Long water baffle plate of disc structure of disc dryer and disc structure including the water baffle plate

Abstract

The present invention provides a long water baffle for a disc structure of a disc dryer and a disc structure including the water baffle, wherein the long water baffle comprises: a main body, the main body comprising a first side surface connected to the disc structure and a second side surface opposite to the first side surface; and a bending portion, the bending portion being arranged on the second side surface, and the bending portion extending from the second side surface in an inclined manner relative to the main body. The structure according to the present application can effectively prevent water from flowing away from unwelded gaps in the disc structure.

Description

Technical Field

[0001] The present application relates to the field of disc dryers that use steam as a heat source, and more specifically, to a long water baffle of a disc structure of a disc dryer and a disc structure including the water baffle. Background Art

[0002] Disc dryer is used in the drying of sludge, food, medicine, chemical raw materials and other materials. Its drying heat source is generally thermal oil or saturated steam. Its structure is as follows: Figure 1 As shown, the disc dryer includes a steam manifold 1, a drive system 2, a junction box and a threading pipe 3, a drainage manifold 4, an equipment base 5, an equipment body 6, equipment insulation 7 and a carrier gas heat exchanger.

[0003] The working principle of the disc dryer is as follows:

[0004] The wet sludge enters the equipment body 6 from the feed port ①, and the driving system 2 transmits power to the hollow rotor ③ through the reduction motor and chain drive. The hollow rotor ③ rotates and gradually pushes the sludge to the tail of the equipment body 6, and the dry sludge is discharged from the discharge port ⑤.

[0005] Steam enters the hollow rotor ③ from the steam manifold 1 through the rotary joints at both ends of the hollow rotor ③, and heats the material through the large heat exchange area of ​​the disc shaft and the attached disc, so that the moisture of the wet material evaporates quickly. The condensed water after steam heat exchange is discharged from the equipment body 6 through the rotary joint.

[0006] The carrier gas is heated by the carrier gas heat exchanger 8 and enters the equipment body 6 through the carrier gas inlet ④. The carrier gas brings the water vapor evaporated from the wet sludge out of the equipment body 6 through the gas outlet ②.

[0007] The core component to ensure the normal operation of the disc dryer is the hollow rotor with discs inside the shell, such as Figure 2 As shown, the Figure 2 A hollow shaft structure is shown. As shown in the figure, the hollow shaft structure includes a rotary joint 21 , a siphon tube 22 , a hollow shaft 23 and multiple sets of disc structures 24 .

[0008] like Figure 3A and 3B As shown, the disc structure of the disc dryer is two disc steel plates of the same shape and slightly different sizes, that is, a large disc 31 and a small disc 32 are butt-welded together. The large disc 31 and the small disc 32 are annular with a hole in the middle. After being stamped, they become disc-shaped, and are buckled to form a cavity in the middle. Then, they are sleeved on the hollow shaft 23, and the hollow shaft 23 has a hole. Steam can enter the cavity of the large and small discs through the hole on the hollow shaft 23.

[0009] Only one side of the long water retaining plate 33 can be welded to one of the large and small discs, and the other side cannot be welded. Since the small water retaining plate 34 is shorter, both sides thereof can be welded to the large and small discs.

[0010] A cavity is formed between the large disc 31 and the small disc 32. During operation, steam will enter the disc structure 24 from the hollow shaft 23 through the drainage branch pipe 35. The interior of the disc structure 24 will be filled with steam. After heat exchange, the steam condenses into liquid. The disc structure 24 rotates continuously. The water in the disc structure 24 is collected into a water collecting trough formed by the long water baffle plate 33 and the short water baffle plate 34 through the water baffle plates 33 and 34 welded inside the disc cavity. Then, the water flows into the hollow shaft 23 through the drainage branch pipe 35 due to the action of gravity. At the end of the hollow shaft 23, the water in the hollow shaft 23 is sucked away by the siphon action of the siphon tube 22.

[0011] Refer to Figure 2 The steam enters the hollow shaft 23 and then enters the inside of the disc. The heat released in the process of condensing into condensed water is transferred to the sludge outside the disc. If the condensed water and non-condensable gas in the disc and the central shaft 23 cannot be discharged in time, it will inevitably affect the heat transfer of the disc, thereby affecting the drying effect and processing capacity of the equipment.

[0012] The conventional disc dryers on the market now usually use a water baffle plate inside the disc to drain water. When the disc rotates, the water baffle plate guides the condensed water in the disc into the hollow shaft, and then a siphon is set to discharge the condensed water from the hollow shaft.

