Reaction kettle suitable for polyurethane production

Abstract

The utility model relates to the chemical field of high polymer materials, in particular to a reaction kettle suitable for polyurethane production, which comprises a reaction kettle, a mounting plate, a connecting block, a missing gear, a cover plate, a transmission gear, a first motor and the like, mounting plates are fixedly connected to the top of the reaction kettle, the mounting plates are divided into an upper mounting plate and a lower mounting plate, four sliding grooves are formed in the top mounting plate, four arc-shaped racks are slidably connected to the bottom mounting plate, the arc-shaped racks are annularly distributed, and connecting blocks are fixedly connected to the tops of the arc-shaped racks. The first motor drives the transmission gear and the arc-shaped rack to transmit and drives the missing gear to rotate, so that the cover plate is opened and closed, quantitative and controllable feeding of raw materials is achieved, the rapid exothermic reaction is effectively inhibited, heat accumulation is avoided, and it is guaranteed that the polyurethane reaction is conducted stably.

Description

Technical Field

[0001] This utility model relates to the field of polymer materials and chemicals, and in particular to a reaction vessel suitable for polyurethane production. Background Technology

[0002] Polyurethane, as a high-performance polymer material, is widely used in foam plastics, elastomers, adhesives, and other fields. Its production process centers on the stepwise addition polymerization reaction of isocyanates and polyols. The production of polyurethane requires heating the reaction vessel. In the industrial production of polyurethane, the heating of the reaction vessel is not a simple temperature control operation, but directly affects product quality.

[0003] In polyurethane production, reaction vessels have significant limitations in controlling the feed rate to avoid rapid exothermic reactions that lead to heat accumulation. Feeding to reaction vessels largely relies on manual valve operation. When the temperature inside the vessel exceeds the process limit due to intensified reaction, manual adjustment of valves or pump speed is required. This process is significantly delayed, and excessive feeding will further increase exothermic reactions, leading to heat accumulation. Polyurethane reactions are extremely sensitive to feed rate; even small fluctuations in the rate can cause drastic changes in local temperature. Utility Model Content

[0004] In order to overcome the problems existing in the prior art, the present invention provides a reaction vessel suitable for polyurethane production that is easy to control in terms of material feeding.

[0005] The technical solution is as follows: A reaction vessel suitable for polyurethane production includes a reaction vessel, a mounting plate, a connecting block, a gear, a cover plate, a transmission gear, a first motor, a storage tank, and a sealing cover. The top of the reaction vessel is fixedly connected to the mounting plate, which is divided into upper and lower sections. The upper mounting plate has four sliding grooves, and the lower mounting plate has four arc-shaped racks slidably connected to it. The arc-shaped racks are arranged in a ring, and a connecting block is fixedly connected to the top of each rack. The four arc-shaped racks are connected end-to-end through the connecting block to form a ring structure with evenly distributed teeth on the inner side. The connecting block slides on the top mounting plate. Inside the slide groove of the plate, a rotatable gear is connected to the mounting plate. The rotatable gear meshes with the corresponding arc-shaped rack. Each rotatable gear is fixedly connected to a cover plate, which is set to correspond to the discharge port of the storage tank. When the rotatable gear rotates, it drives the cover plate to open and close, controlling the discharge. A transmission gear is rotatably connected to the top of the reactor. One of the arc-shaped racks has teeth on both the inner and outer sides. The outer teeth mesh with the transmission gear. A first motor is mounted on the mounting plate. The transmission gear is connected to the output shaft of the first motor. A storage tank is fixedly connected to the top mounting plate. The top of the storage tank is equipped with a sealing cover.

[0006] Furthermore, it also includes a second motor, a stirring rod, a sleeve, a guide rod, a limiting rod, a pull plate, a locking block, and a return spring. The second motor is fixedly connected inside the sealing cover, and the stirring rod is fixedly connected to the end of the output shaft of the second motor. The stirring rod is inside the storage tank. Sleeves are fixedly connected to both the left and right sides of the storage tank. Guide rods are slidably connected inside the sleeves. The top of the guide rods is fixedly connected to the sealing cover. The upper and lower ends of the guide rods are provided with locking grooves. Two limiting rods are fixedly connected to both the left and right sides of the storage tank. Pull plates are slidably connected to the limiting rods. Locking blocks are fixedly connected to the pull plates. A return spring is sleeved on the limiting rod. One end of the return spring is fixedly connected to the limiting rod, and the other end of the return spring is fixed to the pull plate. The locking block engages with the locking groove on the guide rod under the action of the return spring, restricting the movement of the guide rod.

