Polyurethane resin filtering device

Abstract

The utility model relates to a polyurethane resin filtering device which comprises a machine shell, a cover plate is connected to the top of the machine shell in a sliding mode, a stirring and filtering mechanism is arranged on the bottom side of the cover plate, installation mechanisms are arranged on the left side and the right side of the machine shell, a feeding pipe is fixed to the interior of the cover plate, and a discharging pipe is fixed to the bottom of the machine shell. A valve is arranged on the discharge pipe; and the stirring and filtering mechanism comprises a motor fixed on the top side of the cover plate. According to the filtering device for the polyurethane resin, the stirring and filtering mechanism is arranged on the cover plate, so that polyurethane can be filtered out from a second filtering net under the action of centrifugal force generated by rotation of a stirring rod, meanwhile, the polyurethane can be filtered out from a first filtering net under the action of self gravity, and the filtering efficiency of the polyurethane is improved; the mounting mechanism is arranged on the machine shell, so that the stirring and filtering mechanism can be conveniently taken down to be cleaned, and the stirring and filtering mechanism does not need to be fixed by screws or dismounted by tools such as screwdrivers.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane production technology, specifically to a filtration device for polyurethane resin. Background Technology

[0002] Polyurethane is a polymer made from polyisocyanates and polyether polyols or polyester polyols and / or small molecule polyols, polyamines or water as chain extenders or crosslinking agents. By changing the types and composition of raw materials, the form and properties of products can be significantly changed, resulting in final products ranging from soft to hard. Polyurethane products include soft, semi-rigid and rigid foams, elastomers, paints and coatings, adhesives, sealants, synthetic leather coating resins, elastic fibers, etc., and are widely used in many fields such as automobile manufacturing, refrigerator manufacturing, transportation, civil engineering, footwear, synthetic leather, textiles, electromechanical, petrochemical, mining machinery, aviation, medical, and agriculture.

[0003] For example, Chinese Patent (CN215462479U) discloses a polyurethane resin filtration device, including a housing. The inner top wall of the housing is provided with a feed hopper extending to its top, and the inner bottom wall of the housing is provided with a discharge pipe extending to its bottom. Mounting frames are provided on both the left and right sides of the inner wall of the housing. This polyurethane resin filtration device, by setting an adjustment component, allows the filter screen to be disassembled. Pressing down on the T-shaped rod drives the rack plate to move downward along the inner wall of the mounting frame. The rack plate drives the gear meshing with it to rotate. The gear drives the drive frame to move upward along the inner wall of the mounting frame through the eccentric rod. The drive frame drives the end of the drive rod connected to it to move. The drive rod drives the locking rod to move into the U-shaped plate through the connecting shaft, so that the locking rod drives the locking block to move out of the filter screen, thereby releasing the fixation of the filter screen and realizing the disassembly of the filter screen.

[0004] The above solution also has the following technical defects: the above solution can only use the gravity of polyurethane to filter on a single filter screen. Since the device only has a filter screen in the middle, the polyurethane can only be filtered from a single filter screen, the filtration area is limited, and therefore the filtration speed is also limited. Based on this, a polyurethane resin filtration device is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a polyurethane resin filtration device that offers advantages such as convenient and efficient polyurethane filtration, thus solving the problem of low polyurethane filtration efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polyurethane resin filtration device, comprising a housing, a cover plate slidably connected to the top of the housing, a stirring and filtering mechanism provided on the bottom side of the cover plate, mounting mechanisms provided on the left and right sides of the housing, a feed pipe fixed inside the cover plate, a discharge pipe fixed at the bottom of the housing, and a valve provided on the discharge pipe;

[0007] The stirring and filtering mechanism includes a motor fixed to the top side of the cover plate. The output shaft of the motor is fixed with a rotating shaft. Multiple sets of stirring rollers are fixed to the outer surface of the rotating shaft. The stirring and filtering mechanism also includes a first circular plate fixed to the bottom of the cover plate. Four vertical plates arranged in a circular array are fixed to the bottom of the first circular plate. A second circular plate is fixed to the bottom end of the four vertical plates. Reinforcing ribs are fixed to the inner wall of the second circular plate. A fixing plate is fixed to one end of each of the four reinforcing ribs. Four first filter screens are fixed between the bottom of the first circular plate and the top of the second circular plate. Four second filter screens are fixed to the inner wall of the second circular plate.

