Automatic blending device for mixing proportion of PU (polyurethane) coating
By designing an automatic mixing device that includes a mixing tank, support frame, metering pump, liquid extraction pipe, liquid delivery pipe and stirring blades, the problem of poor mixing effect of existing devices is solved, and the precise mixing ratio and efficient stirring of coatings are achieved, thus improving the mixing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU YOUPIN CHEM CO LTD
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-01
AI Technical Summary
The existing automatic mixing device for PU coatings has poor mixing effect, which affects user experience.
An automatic mixing device was designed, comprising a mixing tank, support frame, metering pump, extraction pipe, delivery pipe, mixing mechanism, and stirring blades. It improves mixing efficiency by accurately extracting and conveying raw materials and using a motor-driven bevel gear transmission system to rotate the stirring blades, combined with an observation window and electric valves.
It achieves precise mixing ratio and efficient stirring of coatings, improves mixing effect and efficiency, prevents device slippage or displacement, and facilitates operators to observe the mixing process.
Smart Images

Figure CN224180789U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coating mixing equipment technology, specifically an automatic mixing device for PU coatings. Background Technology
[0002] PU coatings, or polyurethane coatings, are widely used in many fields such as furniture, automobiles, and construction due to their excellent abrasion resistance, corrosion resistance, and gloss. In practical applications, PU coatings often require precise mixing of different components to meet varying construction needs and product quality standards.
[0003] Based on the above, the inventors have discovered the following problems: most current automatic mixing devices for PU coatings use simple stirring mechanisms, which result in poor mixing effects and affect user experience.
[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an automatic mixing device for PU coatings to achieve a more practical purpose. Utility Model Content
[0005] The purpose of this utility model is to provide an automatic mixing ratio adjustment device for PU coatings, in order to solve the problem mentioned in the background art that most of the existing automatic mixing ratio adjustment devices for PU coatings are simple stirring mechanisms, which have poor mixing effect and affect the user's use.
[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:
[0007] An automatic mixing device for PU coatings includes a mixing tank, a support frame installed on the outside of the mixing tank, an anti-slip pad installed at the bottom of the support frame, several material buckets provided on the outside of the support frame, several metering mechanisms installed at the top of the mixing tank, each metering mechanism including a metering pump, a liquid extraction pipe installed at the input end of the metering pump, one end of the liquid extraction pipe extending to the bottom of the material bucket, a liquid delivery pipe installed at the output end of the metering pump, one end of the liquid delivery pipe being connected to the top of the mixing tank, and a mixing mechanism installed inside the mixing tank.
[0008] Furthermore, the mixing mechanism includes a sleeve, the top end of which is rotatably connected to the inner top end of the mixing tank. A fixed shaft is provided on the inner side of the sleeve. A housing is installed at the middle of the top of the mixing tank. The top end of the sleeve penetrates the inner bottom end of the housing. The top end of the fixed shaft is fixedly connected to the inner top end of the housing. A rotating shaft is rotatably connected to the outer side of the sleeve, and a stirring blade is installed at one end of the rotating shaft.
[0009] The advantage of adopting the above-mentioned further solution is that the stirring blades are rotatable by installing stirring blades at one end of the rotating shaft.
[0010] Furthermore, a first bevel gear is fitted on the other end of the rotating shaft and the outer side of the fixed shaft, and the rotating shaft and the fixed shaft mesh with the first bevel gear.
[0011] The beneficial effect of adopting the above-mentioned further solution is that, since the other end of the rotating shaft and the outside of the fixed shaft are both fitted with first bevel gears, the rotating sleeve can drive the stirring blades to rotate.
[0012] Furthermore, a motor is installed on one side of the chassis, and a second bevel gear is fitted on both the output end of the motor and the outer top of the sleeve. The motor and the sleeve are connected by the second bevel gear transmission.
[0013] The beneficial effect of adopting the above-mentioned further solution is that the sleeve can be electrically rotated by fitting a second bevel gear on both the output end of the motor and the outer top of the sleeve.
[0014] Furthermore, an observation window is installed on one side of the top of the mixing tank.
[0015] The advantage of adopting the above-mentioned further solution is that, by installing an observation window on one side of the top of the mixing tank, it is convenient for operators to observe the mixing status of the coating inside the mixing tank.
[0016] Furthermore, an electric valve is installed at the bottom of the mixing tank, and a discharge pipe is installed at one end of the electric valve.
[0017] The advantage of adopting the above-mentioned further solution is that an electric valve is installed at the bottom of the mixing tank to realize the discharge switch function.
[0018] Furthermore, the anti-slip mat is made of rubber, and the bottom of the anti-slip mat has anti-slip texture.
