Suspension tube wall drying device and working method thereof

Abstract

This invention relates to a suspended pipe outer wall drying device, comprising a main drying head and at least one auxiliary drying head. Both the main and auxiliary drying heads have through holes adapted for the pipe to be dried, and nozzles are provided near the through holes on both heads to purge the circumference of the pipe. Both heads have air inlets communicating with the nozzles. Elastic elements are fixedly connected between the main and auxiliary drying heads, as well as between adjacent auxiliary drying heads. When the main drying head is fixed, the auxiliary drying heads are elastically suspended relative to the main drying head, with the through holes facing each other. Through this structure, the auxiliary drying heads can deform springs according to the curvature of the pipe to be cleaned, thus achieving adaptive oscillation adjustment. This design has a wide range of applications, does not damage or deform the pipe, and makes drying convenient and efficient. Furthermore, the number of auxiliary drying heads can be continuously expanded according to actual needs, further improving the drying effect and efficiency.

Description

Technical Field

[0001] This invention relates to pipe processing equipment, specifically a suspended pipe outer wall drying device and its operating method. Background Technology

[0002] Existing steel pipe external wall cleaning typically includes three steps: degreasing, rinsing, and drying. However, most existing steel pipe external wall cleaning equipment is designed for straight steel pipes and is not suitable for curved pipe fittings such as coils. For example, Chinese patent document CN207899817U, authorized on September 25, 2018, entitled "Plastic-lined Steel Pipe External Wall Cleaning Device," discloses a device suitable for cleaning and drying the external wall of pipes. Drying mainly relies on a fixed block with an air blowing pipe on it to blow and dry the pipe's external wall. This blowing and drying method is a common practice, and multiple blowing structures can be set according to the length of the straight pipe to improve efficiency. However, for curved pipe fittings such as coils, due to the varying curvature, specific air blowing structures need to be designed and distributed for each curvature. This operation is obviously complex and cumbersome to adjust, lacking a structure that can adapt to changes in pipe curvature for drying. Therefore, existing pipe outer wall drying equipment, especially for curved pipe fittings, needs to be improved. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide a suspended pipe outer wall drying device and its working method, thereby solving the technical problems of existing similar pipe outer wall drying devices having complex structures, being inconvenient to use, and being unable to adapt to curved pipe outer walls to achieve drying functions. This objective is achieved through the following technical solution.

[0004] A suspended pipe outer wall drying device includes a main drying head and at least one auxiliary drying head. The key structural feature is that both the main and auxiliary drying heads have through holes adapted for the pipe to be dried. Near the through holes, both the main and auxiliary drying heads have nozzles that purge the circumference of the pipe. Both the main and auxiliary drying heads have air inlets communicating with the nozzles. Elastic elements are fixedly connected between the main and auxiliary drying heads, as well as between adjacent auxiliary drying heads. When the main drying head is fixed, the auxiliary drying heads are elastically suspended relative to the main drying head, with the through holes facing each other. Through this structure, the auxiliary drying heads can deform springs according to the curvature of the pipe to be cleaned, thus achieving adaptive oscillation adjustment. This provides a wide range of applications, avoids damage or deformation to the pipe, and makes drying convenient and efficient. Furthermore, the number of auxiliary drying heads can be continuously expanded according to actual needs, further improving the drying effect and efficiency.

[0005] The elastic element is a spring. Each of the main and auxiliary drying heads has at least two air inlet connectors, with one of each connector facing upwards. These two upward-facing air inlets are connected by a flexible bypass pipe. The spring is sleeved on the outside of the bypass pipe, and its two ends are fixed to the two upward-facing air inlets. This structure allows for a bypass connection between the main and auxiliary drying heads, facilitating air supply. Furthermore, placing the elastic element on the bypass pipe provides both support and protection for the bypass pipe and provides elastic suspension support for the auxiliary drying head.

