Deformation processing device for ventilation pipeline of air conditioner

Abstract

The invention relates to the technical field of pipeline machining, in particular to an air conditioner ventilation pipeline deformation machining device which comprises an inner piston and an outer piston which are coaxially and oppositely distributed and used for blocking the interior of a metal pipe, and the inner piston and the outer piston are connected through a liquid supply pipe; the metal pipe is externally supported and expanded by using high-pressure fluid, so that the metal pipe is uniformly stressed, the deformation uniformity of the metal pipe is improved, the metal pipe is prevented from being torn and damaged, and friction with the metal pipe is avoided in the deformation processing mode, so that the processing difficulty of the metal pipe can be greatly reduced, the processing mode is improved, and the efficiency is improved; abrasion of the metal pipe is avoided; by means of the inner piston and the outer piston, a sealing interval can be cut out in the metal pipe, so that high-pressure fluid can be conveniently injected into the sealing interval, deformation machining of the metal pipe is only limited in a specific area, and the position of the specific area is adjustable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline processing, in particular to a deformation processing device for air-conditioning ventilation pipeline. BACKGROUND

[0002] In the installation process of the air-conditioning ventilation system, the reliable butt joint of the metal ventilation pipeline is very important. In the traditional process, the end of one of the metal pipes is often expanded to realize the socket joint with another pipe, and then welded and fixed. At present, the widely used expansion method mainly depends on the forced radial extrusion of the hard cylindrical mold. Although this process is direct, it has obvious defects. First, when the wall thickness of the metal pipe is uneven, the uneven stress locally borne is easy to cause the pipe wall to tear or crack, which seriously affects the structural integrity and sealing performance. Second, the huge sliding friction between the mold and the pipe wall not only increases the processing resistance and energy consumption, but also aggravates the scratching and wear of the inner surface of the pipe body, which further weakens the connection strength. These disadvantages reduce the processing yield and efficiency, and also hide the risks of leakage and fatigue failure for the pipeline system. SUMMARY

[0003] The present application provides a deformation processing device for air-conditioning ventilation pipeline, which can effectively solve the problems in the background art.

[0004] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: A deformation processing device for air-conditioning ventilation pipeline, comprising an inner piston and an outer piston which are coaxially and oppositely distributed and are both used for plugging the inside of the metal pipe, the inner piston and the outer piston are connected through a liquid supply pipe, and a plurality of liquid discharge ports for introducing high-pressure fluid into the area between the inner piston and the outer piston are arranged on the outer wall of the liquid supply pipe. A sealing ring is arranged on the inner piston and the outer piston.

[0005] In some embodiments of the present application, one end of the liquid supply pipe is fixedly connected with the inner piston, and the other end of the liquid supply pipe penetrates through the outer piston and can slide relatively.

[0006] In some embodiments of the present application, the outer wall of the sealing ring is circular, the inner wall of the sealing ring is conical, and the opening direction of the conical shape is towards the area between the inner piston and the outer piston.

[0007] In some embodiments of the present application, the sealing ring on the outer piston is composed of a conical part on the inner side and a circular ring part on the outer side. A support sleeve is arranged on the outer piston, the support sleeve is slidably sleeved on the liquid supply pipe, a movable sleeve is slidably sleeved on the outer wall of the support sleeve, and the movable sleeve is connected with the circular ring part.

[0008] In some embodiments of the present application, the processing device further comprises a box, the upper and lower sides of the box are provided with shaping holes, the inner piston and the outer piston are respectively located in the shaping holes, and the inner wall of the shaping hole is used to limit the outer diameter of the metal pipe passing through the shaping hole.

[0009] In some embodiments of the present application, a sub-pipe for introducing high-pressure fluid into the inside of the box is arranged on the outer wall of the box.

[0010] In some embodiments of the present application, the box comprises a movable box and a fixed box arranged in an up-down manner, a connecting rail is arranged on the fixed box, the movable box is vertically slidably buckled on the connecting rail, and the distance between the fixed box and the movable box is adjustably arranged. The support sleeve is fixedly connected with the fixed box through a connecting frame one, and the liquid supply pipe is fixedly connected with the movable box through a connecting frame two.

