CN215325749U - Sealing structure for material conveying device - Google Patents

Abstract

The utility model discloses a sealing structure for a material conveying device, which comprises a screw conveyor, a feeder, a connecting pipeline, a storage bin, a first sealing pipe, a second sealing pipe and a scraping plate, wherein the feeder is installed on the screw conveyor, the storage bin is arranged on one side of the screw conveyor, the screw conveyor comprises a screw shaft, a screw conveying pipe, a screw conveyor motor and a screw blade, the output end of the screw conveyor motor is fixedly connected with one end of a first coupling, the screw blade is installed on the screw shaft, the inner end of the screw shaft penetrates through a bearing assembly seat shell cover, a bearing assembly seat, a shaft seal, a bearing and a limiting pre-tightening nut to be matched and connected with the first coupling, the inlet end of the screw conveying pipe is communicated with the bottom of the feeder, and the tail end of the screw conveying pipe is connected with a connecting pipe. The spiral conveying pipe and the connecting pipe are convenient to install, and the problem of poor sealing performance is solved through the meshed structural design.

Description

Sealing structure for material conveying device

Technical Field

The utility model relates to the technical field of conveying devices, in particular to a sealing structure for a material conveying device.

Background

The mechanical sealing element technology is widely applied to the fields of national defense, electric power, chemical industry, petroleum, metallurgy, transportation, medicine, food, cosmetics and the like. The conveying device at the present stage has poor sealing performance, the conveying pipeline is not firmly connected and fixed, the fixing structure is complex, the assembly and disassembly are inconvenient, the installation efficiency is low, and the leakage problem in the conveying process in the industrial application of medicines, foods, cosmetics and the like cannot be solved. In view of the above disadvantages, it is necessary to design a sealing structure for a material conveying device.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a sealing structure for a material conveying device, which solves the problems set forth in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a sealing structure for a material conveying device comprises a screw conveyor, a feeder, a connecting pipeline, a storage bin, a first sealing pipe, a second sealing pipe and a scraping plate, wherein the feeder is installed on the screw conveyor, the storage bin is arranged on one side of the screw conveyor, the screw conveyor comprises a screw shaft, a screw conveying pipe, a screw conveyor motor and screw blades, the screw conveyor motor is fixed on a support through bolts, the support is fixed on a mounting block, the mounting block is fixed on the screw conveying pipe, the output end of the screw conveyor motor is fixedly connected with one end of a first coupling, the screw shaft is arranged in the screw conveying pipe, the screw blades are installed on the screw shaft, the inner end of the screw shaft penetrates through a bearing assembly seat shell cover, a bearing assembly seat, a shaft seal, a bearing and a limiting pre-tightening nut to be matched and connected with the first coupling, the inlet end of the screw conveying pipe is communicated with the bottom of the feeder, the tail end of spiral delivery pipe is connected with the connecting pipe, and the connecting pipe is hollow structure, and the discharge gate pipeline upper portion of connecting pipe is passed through rings and is connected with the thrust plate, and accessible rings rotate along the pipeline is radial.

Preferably, the bearing assembly seat is installed on the fixed seat, the fixed seat is installed at one end of the spiral conveying pipe, and the inner surface of the bearing assembly seat is connected with the shaft seal and the bearing in a matched mode.

Preferably, the bearing component seat shell cover and the bearing component seat are made of polytetrafluoroethylene materials with extremely strong corrosion resistance and wear resistance, the outer surface of the bearing component seat is matched and connected with the bearing component seat shell cover, and the bearing component seat shell cover is fixedly connected with the screw shaft through an inner hexagonal screw.

Preferably, the outer surface of the bearing component seat is provided with a first groove, the inner surface of the bearing component seat is provided with a second groove, and three overflow small holes communicated with the first groove and the second groove are formed below the bearing component seat.

Preferably, the connecting pipe runs through to the inside of storage silo, install thrust cylinder on the storage silo, thrust cylinder and the pipeline terminal surface fixed connection of storage silo.

