Novel screw conveyer shaft

Abstract

The utility model relates to a novel screw conveyer shaft, which comprises hollow shafts, a solid shaft and a middle support frame, two ends of the solid shaft are connected with the hollow shafts, the hollow shafts and the solid shaft are coaxially arranged, the solid shaft is arranged on the middle support frame, and the middle support frame is used for supporting the middle position of the screw conveyer shaft. The middle supporting frame is arranged at the middle position to support the middle position of the spiral shaft, so that an original installation mode is changed, loads generated in the operation process of equipment can be better balanced and dispersed, the overall stability of the equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of viscose production equipment, in particular to a novel screw conveyor shaft. Background Art

[0002] When the screw shaft rotates, the material can only move forward along the bottom of the conveyor trough under the push of the blades due to the gravity of the material and the friction between the material and the trough wall. The movement of the material in the middle bearing depends on the thrust of the material moving forward from behind.

[0003] The transportation of materials in the conveyor is a kind of sliding motion. In order to put the screw shaft in a more favorable tensile state, the existing technology generally places the drive mechanism and the discharge port at the same end of the conveyor, and places the feed port near the tail of the other end. The rotating spiral blades push the material for transportation. The force that prevents the material from rotating with the screw conveyor blades is the material's own weight and the friction resistance of the screw conveyor casing to the material. The screw shaft of the screw conveyor has a thrust bearing at the end of the material's movement direction to give the screw an axial reaction force along with the material. When the machine is longer, the middle part of the screw shaft is more likely to break. The service life of the screw shaft is generally 3-6 months, and it will break in the middle. The load borne by the middle part of the screw shaft exceeds the limit that it can bear, which seriously affects production. Utility Model Content

[0004] The utility model aims to solve the problem that the bolt shaft is prone to breakage, and provides a new type of screw conveyor shaft. A solid shaft is inserted into the middle position of the bolt shaft where it is prone to breakage to improve the strength, which can prevent the middle part of the spiral tube from being deformed too much, reduce stress concentration and failures caused by fatigue fracture, and thus extend the service life of the equipment. The main ideas are:

[0005] A new type of screw conveyor shaft includes a hollow shaft, a solid shaft and a middle support frame, wherein the two ends of the solid shaft are connected to the hollow shaft, the hollow shaft and the solid shaft are coaxially arranged, the solid shaft is installed on the middle support frame, and the middle support frame is used to support the middle position of the screw conveyor shaft. In order to prevent excessive deformation of the middle part of the spiral tube, this solution adds a solid shaft in the middle position of the spiral shaft to enhance the strength and rigidity of the middle part of the spiral and reduce failures caused by shaft deformation or breakage; and a middle support frame is provided in the middle position to support the middle position of the spiral shaft, thereby changing the original installation method. Compared with the original two-point support at both ends of the spiral tube, the screw conveyor is installed with a middle support frame in the middle position of the spiral tube in this solution, so that the load generated by the equipment during operation can be better balanced and dispersed, thereby improving the overall stability and service life of the equipment.

[0006] Preferably, a front bearing and a rear bearing are respectively arranged on both sides of the hollow shaft. The front bearing and the rear bearing support both ends of the hollow shaft 1, so that the spiral tube can be stably supported.

[0007] Preferably, the end of the solid shaft is inserted into the hollow shaft, and the hollow shaft and the solid shaft are connected by welding. The solid shaft is inserted into the hollow shaft by electric welding, so that a stable connection is formed between the solid shaft and the hollow shaft.

[0008] Preferably, the middle support frame includes a hanger and a bearing, a bearing seat is arranged at the lower end of the hanger, the bearing is connected to the hanger through the bearing seat, and the bearing sleeve is arranged on the solid shaft. The hanger is arranged at the upper end of the screw conveyor housing, and the bearing shaft is arranged at the lower end of the hanger 31, and the spiral tube is hoisted through the middle support frame 3.

