Stirring machine for processing polyurethane composition
By using wind power to circulate the raw materials in the mixer, the problem of poor mixing effect of the existing stirring device is solved, and the full mixing of polyurethane raw materials and better foaming effect is achieved.
Patent Information
- Application Number
- CN202421138782.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing polyurethane stirring device has a stirring dead corner during the mixing process, resulting in poor mixing effect and affecting the foaming effect.
A mixer including a mixing chamber, a feed hopper, a discharge hole, a stirring air hole and a blower are designed. The raw materials are blown by wind power to circulate and mix in the mixing chamber, and the effect similar to boiling water is achieved to achieve full mixing.
It effectively improves the mixing effect of polyurethane separators or granule raw materials, and achieves better foaming performance.
Smart Images
Figure CN222290685U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of polymer processing equipment, and in particular to a mixer for processing a polyurethane composition. Background Art
[0002] The polyurethane foaming process is the process of mixing material A and material B to produce a foamed product through chemical reaction. Foaming devices are generally divided into automatic foaming machines and manual foaming devices. In high-pressure foaming machines and low-pressure foaming machines, the mixing of the two raw materials is completed in the mixing head. The mixing of the two raw materials is usually completed in a stirring device. Commonly used stirring devices usually use stirring blades or spiral stirring racks to stir and mix polyurethane split materials or granular raw materials. This stirring method has poor effect and there are also dead corners for stirring, which affects the foaming effect. Utility Model Content
[0003] In order to improve the mixing effect of polyurethane mixture, the present application provides a stirrer for processing polyurethane composition.
[0004] The name provided in this application adopts the following technical solution:
[0005] A mixer for processing a polyurethane composition comprises a mixing chamber and a feeding hopper arranged on the upper part of the mixing chamber, a discharge hole is provided on the side of the mixing chamber, a discharge valve is provided on the discharge hole; a mixing air hole is provided at the bottom of the mixing chamber, the mixing chamber is connected to a blower, and the air outlet of the blower is connected to the mixing air hole through an air duct.
[0006] A further technical solution is that a discharge air hole is opened on the side of the mixing bin, the air duct is connected to the discharge air hole, and the discharge air hole is opposite to the discharge hole.
[0007] A further technical solution is that a mixing air valve is provided on the stirring air hole, and a discharging air valve is provided on the discharging air hole; the mixing air valve and the discharging air valve are both connected to the blower through an air duct.
[0008] A further technical solution is that a ventilation hole is opened on the mixing bin, and a filter bag is arranged at the ventilation hole.
[0009] A further technical solution is that the air supply fan is any one of a blower and an air compressor.
[0010] This application has the following beneficial technical effects:
[0011] After the raw materials of the polyurethane composition enter the mixing chamber through the feed hopper, the air blower can blow wind into the mixing chamber through the mixing air holes at the bottom of the mixing chamber, and the raw materials located directly above the mixing air holes are blown to the top of the mixing chamber. At the same time, the spatial pressure on the mixing air holes is reduced, and the raw materials around the mixing chamber are sucked into the space above the mixing air holes and blown to the top of the mixing chamber again. This cycle is repeated, so that the raw materials of the polyurethane composition can be fully mixed, which has an effect similar to boiling water, thereby achieving the effect of fully mixing the polyurethane divided materials or granular raw materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.
[0013] Figure numerals: 1, mixing bin; 11, discharge hole; 12, mixing air hole; 13, discharge air hole; 14, ventilation hole; 15, filter bag; 2, feed hopper; 21, feed valve; 3, air blower; 31, air duct; 32, mixing air valve; 33, discharge air valve. DETAILED DESCRIPTION
[0014] The technical solution in this application is further described in detail below in conjunction with the accompanying drawings.
[0015] The present application embodiment discloses a mixer for processing a polyurethane composition. Figure 1 The mixer includes a mixing chamber 1 and a feeding hopper 2 arranged on the upper part of the mixing chamber 1, a discharge hole 11 is opened on the side of the mixing chamber 1, and a discharge valve is arranged on the discharge hole 11; a mixing air hole 12 is opened at the bottom of the mixing chamber 1, and the mixing chamber 1 is connected to a blower 3, and the air outlet of the blower 3 is connected to the mixing air hole 12 through an air duct 31.
