Liquid level measuring device for slagging machine of waste incinerator

Abstract

The utility model relates to the technical field of slag machine, and disclose a kind of liquid level measuring device of garbage incinerator slag machine, including the body water tank of slag machine, external water tank, coupling pipeline, the input end of coupling pipeline is equipped with stop valve, bypass connection with the blowdown main pipe of the blowdown of coupling pipeline is to the body water tank, blowdown pump is equipped on blowdown main pipe, external water tank is equipped with the sleeve pipe of vertical extension, sleeve pipe is equipped with liquid level meter, water hole is arranged on the sleeve pipe, and external water tank is equipped with the jam-removing mechanism in.The blowdown pump can be started periodically or as required, and the sundries in the pipeline can be discharged in time, so that the blockage problem caused by pipe diameter design, installation method or water quality impurities and the like can be effectively avoided, the normal communication of the water level of the body water tank and the external water tank is ensured, and the effectiveness of the measurement result of the liquid level meter is guaranteed.In addition, the jam-removing mechanism in the external water tank can periodically or as required remove the sundries on the surface of the sleeve pipe.

Description

Technical Field

[0001] This utility model relates to the field of slag discharge machine technology, and in particular to a liquid level measuring device for a slag discharge machine of a waste incinerator. Background Technology

[0002] In a waste incinerator, the ash produced after the fuel is burned at high temperatures is pushed by the grate to the ash pit where a special ash removal device with a watertight self-sealing function (such as a hydraulically driven mechanical ash remover) is used. This ash remover is equipped with a main water tank to cool the high-temperature ash, form a water seal to isolate air, and reduce dust. The high-temperature ash continuously enters the main water tank, which continuously heats the water and causes a large amount of water to evaporate. Furthermore, when the wet ash is removed from the water tank, it carries away some water. Therefore, to ensure the stability of the water seal and cooling effect, the main water tank of the ash remover must be replenished with water in a timely manner to maintain the set water level.

[0003] Because the liquid level fluctuates when ash is discharged from the waste incinerator, and foam, scum and other floating debris are generated during the normal operation of the ash discharge machine, the liquid level in the main water tank is disturbed. Existing patent (CN 210664676U) provides a liquid level measurement method, which uses an external water tank, a connecting pipe and a liquid level gauge sleeve to balance the water levels in the main water tank and the external water tank by using the connecting pipe, and places the ultrasonic liquid level gauge inside the sleeve to reduce the influence of foam, scum and other interfering substances.

[0004] However, in practical applications, the above-mentioned liquid level measurement method has the following problems: 1. Due to factors such as pipe diameter design, installation method, or water quality impurities, the connecting pipe is prone to blockage by slag particles, fibrous impurities, or sludge produced by waste incineration after a period of use. When the connecting pipe is blocked, the water levels of the main water tank and the external water tank cannot be properly connected, resulting in distorted water level in the external water tank and affecting the measurement results of the ultrasonic level gauge.

[0005] 2. The water holes on the sleeve wall of the level gauge are used to balance the water levels inside and outside the sleeve. However, scum, suspended matter or scale generated during the waste incineration process can easily adhere to the water holes or even block them directly, causing a deviation between the water level inside the sleeve and the actual water level outside, which in turn affects the measurement accuracy of the ultrasonic level gauge.

[0006] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a liquid level measuring device for a waste incinerator slag discharge machine, which aims to solve the problem of blockage of the water permeable holes on the connecting pipes and sleeves.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A liquid level measuring device for a waste incinerator ash discharge machine includes a main water tank, an external water tank, and a connecting pipe connecting the main water tank and the external water tank. The input end of the connecting pipe is lower than the output end, and a shut-off valve is provided at the input end of the connecting pipe. A bypass connection is made to the connecting pipe to a main drain pipe leading to the main water tank, and a drain pump is provided on the main drain pipe. A vertically extending sleeve is provided inside the external water tank, and a liquid level gauge is provided inside the sleeve. Water permeable holes are arranged on the sleeve, and water in the external water tank enters the sleeve through the water permeable holes on the sleeve, so that the water levels inside and outside the sleeve are consistent. The external water tank is provided with a cleaning mechanism for removing debris adhering to the outer surface of the sleeve.

[0009] As a further improvement to the above technical solution, the main sewage pipe is also connected to a branch sewage pipe for connecting to the bottom of the external water tank.

