A feeding device for polyurethane prepolymer production

Abstract

The utility model provides a kind of feeding device for polyurethane prepolymer production, it is related to feeding device technical field, including tank and feeding tank, the surface of the tank is fixedly installed with feeding tank, feeding pipe is installed between the feeding tank and the tank, cleaning mechanism is installed in the inside of the tank, motor is installed in the inside of the tank, the output end of the motor is installed with stirring rod, the top end of the stirring rod is installed with top cover, the top surface of the top cover is installed with insert block, clamping groove is set in the surface of the top cover, annular groove is set between the top cover and the tank, detachable cleaning mechanism is set, by latch, tension spring and pull plate, it is convenient to disassemble cleaning mechanism, simultaneously, by clamping block, clamping groove, insert block and slot, stirring rod and cleaning brush can be connected, when motor drives stirring rod to rotate, cleaning brush can be driven to clean tank inner wall synchronously, without stopping machine manual cleaning, production efficiency can be improved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of feeding device technology, and in particular to a feeding device for the production of polyurethane prepolymer. Background Technology

[0002] Polyurethane prepolymer is an important intermediate in rubber production. It is produced by the reaction of polyols and isocyanates and is widely used in elastomers, foam materials, coatings, adhesives and other fields. The feeding device is particularly important in the production of polyurethane prepolymer. It must meet the requirements of accurate feeding, sealing and moisture protection, and uniform mixing, which directly affects product quality and production safety.

[0003] Chinese Patent Publication No. CN220531519U discloses a catalyst feeding tank for the production of polyurethane prepolymer, including a stirring feeding tank for feeding the catalyst. A stirring and feeding assembly is fixedly installed inside the stirring and feeding assembly. A pressure detection assembly is fixedly installed inside the stirring and feeding assembly. The pressure detection assembly is signal-connected to a control main board. The control main board is signal-connected to a screw feeder. A catalyst storage tank is fixedly installed at the bottom of the screw feeder. A gravity detection structure is fixedly installed at the bottom of the catalyst storage tank. The gravity detection structure is signal-connected to an audible and visual alarm. A feeding rack is fixedly installed at the discharge end of the screw feeder. A feeding baffle plate is fixedly installed at one end of the feeding rack.

[0004] In this existing design, although a pressure detection structure that rotates with the stirring structure is used to detect pressure by utilizing the pressure generated between the stirring structure and the catalyst during the stirring process, the remaining amount of catalyst inside the feeding tank is judged based on the location of the pressure detection response, and the remaining amount of catalyst inside the feeding tank is replenished based on the detection results, which can effectively ensure the sufficiency of catalyst inside the feeding tank and ensure the stability of catalyst use during the production of polyurethane prepolymer, the device lacks an internal cleaning function. Residual catalyst easily accumulates on the inner wall of the tank, requiring periodic shutdown for manual cleaning, which not only reduces production efficiency but may also cause cross-contamination due to incomplete cleaning. In contrast, most common feeding devices with cleaning functions have their cleaning mechanisms fixed inside the tank, making them inconvenient to disassemble and clean.

[0005] To address this issue, a feeding device for polyurethane prepolymer production was designed. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a feeding device for polyurethane prepolymer production, which features self-cleaning inside the tank and an easy-to-disassemble and clean structure.

[0007] The present invention adopts the following technical solution: a feeding device for polyurethane prepolymer production, comprising a tank and a feeding box, wherein the feeding box is fixedly installed on the surface of the tank, a feeding pipe is installed between the feeding box and the tank, a cleaning mechanism is installed inside the tank, a motor is installed inside the tank, a stirring rod is installed at the output end of the motor, a top cover is installed at the top of the stirring rod, an insert is installed on the top surface of the top cover, a slot is formed on the surface of the top cover, and an annular groove is formed between the top cover and the tank;

[0008] The cleaning mechanism includes a circular plate, a cleaning brush, and a locking block. The cleaning brush is inserted into the inside of the tank through the annular groove. The circular plate is located on the top of the tank. The locking block is installed on the bottom surface of the circular plate. A fixing block is installed on the top surface of the circular plate. A pin is inserted into the inside of the fixing block. A tension spring is sleeved on the surface of the pin. A pull plate is installed at one end of the pin. The locking block and the locking groove are engaged.

