Coal feeder flashboard

Abstract

The utility model discloses a flashboard of a coal feeder, which is characterized in that scraper devices are symmetrically arranged in a chute at one end of the flashboard corresponding to a discharge chute, and the length of an extension rod of a first hydraulic rod of each scraper device is greater than that of a second hydraulic rod, so that scrapers are obliquely arranged, and when the flashboard is closed, the scrapers clean coal in the chute; through the inclined scraping plate, one part of coal is guided into the discharging groove, the other part of the coal is discharged through the cleaning groove formed in the sliding groove, the coal is guided into the discharging groove through the coal guiding plate, and in the process, when the gate plate is closed, the scraping plate device is completely contained in the scraping plate containing shell, so that gaps are prevented from occurring when the gate plate is closed; and meanwhile, the back flushing device performs back flushing at regular intervals to clean coal dust in the sliding groove, abrasion of particles to the flashboard is reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of coal feeder equipment, specifically a coal feeder gate. Background Technology

[0002] The coal feeder gate is used to regulate the coal flow rate, ensuring that the coal feeder can effectively transport coal when needed. In the closed state, the gate can effectively prevent coal backflow and ensure the normal operation of the system. In case of maintenance or failure, the gate can quickly cut off the material conveying, protecting the equipment and personnel safety. However, during the process of the coal feeder gate opening and closing to convey materials, coal often falls into the gate's chute. When too much material accumulates, the gate cannot close tightly. When the coal accumulated in the chute reaches a certain level, the gate's closure is hindered, and it cannot fully fit with the sealing surface. This will cause coal to leak even when closed, resulting in material loss and affecting the efficiency of subsequent processes. At the same time, due to coal accumulation, the gate suffers additional wear when opening and closing, leading to premature failure of the seals and thus shortening the service life of the equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a gate for a coal feeder to solve the problem that coal often falls into the groove of the gate, and the gate cannot close tightly when too much material accumulates.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a coal feeder gate, comprising a housing, a gate, a scraper device, and a back-blowing device. The housing has a discharge chute for discharging material, and a sliding groove is formed inside the housing. The gate is connected within the sliding groove and slidably fitted into the sliding groove. Scraper devices are symmetrically connected to the left and right sides of one end of the gate corresponding to the discharge chute. Back-blowing devices are symmetrically connected to the left and right sides of one end of the top of the housing at the discharge chute. Connecting grooves are symmetrically formed on the left and right sides of one end of the housing at the discharge chute, located at the end of the sliding groove. A scraper receiving shell is connected to the connecting groove. A cleaning groove is formed on the sliding groove, and a coal guide plate is connected to the bottom end of the cleaning groove.

[0005] The scraper device includes a first hydraulic rod, a second hydraulic rod, and a scraper. Two connecting holes are respectively opened on the left and right sides of the gate at one end of the chute. The first and second hydraulic rods are located within the connecting holes, and their rod chambers are hinged to the scraper. The piston rod of the first hydraulic rod extends beyond its piston rod by a greater length than that of the second hydraulic rod. The scraper abuts against the inner wall of the chute and is angled.

[0006] The back-blowing device includes a bracket and back-blowing heads. The bracket is connected to the top of the outer shell, and several back-blowing heads are evenly distributed on the bracket. The back-blowing heads penetrate the outer shell, and the back-blowing ports are located at the top of the slide groove, with the back-blowing ports facing the inner wall of the slide groove. An external air source pipe is connected to the back-blowing head.

[0007] Preferably, the coal guide plate is set at an angle, with its top end not exceeding the discharge chute to avoid collision with the coal, while guiding the coal cleaned from the chute.

[0008] Preferably, a hydraulic cylinder is connected to the end of the gate away from the discharge chute, the hydraulic cylinder is connected to the outer casing, and the piston rod of the hydraulic cylinder is connected to the gate.

[0009] Preferably, the external air supply pipe is connected to a solenoid valve for controlling the switching of the backflush head.