[0019] The beneficial effect of adopting the above-mentioned further solution is that by using rubber material for the anti-slip mat, the friction between the device and the ground is enhanced, preventing the device from sliding or displacing due to vibration or other reasons during operation.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: This automatic PU coating mixing ratio adjustment device has several material tanks on the outside of the support frame for storing the coating raw materials to be mixed. Through the setting of a metering pump, a liquid extraction pipe, and a liquid delivery pipe, it achieves precise extraction and delivery of raw materials, thereby achieving precise adjustment of the coating mixing ratio. A mixing mechanism is installed inside the mixing tank to achieve efficient stirring and mixing, ensuring that different coatings are fully integrated and improving the mixing effect. A stirring blade is installed at one end of the rotating shaft, allowing the stirring blade to rotate. A first bevel gear is fitted on the other end of the rotating shaft and the outside of the fixed shaft, enabling the sleeve to rotate... This device can drive the stirring blades to rotate. A second bevel gear is fitted at both the motor's output end and the outer top of the sleeve, enabling the sleeve to rotate electrically. An observation window is installed on one side of the top of the mixing tank, allowing operators to easily observe the mixing process of the coating inside. An electric valve is installed at the bottom of the mixing tank for discharging. Rubber anti-slip pads enhance friction between the device and the ground, preventing slippage or displacement due to vibration during operation. This invention effectively achieves the self-rotating stirring function of the stirring blades, improving mixing efficiency and possessing high practical value. Attached Figure Description
[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams disclosed in the embodiments of this utility model;
[0022] Figure 2 This is the second three-dimensional structural schematic diagram disclosed in the embodiment of this utility model;
[0023] Figure 3 This is a cross-sectional view of the mixing tank disclosed in an embodiment of the present utility model;
[0024] Figure 4 The embodiments disclosed herein Figure 2 A magnified schematic diagram of structure A in the middle.
[0025] In the diagram: 100, mixing tank; 101, support frame; 103, anti-slip mat; 104, material bucket; 105, metering mechanism; 10501, metering pump; 10502, liquid extraction pipe; 10503, liquid delivery pipe; 106, observation window; 107, mixing mechanism; 10701, sleeve; 10702, fixed shaft; 10703, rotating shaft; 10704, stirring blade; 10705, first bevel gear; 10706, machine casing; 10707, motor; 10708, second bevel gear; 108, electric valve; 109, discharge pipe. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figures 1-4 This utility model provides a technical solution: an automatic mixing ratio device for PU coatings, including a mixing tank 100, a support frame 101 installed on the outside of the mixing tank 100, an anti-slip pad 103 installed at the bottom of the support frame 101, a plurality of material buckets 104 arranged on the outside of the support frame 101, a plurality of metering mechanisms 105 installed at the top of the mixing tank 100, each metering mechanism 105 including a metering pump 10501, a liquid extraction pipe 10502 installed at the input end of the metering pump 10501, one end of the liquid extraction pipe 10502 extending to the bottom of the material bucket 104, and the output end of the metering pump 10501... A liquid delivery pipe 10503 is installed, one end of which is connected to the top of the mixing tank 100. A mixing mechanism 107 is installed inside the mixing tank 100. Several material buckets 104 are provided on the outside of the support frame 101 for storing the paint raw materials to be mixed. The metering pump 10501, the liquid extraction pipe 10502 and the liquid delivery pipe 10503 are set to achieve precise extraction and delivery of raw materials, thereby achieving precise adjustment of the paint mixing ratio. The mixing mechanism 107 installed inside the mixing tank 100 achieves efficient stirring and mixing, so that different paints are fully integrated and the mixing effect is improved.
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figures 1-4The mixing mechanism 107 includes a sleeve 10701, the top end of which is rotatably connected to the inner top end of the mixing tank 100. A fixed shaft 10702 is provided on the inner side of the sleeve 10701. A housing 10706 is installed at the middle of the top of the mixing tank 100. The top end of the sleeve 10701 penetrates the inner bottom end of the housing 10706. The top end of the fixed shaft 10702 is fixedly connected to the inner top end of the housing 10706. A rotating shaft 10703 is rotatably connected to the outer side of the sleeve 10701. A stirring blade 10704 is installed at one end of the rotating shaft 10703. A first bevel gear 10705 is fitted onto both the other end of the rotating shaft 10703 and the outer side of the fixed shaft 10702. The rotating shaft 10703 and the fixed shaft 10702 mesh with the first bevel gear 10705. A motor 10707 is installed on one side of the casing 10706. A second bevel gear 10708 is fitted on both the output end of the motor 10707 and the outer top of the sleeve 10701. The motor 10707 and the sleeve 10701 are connected by the second bevel gear 10708. A stirring blade 10704 is installed on one end of the rotating shaft 10703, which enables the stirring blade 10704 to rotate. A first bevel gear 10705 is fitted on both the other end of the rotating shaft 10703 and the outer side of the fixed shaft 10702, which enables the stirring blade 10704 to rotate when the sleeve 10701 rotates. The sleeve 10701 is electrically rotated by the second bevel gear 10708 fitted on both the output end of the motor 10707 and the outer top of the sleeve 10701.