[0009] In a preferred embodiment of the feeding device for producing polyurethane prepolymer according to this utility model, both the card block and the card slot are cross-shaped.

[0010] As a preferred embodiment of the feeding device for producing polyurethane prepolymer according to this utility model, there are two sets of fixing blocks, and the two sets of fixing blocks are symmetrically distributed on the top surface of the circular plate.

[0011] As a preferred embodiment of the feeding device for polyurethane prepolymer production according to this utility model, the top surface of the circular plate is provided with a slot, and the shape and size of the slot and the insert are matched.

[0012] In a preferred embodiment of the feeding device for producing polyurethane prepolymer according to this utility model, the insert block is fixed by the pin and the slot.

[0013] In a preferred embodiment of the feeding device for producing polyurethane prepolymer according to this utility model, one end of the tension spring is fixedly connected to the side of the fixing block, and the other end of the tension spring is fixedly connected to the side of the pull plate.

[0014] As a preferred embodiment of the feeding device for producing polyurethane prepolymer according to this utility model, the surface of the pull plate is provided with a groove, and the groove is arc-shaped.

[0015] As a preferred embodiment of the feeding device for polyurethane prepolymer production according to this utility model, two sets of handles are installed on the top surface of the circular plate, and the two sets of handles are symmetrically installed on the top surface of the circular plate.

[0016] As a preferred embodiment of the feeding device for polyurethane prepolymer production according to this utility model, a reinforcing rib is installed between the feeding box and the tank.

[0017] Compared with the prior art, the advantages and positive effects of this utility model are as follows: a detachable cleaning mechanism is provided. The top cover and the circular plate can be connected by a locking block and a locking slot. The circular plate can be fixed above the top cover by a locking pin, a tension spring, and a pull plate, which facilitates the disassembly of the cleaning mechanism. At the same time, the stirring rod and the cleaning brush can be connected. When the motor drives the stirring rod to rotate, it can drive the cleaning brush to clean the inner wall of the tank simultaneously. There is no need to stop the machine for manual cleaning, which can improve production efficiency to a certain extent. At the same time, it is easy to disassemble and clean the cleaning mechanism, avoiding cross-contamination. Attached Figure Description

[0018] Figure 1 This utility model provides a schematic diagram of a feeding device for the production of polyurethane prepolymer;

[0019] Figure 2 A cross-sectional view of a feeding device for producing polyurethane prepolymer is provided for this utility model;

[0020] Figure 3 This utility model provides a partial schematic diagram of a feeding device for the production of polyurethane prepolymer;

[0021] Figure 4 This utility model proposes a feeding device for the production of polyurethane prepolymer. Figure 3 Enlarged view of point A in the middle;

[0022] Figure 5 A bottom view of the cleaning mechanism of a feeding device for polyurethane prepolymer production is provided for this utility model.

[0023] Figure 6 A schematic diagram of a cleaning mechanism for a feeding device used in the production of polyurethane prepolymer is provided for this utility model.

[0024] Figure 7 This utility model proposes a feeding device for the production of polyurethane prepolymer. Figure 6 Enlarged view of section B in the middle.

[0025] Legend:

[0026] 1. Tank body; 2. Feeding box; 3. Feeding pipe; 4. Cleaning mechanism; 5. Motor; 6. Stirring rod; 7. Top cover; 8. Insert block; 9. Slot; 10. Annular groove; 401. Circular plate; 402. Cleaning brush; 403. Slot block; 404. Fixing block; 405. Pin; 406. Tension spring; 407. Pull plate; 408. Slot; 409. Groove; 11. Handle; 12. Reinforcing rib. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] Example 1

