Fault alarm device for coupling of slurry stirring tank

Abstract

The utility model relates to a slurry stirring tank coupler fault alarm device which comprises a stirring motor, the stirring motor is supported by a motor support, the bottom surface of the stirring motor is connected with a speed reducer, the bottom surface of the speed reducer is connected with an output shaft, the side wall of the output shaft is provided with a coupler, and the side wall of the coupler is provided with a coupler protruding rod. And a travel switch is mounted on the motor bracket. The travel switch is electrically connected with a time relay, and the time relay is electrically connected with an alarm. The slurry stirring tank has the beneficial effects that the structural design is more reasonable, the processing and manufacturing cost is low, the operation is convenient and fast, the use is safe and reliable, and when the stirring blades of the slurry stirring tank stop rotating, an alarm is given in time to remind an operator to process, so that the risk of accidents of the slurry stirring tank is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fault alarm devices, and particularly relates to a coupling fault alarm device for a slurry stirring tank. Background Art

[0002] In the autoclaved aerated concrete block production line, due to the failure to detect in time after the slurry stirring stops running, the slurry stirring has occurred multiple times of material precipitation and hardening. After the material hardening occurs, due to the limited space in the stirring tank, mechanical cleaning of the agglomerated material cannot be used, and only manual cleaning can be adopted. During the treatment, quicklime will continuously release heat, the working environment of the personnel is harsh, and the situation of lime burning the skin of the personnel often occurs during the operation. Moreover, the inside of the stirring tank belongs to a confined space operation with a relatively high risk; due to the heat release of quicklime, it will accelerate the setting speed of cement and fly ash, bringing great difficulties to the cleaning; during the normal production operation of the slurry stirring tank in the autoclaved aerated concrete block production line, since the central control computer can only monitor the state of the running motor and cannot monitor the operation of the stirring blades of the stirring tank, once the stirring blades of the stirring tank stop rotating, the solid materials will quickly precipitate and solidify, causing the slurry tank to harden and become unusable, seriously affecting the production order.

[0003] Equipment failures for a long time and temporary shutdowns for other reasons are extremely likely to cause the slurry tank to harden and become unusable. The aerated slurry mainly consists of water, fly ash, cement, quicklime, desulfurized gypsum, and aluminum paste. After the above raw materials are made into slurry, they have strong adhesion and coagulate on the stirring blades of the stirring tank. The following problems will occur after coagulating on the stirring blades:

[0004] 1) After the material hardening occurs, due to the limited space in the stirring tank, mechanical cleaning of the agglomerated material cannot be used, and only manual cleaning can be adopted. During the treatment, quicklime will continuously release heat, resulting in a harsh working environment for the operators. The situation of lime burning the skin of the operators often occurs during the operation. Moreover, the inside of the stirring tank belongs to a confined space operation with a relatively high risk.

[0005] 2) Due to the heat release of quicklime, it will accelerate the setting speed of cement and fly ash, bringing great difficulties to the cleaning. The cleaning time is about 8 - 10 hours, seriously affecting the normal production order.

[0006] 3) The agglomerated material cleaned out can only be treated as industrial waste, resulting in a serious waste of raw materials.

[0007] Therefore, a device is needed to solve the above existing technical problems. Content of the Utility Model

[0008] The purpose of the present utility model is to provide a slurry stirring tank coupling fault alarm device with a more reasonable structural design, low processing and manufacturing cost, convenient operation, safe and reliable use, which can timely detect when the stirring blade of the slurry stirring tank stops rotating, give an alarm in time, remind the operator to handle it, and reduce the risk of accidents occurring in the slurry stirring tank.

[0009] A slurry stirring tank coupling fault alarm device of the present utility model includes a stirring motor supported by a motor bracket. The bottom surface of the stirring motor is connected with a speed reducer, the bottom surface of the speed reducer is connected with an output shaft, a coupling is installed on the side wall surface of the output shaft, a coupling convex rod is installed on the side wall surface of the coupling, and a travel switch is installed on the motor bracket.

[0010] The travel switch is electrically connected to a time relay, and the time relay is electrically connected to an alarm.

