A double shaft screw cooler

Abstract

A double-shaft spiral cooler, comprising a shell, two pipe shafts are installed in the shell, and spiral blades are installed on each pipe shaft; the pipe shaft is a hollow structure, one end of the pipe shaft is connected with a main water inlet, and the other end of the pipe shaft is connected with a main water outlet; the spiral blades are discontinuously arranged in a spiral shape by a plurality of blade segments, a cooling chamber is formed in each blade segment, and the cooling chamber is communicated with the pipe shaft through a first water inlet and a first water outlet. The double-shaft spiral cooler can cool high-temperature materials, and meanwhile, the structure of the double-shaft spiral cooler is prevented from being damaged and deformed by high temperature.

Description

Technical Field

[0001] This utility model relates to the field of coolers, and in particular to a dual-axis spiral cooler. Background Technology

[0002] The slag temperature at the bottom of the incinerator reaches over 1000℃, which is difficult for ordinary conveying equipment to withstand. High temperatures can cause welded joints to detach, deform, or even melt. Therefore, the current method is to cool the slag before conveying it. For example, when conveying high-temperature waste liquid inorganic salts, to ensure smooth conveying with ordinary equipment, the high-temperature waste liquid inorganic salts are cooled to 300-400℃, changing them from a liquefied state to a solid or semi-molten state. However, cooling the slag presents a challenge for the cooling equipment. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a dual-axis spiral cooler that can cool high-temperature materials while avoiding structural damage and deformation due to high temperature.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A dual-shaft spiral cooler includes a shell, inside which two tube shafts are installed, each tube shaft having spiral blades mounted on it; the tube shafts are hollow, with one end connected to a main water inlet and the other end connected to a main water outlet; the spiral blades are composed of multiple blade sections arranged intermittently in a spiral shape, each blade section forming a cooling chamber, and the cooling chambers are connected to the tube shafts through a first water inlet and a first water outlet.

[0005] The inner wall of the tube shaft has grooves on the left and right sides along its length, and longitudinal partitions are placed in the grooves on the left and right sides to divide the tube shaft into an inlet chamber and an outlet chamber.

[0006] The longitudinal partition and the groove are sealed by a sealing strip.

[0007] Each blade section includes a helical side plate and a flat side plate. The inner edges of the helical side plate and the flat side plate are fixed to the tube shaft, and the outer edges of the helical side plate and the flat side plate are sealed by an arc-shaped side plate. One end of the helical side plate and the flat side plate are brought together, and the other end of the helical side plate and the flat side plate are sealed by a sealing plate.

[0008] A water-cooling jacket is fixed to the outside of the housing. A second water inlet is opened at the bottom of one end of the water-cooling jacket, and a second water outlet is opened at the top of the other end of the water-cooling jacket.

[0009] The water-cooled jacket has multiple transverse partitions fixed along its length. Each transverse partition has a water inlet hole at the bottom and a water outlet and air outlet hole on one side at the top.

[0010] Each tube shaft is equipped with a driven gear, and the two driven gears mesh with each other; one of the tube shafts is driven by a chain conveyor and a motor.

[0011] This utility model provides a dual-shaft spiral cooler, which has the following technical effects: 1) By setting the spiral blades to be arranged at intervals, and forming a cavity in each blade section, a flow is formed between the cavity and the tube shaft; in addition, longitudinal baffles are arranged on the tube shaft, so that after water enters the tube shaft, it enters the cavity of the blade through the hole on the tube shaft to quickly cool the blade surface, and then enters the water outlet cavity of the tube shaft through the hole on the tube shaft, forming a complete cooling flow path; the heat of the spiral blades is quickly carried away.

[0012] 2) By setting up a water-cooled jacket, the water-cooled jacket is divided into many small chambers by partitions. The lower end of the partition has water inlet holes, and the upper end has water outlet holes and air vents. Water flows through each chamber and fills it, continuously carrying away the dissipated heat, so that the surface of the shell is cooled over a large area, preventing the shell from deforming and being damaged.

[0013] 3) The two helical blades are arranged on the left and right sides with the same pitch, one rotating left and the other right. The two helical blades overlap each other to a certain extent, but the blades on the two shafts are staggered to prevent the blades from interfering with each other when the two blade shafts move towards each other. At the same time, this arrangement can also remove the material adhering to the tube shaft.