[0013] However, the following are some of the problems that may occur when using siphon drainage and conventional drainage structures in discs:

[0014] The steam in the disc is condensed into liquid after heat exchange, and the process of liquid condensed water being discharged from the disc is as follows: Figure 4 As shown, during the rotation of the disc, the long water baffle brings the condensed water from the low point to the high point, and then flows into the central axis 23 through the drainage branch pipe 35. Since the cavity formed between the large disc 31 and the small disc 32 is narrow relative to the diameter of the disc, it is a narrow and long space. Due to space limitations, the long water baffle 33 in the cavity can only be completely welded with one of the large and small discs before the two discs are buckled together. After buckling together, since the welding gun cannot enter, welding is usually not performed. During the rotation and drainage of the disc, it is easy to cause water to leak from the gap where the long water baffle 33 is not welded to the disc, resulting in water storage in the disc, affecting the heat transfer effect, causing problems such as low equipment processing capacity and high energy consumption.

[0015] Moreover, when the equipment starts to operate, when steam is passed from the outside to the disc, the steam will enter the disc with pressure from the four drainage branches 35 of the hollow shaft at the same time, causing the air entering from the hollow shaft to accumulate inside the disc. This part of the air has a great heat insulation, which affects the heat transfer of the equipment. The non-condensable gas inside the disc can only be gradually replaced by diffusion. This will cause the problem of poor heat exchange effect of the equipment for a long time in the initial operation, resulting in low equipment processing capacity and high energy consumption. Summary of the invention

[0016] In order to solve the above problems, the present invention provides a long water baffle plate of a disc dryer disc structure and a disc structure including the water baffle plate, which can prevent water in the disc structure from seeping out from unwelded welds, thereby preventing the problem of water accumulation in the disc structure and resulting in a decrease in heat exchange effect.

[0017] In order to achieve the above-mentioned purpose, a long water baffle for a disc structure of a disc dryer is provided, the long water baffle comprising: a main body, the main body comprising a first side surface connected to the disc structure and a second side surface opposite to the first side surface; and a bending portion, the bending portion is arranged on the second side surface, and the bending portion extends from the second side surface in a manner inclined relative to the main body.

[0018] Furthermore, the inclination angle of the bending portion relative to the main body is greater than or equal to 90 degrees.

[0019] Furthermore, the bending portion is inclined at an angle between 90 degrees and 100 degrees relative to the main body.

[0020] Further, the bending portion is arranged on the second side surface substantially along the entire length of the main body.

[0021] According to another aspect of the present application, a disk structure including the long water baffle plate is provided.

[0022] Furthermore, the disc structure also includes a large disc and a small disc, the first side surface of the long water baffle is arranged on one of the large disc and the small disc, and the bent portion of the long water baffle is attached to the other of the large disc and the small disc.

[0023] Further, the plane where the long water baffle is located is deflected relative to a plane passing through a connection between the long water baffle and the disc where the long water baffle is located and perpendicular to the disc where the long water baffle is located.

[0024] Furthermore, the plane where the long water baffle is located is deflected by 5 to 10 degrees relative to a plane passing through a connection between the long water baffle and the disc where the long water baffle is located and perpendicular to the disc where the long water baffle is located.

[0025] Furthermore, the disc structure is provided with two long water baffles, and the two long water baffles are arranged opposite to each other with the first opening arranged in the middle of the large disc or the second opening arranged in the middle of the small disc being separated therefrom.

[0026] Furthermore, the disc structure is provided with a plurality of the long water baffles, and the plurality of the long water baffles are arranged at intervals along the circumference of the disc where they are located.

[0027] The structure according to the present application can effectively prevent water from flowing out from the unwelded gaps in the disc structure, thereby preventing the problem of water accumulation in the disc structure and resulting in a decrease in heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 The structural schematic diagram of the disc dryer of the prior art is shown;

[0030] Figure 2 A schematic diagram of the hollow shaft structure of a disc dryer in the prior art is shown;

[0031] Figure 3A and Figure 3B The following is a schematic diagram of a conventional disc drainage structure of a disc dryer in the prior art, wherein: Figure 3A A side view of the large disc and the small disc after being combined with each other is shown; Figure 3B Shown along Figure 3A A cross-sectional view taken along line AA in FIG.