[0011] In some embodiments of the present application, a discharging port is arranged on the movable box, a sealing disc is arranged in the discharging port, the sealing disc is composed of a plurality of sealing plates, an opening is arranged on each of the sealing plates, and the openings of the plurality of sealing plates form a shaping hole.

[0012] In some embodiments of the present application, the shape of the discharging port is a taper shape towards the inside of the box, and the shape of the sealing disc corresponds to the shape of the discharging port.

[0013] In some embodiments of the present application, the sealing plate is rotatably arranged on the movable box through a rotating arm, and the rotating connection position of the rotating arm and the movable box is higher than the top of the movable box.

[0014] The present application has the following beneficial effects: By using high-pressure fluid to externally expand the metal pipe, the stress of the metal pipe can be uniformly distributed, the uniformity of the deformation of the metal pipe can be improved, and the metal pipe can be prevented from being torn and damaged. In addition, the deformation processing method does not generate friction with the metal pipe, so that the processing difficulty of the metal pipe can be greatly reduced, the processing mode can be improved, the efficiency can be improved, and the metal pipe can be prevented from being abraded. By using the inner piston and the outer piston, a sealed interval can be intercepted in the metal pipe, so that the high-pressure fluid can be injected into the sealed interval, the deformation processing of the metal pipe is limited in a specific area, and the position of the specific area can be adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0016] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a sectional structural schematic diagram of Figure 1 ; Figure 3 is a sectional structural schematic diagram of the outer piston in Figure 2 ; Figure 4 is a sectional structural schematic diagram of the outer piston in Figure 3 ; Figure 5 is a sectional structural schematic diagram of the outer piston in Figure 2 ;

[0017] Reference signs: 100, inner piston; 200, outer piston; 201, support sleeve; 202, movable sleeve; 300, liquid supply pipe; 301, liquid discharge port; 400, sealing ring; 401, conical part; 402, circular ring part; 500, sealing box; 501, shaped hole; 502, auxiliary pipe; 503, fixed box; 504, movable box; 505, connecting edge; 506, connecting frame one; 507, connecting frame two; 508, connecting arm; 509, buckle groove plate; 510, sealing plate; 511, rotating arm; 512, sliding column; 513, elastic body; 514, adjusting frame; 515, auxiliary arm; 516, side plate. DETAILED DESCRIPTION

[0018] The specific embodiments of the present application will be further described in detail below in combination with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0019] As shown in Figure 3 , an air conditioner air exchange pipeline deformation processing device of the present application comprises an inner piston 100 and an outer piston 200 coaxially and oppositely distributed and both used for plugging the inside of a metal pipe, the inner piston 100 and the outer piston 200 are connected through a liquid supply pipe 300, and a plurality of liquid discharge ports 301 for passing high-pressure fluid into the area between the inner piston 100 and the outer piston 200 are arranged on the outer wall of the liquid supply pipe 300; A sealing ring 400 is provided on both the inner piston 100 and the outer piston 200.

[0020] Specifically, the inner piston 100 and the outer piston 200 are coaxially arranged. When both the inner piston 100 and the outer piston 200 are installed inside the metal tube, the sealing effect of the inner piston 100 and the outer piston 200 on the metal tube can form an independent and sealed space in a part of the metal tube area between the inner piston 100 and the outer piston 200. When high-pressure fluid is introduced into this space, the fluid will exert external pressure on the metal tube, causing the metal tube to expand and deform, and the inner diameter of the metal tube to increase. At this time, the sealing work of the inner piston 100 and the outer piston 200 on the metal tube can effectively limit the leakage of fluid. This method of using fluid to expand the metal tube can make the metal tube bear force evenly, without friction deformation and damage. The liquid supply pipe 300 can be used to connect the inner piston 100 and the outer piston 200. At the same time, the liquid supply pipe 300 can be connected to an external fluid delivery pipeline. In this way, fluid can be introduced into the space between the inner piston 100 and the outer piston 200 through the liquid supply pipe 300 and several drain ports 301. The high-pressure fluid can be water, oil, etc.