Preferably, a scraping plate is installed in a shell of the feeder and fixed at one end of a scraping plate main shaft, the other end of the scraping plate main shaft penetrates through a spiral conveying pipe to be connected with one end of a second coupling, the other end of the second coupling is fixedly connected with an output end of a scraping plate motor, and a sealing plate is arranged between the spiral conveying pipe and the second coupling.

Preferably, a first sealing pipe is fixedly sleeved on the spiral conveying pipe, an annular plate is arranged on the upper surface of the first sealing pipe, a first annular groove is formed in the lower surface of the first sealing pipe along a circle, and internal threads are formed in the inner side surface of the first annular groove.

Preferably, a sealing rubber gasket is arranged on the lower end face of the connecting pipe, a second sealing pipe is fixedly sleeved on the side surface of the connecting pipe, a second annular groove matched with the first annular groove in shape is formed in the upper surface of the second sealing pipe, a short sealing pipe is arranged on the lower surface of the second sealing pipe, and external threads are arranged on the outer side surface of the short sealing pipe.

Preferably, the second annular groove is embedded with a J-shaped fixed connecting rod, the lower end of the vertical portion of the J-shaped fixed connecting rod is provided with a connecting thread, the vertical portion of the J-shaped fixed connecting rod is sleeved with an L-shaped fixed rod, the L-shaped fixed rod is provided with a sliding hole, the sliding hole is sleeved on the J-shaped fixed connecting rod, and the connecting thread is sleeved with a nut.

Compared with the prior art, the sealing structure for the material conveying device is characterized in that the tail end of the discharge port of the connecting pipe is provided with the thrust plate, the thrust cylinder is additionally arranged outside the thrust plate to exert a certain pre-tightening force on the thrust plate, and the extrusion acting force of the powdery material on the thrust plate in the initial stacking stage of the discharge port is smaller than the pre-tightening force exerted on the thrust plate by the thrust cylinder, so that the more the materials are stacked at the discharge port of the connecting pipe, the more the materials are extruded, and the more the materials are extruded and compacted, and the sealing property is better; the spiral conveying pipe and the connecting pipe are convenient to install, and the problem of poor sealing performance is solved through the meshed structural design; the utility model arranges the shaft seal at the left end of the bearing assembly, the shaft seal can completely block the solution, and meanwhile, the bearing assembly adopts a stainless steel double-seal bearing with waterproof seal rings at two sides, and the bearing assembly also has excellent sealing effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model without limiting the utility model in which:

FIG. 1 is a schematic structural view of a sealing structure for a material conveying device according to the present invention;

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

FIG. 3 is a schematic view of the structure at B in FIG. 1;

FIG. 4 is a cross-sectional view of a bearing assembly seat in a seal arrangement for a material handling device according to the present invention.

In the drawings:

