Sealing hemispherical head for guide pipe of hydraulic ash removal system

Abstract

The utility model relates to the technical field of hydraulic ash removal systems, and discloses a guide pipe sealing hemispherical head of a hydraulic ash removal system, which comprises a hemispherical seal head, and two metal hose limiting rollers are arranged at the top of the hemispherical seal head through a roller positioning compression spring component; the roller positioning and pressing spring assembly comprises a support, a sliding groove, a sliding block, a sleeve, a sliding rod and a limiting block. The support is fixedly connected to the top of the hemispherical end socket, the sliding groove is formed in one side of the support in a penetrating mode, the sliding block is slidably connected to the interior of the sliding groove, and the metal hose limiting roller is fixedly connected to one side of the sliding block. The situation that the hose lifting encoder still counts when the metal hose is jammed and does not move, and an operator in a control room cannot know that the equipment has a fault is avoided, so that the equipment utilization rate is increased, the equipment maintenance frequency is prolonged, the equipment operation time is prolonged, and the equipment maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic dust cleaning systems, in particular to a sealed hemispherical head for a guide pipe of a hydraulic dust cleaning system. Background Art

[0002] Due to the uncertainty of waste composition, the operating conditions of waste incineration waste heat boilers frequently fluctuate, causing slagging and coking in the furnace, which in turn affects heat exchange. Furthermore, due to the high viscosity of the ash produced by waste incineration, conventional steam soot blowing and shock wave cleaning methods are no longer sufficient for cleaning the secondary and tertiary flues of waste incineration boilers. To address this problem, our company has designed and manufactured a hydraulic cleaning system specifically for online cleaning of slagging and coking in the water-cooled walls of the secondary and tertiary flues of waste incineration boilers. The secondary and tertiary flues of the boiler have a rectangular horizontal cross-section. The hydraulic cleaning equipment is located between the main roof beam and the roof. Several cleaning guide holes are provided in the roof. The hydraulic cleaning unit moves along a cleaning track between these guide holes, ensuring that the entire secondary and tertiary flue walls are cleaned. A knife gate valve is installed at the entrance of each cleaning hole. When the hydraulic cleaning system is shut down, the valve closes, isolating the flue gas from the external environment. When the hydraulic cleaning system is in operation, the knife gate valve opens, and the metal hose inside the main unit enters the flue for flushing. The hydraulic cleaning system operates one cleaning hole at a time. When the main unit reaches a cleaning hole, the knife gate valve for that cleaning hole opens, and the main unit begins operation. Due to the disturbance of the cleaning water and the positive pressure that may occur inside the furnace, when the knife gate valve is open during system operation, the flue gas inside the furnace will leak out and pollute the environment. To address this issue, a hemispherical head is installed at the bottom of the main unit. During operation, the hemispherical head falls onto the furnace top guide pipe. A semicircular head is installed on the top of the guide pipe that matches the hemispherical head, separating the flue gas outside the furnace from the flue gas inside the furnace. In addition, when the main unit is in operation, a purge seal compressed air is provided, and the sealed compressed air is introduced into the hemispherical head. This not only separates the flue gas outside the furnace from the flue gas inside the furnace, but also purges the ash brought into the metal hose by entering the furnace, preventing corrosion of the metal hose.

[0003] However, in existing technology, metal hoses typically pass between two limit rollers. These limit rollers only restrict the hose's movement within a certain range, and there's no close contact between the hose and the limit rollers. If the hose becomes stuck during operation, the hose lift encoder continues counting, oblivious to the operator in the control room. This can damage the equipment and affect system operation. Therefore, a hemispherical seal head for the guide tube of a hydraulic dust removal system has been proposed to address this issue. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a hemispherical sealing head for a guide pipe of a hydraulic dust cleaning system in view of the deficiencies in the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The guide pipe sealing hemispherical head of the hydraulic dust cleaning system includes a hemispherical sealing head, the top of which is provided with two metal hose limiting rollers through a roller positioning and compression spring assembly;

[0007] The roller positioning and compression spring assembly includes a bracket, a slide groove, a slider, a sleeve, a slide rod, and a limit block;

[0008] The bracket is fixedly connected to the top of the hemispherical head, the slide groove is opened through one side of the bracket, the slider is slidably connected to the inside of the slide groove, the metal hose limiting roller is fixedly connected to one side of the slider, the sleeve is fixedly connected to one side of the bracket, one end of the sliding rod slides through the sleeve through a linear bearing, the limit block is fixedly connected to one end of the sliding rod, and a spring is provided on the outside of the sliding rod, and the left and right ends of the spring are respectively fixedly connected to the sleeve and the limit block.

