Unloader with sealed stall switch

Abstract

The utility model relates to an unloader with a sealed stall switch, which comprises a shell and a rotating shaft movably arranged in the middle of the shell in a penetrating manner, an impeller is annularly arranged on the periphery of the rotating shaft, support frames are arranged on two sides of the shell, the rotating shaft is arranged on the support frames in a penetrating manner, a rotating bearing is arranged at the end of the rotating shaft, and transparent cover plates are arranged on the support frames through fixing structures. The end of the rotating shaft is arranged in the transparent cover plate and provided with a detection piece for displaying the current state of the rotating shaft, a stall switch for detecting the current rotating speed of the rotating shaft is arranged in the transparent cover plate, and a cable gland is arranged on the transparent cover plate in a penetrating mode and electrically connected with the stall switch. An operator can see the current state in real time through the arrangement of the transparent cover plate and the detection piece, meanwhile, the stall switch for detecting the current rotating speed of the rotating shaft is arranged in the transparent cover plate, the operator can detect the rotating speed abnormity of the rotating shaft in the background, the reliability and stability of the unloader are overall improved, and faults are reduced.

Description

Technical Field

[0001] This utility model relates to the field of rotary valve technology, specifically to a rotary valve with a sealed stall switch. Background Technology

[0002] The pneumatic conveying unloader is a key piece of equipment in a material conveying system, used to accurately and efficiently unload materials transported by pneumatic conveying from closed pipelines or conveyor lines to a designated location. It typically consists of an unloading valve and a control system. In its working principle, when the airflow carrying material reaches the unloader, the internal air pressure changes, causing the unloading valve to open. The material is discharged under the force of gravity and the thrust of the remaining airflow, while the airflow exits the system through the exhaust port. It features good sealing performance, fast unloading speed, and precise control of material flow rate and direction. It can adapt to the conveying and unloading needs of various powdery and granular materials, playing a vital role in pneumatic conveying processes in many industries such as chemical, building materials, and food, effectively ensuring the continuity and stability of the production process.

[0003] Publication number CN220115685U discloses a pneumatic conveying airlock unloader, including an unloader body. The bottom of the unloader body is connected to a discharge pipe, and both sides of the discharge pipe are fixedly connected to a bearing plate. A housing is fixedly connected to the top of the bearing plate. This invention uses a motor to drive a rotating rod, which in turn drives a main gear, which in turn drives a threaded rod. The threaded rod then moves a threaded sleeve to one side, which in turn moves a vertical plate to one side, and the vertical plate moves an adjusting plate to one side. The movement stops when the device reaches a designated position, thus adjusting the discharge speed. However, this technology cannot detect the motor's operating status. During unloader operation, malfunctions often cause the motor to continue running while the shaft stops. Therefore, a unloader capable of detecting the shaft's rotation status is needed. This technology still has room for improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a discharger with a sealed stall switch, addressing the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a discharge device with a sealed stall switch, comprising a housing and a rotating shaft movably passing through the middle of the housing, with an impeller arranged around the outer periphery of the rotating shaft. The device is characterized in that: support frames are provided on both sides of the housing, the rotating shaft passes through the support frames, a rotating bearing is provided at the end of the rotating shaft, a transparent cover plate is provided on the support frames via a fixed structure, the end of the rotating shaft is placed inside the transparent cover plate, a detection plate for displaying the current rotating shaft status is provided at the end of the rotating shaft, a stall switch for detecting the current rotating shaft speed is provided inside the transparent cover plate, and a gland is provided through the transparent cover plate, the gland being electrically connected to the stall switch.

[0006] By adopting the above technical solution, fixed seats for installing transparent covers are provided on both sides of the outer shell. The rotating shaft is located inside the transparent cover and is equipped with a detection plate. The operator can see the current status in real time through the transparent cover and the detection plate. At the same time, a stall switch for detecting the current rotation speed of the rotating shaft is provided inside the transparent cover. The operator can detect abnormal rotation speed of the rotating shaft from the background. The gland head is electrically connected and well sealed. Overall, the reliability, safety and maintainability of the unloader are improved, the occurrence of failures is reduced and the production efficiency is improved.

