Ninety-degree round-top and square-bottom inner arc workpiece

Abstract

The 90-degree round-top and square-bottom inner arc workpiece comprises a pipe fitting, an inner cavity of the pipe fitting is bent by 90 degrees from the input end to the output end, the section of the inner cavity of the pipe fitting transits from a round shape to a square shape and then transits to a round shape, a heat dissipation cavity is formed in the pipe fitting, and heat conduction oil is injected into the heat dissipation cavity. And a heat dissipation mechanism for dissipating heat of the heat conduction oil is mounted on the outer wall of the maintenance plate. The 90-degree inner arc pipe fitting with the round top and the square bottom is arranged, through the smooth transition design of the round-square-round inner cavity section, the flowing characteristic of particulate matter at a 90-degree sharp turn is improved, the smooth transition structure effectively reduces sudden change of the flowing speed of the particulate matter when the particulate matter flows through the elbow, the phenomenon of impact force concentration is avoided, and the service life of the elbow is prolonged. The abrasion of the inner wall of the pipeline and the stress concentration of the elbow part are reduced. Meanwhile, the structure can disperse the impact force of the particulate matter and reduce the accumulation and blockage risks, and the efficiency of the particulate matter conveying process and the reliability of the system are improved.

Description

Technical Field

[0001] The invention relates to the technical field of particle conveying, in particular to a circular arc workpiece within a ninety-degree celestial circle and square earth. Background Art

[0002] With the continuous advancement of industrialization, dust pipeline transportation systems have been widely used in many fields, especially in the chemical, metallurgical, pharmaceutical and other industries.

[0003] In the dust particle pipeline conveying system, a 90-degree elbow is usually used to achieve the change of particle conveying direction. Due to the sharp turn characteristics of the 90-degree elbow, the dust particles will be subjected to severe turning force during the flow process, resulting in uneven flow of particles in the pipeline, increasing the impact and wear on the pipeline wall. This violent turning and collision not only aggravates the pipeline wear, but may also cause dust aggregation, blockage or airflow instability, thereby affecting the conveying efficiency. At the same time, when the dust particles impact the inner wall of the pipeline, the partial kinetic energy will be converted into heat energy due to the impact force and friction, resulting in local temperature increase, thermal fatigue of the pipeline wall, cracks or peeling, thereby shortening the service life of the pipeline. Therefore, a 90-degree arc workpiece is proposed to address the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a 90-degree celestial-circular-square internal arc workpiece.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The arc workpiece in the ninety-degree celestial circle and square square includes a pipe fitting, the inner cavity of the pipe fitting is bent at ninety degrees from the input end to the output end, and the inner cavity cross-section transitions from a circle to a square and then back to a circle. The square cross-section and the circular cross-section of the pipe fitting are smoothly transitioned. Flanges are fixedly connected to both ends of the pipe fitting. The outer wall of the pipe fitting is provided with a forty-five-degree inclined surface, which is connected to the inside of the pipe fitting and is provided with an inspection plate. A connecting part is fixedly connected to the outer wall of the inspection plate. The curvature of the bottom of the connecting part smoothly transitions to the square cross-section of the pipe fitting. A sealing strip is provided on the contact surface between the inspection plate and the outer wall of the pipe fitting. The angle between the input end and the output end of the pipe fitting is ninety degrees. A heat dissipation cavity is opened in the pipe fitting, and heat transfer oil is injected into the heat dissipation cavity. A heat dissipation mechanism for dissipating heat from the heat transfer pipe is installed on the outer wall of the inspection plate.

[0007] Preferably, the heat dissipation mechanism comprises inclined blades rotatably connected to the bottom of the connecting portion, and the blades on the inclined blades all have a certain inclination arc, and the inclination angle is forty-five degrees.

