A rotary joint and a charging device

Abstract

The utility model belongs to fluid transmission equipment technical field discloses a rotary joint and feeding device, including first connecting piece, fixed shaft and second connecting piece, the first sleeve inner baffle of first connecting piece divides annular first cavity into first, second sub -cavity, the second, third sleeve of second connecting piece respectively with fixed shaft sealed rotation connection forms second, third cavity, and the fixed shaft middle plugging forms fourth, fifth cavity, and through the flow channel hole that evenly arranged is in the circumference and realizes each cavity intercommunication, constitutes two groups of independent liquid flow channel. The utility model discloses a kind of feeding device, including feed cylinder, chute and above-mentioned rotary joint, feed cylinder and chute are formed cooling flow channel by double-layer structure and partition plate, and cooling liquid circulation is realized with the cooperation of rotary joint flow channel. The utility model solves the problem that existing rotary joint only has one-way flow channel, and is suitable for high-temperature rotary working condition of ore-heating furnace etc.

Description

Technical Field

[0001] This utility model belongs to the technical field of fluid transmission equipment, and specifically relates to a rotary joint and a feeding device. Background Technology

[0002] In the industrial production field, rotary joints, as key components for realizing fluid transfer between rotating equipment and fixed pipelines, are widely used in chemical, metallurgical, papermaking, mining and other scenarios that require the rotational transfer of liquids or gases.

[0003] Most existing rotary joints only have a unidirectional liquid flow channel, which limits their application scenarios in industrial production. Utility Model Content

[0004] One objective of this utility model is to provide a rotary joint, comprising a first connecting member, a fixed shaft, and a second connecting member; The first connecting member includes a first sleeve sleeved on a fixed shaft and a bearing support. The bearing support is disposed on both sides of the first sleeve and fixedly connected to the fixed shaft. An annular first cavity is formed between the first sleeve and the fixed shaft. A partition plate perpendicularly connected to the fixed shaft is provided inside the first sleeve. The partition plate divides the first cavity into a first sub-cavity and a second sub-cavity. The first sub-cavity is provided with a first flow channel hole, and the second sub-cavity is provided with a second flow channel hole. The second connecting member includes a second sleeve and a third sleeve sleeved at both ends of a fixed shaft. The second sleeve and the third sleeve are respectively sealed and rotatably connected to the fixed shaft. A second cavity is formed between the second sleeve and the fixed shaft. The second cavity is provided with a third flow channel hole. A third cavity is formed between the third sleeve and the fixed shaft. The third cavity is provided with a fourth flow channel hole. The fixed shaft is a hollow shaft, and the middle position of the fixed shaft is sealed, so that a fourth cavity and a fifth cavity are formed on both sides respectively. The fourth cavity is provided with a fifth flow channel hole communicating with the first sub-cavity and a sixth flow channel hole communicating with the second cavity. The fifth cavity is provided with a seventh flow channel hole communicating with the second sub-cavity and an eighth flow channel hole communicating with the third cavity.

[0005] Furthermore, multiple fifth and seventh flow channel holes are evenly distributed along the circumference of the fixed axis, and the sixth and eighth flow channel holes are located at both ends of the fixed axis.

[0006] Furthermore, a rotary sealing mechanism is provided between the second sleeve and the fixed shaft, and between the third sleeve and the fixed shaft. The rotary sealing mechanism includes a bearing seat disposed between the second sleeve and the fixed shaft. The bearing seat adopts a stepped diameter-reducing coaxial cylindrical structure. The bearing seat has a first step, a second step, and a third step with successively reduced diameters. The outer surface of the first step is fixed to the inner wall of the second sleeve, and its inner surface is in a sealing rotational fit with the fixed shaft. A tapered roller bearing is provided between the second step and the fixed shaft. The third step is in a sealing rotational fit with the fixed shaft, and support bosses are evenly spaced around the third step. The support bosses are fixed to the second sleeve, and a flow channel for liquid circulation is formed between adjacent support bosses.

[0007] Furthermore, a bearing sealing seat and a bearing sealing cover are provided between the first step and the fixed shaft, and a first carbon fiber packing is provided between the bearing sealing seat and the bearing sealing cover.

[0008] Furthermore, a positioning nut is provided on the side of the tapered ball bearing on the fixed shaft, and a spring-loaded nut is provided between the end of the fixed shaft and the bearing seat. Along the direction from the positioning nut to the spring-loaded nut, an inner washer, a second carbon fiber packing, an outer washer, and a butterfly-shaped compression spring are provided in sequence between the fixed shaft and the third step.