[0007] The aforementioned unloader with a sealed stall switch can be further configured such that: the fixing structure includes a first fixing seat disposed between the rotating bearing and the support seat, the first fixing seat is sleeved on the rotating shaft, the outer periphery of the first fixing seat is provided with a fixing end, the transparent cover plate is provided with a fixing plate at one end facing the first fixing seat, and the fixing plate and the fixing end are connected by bolts.

[0008] The above technical solution involves a first fixed seat fitted onto the rotating shaft and positioned between the rotating bearing and the support seat. It is connected to the fixed end by bolts through a fixed plate. This design facilitates installation while reducing shaking and offset during shaft operation, ensuring stable shaft rotation and guaranteeing the smoothness and accuracy of material unloading.

[0009] The aforementioned unloader with a sealed stall switch can be further configured such that: the fixed end and the first fixed seat form an embedded groove for the internal installation of the rotating bearing; the fixed plate is provided with a positioning block on the side facing the rotating bearing; and the positioning block is placed inside the embedded groove and abuts against the rotating bearing.

[0010] By adopting the above technical solution, the embedded groove provides an installation position for the rotating bearing, effectively preventing the rotating bearing from shifting or shaking during operation, ensuring that the shaft can rotate stably. The positioning block facilitates the quick positioning and installation of the transparent cover plate. At the same time, the contact between the positioning block and the rotating bearing ensures that the transparent cover plate and the first fixed seat are tightly fitted, effectively preventing external impurities from entering and protecting internal components such as the detection plate, stall switch, and gland head from contamination and damage, greatly improving the reliability and stability of the equipment operation.

[0011] The aforementioned unloader with a sealed stall switch can be further configured such that: flange fixing plates are provided on both sides of the housing, and the support frame is fixedly connected to the housing through the flange fixing plates.

[0012] By adopting the above technical solution, the flange fixing plate enables the support frame to be firmly installed on the shell, effectively preventing the support frame from shifting or loosening during equipment operation. The flange fixing plate also facilitates the installation and disassembly of the support frame, reducing maintenance difficulty and cost, and improving the overall maintainability of the equipment.

[0013] The aforementioned unloader with a sealed stall switch can be further configured as follows: the support base includes a fixing foot axially arranged on the flange fixing plate, the fixing foot being obliquely arranged towards the center with the rotating shaft as the center, the first fixing seat being arranged between the fixing feet on either side, the housing having a second fixing seat between the fixing feet on the side away from the first fixing seat, the second fixing seat having a vertical motor frame, and a reduction motor being axially arranged on one side of the vertical motor frame.

[0014] By adopting the above technical solution, the fixed feet are obliquely set with the rotating shaft as the center to improve the stability of the connection. The geared motor is axially mounted on the fixed feet through the vertical motor frame. This not only makes the installation position of the motor more flexible, but also helps the motor to dissipate heat and reduce vibration transmission, further improving the stability of the equipment.

[0015] The aforementioned unloader with a sealed stall switch can be further configured such that: an inlet is provided at the upper end of the housing, an outlet is provided at the end of the housing away from the inlet, and a material trough for rotating and transporting materials is formed between the impellers.

[0016] The above-mentioned technical solution facilitates the transportation of materials by having the upper and lower inlet and outlet distributed at the top and bottom. At the same time, the material trough formed between the impellers can rotate and transport materials, which can efficiently convey materials from the inlet through the middle of the shell to the outlet, effectively improving material processing efficiency and reducing dwell time.

[0017] The beneficial effects of this utility model are as follows: The rotating shaft is located inside the transparent cover plate and is equipped with a detection plate. The operator can see the current status in real time through the transparent cover plate and the detection plate. At the same time, the transparent cover plate is equipped with a stall switch to detect the current rotation speed of the rotating shaft. The operator can detect abnormal rotation speed of the rotating shaft from the background. Overall, the reliability and stability of the unloader are improved, and the occurrence of failures is reduced. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an enlarged view of point A in this utility model;

[0020] Figure 3 This is a side view of the structure of this utility model;

