Large-scale plate-type screen changer with flow guiding effect

Abstract

The utility model provides a large -scale plate formula screen changing device with the effect of guiding flow relates to plastic processing technical field, include: the shell is inside and is provided with the shunt cavity, the shunt cavity is cylindrical, the shell is along the vertical direction of shunt cavity center line and is provided with the slide, the slide is located the center place of shell, the slide penetrates the both side surfaces of shell, the slide is set on the slide, the surface of slide is provided with two groups of perforated plate, the slide will shunt cavity divide into inflow channel and outflow channel, the flow guide device is set in both sides of slide, and is pasted with shunt cavity, the flow guide device is correspondingly provided with flow guide subassembly, the utility model discloses the shunt cavity is formed inflow channel, outflow channel through the slide partition, combines the perforated plate, flow guide device and subassembly, realizes efficient flexible shunt, even flow guide, and compact structure, and is widely used.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing technology, and more specifically, to a large plate-type screen changing device with a flow guiding function. Background Technology

[0002] In the production, processing, and recycling of polymer materials, filtration of the molten material is often necessary. For example, in the plastics processing industry, impurities in the material need to be removed to ensure the quality of plastic products.

[0003] With the continuous expansion of industrial production scale, higher requirements are placed on the processing capacity and reliability of filtration devices. Large-scale plate screen changers, due to their large filtration area and high filtration accuracy, have gradually gained widespread application. However, ordinary large-scale plate screen changers have some shortcomings in material flow, such as uneven material flow within the filter chamber, which can easily cause localized blockages, affecting filtration efficiency and the device's service life. Furthermore, during screen changing, the material pressure fluctuates significantly, which may adversely affect the production process.

[0004] Therefore, there is an urgent need for a large plate-type screen changer with a flow guiding function to replace the existing large screen changers in order to solve the problem of how to improve filtration efficiency. Utility Model Content

[0005] In view of this, this utility model proposes a large plate-type screen changing device with a flow guiding function, aiming to solve the problem of how to improve filtration efficiency.

[0006] This utility model provides a large-scale plate-type screen changing device with a flow guiding function, comprising:

[0007] The housing has a flow-dividing cavity inside, and a slide is provided in the housing along a direction perpendicular to the horizontal center line of the flow-dividing cavity. The slide is located at the center of the housing and passes through both sides of the housing.

[0008] A slide plate is mounted on a slide rail. The surface of the slide plate is provided with two sets of perforated plates. The slide plate divides the flow distribution cavity into an inlet channel and an outlet channel.

[0009] A flow guiding device is disposed on both sides of the slide plate and fits against the inner wall of the flow diversion cavity. The flow guiding device is correspondingly provided with a flow guiding component.

[0010] Furthermore, the housing includes an inlet plate, an outlet plate, and a gasket. The inlet plate and the outlet plate are respectively arranged for the inlet channel and the outlet channel. The gasket is arranged between the inlet plate and the outlet plate. The surface of the inlet plate away from the gasket has a feed port, and the surface of the outlet plate away from the gasket has a discharge port. The inlet plate, the outlet plate, and the gasket are bolted together.

[0011] Furthermore, the flow guiding device includes an inlet flow divider and an outlet flow divider. The inlet flow divider is disposed between the slide plate and the inlet plate. A first inlet flow divider rib is provided on the inner side of the inlet flow divider near the inlet plate. A second inlet flow divider rib is provided at the center of the radius of the first inlet flow divider rib. The second inlet flow divider rib is radially distributed with the center of the flow divider cavity as the center. An inlet flow guiding torpedo head is obliquely connected to the end of the second inlet flow divider rib away from the inlet flow divider.

[0012] The outlet diversion frame is disposed between the slide plate and the outlet plate. The inner side of the outlet diversion frame near the outlet plate is provided with a first outlet diversion rib. A second outlet diversion rib is provided at the center of the radius of the first outlet diversion rib. The second outlet diversion rib is radially distributed with the center of the diversion cavity as the center. The end of the second outlet diversion rib away from the outlet diversion frame is inclinedly connected to the outlet guide torpedo head.

[0013] Furthermore, an inlet sealing ring is fitted on the outer side of the inlet diverter, and a plurality of placement grooves are provided at one end of the inlet sealing ring near the inlet plate. An inlet pre-tightening spring is provided inside the placement groove, and the inlet sealing ring is slidably connected to the slide plate.

