Material circulating pump inlet filter device

Abstract

The application provides a material circulating pump inlet filtering device, a filtering box inlet end is connected with a feeding pipe, a filtering box outlet end is connected with a circulating pump feeding end, two insertion holes are arranged on the filtering box side wall, two installation grooves are vertically arranged on the filtering box inner wall, the installation grooves are communicated with the corresponding insertion holes, the filtering screen can pass through the insertion hole and enter the installation groove, the filtering screen is arranged vertically to the material flow direction, a linkage mechanism is arranged in the filtering box, the linkage mechanism input end and output end are reversible, and the linkage mechanism input end and output end are connected with one installation groove respectively. When the working filtering screen intercepts impurities to a certain amount and needs to be cleaned or replaced, the application does not need to stop the machine and disassemble the whole filtering device, only needs to load a new filtering screen into the empty installation groove, during the loading process, the linkage mechanism will be linked due to the input end force, and the output end will drive the original dirty filtering screen to pop out from the corresponding insertion hole, so that the filtering screen is quickly replaced.

Description

Technical Field

[0001] This application belongs to the field of filtration equipment technology, and more specifically, relates to a material circulation pump inlet filtration device. Background Technology

[0002] In industrial material handling systems, material circulation pumps, as core power equipment, are widely used in chemical, pharmaceutical, and food processing industries. Their stable operation directly affects production efficiency and product quality. During storage and transfer, materials are prone to contamination with impurities and particulate pollutants. If these impurities directly enter the circulation pump, they can cause wear and blockage of critical components such as the impeller and bearings inside the pump body. Therefore, a filter device is usually installed at the inlet of the circulation pump to intercept impurities and ensure the normal operation of the pump.

[0003] When the impurities trapped by the filter screen in the existing circulating pump inlet filter device reach a certain amount during use, the machine needs to be stopped to disassemble the filter device to replace or clean the filter screen. This operation is not only cumbersome, but also causes the production process to be interrupted, which seriously affects the continuity of production. Especially for production systems that need to run 24 hours a day, the economic losses caused by downtime to replace the filter screen are more significant. Utility Model Content

[0004] The purpose of this application is to provide a material circulation pump inlet filter device to facilitate filter screen replacement without shutting down the pump, thereby improving production continuity.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A material circulation pump inlet filtration device is provided, comprising a filter box, two mounting slots, a filter screen, and a linkage mechanism. The inlet end of the filter box is connected to a feed pipe, and the outlet end of the filter box is connected to the feed end of the circulation pump. Two insertion holes are provided on the side wall of the filter box. The two mounting slots are vertically arranged on the inner wall of the filter box, with each mounting slot corresponding to one of the insertion holes, and the mounting slots communicating with the corresponding insertion holes. The filter screen can pass through the insertion holes into the mounting slots, and the filter screen is arranged perpendicular to the flow direction of the material. The linkage mechanism is located inside the filter box, and the input and output ends of the linkage mechanism are reversible. Each input and output end of the linkage mechanism is connected to one of the mounting slots, so that after the filter screen is installed in one of the mounting slots, the filter screen in the other mounting slot is ejected through the corresponding insertion hole.

[0006] In one possible implementation, the inner wall of the filter box is provided with two sets of mounting plates, each set of mounting plates including four pieces, and the four mounting plates of the same set are symmetrically arranged in pairs on opposite inner walls of the filter box to form the mounting groove for inserting the filter screen.

[0007] In one possible implementation, the bottom end of the mounting plate is spaced apart from the inner bottom surface of the filter box.

[0008] In one possible implementation, the linkage mechanism includes a linkage hole, two pistons, and two linkage blocks. The linkage hole includes two vertical holes and a horizontal hole connected to the bottom end of the two vertical holes. The linkage hole is located on the bottom plate of the filter box. The top ends of the two vertical holes communicate with the inner cavity of the filter box, and each vertical hole corresponds to one of the two mounting slots. The projection of the mounting slot on the bottom surface of the filter box at least partially coincides with the projection of the vertical hole on the bottom surface of the filter box. The two pistons are slidably disposed in the two vertical holes, and a force-transmitting medium is filled between the two pistons. The two linkage blocks correspond to the pistons one-to-one. The linkage blocks are disposed on the top of the corresponding pistons, and the linkage blocks can be completely retracted into the vertical holes due to the sliding of the pistons. When one linkage block is completely retracted into the vertical hole, a portion of the other linkage block extends into the filter box.