[0006] The main drying head includes a fixed base and a movable sleeve. The fixed base includes an end cap and a base, which are threaded together, forming an annular groove. The movable sleeve has outwardly turned annular flanges at both ends, and is placed within the annular groove. The annular flanges at both ends of the movable sleeve form a planar sealing sliding with the annular walls on both sides of the annular groove, and the outer diameter of the annular flanges is smaller than the inner diameter of the annular walls on both sides of the annular groove, meaning the movable sleeve moves radially relative to the annular groove. An inner cavity communicating with the air inlet joint is formed between the movable sleeve and the annular groove. The sleeve hole of the movable sleeve serves as a through hole for the main drying head, and one end of the sleeve hole is a conical hole for guiding the pipe fitting in. The conical hole has nozzles arranged along the annular conical surface that communicate with the inner cavity. This structure is a specific implementation of the main drying head, in which the movable sleeve effectively guides the pipe fitting while being able to move freely radially, thus adapting to changes in the curvature of the pipe fitting, minimizing the impact on the curvature of the pipe fitting, and maintaining the curvature state of the pipe fitting itself.

[0007] The main drying head, auxiliary drying head, and elastic element are detachably connected. This structure allows for easy adjustment or replacement of the elastic element as needed.

[0008] The elastic element is a spring with a diameter larger than that of the pipe fitting. Flanges are welded to both ends of the spring. One side of the main drying head, and one or both sides of the auxiliary drying head, form end faces that mate with the flanges. The flanges are locked and fixed to the corresponding end faces using bolts. After locking, both ends of the spring are coaxial with the through holes of the main and auxiliary drying heads. This structure is a specific implementation of the elastic element, and the connection is relatively convenient and quick.

[0009] The elastic element is at least one spring sheet, which is initially arc-shaped. Both ends of the spring sheet are locked and fixed to the main drying head and the auxiliary drying head by bolts. This structure is a specific implementation of the elastic element, which can also achieve elastic suspension support for the auxiliary drying head.

[0010] When the end cap and the base are threaded together, a clamping groove is formed between the end cap and the base in the circumferential direction. This structure facilitates the clamping and fixing of the main drying head and the external support structure.

[0011] The inlet end of the end cap forms a tapered guide hole, with the smaller end of the tapered guide hole facing the larger end of the tapered hole of the movable sleeve. This structure provides better guidance for the pipe fittings entering the main drying head through the through hole.

[0012] The auxiliary drying head includes a sleeve seat and a cover seat. The sleeve seat and the cover seat are sealed together, and an annular inner cavity is formed inside the sleeve seat, communicating with the air inlet of the auxiliary drying head. The inner hole of the sleeve seat serves as the through hole of the auxiliary drying head, and one end of the inner hole is a tapered hole for guiding the pipe fitting in. The tapered hole has nozzles arranged in an array along the annular conical surface, communicating with the annular inner cavity. This structure is a specific implementation of the auxiliary drying head, and the overall structure is relatively simple and easy to assemble and use.

[0013] The working method of this suspended pipe outer wall drying device is as follows: the main drying head is fixed, and the air inlet connectors of the main drying head and the auxiliary drying head are connected to an external drying air source. The pipe to be dried is inserted through the through hole of the main drying head and passes through the through holes of each auxiliary drying head in sequence, and extends out through the through hole of the end auxiliary drying head. As the pipe is conveyed, the drying air source blows the outer wall of the pipe through the nozzles of the main drying head and the auxiliary drying head, thereby achieving the drying treatment of the outer wall of the pipe. When the pipe is curved, the auxiliary drying head drives the elastic element to deform and follow the curvature of the pipe, that is, the auxiliary drying head forms an adaptive angle adjustment relative to the outer wall of the pipe. After the pipe is dried, each auxiliary drying head is reset to be opposite to the through hole of the main drying head under the action of the corresponding elastic element.

