Stainless steel agricultural machinery internal and external welding straight joint sealing element

Abstract

The utility model discloses a stainless steel agricultural machine internal and external welding straight joint sealing element, which belongs to the technical field of sealing joints and comprises a main sleeve, a nut ring is arranged on the outer side of the main sleeve, and a small threaded pipe is fixedly connected to one side of the main sleeve. The side, away from the small threaded pipe, of the main sleeve is fixedly connected with a large threaded pipe, one end of the large threaded pipe is in threaded connection with a nut sleeve, a welding head is rotationally connected between the nut sleeve and the large threaded pipe in a penetrating mode, and a water leakage preventing assembly is installed in the main sleeve. Through ingenious combination of the movable rotating plate, the supporting plate, the fixed rotating plate, the inner sleeve and other components, tight attachment and height self-adaptive adjustment of the sealing piece to the inner wall of the main sleeve are achieved, the stability and firmness of the sealing piece are greatly improved, the problem that a traditional sealing piece is prone to loosening and falling off is effectively solved, and the sealing piece is convenient to use. A good sealing effect is achieved, and the service life of a sealing piece is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sealed joint, specifically relates to a stainless steel agricultural machinery inside and outside welding straight through joint sealing element. BACKGROUND

[0002] In the field of agricultural machinery, the use of stainless steel joints and their sealing elements is of great significance. Stainless steel joints are widely used in the pipeline connection of agricultural machinery due to their corrosion resistance, rust prevention, and good sealing performance. However, traditional stainless steel joints have some problems in actual application, such as insufficient connection stability, which can easily cause the joint and the pipeline to separate, thereby affecting the normal operation of the equipment. In addition, the complex working environment of agricultural machinery puts higher requirements on the sealing performance and durability of the joint.

[0003] In order to improve the sealing performance and connection stability of the stainless steel agricultural machinery inside and outside welding straight through joint, although various improvement measures have been adopted in the prior art, there are still some problems. For example, some improvement measures are relatively complex during installation, requiring professional tools and skills, which increases the installation difficulty and time cost. In addition, the welding position is still a weak link of the joint, which is prone to weld damage due to improper welding process or complex welding environment. For example, during the welding process, if the welding parameters are not properly controlled, cracks, pores, or intergranular corrosion may occur, thereby affecting the sealing performance and durability of the joint. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a stainless steel agricultural machinery inside and outside welding straight through joint sealing element.

[0005] The technical scheme adopted to solve the above technical problems is: a stainless steel agricultural machinery inside and outside welding straight through joint sealing element, comprising a main sleeve, a nut ring is arranged on the outer side of the main sleeve, a small threaded pipe is fixedly connected to one side of the main sleeve, a large threaded pipe is fixedly connected to the side of the main sleeve away from the small threaded pipe, a nut sleeve is threadedly connected to one end of the large threaded pipe, a welding joint is rotatably connected between the nut sleeve and the large threaded pipe, and a water leakage prevention assembly is installed inside the main sleeve.

[0006] Further, the water leakage prevention assembly comprises an inner sleeve, one end of the inner sleeve is in contact with and rotatably connected to the main sleeve, the inner sleeve is located inside the large threaded pipe at the middle part, a convex sealing ring is fixedly connected to the end of the inner sleeve away from the main sleeve, and the convex sealing ring is attached to the end of the welding joint located inside the nut sleeve.

[0007] Through the above technical scheme, when the welding joint and the nut sleeve are tightly matched, the convex sealing ring can effectively prevent water or other fluids from leaking from the welding joint, thereby greatly improving the sealing performance of the joint and improving the convenience and applicability of installation.

[0008] Further, the inner sleeve is provided with a plurality of liquid inlet channels at one end inside the main sleeve, the plurality of liquid inlet channels are arranged in a circular array, one end of the liquid inlet channel is open on the annular surface of the inner sleeve, the other end of the liquid inlet channel is open on the cylindrical surface of the inner sleeve, the inner sleeve is provided with a treatment cabin, the one-way valve is fixedly connected inside the treatment cabin, and the one-way valve is installed at the connection between the liquid inlet channel and the treatment cabin.

