A high-pressure resistant connection device

Abstract

This invention relates to the field of welding robot installation technology, and provides a high-pressure resistant connection device, including a fixed pipe and a high-pressure nozzle, as well as a transmission component and a balancing component. Both the transmission component and the balancing component are installed on the inner wall of the fixed pipe. A first flange and a second flange are fixedly connected to the outer sides of the fixed pipe and the high-pressure nozzle, respectively. The first flange and the second flange are connected to each other by bolts. The inner wall of the high-pressure nozzle is engaged with one side of the transmission component, and the other side of the transmission component is engaged with the balancing component. The end of the balancing component is inserted into the inner wall of the high-pressure nozzle. The design of the mutual cooperation between the transmission component and the balancing component facilitates the installation of the high-pressure nozzle onto the fixed pipe. Furthermore, when the high-pressure medium generated in the high-pressure pump body is blown towards the high-pressure nozzle through the fixed pipe, it increases the resistance to the high-pressure nozzle sliding away from the fixed pipe. This device features strong high-pressure resistance, simple structure, and ease of installation of the high-pressure nozzle.

Description

Technical Field

[0001] This invention relates to the field of high-pressure pump technology, specifically to a high-pressure resistant connecting device. Background Technology

[0002] When the high-pressure medium (liquid or gas) generated in the high-pressure pump is blown towards the high-pressure nozzle through the delivery pipe, the flowing high-pressure medium will exert an axial force on the high-pressure nozzle away from the fixed pipe due to the small diameter of the nozzle at the tail end of the high-pressure nozzle.

[0003] Existing high-pressure resistant connection devices are generally flange structures, which are fixed by fastening bolts. However, the axial force generated by high pressure can easily reduce the service life of the fastening bolts, and the fastening bolts are prone to stripping, which in turn can lead to the high-pressure nozzle falling off. Summary of the Invention

[0004] The purpose of this invention is to provide a high-pressure resistant connection device, which aims to solve the problem of poor high-pressure resistance when using an existing high-pressure resistant connection device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-pressure resistant connection device, comprising a fixed pipe and a high-pressure nozzle, and further comprising a transmission assembly and a balancing assembly. The transmission assembly and the balancing assembly are both installed on the inner wall of the fixed pipe. A first flange and a second flange are respectively fixedly connected to the outer sides of the fixed pipe and the high-pressure nozzle. The first flange and the second flange are connected to each other by bolts. The inner wall of the high-pressure nozzle is engaged with one side of the transmission assembly, and the other side of the transmission assembly is engaged with the balancing assembly. The end of the balancing assembly is inserted into the inner wall of the high-pressure nozzle.

[0006] As a further embodiment of the present invention, the transmission assembly includes a transmission gear, a rotating shaft, and a reset part. The reset part is fixedly connected to the inner wall of the fixed tube. One end of the rotating shaft is installed on the inner wall of the fixed tube, and the other end is movably sleeved in the reset part. The transmission gear is fixedly sleeved on the rotating shaft. The balancing assembly and the inner wall of the high-pressure nozzle are both meshed with the transmission gear.

[0007] As a further embodiment of the present invention, the balancing assembly includes a rack plate, a fixing block and a limiting plate, the transmission gear meshing with the rack plate, the rack plate being installed on the inner wall of the fixing pipe, the fixing block being fixedly connected to the end of the rack plate, one end of the limiting plate being movably sleeved inside the fixing block, and the other end being inserted into the inner wall of the high-pressure nozzle.

[0008] As a further embodiment of the present invention, a toothed groove is provided on the inner wall of the high-pressure nozzle near the port, the transmission gear meshes with the toothed groove, and a boss is fixedly connected to the inner wall of the high-pressure nozzle away from the toothed groove. A limiting hole is provided on the surface of the boss, and the limiting plate is inserted into the limiting hole.

[0009] As a further embodiment of the present invention, the reset part includes a fixed housing and a coil spring, the rotating shaft and the coil spring are installed inside the fixed housing, and the coil spring is movably sleeved on the outside of the rotating shaft.