[0009] In one possible implementation, the vertical hole includes a large-diameter section and a small-diameter section, the small-diameter section is located at the top of the large-diameter section, the diameter of the piston is larger than the diameter of the linkage block, the piston is slidably disposed within the large-diameter section, the linkage block is inserted within the small-diameter section, and the projection of the mounting groove on the bottom surface of the filter box at least partially coincides with the projection of the small-diameter section on the bottom surface of the filter box.

[0010] In one possible implementation, an installation gap is provided between the mounting plate and the top plate of the filter box. Two sealing plates are hinged within the installation gap, and each sealing plate corresponds to a socket. An energy storage device is provided between the sealing plate and the filter box. When the energy storage device is in its natural state, the sealing plate blocks the corresponding socket. When the filter screen is inserted into the mounting groove, the filter screen pushes the sealing plate to flip and causes the energy storage device to store energy.

[0011] In one possible implementation, the sealing plate has rotating shafts at both ends, which are rotatably mounted on the inner wall of the filter box. The energy storage element is a torsion spring, with one end of the torsion spring connected to the sealing plate and the other end of the torsion spring connected to the inner wall of the filter box.

[0012] In one possible implementation, the top of the filter box is provided with a first limiting plate, which is located between the two insertion holes. The top of the filter box is provided with two second limiting plates, which are respectively located on both sides of the first limiting plate. Two baffles are slidably provided on the top of the filter box, and the baffles correspond one-to-one with the second limiting plates. A spring is provided between the baffle and the corresponding second limiting plate. When the spring is in its natural state, the baffle abuts against the first limiting plate and blocks the insertion holes. The baffle can compress the spring under the action of external force to release the blockage of the insertion holes.

[0013] In one possible implementation, the top surface of the filter box is provided with a T-shaped groove, the bottom of the baffle is provided with a slider adapted to the groove, and the slider is inserted into the groove; the top of the baffle is provided with a handle; the bottom surface of the baffle is provided with a sealing ring, the sealing ring is clamped between the baffle and the top surface of the filter box, and when the baffle abuts against the first limiting plate, the sealing ring is arranged around the insertion hole.

[0014] In one possible implementation, the inner cavity between the mounting groove and the inlet end of the filter box is a sludge chamber, the bottom surface of the sludge chamber is funnel-shaped, a drain pipe is provided at the bottom of the sludge chamber, and a drain valve is provided on the drain pipe, which can open or close the drain pipe.

[0015] The beneficial effects of the material circulation pump inlet filter device provided in this application are as follows: Compared with the prior art, this application, by setting two mounting slots, a filter screen that can be inserted into the mounting slot through the insertion hole and arranged perpendicular to the material flow direction, and a linkage mechanism with reversible input and output ends connected to the two mounting slots respectively, allows the filter screen in the other mounting slot to pop out through the corresponding insertion hole after a filter screen is installed in one mounting slot. From the usage logic, when the working filter screen intercepts a certain amount of impurities and needs to be cleaned or replaced, there is no need to stop the machine and disassemble the entire filter device. Simply insert a new filter screen into the empty mounting slot. During the insertion process, the linkage mechanism will be activated by the force on the input end, and its output end will drive the original dirty filter screen to pop out from the corresponding insertion hole, realizing the rapid replacement of the filter screen.

[0016] This design completely changes the traditional model that requires shutdown to dismantle and replace the filter screen. During the replacement of the filter screen, the material conveying does not need to be interrupted, and the circulating pump can continue to operate. This not only greatly simplifies the operation process of replacing the filter screen and reduces the intensity of manual operation and time costs, but more importantly, it ensures the continuity of production and avoids production interruptions caused by shutdown for screen replacement. Especially for uninterrupted production systems, it effectively reduces the economic losses caused by downtime, while also ensuring that the stability of material conveying and product quality are not affected by the screen replacement operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the working structure of the material circulation pump inlet filter device provided in the embodiment of this application; Figure 2 A cross-sectional view of the material circulation pump inlet filter device provided in an embodiment of this application; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 This is a schematic diagram of the structure of the baffle provided in an embodiment of this application.