[0009] Another objective of this utility model is to provide a feeding device, including a feeding cylinder, a chute, and the aforementioned rotary joint, wherein the rotary joint is disposed between the feeding cylinder and the chute, the first connecting member is connected to the feeding cylinder, and the second connecting member is connected to the chute.

[0010] Furthermore, the feed cylinder is vertically continuous, and the cylinder wall adopts a double-layer structure. A first partition plate is provided inside the cylinder wall. The first partition plate divides the cavity between the inner wall and the outer wall of the feed cylinder into a liquid inlet channel and a liquid outlet channel. The first sub-cavity is connected to the liquid inlet channel through a first flow channel hole, and the second sub-cavity is connected to the liquid outlet channel through a second flow channel hole.

[0011] Furthermore, the chute adopts a double-layer structure, and a second partition plate is provided inside the chute. The second partition plate divides the chute into a first cooling channel on the left and a second cooling channel on the right. One end of the first cooling channel is connected to one end of the second cooling channel. Connecting cavities are respectively provided on the upper part of both sides of the chute. One end of the first cooling channel is connected to one side connecting cavity, and one end of the second cooling channel is connected to the other side connecting cavity. The two connecting cavities are respectively fitted into a second sleeve and a third sleeve. The second sleeve is connected to the corresponding connecting cavity through a third channel hole, and the third sleeve is connected to the corresponding connecting cavity through a fourth channel hole.

[0012] The present invention has the following beneficial effects.

[0013] 1. In the rotary joint of this utility model, the first connecting member, the fixed shaft and the second connecting member are connected in sequence and form two sets of independent flow channels. The liquid flow direction in the two sets of independent flow channels can be the same or opposite, which makes it more widely used in industrial production. At the same time, it solves the problem of crossflow in the unidirectional flow channel or non-isolated flow channel of the existing rotary joint.

[0014] 2. This utility model incorporates a rotary sealing mechanism. The bearing housing adopts a stepped diameter reduction structure, giving it a first step, a second step, and a third step. The first step, located on both sides, is used to fix the second and third sleeves respectively, while simultaneously sealing with the fixed shaft to prevent liquid leakage to the outside. The second step supports the fixed shaft through tapered roller bearings, bearing radial and circumferential loads, ensuring rotational stability, and reducing wear. The third step is fixedly connected to the second and third sleeves using a support boss, and prevents liquid leakage into the tapered roller bearing area through components such as spring-loaded nuts, wing-shaped springs, and second carbon fiber packing. In the feeding device of this utility model, the feed cylinder and chute are rotatably connected by a rotary joint, forming a cooling circuit for coolant flow, providing cooling and heat dissipation for the feeding device to feed materials into the submerged arc furnace. The tapered roller bearings cooperate with the second step to generate radial and axial loads, adapting to the dynamic load changes when the chute reciprocates around the fixed shaft, ensuring the stability of the rotary joint during frequent rotation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of the rotary joint in this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the rotary joint in this utility model.

[0017] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0018] Figure 4 yes Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0019] Figure 5 yes Figure 1 A schematic diagram of the cross-sectional structure at point CC.

[0020] Figure 6 This is a schematic diagram of the connection structure between the rotary joint and the feed cylinder and the chute.

[0021] Figure 7 This is a schematic diagram of the flow trajectory of the coolant in the feed cylinder, rotary joint and chute in this utility model.

[0022] Figure 8 yes Figure 7A schematic diagram of the cross-sectional structure at point DD.

[0023] Figure 9 yes Figure 7 A schematic diagram of the cross-sectional structure at the EE section.

[0024] In the diagram: 100, First connecting piece; 110, First sleeve; 111, First sub-cavity; 112, Second sub-cavity; 113, First flow channel hole; 114, Second flow channel hole; 115, Partition plate; 120, Bearing support; 121, Sleeve; 200, Second connecting piece; 210, Second sleeve; 211, Third flow channel hole; 212, Second cavity; 220, Third sleeve; 221, Fourth flow channel hole; 222, Third cavity; 223, Sealing cap; 300, Fixed shaft; 301, Threaded sleeve; 302, Plug; 310, Fourth cavity; 311, Fifth flow channel hole; 312, Sixth flow channel hole; 320, Fifth cavity; 321, Seventh flow channel hole; 322, ... Eight-channel bore; 410, bearing housing; 411, first step; 412, second step; 413, third step; 414, support boss; 420, bearing seal seat; 421, bearing seal gland; 422, first carbon fiber packing; 430, tapered roller bearing; 440, locating nut; 450, inner washer; 451, second carbon fiber packing; 452, outer washer; 453, O-ring seal; 454, butterfly compression spring; 460, spring compression nut; 500, feed cylinder; 501, first partition plate; 502, liquid inlet channel; 503, liquid outlet channel; 600, chute; 601, second partition plate; 602, first cooling channel; 603, second cooling channel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Example 1