[0014] An outlet sealing ring is fitted on the outer side of the outlet diverter, and the outlet sealing ring is slidably connected to the slide plate.

[0015] Furthermore, the slide plate is provided with a connecting end plate at one end and a limit block at the other end. The slide plate is provided with a temperature measuring hole at the end near the limit block, and a receiving cavity is provided inside the connecting end plate.

[0016] Furthermore, a double-headed bolt support is provided at one end of the inlet plate and the outlet plate near the connecting end plate, and a fixing plate is provided at the other end of the double-headed bolt support away from the inlet plate and the outlet plate. A through hole is opened on the surface of the fixing plate, and a hydraulic cylinder is provided on the lower surface of the fixing plate. The hydraulic cylinder is bolted to the fixing plate.

[0017] Furthermore, the cylinder is provided with a piston rod that passes through a through hole, and a piston ball head is provided at the end of the piston rod that passes through the through hole. The piston ball head is located inside the receiving cavity.

[0018] Furthermore, the connecting end plate includes an upper end plate and a lower end plate, the upper end plate is fixedly connected to the slide plate, and the upper end plate and the lower end plate are bolted together.

[0019] Furthermore, a filter screen is provided on the surface of the perforated plate near the inlet channel, and the perforated plate and the filter screen are fixed together by a screen pressing component.

[0020] Furthermore, heat transfer channels are respectively provided inside the slide plate, the inlet plate, and the outlet plate.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] 1. The flow guiding device fits snugly against the inner wall of the flow distribution chamber, which can effectively prevent fluid leakage at the gap between the slide plate and the inner wall of the flow distribution chamber, ensuring that the fluid flows along the predetermined inlet and outlet channels, improving the sealing and reliability of the device, and reducing fluid loss and potential safety hazards.

[0023] 2. The flow guiding device and its corresponding flow guiding components can further guide and optimize the flow of fluid, allowing it to flow more smoothly in the inlet and outlet channels. It also acts as a reinforcing element to prevent deformation of the sealing ring. This helps improve the energy efficiency of the entire system, reduces operating costs, and the flow guiding device also plays a role in heat conduction, ensuring more thorough and uniform heating of the material.

[0024] 3. The two sets of perforated plates on the slide plate surface help to distribute the fluid more evenly in the inlet or outlet channels, reducing fluid deviation and localized flow velocity unevenness. This can improve work efficiency and effectiveness for applications with high requirements for fluid uniformity, such as fluid mixing and heat exchange processes. Attached Figure Description

[0025] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0026] Figure 1 A schematic diagram of the structure of the large plate-type screen changing device provided in the embodiment of this utility model;

[0027] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0028] Figure 3 A schematic diagram of the structure of the inlet diverter provided in an embodiment of this utility model;

[0029] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0030] Figure 5 A schematic diagram of the structure of the outlet diversion frame provided in this embodiment of the utility model;

[0031] Figure 6 for Figure 5 A cross-sectional view along the AA direction;

[0032] Figure 7 for Figure 1 Cross-sectional view along the BB direction;

[0033] Figure 8 A schematic diagram of the structure of the skateboard provided in an embodiment of this utility model.

[0034] In the diagram: 100-Shell; 110-Inlet plate; 120-Outlet plate; 130-Gap strip; 140-Heat medium flow channel; 200-Slide plate; 210-Perforated plate; 211-Filter screen; 212-Screen pressing component; 220-Connecting end plate; 230-Limiting block; 240-Slide plate temperature measuring hole; 300-Flow guiding device; 310-Inlet flow divider; 311-Second inlet flow divider rib; 312-Inlet flow guide torpedo head; 313-Inlet channel; 314 - Feed inlet; 315 - First inlet diverter rib; 320 - Outlet diverter frame; 321 - Second outlet diverter rib; 322 - Outlet guide torpedo head; 323 - Outlet channel; 324 - Discharge port; 325 - First outlet diverter rib; 330 - Inlet sealing ring; 331 - Inlet preload spring; 332 - Placement groove; 340 - Outlet sealing ring; 400 - Hydraulic cylinder; 410 - Piston ball head; 500 - Fixing plate; 510 - Double-ended bolt support. Detailed Implementation

[0035] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0036] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] See Figure 1 and Figure 2 As shown, this embodiment provides a large plate-type screen changing device with a flow guiding function, including: a housing 100, a sliding plate 200 and a flow guiding device 300.

