Fluid distribution device of falling film evaporator

Abstract

The invention discloses a fluid distribution device of a falling film evaporator, and relates to the technical field of machining equipment, the technical scheme comprises an evaporator body, a fixing frame and a communicating pipe, the fixing frame is arranged at the lower end of the evaporator body, and the communicating pipe is connected to the air outlet end of the evaporator body; in addition, the device is further provided with a valve control assembly and an acceleration flow guide mechanism, the valve control assembly and the acceleration flow guide mechanism are communicated with the communicating pipe, and the valve control assembly is located between the communicating pipe and the acceleration flow guide mechanism. The valve control assembly comprises a valve assembly and a control assembly, the valve assembly controls steam on-off according to a pressure threshold value, and the control assembly can preset the pressure threshold value; the acceleration flow guide mechanism is composed of a driven assembly and an air draft assembly, the air draft assembly exhausts air through rotation of fan blades, and the driven assembly can adjust the angle between the fan blades and the airflow section according to the pressure of exhausted air; the pressure threshold value is set by means of the control assembly, so that the device can flexibly regulate and control steam on-off and flow according to different working requirements, and the applicability and the working efficiency of the evaporator are improved.

Description

Technical Field

[0001] This invention relates to the field of machining equipment technology, and more specifically to a fluid distribution device for a falling film evaporator. Background Technology

[0002] In numerous industrial sectors such as chemical, food, and pharmaceutical, falling film evaporators are widely used in processes such as liquid concentration and evaporation. However, traditional falling film evaporators often suffer from problems with their fluid distribution devices during operation, affecting the overall performance and efficiency of the evaporator.

[0003] Firstly, in terms of steam control, traditional valve control components typically employ a relatively simple pressure control method, making it difficult to precisely adjust the pressure threshold according to different operating conditions. This results in either premature valve opening when steam pressure fluctuates significantly, causing insufficiently evaporated steam to escape and affecting evaporation efficiency, or delayed opening, leading to excessively high pressure inside the evaporator and posing a safety hazard.

[0004] Secondly, traditional devices lack effective adaptive adjustment mechanisms for guiding and accelerating steam. The exhaust components often operate at a fixed speed and angle, unable to adjust in real time according to the actual flow rate and pressure of the steam, resulting in insufficient exhaust capacity when the steam flow is high, and energy waste when the flow rate is low. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fluid distribution device for a falling film evaporator.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A fluid distribution device for a falling film evaporator includes an evaporator body, a mounting bracket, and a connecting pipe. The mounting bracket is fixedly installed at the lower end of the evaporator body, and the connecting pipe is fixedly installed at the outlet end of the evaporator body. The device also includes a valve control assembly and an acceleration guiding mechanism. The connecting pipe, the valve control assembly, and the acceleration guiding mechanism are interconnected, and the valve control assembly is located between the connecting pipe and the acceleration guiding mechanism.

[0008] The valve control assembly includes a valve assembly installed at the end of the connecting pipe away from the evaporator body and a control assembly disposed within the valve assembly. The valve assembly shuts off or allows steam gas to flow according to a pressure threshold, and the control assembly is used to control the preset pressure threshold in the valve assembly.

[0009] The acceleration and flow guiding mechanism includes a driven component and an exhaust component located at the end of the valve control assembly away from the connecting pipe. The exhaust component includes a fan blade. The exhaust component extracts the gas passing through the valve assembly by rotating the fan blade. The driven component adjusts the cross-sectional angle between the fan blade and the airflow in the exhaust component according to the pressure of the gas discharged from the valve assembly.

[0010] As a further improvement of the present invention, the valve assembly includes a valve body, with an air inlet channel and an air outlet channel respectively provided at both ends of the valve body. A baffle plate is provided in the cavity of the valve body, and a through hole is opened on the baffle plate. A valve seat is also threadedly provided in the cavity of the valve body, and a valve stem is slidably provided on the valve seat. A valve disc is threadedly fixed at the lower end of the valve stem. The valve disc is normally tightly fitted to the through hole on the baffle plate. A one-way diaphragm is sleeved on the outer wall of the valve disc. The one-way diaphragm is flexibly connected to the baffle plate. A pin is fixedly provided at the upper end of the valve stem, and a magnet is provided inside the pin.

[0011] As a further improvement of the present invention, the valve seat divides the internal cavity of the valve body into upper and lower cavities, and the baffle plate, when in cooperation with the valve disc and the one-way diaphragm, is used to divide the lower cavity into an air inlet cavity and an air outlet cavity.

[0012] As a further improvement of the present invention, the control component includes a mounting seat disposed in the upper cavity of the valve body, the mounting seat having a through groove for the passage of the ejector pin, and a plurality of magnets being slidably disposed on the mounting seat;

[0013] The valve body has a fixed seat on its top inner wall, and a sliding sleeve is slidably provided in the fixed seat. Multiple sliding grooves are provided on the outer wall of the fixed seat, and multiple sliding rods are hinged on the outer wall of the sliding sleeve. The magnet, the sliding rod and the sliding groove correspond one-to-one, and the other end of the sliding rod passes through the sliding groove and is hinged to the magnet. The top of the valve body has a rotating core, and the lower end of the rotating core passes through the top of the valve body and is threaded to the sliding sleeve.

