Mixing and stirring device

Abstract

The utility model relates to a mixing and stirring device which comprises a mixing tank (1) used for filling materials, a stirring mechanism (4) used for stirring the materials and a heating mechanism (3) used for heating the mixing tank (1), and the heating mechanism (3) comprises a heating box (307), a coil pipe (301), a water inlet pipe (305), a recycling water pipe (306) and a circulating pump (304); the heating box (307) is filled with hot water, the coil pipe (301) spirally surrounds the outer side of the mixing tank (1), the lower end of the coil pipe (301) is communicated with the heating box (307) through a water inlet pipe (305), the upper end of the coil pipe (301) is communicated with the heating box (307) through a recycling water pipe (306), and the circulating pump (304) pumps the hot water into the coil pipe (301) at the lower end of the coil pipe (301). The mixing and stirring device has the advantages that the energy consumption is low, the mixing tank can be fully heated, local low temperature caused by hot water short circuit in the mixing tank is prevented, and materials are prevented from being solidified and caked.

Description

Technical Field

[0001] The utility model relates to a stirring and mixing device, in particular to a mixing and stirring device for preventing materials from solidifying in a low-temperature environment. Background Art

[0002] In industrial production, it is often necessary to use a mixing and stirring device to mix and stir chemical materials, mortar, cement, concrete, coatings and other materials with other media. The structure of the traditional mixing and stirring device includes a mixing tank with an upper inlet and a lower outlet, and a stirring paddle is arranged in the middle of the mixing tank. By rotating the stirring paddle, the materials and media can be evenly mixed.

[0003] However, during production in a low-temperature environment, the viscosity of the materials in the mixing tank will increase, and they are prone to solidify and agglomerate, resulting in a decrease in the stirring efficiency.

[0004] The utility model patent with the patent number 202320019271.6 and the patent name of a coagulation-preventing mixing stirrer improved the traditional mixing device for the above problems. The disclosed technical solution is: a structure of a mixing and stirring device with a heating jacket arranged outside the mixing tank, and circulating hot water (hot water) is input into the heating jacket. By using the hot water to heat the materials inside the mixing tank, it is possible to avoid the materials inside the mixing tank from solidifying in a low-temperature situation.

[0005] However, the structure of the above existing mixing and stirring device has defects: ① The heating jacket is a simple cavity that wraps the mixing tank. Therefore, when heating, the hot water needs to fill the entire heating jacket, resulting in a large amount of heat energy consumption; ② The hot water enters the heating jacket from the middle of the heating jacket, which is prone to cause short circuits, resulting in difficulty in heating the upper end, lower end and the side far from the heating box of the mixing tank. The heating is uneven and the effect is poor, and the materials are prone to solidify and agglomerate due to local low temperature. Content of the Utility Model

[0006] The purpose of the utility model is to provide a mixing and stirring device with low energy consumption, which can fully heat the mixing tank, prevent local low temperature due to hot water short circuit inside the mixing tank, and avoid the materials from solidifying and agglomerating.

[0007] The above mixing and stirring device includes a mixing tank 1 for loading materials, a stirring mechanism 4 for stirring materials, and a heating mechanism 3 for heating the mixing tank 1.

[0008] The heating mechanism 3 includes: a heating box 307, a coil pipe 301, a water inlet pipe 305, a water extraction pipe 3051, a recovery water pipe 306, and a circulation pump 304.

[0009] The heating box 307 is used for loading hot water, and the coil pipe 301 is spirally wound around the outside of the mixing tank 1.

[0010] The lower end of the coil pipe 301 is communicated with the water outlet of the circulation pump 304 through the water inlet pipe 305. The water inlet of the circulation pump 304 is communicated with the heating tank 307 through the water extraction pipe 3051. The upper end of the coil pipe 301 is communicated with the heating tank 307 through the recovery water pipe 306.

