Waste gas sulfuric acid mist sampling head with anti-blocking structure
By incorporating primary and secondary filters into the sampling head, the problem of easy clogging in traditional sampling heads is solved, achieving anti-clogging and efficient sampling results while reducing sampling costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BANGDACHENG ENVIRONMENTAL MONITORING CENT (JIANGSU) CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-10
AI Technical Summary
Traditional sulfuric acid mist sampling heads for waste gas are prone to clogging, resulting in poor sampling results, increased usage costs, and internal blockage issues.
The waste gas sulfuric acid mist sampling head with an anti-clogging structure includes a sampling tube and a sampling head. The sampling head has two limiting rings fixedly connected to its outer surface. A locking mechanism is set between the sampling head and the sampling tube. The anti-clogging mechanism includes primary and secondary filter screens inserted into the bottom of the sampling head. An arc-shaped clamping plate is set inside the sampling head to prevent clogging inside the sampling head.
By combining a primary filter and a secondary filter, clogging of the sampling head is effectively prevented, improving sampling efficiency and reducing sampling costs.
Smart Images
Figure CN224480325U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of waste gas sulfuric acid mist sampling technology, and in particular relates to a waste gas sulfuric acid mist sampling head with an anti-clogging structure. Background Technology
[0002] Waste gas sulfuric acid mist sampling heads are specialized devices that capture gaseous sulfuric acid mist (such as sulfuric acid particles or acid mist) from industrial emissions, ambient air, or specific pollution sources using physical or chemical methods.
[0003] Traditional sulfuric acid mist sampling heads for waste gas are typically narrow in diameter and are inserted directly into the waste gas emission pipe for sampling. Since the waste gas contains a large amount of dust and particulate matter, these particles accumulate inside the sampling head during the sampling process. In severe cases, this can cause blockage inside the sampling head, making it difficult for the gas to flow and thus affecting the sampling. Furthermore, once blocked, the sampling head is difficult to clean and needs to be replaced with a new one, increasing the cost of use. Utility Model Content
[0004] The purpose of this invention is to provide a waste gas sulfuric acid mist sampling head with an anti-clogging structure. Specifically, the anti-clogging mechanism involves the primary and secondary filters being quickly installed on the sampling head via a plug-in connection. During sampling, the primary filter performs initial filtration of dust particles in the waste gas, while the secondary filter performs a second filtration, thus intercepting particles and improving the sampling effect of waste gas sulfuric acid mist. Furthermore, the interception of fine particles effectively prevents clogging of the sampling head. This solves the problem of traditional waste gas sulfuric acid mist sampling heads, which typically have a narrow diameter and are directly inserted into the waste gas emission pipe for sampling, leading to particle accumulation inside the sampling head and, in severe cases, internal clogging.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a waste gas sulfuric acid mist sampling head with an anti-clogging structure, comprising a sampling tube, a sampling head disposed on the left side of the sampling tube, two limiting rings fixedly connected to the outer surface of the sampling head, and further comprising:
[0007] A locking mechanism, disposed between the sampling head and the sampling tube, is used to quickly connect the sampling head to the sampling tube; and
[0008] An anti-clogging mechanism is provided inside the sampling head. The anti-clogging mechanism includes a primary filter screen inserted into the bottom of the sampling head, a secondary filter screen above the primary filter screen, and several arc-shaped clamping plates fixedly connected to the inner wall of the sampling head.
[0009] The primary filter and the arc-shaped plate are both used to intercept particles in the exhaust gas. The arc-shaped plate has two triangular protrusions on the side facing the inner wall of the primary filter, and a groove is formed between the two triangular protrusions.
