A filter device for polyurethane production

Abstract

The utility model discloses a kind of filtering devices for polyurethane production, it is related to polyurethane production device technical field, to solve the technical problem of raw material static stratification, impurity aggregation leads to low filtering efficiency, uneven purity, including stirring mechanism, filter mechanism and shell, the stirring mechanism is arranged in the upper end one side inside shell, the filter mechanism is arranged in the lower end one side inside shell, and the stirring mechanism and filter mechanism are staggered distribution in the overhead direction of shell.The utility model is by designing tray and stirring rod structure, when input pipe transports polyurethane liquid raw material to jar body A, its liquid is affected by buffer block and is evenly transmitted to tray, and stirring rod arranged in tray will agitate raw material into tray, and evenly stir the particle impurities in raw material in raw material, avoid filter bag to appear local jamming phenomenon when filtering it, ensure raw material uniformity after filtering, improve filtering efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of polyurethane production equipment, and more specifically, to a filtration device for polyurethane production. Background Technology

[0002] Polyurethane is a class of polymeric compounds formed by the chemical reaction of isocyanates and polyols, with repeating urethane groups in its molecular chain. Its main raw materials include isocyanates (such as MDI and TDI), polyols (such as polyester polyols and polyether polyols), and additives such as catalysts and stabilizers. These raw materials are easily contaminated with impurities such as metal shavings, dust, and undissolved particles during storage and transportation, requiring filtration and purification to ensure the quality of polyurethane products.

[0003] Existing filtration devices for polyurethane raw materials mostly use a single filter screen or membrane as the core filtration component, primarily removing impurities through physical interception, lacking a mechanism for stirring and homogenizing the raw materials. Furthermore, components in polyurethane raw materials such as polyols and isocyanates are prone to stratification due to density differences when left to stand; impurities such as metal scraps and dust mixed in the raw materials also easily settle and accumulate at the bottom or in localized areas due to gravity. Because of the lack of stirring and homogenization, these stratified raw materials and settled impurities directly enter the filtration stage, leading to a sudden increase in localized impurity concentration during filtration. This easily causes concentrated clogging of the filter media surface, shortening the filter media's lifespan, reducing filtration efficiency, and affecting the raw material purification effect. Therefore, we propose a filtration device for polyurethane production. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a filtration device for polyurethane production to solve the technical problems of low filtration efficiency and uneven purity caused by raw material stratification and impurity accumulation.

[0005] To solve the above technical problems, the present invention provides the following technical solution: a filtration device for polyurethane production, comprising a stirring mechanism, a filtration mechanism and a housing, wherein the stirring mechanism is arranged on one side of the upper end of the housing, the filtration mechanism is arranged on one side of the lower end of the housing, and the stirring mechanism and the filtration mechanism are staggered in the top view of the housing.

[0006] The stirring mechanism includes a tank A, a tray arranged in the middle inside the tank A, a collection hopper arranged on the lower surface of the tray, a stirring rod arranged on the upper surface of the tray, a shaft A connected to the stirring rod, the shaft A arranged inside a buffer block, and the buffer block arranged inside the tank A by a support rod.

[0007] Preferably, a tank cover A is arranged at the upper outer end of the tank body A, and a transmission pipe is arranged at the lower outer end of the tank body A, with one end of the transmission pipe connected to the filtration mechanism.

[0008] Preferably, an input pipe is arranged through one side of the outer side of the tank body A, a ramp is arranged inside the input pipe, an impeller is arranged on one side of the ramp, a shaft B is arranged in the middle of the impeller, and the lower end of the shaft B is connected to the shaft A through a transmission belt, the transmission belt being arranged inside the support rod.

[0009] Preferably, a drain pipe is installed through one side of the inside of the tray, and a valve is arranged on the drain pipe.

[0010] Preferably, the tray has a side recess and a central protrusion structure, and the central protrusion of the tray adopts a through structure design, and the buffer block has a conical structure shape.

