Disc type drying machine hollow shaft anti-steam-locking drainage system
By designing a siphon and a steam-water separator, the steam lock problem caused by the mixture of steam and condensate in the disc dryer was solved, achieving efficient utilization of steam and efficient operation of the steam trap, thus improving the stability and energy efficiency of the equipment.
Patent Information
- Application Number
- CN202520571971.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-28
AI Technical Summary
In existing disc dryers, the mixture of steam and condensate causes steam lock in the drainage channels, affecting equipment efficiency and safety. Furthermore, traditional methods of breaking steam lock result in significant steam waste.
It adopts a siphon tube, steam-water separator and multi-inlet pipeline design to separate condensate and steam. The condensate is discharged through the steam trap and the steam is reused as a heat source, avoiding the need for an open exhaust valve and improving the drainage efficiency.
It effectively prevents steam lock, improves equipment operation stability and processing capacity, saves steam energy, and enhances steam trap efficiency.
Smart Images
Figure CN223950771U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage treatment technical field especially relates to a hollow shaft anti-steam lock drainage system of disc type drying machine. BACKGROUND
[0002] Most disc type drying machines are by siphon and drainage pipeline to drain steam and condensate mixture into float ball type trap, and the float ball type trap discharges condensate through the principle of density difference, and retains steam. If a large amount of steam in the mixture enters the drainage valve and the pipeline connected therewith and occupies the drainage channel of the condensate, the condensate cannot be drained into the drainage valve, and steam lock is formed. Only when the steam in the channel is pre-condensed into liquid water, the steam lock can be broken. Steam lock in the drainage channel can greatly reduce the heat exchange efficiency of the disc type drying machine, affect the equipment capacity, and the condensate retained in the drying machine is easy to produce water hammer, which directly affects the safety of the drying machine.
[0003] The manufacturers on the market open holes on the drainage valve body and install exhaust valves, or install exhaust valves in the drainage valve. The principle is to keep the exhaust valve a certain opening and produce a certain leakage to make the steam and condensate in the steam-water mixture always drain to achieve the purpose of breaking the steam lock. This steam lock breaking method makes the drainage valve still drain outside during the operation time without steam lock failure, which sacrifices the drainage efficiency of the drainage valve and causes serious steam waste. In addition, it is difficult to control the opening adjustment of the exhaust valve. If the opening is too small, the steam lock breaking effect cannot be achieved, and if the opening is too large, the steam waste is serious. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a hollow shaft anti-steam lock drainage system of disc type drying machine to solve the above technical problems.
[0005] The utility model adopts the technical scheme as follows:
[0006] A hollow shaft anti-steam lock drainage system of disc type drying machine, comprising a hollow shaft, a body jacket, a siphon, a steam-water separator, a steam pipeline, a first drainage valve, a second drainage valve, a first air inlet pipeline and a second air inlet pipeline, the outer side of the hollow shaft is sleeved with the body jacket, a cavity is formed between the body jacket and the hollow shaft, one end of the steam pipeline is connected with the first air inlet pipeline and the second air inlet pipeline, the first air inlet pipeline is communicated with both ends of the hollow shaft, the second air inlet pipeline is connected with the cavity and the steam-water separator, the water outlet end of the steam-water separator is connected with the first drainage valve, a plurality of second drainage valves are arranged on the outer side of the body jacket, the cavity is connected with the second drainage valves, one end of the siphon is communicated with the inside of the hollow shaft.
[0007] As preferred, a first rotary joint is further included, one end of the hollow shaft is provided with the first rotary joint, and the first air inlet pipeline is connected with the hollow shaft through the first rotary joint.
[0008] As preferred, a second rotary joint is further included, the other end of the hollow shaft is provided with the second rotary joint, the second rotary joint is provided with two independent channels, which are divided into a first channel and a second channel, the other end of the siphon pipe is communicated with the first channel, the second channel is communicated with the inside of the hollow shaft, and the first channel is communicated with the steam-water separator.