[0011] During use, the circulation pump 304 pumps the hot water in the heating tank 307 into the coil pipe 301 from the lower end of the coil pipe 301. After the hot water passes through the coil pipe 301, it returns to the heating tank 307 through the recovery water pipe 306 connected to the upper end of the coil pipe 301.

[0012] The circulation pump 304 is used to pump the hot water into the lower end of the coil pipe 301 through the water inlet pipe 305. The hot water flows upward under the drive of the circulation pump 304 to the upper end of the coil pipe 301, and then returns to the heating tank 307 through the recovery water pipe 306 to form a cycle. During the flow of the hot water, heat exchange occurs with the mixing tank 1, that is, the mixing tank 1 can be heated.

[0013] Since the hot water is powered by the circulation pump 304 and flows upward along the coil pipe 301, the phenomenon of hot water short circuit will not occur, so that the heating area of the hot water can cover the entire outer side of the mixing tank 1, the heating is uniform and the effect is good, which can prevent local low temperature of the mixing tank and avoid solidification and caking of materials.

[0014] Preferably, it further includes a heating sleeve 302 arranged outside the coil pipe 301. The upper and lower ends of the heating sleeve 302 are respectively fixedly connected to the outer side wall of the mixing tank 1 through sealing rings 3022, and an insulating cavity 300 for accommodating the coil pipe 301 is formed by the heating sleeve 302, the sealing rings 3022 and the outer side wall of the mixing tank 1. The heating sleeve 302 can play a heat preservation role.

[0015] Preferably, a heat insulating pad 3021 is arranged inside the heating sleeve 302. The heat insulating pad 3021 wraps the outside of the coil pipe 301, and the heat insulating pad 3021 can play a heat preservation role together with the heating sleeve 302.

[0016] Preferably, a plurality of electric heating tubes 308 are installed inside the heating tank 307, and the electric heating tubes 308 are evenly distributed for heating hot water.

[0017] Preferably, a water replenishing port 39 is arranged on the upper side of the heating tank 307 for replenishing hot water.

[0018] Preferably, the stirring mechanism 4 includes: a rotating rod 402, a driving motor 401, and a plurality of stirring blades 404.

[0019] The rotating rod 402 coincides with the central line of the mixing tank 1, and the upper end of the rotating rod 402 is fixedly connected to the rotating end of the driving motor 401 located above the mixing tank 1. The driving motor 401 provides power for the rotating rod 402, enabling the rotating rod 402 to rotate about its central line.

[0020] Each stirring blade 404 is evenly fixed on the rotating rod 402 and is driven by the rotating rod 402 to rotate and stir the materials.

[0021] Preferably, the stirring mechanism 4 further includes a scraping plate 403. The scraping plate 403 is a long rod that fits the side wall of the mixing tank 1 and is fixedly connected to the rotating rod 402 through two transverse connecting rods. It is driven by the rotating rod 402 to rotate along the side wall of the mixing tank 1, scraping off the materials on the side wall of the mixing tank 1 and making the materials heated by the coil pipe 301 move inward, which is more conducive to delivering the heat brought by the coil pipe 301 to the middle of the tank body 1.

[0022] Preferably, a stirring grid 405 is fixedly arranged at the lower end of the rotating rod 402 and is driven to rotate by the rotating rod 402. The stirring grid 405 has multiple holes and can disperse the materials at the bottom of the mixing tank 1 to prevent them from agglomerating under extrusion at the conical part at the bottom of the mixing tank 1.

[0023] Preferably, each stirring blade 404 has multiple blades. From a top-down perspective, there is an angle between the blades of two adjacent stirring blades 404, which can increase the contact opportunity between the stirring blade 404 and the materials, enabling the materials to be separated by the blades during the falling process and avoiding material agglomeration.