[0011] Preferably, the filtration mechanism includes a tank B, with an overlap in the middle of the interior of the tank B, a mesh basket placed on the overlap, a filter bag placed inside the mesh basket, a pressure plate placed at the top of the mesh basket, a tank cover B placed at the upper exterior of the tank B, and an output pipe placed at the lower exterior of the tank B.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the design of a tray and stirring rod structure, ensures that when the polyurethane liquid raw material is transported into tank A through the input pipe, the liquid is evenly distributed into the tray due to the influence of the buffer block. The stirring rod arranged in the tray agitates the raw material entering the tray, evenly dispersing particulate impurities in the raw material, avoiding local clogging of the filter bag during filtration, ensuring the uniformity of the filtered raw material, and improving filtration efficiency.

[0014] 2. The tray structure with a side notch and a middle convexity of this utility model helps the raw materials transported by the input pipe to be temporarily retained inside, which facilitates the stirring rod to agitate and disperse the raw materials, thereby reducing the local clogging of the filter bag in the subsequent filtration mechanism. The design of the middle convexity and through-hole facilitates the overflow of raw materials filled in the side notch to the collection hopper, which is conducive to the uniformly agitated raw materials being discharged into the filtration mechanism for filtration.

[0015] 3. This utility model, through the design of an impeller, shaft B, transmission belt, and shaft A, allows the impeller to rotate when the raw material is transported to tank A through the input pipe. The rotation of the impeller then transmits the rotational power to the stirring rod through shaft B, transmission belt, and shaft A, thereby driving the stirring rod to evenly disperse the raw material in the tray. This structure eliminates the need for additional electrical control drive equipment, helping to reduce additional capital investment in the equipment and enabling the recovery and utilization of power. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the main appearance structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention from the front view.

[0018] Figure 3 This is a schematic diagram of the internal structure of the filtration mechanism of this utility model;

[0019] Figure 4 This is an exploded view of the filtration mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the internal structure of the stirring mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the planar structure of the stirring mechanism of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Stirring mechanism; 101. Tank A; 102. Tray; 103. Gathering hopper; 104. Stirring rod; 105. Shaft A; 106. Buffer block; 107. Support rod; 108. Tank cover A; 109. Transfer pipe; 1010. Input pipe; 1011. Slope block; 1012. Impeller; 1013. Shaft B; 1014. Drive belt; 1015. Drain pipe; 1016. Valve; 2. Filtration mechanism; 201. Tank B; 202. Overlap; 203. Wire basket; 204. Filter bag; 205. Pressure plate; 206. Tank cover B; 207. Output pipe; 3. Outer shell. Detailed Implementation

[0024] like Figures 1 to 6 As shown, the present invention relates to a filtration device for polyurethane production, which includes a stirring mechanism 1, a filtration mechanism 2 and a housing 3. The stirring mechanism 1 is arranged on the upper side inside the housing 3, and the filtration mechanism 2 is arranged on the lower side inside the housing 3. The stirring mechanism 1 and the filtration mechanism 2 are staggered in the top view of the housing 3.

[0025] The stirring mechanism 1 includes a tank A101, a tray 102 is arranged in the middle inside the tank A101, a collection hopper 103 is arranged on the lower surface of the tray 102, a stirring rod 104 is arranged on the upper surface of the tray 102, a shaft A105 is connected to the stirring rod 104, the shaft A105 is arranged inside the buffer block 106, and the buffer block 106 is arranged inside the tank A101 through a support rod 107. This utility model, through the design of the tray 102 and stirring rod 104 structure, ensures that when the input pipe 1010 delivers polyurethane liquid raw material into the tank A101, the liquid is evenly distributed into the tray 102 due to the influence of the buffer block 106. The stirring rod 104 arranged in the tray 102 agitates the raw material entering the tray 102, evenly dispersing particulate impurities in the raw material, avoiding local blockage of the filter bag 204 during filtration, and ensuring the uniformity of the filtered raw material, thus improving filtration efficiency. The installation of the gathering hopper 103 allows the evenly agitated raw material to be discharged into the interior of the tray 102 through the through-hole in the middle, where it gathers the raw material and discharges it uniformly into the transmission pipe 109. The staggered arrangement of the stirring mechanism 1 and the filtration mechanism 2 provides a convenient operating position for the operator to disassemble the internal tank lid A108 and tank lid B206 after opening the top cover of the outer shell 3.