[0014] As a further improvement of the present invention, the magnetic pole direction of each of the first magnets is: N at the top and S at the bottom; the magnetic pole direction of the second magnet is: N at the top and S at the bottom.

[0015] As a further improvement of the present invention, the driven component includes a connecting cylinder disposed on one side of the valve control component and connected to the air outlet channel, and a plurality of arc-shaped plates that fit the inner wall of the connecting cylinder are evenly arranged along the axis inside the connecting cylinder.

[0016] The driven component also includes a mounting sleeve, with spherical bodies fixedly provided on the inner walls of both ends of the mounting sleeve, and connecting columns fixedly provided on the inner walls of the two spherical bodies. A wind baffle plate is fixedly provided at one end of the connecting column. Multiple fixing plates are evenly provided along the axis on the outer wall of the mounting sleeve. A connecting part is hinged on each fixing plate, and the other end of the connecting part is hinged to the arc plate. The arc plate corresponds to the fixing plate one by one.

[0017] As a further improvement of the present invention, the connecting part includes a set of connecting rods 1 hinged to the fixed plate. There are two connecting rods 1 in total. Each connecting rod 1 has a slider on both sides. Each connecting rod 1 has a set of connecting rods 2 on both sides. Each connecting rod 2 has a sliding groove. The connecting rod 1 is slidably connected to the connecting rod 2 through the cooperation of the slider and the sliding groove. The diameter of the end of each slider that protrudes from the sliding groove is greater than the width of the sliding groove.

[0018] As a further improvement of the present invention, a spring is fixedly provided in the groove of the second connecting rod, and the spring is used to assist the first connecting rod and the second connecting rod in sliding and then resetting.

[0019] As a further improvement of the present invention, the exhaust assembly includes a mounting sleeve fixedly disposed on one end of the connecting column that extends through the mounting sleeve, a mounting body being fixedly disposed on the mounting sleeve by bolts, and a hinge rod being hinged to each of the four protruding ends of the mounting body.

[0020] The other end of the connecting column is provided with a sliding column, and a bearing seat is fixed on the sliding column by bolts. Multiple rotating seats are uniformly rotatable on the bearing seat. The other end of each hinge rod is hinged to the outer wall of each rotating seat. The rotating seats correspond one-to-one with the hinge rods. Each rotating seat is fixedly connected to the fan blade by bolts.

[0021] The beneficial effects of this invention are:

[0022] 1. This invention allows for the preset pressure threshold of the valve assembly through a control component within the valve control assembly. The rotation of the rotating core causes the sliding sleeve to slide within the fixed seat, which in turn drives the sliding rod to slide multiple magnets on the mounting base. Due to the interaction of the magnetic poles between magnets, the force on the valve stem is altered, thereby adjusting the pressure required for valve opening and achieving precise control of the steam flow rate. This allows the device to flexibly adjust the steam on / off state and flow rate according to different operational needs, improving the applicability and efficiency of the evaporator.

[0023] 2. The present invention uses a one-way diaphragm flexible connection baffle plate sleeved on the outer wall of the valve disc to prevent steam backflow and ensure that steam can only flow in a predetermined direction, thus guaranteeing the stability and safety of the system.

[0024] 3. This invention utilizes the rotation of the fan blades in the exhaust assembly to extract gas passing through the valve assembly, accelerating the gas flow rate within the device. This helps improve the heat exchange efficiency of the evaporator, allowing steam to pass through the device more quickly and reducing the residence time of steam within the evaporator, thereby enhancing the overall system efficiency.

[0025] 4. This invention, through its driven component, can adjust the cross-sectional angle between the fan blades and the airflow in the exhaust assembly according to the pressure of the gas discharged from the valve assembly. When the discharged gas pressure is high, the arc-shaped plate inside the connecting cylinder will be subjected to pressure, which will drive the fixed plate to rotate through the connecting part, thereby changing the position of the wind baffle on the connecting column, ultimately adjusting the angle between the fan blades and the airflow, allowing the fan blades to better adapt to different gas flow rates and pressures, and further optimizing the gas acceleration and guiding effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a fluid distribution device for a falling film evaporator according to the present invention;

[0027] Figure 2 This is a schematic diagram of the combined structure of multiple magnets of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of multiple magnets spread out in this invention;

[0029] Figure 4 This is a partial cross-sectional view of the structure of the driven component and the exhaust component of the present invention.

[0030] Figure 5 This is a schematic diagram of the exhaust assembly of the present invention;

[0031] Figure 6 This is a three-dimensional structural diagram of the exhaust assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the driven component of the present invention;

[0033] Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point A.

