Side-driven fly ash granulator

Abstract

The utility model relates to the technical field of granulation, in particular to a side-driven fly ash granulator. Comprising a screw extrusion system, the screw extrusion system comprises a screw rod, the screw extrusion system further comprises a driving motor, and the driving motor is provided with a driving shaft; the device further comprises a parallel shaft type speed reducer. The speed reducer comprises an input shaft and an output shaft which are parallel, and the connecting end of the input shaft and the connecting end of the output shaft are arranged on the two opposite sides of the speed reducer respectively. The input shaft is connected with the driving shaft through a coupler, and the output shaft is connected to the screw rod; the coupling is an elastic pin type coupling; the driving motor is prevented from being affected and damaged by vibration and the service life of the motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of granulation technology, and in particular to a fly ash granulator. Background Technology

[0002] A fly ash granulator is a device used to process fly ash generated from industrial combustion (such as fine powdery waste from coal-fired power plants and waste incineration plants) into granular materials. Its core purpose is to improve the physical properties of fly ash through physical or chemical methods, facilitating subsequent resource utilization or safe disposal.

[0003] However, fly ash granulators generate severe vibrations during operation. If a drive motor is coaxially mounted with the fly ash granulator, the vibration can easily be transmitted to the drive motor, potentially damaging the components in the drive motor and affecting its service life. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract and the title of this utility model. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution;

[0007] A side-driven fly ash granulator includes a screw extrusion system, the screw extrusion system including a screw rod and a drive motor having a drive shaft;

[0008] It also includes parallel shaft reducers;

[0009] The reducer includes a parallel input shaft and an output shaft, with the connection ends of the input shaft and the connection ends of the output shaft respectively located on opposite sides of the reducer.

[0010] The input shaft is connected to the drive shaft via a coupling, and the output shaft is connected to the screw rod;

[0011] The coupling is a flexible pin type coupling.

[0012] The above design, firstly, by setting a parallel shaft reducer, avoids the vibration of the screw extrusion system being directly transmitted to the drive motor through side drive, thereby improving equipment reliability, extending lifespan, and reducing maintenance costs; secondly, it adopts a flexible pin type coupling, a common type of flexible coupling, which transmits torque through flexible pins (such as rubber, polyurethane, or nylon materials), while compensating for axial, radial, and angular misalignments, absorbing vibration and impact, cutting off the vibration transmission path, preventing the drive motor from being damaged by vibration, and extending the motor's service life.

[0013] Preferably, the system further includes a vibration damping system, which comprises a reducer connecting plate, a spiral connecting plate, a damping spring, and connecting bolts. The reducer connecting plate is sleeved on the output shaft, and the spiral connecting plate is sleeved on the spiral rod. One end of the damping spring abuts against the spiral connecting plate, and the other end of the damping spring abuts against the reducer connecting plate. The connecting bolts surround the damping springs, with one end connected to the spiral connecting plate and the other end connected to the reducer connecting plate. The central axis of the output shaft coincides with the central axis of the spiral rod, but there is a gap between the end of the output shaft and the end of the spiral rod. By setting the damping springs, the vibration transmission between the spiral rod and the output shaft can be effectively reduced, reducing fretting wear caused by gear transmission in the reducer and ensuring the service life of the reducer. By setting the reducer connecting plate and the spiral connecting plate, the torque of the reducer output shaft can be transmitted to the spiral rod after the reducer connecting plate and the spiral connecting plate are connected by connecting bolts, ensuring that the spiral rod of the spiral extrusion system can effectively receive transmission.

[0014] Preferably, both the reducer connecting plate and the spiral connecting plate are flared, including a larger diameter end and a smaller diameter end. The smaller diameter end of the reducer connecting plate is welded to the end face of the output shaft, and the smaller diameter end of the spiral connecting plate is welded to the end face of the spiral rod. By positioning the two flared ends opposite each other, the change in the inner diameter of the flared ends limits the position of the damping spring.

[0015] Preferably, there are at least six connecting bolts, which are arranged at equal intervals around the shock-absorbing spring. At least six connecting bolts can transmit torque evenly, resulting in smoother and more efficient force transmission.

