Alarm device capable of monitoring shaft breakage of shaftless screw conveyor

Abstract

The utility model discloses an alarm device capable of monitoring shaft breakage of a shaftless screw conveyor, which relates to the technical field of shaftless screw conveyors and comprises a conveying box body, a lining plate is fixedly arranged at the bottom of the conveying box body, a protective cover is arranged at the top of the conveying box body, and a closed conveying cavity is defined by the conveying box body, the lining plate and the protective cover; a shaftless spiral body is rotationally arranged in the conveying cavity, a driving shaft is arranged on the outer side of the conveying box body, one end of the driving shaft is fixed to the shaftless spiral body, and the other end of the driving shaft is fixed to the driving end of the servo driving mechanism. The system further comprises a monitoring module and an alarm module; the monitoring module is used for monitoring a rotation signal of the shaftless spiral body; the monitoring module is electrically connected with the alarm module through the controller, when the monitoring module monitors that the shaftless spiral body rotates abnormally, a monitoring signal is sent to the alarm module through the controller, and the alarm module executes a set program, shuts down the servo driving mechanism and gives an alarm to inform an operator of handling.

Description

Technical Field

[0001] The utility model relates to the technical field of shaftless screw conveyors, in particular to a shaft-broken alarm device capable of monitoring a shaftless screw conveyor. Background Art

[0002] The shaftless screw conveyor is a common sewage treatment conveying equipment used to separate the viscous substances (such as sludge) and solid wastes in the sewage. The existing shaftless screw conveyor usually includes a shaftless spiral blade, a conveying trough and a driving device for driving the shaftless spiral blade to rotate in the conveying trough, wherein the conveying trough is often set at an angle. During treatment, after the sewage is sent into the conveying trough, the shaftless spiral blade transports the solid waste and viscous substances in the sewage to the top of the conveying trough and separates them. The treated sewage flows along the shaftless spiral blade to the bottom of the conveying trough to achieve separation.

[0003] Shaftless screw conveyors are widely used in the sewage treatment industry. Currently, shaftless screw conveyors do not have a broken shaft monitoring and alarm function. If it is not discovered in time, a large amount of sludge will accumulate, which is not only difficult to clean, but also seriously affects the maintenance time and space due to the large amount of sludge accumulation. As a result, during the use process, the cost of manpower, materials, expenses, etc. is increased. There are also some accidents caused by broken shafts. Utility Model Content

[0004] The purpose of the utility model is to provide a shaft-breaking alarm device for monitoring a shaftless screw conveyor, and solve the following technical problems:

[0005] The current shaftless screw conveyors do not have a broken shaft monitoring and alarm function. If it is not discovered in time, a large amount of sludge will accumulate, which is not only difficult to clean, but also seriously affects the maintenance time and space due to the large amount of sludge accumulation, resulting in increased manpower, materials, expenses and other costs during use. And some accidents caused by broken shafts.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A shaft-broken alarm device capable of monitoring a shaftless screw conveyor comprises a conveying box, a lining plate is fixedly arranged at the bottom of the conveying box, a protective cover is arranged at the top of the conveying box, and the conveying box, the lining plate and the protective cover are enclosed to form a closed conveying cavity;

[0008] A shaftless screw is rotatably arranged in the conveying cavity, a driving shaft is arranged outside the conveying box, one end of the driving shaft is fixed to the shaftless screw, and the other end is fixed to the driving end of the servo drive mechanism;

[0009] It also includes a monitoring module and an alarm module, wherein the monitoring module is used to monitor the rotation signal of the shaftless screw;

[0010] The monitoring module is electrically connected to the alarm module through the controller. When the monitoring module detects abnormal rotation of the shaftless screw, the monitoring signal is sent to the alarm module through the controller. The alarm module executes the set program, shuts down the servo drive mechanism, and issues an alarm to notify the operating personnel to handle the problem.

[0011] Preferably, the monitoring module comprises two groups of fixed brackets symmetrically arranged at the end of the conveying box, and a bearing bracket is fixedly arranged between the two groups of fixed brackets;

[0012] The fixed brackets on both sides and the bearing bracket enclose a monitoring cavity, and a rotation speed detection mechanism is arranged in the monitoring cavity.

[0013] Preferably, the speed detection mechanism includes a first strong magnet and a second strong magnet which are symmetrically arranged in the monitoring cavity. The first strong magnet is fixed to the end of the shaftless spiral body, and the second strong magnet is rotated on one side of the bearing bracket through the first monitoring shaft. A first speed sensor is also fixedly arranged on the protective cover on the monitoring cavity for monitoring the speed of the first monitoring shaft.

