A slag discharge machine that prevents sludge backflow

Abstract

This invention discloses a slag discharge machine to prevent silt backflow, comprising a slag discharge machine body, a first level gauge, a second level gauge, a first water replenishment mechanism, a second water replenishment mechanism, and a control system. The first level gauge measures the liquid level in the front chamber of the water tank; the second level gauge measures the liquid level in the rear chamber of the water tank; the first water replenishment mechanism replenishes water to the front chamber of the water tank; the second water replenishment mechanism replenishes water to the rear chamber of the water tank. The control system is communicatively connected to the first level gauge, the second level gauge, the first water replenishment mechanism, and the second water replenishment mechanism, and can control the opening and closing of the first water replenishment mechanism and the second water replenishment mechanism based on the measured value of the first level gauge during the scraper's movement, so as to keep the liquid levels in the front and rear chambers of the water tank consistent during the scraper's movement. This solution can effectively reduce water flow disturbance, prevent silt from accumulating in the rear chamber of the water tank, reduce the workload of personnel maintenance, and ensure the service life of the slag discharge machine.

Description

Technical Field

[0001] This invention relates to the field of slag discharge machine technology, and in particular to a slag discharge machine that prevents the backflow of mud and sand. Background Technology

[0002] The slag discharger is located below the grate outlet of the waste incinerator. Slag falls into the slag discharger through the slag discharge channel. Inside the slag discharger, the slag is extinguished and cooled. Driven by a slide ram, the slag is pushed towards the discharge port and discharged. A water tank is installed inside the slag discharger to rapidly cool the slag. As the scraper moves forward, the water flow in the tank continuously agitates the slag, causing sediment to accumulate and settle in the rear chamber of the tank. Accumulated sediment can affect the service life of the slag discharger and requires maintenance personnel to clean the water tank regularly, wasting manpower and resources. Summary of the Invention

[0003] In view of this, the present invention provides a slag discharge machine that prevents backflow of sludge, which can effectively reduce the disturbance of water flow and avoid the accumulation of sludge in the rear chamber of the water tank, thereby reducing the workload of personnel maintenance and ensuring the service life of the slag discharge machine.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A slag discharger that prevents backflow of sludge includes a slag discharger body, and also includes: a first level gauge, a second level gauge, a first water replenishment mechanism, a second water replenishment mechanism, and a control system;

[0006] The first level gauge is used to measure the level in the front chamber of the main water tank of the slag discharge machine;

[0007] The second level gauge is used to measure the liquid level in the rear chamber of the water tank;

[0008] The first water replenishment mechanism is used to replenish water to the front chamber of the water tank;

[0009] The second water replenishment mechanism is used to replenish water to the rear chamber of the water tank;

[0010] The control system is communicatively connected to the first level gauge, the second level gauge, the first water replenishment mechanism, and the second water replenishment mechanism, respectively. During the movement of the scraper of the slag discharge machine body, it can control the opening and closing of the first water replenishment mechanism according to the measured value of the first level gauge, and can control the opening and closing of the second water replenishment mechanism according to the measured value of the second level gauge, so as to keep the liquid level of the front chamber and the rear chamber of the water tank consistent during the movement of the scraper.

[0011] Preferably, the first water replenishment mechanism includes: a first water replenishment pipe and a first water replenishment solenoid valve;

[0012] One end of the first water supply pipe is used to connect to the water supply tank, and the other end is located in the front chamber of the water tank. The first water supply solenoid valve is located in the middle part of the first water supply pipe.

[0013] The second water replenishment mechanism includes: a second water replenishment pipe and a second water replenishment solenoid valve;

[0014] One end of the second water supply pipe is used to connect to the water supply tank, and the other end is located in the rear chamber of the water tank. The second water supply solenoid valve is located in the middle part of the second water supply pipe.

[0015] The control system is communicatively connected to the first water replenishment solenoid valve and the second water replenishment solenoid valve, respectively. During the movement of the scraper, it can control the opening and closing of the first water replenishment solenoid valve according to the measured value of the first level gauge, and can control the opening and closing of the second water replenishment solenoid valve according to the measured value of the second level gauge, so as to keep the liquid level in the front chamber and the rear chamber of the water tank consistent during the movement of the scraper.

