Shallow cavity side feeding filter plate

Abstract

The utility model discloses a shallow cavity side feeding filter plate which comprises a bottom plate, a frame piece is arranged on the periphery of the bottom plate, and the frame piece is matched with a shallow cavity water mold. A plurality of sets of boss pieces are arranged on the side face of the bottom plate, two sets of permeable pieces are arranged on the lower portion of the bottom plate, and a feeding plate is arranged between the left side of the bottom plate and the frame piece. According to the utility model, through the arrangement of the shallow cavity edge feeding filter plate, on the basis of an old-fashioned material mold filter plate, the thicknesses of the frame and the corners are reduced, so that the volumes of the cavities on the two sides of the material mold filter plate are relatively reduced, the speed of filling the whole cavity with coal slime is accelerated, and the squeezing process is more fully carried out.

Description

Technical Field

[0001] The utility model relates to a shallow cavity side feeding filter plate. Background Art

[0002] Coal slime is a mixture containing large amounts of water and solid particulate matter. Its main components are coal, water, and ash. Coal is the primary component of coal slime, accounting for approximately 50% to 70%. The moisture content is generally between 20% and 40%, resulting in a high ash content and low calorific value. Coal slime can be divided into three categories based on ash content and calorific value: low-ash coal slime has an ash content of 20% to 32% and a calorific value of 12.5 to 20 MJ / kg; medium-ash coal slime has an ash content of 30% to 55% and a calorific value of 8.4 to 12.5 MJ / kg; and high-ash coal slime has an ash content greater than 55% and a calorific value of 3.5 to 6.3 MJ / kg. Coal slime dewatered by a disc vacuum filter generally has a water content of over 30%; coal slime dewatered by a pleated belt filter has a water content of 26% to 29%; and coal slime dewatered by a filter press has a water content of 20% to 24%. Coal slime also contains small amounts of sulfur, nitrogen, and oxygen.

[0003] Due to its numerous disadvantages, such as high moisture content, high viscosity, high water retention, and low calorific value, coal slime has been difficult to apply industrially. It has long been rejected by power users, with its primary outlet being residential sales. Since the reform and opening up, the national economy has experienced rapid growth, with coal production now ranking first in the world. The market has also undergone significant changes. The depth and breadth of coal processing have rapidly expanded, leading to a significant increase in coal slime production. The comprehensive utilization of coal slime has become a pressing issue.

[0004] The emergence of ultra-high pressure filter presses has solved the problem of excessive moisture content in most types of coal slimes. However, with the continuous mechanization of mining technology and the depletion of high-quality coal, a large amount of high-ash fine-grained coal slimes have appeared. These coal particles are mixed with a large amount of fine-grained gangue minerals, and there are also many high-ash coal slimes or coal slimes with high volatile matter content. During the pressing process, they cannot fill the various chambers of the material mold filter plate within the predetermined time, and the feeding is slow, resulting in low pressing efficiency, unsatisfactory moisture content of the pressed coal, deformation and damage of the filter plate or filter cloth and related accessories, and other serious problems.

[0005] Therefore, a shallow cavity side feed filter plate is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a shallow cavity side feed filter plate to solve the problem of slow feeding of a few special texture coal slimes in the pressing process of the existing material mold filter plate mentioned in the background art.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a shallow cavity side feed filter plate, comprising a bottom plate, a frame member is provided on the periphery of the bottom plate, and the frame member cooperates with the shallow cavity water mold;

[0008] A plurality of bosses are provided on the side of the bottom plate, two groups of water-permeable parts are provided on the lower part of the bottom plate, and a feed plate is provided between the left side of the bottom plate and the frame part.

[0009] Preferably, the frame member includes an upper frame rod, a lower frame rod, a left frame rod and a right frame rod located around the bottom plate, and the upper frame rod, the lower frame rod, the left frame rod and the right frame rod are connected by corner rods, and the corner rods are located at the corners around the bottom plate, and a water outlet for water discharge is provided at the corner rod located at the lower right part of the bottom plate.

