Totally isolated sampling fan

Abstract

This utility model relates to the field of environmental monitoring and control, and discloses a fully isolated sampling fan, including a body. An air inlet pipe is fixedly connected to the outer wall of the body. A connecting pipe is fixedly connected to the top of the air inlet pipe, and a sealing cap is inserted into the top of the connecting pipe. A fixing plate is fixedly connected to the outer wall of the air inlet pipe, and a cover plate is hinged to the inner wall of the fixing plate. A movable plate is slidably connected to the inner wall of the fixing plate, and a filter screen is inserted into the inner wall of the movable plate. A baffle is fixedly connected to the inner wall of the air inlet pipe. In this utility model, the movable plate and pull rod are designed to work together to achieve rapid filter screen replacement without stopping the equipment. Simple operation of the pull rod and movable plate allows two sets of filters to alternate within the air inlet pipe. Simultaneously, the baffle automatically limits the movement, ensuring safety during the replacement process and greatly improving equipment operating efficiency, reducing time lost due to downtime maintenance.

Description

Technical Field

[0001] This utility model relates to the field of environmental monitoring and governance, and in particular to a fully isolated sampling fan. Background Technology

[0002] A fully isolated sampling fan is a device used for sampling. Its core feature is its fully isolated structure, which means that during the sampling process, it can completely isolate the sampling area from the external environment, preventing external pollutants from interfering with the sample and ensuring the accuracy and purity of the sample.

[0003] When replacing the filter, the operator first needs to disconnect the power to the equipment, disassemble the fan casing, then remove the old filter and clean the installation slot. Next, install the new filter in the correct direction to ensure that the model is compatible. Finally, replace the casing and power on to test and check whether the installation is secure.

[0004] The existing technology has the following drawbacks: When replacing the filter screen of a traditional fully isolated sampling fan, it is often necessary to stop the operation of the equipment, which not only consumes a lot of time, but may also affect the production progress or the continuity of monitoring data due to frequent shutdowns. In addition, the disassembly and installation of the sealing cover is complicated and often requires additional tools, which not only increases the difficulty of operation, but may also lead to poor sealing due to improper installation, thereby affecting the safety and stability of the equipment. Therefore, a fully isolated sampling fan is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fully isolated sampling fan, which aims to improve the problem of reduced work efficiency caused by downtime for filter replacement in the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fully isolated sampling fan, comprising a body, an air inlet pipe fixedly connected to the outer wall of the body, a connecting pipe fixedly connected to the top end of the air inlet pipe, a sealing cap inserted into the top end of the connecting pipe, a fixing plate fixedly connected to the outer wall of the air inlet pipe, a cover plate hinged to the inner wall of the fixing plate, a movable plate slidably connected to the inner wall of the fixing plate, a filter screen inserted into the inner wall of the movable plate, a baffle fixedly connected to the inner wall of the air inlet pipe, a limit mechanism provided on the inner wall of the fixing plate, and a disassembly assembly provided on the inner wall of the sealing cap;

[0007] The limiting mechanism includes a pull rod that passes through and is slidably connected to the inner wall of the fixed plate. The inner side wall of the pull rod is elastically connected to the fixed plate by a movable spring.

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

[0009] The disassembly assembly includes a locking block that extends through and is slidably connected to the inner wall of the sealing cover. The left side wall of the locking block is elastically connected to the sealing cover via a movable spring.

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

[0011] The outer wall of the baffle is in contact with the outer wall of the filter screen.

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

[0013] The pull rod is inserted into the inner wall of the moving plate, and the connecting pipe is fixedly connected to the outer wall of the machine body through a pipeline.

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

[0015] The movable plate is slidably connected to the inner wall of the air inlet pipe, and the air inlet pipe has an opening with the same shape as the movable plate inside.

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

[0017] The movable plate has two sets of rectangular slots inside.

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

[0019] The outer side of the card block is provided with a sloping protrusion.

[0020] As a further description of the above technical solution:

[0021] The locking block is engaged with the inner wall of the connecting pipe.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the filter screen can be quickly replaced without stopping the equipment. By simply operating the pull rod and the moving plate, the two sets of filter screens can be alternated in the air inlet pipe. At the same time, the baffle automatically limits the position, which not only ensures the safety of the replacement process, but also greatly improves the operating efficiency of the equipment and reduces the time loss caused by downtime maintenance.