[0016] Preferably, the first water replenishment mechanism further includes a first float valve;

[0017] The first float valve is located at the liquid level in the front chamber of the water tank. The first float valve is communicatively connected to the first water replenishment solenoid valve and can control the opening and closing of the first water replenishment solenoid valve according to the liquid level in the front chamber.

[0018] The second water replenishment mechanism also includes a second float valve;

[0019] The second float valve is located at the liquid level in the rear chamber of the water tank. The second float valve is communicatively connected to the second water replenishment solenoid valve and can control the opening and closing of the second water replenishment solenoid valve according to the liquid level in the rear chamber.

[0020] Preferably, the first level gauge and / or the second level gauge are electrode-type level gauges.

[0021] Preferably, it further includes:

[0022] A baffle plate is installed on the bottom wall of the water tank and located behind the scraper.

[0023] Preferably, the baffle is arranged in a stepped manner on the inclined bottom wall of the water tank, which is lower at the front and higher at the back.

[0024] Preferably, the baffle plate is sealed and welded to the inclined bottom wall of the water tank, which is lower at the front and higher at the rear.

[0025] As can be seen from the above technical solution, the slag discharge machine for preventing sludge backflow provided by the present invention first measures the low liquid level of the front or rear chamber of the water tank through a level gauge during the scraper movement, and then feeds it back to the control system. Then, the control system controls the water replenishment mechanism corresponding to the low liquid level side to open and continuously replenish water until the liquid levels on both sides of the water tank are consistent before stopping the water replenishment. Thus, the liquid levels on both sides of the water tank can be kept consistent during the scraper movement, which can effectively reduce the disturbance of water flow and avoid the accumulation of sludge in the rear chamber of the water tank, thereby reducing the workload of personnel maintenance and ensuring the service life of the slag discharge machine. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the slag discharge machine for preventing sludge backflow provided in an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the water level control principle of the slag discharge machine for preventing sludge backflow provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the baffle plate provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the arrangement of the level gauge provided in an embodiment of the present invention.

[0031] 1 is the housing (box), 2 is the scraper, 3 is the baffle, 4 is the first level gauge, 5 is the first float valve, 6 is the first water supply solenoid valve, 7 is the second level gauge, 8 is the first water supply pipe, 9 is the second water supply pipe, 10 is the second water supply solenoid valve, 11 is the second float valve, 12 is the slag discharge machine, and 13 is the hydraulic cylinder (oil cylinder). Detailed Implementation

[0032] The slag discharger uses a scraper to separate the front and rear chambers of the water tank, but this separation is not complete and a 3-5mm gap remains. Water carrying silt accumulates in the rear chamber through this gap. When the silt accumulates to a certain extent, it affects the water level control device, eventually damaging it and causing the slag discharger to eject dry slag, thus affecting its lifespan. To address this, this solution discloses a slag discharger designed to prevent silt backflow. Level gauges are installed in both the front and rear chambers of the water tank to ensure consistent water levels, reducing water flow agitation and minimizing silt backflow into the rear chamber. Furthermore, this solution adds a baffle plate behind the scraper to block the water flow as it recedes, further reducing silt backflow into the rear tank.

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The slag discharge machine for preventing sludge backflow provided in this embodiment of the invention, such as... Figure 1 As shown, the slag discharger includes the main body of the slag discharger. The slag discharger for preventing backflow of mud and sand also includes: a first level gauge 4, a second level gauge 7, a first water replenishment mechanism, a second water replenishment mechanism, and a control system.

[0035] The first level gauge 4 is used to measure the liquid level in the front chamber (front area of ​​the tank) of the main water tank of the slag discharge machine;

[0036] The second level gauge 7 is used to measure the liquid level in the rear chamber (the rear area of ​​the water tank);

[0037] The first water replenishment mechanism is used to replenish water to the front chamber of the water tank;

[0038] The second water replenishment mechanism is used to replenish water to the rear chamber of the water tank;

[0039] The control system is communicatively connected to the first level gauge 4, the second level gauge 7, the first water replenishment mechanism, and the second water replenishment mechanism. During the movement of the scraper 2 of the slag discharge machine body, it can control the opening and closing of the first water replenishment mechanism according to the measurement value of the first level gauge 4, and can control the opening and closing of the second water replenishment mechanism according to the measurement value of the second level gauge 7, so as to keep the liquid level of the front chamber and the rear chamber of the water tank consistent during the movement of the scraper 2.

