A high-viscosity hydroxypropyl methylcellulose mixing apparatus and method

Abstract

This invention discloses a high-viscosity hydroxypropyl methylcellulose (HMCMC) mixing device and method, comprising an outer drum and an inner drum. A water tank is installed on the top of the outer drum, and a heating rod is installed inside the water tank. One end of the inner drum is connected to a continuous water supply mechanism, and a water pump is installed on the top of the water tank. An auxiliary mixing mechanism is provided at the bottom of the inner drum, and a first uniform mixing plate is provided inside the inner drum. This invention utilizes the principle that HMCMC is insoluble in hot water and will not clump together in hot water by setting up a water tank that can be heated, thereby improving the mixing effect of high-viscosity HMCMC. After waiting for cooling or adding cold water, high-viscosity HMCMC with a certain viscosity is obtained. The auxiliary mixing mechanism assists in mixing high-viscosity HMCMC and water, improving the uniformity of the mixing.

Description

Technical Field

[0001] This invention belongs to the technical field of cellulose production equipment, specifically relating to a high-viscosity hydroxypropyl methylcellulose mixing device and method. Background Technology

[0002] High-concentration hydroxypropyl methylcellulose (HPMC) is a common thickener, available in cold-water soluble and hot-water soluble forms. Cold-water soluble HPMC can be used in putty powder, mortar, liquid adhesives, liquid coatings, and daily chemical products, while hot-water soluble HPMC is generally used in dry powder products. When used in putty powder, hot-soluble 100,000 viscosity HPMC is directly mixed with the dry powder at a ratio of 0.3%, and water is added directly before use. Because the cellulose is completely and evenly mixed with the putty powder, clumping will not occur. When used in the preparation of construction adhesives, hot-water soluble products will clump when directly added to cold water; therefore, 200,000 viscosity cold-water soluble cellulose is selected. If hot-water soluble HPMC is used, it must be mixed with water at a temperature above 50°C.

[0003] In existing technologies, high-viscosity hydroxypropyl methylcellulose is usually mixed with water using ordinary stirring devices. However, high-viscosity hydroxypropyl methylcellulose is prone to clumping when in contact with water, and ordinary stirring devices cannot quickly and thoroughly mix high-viscosity hydroxypropyl methylcellulose with water.

[0004] Chinese patent CN217410410U discloses a mixing device for proportioning hydroxypropyl methylcellulose, comprising a movable plate and a placement plate. A first support plate is fixedly connected to the top of the placement plate, and a mixing chamber shell is fixedly connected to the top of the first support plate. A motor is fixedly connected to the front of the first support plate. This mixing device for proportioning hydroxypropyl methylcellulose allows for simultaneous mixing and cleaning of the inner wall, preventing dirt buildup and making it more convenient for users.

[0005] However, this device can only scrape off hydroxypropyl methylcellulose from the inner wall, and its effect on improving the mixing degree of hydroxypropyl methylcellulose and water is not obvious, especially for high-viscosity hydroxypropyl methylcellulose, it cannot quickly mix high-viscosity hydroxypropyl methylcellulose with water. Summary of the Invention

[0006] The purpose of this invention is to provide a high-viscosity hydroxypropyl methylcellulose mixing device and method, which solves the problems mentioned in the background art by adding an auxiliary mixing device and a continuous water supply mechanism.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A high-viscosity hydroxypropyl methylcellulose mixing device includes an outer drum and an inner drum. A rotating seat for rotating the inner drum is fixed at one end of the inner cavity of the outer drum. A water tank is installed on the top of the outer drum, and a heating rod is installed inside the water tank. A continuous water supply mechanism is connected to one end of the inner drum, and a water pump is installed on the top of the water tank. An auxiliary mixing mechanism is provided at the bottom of the inner drum. A first uniform material plate is provided inside the inner drum. A drive motor for driving the inner drum to rotate is installed on one side of the outer drum by screws. A drive mechanism for driving the first uniform material plate to move horizontally is provided inside the inner drum. Supports are installed at the bottom of both ends of the outer drum. Inlet and outlet ports for high-viscosity hydroxypropyl methylcellulose are provided on the outer walls of both the inner and outer drums.