[0016] Preferably, the distance between the input shaft and the output shaft is not less than 400 mm; the mating end faces of the drive shaft and the input shaft have a gap of at least 25 mm. The distance between the input shaft and the output shaft ensures sufficient distance for vibration isolation between the two shafts, and the gap between the mating end faces of the drive shaft and the input shaft can cut off the transmission of vibration.

[0017] Preferably, the screw extrusion system further includes a screw extrusion housing; the screw extrusion housing and the reducer housing are connected by a connecting cylinder; a rubber pad is provided between the connecting cylinder and the reducer housing. The connecting cylinder connects the screw extrusion housing and the reducer housing into one unit, improving the stability of the screw extrusion housing, distributing part of the radial load, preventing the reducer input shaft from directly bearing the vibration of the screw extrusion housing, and the rubber pad can also effectively absorb vibration and prevent direct transmission of vibration.

[0018] Preferably, the spiral connecting disc and the reducer connecting disc are disposed within the inner cavity of the connecting cylinder. This reduces the amount of fly ash falling into the damping spring between the spiral connecting disc and the reducer connecting disc, thus extending the service life of the damping spring.

[0019] Preferably, metal-rubber composite pads are provided under the screw conveyor housing, reducer, and drive motor. These metal-rubber composite pads can absorb vibration and improve the operational stability of the fly ash granulator.

[0020] A PTFE (polytetrafluoroethylene) pad is also provided below the drive motor, positioned between the metal-rubber composite pad and the drive motor. The pad reduces the pressure exerted by the drive motor on the metal-rubber composite pad, preventing damage. The PTFE pad also offers better wear resistance, and its low coefficient of friction further reduces friction and wear on the metal-rubber composite pad. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0022] Figure 1 This is a schematic diagram of the external side structure of the side-driven fly ash granulator of this utility model;

[0023] Figure 2 This is a schematic diagram of the external structure of the side-driven fly ash granulator of this utility model from another side. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in less than one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0028] Example 1

[0029] refer to Figure 1 and Figure 2 A side-driven fly ash granulator includes a screw extrusion system, which includes a screw rod and a drive motor with a drive shaft.

[0030] It also includes a parallel shaft type reducer 2;

[0031] The reducer 2 includes a parallel input shaft 21 and an output shaft 22, with the connecting ends of the input shaft 21 and the output shaft 22 respectively located on opposite sides of the reducer 2;

[0032] The input shaft 21 is connected to the drive shaft via the coupling 4, and the output shaft 22 is connected to the screw rod 1.

[0033] It also includes a coupling 4, which is a flexible pin type coupling 4, and the coupling 4 connects the drive shaft of the drive motor 3 and the input shaft 21 of the reducer 2.

[0034] The above design, firstly, by setting up a parallel-shaft reducer 2, avoids the direct transmission of vibration from the screw extrusion system to the drive motor 3 through side drive. This improves equipment reliability, extends lifespan, and reduces maintenance costs. A flexible pin type coupling 4 is used; the flexible pin coupling 4 is a common type of flexible coupling. Torque is transmitted through flexible pins (such as rubber, polyurethane, or nylon), while compensating for axial, radial, and angular misalignments. It absorbs vibration and shock, cuts off the vibration transmission path, prevents damage to the drive motor 3 from vibration, and extends the motor's service life.

[0035] The system also includes a vibration damping system comprising a reducer connecting plate 101, a spiral connecting plate 102, a damping spring 6, and a connecting bolt 103. The reducer connecting plate 101 is sleeved on the output shaft, and the spiral connecting plate 102 is sleeved on the spiral rod. One end of the damping spring 6 abuts against the spiral connecting plate 102, and the other end abuts against the reducer connecting plate 101. The connecting bolt 103 surrounds the damping spring 6, with one end connected to the spiral connecting plate 102 and the other end connected to the reducer connecting plate 101. The central axis of the output shaft coincides with the central axis of the spiral rod, but a gap exists between the end of the output shaft and the end of the spiral rod. By incorporating the damping spring 6, vibration transmission between the spiral rod and the output shaft can be effectively reduced, minimizing fretting wear in the gear transmission of the reducer and ensuring the service life of the reducer. By setting up a reducer connecting plate 101 and a spiral connecting plate 102, and connecting the reducer connecting plate 101 and the spiral connecting plate 102 with connecting bolts 103, the torque of the reducer output shaft can be transmitted to the spiral rod, ensuring that the spiral rod of the spiral extrusion system can effectively receive the transmission.