[0021] In some embodiments, to improve the sealing between the inner wall of the metal tube and the inner piston 100 and the outer piston 200, sealing rings 400 can be provided on both the inner piston 100 and the outer piston 200.

[0022] After the metal tube has expanded and deformed, the metal tube between the inner piston 100 and the outer piston 200 is the expansion zone. The dimensions of the metal tubes corresponding to the inner piston 100 and the outer piston 200 remain unchanged. To facilitate the subsequent interpenetration of the two metal tubes, the expansion zone can be cut off by a cutting machine or other cutting structure to make it easier to remove one end of the expansion zone, so that the expansion zone forms the shape of an enlarged hole in the metal tube. Specifically, since the outer piston 200 is located at the end of the metal tube, the part of the metal tube corresponding to the outer piston 200 can be cut off.

[0023] Since the high-pressure fluid only applies pressure to the inside of the metal tube, in order to improve the uniformity of the metal tube's deformation and make the expansion zone form a regular cylindrical shape, a shaping tube can be placed on the outside of the metal tube. When the metal tube expands and comes into contact with the inner wall of the shaping tube, the metal tube at the contact point will no longer deform, while other areas that have not yet come into contact will continue to deform until the expansion zone of the metal tube comes into contact with the inner wall of the shaping tube.

[0024] By using high-pressure fluid to externally support and expand the metal pipe, the metal pipe can be conveniently subjected to uniform stress, the uniformity of deformation of the metal pipe can be improved, and the metal pipe can be prevented from being torn and damaged, and meanwhile, the deformation processing mode does not generate friction with the metal pipe, so that the metal pipe processing difficulty can be greatly reduced, the processing mode can be improved, the efficiency can be improved, and the metal pipe can be prevented from being abraded; by using the inner piston 100 and the outer piston 200, a sealed interval can be intercepted in the metal pipe, so that the high-pressure fluid can be conveniently injected into the sealed interval, and the deformation processing of the metal pipe is limited in a specific region, and the position of the specific region can be adjusted.

[0025] In some embodiments of the present application, one end of the liquid supply pipe 300 is fixedly connected with the inner piston 100, and the other end of the liquid supply pipe 300 passes through the outer piston 200 and can slide relative to the outer piston 200.

[0026] When it is required to process an expansion zone with different lengths, the outer piston 200 can be slid relative to the liquid supply pipe 300, so as to adjust the distance between the inner piston 100 and the outer piston 200, and the expansion hole depth can be conveniently adjusted.

[0027] In some embodiments of the present application, the outer wall of the sealing ring 400 is circular, the inner wall of the sealing ring 400 is conical, and the opening direction of the conical surface is towards the space between the inner piston 100 and the outer piston 200.

[0028] When the sealing ring 400 is in contact with the inner wall of the metal pipe, the pressure of the high-pressure fluid on the sealing ring 400 acts on the conical surface of the inner wall, at this time, the high-pressure fluid can assist in pushing the sealing ring 400 and the metal pipe to be more closely attached to each other, so that the sealing ring 400 provides more effective sealing effect for the metal pipe, that is, the higher the pressure of the high-pressure fluid, the better the sealing performance of the sealing ring 400.

[0029] In some embodiments of the present application, as shown in Figure 4 the sealing ring 400 on the outer piston 200 is composed of a conical portion 401 located on the inner side and a circular ring portion 402 located on the outer side; A support sleeve 201 is arranged on the outer piston 200, the support sleeve 201 is slidably sleeved on the liquid supply pipe 300, an active sleeve 202 is slidably sleeved on the outer wall of the support sleeve 201, and the active sleeve 202 is connected with the circular ring portion 402.

