A flue gas analyzer filter device

Abstract

The application discloses a flue gas analyzer filtering device, relates to the field of flue gas analyzers, and comprises a fixing base, a gas guide cover, a filter element, a limiting assembly and a locking assembly. The inclined surface arranged on the outer surface of the extrusion block facilitates the plug-in connection of the filter element. The plug-in cylinder, the plug-in rod and the extrusion spring jointly limit and extrude the extrusion block, drive the extrusion block to extrude the filter element, realize sealing through the sealing ring arranged on the outer surface of the plug-in cylinder, limit the filter element through the extrusion of the extrusion block, ensure that the filter element is positioned at the central position in the gas guide cover, facilitate the installation of the filter element, avoid the deviation of the filter element from the fixing base, and prevent the filter element from being unable to cooperate with the fixing base. After the plug-in connection of the gas guide cover and the fixing base is completed, the rotation of the gas guide cover drives the plug-in ring and the L-shaped clamping block to cooperate with the annular groove and the L-shaped clamping groove respectively, preliminarily locks the gas guide cover and the fixing base, drives the limiting pin to cooperate with the limiting hole in the outer surface of the L-shaped clamping block under the action of the stretching spring, and finally locks the gas guide cover and the fixing base. The device is quick to install and convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of flue gas analyzer technology, and in particular to a flue gas analyzer filtration device. Background Technology

[0002] A flue gas analyzer is an instrument used to measure and analyze the composition of flue gas produced during combustion. It is mainly used to monitor and control the flue gas emitted during industrial production, power generation, heating, and vehicle exhaust emissions to ensure that emissions meet environmental protection standards and reduce environmental pollution.

[0003] Before detecting flue gas, the flue gas analyzer needs to filter and dehumidify the flue gas through a filter device installed on the outside of the analyzer. The filter element inside the filter device filters the particulate components in the flue gas to be tested, thereby preventing the particulate components in the flue gas from damaging the detection components inside the analyzer.

[0004] The filtration device used in flue gas analyzers mainly filters particulate matter in flue gas through internal filter elements, which need to be replaced regularly. However, existing filtration devices place the filter element in an air guide hood before installing the hood onto the filtration device. But the existing air guide hood lacks multiple filter element limiting components, which makes the filter element prone to displacement and unable to properly align with the air inlet inside the filtration device, causing air leakage and affecting flue gas filtration, making it inconvenient to use. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a flue gas analyzer filtration device.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a flue gas analyzer filtration device, including a fixed base, an air guide hood is provided below the fixed base, a filter element is provided inside the air guide hood, a limiting component is provided inside the air guide hood, and a locking component is provided between the air guide hood and the fixed base;

[0009] The limiting component includes a fixing ring fixedly installed inside the air guide cover, four insert rods are inserted inside the fixing ring, a compression block is fixedly installed at one end of the insert rods near the inside of the air guide cover, and a compression spring is installed between the compression block and the fixing ring;

[0010] The locking assembly includes a mounting plate fixedly installed on the top outer surface of the air guide cover. A plug ring is installed on the top of the mounting plate, and several L-shaped locking blocks are provided on the top of the plug ring. Two limiting pins are interposed inside the fixing base, and tension springs are sleeved on the outer surface of the limiting pins.

[0011] As a preferred embodiment of the flue gas analyzer filtration device of this utility model, the top of the extrusion block is provided with an inclined surface on the side near the center of the air guide block, there are four extrusion blocks in total, and a gap area is reserved between adjacent extrusion blocks.

[0012] In a preferred embodiment of the flue gas analyzer filtration device of this utility model, a blind hole is provided on the side of the extrusion block near the fixed ring, one end of the insertion rod is fixedly connected to the inner wall of the blind hole, an insertion cylinder is installed on the inner side of the blind hole, an insertion hole that mates with the insertion cylinder is provided on the inner side of the fixed ring, a through hole that mates with the insertion rod is installed inside the insertion hole, a fixed plate is fixedly installed on the end of the insertion rod away from the extrusion block through the through hole, and both ends of the compression spring are fixedly connected to the inner walls of the blind hole and the insertion hole, respectively.

[0013] In a preferred embodiment of the flue gas analyzer filtration device of this utility model, sealing rings are provided on the outer surface of the insert and the upper surface of the fixing ring.

[0014] As a preferred embodiment of the flue gas analyzer filtration device of this utility model, the lower surface of the fixed base is provided with an annular groove, the insert ring is inserted into the annular groove, and the top of the inner wall of the annular groove is provided with an L-shaped slot that cooperates with the L-shaped locking block.