[0010] As a further embodiment of the present invention, the balancing assembly further includes a stop block and a return spring. A groove is formed on one end of the fixed block near the inner wall of the high-pressure nozzle. The stop block is slidably connected within the groove. A limiting plate is installed on the side wall of the stop block. The return spring is connected between the stop block and the groove, and is movably sleeved on the outside of the limiting plate. When the high-pressure nozzle needs to be installed onto the fixed pipe, first align the toothed groove on the inner wall of the high-pressure nozzle with the transmission gear, and then slowly push the high-pressure nozzle. The linearly moving toothed groove can overcome the elastic force of the coil spring. The rotating transmission gear drives the rack plate to move linearly in the opposite direction to the high-pressure nozzle. When the limiting plate at the end of the rack plate contacts the boss on the inner wall of the high-pressure nozzle, the squeezing force between the two can overcome the elastic force of the return spring due to the inclined surface design of the limiting plate side wall, causing the limiting plate to retract until the limiting plate is aligned with the limiting hole on the surface of the boss. At this point, the elastic force of the return spring will drive the limiting plate to slide into the limiting hole. The axial limiting of the limiting hole can prevent the high-pressure nozzle from falling off the fixed pipe, allowing it to withstand greater axial pressure.

[0011] As a further embodiment of the present invention, the inner wall of the fixed tube is provided with a mounting hole and a axial guide rail, the mounting hole and the axial guide rail are interconnected, the transmission component is installed in the mounting hole, and the rack plate is slidably connected in the axial guide rail.

[0012] In summary, the beneficial effects of the present invention are: the design of the transmission component and the balance component working together facilitates the installation of the high-pressure nozzle onto the fixed pipe, and when the high-pressure medium generated in the high-pressure pump body is blown toward the high-pressure nozzle through the fixed pipe, it can increase the resistance of the high-pressure nozzle sliding away from the fixed pipe. It has the characteristics of strong high-pressure resistance, simple structure and easy installation of high-pressure nozzle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a high-pressure resistant connection device according to an embodiment of the present invention.

[0014] Figure 2 This is a perspective view of the fixing tube in an embodiment of the present invention.

[0015] Figure 3This is a perspective view of the high-pressure nozzle in an embodiment of the present invention.

[0016] Figure 4 This is a perspective view of the transmission component in an embodiment of the present invention.

[0017] Figure 5 This is a schematic diagram of the reset part in an embodiment of the present invention.

[0018] Figure 6 This is a perspective view of the balancing component in an embodiment of the present invention.

[0019] Figure 7 For the present invention Figure 1 A magnified view of part a in the middle.

[0020] Figure 8 For the present invention Figure 2 A magnified view of part b in the image.

[0021] Reference numerals: 1-Fixed pipe, 11-First flange, 12-Mounting hole, 13-Axial guide rail, 2-High pressure nozzle, 21-Second flange, 22-Toothed groove, 23-Boss, 231-Limiting hole, 3-Transmission assembly, 31-Transmission gear, 32-Rotating shaft, 33-Reset part, 331-Fixed housing, 332-Coil spring, 4-Balance assembly, 41-Rack plate, 42-Fixed block, 421-Slide groove, 43-Limiting plate, 431-Stop block, 432-Reset spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0024] Please see Figures 1 to 8 The present invention provides a high-pressure resistant connection device, including a fixed pipe 1 and a high-pressure nozzle 2, and further including a transmission assembly 3 and a balancing assembly 4. The transmission assembly 3 and the balancing assembly 4 are both installed on the inner wall of the fixed pipe 1. A first flange 11 and a second flange 21 are fixedly connected to the outer sides of the fixed pipe 1 and the high-pressure nozzle 2, respectively. The first flange 11 and the second flange 21 are connected to each other by bolts. The inner wall of the high-pressure nozzle 2 is engaged with one side of the transmission assembly 3, and the other side of the transmission assembly 3 is engaged with the balancing assembly 4. The end of the balancing assembly 4 is inserted into the inner wall of the high-pressure nozzle 2.

[0025] In this embodiment of the invention, the design of the transmission component 3 and the balance component 4 working together facilitates the installation of the high-pressure nozzle 2 onto the fixed pipe 1. On the other hand, when the high-pressure medium generated in the high-pressure pump body is blown toward the high-pressure nozzle 2 through the fixed pipe 1, it can increase the resistance of the high-pressure nozzle 2 sliding away from the fixed pipe 1. It has the characteristics of strong high-pressure resistance, simple structure and easy installation of the high-pressure nozzle 2.

[0026] Please see Figures 1 to 7 In one embodiment of the present invention, the transmission assembly 3 includes a transmission gear 31, a rotating shaft 32, and a reset part 33. The reset part 33 is fixedly connected to the inner wall of the fixed tube 1. One end of the rotating shaft 32 is installed on the inner wall of the fixed tube 1, and the other end is movably sleeved in the reset part 33. The transmission gear 31 is fixedly sleeved on the rotating shaft 32. The balance assembly 4 and the inner wall of the high-pressure nozzle 2 are both meshed with the transmission gear 31.