[0034] Reference numerals: 100, Evaporator body; 101, Mounting bracket; 102, Connecting pipe; 200, Valve control assembly; 201, Inlet passage; 202, Valve body; 2021, Mounting base; 2022, Magnet one; 2023, Slide rod; 2024, Mounting base; 2025, Sliding sleeve; 2026, Rotating core; 203, Outlet passage; 204, Baffle plate; 205, Valve disc; 2051, One-way diaphragm; 2052, Valve stem; 2053, Pin; 206, Magnet two; 207, Valve seat; 300. Acceleration and airflow guiding mechanism; 301, connecting cylinder; 302, exhaust assembly; 3021, mounting sleeve; 3022, mounting body; 3023, hinge rod; 3024, sliding column; 3025, bearing seat; 3026, rotating seat; 3027, fan blade; 3028, spherical body; 303, driven assembly; 3031, arc plate; 3032, mounting sleeve; 3033, wind baffle; 3034, connecting column; 3035, fixing plate; 3036, connecting rod one; 3037, connecting rod two; 3038, spring. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. The components of the embodiments of this disclosure described and shown herein can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this disclosure is not intended to limit the scope of the claimed disclosure, but merely represents selected embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0036] Example 1

[0037] refer to Figures 1-8 As shown, the present invention discloses a fluid distribution device for a falling film evaporator, including an evaporator body 100, a fixing frame 101 and a connecting pipe 102. The fixing frame 101 is fixedly installed at the lower end of the evaporator body 100, and the connecting pipe 102 is fixedly installed at the gas outlet end of the evaporator body 100. It also includes a valve control assembly 200 and an acceleration guiding mechanism 300. The connecting pipe 102, the valve control assembly 200 and the acceleration guiding mechanism 300 are interconnected, and the valve control assembly 200 is located between the connecting pipe 102 and the acceleration guiding mechanism 300.

[0038] The valve control assembly 200 includes a valve assembly installed at the end of the connecting pipe 102 away from the evaporator body 100 and a control component disposed within the valve assembly. The valve assembly shuts off or allows steam gas to flow according to a pressure threshold, and the control component is used to control the preset pressure threshold in the valve assembly.

[0039] The acceleration and flow guiding mechanism 300 includes a driven component 303 and an exhaust component 302 located at the end of the valve control component 200 away from the connecting pipe 102. The exhaust component 302 includes a fan blade 3027. The exhaust component 302 extracts the gas passing through the valve assembly by rotating the fan blade 3027. The driven component 303 adjusts the cross-sectional angle between the fan blade 3027 and the airflow in the exhaust component 302 according to the pressure of the gas discharged from the valve assembly.

[0040] The mounting bracket 101 provides support for the evaporator body 100, ensuring its stability. The connecting pipe 102 connects the evaporator body 100 with the valve control assembly 200 and the acceleration and guiding mechanism 300, forming a steam and gas flow channel. The valve control assembly 200 and the acceleration and guiding mechanism 300 are interconnected, constituting a system for controlling and accelerating the flow of steam and gas.

[0041] Furthermore, the driven component 303 adjusts the cross-sectional angle between the fan blade 3027 and the airflow in the exhaust component 302 according to the pressure of the gas discharged from the valve assembly. The exhaust component 302 drives the fan blade 3027 to rotate through a drive device such as a motor, generating suction force.

[0042] Working principle: When the valve assembly discharges gas, the gas pressure acts on the driven component 303, which changes the angle between the fan blade 3027 and the airflow according to the pressure. Driven by the motor, the fan blade 3027 rotates, drawing out the gas passing through the valve assembly and accelerating its discharge.

[0043] The steam generated by the evaporator body 100 enters the valve control assembly 200 through the connecting pipe 102. The valve control assembly 200 controls the flow of the steam according to the preset pressure value. Then, the controlled steam enters the acceleration and guiding mechanism 300 and is accelerated and guided out.

[0044] The valve assembly includes a valve body 202, with an inlet channel 201 and an outlet channel 203 at both ends of the valve body 202. A baffle plate 204 is provided inside the cavity of the valve body 202, and a through hole is provided on the baffle plate 204. A valve seat 207 is also threaded inside the cavity of the valve body 202. A valve stem 2052 is slidably mounted on the valve seat 207. A valve disc 205 is threadedly fixed at the lower end of the valve stem 2052. The valve disc 205 is normally tightly fitted to the through hole on the baffle plate 204. A one-way diaphragm 2051 is sleeved on the outer wall of the valve disc 205. The one-way diaphragm 2051 is flexibly connected to the baffle plate 204. A pin 2053 is fixed at the upper end of the valve stem 2052, and a magnet 206 is provided inside the pin 2053.

[0045] Valve seat 207 divides the inner cavity of valve body 202 into upper and lower cavities. When baffle plate 204 cooperates with valve disc 205 and one-way diaphragm 2051, it is used to divide the lower cavity into air inlet cavity and air outlet cavity.