[0036] Both the reducer connecting plate 101 and the spiral connecting plate 102 are flared, including a larger diameter end and a smaller diameter end. The smaller diameter end of the reducer connecting plate 101 is welded to the end face of the output shaft, and the smaller diameter end of the spiral connecting plate 102 is welded to the end face of the spiral rod. By positioning the two flared ends opposite each other, the change in the inner diameter of the flared ends restricts the position of the shock-absorbing spring 6.

[0037] There are at least six connecting bolts 103, which are arranged around the shock-absorbing spring 6. The presence of at least six connecting bolts 103 ensures that torque is transmitted evenly, resulting in smoother and more efficient force transmission.

[0038] The distance between the input shaft 21 and the output shaft 22 is not less than 400 mm; the drive shaft and the input shaft 21 have a gap of at least 25 mm. The gap between the input shaft 21 and the output shaft 22 ensures that there is sufficient distance to isolate vibration between the two shafts, and the gap between the mating end faces of the drive shaft and the input shaft 21 can cut off the transmission of vibration.

[0039] During operation, the fly ash granulator experiences severe vibrations from the screw extrusion system compressing dust particles. Side drive prevents this vibration from being directly transmitted to the drive motor 3. A flexible pin coupling 4 is used; this type of flexible coupling transmits torque through the flexible pins, compensates for axial, radial, and angular misalignments, absorbs vibration and impact, cuts off the vibration transmission path, improves equipment reliability, extends lifespan, and reduces maintenance costs. A damping spring 6 effectively reduces vibration transmission between the screw rod 1 and the output shaft 22, minimizing fretting wear in the gear transmission of the reducer 2. By setting up a reducer connecting plate 101 and a screw connecting plate 102, connected by connecting bolts 103, the torque of the reducer 2's output shaft 22 can be transmitted to the screw rod 1, ensuring that the screw rod 1 of the screw extrusion system can effectively receive transmission, thereby improving the fly ash granulator's reliability, extending its lifespan, and reducing maintenance costs.

[0040] Example 2

[0041] refer to Figure 1 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0042] The screw extrusion system also includes a screw extrusion housing 5; the screw extrusion housing 5 and the reducer housing are connected by a connecting cylinder 7; a rubber gasket is provided between the connecting cylinder 7 and the reducer housing; a rubber gasket is also provided between the connecting cylinder 7 and the reducer housing. The connecting cylinder 7 is located between the screw extrusion housing 5 and the reducer housing. The connecting cylinder 7 connects the screw extrusion housing 5 and the reducer housing into one unit, improving the stability of the screw extrusion housing 5. As a transition structure between the screw extrusion housing 5 and the reducer housing, the connecting cylinder 7 can share part of the radial load, preventing the reducer input shaft 21 from directly bearing the vibration of the screw extrusion housing 5. The rubber gasket can also effectively absorb vibration, preventing direct transmission of vibration.

[0043] The spiral connecting disc 102 and the reducer connecting disc 101 are disposed within the inner cavity of the connecting cylinder 7. This reduces fly ash falling onto the damping spring 6, extending the service life of the damping spring 6.

[0044] It also includes a base 8, with the screw conveyor housing 5, reducer 2, and drive motor 3 positioned above the base 8; a metal-rubber composite pad 9 is installed on the base 8. Metal-rubber composite pads 9 are also installed below the screw conveyor housing 5, reducer 2, and drive motor 3. The base 8 improves the operational stability of the screw conveyor housing 5, reducer 2, and drive motor 3, while the metal-rubber composite pads 9 absorb vibration, further enhancing the operational stability of the fly ash granulator.

