A control device for boiler soot blowing

Abstract

The utility model relates to a boiler soot blowing technical field discloses a kind of control device of boiler soot blowing, including soot blowing spray head, pedestal and lifting seat, the one end of the shell close to soot blowing spray head is equipped with air inlet cylinder, air inlet cylinder with the soot blowing spray head between being equipped with mounting cover, soot blowing spray head movably connects the mounting cover, the bottom end of the mounting cover is fixedly provided with discharge pipe, the other end of the discharge pipe is fixedly connected with the top of the collection box, the utility model is cleaned by continuously brushing the inner wall of soot blowing spray head to brush, then the residue under the brush gathers to discharge port under the action of centrifugal force and gravity, miniature air pump is sprayed high-pressure airflow in discharge pipe by nozzle, residue is rapidly blown into collection box, avoid wet sticky impurity adhesion pipe wall, ensure that residue is thoroughly discharged, and high-pressure airflow can synchronously clean the inner wall of discharge pipe, reduce the risk of blockage, realize the synchronous efficient of cleaning and residue discharge, improve soot blowing efficiency and boiler heat exchange performance.

Description

Technical Field

[0001] This utility model relates to the field of boiler soot blowing technology, and in particular to a control device for boiler soot blowing. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy from fuel and electrical energy. A boiler consists of two main parts: the boiler itself and the furnace. The hot water or steam produced in a boiler can directly provide the heat energy needed for industrial production and daily life, or it can be converted into mechanical energy through a steam power unit, or further converted into electrical energy through a generator. Boilers that provide hot water are called hot water boilers, mainly used for domestic purposes, with some applications in industrial production. Boilers that produce steam are called steam boilers, often simply referred to as boilers, and are mostly used in thermal power plants, ships, locomotives, and industrial and mining enterprises.

[0003] An existing boiler steam soot blowing control device (announcement number: CN222616925U) adjusts the height of the soot blowing device via a hydraulic rod and automatically extends the soot blowing device into the boiler via a pushing mechanism. It can be adjusted for different boiler positions, offering high flexibility. The soot blowing device blows soot into the boiler and automatically cleans the internal nozzles of the soot blowing device, greatly improving the efficiency of boiler soot blowing and cleaning. Although it can clean the inner wall of the nozzle body with a cleaning brush, it cannot effectively remove the cleaned residue. The impurities brushed off are easily adhered to the inner wall of the nozzle due to gravity or steam flow, which can clog the nozzle again and increase the risk of system failure. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a control device for boiler soot blowing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A control device for boiler soot blowing includes a soot blowing nozzle, a base, and a lifting seat. A collection box is installed on one side of the lifting seat via fasteners. A housing is fixedly installed on the upper end of the lifting seat. An air inlet is provided at the end of the housing near the soot blowing nozzle. A mounting cover is provided between the air inlet and the soot blowing nozzle. The soot blowing nozzle is movably connected to the mounting cover. A slag discharge pipe is fixedly provided at the bottom end of the mounting cover. The other end of the slag discharge pipe is fixedly connected to the top of the collection box. A nozzle is installed at the end of the slag discharge pipe near the mounting cover via fasteners. A cleaning brush is fixedly installed inside the mounting cover.

[0007] As a further embodiment of this utility model, a miniature air pump is fixedly installed on the top of the collection box, a high-pressure hose is fixedly provided between the miniature air pump and the nozzle, a motor is fixedly installed in the middle of the outer shell, and a gear is fixedly installed on the outer wall of the blowing nozzle near the mounting cover.

[0008] As a further embodiment of this utility model, the high-pressure hose is connected to the outer wall of the slag discharge pipe through several hooks, a lead screw is fixed on the output shaft of the motor, a threaded sleeve is threaded on the lead screw, and a hydraulic cylinder is installed on the base through fasteners.

[0009] As a further embodiment of this utility model, a sliding rod is fixedly provided on the screw sleeve, the sliding rod is slidably connected to the outer shell, a fixing rod is fixedly provided between the sliding rod and the air inlet cylinder, the oil cylinder is fixedly connected to the bottom of the lifting seat through the output shaft, and the sliding rods are symmetrically distributed on the outer shell.