[0027] Reference Figure 1 This embodiment discloses a rotary joint, including a first connector 100, a fixed shaft 300, and a second connector 200. The first connector 100 and the second connector 200 are rotatably connected through the fixed shaft 300, and the first connector 100, the fixed shaft 300, and the second connector 200 are sequentially connected to provide a liquid flow channel.

[0028] The first connecting member 100 includes a first sleeve 110, on both sides of which bearing supports 120 are symmetrically provided. A sleeve 121 passes through the bearing support 120 and is fitted and fixed to the fixed shaft 300 by welding. The first sleeve 110 is fitted in the middle position of the fixed shaft 300. The first sleeve 110, the side wall of the bearing support 120 and the fixed shaft 300 form a first cavity with an annular structure.

[0029] Reference Figure 2 and Figure 3 The first sleeve 110 is provided with an annular partition 115. The inner side of the partition 115 is perpendicularly connected to the fixed shaft 300, and the outer side is perpendicularly connected to the first sleeve 110. The partition 115 is located on the center line of the fixed shaft 300 and divides the first cavity into a first sub-cavity 111 and a second sub-cavity 112. The first sleeve 110 is provided with a first flow channel hole 113 and a second flow channel hole 114, wherein the first flow channel hole 113 is located in the first sub-cavity 111, and the second flow channel hole 114 is located in the second sub-cavity 112.

[0030] Reference Figure 2 The second connecting member 200 includes a second sleeve 210 and a third sleeve 220 symmetrically arranged on the fixed shaft 300. Both the second sleeve 210 and the third sleeve 220 are rotatably and sealingly fitted onto the ends of the fixed shaft 300. Each end of the second sleeve 210 and the third sleeve 220 is provided with a sealing cap 223. The second sleeve 210 and the third sleeve 220 have the same structure. The gap between the second sleeve 210 and the fixed shaft 300 forms a second cavity 212, and the gap between the third sleeve 220 and the fixed shaft 300 forms a third cavity 222. The second sleeve 210 has a third flow channel hole 211 communicating with the second cavity 212, and the third sleeve 220 has a fourth flow channel hole 221 communicating with the third cavity 222.

[0031] The fixed shaft 300 has a fourth cavity 310 and a fifth cavity 320 on both sides of its middle position. The fourth cavity 310 has a fifth flow channel hole 311 and a sixth flow channel hole 312. The fourth cavity 310 is connected to the first sub-cavity 111 through the fifth flow channel hole 311 and to the second cavity 212 through the sixth flow channel hole 312. Similarly, the fifth cavity 320 has a seventh flow channel hole 321 and an eighth flow channel hole 322. The fifth cavity 320 is connected to the second sub-cavity 112 through the seventh flow channel hole 321 and to the third cavity 222 through the eighth flow channel hole 322.

[0032] Multiple fifth flow channel holes 311 and seventh flow channel holes 321 are evenly distributed radially along the fixed shaft 300. In this embodiment, four fifth flow channel holes 311 and four seventh flow channel holes 321 are provided, and the included angle between adjacent flow channel holes is 90°, so that the liquid distribution is uniform and the pressure concentration is reduced. The sixth flow channel hole 312 and the eighth flow channel hole 322 are located at both ends of the fixed shaft 300.

[0033] Specifically, the fixed shaft 300 is a hollow shaft with a plug 302 at one end. The plug 302 has threads on its outer circumference. The other end of the hollow shaft is connected to its interior. The two hollow shafts are connected together by a threaded sleeve 301 to form the fixed shaft 300. The partition 115 in the first cavity is perpendicularly fixed to the threaded sleeve 301.

[0034] The above settings can achieve the following: The first connector 100, the fixed shaft 300, and the second connector 200 cooperate to form two sets of flow channels, which can realize that the liquid flow direction in the two sets of flow channels is the same or opposite.

