A choke fan with a protection device

Abstract

This utility model relates to the field of valve closets, and more particularly to a valve closet with a protective device. The valve closet body has valve flanges fixedly installed on both sides, and both ends of the valve closet flanges are fixedly connected to pipe flanges on the connecting pipe by bolts. A fixing cover is fixedly installed on the top of each valve closet flange, and a limiting cavity is formed at the bottom of each fixing cover. The limiting cavity is adapted to the pipe flange, and a locking plate for locking the bolts is vertically movable on each fixing cover. In this utility model, by setting a fixing cover and a vertically movable locking plate on the top of the valve closet flange, combined with the continuous downward pressure provided by a spring, the three top bolts can be constantly locked. This effectively prevents them from loosening due to vibration, improves connection stability, and achieves connection protection for the valve closet body.

Description

Technical Field

[0001] The utility model relates to the technical field of air lock valves, in particular to an air lock valve with a protection device. Background Art

[0002] An air lock valve is a device for quantitative discharging and air locking widely used in pneumatic conveying systems and dust removal systems. Its core function is to continuously discharge powdery and granular materials while effectively blocking the air flow of the upper and lower pressure differences, preventing air from flowing through, and ensuring the working efficiency of the system.

[0003] In the prior art, the air lock valve is mainly connected and installed with upstream and downstream equipment through the flanges at both ends. However, during the use of the air lock valve, both the air lock valve and the power equipment supporting the entire pneumatic conveying system will generate continuous mechanical and operating vibrations, resulting in the loosening or even failure of the flange connection bolts during the operation of the equipment. Therefore, there is an urgent need for an air lock valve with a connection protection device. Content of the Utility Model

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and to propose an air lock valve with a protection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An air lock valve with a protection device includes an air lock valve body. On both sides of the air lock valve body, air lock valve flanges are fixedly arranged, and the air lock valve flanges at both ends are fixedly connected to the pipe flanges on the connecting pipes through bolts; on the tops of the air lock valve flanges, fixed covers are fixedly arranged. At the bottoms of the fixed covers, limiting cavities are opened, and the limiting cavities are adapted to the pipe flanges. On the fixed covers, locking plates for locking the bolts are vertically movably arranged.

[0007] In addition, the preferred structure is that corresponding flange holes are adapted and opened on the air lock valve flanges and the pipe flanges for the bolts, and nuts are adapted and arranged at the ends of the bolts.

[0008] In addition, the preferred structure is that through holes are adapted and opened on the fixed covers for the bolts, and the through holes are adapted and aligned with the flange holes.

[0009] In addition, the preferred structure is that the locking plates are adapted to lock on the outer sides of the bolts, and connecting frames are fixedly arranged on the tops of the locking plates.

[0010] In addition, the preferred structure is that at both ends of the bottom of the connecting frame, guiding columns are fixedly arranged downward, and guiding cavities are adapted and opened on the fixed covers for the guiding columns.

[0011] In addition, a preferred structure is that multiple springs are mounted upward on the top of the fixing cover, and the other end of each spring is connected to the connecting frame.

[0012] The beneficial effects of this utility model are as follows: by setting a fixed cover and a vertically movable locking plate on the top of the valve flange, and combining the continuous downward pressure provided by the spring, the three bolts at the top can be locked at all times. This can effectively prevent them from loosening due to vibration, improve the connection stability, and achieve connection protection for the valve body. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a shut-off fan with a protective device proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the airlock body proposed in this utility model;

[0015] Figure 3 for Figure 2 A schematic diagram of the exploded structure at the locking plate in the middle;

[0016] Figure 4 This is a bottom view of the fixed cover structure proposed in this utility model;

[0017] Figure 5 This is a schematic diagram of the locking plate proposed in this utility model.

[0018] In the diagram: 1. Blower body, 11. Blower flange, 2. Connecting pipe, 21. Pipe flange, 3. Bolt, 31. Flange hole, 4. Fixing cover, 41. Guide cavity, 42. Through hole, 43. Limiting cavity, 5. Locking plate, 51. Connecting frame, 52. Guide column, 53. Spring. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-5 A shut-off valve with a protective device includes a shut-off valve body 1. Shut-off valve flanges 11 are fixedly installed on both sides of the shut-off valve body 1, and both ends of the shut-off valve flanges 11 are fixedly connected to pipe flanges 21 on a connecting pipe 2 by bolts 3. A fixing cover 4 is fixedly installed on the top of each shut-off valve flange 11. A limiting cavity 43 is formed at the bottom of each fixing cover 4, and the limiting cavity 43 is adapted to the pipe flange 21. A locking plate 5 for locking the bolts 3 is vertically movable on each fixing cover 4. It is worth noting that the specific internal structure and working method of the shut-off valve body 1 are existing technologies and will not be described in detail.

