Vibration dryer and vibration excitation device

Abstract

The utility model relates to the field of material drying, in particular to a vibration dryer and a vibration excitation device. The vibration excitation device comprises a driving motor, a main shaft assembly, a bearing assembly and an eccentric assembly; the bearing assembly is used for supporting the spindle, the driving motor is connected with the spindle assembly and drives the spindle assembly to rotate, and the eccentric assembly is connected to the spindle assembly. The spindle assembly comprises a first spindle and a second spindle which are connected through a first coupler, and the end, away from the first coupler, of the first spindle is connected with a driving motor. According to the vibration excitation device, the machining and assembling difficulty is reduced, the operation stability of the device is improved, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the field of material drying, and in particular to a vibration dryer and a vibration excitation device. Background Art

[0002] Vibration dryer is mainly suitable for drying powdery and granular materials. Its principle is to use a vibration motor or an exciting device as a power source to generate an exciting force to fluidize the material in the drying container. The fluidized material is in constant contact with the inner wall of the drying chamber heated by the jacket, and the temperature of the material rises through heat transfer, thereby being dried.

[0003] The equipment directly uses a vibration motor as the power source, which will cause the problem of concentrated excitation force and heat dissipation, affecting the service life of the equipment. However, if a vibration device is used as the power source, the motor is set below the container, far away from the drying container, and the heat dissipation environment is good; the vibration device is connected to the drying container through two or more bearing supports, which can disperse the components or parts acted by the vibration force, thereby suppressing the damage of specific structural components and extending the service life of the components; and the amplitude adjustment range of the vibration device is large, which can be applied to different materials, improving the fluidization state of the material and the drying effect.

[0004] There are also some problems with the vibration device as a power source. Since the container of the vibration dryer is usually long, the main shaft of the vibration device is long, which makes it difficult to process and assemble. It is difficult to ensure the coaxiality of different bearing components. When the processing and assembly errors are large, the main shaft circle runout will be too large, affecting the service life of the bearing. Long-term work will cause the welds at the corresponding positions of the device to crack easily. Utility Model Content

[0005] The present application provides a vibration dryer and a vibration excitation device, wherein the vibration excitation device reduces the difficulty of processing and assembly and improves the operating stability and service life of the device.

[0006] In a first aspect, the present application provides a vibration excitation device, comprising a driving motor, a main shaft assembly, a bearing assembly and an eccentric assembly; the driving motor is connected to and drives the main shaft assembly to rotate, the bearing assembly is provided in at least two groups and supports the main shaft assembly, and the eccentric assembly is connected to the main shaft assembly;

[0007] The spindle assembly includes a first spindle and a second spindle, the first spindle and the second spindle are connected via a first coupling, and one end of the first spindle away from the first coupling is connected to the drive motor.

[0008] In some embodiments, a second coupling is provided between the drive motor and the first main shaft.

[0009] In some embodiments, the first coupling and / or the second coupling is a universal joint coupling.

[0010] In some embodiments, vibration isolation pads are provided at both ends of the first coupling, and / or, vibration isolation pads are provided at both ends of the second coupling.

[0011] In some embodiments, the bearing assembly includes a bearing seat, a bearing body and a bearing cover, and the bearing seat is provided with a bearing hole and a process alignment hole which is arranged eccentrically with the bearing hole.

[0012] In some embodiments, the bearing seat is provided with a connecting flange at one end away from the bearing hole thereof, and a positioning block is provided on the connecting end surface of the connecting flange.

[0013] In some embodiments, a protective outer cover is further included, the bearing seat is provided with an outer cover mounting plate, and the protective outer cover is connected to the outer cover mounting plate by bolts.

[0014] In some embodiments, the eccentric components are symmetrically arranged on both sides of the bearing seat.

[0015] In some embodiments, the eccentric assembly comprises:

[0016] A main eccentric block eccentrically connected to the periphery of the main shaft assembly;

[0017] A secondary eccentric block, eccentrically connected to the periphery of the main shaft assembly, and the overlap angle of the main eccentric block and the secondary eccentric block in the circumferential direction of the main shaft assembly is adjustable;

[0018] The connecting fastener connects and fixes the main eccentric block and the auxiliary eccentric block.

