Screen tray connecting device of coal powder screening machine

Abstract

The utility model relates to the technical field of sieve tray connection, and discloses a coal powder sieving machine sieve tray connecting device which comprises a machine body, four bottom blocks are fixedly connected to the upper side and the lower side of the inner wall of the machine body respectively, an outer frame is connected to the upper portions of the bottom blocks in an attached mode, a sieve is connected to the interior of the outer frame in a clamped mode, and four through grooves are formed in the interior of the outer frame. An outer connecting assembly is connected into the through groove in a clamped mode, the outer connecting assembly is used for ensuring the mounting stability of the outer frame, the upper portion of the outer frame is fixedly connected with four connecting blocks which are the same as the bottom blocks in position, bolts are in threaded connection with the interiors of the connecting blocks, and connecting sleeves are in threaded connection with the exteriors of one sides of the bolts. According to the utility model, the mounting stability of the screen mesh is ensured through double connection, the screen mesh is convenient to disassemble, replace or maintain, and the screen mesh and the outer frame are stably mounted, so that the screen mesh is prevented from falling off when the pulverized coal is screened, and the screening effect of the pulverized coal is prevented from being influenced.

Description

Technical Field

[0001] This utility model relates to the field of screen plate connection technology, and in particular to a screen plate connection device for a coal powder screening machine. Background Technology

[0002] The screen plate connecting device of a coal powder screening machine is a piece of equipment used to separate coal powder particles. It is an important component of the coal powder screening machine, mainly used to support and fix the screen plate, while ensuring stability and efficiency in the screening process.

[0003] Coal powder screening machines are common equipment in coal production and processing, widely used for screening, grading, and impurity removal of coal powder. As the coal industry's requirements for screening accuracy, efficiency, and ease of maintenance continue to increase, the design and structure of coal powder screening machines are constantly being improved. However, in traditional coal powder screening machines, the installation and disassembly of the screens are often a major challenge in operation and maintenance. Therefore, a screen plate connection device for coal powder screening machines is proposed to solve these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a screen plate connection device for a coal powder screening machine, aiming to improve the problem that the installation and disassembly of the screen in traditional coal powder screening machines is often a major challenge in operation and maintenance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a screen plate connecting device for a coal powder screening machine, comprising a machine body, four base blocks fixedly connected to the upper and lower sides of the inner wall of the machine body, an outer frame attached to the upper part of the base blocks, a screen mesh engaged inside the outer frame, four through slots opened inside the outer frame, and an external connecting component engaged inside the through slots, the external connecting component being used to ensure the stability of the installation of the outer frame, four connecting blocks at the same position as the base blocks fixedly connected to the upper part of the outer frame, bolts threaded inside the connecting blocks, a connecting sleeve threaded on one side of the bolts, a threaded head threaded on the bottom side of the connecting sleeve, and one end of the threaded head fixedly connected to the upper part of the base blocks.

[0006] As a further description of the above technical solution:

[0007] The screen has four through holes inside. A spring is fixedly connected to one side of the inner wall of each through hole. A positioning head is fixedly connected to one end of the spring and is slidably connected inside the through hole.

[0008] As a further description of the above technical solution:

[0009] The external connecting assembly includes a sleeve that is engaged inside the through groove. A spring is fixedly connected to the upper part of the inner wall of the sleeve, and one end of the spring is fixedly connected to the upper part of the connecting sleeve.

[0010] As a further description of the above technical solution:

[0011] The spring is fitted onto the outside of the bolt.

[0012] As a further description of the above technical solution:

[0013] The screen is fixedly connected to four sliders on the outside, and four sliding grooves are opened on the inner side of the outer frame, with the sliders engaging inside the sliding grooves.

[0014] As a further description of the above technical solution:

[0015] The inner side of the outer frame has four positioning holes, and the positioning head is slidably connected inside the positioning holes.

[0016] As a further description of the above technical solution:

[0017] The outer frame and the screen are slidably connected inside the machine body, and pull rings are fixedly connected to the upper side of the two connecting blocks.

[0018] As a further description of the above technical solution:

[0019] The upper discharge port is fixedly connected to the upper interior of the machine body.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the screen plate is placed inside the machine body and fits against the bottom block by pulling the ring. The threaded head is inserted into the sleeve. After the bolt is screwed into the connecting block to half of the connecting sleeve, the connecting sleeve can be driven to be screwed onto the outside of the threaded head. This achieves double connection to ensure the stability of the screen installation and facilitates disassembly, replacement or maintenance.

