A photoelectric tube soot blowing device

Abstract

The present invention relates to a sootblowing device of a directed photoelectric tube, comprising a sootblowing device housing, a first current equalizing plate and a second current equalizing plate arranged inside the sootblowing device housing and spaced apart, a compressed air blowing pipe connected to the tail of the sootblowing device, and a photoelectric sensor arranged inside the sootblowing device housing between the first current equalizing plate and the second current equalizing plate; a plurality of first air vents are provided on the first current equalizing plate, a photoelectric sensor through hole is provided at the center of the second current equalizing plate, and a plurality of second air vents are provided around the photoelectric sensor. This technical solution is combined with actual production, and can effectively reduce the sensor signal misdetection caused by smoke adhering to the mirror surface of the photoelectric sensor, the switch control signal erroneously output, the malfunction of various production equipment in the silk-making workshop, and the number of shutdowns of the host equipment.

Description

Technical Field

[0001] The invention belongs to the technical field of cleaning, and in particular relates to a directed photoelectric tube soot blowing device. Background Art

[0002] Photoelectric sensors achieve functional control by converting changes in light intensity into changes in electrical signals. Photoelectric sensors generally consist of three parts: transmitter, receiver and detection circuit.

[0003] Nowadays, the photoelectric sensors used in tobacco production plants, especially in silk-making workshops, are generally through-beam photoelectric sensors. The emitter and light receiver of the through-beam photoelectric switch are installed exposed on both sides of the path through which the detection object passes. When the detection object passes between the emitter and the receiver to block the light, the light receiver is activated and a switch control signal is output.

[0004] During the production process, a large amount of dust is generated in the production workshop. This dust adheres to the mirrors of the photoelectric sensor transmitter and receiver, causing the light emitted by the transmitter to be absorbed and refracted by the dust particles. The light intensity reaching the receiver is reduced or even completely eliminated, resulting in false detection of the photoelectric sensor signal and incorrect output of the switch control signal. This incorrect output of the switch control signal causes various production equipment in the silk-making workshop to malfunction or even shut down, seriously affecting process indicators. Summary of the Invention

[0005] The purpose of the present invention is to provide a soot-blowing device of a directed photoelectric tube to solve the problem that dust adheres to the mirror surfaces of the transmitter and receiver of the photoelectric sensor, causing the light emitted by the transmitter to be absorbed and refracted by smoke particles, the intensity of the light reaching the receiver to be reduced or even no light reaches the receiver, the photoelectric sensor signal to be misdetected, and the switch control signal to be erroneously output.

[0006] To achieve the above objectives, this application is implemented through the following technical solutions:

[0007] A sootblower device with an opposed photoelectric tube includes a sootblower housing, a first current equalizer and a second current equalizer disposed inside the housing and spaced apart from each other, a compressed air blowing pipe connected to the rear end of the sootblower, and a photoelectric sensor disposed inside the housing between the first current equalizer and the second current equalizer.

[0008] A plurality of first ventilation holes are provided on the first current balancing plate, a photoelectric sensor through hole is provided at the center of the second current balancing plate, and a plurality of second ventilation holes are provided around the photoelectric sensor.

[0009] Furthermore, the first flow balancing plate is arranged between the tail of the sootblowing device and the first flow balancing plate.

[0010] Furthermore, the multiple first vents provided on the first current balancing plate are symmetrically arranged about the center of the first current balancing plate, and the multiple second vents provided on the second current balancing plate are symmetrically arranged about the center of the second current balancing plate.

[0011] Furthermore, no first vent hole is provided at the center of the first current balancing plate.

[0012] Furthermore, the axial cross-section of the first vent hole is trapezoidal, and the diameter of the first vent hole at one end close to the tail of the sootblowing device is larger than the diameter of the first vent hole at one end close to the second flow equalizing plate.

[0013] Furthermore, the axial cross-section of the second vent hole is rectangular.

[0014] Furthermore, the diameter of the second vent hole is 1.2-1.5 times the diameter of the smallest end of the first vent hole.

[0015] Furthermore, the sootblowing device shell is connected into an integrated structure from the front end to the tail in sequence by a first tube body, a transition tube body and a second tube body, the inner diameter of the first tube body is larger than the inner diameter of the second tube body; the outer end of the second tube body is connected to the compressed air blowing pipe, and the first flow equalizing plate and the second flow equalizing plate are both arranged in the first tube body; a photoelectric sensor fixing hole is provided on the side wall of the first tube body between the first flow equalizing plate and the second flow equalizing plate.

[0016] The beneficial effects of the present invention are:

[0017] This technical solution combined with actual production can effectively reduce the number of shutdowns of the main equipment caused by false detection of sensor signals and incorrect output of switch control signals due to smoke and dust adhering to the mirror of the photoelectric sensor, which leads to malfunction of various production equipment in the silk-making workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the sootblowing device of the present invention, and the direction of the arrow in the figure is the direction of compressed air flow.

[0019] Figure 2 Schematic diagram of the structure of the first current balancing sheet;

[0020] Figure 3 Schematic diagram of the structure of the second current balancing plate;

[0021] Figure 4 Schematic diagram of the sootblowing device shell structure.

[0022] Description of Reference Numerals

[0023] 1-sootblowing device housing, 2-first flow equalizing plate, 3-second flow equalizing plate, 4-first air vent, 5-second air vent, 6-photoelectric sensor passage hole, 7-first pipe body, 8-transition pipe body, 9-second pipe body, 10-photoelectric sensor fixing hole. DETAILED DESCRIPTION

[0024] The technical solutions of the present invention are described in detail below through examples. The following examples are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and cannot be interpreted as limiting the technical solutions of the present invention.

