Modular primary drum screen for coal chemical industry

Abstract

The utility model relates to the technical field of drum screens, and discloses a modular primary drum screen for coal chemical industry, which comprises a first drum plate and a second drum plate, reinforcing rib plates are fixedly connected between the first drum plate and the second drum plate, and inner support components are fixedly mounted between the adjacent reinforcing rib plates. The clamping blocks fall into the clamping grooves, the bolts are rotated again, the bolts are sleeved with the positioning holes of the arc-shaped supporting plates, the rotary screen is replaced and reset for continuous use, a module screen after replacement is repaired under a small size, during actual repair and replacement, the whole screen distributed in a surrounding mode does not need to be detached, and the replacement efficiency is greatly improved. When the rotary screen is replaced, only the screen which is locally broken is conveniently disassembled and repaired, the size of the screen is small during actual repair, the repair difficulty is greatly reduced, the repair efficiency is improved, modular local replacement is adopted for actual replacement, operation is easy, replacement is rapid, the efficiency of replacing and putting into use of the rotary screen is improved, and the use effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of drum screens, and more specifically, to a modular primary drum screen for coal chemical industry. Background Art

[0002] In the coal grinding section of modern coal chemical enterprises, the wet rod mill in operation grinds the raw coal delivered by the weigh feeder, the additives delivered by the additive pump, and the water delivered by the coal grinding water pump together. The ground water-coal slurry needs to be screened through the first-level drum screen at the end and sent to the low-pressure coal slurry pump. The large particles of coal slurry and some impurities in the drum screen will impact the screen. Under long-term action, the screen is prone to deformation and rupture due to stress fatigue.

[0003] In the prior art, the first-stage drum screen for coal chemical industry, during use, the first-stage drum screen of the coal grinding section will generally break and deform after about two to three cycles of operation, and the mill needs to be switched to check and replace the screen. However, since the screen is one-piece, it needs to be returned to the factory for replacement of the entire screen when it is partially broken, and the maintenance cycle is more than one month. At least five people are required to overhaul and replace the first-stage screen for a single time, and the maintenance time is about 5 hours. Moreover, when the screen is returned to the factory for repair many times, it is limited by the maintenance cycle and maintenance manpower, and the actual maintenance time is long, the efficiency is low, and the difficulty is great, and the use effect is not good. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a modular first-stage drum screen for coal chemical industry, which has the advantages of being easy to repair and replace and reducing mesh blockage.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a modular primary drum screen for coal chemical industry, comprising a first drum plate and a second drum plate, a reinforcing rib plate is fixedly connected between the first drum plate and the second drum plate, an inner support assembly is fixedly installed between adjacent reinforcing rib plates, a module screen is movably installed between adjacent inner support assemblies, a feed port is opened on the front of the second drum plate, a cleaning ring is arranged between the first drum plate and the second drum plate, and the cleaning ring array is distributed on the inner side of the module screen;

[0006] The reinforcing rib plates are connected between the first barrel plate and the second barrel plate in an annular manner with equal spacing, and the inner support assembly array is distributed between the reinforcing rib plates;

[0007] The inner support assembly includes an arc-shaped support plate, a slot and a positioning hole, the arc-shaped support plate is fixedly connected between the bell reinforcement rib plates, the slot is provided on the top surface of the arc-shaped support plate, and the positioning hole is provided inside the arc-shaped support plate;

[0008] The card slots are symmetrically distributed on both sides of the top of the arc-shaped support plate, and the positioning holes correspond to the card slots one by one and are connected to the card slots;

[0009] The modular screen comprises a screen frame, a screen, a clamping block and bolts, the screen is fixedly sleeved inside the screen frame, the screen frame is movably sleeved between adjacent arc-shaped support plates, and the inner side of the screen is an arc-shaped surface;

[0010] The clamping block is movably sleeved in the clamping groove, the bolt is threadedly sleeved on the side of the clamping block, and the clamping block is fixedly connected to the top of the screen frame and is symmetrically distributed on the left and right.

[0011] As a preferred technical solution of the utility model, an assembly set is fixedly installed on the front side of the No. 2 barrel plate, an electric push rod is fixedly installed inside the assembly set, the movable end of the electric push rod is fixedly connected to a cross plate, the front side of the cross plate is fixedly connected to a connecting ring, and the connecting ring is located in the assembly set.

[0012] As a preferred technical solution of the utility model, a connecting rod is fixedly sleeved inside the cleaning ring, and one end of the connecting rod movably passes through the second barrel plate and is fixedly connected to the connecting ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model unscrews the bolts in the corresponding module screen from the arc-shaped support plate for the broken screen, directly takes out the broken module screen from the drum screen, replaces the new module screen and inserts it, so that the block falls into the slot, and re-rotates the bolt so that the bolt is inserted into the positioning hole of the arc-shaped support plate to complete the replacement, and resets the drum screen for continued use. The replaced module screen is repaired in a small volume. During the actual repair and replacement, there is no need to remove the entire surrounding distributed screen. Only the partially broken screen can be conveniently disassembled and repaired. During the actual repair, the screen volume is reduced, the repair difficulty is greatly reduced, and the repair efficiency is improved. The actual replacement adopts modular local replacement, which is simple to operate and quick to replace, thereby improving the efficiency of replacing and putting the drum screen into use and having a good use effect.