[0016] Specifically, two or more feed hoppers 2 are provided for placing different types of raw materials. The feed hopper 2 is connected to the mixing bin 1 . A feed valve 21 is provided between the feed hopper 2 and the mixing bin 1 for controlling the raw materials to enter the mixing bin 1 .
[0017] A discharge air hole 13 is provided on the side of the mixing bin 1 , and the air duct 31 is connected to the discharge air hole 13 . The discharge air hole 13 faces the discharge hole 11 and is used to discharge the mixed raw materials.
[0018] After the raw materials of the polyurethane composition enter the mixing chamber 1 through the feed hopper 2, the air blower 3 can blow wind into the mixing chamber 1 through the mixing air holes 12 at the bottom of the mixing chamber 1, and the raw materials located directly above the mixing air holes 12 are blown to the top of the mixing chamber 1. At the same time, the spatial pressure on the mixing air holes 12 is reduced, and the raw materials around the mixing chamber 1 are sucked into the space above the mixing air holes 12 and blown to the top of the mixing chamber 1 again. This cycle is repeated, so that the raw materials of the polyurethane composition can be fully mixed, which has an effect similar to boiling water, thereby achieving the effect of fully mixing the polyurethane split materials or granular raw materials.
[0019] The air blower 3 is any one of a blower and an air compressor, and is used to provide wind power.
[0020] Furthermore, a mixing air valve 32 is provided on the stirring air hole 12 , and a discharging air valve 33 is provided on the discharging air hole 13 ; the mixing air valve 32 and the discharging air valve 33 are both connected to the blower 3 through the air duct 31 .
[0021] That is, the air duct 31 has two outlet holes, which are respectively connected to the mixing air valve 32 and the discharging air valve 33. When the mixing air valve 32 is opened, the discharging air valve 33 is closed, and at this time, the raw materials in the mixing bin 1 are mixed by the blower 3; when the discharging air valve 33 is opened, the mixing air valve 32 is closed, and at this time, the mixed raw materials in the mixing bin 1 can be blown out of the mixing bin 1 through the discharging hole 11 by the blower 3.
[0022] Furthermore, the mixing bin 1 is provided with an air vent 14, and a filter bag 15 is provided at the air vent 14. When the mixing air valve 32 is opened, and the raw materials in the mixing bin 1 are blown and mixed by the blower 3, the feed valve 21 and the discharge valve are both in a closed state, and the high air pressure in the mixing bin 1 can be discharged through the air vent 14 at this time, so that the air forms a flow. The filter bag 15 can allow air to circulate and block the passage of particulate dust. While discharging the air in the mixing bin 1, the filter bag 15 can be used to prevent the raw materials in the mixing bin 1 from leaking out of the mixing bin 1 through the air vent 14.
[0023] It should be noted that all directional indications (such as up, down, left, right, front and back) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0024] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "setting", etc. should be understood in a broad sense. For example, "setting" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A stirrer for processing a polyurethane composition, characterized in that: The invention comprises a mixing chamber (1) and a feeding hopper (2) arranged on the upper part of the mixing chamber (1); a discharge hole (11) is provided on the side of the mixing chamber (1); a discharge valve is provided on the discharge hole (11); a mixing air hole (12) is provided on the bottom of the mixing chamber (1); the mixing chamber (1) is connected to a blower (3); and the air outlet of the blower (3) is connected to the mixing air hole (12) via an air duct (31).
2. A mixer for processing a polyurethane composition according to claim 1, characterized in that: A discharge air hole (13) is provided on the side of the mixing bin (1), the air duct (31) is connected to the discharge air hole (13), and the discharge air hole (13) is directly opposite to the discharge hole (11).
3. A mixer for processing a polyurethane composition according to claim 2, characterized in that: The stirring air hole (12) is provided with a mixing air valve (32), and the discharging air hole (13) is provided with a discharging air valve (33); the mixing air valve (32) and the discharging air valve (33) are both connected to the air supply fan (3) through an air duct (31).
4. A mixer for processing a polyurethane composition according to claim 1, characterized in that: The mixing chamber (1) is provided with an air vent (14), and a filter bag (15) is arranged at the air vent (14).
5. A mixer for processing a polyurethane composition according to claim 1, characterized in that: The air supply fan (3) is any one of a blower and an air compressor.