[0035] A set of flow channels consists of the first sub-cavity 111 of the first sleeve 110, the fourth cavity 310 of the fixed shaft 300, and the second cavity 212 of the second sleeve 210, which are connected in sequence. Another set of flow channels consists of the second sub-cavity 112 of the first sleeve 110, the fifth cavity 320 of the fixed shaft 300, and the third cavity 222 of the third sleeve 220, which are connected in sequence.

[0036] Example 2

[0037] Example 2 is a further improvement on Example 1.

[0038] Reference Figure 2 This embodiment discloses a rotary joint, which is provided with a sealing rotation mechanism. The sealing rotation mechanism is respectively disposed between the second sleeve 210 and the fixed shaft 300, and between the third sleeve 220 and the fixed shaft 300.

[0039] Reference Figure 4 Since the sealing rotation mechanism provided in the second sleeve 210 and the third sleeve 220 has the same structure, the sealing rotation mechanism provided between the second sleeve 210 and the fixed shaft 300 will be used as an example for explanation.

[0040] The sealing rotation mechanism includes a bearing housing 410, which is disposed between the second sleeve 210 and the fixed shaft 300. The bearing housing 410 adopts a stepped diameter reduction coaxial cylindrical structure, which has a first step 411, a second step 412 and a third step 413 with the radial distance from the fixed shaft 300 decreasing sequentially.

[0041] The first step 411 is located near the edge of the second sleeve 210. The first step 411 is a flange with an outer diameter slightly smaller than the inner diameter of the second sleeve 210. The flange is fixedly connected to the second sleeve 210 by welding. A bearing seal seat 420 is fitted onto the fixed shaft 300 at the corresponding position. The inner wall of the flange is threaded to the bearing seal seat 420. A first carbon fiber packing 422 is provided between the bearing seal seat 420 and the fixed shaft 300. The first carbon fiber packing 422 is fixed to the bearing seal seat 420 by a bearing sealing cap 421.

[0042] The outer surface of the second step 412 is spaced apart from the inner wall of the second sleeve 210. The fixed shaft 300 is provided with a tapered roller bearing 430 at the corresponding position, and the tapered roller bearing 430 is in contact with the inner surface of the second step 412.

[0043] The third step 413 corresponds to the end position of the fixed shaft 300. The outer diameter of the third step 413 is slightly smaller than the inner diameter of the second sleeve 210. (Refer to...) Figure 5 The third step 413 is provided with support bosses 414 evenly spaced around its circumference. The gap between adjacent support bosses 414 forms a flow channel for liquid flow. The support bosses 414 are fixedly connected to the second sleeve 210. The fixed connection is specifically welding. The inner wall of the third step 413 is provided with a spring compression nut 460 that is threadedly connected to it.

[0044] A positioning nut 440 is provided on the fixed shaft 300 on one side of the tapered roller bearing 430. Between the inner wall of the third step 413 and the fixed shaft 300, along the direction from the positioning nut 440 to the spring compression nut 460, an inner washer 450, a second carbon fiber packing 451, an outer washer 452 and a butterfly compression spring 454 are provided on the fixed shaft 300 in sequence. Among them, the outer washer 452 is fitted with an outer O-ring seal 453.

[0045] The above settings can achieve this. The disc-shaped compression spring 454 transmits axial pressure to the outer washer 452, which has an outer O-ring seal 453 installed. This significantly increases the density of the second carbon fiber packing 451 under the reaction force of the inner washer 450, preventing liquid leakage towards the tapered roller bearing 430. The flange and bearing sealing seat 420 cooperate to seal the edge of the second sleeve 210 and the fixed shaft 300. The tapered roller bearing 430 enables relative rotation between the bearing seat 410 and the fixed shaft 300. The bearing seat 410 is fixedly connected to the second sleeve 210, meaning that the second sleeve 210 and the fixed shaft 300 can rotate relative to each other.

[0046] Example 3

[0047] Reference Figure 6This utility model discloses a feeding device, which includes a feed cylinder 500 and a chute 600. The feed cylinder 500 and the chute 600 are rotatably connected by the aforementioned rotary joint, and the feed cylinder 500 and the chute 600 are connected by the rotary joint to form a flow channel for the flow of coolant. During the feeding process of the electric arc furnace using the feeding device, the feed cylinder 500 and the chute 600 are cooled down by the coolant.