[0015] As a preferred embodiment of the flue gas analyzer filtration device of this utility model, the outer surface of the fixed base has two round holes, the end of the limiting pin away from the fixed base is equipped with a pull plate, the two ends of the tension spring are respectively fixedly connected to the inner wall of the round holes and the outer surface of the pull plate, and the outer surfaces of the two L-shaped blocks are provided with limiting holes that cooperate with the limiting pin.

[0016] (III) Beneficial Effects

[0017] This invention provides a filtration device for a flue gas analyzer. It has the following beneficial effects:

[0018] 1. The inclined surface of the extrusion block facilitates filter element insertion. Under the combined action of the insert, rod, and extrusion spring, the extrusion block is positioned and squeezes the filter element. The sealing ring on the outer surface of the insert cylinder provides a seal, and the extrusion block squeezes the filter element to ensure that the filter element is positioned in the center inside the air guide cover. This facilitates filter element installation and prevents the filter element from shifting and failing to fit with the mounting base.

[0019] 2. After inserting the air guide cover into the fixed base, rotating the air guide cover will cause the insert ring and L-shaped locking block to engage with the ring groove and L-shaped locking groove respectively, achieving initial locking. Under the action of the tension spring, the limit pin will engage with the limit hole on the outer surface of the L-shaped locking block, thereby locking the air guide cover and the fixed base. The installation is quick and convenient. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is an exploded structural diagram of the entire utility model.

[0023] Figure 3 This is an exploded structural diagram of the limiting component of this utility model.

[0024] Figure 4 This is an exploded structural diagram of the locking component of this utility model.

[0025] Figure 5 This is an exploded structural diagram of the limiting pin of this utility model.

[0026] Figure 6 This is a schematic diagram of the L-shaped card slot of this utility model.

[0027] In the diagram, 1. Air guide hood; 2. Fixing base; 3. Limiting assembly; 301. Fixing ring; 302. Fixing plate; 303. Insert rod; 304. Insert cylinder; 305. Extrusion block; 306. Compression spring; 4. Locking assembly; 401. Mounting plate; 402. L-shaped locking block; 403. Limiting pin; 404. Tension spring; 405. Insert ring; 406. Ring groove; 407. L-shaped locking groove; 5. Filter element. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] Example 1

[0030] Reference Figure 1 , Figure 2 and Figure 3This is the first embodiment of the present utility model. This embodiment provides a flue gas analyzer filtration device, including a fixed base 2, an air guide hood 1 is arranged below the fixed base 2, a filter element 5 is arranged inside the air guide hood 1, a limit component 3 is arranged inside the air guide hood 1, and a locking component 4 is arranged between the air guide hood 1 and the fixed base 2.

[0031] The limiting component 3 includes a fixing ring 301 fixedly installed inside the air guide cover 1. Four insert rods 303 are inserted into the fixing ring 301. A compression block 305 is fixedly installed at one end of the insert rod 303 near the inside of the air guide cover 1. A compression spring 306 is installed between the compression block 305 and the fixing ring 301.

[0032] Specifically, the top of the extrusion block 305 is provided with a sloping surface on the side near the center of the air guide block. There are four extrusion blocks 305 in total, and there is a reserved gap area between adjacent extrusion blocks 305. The sloping surface makes it convenient for the filter element 5 to be inserted into the air guide cover 1. The sloping surface can drive the extrusion block 305 to open outward, which facilitates the insertion of the air guide cover 1.

[0033] Specifically, a blind hole is provided on the side of the extrusion block 305 near the fixing ring 301. One end of the insertion rod 303 is fixedly connected to the inner wall of the blind hole. An insertion cylinder 304 is installed on the inner side of the blind hole. An insertion hole that mates with the insertion cylinder 304 is provided on the inner side of the fixing ring 301. A through hole that mates with the insertion rod 303 is installed inside the insertion hole. A fixing plate 302 is fixedly installed on the end of the insertion rod 303 away from the extrusion block 305 through the through hole. Both ends of the compression spring 306 are fixedly connected to the inner walls of the blind hole and the insertion hole, respectively. Through the cooperation of the insertion cylinder 304 and the insertion hole and the cooperation of the insertion rod 303 and the through hole, the two work together to ensure that the extrusion block 305 remains stable after it opens.

[0034] Specifically, sealing rings are provided on the outer surface of the insert 304 and the upper surface of the fixing ring 301. The sealing rings prevent air leakage and ensure air supply sealing.