[0030] In a natural state, the circular ring portion 402 and the active sleeve 202 are located on the same cylindrical surface, when the outer piston 200 is loaded into the metal pipe, due to the shape characteristics of the sealing ring 400, the sealing ring 400 is easy to interfere with the end of the metal pipe, which increases the loading difficulty, at this time, the active sleeve 202 can be pushed to slide on the support sleeve 201, and the conical portion 401 is pushed to be concave inward by the active sleeve 202 and the circular ring portion 402, that is, as shown in Figure 4The connection position of the circular ring part 402 and the conical part 401 is deformed inward, the outer wall of the circular ring part 402 is changed from a cylindrical shape to an arc shape, and the sealing ring 400 is deformed to be necked, so that the sealing ring 400 can be smoothly loaded into the metal pipe; since the loading mode of the inner piston 100 into the metal pipe does not interfere with the shape of the sealing ring 400 thereon, the loading difficulty of the inner piston 100 is relatively small, and any structure conforming to the shape of the sealing ring 400 can be used.

[0031] In some embodiments of the present application, as shown in Figure 1 and Figure 2 The processing device further includes a box 500, and the upper and lower sides of the box 500 are provided with shaped holes 501, and the inner piston 100 and the outer piston 200 are located in the two shaped holes 501 respectively, and the inner wall of the shaped hole 501 is used to limit the outer diameter of the metal pipe passing through the shaped hole 501.

[0032] The gap between the inner piston 100 and the corresponding shaped hole 501 and the gap between the outer piston 200 and the corresponding shaped hole 501 are used to insert the metal pipe, that is, when the metal pipe passes through the box 500, the outer wall of the metal pipe will contact the inner wall of the shaped hole 501, at this time, the shaped hole 501 performs shaping treatment on the outer wall of the corresponding position of the metal pipe, and the inner piston 100 and the outer piston 200 in the shaped hole 501 are synchronously loaded into the metal pipe, so that the inner and outer walls of the metal pipe can be shaped by the inner wall of the shaped hole 501 and the inner piston 100 or the outer piston 200, avoiding the high-pressure fluid causing the metal pipe corresponding to the inner piston 100 or the outer piston 200 to be extruded and deformed, so that the inner wall of the metal pipe is separated from the inner piston 100 or the outer piston 200, causing the high-pressure fluid to leak, and the deformation area of the metal pipe is limited between the two shaped holes 501 in the box 500.

[0033] One end of the metal pipe passes through the two shaped holes 501, and the inner piston 100 and the outer piston 200 are sent into the metal pipe through the end of the metal pipe.

[0034] In some embodiments of the present application, as shown in Figure 1 A sub-pipe 502 for introducing high-pressure fluid into the box 500 is arranged on the outer wall of the box 500; the external high-pressure fluid can be introduced into the box 500 through the sub-pipe 502, at this time, the high-pressure fluid in the box 500 can extrude the outer wall of the metal pipe, so that the inner and outer walls of the metal pipe are extruded by the high-pressure fluid, when the internal pressure of the metal pipe is higher than the external pressure, the metal pipe expands, at this time, based on the external pressure of the metal pipe, the deformation force of the metal pipe is changed from pure tensile stress to combined shear stress, which greatly reduces the risk of rupture and improves the uniformity of deformation.

[0035] In some embodiments of the present application, as shown in Figure 1As shown, the sealing box 500 comprises the movable box 504 and the fixed box 503 arranged in an up-down manner, the fixed box 503 is provided with the connecting edge 505, the movable box 504 is slidably buckled on the connecting edge 505 in the vertical direction, and the distance between the fixed box 503 and the movable box 504 is adjustably arranged. The support sleeve 201 is fixedly connected with the fixed box 503 through the connecting frame one 506, and the liquid supply pipe 300 is fixedly connected with the movable box 504 through the connecting frame two 507.

[0036] Since the distance between the inner piston 100 and the outer piston 200 is adjustable, the overall length of the sealing box 500 also needs to be adjustable, specifically, when the movable box 504 slides on the connecting edge 505, the distance between the movable box 504 and the fixed box 503 changes, and the fixed box 503, the movable box 504 and the connecting edge 505 always form a complete closed chamber, the shaped hole 501 on the fixed box 503 can always correspond to the outer piston 200, and the shaped hole 501 on the movable box 504 can always correspond to the inner piston 100.