[0009] The second purpose of the utility model is to solve the technical problem that the stress concentration during the transmission process when the solid shaft is too long leads to uneven force. Furthermore, the hanger includes two side plates, the two side plates are equipped with bearings, and the two side plates are arranged on the solid shaft. The hanger of this scheme adopts a C-shaped frame, and two side plates are provided with bearings, so that the middle support frame includes two support points, and the two support points are distributed on the symmetrical sides of the solid shaft. Then, the solid shaft is balanced in force during the transmission process, which improves the stability of the entire transmission system and optimizes the load distribution.

[0010] The third aspect of the utility model aims to solve the technical problem that after the solid shaft is installed, vibration and installation errors are generated between the hollow shafts, which affect the transmission and cause stress concentration. Furthermore, the solid shaft includes a left solid shaft, a right solid shaft and a cross slider coupling. The axial positions of the left solid shaft and the right solid shaft are provided with threaded holes, which are connected by a cross slider coupling. This solution sets the solid shaft as a two-section structure, and connects the solid shafts by a cross slider coupling. The cross slider coupling has good torque transmission capability and certain axial, radial and angular compensation functions, which can reduce transmission problems caused by equipment vibration or installation errors.

[0011] Preferably, the length of the solid shaft is 350-450 mm, the length of the left solid shaft and the right solid shaft is 120-160 mm, and the depth of the threaded holes formed in the left solid shaft and the right solid shaft is 90-110 mm.

[0012] Preferably, it also includes a shell, a driving mechanism and a spiral blade, wherein baffle plates are respectively arranged at both ends of the shell, and the baffle plates at both ends are respectively installed with a front bearing and a rear bearing, a middle support frame is hung and installed on the top of the middle position of the shell, a feed port is arranged at the top of one end of the shell, and a discharge port is arranged at the bottom of the other end of the shell, the driving mechanism is connected to the screw conveyor shaft, and the spiral blades are installed on the outer wall of the screw output shaft. The shell is constructed as a cavity for material transportation, and the shell is used to fix and protect the internal components of the conveyor to ensure the normal operation of the production and transportation work, the feed port is used to put the material into the screw conveyor, and the discharge port is used to discharge the material; during the transportation process, the driving mechanism transmits power to the screw output shaft to make it rotate, and the material is pushed to the discharge port through the rotation of the spiral blades, and the material can also be mixed, stirred, loosened, heated and cooled during the transportation process.

[0013] The beneficial effects of the utility model are:

[0014] The screw conveyor shaft is supported by adding a solid shaft in the middle position and installing a middle support frame on the solid shaft in the middle position on the basis of the original head and tail two-point support. This can better balance and disperse the load generated by the equipment during operation, reduce failures caused by stress concentration and fatigue fracture, and thus improve the overall stability and service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is a partial enlarged view of the utility model.

[0017] The reference numerals include: 1. hollow shaft; 2. solid shaft; 3. middle support frame; 31. hanger; 32. bearing; 33. side plate; 4. coupling. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0019] It should be noted that all actions to obtain signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located, and with the authorization given by the owner of the corresponding device.

[0020] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance.

[0021] Embodiment 1:

[0022] like Figure 1-Figure 2 As shown, a new type of screw conveyor shaft of this embodiment includes a hollow shaft 1, a solid shaft 2 and a middle support frame 3, both ends of the solid shaft 2 are connected to the hollow shaft 1, the hollow shaft 1 and the solid shaft 2 are coaxially arranged, the solid shaft 2 is installed on the middle support frame 3, and the middle support frame 3 is used to support the middle position of the screw conveyor shaft.

[0023] In order to prevent excessive deformation of the middle part of the spiral tube, a solid shaft is added in the middle position of the spiral shaft to enhance the strength and rigidity of the middle part of the spiral and reduce failures caused by shaft deformation or breakage; and a middle support frame is provided in the middle position to support the middle position of the spiral shaft, thereby changing the original installation method. Compared with the original two-point support at both ends of the spiral tube, the screw conveyor is supported by the middle support frame in the middle position of the spiral tube in this solution, which can better balance and disperse the load generated by the equipment during operation, thereby improving the overall stability and service life of the equipment.

