Linear double-screw structure of air cooling granulator

Abstract

The utility model discloses a linear double-screw structure of an air-cooled granulator. The linear double-screw structure comprises an air-cooled granulator shell and a pair of linear screw bodies, wherein the linear screw bodies are rotationally connected to the inner side of the air-cooled granulator shell through a driving mechanism; the driving mechanism comprises first rotating shafts arranged at the two ends of the linear screw body, the linear screw body is rotationally connected to the interior of the air-cooled granulator shell through the first rotating shafts, and a second gear is fixedly arranged on the first rotating shaft at one end of the linear screw body; a third gear meshed with one of the second gears is arranged at one end, close to the second gears, of the air-cooling granulator shell, and a first gear is further meshed with one side of the third gear. According to the linear double-screw structure of the air-cooled granulator, reverse rotation of the two linear screw bodies can be achieved only by driving of one driving source gear motor through the arranged driving mechanism, the structure is compact, stability is high, and resources are saved.

Description

Technical Field

[0001] The utility model relates to the field of granulators, in particular to a linear twin-screw structure of an air-cooled granulator. Background Art

[0002] Twin-screw granulator is mainly used for filling, blending, modification, increasing, chlorination, processing of polypropylene and super absorbent resin of rubber and plastic and engineering resin, extrusion of biodegradable masterbatch, polyamide polycondensation, polyurethane polyaddition reaction; granulation of carbon powder and magnetic powder, preparation of cable insulation material, sheath material, low-smoke halogen-free flame-retardant PVC cable material and various silane cross-linking materials, etc. Small models are mainly used for scientific research and teaching. The barrel and screw of the parallel twin-screw granulator are designed according to the building block principle and can be combined in different ways as needed.

[0003] At present, the linear twin screws of the air-cooled granulator require two motors to work together, resulting in unnecessary waste of resources. In addition, the air is blown into the interior for cooling during cooling, and the air cooling can only have a good cooling effect on the surface of the material. The material close to the screw inside, especially the material located in the gap between the two screws, cannot be effectively purged by the air cooling. Therefore, the air-cooled granulator has poor uniformity and cooling effect during cooling.

[0004] Therefore, it is necessary to propose a linear twin-screw structure of an air-cooled granulator to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a linear twin-screw structure of an air-cooled granulator, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A linear twin-screw structure of an air-cooled granulator comprises an air-cooled granulator housing and a pair of linear screw bodies rotatably connected to the inner side of the air-cooled granulator housing through a driving mechanism;

[0008] The driving mechanism includes a first rotating shaft arranged at both ends of the linear screw body, the linear screw body is rotatably connected to the air-cooled granulator housing through the first rotating shaft, and a second gear is fixedly arranged on the first rotating shaft at one end, a third gear meshing with one of the second gears is arranged at one end of the air-cooled granulator housing close to the second gear, a first gear is also meshed on one side of the third gear, and the first gear is also meshed with another second gear, and a reduction motor for driving the third gear or the first gear to rotate is arranged at the end of the air-cooled granulator housing.

[0009] Preferably, a fixed frame is provided at one end of the inner side of the air-cooled granulator housing, and the first rotating shaft of the linear screw body at one end away from the second gear is rotatably connected to the fixed frame, and the first rotating shaft corresponding to the second gear is rotatably connected to the side wall of the end of the air-cooled granulator housing, and the first rotating shaft at this end extends to the outside of the air-cooled granulator housing.

[0010] Preferably, the third gear is rotatably connected to the end of the air-cooled granulator housing via a third rotating shaft, the first gear is rotatably connected to the end of the air-cooled granulator housing via a second rotating shaft, and the third gear has the same specifications as the first gear.

[0011] Preferably, the output shaft of the reduction motor is fixedly connected to the third rotating shaft or the second rotating shaft via a coupling.

[0012] Preferably, it also includes a water cooling mechanism, which includes a water storage tank arranged on one side of the air-cooled granulator housing, one side of the water storage tank is connected to a water chiller through a connecting pipe, the output end of the water chiller is connected to an inlet pipe, and the upper end of one side of the water storage tank is connected to a return pipe. A cooling cavity is arranged on the inner side of the linear screw body, a circular hole is arranged through the middle part of the first rotating shaft, and a connecting hole for connecting the cooling cavity and the circular hole is arranged at the end of the linear screw body.

[0013] Preferably, the end of the reflux pipe away from the water tank extends to the inner side of the air-cooled granulator casing and is rotatably connected to the circular hole on the first rotating shaft at one end thereof through a sealed bearing, and the end of the inlet pipe away from the water chiller is rotatably connected to the circular hole on the first rotating shaft at the other end through a sealed bearing.

