Middle support antifriction device of expansion drying machine

Abstract

The utility model discloses a middle support antifriction device of an expansion dryer, which comprises a core shaft, two flow guide mechanisms are sleeved on a shaft body of the core shaft, an antifriction component is further connected with the shaft body of the core shaft, and the antifriction component is arranged between the two flow guide mechanisms. The bushing is in contact with the flow dividing sleeve, so that contact friction between the screw flights of the threaded sleeve and the bushing is avoided, meanwhile, materials enter a gap between the bushing and the flow dividing sleeve, the lubricating effect is achieved, the abrasion degree of the threaded sleeve and the bushing in the middle position is reduced under the dual effects, frequent replacement of spare parts is avoided, and the operation cost of the device is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of synthetic rubber processing equipment, in particular to an intermediate support friction reducing device for an expansion dryer. Background Art

[0002] After the rubber material undergoes polymerization and coagulation processes, it contains a large amount of water outside the rubber and water inside the rubber. The rubber particle water pump pumps the water-containing rubber material to the post-processing workshop. After vibration dehydration or static screening dehydration, a large amount of water outside the rubber is first removed, and then a part of the water outside the rubber and water inside the rubber are squeezed out by the extrusion dehydrator. Then, the expansion dryer uses the expansion principle to remove some of the water outside the rubber and water inside the rubber, and then enters the subsequent supplementary drying link.

[0003] The screw of the expansion dryer is subjected to large axial force and unstable radial force when working. The screw sleeve and bushing in the middle position are seriously worn, and all the front parts need to be disassembled when replacing them, which is quite troublesome. Utility Model Content

[0004] The purpose of the utility model is to provide an intermediate support friction reducing device for an expansion dryer, which can reduce the wear of a screw sleeve in the middle section of a screw.

[0005] The technical solution adopted by the utility model is that the middle support friction reduction device of the expansion dryer includes a core shaft, the shaft body of the core shaft is sleeved with two flow guide mechanisms, the shaft body of the core shaft is also connected to a friction reduction component, and the friction reduction component is arranged between the two flow guide mechanisms.

[0006] The utility model is also characterized in that:

[0007] The flow guiding mechanism comprises a screw sleeve which is sleeved on the shaft body of the core shaft. The sleeve body of the screw sleeve is connected with screw ridges along its circumference. The friction reducing component is arranged between the two screw sleeves.

[0008] The friction reduction component comprises an intermediate support diverter sleeve, which is connected to the shaft body of the core shaft and arranged between two screw sleeves. The outer wall of the intermediate support diverter sleeve is sleeved with an alloy bushing.

[0009] The shaft body of the core shaft is provided with a first key groove, the inner walls of the intermediate supporting diverter sleeve and the screw sleeve are both provided with a second key groove, and a key is connected between the first key groove and the second key groove.

[0010] The inner wall of the middle supporting diversion sleeve is provided with a plurality of diversion grooves along its circumference, and three sides of the inlet of the diversion groove are arranged as inclined surfaces.

[0011] The outer wall of the middle supporting diverter sleeve and the inner wall of the alloy bushing are provided with a hard alloy wear-resistant layer, and a gap is provided between the middle supporting diverter sleeve and the alloy bushing.

[0012] The beneficial effects of the utility model are:

[0013] The utility model discloses an intermediate support friction reduction device for an expansion dryer. The contact between the bushing and the diverter sleeve avoids contact friction between the screw sleeve spiral ridge and the bushing. At the same time, the material enters the gap between the bushing and the diverter sleeve to play a lubricating role. Under the dual action, the wear degree of the screw sleeve and the bushing in the middle position is reduced, the frequent replacement of spare parts is avoided, and the operation cost of the device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an exploded view of the intermediate support friction reduction device of the expansion dryer of the utility model;

[0015] Figure 2 This is a structural diagram of the intermediate support diverter sleeve in the intermediate support friction reduction device of the expansion dryer of the utility model;

[0016] Figure 3 This is a schematic diagram of the material running state in the intermediate support friction reduction device of the expansion dryer of the utility model;

[0017] Figure 4 The utility model is a cross-sectional view of an intermediate support diverter sleeve in an intermediate support friction reduction device of an expansion dryer.

[0018] In the figure: 1. core shaft, 2. screw sleeve, 21. screw fin, 3. intermediate support diverter sleeve, 31. diverter groove, 4. alloy bushing, 5. first keyway, 6. second keyway, 7. key, 8. hard alloy wear-resistant layer. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0020] The utility model provides an expansion dryer intermediate support friction reduction device, such as Figure 1 As shown, the core shaft 1 includes two flow guide mechanisms sleeved on its shaft body. The core shaft 1 is also connected to a friction reduction assembly, which is located between the two flow guide mechanisms. During operation, the core shaft 1 drives the flow guide mechanisms and the friction reduction assembly. Under the action of axial force and unstable radial force, the core shaft 1 bends sideways in the middle. The friction reduction assembly reduces wear on the flow guide mechanisms. During the movement of the core shaft 1, material passes through the friction reduction assembly from one flow guide mechanism and is discharged from the other.