[0009] Through the above technical scheme, when the fluid enters the treatment cabin through the liquid inlet channel, the one-way valve can ensure that the fluid can only flow in one direction, effectively preventing the fluid from flowing backward or leaking, not only improving the fluid treatment capacity of the sealing element, but also enhancing its stability and durability, at the same time, the plurality of liquid inlet channels arranged in a circular array can make the fluid evenly distributed on the surface of the inner sleeve, further improving the fluid treatment efficiency and sealing performance of the sealing element.

[0010] Further, the inner sleeve is provided with a plurality of liquid inlet channels at one end inside the main sleeve, the plurality of liquid inlet channels are arranged in a circular array, one end of the liquid inlet channel is open on the annular surface of the inner sleeve, the other end of the liquid inlet channel is open on the cylindrical surface of the inner sleeve, the inner sleeve is provided with a treatment cabin, the one-way valve is fixedly connected inside the treatment cabin, and the one-way valve is installed at the connection between the liquid inlet channel and the treatment cabin.

[0011] Through the above technical scheme, when the welding head is closely attached to the inner sleeve, the plurality of gas guide pipes can effectively guide the flow of gas, and the communication design of the push rod and the gas guide pipe makes the gas push the sealing block to move, ensuring that the sealing element and the welding head are more closely attached, effectively preventing leakage caused by vibration or pressure changes.

[0012] Further, the sealing block is fixedly connected with a sliding cavity at one end away from the gas guide pipe, the sliding cavity is slidingly connected with the inner sleeve, the sliding cavity is fixedly connected with a connecting sleeve at the penetrating end, the connecting sleeve is rotatably connected with a connecting rod inside, the connecting rod is slidingly connected with a sliding groove at both penetrating ends, and the sliding groove is fixedly connected with the inner sleeve.

[0013] Through the above technical scheme, when the sealing block is pushed by the gas, the sliding cavity can slide along the inner sleeve, enhancing the mobility of the sealing block, effectively reducing friction and wear, and prolonging the service life of the sealing element, at the same time, the connecting sleeve is rotatably connected with the connecting rod inside, and the connecting rod is slidingly connected with the sliding groove at both penetrating ends, so that the sealing block can remain stable during movement, preventing the problem of loose sealing caused by shaking or deviation, further improving the stability and sealing performance of the sealing element, ensuring the close attachment between the welding head and the inner sleeve, and effectively preventing the leakage problem.

[0014] Further, the connecting rod is penetrated by a movable rotating plate on both sides, the movable rotating plate is rotatably connected with a supporting plate at one end away from the connecting rod, the supporting plate is rotatably connected with the movable rotating plate at the middle part, the supporting plate is attached to the inner wall of the main sleeve, and the supporting plate is rotatably connected with a fixed rotating plate at one end away from the movable rotating plate, and the fixed rotating plate is rotatably connected with the inner sleeve at one end away from the supporting plate.

[0015] Through the above technical scheme, when the connecting rod is subjected to force, the movable rotating plate can rotate around the connecting rod, thereby driving the supporting plate to swing, and the rotatable connection between the middle part of the supporting plate and the movable rotating plate enables the supporting plate to flexibly adjust its height, so as to better adapt to the shape of the inner wall of the main sleeve, and ensure that the sealing element is closely attached to the inner wall of the main sleeve, and meanwhile, the rotatable connection between the fixed rotating plate at one end away from the movable rotating plate and the supporting plate and the rotatable connection between the fixed rotating plate and the inner sleeve further enhance the stability and firmness of the sealing element, not only improve the sealing performance of the sealing element, but also effectively prevent the sealing element from loosening or falling off due to external force, thereby further prolonging the service life of the sealing element.