1. a screw shaft; 2. a feeder; 3. a fixed seat; 4. a spiral conveying pipe; 5. shaft sealing; 6. a bearing; 7. a bearing assembly mount; 8. a limiting pre-tightening nut; 9. a first coupler; 10. a support; 11. a screw conveyor motor; 12. a bearing assembly mount housing cover; 13. a bolt; 14. a first groove; 15. a second groove; 16. Overflow small holes; 17. a connecting pipe; 18. a thrust plate; 19. a storage bin; 20. a thrust cylinder; 21. a hoisting ring; 22. a sealing plate; 23. a first sealing pipe; 24. an annular plate; 25. an internal thread; 26. a first annular groove; 27. a second sealing pipe; 28. a second annular groove; 29. sealing the short pipe; 30. an external thread; 31. j-shaped fixed connecting rods; 32. connecting threads; 33. an L-shaped fixing rod; 34. a slide hole; 35. a nut; 36. sealing the rubber gasket; 37. a scraper motor; 38. a second coupler; 39. a scraping plate main shaft; 40. a scraping plate; 41. A helical blade; 42. and (7) installing the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a seal structure for material conveying device, includes auger delivery ware, feeder 2, connecting pipe 17, storage silo 19, sealed tube 23, sealed tube two 27 and scrapes flitch 40, install feeder 2 on the auger delivery ware, one side of auger delivery ware is provided with storage silo 19, the auger delivery ware includes screw axis 1, auger delivery pipe 4, auger delivery ware motor 11 and helical blade 41, auger delivery ware motor 11 passes through bolt 13 to be fixed on support 10, and support 10 is fixed on mounting block 42, and mounting block 42 is fixed on auger delivery pipe 4, the output of auger delivery ware motor 11 and the one end fixed connection of shaft coupling 9, screw axis 1 set up in auger delivery pipe 4, install helical blade 41 on screw axis 1, screw axis 1 inner passes bearing assembly seat housing cover 12, bearing assembly seat 7, The shaft seal 5, the bearing 6 and the limiting pre-tightening nut 8 are in matched connection with the first coupler 9, and except for the fact that the limiting pre-tightening nut 8 is in threaded fit with the screw shaft 1, the rest parts are in interference fit; the bearing assembly seat 7 is arranged on the fixed seat 3, the fixed seat 3 is arranged at one end of the spiral conveying pipe 4, the inner surface of the bearing assembly seat 7 is connected with the shaft seal 5 and the bearing 6 in a matching way, the bearing assembly seat shell cover 12 and the bearing assembly seat 7 are both made of PTFE materials with extremely strong corrosion resistance and wear resistance, the outer surface of the bearing assembly seat 7 is connected with the bearing assembly seat shell cover 12 in a matching way, and the bearing assembly seat shell cover 12 is fixedly connected with the spiral shaft 1 through an inner hexagonal screw; the outer surface of the bearing component seat 7 is provided with a first groove 14, the inner surface of the bearing component seat 7 is provided with a second groove 15, and three overflow small holes 16 communicated with the first groove 14 and the second groove 15 are formed below the bearing component seat 7.

The inlet end of the spiral conveying pipe 4 is communicated with the bottom of the feeder 2, the tail end of the spiral conveying pipe 4 is connected with a connecting pipe 17, the connecting pipe 17 is of a hollow structure, the upper part of a discharge port pipeline of the connecting pipe 17 is connected with a thrust plate 18 through a hanging ring 21, and the upper part of the discharge port pipeline can rotate along the radial direction of the pipeline through the hanging ring 21; the connecting pipe 17 runs through to the inside of storage silo 19, install thrust cylinder 20 on the storage silo 19, thrust cylinder 20 and the pipeline terminal surface fixed connection of storage silo 19 can exert the pretightning force to the thrust plate, install scraping plate 40 in the casing of feeder 2, scraping plate 40 and fixing in the one end of scraping plate main shaft 39, the other end of scraping plate main shaft 39 passes spiral delivery pipe 4 and is connected with the one end of second shaft coupling 38, the other end of second shaft coupling 38 and the output fixed connection of scraping plate motor 37, be provided with sealing plate 22 between spiral delivery pipe 4 and the second shaft coupling 38.

The spiral conveying pipe 4 is fixedly sleeved with a first sealing pipe 23, the upper surface of the first sealing pipe 23 is provided with an annular plate 24, the lower surface of the first sealing pipe 23 is provided with a first annular groove 26 along a circle, the inner side surface of the first annular groove 26 is provided with an internal thread 25, the side surface of the connecting pipe 17 is fixedly sleeved with a second sealing pipe 27, the upper surface of the second sealing pipe 27 is provided with a second annular groove 28 matched with the first annular groove 26 in shape, the lower surface of the second sealing pipe 27 is provided with a short sealing pipe 29, the outer side surface of the short sealing pipe 29 is provided with an external thread 30, the second annular groove 28 is embedded with a J-shaped fixed connecting rod 31, the lower end of the vertical part of the J-shaped fixed connecting rod 31 is provided with a connecting thread 32, the vertical part of the J-shaped fixed connecting rod 31 is sleeved with an L-shaped fixing rod 33, the L-shaped fixing rod 33 is provided with a sliding hole 34, and the sliding hole 34 is sleeved on the J-shaped fixed connecting rod 31, the connecting thread 32 is sleeved with a nut 35; a sealing rubber gasket 36 is arranged on the lower end face of the connecting pipe 17; the external thread 30 is meshed with the internal thread 25; the vertical part of the L-shaped fixing rod 33 is inserted into the first annular groove 26. During installation, insert spiral duct 4 on the sealed nozzle stub 29 of connecting pipe 17 department, rotatory connecting pipe 17 makes its fixed seal through the meshing of external screw thread 30 with internal thread 25, insert the couple part of J style of calligraphy fixed link 31 in ring channel two 28, vertical one end is inserted in the sliding hole 34 of L style of calligraphy dead lever 33, insert L style of calligraphy dead lever one end in ring channel 26, revolve wrong nut 35, promote L style of calligraphy dead lever 33 and move upward and realize pressing from both sides tightly, thereby make things convenient for spiral duct 4 and connecting pipe 17's installation, and through the structural design of meshing, the relatively poor problem of leakproofness has been solved.