[0046] The valve body 202 has an inlet channel 201 and an outlet channel 203 at both ends for steam and gas to enter and exit. The through holes on the baffle plate 204 provide a flow path for the steam and gas. The valve seat 207 is threadedly connected to the valve body 202 and its installation position is adjustable. The valve stem 2052 slides within the valve seat 207, and the valve disc 205 is threadedly fixed to the valve stem 2052, allowing it to move up and down with the valve stem 2052. A one-way diaphragm 2051 flexibly connects the baffle plate 204 and the valve disc 205, sealing and guiding the airflow direction when the valve disc 205 moves, while preventing backflow. A pin 2053 is fixed to the upper end of the valve stem 2052, and a magnet 206 is installed inside the pin 2053.

[0047] Under normal conditions, valve disc 205 tightly fits against the through hole on baffle plate 204, preventing the flow of steam and gas. When the steam and gas pressure in the inlet channel 201 reaches a certain value, it pushes valve disc 205 upward. Valve disc 205 then moves valve stem 2052 and ejector pin 2053 upward, allowing steam and gas to enter the outlet channel 203 through the through hole on baffle plate 204. One-way diaphragm 2051 ensures unidirectional gas flow and prevents backflow.

[0048] The control assembly includes a mounting base 2021 disposed in the upper cavity of the valve body 202. The mounting base 2021 has a through groove for the passage of the ejector pin 2053. A plurality of magnets 2022 are slidably disposed on the mounting base 2021.

[0049] The valve body 202 has a fixed seat 2024 on the top inner wall, and a sliding sleeve 2025 is slidably provided in the fixed seat 2024. Multiple sliding grooves are opened on the outer wall of the fixed seat 2024. Multiple sliding rods 2023 are hinged on the outer wall of the sliding sleeve 2025. The magnet 2022, the sliding rods 2023 and the sliding grooves correspond one-to-one, and the other end of the sliding rod 2023 passes through the sliding groove and is hinged on the magnet 2022. The top of the valve body 202 has a rotating core 2026, and the lower end of the rotating core 2026 passes through the top of the valve body 202 and is threaded to the sliding sleeve 2025.

[0050] The mounting base 2021 provides a mounting and sliding track for magnet 2022. Multiple magnets 2022 can slide on the mounting base 2021. The fixed base 2024 is fixed to the inner wall of the top of the valve body 202, and the sliding sleeve 2025 slides within the fixed base 2024. One end of the slide rod 2023 is hinged to the outer wall of the sliding sleeve 2025, and the other end passes through a groove in the outer wall of the fixed base 2024 and is hinged to the magnet 2022, converting the vertical movement of the sliding sleeve 2025 into the radial movement of the magnet 2022. The rotating core 2026 is rotatably mounted on the top of the valve body 202, and its lower end is threadedly connected to the sliding sleeve 2025. The position of the sliding sleeve 2025 can be adjusted by rotating the rotating core 2026.

[0051] When the rotating core 2026 rotates, it drives the sliding sleeve 2025 to move up and down through engagement. Specifically, when the rotating core 2026 rotates in the forward or reverse direction, the outer wall of the sliding sleeve 2025 slides up or down along the slide rail on the fixed base 2024 under the action of thread engagement. When the sliding sleeve 2025 moves, it drives the magnet 2022 to slide radially on the mounting base 2021 through the slide rod 2023. The change in the position of the magnet 2022 will change the magnetic field interaction between it and the magnet 206.

[0052] The magnetic poles of each magnet 2022 are: N (North Pole) at the top and S (South Pole) at the bottom; the magnetic poles of magnet 206 are: N at the top and S at the bottom.

[0053] Furthermore, after multiple magnets 2022 are combined, they form a strong and relatively concentrated magnetic field with magnet 206. When valve disc 205 moves upward due to steam pressure, it drives pin 2053 and magnet 206 to move upward. Attracted by the magnetic field of the magnetic ring formed by magnet 2022, a relatively large steam pressure is required for valve disc 205 to continue moving upward and opening the channel. That is, a high pressure threshold is set. Only when the steam pressure reaches this high pressure threshold will the valve assembly open to allow steam to flow.

[0054] Specifically, the preset gas pressure under this condition is set to A1. When multiple magnets 2022 merge to form a single magnetic ring, the magnetic ring exhibits a polarity distribution with the top facing N and the bottom facing S. Magnet 206 also has a polarity orientation with the top facing N and the bottom facing S. Due to the repulsion between like poles and the attraction between unlike poles, the N pole of magnet 206 is strongly attracted by the S pole of the magnetic ring, while the S pole of magnet 206 is repelled by the N pole of the magnetic ring. This combined attraction and repulsion keeps magnet 206 firmly bound by the magnetic ring. Because magnet 206 is rigidly connected to valve 205 via pin 2053 and valve stem 2052, the magnetic force on magnet 206 is directly transmitted to valve 205, greatly hindering the upward movement of valve 205 due to the steam gas pressure. Only when the steam gas pressure is high enough to overcome the combined magnetic force (i.e., the effect represented by A1) exerted by the magnetic ring on the magnet 206 can the valve disc 205 move the magnet 206 upward, thereby opening the valve and allowing the steam gas to pass through.