[0008] Furthermore, the mounting mechanism includes two mounting plates fixed to the left and right ends of the housing. A limit rod is slidably connected inside the mounting plate. A movable plate is fixed to the outer surface of the limit rod. A spring is sleeved on the outer surface of the limit rod. A handle is fixed to the end of the limit rod away from the housing. The mounting mechanism also includes two connecting plates fixed to the bottom side of the cover plate. Two connecting grooves are opened on the top of the housing, and the connecting plates are located in the connecting grooves.

[0009] Furthermore, the first circular plate has an annular cross-section, and the second circular plate has a U-shaped longitudinal section.

[0010] Furthermore, the left and right sides of the first filter screen are fixed to the corresponding side of the vertical plate, and the second filter screen is fixed to the side of the corresponding reinforcing rib and the fixing plate.

[0011] Furthermore, a bearing seat is fixed to the top side of the fixed plate, and the bottom end of the rotating shaft rotates within the bearing seat.

[0012] Furthermore, through holes are provided at both the left and right ends of the housing, and the through holes are connected to the connecting groove.

[0013] Furthermore, a limiting hole is formed inside the connecting plate, and the limiting rod abuts against the limiting hole.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The polyurethane resin filtration device features a stirring and filtering mechanism on the cover plate. This allows the polyurethane to be filtered out through the second filter screen under the centrifugal force generated by the rotation of the stirring roller, while simultaneously being filtered out through the first filter screen under its own gravity. This improves the filtration efficiency of the polyurethane. Furthermore, the installation mechanism on the housing allows the stirring and filtering mechanism to be easily removed for cleaning without the need for screws or tools such as screwdrivers for disassembly. Attached Figure Description

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

[0017] Figure 2 This is a schematic diagram of the cover plate and stirring and filtering mechanism of this utility model;

[0018] Figure 3 This is a schematic diagram of the stirring and filtering mechanism of this utility model;

[0019] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0020] In the diagram: 1. Casing; 2. Cover plate; 300. Stirring and filtering mechanism; 301. Motor; 302. Rotating shaft; 303. Stirring rod; 304. First circular plate; 305. Vertical plate; 306. Second circular plate; 307. Reinforcing rib; 308. Fixing plate; 309. First filter screen; 310. Second filter screen; 400. Mounting mechanism; 401. Mounting plate; 402. Limiting rod; 403. Moving plate; 404. Spring; 405. Handle; 406. Connecting plate; 5. Feed pipe; 6. Discharge pipe; 7. Valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 A polyurethane resin filtration device in this embodiment includes a housing 1, a cover plate 2 slidably connected to the top of the housing 1, a stirring and filtering mechanism 300 provided on the bottom side of the cover plate 2, an installation mechanism 400 provided on the left and right sides of the housing 1, a feed pipe 5 fixed inside the cover plate 2, a discharge pipe 6 fixed at the bottom of the housing 1, and a valve 7 provided on the discharge pipe 6.

[0023] In this embodiment, the cover plate 2 is used to be installed together with the housing 1 to form a closed space, the stirring and filtering mechanism 300 is used to filter polyurethane, and the installation mechanism 400 is used to facilitate the removal, cleaning and reinstallation of the stirring and filtering mechanism 300.

[0024] It should be noted that the feed pipe 5 and the discharge pipe 6 are used for adding and discharging polyurethane, respectively, and the valve 7 is used to control the inflow and outflow of polyurethane.