[0008] Preferably, the outer wall of the inspection plate is fixedly connected to a device cylinder, the bottom of the device cylinder is rotatably connected to a reciprocating screw, the reciprocating screw is coaxially fixedly connected to the inclined blade, and the outer wall of the inspection plate is fixedly connected to multiple groups of cooling fins, and the multiple groups of cooling fins extend into the interior of the device cylinder and fit against the inner wall of the device cylinder.

[0009] Preferably, a screw sleeve is threadedly connected to the reciprocating screw threaded section, a connecting rod is fixedly connected to the end face of the screw sleeve, a piston is fixedly connected to the end of the connecting rod, and is in close contact with the inner wall of the device cylinder.

[0010] Preferably, two groups of connecting pipes are installed on the outer wall of the device barrel, and both ends are connected to the device barrel and the inside of the heat dissipation chamber respectively, and both are equipped with one-way valves. Both ends of the two groups of connecting pipes are equipped with quick-release heads, and are fixedly connected to the pipe fittings and the device barrel respectively.

[0011] Preferably, a limiting rod is fixedly connected to the bottom of the device tube, the screw sleeve is slidably connected to the outer wall of the limiting rod, and the end of the reciprocating screw is fixedly connected to a limiting block.

[0012] Preferably, the radius of the limit block is larger than the radius of the reciprocating screw, the inspection plate is connected to the pipe fitting by screws, and two sets of handles are installed on the outer wall of the inspection plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention improves the flow characteristics of particles at the 90-degree sharp bend by setting a 90-degree arc pipe fitting and a smooth transition design of the inner cavity section from circular to square to circular. The smooth transition structure effectively reduces the sudden change in the flow velocity of particles when they flow through the elbow, avoids the phenomenon of impact force concentration, reduces the wear of the inner wall of the pipeline and the stress concentration at the elbow. At the same time, the structure can disperse the impact force of particles and reduce the risk of accumulation and blockage, thereby improving the efficiency of the particle transportation process and the reliability of the system.

[0015] 2. The present invention realizes efficient transfer and dissipation of heat during the transportation of dust particles by setting up a heat dissipation cavity and a heat dissipation mechanism. The heat transfer oil circulates under the drive of the inclined blades, and the heat is quickly transferred to the external environment through multiple groups of heat dissipation fins, avoiding thermal fatigue and performance degradation of the workpiece caused by local high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a 90-degree circular arc workpiece in the embodiment 1 of the present invention;

[0017] Figure 2 for Figure 1 Structural diagram;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-section structure;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the heat dissipation mechanism;

[0020] Figure 5 for Figure 3 A schematic diagram of the enlarged structure in the middle.

[0021] In the figure: 1. pipe fitting; 2. cooling fin; 3. flange; 4. inspection plate; 5. installation tube; 6. connecting pipe; 7. handle; 8. screw; 9. quick release head; 10. connecting part; 11. tilting blade; 12. reciprocating screw; 13. limit rod; 14. screw sleeve; 15. piston; 16. limit block; 17. connecting rod; 18. cooling chamber. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] The first embodiment of the present invention provides a 90-degree inner arc workpiece, which is used to improve the uneven flow, pipeline wear and local temperature rise problems of dust particles in the pipeline transportation system caused by sharp turns, thereby improving the transportation efficiency and pipeline life.

[0025] The arc workpiece in the ninety-degree celestial circle and square earth includes a pipe fitting 1. The inner cavity of the pipe fitting 1 is bent at ninety degrees from the input end to the output end, and its inner cavity cross-section gradually transitions from the circular shape at the input end to the square shape in the middle, and then gradually transitions from the square shape to the circular shape at the output end. A smooth arc transition design is used between the square cross-section and the circular cross-section to avoid the concentration of impact force of particles during the flow process, thereby reducing the wear of the inner wall of the pipe. Flanges 3 are fixedly connected to both ends of the pipe fitting 1 for sealing connection with other pipeline systems. A forty-five-degree inclined surface is provided on the outer wall of the pipe fitting 1, which is connected to the inner cavity of the pipe fitting 1 for inspecting the internal cavity of the pipe fitting 1. An inspection plate 4 is provided at the inclined surface, and the inspection plate 4 is in close contact with the outer wall of the pipe fitting 1 through a sealing strip to ensure the sealing performance of the pipeline system and prevent dust leakage.