[0032] Figure 4 A schematic diagram showing the process of disc drainage of a disc dryer is shown;

[0033] Figure 5A and Figure 5B The disc structure schematic diagram of the disc dryer according to the first embodiment of the present application is shown, wherein: Figure 5A A side view of the large disc and the small disc after being combined with each other is shown; Figure 5B A view of the long water baffle after being twisted and a partial enlarged view of the twisted long water baffle are shown;

[0034] Figure 6 Shown along Figure 5B A schematic cross-sectional view and an enlarged schematic view of the long water retaining plate in the disc structure of the disc dryer after being cut along the line AA shown;

[0035] Figure 7A three-dimensional schematic diagram of a long water retaining plate according to an embodiment of the present application is shown;

[0036] Fig. 8A and Figure 8B They are shown respectively Figure 5B The schematic diagram and enlarged diagram of the torsion offset of the long water retaining plate relative to its own axis shown;

[0037] Fig. 9 The schematic structure of a long water retaining plate according to the second embodiment of the present application is shown;

[0038] Fig. 10A Shows Fig. 9 The front view of the long water retaining plate structure shown, Fig. 10B Shown along Fig. 10A A cross-sectional view of the long water retaining plate taken along line AA in FIG.

[0039] Fig.11 Shows the Fig. 9 A view showing a long water baffle disposed on a disc structure;

[0040] Fig.12 Shown along Fig.11 The cross-sectional view of the disk structure taken along line BB and its enlarged view

[0041] Fig.13 A schematic diagram of a discharge structure for a disc dryer according to a third embodiment of the present application is shown;

[0042] Fig.14 Shows Fig.13 An internal cross-sectional view of the discharge structure of the disc dryer shown;

[0043] Fig.15 Shows Fig.13 The schematic diagram of the portion of the disc dryer that is prone to water accumulation is shown;

[0044] Fig.16 A perspective view showing a discharge structure for a disc dryer according to a fourth embodiment of the present application;

[0045] Fig.17A Shows Fig.16 A cross-sectional view of the discharge structure shown, Fig. 17B Shows Fig.16 A diagram showing the relationship between the various components in the discharge structure shown;

[0046] Fig.18 Schematically shows Fig.16 A diagram of the drainage process of the drainage structure shown;

[0047] Fig.19AA schematic cross-sectional view of a discharge structure for a disc dryer according to a fifth embodiment of the present application is shown. Fig.19B Shows Fig.19A A diagram showing the relationship between the various components in the discharge structure;

[0048] Fig. 20 Schematically shows Fig.19A A diagram of the drainage process of the drainage structure shown;

[0049] Fig.21 A perspective view schematically shows a discharge structure for a disc dryer according to a sixth embodiment of the present application;

[0050] Fig. 22 and Fig.23 Schematically shown respectively Fig.21 Side and front views of the discharge structure shown;

[0051] Fig.24 Schematically shows Fig.21 Diagram showing the relationship between the various components in the discharge structure. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0053] According to the present application, a disc structure of a disc dryer is provided, and the disc structure includes: a large disc, a first opening is arranged in the middle of the large disc; a small disc, a second opening is arranged in the middle of the small disc; a long water baffle, the long water baffle is arranged on the small disc, and the long water baffle extends from the outermost end of the small disc to the second opening of the small disc, wherein the plane where the long water baffle is located is deflected relative to a plane passing through the connection between the long water baffle and the small disc and perpendicular to the small disc; and a short water baffle, the short water baffle is shorter than the long water baffle, and the short water baffle is arranged on at least one of the large disc and the small disc, and when the large disc and the small disc are combined, the short water baffle and the long water baffle form a water retaining groove.

[0054] Figure 5A and Figure 5B A schematic diagram of the disc structure of a disc dryer according to the first embodiment of the present application is shown.

[0055] like Figure 5A and Figure 5B As shown, the disc structure of the disc dryer includes a large disc 10 and a small disc 20, wherein a first opening (not shown) is provided in the middle of the large disc 10, and a second opening 50 is provided in the middle of the small disc 20. When the large disc 10 and the small disc 20 are combined together, a narrow cavity is formed between the two.

[0056] Furthermore, the disc structure further includes a long water baffle 30 disposed on the large disc 10 or the small disc 20 and a short water baffle 40 disposed on at least one of the large disc 10 and the small disc 20 .

[0057] According to a preferred embodiment of the present application, Figure 7 As shown, the main body 31 of the long splash plate 30 has a generally triangular shape.

[0058] According to a preferred embodiment of the present application, the long water baffle 30 is arranged on the small disc 20, for example, a side 32 of the main body 31 of the long water baffle 30 is fixed to the small disc 20 by welding. Of course, the long water baffle 30 can also be arranged on the large disc 10.

[0059] And, if Figure 5B As shown, the long water baffle 30 extends from the outermost end of the small disc 20 to the second opening 50 of the small disc 20 .