[0040] Specifically, the housing 100 has a flow-dividing cavity inside, and a slide is provided in the housing 100 along a direction perpendicular to the horizontal center line of the flow-dividing cavity. The slide is located at the center of the housing 100 and passes through both sides of the housing 100.

[0041] The slide plate 200 is set on the slide rail. The surface of the slide plate 200 is provided with two sets of perforated plates 210. The slide plate 200 divides the flow distribution cavity into an inlet channel 313 and an outlet channel 323.

[0042] The flow guiding device 300 is disposed on both sides of the slide plate 200 and is attached to the inner wall of the flow diversion cavity. The flow guiding device 300 is provided with a corresponding flow guiding component.

[0043] Specifically, the housing 100 is cast from a high-strength alloy material, possessing excellent pressure resistance and wear resistance, and capable of withstanding high fluid pressure and long-term wear. Its internal flow distribution chamber is a regular cylindrical shape.

[0044] Specifically, the slide has a rectangular cross-section, and its width is precisely matched with the 200mm thickness of the slide plate, forming a sliding fit with minimal gaps.

[0045] Specifically, the two sets of porous plates 210 on the surface of the slide plate 200 adopt a honeycomb or mesh structure, and the pore size and distribution density are optimized to achieve uniform fluid distribution and filtration function.

[0046] Understandably, when fluid enters the distribution chamber of the housing 100 through the pipe, the position of the slide plate 200 in the slide rail determines the cross-sectional area of ​​the inlet channel 313 and the outlet channel 323, thereby controlling the fluid flow distribution. The slide plate 200 can slide within the slide rail in a direction perpendicular to the horizontal centerline of the distribution chamber, according to actual operating conditions. When the slide plate 200 slides to one side, the cross-sectional area of ​​the inlet channel 313 increases, and the cross-sectional area of ​​the outlet channel 323 decreases, allowing more fluid to pass through the inlet channel 313; conversely, when the slide plate 200 slides to the other side, the cross-sectional area of ​​the outlet channel 323 increases, and the cross-sectional area of ​​the inlet channel 313 decreases, allowing more fluid to flow out from the outlet channel 323. When the fluid passes through the perforated plate 210, the perforated plate 210 can intercept larger impurity particles in the fluid, preventing them from entering subsequent flow channels and ensuring the normal operation of the system. The flow guiding device 300 fits tightly against the inner wall of the distribution chamber, guiding the fluid flow on both sides of the slide plate 200. As the fluid flows from the inlet channel 313 to the outlet channel 323, the flow guiding components on the flow guiding device 300 rectify and accelerate the fluid.

[0047] See Figure 2 As shown, in some embodiments of this application, the housing 100 includes an inlet plate 110, an outlet plate 120, and a gasket 130. The inlet plate 110 and the outlet plate 120 are respectively provided for the inlet channel 313 and the outlet channel 323. The gasket 130 is disposed between the inlet plate 110 and the outlet plate 120. The surface of the inlet plate 110 away from the gasket 130 is provided with a feed port 314, and the surface of the outlet plate 120 away from the gasket 130 is provided with a discharge port 324. The inlet plate 110, the outlet plate 120, and the gasket 130 are bolted together.

[0048] Specifically, the inlet 314 is circular with rounded edges to prevent severe turbulence when the fluid enters. The size of the inlet 314 is precisely designed according to the system flow requirements and is connected to the external conveying pipeline via flange or thread to ensure a tight connection and prevent fluid leakage. The outlet plate 120 is designed to correspond to the inlet plate 110.

[0049] Specifically, the gasket 130 is made of rubber with high elasticity and good weather resistance. This material can deform moderately under the pressure of bolt tightening, filling the tiny gaps between the inlet plate 110, the outlet plate 120 and itself, thereby achieving an excellent sealing effect and preventing fluid leakage from the side of the housing 100.

[0050] Understandably, the inlet plate 110, outlet plate 120, and gasket 130 are bolted together to form a complete housing 100 structure. During installation, the gasket 130 is first inserted into the groove of the inlet plate 110, then the outlet plate 120 is aligned with the inlet plate 110, ensuring the bolt holes of all three correspond one-to-one. Bolts are then passed through the bolt holes sequentially and tightened. When tightening the bolts, torque should be applied gradually in a diagonal sequence to ensure even force distribution and prevent uneven force distribution that could lead to seal failure or component deformation. This connection method not only gives the housing 100 good structural strength, enabling it to withstand the pressure of the internal fluid, but also ensures the sealing of the inlet channel 313 and the outlet channel 323, allowing the fluid to flow stably within the distribution chamber according to the designed path.