[0055] Multiple magnets 2022 slide outward along the mounting base 2021, with gaps between each magnet 2022. In this case, the multiple magnets 2022 are relatively dispersed, and the magnetic flux between them and magnet 206 changes, resulting in a relatively weaker magnetic field strength. When valve disc 205 moves upward due to steam pressure, causing pin 2053 and magnet 206 to move upward, the magnetic attraction it experiences is relatively small. A lower steam pressure is sufficient to cause valve disc 205 to move upward and open the channel, thus setting a lower pressure threshold. When the steam pressure is low, the valve assembly will open to allow steam to flow.

[0056] Specifically, the preset gas pressure under this condition is set to A2. In this dispersed layout, each magnet 2022 maintains its N-pole orientation at the top and S-pole at the bottom. The magnetic field generated by the numerous dispersed magnets 2022 becomes dispersed when they relatively merge into a magnetic coil. For magnet 206, its N-pole is attracted by the S-pole of each dispersed magnet 2022, but due to the dispersed distribution of magnets 2022, this attraction is weakened in space; at the same time, the repulsive force on magnet 206's S-pole from the N-pole of each dispersed magnet 2022 is also weakened accordingly. Overall, the combined magnetic force on magnet 206 from magnets 2022 is significantly reduced. Due to the connection between magnet 206 and valve 205, the resistance encountered by valve 205 when it moves upward due to the steam gas pressure is also reduced. This means that only a relatively low steam gas pressure is needed to overcome the relatively weak combined magnetic force (i.e., the influence represented by A2) of magnet 1 2022 on magnet 2 206, causing valve disc 205 to move magnet 2 206 upward, opening the valve, and realizing the flow of steam gas.

[0057] Example 2

[0058] Please refer to Figures 1-8 This embodiment is basically the same as embodiment 1. This embodiment is made on the basis of embodiment 1 and has the same beneficial effects as embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0059] As a further technical solution of this embodiment, the driven component 303 includes a connecting cylinder 301 disposed on one side of the valve control component 200 and connected to the air outlet channel 203. A plurality of arc-shaped plates 3031 that fit the inner wall of the connecting cylinder 301 are evenly disposed along the axis.

[0060] The driven component 303 also includes a mounting sleeve 3032. Spherical bodies 3028 are fixedly provided on the inner walls of both ends of the mounting sleeve 3032. Connecting columns 3034 are fixedly provided on the inner walls of the two spherical bodies 3028. A wind baffle plate 3033 is fixedly provided on one end of the connecting column 3034. Multiple fixing plates 3035 are evenly provided on the outer wall of the mounting sleeve 3032 along the axis. A connecting part is hinged on each fixing plate 3035. The other end of the connecting part is hinged to an arc plate 3031. The arc plate 3031 corresponds to the fixing plate 3035 one by one.

[0061] The connecting part includes a set of connecting rods 3036 hinged to the fixed plate 3035. There are two connecting rods 3036. Each connecting rod 3036 has a slider on both sides. Each connecting rod 3036 has a set of connecting rods 3037 on both sides. Each connecting rod 3037 has a groove. The connecting rod 3036 is slidably connected to the connecting rod 3037 through the cooperation of the slider and the groove. The diameter of the end of each slider that protrudes from the groove is greater than the width of the groove.

[0062] A spring 3038 is fixedly installed in the groove of the second connecting rod 3037. The spring 3038 is used to assist the first connecting rod 3036 and the second connecting rod 3037 in resetting after sliding.

[0063] The connecting cylinder 301 is connected to the outlet channel 203 of the valve control assembly 200, providing an entry path for steam. Multiple arc-shaped plates 3031 are evenly distributed along the inner wall of the connecting cylinder 301 and can move under the action of steam. The mounting sleeve 3032 slides on the connecting column 3034 via spherical bodies 3028 at both ends, simultaneously sealing the internal space of the mounting sleeve 3032. The connecting column 3034 is fixed between the spherical bodies 3028, and one end is equipped with a baffle plate 3033. The fixing plate 3035 is evenly arranged along the outer wall of the mounting sleeve 3032 and is hinged to the arc-shaped plates 3031 via a connecting part. The connecting part consists of a first connecting rod 3036 and a second connecting rod 3037. The first connecting rod 3036 slides through a slider that engages with the groove of the second connecting rod 3037, and the diameter of the slider extending out of the groove is larger than the width of the groove to prevent it from slipping out. A spring 3038 is used to assist in resetting.