[0010] As a further embodiment of this utility model, a micro motor is fixedly installed on the outer wall of the mounting cover, and a main gear is fixedly installed on the output shaft of the micro motor, the main gear meshing with the driven gear.

[0011] As a further embodiment of this utility model, a pull-out box is embedded in the collection box, several spray pipes are fixedly provided on the soot blowing nozzle, a heating pipe is fixedly provided in the air inlet cylinder, a steam inlet pipe is fixedly provided on the top of the air inlet cylinder, and a solenoid valve is fixedly provided at one end of the slag discharge pipe near the collection box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] During use, by setting up a slag discharge pipe, mounting cover, nozzle, collection box, and cleaning brush, while the soot blowing nozzle rotates and sprays steam, the cleaning brush continuously cleans the inner wall of the soot blowing nozzle, effectively removing accumulated ash residue. The residue brushed off is then collected at the slag discharge port under the action of centrifugal force and gravity. At this time, the solenoid valve opens, and the micro air pump sprays high-pressure airflow into the slag discharge pipe through the nozzle, quickly blowing the residue into the collection box. This prevents wet and sticky impurities from adhering to the pipe wall, ensuring thorough slag discharge. The high-pressure airflow can also clean the inner wall of the slag discharge pipe simultaneously, reducing the risk of blockage. This achieves simultaneous and efficient cleaning and slag discharge, improving soot blowing efficiency and boiler heat exchange performance. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a boiler soot blowing control device proposed in this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of a boiler soot blowing control device proposed in this utility model;

[0016] Figure 3 This is an enlarged structural diagram of point A of the boiler soot blowing control device proposed in this utility model;

[0017] Figure 4 This is an enlarged structural diagram of section B of a boiler soot blowing control device proposed in this utility model;

[0018] Figure 5 This is a schematic diagram of the disassembled structure of the mounting cover of the boiler soot blowing control device proposed in this utility model;

[0019] In the diagram: 1. Soot blowing nozzle; 101. Mounting cover; 102. Slag discharge pipe; 103. Collection box; 104. High-pressure hose; 105. Miniature air pump; 106. Nozzle; 2. Base; 201. Hydraulic cylinder; 202. Motor; 203. Lead screw; 3. Lifting seat; 301. Outer shell; 302. Slide rod; 303. Air inlet cylinder; 4. Steam inlet pipe; 5. Screw sleeve; 6. Fixing rod; 7. Driven gear; 8. Miniature motor; 801. Main gear; 802. Pull-out box; 803. Solenoid valve; 804. Heating tube; 805. Cleaning brush; 806. Spray pipe. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Reference Figures 1-5A control device for boiler soot blowing includes a soot blowing nozzle 1, a base 2, and a lifting seat 3. A collection box 103 is installed on one side of the lifting seat 3 by fasteners. A housing 301 is fixedly installed on the upper end of the lifting seat 3. An air inlet 303 is provided at one end of the housing 301 near the soot blowing nozzle 1. An installation cover 101 is provided between the air inlet 303 and the soot blowing nozzle 1. The soot blowing nozzle 1 is movably connected to the installation cover 101. A slag discharge pipe 102 is fixedly provided at the bottom end of the installation cover 101. The other end of the slag discharge pipe 102 is fixedly connected to the top of the collection box 103. A nozzle 106 is installed at one end of the slag discharge pipe 102 near the installation cover 101 by fasteners. A cleaning brush 805 is fixedly installed inside the installation cover 101.

[0024] In use, the sootblowing nozzle 1 is pushed to a suitable position inside the boiler. Then, steam enters the air inlet cylinder 303 through the steam inlet pipe 4. At the same time, the micro motor 8 starts, and its output shaft drives the main gear 801 to rotate. The main gear 801 meshes with the driven gear 7 on the outer wall of the sootblowing nozzle 1, causing the sootblowing nozzle 1 to drive multiple injection pipes 806 to rotate and inject steam for sootblowing. During the rotation of the sootblowing nozzle 1, the cleaning brush 805 continuously cleans its inner wall. After sootblowing is completed, the sootblowing nozzle 1 is removed from the boiler, the solenoid valve 803 is opened, and the micro air pump 105 sends high-pressure airflow through the high-pressure hose 104 and nozzle 106 into the slag discharge pipe 102. The cleaned residue, under the combined action of centrifugal force, gravity and high-pressure airflow, enters the pull-out box 802 in the collection box 103 along the slag discharge pipe 102. This improves the sootblowing efficiency and boiler heat exchange performance, while reducing the frequency of equipment downtime maintenance due to nozzle blockage and optimizing the automated control process of boiler sootblowing.