[0016] Further, the welding head is fixedly connected with an annular sealing ring at one end surface in the nut sleeve, the outer ring area of the annular sealing ring is rotatably attached to the large threaded pipe, and the inner ring area of the annular sealing ring is rotatably attached to the convex sealing ring.

[0017] Through the above technical scheme, the design of the annular sealing ring can enhance the sealing performance between the welding head, the nut sleeve and the convex sealing ring, ensure the stability and durability of the joint, be suitable for the transmission of various high-pressure, high-temperature and corrosive media, and be widely applied in the connection of agricultural equipment, thereby providing a strong guarantee for the normal operation of agricultural equipment.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model discloses a movable rotating plate, a supporting plate, a fixed rotating plate and an inner sleeve are combined skillfully, the sealing element is closely attached to the inner wall of the main sleeve and the height is self-adaptingly adjusted, not only greatly enhance the stability and firmness of the sealing element, but also effectively solve the problem that the traditional sealing element is easy to loosen and fall off, thereby prolonging the service life of the sealing element significantly. ACCURACY

[0020] Fig. 1 It is the overall structure schematic diagram of the utility model;

[0021] Fig. 2 is a local structure section view schematic diagram of the utility model;

[0022] Fig. 3 is a first schematic diagram of the inner sleeve structure of the utility model;

[0023] Fig. 4 is a second schematic diagram of the inner sleeve structure of the utility model.

[0024] Reference signs: 1, main sleeve; 2, screw cap ring; 3, small threaded pipe; 4, large threaded pipe; 5, screw cap sleeve; 6, welding head; 7, inner sleeve; 8, annular sealing ring; 9, liquid inlet; 10, check valve; 11, treatment cabin; 12, sliding groove; 13, movable rotating plate; 14, supporting plate; 15, fixed rotating plate; 16, sliding cavity; 17, push rod; 18, sealing block; 19, air guide pipe; 20, convex sealing ring; 21, connecting sleeve; 22, connecting rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0026] As Figs. 1 to 4 shown, the stainless steel agricultural machine inner and outer welding straight joint sealing piece of the embodiment includes a main sleeve 1, the outer side of the main sleeve 1 is provided with a screw cap ring 2, one side of the main sleeve 1 is fixedly connected with a small threaded pipe 3, the side of the main sleeve 1 away from the small threaded pipe 3 is fixedly connected with a large threaded pipe 4, one end of the large threaded pipe 4 is threadedly connected with a screw cap sleeve 5, the screw cap sleeve 5 and the large threaded pipe 4 are rotatably connected with a welding head 6 penetrating therebetween, and a water leakage prevention assembly is installed inside the main sleeve 1.

[0027] The water leakage prevention assembly includes an inner sleeve 7, one end of the inner sleeve 7 is in contact with and rotatably connected with the main sleeve 1, the middle part of the inner sleeve 7 is located inside the large threaded pipe 4, one end of the inner sleeve 7 away from the main sleeve 1 is fixedly connected with a convex sealing ring 20, and the convex sealing ring 20 is attached to one end of the welding head 6 located inside the screw cap sleeve 5.

[0028] One end of the inner sleeve 7 located inside the main sleeve 1 is provided with a plurality of liquid inlets 9, the plurality of liquid inlets 9 are arranged in a circular array, one end of the liquid inlet 9 is open on the annular surface of the inner sleeve 7, the other opening of the liquid inlet 9 is located on the cylindrical surface of the inner sleeve 7, a treatment cabin 11 is arranged inside the liquid inlet 9, a check valve 10 is fixedly connected inside the treatment cabin 11, and the check valve 10 is installed at the connecting position of the liquid inlet 9 and the treatment cabin 11.

[0029] The end of the inner sleeve 7 that is attached to the welding head 6 is provided with several air guide pipes 19 arranged in a circular array. The end of the air guide pipe 19 inside the inner sleeve 7 is fixedly connected with a push rod 17, which is in communication with the air guide pipe 19. The inner side of the push rod 17 is slidably connected with a sealing block 18.