[0040] It should be noted that, as Figure 4As shown, the first level gauge 4 is installed on the front housing of the slag discharger and is used to measure the liquid level in the front chamber of the water tank; the second level gauge 7 is installed on the rear housing of the slag discharger and is used to measure the liquid level in the rear chamber of the water tank; the outlet of the first water replenishment mechanism is located in the front chamber of the water tank and above the liquid level in the front chamber; the outlet of the second water replenishment mechanism is located in the rear chamber of the water tank and above the liquid level in the rear chamber; additionally, as... Figure 1 As shown, scraper 2, driven by hydraulic cylinder 13, reciprocates within the housing 1 of the slag discharger. During the forward movement of scraper 2 to push out slag, the liquid level in the rear chamber of the water tank is higher than that in the front chamber. At this time, the measured value of the first level gauge 4 is lower than that of the second level gauge 7, and the first level gauge 4 feeds back the low measured value to the control system. The control system then controls the first water replenishment mechanism to continuously replenish water to the front chamber until the liquid levels in the front and rear chambers are consistent. This ensures that the liquid levels in the front and rear chambers of the water tank remain consistent during the forward movement of scraper 2, reducing the agitation of the water flow in the tank. Consequently, it is difficult for silt carried in the water flow to accumulate in the rear chamber of the water tank, allowing the scraper to effectively push out the sludge. This effectively controls the accumulation of silt in the rear chamber of the water tank, thereby reducing the failure rate of the leveling devices and ensuring the service life of the slag discharger. Of course, continuously replenishing water to the side of the water tank with a low liquid level will not raise the overall water level of the tank, because the expelled slag will carry away some water. In addition, during the process of scraper 2 moving backward to reset, the liquid level in the rear chamber of the water tank is lower than the liquid level in the front chamber. At this time, the measured value of the first liquid level gauge 4 is higher than the measured value of the second liquid level gauge 7. Then, the control system controls the second water replenishment mechanism to replenish water in the same way as above, which will not be described again here.

[0041] In other words, during the movement of scraper 2, this solution first measures the low liquid level in the front or rear chamber of the water tank using a level gauge, and then feeds this information back to the control system. The control system then controls the water replenishment mechanism on the low liquid level side to open and continuously replenish water until the liquid levels on both sides of the water tank are consistent. This ensures that the liquid levels on both sides of the water tank remain consistent during the movement of scraper 2, effectively reducing water flow disturbance and preventing sediment from accumulating in the rear chamber of the water tank. This reduces maintenance workload, lowers the failure rate of leveling devices, and ensures the service life of the slag discharge machine.

[0042] As can be seen from the above technical solution, the slag discharge machine for preventing sludge backflow provided in this embodiment of the invention first measures the low liquid level of the front or rear chamber of the water tank through a level gauge during the scraper movement, and then feeds it back to the control system. Then, the control system controls the water replenishment mechanism corresponding to the low liquid level side to open and continuously replenish water until the liquid levels on both sides of the water tank are consistent before stopping the water replenishment. Thus, the liquid levels on both sides of the water tank can be kept consistent during the scraper movement, which can effectively reduce the disturbance of water flow and avoid the accumulation of sludge in the rear chamber of the water tank, thereby reducing the workload of personnel maintenance and ensuring the service life of the slag discharge machine.

[0043] In this plan, such as Figure 2 As shown, the first water replenishment mechanism includes: a first water replenishment pipe 8 and a first water replenishment solenoid valve 6;

[0044] One end of the first water supply pipe 8 is used to connect to the water supply tank, and the other end is located in the front chamber of the water tank and above the liquid level. The first water supply solenoid valve 6 is located in the middle part of the first water supply pipe 8.

[0045] The second water supply mechanism includes: a second water supply pipe 9 and a second water supply solenoid valve 10;

[0046] One end of the second water supply pipe 9 is used to connect to the water supply tank, and the other end is located in the rear chamber of the water tank and above the liquid level. The second water supply solenoid valve 10 is located in the middle part of the second water supply pipe 9.

