Stirring driving shaft swing detection mechanism of medicinal particle stirrer

Abstract

The utility model discloses a stirring drive shaft swing detection mechanism of medicinal granule blender, including detection sensor, vertical tube, connecting plate and T-shaped trough plate, the detection sensor is installed in the lower end of vertical tube, and the probe directly faces the edge of driven belt bull wheel fixedly connected with the lower end of stirring drive shaft, the upper end of vertical tube is fixedly connected with the connecting plate, and the T-shaped trough plate is fixedly connected with the connecting plate. The connecting plate is fixedly connected to the T-shaped groove plate through the T-shaped screw and the nut, the T-shaped groove plate is fixedly connected to the bottom of the supporting platform, and the neutral plane of two rows of T-shaped grooves of the T-shaped groove plate is coplanar with the stirring driving shaft. According to the utility model, the corresponding bearing clearance is reversely pushed through the large bounce of the driven belt large wheel, so that the more accurate swing monitoring of the stirring driving shaft is realized, the detection sensor is installed by adopting the vertical pipe, the cable wiring is convenient, and the T-shaped groove plate of the T-shaped groove is matched with the T-shaped screw to connect the connecting plate. The position of the detection sensor relative to the driven large belt wheel can be conveniently adjusted, and adjustment is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of fault detection technology for the stirring drive shaft of a pharmaceutical granule mixer, and specifically to a mechanism for detecting the oscillation of the stirring drive shaft of a pharmaceutical granule mixer. Background Technology

[0002] Pharmaceutical granule mixers typically consist of a mixing chamber and a sealed cover on top of the mixing chamber. The mixing chamber is fixedly connected to a support platform. Inside the mixing chamber are mixing blades, which extend from the mixing chamber via a drive shaft and are rotatably connected to a bearing support device. The lower end of the blades extends further and is fixedly connected to a driven pulley. The bearing support device is connected to the bottom of the support platform. The driven pulley is connected to a drive motor via a belt. The drive motor is mounted on a motor frame at the bottom of the support platform. Due to the large size of the equipment, the support platform allows personnel to easily access it via a ladder for feeding. The driven pulley weighs over 800 kg. The bearing support device is subjected to pressure from below... The long-term offset torque of the driven belt pulley causes severe wear on the lower tapered roller bearing inside the bearing support device, resulting in excessive bearing clearance, large runout of the agitator drive shaft, and further aggravation of bearing damage, leading to a high failure rate. During maintenance, a crane is used in conjunction with manual installation, but due to the large size of the equipment and the heavy weight of the pulley below, replacing it after a failure requires at least 3-5 days of downtime, which is time-consuming, labor-intensive, and greatly increases labor costs. The above-mentioned maintenance process is required for various faults such as bearing clearance adjustment, excessive wear, or seizure due to lack of lubrication. However, the existing equipment does not have an online monitoring device, so problems cannot be detected in time when they occur. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a stirring drive shaft oscillation detection mechanism for a pharmaceutical granule mixer, which can realize online monitoring of the oscillation of the stirring drive shaft and determine the loosening problem of the bearing.

[0004] The technical solution of this utility model is as follows: A stirring drive shaft oscillation detection mechanism for a pharmaceutical granule mixer includes a detection sensor, a vertical tube, a connecting plate, and a T-slot plate. The detection sensor is installed at the lower end of the vertical tube with its probe facing the edge of the driven belt pulley fixedly connected to the lower end of the stirring drive shaft. A connecting plate is fixedly connected to the upper end of the vertical tube. The connecting plate is fixedly connected to the T-slot plate by T-bolts and nuts. The T-slot plate is fixedly connected to the bottom of the support platform. The neutral plane of the two rows of T-slots of the T-slot plate is coplanar with the stirring drive shaft.

[0005] Furthermore, the signal line of the aforementioned detection sensor passes through the inside of the vertical tube and then exits from the outlet hole located near the top.