[0030] The end of the sealing block 18 away from the air guide pipe 19 is fixedly connected with a sliding cavity 16, which is slidably connected with the inner sleeve 7. The penetrating end of the sliding cavity 16 is fixedly connected with a connecting sleeve 21. The inner side of the connecting sleeve 21 is rotatably connected with a connecting rod 22. The two penetrating ends of the connecting rod 22 are slidably connected with sliding grooves 12, which are fixedly connected with the inner sleeve 7.

[0031] The penetrating ends of the connecting rod 22 on both sides are rotatably connected with movable rotating plates 13. The end of the movable rotating plate 13 away from the connecting rod 22 is rotatably connected with a support plate 14. The middle part of the support plate 14 is rotatably connected with the movable rotating plate 13. The support plate 14 is attached to the inner wall of the main sleeve 1. The end of the support plate 14 away from the movable rotating plate 13 is rotatably connected with a fixed rotating plate 15, which is rotatably connected with the inner sleeve 7 at the end away from the support plate 14.

[0032] The end of the welding head 6 inside the nut sleeve 5 is fixedly connected with an annular sealing ring 8. The outer ring of the annular sealing ring 8 is rotatably attached to the large threaded pipe 4. The inner ring of the annular sealing ring 8 is rotatably attached to the convex sealing ring 20.

[0033] The working principle of this embodiment is as follows:

[0034] In use, first, the main sleeve 1 is fixedly connected to the pipeline system of the agricultural machinery through the nut ring 2 and the small threaded pipe 3. Then, the welding head 6 is threadedly connected with the nut sleeve 5, and it is ensured that the welding head 6 is tightly inserted into the large threaded pipe 4. In this process, the annular sealing ring 8 plays a key sealing role, which is tightly attached to the large threaded pipe 4 and the convex sealing ring 20 at the same time, effectively preventing fluid leakage from the gap between the welding head 6 and the large threaded pipe 4.

[0035] When the fluid enters the main sleeve 1 through the pipeline, it will first encounter the liquid inlet channels 9 on the inner sleeve 7. These liquid inlet channels 9 are evenly distributed on the annular surface of the inner sleeve 7, ensuring that the fluid can be evenly distributed and smoothly enter the treatment cabin 11. Inside the treatment cabin 11, the one-way valve 10 ensures that the fluid can only flow in one direction, effectively preventing the fluid from flowing backward or leaking. This design not only improves the fluid treatment capacity of the sealing element, but also enhances its stability and durability.

[0036] At the same time, when the fluid enters the push rod 17 through the air guide pipe 19, it will push the sealing block 18 to slide along the sliding cavity 16 on the inner sleeve 7. This design enables the sealing block 18 to automatically adjust its position according to the pressure of the fluid, thereby ensuring a tighter fit between the sealing member and the welding head 6. Even if the agricultural machinery works in a vibrating or pressure-changing environment, this self-adaptive adjustment mechanism can effectively prevent leakage problems.

[0037] In addition, the combined design of the connecting rod 22, the movable rotating plate 13, the supporting plate 14 and the fixed rotating plate 15 further enhances the stability and firmness of the sealing member. When the connecting rod 22 is subjected to fluid pressure or other external forces, it will drive the supporting plate 14 to swing through the movable rotating plate 13. The close fit of the supporting plate 14 with the inner wall of the main sleeve 1 ensures that the sealing member can be firmly fixed inside the main sleeve 1. At the same time, the rotating connection of the fixed rotating plate 15 with the inner sleeve 7 also provides additional stability support, preventing the sealing member from loosening or falling off due to external forces.

