Filter screen plate structure in gas heater

Abstract

The utility model discloses a filter screen plate structure in a coal gas heater in the technical field of coal gas heaters, which comprises a heating box, a heat exchange tube is arranged in the heating box, a filter screen plate body is movably mounted on the inner wall of the heating box, a square box is fixedly mounted at the front end of the filter screen plate body, and a filter screen plate is arranged in the square box. The other end of the square box penetrates through the heating box and is fixedly connected with a baffle. Through the arrangement of the clamping groove, the inserting plate and the limiting assembly, when a worker needs to detach the filter screen plate body for cleaning, the inserting plate can move through the limiting assembly and is pulled out of the clamping groove, and therefore the limiting effect of the square box and the filter screen plate body can be relieved; the filter screen plate body can be pulled out of the heating box by pulling the handle, so that the filter screen plate body can be detached without using additional tools, the operation is convenient and fast, and the cleaning work of the filter screen plate body by workers is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of gas heater technology, and in particular to a filter screen structure in a gas heater. Background Technology

[0002] A gas heater is a heat exchange device designed to heat blast furnace gas before it enters the furnace for combustion. Because blast furnace gas contains many impurities, gas heaters are usually equipped with internal filter screens to filter out these impurities during long-term operation, thereby improving the quality of the gas entering the furnace.

[0003] However, existing technologies have some problems: although the filter plates in existing gas heaters can filter impurities in the gas, in actual use, the filtered impurities will slowly accumulate on the filter plates, which can easily clog the mesh and reduce the gas flow. Therefore, the staff needs to remove the filter plates for cleaning. However, the filter plates are usually installed inside the gas heater using bolts and other fasteners, and the staff needs to use additional tools to disassemble them, which is cumbersome and inefficient. Therefore, we propose a filter plate structure for gas heaters. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a filter screen structure for a gas heater. By enabling quick disassembly of the filter screen, it facilitates cleaning by workers and improves work efficiency.

[0005] The purpose of this utility model is achieved as follows: A filter plate structure in a gas heater includes a heating box, inside which a heat exchange tube is provided. A filter plate body is movably installed on the inner wall of the heating box. A square box is fixedly installed at the front end of the filter plate body. The other end of the square box passes through the heating box and is fixedly connected to a baffle. Two handles are fixedly installed on the baffle. A slot is opened in the inner wall of the heating box. An insert plate is movably inserted into the square box. One end of the insert plate extends into the slot. The insert plate and the square box are also connected by a limiting component. The insert plate can be kept inserted in the slot by the limiting component and can also be pulled out of the slot by the limiting component.

[0006] Optionally, the limiting component includes a round rod that is movably inserted into the square box. One end of the round rod passes through a baffle and is fixedly connected to a pull handle. The top of the baffle has an oblique hole. A round block located inside the oblique hole is fixedly installed on the round rod. A spring is movably sleeved on the outer surface of the round rod. The two ends of the spring are fixedly connected to the pull handle and the baffle, respectively.

[0007] Optionally, a pad is fixedly installed at one end of the baffle near the square box, and the other end of the pad is attached to the surface of the heating box.

[0008] Optionally, a dust collection box is fixedly installed at the bottom left side of the filter screen body, and the length of the dust collection box is the same as the length of the filter screen body.

[0009] Optionally, a filter element is movably installed inside the filter screen body, and the filter element is configured to be folded.

[0010] Optionally, the circular block is slidably connected inside the oblique hole, the inner wall of which is coated with a lubricating layer.

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

[0012] This utility model, by setting a slot, an insert plate, and a limiting component, allows the insert plate to be moved by the limiting component when the operator needs to disassemble the filter screen body for cleaning. This allows the insert plate to be pulled out of the slot, thereby releasing the limiting effect between the box and the filter screen body. The operator can then pull the handle to pull the filter screen body out of the heating box, thus achieving the disassembly of the filter screen body without the need for additional tools. This is convenient, quick, and facilitates the cleaning of the filter screen body by the operator. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0014] Figure 1 This is a structural schematic diagram provided by this utility model.

[0015] Figure 2 This is a cross-sectional view of the internal structure of the heating box provided by this utility model.

[0016] Figure 3 This is a side sectional view of the structure provided by this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the filter screen body provided by this utility model.

[0018] Figure 5 This is a top cross-sectional view of the filter screen body provided by this utility model.

[0019] Figure 6 yes Figure 5A magnified schematic diagram of the structure at point A in the middle.

[0020] In the diagram: 1. Heating box; 2. Heat exchange tube; 3. Filter plate body; 4. Square box; 5. Baffle; 6. Handle; 7. Slot; 8. Insert plate; 9. Round rod; 10. Pull handle; 11. Slanted hole; 12. Round block; 13. Spring; 14. Pad; 15. Dust collection box; 16. Filter element. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 6 As shown in the figure, the filter plate structure in a gas heater provided by this utility model embodiment includes a heating box 1, a heat exchange tube 2 is provided inside the heating box 1, a filter plate body 3 is movably installed on the inner wall of the heating box 1, a square box 4 is fixedly installed at the front end of the filter plate body 3, the other end of the square box 4 passes through the heating box 1 and is fixedly connected to a baffle 5, two handles 6 are fixedly installed on the baffle 5, a slot 7 is opened on the inner wall of the heating box 1, an insert plate 8 is movably inserted into the square box 4, one end of the insert plate 8 extends into the slot 7, the insert plate 8 and the square box 4 are also connected by a limiting component, the insert plate 8 can be kept inserted in the slot 7 by the limiting component, and can also be pulled out from the slot 7 by the limiting component.

