Pretreatment filtering device for coal ash backfilling

Abstract

The pretreatment filtering device comprises a device body and a feeding frame, the top of the device body is fixedly connected with the feeding frame, a bearing plate is installed in the device body, a special-shaped frame is arranged at the top of the bearing plate, and a first filtering net and a second filtering net are installed in the special-shaped frame. According to the pretreatment filtering device for fly ash backfilling, a first filtering net and a second filtering net are installed on the surface of a special-shaped frame, fine fly ash can fall into the first filtering net and fall into a discharging opening under the action of stirring blades, then when rough fly ash is brought into a recycling hole by the stirring blades, and then when a recycling groove is full, the recycling groove is filled with the fly ash; when the device is used, a user only needs to hold the grip to pull out the baffle on the inner side and then pull the pull rod, so that the scraper blade cleans out large-particle foreign matters or coal briquettes which are not crushed completely, and the device is simple to operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal ash filtering, in particular to a pre-treatment filtering device for fly ash backfilling. Background Art

[0002] The pre-treatment filtration device for fly ash backfill is a fly ash filter. The function of the fly ash filter is to filter out coarse and large particles and other woven fibers, wood chips and other debris in the coal powder, so that the coal powder can be pneumatically conveyed unimpeded and ensure that the coal powder distributor, coal powder spray gun and valves on the branch pipe are not blocked. Therefore, a filtering device is needed to filter the fly ash.

[0003] The fly ash filtration devices currently available on the market have the following problems when used:

[0004] 1. When backfilling and filtering traditional fly ash, a simple filtering device is usually used to filter foreign matter. It is not convenient to clean out the large foreign matter or the coal blocks that are not completely crushed, and the operation is not convenient enough;

[0005] 2. During the use of most fly ash filtering devices, since fly ash is usually a very small ash body in diameter, it is easy to adhere to the filtering structure, which requires staff to clean the filtering structure regularly. When cleaning, the filtering device needs to be disassembled, which is relatively troublesome. Utility Model Content

[0006] The utility model aims to provide a pre-treatment filtering device for fly ash backfilling to solve the technical problems raised in the background technology.

[0007] To achieve the above-mentioned purpose, the specific technical scheme of the utility model is as follows: a pretreatment filtration device for fly ash backfill, comprising a device body and a feed frame, the top of the device body is fixedly connected to the feed frame, a bearing plate is installed inside the device body, a special-shaped frame is provided on the top of the bearing plate, a first filter screen and a second filter screen are installed inside the special-shaped frame, a pull-out rod is provided inside the device body, the pull-out rod is symmetrically distributed, and the bottom of the pull-out rod is fixedly connected to a scraper.

[0008] Preferably, a square hole is opened on the outside of the device body, a square plate is embedded in the inside of the square hole, the outside of the device body is fixedly connected to the internal threaded seat, the outside of the square plate is fixedly connected to the mounting angle plate, the inside of the internal threaded seat is provided with a threaded hole, the inside of the mounting angle plate is embedded with a fastening bolt, and the fastening bolt is threadedly connected to the threaded hole.

[0009] Preferably, the bottom of the device body is fixedly connected to the discharge frame, a mounting plate is provided on the side of the device body, and a driving motor is provided outside the mounting plate.

[0010] Preferably, the driving motor is fixedly connected to a shaft rod, and stirring blades are arranged on the outside of the shaft rod, and the stirring blades are distributed in a ring shape.

[0011] Preferably, a recovery hole is opened inside the square plate, a sealing plate is embedded inside the recovery hole, a baffle is installed on the back of the sealing plate, and a handle is provided on the outside of the baffle.

[0012] Preferably, the outside of the device body is fixedly connected to support rods, the number of the support rods is provided in four groups, and the bottoms of the support rods are fixedly connected to the bottom plate.

