Powder blockage detecting and dredging device

Abstract

The utility model discloses a powder blockage detecting and dredging device. The device comprises at least two pressure tapping devices arranged on a powder blanking device, a pressure difference transmitter connected with the pressure tapping devices, and a controller, the pressure tapping device comprises a first pressure tapping pipe, a second pressure tapping pipe, a pressure measuring pipe and an electric valve, and the first pressure tapping pipe and the second pressure tapping pipe are connected to the inlet side and the outlet side of the electric valve respectively and are communicated through the electric valve; the pressure measuring pipe is arranged on the second pressure taking pipe and is communicated with the second pressure taking pipe; the second pressure tapping pipe is inserted into the powder discharging device and is communicated with an inner cavity of the discharging device, and the first pressure tapping pipe is used for introducing compressed air; the pressure difference transmitter and the electric valve are both connected with the controller, and the controller is used for controlling opening and closing of the electric valve according to the pressure difference value detected by the pressure difference transmitter. According to the automatic clearing and discharging device, automatic clearing and discharging actions can be carried out at the initial stage of powder blockage, it is guaranteed that dredging and discharging can be carried out within a short time, and larger production accidents are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a powder material blockage detection and dredging device. BACKGROUND

[0002] When the hot raw material desulfurization process is used in the cement industry, the C5 cyclone is used to take air and material, and the cooling separator is used for cooling and gas-solid separation. In the production process, due to the process operation, the material arching and accumulation will occur at the bottom of the separator. When the problem lasts for a long time, a large amount of material will accumulate in the separator. When the material suddenly falls, it will cause a great impact on the system, resulting in overload of the system equipment, stoppage, unqualified product quality and other problems.

[0003] In addition, the material arching and accumulation will also occur in the cement silo during the discharging process, which will cause the blockage and material jam phenomenon, affecting the normal production. INVENTION CONTENTS

[0004] To solve the above problems, the utility model provides a powder material blockage detection and dredging device.

[0005] The utility model adopts the technical scheme of:

[0006] A powder material blockage detection and dredging device, comprising at least two pressure taking devices arranged on a powder material discharging device, a differential pressure transmitter connected with the pressure taking devices, and a controller; the pressure taking device comprises a first pressure taking pipe, a second pressure taking pipe, a pressure measuring pipe and an electric valve; the first pressure taking pipe and the second pressure taking pipe are respectively connected to the inlet side and the outlet side of the electric valve and are communicated through the electric valve; the pressure measuring pipe is installed on the second pressure taking pipe and is communicated with the second pressure taking pipe; the second pressure taking pipe is inserted into the powder material discharging device and is communicated with the inner cavity of the discharging device; the first pressure taking pipe is used for introducing compressed air; the differential pressure transmitter and the electric valve are connected with the controller; and the controller is used for controlling the opening and closing of the electric valve according to the pressure difference value detected by the differential pressure transmitter.

[0007] Further, the pipe diameters of the first pressure taking pipe and the second pressure taking pipe are the same, and the pipe diameter of the pressure measuring pipe is smaller than that of the first pressure taking pipe and the second pressure taking pipe. The same pipe diameters of the first pressure taking pipe and the second pressure taking pipe are beneficial to reducing the resistance of the compressed air, maintaining a high flow rate and improving the disturbance effect; the small pipe diameter of the pressure measuring pipe is beneficial to preventing material blockage and affecting the accuracy of pressure detection.

[0008] Further, the lower part of the pressure measuring pipe is vertically inserted into the second pressure taking pipe. This is beneficial to improving the accuracy of pressure detection.

[0009] Further, the second pressure taking pipe is obliquely upwardly inserted into the cone of the separator or the discharging silo and is communicated with the inner cavity of the cone. This is beneficial to improving the disturbance effect of the compressed air and blowing through the material.

[0010] Further, the angle between the second pressure tapping pipe and the horizontal plane is 50-70°. This is conducive to improving the disturbance effect of the compressed air and blowing through the material.

[0011] Further, the distance between the second pressure tapping pipe and the cone is 10-50mm. This is conducive to improving the disturbance effect of the compressed air and blowing through the material.

[0012] Further, the electric valve is an electric ball valve. This is conducive to preventing the material from blocking the valve core.

[0013] Further, the differential pressure transmitter is an electronic gas differential pressure transmitter. The electronic gas differential pressure transmitter can be connected to multiple pressure measuring points to measure the differential pressure of multiple points.

[0014] The beneficial effects of the present application are as follows:

[0015] 1. The pressure tapping device has a simple structure and can realize powder blocking detection and dredging functions.

[0016] 2. The device can perform self-dredging action at the initial stage of powder blocking to ensure that the material can be dredged in a short time and avoid larger production accidents. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the pressure tapping device structure of the present application.

