Flange sealing structure for high-corrosion chemical wastewater acid-resistant pipeline

Abstract

The utility model discloses a high-corrosion chemical wastewater acid-resistant pipeline flange sealing structure, which relates to the technical field of chemical environment-friendly equipment and comprises a plurality of pipelines, a flange arranged on the outer wall of the pipeline on the left side and a second flange arranged on the outer wall of the pipeline on the right side. The inner wall of the flange and the inner wall of the second flange are each provided with a sealing mechanism, each sealing mechanism comprises a plurality of threaded holes, the threaded holes are formed in the inner wall of the flange and the inner wall of the second flange, and the outer walls of the threaded holes are connected with flange bolts in a sliding mode. Then a nut matched with a flange bolt is tightened, when the nut makes contact with the gasket, the gasket is pushed forwards, when the gasket starts to move forwards, the sliding shaft is driven to slide on the fixed shaft, the spring is extruded in the sliding process of the sliding shaft, and the effect of preventing leakage of the sealing face due to insufficient pre-tightening force is achieved; and medium leakage caused by a gap of the sealing surface is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of chemical environmental protection equipment technology, and in particular relates to a flange sealing structure for acid-resistant pipelines used in highly corrosive chemical wastewater treatment. Background Technology

[0002] According to the published patent CN219588352U, a flange sealing structure for drainage pipelines in water conservancy projects includes a first flange, a second flange on the right side of the first flange, and an annular seal on the inner side of the opposite side of the first and second flanges. By using the annular seal, which connects to the first and second flanges, the problem of leakage due to poor sealing at the flange connection is solved. However, this also addresses the issue of water leakage potentially being mistaken for ambient water, making timely maintenance difficult. Nevertheless, the following shortcomings remain:

[0003] The aforementioned equipment, when completed, achieves the effect of preventing external water from passing through the mesh bag and coming into contact with the discoloring material, thus avoiding the misconception that a leak has occurred. However, during the treatment of chemical wastewater, the pipeline temperature may fluctuate frequently due to process requirements such as heating and cooling, causing thermal expansion and contraction of flanges and bolts. This may lead to media leakage due to insufficient pre-tightening force on the sealing surface, thereby causing injury to the workers. Therefore, we propose a flange sealing structure for highly corrosive chemical wastewater acid-resistant pipelines. Utility Model Content

[0004] The purpose of this utility model is to provide a flange sealing structure for acid-resistant pipelines used in highly corrosive chemical wastewater treatment. Through the sealing mechanism and fixing mechanism, it solves the problem that while the above-mentioned equipment achieves the effect of preventing water from the external environment from passing through the mesh bag and coming into contact with the discolored material, thus preventing personnel from mistakenly believing that a leak has occurred, during the chemical wastewater treatment process, the pipeline temperature may fluctuate frequently due to process requirements such as heating and cooling, causing thermal expansion and contraction of the flange and bolts. This may lead to media leakage due to insufficient pre-tightening force on the sealing surface, thereby causing injury to the workers.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a flange sealing structure for acid-resistant pipelines of highly corrosive chemical wastewater, including several pipelines. A flange is provided on the outer wall of the pipeline on the left, and a second flange is provided on the outer wall of the pipeline on the right. Both the flange and the second flange are provided with sealing mechanisms on their inner walls.

[0007] The sealing mechanism includes a plurality of threaded holes, all of which are formed on the inner walls of the flange and the second flange. Flange bolts are slidably connected to the outer walls of the plurality of threaded holes. Nuts are threadedly connected to the outer walls of the plurality of flange bolts. A plurality of circular grooves are provided on the inner wall of the flange. Gaskets are contacted on the outer walls of the plurality of nuts. Sleeves are inserted into the inner walls of the plurality of circular grooves. Fixed shafts are fixedly connected to the inner walls of the plurality of sleeves. Springs are sleeved on the outer walls of the plurality of fixed shafts.