[0009] Preferably, the number of the brackets, chute, slider, sleeve, slide rod and limit block is two groups, and the number of the brackets, chute, slider, sleeve, slide rod and limit block in each group is two.

[0010] Preferably, a compressed air inlet is provided at the top of the hemispherical head, a compressed air outlet is provided at the top of the hemispherical head, an air flow cleaner is fixedly connected to the top of the hemispherical head, and a hose socket is opened through the bottom end of the hemispherical head.

[0011] Preferably, a proximity switch is provided on the top of the bracket, and the number of the proximity switches is two, which are respectively provided on the front and rear sides of the metal hose limiting roller.

[0012] Preferably, a travel switch bracket plate is fixedly connected to the top of the bracket, and a travel switch is provided on the top of the travel switch bracket plate. There are two travel switches, which are arranged on the top of the metal hose limit roller. The travel switch bracket is provided to provide support force for the travel switch.

[0013] Preferably, three screw holes are provided on the outside of the hemispherical head and penetrate into the inside of the hose socket. The internal threads of the screw holes are connected with bolts, and the metal hose inserted into the hose socket can be fixed by arranging the bolts.

[0014] The utility model adopts the above technical solution, which can bring the following beneficial effects:

[0015] 1. By adding a proximity switch, an alarm will be sounded when the metal hose is stuck, preventing the hose lifting encoder from continuing to count when the metal hose is stuck. The operating personnel in the control room will not be aware that the equipment has failed, thereby increasing equipment utilization, extending the equipment maintenance frequency, increasing equipment operating time, and reducing equipment maintenance costs.

[0016] 2. Extend the inner side of the upper cover of the airflow cleaner beyond the circumference of the compressed air outlet by ten millimeters. The dust falling on site will be blocked by the upper cover and will not easily enter the compressed air outlet, thus prolonging the dust blocking time of the compressed air outlet and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the back structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the bottom structure of the utility model;

[0020] Figure 4 This is an enlarged view of area A in the present utility model.

[0021] In the figure: 1. Hemispherical head; 101. Screw hole; 102. Bolt; 2. Compressed air inlet; 3. Air flow washer; 4. Compressed air outlet; 5. Metal hose limit roller; 6. Travel switch bracket plate; 7. Travel switch; 8. Proximity switch; 9. Roller positioning and compression spring assembly; 901. Bracket; 902. Slide; 903. Slider; 904. Sleeve; 905. Slide rod; 906. Limit block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0026] See also Figure 1-4 One embodiment of the utility model is: a hemispherical head for sealing a guide pipe of a hydraulic dust cleaning system, comprising a hemispherical head 1, the top of the hemispherical head 1 being provided with two metal hose limiting rollers 5 through a roller positioning and compression spring assembly 9;

[0027] The roller positioning and compression spring assembly 9 includes a bracket 901, a slide groove 902, a slider 903, a sleeve 904, a slide rod 905, and a limit block 906;

[0028] The bracket 901 is fixedly connected to the top of the hemispherical head 1, the slide groove 902 is opened through one side of the bracket 901, the slider 903 is slidably connected to the inside of the slide groove 902, the metal hose limiting roller 5 is fixedly connected to one side of the slider 903, the sleeve 904 is fixedly connected to one side of the bracket 901, one end of the slide rod 905 slides through the sleeve 904 through a linear bearing, the limit block 906 is fixedly connected to one end of the slide rod 905, and a spring is provided on the outside of the slide rod 905. The left and right ends of the spring are respectively fixedly connected to the sleeve 904 and the limit block 906.

[0029] There are two groups of brackets 901 , slides 902 , sliders 903 , sleeves 904 , slide bars 905 , and limit blocks 906 , and each group of brackets 901 , slides 902 , sliders 903 , sleeves 904 , slide bars 905 , and limit blocks 906 has two members.

[0030] A compressed air inlet 2 is provided at the top of the hemispherical head 1, a compressed air outlet 4 is provided at the top of the hemispherical head 1, an air flow washer 3 is fixedly connected to the top of the hemispherical head 1, and a hose socket is opened through the bottom end of the hemispherical head 1.

[0031] A proximity switch 8 is provided on the top of the bracket 901 . There are two proximity switches 8 , which are respectively provided on the front and rear sides of the metal hose limiting roller 5 .