[0025] In this embodiment, a micro air pump 105 is fixedly installed on the top of the collection box 103, a high-pressure hose 104 is fixedly provided between the micro air pump 105 and the nozzle 106, a motor 202 is fixedly installed in the middle of the outer shell 301, and a gear 7 is fixedly installed on the outer wall of the end of the blowing nozzle 1 near the mounting cover 101.

[0026] When in use, the cleaning brush 805 is made of high-temperature resistant and wear-resistant nickel-based alloy wire, which can adapt to the high-temperature environment inside the blow nozzle 1 and maintain a long-term cleaning effect.

[0027] In this embodiment, the high-pressure hose 104 is connected to the outer wall of the slag discharge pipe 102 by several hooks, the output shaft of the motor 202 is fixedly provided with a lead screw 203, the lead screw 203 is threaded with a screw sleeve 5, and the base 2 is equipped with a hydraulic cylinder 201 by fasteners.

[0028] During use, the inclined design of the slag discharge pipe 102 allows impurities to slide down naturally by gravity. After the soot blowing is completed, the solenoid valve 803 is opened, and the micro air pump 105 sprays high-pressure airflow into the slag discharge pipe 102 through the nozzle 106. The airflow pushes the impurities along the inclined direction to move faster toward the collection box 103, avoiding wet and sticky impurities from adhering to the pipe wall, ensuring thorough slag discharge. The high-pressure airflow can also clean the inner wall of the slag discharge pipe 102 at the same time, reducing the risk of blockage.

[0029] In this embodiment, a slide rod 302 is fixedly provided on the screw sleeve 5. The slide rod 302 is slidably connected to the outer shell 301. A fixing rod 6 is fixed between the slide rod 302 and the air inlet cylinder 303. The oil cylinder 201 is fixedly connected to the bottom of the lifting seat 3 through the output shaft. The slide rods 302 are symmetrically distributed on the outer shell 301.

[0030] In use, the lifting seat 3 is raised and lowered by extending and retracting the output shaft of the hydraulic cylinder 201, thereby adjusting the overall height of the outer shell 301, the air inlet cylinder 303 and the soot blowing nozzle 1 to adapt to the height requirements of different boilers.

[0031] In this embodiment, a micro motor 8 is fixedly installed on the outer wall of the mounting cover 101, and a main gear 801 is fixedly installed on the output shaft of the micro motor 8. The main gear 801 meshes with the driven gear 7.

[0032] When in use, the collection box 103 has a pull-out box 802 inside, which can be pulled out directly to clean the residue collected inside, which is convenient, quick and can prevent impurities from scattering.

[0033] In this embodiment, a pull-out box 802 is embedded in the collection box 103, a plurality of spray pipes 806 are fixedly provided on the soot blowing nozzle 1, a heating pipe 804 is fixedly provided in the air inlet cylinder 303, a steam inlet pipe 4 is fixedly provided at the top of the air inlet cylinder 303, and a solenoid valve 803 is fixedly provided at one end of the slag discharge pipe 102 near the collection box 103.

[0034] In use, the nozzle 106 is connected to the micro air pump 105 through the high-pressure hose 104 to ensure that the high-pressure airflow can be stably delivered to the slag discharge pipe 102. The high-pressure hose 104 is fixed to the outer wall of the slag discharge pipe 102 by multiple hooks, which not only prevents the pipeline from shaking randomly, but also does not affect the normal slag discharge function of the slag discharge pipe 102.

