Polyurethane foam raw material production stirring device

Abstract

The utility model discloses a polyurethane foam raw material production stirring device, and relates to the technical field of polyurethane foam production. The device comprises a stirring box and a cleaning mechanism, three supporting legs are fixed at the bottom of the stirring box, the three supporting legs are arranged in an annular array with the stirring box as the circle center, a second motor is fixedly connected to a middle shaft of the bottom of the stirring box, a shaft is fixedly connected to the top fixed output end of the second motor, and a rotating plate is fixedly connected to the top of the shaft. Through the arrangement of the pressing block and the scraping plate, specifically, the rotating plate rotates to drive the scraping plate to scrape and clean the inner wall of the stirring box, and the bottom of the rotating plate is in discontinuous contact with the top of the arc-shaped block, so that the pressing block at the bottom slides up and down to clean the inner wall of the discharging pipe; the polyurethane raw materials remaining on the inner wall of the stirring device and adhering to the inner wall of the discharging pipe are reduced, so that the stirring of the equipment is smoother, the influence of excessive remaining raw materials on the production efficiency and the quality of subsequently stirred raw materials is reduced, and the use effect of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polyurethane foam production, in particular to a polyurethane foam raw material production stirring device. Background Art

[0002] Foam is a material containing pores, such as polystyrene foam board, polyvinyl chloride foam insulation board and polyurethane foam. Usually, products on the market such as foam plastics, pearl cotton, foam rubber, water-swelling waterstop, polysulfide sealant, etc. all belong to the foam series products.

[0003] In the existing polyurethane foam raw material production process, a stirring device is used to mix and stir the raw materials. The fat substance in the stirring device has strong adhesion and is easy to stick to the inner wall of the stirring device and the inner wall of the discharge pipe, which is not easy to remove. If the sticky raw materials inside are not cleaned for a long time, there will be too much sticky fat substance in the stirring device, making the equipment unusable, thereby affecting production efficiency and the quality of subsequent products. Utility Model Content

[0004] The purpose of the utility model is to provide a polyurethane foam raw material production stirring device, by arranging a pressing block and a scraper, specifically by rotating a rotating plate to drive the scraper to scrape and clean the inner wall of the stirring box, the bottom of the rotating plate is intermittently in contact with the top of the arc block, so that the pressing block at the bottom slides up and down to clean the inner wall of the discharge pipe, thereby solving the problem of reducing the polyurethane raw material remaining on the inner wall of the stirring device and sticking to the inner wall of the discharge pipe, making the equipment stirring smoother, reducing the impact of excessive residual raw materials on production efficiency and the quality of subsequent stirring raw materials, and improving the use effect of the equipment.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a polyurethane foam raw material production stirring device, including a stirring box and a cleaning mechanism, three legs are fixed at the bottom of the stirring box, the three legs are arranged in a circular array with the stirring box as the center, a motor 2 is fixedly connected to the central axis of the bottom of the stirring box, a shaft is fixedly connected to the top output end of the motor 2, the top of the shaft passes through the stirring box and extends to the inside, a rotating plate is fixedly connected to the top of the shaft, a scraper is fixedly connected to the top of the rotating plate, and the outer surface of the scraper contacts the inner wall of the stirring box;

[0007] The cleaning mechanism includes a discharge pipe, the bottom of the mixing box is fixedly connected to the top of the discharge pipe, the inner wall of the discharge pipe is fixedly connected to a support frame, and there are three support frames in total, and the three support frames are fixedly connected to a fixed cylinder on one side close to each other, a sliding hole is provided at the bottom of the fixed cylinder, a sliding limit rod is slidably connected to the inner wall of the sliding hole, a pressure block is fixedly connected to the bottom of the sliding limit rod, and a plurality of dredging grooves are provided inside the pressure block. By arranging the pressure block and the scraper, the polyurethane raw material remaining on the inner wall of the stirring device and sticking to the inner wall of the discharge pipe is reduced, so that the equipment can be stirred more smoothly, the impact of excessive residual raw materials on the production efficiency and the quality of subsequent stirring raw materials is reduced, and the use effect of the equipment is improved.

[0008] Furthermore, a sliding cover cylinder is fixedly connected to the top of the sliding limit rod, and an arc block is fixedly connected to the top of the sliding cover cylinder. By setting the sliding cover cylinder, the polyurethane foam raw material can be protected from entering the interior of the cleaning equipment during the feeding process, and effective protection can be provided.