[0024] Preferably, a thermometer 2 is arranged above the mixing tank 1 for measuring the temperature of the materials in the mixing tank 1, facilitating the staff to judge the heating condition of the materials. Description of the Drawings

[0025] Figure 1 is the structural illustration of the mixing and stirring device seen from the outside;

[0026] Figure 2 is the sectional view of the mixing and stirring device taken along the section line A - A;

[0027] Figure 3 is the structural illustration of the heating mechanism;

[0028] Figure 4 is the internal structural illustration of the mixing tank;

[0029] Figure 5 is the internal structural illustration of the heating box.

[0030] In the figure: 1 - mixing tank; 101 - upper cover; 102 - discharge port; 103 - feed inlet; 2 - thermometer; 3 - heating mechanism; 300 - heat insulation cavity; 301 - coil pipe; 302 - heating jacket; 3021 - heat insulation pad; 3022 - sealing ring; 303 - fixing bracket; 304 - circulation pump; 305 - water inlet pipe; 306 - recycling water pipe; 307 - heating box; 3071 - support; 308 - electric heating tube; 309 - water replenishing port; 4 - stirring mechanism; 401 - driving motor; 402 - rotating rod; 403 - scraping plate; 404 - stirring paddle; 405 - stirring grid. Detailed implementation mode

[0031] The embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings. The following description is a specific implementation of the claims of the present utility model.

[0032] Embodiment

[0033] Figure 1 The figure shows the structure of the mixing and stirring device as seen from the outside; Figure 2 The figure shows the sectional structure of the mixing and stirring device cut along the section line A - A.

[0034] Combined with Figure 1 、 2 It can be seen that the mixing and stirring device includes: a mixing tank 1, a heating mechanism 3, and a stirring mechanism 4.

[0035] The mixing tank 1 is a cylindrical tank body for filling materials. The upper part of the mixing tank 1 is closed by an upper cover 101, and a feed inlet 103 for feeding is provided on the upper cover 101. The lower part of the mixing tank 1 becomes narrower to form a cone, and a discharge port 102 for discharging is provided.

[0036] As Figure 2 shown, the heating mechanism 3 includes: a heating box 307, a plurality of electric heating tubes 308, a coil pipe 301, a heating jacket 302, a water inlet pipe 305, a water extraction pipe 3051, a recycling water pipe 306, and a circulation pump 304. Figure 3 The figure shows a structural explanatory diagram of the heating mechanism 3. To facilitate the display of the structure of the coil pipe 301, Figure 3 the figure shows the sectional structure of the mixing tank 1 and the water tank 307.

[0037] The heating box 307 is filled with hot water. Figure 5 is Figure 3 an enlarged structural explanatory diagram of part B in the figure, showing the internal structure of the heating box 307. As Figure 5 shown, two rows and four electric heating tubes 308 are evenly installed inside the heating box 307. The electric heating tubes are in a "U" - shaped bent structure, which can evenly heat the water in the heating box 307 to keep it at a preset temperature of hot water.

[0038] AsFigure 5 As shown, a water replenishing port 309 for supplementing hot water is provided at the top of the heating tank 307. The water replenishing port is threaded and can be installed with a water inlet pipe or a dust cover.

[0039] A support 3071 for support and reinforcement is also provided outside the heating tank 307.

[0040] As Figure 1 、 2 shown, the coil pipe 301 is spirally wound around the outside of the mixing tank 1 and closely adheres to the side wall of the mixing tank 1.

[0041] The lower end of the coil pipe 301 is communicated with the water outlet of the circulation pump 304 through the water inlet pipe 305. The water inlet of the circulation pump 304 is communicated with the heating tank 307 through the water extraction pipe 3051. The upper end of the coil pipe 301 is communicated with the heating tank 307 through the recovery water pipe 306.

[0042] The circulation pump 304 pumps the hot water at a preset temperature in the heating tank 307 into the lower end of the coil pipe 301 through the water inlet pipe 305. The hot water flows upward in the coil pipe 301 and heats the mixing tank 1 during the process of flowing to the upper end of the coil pipe 301. The heated water returns to the heating tank 307 through the recovery water pipe 306 and is heated to the preset temperature by the electric heating pipe 308 to form a cycle.

