Coated steel pipe fitting

Abstract

The utility model provides a kind of coating steel pipe fitting, it is related to steel pipe field, including fixed mechanism, the inner wall sliding connection of fixed mechanism has pipe fitting mechanism;The fixed mechanism includes upper support and lower support, the top of lower support is equipped with a set of positioning slot, in the utility model, adopt the cooperation structure of insert block and slot, positioning block and positioning slot, replace traditional multi-bolt connection mode, when connecting, only need the positioning block of upper support is inserted into the positioning slot of lower support, then rotates movable plate, makes insert block and enter slot can complete assembly, simultaneously, the rebound force provided by multiple compression springs makes the whole structure stably fixed on pipe fitting, indirectly ensure the stable connection of pipe fitting and the pipeline to be connected, when disassembling, only need reverse operation, do not need to twist bolt one by one, significantly reduce dismounting step, especially applicable to municipal drainage system high frequency overhaul and emergency repair scene, greatly save manpower and time cost.

Description

Technical Field

[0001] This utility model relates to the field of steel pipes, and in particular to a coated steel pipe fitting. Background Technology

[0002] Steel pipes are hollow, long strips of steel that are widely used in fluid transportation, structural support, mechanical parts manufacturing, and construction.

[0003] A coated steel pipe fitting refers to a pipe fitting in which one or more layers of functional materials are coated on the inner and outer surfaces of a steel pipe to improve its corrosion resistance, wear resistance, high temperature resistance or other special properties.

[0004] The existing coated steel pipe fittings have the following shortcomings:

[0005] In municipal drainage systems, steel pipes are often used as the core carriers for transporting water. However, their connection methods have long suffered from inefficiencies. In actual drainage operations, pipe maintenance is a frequent need. Under current technology, the connection between steel pipes and the pipes to be connected often relies on multiple bolts. During connection, the circumferentially distributed bolts need to be tightened one by one to ensure sealing. During maintenance and disassembly, they need to be loosened one by one. The whole process is not only cumbersome but also consumes a lot of manpower and time. Especially in emergency drainage fault repair scenarios, this multi-bolt connection mode will seriously slow down the disassembly and assembly progress, significantly reduce maintenance efficiency, and make it difficult to meet the actual needs of rapid response and efficient operation and maintenance of municipal drainage systems. Utility Model Content

[0006] This invention eliminates the need to tighten each bolt individually, significantly reducing the number of disassembly and assembly steps, thus solving the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a coated steel pipe fitting, including a fixing mechanism, wherein a pipe fitting mechanism is slidably connected to the inner wall of the fixing mechanism; the fixing mechanism includes an upper support and a lower support, wherein a set of positioning grooves is provided on the top of the lower support, and a first connecting block is fixedly connected to the outer wall of each of the lower support, a set of rotating shafts is rotatably connected to the inner wall of the first connecting block, a set of movable plates is fixedly connected to the outer wall of the rotating shafts, and an insert block is fixedly connected to the outer wall of each of the movable plates; a second connecting block is fixedly connected to the outer wall of each of the upper support, and a slot is provided on the top of each of the second connecting blocks; a set of positioning blocks is fixedly connected to the bottom of the upper support, and a sliding groove is provided on the inner wall of each positioning groove, and a set of first compression springs is fixedly connected to the inner wall of the positioning groove. Through the above components, the steel pipe fitting can be quickly disassembled and assembled without tightening the bolts one by one, simplifying the connection steps and improving maintenance efficiency.

[0008] Preferably, the outer wall of the insert block is slidably connected to the inner wall of the slot, and the outer wall of the positioning block is slidably connected to the inner wall of the positioning groove. This clarifies the sliding connection relationship between the insert block and the slot, and between the positioning block and the positioning groove, ensuring precise docking of the upper and lower supports and preventing misalignment or loosening during connection.

[0009] Preferably, a set of top plates are slidably connected to the inner wall of the chute, and guide rods are fixedly connected to the inner wall of each chute. The outer wall of the guide rod is slidably connected to the inner wall of the top plate, and the top of the top plate is slidably connected to the bottom of the positioning block. The guide rods restrict the movement direction of the top plate, ensuring that it moves only along the axial direction.