[0060] Figure 5B The partial enlarged view in FIG. 1 shows that the plane where the main body of the long water baffle 30 is located is deflected relative to the plane passing through the connection between the long water baffle and the small disc and perpendicular to the small disc. Specifically, in the present application, a side surface 32 of the main body 31 of the long water baffle 30 is arranged on the small disc 20, and the long water baffle 30 is deflected by a certain angle relative to the plane where it is located when it is vertically arranged on the small disc 20 (hereinafter referred to as the vertical plane).

[0061] Preferably, the long water retaining plate 30 is deflected by 5 to 10 degrees relative to the vertical plane. In other words, the long water retaining plate 30 is torsionally biased relative to its own central axis. Fig. 8A and 8B As shown in the figure, reference numeral 30' shows a long water baffle plate vertically arranged on the small disc 20, and reference numeral 30 shows a long water baffle plate deflected by 5 to 10 degrees relative to the long water baffle plate 30', that is, the long water baffle plate 30 is deflected by 5 to 10 degrees relative to its own axis.

[0062] like Figure 5B As shown, the disc structure further includes a short water baffle 40, which is shorter than the long water baffle 30, and the short water baffle 40 is at least arranged on one of the large disc 10 and the small disc 20. According to an embodiment of the present application, the two sides of the short water baffle 40 are welded and fixed on the large disc 10 and the small disc 20. Moreover, when the large disc 10 and the small disc 20 are combined, the short water baffle 40 and the long water baffle 30 form a water retaining groove.

[0063] Furthermore, the short water baffle plate 40 is disposed downstream of the long water baffle plate 30 along the rotation direction of the small disk 20 where the long water baffle plate 30 is located.

[0064] like Figure 5B As shown, the disc structure is provided with two long water baffles 30, and the two long water baffles are arranged opposite to each other with the second opening 50 of the small disc interposed therebetween.

[0065] According to a preferred embodiment of the present application, the disc structure may also be provided with a plurality of long water baffles 30, which are spaced apart along the circumference of the small disc 200 where they are located. For example, the plurality of water baffles 30 are spaced apart from each other at uniform angles, such as 120 degrees.

[0066] like Figure 6 As shown, it shows the state where the long water baffle 30 is welded and fixed on the small disc 20 and the large disc 10 is combined with the small disc 20, and the long water baffle 30 is welded on the small disc 20 but not welded to the large disc 10, wherein the dotted line is the state when the long water baffle 30 is perpendicular to the small disc 20, and the solid line represents the state after the long water baffle 30 is deflected relative to its own axis.

[0067] According to an embodiment of the present application, two side surfaces of the main body of the short water retaining plate 40 are respectively welded to the large disc 10 and the small disc 20 .

[0068] According to another aspect of the present application, a disc dryer including the above disc structure is provided.

[0069] According to the present application, as described above, the long water baffle plate 30 is completely welded to the small disc 20 in a deflected manner, but not welded to the large disc 10. When the small disc 20 rotates clockwise, water close to the large disc 10 will flow to the edge where the long water baffle plate 30 is connected to the small disc 20 due to the torsional bias of the long water baffle plate 30. The connecting edge is a completely welded structure, so the water will flow along the weld connected to the small disc 20 into the central axis, which can effectively prevent water from flowing away from the unwelded gap.

[0070] According to another aspect of the present application, a long water baffle for a disc structure of a disc dryer is provided, the long water baffle comprising: a main body, the main body comprising a first side connected to the disc structure and a second side opposite to the first side; and a bending portion, the bending portion is arranged on the second side and extends from the second side in an inclined manner relative to the main body.

[0071] like Fig. 9 and Fig. 10A as well as Fig. 10B As shown, the long water retaining plate 300 according to the present application includes a main body 301 and a bent portion 303 extending from the main body 301 along the length direction of the main body 301 and in an inclined manner relative to the main body 301. In addition, the first side surface 305 of the main body 301 of the long water retaining plate 300 is arranged on the disc structure, for example, fixed to the disc structure by welding. The bent portion 303 extends from a second side surface opposite to the first side surface.

[0072] Preferably, the inclination angle of the bending portion 303 relative to the main body 301 is greater than or equal to 90 degrees. More preferably, the inclination angle of the bending portion 303 relative to the main body 301 is between 90 degrees and 100 degrees.

[0073] According to an embodiment of the present application, the bent portion 303 is disposed on the second side surface of the long water retaining plate 300 substantially along the entire length of the main body.

[0074] like Fig.11 As shown, the first side of the long water retaining plate 300 with the bent portion 303 is arranged (fixed by welding, etc.) on the small disc 200, and the short water retaining plate 400 is arranged (fixed by welding, etc.) on the large disc 100 and the small disc 200.