[0026] In this embodiment of the invention, a can lid A108 is arranged on the upper part of the tank body A101, and a transmission pipe 109 is arranged on the lower part of the tank body A101. One end of the transmission pipe 109 is connected to the filter mechanism 2. The can lid A108 of this invention allows the upper part of the tank body A101 to be closed and opened, facilitating the disassembly, cleaning, and replacement of the internal structure of the tank body A101 by the operators. The transmission pipe 109 allows the dispersed raw materials to be transferred to the filter mechanism 2 for filtration processing.

[0027] In an embodiment of this utility model, an input pipe 1010 is arranged through one side of the outer side of the tank body A101. A ramp 1011 is arranged inside the input pipe 1010. An impeller 1012 is arranged on one side of the ramp 1011. A shaft B1013 is arranged in the middle of the impeller 1012. The lower end of the shaft B1013 is connected to the shaft A105 through a transmission belt 1014. The transmission belt 1014 is arranged inside the support rod 107. This invention, through the design of the impeller 1012, shaft B1013, transmission belt 1014, and shaft A105, allows the impeller 1012 to rotate when the raw material is transported to the tank A101 via the input pipe 1010. The rotation of the impeller 1012, through the shaft B1013, transmission belt 1014, and shaft A105, transmits the rotational power to the stirring rod 104, thereby driving the stirring rod 104 to evenly disperse the raw material in the tray 102. This structure eliminates the need for additional electrical control drive equipment, helping to reduce additional capital investment in equipment and enabling the recovery and utilization of power. The arrangement of the ramp 1011 causes the raw material transported in the input pipe 1010 to impact and flow towards the impeller 1012 side when it encounters the ramp 1011 due to the slope of the ramp, thus controlling the stable unidirectional rotation of the impeller 1012.

[0028] In this embodiment of the invention, a drain pipe 1015 is installed through one side of the inside of the tray 102, and a valve 1016 is arranged on the drain pipe 1015. Through the structure of the drain pipe 1015 and the valve 1016, when the input pipe 1010 no longer agitates and filters the raw material input into the tank A101, the remaining raw material will remain in the tray 102 because it is no longer subjected to the pressure of the input material. The operator can then rotate the valve 1016 to drain the remaining raw material from the tray 102 through the drain pipe 1015, thus preventing the accumulated raw material from contaminating the next processing operation.

[0029] In this embodiment of the invention, the tray 102 has a side concave and central convex structure, and the central convex part of the tray 102 adopts a through structure design, while the buffer block 106 has a conical structure. The side concave and central convex structure of the tray 102 of this invention helps the raw material conveyed by the input pipe 1010 to be temporarily retained inside, which facilitates the stirring rod 104 to stir and disperse the raw material, thereby reducing the local blockage of the filter bag 204 in the subsequent filtration mechanism 2. The central convex and through design facilitates the overflow of raw material filled in the side concave into the collection hopper 103, which is conducive to the uniformly stirred raw material being discharged into the filtration mechanism 2 for filtration. The conical buffer block 106 can slow down the raw material conveyed by the input pipe 1010 into the tank A101 and distribute it evenly inside the tray 102, achieving a buffering and uniform effect.

[0030] In an embodiment of this utility model, the filtration mechanism 2 includes a tank B201, an overlap 202 arranged in the middle inside the tank B201, a mesh basket 203 placed on the overlap 202, a filter bag 204 arranged inside the mesh basket 203, a pressure plate 205 placed on the upper end of the mesh basket 203, a tank cover B206 arranged on the upper end of the outside of the tank B201, and an output pipe 207 arranged on the lower end of the outside of the tank B201. This utility model, through the design of the mesh basket 203 and filter bag 204 structure, allows the mesh basket 203 to support the filter bag 204 inside the tank B201, preventing it from falling off due to impact from the raw materials. The filter bag 204 allows the raw materials, after being uniformly stirred in the stirring mechanism 1, to be received and filtered out after being transferred to the tank B201, thus achieving the effect of filtering impurities from the raw materials. The installation of the pressure plate 205 allows the filter bag 204 placed on the mesh basket 203 to be pressed and fixed, preventing it from falling into the mesh basket 203 due to direct impact from the raw materials. The tank cover B206 allows the upper end of the tank B201 to be closed and opened, facilitating the removal, cleaning, and replacement of the filter bag 204 and other structures inside the tank B201 by the staff. The output pipe 207 allows the filtered raw materials to be discharged outside the outer shell 3.