[0024] 2. In this utility model, the linkage structure of the locking block and the movable spring makes the disassembly and installation of the sealing cover simple and convenient. Under the action of the movable spring, the locking block can automatically engage and disengage with the connecting pipe without the need for additional tools, reducing the difficulty of operation. Moreover, the sealing performance is good after installation, effectively ensuring the stability and safety of the equipment during use. Attached Figure Description

[0025] Figure 1This is a schematic diagram showing the overall structure of a fully isolated sampling fan proposed in this utility model;

[0026] Figure 2 This is a detailed anatomical view of the air inlet pipe and fixing plate of a fully isolated sampling fan proposed in this utility model;

[0027] Figure 3 This is an exploded view of the fixed plate and the movable plate of a fully isolated sampling fan proposed in this utility model;

[0028] Figure 4 This utility model proposes a fully isolated sampling fan. Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a schematic diagram showing the air inlet pipe of a fully isolated sampling fan proposed in this utility model;

[0030] Figure 6 This is a detailed anatomical view of the sealing cover and connecting pipe of a fully isolated sampling fan proposed in this utility model;

[0031] Figure 7 This utility model proposes a fully isolated sampling fan. Figure 6 Enlarged diagram of point B in the middle.

[0032] Legend:

[0033] 1. Body; 2. Air inlet pipe; 3. Connecting pipe; 4. Sealing cover; 5. Locking block; 6. Movable spring; 7. Fixed plate; 8. Moving plate; 9. Filter screen; 10. Cover plate; 11. Pull rod; 12. Moving spring; 13. Baffle. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1-3This utility model provides an embodiment of a fully isolated sampling fan, comprising a body 1, an air inlet pipe 2 fixedly connected to the outer wall of the body 1, the air inlet pipe 2 being connected to an external pipeline and serving as an air inlet for harmful gases, a connecting pipe 3 fixedly connected to the top end of the air inlet pipe 2, a sealing cap 4 inserted into the top end of the connecting pipe 3, the contact surface between the sealing cap 4 and the connecting pipe 3 being made of rubber, ensuring a seal when the sealing cap 4 and the connecting pipe 3 are inserted, a fixing plate 7 fixedly connected to the outer wall of the air inlet pipe 2, a cover plate 10 hinged to the inner wall of the fixing plate 7, the cover plate 10 being closed using existing technology, the upper part of the fixing plate 7 being in a sealed state when the cover plate 10 is closed, a movable plate 8 being slidably connected to the inner wall of the fixing plate 7, and a corresponding opening on the fixing plate 7. The corresponding slots allow the movable plate 8 to move vertically. A filter screen 9 is inserted into the inner wall of the movable plate 8. The filter screen 9 filters and adsorbs impurities and particulate matter in harmful gases. A baffle 13 is fixedly connected to the inner wall of the air inlet pipe 2. A limiting mechanism is provided on the inner wall of the fixed plate 7. A disassembly assembly is provided on the inner wall of the sealing cover 4. The limiting mechanism includes a pull rod 11. The pull rod 11 passes through and is slidably connected to the inner wall of the fixed plate 7. A slot corresponding to the pull rod 11 is opened on the fixed plate 7, allowing the pull rod 11 to move back and forth. The inner side wall of the pull rod 11 is elastically connected to the fixed plate 7 through a moving spring 12. When the pull rod 11 moves forward, the moving spring 12 is stretched. When resetting, the elastic force of the moving spring 12 is used to reset the pull rod 11.

[0036] Reference Figure 1 , Figure 6 and Figure 7 The disassembly assembly includes a locking block 5, which is slidably connected to the inner wall of the sealing cover 4. The sealing cover 4 has a slot corresponding to the locking block 5, allowing the locking block 5 to move left and right. The left side wall of the locking block 5 is elastically connected to the sealing cover 4 via a movable spring 6. When the locking block 5 moves to the left, the movable spring 6 is compressed. When resetting, the elastic force of the movable spring 6 is used to reset the locking block 5. The outer side of the locking block 5 is provided with a sloping protrusion. When the top of the connecting tube 3 presses against the sloping protrusion, the locking block 5 moves to the left and engages with the inner wall of the connecting tube 3. The connecting tube 3 has a slot corresponding to the locking block 5.

[0037] Reference Figures 3-5 The outer wall of the baffle 13 contacts the outer wall of the filter screen 9, and the baffle 13 acts as a shield and limiter for the filter screen 9. The pull rod 11 is inserted into the inner wall of the movable plate 8. The movable plate 8 has two sets of slots corresponding to the pull rod 11. The connecting pipe 3 is fixedly connected to the outer wall of the body 1 through the pipe. The movable plate 8 is slidably connected to the inner wall of the air inlet pipe 2. The air inlet pipe 2 has slots corresponding to the movable plate 8, so that the movable plate 8 can move vertically. When in use, the movable plate 8 is in a sealed state with the air inlet pipe 2. The inside of the air inlet pipe 2 has an opening with the same shape as the movable plate 8. The inside of the movable plate 8 has two sets of rectangular slots.