[0015] 2. The utility model starts the electric push rod in the assembly set during the operation of the screen. As the drum screen rotates, the electric push rod pushes the connecting ring back and forth through the cross plate, thereby driving the connecting rod to drive the cleaning rings distributed in the array in the drum to move back and forth, and the reciprocating cleaning rings rub along the inner side of the module screen to clear blockages. When the screening is in operation, the inner arc surface of the screen is dynamically rubbed to avoid blockage and maintain a good screening effect. At the same time, it avoids damage due to excessive pressure at the local blockage, further reducing the risk of damage, reducing the frequency of maintenance and replacement, and having a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation of the reinforcing rib plate and the inner support assembly of the utility model;

[0019] Figure 4 It is a bottom schematic diagram of the inner support assembly, reinforcing rib plate and module screen of the utility model;

[0020] Figure 5 It is an exploded schematic diagram of the module screen and the inner support assembly of the utility model;

[0021] Figure 6 This is a schematic diagram of the connection between the reinforcing rib plate and the first barrel plate and the second barrel plate of the utility model;

[0022] Figure 7 This is a schematic diagram of the installation of the cleaning ring and the connecting rod of the utility model.

[0023] In the figure: 1. No. 1 cylinder plate; 2. No. 2 cylinder plate; 3. Reinforcing rib plate; 4. Feed inlet; 5. Inner support assembly; 51. Arc support plate; 52. Card slot; 53. Positioning hole; 6. Module screen; 61. Screen frame; 62. Screen; 63. Card block; 64. Bolt; 7. Assembly set; 8. Cleaning ring; 9. Connecting rod; 10. Connecting ring; 11. Cross plate; 12. Electric push rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 7 As shown, the utility model provides a modular first-stage drum screen for coal chemical industry, including a No. 1 drum plate 1 and a No. 2 drum plate 2, a reinforcing rib plate 3 is fixedly connected between the No. 1 drum plate 1 and the No. 2 drum plate 2, an inner support assembly 5 is fixedly installed between adjacent reinforcing rib plates 3, a module screen 6 is movably installed between adjacent inner support assemblies 5, a feed port 4 is opened on the front side of the No. 2 drum plate 2, a cleaning ring 8 is provided between the No. 1 drum plate 1 and the No. 2 drum plate 2, and the cleaning ring 8 array is distributed on the inner side of the module screen 6.

[0026] The reinforcing rib plates 3 are connected between the first barrel plate 1 and the second barrel plate 2 in an annular manner with equal spacing, and the inner support components 5 are distributed in an array between the reinforcing rib plates 3 .

[0027] By means of the surroundingly distributed reinforcing rib plates 3 and the array-distributed internal support components 5, the outside of the drum screen is divided into multiple groups of assembly spaces, so that the isolated installation and support of multiple groups of modular screens 6 can be achieved, which facilitates modular assembly and disassembly.

[0028] Among them, the inner support assembly 5 includes an arc-shaped support plate 51, a slot 52 and a positioning hole 53, the arc-shaped support plate 51 is fixedly connected between the bell reinforcement rib plates 3, the slot 52 is opened on the top surface of the arc-shaped support plate 51, the positioning hole 53 is opened inside the arc-shaped support plate 51, the slot 52 is symmetrically distributed on both sides of the top of the arc-shaped support plate 51, the positioning hole 53 corresponds to the slot 52 one by one and is connected to the slot 52, the module screen 6 includes a screen frame 61, a screen 62, a block 63 and a bolt 64, the screen 62 is fixedly sleeved inside the screen frame 61, the screen frame 61 is movably sleeved between adjacent arc-shaped support plates 51, the inner side surface of the screen 62 is an arc-shaped surface, the block 63 is movably sleeved in the slot 52, the bolt 64 is threadedly sleeved on the side of the block 63, the block 63 is fixedly connected to the top of the screen frame 61 and is symmetrically distributed on the left and right.

[0029] The inner support assembly 5 is used to enclose and support the module screen. The slot 52 and the block 63 cooperate with each other to achieve card connection and limitation, determine the position of the module screen 6, and adjust the socket position of the screen 62 in the screen frame 61 to ensure that the inner arc surface of the screen 62 is consistent with the inner arc surface of the arc support plate 51 and keeps it aligned. At the same time, the inner side surface of the reinforcing rib plate 3 is also an arc surface and is also aligned and consistent with the inner side surface of the screen 62, ensuring that the cleaning ring 8 can effectively perform friction and clearing along the inner arc surface of the screen 62. The bolt 64 cooperates with the socket of the positioning hole 53 to complete the convenient locking and positioning of the module screen.