[0009] As preferred, the second air inlet pipeline includes a main pipeline and branch pipelines, one end of the main pipeline is connected with the steam pipeline, the other end of the main pipeline is connected with the steam-water separator, one end of each of the branch pipelines is connected with the main pipeline, and the other end of each of the branch pipelines is communicated with the cavity.
[0010] As further preferred, a hollow shaft steam valve is further included, and the other end of the main pipeline is provided with the hollow shaft steam valve.
[0011] As preferred, a hollow shaft steam inlet valve is further included, and the first air inlet pipeline is provided with the hollow shaft steam inlet valve.
[0012] As further preferred, a body jacket steam inlet valve is further included, and one end of the main pipeline is provided with the body jacket steam inlet valve.
[0013] The above technical scheme has the following advantages or beneficial effects:
[0014] In the utility model, through the setting of the siphon pipe, the steam-water separator, the first air inlet pipeline and the second air inlet pipeline, the mixture of condensed water and steam in the hollow shaft can be discharged into the steam-water separator for separation, the separated condensed water can be directly discharged by the first drain valve, and the separated steam can be used as a heat source and enter the cavity through the second air inlet pipeline for repeated use, compared with the hole opening on the drain valve body and the installation of the air exhaust valve, or the steam breaking lock scheme with a certain leakage amount by the built-in air exhaust valve of the drain valve, the utility model can improve the drain efficiency of the drain valve and save a large amount of steam energy. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is the schematic diagram of the hollow shaft anti-steam lock drain system of the disc type drying machine in the utility model.
[0016] In the figure: 1, hollow shaft; 2, body jacket; 3, siphon; 4, steam-water separator; 5, steam pipeline; 6, first steam trap; 7, second steam trap; 8, first air inlet pipeline; 9, second air inlet pipeline; 901, main pipeline; 902, branch pipeline; 10, first rotary joint; 11, second rotary joint; 12, hollow shaft steam valve; 13, hollow shaft steam inlet valve; 14, body jacket steam inlet valve; 15, steam inlet main valve; 16, disc dryer. DETAILED DESCRIPTION
[0017] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0018] In the description of the present application, it should be noted that, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", "third" appear, they are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0019] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, if terms such as "mounting", "connecting", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0020] Figure 1 is a schematic diagram of the steam lock prevention and drainage system of the hollow shaft of the disc dryer in the present application. Please refer to Figure 1As shown, a preferred embodiment is shown, showing a kind of hollow shaft steam lock drainage system in disc dryer, including hollow shaft 1, body jacket 2, siphon 3, steam-water separator 4, steam pipeline 5, first drain valve 6, second drain valve 7, first air inlet pipeline 8 and second air inlet pipeline 9, the outer side of the hollow shaft 1 is sleeved with the body jacket 2, the cavity is formed between the body jacket 2 and the hollow shaft 1, one end of the steam pipeline 5 is connected with the first air inlet pipeline 8 and the second air inlet pipeline 9, the first air inlet pipeline 8 is communicated with both ends of the hollow shaft 1, the second air inlet pipeline 9 is connected with the cavity and the steam-water separator 4, the water outlet end of the steam-water separator 4 is connected with the first drain valve 6, the outer side of the body jacket 2 is provided with a plurality of second drain valves 7, the cavity is connected with the second drain valve 7, one end of the siphon 3 is communicated with the inside of the hollow shaft 1. Figure 1 As shown, the steam pipeline 5 is used to be connected with external steam equipment, and is used to provide heat source for the whole system, wherein the first air inlet pipeline 8 is communicated with the hollow shaft 1, and is used to provide steam to the inside of the hollow shaft 1, and the steam condenses to produce condensed water in the inside of the hollow shaft 1, and the condensed water can enter into the steam-water separator 4 under the action of the siphon 3 to be separated, and the separated condensed water is directly discharged by the first drain valve 6, without opening the opening on the first drain valve 6 to increase the exhaust valve, so as to avoid the steam lock problem, ensure the long-term reliable and stable operation of the disc dryer 16, greatly improve the processing capacity compared with the conventional one, and also greatly improve the drainage efficiency of the drain valve, and save a large amount of steam energy. The steam entering into the cavity is used to heat the outer wall of the body jacket 2 and the hollow shaft 1, and the steam entering into the inside of the hollow shaft 1 can heat the hollow shaft 1. The condensed water generated in the cavity is less relative to the hollow shaft 1, so that the condensed water in the cavity is directly discharged through the second drain valve 7, and of course, the steam-water separator 4 can also be arranged between the second drain valve 7 and the body jacket 2, so as to also avoid the steam lock phenomenon.