[0021] 1-Housing, 2-Shaft, 3-Impeller, 4-Support frame, 5-Rotating bearing, 6-Transparent cover, 7-Detection plate, 8-Stop switch, 9-Gland head, 10-First fixed seat, 11-Fixed end, 12-Fixed plate, 13-Bolt, 14-Inset groove, 15-Positioning block, 16-Flange fixing plate, 17-Fixed foot, 18-Second fixed seat, 19-Vertical motor frame, 20-Gear motor, 21-Inlet, 22-Outlet, 23-Material trough. Detailed Implementation

[0022] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0023] like Figure 1-3The present invention provides the following technical solution: a unloader with a sealed stall switch, comprising a housing 1 and a rotating shaft 2 movably passing through the middle of the housing 1. An impeller 3 is arranged around the outer periphery of the rotating shaft 2. Support frames 4 are arranged on both sides of the housing 1, and the rotating shaft 2 passes through the support frames 4. A rotating bearing 5 is provided at the end of the rotating shaft 2. A transparent cover plate 6 is provided on the support frame 4 through a fixed structure. The end of the rotating shaft 2 is placed inside the transparent cover plate 6. A detection piece 7 is provided at the end of the rotating shaft 2 to display the current status of the rotating shaft 2. A stall switch 8 for detecting the current rotation speed of the rotating shaft 2 is provided inside the transparent cover plate 6. A gland 9 is provided through the transparent cover plate 6, and the gland 9 is electrically connected to the stall switch 8. The connection includes mounting bases on both sides of the outer casing for installing the transparent cover plate 6. The rotating shaft 2 is located inside the transparent cover plate 6 and has a detection plate 7. Operators can see the current status in real time through the transparent cover plate 6 and the detection plate 7. Simultaneously, the transparent cover plate 6 contains a stall switch 8 to detect the current rotational speed of the rotating shaft 2, allowing staff to detect abnormal rotational speeds of the shaft 2 from the background. The gland head 9 provides electrical connection and good sealing, improving the overall reliability, safety, and maintainability of the unloader, reducing malfunctions, and increasing production efficiency. The fixing structure includes a first fixing base 10 located between the rotating bearing 5 and the support base, with 10 sets of first fixing bases. Located on the rotating shaft 2, the first fixed seat 10 has a fixed end 11 on its outer periphery. A fixed plate 12 is provided on the end of the transparent cover 6 facing the first fixed seat 10. The fixed plate 12 is connected to the fixed end 11 by bolts 13. The first fixed seat 10 is sleeved on the rotating shaft 2 and located between the rotating bearing 5 and the support seat. The fixed plate 12 is connected to the fixed end 11 by bolts 13. This design facilitates installation while reducing shaking and offset during the operation of the rotating shaft 2, ensuring stable rotation of the rotating shaft 2 and guaranteeing the smoothness and accuracy of the material unloading process. The fixed end 11 and the first fixed seat 10 form an embedded groove 14 for the rotating bearing 5 to be installed internally. The fixed plate 12 faces... A positioning block 15 is provided on one side of the rotating bearing 5. The positioning block 15 is placed in the recess and abuts against the rotating bearing 5. The recessed groove 14 provides an installation position for the rotating bearing 5, effectively preventing the rotating bearing 5 from shifting or shaking during operation, ensuring that the rotating shaft 2 can rotate stably. The positioning block 15 facilitates the quick positioning and installation of the transparent cover plate 6. At the same time, the abutment between the positioning block 15 and the rotating bearing 5 ensures that the transparent cover plate 6 and the first fixed seat 10 are tightly fitted, effectively preventing external impurities from entering and protecting internal components such as the detection plate 7, stall switch 8, and gland head 9 from contamination and damage, greatly improving the reliability and stability of the equipment operation.