[0027] Please see Figures 1 to 8 In one embodiment of the present invention, the balancing component 4 includes a rack plate 41, a fixing block 42 and a limiting plate 43. The transmission gear 31 is meshed with the rack plate 41. The rack plate 41 is installed on the inner wall of the fixing pipe 1. The fixing block 42 is fixedly connected to the end of the rack plate 41. One end of the limiting plate 43 is movably sleeved in the fixing block 42, and the other end is inserted into the inner wall of the high-pressure nozzle 2.

[0028] In this embodiment of the invention, the surface of the limiting plate 43 is provided with an inclined surface.

[0029] Please see Figures 1 to 8 In one embodiment of the present invention, a toothed groove 22 is provided on the inner wall of the high-pressure nozzle 2 near the port, the transmission gear 31 is meshed with the toothed groove 22, and a boss 23 is fixedly connected to the inner wall of the high-pressure nozzle 2 away from the toothed groove 22. A limiting hole 231 is provided on the surface of the boss 23, and the limiting plate 43 is inserted into the limiting hole 231.

[0030] In this embodiment of the invention, when it is necessary to install the high-pressure nozzle 2 onto the fixed pipe 1, first align the toothed groove 22 on the inner wall of the high-pressure nozzle 2 with the transmission gear 31, and then slowly push the high-pressure nozzle 2. The linearly moving toothed groove 22 can overcome the elastic force of the coil spring 332 to drive the transmission gear 31 to rotate. The rotating transmission gear 31 can then drive the rack plate 41 to move linearly in the opposite direction to the high-pressure nozzle 2.

[0031] Please see Figures 1 to 8 In one embodiment of the present invention, the reset part 33 includes a fixed housing 331 and a coil spring 332. The rotating shaft 32 and the coil spring 332 are installed inside the fixed housing 331, and the coil spring 332 is movably sleeved on the outside of the rotating shaft 32.

[0032] In this embodiment of the invention, the coil spring 332 is designed so that when the transmission gear 31 is not subjected to external force, it can retract the position of the balancing component 4 into the fixed tube 1. On the one hand, it prevents the balancing component 4 from being damaged by impact, and on the other hand, it can reduce the volume of the fixed tube 1, making it easier to transport.

[0033] Please see Figures 1 to 8 In one embodiment of the present invention, the balancing component 4 further includes a stop block 431 and a return spring 432. A groove 421 is provided on one end of the fixed block 42 near the inner wall of the high-pressure nozzle 2. The stop block 431 is slidably connected in the groove 421. The limiting plate 43 is installed on the side wall of the stop block 431. The return spring 432 is connected between the stop block 431 and the groove 421. The return spring 432 is movably sleeved on the outside of the limiting plate 43.

[0034] In this embodiment of the invention, when the limiting plate 43 at the end of the rack plate 41 contacts the boss 23 on the inner wall of the high-pressure nozzle 2, due to the design of the inclined side wall of the limiting plate 43, the squeezing force between the two can overcome the elastic force of the return spring 432 to drive the limiting plate 43 to retract until the limiting plate 43 is aligned with the limiting hole 231 on the surface of the boss 23. Then, the elastic force of the return spring 432 will drive the limiting plate 43 to slide into the limiting hole 231. The axial limiting of the limiting hole 231 can prevent the high-pressure nozzle 2 from falling off the fixed pipe 1, so that it can bear greater axial pressure.

[0035] Please see Figures 1 to 7 In one embodiment of the present invention, the inner wall of the fixed tube 1 is provided with a mounting hole 12 and an axial guide rail 13, the mounting hole 12 and the axial guide rail 13 are interconnected, the transmission component 3 is installed in the mounting hole 12, and the rack plate 41 is slidably connected in the axial guide rail 13.

[0036] The working process of this embodiment of the invention is as follows: When the high-pressure medium generated in the high-pressure pump body is blown towards the high-pressure nozzle 2 through the fixed pipe 1, due to the small diameter of the nozzle at the tail end of the high-pressure nozzle 2, the flowing high-pressure medium will apply an axial force to the high-pressure nozzle 2 away from the fixed pipe 1. The mutual cooperation design between the transmission gear 31, toothed groove 22, rack plate 41, limiting plate 43 and limiting hole 231 can increase the resistance of the high-pressure nozzle 2 sliding away from the fixed pipe 1. Compared with the method of fixing only by flange, it has the characteristics of strong high pressure resistance and good firmness.