[0014] This invention employs a drying head structure with one end fixed and the other end suspended, thereby achieving an adaptive curvature effect on the outer wall of the drying pipe. This makes drying more convenient and efficient. Furthermore, by expanding the drying head structure, the drying effect and efficiency can be further improved. It is suitable for various pipes, especially for drying the outer wall of curved pipes, or for improving similar device structures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention, in which the dashed lines represent the internal structure.

[0016] Figure 2 yes Figure 1 A schematic diagram of the internal cross-sectional structure.

[0017] Figure 3 yes Figure 1 A schematic diagram of the improved scheme.

[0018] Figure 4 yes Figure 1Schematic diagram of the improved scheme two.

[0019] Figure 5 yes Figure 1 A schematic diagram of the extended usage scheme.

[0020] Figure 6 yes Figure 1 A schematic diagram of the usage state structure.

[0021] The numbers and names in the diagram are as follows: 1. Main drying head, 101. Base, 102. End cap, 103. Conical guide hole, 104. Movable sleeve, 1041. Sleeve hole, 1042. Annular flange, 105. Annular groove, 106. Clamping groove, 2. Secondary drying head, 201. Sleeve hole seat, 2011. Inner hole, 202. Cover seat, 203. Annular inner cavity, 3. Spring, 4. Nozzle, 5. Air inlet connector, 6. Spring, 7. Bypass pipe, 8. Fittings. Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] like Figure 1 , Figure 2 As shown, the suspended pipe outer wall drying device includes a main drying head 1 and at least one auxiliary drying head 2. Both the main drying head and the auxiliary drying head are provided with through holes adapted for the pipe fitting 8 to be dried. Both the main drying head and the auxiliary drying head are provided with nozzles 4 near the through holes to purge the circumference of the pipe fitting. Both the main drying head and the auxiliary drying head are provided with air inlet connectors 5 communicating with the nozzles. Elastic elements are fixedly connected between the main drying head and the auxiliary drying head, as well as between two adjacent auxiliary drying heads. When the main drying head is fixed, the auxiliary drying head is in an elastic suspended state relative to the main drying head with the through holes facing each other. The specific structure is as follows: The main drying head includes a fixed base and a movable sleeve 104. The fixed base includes an end cap 102 and a base 101. The end cap and the base are threaded together, and an annular groove 105 is formed between the end cap and the base. The movable sleeve has outwardly turned annular flanges 1042 at both ends. The movable sleeve is placed in the annular groove, and the annular flanges at both ends of the movable sleeve form a planar sealing sliding with the annular walls on both sides of the annular groove. The outer diameter of the annular flanges is smaller than the inner diameter of the annular walls on both sides of the annular groove, that is, the movable sleeve moves radially relative to the annular groove. An inner cavity communicating with the air inlet connector is formed between the movable sleeve and the annular groove. The sleeve hole 1041 of the movable sleeve serves as a through hole for the main drying head. One end of the sleeve hole is a conical hole for the guide tube to enter. The conical hole has nozzles arranged along the annular conical surface that communicate with the inner cavity. When the end cap and the base are threadedly locked, a clamping groove 106 is formed between the end cap and the base in the circumferential direction for clamping the external fixed support plate. The inlet end of the aforementioned end cap forms a tapered guide hole 103. The gradually smaller end of the tapered guide hole is opposite to the gradually larger end of the tapered hole of the movable sleeve, thereby forming a transition guide for the pipe fitting to enter, making the pipe fitting enter the main drying head more smoothly and stably.

[0024] The aforementioned auxiliary drying head 2 includes a sleeve seat 201 and a cover seat 202. The sleeve seat and the cover seat are fixed together by bolts, and a sealing element is provided at the joint of the two to form a sealed combination. After sealing, an annular inner cavity 203 is formed inside, which communicates with the air inlet connector 5 of the auxiliary drying head. The inner hole 2011 of the sleeve seat serves as the through hole of the auxiliary drying head. One end of the inner hole is a conical hole into which the guide tube 8 enters. The conical hole is provided with nozzles 4 that communicate with the annular inner cavity along the annular conical surface.