[0021] The first drain valve 6 and the second drain valve 7 in the embodiment are both floating ball type drain valves.
[0022] Further, as a preferred embodiment, it further includes a first rotary joint 10, one end of the hollow shaft 1 is provided with the first rotary joint 10, and the first air inlet pipeline 8 is connected with the hollow shaft 1 through the first rotary joint 10. Wherein, the first rotary joint 10 is communicated with the inside of the hollow shaft 1, and the first rotary joint 10 can rotate relative to the hollow shaft 1, and when the hollow shaft 1 rotates, the first rotary joint 10 will not rotate with it.
[0023] Further, as a preferred embodiment, a second rotary joint 11 is further included, the other end of the hollow shaft 1 is provided with the second rotary joint 11, the second rotary joint 11 has two independent channels, which are divided into a first channel and a second channel, the other end of the siphon 3 is communicated with the first channel, the second channel is communicated with the inside of the hollow shaft 1, and the first channel is communicated with the steam-water separator 4. The second rotary joint 11 can rotate relative to the hollow shaft 1, and the second rotary joint 11 will not rotate when the hollow shaft 1 rotates. The first channel and the second channel in the second rotary joint 11 are independent of each other and will not interfere with each other, and the water vapor mixture in the hollow shaft 1 can enter the first channel through the siphon 3 and then enter the steam-water separator 4. Referring to Figure 1 As shown in the figure, the first air inlet pipeline 8 has two branch pipelines, one branch pipeline is communicated with the defined rotary joint at one end of the hollow shaft 1, and the other branch pipeline is communicated with the second channel in the second rotary joint 11, so as to facilitate the delivery of hot steam into the hollow shaft 1.
[0024] Further, as a preferred embodiment, the second air inlet pipeline 9 includes a main pipeline 901 and a branch pipeline 902, one end of the main pipeline 901 is connected with the steam pipeline 5, the other end of the main pipeline 901 is connected with the steam-water separator 4, one end of the branch pipeline 902 is connected with the main pipeline 901, and the other end of the branch pipeline 902 is communicated with the chamber. In this embodiment, referring to Figure 1 As shown in the figure, steam can enter the branch pipeline 902 from the main pipeline 901, and then enter the chamber from the branch pipeline 902, and the steam separated by the steam-water separator 4 can enter the main pipeline 901, and then enter the chamber from the branch pipeline 902.
[0025] Among them, a steam inlet total valve 15 is arranged on the steam pipeline 5, which is used to control the steam entering the first air inlet pipeline 8 and the second air inlet pipeline 9.
[0026] Further, as a preferred embodiment, a hollow shaft steam valve 12 is further included, and the other end of the main pipeline 901 is provided with the hollow shaft steam valve 12. The hollow shaft steam valve 12 is used to control the steam separated by the steam-water separator 4 to enter the branch pipeline 902.
[0027] Further, as a preferred embodiment, a hollow shaft steam inlet valve 13 is further included, and the first air inlet pipeline 8 is provided with the hollow shaft steam inlet valve 13. The hollow shaft steam inlet valve 13 is used to control the steam entering the hollow shaft 1.
[0028] Further, as a preferred embodiment, the body jacket steam inlet valve 14 is further included, and one end of the main pipeline 901 is provided with the body jacket steam inlet valve 14. The body jacket steam inlet valve 14 is used for controlling the steam to enter the chamber.