[0013] The utility model provides a pre-treatment filtering device for fly ash backfilling, which has the following advantages:

[0014] 1. A pre-treatment filter device for fly ash backfilling, by installing a first filter screen and a second filter screen on the surface of a special-shaped frame, and installing a pull-out rod inside the device body, and the bottom of the pull-out rod is connected to a scraper. Since two sets of filtering structures and material-taking structures are installed, when the driving motor outside the device body drives the stirring blade to stir, the finer fly ash will fall into the first filter screen, and fall into the discharge port under the action of the stirring blade. Secondly, when the coarser fly ash is brought into the recovery tank by the stirring blade, and then when the recovery tank is full, it is only necessary to hold the handle to pull out the inner baffle, and then pull the pull-out rod to make the scraper clean out large particles of foreign matter or coal blocks that are not completely crushed, and it is relatively simple to operate;

[0015] 2. This kind of pretreatment filtering device for fly ash backfilling is achieved by installing a square plate inside the square hole, and installing an angle plate outside the internal threaded seat, and installing fastening bolts inside. Due to the quick-release structure of the installation, it is convenient to clean the filtering structure inside the device body, and there is no need to completely dismantle the device body. When the fly ash filtering device is used up, it is only necessary to reversely twist the fastening bolts inside the installation angle plate, and then take the square plate out of the square groove, and then the special-shaped frame on the top of the supporting plate can be taken out, so that the filtering structure can be cleaned, and it is more convenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[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 structure of the first filter screen of the utility model;

[0019] Figure 3 This is a schematic diagram of the pull-out rod structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the recovery hole structure of the utility model.

[0021] Explanation of the markings in the figure: 1. Device body; 2. Support rod; 3. Bottom plate; 4. Feed frame; 5. Drive motor; 6. Mounting plate; 7. Shaft rod; 8. Agitator; 9. Special-shaped frame; 10. First filter screen; 11. Second filter screen; 12. Carrying plate; 13. Square hole; 14. Square plate; 15. Pull-out rod; 16. Scraper; 17. Internal threaded seat; 18. Threaded hole; 19. Mounting angle plate; 20. Fastening bolt; 21. Recovery hole; 22. Sealing plate; 23. Baffle; 24. Handle; 25. Discharge frame. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", 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 the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] In the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the embodiments of the present utility model. In order to simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0027] In order to better understand the purpose, structure and function of the utility model, the following is a further detailed description of a pre-treatment filtering device for fly ash backfilling of the utility model in conjunction with the accompanying drawings.

[0028] like Figure 1-4 As shown, a pretreatment filtering device for fly ash backfilling of the utility model comprises a device body 1 and a feed frame 4, the top of the device body 1 is fixedly connected to the feed frame 4, a bearing plate 12 is installed inside the device body 1, a special-shaped frame 9 is provided on the top of the bearing plate 12, a first filter screen 10 and a second filter screen 11 are installed inside the special-shaped frame 9, and due to the installation of the special-shaped frame 9, the first filter screen 10 and the second filter screen 11, fly ash of different coarseness and fineness can be divided, a pull rod 15 is provided inside the device body 1, the pull rod 15 is symmetrically distributed, and the bottom of the pull rod 15 is fixedly connected to a scraper 16, and due to the installation of the pull rod 15 and the scraper 16, the pull rod 15 is held so that the scraper 16 can clean out large particles of foreign matter or coal blocks that are not completely crushed.

[0029] A square hole 13 is provided on the outside of the device body 1, and a square plate 14 is embedded in the inside of the square hole 13. The outside of the device body 1 is fixedly connected to an internal threaded seat 17, and the outside of the square plate 14 is fixedly connected to a mounting angle plate 19. A threaded hole 18 is provided inside the internal threaded seat 17, and a fastening bolt 20 is embedded in the inside of the mounting angle plate 19. The fastening bolt 20 is threadedly connected to the threaded hole 18. By installing the fastening bolt 20, the internal threaded seat 17, the mounting angle plate 19, and the square plate 14, the square hole 13 can be quickly opened and closed.

[0030] The bottom of the device body 1 is fixedly connected to the discharge frame 25 , a mounting plate 6 is provided on the side of the device body 1 , and a driving motor 5 is provided outside the mounting plate 6 . The mounting plate 6 facilitates the installation of the driving motor 5 outside the device body 1 .

[0031] The driving motor 5 is fixedly connected to the shaft 7. The shaft 7 is provided with stirring blades 8 on its exterior. The stirring blades 8 are distributed in a ring shape. As the stirring blades 8 are installed, the stirring blades 8 stir the fly ash under the drive of the shaft 7 to avoid blockage.

