Coal blocking signal measuring device for coal feeder
By placing the coal blockage switch in the coal feeder pipe and away from the pouring area, the parabolic shape of the coal flow path is used to prevent the coal blockage switch from being smashed, and in the event of blockage, it contacts in advance and sends an alarm signal, thus solving the problem of coal blockage switch. The problem of being easily damaged and unable to alarm properly has been achieved, so the coal blocking switch can work normally and alarm in a timely manner.
Patent Information
- Application Number
- CN202421245195.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The coal-blocking switch of the coal feeder is easily smashed, resulting in missed stopping, pipe blocking and safety hazards. The existing protective plates cause the coal-blocking switch to be unable to alarm normally.
Design a coal feeder coal blockage signal measurement device. By placing the coal blockage switch in the coal drop pipe and away from the pouring area, the parabolic shape of the coal flow path is used to avoid the coal blockage switch from being smashed, and the coal blockage switch is contacted in advance when it is blocked. Send an alarm signal.
It effectively avoids the coal blocking switch being damaged by coal materials, ensures the normal operation of the coal blocking switch, and sends out alarm signals in a timely manner, reducing accidental stops and safety hazards.
Smart Images
Figure CN222373673U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal power plant equipment, in particular to a coal feeder coal blocking signal measuring device. Background Art
[0002] The coal blocking switch used by the coal feeder is a rotary level switch with model RP20BSSB040. The original installation position of the coal blocking switch is in the coal dumping area. Since there are often "large pieces" of material in the coal, the coal blocking switch is often broken, which not only increases the spare parts procurement expenses and maintenance costs, but also causes the coal feeder to stop and block the pipe due to the broken coal blocking switch, which also buries hidden dangers for the safe operation of the unit. In addition, since the installation position of the coal blocking switch is usually located obliquely above the coal drop pipe, and the installation direction is parallel to the coal drop pipe mouth, the coal blocking alarm signal can only be triggered after the coal is blocked to the outside of the coal drop pipe mouth and contacts the coal blocking switch, which is not conducive to timely eliminating the coal blocking problem.
[0003] To solve the above problems, the prior art adds a protective plate above the coal blockage switch, but it also brings new problems. Due to the existence of the protective plate, a measurement vacuum area is formed between the coal blockage switch and the protective plate. Sometimes, even if coal blockage occurs, the coal blockage switch can still rotate and operate normally, and no coal blockage alarm signal will be issued. Utility Model Content
[0004] The utility model aims to provide a coal feeder coal blocking signal measuring device to solve the problem that the coal blocking switch is easily destroyed.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coal feeder coal blockage signal measuring device, comprising a coal feeder, a coal feeding mechanism, a coal blockage switch, and a coal drop pipe, wherein the coal feeding mechanism is located in the coal feeder, and the coal drop pipe is located obliquely below the coal feeding mechanism, and the flow path of the coal from the coal feeding mechanism into the coal drop pipe is a pouring area, one end of the coal blockage switch is fixedly connected to the coal feeder, and the other end is located in the coal drop pipe and away from the pouring area.
[0006] The principles and advantages of this solution are:
[0007] In actual application, the coal feeder sends out the coal, and the coal is transported to the coal drop pipe through the coal feeding mechanism. The flow path forms a parabolic pouring area in the air. One end of the coal blocking switch is located in the coal drop pipe and away from the pouring area. When the coal in the coal blockage pipe is blocked, the coal blocking switch can contact the blocked coal in the coal blockage pipe in advance and eliminate the coal blockage problem in time. When the coal enters the coal drop pipe from the coal feeding mechanism, the coal blocking switch will not be hit by the coal because its flow path is parabolic, which can effectively avoid the coal blocking switch being damaged by collision with the coal.
[0008] The advantages of this solution are:
[0009] 1. After the protective baffle above the coal drop switch in the prior art is removed, interference factors in the measurement are eliminated, avoiding the occurrence of under-alarm.
[0010] 2. The coal feeder belt always transports coal at a certain speed. In the pouring area of the coal drop port, the coal always moves in a parabolic motion and will not hit the coal drop switch located in the coal drop pipe and away from the coal drop inclination area, thus protecting the coal drop switch.