[0037] In addition, when it is necessary to install the high-pressure nozzle 2 onto the fixed pipe 1, first align the toothed groove 22 on the inner wall of the high-pressure nozzle 2 with the transmission gear 31, and then slowly push the high-pressure nozzle 2. The linearly moving toothed groove 22 can overcome the elastic force of the coil spring 332 and drive the transmission gear 31 to rotate. The rotating transmission gear 31 can then drive the rack plate 41 to move linearly in the opposite direction to the high-pressure nozzle 2. When the limiting plate 43 at the end of the rack plate 41 contacts the boss 23 on the inner wall of the high-pressure nozzle 2, due to the design of the inclined surface of the side wall of the limiting plate 43... The squeezing force between the two can overcome the elastic force of the return spring 432 to drive the limiting plate 43 to retract until the limiting plate 43 is aligned with the limiting hole 231 on the surface of the boss 23. Then, the elastic force of the return spring 432 will drive the limiting plate 43 to slide into the limiting hole 231. The axial limiting of the limiting hole 231 can prevent the high-pressure nozzle 2 from falling off the fixed pipe 1, so that it can bear greater axial pressure. At the same time, the design of the transmission gear 31, toothed groove 22 and rack plate 41 to cooperate with each other has the characteristics of simple structure and easy installation of high-pressure nozzle 2.

[0038] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-pressure resistant connecting device, comprising a fixed pipe (1) and a high-pressure nozzle (2), characterized in that, It also includes a transmission assembly (3) and a balancing assembly (4). The transmission assembly (3) and the balancing assembly (4) are both installed on the inner wall of the fixed pipe (1). The fixed pipe (1) and the high-pressure nozzle (2) are respectively fixedly connected to the outer side of the first flange (11) and the second flange (21). The first flange (11) and the second flange (21) are connected to each other by bolts. The inner wall of the high-pressure nozzle (2) is engaged with one side of the transmission assembly (3), and the other side of the transmission assembly (3) is engaged with the balancing assembly (4). The end of the balancing assembly (4) is inserted into the inner wall of the high-pressure nozzle (2). The transmission assembly (3) includes a transmission gear (31), a rotating shaft (32), and a reset part (33). The reset part (33) is fixedly connected to the inner wall of the fixed tube (1). One end of the rotating shaft (32) is installed on the inner wall of the fixed tube (1), and the other end is movably sleeved in the reset part (33). The transmission gear (31) is fixedly sleeved on the rotating shaft (32). The inner walls of the balance assembly (4) and the high-pressure nozzle (2) are both meshed with the transmission gear (31). The balancing assembly (4) includes a rack plate (41), a fixing block (42), and a limiting plate (43). The transmission gear (31) meshes with the rack plate (41). The rack plate (41) is installed on the inner wall of the fixing pipe (1). The fixing block (42) is fixedly connected to the end of the rack plate (41). One end of the limiting plate (43) is movably sleeved in the fixing block (42), and the other end is inserted into the inner wall of the high-pressure nozzle (2). The high-pressure nozzle (2) has a toothed groove (22) on its inner wall near the port. The transmission gear (31) meshes with the toothed groove (22). A boss (23) is fixedly connected to the inner wall of the high-pressure nozzle (2) away from the toothed groove (22). A limiting hole (231) is opened on the surface of the boss (23). The limiting plate (43) is inserted into the limiting hole (231). The balancing assembly (4) also includes a stop block (431) and a return spring (432). A groove (421) is provided on one end of the fixed block (42) near the inner wall of the high-pressure nozzle (2). The stop block (431) is slidably connected in the groove (421). The limiting plate (43) is installed on the side wall of the stop block (431). The return spring (432) is connected between the stop block (431) and the groove (421). The return spring (432) is movably sleeved on the outside of the limiting plate (43). The reset part (33) includes a fixed housing (331) and a coil spring (332). The rotating shaft (32) and the coil spring (332) are installed inside the fixed housing (331), and the coil spring (332) is movably sleeved on the outside of the rotating shaft (32). The inner wall of the fixed tube (1) is provided with an installation hole (12) and a axial guide rail (13). The installation hole (12) and the axial guide rail (13) are connected to each other. The transmission component (3) is installed in the installation hole (12). The rack plate (41) is slidably connected in the axial guide rail (13).

Images