[0023] Furthermore, the limiting component includes a round rod 9, which is movably inserted into the square box 4. One end of the round rod 9 passes through the baffle 5 and is fixedly connected to a pull handle 10. The top of the insert plate 8 has an oblique hole 11. A round block 12 located inside the oblique hole 11 is fixedly installed on the round rod 9. A spring 13 is movably sleeved on the outer surface of the round rod 9. The two ends of the spring 13 are fixedly connected to the pull handle 10 and the baffle 5, respectively.

[0024] By setting the spring 13 to a stretched state, the spring 13's restoring force will cause the round rod 9 to tend to move into the square box 4, thereby causing the round block 12 to press against the inner wall of the inclined hole 11, keeping one end of the insert plate 8 inside the slot 7. This achieves the limitation of the square box 4 and the filter screen body 3. By pulling the handle 10, the round rod 9 drives the round block 12 to move outward from the square box 4, thereby causing the round block 12 to press against the inner wall of the inclined hole 11, allowing the insert plate 8 to be pulled out from inside the slot 7. This releases the limitation of the square box 4 and the filter screen body 3, making it easier for staff to pull out the filter screen body 3 for cleaning.

[0025] Furthermore, a pad 14 is fixedly installed at one end of the baffle 5 near the square box 4, and the other end of the pad 14 is attached to the surface of the heating box 1.

[0026] The pad 14 can be made of rubber. Because rubber is soft and elastic, it can improve the sealing between the baffle 5 and the heating box 1, thereby preventing gas from leaking out.

[0027] Furthermore, a dust collection box 15 is fixedly installed on the bottom left side of the filter screen body 3, and the length of the dust collection box 15 is the same as the length of the filter screen body 3.

[0028] The dust collection box 15 is designed to collect impurities that fall from the surface of the filter plate body 3, thus avoiding the situation where impurities fall into the heating box 1 and are difficult to clean.

[0029] Furthermore, a filter element 16 is movably installed inside the filter screen body 3, and the filter element 16 is configured in a folded shape.

[0030] The design of filter element 16 allows for further filtration of impurities such as tar in the gas, and the pleated design increases its effective filtration area, thereby extending its service life.

[0031] Furthermore, the circular block 12 is slidably connected inside the inclined hole 11, and the inner wall of the inclined hole 11 is coated with a lubricating layer.

[0032] Working principle and usage process of this utility model:

[0033] When the staff needs to disassemble the filter plate body 3 for cleaning, they can first hold the handle 6 and then pull the pull handle 10, so that the round rod 9 moves the round block 12 close to the handle 6. Due to the movement of the round block 12, it will squeeze the inner wall of the inclined hole 11, thereby allowing the insert plate 8 to move and be pulled out from the inside of the slot 7, thus releasing the limiting effect between the opposite box 4 and the filter plate body 3. Then, the staff can continue to pull the handle 6 to pull the filter plate body 3 out from the inside of the heating box 1, making it convenient for the staff to clean the filter plate body 3. The filter element 16 inside the filter plate body 3 can also be removed and replaced. After completion, the filter plate body 3 can be installed back into the heating box 1.

[0034] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A filter screen structure in a coal gas heater comprising a heating box (1), characterized in that: The inside of the heating box (1) is provided with heat exchange pipes (2), the inner wall of the heating box (1) is movably provided with a filter screen plate body (3), the front end of the filter screen plate body (3) is fixedly provided with a square box (4), the other end of the square box (4) penetrates the heating box (1) and is fixedly connected with a baffle (5), two handles (6) are fixedly installed on the baffle (5), the inner wall of the heating box (1) is provided with a clamping groove (7), the square box (4) is movably inserted with a plug plate (8), one end of the plug plate (8) extends into the clamping groove (7), the plug plate (8) and the square box (4) are further connected through a limiting assembly, the plug plate (8) can be inserted into the clamping groove (7) through the limiting assembly, and the plug plate (8) can be pulled out of the clamping groove (7) through the limiting assembly.

2. A filter screen structure in a coal gas heater according to claim 1, characterized in that: The limiting assembly comprises a round rod (9), the round rod (9) is movably inserted on the square box (4), one end of the round rod (9) penetrates the baffle (5) and is fixedly connected with a pull handle (10), the top of the plug plate (8) is provided with an inclined hole (11), the round rod (9) is fixedly provided with a round block (12) located in the inclined hole (11), the outer surface of the round rod (9) is movably sleeved with a spring (13), and the two ends of the spring (13) are fixedly connected with the pull handle (10) and the baffle (5) respectively.

3. A filter screen structure in a coal gas heater according to claim 1, characterized in that: The end of the baffle (5) close to the square box (4) is fixedly provided with a pad (14), and the other end of the pad (14) is attached to the surface of the heating box (1).

4. A filter screen structure in a coal gas heater according to claim 1, characterized in that: The bottom of the left side of the filter screen plate body (3) is fixedly provided with a dust collection box (15), and the length of the dust collection box (15) is the same as that of the filter screen plate body (3).

5. A filter screen structure in a coal gas heater according to claim 1, characterized in that: The inside of the filter screen plate body (3) is movably provided with a filter core (16), and the filter core (16) is arranged in a folded shape.

6. A filter screen structure in a coal gas heater according to claim 2, characterized in that: The round block (12) is slidably connected in the inclined hole (11), and the inner wall of the inclined hole (11) is coated with a lubricating layer. The other end of the baffle (5) is fixedly provided with a pad (14), and the other end of the pad (14) is attached to the surface of the heating box (1).

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