[0006] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model uses the movement of the driven belt pulley over a long distance to map the monitoring of the clearance of the tapered roller bearing on the lower side (changes in the clearance of the tapered roller bearing indicate looseness, which in turn leads to the movement of the stirring drive shaft). This enables more accurate monitoring because even a small movement of the stirring drive shaft can be fed back to the driven belt pulley for amplification. The large movement of the driven belt pulley is used to infer the corresponding bearing clearance, thus achieving more accurate monitoring. When the monitored data exceeds a set threshold, the reduction motor is activated, which in turn drives the worm gear to rotate the locking sleeve, thereby adjusting the clearance of the tapered roller bearing on the lower side. The detection sensor is installed in a vertical tube, which facilitates cable routing. The T-slot plate with T-screws is used to connect the connecting plate, which facilitates the adjustment of the position of the detection sensor relative to the driven pulley, making the adjustment convenient and quick. Attached Figure Description

[0007] Figure 1 A three-dimensional structural diagram of the bearing support device for a pharmaceutical granule mixer;

[0008] Figure 2 Schematic diagram of the isometric structure of the bearing support device for a pharmaceutical granulation mixer

[0009] Figure 3 This is a three-dimensional structural diagram of the bearing support device for a pharmaceutical granule mixer from another perspective.

[0010] Figure 4 This is a rear view schematic diagram of the bearing support device for a pharmaceutical granule mixer.

[0011] Figure 5 This is a right-side structural schematic diagram of the bearing support device for a pharmaceutical granule mixer.

[0012] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure of the middle CC section;

[0013] Figure 7 for Figure 4 Schematic diagram of the cross-sectional structure of the middle DD;

[0014] Figure 8 for Figure 4 Schematic diagram of the cross-sectional structure of the EE;

[0015] Figure 9 A bottom view schematic diagram of the bearing support device for a pharmaceutical granule mixer;

[0016] Figure 10 This is a schematic diagram of the swing detection mechanism.

[0017] Figure 11 This is a schematic diagram of the swing detection mechanism.

[0018] Figure 12 Schematic diagram of a bearing lubrication mechanism;

[0019] Figure 13 This is a schematic diagram of the worm gear mounting area. Detailed Implementation

[0020] Example 1: As Figure 1 and 10 As shown in Figure -11, a stirring drive shaft oscillation detection mechanism for a pharmaceutical granule mixer includes a detection sensor 1201, a vertical tube 1202, a connecting plate 1203, and a T-slot plate 1204. The detection sensor 1201 is installed at the lower end of the vertical tube 1202 with its probe facing the edge of the driven belt pulley 14 fixedly connected to the lower end of the stirring drive shaft 4. The connecting plate 1203 is fixedly connected to the upper end of the vertical tube 1202. The connecting plate 1203 is fixedly connected to the T-slot plate 1204 by T-screws 1205 and nuts 1206. The T-slot plate 1204 is fixedly connected to the bottom of the support platform 6. The neutral plane of the two rows of T-slots of the T-slot plate 1204 is coplanar with the stirring drive shaft 4. The detection mechanism is activated by a remote... The movement of the driven belt pulley is used to map the clearance of the tapered roller bearing below, enabling more precise monitoring. Even minute movements are amplified by feedback to the driven belt pulley, allowing for the inverse calculation of the bearing clearance and further precision. When the monitored data exceeds a set threshold, the geared motor is activated, driving the worm gear and locking sleeve to rotate, thus adjusting the clearance of the tapered roller bearing below. A vertical tube is used to mount the sensor, facilitating cable routing. A T-slot plate with T-screws connects to the connecting plate, allowing for easy and quick adjustment of the sensor's position relative to the driven pulley.

[0021] The signal line of the detection sensor 1201 is led out from the outlet hole 1207 located at the top of the vertical tube 1202 after passing through the inside of the vertical tube 1202. The structure is compact, avoiding messy cables and preventing interference with probe testing.