[0024] A front bearing and a rear bearing are respectively arranged on both sides of the hollow shaft 1. The front bearing and the rear bearing support both ends of the hollow shaft 1, so that the spiral tube can be stably supported.

[0025] The end of the solid shaft 2 is inserted into the hollow shaft 1, and the hollow shaft 1 is connected to the solid shaft 2 by welding. The solid shaft 2 is inserted into the hollow shaft 1 by electric welding, so that a stable connection is formed between the solid shaft 2 and the hollow shaft 1.

[0026] Embodiment 2:

[0027] like Figure 1-Figure 2 As shown, the middle support frame 3 of this embodiment includes a hanger 31 and a bearing 32. A bearing seat is provided at the lower end of the hanger 31. The bearing 32 is connected to the hanger 31 through the bearing seat, and the bearing 32 is sleeved on the solid shaft 2. The hanger 31 is arranged at the upper end of the screw conveyor housing, and the bearing shaft is arranged at the lower end of the hanger 31, and the spiral tube is hoisted through the middle support frame 3.

[0028] like Figure 1As shown, the hanger 31 of this embodiment includes two side plates 33, the two side plates 33 are equipped with bearings 32, and the two side plates 33 are arranged on the solid shaft 2. The hanger 31 of this solution adopts a C-shaped frame, and two side plates 33 are arranged to install bearings 32, so that the middle support frame 3 includes two support points, and the two support points are distributed on the symmetrical sides of the solid shaft 2, so that the solid shaft 2 is balanced in force during the transmission process, thereby improving the stability of the entire transmission system and optimizing the load distribution.

[0029] Embodiment 3:

[0030] like Figure 2 As shown, the solid shaft 2 of this embodiment includes a left solid shaft, a right solid shaft and a cross slider coupling 4. Threaded holes are provided at the axial positions of the left solid shaft and the right solid shaft, and are connected through the cross slider coupling 4.

[0031] In this embodiment, M60 threaded holes are provided at the axis positions of the left solid shaft and the right solid shaft.

[0032] In this embodiment, the solid shaft 2 is configured as a two-section structure, and the solid shafts 2 are connected via a cross slider coupling 4. The cross slider coupling 4 has good torque transmission capability and certain axial, radial, and angular compensation functions, and can reduce transmission problems caused by equipment vibration or installation errors.

[0033] The cross slider coupling consists of two half couplings with grooves on the end faces and a slider disc with square tenons on both sides. The tenons on both sides of the slider are perpendicular to each other and radially pass through the center position. The two half couplings with grooves are connected to the threaded holes of the left solid shaft and the right solid shaft through external threads.

[0034] In this embodiment, the internal thread of the left solid shaft is a right-handed internal thread, and the internal thread of the right solid shaft is a left-handed internal thread; the two ends of the cross slider coupling 4 arranged in the solid shaft are provided with external threads, the half coupling that matches the left solid shaft thread is provided with a right-handed external thread, and the half coupling that matches the right solid shaft thread is provided with a left-handed external thread.

[0035] The length of the solid shaft 2 is 350-450 mm, the length of the left solid shaft and the right solid shaft is 120-160 mm, and the depth of the threaded holes provided in the left solid shaft and the right solid shaft is 90-110 mm.

[0036] Embodiment 4:

[0037] A new type of screw conveyor shaft in this embodiment also includes a shell, a driving mechanism and a spiral blade. Baffle plates are respectively arranged at both ends of the shell, and the baffle plates at both ends are respectively installed with a front end bearing and a tail bearing. A middle support frame 3 is suspended and installed at the top of the middle position of the shell. A feed port is arranged at the top of one end of the shell, and a discharge port is arranged at the bottom of the other end of the shell. The driving mechanism is connected to the screw conveyor shaft in a transmission manner, and the spiral blades are installed on the outer wall of the spiral output shaft.

[0038] The shell is constructed as a cavity for material transportation. The shell is used to fix and protect the internal components of the conveyor to ensure the normal operation of production and transportation. The feed port is used to put materials into the screw conveyor, and the discharge port is used to discharge materials.