[0022] 2. In this utility model, the screen is inserted into the outer frame by aligning the slider with the slide groove. The positioning head is squeezed and generates a rebound force on the second spring. After installation, the positioning head moves to the positioning hole under the rebound force of the second spring, thus realizing the stable installation of the screen and the outer frame. This prevents the screen from falling off during coal powder screening and affecting the coal powder screening effect. Attached Figure Description

[0023] Figure 1 This is a perspective view of a screen plate connection device for a coal powder screening machine proposed in this utility model;

[0024] Figure 2This is a cross-sectional view of a screen plate connecting device for a coal powder screening machine proposed in this utility model;

[0025] Figure 3 This is a split view of the screen plate of a coal powder screening machine screen plate connecting device proposed in this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 This is a schematic diagram of the outer frame structure of a screen plate connecting device for a coal powder screening machine proposed in this utility model;

[0028] Figure 6 for Figure 5 Enlarged view of section B in the middle.

[0029] Legend:

[0030] 1. Machine body; 2. Outer frame; 3. Slide groove; 4. Screen; 5. Sliding block; 6. Connecting block; 7. Pull ring; 8. Bolt; 9. Through groove; 10. Sleeve; 11. Spring 1; 12. Connecting sleeve; 13. Threaded head; 14. Bottom block; 15. Through hole; 16. Spring 2; 17. Positioning head; 18. Positioning hole; 19. Upper discharge port. Detailed Implementation

[0031] 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.

[0032] Reference Figure 2 , Figure 5 , Figure 6This utility model provides an embodiment of a coal powder screening machine screen plate connecting device, including a machine body 1. Four base blocks 14 are fixedly connected to the upper and lower sides of the inner wall of the machine body 1. An outer frame 2 is attached to the upper part of each base block 14. A screen 4 is engaged inside the outer frame 2. Four through slots 9 are provided inside the outer frame 2. External connecting components are engaged inside the through slots 9 to ensure the stability of the outer frame 2 installation. Four connecting components, positioned at the same location as the base blocks 14, are fixedly connected to the upper part of the outer frame 2. Block 6, the internal thread of the connecting block 6 is connected to a bolt 8, the external thread of one side of the bolt 8 is connected to a connecting sleeve 12, the internal bottom thread of the connecting sleeve 12 is connected to a threaded head 13, one end of the threaded head 13 is fixedly connected to the upper part of the bottom block 14; the external connecting assembly includes a sleeve 10, the sleeve 10 is engaged in the inside of the through groove 9, the upper part of the inner wall of the sleeve 10 is fixedly connected to a spring 11, one end of the spring 11 is fixedly connected to the upper part of the connecting sleeve 12, and the spring 11 is sleeved on the external side of the bolt 8.

[0033] The screen disc is placed inside the machine body 1 by pulling the ring 7, so that it fits against the bottom block 14. At the same time, the threaded head 13 is inserted into the sleeve 10. Then, the bolt 8 is rotated so that it is screwed into the connecting block 6 and the connecting sleeve 12. When the bolt 8 is screwed to half the position of the connecting sleeve 12, it stops rotating downwards, so that the connecting sleeve 12 can be rotated so that it is screwed onto the outside of the threaded head 13 and threadedly connected to it. This achieves a double connection, ensuring the stability of the screen 4 installation and facilitating its disassembly, replacement or maintenance.

[0034] Reference Figure 1 , Figure 3 , Figure 4 The screen 4 has four through holes 15 inside. A spring 16 is fixedly connected to one side of the inner wall of the through hole 15. A positioning head 17 is fixedly connected to one end of the spring 16. The positioning head 17 is slidably connected inside the through hole 15. The outer frame 2 has four positioning holes 18 inside. The positioning head 17 is slidably connected inside the positioning holes 18. Four sliders 5 are fixedly connected to the outside of the screen 4. Four sliding grooves 3 are opened on the inner side of the outer frame 2. The sliders 5 are engaged inside the sliding grooves 3. The outer frame 2 and the screen 4 are slidably connected inside the machine body 1. Pull rings 7 are fixedly connected to one side of the upper part of the two connecting blocks 6. The upper discharge port 19 is fixedly connected to the upper inside of the machine body 1.