[0025] Please see Figure 1-3 To facilitate efficient mixing of polyurethane, the mixing and filtering mechanism 300 in this embodiment includes a motor 301 fixed to the top side of the cover plate 2. A rotating shaft 302 is fixed to the output shaft of the motor 301. Multiple sets of mixing rollers 303 are fixed to the outer surface of the rotating shaft 302. The mixing and filtering mechanism 300 also includes a first circular plate 304 fixed to the bottom of the cover plate 2. The first circular plate 304 has an annular cross-section. Four vertical plates 305 arranged in a circular array are fixed to the bottom of the first circular plate 304. A second circular plate 306 is fixed to the bottom end of the four vertical plates 305. The second circular plate 306 has a U-shaped longitudinal section. The inner wall of the two circular plates 306 is fixed with reinforcing ribs 307. The corresponding ends of the four reinforcing ribs 307 are fixed with fixing plates 308. The top side of the fixing plate 308 is fixed with a bearing seat. The bottom end of the rotating shaft 302 rotates in the bearing seat. Four first filter screens 309 are fixed between the bottom of the first circular plate 304 and the top of the second circular plate 306. The left and right sides of the first filter screens 309 are fixed with the corresponding sides of the vertical plate 305. The inner wall of the second circular plate 306 is fixed with four second filter screens 310. The second filter screens 310 are fixed with the corresponding reinforcing ribs 307 and the sides of the fixing plate 308.

[0026] In this embodiment, the stirring and filtering mechanism 300 can drive the rotating shaft 302 to rotate by rotating the output shaft of the motor 301. The rotating shaft 302 is used to drive the stirring rod 303 to rotate. The centrifugal force generated by the rotation of the stirring rod 303 can cause the polyurethane to be filtered out from the first filter screen 309. Under the action of gravity, the polyurethane can be filtered out from the second filter screen 310.

[0027] It should be noted that the reinforcing rib 307 is used to fix the fixing plate 308 to the second circular plate 306, the vertical plate 305 is used to fix the first circular plate 304 to the second circular plate 306, and the fixing plate 308 is used to support the rotating shaft 302.

[0028] Please see Figure 1 and Figure 4To facilitate the removal and cleaning of the stirring and filtering mechanism 300, the installation mechanism 400 in this embodiment includes two mounting plates 401 fixed to the left and right ends of the housing 1. A limiting rod 402 is slidably connected inside the mounting plate 401. A movable plate 403 is fixed to the outer surface of the limiting rod 402. A spring 404 is sleeved on the outer surface of the limiting rod 402. A handle 405 is fixed to the end of the limiting rod 402 away from the housing 1. The installation mechanism 400 also includes two connecting plates 406 fixed to the bottom side of the cover plate 2. Two connecting grooves are opened on the top of the housing 1. The connecting plates 406 are located in the connecting grooves. Through holes are opened at both ends of the housing 1. The through holes are connected to the connecting grooves. A limiting hole is opened inside the connecting plate 406. The limiting rod 402 abuts against the limiting hole.

[0029] In this embodiment, the installation mechanism 400 fixes the connecting plate 406 by abutting the limiting rod 402 in the limiting hole, thereby fixing the cover plate 2 on the housing 1. When the limiting rod 402 moves, it can drive the moving plate 403 to move. The moving plate 403 is used to compress the spring 404, and the spring 404 is used to restore its deformation and drive the limiting rod 402 to reset.

[0030] It should be noted that the through hole allows the limiting rod 402 to easily enter the limiting groove, and the handle 405 is used to facilitate pulling the limiting rod 402 to move it.