[0039] The drive mechanism is the driving source of the screw conveyor. The drive mechanism is usually composed of a motor, a reducer and a coupling. The motor transmits power to the screw conveyor shaft through the reducer to make it rotate and push the material. The coupling is used to connect the motor and the reducer to ensure the normal operation of the drive mechanism.

[0040] During the conveying process, the driving mechanism transmits power to the screw output shaft to make it rotate, and the material is pushed toward the discharge port through the rotation of the spiral blades. During the conveying process, the material can also be mixed, stirred, loosened, heated and cooled.

[0041] Among them, the positions of the feed port and the discharge port can be adjusted according to actual needs to adapt to different process requirements.

[0042] During use, the utility model:

[0043] The spiral tube is installed sequentially through the front bearing, the middle support frame 3 and the tail bearing to support the three parts of the spiral tube and prevent the middle part of the spiral tube from being deformed too much. The middle support frame 3 is used to support the newly added solid shaft 2, which is welded into the inside of the hollow shaft 1. The segmented left solid shaft and right solid shaft used by the solid shaft 2 have internal threads in the middle. The left solid shaft and the right solid shaft are connected to the two ends 4 of the cross slider coupling by threaded connection to form power transmission.

[0044] The utility model reduces failures caused by stress concentration and fatigue fracture by optimizing the transmission system and the supporting structure, thereby extending the service life of the equipment.

[0045] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A new type of screw conveyor shaft, characterized by: The invention comprises a hollow shaft (1), a solid shaft (2) and a middle support frame (3), wherein the two ends of the solid shaft (2) are connected to the hollow shaft (1), the hollow shaft (1) and the solid shaft (2) are coaxially arranged, the solid shaft (2) is installed on the middle support frame (3), and the middle support frame (3) is used to support the middle position of the screw conveyor shaft.

2. A novel screw conveyor shaft according to claim 1, characterized in that: A front end bearing and a rear end bearing are respectively arranged on both sides of the hollow shaft (1).

3. A novel screw conveyor shaft according to claim 1, characterized in that: The end of the solid shaft (2) is inserted into the interior of the hollow shaft (1), and the hollow shaft (1) and the solid shaft (2) are connected by welding.

4. A novel screw conveyor shaft according to claim 1, characterized in that: The middle support frame (3) comprises a hanger (31) and a bearing (32); a bearing seat is arranged at the lower end of the hanger (31); the bearing (32) is connected to the hanger (31) via the bearing seat; and the bearing (32) is sleeved on the solid shaft (2).

5. A novel screw conveyor shaft according to claim 4, characterized in that: The hanger (31) comprises two side plates (33), bearings (32) are installed on the two side plates (33), and the two side plates (33) are arranged to support each other on the solid shaft (2).

6. A novel screw conveyor shaft according to claim 1, characterized in that: The solid shaft (2) comprises a left solid shaft, a right solid shaft and a cross-slider coupling (4); threaded holes are provided at the axis positions of the left solid shaft and the right solid shaft, and are connected via the cross-slider coupling (4).

7. A novel screw conveyor shaft according to claim 6, characterized in that: The length of the solid shaft (2) is 350-450 mm, the length of the left solid shaft and the right solid shaft is 120-160 mm, and the depth of the threaded holes provided in the left solid shaft and the right solid shaft is 90-110 mm.

8. A novel screw conveyor shaft according to any one of claims 1 to 7, characterized in that: It also includes a shell, a driving mechanism and a spiral blade, wherein baffle plates are respectively arranged at both ends of the shell, and the baffle plates at both ends are respectively installed with a front end bearing and a tail end bearing, a middle support frame (3) is suspended and installed at the top of the middle position of the shell, a feed port is arranged at the top of one end of the shell, and a discharge port is arranged at the bottom of the other end of the shell, the driving mechanism is connected to the screw conveyor shaft, and the spiral blade is installed on the outer wall of the screw output shaft.

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