[0047] The control system is communicatively connected to the first water replenishment solenoid valve 6 and the second water replenishment solenoid valve 10. During the movement of the scraper 2, it can control the opening and closing of the first water replenishment solenoid valve 6 based on the measurement value of the first level gauge 4, and the opening and closing of the second water replenishment solenoid valve 10 based on the measurement value of the second level gauge 7, so as to maintain a consistent liquid level in the front and rear chambers of the water tank during the movement of the scraper 2. In other words, this solution, through the coordinated use of level gauges, water replenishment solenoid valves, and the control system, ensures that the liquid level on both sides of the water tank remains consistent during the movement of the scraper 2. This liquid level control method is characterized by its simple structure and convenient control.

[0048] Specifically, such as Figure 2 As shown, the first water replenishment mechanism also includes a first float valve 5;

[0049] The first float valve 5 is located at the liquid level in the front chamber of the water tank. The first float valve 5 is communicatively connected to the first water replenishment solenoid valve 6 and can control the opening and closing of the first water replenishment solenoid valve 6 according to the liquid level in the front chamber. Specifically, the first float valve 5 controls the first water replenishment solenoid valve 6 to open when the liquid level in the front chamber is low, and controls the first water replenishment solenoid valve 6 to close when the liquid level in the front chamber is equal to the liquid level in the rear chamber. That is, the first float valve 5 controls the first water replenishment solenoid valve 6 to close when the liquid level in the front chamber is high.

[0050] The second water supply mechanism also includes a second float valve 11;

[0051] The second float valve 11 is located at the liquid level in the rear chamber of the water tank. The second float valve 11 is communicatively connected to the second water replenishment solenoid valve 10 and can control the opening and closing of the second water replenishment solenoid valve 10 according to the liquid level in the rear chamber. Specifically, the second float valve 11 controls the second water replenishment solenoid valve 10 to open when the liquid level in the rear chamber is low, and controls the second water replenishment solenoid valve 10 to close when the liquid level in the rear chamber is equal to that in the front chamber. In other words, the second float valve 11 controls the second water replenishment solenoid valve 10 to close when the liquid level in the rear chamber is high. In other words, this solution, through the combined use of the float valve and the water replenishment solenoid valve, provides another control method to maintain consistent liquid levels in the front and rear chambers of the water tank during the movement of the scraper 2. Furthermore, the outlet of the first water replenishment pipe 8 is located near the first float valve 5, and the outlet of the second water replenishment pipe 9 is located near the first float valve 11, which facilitates a certain degree of flushing of the float valve's float during water replenishment, reducing the impact of silt and ash on the float. In other words, this solution can control the liquid level on both sides of the water tank through one of the two control methods mentioned above. When there is a need to adjust the liquid level on both sides of the water tank, the control method of using a float valve and a water replenishment solenoid valve is preferred.

[0052] Furthermore, to better achieve liquid level measurement in the front or rear chamber of the water tank; preferably, such as Figure 2 As shown, the first level gauge 4 and / or the second level gauge 7 are electrode-type level gauges. Electrode-type level gauges are better suited for measuring liquid levels in wastewater. Furthermore, they also have an alarm function; when the liquid level drops, the electrode-type level gauge issues an alarm and, through the control system or a float valve, controls the water supply solenoid valve to replenish water.

[0053] Furthermore, when scraper 2 moves forward, the water flow will flow backward; to reduce the backward flow of water and prevent sediment from flowing back and accumulating in the rear chamber of the water tank; accordingly, such as Figure 1 As shown, the slag discharge machine for preventing sludge backflow provided in this embodiment of the invention further includes:

[0054] A baffle plate 3 is installed on the bottom wall inside the water tank, located behind the scraper 2. In other words, this design uses the baffle plate 3 to reduce the backward flow of water as the scraper 2 moves forward, and also helps to prevent sediment from flowing backward and entering the rear chamber of the water tank. For example, Figure 3 As shown, the baffle 3 is distributed in the rear chamber of the water tank.

[0055] In this plan, such as Figure 3As shown, the baffles 3 are arranged in a stepped pattern on the sloping bottom wall of the water tank, with the front lower than the rear. This arrangement continuously lifts the water as it flows backward, reducing its kinetic energy, and effectively traps sediment on the baffles 3, thus preventing both water and sediment from flowing backward. In other words, the stepped arrangement of the baffles 3 effectively reduces water backflow and prevents sediment from entering the rear chamber of the water tank. Of course, when water is added to the rear chamber, the sediment will flow back to the front chamber of the water tank with the water flow and be pushed into the sludge pit.