[0008] Furthermore, the outer walls of several fixed shafts are slidably connected to sliding shafts, and the outer walls of the ends of several sliding shafts away from the sleeve are fixedly connected to the outer walls of the gaskets. The outer walls of the pipes are provided with fixing mechanisms.

[0009] Furthermore, the fixing mechanism includes several clamps, the outer walls of which are in contact with the outer wall of the pipe, the inner walls of which are threaded with clamp bolts, the outer walls of which are fixedly connected with several fixing plates, and the inner walls of which are rotatably connected with threaded rods.

[0010] Furthermore, guide rods are fixedly connected to the inner wall of the fixed plate on the right side, and sliding rings are threadedly connected to the outer wall of several threaded rods.

[0011] Furthermore, the inner walls of the sliding rings are slidably connected to the outer walls of the guide rods, and the outer walls of several sliding rings are fixedly connected to a fixing plate.

[0012] Furthermore, ratchet wheels are fixedly connected to the outer walls of several of the threaded rods, and L-plates are fixedly connected to the outer walls of several of the clamps.

[0013] Furthermore, each of the inner walls of several L-plates is slidably connected to a sliding rod, and each of the outer walls of several sliding rods is fixedly connected to a locking block.

[0014] Furthermore, the outer walls of several of the locking blocks are in contact with the inner wall of the ratchet, and the outer walls of several of the sliding rods are fitted with springs.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model uses flange bolts, and then tightens the nuts that match the flange bolts. When the nuts contact the gasket, they push it forward. When the gasket begins to move forward, it drives the sliding shaft to slide on the fixed shaft. During the sliding process of the sliding shaft, the spring is compressed. When the spring is compressed, it contracts, which achieves the effect of preventing leakage of the sealing surface due to insufficient preload and avoiding media leakage due to gaps in the sealing surface.

[0017] 2. This utility model incorporates a second fixing plate. When the plate moves a certain distance, it contacts the flange and flange two, at which point the fixing plate two limits and fixes it. As the threaded rod rotates, it drives the ratchet to rotate. When the ratchet starts to rotate, it squeezes the locking block. When the locking block is squeezed, it drives the sliding rod to move. When the sliding rod starts to move, it squeezes the second spring, achieving a further sealing effect on the flange, effectively blocking the leakage path of toxic / flammable and explosive media, and reducing occupational health risks.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This is an exploded view of the gasket structure of this utility model;

[0023] Figure 4 This is a cross-sectional view of the sleeve structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the clamping structure of this utility model;

[0025] Figure 6 This utility model Figure 5 Enlarged view of point A in the middle.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Pipe; 101. Flange; 102. Flange II; 2. Sealing Mechanism; 201. Threaded Hole; 202. Flange Bolt; 203. Nut; 204. Circular Groove; 205. Gasket; 206. Sleeve; 207. Fixed Shaft; 208. Spring; 209. Sliding Shaft; 3. Fixing Mechanism; 301. Hoop; 302. Hoop Bolt; 303. Fixing Plate; 304. Threaded Rod; 305. Guide Rod; 306. Sliding Ring; 307. Fixing Plate II; 308. Ratchet; 309. Sliding Rod; 310. Locking Block; 311. Spring II; 312. L-plate. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-6 As shown, this utility model is a flange sealing structure for acid-resistant pipelines used in highly corrosive chemical wastewater treatment. It includes several pipelines 1. A flange 101 is installed on the outer wall of the left pipeline 1, and a flange 102 is installed on the outer wall of the right pipeline 1. The flanges 101 and 102 are connected by bolts, allowing for easy assembly and disassembly of pipelines to other pipelines, valves, pumps, heat exchangers, and other equipment. This facilitates system maintenance, component replacement, or pipeline expansion. Both flanges 101 and 102 have sealing mechanisms 2 on their inner walls. Each sealing mechanism 2 includes several threaded holes 201, which are located on the inner walls of both flanges 101 and 102. Flange bolts 202 are slidably connected to the outer walls of the threaded holes 201, and nuts 203 are threadedly connected to the outer walls of the flange bolts 202. The flange bolts 202 cooperate with the nuts 203. This fixes and limits the flange. The inner wall of the flange 101 is provided with several circular grooves 204. The outer walls of several nuts 203 are in contact with gaskets 205. The inner walls of several circular grooves 204 are inserted with sleeves 206. The inner walls of several sleeves 206 are fixedly connected with fixed shafts 207. When the nut 203 contacts the gasket 205, it will push it forward. The outer walls of several fixed shafts 207 are fitted with springs 208. The outer walls of several fixed shafts 207 are slidably connected with sliding shafts 209. The outer wall of the end of several sliding shafts 209 away from the sleeves 206 is fixedly connected to the outer wall of the gasket 205. When the gasket 205 starts to move forward, it will drive the sliding shaft 209 to slide on the fixed shaft 207. During the sliding process of the sliding shaft 209, it will compress the spring 208. The outer wall of the pipe 1 is provided with a fixing mechanism 3.