[0018] Figure 2 is a schematic diagram of the installation structure of a powder blocking detection and dredging device of the present application.

[0019] Figure 3 is a schematic diagram of the working state 1 of the present application.

[0020] Figure 4 is a schematic diagram of the working state 2 of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below in combination with the drawings and a preferred embodiment.

[0022] The device of the present application can be used for blocking detection and dredging of the separator discharge, and can also be used for powder silo, such as cement silo, blocking detection and dredging of the discharge. The structure and effect of the present application will be described in detail below with the separator as an example.

[0023] Referring to Figures 1-4 , a powder blocking detection and dredging device, comprising at least two pressure tapping devices arranged on the conical part of the separator body, an electronic gas differential pressure transmitter 2 connected to the pressure tapping device, and a controller.

[0024] Two or more pressure tapping devices are installed on the conical part of the separator, at least one above and one below the cone. Depending on the need, different numbers of pressure tapping devices can be installed in the middle of the cone. In this embodiment, four pressure tapping devices are installed in the middle of the cone.

[0025] The four pressure tapping devices are, from top to bottom, the first pressure tapping device 1a, the second pressure tapping device 1b, the third pressure tapping device 1c, and the fourth pressure tapping device 1d. The pressures obtained by the four pressure tapping devices are, from top to bottom, pressure a, pressure b, pressure c, and pressure d.

[0026] The pressure tapping device comprises a first pressure tapping pipe 1-1, a second pressure tapping pipe 1-4, a pressure measuring pipe 1-2, and an electric ball valve 1-3. One side of the first pressure tapping pipe 1-1 and the second pressure tapping pipe 1-4 is respectively welded with a mounting flange, and the pipe diameter of the first pressure tapping pipe 1-1 and the second pressure tapping pipe 1-4 is the same, and the pipe diameter of the pressure measuring pipe 1-2 is smaller than that of the first pressure tapping pipe 1-1 and the second pressure tapping pipe 1-4. The first pressure tapping pipe 1-1 and the second pressure tapping pipe 1-4 are respectively connected with the inlet and outlet of the electric ball valve 1-3 through the mounting flanges thereof. The pressure measuring pipe 1-2 is obliquely upwardly inserted into the second pressure tapping pipe 1-4 and communicates with the second pressure tapping pipe 1-4; the first pressure tapping pipe 1-1 is used for connecting compressed air.

[0027] The separator body is vertically arranged, and the second pressure tapping pipe 1-4 of each pressure tapping device is obliquely upwardly inserted into the conical part of the separator and communicates with the inner cavity of the separator; the included angle between the second pressure tapping pipe 1-4 and the horizontal plane is 50-70°. The distance between the second pressure tapping pipe 1-4 and the conical part is 10-50 mm.

[0028] The pressure measuring pipe 1-2 of each pressure tapping device is connected with an electronic gas pressure difference transmitter through a wire, and the electronic gas pressure difference transmitter and the electric ball valve 1-3 are connected with a PLC controller through wires.

[0029] The electronic gas pressure difference transmitter detects and analyzes each pressure point,

[0030] When the pressure difference between pressure a and pressure d reaches a certain value, it is considered that the bottom of the separator (above the pressure tapping device 1d) is blocked.

[0031] When the pressure difference between pressure a and pressure c reaches a certain value, it is considered that the bottom of the separator (above the pressure tapping device 1c) is blocked.

[0032] When the pressure difference between pressure a and pressure b reaches a certain value, it is considered that the bottom of the separator (above the pressure tapping device 1b) is blocked.

[0033] The working principle of the present application is that each pressure point is detected and analyzed by the electronic gas pressure difference transmitter, the analyzed pressure difference value is transmitted to the PLC controller, the PLC controller judges whether the blockage occurs according to the detected pressure difference, when the blockage occurs, the electronic gas pressure difference transmitter sends the abnormal data of the pressure difference to the control system, and the control system issues an instruction to clear the blockage.

[0034] When the pressure difference between pressure a and pressure d reaches a certain value, and the pressure difference between pressure a and pressure c is normal, the system blockage occurs above the pressure taking device 1d and below the pressure taking device 1c, at this time the clearing program opens the electric valve of the pressure taking device 1d to disturb and promote the flow of the material at the pressure taking device 1d, when the pressure at the pressure taking device 1c fluctuates, it indicates that the compressed air blown into the pressure taking device 1d blows through the material, and the pressure can be transmitted to the pressure taking device 1c, this state is the performance of the material being blown through, at this time the electric valve of the pressure taking device 1d can be closed, and the pressure of each pressure taking device is observed with a time delay, and the pressure difference is normal, which is blown through, and the pressure difference is abnormal, which can continue to perform a clearing action until the system pressure difference is normal.