[0010] Preferably, one end of the first compression spring is fixedly connected to the inner wall of the positioning groove, and the other end of the first compression spring is fixedly connected to the bottom of the top plate, so that the two ends of the first compression spring are connected to ensure that it can be used normally in the future.

[0011] Preferably, the outer walls of both the upper and lower supports are fixedly connected with sliding rods, and the shaft ends of the sliding rods are fixedly connected with a set of third connecting blocks. The outer walls of the third connecting blocks are respectively fixedly connected with upper and lower semicircular clamps. The upper and lower supports are connected to the third connecting blocks through the sliding rods, thereby driving the upper and lower semicircular clamps to achieve a circumferential fixation of the pipe fitting.

[0012] Preferably, a set of sealing rings is fixedly connected to the inner walls of the upper and lower semicircular clamps. The sealing rings can effectively fill the gap between the clamps and the pipe, enhance the sealing of the connection, and prevent leakage during drainage.

[0013] Preferably, the outer wall of each slide rod is fitted with a second compression spring. One end of the second compression spring is fixedly connected to the outer wall of the upper semicircular clamp and the lower semicircular clamp, respectively, and the other end of the second compression spring is fixedly connected to the outer wall of the upper bracket and the lower bracket, respectively. By utilizing the elastic force of the second compression spring, it can be ensured that the clamp always fits tightly against the pipe, so that the pipe is stably connected together.

[0014] Preferably, the outer walls of the upper and lower supports are fixedly connected with a third compression spring. By setting the third compression spring and utilizing its elastic force, it can play an auxiliary clamping role, thereby indirectly ensuring the stable connection between the pipe fittings.

[0015] Preferably, the pipe fitting mechanism includes a steel pipe body, with a pipe to be connected slidably connected to the outer wall of the steel pipe body. A set of protruding edges is fixedly connected to the outer walls of the steel pipe body and the pipe to be connected. A polyethylene coating is fixedly connected to the inner wall of the steel pipe body. The polyethylene coating on the inner wall has excellent corrosion resistance and smoothness, which can resist the erosion of acid and alkali media in sewage, while reducing fluid resistance and improving drainage efficiency. The protruding edge design provides a stable clamping point for the clamp, enhancing the connection firmness.

[0016] Preferably, the outer wall of the steel pipe body is fixedly connected with a modified epoxy coating. Compared with ordinary coatings, the modified epoxy coating on the outer wall has stronger weather resistance and soil corrosion resistance, and can adapt to complex environments such as buried and open-air in municipal drainage. It effectively blocks external moisture and chemical substances in the soil from corroding the steel pipe, extends the service life of the steel pipe body, and reduces maintenance costs.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0018] 1. In this utility model, a cooperative structure of insert block and slot, positioning block and positioning groove is adopted to replace the traditional multi-bolt connection method. When connecting, simply insert the positioning block of the upper bracket into the positioning groove of the lower bracket, and then rotate the movable plate to make the insert block snap into the slot to complete the assembly. At the same time, the rebound force provided by multiple compression springs makes the entire structure stably fixed on the pipe fitting, indirectly ensuring the stable connection between the pipe fitting and the pipe to be connected. When disassembling, only the reverse operation is required, without the need to tighten the bolts one by one, which significantly reduces the disassembly and assembly steps. It is especially suitable for high-frequency maintenance and emergency repair scenarios in municipal drainage systems, greatly saving manpower and time costs.

[0019] 2. In this utility model, the inner walls of the upper and lower semicircular clamps are equipped with sealing rings, which can effectively fill gaps and prevent drainage leakage. At the same time, the upper and lower semicircular clamps form a ring-like clamping of the pipe fitting, ensuring a stable and reliable connection. In addition, the inner wall is coated with polyethylene, which has excellent corrosion resistance and can resist the erosion of acid and alkali media in sewage. Its smooth surface reduces fluid resistance and improves drainage efficiency, while meeting hygiene standards and avoiding pollution of the transported water. The outer wall is coated with modified epoxy, which has stronger weather resistance and soil corrosion resistance, and can adapt to complex municipal environments such as buried and open-air environments. It effectively blocks the erosion of steel pipes by water and soil chemicals, thereby extending the service life of the pipe fittings and reducing maintenance costs. Attached Figure Description

[0020] Figure 1 This utility model provides a perspective view of the main structure of a coated steel pipe fitting;

[0021] Figure 2 An enlarged perspective view of the upper support connection structure in a coated steel pipe fitting is provided for this utility model;

[0022] Figure 3 An enlarged perspective view of the interconnected positioning block structure in a coated steel pipe fitting is provided for this utility model.