[0010] Furthermore, an inner annular protrusion is fixedly connected to the inner wall of the primary filter screen. The inner annular protrusion is adapted to the groove on the arc-shaped clamping plate. A second sealing ring is sleeved on the inner wall of the sampling head. The outer side of the primary filter screen contacts the inner wall of the second sealing ring. The arc-shaped clamping plate clamps the primary filter screen in place by engaging the inner annular protrusion with the groove. When the primary filter screen is inserted into the bottom of the sampling head, the inner annular protrusion on the inner wall of the primary filter screen will engage with the arc-shaped clamping plate. When the inner annular protrusion moves into the groove of the protrusion on the inner side of the arc-shaped clamping plate, the arc-shaped clamping plate will reset itself by its own elasticity and clamp the inner annular protrusion in place, thus completing the installation of the primary filter screen.
[0011] The second sealing ring is used to seal the gap between the primary filter and the sampling head.
[0012] Furthermore, an inner convex ring two is provided above the secondary filter screen, and the inner convex ring two is fixedly connected to the inner wall of the sampling head. A rubber collar is sleeved on the outer side of the secondary filter screen. The rubber collar is used to fix the secondary filter screen in the sampling head by extrusion force, and the inner convex ring two is used to limit the position of the secondary filter screen. When the secondary filter screen is inserted into the sampling head, the friction force on the outer side of the secondary filter screen will be increased by the rubber collar, thus fixing the secondary filter screen in the sampling head.
[0013] The rubber collar is used to seal the gap between the secondary filter and the sampling head.
[0014] Furthermore, two L-shaped protruding plates are fixedly connected to the bottom of the primary filter screen, and a protruding rod is fixedly connected to the center of the bottom of the secondary filter screen. The protruding plates are used to assist in the disassembly of the primary filter screen, and the protruding rod is used to assist in the disassembly of the secondary filter screen. When the operator pulls the protruding plates, the primary filter screen moves, causing the inner annular protrusion to disengage from the arc-shaped retaining plate, thereby disassembling the primary filter screen. Then, the protruding rod is pulled to disassemble and remove the secondary filter screen, so that the primary and secondary filters screens can be cleaned.
[0015] Furthermore, the locking mechanism includes a locking ring sleeved on the outside of the sampling head, the locking ring being positioned between two limiting rings, a cover plate being fixedly connected to the right side of the outer surface of the sampling head, a sealing ring being sleeved on the right side of the cover plate, and an inner convex ring being fixedly connected to the left side of the inner wall of the sampling tube; when the right side of the sampling head is inserted into the left side of the sampling tube, the sealing ring on the cover plate contacts the inner convex ring, and the sampling head is locked and fixed by the locking ring, at which point the sealing ring is compressed, thereby achieving a sealing effect;
[0016] The sampling tube has a thread on its left side, and the inner wall of the locking ring has a thread, with the locking ring being threadedly connected to the sampling tube.
[0017] Furthermore, the cover plate is used for insertion into the left side of the sampling tube. After the cover plate is inserted into the sampling tube, the sealing ring will contact the inner convex ring. The two limiting rings are used to limit the locking ring. When the locking ring is locked, it will push the sampling head through the limiting ring on the right side. The two limiting rings can always limit the locking ring on the sampling head to prevent it from falling off or being lost, and facilitate the installation and removal of the sampling head.
[0018] This utility model has the following beneficial effects:
[0019] 1. This utility model incorporates an anti-clogging mechanism, specifically by quickly installing both the primary and secondary filters onto the sampling head via a plug-in connection. During sampling, the primary filter performs initial filtration of dust particles in the exhaust gas, while the secondary filter performs a second filtration, thereby intercepting particles in the exhaust gas and improving the sampling effect of sulfuric acid mist. Furthermore, the interception of fine particulate matter effectively prevents clogging of the sampling head.
[0020] 2. This utility model features a locking mechanism. Specifically, the right side of the sampling head is inserted into the left side of the sampling tube, so that the sealing ring on the cover plate contacts the inner convex ring. Then, the locking ring is moved and threadedly connected to the left side of the sampling tube, thereby quickly installing the sampling head. By rotating the locking ring counterclockwise to disengage it from the sampling tube, the sampling head can be disassembled, facilitating subsequent maintenance.