[0019] In a second aspect, the present application provides a vibration dryer, comprising a drying container, a frame and the vibration excitation device described in any one of the above items; the drying container is provided with an upper support and a docking flange, the upper support and the frame are connected by a spring, and the docking flange is fixed to the bearing assembly.

[0020] Compared with the prior art, the above technical solution provided by the embodiment of the present application has the following advantages: the main shaft assembly is connected by an eccentric assembly, so that the driving motor drives the main shaft assembly to rotate eccentrically to generate a periodic exciting force. By setting the main shaft assembly in the form of a first main shaft and a second main shaft, the length and processing difficulty of the main shaft are reduced, and a certain buffering effect can be played while connecting the first main shaft and the second main shaft with the help of the first coupling, which is convenient for compensating for the possible axial deviation of the first main shaft and the second main shaft when the first main shaft and the second main shaft are supported by different bearing assemblies, and improving the coaxiality with different bearing assemblies; avoiding excessive circular runout of the main shaft assembly, reducing wear on the bearing assembly, and improving the operating stability and service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 A schematic diagram of an excitation device provided in an embodiment of the present application;

[0025] Figure 2 for Figure 1 Schematic diagram of the eccentric assembly;

[0026] Figure 3 for Figure 2 A cross-sectional view of the middle eccentric assembly along the axial direction of the main shaft assembly;

[0027] Figure 4 A schematic diagram of a vibration dryer provided in an embodiment of the present application;

[0028] Figure 5 for Figure 4 Right view of .

[0029] Description of reference numerals:

[0030] 1-vibration device; 2-drying container; 3-feeding port; 4-dust removal port; 5-inspection door; 6-spring; 7-upper support; 8-manhole; 9-discharge port; 10-frame; 11-joint flange;

[0031] 101-driving motor; 102-second coupling; 103-first main shaft; 104-connecting flange; 105-positioning block; 106-process alignment hole; 107-bearing seat; 108-outer cover mounting plate; 109-protective outer cover; 110-bearing body; 111-second main shaft; 112-vibration isolation pad; 113-eccentric assembly; 114-bearing cover; 115-first coupling; 11301-locking key; 11302-main eccentric block; 11303-secondary eccentric block; 11304-connecting fasteners. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0034] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0035] In order to solve the problem that the vibration excitation device 1 in the prior art is difficult to process and assemble and is prone to large assembly errors, which affects the operating stability and service life of the device, the present application provides a vibration excitation device 1 that can reduce the difficulty of processing and assembly, improve the operating stability of the device, reduce component wear, and extend the service life of the device.

[0036] See also Figure 1 and Figure 4, an embodiment of the present application provides an excitation device 1, which is used to generate a periodic excitation force to drive the drying container 2 of the vibration dryer to vibrate. The excitation device 1 mainly includes a drive motor 101, a spindle assembly, a bearing assembly and an eccentric assembly 113. Among them, the eccentric assembly 113 is eccentrically arranged relative to the axis of the spindle assembly, so that the rotation center of the spindle assembly does not coincide with its axis, so that the spindle assembly vibrates eccentrically when it is driven to rotate, thereby generating a periodic excitation force. The bearing assembly is used to support the rotation of the spindle assembly, and the bearing assembly also serves to connect the drying container 2 and the spindle assembly, so as to transmit the excitation force generated by the eccentric rotation of the spindle assembly to the drying container 2, driving the drying container 2 to vibrate.

