Polyurethane particle crushing device
By using liquid nitrogen to enhance the granularity of liquid nitrogen in polyurethane particles, combined with the design of the curved sieve net and the curved cutting knife, it solves the problem of low crushing efficiency of polyurethane particles in existing technologies, and achieves efficient crushing and separation of separation and separation Effect.
Patent Information
- Application Number
- CN202420883268.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-26
AI Technical Summary
During the crushing process of existing polyurethane particles, due to the soft texture of the particles, the rotating crushing knife is difficult to effectively crush, resulting in low crushing efficiency.
A polyurethane particle crushing device is designed, which uses liquid nitrogen to increase the brittleness of the particles, and achieves efficient crushing and separation of the particles through an arc-shaped screen and an arc-shaped cutting knife.
Cooling through liquid nitrogen increases the brittleness of the particles, which improves the crushing efficiency; the arc sieve net and the arc -shaped cutting knife effectively separate and cut the particles connected together to avoid repeated crushing and equipment blockage, which significantly improves the overall crushing efficiency.
Smart Images
Figure CN222384961U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of polyurethane particle crushing, in particular to a polyurethane particle crushing device. Background Art
[0002] In the existing production process of thermal insulation floor slabs, polyurethane particles must be crushed in advance before being added to concrete for mixing. However, in the existing polyurethane particle crushing process, a rotating crushing knife is usually used to continuously crush the polyurethane particles to crush the polyurethane particles. However, when the crushing knife comes into contact with the polyurethane particles, due to the relatively soft texture of the polyurethane particles, it is difficult for the rotating crushing knife to crush the polyurethane particles, resulting in low overall crushing efficiency. Utility Model Content
[0003] In order to overcome the disadvantage that polyurethane particles are relatively soft and it is difficult for a rotating crushing knife to crush the polyurethane particles, which leads to low overall crushing efficiency, the utility model provides a polyurethane particle crushing device.
[0004] The technical implementation scheme of the utility model is: a polyurethane particle crushing device, comprising a bracket, a barrel body, a discharge plate and a barrel cover; the bracket is fixedly connected to the barrel body; the bracket is fixedly connected to the discharge plate; the barrel body is detachably connected to the barrel cover; it also includes an inner cylinder, a long tube, a crushing knife and a power component; the barrel body is fixedly connected to the inner cylinder; the inner cylinder is rotatably connected to the long tube, and the long tube is rotatably connected to the discharge plate; the long tube is opened with a plurality of through holes; the long tube is fixedly connected to a plurality of crushing knives, and the crushing knives are used to crush the polyurethane particles; the discharge plate is connected to a power component for driving the long tube and the parts connected thereto to rotate.
[0005] In addition, it is particularly preferred that a barrier net is further included; and a barrier net is arranged in each through hole.
[0006] In addition, it is particularly preferred that it also includes an arc-shaped screen and a short tube; the inner cylinder is provided with a plurality of through slots; each through slot is provided with an arc-shaped screen for screening the crushed polyurethane particles; the inner cylinder is connected and fixedly connected with a short tube.
[0007] In addition, it is particularly preferred that a limiting cylinder is also included; the barrel body is detachably connected with a limiting cylinder for preventing the connected crushed polyurethane particles from passing through the mesh of the arc-shaped screen together, and the limiting cylinder is located outside the inner cylinder.
[0008] In addition, it is particularly preferred that it also includes a connecting plate and an arc-shaped cutting knife; the long tube is fixedly connected to the connecting plate, the connecting plate is fixedly connected to the arc-shaped cutting knife for cutting the crushed polyurethane particles connected together, and the arc-shaped cutting knife is in contact with the arc-shaped screen.
[0009] Furthermore, it is particularly preferred that the arc-shaped cutting blade is arranged obliquely.