[0048] Reference Figure 7 The rotary joint has a first connecting part 100 connected to a feed cylinder 500 and a second connecting part 200 connected to a chute 600. The feed cylinder 500 and the chute 600 are rotatably connected through the rotary joint. The feed cylinder 500 and the chute 600 are rotatably engaged for feeding the electric arc furnace. The raw material is fed downward along the feed cylinder 500 into the chute 600. An external drive mechanism drives the chute 600 to reciprocate around a fixed shaft 300 at a certain angle. The material is thrown into the furnace through the chute 600. The feed cylinder 500 and the chute 600 form a flow channel for the flow of coolant through the rotary joint to cool the chute 600 and the feed cylinder 500.

[0049] Reference Figure 9 The feed cylinder 500 adopts a double-layer structure. A first partition plate 501 is provided between the inner wall and the outer wall of the feed cylinder 500. The first partition plate 501 divides the cavity between the inner wall and the outer wall of the feed cylinder 500 into a liquid inlet channel 502 and a liquid outlet channel 503. The first sleeve 110 and the bearing support 120 are respectively fixedly connected to the feed cylinder 500. The first flow channel hole 113 of the first sleeve 110 is connected to the liquid inlet channel 502, and the second flow channel hole 114 is connected to the liquid outlet channel 503. The feed cylinder 500 is provided with a liquid inlet connector and a liquid outlet connector (not shown in the figure). The liquid inlet connector is connected to the liquid inlet channel 502 and to the coolant supply pipeline. The liquid outlet connector is connected to the liquid outlet channel 503 and to the coolant return pipeline.

[0050] Reference Figure 8 The chute 600 adopts a double-layer structure. A second partition plate 601 is provided between the inner wall and the outer wall of the chute 600. The second partition plate 601 divides the cavity between the inner wall and the outer wall of the chute 600 into a first cooling channel 602 located on the left and a second cooling channel 603 located on the right. The first cooling channel 602 and the second cooling channel 603 are connected at one end (see reference). Figure 7The connection is located near the lower end of the chute 600. Connecting cavities 230 are respectively provided on the upper parts of both sides of the chute 600. The first cooling channel 602 communicates with one connecting cavity 230, and the second cooling channel 603 communicates with the other connecting cavity 230. One connecting cavity 230 is fitted onto the second sleeve 210, and the third channel hole 211 of the second sleeve 210 communicates with the corresponding connecting cavity 230. The other connecting cavity 230 is fitted onto the third sleeve 220, and the fourth channel hole 221 of the third sleeve 220 communicates with the corresponding connecting cavity 230.

[0051] The above settings can achieve the following: The coolant enters the inlet channel 502 of the feed cylinder 500 through the inlet connector along the supply pipeline, flows sequentially through the first sub-cavity 111, the fourth cavity 310 and the second cavity 212, and enters the chute 600 through the connecting cavity 230 on one side. In the chute 600, it flows sequentially through the first cooling channel 602 and the second cooling channel 603, and then enters the connecting cavity 230 on the other side. Next, the coolant flows sequentially through the third cavity 222, the fifth cavity 320 and the second sub-cavity 112, and then enters the outlet channel 503 of the feed cylinder 500. Finally, it flows into the coolant return pipeline through the outlet connector, thereby achieving cooling and temperature reduction of the feed cylinder 500 and the chute 600 through the coolant.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary joint, characterized in that, The device includes a first connector (100), a fixed shaft (300), and a second connector (200). The first connector (100) includes a first sleeve (110) sleeved on the fixed shaft (300) and a bearing support (120). The bearing support (120) is disposed on both sides of the first sleeve (110) and fixedly connected to the fixed shaft (300). An annular first cavity is formed between the first sleeve (110) and the fixed shaft (300). A partition (115) is provided inside the first sleeve (110) and perpendicularly connected to the fixed shaft (300). The partition (115) divides the first cavity into a first sub-cavity (111) and a second sub-cavity (112). The first sub-cavity (111) is provided with a first flow channel hole (113), and the second sub-cavity (112) is provided with a second flow channel hole (114). The second connecting member (200) includes a second sleeve (210) and a third sleeve (220) sleeved at both ends of the fixed shaft (300). The second sleeve (210) and the third sleeve (220) are respectively sealed and rotatably connected to the fixed shaft (300). A second cavity (212) is formed between the second sleeve (210) and the fixed shaft (300). The second cavity (212) is provided with a third flow channel hole (211). A third cavity (222) is formed between the third sleeve (220) and the fixed shaft (300). The third cavity (222) is provided with a fourth flow channel hole (221). The fixed shaft (300) is a hollow shaft. The middle position of the fixed shaft (300) is blocked, so that a fourth cavity (310) and a fifth cavity (320) are formed on both sides respectively. The fourth cavity (310) is provided with a fifth flow channel hole (311) communicating with the first sub-cavity (111) and a sixth flow channel hole (312) communicating with the second cavity (212). The fifth cavity (320) is provided with a seventh flow channel hole (321) communicating with the second sub-cavity (112) and an eighth flow channel hole (322) communicating with the third cavity (222).