[0009] The continuous water supply mechanism includes a fixed rod, a connecting rod is fixedly connected to the bottom of the fixed rod, a water inlet assembly of the connecting rod is provided at one end of the inner roller, and the auxiliary mixing mechanism includes a second uniform material plate, and an installation mechanism for the second uniform material plate is provided inside the inner roller.

[0010] The installation mechanism includes counterweights, and two counterweights are provided. Both ends of the inner roller are mounted with disc-shaped mounting plates by screws. Each mounting plate has an annular groove on one side, and the two counterweights are slidably connected in the two annular grooves respectively.

[0011] The counterweights are arranged in a ring-shaped fan, and the two ends of the second material distribution plate are fixedly connected to one side of the two counterweights respectively.

[0012] Preferably, the water inlet assembly includes an L-shaped connector, one end of which is rotatably connected to one end of the inner roller, and the other end of which is fixedly connected to a connecting rod. Both the connecting rod and the fixing rod are hollow. The top end of the fixing rod passes through the water tank and is fixedly connected to the water tank. A water supply assembly is provided inside the inner roller.

[0013] Preferably, the water supply assembly includes a water supply chamber and a water valve. The water supply chamber is located at one end of the inner roller. One end of the connector passes through the inner roller and communicates with the water supply chamber. The top end of the fixing rod is connected to the water pump through a water pipe. The other end of the water pump communicates with the inner cavity of the water tank. The water valve is installed on the water pipe connecting the fixing rod and the water pump.

[0014] Preferably, the auxiliary mixing mechanism further includes a material passage hole, the second uniform material plate is L-shaped, the material passage hole is opened on one side of the vertical plate of the second uniform material plate, the horizontal plate of the second uniform material plate is arc-shaped, and the arc-shaped surface of the horizontal plate of the second uniform material plate is in contact with the inner wall of the inner roller.

[0015] Preferably, the driving mechanism includes guide rods, and two guide rods are provided. The two ends of the two guide rods are respectively fixedly connected to two mounting plates, and the two guide rods pass through both sides of the first uniform material plate and are slidably connected to the first uniform material plate.

[0016] Preferably, the guide rod is hollow, one end of the guide rod passes through one of the mounting plates and communicates with the water supply chamber, the outer wall of the guide rod is provided with a water supply hole, and a plurality of material distribution holes are provided on one side of the first material distribution plate.

[0017] Preferably, the driving mechanism further includes a screw, the two ends of which are rotatably connected to two mounting plates respectively. One end of the screw passes through the first material leveling plate and is threadedly connected to the first material leveling plate. A rotary motor for driving the screw to rotate is installed on one side of one of the mounting plates by screws.

[0018] Based on the above description of a high-viscosity hydroxypropyl methylcellulose mixing device, the present invention also provides a method of using the high-viscosity hydroxypropyl methylcellulose mixing device, comprising the following steps:

[0019] S1. High-viscosity hydroxypropyl methylcellulose is supplied to the inner drum through the inlet and outlet. By starting the drive motor, the inner drum rotates in the rotating seat, and the high-viscosity hydroxypropyl methylcellulose is mixed evenly during the rotation.

[0020] S2. By starting the rotating motor, the first uniform plate moves horizontally, and the liquid enters and exits in the uniform holes of the uniform plate. By increasing the flow speed of the liquid and changing the flow direction of the liquid, the mixing effect of high viscosity hydroxypropyl methylcellulose is improved.

[0021] S3. When the inner drum rotates, the two counterweights drive the second uniform plate to always be located at the bottom of the inner drum. The high viscosity hydroxypropyl methylcellulose that cannot be fully mixed near the inner wall of the inner drum passes over the horizontal plate of the second uniform plate and hits the material passage hole on the vertical plate of the second uniform plate, causing the high viscosity hydroxypropyl methylcellulose to change its direction and speed of movement, making it easier to mix.

[0022] S4. During the mixing process, the hot water supply in the water tank is controlled by energizing the heating rod. Hot water at a temperature above 50 degrees Celsius is used to mix with high-viscosity hydroxypropyl methylcellulose to prevent clumping. After the mixture is evenly mixed, cold water is introduced to cool it down.