[0014] Preferably, a positioning bearing is fixedly arranged in the bearing bracket, and the first monitoring shaft is rotatably arranged in the positioning bearing;

[0015] Wherein, the locating bearing is fixed on the bearing bracket by a retaining spring.

[0016] Preferably, the first strong magnet and the second strong magnet are in a circular structure, wherein the first strong magnet and the second strong magnet are respectively composed of two groups of first magnetic regions and two groups of second magnetic regions, the first magnetic regions and the second magnetic regions are alternately arranged, and the first magnetic regions and the second magnetic regions are respectively arranged as opposite magnetic regions;

[0017] The magnetic properties of the magnetic regions corresponding to the first strong magnetism and the second strong magnetism are opposite.

[0018] Preferably, the monitoring module comprises a protection box fixedly arranged at the end of the conveying box body, and a second monitoring shaft fixed to the shaftless screw body is rotatably arranged in the protection box;

[0019] Wherein, a second rotation speed sensor is arranged on the protection box, and the second rotation speed sensor is connected to the monitor through a line.

[0020] Preferably, a hinge is rotatably arranged on one side of the protection box to open or close the protection box.

[0021] Beneficial effects of the utility model:

[0022] (1) In the utility model, when the shaftless spiral body rotates, the shaftless spiral body can drive the first strong magnet to rotate. Based on the magnetic force of the first strong magnet and the second strong magnet, the second strong magnet can be driven to rotate synchronously. The second strong magnet drives the first monitoring shaft to rotate on one side of the bearing bracket. During this process, the speed of the first monitoring shaft is monitored in real time by the first speed sensor. When the shaftless spiral body breaks, it cannot drive the first strong magnet to rotate, and further cannot drive the first monitoring shaft to rotate by the second strong magnet. The monitoring stability is high.

[0023] (2) The utility model can prevent the shaftless conveyor from causing sludge accumulation after the shaft breaks, and at the same time issue an early warning, stop the connected equipment in time, and notify the operating personnel and maintenance personnel to carry out timely maintenance and treatment; reduce labor costs, reduce production safety accidents, and improve production safety efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the structure of a shaft-breaking alarm device capable of monitoring a shaftless screw conveyor of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the second monitoring shaft in a shaft-broken alarm device for monitoring a shaftless screw conveyor according to the utility model;

[0027] Figure 3 This is a structural schematic diagram of a strong magnetic installation in a shaft-breaking alarm device for monitoring a shaftless screw conveyor of the utility model;

[0028] Figure 4 The utility model is a structural schematic diagram of a strong magnet in a shaft-broken alarm device capable of monitoring a shaftless screw conveyor.

[0029] In the figure: 1. conveying box; 2. driving shaft; 3. shaftless spiral; 4. second speed sensor; 5. first strong magnet; 101. lining plate; 102. hinge; 103. protection box; 104. fixed bracket; 301. second monitoring axis; 401. line; 402. monitor; 501. second strong magnet; 502. first monitoring axis; 503. retaining spring; 504. positioning bearing; 505. bearing bracket; 506. second magnetic zone; 507. first magnetic zone. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1

[0032] See also Figure 1 As shown, the utility model is a shaft-breaking alarm device capable of monitoring a shaftless screw conveyor, comprising a conveying box 1, the conveying box 1 is configured as a U-shaped structure, a lining plate 101 is fixedly arranged at the bottom of the conveying box 1, and the lining plate 101 is configured as a semicircular structure. In one implementation of the present embodiment, a protective cover is arranged on the top of the conveying box 1. It should be noted that the conveying box 1, the lining plate 101 and the protective cover enclose a closed conveying cavity;

[0033] Specifically, a shaftless screw 3 is rotatably arranged in the conveying cavity, a driving shaft 2 is arranged on the outside of the conveying box 1, one end of the driving shaft 2 is fixed to the shaftless screw 3, and the other end is fixed to the driving end of the servo driving mechanism; it can be understood that when the material is conveyed, the driving shaft 2 is first driven to rotate by the servo driving mechanism, and the driving shaft 2 synchronously drives the shaftless screw 3 to rotate during the rotation process, so that the material can be conveyed;

[0034] In this embodiment, the servo drive mechanism may adopt a drive motor.

[0035] It also includes a monitoring module and an alarm module, wherein the monitoring module is used to monitor the rotation signal of the shaftless screw 3;

[0036] The monitoring module is electrically connected to the alarm module through the controller. When the monitoring module detects that the shaftless screw body 3 rotates abnormally, the monitoring signal is sent to the alarm module through the controller. The alarm module executes the set program, shuts down the servo drive mechanism, and alarms the operator to handle the problem.