[0051] See Figure 2 As shown, in some embodiments of this application, the flow guiding device 300 includes an inlet diverter 310 and an outlet diverter 320. The inlet diverter 310 is disposed between the slide plate 200 and the inlet plate 110. A first inlet diverter rib 315 is provided on the inner side of the inlet diverter 310 near the inlet plate 110. A second inlet diverter rib 311 is provided at the center of the radius of the first inlet diverter rib 315. The second inlet diverter rib 311 is radially distributed with the center of the diverter cavity as the center. An inlet guide torpedo head 312 is obliquely connected to the end of the second inlet diverter rib 311 away from the inlet diverter 310.

[0052] An outlet diversion frame 320 is disposed between the slide plate 200 and the outlet plate 120. A first outlet diversion rib 325 is provided on the inner side of the outlet diversion frame 320 near the outlet plate 120. A second outlet diversion rib 321 is provided at the center of the radius of the first outlet diversion rib 325. The second outlet diversion rib 321 is radially distributed with the center of the diversion cavity as the center. An outlet guide torpedo head 322 is obliquely connected to the end of the second outlet diversion rib 321 away from the outlet diversion frame 320.

[0053] Specifically, a second inlet diverter rib 311 is positioned at the center of the radius of the first inlet diverter rib 315, and is radially distributed around the center of the diverting cavity, much like the spokes of a wheel. This radial layout further disperses the fluid guided from the first inlet diverter rib 315 towards the center of the diverting cavity, achieving uniform fluid distribution. The number and angle of the second inlet diverter ribs 311 are precisely designed according to the size of the diverting cavity and the fluid flow rate, ensuring that each stream of fluid enters the diverting cavity at the appropriate speed and direction.

[0054] Specifically, the second inlet diverter rib 311, located at the end furthest from the inlet diverter frame 310, is inclined to connect to the inlet guide torpedo head 312, which has a streamlined shape resembling a torpedo. This shape reduces fluid resistance when entering the diverter cavity, preventing the generation of eddies and turbulence. The inclination angle of the inlet guide torpedo head 312 is calculated using fluid dynamics to guide the fluid into the diverter cavity at the optimal angle, making the fluid flow within the cavity smoother and laying a good foundation for the subsequent distribution and control of the fluid by the slide plate 200.

[0055] Specifically, the second outlet diversion ribs 321, located at the center of the radius of the first outlet diversion rib 325, are also radially distributed with the center of the diversion cavity as the center. These second outlet diversion ribs 321 further concentrate the fluid collected from the first outlet diversion rib 325, directing it towards the discharge port 324. The design of the second outlet diversion ribs 321 ensures that the fluid is adequately sorted and guided before flowing out of the diversion cavity, avoiding fluid turbulence.

[0056] Specifically, the second outlet diverter rib 321, at its end furthest from the outlet diverter frame 320, is inclinedly connected to the outlet guide torpedo head 322, which also adopts a streamlined design. Its function is to guide the fluid from the diverter chamber to the outlet port 324 of the outlet plate 120 with minimal resistance and optimal flow velocity. The tilt angle and shape of the outlet guide torpedo head 322 are carefully designed to maintain a stable flow state during fluid passage, reduce energy loss, and ensure that the fluid can be efficiently and smoothly discharged from the casing 100 and enter subsequent conveying pipelines or equipment.

[0057] Understandably, the inlet diverter 310 and outlet diverter 320, through their unique structural designs, work together to precisely control and guide the flow direction, velocity, and flow rate distribution of the fluid during its entry into and exit from the diverter chamber. They not only reduce energy loss during fluid flow and improve the overall system efficiency, but also ensure stable fluid flow within the diverter chamber, preventing unnecessary impact and wear on components such as the slide plate 200 and housing 100 due to fluid turbulence, thereby extending the service life of the entire device. Furthermore, the flow channel design incorporates a diverting rib-equipped guide device 300 to divert the material, while also reinforcing the screen changer housing 100 to prevent high-pressure deformation. The guide device 300 also plays a role in heat conduction, ensuring more thorough and uniform heating of the material.