[0035] From the above description, it can be seen that the above embodiments of this utility model achieve the following technical effects: In use, the height of the lifting seat 3 is first adjusted by the oil cylinder 201 on the base 2 so that the soot blowing nozzle 1 is aligned with the boiler inlet. Then, the motor 202 drives the lead screw 203 to rotate, which drives the screw sleeve 5 and the fixing rod 6 to move along the sliding groove on the outer shell 301, pushing the soot blowing nozzle 1 to a suitable position inside the boiler. Then, steam enters the air inlet cylinder 303 through the steam inlet pipe 4, is heated by the heating pipe 804, and is delivered to the soot blowing nozzle 1. At the same time, the micro motor 8 starts, and its output shaft drives the main gear 801 to rotate. The main gear 801 and the... The gear 7 on the outer wall of the soot blowing nozzle 1 engages, causing the soot blowing nozzle 1 to drive multiple injection pipes 806 to rotate and inject steam for soot blowing. During the rotation of the soot blowing nozzle 1, the cleaning brush 805 continuously cleans its inner wall. After soot blowing is completed, the motor 202 reverses to make the soot blowing nozzle 1 exit the boiler. Then the solenoid valve 803 opens, and the micro air pump 105 sends high-pressure airflow through the high-pressure hose 104 and nozzle 106 into the slag discharge pipe 102. The cleaned residue, under the combined action of centrifugal force, gravity and high-pressure airflow, enters the pull-out box 802 in the collection box 103 along the slag discharge pipe 102. After the operation is completed, all components can be closed.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A control device for boiler soot blowing, comprising a soot blowing nozzle (1), a base (2), and a lifting seat (3), characterized in that: A collection box (103) is installed on one side of the lifting seat (3) by fasteners. A housing (301) is fixedly installed on the upper end of the lifting seat (3). An air inlet (303) is provided at one end of the housing (301) near the soot blowing nozzle (1). An installation cover (101) is provided between the air inlet (303) and the soot blowing nozzle (1). The soot blowing nozzle (1) is movably connected to the installation cover (101). A slag discharge pipe (102) is fixedly provided at the bottom end of the installation cover (101). The other end of the slag discharge pipe (102) is fixedly connected to the top of the collection box (103). A nozzle (106) is installed at one end of the slag discharge pipe (102) near the installation cover (101) by fasteners. A cleaning brush (805) is fixedly installed inside the installation cover (101).

2. The boiler soot blowing control device according to claim 1, characterized in that, A micro air pump (105) is fixedly installed on the top of the collection box (103). A high-pressure hose (104) is fixedly provided between the micro air pump (105) and the nozzle (106). A motor (202) is fixedly installed in the middle of the outer shell (301). A gear (7) is fixedly installed on the outer wall of the blowing nozzle (1) near the mounting cover (101).

3. The boiler soot blowing control device according to claim 2, characterized in that, The high-pressure hose (104) is connected to the outer wall of the slag discharge pipe (102) by several hooks. A lead screw (203) is fixed on the output shaft of the motor (202). A screw sleeve (5) is threaded on the lead screw (203). A hydraulic cylinder (201) is installed on the base (2) by fasteners.

4. The boiler soot blowing control device according to claim 3, characterized in that, A slide rod (302) is fixedly provided on the screw sleeve (5). The slide rod (302) is slidably connected to the outer shell (301). A fixing rod (6) is fixed between the slide rod (302) and the air inlet cylinder (303). The oil cylinder (201) is fixedly connected to the bottom of the lifting seat (3) through the output shaft. The slide rods (302) are symmetrically distributed on the outer shell (301).

5. A boiler soot blowing control device according to claim 2, characterized in that, A micro motor (8) is fixedly installed on the outer wall of the mounting cover (101). A main gear (801) is fixedly installed on the output shaft of the micro motor (8). The main gear (801) meshes with the driven gear (7).

6. The boiler soot blowing control device according to claim 1, characterized in that, The collection box (103) is fitted with a pull-out box (802), the blowing nozzle (1) is fixed with several spray pipes (806), the air inlet cylinder (303) is fixed with a heating pipe (804), the top of the air inlet cylinder (303) is fixed with a steam inlet pipe (4), and the slag discharge pipe (102) is fixed with a solenoid valve (803) at one end near the collection box (103).

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