[0010] Preferably, the upper frame rod, the left frame rod, the right frame rod and the corner rod are all chamfered relative to the bottom plate.

[0011] Preferably, the water-permeable member includes two water-permeable plates, which are respectively arranged on both sides of the bottom plate, and are arranged at an angle to the bottom plate to form a water channel between the water-permeable plates, the bottom plate and the lower frame rod.

[0012] Preferably, a plurality of groups of permeable grooves are provided on a side of the permeable plate closer to the bottom plate, so that water injected into the shallow cavity water mold is introduced into the water channel through the permeable grooves and discharged through the water outlet.

[0013] Preferably, the boss member includes a shaft boss and a hollow boss, and the shaft boss and the hollow boss are respectively arranged on both sides of the base plate.

[0014] Preferably, the shaft-belted boss comprises a boss plate, and a shaft is provided in the middle of the boss plate;

[0015] A through hole matching the shaft is provided in the middle of the hollow boss, so that the hollow boss is connected to the outer periphery of the shaft through the through hole.

[0016] Preferably, the feed plate is provided with a feed port for feeding on the left side of the frame rod, and feed seats are provided on both sides of the feed plate, and a feed flap is connected to one side of the feed seat.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model sets a shallow cavity edge feeding material mold filter plate with a filter plate thickness of 52mm, while the filter plate thickness of the old material mold filter plate is 80mm, thereby reducing the thickness of the frame and corners, thereby making the cavity volume on both sides of the material mold filter plate relatively smaller, speeding up the rate at which the coal slime fills the entire cavity, and also making the pressing process more fully carried out.

[0019] The bosses have been optimized from solid bosses on both sides of the mold filter plate to a combination of a shafted boss on one side and a hollow boss on the other. This eliminates the need for positioning tooling to determine the boss's installation position during production, significantly improving work efficiency. The optimized bosses also significantly increase their pressure-bearing capacity during the pressing process, eliminating the frequent occurrence of boss drops. Furthermore, the shafted and hollow bosses inherently support each other, allowing for segmented welding during welding, eliminating the need for full-circumference welding around the bosses and reducing deformation caused by high temperatures during welding.

[0020] The water outlet holes of the old mold filter plate are located on the side frame and the lower frame. Each mold filter plate is equipped with six perforated cover plates to ensure that the water holes are not blocked by debris. The side frames of the shallow cavity feed mold filter plate eliminate the process of processing the water outlet holes. The lower frame is also changed to a steel plate. Two permeable plates are spot welded on both sides of the lower frame to form two water channels. Because the permeable plate is thin, in order to avoid deformation caused by welding, the entire permeable plate is divided into two, and the deformation caused by welding is reduced by shortening the length. The water storage volume of the water channel formed by this method is larger than that of the old mold filter plate, and the processing steps of the frame are relatively reduced, which improves the production efficiency of the product. In addition, the number of water outlets is large, which is not easy to cause blockage, so the original perforated cover plate is cancelled, which greatly reduces the cost.

[0021] The feed position has also been changed from top feeding to side feeding, with the feed port located in the center of the side, making it easier for on-site workers to disassemble and assemble the unit without the need for lifting or standing on tiptoe. This also shortens the distance the coal sludge travels from the feed port to the chamber through the feed branch pipe, significantly increasing the feed rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure explosion of an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the assembly structure of an embodiment of the utility model;

[0025] Figure 4 This is a schematic structural diagram of a water-permeable member according to an embodiment of the present utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the boss with shaft according to an embodiment of the utility model;

[0027] Figure 6 This is a schematic diagram of the hollow boss structure of an embodiment of the utility model;

[0028] Figure 7 This is a schematic structural diagram of an embodiment of the present utility model;

[0029] Figure 8 This is a schematic structural diagram of the feed plate according to an embodiment of the present utility model.

