A water inlet and return flange structure for a segmented spiral discharger

Abstract

The present invention relates to an inlet and return water flange structure for a segmented spiral discharging machine, comprising a flange body, the flange body comprising a pressure plate, a left shaft segment and a right shaft segment arranged in sequence along the axial direction, the outer diameter of the left shaft segment being adapted to the inner diameter of the return water outer pipe, and the outer diameter of the right shaft segment being adapted to the inner diameter of the return water inner pipe; a hollow cavity is provided in the flange body, a first through hole connecting the return water cavity and the hollow cavity is provided on the right shaft segment, and a right through hole connecting the hollow cavity and the inner cavity of the return water inner pipe is provided; a left through hole is further provided in the flange body on the side of the hollow cavity away from the right through hole, a buffer cavity is formed between the cavity wall of the hollow cavity and the outer wall of the water inlet pipe, and a second through hole is provided on the periphery of the left through hole. The flange body of the present invention is an integral structure with high strength and high rigidity, which not only provides strong support for the entire spiral discharging machine so that high-temperature materials can be scraped and discharged smoothly, but also keeps the formed inlet and return water channels unobstructed and stable, providing sufficient cooling capacity for the spiral discharging machine.

Description

Technical Field

[0001] The invention relates to the technical field of rotary hearth furnace equipment, and in particular to a water inlet and return flange structure for a segmented spiral discharging machine. Background Art

[0002] The most notable feature of a rotary hearth furnace is its rotating hearth, while the incoming material is evenly distributed above it and remains stationary relative to the bottom. The product, after a high-temperature reaction, needs to be discharged from the bottom. This device, a screw discharging device, uses spiral blades on the outer cylindrical surface of the rotating shaft to push the hot material in the discharge direction. Screw discharging devices operate in high-temperature environments exceeding 1000°C for extended periods, requiring forced cooling with water to ensure long-term stable operation. For screw discharging devices with a three-section load-bearing shaft and the inlet and return water systems on the same side, the intermediate shaft inlet and return water connection flange plays a crucial role. Currently, the intermediate shaft inlet and return water connection flange only serves as a support, requiring external piping to connect the return water chamber between the outer and inner return water pipes to the cooling water pipeline for cooling water circulation. This results in the flange structure occupying a large external space, and the piping must be assembled on-site, increasing the installation workload. Summary of the Invention

[0003] In response to the deficiencies in the prior art, the present invention provides an inlet and return water flange structure for a segmented spiral discharging machine. By improving the structure of the flange, the space occupied by the connecting flange is greatly reduced, while the construction workload at the installation site is reduced. This ensures that the inlet and return water flow normally and provides strong support for the intermediate shaft.

[0004] The present invention is achieved through the following technical solutions, providing an inlet and return water flange structure for a segmented spiral discharging machine, comprising a flange body fixedly connected to the ends of a return water outer pipe and a return water inner pipe, a return water cavity being formed between the return water outer pipe and the return water inner pipe, the flange body comprising a pressure plate, a left shaft segment and a right shaft segment arranged in sequence along the axial direction, the outer diameters of the pressure plate, the left shaft segment and the right shaft segment decreasing in sequence, the outer diameter of the left shaft segment being adapted to the inner diameter of the return water outer pipe, and the outer diameter of the right shaft segment being adapted to the inner diameter of the return water inner pipe;

[0005] A hollow cavity is provided in the flange body, and a first through hole connecting the return water cavity and the hollow cavity, as well as a right through hole connecting the hollow cavity and the inner cavity of the return water inner tube are provided on the right shaft section. A left through hole is also provided in the flange body, which is located on the side of the hollow cavity away from the right through hole. The water inlet pipe passes through the left through hole, the hollow cavity and the right through hole in sequence, and a seal is provided between the water inlet pipe and the hole wall of the left through hole, as well as between the water inlet pipe and the hole wall of the right through hole. A buffer cavity is formed between the cavity wall of the hollow cavity and the outer wall of the water inlet pipe. A second through hole is provided on the periphery of the left through hole, which passes through the left end face of the flange body to the buffer cavity.

