Filtering device for toxic gas detection

Abstract

The utility model relates to the field of gas filtration, and discloses a filtering device for toxic gas detection, which comprises a shell, the upper end and the lower end of the shell are fixedly connected with mounting nozzles, the outer walls of the upper end and the lower end of the shell are provided with clamping assemblies, and the side wall of the shell is detachably provided with a mounting frame through a limiting assembly. A groove is formed in the surface of the mounting frame, a filter plate is detachably mounted on the inner wall of the groove of the mounting frame, a connecting block is hinged to the end, away from the sliding block, of the hinge rod, and an inserting rod is elastically connected to the inner wall of the connecting block through a reset spring. According to the pipeline fixing device, the insertion rod is pulled upwards, the connecting block is moved, the hinge rod is used for pushing the sliding block and the clamping base, stable fixing of a pipeline can be rapidly achieved, no special tool needs to be used, flexible adjustment can be conducted according to pipelines of different thicknesses, and fixing of the positions of the connecting block and the clamping base is guaranteed through cooperation of the insertion rod and the reset spring; and gas leakage is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of gas filtration, and in particular to a filtration device for detecting toxic gases. Background Technology

[0002] In the field of gas detection, toxic gas detection is a crucial step in ensuring environmental safety and human health. Filtering devices for toxic gas detection, as an important component of gas detection systems, can effectively remove harmful substances from toxic gases, protect the detection equipment from damage, and improve the accuracy and reliability of detection results.

[0003] A search revealed Chinese Patent Publication No. CN205569978U, which discloses a toxic gas detection filter. The filter includes a filter housing, with its outlet sealed to a gas sampling seat and its inlet sealed to a filter end seal. Several clean gas guide baffles are evenly distributed from top to bottom within the filter housing's inner cavity. An upper filter device is located at the upper end of the inner cavity, and a lower filter device is located at the lower port. An air gap exists between the lower filter device and the filter end seal. A filter core is located at the center of rotation of the filter housing, with its upper end extending from the housing and into the sampling seat, positioned within the air gap. The filter employs a spatial separation structure to prevent rainwater splashing from affecting the filter; an extended filtration path design improves the filter's filtration capacity; and the cleaning gas and the gas being detected are processed within a single filter, achieving a streamlined and efficient product design.

[0004] Although the aforementioned device achieves cleaning and detection through a filter, it is connected to both the toxic gas inlet and outlet via connectors. During connection, a special sleeve or tool is required to rotate the clamp for fixation. Without such a tool, it is impossible to stably install the pipeline connection. Therefore, a toxic gas detection filter device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a filtration device for detecting toxic gases, which aims to improve the problem in the prior art that it is impossible to stably install the connection of the pipeline without special tools.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a filtration device for detecting toxic gases, comprising a housing, wherein mounting nozzles are fixedly connected to both the upper and lower ends of the housing, clamping components are provided on the outer walls of both the upper and lower ends of the housing, and a mounting frame is detachably mounted on the side wall of the housing via a limiting component, wherein a groove is provided on the surface of the mounting frame, and a filter plate is detachably mounted on the inner wall of the groove of the mounting frame.

[0007] The clamping assembly includes a clamping seat, and two sets of clamping seats are provided. A slider is fixedly connected to the bottom end of the outer wall of each set of clamping seats. A hinge rod is hinged to the surface of the slider. A connecting block is hinged to the end of the hinge rod away from the slider. An insert rod is elastically connected to the inner wall of the connecting block through a return spring.

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

[0009] The limiting component includes a rotating block, which is elastically connected to the inner wall of the mounting frame by a spiral spring. A connecting plate is fixedly connected to the surface of the rotating block, and a connecting rod is hinged to the surface of the connecting plate. A wedge is hinged to the end of the connecting rod away from the connecting plate.

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

[0011] The upper and lower surfaces of the housing are provided with sliding grooves, and the outer wall of the bottom end of the slider is slidably connected to the inner wall of the sliding groove of the housing.

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

[0013] The bottom end of the outer wall of the connecting block is in contact with the outer wall of the housing. One end of the reset spring is fixedly connected to the surface of the insertion rod, and the other end of the connecting block is fixedly connected to the inner wall of the connecting block.

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

[0015] The insertion rod passes through and is slidably connected to the inner wall of the connecting block. Through holes are provided on both the upper and lower surfaces of the housing. The bottom end of the outer wall of the insertion rod is inserted into the inner wall of the through hole.