[0019] The labels for the attached figures are as follows: 1. Filter box; 2. Mounting slot; 3. Filter screen; 4. Linkage mechanism; 101. Inlet end; 102. Insertion hole; 103. Installation gap; 104. Sealing plate; 105. Rotating shaft; 106. First limiting plate; 107. Baffle; 108. Spring; 109. Second limiting plate; 110. Slide groove; 111. Slider; 112. Sealing ring; 113. Handle; 114. Drainage chamber; 115. Drainage pipe; 116. Drainage valve 201. Mounting plate; 401. Linkage hole; 402. Vertical hole; 403. Horizontal hole; 404. Piston; 405. Linkage block. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0021] It should be further noted that the accompanying drawings and embodiments of this application mainly describe the concept of this application. Based on this concept, some specific forms and arrangements of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this application, they can implement the above-mentioned specific forms and arrangements in a well-known manner.

[0022] When a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0023] The terms “length”, “width”, “up”, “down”, “front”, “back”, “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.

[0024] 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, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0025] The material circulation pump inlet filter device provided in this application will now be described.

[0026] Please refer to the following: Figures 1 to 4 The material circulation pump inlet filtration device includes a filter box 1, two mounting slots 2, a filter screen 3, and a linkage mechanism 4. The inlet end 101 of the filter box 1 is connected to the feed pipe, and the outlet end of the filter box 1 is connected to the feed end of the circulation pump. Two insertion holes 102 are provided on the side wall of the filter box 1. The two mounting slots 2 are vertically arranged on the inner wall of the filter box 1, with each mounting slot 2 corresponding to one of the insertion holes 102, and the mounting slots 2 are connected to the corresponding insertion holes 102. The filter screen 3 can pass through the insertion holes 102 into the mounting slot 2, and the filter screen 3 is arranged perpendicular to the material flow direction. The linkage mechanism 4 is located inside the filter box 1. The input and output ends of the linkage mechanism 4 are reversible, and each input and output end of the linkage mechanism 4 is connected to one of the mounting slots 2, so that after a filter screen 3 is installed in one mounting slot 2, the filter screen 3 in the other mounting slot 2 is ejected through the corresponding insertion hole 102.

[0027] The beneficial effects of the material circulation pump inlet filter device provided in this embodiment are as follows: Compared with the prior art, the material circulation pump inlet filter device provided in this embodiment, through the setting of two mounting slots 2, a filter screen 3 that can be inserted into the mounting slot 2 through the insertion hole 102 and arranged perpendicular to the material flow direction, and a linkage mechanism 4 with reversible input and output ends connected to the two mounting slots 2 respectively, allows the filter screen 3 in the other mounting slot 2 to pop out through the corresponding insertion hole 102 after the filter screen 3 is installed in one mounting slot 2. From the perspective of usage logic, when the working filter screen 3 intercepts a certain amount of impurities and needs to be cleaned or replaced, there is no need to stop the machine and disassemble the entire filter device. It is only necessary to insert a new filter screen 3 into the empty mounting slot 2. During the insertion process, the linkage mechanism 4 will be linked due to the force on the input end, and its output end will drive the original dirty filter screen 3 to pop out from the corresponding insertion hole 102, realizing the rapid replacement of the filter screen 3.

[0028] This design completely changes the traditional mode that requires shutdown to dismantle the device and replace the screen. During the replacement of filter screen 3, the material conveying does not need to be interrupted, and the circulating pump can continue to run. This not only greatly simplifies the operation process of replacing filter screen 3 and reduces the intensity of manual operation and time costs, but more importantly, it ensures the continuity of production and avoids production interruptions caused by shutdown for screen replacement. Especially for uninterrupted production systems, it effectively reduces the economic losses caused by downtime, while also ensuring that the stability of material conveying and product quality are not affected by the screen replacement operation.