[0029] In the embodiment, the controller can be arranged outside, and the steam inlet valve 15, the hollow shaft steam valve 12, the hollow shaft steam inlet valve 13 and the body jacket steam inlet valve 14 can all be solenoid valves, which are connected with the controller, and the steam inlet valve 15, the hollow shaft steam valve 12, the hollow shaft steam inlet valve 13 and the body jacket steam inlet valve 14 can be automatically opened or closed by the controller.
[0030] When the disc dryer starts to be warmed by steam, the hollow shaft steam valve 12 is closed, and the steam inlet valve 15, the hollow shaft steam inlet valve 13 and the body jacket steam inlet valve 14 are opened, so that the steam enters the large chamber and the hollow shaft 1. After the disc dryer is warmed, the body jacket steam inlet valve 14 is closed, and the hollow shaft steam inlet valve 13 is opened, and the steam-water mixture discharged from the hollow shaft 1 is discharged into the steam-water separator 4 through the siphon pipe 3 and the second rotary joint 11. The steam-water separator 4 separates the steam-water mixture, the separated steam enters the chamber as a heat source, and the separated condensed water is discharged through the first drain valve 6. The steam entering the chamber is condensed by heat exchange and discharged out of the system through the second drain valve 7.
[0031] The above only describes the preferred embodiments of the present application, and does not limit the embodiments and the protection scope of the present application. For those skilled in the art, it should be realized that any equivalent replacement and obvious change made according to the content of the present application should be included in the protection scope of the present application.
Claims
1. A steam lock drain system for a hollow shaft of a disc dryer, characterized in that The utility model provides a steam turbine, including hollow shaft, body jacket, siphon, steam-water separator, steam pipeline, first steam trap, second steam trap, first air inlet pipeline and second air inlet pipeline, the outside of hollow shaft is equipped with body jacket, and the cavity is formed between body jacket and hollow shaft, one end of steam pipeline is connected with first air inlet pipeline and second air inlet pipeline, first air inlet pipeline communicates with both ends of hollow shaft, second air inlet pipeline is connected with cavity and steam-water separator, and the water outlet end of steam-water separator is connected with first steam trap, and the outside of body jacket is provided with a plurality of second steam traps, and the cavity is connected with second steam trap, and one end of siphon communicates with the inside of hollow shaft.
2. The steam lock drain system for a hollow shaft of a disc dryer as claimed in claim 1, characterized in that Further comprising a first rotary joint, one end of the hollow shaft is provided with the first rotary joint, and the first air inlet pipeline is connected with the hollow shaft through the first rotary joint.
3. The steam lock free drainage system for a hollow shaft of a disc dryer as claimed in claim 1, wherein, Further comprising a second rotary joint, the other end of the hollow shaft is provided with the second rotary joint, the second rotary joint has two independent channels, which are divided into a first channel and a second channel, the other end of the siphon communicates with the first channel, the second channel communicates with the inside of the hollow shaft, and the first channel communicates with the steam-water separator.
4. The steam lock free drain system for a hollow shaft of a disc dryer as claimed in claim 1, wherein, The second air inlet pipeline comprises a main pipeline and branch pipelines, one end of the main pipeline is connected with the steam pipeline, the other end of the main pipeline is connected with the steam-water separator, one end of each of the branch pipelines is connected with the main pipeline, and the other end of each of the branch pipelines communicates with the cavity.
5. The steam lock free drainage system for a hollow shaft of a disc dryer as claimed in claim 4, characterized in that, Further comprising a hollow shaft steam valve, the other end of the main pipeline is provided with the hollow shaft steam valve.
6. The steam lock free drainage system for a hollow shaft of a disc dryer as claimed in claim 1, wherein, Further comprising a hollow shaft steam inlet valve, the first air inlet pipeline is provided with the hollow shaft steam inlet valve.
7. The steam lock free drain system for a hollow shaft of a disc dryer as claimed in claim 4, wherein Further comprising a body jacket steam inlet valve, one end of the main pipeline is provided with the body jacket steam inlet valve.