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

[0017] The side wall of the housing is provided with a mounting groove, and the outer wall of the mounting frame is in contact with the inner wall of the mounting groove.

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

[0019] One end of the spiral spring is fixedly connected to the surface of the rotating block, and the other end of the spiral spring is fixedly connected to the inner side wall of the mounting frame. The rotating block is rotatably connected to the inner wall of the mounting frame.

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

[0021] The wedge is slidably connected to the inner wall of the mounting frame, and the side wall of the housing mounting groove is provided with a slot, and the outer wall of the wedge is engaged with the inner wall of the slot.

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

[0023] 1. In this utility model, by pulling the insert rod upward, the connecting block is moved, and the slider and clamping seat are pushed by the hinge rod, the pipe can be quickly and stably fixed without the need for special tools. It can also be flexibly adjusted according to pipes of different thicknesses. The cooperation between the insert rod and the return spring ensures the fixed position of the connecting block and the clamping seat, effectively preventing gas leakage and providing a reliable guarantee for gas detection work.

[0024] 2. In this invention, rotating the rotating block causes the wedges to move closer together via the connecting plate and connecting rod, allowing for easy installation or removal of the mounting frame. The spiral spring ensures the rotating block automatically resets, and the wedges accurately engage in the slots, guaranteeing the stable fixation of the mounting frame. When the filter plate needs to be replaced, simply rotate the rotating block again to disengage the wedges from the slots, allowing the mounting frame to be removed. This convenient and quick filter plate replacement reduces maintenance time and costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the toxic gas detection filter device proposed in this utility model.

[0026] Figure 2 This is a partial cross-sectional view of the housing of the toxic gas detection filter device proposed in this utility model;

[0027] Figure 3 This is a partial cross-sectional view of the housing and connecting block of the toxic gas detection filter device proposed in this utility model;

[0028] Figure 4 The filtration device for detecting toxic gases proposed in this utility model Figure 3 Enlarged structural diagram of section A;

[0029] Figure 5 This is a partial cross-sectional view of the mounting frame of the toxic gas detection filter device proposed in this utility model.

[0030] Legend:

[0031] 1. Housing; 2. Mounting nozzle; 3. Clamping assembly; 31. Clamping seat; 32. Hinge rod; 33. Connecting block; 34. Slider; 35. Return spring; 36. Insert rod; 4. Mounting frame; 5. Filter plate; 6. Limiting assembly; 61. Rotating block; 62. Scroll spring; 63. Connecting plate; 64. Connecting rod; 65. Wedge block. Detailed Implementation

[0032] 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.

[0033] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a toxic gas detection filter device, comprising a housing 1, with mounting nozzles 2 fixedly connected to both the upper and lower ends of the housing 1. By providing two sets of mounting nozzles 2, toxic gas can enter the interior of the mounting nozzle 2 from the lower end, be filtered by a filter plate 5, and then be transported to the detection device from the upper mounting nozzle 2. Clamping components 3 are provided on the outer walls of both the upper and lower ends of the housing 1. A mounting frame 4 is detachably mounted on the side wall of the housing 1 via a limiting component 6. A groove is provided on the surface of the mounting frame 4, and a filter plate 5 is detachably mounted on the inner wall of the groove. By providing the filter plate 5, toxic gas can enter the interior of the housing 1, filtering the toxic components. Furthermore, the entire mounting frame 4 can be disassembled, facilitating the replacement of the filter plate 5 and preventing its filtration efficiency from decreasing over time. An installation groove is provided on the side wall of the housing 1, and the outer wall of the mounting frame 4 contacts the inner wall of the installation groove. This contact allows for the positioning and installation of the filter plate 5 by the mounting frame 4.

[0034] Reference Figure 3 and Figure 4 The clamping assembly 3 includes two sets of clamping seats 31. Each set of clamping seats 31 has a slider 34 fixedly connected to its bottom end on the outer wall. The surface of the clamping seats 31 has contact grooves, allowing them to engage the pipe when the two sets of clamping seats 31 come together and contact the outer wall of the pipe fitted onto the surface of the mounting nozzle 2, thus stabilizing the pipe without requiring a special tool to rotate the clamp for locking. The upper and lower surfaces of the housing 1 have sliding grooves, and the outer wall of the bottom end of the slider 34 is slidably connected to the inner wall of the sliding groove in the housing 1. The groove allows the two sets of sliders 34 to drive the corresponding clamping seats 31 to move relative to each other and move against the outer wall of the mounting nozzle 2 to press against the pipe sleeved on the surface of the mounting nozzle 2. The surface of the slider 34 is hinged with a hinge rod 32, and the end of the hinge rod 32 away from the slider 34 is hinged with a connecting block 33. When the connecting block 33 moves, it will push the corresponding slider 34 through the two sets of hinge rods 32 to drive the clamping seats 31 to move against the inner wall of the groove of the housing 1, so that they move closer or further apart, thereby pressing according to the connecting pipe of different thicknesses.