[0037] Among them, the spindle assembly includes a first spindle 103, a second spindle 111 and a first coupling 115, the first spindle 103 and the second spindle 111 are connected by means of the first coupling 115, and one end of the first spindle 103 away from the first coupling 115 is connected to the drive motor 101 and rotates under the drive motor 101. By setting the spindle as the structure of the first spindle 103 and the second spindle 111, the length of the spindle is shortened, and the processing difficulty and processing cost are reduced. In addition, the first spindle 103 and the second spindle 111 are connected by the first coupling 115, and the first coupling 115 plays a certain buffering role, allowing the first spindle 103 and the second spindle 111 to produce an appropriate amount of axial offset and misalignment, so as to avoid the bearing holes of different bearing assemblies cannot ensure accurate alignment, and the spindle length is too long to cause assembly difficulties. This setting ensures the assembly accuracy between the spindle assembly and different bearing assemblies, effectively prevents the spindle assembly from being too large in circular runout, improves the stability of the device, slows down the wear of the bearing assembly, and extends the service life of the device. During specific implementation, the main shaft assembly may further be provided with a third main shaft as required, and the third main shaft is connected to the second main shaft 111 via a third coupling.

[0038] In some embodiments, a second coupling 102 is further connected between the drive motor 101 and the first main shaft 103, and the first coupling 115 and the second coupling 102 are preferably universal joint couplings. The universal joint coupling can make the two shafts not coaxial, and can realize continuous rotation of the two connected shafts when there is an axis angle, and reliably transmit torque and motion. It has a large angular compensation capability, a compact structure and high transmission efficiency.

[0039] In addition, vibration isolation pads 112 may be provided at both ends of the first coupling 115 and at both ends of the second coupling 102 as required. In other words, vibration isolation pads 112 may be provided between the connection between the first coupling 115 and the first main shaft 103, between the connection between the first coupling 115 and the second main shaft 111, between the connection between the second coupling 102 and the output shaft of the drive motor 101, and between the connection between the second coupling 102 and the first main shaft 103. The vibration isolation pads 112 have the functions of buffering, eliminating or reducing rigid friction, and can also reduce the noise generated during operation.

[0040] The bearing assembly includes a bearing seat 107, a bearing body 110, and a bearing cover 114. The bearing seat 107 is provided with a bearing hole, the bearing body 110 is installed in the bearing hole, and the bearing cover 114 is arranged on both sides of the bearing hole, which plays the role of installation limit and sealing protection for the bearing body 110. In order to ensure the coaxiality of the first spindle 103 and the second spindle 111, the bearing seat 107 is also provided with a process alignment hole 106, and the process alignment hole 106 and the bearing hole are located at different positions of the bearing seat 107. During the processing of the bearing hole, the process alignment hole 106 is used to position different bearing seats 107, which is convenient for matching the bearing holes of the bearing seats 107, ensuring the coaxiality of the bearing holes of different bearing seats 107, and then improving the coaxiality of the support of each section of the spindle assembly, such as the first spindle 103 and the second spindle 111, improving the assembly accuracy, and reducing the wear between the bearing assembly and the spindle assembly.

[0041] The bearing seat 107 is in a state of being suspended and connected to the drying container 2 as a whole, and serves to connect the main shaft assembly and the drying container 2 and to support and limit the main shaft assembly, so that the bearing seat 107 can transmit the exciting force generated by the eccentric rotation of the main shaft assembly to the interference container. The bearing hole is provided at the lower position of the bearing seat 107, and the process alignment hole 106 is provided at the upper position of the bearing seat 107. In order to facilitate the connection between the bearing seat 107 and the drying container 2, a connecting flange 104 is provided at the top end of the bearing seat 107, that is, the end away from the bearing hole, and the bearing seat 107 is suspended and installed relative to the drying container 2 through the connecting flange 104.

[0042] Furthermore, in order to facilitate precise alignment of the connecting flange 104 and the drying container 2, a positioning block 105 is provided on the connecting end face of the connecting flange 104. With the help of the positioning block 105, the connecting flange 104 of the bearing seat 107 and the docking flange 11 on the drying container 2 are docked and positioned, so that the two can be conveniently connected by fasteners such as bolts.