[0014] 4) When this device is used for material cooling, it adopts a small-pitch spiral blade arrangement and a large and small sprocket drive at the drive point to reduce the rotational speed of the spiral blade shaft, extend the material's movement time in the equipment, and make the temperature drop efficiently. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is the left view of the present invention.

[0017] Figure 3 This is a front view of a helical blade with one pitch in this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of one blade section in this utility model.

[0019] Figure 5 This is a left view of the helical blade in this utility model.

[0020] Figure 6 This is a front view of a single spiral shaft in this utility model.

[0021] Figure 7 This is a front view of the double helical shaft in this utility model.

[0022] Figure 8 This is a left view of the water-cooling jacket in this utility model.

[0023] In the diagram: 1. Main inlet; 2. First rotary joint; 3. Bearing seat; 4. Pipe shaft; 5. Housing; 6. Housing outlet; 7. Spiral blade; 8. Housing inlet; 9. Bearing assembly; 10. Driven gear; 11. Sprocket; 12. Second rotary joint; 13. Main outlet; 14. Second inlet; 15. Water cooling jacket; 16. Second outlet; 17. First inlet; 18. First outlet; 19. Sealing strip; 20. Longitudinal partition; 21. Inlet chamber; 22. Outlet chamber; 23. Motor; 24. Drive sprocket; 25. Transverse partition; 26. Inlet hole; 27. Outlet and vent hole. Detailed Implementation

[0024] like Figures 1-2 As shown, a dual-shaft spiral cooler includes a housing 5, within which two sets of tubular shafts 4 are arranged, each set of shafts 4 having spiral blades 7. Both ends of the two sets of tubular shafts 4 extend outside the housing 5 and are rotatably mounted on a support via bearing assemblies 9 and bearing seats 3. Each tubular shaft 4 is equipped with a driven gear 10, and the two driven gears 10 mesh with each other. One set of tubular shafts 4 is equipped with a driven sprocket 11, and a chain is wound between the driven sprocket 11 and a driving sprocket 24, which is driven by a motor 23. When the motor 23 rotates, the two sets of tubular shafts 4 rotate in opposite directions.

[0025] like Figure 1 As shown, the tube shaft 4 has a hollow structure. One end of the tube shaft 4 is connected to the main water inlet 1 through the first rotary joint 2, and the coolant enters the tube shaft 4 through the main water inlet 1. The other end of the tube shaft 4 is connected to the main water outlet 13 through the second rotary joint 12, and the coolant flows out of the tube shaft 4 through the main water outlet 13.

[0026] like Figure 5 As shown, the inner wall of the tube shaft 4 has grooves on the left and right sides along its length. The longitudinal partition 20 is placed in the grooves on the left and right sides and sealed by the sealing strip 19 to prevent water overflow. The longitudinal partition 20 divides the tube shaft 4 into an inlet chamber 21 and an outlet chamber 22.

[0027] like Figures 3-4 , Figure 6As shown, the helical blade 7 comprises multiple blade segments, which together form a helical shape, with adjacent blade segments arranged intermittently. Each helical blade within a given pitch range is equally divided into two blade segments. Each blade segment includes a helical side plate 7.1 and a flat side plate 7.2. The inner edges of the helical side plate 7.1 and the flat side plate 7.2 are fixed to the tube shaft 4, while the outer edges of the helical side plate 7.1 and the flat side plate 7.2 are sealed by an arc-shaped side plate 7.3. One end of the helical side plate 7.1 and the flat side plate 7.2 is brought together, and the other end of the helical side plate 7.1 and the flat side plate 7.2 is sealed by a sealing plate 7.4. Thus, each blade segment has an irregular structure, forming a triangular-like structure in horizontal projection, creating a cooling chamber inside. By setting the helical blade 7 to be broken into multiple segments, the time the material spends within the device can be effectively increased, allowing for sufficient heat exchange within the shell cavity. Simultaneously, it also provides a crushing function, further enhancing the cooling effect of the material. In addition, the discontinuous spiral blade 7 is more flexible for materials with different characteristics. It can flexibly adjust the pitch, gap and arrangement of adjacent blade sections, making it more widely applicable to materials.

[0028] The outer wall of the spiral side plate 7.1 here is the working surface.