The working principle of the utility model is as follows: powdery materials are poured into the feeder 2, the screw shaft 1 is driven to rotate by the power provided by the screw conveyor motor 11, the bearing assembly seat shell cover 12, the inner ring of the bearing assembly seat 7, the limiting pre-tightening nut 8 and the coupler 9 rotate along with the screw shaft 1, the powdery materials and water in the air combine to form a small amount of solution, the solution enters from the gap between the bearing assembly seat shell cover 12 and the bearing assembly seat 7 and enters the first groove 14 arranged on the outer surface of the bearing assembly seat 7, and the solution flows back to the spiral conveying pipe 4 from the gap between the lower bearing assembly seat shell cover 12 and the bearing assembly seat 7. If the first groove 14 arranged on the outer surface of the bearing component seat 7 has problems, the solution continues to enter the inside of the bearing component seat 7 from the matching gap between the bearing component seat 7 and the screw shaft 1, the solution enters the second groove 15 arranged on the inner surface of the bearing component seat 7, and the liquid flows back to the screw conveying pipe 4 from the three overflow small holes 16 at the bottom. If the three overflow apertures 16 in the bottom of the bearing assembly seat 7 become blocked, solution will continue to enter the shaft seal 5 and the shaft seal 5 is fully capable of blocking the solution from continuing into the bearing 6. Even if the shaft seal 5 is worn, the solution continuously enters the bearing 6, firstly contacts with a bearing sealing ring, and then enters the bearing, because the bearing is made of stainless steel, the corrosion resistance is good, and the bearing can be scrapped after lasting for more than half a year.

According to the utility model, the thrust plate 18 is arranged at the tail end of the discharge port of the connecting pipe 17, the thrust cylinder 20 is additionally arranged outside the thrust plate 18, a certain pretightening force is applied to the thrust plate 18, the extrusion acting force of the powdery material on the thrust plate 18 in the initial stacking stage of the discharge port is smaller than the pretightening force applied to the thrust plate 18 by the thrust cylinder 20, so that the more the material is stacked at the discharge port of the connecting pipe 17, the more the material is squeezed, and the better the sealing property is. When the powdery material is accumulated to a certain degree, the extrusion force of the powdery material to the thrust plate 18 is greater than the pretightening force applied to the thrust plate 18 by the thrust cylinder 20, the thrust plate 18 is pushed away, and the powdery material enters the storage bin 19 along the discharge hole of the connecting pipe 17.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. A seal structure for material conveying equipment which characterized in that: comprises a screw conveyor, a feeder (2), a connecting pipe (17), a storage bin (19), a first sealing pipe (23), a second sealing pipe (27) and a scraping plate (40), wherein the feeder (2) is installed on the screw conveyor, the storage bin (19) is arranged on one side of the screw conveyor, the screw conveyor comprises a screw shaft (1), a screw conveying pipe (4), a screw conveyor motor (11) and screw blades (41), the screw conveyor motor (11) is fixed on a support (10) through bolts (13), the support (10) is fixed on an installation block (42), the installation block (42) is fixed on the screw conveying pipe (4), the output end of the screw conveyor motor (11) is fixedly connected with one end of a first coupling (9), the screw shaft (1) is arranged in the screw conveying pipe (4), and the screw blades (41) are installed on the screw shaft (1), the inner end of the spiral shaft (1) penetrates through a bearing assembly seat shell cover (12), a bearing assembly seat (7), a shaft seal (5), a bearing (6) and a limiting pre-tightening nut (8) to be matched and connected with a first coupler (9), the inlet end of the spiral conveying pipe (4) is communicated with the bottom of the feeder (2), the tail end of the spiral conveying pipe (4) is connected with a connecting pipe (17), the connecting pipe (17) is of a hollow structure, the upper part of a discharge port pipeline of the connecting pipe (17) is connected with a thrust plate (18) through a hanging ring (21), and the upper part of the discharge port pipeline can rotate radially along the pipeline through the hanging ring (21).