[0026] The outer wall of the inspection plate 4 is fixedly connected with a connection part 10, and the bottom curvature of the connection part 10 smoothly transitions with the square cross section of the pipe fitting 1. The structure of the connection part 10 is ensured to match the transition area of ​​the pipe fitting 1, thereby effectively improving the flow stability of particles at the pipe fitting 1. In order to improve the heat dissipation performance of the elbow under high temperature conditions, a heat dissipation cavity 18 is provided inside the pipe fitting 1. Heat transfer oil is injected into the heat dissipation cavity 18, and the heat transfer oil transfers the heat generated by the impact of dust particles on the inner wall of the pipe fitting 1 to the external heat dissipation structure through heat conduction.

[0027] In addition, the angle between the input end and the output end of the pipe 1 is ninety degrees. Through the circular-square-circular internal transition design, this embodiment significantly reduces the particle impact and high temperature problems caused by sharp turns, while improving the conveying efficiency and service life of the pipe 1.

[0028] Embodiment 2: This embodiment provides a 90-degree arc workpiece, further improving its heat dissipation structure. By combining mechanical and heat conduction design, the heat dissipation efficiency is greatly improved, thereby solving the problem of local high temperature caused by dust particles impacting the pipe wall.

[0029] The arc workpiece in the ninety-degree celestial circle and square earth includes a pipe fitting 1. A heat dissipation cavity 18 is provided in the pipe fitting 1, and heat transfer oil is injected into the heat dissipation cavity 18 to absorb the heat generated by the flow and impact of particles on the inner wall of the pipe, and transfer the heat to the environment through an external heat dissipation structure to achieve efficient heat dissipation. The heat dissipation mechanism includes an inclined blade 11 rotatably connected to the bottom of the connecting part 10. The inclined blade 11 is composed of a plurality of blades, and the blade has a certain inclination arc, and the inclination angle is forty-five degrees. When dust particles flow and hit the inclined blade 11, the kinetic energy of the particles drives the blade to rotate, and at the same time produces a buffering effect, effectively slowing down the impact speed of the particles, and reducing the impact force and wear on the pipe wall.

[0030] The outer wall of the inspection plate 4 is fixedly connected to the device barrel 5. The reciprocating screw 12 is rotatably connected to the bottom of the device barrel 5. The reciprocating screw 12 has a threaded section for driving the mechanical movement of the heat dissipation mechanism. The threaded section is threadedly connected to a screw sleeve 14, and the end face of the screw sleeve 14 is fixedly connected to a connecting rod 17. The other end of the connecting rod 17 is fixedly connected to a piston 15, which fits the inner wall of the device barrel 5 and can achieve reciprocating motion in the device barrel 5. The outer wall of the inspection plate 4 is also fixedly connected to multiple groups of heat dissipation fins 2. The heat dissipation fins 2 all extend to the interior of the device barrel 5 and fit the inner wall of the device barrel 5 to further increase the heat conduction efficiency of the heat transfer oil. Through the heat conduction effect of the heat dissipation fins 2, the heat in the heat dissipation cavity 18 can be quickly transferred to the outside of the device barrel 5 and dissipated through air convection.

[0031] In order to realize the circulation of the heat transfer oil, two groups of connecting pipes 6 are installed on the outer wall of the device barrel 5. The two ends of the connecting pipes 6 are respectively connected to the inside of the device barrel 5 and the heat dissipation cavity 18. The inside of the connecting pipes 6 is installed with a one-way valve to control the one-way flow of the heat transfer oil, thereby preventing backflow or gas from entering the heat dissipation system. Quick-release heads 9 are installed at both ends of the two groups of connecting pipes 6 for quick disassembly and maintenance. The quick-release heads 9 are fixedly connected to the pipe fitting 1 and the device barrel 5 respectively.