[0030] In the existing technology, the catalyst feeding tank for polyurethane prepolymer production includes a tank body 1 and a feeding box 2. This feeding device also has a stirring and feeding assembly fixedly installed inside the stirring and feeding tank, a pressure detection assembly fixedly installed inside the stirring and feeding assembly, a control main board connected to the pressure detection assembly, a screw feeder fixedly connected to the control main board, a catalyst storage box fixedly installed at the bottom of the screw feeder, a gravity detection structure fixedly installed at the bottom of the catalyst storage box, an audible and visual alarm connected to the gravity detection structure, and a replenishment rack fixedly installed at the discharge end of the screw feeder. A replenishment baffle plate is fixedly installed at one end of the replenishment rack. By setting a pressure detection structure that rotates with the stirring structure, pressure detection is achieved by utilizing the pressure generated between the stirring structure and the catalyst during the stirring process. The remaining amount of catalyst inside the feeding tank is judged based on the position of the pressure detection response, and the remaining amount of catalyst inside the feeding tank is replenished based on the detection result. This can effectively ensure the sufficiency of catalyst inside the feeding tank and ensure the stability of catalyst use during the production of polyurethane prepolymer.

[0031] This application incorporates the aforementioned prior art, such as Figures 1 to 7 As shown, this utility model provides a technical solution: a feeding device for the production of polyurethane prepolymer, wherein a feeding box 2 is fixedly installed on the surface of the tank 1, a feeding pipe 3 is installed between the feeding box 2 and the tank 1, a cleaning mechanism 4 is installed inside the tank 1, a motor 5 is installed inside the tank 1, a stirring rod 6 is installed at the output end of the motor 5, a top cover 7 is installed at the top of the stirring rod 6, an insert 8 is installed on the top surface of the top cover 7, a slot 9 is opened on the surface of the top cover 7, and an annular groove 10 is opened between the top cover 7 and the tank 1;

[0032] The cleaning mechanism 4 includes a circular plate 401, a cleaning brush 402, and a locking block 403. The cleaning brush 402 is inserted into the inside of the tank 1 through the annular groove 10. The circular plate 401 is set on the top of the tank 1. The locking block 403 is installed on the bottom surface of the circular plate 401. A fixing block 404 is installed on the top surface of the circular plate 401. A pin 405 is inserted into the inside of the fixing block 404. A tension spring 406 is sleeved on the surface of the pin 405. A pull plate 407 is installed at one end of the pin 405. The locking block 403 and the locking groove 9 are engaged.

[0033] In this implementation plan: a detachable cleaning mechanism 4 is provided. The top cover 7 and the circular plate 401 can be connected by a locking block 403 and a locking groove 9. An insert block 8 and a slot 408 are provided. The circular plate 401 can be fixed above the top cover 7 by a pin 405, a tension spring 406, and a pull plate 407. At the same time, simply pulling the pull plate 407 can release the fixing of the insert block 8, making it easy to disassemble the cleaning mechanism 4. The stirring rod 6 and the cleaning brush 402 can be connected. The cleaning brush 402 is in contact with the inner wall of the tank 1. When the motor 5 drives the stirring rod 6 to rotate, it can drive the cleaning brush 402 to clean the inner wall of the tank 1 simultaneously. There is no need to stop the machine for manual cleaning, which can improve production efficiency to a certain extent. At the same time, it is easy to disassemble and clean the cleaning mechanism 4, avoiding cross-contamination. A sealing ring is installed on the bottom surface of the circular plate 401 that contacts the annular groove 10 to prevent impurities from entering the tank 1 through the annular groove 10.

[0034] Combining the above solutions:

[0035] Furthermore:

[0036] like Figures 3 to 5 As shown;

[0037] To facilitate the engagement between the card block 403 and the card slot 9, in an optional embodiment, both the card block 403 and the card slot 9 are cross-shaped.

[0038] In this embodiment, both the card block 403 and the card slot 9 are set to a cross shape. When the cleaning mechanism 4 is installed, the card block 403 and the card slot 9 on the bottom surface of the circular plate 401 are simply engaged, so that when the motor 5 drives the stirring rod 6 to rotate, the circular plate 401 will rotate synchronously, thereby achieving the effect of synchronous cleaning during the working process and avoiding affecting production efficiency.

[0039] Combining the above solutions:

[0040] Furthermore:

[0041] like Figures 6 to 7 As shown;

[0042] To facilitate the installation of the pin 405, in an optional embodiment, there are two sets of fixing blocks 404, which are symmetrically distributed on the top surface of the circular plate 401.