[0010] As a further improvement to the above technical solution, the unblocking mechanism includes an ultrasonic transducer, and a protrusion is integrally formed on the top side wall of the sleeve, with an installation end face formed on the protrusion for connection with the ultrasonic transducer.

[0011] As a further improvement to the above technical solution, mounting ears are formed on both sides of the protrusion, the ultrasonic transducer is covered by a power supply cover and forms an electrical connection, and the power supply cover is connected to the mounting ears by screws.

[0012] As a further improvement to the above technical solution, the unblocking mechanism includes a collar fitted around the outer periphery of the sleeve, bristles disposed on the inner ring of the collar and facing the side wall of the sleeve, and a lifting structure for driving the collar to move up and down.

[0013] As a further improvement to the above technical solution, the connecting pipe is equipped with a filter near the output end.

[0014] As a further improvement to the above technical solution, the filter includes a housing connected to a connecting pipe, a filter plate pluggably inserted into the housing, and an electric push rod for inserting and removing the filter plate; a filter screen is provided in the middle of the filter plate.

[0015] As a further improvement to the above technical solution, the filter plate extends through the left and right sides of the housing, and the filter plate is inserted and pulled out in the left and right direction with two filter screens arranged in the insertion and pulling direction, the two filter screens being located on the inner and outer sides of the housing respectively.

[0016] As a further improvement to the above technical solution, a mounting plate is provided on the top of the housing, and a connecting arm is provided on the top of one end of the filter plate; the electric push rod is fixed on the mounting plate, and the push rod of the electric push rod passes through the mounting plate and connects with the connecting arm of the filter plate.

[0017] As a further improvement to the above technical solution, the level gauge is an ultrasonic level gauge.

[0018] The beneficial effects of this utility model are as follows: The liquid level measuring device for the waste incinerator slag discharge machine provided by this utility model, by setting the connecting pipe at an upward inclination and installing a main drain pipe and a drain pump for sewage treatment, utilizes gravity and water flow characteristics to reduce impurity deposition. Furthermore, the drain pump is activated periodically or as needed to promptly remove debris from the pipe, effectively avoiding blockages caused by pipe diameter design, installation method, or water quality impurities. This ensures normal communication between the main water tank and the external water tank, guaranteeing the validity of the liquid level gauge measurement results. In addition, the unblocking mechanism inside the external water tank can periodically or as needed remove debris from the outer surface of the casing, preventing scum, suspended matter, or scale from adhering to or even blocking the permeable holes. This ensures that the water level inside the casing matches the actual external water level, significantly improving the measurement accuracy of the liquid level gauge. This provides accurate and reliable data support for the water replenishment control of the slag discharge machine's main water tank, stabilizing the water seal and cooling effects. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the liquid level measuring device provided by this utility model.

[0020] Figure 2 A schematic diagram of an ultrasonic transducer mounted on a sleeve.

[0021] Figure 3 This is a three-dimensional diagram of a blockage-clearing mechanism.

[0022] Figure 4 This is a 3D view of the filter.

[0023] Figure 5 This is a schematic diagram of the filter housing.

[0024] Figure 6 This is a schematic diagram of the filter plate structure.

[0025] Explanation of main component symbols: 1-Main water tank, 2-External water tank, 3-Connecting pipe, 4-Stop valve, 51-Main drain pipe, 52-Branch drain pipe, 53-Drain pump, 6-Sleeve, 61-Water permeable hole, 62-Protrusion, 63-Mounting end face, 64-Mounting ear, 7-Level gauge, 8-Unblocking mechanism, 81-Ultrasonic transducer, 82-Ring, 83-Brush bristles, 84-Lifting structure, 85-Power supply cover, 9-Filter, 91-Housing, 92-Filter plate, 93-Electric push rod, 94-Filter screen, 95-Mounting plate, 96-Connecting arm, 97-Sealing ring. Detailed Implementation

[0026] This utility model provides a liquid level measuring device for a waste incinerator ash discharge machine. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0027] Please see Figures 1 to 3 This utility model provides a liquid level measuring device for a waste incinerator slag discharge machine, including a main water tank 1, an external water tank 2, and a connecting pipe 3 connecting the main water tank 1 and the external water tank 2. The height of the input end of the connecting pipe 3 is lower than that of the output end. A shut-off valve 4 is provided at the input end of the connecting pipe 3. A bypass connection is provided on the connecting pipe 3 to a main sewage discharge pipe 51 that discharges to the main water tank 1. A sewage discharge pump 53 is provided on the main sewage discharge pipe 51. A vertically extending sleeve 6 is provided inside the external water tank 2. A liquid level gauge 7 is provided inside the sleeve 6. Water permeable holes 61 are arranged on the sleeve 6. Water in the external water tank 2 enters the sleeve 6 through the water permeable holes 61 on the sleeve 6, so that the water level inside and outside the sleeve 6 is consistent. A cleaning mechanism 8 for removing debris attached to the outer surface of the sleeve 6 is provided inside the external water tank 2.