[0035] When the pressure difference between pressure a and pressure c reaches a certain value, and the pressure difference between pressure a and pressure b is normal, the system blockage occurs above the pressure taking device 1c and below the pressure taking device 1b, at this time the clearing program opens the electric valve of the pressure taking device 1d to disturb and promote the flow of the material at the pressure taking device 1d, after running for a period of time, the clearing program opens the electric valve of the pressure taking device 1c to disturb and promote the flow of the material at the pressure taking device 1c, when the pressure at the pressure taking device 1b fluctuates, it indicates that the material is blown through, at this time the electric valves of the pressure taking devices 1c and 1d can be closed, and the pressure of each pressure taking device is observed with a time delay, and the pressure difference is normal, which is blown through, and the pressure difference is abnormal, which can continue to perform a clearing action until the system pressure difference is normal.

[0036] When the pressure difference between pressure a and pressure b reaches a certain value, the system blockage occurs above the pressure taking device 1b and below the pressure taking device 1a, at this time the clearing program opens the electric valve of the pressure taking device 1d to disturb and promote the flow of the material at the pressure taking device 1d, after running for a period of time, the clearing program opens the electric valve of the pressure taking device 1c to disturb and promote the flow of the material at the pressure taking device 1c, after running for a period of time, the clearing program opens the electric valve of the pressure taking device 1b to disturb and promote the flow of the material at the pressure taking device 1b, when the pressure at the pressure taking device 1a fluctuates, it indicates that the material is blown through, at this time the electric valves of the pressure taking devices 1b, 1c and 1d can be closed, and the pressure of each pressure taking device is observed with a time delay, and the pressure difference is normal, which is blown through, and the pressure difference is abnormal, which can continue to perform a clearing action until the system pressure difference is normal.

[0037] The pressure taking device 1a is generally installed at a position where the material does not block, as a reference position of the whole system. The pressure value thereof can be compared with the historical data of the measured value thereof, that is, the average pressure value of the previous 1 hour before the pressure taking device 1a is extracted as a standard value, the pressure value detected by the electronic gas pressure difference transmitter 2 is dynamically compared with the standard value, when the existing pressure and the standard value have a large difference, that is, the material blocks at the pressure taking device 1a, the controller issues an alarm, and manual treatment of the blocked material is required.

[0038] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also within the scope of protection of the present application.

Claims

1. A device for detecting and clearing powder blockages, characterized in that, It includes at least two pressure tapping devices installed on the powder feeding device, a differential pressure transmitter connected to the pressure tapping devices, and a controller; The pressure tapping device includes a first pressure tapping tube (1-1), a second pressure tapping tube (1-4), a pressure measuring tube (1-2), and an electric valve (1-3). The first pressure tapping tube (1-1) and the second pressure tapping tube (1-4) are respectively connected to the inlet and outlet sides of the electric valve (1-3) and are connected through the electric valve (1-3). The pressure measuring tube (1-2) is installed on the second pressure tapping tube (1-4) and is connected to the second pressure tapping tube (1-4). The second pressure tapping tube is inserted into the powder feeding device and communicates with the inner cavity of the feeding device. The first pressure tapping tube (1-1) is used to introduce compressed air. The differential pressure transmitter and the electric valve (1-3) are both connected to the controller. The controller is used to control the opening and closing of the electric valve (1-3) according to the differential pressure value detected by the differential pressure transmitter.

2. The powder blockage detection and unblocking device according to claim 1, characterized in that, The first pressure tapping tube (1-1) and the second pressure tapping tube (1-4) have the same diameter, while the diameter of the pressure measuring tube (1-2) is smaller than that of the first pressure tapping tube (1-1) and the second pressure tapping tube (1-4).

3. The powder blockage detection and unblocking device according to claim 1, characterized in that, The lower part of the pressure measuring tube (1-2) is vertically inserted into the second pressure tapping tube (1-4).

4. The powder blockage detection and unblocking device according to claim 1, characterized in that, The second pressure tap (1-4) is inserted obliquely upwards into the cone of the separator or feed hopper and is connected to the inner cavity of the cone.

5. The powder blockage detection and unblocking device according to claim 1, characterized in that, The angle between the second pressure tap (1-4) and the horizontal plane is 50-70°.

6. The powder blockage detection and unblocking device according to claim 1, characterized in that, The distance from which the second pressure tap (1-4) is inserted into the cone is 10 to 50 mm.

7. The powder blockage detection and unblocking device according to claim 1, characterized in that, The electric valves (1-3) are electric ball valves.

8. The powder blockage detection and unblocking device according to claim 1, characterized in that, The differential pressure transmitter is an electronic gas differential pressure transmitter.

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