[0030] The fixing mechanism 3 includes several clamps 301, the outer walls of which are in contact with the outer wall of the pipe 1. The inner walls of the clamps 301 are threaded with clamp bolts 302, which are used to tighten the clamps 301 so that they can be placed on the pipe 1. Several fixing plates 303 are fixedly connected to the outer walls of the clamps 301. Threaded rods 304 are rotatably connected to the inner walls of the fixing plates 303. Guide rods 305 are fixedly connected to the inner walls of the right-side fixing plate 303. Sliding rings 306 are threadedly connected to the outer walls of the threaded rods 304. When the threaded rod 304 starts to rotate, it will drive the sliding ring 306 to move. When the sliding ring 306 moves, it will slide on the guide rod 305. At this time, the threaded rod 304 will drive the sliding ring 306 to move. The inner wall of the sliding ring 306 is slidably connected to the outer wall of the guide rod 305. The outer walls of several sliding rings 306 are fixedly connected to the fixing plate 307. At this time, the sliding ring 306 will drive the fixing plate 307 to move together. When it moves a certain distance, it will contact the flange 101 and the flange 102. At this time, the fixing plate 307 will limit and fix it.

[0031] Ratchets 308 are fixedly connected to the outer walls of several threaded rods 304, L-plates 312 are fixedly connected to the outer walls of several clamps 301, and slide rods 309 are slidably connected to the inner walls of several L-plates 312. When the ratchet 308 starts to rotate, it will press the locking block 310. When the locking block 310 is pressed, it will drive the slide rod 309 to move. Locking blocks 310 are fixedly connected to the outer walls of several slide rods 309. The outer walls of several locking blocks 310 are in contact with the inner walls of ratchet 308. Springs 311 are sleeved on the outer walls of several slide rods 309.

[0032] One specific application of this embodiment is:

[0033] When the operator needs to use the equipment, first connect flange 101 and flange 102 to pipe 1 respectively. Then, insert flange bolt 202 into threaded hole 201. When flange bolt 202 is in place, install gasket 205 on flange bolt 202 and insert sleeve 206 into circular groove 204. Then, tighten nut 203 that matches flange bolt 202. When nut 203 contacts gasket 205, it will push it forward. When gasket 205 begins to move forward... When the device moves, it will cause the sliding shaft 209 to slide on the fixed shaft 207. During the sliding process of the sliding shaft 209, it will compress the spring 208. When the spring 208 is compressed, it will contract. When the flange and bolts expand and contract with temperature, the elasticity of the spring can offset the loosening of the bolt preload caused by temperature changes, thus preventing leakage at the sealing surface due to insufficient preload. At this time, the clamp 301 and the sliding ring 306 are installed on the pipe 1. After installation, the clamp bolts 302 on each are tightened to make them clamp tightly on the pipe 1. Then, the threaded rod 304 is rotated. When the threaded rod 304 starts to rotate, it will drive the sliding ring 306 to move. When the sliding ring 306 moves, it will slide on the guide rod 305. At this time, the threaded rod 304 will drive the sliding ring 306 to move. At this time, the sliding ring 306 will drive the fixing plate 307 to move together. When it moves to a certain distance, it will contact the flange 101 and flange 102. At this time, the fixing plate 307 will limit and fix them. When the threaded rod 304 rotates, it will drive the ratchet 308 to rotate. When the ratchet 308 starts to rotate, it will press the locking block 310. When the locking block 310 is pressed, it will drive the slide rod 309 to move. When the slide rod 309 starts to move, it will press the spring 311. When the ratchet 308 flips, it will be restricted by the locking block 310 to prevent the rotation of the threaded rod 304 from affecting the limiting and fixing effect of the fixing plate 307 on flange 101 and flange 102, and further enhance the sealing effect.