[0023] Figure 4 An enlarged perspective view of the connection structure of the first connecting block in a coated steel pipe fitting is provided for this utility model;

[0024] Figure 5An enlarged perspective view of the top plate connection structure in a coated steel pipe fitting is provided for this utility model;

[0025] Figure 6 This utility model provides an enlarged perspective view of the connection structure between the steel pipe body and the coated steel pipe fitting.

[0026] Legend: 1. Fixing mechanism; 101. Upper bracket; 102. Third connecting block; 103. Upper semi-circular clamp; 104. Lower semi-circular clamp; 105. Slide rod; 106. Third compression spring; 107. Second compression spring; 108. Sealing ring; 109. Lower bracket; 110. Positioning block; 111. Second connecting block; 112. Slot; 113. First connecting block; 114. Rotating shaft; 115. Movable plate; 116. Positioning groove; 117. Insert block; 118. Slide groove; 119. Guide rod; 120. Top plate; 121. First compression spring; 2. Pipe fitting mechanism; 201. Steel pipe body; 202. Polyethylene coating; 203. Modified epoxy coating; 204. Raised edge; 205. Pipe to be connected. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] Please see Figures 1-6 This utility model provides a technical solution: a coated steel pipe fitting, including a fixing mechanism 1, with a fitting mechanism 2 slidably connected to the inner wall of the fixing mechanism 1; the fixing mechanism 1 includes an upper support 101 and a lower support 109, the top of the lower support 109 is provided with a set of positioning grooves 116, the outer wall of the lower support 109 is fixedly connected with a first connecting block 113, the inner wall of the first connecting block 113 is rotatably connected with a set of rotating shafts 114, the outer wall of the rotating shafts 114 is fixedly connected with a set of movable plates 115, the movable plates 115... All outer walls are fixedly connected with insert blocks 117, and all outer walls of the upper bracket 101 are fixedly connected with second connecting blocks 111. The top of each second connecting block 111 is provided with a slot 112. A set of positioning blocks 110 is fixedly connected to the bottom of the upper bracket 101. All inner walls of the positioning grooves 116 are provided with sliding grooves 118. A set of first compression springs 121 is fixedly connected to the inner wall of the positioning grooves 116. Through the above components, the quick assembly and disassembly of steel pipe fittings can be realized without tightening the bolts one by one, simplifying the connection steps and improving maintenance efficiency.

[0030] like Figure 2 and Figure 3 As shown, the outer wall of the insert 117 is slidably connected to the inner wall of the slot 112, and the outer wall of the positioning block 110 is slidably connected to the inner wall of the positioning groove 116. This clarifies the sliding connection relationship between the insert 117 and the slot 112, and between the positioning block 110 and the positioning groove 116, ensuring the precise docking of the upper bracket 101 and the lower bracket 109, and preventing offset or loosening during connection.

[0031] like Figure 5 As shown, a set of top plates 120 are slidably connected to the inner wall of the slide groove 118. Guide rods 119 are fixedly connected to the inner wall of the slide groove 118. The outer wall of the guide rod 119 is slidably connected to the inner wall of the top plate 120. The top of the top plate 120 is slidably connected to the bottom of the positioning block 110. The guide rod 119 restricts the movement direction of the top plate 120, ensuring that it moves only along the axial direction.

[0032] like Figure 5 As shown, one end of the first compression spring 121 is fixedly connected to the inner wall of the positioning groove 116, and the other end of the first compression spring 121 is fixedly connected to the bottom of the top plate 120, so that the two ends of the first compression spring 121 are connected to ensure that it can be used normally in the future.

[0033] like Figure 2 As shown, the outer walls of the upper support 101 and the lower support 109 are both fixedly connected with slide rods 105. The shaft end of the slide rod 105 is fixedly connected with a set of third connecting blocks 102. The outer walls of the third connecting blocks 102 are respectively fixedly connected with upper semicircular clamps 103 and lower semicircular clamps 104. The upper support 101 and the lower support 109 are connected to the third connecting blocks 102 through the slide rods 105, which in turn drives the upper semicircular clamps 103 and lower semicircular clamps 104 to achieve a ring-shaped fixation of the pipe fitting.