[0023] The high-viscosity hydroxypropyl methylcellulose mixing device and method proposed in this invention have the following advantages compared with the prior art:

[0024] 1. This invention utilizes a water tank that can be heated to make use of the principle that hydroxypropyl methylcellulose is insoluble in hot water and will not clump together in hot water. This allows high-viscosity hydroxypropyl methylcellulose to be mixed in hot water, improving the mixing effect. Then, by waiting for the water to cool down or adding cold water, high-viscosity hydroxypropyl methylcellulose with viscosity is obtained.

[0025] 2. This invention assists in the mixing of high-viscosity hydroxypropyl methylcellulose and water by setting up an auxiliary mixing mechanism. In the flow state, the first uniform mixing plate moves horizontally, which accelerates the flow and changes the flow direction locally, thereby improving the uniformity of mixing. During the rotation of the inner drum, the liquid near the bottom inner wall of the inner drum directly impacts the second uniform mixing plate, preventing the high-viscosity hydroxypropyl methylcellulose from being mixed unevenly under the same speed and direction. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the internal structure of the inner cylinder of the present invention;

[0027] Figure 2 This is a schematic diagram of the continuous water supply mechanism of the present invention;

[0028] Figure 3 This is a schematic diagram showing the position of the auxiliary mixing mechanism of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0030] Figure 5 This is a schematic diagram showing the location and structure of the water supply chamber of the present invention;

[0031] Figure 6 This is a schematic diagram of the external structure of the present invention.

[0032] In the diagram: 1. Outer roller; 2. Inner roller; 3. Rotating seat; 4. Water tank; 5. Heating rod; 6. Continuous water supply mechanism; 7. Water pump; 8. Auxiliary mixing mechanism; 9. First uniform material plate; 10. Drive motor; 11. Support; 12. Inlet / outlet; 601. Fixed rod; 602. Connecting rod; 801. Second uniform material plate; 802. Mounting mechanism; 603. Connector; 604. Water supply chamber; 605. Water valve; 803. Material passage hole; 804. Counterweight; 805. Mounting plate; 806. Annular groove; 1001. Guide rod; 606. Water supply hole; 901. Uniform material hole; 607. Screw; 608. Rotating motor. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The specific embodiments described herein are merely used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] This invention provides, for example Figure 1-6 The high-viscosity hydroxypropyl methylcellulose mixing device shown includes an outer roller 1 and an inner roller 2. A rotating seat 3 for rotating the inner roller 2 is fixed at one end of the inner cavity of the outer roller 1. A water tank 4 is installed on the top of the outer roller 1. A heating rod 5 is installed in the water tank 4. A continuous water supply mechanism 6 is connected to one end of the inner roller 2. A water pump 7 is installed on the top of the water tank 4. An auxiliary mixing mechanism 8 is provided at the bottom of the inner roller 2. A first uniform material plate 9 is provided in the inner roller 2. A drive motor 10 for driving the inner roller 2 to rotate is installed on one side of the outer roller 1 by screws. A drive mechanism for driving the first uniform material plate 9 to move horizontally is provided in the inner roller 2. Supports 11 are installed at the bottom of both ends of the outer roller 1. Inlet and outlet ports 12 for high-viscosity hydroxypropyl methylcellulose are provided on the outer walls of both the inner roller 2 and the outer roller 1.

[0035] By setting up a water tank 4 and a heating rod 5, the water supplied to the water tank 4 by the external water supply system can be driven by the external system to make the heating rod 5 work, so that the water in the tank is heated to more than 50 degrees Celsius. When the heated water is supplied into the inner cylinder, it is mixed with high viscosity hydroxypropyl methylcellulose, making it less likely to clump together.

[0036] The continuous water supply mechanism 6 includes a fixed rod 601, with a connecting rod 602 fixedly connected to the bottom of the fixed rod 601. A water inlet assembly for the connecting rod 602 is provided at one end of the inner roller 2. The auxiliary mixing mechanism 8 includes a second uniform material plate 801, and an installation mechanism 802 for the second uniform material plate 801 is provided inside the inner roller 2. By setting the fixed rod 601, the water pump 7 forces water into the water supply chamber 604 through the fixed rod 601 and the connecting rod.