[0014] Compared with the prior art, the utility model provides a linear twin-screw structure of an air-cooled granulator, which has the following beneficial effects:

[0015] The linear twin-screw structure of the air-cooled granulator can realize the reverse rotation of the two linear screw bodies by being driven by only one driving source reduction motor through the arranged driving mechanism. It has compact structure, high stability, and saves resources. Moreover, the end of the linear screw body is not blocked by the driving source. Based on the above, a water cooling mechanism is arranged at the end of the linear screw body. Cold water is introduced into the water cooling mechanism from one end of the linear screw body and discharged from the other end. The water cooling mechanism is then cooled by a water chiller, thereby realizing circulation to cool the linear screw body, and then the material near the outside of the linear screw body is effectively cooled through the linear screw body. The internal water cooling is added without changing the air cooling mechanism of the air-cooled granulator, so as to improve the cooling uniformity, and the structure is simple and compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model air-cooled granulator after the shell is removed;

[0018] Figure 3 This utility model Figure 2 A structural diagram from another perspective of the basis;

[0019] Figure 4 It is a structural schematic diagram of the linear screw body and the driving mechanism of the utility model;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the linear screw body of the utility model.

[0021] In the figure: 1. air-cooled granulator housing; 2. water chiller; 3. water storage tank; 4. linear screw body; 5. reflux pipe; 6. inlet pipe; 7. fixed frame; 8. first rotating shaft; 9. connecting pipe; 10. reduction motor; 11. first gear; 12. second gear; 13. second rotating shaft; 14. third gear; 15. third rotating shaft; 16. cooling cavity; 17. round hole; 18. sealed bearing; 19. connecting hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1-5 As shown, a linear twin-screw structure of an air-cooled granulator comprises an air-cooled granulator housing 1 and a pair of linear screw bodies 4 rotatably connected to the inner side of the air-cooled granulator housing 1 through a driving mechanism;

[0024] As a preferred embodiment, the driving mechanism includes a first rotating shaft 8 arranged at both ends of the linear screw body 4, the linear screw body 4 is rotatably connected to the air-cooled granulator housing 1 through the first rotating shaft 8, and a second gear 12 is fixedly arranged on the first rotating shaft 8 at one end, and a fixing frame 7 is arranged at one end inside the air-cooled granulator housing 1, the first rotating shaft 8 at one end of the linear screw body 4 away from the second gear 12 is rotatably connected to the fixing frame 7, the first rotating shaft 8 corresponding to the second gear 12 is rotatably connected to the side wall of the end of the air-cooled granulator housing 1, and the first rotating shaft 8 at this end extends to the outside of the air-cooled granulator housing 1, and the air-cooled granulator housing 1 is provided with a first rotating shaft 8 at one end close to the second gear 12. A third gear 14 meshed with one of the second gears 12, the third gear 14 is rotatably connected to the end of the air-cooled granulator housing 1 through a third rotating shaft 15, one side of the third gear 14 is also meshed with a first gear 11, the first gear 11 is rotatably connected to the end of the air-cooled granulator housing 1 through a second rotating shaft 13, and the third gear 14 has the same specifications as the first gear 11, and the first gear 11 is also meshed with another second gear 12, and a reduction motor 10 for driving the third gear 14 or the first gear 11 to rotate is provided at the end of the air-cooled granulator housing 1, specifically, the output shaft of the reduction motor 10 is fixedly connected to the third rotating shaft 15 or the second rotating shaft 13 through a coupling.

[0025] Based on the above, a water cooling mechanism is also provided, which includes a water storage tank 3 provided on one side of the air-cooled granulator housing 1, one side of the water storage tank 3 is connected to the water chiller 2 through a connecting pipe 9, the output end of the water chiller 2 is connected to an inlet pipe 6, the upper end of one side of the water storage tank 3 is connected to a return pipe 5, a cooling cavity 16 is provided on the inner side of the linear screw body 4, a circular hole 17 is provided through the middle part of the first rotating shaft 8, the end of the return pipe 5 away from the water storage tank 3 extends to the inner side of the air-cooled granulator housing 1 and is rotatably connected to the circular hole 17 on the first rotating shaft 8 at one end through a sealed bearing 18, the end of the inlet pipe 6 away from the water chiller 2 is rotatably connected to the circular hole 17 on the first rotating shaft 8 at the other end through a sealed bearing, and a connecting hole 19 for connecting the cooling cavity 16 and the circular hole 17 is provided at the end of the linear screw body 4.