[0037] It should be noted that when the shaftless screw body 3 is driven to rotate, the rotation signal of the shaftless screw body 3 is monitored in real time by the monitoring module. When the monitoring module detects that the shaftless screw body 3 rotates abnormally, the monitoring signal is sent to the alarm module through the controller. The alarm module executes the set program, shuts down the servo drive mechanism, and alarms the operating personnel to handle it.

[0038] In this embodiment, the controller may be a central processing unit (PLC), and the alarm module includes an alarm to generate an alarm.

[0039] Example 2

[0040] Based on Example 1, please refer to Figure 1 and Figure 3 The monitoring module includes two groups of fixed brackets 104 symmetrically fixedly arranged at the end of the conveying box 1, and a bearing bracket 505 is fixedly arranged between the two groups of fixed brackets 104, wherein the fixed brackets 104 on both sides and the bearing bracket 505 enclose a monitoring cavity, and a speed detection mechanism is arranged in the monitoring cavity; it can be explained that when the rotation of the shaftless screw body 3 is monitored, the speed detection mechanism arranged in the monitoring cavity is used to monitor the speed of the end of the shaftless screw body 3 in real time, and the monitoring result is sent to the controller;

[0041] In this embodiment, the speed detection mechanism includes a first strong magnet 5 and a second strong magnet 501 which are symmetrically arranged in the monitoring cavity. The first strong magnet 5 is fixed to the end of the shaftless spiral 3, and the second strong magnet 501 is arranged on one side of the bearing bracket 505 through the first monitoring shaft 502. A first speed sensor is also fixedly arranged on the protective cover on the monitoring cavity to monitor the speed of the first monitoring shaft 502. It can be explained that when the shaftless spiral 3 rotates, the shaftless spiral 3 can drive the first strong magnet 5 to rotate, and based on the magnetic force of the first strong magnet 5 and the second strong magnet 501, the second strong magnet 501 can be driven to rotate synchronously. The second strong magnet 501 drives the first monitoring shaft 502 to rotate on one side of the bearing bracket 505. During this process, the rotation speed of the first monitoring shaft 502 is monitored in real time by the first speed sensor. When the shaftless spiral body 3 is broken, it cannot drive the first strong magnet 5 to rotate, and further cannot drive the first monitoring shaft 502 to rotate through the second strong magnet 501. This embodiment can prevent the shaftless conveyor from causing sludge accumulation after the shaft is broken, and at the same time issue an early warning, stop the connected equipment in time, and notify the operating personnel and maintenance personnel to carry out timely maintenance and processing; reduce labor costs, reduce production safety accidents, and improve production safety efficiency.

[0042] As a further solution of this embodiment, a positioning bearing 504 is fixedly arranged in the bearing bracket 505, and the first monitoring shaft 502 is rotatably arranged in the positioning bearing 504, wherein the positioning bearing 504 is fixed to the bearing bracket 505 by a retaining spring 503; it should be noted that, in this embodiment, the positioning bearing 504 is first fixed to the bearing bracket 505 by the retaining spring 503, and then the first monitoring shaft 502 is inserted into the positioning bearing 504 for positioning, so that the first monitoring shaft 502 can rotate stably.

[0043] See also Figure 4, further, the first strong magnet 5 and the second strong magnet 501 are circular structures, wherein the first strong magnet 5 and the second strong magnet 501 are respectively composed of two groups of first magnetic regions 507 and two groups of second magnetic regions 506, the first magnetic regions 507 and the second magnetic regions 506 are alternately arranged, and the first magnetic regions 507 and the second magnetic regions 506 are respectively arranged as opposite magnetics;

[0044] In addition, the magnetism of the magnetic regions corresponding to the first strong magnet 5 and the second strong magnet 501 is opposite; specifically, by setting the magnetism of the first strong magnet 5 and the second strong magnet 501 accordingly, the second strong magnet 501 can be driven to rotate when the first strong magnet 5 rotates.

[0045] Example 3

[0046] Based on Example 1, please refer to Figure 2 The monitoring module includes a protective box 103 fixedly arranged at the end of the conveying box body 1, and a second monitoring shaft 301 fixed to the shaftless screw body 3 is rotatably arranged in the protective box 103, wherein a second speed sensor 4 is provided on the protective box 103, and the second speed sensor 4 is connected to the monitor 402 via a line 401; specifically, in this embodiment, by directly setting a second monitoring shaft 301 for monitoring the speed at the end of the shaftless screw body 3, the second speed sensor 4 can be used to directly monitor, and the monitoring signal is transmitted to the monitor 402 via the line 401.

[0047] In this embodiment, a hinge 102 is rotatably arranged on one side of the protection box 103 to open or close the protection box 103, so as to facilitate inspection and maintenance by the operating personnel.