[0022] Example 2: Figure 1-13As shown, a bearing support device for a pharmaceutical granule mixer includes two tapered roller bearings 1, a bearing sleeve 2, and a locking sleeve 3. The two tapered roller bearings 1 are connected to a stirring drive shaft 4 and arranged vertically. The bearing sleeve 2 is fitted over the two tapered roller bearings 1, and its upper end is fixed to a support platform 6 via a flange 5. The locking sleeve 3 is spirally connected to the lower end of the bearing sleeve 2. The locking sleeve 3 is movably fitted over the stirring drive shaft 4, and its upper end can abut against the inner ring of the tapered roller bearing 1 on the lower side. The lower end of the locking sleeve 3 is vertically movably connected to an annular worm gear 7 that is coaxial with it. The annular worm gear 7 is movably fitted over the stirring drive shaft 4. In addition, the worm 8, which meshes with the annular worm gear 7, is horizontally rotating on the cantilever frame 9. The cantilever frame 9 is fixedly connected to the bottom of the support platform 6. The worm 8 is connected to a reduction motor 10, which is mounted on the support platform 6 via a motor frame. By adding a locking sleeve under the bearing and driving the worm gear to rotate the locking sleeve through the motor, the locking adjustment can be performed quickly. This allows for the adjustment of the clearance of the loose tapered roller bearing on the lower side without the need for manual clearance adjustment maintenance, saving time and effort. It also eliminates the need for long-term downtime or eliminates the need for downtime, allowing for quick clearance adjustment or online adjustment, which greatly improves production efficiency.

[0023] To cool the lower tapered roller bearing, a bearing lubrication mechanism 11 is installed on the side wall of the bearing sleeve 2. The lubrication mechanism 11 includes a lubrication pipe 1101, a lubrication seat 1102, a lubrication solenoid valve 1103, and an oil reservoir 1104. The oil reservoir 1104 is installed on the top outer end of the lubrication seat 1102, which is fixedly connected to the bearing sleeve 2. An oil passage 1105 is provided inside the lubrication seat 1102. The inlet end of the oil passage 1105 is connected to the outlet end of the oil reservoir 1104, and the outlet end of the oil passage 1105 is connected to the lubrication pipe 1101. The lubrication pipe 1101 extends from a through hole 110 on the side wall of the bearing sleeve 2. The 6-section extends into the lower tapered roller bearing 1 and is positioned above it with its end directly facing the cage of the tapered roller bearing 1. The oil filling solenoid valve 1103 is mounted on the oil filling seat 1102 to control the opening and closing of the oil passage 1105. By setting up a small bearing oil filling mechanism, cooling lubricating oil is placed into the oil reservoir. When cooling and lubrication are required, the solenoid valve is controlled to open the oil passage, and the oil in the oil reservoir slowly enters the oil filling pipe. The oil filling pipe slowly drips into the cage of the tapered roller bearing, and under the action of rotation, it lubricates the entire roller and cools it down. The oil filling is convenient and quick. After lubrication and cooling, the tapered roller bearing experiences slow friction and wear, resulting in a longer service life.

[0024] To better facilitate oil filling, the distance between the oil filling pipe 1101 and the cage of the tapered roller bearing on the lower side is 5-10mm. This distance ensures that the oil drips steadily into the cage. To facilitate the full dripping of oil into the cage, the oil filling pipe 1101 is arranged at an angle.

[0025] To achieve accurate lubrication, a thermocouple sensor 1107 is installed on the bearing sleeve 2. The inner section of the thermocouple sensor 1107 contacts the outer ring of the tapered roller bearing 1 on the lower side. According to the temperature change, when the set threshold is reached, the cage is lubricated. After adding the set amount of oil, the lubrication is stopped. After running for a period of time, the temperature is collected again. If the temperature is lower than the set threshold, the lubrication continues. The lubrication is stopped when the set temperature is met. This can achieve accurate lubrication and avoid over- or under-lubrication, thus achieving better lubrication control.

[0026] To monitor the clearance of tapered roller bearings, a bearing support device for a pharmaceutical granulator mixer further includes a swing detection mechanism 12. The swing detection mechanism 12 includes a detection sensor 1201, a vertical pipe 1202, a connecting plate 1203, and a T-slot plate 1204. The detection sensor 1201 is installed at the lower end of the vertical pipe 1202, with its probe facing the edge of the driven belt pulley 14 fixedly connected to the lower end of the mixing drive shaft 4. The connecting plate 1203 is fixedly connected to the upper end of the vertical pipe 1202. The connecting plate 1203 is fixedly connected to the T-slot plate 1204 by T-screws 1205 and nuts 1206. The T-slot plate 1204 is fixedly connected to the bottom of the support platform 6. The neutral plane of the two rows of T-slots of the T-slot plate 1204 is aligned with... The stirring drive shaft is coplanar. The movement of the driven belt pulley over a long distance is used to map the clearance of the tapered roller bearing below, enabling more accurate monitoring. Even small movements are amplified by feedback to the driven belt pulley, and the large movement of the driven belt pulley is used to infer the corresponding bearing clearance, thus achieving more precise monitoring. When the monitored data exceeds a set threshold, the reduction motor is activated, which drives the worm gear to rotate the locking sleeve, thereby adjusting the clearance of the tapered roller bearing below. The detection sensor is mounted in a vertical tube for easy cable routing. The T-slot plate with T-screws connects to the connecting plate, facilitating easy and quick adjustment of the sensor's position relative to the driven pulley.

