealing mechanism for the centrifugal machine according to claim 2, wherein: the utility model discloses a cutter tube, including the support tube (25), the both sides surface of support tube (25) all seted up the guide slot, the top of cutter tube (23) is inserted and is equipped with end cap (210), the top of end cap (210) is through the bolt fastening has sealed lid (211), sleeve pipe (271) run through sealed lid (211) and end cap (210) in proper order and with sealed lid (211) and end cap (210) swing joint, the both sides of end cap (210) all are through the bolt fastening have guide block (28), and guide block (28) and guide slot sliding connection.

4. The scraper component with the bidirectional sealing mechanism for the centrifugal machine according to claim 3, wherein: the inside of end cap (210) is embedded to have sealing washer (212), and the inner wall of sealing washer (212) contradicts with the surface of sleeve pipe (271), the top of sealed lid (211) is embedded to have sealed cup (213), the top of sealed cup (213) is the loudspeaker form, the tight hoop on sleeve pipe (271) of top inner wall of sealed cup (213).

5. The scraper component with the bidirectional sealing mechanism for the centrifugal machine according to claim 1, wherein: the inside of sleeve pipe (271) is provided with center tube (273), and the upper and lower both ends of center tube (273) all are connected fixedly with sleeve pipe (271), the middle part of sleeve pipe (271) and center tube (273) forms the hollow layer, the bottom of sleeve pipe (271) and sword pipe (23) are leaned on the inner chamber intercommunication of piston piece (276) below, through-hole (272) have been seted up to the surface that sleeve pipe (271) are close to piston piece (276) top, sword pipe (23) are leaned on the inner chamber of piston piece (276) top and are passed through-hole (272) and hollow layer intercommunication, the top of center tube (273) is fixed with first intake pipe (274), the top outside of sleeve pipe (271) is fixed with second intake pipe (275), and the inner chamber and the hollow layer intercommunication of second intake pipe (275).

6. The scraper component with the bidirectional sealing mechanism for the centrifugal machine according to claim 1, wherein: the inner wall of the sealing sleeve (32) is embedded with a sealing rubber ring (35), and the sealing rubber ring (35) is hooped on the knife tube (23).