[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying 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.
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a front view cross-sectional structural diagram of the sampling tube of this utility model;
[0025] Figure 3 This is a frontal cross-sectional view of the sampling head of this utility model;
[0026] Figure 4This utility model Figure 3 A magnified structural diagram of A in the middle;
[0027] Figure 5 This is a schematic diagram of the overall structure of the anti-clogging mechanism of this utility model;
[0028] Figure 6 This is a schematic diagram of the right side structure of the sampling head of this utility model.
[0029] The attached diagram lists the components represented by each number as follows:
[0030] 1. Sampling tube; 11. Sampling head; 111. Limiting ring; 2. Locking mechanism; 21. Locking ring; 22. Cover plate; 23. Sealing ring one; 24. Inner convex ring one; 3. Anti-clogging mechanism; 31. Primary filter screen; 311. Inner annular protrusion; 312. Convex plate; 32. Arc-shaped clamping plate; 33. Secondary filter screen; 331. Rubber collar; 332. Convex rod; 34. Inner convex ring two; 35. Sealing ring two. Detailed Implementation
[0031] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see Figures 1-6 As shown, this utility model is a waste gas sulfuric acid mist sampling head with an anti-clogging structure, including a sampling tube 1, a sampling head 11 disposed on the left side of the sampling tube 1, two limiting rings 111 fixedly connected to the outer surface of the sampling head 11, and further including:
[0033] Locking mechanism 2 is disposed between sampling head 11 and sampling tube 1. Locking mechanism 2 is used to quickly connect sampling head 11 to sampling tube 1; and
[0034] The anti-clogging mechanism 3 is located inside the sampling head 11. The anti-clogging mechanism 3 includes a primary filter 31 inserted into the bottom of the sampling head 11, a secondary filter 33 above the primary filter 31, and several arc-shaped clamps 32 fixedly connected to the inner wall of the sampling head 11. The primary filter 31 and the secondary filter 33 are quickly installed on the sampling head 11 by insertion. During the sampling process, the primary filter 31 filters the dust particles in the exhaust gas for the first time, and the secondary filter 33 filters the exhaust gas again, thereby intercepting the particles in the exhaust gas, improving the sampling effect of sulfuric acid mist in the exhaust gas, and effectively preventing the sampling head 11 from clogging by intercepting fine particulate matter.
[0035] Both the primary filter screen 31 and the arc-shaped clamping plate 32 are used to intercept particles in the exhaust gas. The arc-shaped clamping plate 32 has two triangular protrusions on the side facing the inner wall of the primary filter screen 31, and a groove is formed between the two triangular protrusions.
[0036] An inner annular protrusion 311 is fixedly connected to the inner wall of the primary filter screen 31. The inner annular protrusion 311 is adapted to the groove on the arc-shaped clamping plate 32. A sealing ring 35 is sleeved on the inner wall of the sampling head 11. The outer side of the primary filter screen 31 contacts the inner wall of the sealing ring 35. The arc-shaped clamping plate 32 clamps and fixes the primary filter screen 31 by the groove and the inner annular protrusion 311.
[0037] Among them, the sealing ring 35 is used to seal the gap between the primary filter screen 31 and the sampling head 11.
[0038] An inner convex ring 34 is provided above the secondary filter screen 33. The inner convex ring 34 is fixedly connected to the inner wall of the sampling head 11. A rubber collar 331 is sleeved on the outside of the secondary filter screen 33. The rubber collar 331 is used to fix the secondary filter screen 33 inside the sampling head 11 by squeezing force. The inner convex ring 34 is used to limit the position of the secondary filter screen 33.
[0039] The rubber collar 331 is used to seal the gap between the secondary filter screen 33 and the sampling head 11.
[0040] Two protruding plates 312 are fixedly connected to the bottom of the primary filter screen 31. The protruding plates 312 are L-shaped. A protruding rod 332 is fixedly connected to the center of the bottom of the secondary filter screen 33. The protruding plates 312 are used to assist in the disassembly of the primary filter screen 31, and the protruding rod 332 is used to assist in the disassembly of the secondary filter screen 33.