[0031] It is understood that the control method of this application is controlled by a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this application is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0032] The working principle of the above embodiments is as follows:

[0033] When this device is in operation, polyurethane is added into the housing 1 through the feed pipe 5. The motor 301 is started, and its output shaft drives the rotating shaft 302 to rotate. The rotating shaft 302 drives the stirring roller 303 to rotate. The stirring roller 303 stirs the polyurethane while generating centrifugal force, causing the polyurethane to be filtered out through the first filter screen 309. Under the action of gravity, the polyurethane is filtered out through the second filter screen 310. After filtration, the valve 7 is opened, allowing the filtered polyurethane to be discharged through the discharge pipe 6. When cleaning the stirring and filtering mechanism 300 is required, pull... Handle 405 moves the limiting rod 402, which in turn moves the moving plate 403. The moving plate 403 compresses the spring 404, causing the limiting rod 402 to leave the limiting hole. Then, the cover plate 2 and the stirring and filtering mechanism 300 are removed together for cleaning. After cleaning, the connecting plate 406 is placed into the connecting groove. Handle 405 is released, and the spring 404 returns to its original shape, causing the moving plate 403 and the limiting rod 402 to reset. The limiting rod 402 then enters the limiting hole, completing the installation of the stirring and filtering mechanism 300.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtering device for polyurethane resins comprising a casing (1), characterized in that: The top of the shell (1) is slidably connected with a cover plate (2), the bottom side of the cover plate (2) is provided with a stirring and filtering mechanism (300), the left and right sides of the shell (1) are provided with mounting mechanisms (400), the inside of the cover plate (2) is fixed with a feeding pipe (5), the bottom of the shell (1) is fixed with a discharging pipe (6), and the discharging pipe (6) is provided with a valve (7). The stirring and filtering mechanism (300) comprises a motor (301) fixed on the top side of the cover plate (2), the output shaft of the motor (301) is fixed with a rotating shaft (302), the outer surface of the rotating shaft (302) is fixed with a plurality of stirring rods (303), and the stirring and filtering mechanism (300) further comprises a first circular plate (304) fixed on the bottom of the cover plate (2), the bottom of the first circular plate (304) is fixed with four vertical plates (305) arranged in a circular array, the bottom ends of the four vertical plates (305) are fixed with a second circular plate (306), the inner wall of the second circular plate (306) is fixed with reinforcing ribs (307), one end of each of the four reinforcing ribs (307) is fixed with a fixed plate (308), and four first filter screens (309) are fixed between the bottom of the first circular plate (304) and the top of the second circular plate (306).

2. A filter device for polyurethane resins according to claim 1, characterized in that: The mounting mechanism (400) comprises two mounting plates (401) fixed on the left and right ends of the shell (1), the inside of the mounting plate (401) is slidably connected with a limiting rod (402), the outer surface of the limiting rod (402) is fixed with a moving plate (403), the outer surface of the limiting rod (402) is sleeved with a spring (404), one end of the limiting rod (402) away from the shell (1) is fixed with a handle (405), and the mounting mechanism (400) further comprises two connecting plates (406) fixed on the bottom side of the cover plate (2), two connecting grooves are formed in the top of the shell (1), and the connecting plates (406) are located in the connecting grooves.

3. A filter device for polyurethane resins according to claim 1, characterized in that: The first circular plate (304) is in a circular ring shape in cross section, and the second circular plate (306) is in a U-shaped in longitudinal section.

4. The filter device for polyurethane resin according to claim 1, characterized by: The left and right sides of the first filter screen (309) are fixed with the corresponding sides of the vertical plates (305), and the second filter screen (310) is fixed with the sides of the corresponding reinforcing ribs (307) and fixed plates (308).

5. The filter device for polyurethane resin according to claim 1, characterized by: The top side of the fixed plate (308) is fixed with a bearing seat, and the bottom end of the rotating shaft (302) rotates in the bearing seat.

6. A filter device for polyurethane resins according to claim 2, characterized in that: The left and right ends of the shell (1) are both provided with through holes, and the through holes are in communication with the connecting grooves.

7. A filter device for polyurethane resins according to claim 2, characterized in that: The inside of the connecting plate (406) is provided with a limiting hole, and the limiting rod (402) abuts in the limiting hole.

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