[0030] In the figure: 1. Bottom plate; 2. Frame member; 201. Upper frame rod; 202. Lower frame rod; 203. Left frame rod; 204. Right frame rod; 205. Corner rod; 206. Water outlet; 3. Boss member; 301. Boss with shaft; 3011. Shaft rod; 302. Hollow boss; 3021. Through hole; 4. Water-permeable member; 401. Water-permeable plate; 402. Water-permeable trough; 5. Feed plate; 501. Feed seat; 502. Feed flap. DETAILED DESCRIPTION

[0031] To address the problem of slow feeding of existing material mold filter plates during the pressing process for a small number of coal slimes with special textures, the present invention provides a shallow cavity side feed filter plate. The following, combined with the accompanying drawings, provides a clear and complete description of the technical solutions in the present invention. Obviously, the described embodiments are only a portion of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0032] See also Figure 1-8 The utility model provides a shallow cavity side feed filter plate, comprising a bottom plate 1, a frame member 2 is provided on the periphery of the bottom plate 1, and the frame member 2 cooperates with the shallow cavity water mold;

[0033] A plurality of boss members 3 are provided on the side of the bottom plate 1 , two groups of water-permeable members 4 are provided on the lower portion of the bottom plate 1 , and a feed plate 5 is provided between the left side of the bottom plate 1 and the frame member 2 .

[0034] The frame member 2 includes an upper frame rod 201, a lower frame rod 202, a left frame rod 203, and a right frame rod 204 located around the bottom plate 1. The upper frame rod 201, the lower frame rod 202, the left frame rod 203, and the right frame rod 204 are connected by corner rods 205, and the corner rods 205 are located at the corners of the bottom plate 1. A water outlet 206 for discharging water is provided on the corner rod 205 located at the lower right part of the bottom plate 1. The upper frame rod 201, the left frame rod 203, the right frame rod 204, and the corner rod 205 are all chamfered relative to the bottom plate 1.

[0035] The permeable member 4 includes two permeable panels 401, one on each side of the bottom plate 1. The panels 401 are arranged at an angle relative to the bottom plate 1, forming a waterway between the panels 401, the bottom plate 1, and the lower frame rod 202. The permeable panels 401 are provided with multiple sets of permeable grooves 402 on the side closest to the bottom plate 1, allowing water injected into the shallow cavity water model to be directed through the permeable grooves 402 into the waterway and discharged through the water outlet 206.

[0036] The angle between the permeable plate 401 located at the lower frame rod 202 and the bottom plate 1 and the lower frame rod 202 forms a natural waterway, eliminating the need to machine the waterway on the frame rods on both sides of the mold filter plate and the lower frame rod 202. Furthermore, due to the large number of permeable grooves 402 on the permeable plate 401, it is less likely to cause problems such as blockage. The boss member 3 includes a shaft boss 301 and a hollow boss 302, which are respectively arranged on both sides of the bottom plate 1. The shaft boss 301 includes a boss plate, and a shaft rod 3011 is provided in the middle of the boss plate. A through hole 3021 is provided in the middle of the hollow boss 302 to match the shaft rod 3011, so that the hollow boss 302 is connected to the outer periphery of the shaft rod 3011 through the through hole 3021.

[0037] The original solid boss is replaced by a method of connecting the axial boss 301 with the hollow boss 302. The two support each other through the shaft 3011, which greatly improves the pressure resistance. In terms of welding technology, it is only necessary to perform segment welding around the two, and there is no need to fully weld the entire boss as in the past, so as to reduce the deformation effect of the high welding temperature on the base plate 1.

[0038] The feed plate 5 is provided with a feed port for feeding on the side of the left frame rod 203 , and feed seats 501 are provided on both sides of the feed plate 5 , and a feed flip cover 502 is connected to one side of the feed seat 501 .