2. The rotary joint as described in claim 1, characterized in that, The fifth flow channel hole (311) and the seventh flow channel hole (321) are evenly distributed around the fixed shaft (300), and the sixth flow channel hole (312) and the eighth flow channel hole (322) are located at both ends of the fixed shaft (300).

3. The rotary joint as described in claim 2, characterized in that, Rotary sealing mechanisms are provided between the second sleeve (210) and the fixed shaft (300), and between the third sleeve (220) and the fixed shaft (300). Each rotary sealing mechanism includes a bearing seat (410) disposed between the second sleeve (210) and the fixed shaft (300). The bearing seat (410) adopts a stepped-diameter-reduced coaxial cylindrical structure, and has a first step (411), a second step (412), and a third step (413) with successively reduced diameters. The first step (411)... The outer surface is fixed to the inner wall of the second sleeve (210), and its inner surface is sealed and rotated with the fixed shaft (300). A tapered roller bearing (430) is provided between the second step (412) and the fixed shaft (300). The third step (413) is sealed and rotated with the fixed shaft (300), and the third step (413) is circumferentially and evenly spaced with support bosses (414). The support bosses (414) are fixed to the second sleeve (210), and a flow channel for liquid flow is formed between adjacent support bosses (414).

4. The rotary joint as described in claim 3, characterized in that, A bearing seal seat (420) and a bearing seal cover (421) are provided between the first step (411) and the fixed shaft (300), and a first carbon fiber packing (422) is provided between the bearing seal seat (420) and the bearing seal cover (421).

5. The rotary joint as described in claim 3, characterized in that, A positioning nut (440) is provided on one side of the tapered roller bearing (430) on the fixed shaft (300). A spring compression nut (460) is provided between the end of the fixed shaft (300) and the bearing seat (410). Along the direction from the positioning nut (440) to the spring compression nut (460), an inner washer (450), a second carbon fiber packing (451), an outer washer (452) and a butterfly compression spring (454) are provided in sequence between the fixed shaft (300) and the third step (413).

6. A feeding device, characterized in that, It includes a feed cylinder (500), a chute (600) and a rotary joint according to any one of claims 1-5, the rotary joint being disposed between the feed cylinder (500) and the chute (600), the first connecting member (100) being connected to the feed cylinder (500) and the second connecting member (200) being connected to the chute (600).

7. The feeding device as described in claim 6, characterized in that, The feed cylinder (500) is vertically connected. The cylinder wall of the feed cylinder (500) adopts a double-layer structure. A first partition plate (501) is provided inside the cylinder wall. The first partition plate (501) divides the cavity between the inner wall and the outer wall of the feed cylinder (500) into a liquid inlet channel (502) and a liquid outlet channel (503). The first sub-cavity (111) is connected to the liquid inlet channel (502) through a first flow channel hole (113). The second sub-cavity (112) is connected to the liquid outlet channel (503) through a second flow channel hole (114).

8. The feeding device as described in claim 7, characterized in that, The chute (600) adopts a double-layer structure. The chute (600) is provided with a second partition plate (601). The second partition plate (601) divides the chute (600) into a left first cooling channel (602) and a right second cooling channel (603). One end of the first cooling channel (602) and the second cooling channel (603) are connected. The upper part of both sides of the chute (600) is provided with connecting cavities (610). One end of the first cooling channel (602) is connected to one side connecting cavity (610), and one end of the second cooling channel (603) is connected to the other side connecting cavity (610). The two connecting cavities (610) are respectively sleeved on the second sleeve (210) and the third sleeve (220). The second sleeve (210) is connected to the corresponding connecting cavity (610) through the third channel hole (211), and the third sleeve (220) is connected to the corresponding connecting cavity (610) through the fourth channel hole (221).

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