[0025] The main drying head 1, the auxiliary drying head 2, and the elastic element are detachably connected. Several elastic element options are available.

[0026] Option 1 for elastic components, such as Figure 2 As shown, the elastic element is a spring 3 with a diameter larger than that of the pipe fitting. Flanges are welded to both ends of the spring. One side of the main drying head 1 and both sides of the auxiliary drying head 2 form end faces that mate with the flanges. The flanges are locked and fixed to the corresponding end faces by bolts. After being locked and fixed, the two ends of the spring are coaxial with the through holes of the main drying head and the auxiliary drying head.

[0027] Option 2 for elastic components, such as Figure 3 As shown, the elastic element is at least one spring sheet 6. The spring sheet is initially arc-shaped, and the two ends of the spring sheet are locked and fixed to the main drying head and the auxiliary drying head by bolts.

[0028] Option 3 for elastic components, such as Figure 4 As shown, the elastic element is a spring 3. The main drying head 1 and the auxiliary drying head 2 are each provided with at least two air inlet connectors 5. One of the air inlet connectors of the main drying head and the auxiliary drying head is in the upward state. The two air inlet connectors in the upward state are connected by a flexible bypass pipe 7. The spring is sleeved on the outside of the bypass pipe, and the two ends of the spring are fixed with the two air inlet connectors in the upward state by interference fit.

[0029] like Figure 5 As shown, multiple auxiliary drying heads 2 can also be extended and connected behind the main drying head 1, thereby improving the drying effect and efficiency.

[0030] like Figure 6As shown, the drying method of this suspended pipe outer wall drying device is as follows: The main drying head 1 is clamped and fixed to the pre-drilled support plate through the end cap 102 and the base 101. The air inlet connectors 5 of the main drying head and the auxiliary drying head are connected to an external drying air source (hot air blower), or one air inlet connector of the main drying head is connected to an external drying air source, and the other air inlet connector is connected to one air inlet connector of the auxiliary drying head through a bypass pipe 7. The pipe to be dried 8 is inserted through the through hole of the main drying head and extends out through the through hole of the auxiliary drying head. As the pipe is conveyed, the drying air source blows the outer wall of the pipe through the nozzles of the main drying head and the auxiliary drying head, thereby achieving the drying treatment of the outer wall of the pipe. When the pipe is curved, the auxiliary drying head drives the spring 3 to deform and follow the curvature of the pipe, that is, the auxiliary drying head forms an adaptive angle adjustment relative to the outer wall of the pipe. After the pipe is dried, the auxiliary drying head returns to the position opposite to the through hole of the main drying head under the action of the corresponding spring.

[0031] The above description is intended to illustrate the technical means of the present invention and is not intended to limit the scope of the invention. Any obvious improvements or substitutions made to the present invention by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of the present invention.