[0029] like Figure 2 As shown, the inner wall of the filter box 1 is provided with two sets of mounting plates 201. Each set of mounting plates 201 includes four pieces. The four mounting plates 201 of the same set are symmetrically arranged in pairs on opposite inner walls of the filter box 1 to form mounting slots 2 for inserting the filter screen 3.

[0030] This specific arrangement of the mounting plates 201 makes the structure of the mounting groove 2 more regular and stable. From an installation perspective, the four symmetrical mounting plates 201 can limit the filter screen 3 from both sides, ensuring that the filter screen 3 is accurately and fixedly positioned after being inserted into the mounting groove 2. It will not shift, shake, or even fall off due to the impact force or fluid pressure during material conveying, ensuring that the filter screen 3 is always arranged perpendicular to the material flow direction, thereby ensuring the stability and reliability of the filtration effect and preventing impurities from being effectively intercepted and entering the circulation pump due to improper positioning of the filter screen 3.

[0031] Meanwhile, the well-organized mounting slot 2 structure makes the insertion and removal of the filter screen 3 smoother, reducing resistance during insertion and removal, further simplifying the filter screen 3 replacement operation and improving replacement efficiency. Furthermore, the symmetrical arrangement of the mounting plates 201 evenly distributes the fluid pressure on the filter screen 3, reducing the risk of damage due to excessive localized stress, extending the service life of the filter screen 3, reducing the frequency of replacement and operating costs, and indirectly ensuring continuous and stable production operation. Furthermore, the bottom of the mounting plate 201 is spaced apart from the inner bottom surface of the filter box 1. From the perspective of material flow and impurity deposition, this prevents impurities from accumulating in the mounting groove 2, thereby facilitating the installation of the filter screen 3.

[0032] like Figure 2 As shown, the linkage mechanism 4 includes a linkage hole 401, two pistons 404, and two linkage blocks 405. The linkage hole 401 includes two vertical holes 402 and a horizontal hole 403 connected to the bottom end of the two vertical holes 402. The linkage hole 401 is located on the bottom plate of the filter box 1. The top ends of the two vertical holes 402 communicate with the inner cavity of the filter box 1, and the vertical holes 402 correspond one-to-one with the two mounting slots 2. The projection of the mounting slots 2 onto the bottom surface of the filter box 1 at least partially coincides with the vertical holes 402 on the filter box 1. The projections on the bottom surface coincide; two pistons 404 are slidably disposed in two vertical holes 402 respectively, and a force transmission medium is filled between the two pistons 404; two linkage blocks 405 correspond one-to-one with the pistons 404, the linkage blocks 405 are disposed on the top of the corresponding pistons 404, and the linkage blocks 405 can be completely housed in the vertical holes 402 due to the sliding of the pistons 404, and when one linkage block 405 is completely housed in the vertical holes 402, a portion of the other linkage block 405 extends into the filter box 1.

[0033] When the filter screen 3 is inserted into one of the mounting slots 2, the filter screen 3 will press down on the corresponding linkage block 405. The linkage block 405 pushes the piston 404 to slide downward in the vertical hole 402. Since there is a force transmission medium between the two pistons 404, according to the principle of hydrostatic pressure transmission, the pressure generated by the downward sliding of one piston 404 will be transmitted to the other piston 404 through the force transmission medium, pushing the other piston 404 to slide upward, thereby causing the corresponding linkage block 405 to extend upward and partially into the filter box 1, pushing the dirty filter screen 3 in the other mounting slot 2 to move upward, and finally causing it to pop out through the corresponding insertion hole 102.

[0034] This linkage method based on the force transmission medium has high transmission efficiency and rapid response, enabling synchronous operation of filter screen 3 insertion and removal, further shortening the filter screen 3 replacement time and ensuring efficient and quick screen replacement. Simultaneously, the structural design of the linkage hole 401 ensures that the linkage block 405 can accurately act on the filter screen 3 within the mounting slot 2, preventing linkage failure. The sliding cooperation between the piston 404 and the linkage block 405 ensures smooth linkage action, reducing the likelihood of jamming and improving the overall operational reliability of the filtration device.