[0041] The locking mechanism 2 includes a locking ring 21 sleeved on the outside of the sampling head 11. The locking ring 21 is positioned between two limiting rings 111. A cover plate 22 is fixedly connected to the right side of the outer surface of the sampling head 11. A sealing ring 23 is sleeved on the right side of the cover plate 22. An inner convex ring 24 is fixedly connected to the left side of the inner wall of the sampling tube 1. The right side of the sampling head 11 is inserted into the left side of the sampling tube 1, so that the sealing ring 23 on the cover plate 22 contacts the inner convex ring 24. Then, the locking ring 21 is moved and threadedly connected to the left side of the sampling tube 1, thereby quickly installing the sampling head 11. The sampling head 11 can be disassembled by rotating the locking ring 21 counterclockwise to disengage it from the sampling tube 1, thus facilitating subsequent maintenance.
[0042] The sampling tube 1 has a thread on its left side, and the inner wall of the locking ring 21 has a thread, with the locking ring 21 being threadedly connected to the sampling tube 1.
[0043] The cover plate 22 is used for insertion into the left side of the sampling tube 1. After the cover plate 22 is inserted into the sampling tube 1, the sealing ring 23 will contact the inner convex ring 24. The two limiting rings 111 are used to limit the locking ring 21. When the locking ring 21 is locked, it will push the sampling head 11 through the right limiting ring 111.
[0044] One specific application of this embodiment is:
[0045] In use, first insert the secondary filter 33 into the sampling head 11. The outer side of the secondary filter 33 will increase friction through the rubber collar 331, fixing the secondary filter 33 inside the sampling head 11. The rubber collar 331 will also provide a sealing effect. When the secondary filter 33 contacts the inner convex ring 34, the installation of the secondary filter 33 is complete. Then, insert the primary filter 31 into the bottom of the sampling head 11. At this time, the inner annular protrusion 311 on the inner wall of the primary filter 31 will engage with the arc-shaped retaining plate 32. When the inner annular protrusion 311 moves into the groove of the inner protrusion of the arc-shaped retaining plate 32, the arc-shaped retaining plate 32 will reset itself through its own elasticity and lock the inner annular protrusion 311 in place. The installation of the primary filter 31 is then complete, and the outer side of the primary filter 31 will contact the sealing ring 35, thus providing a sealing effect. After completion, insert the right side of the sampling head 11 into the left side of the sampling tube 1, so that the sealing ring 23 on the cover plate 22 contacts the inner convex ring 24. Then move the locking ring 21 and make it threadedly connected to the left side of the sampling tube 1. By continuously rotating the locking ring 21, the sampling head 11 is locked and fixed. At this time, the sealing ring 23 is squeezed, thereby achieving the sealing effect, and sampling can be carried out. When sampling, the opening of the sampling head 11 is oriented in the opposite direction of the exhaust gas flow, so that the exhaust gas can smoothly enter the sampling head 11. The first-stage filter 31 will filter the dust particles in the exhaust gas for the first time. The exhaust gas that passes through the first-stage filter 31 will be filtered again through the second-stage filter 33, thereby intercepting the particles in the exhaust gas, improving the sampling effect of sulfuric acid mist in the exhaust gas, and effectively preventing the sampling head 11 from becoming blocked by the interception of fine particulate matter.
[0046] When it is necessary to clean the primary filter 31 and the secondary filter 33, the operator forcefully pulls the protruding plate 312 to move the primary filter 31, causing the inner annular protrusion 311 to disengage from the arc-shaped retaining plate 32, thereby disassembling the primary filter 31. Then, the protruding rod 332 is pulled to disassemble and remove the secondary filter 33, which allows for the cleaning of the primary filter 31 and the secondary filter 33 for future use. After cleaning, the secondary filter 33 and the primary filter 31 can be installed in sequence.