[0010] Compared with the prior art, the utility model has the following advantages: the brittleness of the polyurethane particles is increased by liquid nitrogen, so that the crushing knife is convenient for crushing the polyurethane particles, thereby avoiding the problem in the prior art that the polyurethane particles are relatively soft and the rotating crushing knife is difficult to crush the polyurethane particles, thereby causing the overall crushing efficiency to be low;
[0011] The polyurethane particles larger than the mesh size are intercepted by the curved screen to separate the crushed polyurethane particles from the uncrushed polyurethane particles, so as to avoid the crushing knife from repeatedly crushing the crushed polyurethane particles, thereby still causing the problem of low overall crushing efficiency;
[0012] By arranging a limiting cylinder in the barrel body, the connected crushed polyurethane particles are blocked by the limiting cylinder and stuck in the mesh of the arc screen, so as to avoid the problem that the crushed polyurethane particles in the collection frame are not crushed well as a whole because the arc screen cannot intercept the connected crushed polyurethane particles.
[0013] The connected crushed polyurethane particles are separated by an arc-shaped cutting knife, so as to avoid the problem that too many connected crushed polyurethane particles are stuck in the mesh of the arc-shaped screen, which may cause the arc-shaped screen to be unable to continue working. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the first structure disclosed by the utility model polyurethane particle crushing device;
[0015] Figure 2 This is a schematic diagram of the second structure disclosed by the polyurethane particle crushing device of the utility model;
[0016] Figure 3 This is a third structural schematic diagram of the polyurethane particle crushing device disclosed by the utility model;
[0017] Figure 4 This is a plan view of the polyurethane particle crushing device disclosed in the utility model.
[0018] In the figure: 1- bracket, 2- barrel body, 3- unloading plate, 4- barrel cover, 5- inner barrel, 6- long tube, 7- crushing knife, 101- mounting plate, 102- motor, 103- gear 1, 104- gear 2, 201- barrier net, 202- arc screen, 203- short tube, 301- limiting cylinder, 302- connecting plate, 303- arc cutting knife, 4a- handle, 5a- through slot, 6a- through hole. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.
[0020] Example 1
[0021] A polyurethane particle crushing device, such as Figure 1-4 As shown, it includes a bracket 1, a barrel body 2, a blanking plate 3 and a barrel cover 4; the bracket 1 is bolted to the barrel body 2; the bracket 1 is fixedly connected to the blanking plate 3, and the blanking plate 3 is inclined; the barrel body 2 is detachably connected to the barrel cover 4; the barrel cover 4 is provided with a handle 4a;
[0022] It also includes an inner cylinder 5, a long tube 6, a crushing knife 7 and a power component; the inner cylinder 5 for containing polyurethane particles is fixedly connected to the barrel body 2; the inner cylinder 5 is rotatably connected to the long tube 6, and the long tube 6 is rotatably connected to the blanking plate 3; the long tube 6 has three through holes 6a; the long tube 6 is fixedly connected to the crushing knife 7; the blanking plate 3 is connected to a power component for driving the long tube 6 and the parts connected thereto to rotate.
[0023] The power assembly includes a mounting plate 101, a motor 102, a gear 103 and a gear 2 104; the blanking plate 3 is fixedly connected to the mounting plate 101; the mounting plate 101 is bolted to the motor 102; the output shaft of the motor 102 is fixedly connected to the gear 103; the long tube 6 is fixedly connected to the gear 2 104, and the gear 2 104 is meshed with the gear 1 103.
[0024] It also includes a barrier net 201; each through hole 6a is provided with a barrier net 201, and the barrier net 201 is used to prevent polyurethane particles from entering the long tube 6 through the through hole 6a, thereby causing the long tube 6 to be blocked.
[0025] It also includes an arc-shaped screen 202 and a short tube 203; the inner cylinder 5 is provided with three through slots 5a; each through slot 5a is provided with an arc-shaped screen 202; the inner cylinder 5 is connected and fixedly connected with the short tube 203.
