Low-pressure explosion venting structure of elevator

Abstract

The utility model relates to the technical field of low-pressure explosion venting of hoists, and discloses a low-pressure explosion venting structure of a hoister, which comprises a shell and a mounting seat, the mounting seat is fixedly arranged on the hoister, an inner cavity is arranged in the shell, a flame extinguishing module is detachably arranged in the shell and close to the upper end of the shell, and the flame extinguishing module is connected with the mounting seat. A dismounting mechanism is arranged at the upper end of the shell, a connecting shaft is fixedly arranged in the shell and close to one side of the lower end of the shell, connecting handles are arranged on the two sides of the connecting shaft in a sleeving mode, an explosion venting piece is rotatably arranged in the shell and close to the lower end of the shell, a fixing mechanism is arranged at the lower end of the shell, and the dismounting mechanism comprises a fixing plate. The number of the fixing plates is four. According to the flameless explosion venting device, the flame extinguishing module can be rapidly and conveniently mounted and dismounted through the structure, the replacement time of a maintainer is shortened, meanwhile, the flameless explosion venting device has high stability, the use performance of the flameless explosion venting device is ensured, and therefore the convenience and stability of the structure are improved.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure explosion relief technology for hoists, and in particular to a low-pressure explosion relief structure for hoists. Background Technology

[0002] A hoist is a mechanical device used for vertical or inclined material conveying, widely used in industries such as manufacturing, construction, mining, and logistics. Low-pressure explosion venting structures mainly refer to flameless explosion venting devices. Their primary function is to effectively control the explosion pressure, temperature, and flame propagation through the coordinated operation of explosion venting discs and flame extinguishing modules in the event of an explosion inside the hoist, thus protecting the safety of personnel and equipment.

[0003] Upon investigation, it was found that the existing low-pressure explosion relief structure of the hoist requires the entire outer casing to be disassembled before the flame extinguishing module can be replaced. This operation increases the cumbersome disassembly process for maintenance personnel and increases maintenance time. In addition, the flameless explosion relief device will be affected by the impact of an explosion after installation, and simple fixation around the perimeter is insufficient to ensure the stability of the structure.

[0004] Therefore, those skilled in the art have provided a low-pressure explosion relief structure for a hoist to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a low-pressure explosion relief structure for a hoist. This structure allows for quick and convenient installation and disassembly of the flame extinguishing module, reducing replacement time for maintenance personnel. It also possesses strong stability to ensure the performance of the flameless explosion relief device, thereby improving the convenience and stability of the structure.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A low-pressure explosion relief structure for a hoist includes a housing and a mounting base. The mounting base is fixedly mounted on the hoist. The housing has an inner cavity. A flame extinguishing module is detachably mounted inside the housing near its upper end. A disassembly and assembly mechanism is provided at the upper end of the housing. A connecting shaft is fixedly mounted inside the housing near its lower end. Connecting handles are sleeved on both sides of the connecting shaft. An explosion relief disc is rotatably mounted inside the housing near its lower end. A fixing mechanism is provided at the lower end of the housing.

[0008] The disassembly and assembly mechanism includes four fixing plates, which are equidistantly fixed on the upper end of the outer shell. Slider blocks are fixed on both sides of the flame extinguishing module. First screw holes are opened on both sides of the four fixing plates and the upper end of the outer shell. Multiple second screw holes are opened on both sides of the upper end of the two sliders.

[0009] The above technical solution allows for the rapid replacement of the flame extinguishing module via a disassembly and assembly mechanism, reducing the replacement time for maintenance personnel. By loosening or tightening the fixing bolts, the flame extinguishing module can be pulled out or slid in by the sliding action of the slider inside the slide groove, thus enabling rapid disassembly and installation without disassembling the outer casing, thereby improving the efficiency of replacement and enhancing the convenience of the structure's replacement.

[0010] Furthermore, the fixing mechanism includes a fixing block and a connecting block. The fixing block is fixedly disposed at the lower end of the connecting block, and the connecting block is fixedly disposed at the lower end of the outer shell. A locking block is fixedly disposed at the upper end of the mounting base. Studs are fixedly disposed at the four corners of the upper end of the mounting base. Mounting holes are opened at the four corners of the upper end of the fixing block. The upper ends of the four studs pass through the corresponding mounting holes and are threaded with three nuts.

[0011] Through the above technical solution, the installation between the outer shell and the hoist can be made more stable by the fixing mechanism, so as to ensure the stability of the flameless explosion relief device during use. By inserting the locking block into the locking slot, the positioning pin can be inserted into the positioning hole. The stud passes through the mounting hole and at the same time, the fixing block and the mounting base are overlapped, thereby positioning the outer shell. Subsequently, multiple nuts can be used to strengthen the stability of the outer shell installation, thereby improving the stability of the structure.