[0006] When this solution is in use, the water inlet pipe is passed through the left through hole, the hollow cavity and the right through hole in sequence, and the cooling water enters the return water inner pipe through the water inlet pipe. The cooling water after heat exchange flows back from the return water cavity and enters the buffer cavity through the first through hole, and then flows out from the buffer cavity through the second through hole to the return water pipe, thereby realizing the water inlet and return through the inside of the flange. There is no need to set a pipe outside the flange to connect the inlet and return pipes, which simplifies the pipe structure.

[0007] As an optimization, the second through-holes are circumferentially elongated, and each second through-hole is evenly distributed along the circumference. This optimization solution increases the passage area by configuring the second through-holes as elongated, ensuring smooth cooling water flow. The even distribution of the second through-holes along the circumference improves the consistency of cooling water outflow at all locations in the buffer chamber and avoids localized turbulence.

[0008] As an optimization, the pressure plate is provided with a plurality of bolt holes distributed along the circumference, and the bolt holes penetrate the pressure plate axially. This optimization solution facilitates the fastening of the flange body and the bearing seat by bolts by providing the bolt holes, making installation more convenient and easy to disassemble.

[0009] As an optimization, the hollow cavity is coaxial with the left through hole and the right through hole. The setting of this optimization solution facilitates the processing of the hollow cavity, realizes one-time clamping processing, and reduces the processing difficulty of the hollow cavity.

[0010] As an optimization, the first through-holes are circular holes that radially penetrate the right shaft segment, and the first through-holes are evenly distributed along the circumference. This optimization solution sets the first through-holes as circular holes for easier processing. By evenly distributing the first through-holes along the circumference, cooling water flows evenly from the return chamber into the buffer chamber, improving the cooling water circulation efficiency.

[0011] The beneficial effects of the present invention are as follows: the flange body is an integral structure with high strength and high rigidity. It not only provides strong support for the entire spiral discharging machine so that the high-temperature material can be scraped and discharged smoothly, but also keeps the formed water inlet and return channels unobstructed and stable, providing sufficient cooling capacity for the spiral discharging machine, thereby greatly extending the service life of the equipment, improving the equipment operation rate and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention;

[0013] Figure 2 It is a left side view of the present invention;

[0014] Figure 3 For the present invention, a state diagram is used;

[0015] As shown in the figure:

[0016] 1. Flange body, 2. Left through hole, 3. Second through hole, 4. Pressure plate, 5. Left shaft section, 6. Right shaft section, 7. Right through hole, 8. Hollow cavity, 9. First through hole, 10. Water inlet pipe, 11. Return water outer pipe, 12. Return water inner pipe, 13. Buffer chamber. DETAILED DESCRIPTION

[0017] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0018] like Figure 1 The shown structure is a water inlet and return flange structure for a segmented spiral discharging machine, comprising a flange body 1 fixedly connected to the ends of a return water outer pipe 11 and a return water inner pipe 12, a return water cavity being formed between the return water outer pipe and the return water inner pipe, the flange body 1 comprising a pressure plate 4, a left shaft section 5 and a right shaft section 6 arranged in sequence along the axial direction, the pressure plate 4, the left shaft section 5 and the right shaft section 6 being an integrated structure, the outer diameters of the pressure plate, the left shaft section and the right shaft section decreasing in sequence, the outer diameter of the left shaft section being adapted to the inner diameter of the return water outer pipe, and the outer diameter of the right shaft section being adapted to the inner diameter of the return water inner pipe.

[0019] The flange body is provided with a hollow cavity 8. The right shaft section is provided with a plurality of first through-holes 9 connecting the return water cavity with the hollow cavity, as well as a plurality of right through-holes 7 connecting the hollow cavity with the inner cavity of the return water inner tube. The first through-holes are circular holes extending radially through the right shaft section and are evenly distributed circumferentially. To better meet the requirements of cooling water circulation, the first through-holes in this embodiment have a diameter of 50 mm and are provided in six locations.

[0020] The central axis of the right through hole 7 coincides with the central axis of the flange body, and the aperture of the right through hole matches the outer diameter of the water inlet pipe 10 .