[0025] like Figures 1 to 4 As shown, the present application provides a sootblowing device of a opposed-type photoelectric tube, comprising a sootblowing device shell 1, a first current equalizing plate 2 and a second current equalizing plate 3 arranged inside the sootblowing device shell and spaced apart, a compressed air blowing pipe connected to the tail of the sootblowing device, and a photoelectric sensor arranged inside the sootblowing device shell between the first current equalizing plate and the second current equalizing plate.

[0026] Combine Figure 4 The shell of the sootblowing device of the present application is connected into an integral structure by a first tube body 7, a transition tube body 8 and a second tube body 9 from the front end to the tail. The inner diameter of the first tube body is larger than the inner diameter of the second tube body. The inner diameter of the transition tube body gradually increases when it extends from the second tube body to the first tube body.

[0027] The outer end of the second tube body is connected to the compressed air blowing pipe, and the compressed air enters the transition tube body and the first tube body through the compressed air blowing pipe and the second tube body. Because the inner diameter of the transition tube body gradually increases, the flow rate of the compressed air decreases, which is not conducive to the effect of blowing dust off the mirror surface of the photoelectric sensor.

[0028] The first and second current equalizers are both disposed within the first tube. A photoelectric sensor fixing hole 10 is provided on the sidewall of the first tube between the first and second current equalizers. The photoelectric sensor is secured to the sootblower housing through this hole. The first current equalizer is disposed between the tail of the sootblower and the first current equalizer.

[0029] The multiple first vents 4 provided on the first flow equalizer 2 are all symmetrically arranged about the center of the first flow equalizer. No first vent is provided at the center of the first flow equalizer to avoid forming an airflow beam in the middle and affecting the blowing effect of other parts. The axial cross-section of the first vent is trapezoidal, and the diameter of the first vent near the end of the sootblower is larger than the diameter of the first vent near the end of the second flow equalizer. The structure of the first vent reduces the flow rate entering the transition pipe body and the rear end of the first pipe body. The compressed air with reduced pressure is accelerated again after passing through the first vent. After being subdivided by the multiple first vents, this accelerated compressed air forms multiple airflows that pass over the mirror surface of the photoelectric sensor in a manner basically parallel to the mirror surface, carrying away the dust on the mirror surface. The airflow basically does not form an angle with the mirror surface, avoiding the phenomenon of reflection, refraction, etc. caused by the contact between the airflow and the mirror surface, which causes the dust to spread in the sootblower. After the blowing stops, some dust falls on the mirror surface again.

[0030] A photoelectric sensor passage hole 6 is provided at the center of the second equalizing plate for placing the photoelectric sensor into the sootblowing device. A plurality of second air vents 5 are provided around the photoelectric sensor, and the axial cross-section of the second air vent is rectangular. The plurality of second air vents provided on the second equalizing plate are symmetrically arranged around the center of the second equalizing plate. The diameter of the second air vent is 1.2-1.5 times the diameter of the smallest end of the first air vent. Such a second air vent is conducive to the rapid passage of dust-laden air through the second equalizing plate, and can avoid the problem of excessive pressure drop when the second equalizing plate is not used, resulting in insufficient flow rate passing through the photoelectric sensor and inability to effectively remove dust.

[0031] The present invention has a simple structure. Based on the cylindrical structure of a photoelectric sensor sootblower, a compressed air blowpipe is connected to the rear end of the sootblower. A flow equalizer distributes the compressed air, ensuring equal air pressure at all points within the sootblower. This provides a continuous positive pressure within the sootblower, using the positive pressure of the compressed air to blow away dust adhering to the photoelectric sensor mirror. This prevents false sensor signal detection and erroneous switch control signal output caused by dust adhering to the photoelectric sensor mirror.

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A sootblowing device with a photoelectric tube, characterized in that: The device comprises a sootblowing device housing, a first flow balancing plate and a second flow balancing plate arranged inside the sootblowing device housing and spaced apart from each other, a compressed air blowing pipe connected to the tail of the sootblowing device, and a photoelectric sensor arranged inside the sootblowing device housing between the first flow balancing plate and the second flow balancing plate; A plurality of first vent holes are provided on the first current balancing plate, a photoelectric sensor passage hole is provided at the center of the second current balancing plate, and a plurality of second vent holes are provided around the photoelectric sensor; The axial cross-section of the first vent hole is trapezoidal, and the diameter of the first vent hole at one end close to the tail of the sootblower is larger than the diameter of the first vent hole at one end close to the second flow equalizing plate; The axial cross-section of the second vent hole is rectangular; No first vent hole is provided at the center of the first current balancing plate; The diameter of the second vent hole is 1.2-1.5 times the diameter of the smallest end of the first vent hole.

2. The opposing photoelectric tube sootblowing device according to claim 1, characterized in that: The first flow balancing plate is arranged between the tail of the sootblowing device and the second flow balancing plate.

3. The opposing photoelectric tube sootblowing device according to claim 1, characterized in that: The multiple first vents provided on the first current balancing plate are all symmetrically arranged about the center of the first current balancing plate, and the multiple second vents provided on the second current balancing plate are all symmetrically arranged about the center of the second current balancing plate.

4. The opposing photoelectric tube sootblowing device according to claim 1, characterized in that: The sootblowing device shell is connected into an integral structure from the front end to the tail in sequence by a first tube body, a transition tube body and a second tube body, the inner diameter of the first tube body is larger than the inner diameter of the second tube body; the outer end of the second tube body is connected to the compressed air blowing pipe, and the first flow equalizing plate and the second flow equalizing plate are both arranged in the first tube body; a photoelectric sensor fixing hole is provided on the side wall of the first tube body between the first flow equalizing plate and the second flow equalizing plate.

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