[0031] Working Principle: This embodiment provides a filtration device for polyurethane production. During use, the operator uses a pump or other equipment to transport the polyurethane liquid raw material to be filtered through a pipeline into the input pipe 1010. The raw material entering the input pipe 1010 is impacted by the ramp 1011 and strikes one side of the impeller 1012. When the raw material impacts the impeller 1012, it causes it to rotate. The rotation of the impeller 1012 drives the centrally fixed shaft B1013 to rotate. The rotation of shaft B1013, in turn, drives shaft A105 to rotate via a transmission belt 1014 at its lower end. The rotation of shaft A105 causes the stirring rod 104 at its lower end to rotate as well. At this time, the raw material transmitted through the input pipe 1010 to the tank A101 impacts the buffer... On block 106, the material is buffered and evenly transferred to tray 102 by the conical structure of the buffer block 106. The material entering tray 102 is rotated and dispersed by the rotating stirring rod 104. When the material is evenly dispersed, it is squeezed into the through part in the middle of tray 102 by the input of subsequent material. The material that has been evenly dispersed through the through part flows into the collecting hopper 103. It is collected by the collecting hopper 103 and then transferred to the transfer pipe 109. The material is transported to the filter mechanism 2 through the transfer pipe 109. When the material enters the tank B201, it directly enters the filter bag 204 through the hole opened on the pressure plate 205. The filter bag 204 filters the impurities in the material. The filtered material is finally discharged to the outside of the outer shell 3 through the output pipe 207.

[0032] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A filter device for polyurethane production, characterized by: It includes a stirring mechanism (1), a filtering mechanism (2) and a shell (3). The stirring mechanism (1) is arranged on the upper side inside the shell (3), and the filtering mechanism (2) is arranged on the lower side inside the shell (3). The stirring mechanism (1) and the filtering mechanism (2) are staggered in the top view of the shell (3). The stirring mechanism (1) includes a tank A (101), a tray (102) is arranged in the middle inside the tank A (101), an aggregating hopper (103) is arranged on the lower surface of the tray (102), a stirring rod (104) is arranged on the upper surface of the tray (102), a shaft A (105) is connected to the stirring rod (104), the shaft A (105) is arranged inside a buffer block (106), and the buffer block (106) is arranged inside the tank A (101) by a support rod (107).

2. The filtering device for polyurethane production according to claim 1, characterized in that: The upper part of the tank body A (101) is provided with a tank cover A (108), and the lower part of the tank body A (101) is provided with a transmission pipe (109). One end of the transmission pipe (109) is connected to the filter mechanism (2).

3. The filter device for polyurethane production according to claim 2, characterized in that: An input pipe (1010) is arranged through one side of the outer side of the tank body A (101). A ramp (1011) is arranged inside the input pipe (1010). An impeller (1012) is arranged on one side of the ramp (1011). A shaft B (1013) is arranged in the middle of the impeller (1012). The lower end of the shaft B (1013) is connected to the shaft A (105) through a transmission belt (1014). The transmission belt (1014) is arranged inside the support rod (107).

4. The filter device for polyurethane production according to claim 3, characterized in that: A drain pipe (1015) is installed through one side of the inside of the tray (102), and a valve (1016) is arranged on the drain pipe (1015).

5. The filter device for polyurethane production according to claim 4, characterized in that: The tray (102) has a side recess and a middle protrusion structure, and the middle protrusion of the tray (102) adopts a through structure design. The buffer block (106) has a conical structure shape.

6. The filter device for polyurethane production according to claim 5, characterized in that: The filtration mechanism (2) includes a tank body B (201), an overlap (202) is arranged in the middle inside the tank body B (201), a mesh basket (203) is placed on the overlap (202), a filter bag (204) is arranged inside the mesh basket (203), a pressure plate (205) is placed on the upper end of the mesh basket (203), a tank cover B (206) is arranged on the upper outside of the tank body B (201), and an output pipe (207) is arranged on the lower outside of the tank body B (201).

Images