[0030] Among them, the front of the second barrel plate 2 is fixedly installed with an assembly set 7, the inside of the assembly set 7 is fixedly installed with an electric push rod 12, the movable end of the electric push rod 12 is fixedly connected with a cross plate 11, the front of the cross plate 11 is fixedly connected with a connecting ring 10, and the connecting ring 10 is located in the assembly set 7.

[0031] Among them, a connecting rod 9 is fixedly sleeved inside the cleaning ring 8 , and one end of the connecting rod 9 movably passes through the second barrel plate 2 and is fixedly connected to the connecting ring 10 .

[0032] The electric push rod 12 is isolated and protected by the assembly set 7, and cooperates with the cross plate 11 to realize the pushing control of the connecting ring 10, and through the fixed connection between the connecting rod 9 and the connecting ring 10, the reciprocating movement control of the multiple groups of cleaning rings 8 distributed in the array is realized to complete the friction clearing.

[0033] The working principle and use process of the utility model are as follows: when the local screen 62 is broken, the machine is stopped and the common screen is partially dismantled. For the broken screen 62, the bolt 64 in the corresponding module screen 6 is unscrewed from the arc support plate 51, and the broken module screen 6 is directly taken out from the drum screen, and a new module screen 6 is replaced and inserted, so that the block 63 falls into the slot 52, and the bolt 64 is rotated again, so that the bolt 64 is inserted into the positioning hole 53 of the arc support plate 51, and the replacement is completed. The drum screen is reset for continued use, and the replaced module screen 6 is repaired with a small volume for the replaced module screen 6; when the screen is running, the electric push rod 12 in the assembly kit 7 is started. As the drum screen rotates, the electric push rod 12 reciprocates and pushes the connecting ring 10 to move through the cross plate 11, thereby driving the connecting rod 9 to drive the cleaning ring 8 distributed in the array in the cylinder to move back and forth, and the reciprocating cleaning ring 8 is rubbed and cleared along the inner side of the module screen 6.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A modular primary drum screen for coal chemical industry, comprising a first drum plate (1) and a second drum plate (2), characterized in that: A reinforcing rib plate (3) is fixedly connected between the first barrel plate (1) and the second barrel plate (2), an inner support assembly (5) is fixedly installed between adjacent reinforcing rib plates (3), a module screen (6) is movably installed between adjacent inner support assemblies (5), a feed port (4) is opened on the front of the second barrel plate (2), a cleaning ring (8) is provided between the first barrel plate (1) and the second barrel plate (2), and an array of the cleaning rings (8) is distributed on the inner side of the module screen (6); The reinforcing rib plates (3) are connected between the first barrel plate (1) and the second barrel plate (2) at equal intervals in an annular manner, and the inner support components (5) are distributed in an array between the reinforcing rib plates (3); The inner support assembly (5) comprises an arc-shaped support plate (51), a slot (52) and a positioning hole (53); the arc-shaped support plate (51) is fixedly connected between the bell reinforcement rib plates (3); the slot (52) is provided on the top surface of the arc-shaped support plate (51); and the positioning hole (53) is provided inside the arc-shaped support plate (51); The clamping slots (52) are symmetrically distributed on both sides of the top of the arc-shaped support plate (51), and the positioning holes (53) correspond to the clamping slots (52) one by one and are connected to the clamping slots (52); The modular screen (6) comprises a screen frame (61), a screen (62), a clamping block (63) and a bolt (64); the screen (62) is fixedly sleeved inside the screen frame (61); the screen frame (61) is movably sleeved between adjacent arc-shaped support plates (51); and the inner side surface of the screen (62) is an arc-shaped surface; The clamping block (63) is movably sleeved in the clamping groove (52), the bolt (64) is threadedly sleeved on the side of the clamping block (63), and the clamping block (63) is fixedly connected to the top of the screen frame (61) and is symmetrically distributed on the left and right.

2. A modular primary drum screen for coal chemical industry according to claim 1, characterized in that: The front side of the second barrel plate (2) is fixedly mounted with an assembly sleeve (7), the interior of the assembly sleeve (7) is fixedly mounted with an electric push rod (12), the movable end of the electric push rod (12) is fixedly connected with a transverse plate (11), the front side of the transverse plate (11) is fixedly connected with a connecting ring (10), and the connecting ring (10) is located in the assembly sleeve (7).

3. A modular primary drum screen for coal chemical industry according to claim 2, characterized in that: A connecting rod (9) is fixedly sleeved inside the cleaning ring (8), and one end of the connecting rod (9) movably passes through the second barrel plate (2) and is fixedly connected to the connecting ring (10).

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