[0075] As described above, the disc structure in this embodiment is the same as that described above based on the first embodiment. That is, the disc structure includes a large disc 100 and a small disc 200, wherein a first opening is provided in the middle of the large disc 100, and a second opening is provided in the middle of the small disc 200. When the large disc 100 and the small disc 200 are combined together, a narrow cavity is formed between the two.

[0076] When the large disc 100 with the long water retaining plate 300 and the short water retaining plate 400 and the small disc 200 are combined together, as shown in FIG. Fig.12 As shown, since the bent portion 303 is inclined relative to the main body 301 , the bent portion 303 of the long water retaining plate 300 and the large disc 100 can fit tightly together based on the elastic deformation between the bent portion 303 and the main body 301 .

[0077] Therefore, during the rotation of the disc structure, when the water in the disc is brought from a low position to a high position by the long water baffle plate, the water will not stay at the bend due to the existence of the bend, and the water will enter the cavity formed by the main body 301 of the long water baffle plate 300, the bend 305 and the small disc 200, and enter the hollow shaft through the cavity formed between the long water baffle plate 300 and the small disc 200.

[0078] Furthermore, since the inclination angle of the bending portion 303 relative to the main body 301 is greater than or equal to 90 degrees, the bending portion 303 is deformed to a certain extent by pressing the two discs against each other. Through the deformation elastic force, the bending portion 303 is tightly fitted together with the large disc 100, thereby achieving self-fitting.

[0079] According to the present application, as described above, the long water baffle plate 300 is completely welded to the small disc 200, but not welded to the large disc 100. When the small disc 200 rotates clockwise, the water near the large disc 100 will enter the cavity formed by the main body 301, the bent portion 305 and the small disc 200 due to the bent portion of the long water baffle plate 300, and will not flow out from the unwelded weld, thereby effectively preventing water from flowing away from the unwelded gap.

[0080] According to another preferred embodiment of the present application, a long water baffle 300 with a bent portion 303 is arranged on a large plate or a small plate in a manner of being deflected relative to a plane passing through a connection between the long water baffle and the plate where the long water baffle is located and perpendicular to the plate where the long water baffle is located.

[0081] Specifically, as mentioned above based on Figures 5B to 8B In the described manner, the long water baffle plate 300 with the bent portion 303 is arranged on a large disk or a small disk in a manner that it is offset relative to its own center axis.

[0082] Preferably, the plane where the main body 301 of the long water baffle 300 with the bent portion 303 is located is deflected by 5 to 10 degrees relative to a plane passing through the connection between the long water baffle and the disc where the long water baffle is located and perpendicular to the disc where the long water baffle is located. Therefore, when the disc with the long water baffle 300 is pressed against another disc, the bent portion 303 is deformed to a certain extent, and the bent portion 303 is tightly fitted with the other disc through the deformation elastic force, thereby achieving self-fitting.

[0083] As mentioned above, this structure can also effectively prevent water from flowing out of the unwelded gap.

[0084] According to the present application, two long water baffles with bent portions may be provided on the disc structure, and the two long water baffles are arranged opposite to each other with the openings of the disc on which they are located separated.

[0085] Of course, a plurality of long water baffles with bent portions may also be arranged on the disc structure, and the plurality of long water baffles may be arranged at intervals along the circumference of the disc on which they are located.

[0086] According to the above description, the disc dryer disc structure including the long water baffle with the bent portion can effectively prevent water from flowing away from the unwelded gap.

[0087] According to another aspect of the present application, a discharge structure for a disc dryer is provided, which includes a hollow shaft, which passes through the disc structure of the disc dryer, and is provided with a plurality of openings on the hollow shaft, and the openings are connected to the cavity fluid of the disc structure; a central tube, which passes through the hollow shaft along the axial direction of the hollow shaft and is arranged inside the hollow shaft, and one end of the central tube is closed; a branch tube, one end of the branch tube is connected to the cavity fluid of the disc structure, the other end of the branch tube is connected to the fluid of the central tube, and the depth of the branch tube inserted into the central tube is at least greater than the radius of the central tube; and a water outlet pipe, a first end of the water outlet pipe enters the other end of the central tube and is connected to the fluid of the other end of the central tube, and a second end of the water outlet pipe is connected to the outside.

[0088] The following will refer to the attached Figures 13 to 24 The discharge structure according to the present application is described in detail.