[0007] Furthermore, it also includes a glove; a handle is fixedly connected to the pull plate, and a glove is provided on the handle.

[0008] Furthermore, it also includes a sealing gasket, which is fixedly connected to the cover plate.

[0009] Furthermore, it also includes an observation window. The storage tank has a transparent observation window made of corrosion-resistant glass, which is used to observe the remaining material and the mixing status inside.

[0010] Furthermore, it also includes a protective cover. A protective cover is provided on the top of the mounting plate. The protective cover serves to prevent dust and provide safety protection. The first motor is fixedly connected to the protective cover.

[0011] The beneficial effects are as follows: 1. The transmission gear and the arc rack are driven by the first motor to drive the missing gear to rotate, so that the cover plate can be opened and closed, realizing quantitative and controllable feeding of raw materials, effectively suppressing rapid exothermic reaction, avoiding heat accumulation, and ensuring the stable progress of polyurethane reaction.

[0012] 2. By controlling the separation and engagement of the locking block and the locking slot through the pull plate, the sealing cover can be opened and closed conveniently and fixed securely, which facilitates the precise addition of raw materials, ensures the sealing of the storage tank, prevents the volatilization of raw materials or the entry of impurities, and ensures the stability of the material environment when the second motor drives the stirring rod to stir.

[0013] 3. The protective cover protects the transmission components, preventing dust and accidental contact, thus ensuring that gears and other mechanisms are clean and free from jamming, and reducing operational safety risks. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the mounting plate, arc-shaped rack, and connecting block of this utility model.

[0016] Figure 3This is a three-dimensional structural diagram of the missing gear, cover plate, and transmission gear of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the storage bucket, sealing cover, and stirring rod of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the sleeve, guide rod, and slot of this utility model.

[0019] Component names and serial numbers in the diagram: 1_Reaction vessel, 2_Mounting plate, 3_Arc rack, 4_Connecting block, 5_Missing gear, 51_Cover plate, 6_Transmission gear, 7_First motor, 8_Storage tank, 9_Sealing cover, 10_Second motor, 11_Stirring rod, 12_Sleeve, 13_Guide rod, 131_Slot, 14_Limiting rod, 15_Pull plate, 16_Clamping block, 17_Reset spring, 18_Glove, 19_Sealing gasket, 20_Observation window, 21_Protective cover. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0021] Example: A reaction vessel suitable for polyurethane production, such as Figure 1-3 As shown, the assembly includes a reaction vessel 1, a mounting plate 2, a connecting block 4, a gear 5, a cover plate 51, a transmission gear 6, a first motor 7, a storage tank 8, and a sealing cover 9. The top of the reaction vessel 1 is fixedly connected to the mounting plate 2, which is divided into upper and lower sections. The upper mounting plate 2 has four sliding grooves, and the lower mounting plate 2 has four arc-shaped racks 3 slidably connected to it. The arc-shaped racks 3 are arranged in a ring, and the top of each arc-shaped rack 3 is fixedly connected to the connecting block 4. The four arc-shaped racks 3 are connected end to end by the connecting block 4 to form a ring structure with evenly distributed teeth on the inner side. The connecting block 4 slides within the sliding grooves of the upper mounting plate 2. The gear 51 is rotatably connected to the mounting plate 2. A missing gear 5 is provided, which meshes with the corresponding arc-shaped rack 3. Each missing gear 5 is fixedly connected to a cover plate 51, which is set with the discharge port of the storage tank 8. When the missing gear 5 rotates, it drives the cover plate 51 to open and close, controlling the discharge. The top of the reactor 1 is rotatably connected to the transmission gear 6. One of the arc-shaped racks 3 has teeth on both the inner and outer sides, and the outer teeth mesh with the transmission gear 6. The first motor 7 is installed on the mounting plate 2, and the transmission gear 6 is connected to the output shaft of the first motor 7. The storage tank 8 is fixedly connected to the top of the mounting plate 2, and the top of the storage tank 8 is provided with the sealing cover 9.