Claims

1. A suspended pipe outer wall drying device, the drying device comprising a main drying head (1) and at least one auxiliary drying head (2), characterized in that... Both the main drying head (1) and the auxiliary drying head (2) are provided with through holes adapted to the pipe fittings to be dried. Both the main drying head and the auxiliary drying head are provided with nozzles (4) near the through holes to purge the circumference of the pipe fittings (8). Both the main drying head and the auxiliary drying head are provided with air inlet connectors (5) communicating with the nozzles. Elastic members are fixedly connected between the main drying head and the auxiliary drying head and between two adjacent auxiliary drying heads. When the main drying head is fixed, the auxiliary drying head is in an elastic suspension state relative to the main drying head with the through holes facing each other. The elastic element is a spring (3). The main drying head and the auxiliary drying head each have at least two air inlet connectors, with one air inlet connector in each head facing upwards. These two upward-facing air inlets are connected by a flexible bypass pipe (7). The spring is sleeved around the bypass pipe, and both ends of the spring are fixed to the two upward-facing air inlets. The main drying head includes a fixed base and a movable sleeve (104). The fixed base includes an end cap (102) and a base (101). The end cap and the base are threaded together, and an annular groove (105) is formed between the end cap and the base. The movable sleeve has outwardly turned annular flanges (1042) at both ends. The movable sleeve is placed in the annular groove. The annular flanges at both ends of the movable sleeve form a planar sealing sliding with the annular walls on both sides of the annular groove. The outer diameter of the annular flanges is smaller than the inner diameter of the annular walls on both sides of the annular groove, that is, the movable sleeve moves radially relative to the annular groove. An inner cavity communicating with the air inlet joint is formed between the movable sleeve and the annular groove. The sleeve hole (1041) of the movable sleeve serves as the through hole of the main drying head. One end of the sleeve hole is a conical hole for guiding the pipe fitting in. The conical hole is provided with nozzles communicating with the inner cavity along the annular conical surface.

2. The suspended tube outer wall drying device according to claim 1, characterized in that... The main drying head (1), the auxiliary drying head (2), and the elastic element are detachably connected.

3. The suspended tube outer wall drying device according to claim 2, characterized in that... The elastic element is a spring (3) with a diameter larger than that of the pipe fitting (8). Flanges are welded to both ends of the spring. One side of the main drying head (1) and one or both sides of the auxiliary drying head (2) form end faces that mate with the flanges. The flanges are locked and fixed to the corresponding end faces by bolts. After being locked and fixed, the two ends of the spring are coaxial with the through holes of the main drying head and the auxiliary drying head.

4. The suspended tube outer wall drying device according to claim 2, characterized in that... The elastic element is at least one spring sheet (6). The spring sheet is initially arc-shaped, and the two ends of the spring sheet are locked and fixed to the main drying head (1) and the auxiliary drying head (2) by bolts.

5. The suspended tube outer wall drying device according to claim 1, characterized in that... When the end cap (102) and the base (101) are threaded together, a clamping groove (106) is formed between the end cap and the base in the circumferential direction.

6. The suspended tube outer wall drying device according to claim 1, characterized in that... The end cap (102) has a tapered guide hole (103) at the inlet end, and the smaller end of the tapered guide hole is opposite to the larger end of the tapered hole of the movable sleeve (104).

7. The suspended tube outer wall drying device according to claim 1, characterized in that... The auxiliary drying head (2) includes a sleeve seat (201) and a cover seat (202). The sleeve seat and the cover seat are sealed together and form an annular inner cavity (203) that communicates with the air inlet connector (5) of the auxiliary drying head. The inner hole (2011) of the sleeve seat serves as the through hole of the auxiliary drying head. One end of the inner hole is a conical hole that guides the pipe (8) to enter. The conical hole is provided with nozzles (4) that communicate with the annular inner cavity along the annular conical surface.

8. A method for operating the suspended tube outer wall drying device as described in claim 1, characterized in that... The main drying head (1) is fixed, and the air inlet connectors (5) of the main drying head and the auxiliary drying head (2) are connected to an external drying air source. The pipe to be dried (8) is inserted through the through hole of the main drying head and passes through the through holes of each auxiliary drying head in sequence, and extends out through the through hole of the end auxiliary drying head. As the pipe is transported, the drying air source blows the outer wall of the pipe through the nozzles (4) of the main drying head and the auxiliary drying head, thereby achieving the drying treatment of the outer wall of the pipe. When the pipe is a curved pipe, the auxiliary drying head drives the elastic element to deform and follow the curvature of the pipe, that is, the auxiliary drying head forms an adaptive angle adjustment relative to the outer wall of the pipe. After the pipe is dried, each auxiliary drying head is reset to be opposite to the through hole of the main drying head under the action of the corresponding elastic element.

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