[0011] A coupling convex rod is installed on the side wall surface of the coupling. When the slurry stirring tank is running, the stirring motor drives the speed reducer, the output shaft and the coupling to perform a rotary motion. Whenever the coupling rotates one circle, the coupling convex rod arranged on the side wall of the coupling will touch the travel switch, forming an intermittent motion. The coupling drives the stirring blade to uniformly stir the slurry in the slurry stirring tank. The travel switch will feedback an electrical signal to the time relay every 2.4 seconds. When a fault occurs in the coupling of the slurry stirring tank, the stirring blade stops working and the rotary motion stops. Therefore, the coupling convex rod stops touching the travel switch. When the time exceeds 5 seconds, the travel switch can transmit the feedback signal to the time relay, and the time relay controls the alarm to give an alarm, which can timely transmit the alarm signal to the operator. After hearing the alarm, the operator can process the slurry in the slurry stirring tank for the first time, that is, clean it when the slurry is still in a flowable state, which can avoid the operator entering the interior of the slurry stirring tank body for cleaning, greatly shorten the processing time, effectively reduce the labor intensity of the operator, reduce the operation safety risk, and avoid various risks caused by the slurry hardening due to no one finding after the stirring stops rotating.

[0012] The coupling convex rod includes a first fixing rod, a spring, a second fixing rod, a protective steel plate, and an anti-collision rubber protrusion. The first fixing rod is fixedly installed on the side wall of the coupling. One end of the spring is fixedly connected to the side wall surface of the first fixing rod, the other end of the spring is fixedly connected to a second fixing rod, the side wall surface of the second fixing rod is fixedly connected to a protective steel plate, and the side wall surface of the protective steel plate is fixedly connected to an anti-collision rubber protrusion.

[0013] The first fixed rod provided can fixedly connect the entire coupling protruding rod to the side wall surface of the coupling, with reliable fixation. The spring provided can play a buffering role when the anti-collision rubber protrusion touches the travel switch, preventing damage caused by the long-term collision of the coupling protruding rod against the travel switch, affecting the alarm effect, extending the service life, saving the input cost. The protective steel plate provided can also play a protective role against the long-term collision of the coupling protruding rod, enhancing the strength of the coupling protruding rod; the anti-collision rubber protrusion provided can achieve the long-term touch of the coupling protruding rod with the travel switch, realizing flexible collision, avoiding damage caused by long-term rigid collision, improving the service life of the entire coupling protruding rod, enabling the coupling protruding rod to be damaged when touching the travel switch, effectively protecting the coupling protruding block, extending the service life of the coupling protruding rod, and further improving the service life of the entire alarm device, reducing the input of production cost.

[0014] The number of the springs 402 is four, which are respectively and evenly fixedly connected to the side wall surface of the first fixed rod 401.

[0015] The beneficial effects of the present utility model:

[0016] 1) A coupling protruding block is installed on the side wall of the coupling. When the slurry mixing tank operates, the stirring motor drives the reducer, output shaft and coupling to perform rotary motion. Whenever the coupling rotates one circle, the coupling protruding block arranged on the side wall of the coupling will touch the travel switch, forming an intermittent motion. The coupling drives the stirring blade to evenly stir the slurry in the slurry mixing tank. The travel switch will feedback an electrical signal to the time relay every 2.4 seconds. When a fault occurs in the coupling of the slurry mixing tank, the stirring blade stops working and the rotary motion stops. Therefore, the coupling protruding block stops touching the travel switch. When the time exceeds 5 seconds, the travel switch can transmit the feedback signal to the time relay, and the time relay controls the alarm to emit an alarm, which can timely transmit the alarm signal to the operator. After hearing the alarm, the operator can process the slurry in the slurry mixing tank for the first time, that is, clean it when the slurry is still in a flowable state, avoiding the operator entering the interior of the slurry mixing tank for cleaning, greatly shortening the processing time, effectively reducing the labor intensity of the operator, reducing the operation safety risk, and avoiding various risks brought by the slurry hardening due to no one noticing after the stirring stops rotating.

[0017] 2) The first fixed rod set can fixedly connect the entire coupling protruding rod to the side wall surface of the coupling, with firm fixation. The spring set can play a buffering role when the anti-collision rubber protrusion touches the travel switch, preventing damage caused by the long-term collision of the coupling protruding rod against the travel switch, affecting the alarm effect, extending the service life, saving input costs. The protective steel plate set can also play a protective role against the long-term collision of the coupling protruding rod, enhancing the strength of the coupling protruding rod; the anti-collision rubber protrusion set can achieve long-term contact between the coupling protruding rod and the travel switch, realizing flexible collision, avoiding damage caused by long-term rigid collision, improving the service life of the entire coupling protruding rod, enabling the coupling protruding rod to be damaged when touching the travel switch, effectively protecting the coupling protruding block, extending the service life of the coupling protruding rod, and then improving the service life of the entire alarm device and reducing the input of production costs.