[0035] Reference Figure 4 The inner wall of the connecting block 33 is elastically connected to the insertion rod 36 via a return spring 35. The bottom end of the outer wall of the connecting block 33 is in contact with the outer wall of the housing 1. One end of the return spring 35 is fixedly connected to the surface of the insertion rod 36, and the other end of the connecting block 33 is fixedly connected to the inner wall of the connecting block 33. The function of the return spring 35 is to automatically reset the position of the insertion rod 36 after it is pulled upward. The insertion rod 36 passes through and is slidably connected to the inner wall of the connecting block 33. Through holes are provided on the upper and lower surfaces of the housing 1. The bottom end of the outer wall of the insertion rod 36 is inserted into the inner wall of the through hole. The insertion between the two can drive the connecting block 33 to drive the hinge rod 32 to push the slider 34 to drive the clamping seat 31 to position the pipe after it has moved according to the pipe of different thicknesses.

[0036] Reference Figure 3 and Figure 5 The limiting component 6 includes a rotating block 61, which is elastically connected to the inner wall of the mounting frame 4 via a spiral spring 62. One end of the spiral spring 62 is fixedly connected to the surface of the rotating block 61, and the other end is fixedly connected to the inner side wall of the mounting frame 4. The spiral spring 62 automatically resets the position of the rotating block 61 after rotation. The rotating block 61 is rotatably connected to the inner wall of the mounting frame 4. A connecting plate 63 is fixedly connected to the surface of the rotating block 61, and a connecting rod 64 is hinged to the surface of the connecting plate 63. A wedge 65 is hinged to the end of the connecting rod 64 away from the connecting plate 63. When the rotating block 61 rotates, it will drive the connecting plate 63 to follow it. The connecting plate 63 rotates synchronously around the center, and when the connecting plate 63 rotates, it drives the two sets of connecting rods 64 to rotate synchronously around the center, thereby pulling the corresponding wedges 65 to move closer together on the inner wall of the mounting frame 4. After the rotating block 61 is released, the rotating block 61 will be elastically acted by the spiral spring 62 to automatically reset the positions of the connecting plate 63, connecting rods 64 and wedges 65 after they have moved. The wedges 65 are slidably connected to the inner wall of the mounting frame 4. The side wall of the mounting groove of the housing 1 is provided with a slot. The outer wall of the wedges 65 is engaged with the inner wall of the slot. The engagement between the two can fix the mounting frame 4 and the filter plate 5 to the position of the inner wall of the housing 1.

[0037] Working principle: Toxic gas enters the housing 1 through the mounting nozzle 2 at the bottom. When it passes through the filter plate 5, the filter plate 5 filters out the toxic part of the gas. The filtered gas is then delivered to the detection device through the mounting nozzle 2 at the top. In this way, harmful substances in the toxic gas are effectively removed, avoiding damage to the detection device and improving the reliability of the detection results.

[0038] When connecting pipes, first pull the insert rod 36 upwards to overcome the elastic force of the return spring 35 and disengage it from the through hole on the surface of the housing 1. Then move the connecting block 33. The movement of the connecting block 33 pushes the corresponding slider 34 to slide in the groove of the housing 1 through the two sets of hinge rods 32, thereby causing the clamping seats 31 to move relative to each other. When the two sets of clamping seats 31 approach the pipe fitted onto the surface of the mounting nozzle 2, the contact groove on the surface of the clamping seat 31 contacts and engages with the outer wall of the pipe, achieving stable fixation of the pipe. There is no need to use special tools to rotate the clamp. After adjusting the position of the clamping seat 31, release the insert rod 36. The insert rod 36 automatically resets under the action of the return spring 35 and inserts into the through hole on the surface of the housing 1, fixing the position of the connecting block 33, and thus fixing the position of the clamping seat 31, ensuring that the pipe is firmly connected to the mounting nozzle 2. In this way, the position of the clamping seat 31 can be flexibly adjusted according to the connecting pipe of different thicknesses to achieve effective clamping of the pipe.