[0047] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0048] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A waste gas sulfuric acid mist sampling head with an anti-clogging structure, comprising a sampling tube (1), wherein a sampling head (11) is disposed on the left side of the sampling tube (1), and two limiting rings (111) are fixedly connected to the outer surface of the sampling head (11), characterized in that, Also includes: A locking mechanism (2) is provided between the sampling head (11) and the sampling tube (1). The locking mechanism (2) is used to quickly connect the sampling head (11) to the sampling tube (1). as well as Anti-clogging mechanism (3) is set inside the sampling head (11). The anti-clogging mechanism (3) includes a primary filter screen (31) inserted into the bottom of the sampling head (11). A secondary filter screen (33) is set above the primary filter screen (31). Several arc-shaped clamping plates (32) are fixedly connected to the inner wall of the sampling head (11). The primary filter (31) and the arc-shaped plate (32) are both used to intercept particles in the exhaust gas. The arc-shaped plate (32) has two triangular protrusions on the side facing the inner wall of the primary filter (31), and a groove is formed between the two triangular protrusions.
2. The waste gas sulfuric acid mist sampling head with an anti-clogging structure according to claim 1, characterized in that, The inner wall of the primary filter (31) is fixedly connected with an inner annular protrusion (311), which is adapted to the groove on the arc-shaped clamping plate (32). The inner wall of the sampling head (11) is fitted with a sealing ring II (35). The outer side of the primary filter (31) is in contact with the inner wall of the sealing ring II (35). The arc-shaped clamping plate (32) clamps and fixes the primary filter (31) by the groove and the inner annular protrusion (311). The sealing ring 2 (35) is used to seal the gap between the primary filter screen (31) and the sampling head (11).
3. A waste gas sulfuric acid mist sampling head with an anti-clogging structure according to claim 2, characterized in that, An inner convex ring (34) is provided above the secondary filter (33). The inner convex ring (34) is fixedly connected to the inner wall of the sampling head (11). A rubber collar (331) is sleeved on the outside of the secondary filter (33). The rubber collar (331) is used to fix the secondary filter (33) in the sampling head (11) by squeezing force. The inner convex ring (34) is used to limit the position of the secondary filter (33). The rubber collar (331) is used to seal the gap between the secondary filter (33) and the sampling head (11).
4. A waste gas sulfuric acid mist sampling head with an anti-clogging structure according to claim 3, characterized in that, The bottom of the primary filter screen (31) is fixedly connected to two protruding plates (312), which are L-shaped. The bottom center of the secondary filter screen (33) is fixedly connected to a protruding rod (332). The protruding plates (312) are used to assist in the disassembly of the primary filter screen (31), and the protruding rod (332) is used to assist in the disassembly of the secondary filter screen (33).
5. A waste gas sulfuric acid mist sampling head with an anti-clogging structure according to claim 2, characterized in that, The locking mechanism (2) includes a locking ring (21) sleeved on the outside of the sampling head (11). The locking ring (21) is located between two limiting rings (111). A cover plate (22) is fixedly connected to the right side of the outer surface of the sampling head (11). A sealing ring (23) is sleeved on the right side of the cover plate (22). An inner convex ring (24) is fixedly connected to the left side of the inner wall of the sampling tube (1). The sampling tube (1) has a thread on its left side, and the inner wall of the locking ring (21) has a thread. The locking ring (21) is threadedly connected to the sampling tube (1).
6. A waste gas sulfuric acid mist sampling head with an anti-clogging structure according to claim 5, characterized in that, The cover plate (22) is used for insertion into the left side of the sampling tube (1). After the cover plate (22) is inserted into the sampling tube (1), the sealing ring (23) will contact the inner convex ring (24).
7. A waste gas sulfuric acid mist sampling head with an anti-clogging structure according to claim 6, characterized in that, The two limiting rings (111) are used to limit the locking ring (21), which pushes the sampling head (11) through the right limiting ring (111) when locked.