[0043] In some embodiments, the vibration device 1 further includes a protective outer cover 109, which is used to cover and install on the periphery of the main shaft assembly to play a safety protection role and prevent on-site personnel from accidentally touching and getting injured. Compared with the traditional method of welding and fixing the protective outer cover 109, which is easy to cause cracking at the weld as the vibration device 1 is running, the vibration device 1 of the embodiment of the present application is also provided with an outer cover mounting plate 108 at the bearing seat 107, and the outer cover mounting plate 108 has mounting screw holes. The protective outer cover 109 is fixed relative to the bearing seat 107 with the help of the outer cover mounting plate 108 through bolts and mounting screw holes, thereby avoiding the cracking of the weld and reducing the noise and vibration generated by the suspension of the protective outer cover 109.

[0044] The eccentric assembly 113 is connected to the main shaft assembly so that the main shaft assembly generates an exciting force when it is driven to rotate. In order to ensure the stability of the operation of the exciting device 1, the eccentric assembly 113 is symmetrically arranged on both sides of the bearing seat 107. Figure 1 As shown, a group of eccentric components 113 are symmetrically arranged on both sides of each bearing seat 107, and each group of eccentric components 113 is located at the same position in the circumferential direction of the main shaft assembly.

[0045] Combined with reference Figures 1 to 3 The eccentric assembly 113 includes a main eccentric block 11302, a secondary eccentric block 11303 and a connecting fastener 11304. The main eccentric block 11302 and the secondary eccentric block 11303 both include a fan-shaped body and a connecting portion, and the connecting portion can be sleeved and fixed on the first main shaft 103 or the second main shaft 111. A plurality of positioning holes are provided on the fan-shaped bodies of the main eccentric block 11302 and the secondary eccentric block 11303 along the circumferential direction. By relatively rotating to different angles along the circumferential direction of the main shaft assembly, the positioning holes of the main eccentric block 11302 and the secondary eccentric block 11303 are aligned. The connecting fastener 11304 plays the role of connecting and fixing the main eccentric block 11302 and the secondary eccentric block 11303 along the axial direction of the main shaft assembly, and at the same time, the main eccentric block 11302 and the secondary eccentric block 11303 are relatively fixed along the circumferential direction. By adjusting the alignment of the positioning holes at different positions on the fan-shaped bodies of the main eccentric block 11302 and the auxiliary eccentric block 11303, the eccentricity of the main shaft assembly can be adjusted, so that the main shaft assembly can output different exciting forces at the same rotation speed.

[0046] In the present application, the minimum angle between the main eccentric block 11302 and the secondary eccentric block 11303 in the circumferential direction is 0°, that is, the two are completely overlapped in the circumferential direction; the maximum angle between the main eccentric block 11302 and the secondary eccentric block 11303 in the circumferential direction is 150°. In the specific implementation, the adjustment of different angles between the two is achieved by adjusting the number of positioning holes on the fan-shaped body of the main eccentric block 11302 and the secondary eccentric block 11303. The fan-shaped bodies of the main eccentric block 11302 and the secondary eccentric block 11303 have differences in radius or thickness, and can provide different eccentricities for the main shaft assembly when installed in the main shaft assembly. By reasonably setting the main eccentric block 11302 and the secondary eccentric block 11303 of different specifications, adjusting the angle between the main eccentric block 11302 and the secondary eccentric block 11303, the adjustment of the eccentricity and exciting force of the main shaft assembly is achieved, which is suitable for the vibration drying requirements of different materials.

[0047] Furthermore, in order to improve the reliability of the eccentric assembly 113 fixed relative to the main shaft, positioning grooves can be set on the inner periphery of the main eccentric block 11302 and the corresponding positions of the main shaft assembly. The eccentric assembly 113 also includes a locking key 11301. When the main eccentric block 11302 and the auxiliary eccentric block 11303 are sleeved on the main shaft assembly, the locking key 11301 is inserted into the positioning grooves at the corresponding positions of the main eccentric block 11302 and the main shaft assembly, thereby improving the reliability of the connection and fixation of the main eccentric block 11302 and the auxiliary eccentric block 11303 relative to the main shaft.