[0043] As Figure 2 shown, a heating jacket 302 for heat preservation is provided outside the coil pipe 301 to surround the coil pipe 301. Conical sealing rings 3022 are provided at the upper and lower ends of the heating jacket 302. The heating jacket 302 is fixedly connected to the outer side wall of the mixing tank 1 through the sealing rings 3022, and a heat insulation cavity 300 for accommodating the coil pipe 301 is formed by the heating jacket 302, the sealing rings 3022 and the outer side wall of the mixing tank 1. A fixing frame 303 for providing support is also provided at the lower part of the heating jacket 302.

[0044] As Figure 2 shown, a heat insulation pad 3021 is provided between the inner side of the heating jacket 302 and the outer side of the coil pipe 201, which can further preserve heat.

[0045] The stirring mechanism 4 is used for stirring the materials in the mixing tank 1 and includes: a driving motor 401 located above the upper cover 1, and a rotating rod 402, three stirring blades 404, a scraper 403, and a stirring grid 405 located inside the mixing tank 1.

[0046] Figure 4 The internal structure of the mixing tank is shown. As Figure 4 shown, the rotating rod 402 coincides with the center line of the mixing tank 1 (L1, L2). The upper end of the rotating rod 402 passes through the upper cover and is fixedly connected to the rotating end of the driving motor 401 located above the mixing tank 1, so that the rotating rod 402 can rotate around its center line.

[0047] Combined Figure 2 and Figure 4 viewed, the stirring paddle 404 is composed of four vertical blades, and each stirring paddle 404 is evenly fixed on the rotating rod 402, and the distance between two adjacent stirring paddles 404 is equal. From Figure 4 it can be seen that if viewed from a top-down perspective, the blades of two adjacent stirring paddles 404 do not overlap and have an included angle, which can increase the contact opportunity between the stirring paddle 404 and the material, so that the material is separated by the blades during the falling process, avoiding material caking.

[0048] Combined Figure 2 and Figure 4 viewed, a stirring grid 405 is fixedly arranged at the lower end of the rotating rod 402. The stirring grid 405 is a grid with multiple holes and is located near the discharge port 102. The rotating stirring grid 405 can disperse the material and prevent the material from caking.

[0049] The scraper 403 is a long rod-shaped that fits the side wall of the mixing tank 1. One side of it facing the rotating rod 402 is fixedly connected to the rotating rod 402 through two transverse connecting rods, and it can move along the side wall of the mixing tank 1 to scrape off the material and prevent it from sticking to the side wall of the mixing tank 1.

[0050] As Figures 1 - 3 shown, a thermometer 2 is arranged on the upper side of the mixing tank 1 for measuring the temperature of the material in the mixing tank 1.

[0051] During use, the electric heating tube 308 is used to heat the hot water in the heating tank 307, and the circulating pump 304 is used to pump the hot water into the lower end of the coil 301 through the water inlet pipe 305. The hot water flows upward under the drive of the circulating pump 304 to the upper end of the coil 301, and then returns to the heating tank 307 through the recovery water pipe 306 and is heated by the electric heating tube 308 again to form a cycle. During the flow of the hot water, heat exchange occurs with the mixing tank 1 to heat the mixing tank 1.

[0052] During the process of stirring by the stirring mechanism 4, the light plate 403 scrapes off the material on the side wall of the mixing tank 1, making the material heated by the coil 301 move inward, which is more conducive to delivering the heat brought by the coil 301 to the middle of the tank body 1. The stirring grid 405 can disperse the material at the bottom of the mixing tank 1 and prevent it from being extruded and caked at the bottom cone of the mixing tank 1.

[0053] Since the hot water is powered by the circulating pump 304 and flows upward along the coil 301, the phenomenon of hot water short circuit will not occur, so that the heating area of the hot water can cover the entire outside of the mixing tank 1, with uniform heating and good effect, which can prevent local low temperature in the mixing tank and avoid material solidification and caking.