[0089] like Fig.13 and Fig.14 , which shows a discharge structure according to the third embodiment of the present application. As shown in the figure, the discharge structure includes a branch pipe 2000, a hollow shaft 3000, a water outlet pipe 4000 and a central pipe 5000. The hollow shaft 3000 passes through the disc structure 1000 of the disc dryer, and the central pipe 3000 passes through the hollow shaft along the axial direction of the hollow shaft 5000 and is arranged inside the hollow shaft. One end of the central pipe is closed, and the other end is inserted into the water outlet pipe 4000. A branch pipe 2000 is inserted between the hollow shaft 3000 and the central pipe 5000, one end of the branch pipe 2000 is in fluid communication with the cavity of the disc structure 1000, and the other end is in fluid communication with the central pipe 5000, and the depth of the branch pipe 2000 inserted into the central pipe 5000 exceeds the center line of the central pipe 5000, that is, the depth of the branch pipe 2000 inserted into the central pipe 5000 is at least greater than the radius of the central pipe 5000. One end of the water outlet pipe 4000 is inserted into the central pipe 5000 , and the other end is connected to the outside. In addition, the diameter of the water outlet pipe 4000 is smaller than that of the central pipe 5000 .

[0090] According to a preferred embodiment of the present application, the central tube 5000 is welded and fixed on the hollow shaft 3000 , the outlet pipe 4000 is welded and fixed on the hollow shaft 3000 , and the branch pipe 2000 is welded and fixed between the hollow shaft 3000 and the central tube 5000 .

[0091] And, if Fig.14 As mentioned above, a plurality of openings 6000 are provided on the hollow shaft 3000 , and these openings can be in fluid communication with the cavity of the disc structure 1000 .

[0092] According to an embodiment of the present application, the branch pipe 2000 corresponds one-to-one to the water retaining groove formed by the long water retaining plate and the short water retaining plate in the disc structure 1000, and is in fluid communication with the corresponding water retaining groove.

[0093] The relative rotation of steam to the disc structure 1000, the hollow shaft 3000, the central tube 5000, the water outlet pipe 4000 and other components is counterclockwise, and at this time the disc structure 1000, the hollow shaft 3000, the central tube 5000, the water outlet pipe 4000 and the branch pipe 2000 rotate clockwise around the center. When steam is introduced, the steam first enters the hollow shaft 3000, and enters the disc structure 1000 through the opening 6000 on the hollow shaft 3000, causing the air and other non-condensable steam in the disc structure 1000 to rotate counterclockwise inside the disc structure 1000, and enter the central tube 5000 through the branch pipe 2000. The long water baffle in the disc structure 1000 separates the cavity in the disc structure 1000, so that the steam entering the disc structure 1000 can only rotate counterclockwise for one circle before entering the branch pipe 2000. In this way, the air and other non-condensable steam in the disc structure 1000 are blown out.

[0094] During normal operation, since there is a certain amount of accumulated water in the central tube 5000 and since the depth of the branch tube 2000 inserted into the central tube 5000 exceeds the center line of the central tube 5000, when the branch tube 2000 rotates to the bottom of the hollow shaft 3000, the accumulated water in the central tube 5000 will not flow back into the disc structure 1000, thereby ensuring the heat exchange effect of the disc structure.

[0095] When using the discharge structure as described above, since the diameter of the central pipe 5000 is relatively large and the diameter of the outlet pipe 4000 is relatively small, water accumulation is likely to occur inside the central pipe during the process of draining water outward by gravity (e.g. Fig.15 As shown in the figure, water accumulation will cause heat loss of the steam in the disc structure. When the equipment is shut down, water accumulation will also cause corrosion of the center tube.

[0096] This application further provides Figures 16 to 24 The discharge structure shown can further discharge the accumulated water in the disc structure, which not only ensures the heat of the steam in the disc structure but also can better protect the central tube.

[0097] like Figures 16 to 18 As shown, it shows Fig.13 and Fig.14 An example of a center tube with a discharge vane is shown.

[0098] like Fig.16 as well as Fig.17A As shown, the drainage structure further includes a drainage blade 7000 disposed in the central tube 5000. The interior of the drainage blade 7000 is hollow, and it extends along the circumference of the central tube 5000 and closely adheres to the inner wall of the central tube 5000, so as to better drain the accumulated water inside the central tube 5000, for example, Fig.15As shown in the figure, the drainage blade 7000 has a curved shape along the inner wall of the central pipe 5000.

[0099] One end of the outlet pipe 4000 extends into the central pipe 5000 for a certain length. One end of the drainage blade 7000 is connected (eg, fixedly connected) to the portion of the outlet pipe 4000 extending into the central pipe 5000 and is in fluid communication with the outlet pipe 4000, and the other end has an opening.

