Ventilation equipment for underground fire engineering

Abstract

The underground fire engineering ventilation equipment comprises an air shaft, a through groove matched with a fixing frame is formed in one end of the top of a second pipeline, a limiting mechanism for limiting the fixing frame is arranged at one end of the inner wall of the through groove, and the limiting mechanism comprises two symmetrical mounting grooves formed in one end of the through groove; positioning columns are slidably arranged in the two mounting grooves, fixing rings matched with the mounting grooves are fixed to the outer walls of the ends, close to the fixing frame, of the positioning columns, the tops of the ends, close to the fixing frame, of the positioning columns are in an oblique angle shape, and two positioning holes matched with the positioning columns are formed in the outer walls of the ends, close to the positioning columns, of the fixing frame; a filter screen plate is installed on the inner wall of the fixing frame, and a sealing ring is arranged on the outer wall of the fixing frame. According to the utility model, the effect of quickly disassembling the filter screen plate is realized, so that a worker can conveniently clean or replace the filter screen plate, a large amount of manpower and time cost are saved, the equipment can recover to operate more quickly, and the use efficiency of the equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of fire protection engineering technology, and in particular to a ventilation device for underground fire protection engineering. Background Technology

[0002] Currently, with technological advancements, people are increasingly emphasizing workplace safety. Underground locations are generally highly enclosed spaces, and their ventilation and temperature control systems are typically implemented through HVAC equipment. Places such as underground electrical rooms, warehouses, laboratories, and parking garages, where personnel frequently enter and exit, have particularly critical environmental safety requirements. If ventilation abnormalities occur, pollutants can easily accumulate in underground rooms, increasing the concentration of harmful gases. In the event of a fire, smoke from underground locations is difficult to expel to the outside; therefore, ventilation equipment is generally installed in underground spaces.

[0003] Existing ventilation equipment used in underground fire protection projects has several drawbacks. When a fire occurs and smoke needs to be exhausted, the underground fire protection space often contains large amounts of dust and smoke. While the equipment typically uses filter screens to filter the smoke and prevent duct blockage, these screens are usually fixed in place. Disassembly, cleaning, or maintenance of the filter screens is cumbersome, time-consuming, and labor-intensive, indirectly increasing the workload and time required for personnel. Therefore, there is an urgent need for a new type of ventilation equipment for underground fire protection projects to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a ventilation device for underground fire protection engineering.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ventilation device for underground fire protection engineering includes a ventilation shaft. The top of the ventilation shaft is provided with a cross passage. A first pipe is connected to the center of the cross passage. The other end of the first pipe is connected to a communicating second pipe. The ventilation shaft and the second pipe are arranged in an L-shape. A fixing frame is provided inside the second pipe. A through groove adapted to the fixing frame is provided at one end of the top of the second pipe. A limiting mechanism for limiting the fixing frame is provided at one end of the inner wall of the through groove.

[0007] The limiting mechanism includes two symmetrical mounting slots at one end of the through slot. A positioning post is slidably provided inside each of the two mounting slots. A fixing ring adapted to the mounting slot is fixed to the outer wall of the end of the positioning post near the fixing frame. The top of the end of the positioning post near the fixing frame is angled. Two positioning holes adapted to the positioning post are provided on the outer wall of the end of the fixing frame near the positioning post. A filter screen is installed on the inner wall of the fixing frame, and a sealing ring is provided on the outer wall of the fixing frame.

[0008] Preferably, the top of the mounting groove is provided with a straight groove communicating with its interior, and the top of the outer wall of each of the two fixing rings is fixed with a toggle rod, and the top of the end of the toggle rod passing through the straight groove is fixed with the same connecting rod.

[0009] Preferably, one end of the second spring is fixed to the end of the fixing ring away from the fixing frame, and the other end of the second spring is fixedly connected to one end of the inner wall of the mounting groove.