[0012] Furthermore, both connecting handles are fixedly mounted on the rear end of the explosion relief disc, and torsion springs are sleeved on the connecting shaft and on the side of the corresponding connecting handle.

[0013] Through the above technical solution, the connecting handle and torsion spring can be used to open the explosion relief disc when the internal pressure of the hoist reaches a certain threshold, thereby releasing the internal pressure.

[0014] Furthermore, the flame extinguishing module is composed of fine stainless steel mesh.

[0015] The above technical solution uses stainless steel wire mesh to capture and extinguish the flames generated by the explosion, preventing the flames from spreading to the surrounding environment. At the same time, it captures burning and unburned dust to prevent secondary explosions.

[0016] Furthermore, the outer shell has grooves on both sides near its upper end, and the two sliders slide in the corresponding grooves respectively;

[0017] Using the above technical solution, the flame extinguishing module can be quickly and conveniently installed and disassembled by sliding the sliders inside the corresponding slots.

[0018] Furthermore, each of the four fixing plates has a fixing bolt threaded onto its upper end and located at the corresponding first screw hole, and the fixing bolts pass through the corresponding second screw holes and are threaded to the upper end of the outer shell.

[0019] By using the above technical solution, the flame extinguishing module can be fixed inside the housing by passing through the corresponding second screw holes and threading them to the upper end of the housing with fixing bolts, thus preventing the flame extinguishing module from falling off during use.

[0020] Furthermore, the fixing block, connecting block, mounting base, and locking block are all provided with openings, and the outer shell and the hoist are interconnected through the openings;

[0021] Through the above technical solution, the explosion flame inside the hoist can be smoothly transmitted to the inside of the outer shell by means of the communication between the outer shell and the hoist through the port, so as to carry out the explosion venting operation.

[0022] Furthermore, the lower end of the fixing block is provided with a slot, and the card block is inserted into the slot. The lower end of the connecting block is provided with multiple positioning holes at equal intervals. The upper end of the card block is provided with multiple positioning posts at equal intervals, and the multiple positioning posts are respectively inserted into the corresponding positioning holes.

[0023] Through the above technical solution, the mounting base and the fixing block can overlap each other while providing complementary support, thereby enhancing the stability after installation.

[0024] This utility model has the following beneficial effects:

[0025] 1. This utility model proposes a low-pressure explosion relief structure for a hoist. This structure allows for the rapid replacement of the flame extinguishing module through a disassembly and assembly mechanism, reducing the replacement time for maintenance personnel. By loosening or tightening the fixing bolts, the flame extinguishing module can be pulled out or slid in by the sliding action of the slider inside the slide groove, thereby enabling rapid disassembly and installation without disassembling the outer shell, thus improving the efficiency of replacement and enhancing the convenience of the structure's replacement.

[0026] 2. The present invention proposes a low-pressure explosion relief structure for a hoist. This structure, through a fixing mechanism, makes the installation between the outer shell and the hoist more stable, thereby ensuring the stability of the flameless explosion relief device during use. By inserting the locking block into the locking slot, the positioning pin can be inserted into the positioning hole. As the stud passes through the mounting hole, the fixing block and the mounting base overlap, thereby positioning the outer shell. Subsequently, multiple nuts can be used to strengthen the stability of the outer shell installation, thereby improving the stability of the structure.

[0027] 3. The present invention proposes a low-pressure explosion relief structure for a hoist, which allows for quick and convenient installation and disassembly of the flame extinguishing module, reducing the replacement time for maintenance personnel. At the same time, it has strong stability to ensure the performance of the flameless explosion relief device, thereby improving the convenience and stability of the structure. Attached Figure Description

[0028] Figure 1 This is a perspective view of a low-pressure explosion relief structure for a hoist proposed in this utility model;

[0029] Figure 2 This is another perspective view of a low-pressure explosion relief structure for a hoist proposed in this utility model;

[0030] Figure 3 This is a schematic diagram of the flame extinguishing module structure of a low-pressure explosion relief structure for a hoist proposed in this utility model;

[0031] Figure 4 This is a schematic diagram of the outer shell structure of a low-pressure explosion relief structure for a hoist proposed in this utility model;

[0032] Figure 5 This is a schematic diagram of the fixing mechanism of a low-pressure explosion relief structure for a hoist proposed in this utility model;

[0033] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0034] Legend:

[0035] 1. Outer shell; 2. Mounting base; 3. Flame extinguishing module; 4. Disassembly and assembly mechanism; 401. Fixing plate; 402. Slider; 403. Slide groove; 404. First screw hole; 405. Second screw hole; 406. Fixing bolt; 5. Inner cavity; 6. Connecting shaft; 7. Connecting handle; 8. Explosion relief disc; 9. Torsion spring; 10. Fixing mechanism; 1001. Fixing block; 1002. Connecting block; 1003. Locking block; 1004. Locking groove; 1005. Positioning hole; 1006. Positioning post; 1007. Screw; 1008. Mounting hole; 1009. Nut; 11. Through port. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Reference Figure 1-34 and 6, a specific embodiment of this utility model is provided: a low-pressure explosion relief structure for a hoist, including a shell 1 and a mounting base 2. The mounting base 2 is fixedly installed on the hoist. The shell 1 has an inner cavity 5. A flame extinguishing module 3 is detachably installed inside the shell 1 near its upper end. A disassembly and assembly mechanism 4 is provided at the upper end of the shell 1. A connecting shaft 6 is fixedly installed inside the shell 1 near its lower end. Connecting handles 7 are sleeved on both sides of the connecting shaft 6. An explosion relief plate 8 is rotatably installed inside the shell 1 near its lower end. A fixing mechanism 10 is provided at the lower end of the shell 1. Two connecting handles 7 are fixedly installed at the rear end of the explosion relief plate 8. Torsion springs 9 are sleeved on the connecting shaft 6 and on the corresponding connecting handle 7. When the internal pressure of the hoist reaches a certain threshold, the explosion relief plate 8 rotates and opens to release the internal pressure. The flame extinguishing module 3 is composed of fine stainless steel mesh. The stainless steel mesh can capture and extinguish the flame generated by the explosion, prevent the flame from spreading to the surrounding environment, and capture burning and unburned dust to prevent secondary explosion.

[0038] The disassembly and assembly mechanism 4 includes four fixing plates 401, which are equidistantly fixed to the upper end of the outer casing 1. Slider blocks 402 are fixedly mounted on both sides of the flame extinguishing module 3. First screw holes 404 are provided on both sides of the upper end of the four fixing plates 401 and the outer casing 1. Multiple second screw holes 405 are equidistantly provided on both sides of the upper end of the two sliders 402. The disassembly and assembly mechanism 4 allows for quick replacement of the flame extinguishing module 3, reducing replacement time for maintenance personnel. By loosening or tightening the fixing bolts 406, the flame extinguishing module 3 can be pulled out or slid in by the sliding action of the sliders 402 within the sliding grooves 403, thus enabling quick disassembly and installation without disassembling the outer casing 1, thereby improving replacement efficiency. To improve the ease of replacement of the structure, the outer shell 1 has grooves 403 on both sides of its upper end. Two sliders 402 slide in the corresponding grooves 403. By sliding the sliders 402 in the corresponding grooves 403, the flame extinguishing module 3 can be installed and removed quickly and easily. The upper end of the four fixing plates 401 is threaded with fixing bolts 406 at the corresponding first screw holes 404. Multiple fixing bolts 406 pass through the corresponding second screw holes 405 and are threaded to the upper end of the outer shell 1. By fixing bolts 406 passing through the corresponding second screw holes 405 and being threaded to the upper end of the outer shell 1, the flame extinguishing module 3 can be fixed inside the outer shell 1, preventing the flame extinguishing module 3 from falling off during use.

[0039] Reference Figure 1 , 25. The fixing mechanism 10 includes a fixing block 1001 and a connecting block 1002. The fixing block 1001 is fixedly installed at the lower end of the connecting block 1002, and the connecting block 1002 is fixedly installed at the lower end of the outer shell 1. A locking block 1003 is fixedly installed at the upper end of the mounting base 2. Studs 1007 are fixedly installed at the four corners of the upper end of the mounting base 2. Mounting holes 1008 are opened at the four corners of the upper end of the fixing block 1001. The upper ends of the four studs 1007 pass through the corresponding mounting holes 1008 and are threaded with three nuts 1009. The fixing mechanism 10 makes the installation between the outer shell 1 and the hoist more stable, ensuring the stability of the flameless explosion relief device during use. When the locking block 1003 is engaged in the slot 1004, the positioning pin 1006 can be engaged in the positioning hole 1005. When the studs 1007 pass through the mounting holes 1008, the fixing block 1001 and the mounting base 2 overlap, thereby positioning the outer shell 1. Then, multiple nuts 1009 are used. 009 can enhance the stability of the outer shell 1, thereby improving the stability of the structure. The fixing block 1001, connecting block 1002, mounting base 2 and locking block 1003 are all provided with through openings 11. The outer shell 1 and the hoist are interconnected through the through openings 11. Through the through openings 11, the explosion flame inside the hoist can be smoothly transmitted to the interior of the outer shell 1, thereby venting the explosion. The lower end of the fixing block 1001 is provided with a locking groove 1004, and the locking block 1003 is locked into the locking groove 1004. The lower end of the connecting block 1002 is provided with multiple positioning holes 1005 at equal intervals. The upper end of the locking block 1003 is provided with multiple positioning posts 1006 at equal intervals. The multiple positioning posts 1006 are respectively locked into the corresponding positioning holes 1005. Through the locking block 1003 and the positioning posts 1006, the mounting base 2 and the fixing block 1001 can overlap each other and have a complementary supporting force, thereby enhancing the stability after installation.