[0034] 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.

[0035] 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 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 this 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 high-corrosive chemical wastewater acid-resistant pipeline flange sealing structure, comprising a plurality of pipelines (1), characterized in that: A flange (101) is provided on the outer wall of the pipe (1) on the left side, and a flange (102) is provided on the outer wall of the pipe (1) on the right side. Both flange (101) and flange (102) have sealing mechanisms (2) on their inner walls. The sealing mechanism (2) includes a plurality of threaded holes (201), which are all opened on the inner walls of the flange (101) and the second flange (102). The outer walls of the plurality of threaded holes (201) are slidably connected with flange bolts (202). The outer walls of the plurality of flange bolts (202) are threadedly connected with nuts (203). The inner wall of the flange (101) is provided with a plurality of circular grooves (204). The outer walls of the plurality of nuts (203) are in contact with gaskets (205). The inner walls of the plurality of circular grooves (204) are inserted with sleeves (206). The inner walls of the plurality of sleeves (206) are fixedly connected with fixed shafts (207). The outer walls of the plurality of fixed shafts (207) are sleeved with springs (208).

2. The acid-proof flange sealing structure of the acid-proof pipeline for highly corrosive chemical wastewater according to claim 1, characterized in that, The outer walls of several fixed shafts (207) are slidably connected to sliding shafts (209), and the outer walls of the ends of several sliding shafts (209) away from the sleeve (206) are fixedly connected to the outer walls of the gasket (205). The outer wall of the pipe (1) is provided with a fixing mechanism (3).

3. The acid-proof flange sealing structure of the highly corrosive chemical wastewater resistant pipe according to claim 2, characterized in that, The fixing mechanism (3) includes several clamps (301), the outer walls of which are in contact with the outer wall of the pipe (1), the inner walls of which are threaded with clamp bolts (302), the outer walls of which are fixedly connected with several fixing plates (303), and the inner walls of which are rotatably connected with threaded rods (304).

4. The acid-proof flange sealing structure of acid-resistant pipe for highly corrosive chemical wastewater according to claim 3, characterized in that, Guide rods (305) are fixedly connected to the inner wall of the fixed plate (303) on the right side, and sliding rings (306) are threadedly connected to the outer wall of several threaded rods (304).

5. The acid-proof flange sealing structure of acid-resistant pipe for highly corrosive chemical wastewater according to claim 4, characterized in that, The inner walls of the sliding rings (306) are slidably connected to the outer walls of the guide rods (305), and the outer walls of several sliding rings (306) are fixedly connected to fixing plates (307).

6. The acid-proof flange sealing structure of acid-resistant pipe for highly corrosive chemical wastewater according to claim 5, characterized in that, A ratchet (308) is fixedly connected to the outer wall of each of the threaded rods (304), and an L-plate (312) is fixedly connected to the outer wall of each of the clamps (301).

7. The acid-proof flange sealing structure of the acid-proof pipeline for highly corrosive chemical wastewater according to claim 6, characterized in that, Each of the L plates (312) has a sliding rod (309) slidably connected to its inner wall, and each of the sliding rods (309) has a locking block (310) fixedly connected to its outer wall.

8. The acid-proof flange sealing structure of the acid-proof pipeline for highly corrosive chemical wastewater according to claim 7, characterized in that, The outer walls of several of the said locking blocks (310) are in contact with the inner wall of the ratchet (308), and the outer walls of several of the said sliding rods (309) are fitted with springs (311).

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