[0029] like Figure 5 As shown, each blade section has a first inlet 17 and a first outlet 18 arranged between its cooling chamber and the tube shaft 4. Cooling water from the inlet chamber 21 enters the blade section through the first inlet 17, flows along the cooling chamber within the blade section, and then flows out through the first outlet 18 into the outlet chamber 22. This forms a complete cooling flow path. When material falls, it comes into contact with the spiral blades. To reduce damage to the spiral blades, cooling circulating water is introduced into the spiral blades, and the constant-speed water flow continuously carries away the heat from the surface of the spiral blades.

[0030] like Figure 8 As shown, a water-cooling jacket 15 is fixed to the outside of the housing 5. The water-cooling jacket 15 is arranged along the length of the housing 5 and covers the housing 5. A cooling zone is formed inside the water-cooling jacket 15. A second water inlet 14 is opened at the bottom of one end of the water-cooling jacket 15, and a second water outlet 16 is opened at the upper part of the other end of the water-cooling jacket 15. Cooling water enters into the water-cooling jacket 15 through the second water inlet 14, and after fully cooling the housing 5, it flows out from the second water outlet 16.

[0031] In addition, multiple transverse baffles 25 are fixed along the length of the water-cooling jacket 15. Each transverse baffle 25 has multiple water inlet holes 26 at its bottom and multiple water outlet holes 27 on one side of its upper end. By setting the transverse baffles 25, the water flow speed can be slowed down, thereby allowing the cooling water to fully contact the side wall of the shell 5 and improving the cooling effect.

[0032] Working principle and process: 1) When this device is working, cooling water first enters from the inlet 1. As it passes through the tube shaft 4, the water in the inlet chamber 21 of the tube shaft 4 enters each blade section of the spiral blade 7 through the first inlet 17. After cooling each blade section of the spiral blade 7, it flows into the outlet chamber 22 of the tube shaft 4 through the first outlet 18. As this structure rotates, the heat of the tube shaft 4 and the spiral blade 7 is carried away as quickly as possible. Finally, the cooling water flows out from the main outlet 13.

Claims

1. A twin-shaft spiral cooler, comprising a housing (5), wherein two tube shafts (4) are installed inside the housing (5), and each tube shaft (4) is equipped with spiral blades (7); characterized in that: The tube shaft (4) is a hollow structure. One end of the tube shaft (4) is connected to the main water inlet (1) and the other end is connected to the main water outlet (13). The spiral blade (7) consists of multiple blade sections arranged in a spiral discontinuous manner. Each blade section forms a cooling chamber. The cooling chamber is connected to the tube shaft (4) through the first water inlet (17) and the first water outlet (18).

2. The twin-shaft spiral cooler according to claim 1, characterized in that: The inner wall of the tube shaft (4) has grooves on the left and right sides along the length direction. The longitudinal partition (20) is placed in the grooves on the left and right sides and divides the tube shaft (4) into an inlet chamber (21) and an outlet chamber (22).

3. A twin-shaft spiral cooler according to claim 2, characterized in that: The longitudinal partition (20) is sealed to the groove by a sealing strip (19).

4. A twin-shaft spiral cooler according to claim 1, characterized in that: Each blade section includes a helical side plate (7.1) and a flat side plate (7.2). The inner edges of the helical side plate (7.1) and the flat side plate (7.2) are fixed to the tube shaft (4). The outer edges of the helical side plate (7.1) and the flat side plate (7.2) are sealed by an arc-shaped side plate (7.3). One end of the helical side plate (7.1) and the flat side plate (7.2) are brought together, and the other end of the helical side plate (7.1) and the flat side plate (7.2) is sealed by a sealing plate (7.4).

5. A twin-shaft spiral cooler according to claim 1, characterized in that: The shell (5) is fixed with a water-cooling jacket (15). A second water inlet (14) is opened at the bottom of one end of the water-cooling jacket (15), and a second water outlet (16) is opened at the top of the other end of the water-cooling jacket (15).

6. A twin-shaft spiral cooler according to claim 5, characterized in that: The water-cooled jacket (15) has multiple transverse partitions (25) fixed along its length. Each transverse partition (25) has a water inlet hole (26) at its bottom and a water outlet hole (27) on one side of its upper end.

7. A twin-shaft spiral cooler according to claim 1, characterized in that: Each tube shaft (4) is equipped with a driven gear (10), and the two driven gears (10) mesh with each other; one of the tube shafts (4) is driven by a chain transmission mechanism and a motor (23).

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