An internal blowing device with a buffering function
By introducing a buffer layer and compression spring structure into the internal blowing device, the problem of hard collisions during pipe transportation is solved, the protection of pipes and docking accuracy are achieved, and the replacement frequency of the buffer layer is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 寿光市职业教育中心学校
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-10
AI Technical Summary
In existing internal blowing devices, during the pipe conveying process, the conveying rollers cause the pipe to collide hard with the internal blowing nozzle, resulting in deformation of the pipe end and damage to the coating or plating.
An internal blowing device with a buffer function was designed, including a nozzle body, a limiting platform, a buffer layer and a compression spring structure. The buffer layer and the limiting platform cooperate to avoid direct hard collision between the pipe and the internal blowing nozzle, and the compression spring is used for buffer protection.
This effectively avoids damage to the pipe ends, reduces the frequency of buffer layer replacement, and ensures accurate connection between the pipes and the internal blowing device and effective utilization of high-pressure gas.
Smart Images
Figure CN224479243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of internal blowing nozzles, specifically to an internal blowing device with a buffer function. Background Technology
[0002] The processing of pipe fittings often requires the use of internal blowing devices. For example, after the pipe fittings enter the water tank for cooling and passivation, the internal blowing device is needed to blow out the medium inside the pipe fittings after they leave the water tank. Another example is in the field of hot immersion treatment, where the inner wall of the pipe fittings also needs to be treated with an internal blowing device.
[0003] Currently, pipe fittings are transported using conveyor rollers. The pipe fittings are then transported to the inner nozzle of the internal blowing device, where high-pressure gas is blown out to complete the internal blowing of the pipe fittings.
[0004] However, the conveying rollers can cause the pipe to collide with the inner nozzle when they come into contact with it. This collision can cause the end of the pipe to deform, and some pipes with coatings or platings may even have their ends knocked off, resulting in defects in the quality of the pipe.
[0005] In view of the problems existing in the prior art, this utility model designs and manufactures an internal blowing device with a buffer function to overcome the above defects. Summary of the Invention
[0006] To address the problems existing in the prior art, this utility model provides an internal blowing device with a buffer function, which can buffer the pipes conveyed by the conveying rollers and avoid hard collisions with the internal blowing nozzles.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an internal blowing device with a buffer function includes a horn mouth body, the small end of the horn mouth body is integrally provided with a tube body, the center of the tube body is provided with an internal blowing channel communicating with the horn mouth body, and the inner wall of the internal blowing channel is provided with an internal thread.
[0008] The inner wall of the small end of the horn mouthpiece is provided with a limiting platform. The maximum outer diameter of the limiting platform is larger than the outer diameter of the pipe to be blown inward. A connecting hole is provided at the limiting platform. The connecting hole is coaxial with the internal blowing channel and connects the internal blowing channel with the horn mouthpiece.
[0009] The limiting platform is provided with a cone extending towards the large end of the horn mouth body near the end of the limiting platform. The cone is coaxial with the connecting hole. The maximum diameter of the cone is smaller than the inner diameter of the pipe to be blown inward. The connecting hole passes through the cone.
[0010] The limiting platform is provided with a buffer layer near the end of the horn mouth body, and the buffer layer is located between the cone and the horn mouth body.
[0011] Preferably, the width of the buffer layer is equal to the distance between the outer end face of the maximum diameter of the frustum and the inner wall of the small end of the horn mouth body.
[0012] Preferably, the buffer layer is a rubber pad, or the buffer layer is a high-temperature resistant rubber pad.
[0013] Preferably, the buffer layer is detachably connected to the limiting platform.
[0014] Preferably, the buffer layer includes a hard rubber pad, and an elastic element is provided between the hard rubber pad and the limiting platform.
[0015] Preferably, the elastic element is a compression spring.
[0016] Preferably, the buffer layer is provided with a plurality of circumferentially distributed axial guide countersunk holes on the side near the limiting platform, and a plurality of circumferentially distributed shoulder screws are provided on the limiting platform at the position corresponding to the axial guide countersunk holes, and the heads of the shoulder screws can slide and guide with the axial guide countersunk holes.
[0017] The buffer layer is detachably connected to a connecting plate on the side near the limiting platform. The connecting plate has several guide holes evenly distributed around its circumference at the position corresponding to the axial guide countersunk hole. The guide holes can slide and guide with the smooth part of the shoulder screw.