[0058] See Figures 3-6 As shown, in some embodiments of this application, an inlet sealing ring 330 is sleeved on the outer side of the inlet diverter 310. The inlet sealing ring 330 has several placement grooves 332 at one end near the inlet plate 110. An inlet pre-tightening spring 331 is provided inside the placement groove 332. The inlet sealing ring 330 is slidably connected to the slide plate 200.

[0059] An outlet sealing ring 340 is fitted on the outer side of the outlet diverter 320, and the outlet sealing ring 340 is slidably connected to the slide plate 200.

[0060] Specifically, several placement slots 332, located near one end of the inlet plate 110, are evenly distributed in a circular array. The depth and width of these placement slots 332 are perfectly matched to the inlet preload springs 331. The inlet preload springs 331 are made of high-strength stainless steel, possessing high elasticity and fatigue resistance, maintaining stable elastic deformation even during long-term, high-frequency compression and rebound processes. After the springs are installed in the placement slots 332, one end abuts against the inlet plate 110, while the other end pushes the inlet sealing ring 330 towards the slide plate 200, thereby generating preload force.

[0061] Understandably, the inlet sealing ring 330, the outlet sealing ring 340, together with the inlet preload spring 331 and the sliding connection design with the slide plate 200, play a crucial sealing role in the entire device. They not only effectively prevent fluid leakage and ensure the stability and accuracy of fluid flow within the diversion chamber, but also provide reliable sealing protection for the flexible adjustment of the slide plate 200, enabling the device to operate efficiently under different working conditions.

[0062] Understandably, the inlet and outlet diversion rack 320 is equipped with a first diversion rib to divert the material more fully, and also to strengthen it and prevent the sealing ring from deforming. The diversion rib also plays a certain role in mixing, making the material more fully mixed.

[0063] See Figure 7 As shown, in some embodiments of this application, a connecting end plate 220 is provided at one end of the slide plate 200, and a limiting block 230 is provided at the other end. A slide plate temperature measuring hole 240 is provided inside the end of the slide plate 200 near the limiting block 230, and a receiving cavity is provided inside the connecting end plate 220.

[0064] Specifically, the temperature sensing port 240 on the slide plate is an important structure used to monitor the temperature of the slide plate 200 and the surrounding fluid. The temperature sensing port has a diameter of 5 mm. A high-precision temperature sensor is inserted into the temperature sensing port 240, and the sensor's probe can sense the temperature changes of the slide plate 200 and the temperature of the fluid flowing through the inlet channel 313 and the outlet channel 323 in real time. By monitoring this temperature data, the operating status of the device can be understood in a timely manner.

[0065] Understandably, the connecting end plate 220, the limiting block 230, and the temperature measuring hole 240 on the slide plate 200 work together to ensure the functionality and safe operation of the slide plate 200 from different aspects. The connecting end plate 220 provides space for the slide plate 200 to connect with external equipment and install internal components; the limiting block 230 ensures that the sliding stroke of the slide plate 200 within the slide rail is controllable; and the temperature measuring hole 240 provides an important means of monitoring the operating status of the device. The three work together to enable the slide plate 200 to play its core function of precisely adjusting the cross-sectional area of ​​the fluid channel and stably distributing the fluid flow rate in the entire device.

[0066] See Figure 7 As shown in some embodiments of this application, a double-headed bolt support 510 is provided at one end of the inlet plate 110 and the outlet plate 120 near the connecting end plate 220, and a fixing plate 500 is provided at the other end of the double-headed bolt support 510 away from the inlet plate 110 and the outlet plate 120. A through hole is provided on the surface of the fixing plate 500, and a hydraulic cylinder 400 is provided on the lower surface of the fixing plate 500. The hydraulic cylinder 400 is bolted to the fixing plate 500.

[0067] Understandably, the hydraulic cylinder 400, located on the lower surface of the fixed plate 500, is bolted to the fixed plate 500, providing a stable and controllable power source for the sliding plate 200. The hydraulic drive of the cylinder 400 features fast response, large thrust, and high adjustment precision. By controlling the extension and retraction stroke of the cylinder 400, the position of the sliding plate 200 within the track can be precisely adjusted.

[0068] See Figure 7 As shown, in some embodiments of this application, the cylinder 400 is provided with a piston rod, the piston rod passes through a through hole, and the end of the piston rod passing through the through hole is provided with a piston ball head 410, which is disposed inside the receiving cavity.