[0026] The specific operation of the above-mentioned embodiment 1 is as follows: first, the long tube 6 is manually connected to an external device for conveying liquid nitrogen, and then the short tube 203 is connected to an external device for recovering liquid nitrogen. It should be noted that the liquid nitrogen conveyed by the external conveying device is in an atomized state;
[0027] When the polyurethane particles are crushed, a collection frame is first manually placed on the lower left side of the blanking plate 3, and then the barrel cover 4 is manually removed from the barrel body 2 through the handle 4a, and then the polyurethane particles are manually poured into the inner barrel 5. After pouring, the barrel cover 4 is manually reinstalled on the barrel body 2 through the handle 4a again, and the preparation is completed;
[0028] Then, the output shaft of the motor 102 mounted on the mounting plate 101 is controlled to drive the long tube 6 and its connected parts to rotate through the gear 1 103 and the gear 2 104 in turn, so that the rotating crushing knife 7 continuously crushes the polyurethane particles in the inner tube 5;
[0029] At the same time, the external conveying device is controlled to convey the liquid nitrogen into the long tube 6, so that the liquid nitrogen is sprayed into the inner tube 5 through the through hole 6a, so that the liquid nitrogen fills the entire inner tube 5. At this time, the liquid nitrogen will be rapidly vaporized under normal pressure and absorb a large amount of heat, so that the polyurethane particles in the inner tube 5 will be rapidly cooled, thereby increasing the brittleness of the polyurethane particles, making it easier for the crushing knife 7 to crush the polyurethane particles, thereby avoiding the problem in the prior art that the rotating crushing knife 7 is difficult to crush the polyurethane particles due to the relatively soft texture of the polyurethane particles, thereby resulting in low overall crushing efficiency.
[0030] Considering that if the crushed polyurethane particles and the uncrushed polyurethane particles exist together in the inner tube 5, the crushing knife 7 will repeatedly crush the crushed polyurethane particles, that is, the crushing knife 7 will do a lot of useless work, and the overall crushing efficiency is still low;
[0031] Therefore, when the external conveying device conveys liquid nitrogen, the external recovery device is controlled to extract the gas in the barrel body 2 through the short tube 203, so that the liquid nitrogen in the inner cylinder 5 enters the barrel body 2 through the through groove 5a, and then enters the external recovery device through the short tube 203, so that the external conveying device can continuously convey liquid nitrogen into the inner cylinder 5. Therefore, when the liquid nitrogen is sprayed into the inner cylinder 5 from the through hole 6a, the liquid nitrogen will push the polyurethane particles to move away from the center point of the inner cylinder 5. During the movement, when the polyurethane particles come into contact with the arc screen 202, particles larger than the mesh size thereof will be The polyurethane particles that are smaller than the mesh will be intercepted and remain in the inner cylinder 5, while the polyurethane particles that are smaller than the mesh can enter the barrel body 2, and then fall onto the discharge plate 3 through the gap on the lower side between the barrel body 2 and the inner cylinder 5, and then move to the left under the influence of the inclination angle of the discharge plate 3, and finally fall into the collection frame, thereby realizing the separation of the crushed polyurethane particles from the uncrushed polyurethane particles, so as to avoid the crushing knife 7 from repeatedly crushing the crushed polyurethane particles, which will still lead to the problem of low overall crushing efficiency.
[0032] Example 2
[0033] On the basis of Example 1, Figure 2-4 As shown, a limiting cylinder 301 is also included; the limiting cylinder 301 is detachably connected to the barrel body 2, and the limiting cylinder 301 is located outside the inner cylinder 5.
[0034] It also includes a connecting plate 302 and an arc-shaped cutting knife 303 ; the long tube 6 is fixedly connected to the connecting plate 302 , the connecting plate 302 is fixedly connected to the arc-shaped cutting knife 303 , and the arc-shaped cutting knife 303 is in contact with the arc-shaped screen 202 .
[0035] The arc-shaped cutting blade 303 is arranged to be inclined, and this arrangement is used to enable the arc-shaped cutting blade 303 to push the crushed polyurethane particles stuck between the inner cylinder 5 and the limiting cylinder 301 to move downward.