[0037] The mounting mechanism 802 includes two counterweights 804. Both ends of the inner roller 2 are fitted with disc-shaped mounting plates 805 via screws. Each mounting plate 805 has an annular groove 806 on one side. The two counterweights 804 are slidably connected within the two annular grooves 806. By setting the counterweights 804, the second material distribution plate 801 is always positioned at the bottom of the inner roller 2 as it rotates.

[0038] The counterweight 804 is arranged in a ring-shaped fan, and the two ends of the second material distribution plate 801 are fixedly connected to one side of the two counterweights 804 respectively.

[0039] The water inlet assembly includes an L-shaped connector 603. One end of the connector 603 is rotatably connected to one end of the inner roller 2, and the other end of the connector 603 is fixedly connected to the connecting rod 602. Both the connecting rod 602 and the fixing rod 601 are hollow. The top end of the fixing rod 601 passes through the water tank 4 and is fixedly connected to the water tank 4. A water supply assembly is provided inside the inner roller 2.

[0040] By setting a rotatable connector 603, the connector 603 rotates during the rotation of the inner roller 2 without affecting the water supply. This allows for simultaneous mixing and water supply, replacing the need for one-time water addition and improving the mixing effect.

[0041] The water supply assembly includes a water supply chamber 604 and a water valve 605. The water supply chamber 604 is located at one end of the inner roller 2. One end of the connector 603 passes through the inner roller 2 and is connected to the water supply chamber 604. The top end of the fixing rod 601 is connected to the water pump 7 through a water pipe. The other end of the water pump 7 is connected to the inner cavity of the water tank 4. The water valve 605 is installed on the water pipe connecting the fixing rod 601 and the water pump 7.

[0042] By setting water valve 605, the amount of water supplied can be controlled by opening and closing water valve 605.

[0043] The auxiliary mixing mechanism 8 also includes a feed hole 803. The second uniform material plate 801 is L-shaped, and the feed hole 803 is located on one side of the vertical plate of the second uniform material plate 801. The horizontal plate of the second uniform material plate 801 is arc-shaped, and the arc-shaped surface of the horizontal plate of the second uniform material plate 801 is in contact with the inner wall of the inner roller 2. By setting the feed hole 803, when the inner roller 2 rotates, the high-viscosity hydroxypropyl methylcellulose located near the inner wall of the inner roller 2 passes through the feed hole 803 due to the inertia of rotation, changing its local flow velocity and flow direction, thus assisting in mixing.

[0044] The driving mechanism includes guide rods 1001, of which two guide rods 1001 are provided. The two ends of the two guide rods 1001 are fixedly connected to two mounting plates 805 respectively. The two guide rods 1001 pass through both sides of the first uniform material plate 9 and are slidably connected to the first uniform material plate 9. By providing guide rods 1001, the rotation of the first uniform material plate 9 is prevented when the screw 607 rotates, thereby enabling the first uniform material plate 9 to move horizontally.

[0045] The guide rod 1001 is hollow, with one end passing through one of the mounting plates 805 and communicating with the water supply chamber 604. A water supply hole 606 is provided on the outer wall of the guide rod 1001, and several material distribution holes 901 are provided on one side of the first material distribution plate 9. By making the guide rod 1001 hollow, it serves to guide the first material distribution plate 9 while also supplying water to the inner cylinder.

[0046] The drive mechanism also includes a screw 607, with both ends of the screw 607 rotatably connected to two mounting plates 805 respectively. One end of the screw 607 passes through and is threadedly connected to the first uniform material plate 9. A rotary motor 608 for driving the screw 607 is mounted on one side of one of the mounting plates 805 by screws. When the rotary motor 608 is started, the screw 607 rotates, and the first uniform material plate 9 moves horizontally within the inner roller 2 under the limit of the guide rod 1001. High-viscosity hydroxypropyl methylcellulose passes through the uniform material holes 901, improving the mixing effect by increasing its flow direction and speed.

[0047] Based on the above description of a high-viscosity hydroxypropyl methylcellulose mixing device, the present invention also provides a method of using the high-viscosity hydroxypropyl methylcellulose mixing device, comprising the following steps:

[0048] S1. High-viscosity hydroxypropyl methylcellulose is supplied to the inner drum through the inlet and outlet. By starting the drive motor, the inner drum rotates in the rotating seat, and the high-viscosity hydroxypropyl methylcellulose is mixed evenly during the rotation.