[0024] like Figure 1-3The present invention provides the following technical solution: a unloader with a sealed stall switch, wherein flange fixing plates 16 are provided on both sides of the housing 1, and the support frame 4 is fixedly connected to the housing 1 through the flange fixing plates 16. The flange fixing plates 16 enable the support frame 4 to be firmly installed on the housing 1, effectively preventing the support frame 4 from shifting or loosening during equipment operation. The flange fixing plates 16 also facilitate the installation and disassembly of the support frame 4, reducing maintenance difficulty and cost, and improving the overall maintainability of the equipment. The support base includes fixing feet 17 axially arranged on the flange fixing plate 12. The fixing feet 17 are obliquely arranged towards the center with the rotating shaft 2 as the center. The first fixing seat 10 is arranged between the fixing feet 17 on either side. A second fixing seat 18 is provided between the fixing feet 17 on the side of the housing 1 away from the first fixing seat 10. The second fixing seat 18 is provided with A vertical motor frame 19 is provided, with a reduction motor 20 axially mounted on one side. A fixed foot 17 is obliquely positioned around the rotating shaft 2 to improve connection stability. The reduction motor 20 is axially mounted on the fixed foot 17 via the vertical motor frame 19, which not only makes the motor installation position more flexible but also facilitates motor heat dissipation and reduces vibration transmission, further improving the stability of the equipment. An inlet 21 is provided at the upper end of the housing 1, and an outlet 22 is provided at the end of the housing 1 away from the inlet 21. A material trough 23 for rotating and transporting materials is formed between the impellers 3. The upper and lower distributed inlet 21 and outlet 22 facilitate material transportation. At the same time, the material trough 23 formed between the impellers 3 can rotate and transport materials, efficiently conveying materials from the inlet 21 through the middle of the housing 1 to the outlet 22, effectively improving material processing efficiency and reducing dwell time.

[0025] The beneficial effects of this utility model are as follows: The rotating shaft 2 is located inside the transparent cover plate 6 and is equipped with a detection plate 7. The operator can see the current status in real time through the transparent cover plate 6 and the detection plate 7. At the same time, the transparent cover plate 6 is equipped with a stall switch 8 to detect the current rotation speed of the rotating shaft 2. The operator can detect abnormal rotation speed of the rotating shaft 2 in the background. Overall, the reliability and stability of the unloader are improved, and the occurrence of failures is reduced.

Claims

1. A discharger with a sealed shape stall switch, comprising a casing and a rotating shaft movably penetrating the middle of the casing, and a impeller ringed on the outer periphery of the rotating shaft, characterized in that: The shell is provided with a support frame on both sides, the rotating shaft is arranged in the support frame, the rotating shaft is provided with a rotating bearing at the end, the support frame is provided with a transparent cover plate through a fixing structure, the end of the rotating shaft is arranged in the transparent cover plate, the end of the rotating shaft is provided with a detection sheet for displaying the current state of the rotating shaft, the transparent cover plate is provided with a stall switch for detecting the current rotating speed of the rotating shaft, the transparent cover plate is provided with a Luer head, and the Luer head is electrically connected with the stall switch.

2. A seal trip unloader according to claim 1 wherein: The fixing structure comprises a first fixing seat arranged between the rotating bearing and the support frame, the first fixing seat is sleeved on the rotating shaft, the first fixing seat is provided with a fixed end on the outer periphery, the transparent cover plate is provided with a fixed plate on one end of the first fixing seat, and the fixed plate is connected with the fixed end through bolts.

3. A seal trip unloader according to claim 2 wherein: The fixed end and the first fixing seat form an embedded groove for embedding the rotating bearing, the fixed plate is provided with a positioning block on one side of the rotating bearing, and the positioning block is arranged in the embedded groove and abuts against the rotating bearing.

4. A seal-shaped stall switch unloader according to any one of claims 2-3, characterized in that: The shell is provided with a flange fixing disc on both sides, and the support frame is fixedly connected with the shell through the flange fixing disc.

5. A seal trip unloader according to claim 4 wherein: The support frame comprises a fixing foot arranged axially on the flange fixing disc, the fixing foot is arranged obliquely to the center of the rotating shaft, the first fixing seat is arranged between the fixing feet on any one side, the fixing feet on the side away from the first fixing seat of the shell are provided with a second fixing seat, the second fixing seat is provided with a vertical motor frame, and the vertical motor frame is axially provided with a speed reducer motor on one side.

6. A seal trip unloader according to claim 1 wherein: The shell is provided with an inlet on the upper end, the shell is provided with an outlet on the side away from the inlet, and the impeller forms a material groove for rotating and transporting materials between the impellers.

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