[0035] In addition, the use of the force transmission medium ensures uniform force transmission between the two pistons 404, avoids excessive local stress that could damage components, extends the service life of the linkage mechanism 4, and ensures the long-term stable operation of the filter device, thereby continuously ensuring the continuity of production and the safe operation of the circulating pump.

[0036] In addition, the vertical hole 402 includes a large diameter section and a small diameter section. The small diameter section is located at the top of the large diameter section. The diameter of the piston 404 is larger than the diameter of the linkage block 405. The piston 404 is slidably located in the large diameter section. The linkage block 405 is inserted in the small diameter section. The projection of the mounting groove 2 on the bottom surface of the filter box 1 coincides at least partially with the projection of the small diameter section on the bottom surface of the filter box 1.

[0037] The larger diameter section provides the piston 404 with more installation and sliding space, enabling the piston 404 to slide stably within the vertical hole 402, reducing friction between the piston 404 and the wall of the vertical hole 402, reducing the risk of jamming. At the same time, the larger diameter section can also accommodate more force transmission medium, ensuring the stability and effectiveness of force transmission.

[0038] Secondly, the small diameter section guides and limits the linkage block 405, ensuring that the linkage block 405 always moves in the vertical direction and avoids the linkage block 405 from deviating during the movement. This ensures that the linkage block 405 can accurately contact and apply force to the filter screen 3 in the mounting groove 2, ensuring that the filter screen 3 can be smoothly ejected or limited.

[0039] Furthermore, the design of piston 404 having a larger diameter than linkage block 405 allows for a larger force-bearing area when piston 404 slides within the larger diameter section, enabling more effective pressure transmission. It also prevents piston 404 from entering the smaller diameter section, thus avoiding failure of linkage mechanism 4. This segmented vertical hole 402 structure, along with the size matching design of piston 404 and linkage block 405, makes the structure of linkage mechanism 4 more rational, its operation more stable and reliable, further ensuring the efficiency and smoothness of filter screen 3 replacement, thereby guaranteeing production continuity. It also extends the service life of linkage mechanism 4 and reduces equipment maintenance costs.

[0040] like Figure 2 and Figure 3As shown, an installation gap 103 is provided between the mounting plate 201 and the top plate of the filter box 1. Two sealing plates 104 are hinged in the installation gap 103. The sealing plates 104 correspond one-to-one with the insertion holes 102. An energy storage component is provided between the sealing plate 104 and the filter box 1. When the energy storage component is in its natural state, the sealing plate 104 blocks the corresponding insertion hole 102. When the filter screen 3 is inserted into the mounting groove 2, the filter screen 3 pushes the sealing plate 104 to flip and causes the energy storage component to store energy.

[0041] When the filter screen 3 is not inserted or popped out, the energy storage component is in its natural state. The sealing plate 104 blocks the corresponding insertion hole 102, which can effectively prevent the material in the filter box 1 from overflowing from the insertion hole 102, avoiding material waste and environmental pollution. At the same time, it can also prevent external dust, impurities, etc. from entering the filter box 1 through the insertion hole 102, contaminating the material or affecting the filtration effect, ensuring the purity of the material and the safe operation of the circulation pump.

[0042] Secondly, when the filter screen 3 is inserted into the mounting slot 2, the filter screen 3 pushes the sealing plate 104 to flip, and the energy storage component stores energy. At this time, the insertion hole 102 is opened, which facilitates the smooth insertion of the filter screen 3. After the insertion is completed, the filter screen 3 supports the sealing plate 104, keeps the insertion hole 102 open, and ensures that the filter screen 3 works normally.

[0043] When the filter screen 3 is ejected, the sealing plate 104 automatically flips under the reset force of the energy storage component, re-sealing the socket 102, thus achieving automatic sealing of the socket 102 without the need for additional manual operation, further simplifying the operation process and improving the automation level of the equipment.

[0044] In addition, the hinged design of the sealing plate 104 makes its flipping action smooth and will not cause excessive resistance to the insertion and removal of the filter screen 3. The setting of the energy storage component ensures the sealing and reliability of the sealing plate 104, avoiding material leakage or impurity entry caused by poor sealing, thereby ensuring stable production and reducing economic losses and safety hazards caused by sealing problems.