[0028] When the liquid level measuring device of the waste incinerator slag discharge machine is working, the water in the main water tank 1 flows into the external water tank 2 through the connecting pipe 3. Since the input end of the connecting pipe 3 is lower than the output end, the water level of the main water tank 1 and the external water tank 2 is balanced by the siphon principle and gravity. The shut-off valve 4 is normally open and can control the inflow of water. When maintenance or repair is required, the shut-off valve 4 is closed to prevent water flow. The sewage discharge main pipe 51 is bypassed to the connecting pipe 3. When the sewage pump 53 starts, it can discharge any slag particles, fibrous impurities, sludge, and other debris that may be present in the connecting pipe 3 back to the main water tank 1 through the sewage discharge main pipe 51, preventing impurities from accumulating and clogging the connecting pipe 3.

[0029] The sleeve 6 inside the external water tank 2 is equipped with a water permeable hole 61. Water from the external water tank 2 enters the sleeve 6 through the water permeable hole 61, ensuring that the water level inside the sleeve 6 matches the water level in the external water tank 2. A level gauge 7 is installed inside the sleeve 6 to measure the water level inside the sleeve 6, indirectly obtaining the water level of the main water tank 1. The unclogging mechanism 8 can work periodically to remove scum, suspended solids, scale, and other debris adhering to the outer surface of the sleeve 6 through physical or mechanical means, ensuring that the water permeable hole 61 is not blocked, maintaining the consistency of the water level inside and outside the sleeve 6, and ensuring the accuracy of the measurement data from the level gauge 7.

[0030] The liquid level measuring device of the waste incinerator slag discharge machine provided by this utility model is designed to discharge sewage by setting the connecting pipe 3 at an upward angle and installing a sewage discharge main pipe 51 and a sewage pump 53. On the one hand, it utilizes gravity and water flow characteristics to reduce impurity deposition. On the other hand, the sewage pump 53 can be started periodically or as needed to discharge debris in the pipe in a timely manner, effectively avoiding blockage problems caused by pipe diameter design, installation method or water quality impurities, ensuring normal water level communication between the main water tank 1 and the external water tank 2, and ensuring the validity of the liquid level gauge 7 measurement results.

[0031] In addition, the unblocking mechanism 8 inside the external water tank 2 can periodically or as needed remove debris from the outer surface of the sleeve 6, preventing scum, suspended matter or scale from adhering around the water permeable hole 61 or even blocking the water permeable hole 61, ensuring that the water level inside the sleeve 6 is consistent with the actual water level outside, thereby significantly improving the measurement accuracy of the level gauge 7, providing accurate and reliable data support for the water replenishment control of the slag discharge machine body water tank 1, and stabilizing the water seal effect and cooling effect.

[0032] In practical operation, heavy slag particles, sludge, and other impurities can easily accumulate at the bottom of the external water tank 2. When a large amount of impurities accumulate at the bottom of the external water tank 2, it will affect the flow of water in the tank and thus interfere with the accuracy of water level balance. Therefore, the main drain pipe 51 is also connected to a branch drain pipe 52 for connecting to the bottom of the external water tank 2. The branch drain pipe 52 can directly suck out these debris deposited at the bottom of the external water tank 2. Combined with the cleaning of the connecting pipes by the main drain pipe 51, this comprehensively reduces the accumulation of impurities in various parts of the device, greatly improves the drainage effect, reduces the risk of blockage, ensures the long-term stable operation of the liquid level measuring device, and improves the timeliness and accuracy of the liquid level gauge 7 measurement.