[0034] like Figure 2 As shown, a set of sealing rings 108 are fixedly connected to the inner walls of the upper semicircular clamp 103 and the lower semicircular clamp 104. The sealing rings 108 can effectively fill the gap between the clamp and the pipe, enhance the sealing of the connection, and prevent leakage during drainage.

[0035] like Figure 2 As shown, the outer wall of the slide bar 105 is fitted with a second compression spring 107. One end of the second compression spring 107 is fixedly connected to the outer wall of the upper semicircular clamp 103 and the lower semicircular clamp 104 respectively, and the other end of the second compression spring 107 is fixedly connected to the outer wall of the upper bracket 101 and the lower bracket 109 respectively. By utilizing the elastic force of the second compression spring 107, it can be ensured that the clamp always fits tightly against the pipe, so that the pipe is stably connected together.

[0036] like Figure 2As shown, a third compression spring 106 is fixedly connected to the outer wall of the upper support 101 and the lower support 109. By setting the third compression spring 106 and utilizing its elastic force, it can play an auxiliary clamping role, thereby indirectly ensuring the stable connection between the pipe fittings.

[0037] like Figure 6 As shown, the pipe fitting mechanism 2 includes a steel pipe body 201, with a pipe to be connected 205 slidably connected to the outer wall of the steel pipe body 201. A set of protruding edges 204 are fixedly connected to the outer walls of the steel pipe body 201 and the pipe to be connected 205. A polyethylene coating 202 is fixedly connected to the inner wall of the steel pipe body 201. The polyethylene coating 202 on the inner wall has excellent corrosion resistance and smoothness, which can resist the erosion of acid and alkali media in sewage, while reducing fluid resistance and improving drainage efficiency. The protruding edges 204 are designed to provide stable clamping points for the clamps, enhancing the connection firmness.

[0038] like Figure 6 As shown, a modified epoxy coating 203 is fixedly connected to the outer wall of the steel pipe body 201. Compared with ordinary coatings, the modified epoxy coating 203 on the outer wall has stronger weather resistance and soil corrosion resistance, and can adapt to complex environments such as buried and open-air in municipal drainage. It effectively blocks external moisture and chemical substances in the soil from corroding the steel pipe, extends the service life of the steel pipe body 201, and reduces maintenance costs.

[0039] The usage and working principle of this device are as follows: During connection, the steel pipe body 201 in the pipe fitting mechanism 2 is aligned with the pipe to be connected 205. The protruding edge 204 on its outer wall provides a clamping point for the fixing mechanism 1. Then, the fixing mechanism 1 is operated so that the positioning block 110 at the bottom of the upper support 101 is inserted into the positioning groove 116 at the top of the lower support 109. The positioning block 110 presses down on the top plate 120 in the positioning groove 116. The top plate 120 slides along the guide rod 119 in the slide groove 118 and compresses the first compression spring 121. Then, the lower support 109 is rotated. The first connecting block 113 on the outer wall is connected to the movable plate 115 via the pivot 114. While rotating, the user continuously presses the upper bracket 101. Then, when the movable plate 115 is in a vertical position and above the slot 112, the upper bracket 101 can be released, allowing the insert 117 on the movable plate 115 to engage with the slot 112 of the second connecting block 111 on the outer wall of the upper bracket 101, thus completing the connection between the upper bracket 101 and the lower bracket 109. Simultaneously, the upper bracket 101 and the lower bracket 109 are connected by a third connecting rod 105. The connecting block 102 drives the upper semicircular clamp 103 and the lower semicircular clamp 104 respectively, forming a ring-shaped clamping of the steel pipe body 201 and the pipe to be connected 205. The second compression spring 107 on the outer wall of the slide rod 105 provides elastic force to ensure that the clamps fit tightly. The third compression spring 106 on the outer wall of the upper support 101 and the lower support 109 helps to enhance the clamping force. The sealing ring 108 on the inner wall of the clamp fills the gaps to prevent leakage. The top plate 120 uses the rebound force of the first compression spring 121 to continuously apply force to the positioning block 110. The overall structure uses the elastic force of multiple sets of compression springs. The steel pipe body 201 is fixed in place to ensure a stable connection between the steel pipe body 201 and the pipe to be connected 205. In addition, the polyethylene coating 202 on the inner wall of the steel pipe body 201 and the modified epoxy coating 203 on the outer wall ensure its internal corrosion resistance and external environmental adaptability, respectively. If disassembly is required, press the upper bracket 101 to disengage the insert 117 from the slot 112. The first compression spring 121 loses its binding force and can rebound to push the top plate 120 to lift the positioning block 110, thereby separating the upper bracket 101 from the lower bracket 109 and completing the disassembly of the pipe body.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A coated steel pipe fitting characterized by, It includes a fixing mechanism (1), and the inner wall of the fixing mechanism (1) is slidably connected to a pipe fitting mechanism (2); The fixing mechanism (1) includes an upper bracket (101) and a lower bracket (109). The top of the lower bracket (109) is provided with a set of positioning grooves (116). The outer wall of the lower bracket (109) is fixedly connected with a first connecting block (113). The inner wall of the first connecting block (113) is rotatably connected with a set of rotating shafts (114). The outer wall of the rotating shafts (114) is fixedly connected with a set of movable plates (115). The outer wall of the movable plates (115) is fixedly connected with inserts (117). The outer wall of the upper bracket (101) is fixedly connected with a second connecting block (111). The top of the second connecting block (111) is provided with a slot (112). The bottom of the upper bracket (101) is fixedly connected with a set of positioning blocks (110). The inner wall of the positioning grooves (116) is provided with sliding grooves (118). The inner wall of the positioning grooves (116) is fixedly connected with a set of first compression springs (121).