[0022] like Figure 2 , Figure 4 and Figure 5 As shown, it also includes a second motor 10, a stirring rod 11, a sleeve 12, a guide rod 13, a limiting rod 14, a pull plate 15, a locking block 16, and a return spring 17. The second motor 10 is fixedly connected inside the sealing cover 9. The stirring rod 11 is fixedly connected to the end of the output shaft of the second motor 10. The stirring rod 11 is inside the storage tank 8. The sleeve 12 is fixedly connected to both the left and right sides of the storage tank 8. The guide rod 13 is slidably connected inside the sleeve 12. The top of the guide rod 13 is fixedly connected to the sealing cover 9. The storage bin 8 has slots 131 at both the top and bottom. Two limiting rods 14 are fixedly connected to the left and right sides of the storage bin 8. A pull plate 15 is slidably connected to the limiting rod 14. A locking block 16 is fixedly connected to the pull plate 15. A return spring 17 is sleeved on the limiting rod 14. One end of the return spring 17 is fixedly connected to the limiting rod 14, and the other end of the return spring 17 is fixed to the pull plate 15. The locking block 16 engages with the slots 131 on the guide rod 13 under the action of the return spring 17, thus restricting the movement of the guide rod 13.

[0023] like Figure 5 As shown, it also includes a handle glove 18. A handle is fixedly connected to the pull plate 15, and the handle is provided with the handle glove 18. The handle glove 18 on the pull plate 15 can increase the friction and prevent slippage when pulling.

[0024] like Figure 3 As shown, it also includes a sealing gasket 19, which is fixedly connected to the cover plate 51.

[0025] like Figure 1 As shown, it also includes an observation window 20. The storage tank 8 has a transparent observation window 20 made of corrosion-resistant glass, which is used to observe the remaining amount of material inside and the stirring status.

[0026] like Figure 1 As shown, it also includes a protective cover 21. The protective cover 21 is provided on the top of the mounting plate 2. The protective cover 21 serves to prevent dust and provide safety protection. The first motor 7 is fixedly connected to the protective cover 21. The protective cover 21 also protects the gears, motors and other transmission components on the mounting plate 2, preventing dust or accidental contact from affecting operation.