[0018] 3) The alarm device has a more reasonable structural design, low processing and manufacturing costs, convenient operation, safe and reliable use. It can promptly detect when the stirring blade of the slurry stirring tank stops rotating, give an alarm in time, remind the operator to handle it, reduce the risk of accidents in the slurry stirring tank, eliminate the bin cleaning operation of the post personnel, increase the effective production time, save raw materials, reduce product costs. It has been put into production and use, with good use effects and is worthy of wide promotion and application. Brief Description of the Drawings

[0019] Figure 1 is a structural schematic diagram of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the coupling protruding rod in the present utility model.

[0021] In the figure: stirring motor 1, speed reducer 2, output shaft 3, coupling protruding rod 4, first fixed rod 401, spring 402, second fixed rod 403, protective steel plate 404, anti-collision rubber protrusion 405, travel switch 5, alarm 6, time relay 7, coupling 8, motor bracket 9. Detailed Embodiment

[0022] Embodiment 1.

[0023] The present utility model includes a stirring motor 1, a speed reducer 2, an output shaft 3, a coupling protruding rod 4, a travel switch 5, an alarm 6, a time relay 7, and a coupling 8. The specific structure includes a stirring motor 1, the stirring motor 1 is supported by a motor bracket 9, the bottom surface of the stirring motor 1 is connected with a speed reducer 2, the bottom surface of the speed reducer 2 is connected with an output shaft 3, the side wall surface of the output shaft 3 is provided with a coupling 8, the side wall surface of the coupling 8 is provided with a coupling protruding rod 4, and a travel switch 5 is installed on the motor bracket 9.

[0024] The described travel switch 5 is electrically connected to a time relay 7, and the time relay 7 is electrically connected to an alarm 6.

[0025] The described alarm 6 is an audible and visual alarm, model: JS-11; the model of the time relay 7 is: JS14P.

[0026] Usage method: When the slurry mixing tank is operating, the stirring motor 1 drives the speed reducer 2, output shaft 3, and coupling 8 to perform a rotary motion. Whenever the coupling 8 rotates one circle, the coupling projection rod 4 provided on the side wall of the coupling 8 will touch the travel switch 5, forming an intermittent motion. The coupling 8 drives the stirring blade to evenly stir the slurry in the slurry mixing tank. The travel switch 5 will feedback an electrical signal to the time relay 7 every 2.4 seconds. When a failure occurs in the coupling 8 of the slurry mixing tank, the stirring blade stops working and the rotary motion stops. Therefore, the coupling projection rod 4 stops touching the travel switch 5. When the time exceeds 5 seconds, the travel switch 5 can transmit the feedback signal to the time relay 7, and the time relay 7 controls the alarm 6 to emit an alarm, which can promptly transmit the alarm signal to the operator. After hearing the alarm, the operator can process the slurry in the slurry mixing tank in the first time.

[0027] Embodiment 2.

[0028] The utility model includes a stirring motor 1, a speed reducer 2, an output shaft 3, a coupling projection rod 4, a first fixing rod 401, a spring 402, a second fixing rod 403, a protective steel plate 404, an anti-collision rubber projection 405, a travel switch 5, an alarm 6, a time relay 7, and a coupling 8. The specific structure includes a stirring motor 1, which is supported by a motor bracket 9. The bottom surface of the stirring motor 1 is connected to a speed reducer 2, the bottom surface of the speed reducer 2 is connected to an output shaft 3, the side wall surface of the output shaft 3 is provided with a coupling 8, the side wall surface of the coupling 8 is provided with a coupling projection rod 4, and a travel switch 5 is installed on the motor bracket 9.

[0029] The described travel switch 5 is electrically connected to a time relay 7, and the time relay 7 is electrically connected to an alarm 6.