[0045] A PTFE pad 10 is also provided below the drive motor 3, positioned between the metal-rubber composite pad 9 and the drive motor 3. The PTFE pad 10 reduces the pressure of the drive motor 3 on the metal-rubber composite pad 9, preventing the metal-rubber composite pad 9 from being damaged. The PTFE pad 10 has better wear resistance, and the low coefficient of friction of PTFE material further reduces friction and wear on the metal-rubber composite pad 9.

[0046] In use, the connecting cylinder 7 connects the screw conveyor housing 5 and the reducer housing 2 into one unit, improving the stability of the screw conveyor housing 5. As a transitional structure between the screw conveyor housing 5 and the reducer housing 2, the connecting cylinder 7 can share some of the radial load, preventing the input shaft 21 of the reducer 2 from directly bearing the vibration of the screw conveyor housing 5. The rubber pad also effectively absorbs vibration, preventing direct transmission. The damping spring 6 is located inside the connecting cylinder 7, reducing fly ash falling onto the damping spring 6 and extending its service life. The base 8 improves the operational stability of the screw conveyor housing 5, reducer 2, and drive motor 3. The metal-rubber composite pad 9 absorbs vibration, improving the operational stability of the fly ash granulator. The pad block 10 reduces the pressure of the drive motor 3 on the metal-rubber composite pad 9, preventing it from being damaged. The PTFE pad block has better wear resistance.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A side-driven fly ash granulator, comprising a screw extrusion system, the screw extrusion system including a screw rod and a drive motor having a drive shaft, characterized in that: It also includes parallel shaft reducers; The reducer includes a parallel input shaft and an output shaft, with the connection ends of the input shaft and the connection ends of the output shaft respectively located on opposite sides of the reducer. The input shaft is connected to the drive shaft via a coupling, and the output shaft is connected to the screw rod; The coupling is a flexible pin type coupling.

2. The side-driven fly ash granulator according to claim 1, characterized in that: It also includes a shock absorption system, which includes a reducer connecting plate, a spiral connecting plate, a shock absorption spring, and connecting bolts; The output shaft is fitted with the reducer connecting plate, the spiral rod is fitted with the spiral connecting plate, one end of the shock-absorbing spring abuts against the spiral connecting plate, and the other end of the shock-absorbing spring abuts against the reducer connecting plate; The connecting bolt surrounds the shock-absorbing spring, and one end of the connecting bolt is connected to the spiral connecting disc, while the other end of the connecting bolt is connected to the reducer connecting disc. The central axis of the output shaft coincides with the central axis of the screw rod, but there is a gap between the end of the output shaft and the end of the screw rod.

3. The side-driven fly ash granulator according to claim 2, characterized in that: Both the reducer connecting plate and the spiral connecting plate are flared, including a large-diameter end and a small-diameter end. The small-diameter end of the reducer connecting plate is welded to the end face of the output shaft, and the small-diameter end of the spiral connecting plate is welded to the end face of the spiral rod.

4. The side-driven fly ash granulator according to claim 2, characterized in that: There are at least six connecting bolts, which are arranged at equal intervals around the shock-absorbing spring.

5. The side-driven fly ash granulator according to claim 1, characterized in that: The distance between the input shaft and the output shaft shall not be less than 400mm; There is a gap of at least 25 mm between the mating end faces of the drive shaft and the input shaft.

6. The side-driven fly ash granulator according to claim 1, characterized in that: The spiral extrusion system also includes a spiral extrusion casing; The casing of the screw conveyor and the casing of the reducer are connected by a connecting cylinder; A rubber gasket is installed between the connecting cylinder and the housing of the reducer.

7. The side-driven fly ash granulator according to claim 6, characterized in that: The spiral connecting disc and the reducer connecting disc are disposed in the inner cavity of the connecting cylinder.

8. The side-driven fly ash granulator according to claim 6, characterized in that: Metal-rubber composite pads are provided under the screw conveyor housing, reducer, and drive motor.

9. The side-driven fly ash granulator according to claim 8, characterized in that: A polytetrafluoroethylene (PTFE) pad is also provided below the drive motor, and the pad is placed between the metal-rubber composite pad and the drive motor.

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