[0010] Preferably, the first hydraulic rod and the second hydraulic rod are respectively connected to the oil circuit, and the oil circuit is equipped with a control valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By symmetrically arranging scraper devices in the chute at one end of the gate corresponding to the discharge chute, the length of the first hydraulic rod extension of the scraper device is greater than the length of the second hydraulic rod, thus making the scraper inclined. When the gate is closed, the scraper cleans the coal in the chute. After passing through the inclined scraper, some of the coal is guided into the discharge chute, while the other part is discharged through the cleaning chute opened on the chute. The coal guide plate guides the coal into the discharge chute. During this process, when the gate is closed, the scraper device will be completely contained in the scraper housing, thereby preventing gaps when the gate is closed and ensuring a sealing effect. At the same time, the back-flushing device regularly back-flushes to clean the coal dust in the chute, reducing particle wear on the gate and extending the service life of the equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the cleaning trough and coal guide plate of this utility model.

[0015] Figure 3 This is a schematic diagram of the scraper device of this utility model.

[0016] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A.

[0017] Figure 5 This is a schematic diagram of the backflush device of this utility model.

[0018] In the diagram: 1. Outer shell; 2. Gate plate; 3. Hydraulic cylinder; 4. Scraper device; 401. First hydraulic rod; 402. Second hydraulic rod; 403. Scraper; 5. Cleaning trough; 6. Coal guide plate; 7. Scraper receiving shell; 8. Backflush device; 801. Support; 802. Backflush head; 9. Solenoid valve; 10. Control valve. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] 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.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figure 1-4This utility model provides an embodiment of a coal feeder gate, comprising a housing 1, a gate 2, a scraper device 4, and a backflushing device 8. The housing 1 has a discharge chute for material discharge, and a sliding groove is formed inside the housing 1. The gate 2 is connected within the sliding groove. The gate 2 controls the flow of material, and the discharge rate is managed by adjusting the opening size through sliding. In the closed state, the gate 2 effectively prevents coal backflow, ensuring the normal operation of the system. The gate 2 slides within the sliding groove. Scraper devices 4 are symmetrically connected to the left and right sides of one end of the gate 2 corresponding to the discharge chute. Backflushing devices 8 are symmetrically connected to the left and right sides of the top of the housing 1 at one end of the discharge chute. The device 8 has symmetrical connecting grooves on both sides of the outer casing 1 at one end of the discharge chute, located at the chute stop end. A scraper receiving shell 7 is connected to the connecting groove, which houses the scraper 403 of the scraper device 4. After the gate 2 is closed, the scraper 403 slides into the scraper receiving shell 7, allowing the gate 2 to close tightly. A cleaning groove 5 is provided on the chute, through which the coal cleaned by the scraper 403 falls. The coal then falls below via a coal guide plate 6. The bottom end of the cleaning groove 5 is connected to the coal guide plate 6, which guides the cleaned coal.

[0024] The scraper device 4 includes a first hydraulic rod 401, a second hydraulic rod 402, and a scraper 403. Two connecting holes are respectively opened on the left and right sides of the gate plate 2 at one end of the chute to accommodate the first hydraulic rod 401 and the second hydraulic rod 402. This design shortens the length between the scraper 403 and the gate plate 2. The first hydraulic rod 401 and the second hydraulic rod 402 are located in the connecting holes, and their rod chambers are hinged to the scraper 403. The first hydraulic rod 401 and the second hydraulic rod 402 provide power to push the scraper 403 for cleaning. Simultaneously, the extension length of the piston rod of the hydraulic rod can be adjusted according to different conditions to adjust the angle of the scraper 403. The working angle of the scraper 403 can be flexibly adjusted according to different coal types and the accumulation conditions in the chute. The first hydraulic rod 401... The piston rod of the first hydraulic rod 401 extends beyond the piston rod of the second hydraulic rod 402. The scraper 403 abuts against the inner wall of the chute and is angled. The scraper 403 cleans the material in the chute, effectively reducing material accumulation and preventing the gate 2 from closing tightly. The coal guide plate 6 is angled, with its top end not exceeding the discharge chute to avoid collision with the coal and prevent damage to the coal guide plate 6 when it falls. At the same time, it guides the coal cleaned in the chute. A hydraulic cylinder 3 is connected to the end of the gate 2 away from the discharge chute. The hydraulic cylinder 3 is connected to the outer casing 1, and the piston rod of the hydraulic cylinder 3 is connected to the gate 2. The hydraulic cylinder 3 controls the movement of the gate 2 to achieve precise adjustment of the discharge. The hydraulic drive system can respond quickly and provide efficient operation.