[0045] Specifically, the sealing plate 104 has a rotating shaft 105 at both ends. The rotating shaft 105 is rotatably mounted on the inner wall of the filter box 1. The energy storage component is a torsion spring. One end of the torsion spring is connected to the sealing plate 104, and the other end of the torsion spring is connected to the inner wall of the filter box 1.

[0046] The rotating connection between the rotating shaft 105 and the inner wall of the filter box 1 makes the rotation of the sealing plate 104 more flexible and smooth, reduces the frictional resistance during rotation, reduces the risk of jamming or damage to the sealing plate 104 due to long-term rotation, and ensures that the sealing plate 104 can stably achieve the rotation and sealing functions for a long time.

[0047] like Figure 1 and Figure 4As shown, the top of the filter box 1 is provided with a first limiting plate 106, which is located between two insertion holes 102. The top of the filter box 1 is provided with two second limiting plates 109, which are located on both sides of the first limiting plate 106. Two baffles 107 are slidably provided on the top of the filter box 1. The baffles 107 correspond one-to-one with the second limiting plates 109. A spring 108 is provided between the baffles 107 and the corresponding second limiting plates 109. When the spring 108 is in its natural state, the baffles 107 abut against the first limiting plate 106 and block the insertion holes 102. The baffles 107 can compress the spring 108 under the action of external force to release the blockage of the insertion holes 102.

[0048] In the natural state of the spring 108, the baffle 107 abuts against the first limiting plate 106 under the elastic force of the spring 108, providing the first sealing of the insertion hole 102 and forming a double seal with the baffle 107, which can effectively enhance the sealing effect. Even if the baffle 107 becomes loose due to long-term use, the baffle 107 can still play an auxiliary sealing role, further preventing material leakage and the entry of external impurities, ensuring material purity and equipment safety.

[0049] Secondly, when the filter screen 3 needs to be inserted, the baffle 107 is pushed by the external force, causing the baffle 107 to compress the spring 108 and slide towards the second limiting plate 109, thereby releasing the blockage of the insertion hole 102 and ensuring that the filter screen 3 can be inserted smoothly.

[0050] Furthermore, after the filter screen 3 is inserted, its top end is flush with the top end of the filter box 1. The arrangement of the baffle 107 can shield the filter screen 3, keeping it within the mounting groove 2. Moreover, the force transmission medium in this embodiment can be compressed air. When the old filter screen 3 needs to be replaced with a new one, first open the corresponding insertion hole 102 of the new filter screen 3 and fully insert it. At this time, the compressed air will be compressed. Then, open the corresponding insertion hole 102 of the old filter screen 3, and the old filter screen 3 will pop out under the action of the linkage block 405. This ensures that throughout the entire installation process, the material is filtered by the filter screen 3, preventing unfiltered material from entering the production stage.

[0051] like Figure 1 The top surface of the filter box 1 is provided with a T-shaped groove 110, and the bottom of the baffle 107 is provided with a slider 111 that is adapted to the groove 110. The slider 111 is inserted into the groove 110. The top of the baffle 107 is provided with a handle 113. The bottom surface of the baffle 107 is provided with a sealing ring 112. The sealing ring 112 is clamped between the baffle 107 and the top surface of the filter box 1, and when the baffle 107 abuts against the lower limit plate, the sealing ring 112 is arranged around the insertion hole 102.

[0052] The design of the T-shaped groove 110 and the slider 111 makes the sliding of the baffle 107 smoother and more stable, preventing the baffle 107 from shifting, jamming, or falling off during the sliding process, and ensuring that the baffle 107 can accurately perform the blocking and unlocking actions. At the same time, the T-shaped structure also provides axial limit for the slider 111, preventing the slider 111 from falling out of the groove 110, thus improving the structural stability and operational reliability of the baffle 107 assembly.