[0035] Furthermore, the fixed base 2 has an air inlet and an air outlet on both sides, and an insertion interface at the bottom of the fixed base 2, which is connected to the air inlet. The top of the filter element 5 has an insertion hole that matches the insertion interface. The lower surface of the fixed base 2 also has an air outlet on the outer periphery of the insertion interface, which is connected to the air blowing hole. When the new filter element 5 is inserted into the air guide cover 1, the bottom of the filter element 5 is driven by the inclined surface of the top outer surface of the extrusion block 305 to expand outward, thereby driving the insertion cylinder 304 to insert into the insertion hole on the inner side of the fixed ring 301, thereby achieving a plug-in seal. The extrusion block 305 extrudes the filter element 5 to achieve a limit, ensuring that the filter element 5 is positioned in the center position inside the air guide cover 1. The connection relationship, working principle and operation sequence between the fixed base 2, the protective cover and the filter element 5 and other components are existing technologies and are common knowledge known to those skilled in the art, and will not be elaborated further here.

[0036] Example 2

[0037] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 This is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The locking component 4 includes a mounting plate 401 fixedly installed on the top outer surface of the air guide cover 1. A plug ring 405 is installed on the top of the mounting plate 401. Several L-shaped locking blocks 402 are provided on the top of the plug ring 405. Two limiting pins 403 are interlaced inside the fixing base 2. A tension spring 404 is sleeved on the outer surface of the limiting pin 403.

[0038] Specifically, the lower surface of the fixed base 2 is provided with an annular groove 406, and the insert ring 405 is inserted into the annular groove 406. The top of the inner wall of the annular groove 406 is provided with an L-shaped slot 407 that cooperates with the L-shaped locking block 402. The insert ring 405 can be inserted into the annular groove 406, and the outer side of the insert ring 405 is also provided with a sealing ring. The sealing ring on the outer side of the insert ring 405 can ensure that the insert ring 405 and the annular groove 406 are inserted tightly enough and keep sealed. The width of the bottom opening of the L-shaped slot 407 is the same as the overall width of the L-shaped locking block 402, which makes it easy for the L-shaped locking block 402 to be inserted into the L-shaped slot 407. The horizontal part of the inner wall of the L-shaped slot 407 can cooperate with the horizontal part of the L-shaped locking block 402, so that while locking the L-shaped locking block 402, the air guide cover 1 is driven to hang against the bottom of the fixed base 2.

[0039] Specifically, the outer surface of the fixed base 2 has two round holes. The end of the limiting pin 403 away from the fixed base 2 is equipped with a pull plate. The two ends of the tension spring 404 are fixedly connected to the inner wall of the round hole and the outer surface of the pull plate, respectively. The outer surfaces of the two L-shaped blocks 402 are provided with limiting holes that cooperate with the limiting pin 403. When in use, the L-shaped blocks 402 with limiting holes on their outer surfaces need to be aligned with the round holes on the outer surface of the fixed base 2 to ensure that the limiting pin 403 can pass through the limiting hole and cooperate with the round holes on the outer surface of the L-shaped blocks 402.

[0040] Furthermore, pulling the pull plates on both sides causes the tension spring 404 to extend, thereby causing the limit pin 403 to separate from the round hole, which in turn causes the L-shaped locking block 402 to unlock. Then, rotating the air guide cover 1 causes the insertion ring 405 and the L-shaped locking block 402 to rotate through the mounting plate 401, thereby causing the horizontal part of the L-shaped locking block 402 to separate from the horizontal part inside the L-shaped slot 407, so that the air guide cover 1 can be pulled out from the bottom of the fixed base 2. During installation, the same steps are followed. Through the cooperation of the L-shaped slot 407 and the L-shaped locking block 402, the air guide cover 1 can be hung under the fixed base 2. The cooperation of the L-shaped locking block 402 and the L-shaped slot 407 enables the load to be borne.