[0048] The working principle of the utility model is as follows: first, the driving shaft 2 is driven to rotate by the servo driving mechanism, and the driving shaft 2 synchronously drives the shaftless screw 3 to rotate during the rotation process, so that the material can be transported. When the shaftless screw 3 rotates, the shaftless screw 3 can drive the first strong magnet 5 to rotate. Based on the magnetic force of the first strong magnet 5 and the second strong magnet 501, the second strong magnet 501 can be synchronously driven to rotate. The second strong magnet 501 drives the first monitoring shaft 502 to rotate on one side of the bearing bracket 505. During this process, the rotation speed of the first monitoring shaft 502 is monitored in real time by the first speed sensor. When the shaftless screw 3 is broken, it cannot drive the first strong magnet 5 to rotate, and thus cannot drive the first monitoring shaft 502 to rotate through the second strong magnet 501.

[0049] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0050] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A shaft-broken alarm device for monitoring a shaftless screw conveyor, comprising a conveying box (1), characterized in that: A lining plate (101) is fixedly arranged at the bottom of the conveying box (1), a protective cover is arranged at the top of the conveying box (1), and the conveying box (1), the lining plate (101) and the protective cover are enclosed to form a closed conveying chamber; A shaftless screw (3) is rotatably arranged in the conveying cavity, a driving shaft (2) is arranged outside the conveying box (1), one end of the driving shaft (2) is fixed to the shaftless screw (3), and the other end is fixed to the driving end of the servo drive mechanism; It also includes a monitoring module and an alarm module, wherein the monitoring module is used to monitor the rotation signal of the shaftless screw (3); The monitoring module is electrically connected to the alarm module via the controller. When the monitoring module detects that the shaftless screw (3) rotates abnormally, the monitoring signal is sent to the alarm module via the controller. The alarm module executes a set program to shut down the servo drive mechanism and issues an alarm to notify the operating personnel to handle the problem.

2. The device for monitoring the broken shaft of a shaftless screw conveyor according to claim 1 is characterized in that: The monitoring module comprises two groups of fixed brackets (104) symmetrically arranged at the end of the conveying box (1), and a bearing bracket (505) is fixedly arranged between the two groups of fixed brackets (104); The fixed brackets (104) on both sides and the bearing bracket (505) enclose a monitoring cavity, and a rotation speed detection mechanism is provided in the monitoring cavity.

3. The device for monitoring the broken shaft of a shaftless screw conveyor according to claim 2 is characterized in that: The rotation speed detection mechanism comprises a first strong magnet (5) and a second strong magnet (501) which are symmetrically arranged in a monitoring cavity, wherein the first strong magnet (5) is fixed to the end of the shaftless spiral body (3), and the second strong magnet (501) is arranged on one side of a bearing bracket (505) through a first monitoring shaft (502) for rotation. A first rotation speed sensor is also fixedly arranged on a protective cover on the monitoring cavity for monitoring the rotation speed of the first monitoring shaft (502).

4. The device for monitoring the broken shaft of a shaftless screw conveyor according to claim 3 is characterized in that: A positioning bearing (504) is fixedly arranged in the bearing bracket (505), and the first monitoring shaft (502) is rotatably arranged in the positioning bearing (504); The positioning bearing (504) is fixed on the bearing bracket (505) by means of a retaining spring (503).

5. The device for monitoring the broken shaft of a shaftless screw conveyor according to claim 3 is characterized in that: The first strong magnet (5) and the second strong magnet (501) are in a circular structure, wherein the first strong magnet (5) and the second strong magnet (501) are respectively composed of two groups of first magnetic regions (507) and two groups of second magnetic regions (506), the first magnetic regions (507) and the second magnetic regions (506) are alternately arranged, and the first magnetic regions (507) and the second magnetic regions (506) are respectively arranged as opposite magnetic regions; The magnetic properties of the magnetic regions corresponding to the first strong magnet (5) and the second strong magnet (501) are opposite.

6. The device for monitoring the broken shaft of a shaftless screw conveyor according to claim 1 is characterized in that: The monitoring module comprises a protection box (103) fixedly arranged at the end of the conveying box body (1), and a second monitoring shaft (301) fixed to the shaftless screw body (3) is rotatably arranged in the protection box (103); A second rotation speed sensor (4) is provided on the protection box (103), and the second rotation speed sensor (4) is connected to the monitor (402) via a line (401).

7. The device for monitoring the broken shaft of a shaftless screw conveyor according to claim 6 is characterized in that: A hinge (102) is also rotatably arranged on one side of the protection box (103) for opening or closing the protection box (103).

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