2. A seal structure for a material conveying apparatus according to claim 1, wherein: the bearing assembly seat (7) is installed on the fixed seat (3), the fixed seat (3) is installed at one end of the spiral conveying pipe (4), and the inner surface of the bearing assembly seat (7) is connected with the shaft seal (5) and the bearing (6) in a matched mode.

3. A seal structure for a material conveying apparatus according to claim 1, wherein: bearing component seat shell cover (12), bearing component seat (7) all adopt anticorrosive nature and the all extremely strong tetrafluoro material of wearability to make, and the surface and the bearing component seat shell cover (12) cooperation of bearing component seat (7) are connected, and bearing component seat shell cover (12) are through hexagon socket head cap screw and screw axis (1) fixed connection.

4. A seal structure for a material conveying apparatus according to claim 1, wherein: the outer surface of the bearing component seat (7) is provided with a first groove (14), the inner surface of the bearing component seat (7) is provided with a second groove (15), and three overflow small holes (16) communicated with the first groove (14) and the second groove (15) are formed below the bearing component seat (7).

5. A seal structure for a material conveying apparatus according to claim 1, wherein: the connecting pipe (17) runs through to the inside of storage silo (19), install thrust cylinder (20) on storage silo (19), thrust cylinder (20) and the pipeline terminal surface fixed connection of storage silo (19).

6. A seal structure for a material conveying apparatus according to claim 1, wherein: a scraping plate (40) is installed in a shell of the feeder (2), the scraping plate (40) is fixed at one end of a scraping plate main shaft (39), the other end of the scraping plate main shaft (39) penetrates through a spiral conveying pipe (4) to be connected with one end of a second coupling (38), the other end of the second coupling (38) is fixedly connected with an output end of a scraping plate motor (37), and a sealing plate (22) is arranged between the spiral conveying pipe (4) and the second coupling (38).

7. A seal structure for a material conveying apparatus according to claim 1, wherein: the spiral conveying pipe (4) is fixedly sleeved with a first sealing pipe (23), an annular plate (24) is arranged on the upper surface of the first sealing pipe (23), a first annular groove (26) is formed in the lower surface of the first sealing pipe (23) along a circle, and an internal thread (25) is arranged on the inner side surface of the first annular groove (26).

8. A seal structure for a material conveying apparatus according to claim 1, wherein: the sealing rubber gasket (36) is arranged on the lower end face of the connecting pipe (17), a second sealing pipe (27) is fixedly sleeved on the side surface of the connecting pipe (17), a second annular groove (28) matched with the first annular groove (26) in shape is formed in the upper surface of the second sealing pipe (27), a sealing short pipe (29) is arranged on the lower surface of the second sealing pipe (27), and an external thread (30) is arranged on the outer side surface of the sealing short pipe (29).

9. A seal structure for a material conveying apparatus according to claim 8, wherein: the improved nut-type welding machine is characterized in that a J-shaped fixed connecting rod (31) is embedded in the second annular groove (28), connecting threads (32) are arranged at the lower end of the vertical part of the J-shaped fixed connecting rod (31), an L-shaped fixed rod (33) is sleeved on the vertical part of the J-shaped fixed connecting rod (31), sliding holes (34) are formed in the L-shaped fixed rod (33), the J-shaped fixed connecting rod (31) is sleeved with the sliding holes (34), and nuts (35) are sleeved on the connecting threads (32).

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