[0064] When the steam discharged from the valve control assembly 200 enters the connecting cylinder 301, the gas pressure acts on the arc-shaped plate 3031. Under this pressure, the arc-shaped plate 3031 drives the mounting sleeve 3032 to rotate around the connecting column 3034 via the connecting part. During rotation, connecting rod one 3036 and connecting rod two 3037 slide within a groove via a slider to adapt to changes in the movement trajectory of the arc-shaped plate 3031. When the gas pressure changes, the spring 3038 assists the connecting part in resetting, thereby returning the arc-shaped plate 3031 and the mounting sleeve 3032 to their appropriate positions to adapt to different gas pressure conditions.

[0065] Specifically, when the valve control assembly 200 discharges steam gas, this gas enters the driven assembly 303 through the connecting cylinder 301, which is connected to the gas outlet passage 203. The steam gas entering the connecting cylinder 301 is evenly pressured onto multiple arc-shaped plates 3031 evenly distributed along the inner wall of the cylinder. Due to the gas pressure, the arc-shaped plates 3031 tend to rotate around the axis of the connecting cylinder 301.

[0066] At this point, the connecting part begins to function. In the connecting part, connecting rod 3036 is hinged to the fixed plate 3035, which is fixed to the outer wall of the mounting sleeve 3032. When the arc-shaped plate 3031 rotates, it pulls connecting rod 3036. Because connecting rod 3036 and connecting rod 3037 are connected by a slider and a groove, and the diameter of the slider extending out of the groove is greater than the width of the groove, this ensures that connecting rod 3036 will not detach from connecting rod 3037 during movement. As the arc-shaped plate 3031 moves, causing connecting rod 3036 to rotate, the slider on connecting rod 3036 slides within the groove of connecting rod 3037 to adapt to changes in the trajectory of the arc-shaped plate 3031. This sliding connection allows the entire connecting part to flexibly deform in accordance with the movement of the arc-shaped plate 3031.

[0067] As the connecting rod 3036 moves, the mounting sleeve 3032 is also driven to rotate around the connecting column 3034. The spherical bodies 3028 at both ends of the mounting sleeve 3032 allow it to rotate smoothly. During this process, the baffle plate 3033 at one end of the connecting column 3034 will obstruct and guide the airflow to a certain extent, affecting the flow state of the gas in the connecting sleeve 301, and thus indirectly affecting the pressure on the arc plate 3031.

[0068] When the pressure of the steam gas changes, for example, a decrease in pressure, the rotational tendency of the arc-shaped plate 3031, previously caused by pressure, weakens. At this time, the spring 3038 in the connecting part begins to function. The spring 3038, which was originally stretched or compressed when the arc-shaped plate 3031 rotated under force, releases or absorbs energy when the pressure changes, pushing connecting rod 3036 and connecting rod 3037 back to their original positions. This, in turn, returns the arc-shaped plate 3031 and the mounting sleeve 3032 to a position adapted to the new gas pressure. This reset process ensures that the driven assembly 303 operates stably under different gas pressure conditions and can adjust its own state promptly according to pressure changes.

[0069] The exhaust assembly 302 includes a mounting sleeve 3021 fixedly disposed on one end of the mounting sleeve 3032 and extending from the connecting column 3034. A mounting body 3022 is fixedly disposed on the mounting sleeve 3021 by bolts. A hinge rod 3023 is hinged to each of the four protruding ends of the mounting body 3022.

[0070] The other end of the connecting column 3034 is internally provided with a sliding column 3024. A bearing seat 3025 is fixed on the sliding column 3024 by bolts. Multiple rotating seats 3026 are uniformly rotatable on the bearing seat 3025. The other end of each hinge rod 3023 is hinged to the outer wall of each rotating seat 3026. The rotating seat 3026 corresponds one-to-one with the hinge rod 3023. Each rotating seat 3026 is fixedly connected to the fan blade 3027 by bolts.

[0071] Furthermore, when the mounting sleeve 3032 in the driven assembly 303 rotates, the connecting post 3034 connected to it will also rotate. Because the mounting sleeve 3021 is fixed to one end of the connecting post 3034, the rotation of the connecting post 3034 will directly drive the mounting sleeve 3021 to rotate. The mounting body 3022 is mounted on the mounting sleeve 3021 by bolts, so the rotation of the mounting sleeve 3021 is transmitted to the mounting body 3022.

[0072] Each of the four protruding ends of the mounting body 3022 is hinged with a hinge rod 3023. When the mounting body 3022 rotates, the hinge rods 3023 will perform circular motion under the drive of the mounting body 3022. At the same time, the other end of the connecting column 3034 is provided with a slidable slide column 3024, and a bearing seat 3025 is fixed on the slide column 3024. Multiple rotating seats 3026 are evenly rotatably mounted on the bearing seat 3025, and the other end of the hinge rod 3023 is hinged to the outer wall of the rotating seat 3026.

[0073] When the hinge rod 3023 makes a circular motion, due to its hinged relationship with the rotating seat 3026, it will exert a force on the rotating seat 3026. This force will cause the rotating seat 3026 to rotate around its rotation point on the bearing seat 3025. Since the fan blade 3027 is installed on the rotating seat 3026, the rotation of the rotating seat 3026 will drive the fan blade 3027 to rotate, thereby realizing the ventilation function.