[0033] In one implementation, see Figure 3 As shown, the unclogging mechanism 8 includes a collar 82 fitted around the outer edge of the sleeve, bristles 83 disposed on the inner ring of the collar 82 facing the side wall of the sleeve, and a lifting structure 84 for driving the collar 82 to move up and down. The lifting structure 84 drives the collar 82 to move up and down automatically. The bristles 83 on the inner ring of the collar 82 can closely fit the side wall of the sleeve. As the collar 82 moves up and down, the bristles 83 can thoroughly clean the particulate impurities, suspended solids, algae, and other blockages attached to the surface and inside the permeable hole 61. Whether it is fine impurities adhering to the hole wall or clumps of pollutants, they can be effectively removed by the mechanical friction of the bristles 83, continuously keeping the permeable hole 61 unobstructed, ensuring normal fluid flow, and avoiding the impact of blockage on the accuracy of the water level inside the sleeve 6. The lifting structure 84 can be fixed on the external water tank 2 and is a vertically downward linear actuator. The linear actuator can be a pneumatic push rod, an electric push rod, a hydraulic push rod, a linear module, a linear module, a lead screw mechanism, etc. Its main function is to provide the output end of linear motion.

[0034] In another implementation, see Figure 1 and Figure 2 As shown, the unblocking mechanism 8 includes an ultrasonic transducer 81 (such as an ultrasonic oscillating plate). A protrusion 62 is integrally formed on the top sidewall of the sleeve 6. An installation end face 63 is formed on the protrusion 62 to connect with the ultrasonic transducer 81, which not only ensures the effective area of ​​the ultrasonic transducer 81, but also forms a reliable mounting point (which can be fixed by adhesive or welding). Compared with mechanical scraping, the ultrasonic transducer 81 uses the powerful energy generated by high-frequency vibration to quickly and thoroughly loosen and remove various debris attached to the outer surface of the sleeve 6. Whether it is sticky sludge, hard scale, or fine fibrous impurities, they can all be effectively removed. After the debris is removed, the water permeable hole 61 on the sleeve 6 remains unobstructed, ensuring that the water level in the sleeve 6 accurately reflects the real water level of the external water tank 2 in real time. This provides a reliable basis for the water replenishment control of the slag discharge machine's main water tank 1, avoiding problems such as water seal failure or insufficient cooling caused by liquid level measurement errors.

[0035] Furthermore, mounting ears 64 are formed on both sides of the protrusion 62. The ultrasonic transducer 81 is covered by a power supply cover 85 and electrically connected to it. The power supply cover 85 is connected to the mounting ears 64 by screws. The power supply cover 85 covers the ultrasonic transducer 81 and provides electrical connection. This design not only effectively protects the internal electrical circuits from external environmental factors (such as dust and moisture) and reduces the risk of short circuits or leakage, but also reduces electromagnetic interference, ensures stable transmission of electrical signals, and improves the stability and reliability of the ultrasonic transducer 81.

[0036] To ensure the long-term stability of the sleeve 6, the bottom end of the sleeve 6 is fixed to the bottom surface of the external water tank 2 by welding.

[0037] To reduce the amount of slag and impurities in the water entering the external water tank 2, a filter 9 is installed near the output end of the connecting pipe 3. The filter 9 intercepts contaminants in advance, significantly reducing the amount of impurities reaching the sleeve 6, allowing water to flow more smoothly through the permeable holes 61 and maintaining the normal permeability of the sleeve 6. This avoids problems such as poor water flow and pressure imbalance caused by blockage of the permeable holes 61, ensuring the hydraulic performance and working efficiency of the system, and reducing maintenance costs and downtime caused by cleaning blockages.

[0038] For details, please refer to Figures 4 to 6The filter 9 includes a housing 91 connected to the connecting pipe 3, a filter plate 92 detachably inserted into the housing 91, and an electric push rod 93 for inserting and removing the filter plate 92; a filter screen 94 is provided in the middle of the filter plate 92. When the filter screen 94 traps a large amount of impurities and becomes clogged, it can be quickly pulled out by the electric push rod 93 for cleaning or replacement, greatly shortening maintenance time, reducing equipment downtime, and improving the continuous operation efficiency of the system. A sealing ring is provided on the housing 91 to ensure the sealing of connections with various components and prevent water leakage.