[0030] The coupling projection rod 4 includes a first fixing rod 401, a spring 402, a second fixing rod 403, a protective steel plate 404, and an anti-collision rubber projection 405. The first fixing rod 401 is fixedly installed on the side wall of the coupling 8. One end of the spring 402 is fixedly connected to the side wall surface of the first fixing rod 401, the other end of the spring 402 is fixedly connected to a second fixing rod 403, the side wall surface of the second fixing rod 403 is fixedly connected to a protective steel plate 404, and the side wall surface of the protective steel plate 404 is fixedly connected to an anti-collision rubber projection 405.

[0031] The number of the springs 402 is four, and they are respectively and evenly fixedly connected to the side wall surface of the first fixing rod 401.

[0032] The alarm 6 described above is an audible and visual alarm, with the model number: JS-11; the model number of the time relay 7 is: JS14P.

[0033] Usage method: When the slurry mixing tank is running, the stirring motor 1 drives the reducer 2, the output shaft 3 and the coupling 8 to perform rotary motion. Whenever the coupling 8 rotates one circle, the coupling convex rod 4 provided on the side wall of the coupling 8 will touch the travel switch 5, forming an intermittent motion. The coupling 8 drives the stirring blade to evenly stir the slurry in the slurry mixing tank. The travel switch 5 will feedback an electrical signal to the time relay 7 every 2.4 seconds. When a failure occurs in the coupling 8 of the slurry mixing tank, the stirring blade stops working and the rotary motion stops. Therefore, the coupling convex rod 4 stops touching the travel switch 5. When the time exceeds 5 seconds, the travel switch 5 can transmit the feedback signal to the time relay 7. The time relay 7 controls the alarm 6 to emit an alarm, and can timely transmit the alarm signal to the operator. After hearing the alarm, the operator can process the slurry in the slurry mixing tank in the first time.

[0034] The provided first fixing rod 401 can fixedly connect the entire coupling convex rod 4 to the side wall surface of the coupling, with reliable fixation. The provided spring 402 can play a buffering role when the anti-collision rubber protrusion 405 touches the travel switch 5, preventing damage caused by the long-term collision of the coupling convex rod 4 with the travel switch 5, affecting the alarm effect, prolonging the service life, saving the input cost. The provided protective steel plate 404 can also play a protective role in the long-term collision of the coupling convex rod 4, and can enhance the strength of the coupling convex rod 4; the provided anti-collision rubber protrusion 405 can achieve the long-term touch of the coupling convex rod 4 with the travel switch 5, realizing a flexible collision, avoiding damage caused by long-term rigid collision, improving the service life of the entire coupling convex rod 4, enabling the coupling convex rod 4 to be damaged when touching the travel switch 5, effectively protecting the coupling convex block, prolonging the service life of the coupling convex rod 4, and further improving the service life of the entire alarm device, reducing the input of production costs.

Claims

1. A slurry stirring tank coupling fault alarm device, including a stirring motor (1), and the stirring motor (1) is supported by a motor bracket (9), characterized in that: The bottom surface of the stirring motor (1) is connected to a speed reducer (2), the bottom surface of the speed reducer (2) is connected to an output shaft (3), a coupling (8) is installed on the side wall surface of the output shaft (3), a coupling convex rod (4) is installed on the side wall surface of the coupling (8), and a travel switch (5) is installed on the motor bracket (9).

2. The slurry stirring tank coupling fault alarm device according to claim 1, characterized in that: The travel switch (5) is electrically connected to a time relay (7), and the time relay (7) is electrically connected to an alarm (6).

3. The slurry stirring tank coupling fault alarm device according to claim 2, characterized in that: The coupling convex rod (4) includes a first fixing rod (401), a spring (402), a second fixing rod (403), a protective steel plate (404), and an anti-collision rubber protrusion (405). The first fixing rod (401) is fixedly installed on the side wall of the coupling (8). One end of a spring (402) is fixedly connected to the side wall surface of the first fixing rod (401). The other end of the spring (402) is fixedly connected to a second fixing rod (403). A protective steel plate (404) is fixedly connected to the side wall surface of the second fixing rod (403). An anti-collision rubber protrusion (405) is fixedly connected to the side wall surface of the protective steel plate (404).

4. The slurry stirring tank coupling fault alarm device according to claim 3, characterized in that: The number of the springs (402) is four, and they are respectively and evenly fixedly connected to the side wall surface of the first fixing rod (401).

Images