[0021] A left through hole 2 is also provided in the flange body, which is located on the side of the hollow cavity away from the right through hole. The left through hole passes through the hollow cavity to the left end face of the flange body. The left through hole is coaxial with the right through hole, and the aperture of the left through hole is consistent with the aperture of the right through hole. The water inlet pipe 10 passes through the left through hole 2, the hollow cavity 8 and the right through hole 7 in sequence, and the water inlet pipe and the hole wall of the left through hole, as well as the water inlet pipe and the hole wall of the right through hole are sealed.

[0022] The hollow cavity is coaxial with the left and right through-holes, and the diameters of both the left and right through-holes are smaller than the inner diameter of the hollow cavity. After the water inlet pipe passes through the flange body, a buffer cavity 13 is formed between the cavity wall of the hollow cavity and the outer wall of the water inlet pipe. A second through-hole 3 is defined around the periphery of the left through-hole, extending from the left end face of the flange body to the buffer cavity. As an optimized solution, the second through-holes in this embodiment are elongated holes extending circumferentially, and the second through-holes are evenly distributed along the circumference.

[0023] The pressure plate is provided with a plurality of bolt holes distributed along the circumferential direction, and the bolt holes penetrate the pressure plate along the axial direction. By providing the bolt holes, it is convenient to fix the pressure plate to the bearing seat by bolts.

[0024] In actual use, the water inlet pipe 10 connected to the rotary joint passes through the left through hole 2 and the right through hole 7 and is fixedly connected to the flange body 1. The cooling water flows from the water inlet pipe 10 into the return water inner pipe 12 fixedly connected to the right axial section of the flange body 1, and returns from the other end of the return water inner pipe into the annular return water cavity between the return water inner pipe and the return water outer pipe, and then passes through the first through hole 9, the buffer cavity and the second through hole 3 in turn, and finally flows out through the rotary joint to complete the cooling of the spiral discharging machine.

[0025] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by adopting existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A water inlet and return flange structure for a segmented spiral discharger, comprising a flange body (1) fixedly connected to the ends of a water return outer pipe (11) and a water return inner pipe (12), wherein a water return cavity is formed between the water return outer pipe and the water return inner pipe, characterized in that: The flange body (1) comprises a pressure plate (4), a left shaft section (5) and a right shaft section (6) arranged in sequence along the axial direction, wherein the outer diameters of the pressure plate, the left shaft section and the right shaft section decrease in sequence, the outer diameter of the left shaft section is adapted to the inner diameter of the return water outer pipe, and the outer diameter of the right shaft section is adapted to the inner diameter of the return water inner pipe; A hollow cavity (8) is provided in the flange body, a first through hole (9) connecting the return water cavity and the hollow cavity, and a right through hole (7) connecting the hollow cavity and the inner cavity of the return water inner tube are provided on the right shaft section, a left through hole (2) is further provided in the flange body, which is located on the side of the hollow cavity away from the right through hole, the water inlet pipe (10) passes through the left through hole (2), the hollow cavity (8) and the right through hole (7) in sequence, and a seal is provided between the water inlet pipe and the hole wall of the left through hole, and between the water inlet pipe and the hole wall of the right through hole, a buffer cavity is formed between the cavity wall of the hollow cavity and the outer wall of the water inlet pipe, and a second through hole (3) is provided on the periphery of the left through hole, which passes through from the left end face of the flange body to the buffer cavity; The pressure plate is provided with a plurality of bolt holes distributed along the circumferential direction, and the bolt holes penetrate the pressure plate along the axial direction; The hollow cavity is coaxial with the left through hole and the right through hole.

2. The water inlet and return flange structure for a segmented spiral discharger according to claim 1, characterized in that: The second through holes are long strip holes extending along the circumferential direction, and the second through holes are evenly distributed along the circumferential direction.

3. The water inlet and return flange structure for a segmented spiral discharger according to claim 1 or 2, characterized in that: The first through holes are circular holes that penetrate the right shaft segment in the radial direction, and the first through holes are evenly distributed in the circumferential direction.

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