[0039] The working principle of the shallow cavity side feed filter plate provided by the utility model is as follows:

[0040] When closing the mold, the sealing surfaces of the water mold filter plate and the material mold filter plate must be tightly attached (there are filter cloth, polyester mesh and rubber between the two). The coal slime needs to be fed from the feed branch pipe of the material mold filter plate to the feed plate 5, through the feed seats 501 on both sides of the feed plate 5, and the feed flap 502 opens the feed port and is distributed to the chambers on both sides. Water is injected from the water hole at the lower corner of the water mold filter plate.

[0041] During the squeezing process, water and coal slime are respectively injected into both sides of the filter cloth, polyester mesh and rubber. A sufficient amount of coal slime is first injected, and then water is continuously injected through the water mold filter plate to form a secondary squeezing.

[0042] The water squeezed from the coal sludge enters the waterway through the permeable grooves 402 on the permeable plate 401 at the lower frame rod 202 of the mold filter plate, and is then discharged through the outlet 206. If the injection speed or quantity of coal sludge does not meet the expected requirements, it will affect the overall squeezing rate and the water content of the coal sludge after squeezing. The purpose of the shallow cavity is to allow the coal sludge to fill the entire cavity more quickly, so that the pressure during squeezing within the cavity reaches the optimal effect.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shallow cavity side feed filter plate, characterized by: It comprises a bottom plate (1), wherein a frame member (2) is provided on the outer periphery of the bottom plate (1), and the frame member (2) cooperates with the shallow cavity water mold; A plurality of groups of boss members (3) are provided on the side of the bottom plate (1), two groups of water-permeable members (4) are provided at the lower portion of the bottom plate (1), and a feed plate (5) is provided between the left side of the bottom plate (1) and the frame member (2).

2. The shallow cavity side feed filter plate according to claim 1, characterized in that: The frame member (2) comprises an upper frame rod (201), a lower frame rod (202), a left frame rod (203) and a right frame rod (204) located around the bottom plate (1); the upper frame rod (201), the lower frame rod (202), the left frame rod (203) and the right frame rod (204) are connected via corner rods (205), and the corner rods (205) are located at corners around the bottom plate (1); a water outlet (206) for discharging water is provided at the corner rod (205) located at the lower right part of the bottom plate (1).

3. The shallow cavity side feed filter plate according to claim 2, characterized in that: The upper frame rod (201), the left frame rod (203), the right frame rod (204) and the corner rod (205) are all provided with chamfers relative to the bottom plate (1).

4. The shallow cavity side feed filter plate according to claim 1, characterized in that: The water-permeable member (4) comprises two water-permeable plates (401), the two water-permeable plates (401) being respectively arranged on both sides of the bottom plate (1), and the water-permeable plates (401) and the bottom plate (1) being arranged at an angle so as to form a water channel between the water-permeable plates (401), the bottom plate (1) and the lower frame rod (202).

5. The shallow cavity side feed filter plate according to claim 4, characterized in that: The permeable plate (401) has a plurality of permeable grooves (402) on one side closer to the bottom plate (1) so that water injected from the shallow cavity water model is guided into the water channel through the permeable grooves (402) and discharged through the water outlet (206).

6. The shallow cavity side feed filter plate according to claim 5, characterized in that: The boss member (3) comprises a boss with an axis (301) and a hollow boss (302), and the boss with an axis (301) and the hollow boss (302) are respectively arranged on both sides of the bottom plate (1).

7. The shallow cavity side feed filter plate according to claim 6, characterized in that: The shaft-belted boss (301) comprises a boss plate, and a shaft (3011) is provided in the middle of the boss plate; A through hole (3021) that matches the shaft (3011) is provided in the middle of the hollow boss (302), so that the hollow boss (302) is connected to the outer periphery of the shaft (3011) through the through hole (3021).

8. The shallow cavity side feed filter plate according to claim 1, characterized in that: The feed plate (5) is provided with a feed port for feeding on the side of the left frame rod (203), and feed seats (501) are provided on both sides of the feed plate (5). A feed flap (502) is connected to one side of the feed seat (501).

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