[0049] S2. By starting the rotating motor, the screw rotates, driving the first uniform material plate to move horizontally under the action of the guide rod. During the movement, the first uniform material plate scrapes the liquid in the inner drum, causing the liquid to enter and exit in the uniform material holes of the uniform material plate. By increasing the flow speed of the liquid and changing the flow direction of the liquid, the mixing effect of high viscosity hydroxypropyl methylcellulose is improved.

[0050] S3. When the inner drum rotates, the counterweight slides in the annular groove under the action of gravity, so that the two counterweights drive the second uniform plate to always be at the bottom of the inner drum. At this time, under the rotational inertia, the high viscosity hydroxypropyl methylcellulose that cannot be fully mixed close to the inner wall of the inner drum passes over the horizontal plate of the second uniform plate and hits the material passage hole on the vertical plate of the second uniform plate, so that the high viscosity hydroxypropyl methylcellulose changes the direction and speed of movement, making it easier to mix.

[0051] S4. During the mixing process, the hot water supply in the water tank is controlled by energizing the heating rod. Hot water above 50 degrees Celsius is used to mix with high-viscosity hydroxypropyl methylcellulose to prevent clumping. After uniform mixing, cold water is introduced to cool it down. When hot water needs to be supplied to the inner drum, the water pump is started, which sends water through the fixed rod, connecting rod, and connector to the water supply chamber. The water then flows into the inner drum through the water supply hole of the guide rod. During the water supply process, the inner drum does not need to be stopped to add water. The mixed high-viscosity hydroxypropyl methylcellulose is discharged from the inlet and outlet. The heating of cold and hot water can be controlled by whether the heating rod is working.

[0052] This invention utilizes a water tank capable of being heated to allow high-viscosity hydroxypropyl methylcellulose to be mixed in hot water, taking advantage of the principle that hydroxypropyl methylcellulose is insoluble in hot water and will not clump together. An auxiliary mixing mechanism is used to further enhance the mixing effect. By waiting for the water to cool down or adding cold water, a high-viscosity hydroxypropyl methylcellulose with a specific viscosity is obtained.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-viscosity hydroxypropyl methylcellulose mixing device, characterized in that: The device includes an outer roller (1) and an inner roller (2). One end of the inner cavity of the outer roller (1) is fixed with a rotating seat (3) for the inner roller (2) to rotate. A water tank (4) is installed on the top of the outer roller (1). A heating rod (5) is installed in the water tank (4). One end of the inner roller (2) is connected to a continuous water supply mechanism (6). A water pump (7) is installed on the top of the water tank (4). An auxiliary mixing mechanism (8) is provided at the bottom of the inner roller (2). A first uniform material plate (9) is provided in the inner roller (2). A drive motor (10) for driving the inner roller (2) to rotate is installed on one side of the outer roller (1) by screws. A drive mechanism for driving the first uniform material plate (9) to move horizontally is provided in the inner roller (2). Supports (11) are installed at the bottom of both ends of the outer roller (1). The outer walls of the inner roller (2) and the outer roller (1) are provided with inlet and outlet ports (12) for high viscosity hydroxypropyl methylcellulose. The continuous water supply mechanism (6) includes a fixed rod (601), and a connecting rod (602) is fixedly connected to the bottom of the fixed rod (601). A water inlet assembly of the connecting rod (602) is provided at one end of the inner roller (2). The auxiliary mixing mechanism (8) includes a second uniform material plate (801), and an installation mechanism (802) for the second uniform material plate (801) is provided inside the inner roller (2). The installation mechanism (802) includes a counterweight (804), and two counterweights (804) are provided. Both ends of the inner roller (2) are fitted with disc-shaped mounting plates (805) by screws. Each mounting plate (805) has an annular groove (806) on one side. The two counterweights (804) are slidably connected in the two annular grooves (806). The counterweight (804) is arranged in a ring-shaped fan, and the two ends of the second material distribution plate (801) are respectively fixedly connected to one side of the two counterweights (804).