[0009] Furthermore, the inner wall of the sliding cover cylinder is slidably connected to the outer surface of the fixed cylinder, and the outer surface of the sliding limit rod is sleeved with a spring. By setting the spring, it can automatically rebound after being squeezed, reducing the equipment structure and having good usability.

[0010] Furthermore, the bottom and top of the spring are fixedly connected to the bottom of the inner wall of the fixed cylinder and the top of the inner wall of the sliding cover cylinder respectively, and the top of the arc block contacts the bottom of the rotating plate. By setting the arc block and the rotating plate, the arc setting can reduce friction so that the contact can pass smoothly without jamming, which is good enough to protect the equipment from damage.

[0011] Furthermore, a feed port is fixedly connected to the top of the mixing box, a motor is fixedly connected to the central axis of the top of the mixing box, a rotating rod is fixedly connected to the bottom output end of the motor, and a stirring blade is fixedly connected to the outer surface of the rotating rod. By providing a plurality of stirring blades, the stirring can be more sufficient, the stirring area is wider, and the mixing effect of the polyurethane foam is improved.

[0012] Furthermore, there are several stirring blades, and the several stirring blades are arranged in a circular array with the rotating rod as the center. A fixed scraper is fixedly connected to the top of the inner wall of the stirring box. A cleaning groove is opened inside the fixed scraper. The inner wall of the cleaning groove is in contact with the outer surface of the stirring blade. The fixed scraper can improve the stirring quality while reducing the impact of the stickiness of the fat raw materials on the equipment. Too much stickiness will make the stirring blade unable to rotate, which will cause damage to the equipment.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model sets a pressing block and a scraper, specifically, drives the scraper to scrape and clean the inner wall of the mixing box by rotating the rotating plate. The bottom of the rotating plate is in intermittent contact with the top of the arc block, so that the pressing block at the bottom slides up and down to clean the inner wall of the discharge pipe, reducing the polyurethane raw material remaining on the inner wall of the stirring device and sticking to the inner wall of the discharge pipe, making the equipment stirring smoother, reducing the impact of excessive residual raw materials on production efficiency and the quality of subsequent stirring raw materials, and improving the use effect of the equipment.

[0015] 2. The utility model sets a fixed scraper, specifically, installs a fixed scraper to cooperate with the stirring blade. When the stirring blade rotates, it contacts the groove in the fixed scraper to clean the raw materials sticking to the surface of the stirring blade. It can improve the stirring quality while reducing the impact of the stickiness of the greasy raw materials on the equipment. Too much stickiness will make the stirring blade unable to rotate, causing damage to the equipment.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for describing the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the utility model;

[0020] Figure 3 It is a schematic diagram of the local structure of the arc block of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the mixing box of the utility model;

[0022] Figure 5 For this utility model Figure 4 A is a schematic diagram of the partially enlarged structure.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Mixing box; 11. Support legs; 12. Motor 1; 121. Rotating rod; 122. Mixing blades; 13. Feed inlet; 14. Fixed scraper; 15. Motor 2; 16. Rotating plate; 161. Scraper; 2. Cleaning mechanism; 21. Discharge pipe; 22. Fixed cylinder; 221. Support frame; 23. Sliding cover cylinder; 231. Sliding limit rod; 24. Arc block; 25. Pressing block; 26. Spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 As shown, the utility model is a polyurethane foam raw material production stirring device, including a stirring box 1 and a cleaning mechanism 2. Three legs 11 are fixed to the bottom of the stirring box 1. The three legs 11 are arranged in a circular array with the stirring box 1 as the center. A motor 2 15 is fixedly connected to the central axis of the bottom of the stirring box 1. The top output end of the motor 2 15 is fixedly connected to a shaft. The top of the shaft penetrates the stirring box 1 and extends to the inside. A rotating plate 16 is fixedly connected to the top of the rotating plate 16. A scraper 161 is fixedly connected to the top of the rotating plate 16. The outer surface of the scraper 161 contacts the inner wall of the stirring box 1. The cleaning mechanism 2 includes a discharge pipe 21. The bottom of the stirring box 1 is fixedly connected to the top of the discharge pipe 21. A support frame 221 is fixedly connected to the inner wall of the discharge pipe 21. There are three support frames 221 in total. The three support frames 221 are connected to each other. A fixed cylinder 22 is fixedly connected to one side close to each other, a sliding hole is provided at the bottom of the fixed cylinder 22, a sliding limit rod 231 is slidably connected to the inner wall of the sliding hole, a pressing block 25 is fixedly connected to the bottom of the sliding limit rod 231, a plurality of dredging grooves are provided inside the pressing block 25, and the pressing block 25 and the scraper 161 are arranged, specifically, the rotating plate 16 is rotated to drive the scraper to scrape and clean the inner wall of the mixing box 1, and the bottom of the rotating plate is in intermittent contact with the top of the arc block 24, so that the pressing block 25 at the bottom slides up and down to clean the inner wall of the discharge pipe 21, thereby reducing the polyurethane raw material remaining on the inner wall of the stirring device and sticking to the inner wall of the discharge pipe 21, making the equipment stirring smoother, reducing the impact of excessive residual raw materials on production efficiency and the quality of subsequent stirring raw materials, and improving the use effect of the equipment.