[0010] Preferably, guide grooves are provided on both sides of the through groove. The same guide rod is fixed at the top and bottom of the inside of the guide groove, and a matching slider is slidably provided on the outer wall of the guide rod. The same abutment is fixed on the side of the two sliders that are close to each other, and the abutment is adapted to the inner diameter of the through groove. Limiting posts are fixed on both sides of the top of the abutment. Limiting holes are provided at the bottom of the fixing frame, and the limiting posts are adapted to the limiting holes. The limiting posts can limit the fixing frame, so that the fixing frame can be inserted into the inside of the second pipe.

[0011] Preferably, one end of a first spring is fixed to the top of each of the two sliders, and the other end of the first spring is fixed to the top of the inner wall of the guide groove. The first spring is located on the outer surface of the guide rod. A storage groove for storing the abutment is opened at the bottom of the inner wall of the second pipe. A ventilation mechanism is provided at the top of the inside of the first pipe. The abutment can pop the fixed frame out a certain distance for easy handling by the staff.

[0012] Preferably, the ventilation mechanism includes a mounting plate fixed to the top of the inner wall of the first duct, a fan is mounted at the bottom of the mounting plate, a drive motor is mounted at the top of the mounting plate, and the output shaft of the drive motor is fixedly connected to the rotating shaft of the fan.

[0013] Preferably, an inspection door is provided at the bottom of the outer wall of one end of the ventilation shaft.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. Due to the adoption of a limiting mechanism, the bottom of the fixed frame is squeezed against the chamfer of the positioning post, which then compresses the positioning post into the mounting groove. When the positioning hole aligns with one end of the positioning post, the second spring will drive the positioning post to reset and insert it into the positioning hole to limit the fixed frame. During disassembly, pulling the connecting rod can simultaneously move both positioning posts away from the fixed frame, thus achieving the effect of quick disassembly of the filter screen. This facilitates the cleaning or replacement of the filter screen by the staff, saves a lot of manpower and time costs, allows the equipment to resume operation more quickly, and improves the efficiency of equipment use.

[0016] 2. Due to the use of a stop plate and a limiting post, when the positioning post releases its restriction on the fixed frame, the first spring can pull the slider upward and drive the stop plate to reset. Then, the stop plate will pop the fixed frame out a certain distance. The limiting post cooperates with the limiting hole at the bottom of the fixed frame to limit the fixed frame during installation, preventing the fixed frame from shaking randomly. This makes it easier for workers to pick up and install the fixed frame, improves the portability of operation, reduces operation time and difficulty, and thus improves the overall work efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a ventilation device for underground fire protection engineering proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the ventilation mechanism of an underground fire protection engineering ventilation device proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the bottom of the ventilation shaft of an underground fire protection engineering ventilation device proposed in this utility model;

[0020] Figure 4 This is a partial cross-sectional view of the second pipe of an underground fire protection ventilation device proposed in this utility model.

[0021] Figure 5 This is a schematic diagram of a second partial cross-sectional structure of the second pipe of an underground fire protection ventilation device proposed in this utility model;

[0022] Figure 6 This is a partial exploded structural diagram of the limiting mechanism of the ventilation equipment in an underground fire protection project proposed in this utility model.

[0023] In the diagram: 1. Ventilation shaft; 101. Cross passage; 102. Inspection door; 2. Second pipe; 201. Support plate; 202. Slider; 203. Guide rod; 204. First spring; 205. Guide groove; 206. Mounting groove; 207. Straight groove; 3. First pipe; 301. Mounting plate; 302. Fan; 303. Drive motor; 4. Fixing frame; 401. Filter screen; 402. Positioning hole; 403. Second spring; 404. Positioning post; 405. Fixing ring; 406. Actuating rod; 407. Connecting rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Reference Figure 1-6A ventilation device for underground fire protection engineering includes a ventilation shaft 1. The top of the ventilation shaft 1 is provided with a cross passage 101. A first pipe 3 is connected to the center of the cross passage 101. The other end of the first pipe 3 is connected to a second pipe 2. The ventilation shaft 1 and the second pipe 2 are arranged in an L-shape. A fixing frame 4 is provided inside the second pipe 2. A through groove adapted to the fixing frame 4 is provided at one end of the top of the second pipe 2. A limiting mechanism for limiting the fixing frame 4 is provided at one end of the inner wall of the through groove.