[0043] In this embodiment, two sets of fixing blocks 404 are provided and are symmetrically distributed on the top surface of the circular plate 401. When fixing the circular plate 401 and the top cover 7, simply insert the locking block 403 into the locking groove 9 and insert the plug 8 into the slot 408. Then, the plug 8 can be fixed by the pin 405, thereby fixing the circular plate 401 above the top cover 7.

[0044] Combining the above solutions:

[0045] Furthermore:

[0046] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown;

[0047] In order to fix the circular plate 401 and the top cover 7, in an optional embodiment, the top surface of the circular plate 401 is provided with a slot 408, and the slot 408 and the insert 8 are matched in shape and size.

[0048] In this embodiment: a slot 408 is opened on the top surface of the circular plate 401, and the slot 408 and the plug 8 are set to match the shape and size. When fixing the circular plate 401, the plug 8 is simply inserted into the slot 408, and then the plug 8 is fixed by the pin 405.

[0049] Combining the above solutions:

[0050] Furthermore:

[0051] like Figures 6 to 7 As shown;

[0052] To facilitate disassembly of the cleaning mechanism 4, in an optional embodiment, the insert 8 is secured by a pin 405 and a slot 408.

[0053] In this embodiment, the insert block 8 is fixed by the pin 405 and the slot 408. When the cleaning mechanism 4 needs to be disassembled, simply pull the pull plate 407 manually. The pull plate 407 moves the pin 405, and the pin 405 can be disengaged from the insert block 8. At this time, the insert block 8 can be released from its fixed position, and the cleaning mechanism 4 can be disassembled.

[0054] Combining the above solutions:

[0055] Furthermore:

[0056] like Figures 6 to 7 As shown;

[0057] In an optional embodiment, to enable the pin 405 to automatically reset, one end of the tension spring 406 is fixedly connected to the side of the fixing block 404, and the other end of the tension spring 406 is fixedly connected to the side of the pull plate 407.

[0058] In this embodiment: one end of the tension spring 406 is fixedly connected to the side of the fixing block 404, and the other end of the tension spring 406 is fixedly connected to the side of the pull plate 407. When installing the cleaning mechanism 4, simply insert the insert block 8 into the slot 408, and then release the hand that pulls the pull plate 407. Under the action of the tension spring 406 itself, the pin 405 can be inserted into the insert block 8 to fix it.

[0059] Combining the above solutions:

[0060] Furthermore:

[0061] like Figures 6 to 7 As shown;

[0062] To facilitate pulling the pull plate 407, in an optional embodiment, the surface of the pull plate 407 is provided with a groove 409, which is arc-shaped.

[0063] In this embodiment, a groove 409 is formed on the surface of the pull plate 407, and the groove 409 is arc-shaped. When the pull plate 407 is pulled, the hand can be inserted into the groove 409, which makes it convenient to pull the pull plate 407 and can improve the efficiency of installation and disassembly to a certain extent.

[0064] Combining the above solutions:

[0065] Furthermore:

[0066] like Figure 6 As shown;

[0067] To facilitate the handling of the circular plate 401, in an optional embodiment, two sets of handles 11 are installed on the top surface of the circular plate 401, and the two sets of handles 11 are symmetrically installed on the top surface of the circular plate 401.

[0068] In this embodiment, two sets of handles 11 are installed on the top surface of the circular plate 401. After the circular plate 401 is disassembled, the circular plate 401 can be lifted by the handles 11 to easily remove the cleaning brush 402 from the tank 1.

[0069] Combining the above solutions:

[0070] Furthermore:

[0071] like Figures 1 to 2 As shown;

[0072] To improve the fixing effect of the feeding box 2, in an optional embodiment, a reinforcing rib 12 is installed between the feeding box 2 and the tank body 1.

[0073] In this embodiment, installing reinforcing ribs 12 between the feeding box 2 and the tank body 1 can improve the stability of the feeding box 2.