[0048] The present application also provides a vibration dryer. Figure 4 and Figure 5 As shown, the vibration dryer also includes a drying container 2 and a frame 10 by applying the vibration device 1 provided in the above embodiment. The frame 10 includes a fixed bottom plate and a plurality of groups of legs connected to the fixed bottom plate; the bottom of the drying container 2 is provided with an upper support 7 corresponding to the number and position of the legs, and a spring 6 is connected between the upper support 7 and the legs, so that the drying container 2 is floatingly arranged relative to the frame 10. The vibration device 1 is fixed on the fixed bottom plate of the frame 10, and the drying container 2 is also provided with a docking flange 11. The bearing seat 107 of the vibration device 1 is docked and fixed with the docking flange 11 of the drying container 2 through the connecting flange 104 at the top, so as to realize the suspension fixation of the bearing seat 107, so as to facilitate the transmission of the vibration force generated by the rotation of the main shaft assembly to the drying container 2 through the bearing seat 107, and drive the vibration of the drying container 2 relative to the frame 10.

[0049] The setting of the drying container 2 refers to the prior art, and mainly includes a container body, a feed port 3 and a dust removal port 4 arranged at the top of the container body, an inspection door 5 arranged at one end of the container body that can be opened and closed, and a discharge port 9 arranged at the bottom of the container body. In addition, the container body is also provided with a manhole 8 for convenient entry and exit of personnel. It should be understood that the present application is mainly aimed at improving the vibration device 1, and does not limit the specific structure of the drying container 2. The drying container 2 that can meet the drying requirements of the material and can be connected to the vibration device 1 to achieve vibration under the drive of the vibration device 1 is suitable for this application.

[0050] It should be understood that the terms used in the text are only for the purpose of describing specific example embodiments, and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used in the text may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0051] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0052] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A vibration excitation device, characterized in that: It includes a driving motor, a main shaft assembly, a bearing assembly and an eccentric assembly; the driving motor is connected to and drives the main shaft assembly to rotate, the bearing assembly is provided in at least two groups and supports the main shaft assembly, and the eccentric assembly is connected to the main shaft assembly; The spindle assembly includes a first spindle and a second spindle, the first spindle and the second spindle are connected via a first coupling, and one end of the first spindle away from the first coupling is connected to the drive motor.

2. The vibration excitation device according to claim 1, characterized in that: A second coupling is provided between the driving motor and the first main shaft.

3. The vibration excitation device according to claim 2, characterized in that: The first coupling and / or the second coupling is a universal joint coupling.

4. The vibration excitation device according to claim 2, characterized in that: Vibration isolation pads are provided at both ends of the first coupling, and / or vibration isolation pads are provided at both ends of the second coupling.

5. The vibration excitation device according to any one of claims 1 to 4, characterized in that: The bearing assembly comprises a bearing seat, a bearing body and a bearing cover. The bearing seat is provided with a bearing hole and a process alignment hole which is arranged unequally with the bearing hole.

6. The vibration excitation device according to claim 5, characterized in that: The bearing seat is provided with a connecting flange at one end away from the bearing hole thereof, and a positioning block is provided on the connecting end surface of the connecting flange.

7. The vibration excitation device according to claim 5, characterized in that: It also includes a protective outer cover, the bearing seat is provided with an outer cover mounting plate, and the protective outer cover is connected to the outer cover mounting plate through bolts.

8. The vibration excitation device according to claim 5, characterized in that: The eccentric components are symmetrically arranged on both sides of the bearing seat.

9. The vibration excitation device according to claim 8, characterized in that: The eccentric assembly comprises: A main eccentric block eccentrically connected to the periphery of the main shaft assembly; A secondary eccentric block, eccentrically connected to the periphery of the main shaft assembly, and the overlap angle of the main eccentric block and the secondary eccentric block in the circumferential direction of the main shaft assembly is adjustable; The connecting fastener connects and fixes the main eccentric block and the auxiliary eccentric block.

10. A vibration dryer, characterized in that: It comprises a drying container, a frame and the excitation device according to any one of claims 1 to 9; the drying container is provided with an upper support and a docking flange, the upper support and the frame are connected by a spring, and the docking flange is fixed to the bearing assembly.

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