[0037] The connecting frame one 506 and the connecting frame two 507 can connect the outer piston 200 and the inner piston 100 with the fixed box 503 and the movable box 504 respectively, and when the fixed box 503 and the movable box 504 relatively move, the inner piston 100 and the outer piston 200 synchronously relatively move.

[0038] As shown in the drawings, Figure 1 a plurality of connecting arms 508 are arranged on the movable box 504, the connecting arms 508 are provided with a plurality of clamping grooves, a plurality of clamping groove plates 509 are arranged on the fixed box 503 corresponding to the connecting arms 508, the clamping groove plates 509 are provided with clamping edges matched with the clamping grooves, when the clamping groove plates 509 are buckled on the connecting arms 508 and combined with each other, the fixed box 503 and the movable box 504 are connected together and relatively fixed, the clamping groove plates 509 can be fastened on the fixed box 503 by bolts, when it is needed to adjust the distance between the fixed box 503 and the movable box 504, the clamping groove plates 509 can be disassembled, and the movable box 504 can be moved; it should be noted that the fixed box 503 can be directly installed on an external base, a fixing frame or the like, and the fixed box 503 supports the movable box 504.

[0039] In some embodiments of the present application, as shown in Figure 2 and Figure 5 a discharging port is formed in the movable box 504, and the discharging port is provided with a sealing disc, the sealing disc is composed of a plurality of sealing plates 510, the sealing plates 510 are all provided with apertures, and the apertures of the sealing plates 510 form the shaped hole 501.

[0040] When the metal pipe in the sealing box 500 is deformed, the outer diameter of the metal pipe increases, at this time, the metal pipe cannot be directly pulled out through the shaping hole 501, a plurality of sealing plates 510 can be disassembled, and the metal pipe can be removed through the discharge port with a larger inner diameter.

[0041] In some embodiments of the present application, the shape of the discharge port is a taper towards the inside of the sealing box 500, and the shape of the sealing disc is correspondingly arranged with the shape of the discharge port.

[0042] When high-pressure fluid is introduced into the sealing box 500, the high-pressure fluid will generate an outward pushing force on the sealing disc, at this time, the shape characteristics of the discharge port and the sealing disc can make the outer wall of the sealing disc fit more closely with the tapered inner wall of the discharge port, thereby improving the sealing effect, and the discharge port can block the sealing disc to prevent it from moving directly outside the sealing box 500 when subjected to the action of high-pressure fluid.

[0043] In some embodiments of the present application, as shown in Figure 5 The sealing plate 510 is rotatably arranged on the movable box 504 through the rotating arm 511, and the rotating connection position of the rotating arm 511 and the movable box 504 is higher than the top of the movable box 504.

[0044] When a plurality of sealing plates 510 are abutted, in order to make the adjacent two sealing plates 510 form a face contact mode, increase the contact area and improve the sealing performance, the rotating axis of the sealing plate 510 can be specially set, that is, the rotating connection position of the rotating arm 511 and the movable box 504 is higher than the top of the movable box 504, so that the sealing plate 510 always moves in the lower region of the horizontal plane of the rotating axis, which facilitates the direct face contact between the adjacent two sealing plates 510.

[0045] Since the force of the high-pressure fluid in the sealing box 500 on the sealing disc makes it fit more closely with the discharge port, the sealing plate 510 needs to have a small range of movement function based on the support of the rotating arm 511, specifically, as shown in Figure 5 The sliding column 512 is slidably inserted into the rotating arm 511, the sliding column 512 is connected with the sealing plate 510, and the sliding column 512 is connected with the rotating arm 511 through the elastic body 513, so that in the natural state, the elastic body 513 can limit the relative position of the sealing plate 510 and the rotating arm 511 through the sliding column 512, and the rotating arm 511 can directly drive the sealing plate 510 to move, when the high-pressure fluid acts on the sealing plate 510, the sealing plate 510 can overcome the elastic force of the elastic body 513 through the sliding column 512 and move a small range, and the sealing plate 510 fits more closely with the inner wall of the discharge port.