[0074] Furthermore, the sliding of the slide column 3024 within the connecting column 3034 plays a crucial role. When the position of the arc-shaped plate 3031 in the driven assembly 303 changes due to gas pressure variations, this change is transmitted to the slide column 3024 via the connecting part, mounting sleeve 3032, and connecting column 3034. The slide column 3024 then slides within the connecting column 3034 based on the received feedback. This sliding of the slide column 3024 alters the positions of the bearing seat 3025 and the rotating seat 3026, thereby adjusting the angle between the fan blade 3027 and the airflow. For example, when the gas flow rate increases, the signal transmitted by the driven assembly 303 causes the slide column 3024 to slide, adjusting the cross-sectional angle between the fan blade 3027 and the airflow to a state more conducive to extracting a large amount of gas; when the gas flow rate decreases, the slide column 3024 slides in the opposite direction, adapting the angle of the fan blade 3027 to the smaller gas flow rate to maintain a stable suction effect.

[0075] In summary, when the valve control assembly 200 discharges steam gas into the connecting cylinder 301, the gas pressure pushes the arc-shaped plate 3031 to rotate. The arc-shaped plate 3031 pulls the mounting sleeve 3032 to rotate around the connecting column 3034 through the connecting part. The rotation of the connecting column 3034 drives the mounting body 3022 of the exhaust assembly 302 to rotate. The mounting body 3022 drives the fan blade 3027 to rotate through the hinge rod 3023, thereby achieving exhaust.

[0076] In this process, the positional change of the arc-shaped plate 3031 in the driven component 303 is crucial. The change in the position of the arc-shaped plate 3031 not only causes the mounting sleeve 3032 to rotate through the connecting part, but also transmits this change information to the sliding column 3024 through the connecting column 3034. Based on the received information, the sliding column 3024 slides within the connecting column 3034, adjusting the positions of the bearing seat 3025 and the rotating seat 3026, ultimately achieving real-time adjustment of the angle between the fan blade 3027 and the airflow cross-section. For example, when the gas pressure suddenly increases, the thrust on the arc-shaped plate 3031 increases, and the rotation amplitude increases significantly. This will cause the rotation angle of the mounting sleeve 3032 to increase, and the rotation angle of the connecting column 3034 will also increase accordingly. When this change is transmitted to the exhaust assembly 302, the slide column 3024 will slide quickly to adjust the angle of the fan blade 3027 to match the increased gas pressure and flow rate, thus extracting gas more effectively. Conversely, when the gas pressure decreases, the rotation amplitude of the arc plate 3031 decreases, and the rotation angle of the mounting sleeve 3032 and the connecting column 3034 also decreases. The slide column 3024 adjusts the angle of the fan blade 3027 to maintain a stable exhaust state and avoid poor exhaust effect due to changes in gas pressure and flow rate.

[0077] Finally, it should be noted that the above-described embodiments are merely specific implementations of this disclosure, used to illustrate the technical solutions of this disclosure, and not to limit it. The protection scope of this disclosure is not limited thereto. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the scope of the technology disclosed in this disclosure. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure, and should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the protection scope of the claims.

Claims

1. A fluid distribution device for a falling film evaporator, comprising an evaporator body (100), a fixing frame (101), and a connecting pipe (102), wherein the fixing frame (101) is fixedly installed at the lower end of the evaporator body (100), and the connecting pipe (102) is fixedly installed at the outlet end of the evaporator body (100), characterized in that: It also includes a valve control assembly (200) and an acceleration guiding mechanism (300), wherein the connecting pipe (102), the valve control assembly (200) and the acceleration guiding mechanism (300) are interconnected, and the valve control assembly (200) is located between the connecting pipe (102) and the acceleration guiding mechanism (300); The valve control assembly (200) includes a valve assembly installed at the end of the connecting pipe (102) away from the evaporator body (100) and a control assembly disposed within the valve assembly. The valve assembly shuts off or allows steam gas to flow according to a pressure threshold, and the control assembly is used to control the preset pressure threshold in the valve assembly. The acceleration and flow guiding mechanism (300) includes a driven component (303) and an exhaust component (302) located at the end of the valve control assembly (200) away from the connecting pipe (102). The exhaust component (302) includes a fan blade (3027). The exhaust component (302) extracts the gas passing through the valve assembly by rotating the fan blade (3027). The driven component (303) adjusts the cross-sectional angle between the fan blade (3027) and the airflow in the exhaust component (302) according to the pressure of the gas discharged from the valve assembly.