[0032] In addition, a limit rod 13 is fixedly connected to the bottom of the device tube 5. The limit rod 13 is slidably connected to the screw sleeve 14 to guide the linear motion of the screw sleeve 14 to ensure that it maintains stable operation during the rotation of the screw. The end of the reciprocating screw 12 is also fixedly connected to a limit block 16, which prevents the screw from moving beyond the set range and ensures the mechanical reliability of the system.

[0033] The radius of the limit block 16 is greater than the radius of the reciprocating screw 12 . The inspection plate 4 is connected to the pipe fitting 1 through screws 8 . Two sets of handles 7 are installed on the outer wall of the inspection plate 4 .

[0034] The present invention can be explained by the following operation mode:

[0035] Dust particles enter from the input end of the pipe 1, and a smooth flow is achieved through the optimized design of the inner cavity of the pipe. The inner cavity cross section of the pipe 1 gradually transitions from a circular cross section at the input end to a square cross section in the middle, and then smoothly transitions from a square cross section to a circular cross section at the output end.

[0036] When dust particles enter the pipe 1, the circular cross-section provides a good flow introduction effect. The evenly distributed wall of the circular cross-section enables the particles to flow at a stable speed and direction when entering the tube cavity, avoiding turbulence and flow instability caused by sudden changes in the cross-section. When the dust particles enter the square cross-section area in the middle, the square cross-section design effectively slows down the flow rate of the particles by expanding the flow area and optimizing the flow trajectory. The flow velocity of the dust particles can be evenly dispersed to the four corners of the square cross-section, thereby reducing the concentrated impact of the particles on the inner wall of the pipe. In addition, the square cross-section area can also guide the flow direction through its role in allowing the particles to gradually adapt to the geometric structure of the ninety-degree turn, avoiding flow turbulence caused by bending.

[0037] After completing the 90-degree bend, the particles can smoothly return to the circular cross-section and re-concentrate in the flow center area, thereby reducing the scattering and impact of particles at the bend. It effectively avoids the problem of particle accumulation and blockage caused by the abrupt elbow structure, and also significantly reduces the wear rate of the elbow of the pipe fitting 1. It reduces the sudden change of the flow velocity of particles at the 90-degree sharp bend, effectively avoids the concentration of impact force, and reduces the wear of the inner wall of the pipe.

[0038] The heat transfer oil in the heat dissipation cavity 18 is used to absorb the heat generated by the impact of particles on the inner wall of the pipe 1. The heat transfer oil circulates through the heat dissipation mechanism and transfers the heat to the external heat dissipation structure. When the dust particles flow through the pipe 1 and hit the inclined blades 11, the kinetic energy of the particles drives the inclined blades 11 to rotate. The rotation of the blades buffers the impact force of the dust particles on the one hand, and provides power for the reciprocating screw 12 on the other hand. The rotation of the reciprocating screw 12 drives the screw sleeve 14 to slide on the linearly guided limit rod 13, pushing the connecting rod 17 and the piston 15 up and down. When the piston 15 slides in the device barrel 5, the heat transfer oil in the heat dissipation cavity 18 is injected into the device barrel 5. The injected heat transfer oil transfers the heat to the external environment through multiple sets of heat dissipation fins 2, completing the heat dissipation process.

[0039] The heat transfer oil that has completed heat dissipation returns to the heat dissipation cavity 18 through the connecting pipe 6. A one-way valve is provided in the connecting pipe 6 to ensure the one-way flow of the heat transfer oil, thereby preventing backflow and gas from entering the heat dissipation system. Through such a cycle, the heat transfer oil realizes dynamic flow between the heat dissipation cavity 18 and the heat dissipation mechanism, thereby ensuring the continuity and efficiency of heat dissipation.