2. The high-viscosity hydroxypropyl methylcellulose mixing device according to claim 1, characterized in that: The water inlet assembly includes an L-shaped connector (603), one end of which is rotatably connected to one end of the inner roller (2), and the other end of which is fixedly connected to a connecting rod (602). The connecting rod (602) and the fixing rod (601) are both hollow. The top end of the fixing rod (601) passes through the water tank (4) and is fixedly connected to the water tank (4). A water supply assembly is provided inside the inner roller (2).

3. The high-viscosity hydroxypropyl methylcellulose mixing device according to claim 2, characterized in that: The water supply assembly includes a water supply chamber (604) and a water valve (605). The water supply chamber (604) is located at one end of the inner roller (2). One end of the connector (603) passes through the inner roller (2) and is connected to the water supply chamber (604). The top end of the fixing rod (601) is connected to the water pump (7) through a water pipe. The other end of the water pump (7) is connected to the inner cavity of the water tank (4). The water valve (605) is installed on the water pipe connecting the fixing rod (601) and the water pump (7).

4. The high-viscosity hydroxypropyl methylcellulose mixing device according to claim 3, characterized in that: The auxiliary mixing mechanism (8) also includes a material passage hole (803). The second uniform material plate (801) is L-shaped. The material passage hole (803) is opened on one side of the vertical plate of the second uniform material plate (801). The horizontal plate of the second uniform material plate (801) is arc-shaped. The arc-shaped surface of the horizontal plate of the second uniform material plate (801) is in contact with the inner wall of the inner roller (2).

5. The high-viscosity hydroxypropyl methylcellulose mixing device according to claim 4, characterized in that: The driving mechanism includes guide rods (1001), and there are two guide rods (1001). The two ends of the two guide rods (1001) are fixedly connected to two mounting plates (805) respectively. The two guide rods (1001) pass through both sides of the first uniform material plate (9) and are slidably connected to the first uniform material plate (9).

6. The high-viscosity hydroxypropyl methylcellulose mixing device according to claim 5, characterized in that: The guide rod (1001) is hollow. One end of the guide rod (1001) passes through one of the mounting plates (805) and is connected to the water supply chamber (604). A water supply hole (606) is opened on the outer wall of the guide rod (1001). A plurality of material distribution holes (901) are opened on one side of the first material distribution plate (9).

7. The high-viscosity hydroxypropyl methylcellulose mixing device according to claim 6, characterized in that: The driving mechanism also includes a screw (607), the two ends of which are rotatably connected to two mounting plates (805) respectively. One end of the screw (607) passes through the first material equalization plate (9) and is threadedly connected to the first material equalization plate (9). A rotary motor (608) for driving the screw (607) to rotate is installed on one side of one of the mounting plates (805) by screws.

8. A method of using a high-viscosity hydroxypropyl methylcellulose mixing device according to any one of claims 1-7, characterized in that: Includes the following steps: S1. High-viscosity hydroxypropyl methylcellulose is supplied to the inner drum through the inlet and outlet. By starting the drive motor, the inner drum rotates in the rotating seat, and the high-viscosity hydroxypropyl methylcellulose is mixed evenly during the rotation. S2. By starting the rotating motor, the first uniform plate moves horizontally, and the liquid enters and exits in the uniform holes of the uniform plate. By increasing the flow speed of the liquid and changing the flow direction of the liquid, the mixing effect of high viscosity hydroxypropyl methylcellulose is improved. S3. When the inner drum rotates, the two counterweights drive the second uniform plate to always be located at the bottom of the inner drum. The high viscosity hydroxypropyl methylcellulose that cannot be fully mixed near the inner wall of the inner drum passes over the horizontal plate of the second uniform plate and hits the material passage hole on the vertical plate of the second uniform plate, causing the high viscosity hydroxypropyl methylcellulose to change its direction and speed of movement, making it easier to mix. S4. During the mixing process, the hot water supply in the water tank is controlled by energizing the heating rod. Hot water at a temperature above 50 degrees Celsius is used to mix with high-viscosity hydroxypropyl methylcellulose to prevent clumping. After the mixture is evenly mixed, cold water is introduced to cool it down.

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