2. The fluid distribution device for a falling film evaporator according to claim 1, characterized in that: The valve assembly includes a valve body (202), with an air inlet channel (201) and an air outlet channel (203) at both ends of the valve body (202). A baffle plate (204) is provided inside the cavity of the valve body (202), and a through hole is provided on the baffle plate (204). A valve seat (207) is also threaded inside the cavity of the valve body (202), and a valve stem (2052) is slidably mounted on the valve seat (207). 2) The lower end of the valve is threadedly fixed with a valve disc (205). The valve disc (205) is normally tightly fitted to the through hole on the baffle plate (204). The outer wall of the valve disc (205) is fitted with a one-way diaphragm (2051). The one-way diaphragm (2051) is flexibly connected to the baffle plate (204). The upper end of the valve stem (2052) is fixed with a push pin (2053). The push pin (2053) contains a magnet (206).

3. The fluid distribution device for a falling film evaporator according to claim 2, characterized in that: The valve seat (207) divides the inner cavity of the valve body (202) into upper and lower cavities. When the baffle plate (204) cooperates with the valve disc (205) and the one-way diaphragm (2051), it is used to divide the lower cavity into an air inlet cavity and an air outlet cavity.

4. The fluid distribution device for a falling film evaporator according to claim 3, characterized in that: The control component includes a mounting base (2021) disposed in the upper cavity of the valve body (202), the mounting base (2021) having a through groove for the passage of the ejector pin (2053), and a plurality of magnets (2022) slidably disposed on the mounting base (2021). The valve body (202) has a fixed seat (2024) on its top inner wall. A sliding sleeve (2025) is slidably provided in the fixed seat (2024). Multiple sliding grooves are provided on the outer wall of the fixed seat (2024). Multiple sliding rods (2023) are hinged on the outer wall of the sliding sleeve (2025). The magnet (2022), the sliding rod (2023) and the sliding groove are corresponding one-to-one. The other end of the sliding rod (2023) passes through the sliding groove and is hinged on the magnet (2022). A rotating core (2026) is rotatably provided on the top of the valve body (202). The lower end of the rotating core (2026) passes through the top of the valve body (202) and is threaded to the sliding sleeve (2025).

5. The fluid distribution device for a falling film evaporator according to claim 4, characterized in that: The magnetic pole direction of each of the first magnets (2022) is: N at the top and S at the bottom; the magnetic pole direction of the second magnet (206) is: N at the top and S at the bottom.

6. The fluid distribution device for a falling film evaporator according to claim 5, characterized in that: The driven component (303) includes a connecting cylinder (301) disposed on one side of the valve control component (200) and connected to the air outlet channel (203). A plurality of arc-shaped plates (3031) are uniformly arranged along the axis inside the connecting cylinder (301) and fit against the inner wall of the connecting cylinder (301). The driven component (303) further includes a mounting sleeve (3032). The inner walls of both ends of the mounting sleeve (3032) are fixedly provided with spherical bodies (3028). The inner walls of the two spherical bodies (3028) are fixedly provided with connecting columns (3034). One end of the connecting column (3034) is fixedly provided with a wind baffle plate (3033). Multiple fixing plates (3035) are evenly provided along the axis on the outer wall of the mounting sleeve (3032). Each fixing plate (3035) is hinged with a connecting part. The other end of the connecting part is hinged to the arc plate (3031). The arc plate (3031) corresponds one-to-one with the fixing plate (3035).

7. The fluid distribution device for a falling film evaporator according to claim 6, characterized in that: The connecting part includes a set of connecting rods 1 (3036) hinged to the fixed plate (3035). There are two sets of connecting rods 1 (3036). Each connecting rod 1 (3036) has a slider on both sides. Each connecting rod 1 (3036) has a set of connecting rods 2 (3037) on both sides. Each connecting rod 2 (3037) has a sliding groove. The connecting rod 1 (3036) is slidably connected to the connecting rod 2 (3037) through the cooperation of the slider and the sliding groove. The diameter of the end of each slider that protrudes from the sliding groove is greater than the width of the sliding groove.

8. The fluid distribution device for a falling film evaporator according to claim 7, characterized in that: A spring (3038) is fixedly installed in the groove of the second connecting rod (3037). The spring (3038) is used to assist the first connecting rod (3036) and the second connecting rod (3037) in resetting after sliding.

9. A fluid distribution device for a falling film evaporator according to claim 8, characterized in that: The exhaust assembly (302) includes an installation sleeve (3021) fixedly disposed on one end of the mounting sleeve (3032) through the connecting column (3034). An installation body (3022) is fixedly disposed on the installation sleeve (3021) by bolts. A hinge rod (3023) is hinged to each of the four protruding ends of the installation body (3022). The other end of the connecting column (3034) is provided with a sliding column (3024), and a bearing seat (3025) is fixed on the sliding column (3024) by bolts. Multiple rotating seats (3026) are evenly rotated on the bearing seat (3025). The other end of each hinge rod (3023) is hinged to the outer wall of each rotating seat (3026). The rotating seat (3026) corresponds one-to-one with the hinge rod (3023). Each rotating seat (3026) is fixedly connected to the fan blade (3027) by bolts.

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