[0011] 3. The position in the coal drop pipe far away from the coal drop inclination area is still within the range of the coal drop port, which will not have an adverse effect on the measurement of the coal blocking signal. One end of the coal blocking switch is located in the coal drop pipe, which can contact the coal blocking in the coal drop pipe in advance and send out an alarm signal in time.
[0012] Preferably, as an improvement, the coal feeding mechanism includes a belt and a roller, the belt is wrapped around the outer periphery of the roller and is used to move the coal, one end of the belt is located above the coal drop pipe, and the coal is fed into the coal drop pipe from there. An external motor is installed outside the coal feeder to drive the internal roller through a bearing, and the roller drives the belt to convey the coal.
[0013] Preferably, as an improvement, the right side of the coal feeder is fixedly connected with an outlet pipe, and the outlet pipe is fixedly connected to the coal blocking switch. A measuring port is opened obliquely above the right side of the coal feeder corresponding to the coal drop pipe away from the pouring area, and an outlet pipe is fixed at the measuring port toward the inside of the coal feeder, and a flange is fixed on the outlet pipe, and the flange size matches the size of the fixed flange of the coal blocking switch, which is used to fix the coal blocking switch on the coal feeder.
[0014] Preferably, as an improvement, the outlet pipe is at an angle of 40 degrees to the right side of the coal feeder. Since the outlet pipe is fixedly connected to the coal blocking switch, the coal blocking switch is also inclined at 40 degrees relative to the coal feeder, and the coal blocking switch can be extended into the coal drop pipe. When coal material starts to be blocked in the coal drop pipe, the coal blocking switch can contact the blocking material in advance and alarm in advance, which is conducive to the staff to eliminate the coal blocking problem in time and avoid the machine idling and affecting efficiency.
[0015] Preferably, as an improvement, the outlet pipe is connected with a slider, a slide rail is fixedly installed on the right side of the coal feeder, and the slider is slidably connected with the slide rail. The slider can slide up and down on the slide rail relative to the right side of the coal feeder, and at the same time drive the coal blocking switch to leave or enter the coal drop pipe.
[0016] Preferably, as an improvement, it also includes a cylinder, which is arranged on the right side of the coal feeder and fixedly connected to the slider. When the coal blocking switch detects coal blockage in the coal drop pipe, it outputs a switch alarm signal to the controller, and the coal feeder is tripped after a delay. During this process, the coal blocking switch is still in the coal drop pipe, and the coal feeder will still output coal to the outside. The coal in the coal drop pipe is constantly accumulated. When the coal accumulates to a certain extent, the coal at the top will slide down and may hit the coal blocking switch, causing damage to the coal blocking switch. In order to solve this problem, a slider is connected to the lead-out pipe, and a slide rail is fixedly installed on the right side of the coal feeder. When the coal blocking switch detects coal blockage, it outputs an alarm signal and a sliding signal at the same time. When the controller receives the sliding signal, it outputs a start command to the cylinder. The cylinder starts to push the slider upward, driving the coal blocking switch to leave the coal blocking pipe, so as to prevent the coal accumulation from sliding and hitting the coal blocking switch during the delay process. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a right side view of the embodiment 1 of the utility model;
[0018] Figure 2 This is a front view of Embodiment 1 of the present utility model;
[0019] Figure 3 This is the front view of Example 2 of the utility model. DETAILED DESCRIPTION
[0020] The following is further described in detail through specific implementation methods:
[0021] The reference numerals in the drawings of the specification include: coal feeder 1, coal material 2, pouring area 3, coal drop pipe 4, coal blocking switch 5, roller 6, belt 7, slide rail 8, slide block 9, cylinder 10.