[0069] Understandably, the piston rod of the hydraulic cylinder 400 passes through the through hole on the surface of the fixed plate 500 and is directly connected to the receiving cavity inside the connecting end plate 220 of the slide plate 200. This connection method allows the power generated by the hydraulic cylinder 400 to be efficiently and directly transmitted to the slide plate 200. The piston ball head 410 is located inside the receiving cavity and cooperates with the piston rod. Compared with the traditional rigid connection, the ball head structure can automatically adjust the angle to a certain extent to compensate for the slight offset caused by installation errors or the sliding of the slide plate 200. This ensures that the linear motion of the piston rod can be stably and accurately converted into the sliding of the slide plate 200 in the slideway, thereby achieving precise control of the cross-sectional area of ​​the inlet channel 313 and the outlet channel 323 and ensuring the accuracy of fluid flow distribution.

[0070] In some embodiments of this application, the connecting end plate 220 includes an upper end plate and a lower end plate, the upper end plate is fixedly connected to the slide plate 200, and the upper end plate and the lower end plate are fastened together by bolts.

[0071] Understandably, the bolted connection between the upper and lower end plates, after being connected to the piston ball head 410, makes the overall structure more stable. The piston ball head 410, within its accommodating cavity, can evenly distribute the force of the piston rod onto the connecting end plate 220, which is then transmitted from the upper end plate to the sliding plate 200. This avoids loosening or damage to the connection due to force concentration, thereby improving the stability and reliability of the entire system.

[0072] See Figure 7 As shown, in some embodiments of this application, a filter screen 211 is provided on the surface of the perforated plate 210 near the inlet channel 313, and the perforated plate 210 and the filter screen 211 are fixed together by a screen pressing member 212.

[0073] Specifically, filter screen 211 is a high-performance polymer filter screen 211 with a carefully designed mesh size that can effectively intercept impurity particles larger than the mesh size in the fluid, such as solid debris and fibers. As the fluid flows from the inlet channel 313 through the perforated plate 210 into the outlet channel 323, filter screen 211 plays a crucial role in preliminary filtration, preventing these impurities from entering the subsequent outlet channel 323 and related equipment. This avoids malfunctions caused by impurities clogging pipes and wearing down equipment components, ensuring fluid cleanliness and normal equipment operation. Simultaneously, the material of filter screen 211 has excellent corrosion resistance and wear resistance, enabling it to withstand the scouring of fluids of different properties and extending its service life.

[0074] Understandably, the combined structure of the perforated plate 210, filter screen 211, and screen pressing component 212 plays an important role in fluid filtration and equipment protection. Through careful design and reasonable installation, it achieves the goals of efficient filtration and stable operation.

[0075] See Figure 7 and Figure 8 As shown, in some embodiments of this application, heat medium flow channels 140 are respectively provided inside the slide plate 200, the inlet plate 110 and the outlet plate 120.

[0076] Understandably, a suitable temperature environment can reduce the probability of impurity deposition in the fluid. When the component temperature is too low, some impurities in the fluid may precipitate and adhere to the component surface, potentially causing channel blockage over time. The heat transfer medium channel 140 regulates the component temperature, maintaining good fluid flow, and its design integrates the slide plate 200, inlet plate 110, and outlet plate 120 into the heat exchange process. As the heat transfer medium circulates in the channel, it can effectively exchange heat with the surrounding fluid, improving the overall heat exchange efficiency of the equipment. This efficient heat exchange allows the equipment to reach the required operating temperature more quickly, reducing energy consumption and improving energy utilization efficiency.

[0077] Compared with the prior art, the beneficial effects of this utility model are as follows: the flow guiding device 300 fits snugly against the inner wall of the flow distribution chamber, effectively preventing fluid leakage at the gap between the slide plate 200 and the inner wall of the flow distribution chamber, ensuring that the fluid flows along the predetermined inlet channel 313 and outlet channel 323, improving the sealing performance and reliability of the device, and reducing fluid loss and potential safety hazards. The flow guiding component corresponding to the flow guiding device 300 can further guide and optimize the fluid flow, allowing the fluid to flow more smoothly in the inlet channel 313 and outlet channel 323, while also playing a reinforcing role to prevent deformation of the sealing ring. This helps to improve the energy utilization efficiency of the entire system and reduce operating costs. The flow guiding device 300 also plays a role in heat conduction, making the material heating more thorough and uniform. The two sets of perforated plates 210 provided on the surface of the slide plate 200 help to distribute the passing fluid more evenly in the inlet channel 313 or outlet channel 323, reducing fluid deviation and local flow velocity unevenness. This can improve work efficiency and effectiveness for applications that require high fluid uniformity, such as fluid mixing and heat exchange processes.