[0036] The specific operation of the above-mentioned embodiment 2 is as follows: In embodiment 1, if there are crushed polyurethane particles connected together, the arc-shaped screen 202 can only intercept polyurethane particles larger than its mesh, but cannot intercept the crushed polyurethane particles connected together;
[0037] Therefore, a limiting cylinder 301 is arranged in the barrel body 2, and the distance between the limiting cylinder 301 and the arc-shaped screen 202 is the size of a single crushed polyurethane particle. When the crushed polyurethane particles connected together pass through the arc-shaped screen 202, the crushed polyurethane particles connected together are blocked by the limiting cylinder 301 and will be stuck in the grid of the arc-shaped screen 202. At this time, half of the crushed polyurethane particles connected together will be between the limiting cylinder 301 and the arc-shaped screen 202, and the other half will still be in the inner cylinder 5, so that the problem that the arc-shaped screen 202 cannot intercept the crushed polyurethane particles connected together can be avoided.
[0038] It should be noted that during the rotation of the long tube 6, the long tube 6 will drive the arc cutting knife 303 to move in close contact with the arc screen 202 through the connecting plate 302. During the movement, the arc cutting knife 303 can cut the crushed polyurethane particles connected together and stuck in the grid of the arc screen 202, so that the crushed polyurethane particles connected together are separated. This avoids the problem that too many crushed polyurethane particles connected together are stuck in the grid of the arc screen 202, which will cause the arc screen 202 to be unable to continue working.
[0039] Although the utility model is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications can be made to the utility model without departing from the principle and spirit of the utility model defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the utility model, but the scope of protection is limited by the content of the claims.
Claims
1. A polyurethane particle crushing device, comprising a bracket (1), a barrel (2), a blanking plate (3) and a barrel cover (4); the bracket (1) is fixedly connected to the barrel (2); the bracket (1) is fixedly connected to the blanking plate (3); the barrel (2) is detachably connected to the barrel cover (4); the characteristics are: The invention also comprises an inner cylinder (5), a long tube (6), a crushing knife (7) and a power assembly; the inner cylinder (5) is fixedly connected to the barrel body (2); the inner cylinder (5) is rotatably connected to the long tube (6), and the long tube (6) is rotatably connected to the blanking plate (3); the long tube (6) is provided with a plurality of through holes (6a); the long tube (6) is fixedly connected to a plurality of crushing knives (7), and the crushing knives (7) are used to crush polyurethane particles; the blanking plate (3) is connected to a power assembly used to drive the long tube (6) and parts connected thereto to rotate.
2. A polyurethane particle crushing device according to claim 1, characterized in that: It also includes a barrier net (201); a barrier net (201) is arranged in each through hole (6a).
3. A polyurethane particle crushing device according to any one of claims 1-2, characterized in that: It also includes an arc-shaped screen (202) and a short tube (203); the inner cylinder (5) is provided with a plurality of through slots (5a); each through slot (5a) is provided with an arc-shaped screen (202) for screening the crushed polyurethane particles; and the inner cylinder (5) is connected to and fixedly connected with the short tube (203).
4. A polyurethane particle crushing device according to claim 3, characterized in that: It also includes a limiting cylinder (301); the limiting cylinder (301) is detachably connected to the barrel body (2) and is used to prevent the connected crushed polyurethane particles from passing through the mesh of the arc-shaped screen (202) together, and the limiting cylinder (301) is located outside the inner cylinder (5).
5. A polyurethane particle crushing device according to claim 4, characterized in that: It also includes a connecting plate (302) and an arc-shaped cutting knife (303); the long tube (6) is fixedly connected to the connecting plate (302), the connecting plate (302) is fixedly connected to the arc-shaped cutting knife (303) for cutting the connected crushed polyurethane particles, and the arc-shaped cutting knife (303) is in contact with the arc-shaped screen (202).
6. A polyurethane particle crushing device according to claim 5, characterized in that: The arc-shaped cutting blade (303) is arranged to be inclined.