[0026] It should be noted that the utility model is a linear twin-screw structure of an air-cooled granulator. When in use, the reduction motor 10 directly drives the first gear 11 or the third gear 14 to rotate. The rotation of any one of the two can drive the other to rotate, and can also drive one of the second gears 12 to rotate, and the other driven can drive the remaining second gear 12 to rotate, and then the two second gears 12 drive the two linear screw bodies 4 to rotate synchronously and in the opposite direction. When cooling, the original air cooling mechanism is not changed, and then the water tank 3 is cooled. Cooling water is filled in the middle, and the cooling water in the water storage tank 3 enters the water chiller 2 through the connecting pipe 9. After being cooled by the water chiller 2, it is passed into the cooling cavity 16 through the inlet pipe 6, the circular hole 17, and the connecting hole 19. When circulating in the cooling cavity 16, the linear screw body 4 can be cooled, and then the linear screw body 4 cools the material on the outside. After that, the cooling water enters the return pipe 5 through the connecting hole 19 and the circular hole 17 at the other end, and then returns to the water storage tank 3 through the return pipe 5. In this way, internal circulating water cooling is realized, which improves the uniformity and efficiency of cooling.

[0027] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A linear twin-screw structure of an air-cooled granulator, characterized in that: It comprises an air-cooled granulator housing (1) and a pair of linear screw bodies (4) rotatably connected to the inner side of the air-cooled granulator housing (1) through a driving mechanism; The driving mechanism comprises a first rotating shaft (8) arranged at both ends of a linear screw body (4); the linear screw body (4) is rotatably connected to an air-cooled granulator housing (1) via the first rotating shaft (8); a second gear (12) is fixedly arranged on one end of the first rotating shaft (8); a third gear (14) meshing with one of the second gears (12) is arranged at one end of the air-cooled granulator housing (1) close to the second gear (12); a first gear (11) is also meshed on one side of the third gear (14); and the first gear (11) is also meshed with another second gear (12); a reduction motor (10) for driving the third gear (14) or the first gear (11) to rotate is arranged at the end of the air-cooled granulator housing (1).

2. The linear twin-screw structure of an air-cooled granulator according to claim 1, characterized in that: A fixing frame (7) is provided at one end of the inner side of the air-cooled granulator housing (1); the first rotating shaft (8) at one end of the linear screw body (4) away from the second gear (12) is rotatably connected to the fixing frame (7); the first rotating shaft (8) corresponding to the second gear (12) is rotatably connected to the side wall of the end of the air-cooled granulator housing (1), and the first rotating shaft (8) at this end extends to the outside of the air-cooled granulator housing (1).

3. The linear twin-screw structure of an air-cooled granulator according to claim 2, characterized in that: The third gear (14) is rotatably connected to the end of the air-cooled granulator housing (1) via a third rotating shaft (15), and the first gear (11) is rotatably connected to the end of the air-cooled granulator housing (1) via a second rotating shaft (13), and the third gear (14) has the same specifications as the first gear (11).

4. The linear twin-screw structure of an air-cooled granulator according to claim 3, characterized in that: The output shaft of the reduction motor (10) is fixedly connected to the third rotating shaft (15) or the second rotating shaft (13) via a coupling.

5. The linear twin-screw structure of an air-cooled granulator according to claim 1, characterized in that: It also includes a water cooling mechanism, which includes a water storage tank (3) arranged on one side of the air-cooled granulator housing (1), one side of the water storage tank (3) is connected to a water cooler (2) through a connecting pipe (9), the output end of the water cooler (2) is connected to an inlet pipe (6), and the upper end of one side of the water storage tank (3) is connected to a return pipe (5), the inner side of the linear screw body (4) is provided with a cooling cavity (16), the middle part of the first rotating shaft (8) is provided with a circular hole (17), and the end of the linear screw body (4) is provided with a connecting hole (19) for connecting the cooling cavity (16) and the circular hole (17).

6. The linear twin-screw structure of an air-cooled granulator according to claim 5, characterized in that: The end of the return pipe (5) away from the water storage tank (3) extends to the inner side of the air-cooled granulator housing (1) and is rotatably connected to the circular hole (17) on the first rotating shaft (8) at one end thereof via a sealed bearing (18), and the end of the inlet pipe (6) away from the water cooler (2) is rotatably connected to the circular hole (17) on the first rotating shaft (8) at the other end thereof via a sealed bearing.

Images