[0041] Working principle: When replacing filter element 5, pull the pull plates on both sides, causing the tension spring 404 to extend, thereby causing the limit pin 403 to separate from the round hole, and then causing the L-shaped locking block 402 to unlock. Then, rotate the air guide cover 1, which drives the insertion ring 405 and the L-shaped locking block 402 to rotate through the mounting plate 401, thereby causing the lateral part of the L-shaped locking block 402 to separate from the lateral part inside the L-shaped slot 407, so that the air guide cover 1 can be pulled out from the bottom of the fixing base 2. Then, pull the fixing plate 302, which causes the squeezing block 305 to expand outward through the insertion rod 303, thereby reducing the squeezing limit on filter element 5, so that filter element 5 can be pulled out from inside the air guide cover 1. Insert the new filter element 5 into the air guide cover 1. The bottom of the filter element 5 is driven by the inclined surface of the top outer surface of the squeezing block 305 to expand outward, thereby causing the insertion cylinder 304 to be inserted into the insertion hole on the inner side of the fixing ring 301, thus realizing the insertion. The filter element 5 is sealed by the compression block 305, which compresses it to ensure that the filter element 5 is positioned in the center inside the air guide cover 1. Then, the air guide cover 1 is inserted into the bottom of the fixed base 2, causing the insertion hole at the top of the filter element 5 to engage with the insertion interface at the bottom of the fixed base 2. During insertion, the L-shaped locking block 402 with the limiting hole on its outer surface must be aligned with the round hole on the outer surface of the fixed base 2. After the L-shaped locking block 402 is inserted into the L-shaped slot 407 at the top of the inner cavity of the annular groove 406, the air guide cover 1 is rotated, causing the horizontal part of the L-shaped locking block 402 to engage with the horizontal part inside the L-slot, thus hanging the air guide cover 1 under the fixed base 2. During rotation, the pull plate must be kept pulled. After rotation, the pull plate is released, and under the reset action of the tension spring 404, the limiting pin 403 engages with the limiting hole on the outer surface of the L-shaped locking block 402, thereby locking and finally completing the replacement of the filter element 5.

[0042] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A flue gas analyzer filtering device, comprising a fixing seat (2), a gas guide cover (1) is arranged below the fixing seat (2), a filter element (5) is arranged inside the gas guide cover (1), characterized in that: The air guide cover (1) is provided with a limiting component (3) inside, and a locking component (4) is provided between the air guide cover (1) and the fixed base (2). The limiting component (3) includes a fixing ring (301) fixedly installed inside the air guide cover (1). Four insert rods (303) are inserted inside the fixing ring (301). A compression block (305) is fixedly installed at one end of the insert rod (303) near the inside of the air guide cover (1). A compression spring (306) is installed between the compression block (305) and the fixing ring (301). The locking assembly (4) includes a mounting plate (401) fixedly installed on the top outer surface of the air guide cover (1). A plug ring (405) is installed on the top of the mounting plate (401). Several L-shaped locking blocks (402) are provided on the top of the plug ring (405). Two limiting pins (403) are interlaced inside the fixing seat (2). A tension spring (404) is sleeved on the outer surface of the limiting pin (403).

2. The flue gas analyzer filtration device according to claim 1, characterized in that: The top of the extrusion block (305) is provided with a sloping surface on the side near the center of the air guide block. There are four extrusion blocks (305) in total, and a gap area is reserved between adjacent extrusion blocks (305).

3. The flue gas analyzer filtration device according to claim 2, characterized in that: The extrusion block (305) has a blind hole on the side near the fixing ring (301). One end of the insertion rod (303) is fixedly connected to the inner wall of the blind hole. An insertion cylinder (304) is installed on the inner side of the blind hole. An insertion hole that matches the insertion cylinder (304) is opened on the inner side of the fixing ring (301). A through hole that matches the insertion rod (303) is installed inside the insertion hole. A fixing plate (302) is fixedly installed on the end of the insertion rod (303) away from the extrusion block (305) through the through hole. The two ends of the compression spring (306) are fixedly connected to the inner walls of the blind hole and the insertion hole, respectively.

4. The flue gas analyzer filtration device according to claim 3, characterized in that: The outer surface of the insert (304) and the upper surface of the fixing ring (301) are both provided with sealing rings.

5. The flue gas analyzer filtration device according to claim 4, characterized in that: The lower surface of the fixed base (2) is provided with an annular groove (406), the insert ring (405) is inserted into the annular groove (406), and the top of the inner wall of the annular groove (406) is provided with an L-shaped slot (407) that cooperates with the L-shaped slot block (402).

6. The flue gas analyzer filtration device according to claim 5, characterized in that: Two round holes are opened on the outer surface of the fixed base (2). A pull plate is installed on the end of the limiting pin (403) away from the fixed base (2). The two ends of the tension spring (404) are fixedly connected to the inner wall of the round hole and the outer surface of the pull plate, respectively. The outer surfaces of the two L-shaped blocks (402) are provided with limiting holes that cooperate with the limiting pin (403).

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