[0039] When the mounting frame 4 needs to be installed, rotate the rotating block 61. The rotating block 61 rotates against the elastic force of the spiral spring 62, causing the connecting plate 63 to rotate synchronously around the center. The rotation of the connecting plate 63 drives the corresponding wedges 65 to move closer together on the inner wall of the mounting frame 4 through the two sets of connecting rods 64. At this time, the mounting frame 4 is inserted into the mounting groove of the housing 1. When the mounting frame 4 is in place, release the rotating block 61. The rotating block 61 automatically resets under the elastic action of the spiral spring 62, causing the connecting plate 63, connecting rods 64 and wedges 65 to reset. After the wedges 65 reset, their outer wall engages with the slot on the side wall of the mounting groove of the housing 1, fixing the mounting frame 4 and the filter plate 5 in the position on the inner wall of the housing 1. When the mounting frame 4 needs to be removed, rotate the rotating block 61 again to make the wedges 65 move closer together and disengage from the slot, so that the mounting frame 4 can be removed from the mounting groove of the housing 1, making it convenient to replace or maintain the filter plate 5.

[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 filtration device for detecting toxic gases, comprising a housing (1), characterized in that: The upper and lower ends of the housing (1) are fixedly connected with mounting nozzles (2), and the outer walls of the upper and lower ends of the housing (1) are provided with clamping components (3). The side wall of the housing (1) is detachably mounted with a mounting frame (4) through a limiting component (6). The surface of the mounting frame (4) is provided with a groove, and the inner wall of the groove of the mounting frame (4) is detachably mounted with a filter plate (5). The clamping assembly (3) includes a clamping seat (31), which is provided in two sets. The bottom end of the outer wall of each clamping seat (31) is fixedly connected to a slider (34). The surface of the slider (34) is hinged to a hinge rod (32). The end of the hinge rod (32) away from the slider (34) is hinged to a connecting block (33). The inner wall of the connecting block (33) is elastically connected to a plug rod (36) through a return spring (35).

2. The filtration device for detecting toxic gases according to claim 1, characterized in that: The limiting component (6) includes a rotating block (61), which is elastically connected to the inner wall of the mounting frame (4) by a spiral spring (62). A connecting plate (63) is fixedly connected to the surface of the rotating block (61), and a connecting rod (64) is hinged to the surface of the connecting plate (63). A wedge (65) is hinged to the end of the connecting rod (64) away from the connecting plate (63).

3. The filtration device for detecting toxic gases according to claim 1, characterized in that: The upper and lower surfaces of the housing (1) are provided with grooves, and the outer wall of the bottom end of the slider (34) is slidably connected to the inner wall of the groove of the housing (1).

4. The filtration device for detecting toxic gases according to claim 1, characterized in that: The bottom end of the outer wall of the connecting block (33) is in contact with the outer wall of the housing (1), one end of the reset spring (35) is fixedly connected to the surface of the plug rod (36), and the other end of the connecting block (33) is fixedly connected to the inner wall of the connecting block (33).

5. The filtration device for detecting toxic gases according to claim 1, characterized in that: The insertion rod (36) passes through and is slidably connected to the inner wall of the connecting block (33). The upper and lower surfaces of the housing (1) are provided with through holes. The bottom end of the outer wall of the insertion rod (36) is inserted into the inner wall of the through hole.

6. The filtration device for detecting toxic gases according to claim 1, characterized in that: The side wall of the housing (1) is provided with an installation groove, and the outer wall of the mounting frame (4) is in contact with the inner wall of the installation groove.

7. The filtration device for detecting toxic gases according to claim 2, characterized in that: One end of the spiral spring (62) is fixedly connected to the surface of the rotating block (61), and the other end of the spiral spring (62) is fixedly connected to the inner side wall of the mounting frame (4). The rotating block (61) is rotatably connected to the inner wall of the mounting frame (4).

8. The filtration device for detecting toxic gases according to claim 2, characterized in that: The wedge (65) is slidably connected to the inner wall of the mounting frame (4), and the side wall of the mounting groove of the housing (1) is provided with a slot, and the outer wall of the wedge (65) is engaged with the inner wall of the slot.

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