[0027] The top of the sliding limit rod 231 is fixedly connected to the sliding cover cylinder 23 , and the top of the sliding cover cylinder 23 is fixedly connected to the arc block 24 .

[0028] The inner wall of the sliding cover tube 23 is slidably connected to the outer surface of the fixed tube 22 , and the outer surface of the sliding limit rod 231 is sleeved with a spring 26 .

[0029] The bottom and top of the spring 26 are fixedly connected to the bottom of the inner wall of the fixed cylinder 22 and the top of the inner wall of the sliding cover cylinder 23 respectively, and the top of the arc block 24 contacts the bottom of the rotating plate 16.

[0030] A feed inlet 13 is fixedly connected to the top of the mixing box 1, and a motor 12 is fixedly connected to the middle axis of the top of the mixing box 1.

[0031] A rotating rod 121 is fixedly connected to the output end at the bottom of the motor 12 , and a stirring blade 122 is fixedly connected to the outer surface of the rotating rod 121 .

[0032] There are several stirring blades 122, and the several stirring blades 122 are arranged in a circular array with the rotating rod 121 as the center. A fixed scraper 14 is fixedly connected to the top of the inner wall of the mixing box 1, and a cleaning groove is opened inside the fixed scraper 14. The inner wall of the cleaning groove contacts the outer surface of the stirring blade 122. By setting the fixed scraper 14, specifically installing a fixed scraper 14 to cooperate with the stirring blade 122, the stirring blade 122 contacts the groove in the fixed scraper when it rotates, and the raw materials sticking to the surface of the stirring blade 122 are cleaned, which can improve the stirring quality and reduce the influence of the stickiness of the fat raw materials on the equipment. Too much stickiness makes the stirring blade 122 unable to rotate, which will cause damage to the equipment.