[0078] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large plate-type screen changing device with a flow guiding function, characterized in that, include: The housing has a cylindrical flow-dividing cavity inside. The housing is composed of an inlet plate, an outlet plate, and a gasket connected by bolts. The housing has a slide rail along a direction perpendicular to the horizontal center line of the flow-dividing cavity. The slide rail is located at the center of the housing and runs through both sides of the housing. A slide plate is mounted on a slide rail. The surface of the slide plate is provided with two sets of perforated plates. The slide plate divides the flow distribution cavity into an inlet channel and an outlet channel. A flow guiding device is disposed on both sides of the slide plate and fits against the inner wall of the flow diversion cavity; The flow guiding device includes an inlet flow divider and an outlet flow divider. The inlet flow divider is disposed between the slide plate and the inlet plate. A first inlet flow divider rib is provided on the inner side of the inlet flow divider near the inlet plate. A second inlet flow divider rib is provided at the center of the radius of the first inlet flow divider rib. The second inlet flow divider rib is radially distributed with the center of the flow divider cavity as the center. An inlet flow guiding torpedo head is obliquely connected to the end of the second inlet flow divider rib away from the inlet flow divider. The outlet diversion frame is disposed between the slide plate and the outlet plate. The inner side of the outlet diversion frame near the outlet plate is provided with a first outlet diversion rib. A second outlet diversion rib is provided at the center of the radius of the first outlet diversion rib. The second outlet diversion rib is radially distributed with the center of the diversion cavity as the center. The end of the second outlet diversion rib away from the outlet diversion frame is inclinedly connected to the outlet guide torpedo head.

2. The large-scale plate-type screen changing device according to claim 1, characterized in that, The housing includes an inlet plate, an outlet plate, and a gasket. The inlet plate and the outlet plate are respectively arranged for the inlet channel and the outlet channel. The gasket is arranged between the inlet plate and the outlet plate. The surface of the inlet plate away from the gasket has a feed port, and the surface of the outlet plate away from the gasket has a discharge port. The inlet plate, the outlet plate, and the gasket are bolted together.

3. The large-scale plate-type screen changing device according to claim 2, characterized in that, An inlet sealing ring is fitted on the outer side of the inlet diverter. Several placement grooves are opened at the end of the inlet sealing ring near the inlet plate. An inlet pre-tightening spring is installed inside the placement groove. The inlet sealing ring is slidably connected to the slide plate. An outlet sealing ring is fitted on the outer side of the outlet diverter, and the outlet sealing ring is slidably connected to the slide plate.

4. The large-scale plate-type screen changing device according to claim 1, characterized in that, The slide plate has a connecting end plate at one end and a limit block at the other end. The slide plate has a temperature measuring hole inside the end near the limit block, and the connecting end plate has a receiving cavity inside.

5. The large-scale plate-type screen changing device according to claim 2, characterized in that, The inlet plate and outlet plate are provided with a double-headed bolt support at one end near the connecting end plate, and a fixing plate is provided at the other end of the double-headed bolt support away from the inlet plate and outlet plate. The surface of the fixing plate has a through hole, and a hydraulic cylinder is provided on the lower surface of the fixing plate. The hydraulic cylinder is bolted to the fixing plate.

6. The large-scale plate-type screen changing device according to claim 5, characterized in that, The cylinder is provided with a piston rod that passes through a through hole. A piston ball head is provided at the end of the piston rod that passes through the through hole, and the piston ball head is located inside the receiving cavity.

7. The large-scale plate-type screen changing device according to claim 4, characterized in that, The connecting end plate includes a split structure consisting of an upper end plate and a lower end plate. The upper end plate is fixedly connected to the sliding plate, and the upper end plate and the lower end plate are fastened together with bolts.

8. The large-scale plate-type screen changing device according to claim 1, characterized in that, A filter screen is provided on the surface of the perforated plate near the inlet channel, and the perforated plate and the filter screen are fixed together by a screen pressing component.

9. The large scale plate-type screen changer according to claim 2, characterized in that, The heat medium flow channels are respectively arranged in the sliding plate, the inlet plate and the outlet plate.

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