[0038] Working principle: When the filter screen 9 needs to be replaced, manually open the cover plate 10, then insert the second set of filter screen 9 into the second rectangular slot on the moving plate 8. Then manually move the pull rod 11 forward. The pull rod 11 will stretch the moving spring 12. When the pull rod 11 separates from the slot on the moving plate 8, manually move the moving plate 8 downward. The moving plate 8 will move the two sets of filter screens 9 downward. When the second set of filter screens 9 enters the air inlet pipe 2, the first set of filter screens 9 leaves the air inlet pipe 2. At the same time, the baffle 13 blocks and limits the second set of filter screens 9 and releases the limit on the first set of filter screens 9. At this time, the pull rod 11 coincides with the second slot on the moving plate 8. Manually release the pull rod 11, and use the elasticity of the moving spring 12 to pull the pull rod 11 into the slot of the moving plate 8 to complete the limit on the moving plate 8. Then the staff can close the cover plate 10 and remove the first set of filter screens 9 for cleaning and maintenance.

[0039] When the sealing cap 4 needs to be removed, manually move the locking block 5 to the left. The locking block 5 will compress the movable spring 6. When the locking block 5 separates from the groove on the connecting pipe 3, manually remove the sealing cap 4. Then manually release the locking block 5, using the elastic force of the movable spring 6 to move the locking block 5 back to its initial position. When the sealing cap 4 needs to be installed, manually insert the sealing cap 4 into the groove of the connecting pipe 3. When the top of the connecting pipe 3 contacts and compresses the locking block 5, move the locking block 5 to the left. When the sealing cap 4 is inserted as shown... Figure 1 In the indicated state, the locking block 5 coincides with the groove of the connecting pipe 3. Under the elastic force of the movable spring 6, the locking block 5 is engaged into the groove of the connecting pipe 3, thus limiting the sealing cover 4.

[0040] 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 fully isolated sampling fan, comprising a body (1), characterized in that: An air inlet pipe (2) is fixedly connected to the outer wall of the body (1). A connecting pipe (3) is fixedly connected to the top of the air inlet pipe (2). A sealing cover (4) is inserted into the top of the connecting pipe (3). A fixing plate (7) is fixedly connected to the outer wall of the air inlet pipe (2). A cover plate (10) is hinged to the inner wall of the fixing plate (7). A moving plate (8) is slidably connected to the inner wall of the fixing plate (7). A filter screen (9) is inserted into the inner wall of the moving plate (8). A baffle (13) is fixedly connected to the inner wall of the air inlet pipe (2). A limit mechanism is provided on the inner wall of the fixing plate (7). A disassembly assembly is provided on the inner wall of the sealing cover (4). The limiting mechanism includes a pull rod (11), which is slidably connected to the inner wall of the fixed plate (7). The inner side wall of the pull rod (11) is elastically connected to the fixed plate (7) by a moving spring (12).

2. The fully isolated sampling fan according to claim 1, characterized in that: The disassembly assembly includes a locking block (5) which is slidably connected to the inner wall of the sealing cover (4). The left side wall of the locking block (5) is elastically connected to the sealing cover (4) by a movable spring (6).

3. The fully isolated sampling fan according to claim 1, characterized in that: The outer wall of the baffle (13) is in contact with the outer wall of the filter screen (9).

4. The fully isolated sampling fan according to claim 1, characterized in that: The pull rod (11) is inserted into the inner wall of the moving plate (8), and the connecting pipe (3) is fixedly connected to the outer wall of the body (1) through the pipe.

5. The fully isolated sampling fan according to claim 1, characterized in that: The movable plate (8) is slidably connected to the inner wall of the air inlet pipe (2), and the air inlet pipe (2) has an opening with the same shape as the movable plate (8) inside.

6. The fully isolated sampling fan according to claim 1, characterized in that: The movable plate (8) has two sets of rectangular slots inside.

7. The fully isolated sampling fan according to claim 2, characterized in that: The outer side of the card block (5) is provided with a sloping protrusion.

8. The fully isolated sampling fan according to claim 2, characterized in that: The card block (5) is engaged with the inner wall of the connecting pipe (3).

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