[0021] Example 1

[0022] The middle support friction reduction device of the expansion dryer includes a core shaft 1. The shaft body of the core shaft 1 is sleeved with two flow guide mechanisms. The shaft body of the core shaft 1 is also connected to a friction reduction component, which is arranged between the two flow guide mechanisms.

[0023] The flow-guiding mechanism includes a screw sleeve 2, which is sleeved on the shaft of the core shaft 1. The sleeve 2 is connected to the shaft of the core shaft 1 along its circumference with screw ridges 21. The friction-reducing assembly is arranged between the two screw sleeves 2. The screw sleeve 2 serves as the flow-guiding mechanism. When the core shaft 1 rotates, the screw sleeve 2 is driven to rotate. The screw ridges 21 facilitate the introduction of materials into the friction-reducing assembly and discharge.

[0024] Example 2

[0025] The middle support friction reduction device of the expansion dryer includes a core shaft 1. The shaft body of the core shaft 1 is sleeved with two flow guide mechanisms. The shaft body of the core shaft 1 is also connected to a friction reduction component, which is arranged between the two flow guide mechanisms.

[0026] The flow guiding mechanism includes a screw sleeve 2 , which is sleeved on the shaft body of the core shaft 1 . The sleeve body of the screw sleeve 2 is connected with screw ridges 21 along its circumference. The friction reduction component is arranged between the two screw sleeves 2 .

[0027] The friction-reducing assembly includes an intermediate support and diverter sleeve 3, which is connected to the shaft of the core shaft 1 and disposed between the two screw sleeves 2. An alloy bushing 4 is sleeved on the outer wall of the intermediate support and diverter sleeve 3. When the core shaft 1 is lateral, the intermediate support and diverter sleeve 3 and the alloy bushing 4 form a friction pair, which prevents friction between the screw sleeves 2 and the alloy bushing 4, thereby preventing wear of the screw sleeves 2.

[0028] Example 3

[0029] The middle support friction reduction device of the expansion dryer includes a core shaft 1. The shaft body of the core shaft 1 is sleeved with two flow guide mechanisms. The shaft body of the core shaft 1 is also connected to a friction reduction component, which is arranged between the two flow guide mechanisms.

[0030] The flow guiding mechanism includes a screw sleeve 2 , which is sleeved on the shaft body of the core shaft 1 . The sleeve body of the screw sleeve 2 is connected with screw ridges 21 along its circumference. The friction reduction component is arranged between the two screw sleeves 2 .

[0031] The friction reduction assembly includes an intermediate support diverter sleeve 3, which is connected to the shaft body of the core shaft 1 and is arranged between the two screw sleeves 2. The outer wall of the intermediate support diverter sleeve 3 is sleeved with an alloy bushing 4.

[0032] The shaft of the core shaft 1 is provided with a first keyway 5, and the inner walls of the intermediate support diverter sleeve 3 and the screw sleeve 2 are both provided with a second keyway 6. A key 7 is connected between the first keyway 5 and the second keyway 6. The key 7 serves as a power key, and during the movement of the core shaft 1, the intermediate support diverter sleeve 3 and the screw sleeve 2 are driven to rotate through the key 7.

[0033] Example 4

[0034] The middle support friction reduction device of the expansion dryer includes a core shaft 1. The shaft body of the core shaft 1 is sleeved with two flow guide mechanisms. The shaft body of the core shaft 1 is also connected to a friction reduction component, which is arranged between the two flow guide mechanisms.

[0035] The flow guiding mechanism includes a screw sleeve 2 , which is sleeved on the shaft body of the core shaft 1 . The sleeve body of the screw sleeve 2 is connected with screw ridges 21 along its circumference. The friction reduction component is arranged between the two screw sleeves 2 .

[0036] The friction reduction assembly includes an intermediate support diverter sleeve 3, which is connected to the shaft body of the core shaft 1 and is arranged between the two screw sleeves 2. The outer wall of the intermediate support diverter sleeve 3 is sleeved with an alloy bushing 4.

[0037] A first key groove 5 is provided on the shaft body of the core shaft 1 , and a second key groove 6 is provided on the inner wall of the intermediate supporting diverter sleeve 3 and the screw sleeve 2 . A key 7 is connected between the first key groove 5 and the second key groove 6 .

[0038] like Figure 2-3 As shown, the inner wall of the intermediate support diverter sleeve 3 is provided with a plurality of diverter grooves 31 along its circumference, and the inlet of the diverter groove 31 has three sides with inclined surfaces, one side with straight surfaces, and the outlet has four sides with straight surfaces.