[0100] The end of the outlet pipe 4000 connected with the drainage blade 7000 is provided with a plug 4001 for closing one end of the outlet pipe 4000, thereby preventing water from flowing out of the end of the outlet pipe 4000. According to a preferred embodiment of the present application, the plug 4001 is fixedly welded to the outlet pipe 4000.

[0101] The accumulated water in the central shaft 5000 can enter the drain blade 7000 through the opening of the drain blade 7000, and the accumulated water is sent into the outlet pipe 4000 through the rotation of the drain blade 7000, so that the water at the low water level in the central pipe 5000 is brought to the high water level of the outlet pipe through the drain blade 7000, and then flows away by gravity.

[0102] In order to ensure that water entering the outlet pipe 4000 does not flow back into the central pipe 5000, the opening of the drain blade 7000 extends beyond the line connecting the downstream connection point of the drain blade 7000 and the outlet pipe 4000 and the highest point of the outlet pipe 4000 between the connection point of the drain blade 7000 and the outlet pipe 4000.

[0103] For example, Fig. 17B As shown, when the line ao connecting the connection point a located downstream between the drain blade 7000 and the outlet pipe 4000 and the highest point o located between the connection points of the drain blade 7000 and the outlet pipe 4000 is in a horizontal state, the position b at which the opening of the drain blade 7000 is located extends beyond the horizontal line ao connecting the connection point a and the point o.

[0104] When the line a and o are in a horizontal state, a part of the water in the central tube 5000 begins to flow back into the drainage blade 7000. The position b where the opening of the drainage blade 7000 is located is higher than the horizontal line, and the water will not flow back into the central tube 5000 from the opening of the drainage blade 7000.

[0105] like Fig.18 As shown, it shows a schematic diagram of the drainage process of a discharge structure with a drainage blade.

[0106] During the operation of the disc dryer, the drainage blades 7000 are provided to discharge the accumulated water inside the central tube, thereby ensuring the heat of the steam in the disc structure, thereby better protecting the central tube.

[0107] like Fig.19A , which shows a discharge structure with two drainage blades 7100. In addition to the two drainage blades 7100 provided in the central pipe 5000, Fig.19A Other arrangements of the discharge structure shown are Fig.16 The drainage structure shown in FIG. 5 is basically the same, for example, the drainage blade 7100 is arranged in the central tube 5000 and extends along the circumference of the central tube 5000 close to the inner wall, so as to better drain the accumulated water inside the central tube 5000, and the interior of the drainage blade 7100 is hollow, so the description of the drainage blade 7100 is omitted here. Fig.16 The same parts of the embodiments shown.

[0108] like Fig.19A As shown, the two drainage structures 7100 in the central pipe 5000 are arranged opposite to each other along the circumference of the portion of the outlet pipe 4000 extending into the central pipe 5000 , that is, they are spaced 180 degrees apart along the circumference of the outlet pipe 4000 .

[0109] In order to ensure that the water entering the outlet pipe 4000 does not flow back into the central pipe 5000, the opening of the drainage blade 7100 extends beyond the line connecting the downstream connection point of the drainage blade 7100 and the outlet pipe 4000 and the center point of the central pipe 4000.

[0110] For example, Fig.19B As shown, when the line ao' connecting the downstream connection point a of the drainage blade 7100 and the outlet pipe 4000 and the center point o' of the central pipe 4000 is horizontal, the position b of the opening of the drainage blade 7100 extends beyond the horizontal line ao' connecting the connection point a and the center point o'.

[0111] When the line a and o' are horizontal, part of the water in the central tube 5000 begins to flow back into the drainage blade 7100. The position b where the opening of the drainage blade 7100 is located is higher than the horizontal line, and water will not flow back into the central tube 5000 from the opening of the drainage blade 7100.

[0112] Furthermore, when two drainage blades are provided in the central tube 5000, two groups of drainage blades 7100 will deliver water from the central tube 5000 into the outlet pipe 4000 every time the discharge mechanism rotates one circle. If the same drainage flow rate as when a single drainage blade is provided is to be ensured, the water level in the outlet pipe 4000 cannot be lower than half.

[0113] like Fig. 20 As shown, it shows a schematic diagram of the drainage process of a drainage structure with two drainage blades.

[0114] Of course, multiple sets of drainage blades can be set in the central tube 5000 as needed.

[0115] Just like a discharge structure with a drainage blade, two or more drainage blades are provided in the central tube to discharge the accumulated water inside the central tube, thereby ensuring the heat of the steam in the disc structure, thereby better protecting the central tube.