[0027] The signal line of the detection sensor 1201 is led out from the outlet hole 1207 located at the top of the vertical tube 1202 after passing through the inside of the vertical tube 1202. The structure is compact, avoiding messy cables and preventing interference with probe testing.

[0028] To enable fault diagnosis, a vibration sensor 13 is also installed on the bearing sleeve 2. When the vibration data of the vibration sensor exceeds the set threshold, it is determined that the equipment is damaged and needs to be repaired.

[0029] The worm gear mechanism consisting of worm gear 7 and worm 8 adopts a self-locking worm gear mechanism. The self-locking worm gear further strengthens the locking effect and prevents the locking sleeve from loosening. The worm gear 7 is provided with a sliding keyway 701. The lower end of the locking sleeve 3 is provided with a sliding sleeve 301. The sliding sleeve 301 is provided with a protruding sliding key 302. The sliding key 302 is movably embedded in the sliding keyway 701. A thrust bearing 15 is installed on the lower side of the worm gear 7 and is kept coaxial with it. The thrust bearing 15 is mounted on an annular tray 16. The annular tray 16 is fixedly connected to the cantilever frame 9 through a tray frame 17. The annular tray 16 supports the thrust bearing, and the thrust bearing supports the worm gear, playing an auxiliary supporting role for the worm gear. The worm gear drives the locking sleeve to rotate, but the worm gear does not move up and down. The sliding sleeve at the lower end of the locking sleeve moves up and down relative to the worm gear, realizing the locking and unlocking of the locking sleeve.

[0030] Example 3: A bearing clearance adjustment method for a pharmaceutical granule mixer bearing support device is as follows: When the tapered roller bearing on the lower side wears, it causes the mixing drive shaft to jump, which in turn reflects the jump of the driven belt pulley fixedly connected to the lower end of the mixing drive shaft. When the detection sensor detects that the jump value of the driven belt pulley is greater than a set threshold, the reduction motor is started, driving the worm gear to rotate in the direction of the locking sleeve, which in turn drives the worm wheel to rotate. The worm wheel drives the locking sleeve to rotate, and the locking sleeve drives the inner ring of the lower tapered roller bearing to move inward. When the jump detected by the detection sensor is less than the set threshold, the clearance between the inner ring and the roller of the tapered roller bearing reaches the design requirements of the tapered roller bearing, and the reduction motor stops operating.

Claims

1. A stirring drive shaft oscillation detection mechanism for a pharmaceutical granule mixer, characterized in that, It comprises a detection sensor (1201), a vertical pipe (1202), a connecting plate (1203) and a T-shaped groove plate (1204), the detection sensor (1201) is fixedly connected with the lower end of the vertical pipe (1202) and the probe thereof faces the edge of the driven belt pulley (14) fixedly connected with the lower end of the stirring driving shaft (4), the upper end of the vertical pipe (1202) is fixedly connected with the connecting plate (1203), the connecting plate (1203) is fixedly connected with the T-shaped groove plate (1204) through T-shaped screws (1205) and nuts (1206), the T-shaped groove plate (1204) is fixedly connected with the bottom of the support platform (6), and the neutral planes of the two rows of T-shaped grooves of the T-shaped groove plate (1204) are coplanar with the stirring driving shaft (4).

2. The oscillation detecting mechanism for the stirring drive shaft of a granulator for pharmaceutical use according to claim 1, characterized in that The signal line of the detection sensor (1201) is led out from the wire outlet hole (1207) arranged at the top end after passing through the inside of the vertical pipe (1202).

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