[0053] Secondly, the handle 113 on the top of the baffle 107 facilitates manual operation. When it is necessary to manually adjust the position of the baffle 107 or perform maintenance, the baffle 107 can be easily pulled by the handle 113, reducing the difficulty of operation and the intensity of manual labor. Most importantly, the sealing ring 112 on the bottom surface of the baffle 107 is arranged around the insertion hole 102 when the baffle 107 abuts against the limiting plate, which can further enhance the sealing performance. The elastic material of the sealing ring 112 can fill the tiny gap between the baffle 107 and the top surface of the filter box 1, effectively preventing material from leaking from the gap. At the same time, it can also block external dust, impurities, etc. from entering the filter box 1 through the gap, further ensuring the purity of the material and the normal operation of the filtration device.

[0054] Furthermore, the installation of the sealing ring 112 does not affect the sliding and resetting action of the baffle 107. While improving sealing performance, it does not increase operating resistance, making the entire device more convenient and reliable to use, extending its service life, reducing maintenance costs, and thus ensuring continuous and stable production and the safe operation of the circulating pump. Finally, the inner cavity between the installation groove 2 and the inlet end 101 of the filter box 1 is a sludge chamber 114. The bottom surface of the sludge chamber 114 is funnel-shaped. A drain pipe 115 is provided at the bottom of the sludge chamber 114. A drain valve 116 is provided on the drain pipe 115. The drain valve 116 can open or close the drain pipe 115.

[0055] The funnel-shaped bottom surface gives the dirt chamber 114 a good dirt-collecting effect. When the filter screen 3 intercepts impurities, the impurities will gather at the lowest point of the funnel-shaped bottom surface under the action of gravity, avoiding the impurities from accumulating randomly in the dirt chamber 114, which would cause the dirt chamber 114 to be blocked or affect the flow of materials.

[0056] Moreover, such as Figure 2 As shown, in this embodiment, the two mounting slots 2 are arranged left and right. The funnel-shaped bottom of the dirt chamber 114 extends to one side of the left mounting slot 2, so that the impurities filtered out by the left filter screen 3 can enter the drain pipe 115 under the action of gravity and will not accumulate next to the left filter screen. This prevents some of the impurities filtered out by the left filter screen 3 from entering the production process when the right filter screen 3 is replaced.

[0057] In addition, this centralized sewage discharge design reduces the residue of impurities in the filter box 1, extends the service life of the filter device, and also reduces the problem of decreased filtration effect caused by impurity accumulation. This ensures that the filter screen 3 can always maintain a good filtration state, effectively intercept impurities, ensure the stable operation of the circulation pump, reduce the maintenance cost and failure rate of the circulation pump, and thus ensure production efficiency and product quality.

[0058] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A material circulation pump inlet filter device, characterized in that, include: The filter box (1) has an inlet end (101) connected to a feed pipe, and an outlet end connected to the feed end of a circulating pump. The filter box (1) has two insertion holes (102) on its side wall. Two mounting slots (2) are vertically installed on the inner wall of the filter box (1). The mounting slots (2) correspond one-to-one with the insertion holes (102). The mounting slots (2) are connected to the corresponding insertion holes (102). The filter screen (3) can pass through the insertion hole (102) and enter the mounting groove (2), and the filter screen (3) is arranged perpendicular to the flow direction of the material; The linkage mechanism (4) is located inside the filter box (1). The input and output ends of the linkage mechanism (4) are reversible, and the input and output ends of the linkage mechanism (4) are each connected to one of the mounting slots (2), so that after the filter screen (3) is installed in one of the mounting slots (2), the filter screen (3) in the other mounting slot (2) pops out through the corresponding socket (102).

2. The material circulation pump inlet filter device as described in claim 1, characterized in that: The filter box (1) has two sets of mounting plates (201) on its inner wall. Each set of mounting plates (201) includes four pieces. The four mounting plates (201) in the same set are symmetrically arranged in pairs on opposite inner walls of the filter box (1) to form the mounting groove (2) for the filter screen (3) to be inserted.

3. The material circulation pump inlet filter device as described in claim 2, characterized in that: The bottom end of the mounting plate (201) is spaced apart from the inner bottom surface of the filter box (1).