[0026] The limiting mechanism includes two symmetrical mounting slots 206 opened at one end of the through groove. A positioning post 404 is slidably provided inside each of the two mounting slots 206. A fixing ring 405 adapted to the mounting slot 206 is fixed to the outer wall of the end of the positioning post 404 near the fixing frame 4. The top of the end of the positioning post 404 near the fixing frame 4 is angled to facilitate the fixing frame 4 to squeeze the positioning post 404 and insert it into the through groove. Two positioning holes 402 adapted to the positioning post 404 are opened on the outer wall of the end of the fixing frame 4 near the positioning post 404. The positioning holes 402 can limit the fixing frame 4. A filter screen plate 401 is installed on the inner wall of the fixing frame 4, and a sealing ring is provided on the outer wall of the fixing frame 4.

[0027] In this utility model, the top of the mounting groove 206 is provided with a straight groove 207 that communicates with its interior. The top of the outer wall of the two fixing rings 405 is fixed with a toggle rod 406, and the top of the end of the toggle rod 406 that passes through the straight groove 207 is fixed with the same connecting rod 407. By toggling the connecting rod 407, the positioning post 404 can be easily released from its limitation on the fixing frame 4.

[0028] In this utility model, the end of the fixing ring 405 away from the fixing frame 4 is fixed with one end of the second spring 403, and the other end of the second spring 403 is fixedly connected to one end of the inner wall of the mounting groove 206.

[0029] In this utility model, guide grooves 205 are provided on both sides of the through groove. The same guide rod 203 is fixed at the top and bottom of the guide groove 205. The outer wall of the guide rod 203 is slidably provided with a matching slider 202. The side of the two sliders 202 that are close to each other is fixed with the same abutment 201. The abutment 201 is adapted to the inner diameter of the through groove. Limiting posts are fixed on both sides of the top of the abutment 201. Limiting holes are provided at the bottom of the fixing frame 4. The limiting posts are adapted to the limiting holes. The limiting posts can limit the fixing frame 4, making it convenient for the fixing frame 4 to be inserted into the interior of the second pipe 2.

[0030] In this utility model, one end of the first spring 204 is fixed to the top of each of the two sliders 202, and the other end of the first spring 204 is fixed to the top of the inner wall of the guide groove 205. The first spring 204 is located on the outer surface of the guide rod 203. A storage groove for a storage plate 201 is provided at the bottom of the inner wall of the second pipe 2. The plate 201 can pop the fixed frame 4 out a distance for easy access by the staff. A ventilation mechanism is provided at the top of the inside of the first pipe 3.

[0031] In this utility model, the ventilation mechanism includes a mounting plate 301 fixed to the top of the inner wall of the first pipe 3, a fan 302 mounted at the bottom of the mounting plate 301, a drive motor 303 mounted at the top of the mounting plate 301, and the output shaft of the drive motor 303 is fixedly connected to the rotating shaft of the fan 302. The fan 302 can ventilate the basement.

[0032] In this utility model, an inspection door 102 is provided at the bottom of the outer wall of one end of the ventilation shaft 1.