[0056] To further optimize the above technical solution, the baffle plate 3 is sealed and welded to the sloping bottom wall of the water tank, which is lower at the front and higher at the rear. That is, the baffle plate 3, arranged in a stepped manner, is sealed and welded to the sloping bottom wall of the water tank, ensuring the tightness of the installation of the stepped baffle plate 3 and preventing water leakage between the baffle plate 3 and the sloping bottom wall of the water tank. Of course, if... Figure 3 As shown, the baffles 3 arranged in a stepped manner also need to be sealed and welded between each pair of adjacent plates.

[0057] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A slag discharger for preventing sludge backflow, comprising a slag discharger body, characterized in that, Also includes: First level gauge (4), second level gauge (7), first water replenishment mechanism, second water replenishment mechanism and control system; The first level gauge (4) is used to measure the level of the liquid in the front chamber of the main water tank of the slag discharge machine; The second level gauge (7) is used to measure the level of the liquid in the rear chamber of the water tank; The first water replenishment mechanism is used to replenish water to the front chamber of the water tank; The second water replenishment mechanism is used to replenish water to the rear chamber of the water tank; The control system is connected to the first level gauge (4), the second level gauge (7), the first water replenishment mechanism and the second water replenishment mechanism respectively. During the movement of the scraper (2) of the slag discharge machine body, it can control the opening and closing of the first water replenishment mechanism according to the measurement value of the first level gauge (4) and the opening and closing of the second water replenishment mechanism according to the measurement value of the second level gauge (7) so that the liquid level of the front chamber and the rear chamber of the water tank remains consistent during the movement of the scraper (2). The slag discharge machine for preventing sludge backflow also includes: A baffle (3) is installed on the bottom wall of the water tank and located behind the scraper (2). The baffle (3) is arranged in a stepped manner on the inclined bottom wall of the water tank, which is lower in the front and higher in the back.

2. The slag discharge machine for preventing sludge backflow according to claim 1, characterized in that, The first water replenishment mechanism includes: a first water replenishment pipe (8) and a first water replenishment solenoid valve (6); One end of the first water supply pipe (8) is used to connect to the water supply tank, and the other end is located in the front chamber of the water tank. The first water supply solenoid valve (6) is located in the middle part of the first water supply pipe (8). The second water replenishment mechanism includes: a second water replenishment pipe (9) and a second water replenishment solenoid valve (10); One end of the second water supply pipe (9) is used to connect to the water supply tank, and the other end is located in the rear chamber of the water tank. The second water supply solenoid valve (10) is located in the middle part of the second water supply pipe (9). The control system is communicatively connected to the first water replenishment solenoid valve (6) and the second water replenishment solenoid valve (10) respectively. During the movement of the scraper (2), it can control the opening and closing of the first water replenishment solenoid valve (6) according to the measurement value of the first liquid level gauge (4), and can control the opening and closing of the second water replenishment solenoid valve (10) according to the measurement value of the second liquid level gauge (7), so as to keep the liquid level of the front chamber and the rear chamber of the water tank consistent during the movement of the scraper (2).

3. The slag discharge machine for preventing sludge backflow according to claim 2, characterized in that, The first water replenishment mechanism also includes a first float valve (5); The first float valve (5) is located on the liquid surface of the front chamber of the water tank. The first float valve (5) is connected to the first water replenishment solenoid valve (6) and can control the opening and closing of the first water replenishment solenoid valve (6) according to the liquid level in the front chamber. The second water replenishment mechanism also includes a second float valve (11); The second float valve (11) is located at the liquid level in the rear chamber of the water tank. The second float valve (11) is connected in communication with the second water replenishment solenoid valve (10) and can control the opening and closing of the second water replenishment solenoid valve (10) according to the liquid level in the rear chamber.

4. The slag discharge machine for preventing sludge backflow according to claim 1, characterized in that, The first level gauge (4) and / or the second level gauge (7) are electrode level gauges.

5. The slag discharge machine for preventing sludge backflow according to claim 1, characterized in that, The baffle plate (3) is sealed and welded to the inclined bottom wall of the water tank, which is lower at the front and higher at the back.

Images