4. The material circulation pump inlet filter device as described in claim 3, characterized in that, The linkage mechanism (4) includes: The linkage hole (401) includes two vertical holes (402) and a horizontal hole (403) connected to the bottom end of the two vertical holes (402). The linkage hole (401) is provided on the bottom plate of the filter box (1). The top ends of the two vertical holes (402) are connected to the inner cavity of the filter box (1). The vertical holes (402) correspond one-to-one with the two mounting slots (2). The projection of the mounting slot (2) on the bottom surface of the filter box (1) coincides at least partially with the projection of the vertical hole (402) on the bottom surface of the filter box (1). Two pistons (404) are slidably disposed in the two vertical holes (402) respectively, and a force-transmitting medium is filled between the two pistons (404); Two linkage blocks (405) correspond one-to-one with the piston (404). The linkage block (405) is located on the top of the corresponding piston (404), and the linkage block (405) can be completely housed in the vertical hole (402) due to the sliding of the piston (404). When one of the linkage blocks (405) is completely housed in the vertical hole (402), a portion of the other linkage block (405) extends into the filter box (1).

5. The material circulation pump inlet filter device as described in claim 4, characterized in that: The vertical hole (402) includes a large diameter section and a small diameter section. The small diameter section is located at the top of the large diameter section. The diameter of the piston (404) is larger than the diameter of the linkage block (405). The piston (404) is slidably disposed in the large diameter section. The linkage block (405) is inserted in the small diameter section. The projection of the mounting groove (2) on the bottom surface of the filter box (1) coincides at least partially with the projection of the small diameter section on the bottom surface of the filter box (1).

6. The material circulation pump inlet filter device as described in claim 5, characterized in that: An installation gap (103) is provided between the mounting plate (201) and the top plate of the filter box (1). Two sealing plates (104) are hinged in the installation gap (103). The sealing plates (104) correspond one-to-one with the insertion holes (102). An energy storage component is provided between the sealing plate (104) and the filter box (1). When the energy storage component is in its natural state, the sealing plate (104) blocks the corresponding insertion hole (102). When the filter screen (3) is inserted into the mounting groove (2), the filter screen (3) pushes the sealing plate (104) to flip and causes the energy storage component to store energy.

7. The material circulation pump inlet filter device as described in claim 6, characterized in that: The sealing plate (104) has a rotating shaft (105) at both ends. The rotating shaft (105) is rotatably mounted on the inner wall of the filter box (1). The energy storage component is a torsion spring. One end of the torsion spring is connected to the sealing plate (104), and the other end of the torsion spring is connected to the inner wall of the filter box (1).

8. The material circulation pump inlet filter device as described in claim 6, characterized in that: The filter box (1) is provided with a first limiting plate (106) at the top, which is located between the two insertion holes (102). The filter box (1) is provided with two second limiting plates (109) at the top, which are located on both sides of the first limiting plate (106). Two baffles (107) are slidably provided on the top of the filter box (1). The baffles (107) correspond one-to-one with the second limiting plate (109). A spring (108) is provided between the baffles (107) and the corresponding second limiting plate (109). When the spring (108) is in its natural state, the baffles (107) abut against the first limiting plate (106), and the baffles (107) block the socket (102). The baffles (107) can compress the spring (108) under the action of external force to release the blockage of the socket (102).

9. The material circulation pump inlet filter device as described in claim 8, characterized in that: The filter box (1) has a T-shaped groove (110) on its top surface. The bottom of the baffle (107) has a slider (111) that matches the groove (110). The slider (111) is inserted into the groove (110). The top of the baffle (107) has a handle (113). The bottom surface of the baffle (107) has a sealing ring (112). The sealing ring (112) is clamped between the baffle (107) and the top surface of the filter box (1). When the baffle (107) abuts against the first limiting plate (106), the sealing ring (112) is arranged around the insertion hole (102).

10. The material circulation pump inlet filter device as described in claim 2, characterized in that: The inner cavity between the mounting groove (2) and the inlet end (101) of the filter box (1) is a sludge chamber (114). The bottom surface of the sludge chamber (114) is funnel-shaped. A drain pipe (115) is provided at the bottom of the sludge chamber (114). A drain valve (116) is provided on the drain pipe (115). The drain valve (116) can open or close the drain pipe (115).

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