[0054] Since the inner volume of the coil pipe 301 is small and the coil pipe 301 is insulated by the heating jacket 302 and the heat insulation pad 3021, the amount of hot water used can be reduced and the heating effect can be ensured, making it more energy-saving and environmentally friendly.

[0055] By using the thermometer 2 to measure the temperature of the material in the mixing tank 1, it is convenient for the staff to judge the heating condition of the material. Since the hot water flows upward along the coil pipe and the material located in the upper part of the mixing tank 1 has a short heat exchange time with the hot water, it should be the material with the lowest temperature in the mixing tank 1. That is, if the temperature of the material in the upper part of the mixing tank 1 measured by the thermometer 2 is stable and the temperature difference between the material and the hot water is less than a certain threshold value, it can be determined that the material in the mixing tank 1 has been fully heated.

[0056] The utility model has a simple structure, is easy to use, consumes less hot water, has uniform heating, and can prevent the material from solidifying and caking due to local low temperature in the mixing tank.

Claims

1. Mixing and stirring device, including a mixing tank (1) for loading materials and a stirring mechanism (4) for stirring the materials, It is characterized in that a heating mechanism (3) for heating the mixing tank (1), including: a heating box (307), a coil pipe (301), a water inlet pipe (305), a water extraction pipe (3051), a recovery water pipe (306), and a circulation pump (304), the heating box (307) is used for loading hot water, and the coil pipe (301) is spirally wound around the outside of the mixing tank (1), the lower end of the coil pipe (301) is communicated with the water outlet of the circulation pump (304) through the water inlet pipe (305), the water inlet of the circulation pump (304) is communicated with the heating box (307) through the water extraction pipe (3051), and the upper end of the coil pipe (301) is communicated with the heating box (307) through the recovery water pipe (306).

2. The mixing and stirring device according to claim 1, wherein, It also includes a heating sleeve (302) arranged outside the coil pipe (301). The upper and lower ends of the heating sleeve (302) are respectively fixedly connected to the outer side wall of the mixing tank (1) through sealing rings (3022), and an insulating cavity (300) for accommodating the coil pipe (301) is formed by the heating sleeve (302), the sealing rings (3022), and the outer side wall of the mixing tank (1).

3. The mixing and stirring device according to claim 2, characterized in that, An insulating pad (3021) is arranged inside the heating sleeve (302), and the insulating pad (3021) wraps around the outside of the coil pipe (301).

4. The mixing and stirring device according to claim 1, wherein A plurality of electric heating tubes (308) are installed inside the heating box (307), and each of the electric heating tubes (308) is evenly distributed.

5. The mixing and stirring device according to claim 4, wherein A water replenishing port (39) is arranged on the upper side of the heating box (307).

6. The mixing and stirring device according to claim 1, characterized in that, The stirring mechanism (4) includes: a rotating rod (402), a driving motor (401), and a plurality of stirring blades (404), the rotating rod (402) coincides with the center line of the mixing tank (1), and the upper end of the rotating rod (402) is fixedly connected to the rotating end of the driving motor (401) located above the mixing tank (1), each of the stirring blades (404) is evenly fixed on the rotating rod (402).

7. The mixing and stirring device according to claim 6, characterized in that, The stirring mechanism (4) also includes a scraper (403). The scraper (403) is a long rod that fits the side wall of the mixing tank (1) and is fixedly connected to the rotating rod (402) through two transverse connecting rods.

8. The mixing and stirring device according to claim 7, wherein, A stirring grid (405) is fixedly arranged at the lower end of the rotating rod (402), and the stirring grid (405) has a plurality of holes.

9. The mixing and stirring device according to claim 6, characterized in that Each of the stirring blades (404) has a plurality of vertical blades. From a top view, there is an included angle between the blades of two adjacent stirring blades (404).

10. The mixing and stirring device according to any one of claims 1 to 9, characterized in that, A thermometer (2) is arranged on the upper side of the mixing tank (1).

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