[0040] Working principle: When using the low-pressure explosion relief structure of this hoist, firstly, the locking block 1003 is inserted into the locking groove 1004, allowing the positioning pin 1006 to be inserted into the positioning hole 1005. Simultaneously, the stud 1007 passes through the mounting hole 1008, causing the fixing block 1001 to overlap with the mounting base 2, thereby positioning the outer shell 1. Then, multiple nuts 1009 are used to strengthen the stability of the outer shell 1 installation, thus fixing the outer shell 1 on the hoist to ensure the stability of the flameless explosion relief device during use. Then, by loosening or tightening the fixing bolt 406, the flame extinguishing module 3 can be pulled out or slid in by the sliding action of the slider 402 inside the sliding groove 403, thereby allowing for quick disassembly and installation, avoiding the need to disassemble the outer shell 1, improving its replacement efficiency, reducing the replacement time for maintenance personnel, and thus improving the convenience and stability of the structure.

[0041] 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 specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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 low-pressure explosion relief structure for a hoist, comprising a housing (1) and a mounting base (2), characterized in that: The mounting base (2) is fixedly installed on the hoist. The outer shell (1) has an inner cavity (5). A flame extinguishing module (3) is detachably installed inside the outer shell (1) near its upper end. A disassembly and assembly mechanism (4) is installed at the upper end of the outer shell (1). A connecting shaft (6) is fixedly installed inside the outer shell (1) near its lower end. Connecting handles (7) are sleeved on both sides of the connecting shaft (6). A venting disc (8) is rotatably installed inside the outer shell (1) near its lower end. A fixing mechanism (10) is installed at the lower end of the outer shell (1). The disassembly and assembly mechanism (4) includes a fixing plate (401), and there are four fixing plates (401). The four fixing plates (401) are fixedly arranged at equal intervals on the upper end of the outer shell (1). The flame extinguishing module (3) is fixedly provided with sliders (402) on both sides. The four fixing plates (401) and the upper ends of the outer shell (1) are provided with first screw holes (404). The upper ends of the two sliders (402) are provided with multiple second screw holes (405) at equal intervals on both sides.

2. The low-pressure explosion relief structure for a hoist according to claim 1, characterized in that: The fixing mechanism (10) includes a fixing block (1001) and a connecting block (1002). The fixing block (1001) is fixedly disposed at the lower end of the connecting block (1002). The connecting block (1002) is fixedly disposed at the lower end of the outer shell (1). A locking block (1003) is fixedly disposed at the upper end of the mounting base (2). Studs (1007) are fixedly disposed at the four corners of the upper end of the mounting base (2). Mounting holes (1008) are opened at the four corners of the upper end of the fixing block (1001). The upper ends of the four studs (1007) are all penetrated through the corresponding mounting holes (1008) and three nuts (1009) are threadedly fitted on them.

3. The low-pressure explosion relief structure for a hoist according to claim 1, characterized in that: Both connecting handles (7) are fixedly mounted on the rear end of the explosion relief disc (8), and torsion springs (9) are sleeved on the connecting shaft (6) and on one side of the corresponding connecting handle (7).

4. The low-pressure explosion relief structure for a hoist according to claim 1, characterized in that: The flame extinguishing module (3) is composed of fine stainless steel mesh.

5. The low-pressure explosion relief structure for a hoist according to claim 1, characterized in that: The outer shell (1) has grooves (403) on both sides of its upper end, and the two sliders (402) slide in the corresponding grooves (403).

6. The low-pressure explosion relief structure for a hoist according to claim 1, characterized in that: Each of the four fixing plates (401) has a fixing bolt (406) threaded on its upper end and located at the corresponding first screw hole (404). The fixing bolts (406) pass through the corresponding second screw hole (405) and are threaded to the upper end of the outer shell (1).

7. The low-pressure explosion relief structure for a hoist according to claim 2, characterized in that: The fixing block (1001), connecting block (1002), mounting base (2) and locking block (1003) are all provided with openings (11), and the outer shell (1) and the hoist are interconnected through the openings (11).

8. The low-pressure explosion relief structure for a hoist according to claim 2, characterized in that: The lower end of the fixing block (1001) is provided with a slot (1004), and the locking block (1003) is inserted into the slot (1004). The lower end of the connecting block (1002) is provided with multiple positioning holes (1005) at equal intervals. The upper end of the locking block (1003) is provided with multiple positioning posts (1006) at equal intervals, and the multiple positioning posts (1006) are respectively inserted into the corresponding positioning holes (1005).

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