[0033] A specific application of this embodiment is: adding a well-proportioned polyurethane foam raw material into the mixing box 1 through the feed port 13, and starting the motor 12 after the raw material is added to drive the mixing blade 122 to rotate through the rotating rod 121 to stir the added polyurethane foam raw material. During the stirring process, the fat in the polyurethane foam raw material will produce a certain viscosity and will stick to the surface of the mixing blade 122 and the inner wall of the mixing box 1. These places are not easy to clean. At this time, only a fixed scraper 14 needs to be installed on the top to clean the raw material sticking to the surface of the mixing blade 122. A cleaning groove is provided inside the fixed scraper The sticky raw materials are cleaned by contacting the outer surface of the stirring blade 122 with the cleaning groove to prevent the stirring blade 122 from having too much sticky raw materials. By cleaning the stirring blade 122, the stirring quality can be improved while reducing the impact of the stickiness of the fat raw materials on the equipment. Too much stickiness will make the stirring blade 122 unable to rotate and cause damage to the equipment. When the raw materials are stirred, the discharge pipe 21 is opened to discharge the materials. Due to the viscosity of the fat, the inner wall of the discharge pipe 21 will also be adhered to when the materials are discharged, which will cause the stirred polyurethane foam to be blocked in the discharge pipe 21. At this time, the motor is started The second 15 drives the scraper 161 to rotate through the rotating plate 16. When the scraper 161 rotates, it can scrape and clean the raw materials stuck to the inner wall, reducing too much raw materials remaining on the inner wall and affecting the subsequent mixing quality. When the rotating plate 16 rotates, the bottom will contact the upper surface of the arc block 24. Since the bottom of the rotating plate 16 is an arc-shaped setting, it can smoothly contact the arc block 24 and squeeze the arc block 24 downward through the sliding limit rod 231. When the sliding limit rod 231 slides downward, it will drive the pressing block 25 at the bottom to squeeze downward, clean and dredge the raw materials remaining on the inner wall of the discharge pipe 21, and the pressing block A plurality of dredging grooves are provided on 25 for dredging and can reduce the amount of raw materials remaining on the pressing block 25. When the rotating plate 16 passes through the arc block 24, the spring 26 will rebound and push the arc block 24 back to its original position. The sliding cover cylinder 23 at the bottom of the arc block 24 can partially block the raw materials and prevent them from entering the cleaning mechanism 2. The rotating plate 16 continuously rotates to enable the scraper 161 to clean the inner wall of the mixing box 1 while intermittently contacting the arc block 24, thereby cleaning and dredging the raw materials blocked on the inner wall of the discharge pipe 21, making the discharge smoother and improving the quality of subsequent mixing.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A polyurethane foam raw material production stirring device, comprising a stirring box (1) and a cleaning mechanism (2), wherein three legs (11) are fixed to the bottom of the stirring box (1), and the three legs (11) are arranged in a circular array with the stirring box (1) as the center, characterized in that: A second motor (15) is fixedly connected to the central axis at the bottom of the mixing box (1), a shaft is fixedly connected to the top output end of the second motor (15), the top of the shaft passes through the mixing box (1) and extends to the inside, a rotating plate (16) is fixedly connected to the top of the shaft, a scraper (161) is fixedly connected to the top of the rotating plate (16), and the outer surface of the scraper (161) contacts the inner wall of the mixing box (1); The cleaning mechanism (2) comprises a discharge pipe (21), the bottom of the mixing box (1) is fixedly connected to the top of the discharge pipe (21), the inner wall of the discharge pipe (21) is fixedly connected to a support frame (221), and a total of three support frames (221) are provided, and a fixed cylinder (22) is fixedly connected to one side of the three support frames (221) close to each other, a sliding hole is provided at the bottom of the fixed cylinder (22), a sliding limit rod (231) is slidably connected to the inner wall of the sliding hole, a pressing block (25) is fixedly connected to the bottom of the sliding limit rod (231), and a plurality of dredging grooves are provided inside the pressing block (25).

2. A polyurethane foam raw material production stirring device according to claim 1, characterized in that: The top of the sliding limit rod (231) is fixedly connected to a sliding cover cylinder (23), and the top of the sliding cover cylinder (23) is fixedly connected to an arc block (24).

3. A polyurethane foam raw material production stirring device according to claim 2, characterized in that: The inner wall of the sliding cover cylinder (23) is slidably connected to the outer surface of the fixed cylinder (22), and the outer surface of the sliding limit rod (231) is sleeved with a spring (26).

4. A polyurethane foam raw material production stirring device according to claim 3, characterized in that: The bottom and top of the spring (26) are fixedly connected to the bottom of the inner wall of the fixed cylinder (22) and the top of the inner wall of the sliding cover cylinder (23) respectively, and the top of the arc block (24) contacts the bottom of the rotating plate (16).

5. A polyurethane foam raw material production stirring device according to claim 4, characterized in that: A feed port (13) is fixedly connected to the top of the mixing box (1), and a motor (12) is fixedly connected to the center axis of the top of the mixing box (1).

6. A polyurethane foam raw material production stirring device according to claim 5, characterized in that: The bottom output end of the motor 1 (12) is fixedly connected to a rotating rod (121), and the outer surface of the rotating rod (121) is fixedly connected to a stirring blade (122).

7. A polyurethane foam raw material production stirring device according to claim 6, characterized in that: There are a plurality of stirring blades (122), and the plurality of stirring blades (122) are arranged in a circular array with the rotating rod (121) as the center.

8. A polyurethane foam raw material production stirring device according to claim 7, characterized in that: A fixed scraper (14) is fixedly connected to the top of the inner wall of the mixing box (1), a cleaning groove is provided inside the fixed scraper (14), and the inner wall of the cleaning groove is in contact with the outer surface of the mixing blade (122).

Images