[0038] The above only describes the preferred embodiments of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A sealing element for a straight-through joint of an internal or external weld of an agricultural machine made of stainless steel, comprising a main sleeve (1), characterized in that, The outer side of the main sleeve (1) is provided with a nut ring (2), one side of the main sleeve (1) is fixedly connected with a small threaded pipe (3), the side away from the small threaded pipe (3) of the main sleeve (1) is fixedly connected with a large threaded pipe (4), one end of the large threaded pipe (4) is threadedly connected with a nut sleeve (5), the nut sleeve (5) and the large threaded pipe (4) are through rotationally connected with a welding head (6), and the inside of the main sleeve (1) is provided with a water leakage prevention assembly.

2. A seal for a straight through joint of an internal or external weld of an agricultural machine made of stainless steel according to claim 1, characterized in that The water leakage prevention assembly comprises an inner sleeve (7), one end of the inner sleeve (7) is in contact with and rotationally connected with the main sleeve (1), the middle part of the inner sleeve (7) is located in the inside of the large threaded pipe (4), the end away from the main sleeve (1) of the inner sleeve (7) is fixedly connected with a convex sealing ring (20), and the end of the convex sealing ring (20) located in the inside of the nut sleeve (5) is attached to the welding head (6).

3. A seal for a straight through joint of an internal or external weld of an agricultural machine of stainless steel as claimed in claim 2, wherein, The end of the inner sleeve (7) located in the inside of the main sleeve (1) is provided with a plurality of liquid inlet channels (9), the plurality of liquid inlet channels (9) are arranged in a circumferential array, one end of the liquid inlet channel (9) is open on the annular surface of the inner sleeve (7), the other opening of the liquid inlet channel (9) is located on the cylindrical surface of the inner sleeve (7), the inside of the liquid inlet channel (9) is provided with a treatment cabin (11), the inside of the treatment cabin (11) is fixedly connected with a one-way valve (10), and the one-way valve (10) is installed at the connection between the liquid inlet channel (9) and the treatment cabin (11).

4. A seal for a straight through joint of an internal or external weld of an agricultural machine of stainless steel as claimed in claim 2, wherein, The end of the inner sleeve (7) attached to the welding head (6) is provided with a plurality of air guide pipes (19), the plurality of air guide pipes (19) are arranged in a circumferential array, one end of the air guide pipe (19) located in the inside of the inner sleeve (7) is fixedly connected with a push rod (17), the push rod (17) is in communication with the air guide pipe (19), and the inside of the push rod (17) is slidably connected with a sealing block (18).

5. A seal for a straight through joint of an internal or external weld of an agricultural machine of stainless steel as claimed in claim 4, wherein, The end away from the air guide pipe (19) of the sealing block (18) is fixedly connected with a sliding cavity (16), the sliding cavity (16) is through slidably connected with the inner sleeve (7), the through end of the sliding cavity (16) is fixedly connected with a connecting sleeve (21), the inside of the connecting sleeve (21) is through rotationally connected with a connecting rod (22), the two through ends of the connecting rod (22) are slidably connected with sliding grooves (12) respectively, and the sliding grooves (12) are fixedly connected with the inner sleeve (7).

6. A seal for a straight through joint of an internal or external weld of an agricultural machine of stainless steel as claimed in claim 5, wherein, The two through ends of the connecting rod (22) are through rotationally connected with movable rotating plates (13), the end away from the connecting rod (22) of the movable rotating plate (13) is rotationally connected with a supporting plate (14), the middle part of the supporting plate (14) is rotationally connected with the movable rotating plate (13), the supporting plate (14) is attached to the inner wall of the main sleeve (1), the end away from the movable rotating plate (13) of the supporting plate (14) is rotationally connected with a fixed rotating plate (15), and the end away from the supporting plate (14) of the fixed rotating plate (15) is rotationally connected with the inner sleeve (7).

7. A seal for a straight through joint of an agricultural machine according to claim 1, wherein The surface of the end of the welding head (6) located in the inside of the nut sleeve (5) is fixedly connected with an annular sealing ring (8), the outer ring area of the annular sealing ring (8) is rotationally attached to the large threaded pipe (4), and the inner ring area of the annular sealing ring (8) is rotationally attached to the convex sealing ring (20).

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