[0025] The first hydraulic rod 401 and the second hydraulic rod 402 are respectively connected to the oil circuit. The oil circuit is equipped with a control valve 10 to control the extension length of the piston rods of the first hydraulic rod 401 and the second hydraulic rod 402, so as to adjust the angle of the scraper 403. When the piston rod of the hydraulic cylinder 3 drives the gate 2 to slide, the scraper 403 cleans the coal in the chute. A part of the coal falls into the discharge chute through the inclined scraper 403, and the other part is discharged through the cleaning chute 5. After being guided by the coal guide plate 6, it falls to the bottom. Then the gate 2 closes tightly, and the scraper 403 is housed in the scraper housing 7.

[0026] Example 2: Please refer to Figure 5 Based on Example 1, it also has the following structure:

[0027] The back-blowing device 8 includes a bracket 801 and a back-blowing head 802. The bracket 801 is connected to the top of the housing 1. Several back-blowing heads 802 are evenly distributed on the bracket 801. The bracket 801 supports the back-blowing heads 802 and ensures their stability and correct position. The back-blowing head 802 penetrates the housing 1, and the back-blowing port is located at the top of the slide. The back-blowing head 802 sprays air from an external air source through its back-blowing port to generate a reverse airflow, which is used to clean or remove dirt or impurities in the slide. Its back-blowing port faces the inner wall of the slide. An external air source pipe is connected to the back-blowing head 802. The external air source pipe is connected to an external air source to deliver airflow to the back-blowing head 802. A solenoid valve 9 is connected to the external air source pipe to control the opening and closing of the back-blowing head 802.

[0028] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A coal feeder gate, characterized in that: The device includes a shell (1), a gate (2), a scraper device (4), and a back-blowing device (8). The shell (1) has a discharge trough for discharging material. The shell (1) has a sliding groove inside, and the gate (2) is connected inside the sliding groove. The gate (2) is slidably fitted into the sliding groove. The scraper device (4) is symmetrically connected to the left and right sides of one end of the gate (2) corresponding to the discharge trough. The back-blowing device (8) is symmetrically connected to the left and right sides of one end of the discharge trough at the top of the shell (1). The shell (1) has symmetrically connected connecting grooves on the left and right sides of one end of the discharge trough, located at the end of the sliding groove. A scraper receiving shell (7) is connected to the connecting groove. A cleaning groove (5) is opened on the sliding groove. A coal guide plate (6) is connected to the bottom end of the cleaning groove (5). The scraper device (4) includes a first hydraulic rod (401), a second hydraulic rod (402), and a scraper (403). Two connecting holes are respectively opened on the left and right sides of the gate plate (2) at one end of the chute. The first hydraulic rod (401) and the second hydraulic rod (402) are located in the connecting holes, and the top ends of their rod chambers are hinged to the scraper (403). The piston rod of the first hydraulic rod (401) extends beyond the piston rod of the second hydraulic rod (402). The scraper (403) abuts against the inner wall of the chute and is obliquely positioned. The back-blowing device (8) includes a bracket (801) and a back-blowing head (802). The bracket (801) is connected to the top of the outer shell (1). Several back-blowing heads (802) are evenly distributed on the bracket (801). The back-blowing head (802) penetrates the outer shell (1). The back-blowing port is located at the top of the slide groove, and its back-blowing port faces the inner wall of the slide groove. An external air source pipe is connected to the back-blowing head (802).

2. A coal feeder gate according to claim 1, characterized in that: The coal guide plate (6) is set at an angle, and its top end does not exceed the discharge chute to avoid collision with the coal, while guiding the coal cleaned in the chute.

3. A coal feeder gate according to claim 1, characterized in that: The gate (2) is connected to a hydraulic cylinder (3) at the end away from the discharge chute. The hydraulic cylinder (3) is connected to the outer shell (1), and the piston rod of the hydraulic cylinder (3) is connected to the gate (2).

4. A coal feeder gate according to claim 1, characterized in that: The external air supply pipe is connected to a solenoid valve (9) for controlling the on / off of the backflush head (802).

5. A coal feeder gate according to claim 1, characterized in that: The first hydraulic rod (401) and the second hydraulic rod (402) are respectively connected to the oil circuit, and a control valve (10) is provided on the oil circuit.

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