[0018] The compression spring is sleeved on the shoulder screw, and the two ends of the compression spring abut against the limiting platform and the connecting plate, respectively.
[0019] Preferably, the outer end face of the buffer layer does not protrude beyond the frustum end face under the action of the compression spring.
[0020] The advantages of this utility model are:
[0021] 1. When the pipe fitting of this utility model needs to be internally blown, when it is conveyed to the internal blowing device by the conveying roller, the end of the pipe fitting can be buffered after colliding with the buffer layer, thus avoiding the damage to the end of the pipe fitting caused by traditional hard collisions.
[0022] 2. The detachable buffer layer can be replaced to prevent damage to the pipe fittings from prolonged collisions, which could affect subsequent internal blowing connections.
[0023] 3. The use of compression springs and guide structures can further protect the buffer layer, allowing the impact of pipe fittings on the buffer layer to be buffered by the compression springs, which helps to reduce the replacement frequency of the buffer layer.
[0024] 4. The buffer layer never protrudes from the truncated cone, ensuring that the fitting is guided by the truncated cone and the bell mouth body, accurately connecting the fitting to the connection port, and also preventing the leakage of high-pressure gas. Attached Figure Description
[0025] Figure 1 A cross-sectional view of an internal blowing device with a buffer function;
[0026] Figure 2 A partial cross-sectional view of an internal blowing device with a buffer function;
[0027] Figure 3 This is a cross-sectional view of an internal blowing device with a buffer function after it is connected to a pipe fitting.
[0028] In the diagram: 1. Horn mouth body; 2. Tube body; 3. Limiting platform; 4. Buffer layer; 5. Axial guide countersunk hole; 6. Connecting plate; 7. Compression spring; 8. Shoulder screw; 9. Frustum. Detailed Implementation
[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0030] like Figures 1 to 3 As shown, an internal blowing device with a buffer function includes a horn mouth body 1. The small end of the horn mouth body 1 is integrally provided with a tube body 2. The center of the tube body 2 is provided with an internal blowing channel that communicates with the horn mouth body 1. The inner wall of the internal blowing channel is provided with internal threads to facilitate connection with a device that provides high-pressure gas.
[0031] The inner wall of the small end of the nozzle body 1 is provided with a limiting platform 3. The maximum outer diameter of the limiting platform 3 is larger than the outer diameter of the pipe to be blown inward. A connecting hole is provided at the limiting platform 3. The connecting hole is coaxial with the internal blowing channel. The connecting hole connects the internal blowing channel with the nozzle body 1. High-pressure gas is injected into the pipe through the connecting hole.
[0032] The limiting platform 3 is provided with a cone 9 extending towards the large end of the horn mouth body 1 near the end of the horn mouth body 1. The cone 9 is coaxial with the connecting hole. The maximum diameter of the cone 9 is smaller than the inner diameter of the pipe to be blown inward. The connecting hole passes through the cone 9. The function of the cone 9 is to facilitate docking and guidance with the pipe.
[0033] The present invention provides a buffer layer 4 near the end of the limiting platform 3 near the horn mouth body 1. The buffer layer 4 is located between the cone 9 and the horn mouth body 1. When the pipe needs to be blown internally, when it is conveyed to the internal blowing device by the conveying roller, the end of the pipe can be buffered after colliding with the buffer layer 4, thus avoiding damage to the end of the pipe caused by traditional hard collisions.
[0034] The width of the buffer layer 4 is equal to the distance between the outer end face of the maximum diameter of the frustum 9 and the inner wall of the small end of the horn mouth body 1. The buffer layer 4 is set as a rubber pad. When facing a hot-dip galvanized layer or a hot-dip coating, the buffer layer 4 is preferably set as a high-temperature resistant rubber pad.
[0035] The buffer layer 4 is preferably detachably connected to the limiting platform 3. The detachably connected buffer layer 4 can be replaced to avoid damage to the pipe fittings after long-term collisions, which would affect the subsequent internal blowing connection of the pipe fittings.