[0027] Open the sealing cover 9; pull the pull plate 15 to separate the locking block 16 from the top locking groove 131, compressing the return spring 17. The guide rod 13 slides upward along the sleeve 12, lifting the sealing cover 9 to expose the feeding port of the storage tank 8. The locking block 16 inserts into the locking groove 131 at the bottom of the guide rod 13, restricting the movement of the guide rod 13. Add raw materials to the storage tank 8 according to the production formula. The observation window 20 of the storage tank 8 allows real-time observation of the remaining raw material. Control the feeding amount through the observation window 20 to prevent overflow. When closing the cover, pull the pull plate 15 to release the locking block. 16. Once disengaged from the bottom slot 131, the sealing cover 9 moves downward, closing the storage tank 8. At this time, the locking block 16 engages with the slot 131 at the upper end of the guide rod 13 to fix the position of the sealing cover 9, thus facilitating the addition of raw materials or cleaning of the storage tank 8. Subsequently, the second motor 10 is activated to drive the stirring rod 11 to rotate inside the storage tank 8, stirring the raw materials in the storage tank 8 to ensure uniformity and avoid affecting subsequent reactions due to uneven local concentration. The first motor 7 drives the transmission gear 6 to rotate, and the transmission gear 6 interacts with the arc-shaped gear with teeth both inside and outside. The outer teeth of the rack 3 engage, thereby driving the arc-shaped rack 3 to rotate. The four arc-shaped racks 3 are connected end to end by the connecting block 4. The top connecting block 4 slides in the groove of the top mounting plate 2. When a single arc-shaped rack 3 slides, it will drive the other arc-shaped racks 3 to move synchronously. When the arc-shaped rack 3 moves, its inner teeth engage with the teeth of the missing gear 5, driving the missing gear 5 to rotate. The cover plate 51 fixed on the missing gear 5 rotates together, and the cover plate 51 opens. The raw material in the storage tank 8 falls into the reaction vessel 1 through the discharge port. After the raw material enters the reaction vessel 1, it is stirred inside the vessel. Mixing is carried out under the action of the stirring device; when the cover plate 51 is closed, the feeding stops, and the sealing gasket 19 on the cover plate 51 fits tightly when closed, enhancing the sealing performance. Through the meshing rhythm of the missing gear 5 and the arc-shaped rack 3, the raw materials are fed intermittently and controllably, avoiding the accumulation of exothermic reaction due to rapid feeding. The feeding speed is controlled by the intermittent opening and closing movement of the cover plate 51. Combined with the pre-stirring function in the storage tank 8, the raw materials in polyurethane production are added uniformly and controllably, reducing the reaction risk caused by rapid exothermic reaction, ensuring the stability of the reaction environment, and adapting to the requirements of polyurethane production for feeding accuracy and reaction conditions.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A reaction vessel suitable for polyurethane production, characterized in that, The reactor (1) includes a reaction vessel (1), a mounting plate (2), a connecting block (4), a missing gear (5), a cover plate (51), a transmission gear (6), a first motor (7), a storage tank (8), and a sealing cover (9). The top of the reaction vessel (1) is fixedly connected to the mounting plate (2), which is divided into upper and lower parts. The upper mounting plate (2) has four grooves, and the lower mounting plate (2) has four arc-shaped racks (3) that slide on it. The arc-shaped racks (3) are arranged in a ring, and the top of the arc-shaped racks (3) is fixedly connected to the connecting block (4). The four arc-shaped racks (3) are connected end to end by the connecting block (4) to form a ring structure with evenly distributed teeth on the inner side. The connecting block (4) slides in the groove of the upper mounting plate (2). A missing gear (5) is rotatably connected to the top of the reactor (1). The missing gear (5) meshes with the corresponding arc rack (3). Each missing gear (5) is fixedly connected to a cover plate (51). The cover plate (51) is set to the discharge port of the storage tank (8). When the missing gear (5) rotates, it drives the cover plate (51) to open and close, controlling the discharge. A transmission gear (6) is rotatably connected to the top of the reactor (1). One of the arc racks (3) has teeth on both the inside and outside. The outer teeth mesh with the transmission gear (6). A first motor (7) is installed on the mounting plate (2). The transmission gear (6) is connected to the output shaft of the first motor (7). A storage tank (8) is fixedly connected to the top mounting plate (2). A sealing cover (9) is provided on the top of the storage tank (8).

2. The reaction vessel suitable for polyurethane production according to claim 1, characterized in that, It also includes a second motor (10), a stirring rod (11), a sleeve (12), a guide rod (13), a limiting rod (14), a pull plate (15), a locking block (16), and a return spring (17). The second motor (10) is fixedly connected inside the sealing cover (9). The stirring rod (11) is fixedly connected to the end of the output shaft of the second motor (10). The stirring rod (11) is inside the storage tank (8). The left and right sides of the storage tank (8) are fixedly connected to the sleeve (12). The guide rod (13) is slidably connected inside the sleeve (12). The top of the guide rod (13) is fixedly connected to the sealing cover (9). The guide rod (13) has slots (131) at both the top and bottom ends. Two limiting rods (14) are fixedly connected to the left and right sides of the storage bucket (8). A pull plate (15) is slidably connected to the limiting rod (14). A locking block (16) is fixedly connected to the pull plate (15). A reset spring (17) is sleeved on the limiting rod (14). One end of the reset spring (17) is fixedly connected to the limiting rod (14), and the other end of the reset spring (17) is fixed to the pull plate (15). The locking block (16) engages with the slots (131) on the guide rod (13) under the action of the reset spring (17), thus restricting the movement of the guide rod (13).

3. A reaction vessel suitable for polyurethane production according to claim 2, characterized in that, It also includes a glove (18), and a handle is fixedly connected to the pull plate (15), with a glove (18) on the handle.

4. A reaction vessel suitable for polyurethane production according to claim 1, characterized in that, It also includes a sealing gasket (19), which is fixedly connected to the cover plate (51).

5. A reaction vessel suitable for polyurethane production according to claim 1, characterized in that, It also includes an observation window (20), and a transparent observation window (20) is provided on the storage tank (8). The observation window (20) is made of corrosion-resistant glass.

6. A reaction vessel suitable for polyurethane production according to claim 1, characterized in that, It also includes a protective cover (21), which is provided on the top of the mounting plate (2), and the first motor (7) is fixedly connected to the protective cover (21).

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