[0035] By aligning the slider 5 with the slide groove 3 to insert the screen 4 into the interior of the outer frame 2, the positioning head 17 is pressed by the outer frame 2 as the screen 4 is inserted into the outer frame 2. Simultaneously, the positioning head 17 is pressed against the second spring 16, generating a rebound force that moves the positioning head 17 into the through hole 15. After the screen 4 is installed, the positioning head 17 is no longer pressed and is pushed into the positioning hole 18 by the rebound force of the second spring 16. This achieves a stable installation of the screen 4 and the outer frame 2, preventing the screen 4 from falling off during coal powder screening and affecting the screening effect.

[0036] Working principle: When the device needs to be installed, the screen 4 is inserted into the outer frame 2, and the slider 5 is driven into the groove 3. As the screen 4 is inserted into the outer frame 2, the positioning head 17 is squeezed by the outer frame 2, which simultaneously squeezes the second spring 16, causing the positioning head 17 to move into the through hole 15. After the screen 4 is installed, the positioning head 17 is no longer squeezed and moves into the positioning hole 18 by the rebound force of the second spring 16. This achieves a stable installation of the screen 4 and the outer frame 2, preventing the screen 4 from falling off during coal powder screening and affecting the coal powder screening effect. The screen plate is placed inside the machine body 1 and fits against the bottom block 14. At the same time, the threaded head 13 is inserted into the sleeve 10. Then, the bolt 8 is rotated and screwed into the connecting block 6 into the connecting sleeve 12. When the bolt 8 is no longer in the connecting sleeve 12 and rotates downward, the connecting sleeve 12 can be rotated so that it is screwed onto the outside of the threaded head 13. This double connection ensures the stability of the screen 4 installation and facilitates its disassembly, replacement or maintenance.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coal powder screening machine screen deck connection device comprising a machine body (1), characterized in that: The inner wall of the machine body (1) is fixedly connected with four bottom blocks (14) on both sides, the upper part of the bottom block (14) is connected with an outer frame (2), the inner part of the outer frame (2) is connected with a screen (4), four through grooves (9) are arranged in the inner part of the outer frame (2), an outer connecting assembly is connected in the through groove (9), the outer connecting assembly is used to ensure the stability of the outer frame (2), four connecting blocks (6) are fixedly connected on the upper part of the outer frame (2), the inner part of the connecting block (6) is threadedly connected with a bolt (8), one side of the bolt (8) is externally threadedly connected with a connecting sleeve (12), the inner bottom side of the connecting sleeve (12) is threadedly connected with a threaded head (13), one end of the threaded head (13) is fixedly connected with the upper part of the bottom block (14).

2. A coal powder screening machine screen deck connecting device according to claim 1, characterized in that: The inner part of the screen (4) is provided with four through holes (15), one side of the inner wall of the through hole (15) is fixedly connected with a spring (16), one end of the spring (16) is fixedly connected with a positioning head (17), the positioning head (17) is slidingly connected in the inner part of the through hole (15).

3. A coal powder screening machine screen deck connecting device according to claim 1, characterized in that: The outer connecting assembly comprises a sleeve (10), the sleeve (10) is connected in the inner part of the through groove (9), the inner wall of the sleeve (10) is fixedly connected with a spring (11) on the upper part, one end of the spring (11) is fixedly connected with the upper part of the connecting sleeve (12).

4. A coal powder screening machine screen deck connection device according to claim 3, characterized in that: The spring (11) is sleeved on one side of the outer part of the bolt (8).

5. A coal powder screening machine screen deck connecting device according to claim 1, characterized in that: The outer part of the screen (4) is fixedly connected with four sliding blocks (5), the inner side of the outer frame (2) is provided with four sliding grooves (3), the sliding block (5) is connected in the inner part of the sliding groove (3).

6. A coal powder screening machine screen deck connection device according to claim 2, characterized in that: The inner side of the outer frame (2) is provided with four positioning holes (18), the positioning head (17) is slidingly connected in the inner part of the positioning hole (18).

7. A coal powder screening machine screen deck connecting device according to claim 1, characterized in that: The outer frame (2) and the screen (4) are slidingly connected in the inner part of the machine body (1), the upper part of the two connecting blocks (6) is fixedly connected with a pull ring (7) on one side.

8. A coal powder screening machine screen deck connecting device according to claim 1, characterized in that: The upper inner part of the machine body (1) is fixedly connected with an upper discharge port (19).

Images