[0036] The buffer layer 4 of this utility model includes a hard rubber pad, and an elastic element is provided between the hard rubber pad and the limiting platform 3. The elastic element is a compression spring 7. Specifically, the buffer layer 4 has a plurality of circumferentially distributed axial guide countersunk holes 5 on the side near the limiting platform 3. The limiting platform 3 has a plurality of circumferentially distributed shoulder screws 8 at the positions corresponding to the axial guide countersunk holes 5. The heads of the shoulder screws 8 can slide and guide with the axial guide countersunk holes 5.
[0037] A connecting plate 6 is detachably connected to the buffer layer 4 near the limiting platform 3. Several guide holes are evenly distributed around the connecting plate 6 at the position corresponding to the axial guide countersunk hole 5. The guide holes can slide and guide with the smooth part of the shoulder screw 8. A compression spring 7 is sleeved on the shoulder screw 8, and the two ends of the compression spring 7 abut against the limiting platform 3 and the connecting plate 6, respectively.
[0038] The above structure utilizes the compression spring 7 and the guide structure to further protect the buffer layer 4, so that the impact of the pipe on the buffer layer 4 is buffered by the compression spring 7, which helps to reduce the replacement frequency of the buffer layer 4.
[0039] The outer end face of the buffer layer 4 of this utility model does not protrude beyond the end face of the cone 9 under the action of the compression spring 7, thus ensuring that the pipe is accurately connected to the connecting port with the cone 9 and the flared mouth body 1 as guides, and also preventing the leakage of high pressure gas.
[0040] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.
Claims
1. An internal blowing device with a buffering function, characterized in that, Includes a horn mouth body (1), the small end of the horn mouth body (1) is integrally provided with a tube body (2), the center of the tube body (2) is provided with an inner blowing channel communicating with the horn mouth body (1), and the inner wall of the inner blowing channel is provided with an internal thread; The inner wall of the small end of the horn mouth body (1) is provided with a limiting platform (3). The maximum outer diameter of the limiting platform (3) is greater than the outer diameter of the pipe to be blown inward. A connecting hole is provided at the limiting platform (3). The connecting hole is coaxial with the internal blowing channel. The connecting hole connects the internal blowing channel with the horn mouth body (1). The limiting platform (3) has a cone (9) extending towards the large end of the horn mouth body (1) near the end of the limiting platform (3). The cone (9) is coaxial with the connecting hole. The maximum diameter of the cone (9) is smaller than the inner diameter of the pipe to be blown inward. The connecting hole passes through the cone (9). The limiting platform (3) is provided with a buffer layer (4) near the end of the horn mouth body (1), and the buffer layer (4) is located between the cone (9) and the horn mouth body (1).
2. The internal blowing device with buffering function according to claim 1, characterized in that, The width of the buffer layer (4) is equal to the distance between the outer end face of the maximum diameter of the frustum (9) and the inner wall of the small end of the horn mouth body (1).
3. The internal blowing device with buffering function according to claim 1, characterized in that, The buffer layer (4) is a rubber pad, or the buffer layer (4) is a high-temperature resistant rubber pad.
4. The internal blowing device with buffering function according to claim 1, characterized in that, The buffer layer (4) is detachably connected to the limiting platform (3).
5. The internal blowing device with buffering function according to claim 1, characterized in that, The buffer layer (4) includes a hard rubber pad, and an elastic element is provided between the hard rubber pad and the limiting platform (3).
6. The internal blowing device with buffering function according to claim 5, characterized in that, The elastic element is configured as a compression spring (7).
7. The internal blowing device with buffering function according to claim 6, characterized in that, The buffer layer (4) has several circumferentially distributed axial guide countersunk holes (5) on the side near the limiting platform (3). The limiting platform (3) has several circumferentially distributed shoulder screws (8) at the corresponding positions of the axial guide countersunk holes (5). The heads of the shoulder screws (8) can slide and guide with the axial guide countersunk holes (5). The buffer layer (4) is detachably connected to a connecting plate (6) on the side near the limiting platform (3). The connecting plate (6) has several guide holes evenly distributed around the circumference corresponding to the axial guide countersunk hole (5). The guide holes can slide and guide with the smooth rod part of the shoulder screw (8). The compression spring (7) is sleeved on the shoulder screw (8), and the two ends of the compression spring (7) abut against the limiting platform (3) and the connecting plate (6) respectively.
8. The internal blowing device with buffering function according to claim 7, characterized in that, The outer end face of the buffer layer (4) does not protrude beyond the end face of the cone (9) under the action of the compression spring (7).