[0021] Among them, flange holes 31 are provided on the corresponding bolts 3 on the airlock flange 11 and the pipe flange 21, and nuts are provided on the ends of the bolts 3.

[0022] The mounting cover 4 has through holes 42 for each bolt 3, and these through holes 42 are aligned with the flange holes 31. This allows the bolts 3 to pass through the through holes 42 and be tightened, improving the tightening performance of the upper end of the pipe flange 21.

[0023] The locking plates 5 are all fitted and locked onto the outside of the bolts 3, and a connecting frame 51 is fixedly installed on the top of each locking plate 5. Guide posts 52 are fixedly installed downwards at both ends of the bottom of the connecting frame 51, and guide cavities 41 are correspondingly provided on the fixing cover 4 for each guide post 52. The fit between the guide posts 52 and the guide cavities 41 improves the stability of the connecting frame 51 and the locking plates 5 during vertical movement.

[0024] In this design, multiple springs 53 are mounted upwards on the top of the fixing cover 4, and the other end of each spring 53 is connected to the connecting bracket 51. Through the arrangement of the springs 53, and in conjunction with the weight of the locking plate 5 itself, the locking plate 5 can be stably locked to the outside of the bolt 3, preventing the upper bolt 3 from loosening. It is worth noting that the springs 53 are high-strength anti-vibration springs in the prior art, ensuring sufficient elastic preload even under extreme vibration environments. The structure of the springs 53 is common knowledge well-known to those skilled in the art and is not a major technical problem to be solved in this application; therefore, it will not be described in detail here.

[0025] In this embodiment, when the user needs to install the airlock body 1, they only need to insert the pipe flange 21 on the connecting pipe 2 into the limiting cavity 43 on the fixing cover 4. At this time, the airlock flange 11 and the pipe flange 21 are properly aligned, and the user continues to rotate and adjust to ensure that the flange holes 31 between the airlock flange 11 and the pipe flange 21 are properly aligned.

[0026] Then, all bolts 3 are inserted into the aligned flange holes 31 and tightened with nuts. In this step, the three top bolts 3 are not operated.

[0027] After the user has installed all the remaining bolts 3, simply push the locking plate 5 upwards. At this time, all springs 53 are stretched. Then, pass the bolts 3 through the through hole 42 and the flange hole 31 in sequence, and tighten them with nuts. After the bolts 3 are installed, the locking plate 5 can be released. At this time, the locking plate 5 will automatically move downwards to reset due to the elastic force of the springs 53 and its own weight. At this time, the locking plate 5 can be stably locked on the outside of the bolts 3 to prevent the three upper bolts 3 from loosening.

[0028] In this utility model, by setting a fixed cover 4 and a vertically movable locking plate 5 on the top of the valve flange 11, and combining the continuous downward pressure provided by the spring 53, the three bolts 3 at the top can be locked at all times. This can effectively prevent them from loosening due to vibration, improve the stability of the connection, and achieve connection protection for the valve body 1.

[0029] 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 shut-off fan with a protective device, comprising a shut-off fan body (1), characterized in that, Both sides of the air shut-off fan body (1) are fixedly provided with air shut-off fan flanges (11), and the air shut-off fan flanges (11) at both ends are fixedly connected to the pipe flanges (21) on the connecting pipe (2) by bolts (3). The top of each of the airlock flanges (11) is fixedly provided with a fixed cover (4), and the bottom of each fixed cover (4) is provided with a limiting cavity (43). The limiting cavity (43) is adapted to the pipe flange (21), and a locking plate (5) for locking the bolt (3) is vertically and movably provided on each fixed cover (4).

2. A shut-off fan with a protection device according to claim 1, characterized in that, The corresponding bolts (3) on the shut-off flange (11) and the pipe flange (21) are all fitted with flange holes (31), and the ends of the bolts (3) are all fitted with nuts.

3. A shut-off fan with a protective device according to claim 2, characterized in that, The fixed cover (4) has through holes (42) for each bolt (3), and the through holes (42) are aligned with the flange holes (31).

4. A shut-off fan with a protection device according to claim 1, characterized in that, The locking plates (5) are all adapted to be locked on the outside of the bolts (3), and the top of the locking plates (5) is fixedly provided with connecting brackets (51).

5. A shut-off fan with a protective device according to claim 4, characterized in that, Both ends of the bottom of the connecting frame (51) are fixedly provided with guide posts (52) downwards, and the corresponding guide posts (52) on the fixing cover (4) are adapted to have guide cavities (41).

6. A shut-off fan with a protective device according to claim 5, characterized in that, The top of the fixed cover (4) is fitted with multiple springs (53) that are mounted upwards, and the other end of each spring (53) is connected to the connecting frame (51).

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