[0116] like Figure 21 to Figure 24 As shown, it shows a discharge structure in which a reducer is provided between the central pipe and the water outlet pipe.

[0117] As shown in the figure, the discharge structure according to this embodiment includes a central pipe 5000, a water outlet pipe 4000, and a reducer 8000 disposed between the central pipe 5000 and the water outlet pipe 4000. The diameter of the central pipe 5000 is larger than the diameter of the water outlet pipe 4000. The large end of the reducer 8000 is connected to the central pipe 5000, and the small end thereof is connected to the water outlet pipe 4000. A plurality of spiral blades 7200 are disposed in the reducer 8000. The spiral blades 7200 overlap each other, and each spiral blade has a spiral line shape (such as Figures 21 to 23 In addition, the spiral blades 7200 are arranged along the circumference of the inner wall of the reducer 8000. Preferably, the spiral blades are arranged at equal intervals along the circumference of the inner wall of the reducer structure.

[0118] like Fig.23 As shown, the spiral blade 7200 has a relatively small thickness and a relatively large width. Fig.21 As shown, the side surface of the spiral blade 7200 is connected to the inner wall of the reducer 8000, for example, fixed to the inner wall of the reducer 8000 by welding.

[0119] And, if Fig.24 As shown, during the drainage process through the spiral blade 7200, the first point d of the spiral blade 7200 close to the central axis of the reducer 8000 is higher than the second point e where the spiral blade 7200 is connected to the large end of the reducer 8000, and the second point e is higher than the third point f where the spiral blade 7200 is connected to the small end of the reducer 8000.

[0120] When the hollow shaft 3000 rotates, it drives the central tube 5000 to rotate, and then drives the reducer 8000 and the spiral blade 7200 to rotate. Through the spiral blade 7200, water flows from a high point to a low point, so that the water flow is gathered to the connection between the spiral blade 7200 and the large end of the reducer 8000, and from the connection to the connection between the spiral blade 7200 and the small end of the reducer 8000. The gathered water flows into the water outlet pipe due to gravity, and then transfers the liquid from the low water level to the high water level.

[0121] The accumulated water inside the central tube can be discharged through the discharge structure with spiral blades, thereby ensuring the heat of the steam in the disc structure, thereby better protecting the central tube.

[0122] Furthermore, according to another aspect of the present application, a disc dryer comprising any one of the above-mentioned discharge structures is provided.

[0123] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A long water retaining plate (300) for a disc dryer disc structure, characterized in that: The long water retaining plate (300) comprises: A main body (301), the main body (301) comprising a first side surface (305) connected to the disc structure and a second side surface opposite to the first side surface; and A bending portion (303), wherein the bending portion is arranged on the second side surface, and the bending portion (303) extends from the second side surface in a manner inclined relative to the main body (301), and the inclination angle of the bending portion (303) relative to the main body (301) is greater than or equal to 90 degrees.

2. The long water retaining plate according to claim 1, characterized in that: The bending portion (303) is inclined at an angle between 90 degrees and 100 degrees relative to the main body (301).

3. The long water retaining plate according to claim 1 or 2, characterized in that: The bent portion (303) is arranged on the second side surface along the entire length of the main body (301).

4. A disc dryer disc structure, characterized in that: The disc structure comprises at least a long water retaining plate according to any one of claims 1 to 3.

5. The disc dryer disc structure according to claim 4, characterized in that: The disc structure also includes a large disc and a small disc, the first side surface (305) of the long water retaining plate (300) is arranged on one of the large disc and the small disc, and the bent portion (303) of the long water retaining plate is attached to the other of the large disc and the small disc.

6. The disc dryer disc structure according to claim 4 or 5, characterized in that: The plane where the long water baffle (300) is located is deflected relative to a plane passing through the connection between the long water baffle and the disc where the long water baffle is located and perpendicular to the disc where the long water baffle is located.

7. The disc structure of the disc dryer according to claim 6, characterized in that: The plane where the long water baffle (300) is located is deflected by 5 to 10 degrees relative to a plane passing through the connection between the long water baffle and the disc where the long water baffle is located and perpendicular to the disc where the long water baffle is located.

8. The disc structure of the disc dryer according to claim 5, characterized in that: The disc structure is provided with two long water baffles, and the two long water baffles are arranged opposite to each other across a first opening arranged in the middle of the large disc or a second opening arranged in the middle of the small disc.

9. The disc dryer disc structure according to claim 4 or 5, characterized in that: The disc structure is provided with a plurality of the long water baffles, and the plurality of the long water baffles are arranged at intervals along the circumference of the disc where they are located.

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