[0032] A recovery hole 21 is provided inside the square plate 14, a sealing plate 22 is embedded inside the recovery hole 21, a baffle 23 is installed on the back of the sealing plate 22, and a handle 24 is provided outside the baffle 23. Due to the installation of the sealing plate 22, the recovery hole 21 can be sealed.

[0033] The outside of the device body 1 is fixedly connected to the support rods 2, and the number of the support rods 2 is provided in four groups. The bottom of the support rods 2 is fixedly connected to the base plate 3. Due to the installation of the support rods 2, the device body 1 and the base plate 3 can play a role of connecting support.

[0034] The working principle of the pretreatment filtering device for fly ash backfilling: when using the fly ash filtering device, first move it to an appropriate position, install the filtering structure inside the device body 1, then close the square hole 13, place the storage box at the bottom of the discharge frame 25, and then the staff will pour the fly ash to be filtered into the feed frame 4 on the top of the device body 1. Since the drive motor 5 and the stirring blade 8 are installed, the feed port can be loosened to avoid blockage. When the finer fly ash falls into the first filter screen 10, it falls into the discharge port under the action of the stirring blade 8. Secondly, when the coarser fly ash is brought into the recovery hole 21 by the stirring blade 8, when the recovery tank is full, first hold the handle 24, and then open the recovery hole The baffle 23 inside 21 is pulled out, and then the pull-out rod 15 is pulled to make the scraper 16 clean out large particles of foreign matter or coal blocks that are not completely crushed, which is convenient for recycling and is relatively simple for the staff to operate. Then, when the staff needs to clean the fly ash filter device, the staff needs to first reversely twist the fastening bolts 20 inside the installation angle plate 19, and then take out the square plate 14 from the square groove, and then the special-shaped frame 9 on the top of the supporting plate 12 can be taken out, so that the filtering structure can be cleaned, and it is more convenient to clean. After cleaning, it is installed again on the supporting plate 12 inside the device body 1, and then the square plate 14 is installed, so as to facilitate the staff to continue to use it next time.

[0035] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A pre-treatment filtration device for fly ash backfill, comprising a device body (1) and a feed frame (4), wherein the top of the device body (1) is fixedly connected to the feed frame (4), and characterized in that: A carrying plate (12) is installed inside the device body (1), a special-shaped frame (9) is provided on the top of the carrying plate (12), a first filter screen (10) and a second filter screen (11) are installed inside the special-shaped frame (9), a pull-out rod (15) is provided inside the device body (1), the pull-out rod (15) is symmetrically distributed, and the bottom of the pull-out rod (15) is fixedly connected to a scraper (16).

2. The pre-treatment filtering device for fly ash backfilling according to claim 1, characterized in that: A square hole (13) is provided on the outside of the device body (1), a square plate (14) is embedded inside the square hole (13), the outside of the device body (1) is fixedly connected to an internal threaded seat (17), the outside of the square plate (14) is fixedly connected to a mounting angle plate (19), a threaded hole (18) is provided inside the internal threaded seat (17), a fastening bolt (20) is embedded inside the mounting angle plate (19), and the fastening bolt (20) is threadedly connected to the threaded hole (18).

3. The pre-treatment filtering device for fly ash backfilling according to claim 1, characterized in that: The bottom of the device body (1) is fixedly connected to a discharge frame (25), a mounting plate (6) is provided on the side of the device body (1), and a driving motor (5) is provided outside the mounting plate (6).

4. The pre-treatment filtering device for fly ash backfilling according to claim 3, characterized in that: The driving motor (5) is fixedly connected to a shaft (7), and stirring blades (8) are arranged outside the shaft (7), and the stirring blades (8) are distributed in a ring shape.

5. The pre-treatment filtering device for fly ash backfilling according to claim 2, characterized in that: A recovery hole (21) is provided inside the square plate (14), a sealing plate (22) is embedded inside the recovery hole (21), a baffle (23) is installed on the back of the sealing plate (22), and a handle (24) is provided outside the baffle (23).

6. The pre-treatment filtering device for fly ash backfilling according to claim 1, characterized in that: The outside of the device body (1) is fixedly connected to a support rod (2), the number of the support rods (2) is four, and the bottom of the support rod (2) is fixedly connected to a bottom plate (3).

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