[0039] Furthermore, the filter plate 92 extends through the left and right sides of the housing 91. The filter plate 92 is insertable and removable in the left-right direction, and two filter screens 94 are arranged in the insertion and removal direction, located on the inner and outer sides of the housing 91, respectively. With this arrangement, when one filter screen 94 needs cleaning due to intercepting a large amount of impurities, the filter plate 92 can be quickly switched to a clean filter screen 94 to perform the filtration work by inserting and removing it in the left-right direction. This significantly reduces downtime, eliminates the need for equipment interruption while waiting for cleaning, avoids production stagnation or system performance degradation caused by downtime, and greatly improves the continuous working capability of the equipment.

[0040] The top of the housing 91 is provided with a mounting plate 95, and one end of the filter plate 92 is provided with a connecting arm 96. The electric push rod 93 is fixed on the mounting plate 95, and the push rod of the electric push rod 93 passes through the mounting plate 95 and connects to the connecting arm 96 of the filter plate 92. The mounting plate 95 serves as a fixed base for the electric push rod 93, providing it with a stable support point and preventing the electric push rod 93 from shaking or displacing due to uneven force during the insertion and removal of the filter plate 92. This ensures that the electric push rod 93 can accurately transmit power to the filter plate 92. The direct connection between the connecting arm 96 and the push rod achieves efficient force transmission, making the filter plate 92 run smoothly and be accurately positioned during insertion and removal. This prevents the filter plate 92 from being misaligned or jammed due to transmission deviation, ensuring normal switching of the filtration function.

[0041] In this embodiment, the level gauge 7 is an ultrasonic level gauge 7. The ultrasonic level gauge 7 measures the liquid level by emitting ultrasonic waves and receiving the reflected echoes. It does not require direct contact with the liquid being measured, thus avoiding the influence of liquid corrosion, viscosity, high temperature and other characteristics on the measuring element. It is suitable for complex media scenarios such as sewage, chemical solutions, and oil.

[0042] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A liquid level measuring device for a waste incinerator ash discharge machine, characterized in that, The system includes a main water tank for the slag discharge machine, an external water tank, and a connecting pipe connecting the main water tank and the external water tank. The input end of the connecting pipe is lower than the output end, and a shut-off valve is provided at the input end of the connecting pipe. A bypass connection is provided on the connecting pipe to a main drain pipe that discharges to the main water tank. A drain pump is provided on the main drain pipe. A vertically extending sleeve is provided inside the external water tank. A level gauge is provided inside the sleeve, and water perforations are arranged on the sleeve. Water from the external water tank enters the sleeve through the water perforations on the sleeve, making the water level inside and outside the sleeve the same. The external water tank is provided with a cleaning mechanism for removing debris adhering to the outer surface of the sleeve.

2. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 1, characterized in that, The main sewage pipe is also connected to a branch sewage pipe for connecting to the bottom of the external water tank.

3. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 1, characterized in that, The unblocking mechanism includes an ultrasonic transducer, and a protrusion is integrally formed on the top side wall of the sleeve, with an installation end face formed on the protrusion for connection with the ultrasonic transducer.

4. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 3, characterized in that, Mounting ears are formed on both sides of the protrusion. The ultrasonic transducer is covered by a power supply cover and forms an electrical connection. The power supply cover is connected to the mounting ears by screws.

5. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 1, characterized in that, The unblocking mechanism includes a collar fitted around the outer edge of the sleeve, bristles disposed on the inner ring of the collar and facing the side wall of the sleeve, and a lifting structure for driving the collar to move up and down.

6. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 1, characterized in that, The connecting pipe is equipped with a filter near the output end.

7. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 6, characterized in that, The filter includes a housing connected to a connecting pipe, a filter plate pluggably inserted into the housing, and an electric push rod for inserting and removing the filter plate; a filter screen is provided in the middle of the filter plate.

8. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 7, characterized in that, The filter plate extends through the left and right sides of the housing. The filter plate is inserted and removed in the left and right direction, and two filter screens are arranged in the insertion and removal direction. The two filter screens are located on the inner and outer sides of the housing, respectively.

9. The liquid level measuring device for the slag discharge machine of a waste incinerator according to claim 8, characterized in that, The top of the housing is provided with a mounting plate, and one end of the filter plate is provided with a connecting arm; the electric push rod is fixed on the mounting plate, and the push rod of the electric push rod passes through the mounting plate and connects with the connecting arm of the filter plate.

10. The liquid level measuring device for the ash discharge machine of a waste incinerator according to any one of claims 1-9, characterized in that, The level gauge is an ultrasonic level gauge.

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