[0040] At the same time, both ends of the connecting pipe 6 are equipped with quick-release heads 9 to facilitate disassembly, assembly and maintenance of the heat transfer oil circulation system.

[0041] This device achieves high efficiency in dust particle transportation and stable heat dissipation through the combined application of internal structure optimization and heat dissipation mechanism.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A 90-degree arc workpiece, comprising a pipe (1), characterized in that: The inner cavity of the pipe (1) is bent at 90 degrees from the input end to the output end, and the cross section of the inner cavity transitions from a circle to a square and then back to a circle. The square cross section and the circular cross section of the pipe (1) are smoothly transitioned. Both ends of the pipe (1) are fixedly connected with flanges (3). The outer wall of the pipe (1) is provided with a 45-degree inclined surface, which is communicated with the inside of the pipe (1) and is provided with an inspection plate (4). The outer wall of the inspection plate (4) is fixedly connected with a connecting portion (10). The bottom curvature of the connecting portion (10) smoothly transitions with the square cross section of the pipe (1). A sealing strip is provided on the contact surface between the inspection plate (4) and the outer wall of the pipe (1). The angle between the input end and the output end of the pipe (1) is 90 degrees. A heat dissipation cavity (18) is opened in the pipe (1), and heat transfer oil is injected into the heat dissipation cavity (18). A heat dissipation mechanism for dissipating heat from the heat transfer oil is installed on the outer wall of the inspection plate (4).

2. The 90-degree celestial-circular-square inner arc workpiece according to claim 1, characterized in that: The heat dissipation mechanism comprises inclined blades (11) rotatably connected to the bottom of the connection part (10), and the blades on the inclined blades (11) all have a certain inclination arc, and the inclination angle is forty-five degrees.

3. The 90-degree celestial-circular-square inner arc workpiece according to claim 2, characterized in that: The outer wall of the inspection plate (4) is fixedly connected to a device cylinder (5), the inner bottom of the device cylinder (5) is rotatably connected to a reciprocating screw (12), the reciprocating screw (12) is coaxially fixedly connected to the inclined blade (11), and the outer wall of the inspection plate (4) is fixedly connected to multiple groups of heat dissipation fins (2), and the multiple groups of heat dissipation fins (2) all extend into the interior of the device cylinder (5) and fit the inner wall of the device cylinder (5).

4. The 90-degree celestial-circular-square inner arc workpiece according to claim 3, characterized in that: A screw sleeve (14) is threadedly connected to the threaded section of the reciprocating screw (12), a connecting rod (17) is fixedly connected to the end surface of the screw sleeve (14), and a piston (15) is fixedly connected to the end of the connecting rod (17) and is in close contact with the inner wall of the device cylinder (5).

5. The 90-degree celestial-circular-square inner arc workpiece according to claim 4, characterized in that: Two groups of connecting pipes (6) are installed on the outer wall of the device tube (5), and the two ends are respectively connected to the inside of the device tube (5) and the heat dissipation chamber (18), and both are internally installed with a one-way valve. The two ends of the two groups of connecting pipes (6) are both installed with quick-release heads (9), and are respectively fixedly connected to the pipe fitting (1) and the device tube (5).

6. The 90-degree celestial-circular-square inner arc workpiece according to claim 5, characterized in that: The inner bottom of the device cylinder (5) is fixedly connected to a limit rod (13), the screw sleeve (14) is slidably connected to the outer wall of the limit rod (13), and the end of the reciprocating screw (12) is fixedly connected to a limit block (16).

7. The 90-degree celestial-circular-square inner arc workpiece according to claim 6, characterized in that: The radius of the limit block (16) is greater than the radius of the reciprocating screw (12); the inspection plate (4) is connected to the pipe fitting (1) via screws (8); and two sets of handles (7) are installed on the outer wall of the inspection plate (4).

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