[0032] The top of the bracket 901 is fixedly connected to a travel switch bracket plate 6 , and the top of the travel switch bracket plate 6 is provided with a travel switch 7 . There are two travel switches 7 , which are provided on the top of the metal hose limit roller 5 .

[0033] Three screw holes 101 are provided on the outside of the hemispherical head 1 and penetrate into the inside of the hose socket. Bolts 102 are threadedly connected to the inside of the screw holes 101 .

[0034] Working principle: By adding a proximity switch 8 and a roller positioning and clamping spring assembly 9, the metal hose and the metal hose limit roller 5 are compressed when the equipment is running. When the metal hose and the limit roller have relative movement, the proximity switch 8 sends a signal. If the metal hose and the limit roller do not have relative movement, the system alarms and the operator notifies the maintenance personnel to go to the site for inspection. The roller positioning and clamping spring assembly 9 is used to adjust the position of the metal hose limit roller 5 so that the metal hose and the metal hose limit roller 5 are always kept in a compressed state. The inner side of the upper cover of the airflow washer 3 is extended beyond the circumference of the compressed air outlet 4 by ten millimeters. The dust on site is blocked by the upper cover and is not easy to enter the compressed air outlet 4, which prolongs the dust blocking time of the compressed air outlet 4 and the service life of the equipment.

[0035] This utility model provides a hemispherical seal head for a guide pipe in a hydraulic dust cleaning system. There are many methods and approaches to implement this technical solution. The above is only a preferred embodiment of the utility model. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the utility model, and such improvements and modifications should also be considered within the scope of protection of the utility model. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A hemispherical head for sealing a guide pipe of a hydraulic dust cleaning system, comprising a hemispherical head (1), characterized in that: The top of the hemispherical head (1) is provided with two metal hose limiting rollers (5) via a roller positioning and compression spring assembly (9); The roller positioning and pressing spring assembly (9) comprises a bracket (901), a sliding groove (902), a slider (903), a sleeve (904), a sliding rod (905), and a limiting block (906); The bracket (901) is fixedly connected to the top of the hemispherical head (1), the slide groove (902) is opened through one side of the bracket (901), the slider (903) is slidably connected to the inside of the slide groove (902), the metal hose limiting roller (5) is fixedly connected to one side of the slider (903), the sleeve (904) is fixedly connected to one side of the bracket (901), one end of the slide rod (905) slides through the sleeve (904) through a linear bearing, the limit block (906) is fixedly connected to one end of the slide rod (905), and a spring is provided on the outside of the slide rod (905), and the left and right ends of the spring are fixedly connected to the sleeve (904) and the limit block (906) respectively.

2. The hemispherical sealing head for the guide pipe of the hydraulic dust cleaning system according to claim 1 is characterized in that: The number of the bracket (901), the slide groove (902), the slider (903), the sleeve (904), the slide rod (905), and the limit block (906) is two groups, and the number of the bracket (901), the slide groove (902), the slider (903), the sleeve (904), the slide rod (905), and the limit block (906) in each group is two.

3. The hemispherical sealing head for the guide pipe of the hydraulic dust cleaning system according to claim 2 is characterized in that: The top of the hemispherical head (1) is provided with a compressed air inlet (2), the top of the hemispherical head (1) is provided with a compressed air outlet (4), the top of the hemispherical head (1) is fixedly connected with an air flow washer (3), and the bottom end of the hemispherical head (1) is penetrated by a hose socket.

4. The hemispherical sealing head for the guide pipe of the hydraulic dust cleaning system according to claim 3 is characterized by: A proximity switch (8) is provided on the top of the bracket (901), and the number of the proximity switches (8) is two, and they are respectively provided on the front and rear sides of the metal hose limiting roller (5).

5. The hemispherical sealing head for the guide pipe of the hydraulic dust cleaning system according to claim 4 is characterized in that: The top of the bracket (901) is fixedly connected to a travel switch bracket plate (6), and the top of the travel switch bracket plate (6) is provided with a travel switch (7). The number of the travel switches (7) is two and they are provided on the top of the metal hose limiting roller (5).

6. The hemispherical sealing head for the guide pipe of the hydraulic dust cleaning system according to claim 5, characterized in that: The hemispherical sealing head (1) is provided with three screw holes (101) on the outside thereof and penetrates into the inside of the hose socket, and the internal threads of the screw holes (101) are connected with bolts (102).

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