[0022] Example 1
[0023] This embodiment is basically as shown in the attached Figure 1 , 2 As shown:
[0024] A coal feeder coal blocking signal measuring device comprises a coal feeder 1, a coal feeding mechanism, a coal blocking switch 5, and a coal drop pipe 4. The coal feeding mechanism comprises a belt 7 and a roller 6, which are located in the coal feeder 1. The belt 7 is wrapped around the outer periphery of the roller 6 and is used to run the coal 2. One end of the belt 7 is located above the coal drop pipe 4, and the coal 2 is fed into the coal drop pipe 4 from here. The flow path of the coal 2 from the coal feeding mechanism into the coal drop pipe 4 is a parabolic pouring area 3. The coal blocking switch 5 is a rotary level switch, model RP20BSSB040. The measuring principle is to use a micro motor as a driving device. When the material is not in contact, the motor operates normally. When the blade contacts the material, a reaction force against the motor is generated. If the material is scraped away by the blade, the motor continues to work. If the blade is blocked by the material, the reaction force reaches a certain value, the coal blocking switch 5 is actuated, and a switch alarm signal is output, and the coal feeder 1 is tripped after a delay. A flange for installation is fixedly connected to the coal blocking switch 5. A measuring port is opened on the right side of the coal feeder 1, corresponding to the coal dropping pipe 4 and obliquely above the pouring area 3. A lead-out pipe is welded to the measuring port toward the inside of the coal feeder 1. The lead-out pipe is installed at an angle of 40 degrees to the right side of the coal feeder 1. A flange is welded to the front end of the lead-out pipe. The size of the flange matches the size of the flange on the coal blocking switch 5. The lead-out pipe is fixedly connected to one end of the coal blocking switch 5 through a flange, and the other end of the coal blocking switch 5 is located in the coal dropping pipe 4 and away from the pouring area 3.
[0025] During actual use, the coal feeder 1 delivers the coal 2 and transports the coal 2 to the coal drop pipe 4 through the belt 7 and the roller 6. A coal blocking switch 5 is provided in the coal drop pipe 4 and on the side away from the inclined area. Since the coal blocking switch 5 is away from the pouring area 3, the coal 2 will not hit the coal blocking switch 5 when it falls. When coal blockage occurs in the coal drop pipe 4, the blades of the coal blocking switch 5 are blocked by the coal 2. When the reaction force reaches a certain value, the coal blocking switch 5 outputs a switch alarm signal, and the coal feeder 1 trips after a delay.
[0026] Embodiment 2:
[0027] This embodiment is basically as shown in the attached Figure 3 As shown:
[0028] The difference between Example 2 and Example 1 is that a slide rail 8 is fixed on the right side of the coal feeder 1, a slider 9 is connected to the end of the lead-out pipe not connected to the coal blocking switch 5, the slide rail 8 is slidably connected to the slider 9, and a cylinder 10 is provided on the right side of the coal feeder 1 below the slide rail 8.
[0029] In actual use, when the coal blocking switch 5 detects coal blockage in the coal drop pipe 4, it sends an alarm signal and a sliding signal to the controller. The controller detects the sliding signal and sends a start command to the cylinder 10 during the delay process, that is, before the coal feeder 1 trips. The cylinder 10 is then started. The cylinder 10 drives the slider 9 to move upward, driving the coal blocking switch 5 to leave the coal drop pipe 4 to avoid the coal blocking switch 5 being destroyed by the coal 2 accumulated and sliding in the coal pipe.
[0030] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A coal feeder coal blocking signal measuring device, comprising a coal feeder, a coal feeding mechanism, a coal blocking switch, and a coal drop pipe, wherein the coal feeding mechanism is located in the coal feeder, the coal drop pipe is located obliquely below the coal feeding mechanism, and the flow path of coal from the coal feeding mechanism into the coal drop pipe is a pouring area, characterized in that: One end of the coal blocking switch is fixedly connected to the coal feeder, and the other end is located in the coal dropping pipe and away from the pouring area.
2. A coal feeder blockage signal measuring device according to claim 1, characterized in that: The coal feeding mechanism comprises a belt and a roller. The belt is wrapped around the outer periphery of the roller and is used to move the coal. One end of the belt is located above the coal dropping pipe, and the coal is fed into the coal dropping pipe from here.
3. A coal feeder blockage signal measuring device according to claim 2, characterized in that: The right side of the coal feeder is fixedly connected with an outlet pipe, and the outlet pipe is fixedly connected with the coal blocking switch.
4. A coal feeder blockage signal measuring device according to claim 3, characterized in that: The outlet pipe is installed at an angle of 40 degrees to the right side of the coal feeder.
5. A coal feeder blockage signal measuring device according to claim 4, characterized in that: The lead-out pipe is connected with a sliding block, a sliding rail is fixedly installed on the right side of the coal feeder, and the sliding block is slidably connected with the sliding rail.
6. A coal feeder blockage signal measuring device according to claim 5, characterized in that: It also includes a cylinder, which is arranged on the right side of the coal feeder and fixedly connected to the sliding block.