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Please see Figures 1-4 An observation window 106 is installed on one side of the top of the mixing tank 100, and an electric valve 108 is installed at the bottom of the mixing tank 100. A discharge pipe 109 is installed at one end of the electric valve 108. The anti-slip mat 103 is made of rubber and has anti-slip texture at the bottom. The observation window 106 installed on one side of the top of the mixing tank 100 allows operators to easily observe the mixing of the coating inside the mixing tank 100. The electric valve 108 installed at the bottom of the mixing tank 100 enables the discharge switch function. The anti-slip mat 103 is made of rubber to enhance the friction between the device and the ground and prevent the device from sliding or displacing due to vibration or other reasons during operation.
[0032] Specifically, the working principle of this automatic PU coating mixing ratio adjustment device is as follows: During use, several material containers 104 are provided on the outside of the support frame 101 to store the coating raw materials to be mixed. The metering pump 10501, the extraction pipe 10502, and the delivery pipe 10503 are used to accurately extract and transport the raw materials, thereby achieving precise adjustment of the coating mixing ratio. A mixing mechanism 107 is installed inside the mixing tank 100 to achieve efficient stirring and mixing, ensuring that different coatings are fully integrated and improving the mixing effect. A stirring blade 10704 is installed at one end of the rotating shaft 10703, allowing the stirring blade 10704 to rotate. First bevel gears 10705 are fitted on both the other end of the rotating shaft 10703 and the outside of the fixed shaft 10702, enabling the sleeve 10701 to rotate. When the stirring blade 10704 rotates, the output end of the motor 10707 and the outer top of the sleeve 10701 are both fitted with second bevel gears 10708, which realizes the electric rotation of the sleeve 10701. An observation window 106 is installed on one side of the top of the mixing tank 100, which allows the operator to observe the mixing status of the coating inside the mixing tank 100. An electric valve 108 is installed at the bottom of the mixing tank 100 to realize the discharge switch function. The anti-slip pad 103 is made of rubber to enhance the friction between the device and the ground and prevent the device from sliding or displacing due to vibration during operation. This utility model can effectively realize the self-rotating stirring function of the stirring blade, improve the mixing efficiency, and has high practical value.
Claims
1. An automatic mixing ratio adjustment device for PU coatings, characterized in that, The system includes a mixing tank (100), a support frame (101) installed on the outside of the mixing tank (100), an anti-slip pad (103) installed at the bottom of the support frame (101), a plurality of material buckets (104) provided on the outside of the support frame (101), a plurality of metering mechanisms (105) installed at the top of the mixing tank (100), the metering mechanism (105) including a metering pump (10501), a liquid extraction pipe (10502) installed at the input end of the metering pump (10501), one end of the liquid extraction pipe (10502) extending to the bottom of the material bucket (104) inside, a liquid delivery pipe (10503) installed at the output end of the metering pump (10501), one end of the liquid delivery pipe (10503) connected to the top of the mixing tank (100), and a mixing mechanism (107) installed inside the mixing tank (100).
2. The PU coating mixing ratio automatic blending device according to claim 1, characterized in that, The mixing mechanism (107) includes a sleeve (10701), the top end of which is rotatably connected to the top end of the mixing tank (100). A fixed shaft (10702) is provided on the inner side of the sleeve (10701). A housing (10706) is installed at the middle of the top end of the mixing tank (100). The top end of the sleeve (10701) penetrates the bottom end of the housing (10706). The top end of the fixed shaft (10702) is fixedly connected to the top end of the housing (10706). A rotating shaft (10703) is rotatably connected to the outer side of the sleeve (10701). A stirring blade (10704) is installed at one end of the rotating shaft (10703).
3. The PU coating mixing ratio automatic blending device according to claim 2, characterized in that, The other end of the rotating shaft (10703) and the outside of the fixed shaft (10702) are both fitted with a first bevel gear (10705), and the rotating shaft (10703) and the fixed shaft (10702) mesh with each other through the first bevel gear (10705).
4. The PU coating mixing ratio automatic blending device according to claim 2, characterized in that, A motor (10707) is installed on one side of the chassis (10706). A second bevel gear (10708) is fitted on the output end of the motor (10707) and the outer top of the sleeve (10701). The motor (10707) and the sleeve (10701) are connected by the second bevel gear (10708).
5. The automatic mixing ratio adjustment device for PU coating according to claim 1, characterized in that, An observation window (106) is installed on one side of the top of the mixing tank (100).
6. The automatic mixing ratio adjustment device for PU coating according to claim 1, characterized in that, An electric valve (108) is installed at the bottom of the mixing tank (100), and a discharge pipe (109) is installed at one end of the electric valve (108).
7. The PU coating mixing ratio automatic blending device according to claim 1, characterized in that, The anti-slip mat (103) is made of rubber, and the bottom of the anti-slip mat (103) has anti-slip texture.