2. A coated steel pipe fitting according to claim 1, characterized in that: The outer wall of the insert (117) is slidably connected to the inner wall of the slot (112), and the outer wall of the positioning block (110) is slidably connected to the inner wall of the positioning groove (116).

3. A coated steel pipe fitting according to claim 1, characterized in that: A set of top plates (120) are slidably connected to the inner wall of the slide groove (118). Guide rods (119) are fixedly connected to the inner wall of the slide groove (118). The outer wall of the guide rod (119) is slidably connected to the inner wall of the top plate (120). The top of the top plate (120) is slidably connected to the bottom of the positioning block (110).

4. A coated steel pipe fitting according to claim 1, characterized in that: One end of the first compression spring (121) is fixedly connected to the inner wall of the positioning groove (116), and the other end of the first compression spring (121) is fixedly connected to the bottom of the top plate (120).

5. A coated steel pipe fitting according to claim 1, characterized in that: The outer walls of the upper support (101) and the lower support (109) are both fixedly connected with slide rods (105). The shaft end of the slide rod (105) is fixedly connected with a set of third connecting blocks (102). The outer walls of the third connecting blocks (102) are respectively fixedly connected with an upper semicircular clamp (103) and a lower semicircular clamp (104).

6. A coated steel pipe fitting according to claim 5, characterized in that: A set of sealing rings (108) are fixedly connected to the inner walls of the upper semicircular clamp (103) and the lower semicircular clamp (104).

7. A coated steel pipe fitting according to claim 5, characterized in that: The outer wall of each slide rod (105) is fitted with a second compression spring (107). One end of the second compression spring (107) is fixedly connected to the outer wall of the upper semicircular clamp (103) and the lower semicircular clamp (104), respectively. The other end of the second compression spring (107) is fixedly connected to the outer wall of the upper bracket (101) and the lower bracket (109), respectively.

8. A coated steel pipe fitting according to claim 1, characterized in that: The outer walls of the upper support (101) and the lower support (109) are fixedly connected with a third compression spring (106).

9. A coated steel pipe fitting according to claim 1, characterized in that: The pipe fitting mechanism (2) includes a steel pipe body (201), the outer wall of the steel pipe body (201) is slidably connected to a pipe to be connected (205), the outer walls of the steel pipe body (201) and the pipe to be connected (205) are fixedly connected to a set of protruding edges (204), and the inner wall of the steel pipe body (201) is fixedly connected to a polyethylene coating (202).

10. A coated steel pipe fitting according to claim 9, characterized in that: An outer wall of the steel pipe body (201) is fixedly connected with a modified epoxy coating (203).

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