[0046] In order to realize the synchronous opening and closing function of a plurality of sealing plates 510, as shown in Figure 1 and Figure 5As shown, the top of the active box 504 is provided with a side plate 516, and a regulating frame 514 is slidingly arranged on the side plate 516. The regulating frame 514 is rotationally connected with each rotating arm 511 through a plurality of auxiliary arms 515. When the regulating frame 514 moves, it will push the rotating arms 511 to rotate through the auxiliary arms 515, thereby driving the sealing plates 510 to move synchronously. Of course, the regulating frame 514 can be fastened on the side plate 516 by bolts.

[0047] The above is only the preferred embodiment of the present application. It should be noted that those skilled in the art can make some improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A deformation processing device for air conditioning ventilation ducts, characterized in that, It includes an inner piston and an outer piston that are coaxially distributed and both used to seal the inside of a metal tube. The inner piston and the outer piston are connected by a liquid supply pipe, and a number of discharge ports are provided on the outer wall of the liquid supply pipe for introducing high-pressure fluid into the area between the inner piston and the outer piston. A sealing ring is provided on both the inner piston and the outer piston.

2. The air conditioning ventilation duct deformation processing device according to claim 1, characterized in that, One end of the liquid supply pipe is fixedly connected to the inner piston, and the other end of the liquid supply pipe passes through the outer piston and can slide relative to it.

3. The air conditioning ventilation duct deformation processing device according to claim 2, characterized in that, The outer wall of the sealing ring is circular, and the inner wall of the sealing ring is conical, with the opening of the conical shape facing between the inner piston and the outer piston.

4. The air conditioning ventilation duct deformation processing device according to claim 3, characterized in that, The sealing ring on the outer piston consists of a conical portion on the inner side and a circular portion on the outer side; A support sleeve is provided on the outer piston, and the support sleeve is slidably sleeved on the liquid supply pipe. A movable sleeve is slidably sleeved on the outer wall of the support sleeve, and the movable sleeve is connected to the annular part.

5. The air conditioning ventilation duct deformation processing device according to claim 4, characterized in that, The processing device also includes a sealing box, which has shaping holes on both the upper and lower sides. The inner piston and the outer piston are respectively located in the two shaping holes. The inner wall of the shaping hole is used to limit the outer diameter of the metal tube passing through the shaping hole.

6. The air conditioning ventilation duct deformation processing device according to claim 5, characterized in that, A secondary pipe for introducing high-pressure fluid into the interior of the sealing box is provided on the outer wall of the sealing box.

7. The air conditioning ventilation duct deformation processing device according to claim 6, characterized in that, The sealing box includes a movable box and a fixed box distributed vertically. A connecting edge is provided on the fixed box. The movable box is slidably fastened to the connecting edge in the vertical direction. The distance between the fixed box and the movable box is adjustable. The support sleeve is fixed to the fixed box via a connecting frame one, and the liquid supply pipe is fixed to the movable box via a connecting frame two.

8. The air conditioning ventilation duct deformation processing device according to claim 7, characterized in that, The movable box is provided with a discharge port, and a sealing plate is provided inside the discharge port. The sealing plate is composed of several sealing plates joined together. Each sealing plate has a notch, and the notches on the sealing plates form a shaping hole.

9. The air conditioning ventilation duct deformation processing device according to claim 8, characterized in that, The discharge port is cone-shaped and faces inward towards the inside of the sealing box, and the shape of the sealing plate corresponds to the shape of the discharge port.

10. The air conditioning ventilation duct deformation processing device according to claim 9, characterized in that, The sealing plate is rotatably mounted on the movable box via a rotating arm, and the rotating connection position of the rotating arm and the movable box is higher than the top of the movable box.

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