[0074] Working principle: During use, the required reagents are poured into the feeding box 2, and then the motor 5 is activated. The motor 5 drives the stirring rod 6 to rotate, and at the same time, the stirring rod 6 drives the top cover 7 to rotate. Since the top surface of the top cover 7 is equipped with the insert block 8, and the insert block 8 is fixed in the slot 408, and the locking block 403 is engaged in the slot 9, the rotation of the top cover 7 drives the circular plate 401 to rotate synchronously. At the same time, the circular plate 401 drives the cleaning brush 402 on its bottom surface to rotate in the annular groove 10. The cleaning brush 402 can clean the inner wall of the tank 1. When it is necessary to clean the cleaning brush 402, the pull plate 407 is manually pulled. The pull plate 407 drives the pin 405 to move, and the pin 405 gradually disengages from the insert block 8. At the same time, the pull plate 407... The tension spring 406 is stretched until the pin 405 is completely disengaged from the insert block 8. At this time, the insert block 8 can be released from its limit. By pulling the handle 11, the handle 11 moves the circular plate 401. The circular plate 401 then moves the cleaning brush 402 out of the tank 1. The cleaning brush 402 can then be cleaned. After cleaning, the cleaning brush 402 is inserted into the tank 1 through the annular groove 10. The locking block 403 and the locking groove 9 are aligned, and the insert block 8 is inserted into the slot 408. Then the pull plate 407 is released. Due to the tension of the tension spring 406, the pull plate 407 is moved. At the same time, the pull plate 407 moves the pin 405 until the pin 405 passes through the insert block 8. At this time, the circular plate 401 can be fixed above the top cover 7.

[0075] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A feeding device for producing polyurethane prepolymer, comprising a tank (1) and a feeding box (2), characterized in that: A feeding box (2) is fixedly installed on the surface of the tank (1). A feeding pipe (3) is installed between the feeding box (2) and the tank (1). A cleaning mechanism (4) is installed inside the tank (1). A motor (5) is installed inside the tank (1). A stirring rod (6) is installed at the output end of the motor (5). A top cover (7) is installed at the top of the stirring rod (6). An insert (8) is installed on the top surface of the top cover (7). A slot (9) is opened on the surface of the top cover (7). An annular groove (10) is opened between the top cover (7) and the tank (1). The cleaning mechanism (4) includes a circular plate (401), a cleaning brush (402), and a locking block (403). The cleaning brush (402) is inserted into the inside of the tank (1) through the annular groove (10). The circular plate (401) is located on the top of the tank (1). The locking block (403) is installed on the bottom surface of the circular plate (401). A fixing block (404) is installed on the top surface of the circular plate (401). A pin (405) is inserted into the inside of the fixing block (404). A tension spring (406) is sleeved on the surface of the pin (405). A pull plate (407) is installed at one end of the pin (405). The locking block (403) and the locking groove (9) are engaged.

2. The feeding device for polyurethane prepolymer production according to claim 1, characterized in that: Both the card block (403) and the card slot (9) are cross-shaped.

3. The feeding device for polyurethane prepolymer production according to claim 2, characterized in that: There are two sets of the fixing blocks (404), and the two sets of fixing blocks (404) are symmetrically distributed on the top surface of the circular plate (401).

4. The feeding device for polyurethane prepolymer production according to claim 3, characterized in that: The top surface of the circular plate (401) is provided with a slot (408), and the slot (408) and the insert (8) are matched in shape and size.

5. The feeding device for polyurethane prepolymer production according to claim 4, characterized in that: The plug (8) is fixed by the pin (405) and the slot (408).

6. The feeding device for polyurethane prepolymer production according to claim 5, characterized in that: One end of the tension spring (406) is fixedly connected to the side of the fixing block (404), and the other end of the tension spring (406) is fixedly connected to the side of the pull plate (407).

7. The feeding device for polyurethane prepolymer production according to claim 6, characterized in that: The surface of the pull plate (407) is provided with a groove (409), and the groove (409) is arc-shaped.

8. The feeding device for polyurethane prepolymer production according to claim 7, characterized in that: Two sets of handles (11) are installed on the top surface of the circular plate (401), and the two sets of handles (11) are symmetrically installed on the top surface of the circular plate (401).

9. The feeding device for polyurethane prepolymer production according to claim 8, characterized in that: A reinforcing rib (12) is installed between the feeding box (2) and the tank (1).

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