[0033] Working Principle: When ventilation of the basement is required, the drive motor 303 is started, which drives the fan 302 to rotate. Ventilation then occurs through the first pipe 3 and the second pipe 2. During ventilation, the filter plate 401 filters the intake air to prevent blockage of the second pipe 2 and the first pipe 3, thus ensuring effective ventilation. When cleaning the filter plate 401 is required, the access door 102 is opened, and the connecting rod 407 is pulled. The connecting rod 407 causes the two actuating rods 406 to slide in the straight groove 207, and moves the fixing ring 405, which then slides in the mounting groove 206. This moves the positioning post 404, compressing the second spring 403 and causing it to move away from the positioning hole 402. At this point, the fixing frame 4 can be released from its limit, allowing for quick disassembly of the filter plate 401 for cleaning or replacement. Once the limit on the fixing frame 4 is released... When the first spring 204 drives the slider 202 to reset, the slider 202 slides on the outer wall of the guide rod 203, and then drives the abutment 201 to reset and move upward. At this time, the abutment 201 pushes the fixed frame 4 upward a certain distance, thus making it convenient for the staff to pick up the fixed frame 4. When it is necessary to install the cleaned or replaced filter screen 401, first align the fixed frame 4 with the through groove and then insert it. The bottom of the fixed frame 4 will press against the chamfer at one end of the two positioning posts 404, and then press the positioning posts 404 into the installation groove 206. When the positioning posts 404 are aligned with the positioning holes 402, the second spring 403 will reset the positioning posts 404 and then insert them into the positioning holes 402 to limit the fixed frame 4. During the downward movement of the fixed frame 4, the limiting holes on both sides of the bottom of the fixed frame 4 are aligned with the limiting posts, thus realizing the downward movement of the fixed frame 4. The operation is simple, convenient and practical.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ventilation arrangement for a fire protection work in the ground, comprising a ventilation shaft (1), characterized in that The inside top of the air well (1) is provided with a cross passage (101), a first pipeline (3) is connected at the center of the cross passage (101), the other end of the first pipeline (3) is connected with a communicating second pipeline (2), the air well (1) and the second pipeline (2) are arranged in an L shape, the inside of the second pipeline (2) is provided with a fixed frame (4), the top of the one end of the second pipeline (2) is provided with a through slot matched with the fixed frame (4), and the inner wall of the through slot is provided with a limiting mechanism for limiting the fixed frame (4) at one end. The limiting mechanism comprises two symmetrical mounting grooves (206) opened at one end of the through slot, a positioning column (404) is slidably arranged in the inside of each mounting groove (206), a fixed ring (405) matched with the mounting groove (206) is fixed to the outer wall of one end of the positioning column (404) close to the fixed frame (4), the top of the one end of the positioning column (404) close to the fixed frame (4) is in an oblique angle shape, two positioning holes (402) matched with the positioning column (404) are opened at the outer wall of one end of the fixed frame (4) close to the positioning column (404), and a filter screen (401) is arranged on the inner wall of the fixed frame (4), and a sealing ring is arranged on the outer wall of the fixed frame (4).

2. An underground fire engineering ventilation apparatus as defined in claim 1, wherein, A straight groove (207) communicating with the inside of the mounting groove (206) is opened at the top of the mounting groove (206), a pushing rod (406) is fixed to the top of the outer wall of each fixed ring (405), and the same connecting rod (407) is fixed to the one end of the pushing rod (406) penetrating through the straight groove (207).

3. An underground fire fighting tunnel ventilation apparatus according to claim 1, wherein, The other end of the second spring (403) is fixedly connected with the inner wall of one end of the mounting groove (206).

4. The underground fire fighting tunnel ventilation apparatus of claim 1, wherein, A guide groove (205) is opened at each side of the through slot, the same guide rod (203) is fixedly arranged at the top and the bottom of the inside of the guide groove (205), a matched sliding block (202) is slidably arranged on the outer wall of the guide rod (203), the same stop plate (201) is fixed to one side of each sliding block (202) close to each other, the stop plate (201) is matched with the inner diameter of the through slot, limit columns are fixed to the top of each side of the stop plate (201), limit holes are opened at the bottom of the fixed frame (4), and the limit columns are matched with the limit holes.

5. An underground fire fighting engineering ventilation apparatus according to claim 4, characterised in that, The other end of the first spring (204) is fixed to the top of the inner wall of the guide groove (205), and the first spring (204) is located on the outer surface of the guide rod (203), a receiving groove for receiving the stop plate (201) is opened at the bottom of the inner wall of the second pipeline (2), and a ventilation mechanism is arranged at the top of the inside of the first pipeline (3).

6. An underground fire fighting engineering ventilation apparatus according to claim 5, characterised in that, The ventilation mechanism comprises an installation plate (301) fixed to the top of the inner wall of the first pipeline (3), a fan (302) is arranged at the bottom of the installation plate (301), a driving motor (303) is arranged at the top of the installation plate (301), and the output shaft of the driving motor (303) is fixedly connected with the rotating shaft of the fan (302).

7. The underground fire fighting engineering ventilation apparatus according to claim 1, characterized in that, The outer wall of one end of the air shaft (1) is provided with an inspection door (102) at the bottom.

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