[0039] Example 5

[0040] The middle support friction reduction device of the expansion dryer includes a core shaft 1. The shaft body of the core shaft 1 is sleeved with two flow guide mechanisms. The shaft body of the core shaft 1 is also connected to a friction reduction component, which is arranged between the two flow guide mechanisms.

[0041] The flow guiding mechanism includes a screw sleeve 2 , which is sleeved on the shaft body of the core shaft 1 . The sleeve body of the screw sleeve 2 is connected with screw ridges 21 along its circumference. The friction reduction component is arranged between the two screw sleeves 2 .

[0042] The friction reduction assembly includes an intermediate support diverter sleeve 3, which is connected to the shaft body of the core shaft 1 and is arranged between the two screw sleeves 2. The outer wall of the intermediate support diverter sleeve 3 is sleeved with an alloy bushing 4.

[0043] A first key groove 5 is provided on the shaft body of the core shaft 1 , and a second key groove 6 is provided on the inner wall of the intermediate supporting diverter sleeve 3 and the screw sleeve 2 . A key 7 is connected between the first key groove 5 and the second key groove 6 .

[0044] The inner wall of the intermediate supporting diverter sleeve 3 is provided with a plurality of diverter grooves 31 along its circumference, and the three sides of the inlet of the diverter groove 31 are arranged as inclined surfaces.

[0045] like Figure 4As shown, the outer wall of the intermediate support and diverter sleeve 3 and the inner wall of the alloy bushing 4 are provided with a hard alloy wear-resistant layer 8, and a gap is provided between the intermediate support and diverter sleeve 3 and the alloy bushing 4. The hard alloy wear-resistant layer 8 between the intermediate support and diverter sleeve 3 and the alloy bushing 4 forms a friction pair.

[0046] The working principle of the intermediate support friction reduction device of the utility model expansion dryer is as follows:

[0047] Under the action of large axial force and unstable radial force, the core shaft 1 bends sideways in the middle position. When the degree of lateral bending reaches a certain extent, the outer wall of the intermediate support diverter sleeve 3 and the inner wall of the alloy bushing 4 come into contact and friction, with a contact area equivalent to several times the original one, avoiding the friction between the screw sleeve 2 and the alloy bushing 4, and the material is squeezed into the relatively long and narrow cylindrical gap between the intermediate support diverter sleeve 3 and the alloy bushing 4. At this time, the material also plays the role of "lubricant". Under the dual action, the degree of wear will be greatly reduced.

[0048] The utility model discloses an intermediate support friction reduction device for an expansion dryer. The contact between the bushing and the diverter sleeve avoids contact friction between the screw sleeve spiral ridge and the bushing. At the same time, the material enters the gap between the bushing and the diverter sleeve to play a lubricating role. Under the dual action, the wear degree of the screw sleeve and the bushing in the middle position is reduced, the frequent replacement of spare parts is avoided, and the operation cost of the device is reduced.

Claims

1. The intermediate support friction reduction device of the expansion dryer is characterized by: It comprises a core shaft (1), wherein the shaft body of the core shaft (1) is sleeved with two flow guide mechanisms, and the shaft body of the core shaft (1) is also connected with a friction reduction component, and the friction reduction component is arranged between the two flow guide mechanisms; The flow guide mechanism comprises a screw sleeve (2), the screw sleeve (2) being sleeved on the shaft body of the core shaft (1), the sleeve body of the screw sleeve (2) being connected with screw ridges (21) along its circumference, and the friction reduction component being arranged between the two screw sleeves (2); The friction reduction assembly comprises an intermediate support diverter sleeve (3), the intermediate support diverter sleeve (3) is connected to the shaft body of the core shaft (1), the intermediate support diverter sleeve (3) is arranged between two screw sleeves (2), and the outer wall of the intermediate support diverter sleeve (3) is sleeved with an alloy bushing (4).

2. The expansion dryer intermediate support friction reduction device according to claim 1, characterized in that: The shaft body of the core shaft (1) is provided with a first key groove (5), the inner walls of the intermediate support diverter sleeve (3) and the screw sleeve (2) are both provided with a second key groove (6), and a key (7) is connected between the first key groove (5) and the second key groove (6).

3. The expansion dryer intermediate support friction reduction device according to claim 1, characterized in that: The inner wall of the intermediate support diversion sleeve (3) is provided with a plurality of diversion grooves (31) along its circumference, and three sides of the inlet of the diversion groove (31) are arranged as inclined surfaces.

4. The expansion dryer intermediate support friction reduction device according to claim 1, characterized in that: The outer wall of the intermediate support diverter sleeve (3) and the inner wall of the alloy bushing (4) are provided with a hard alloy wear-resistant layer (8), and a gap is provided between the intermediate support diverter sleeve (3) and the alloy bushing (4).

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