Solvent injection device for adhesive production

Abstract

The utility model provides a solvent injection device for adhesive production, which relates to the technical field of injection devices and comprises a heat preservation tank, a stirring bin is communicated below the heat preservation tank, a plurality of solvent storage tanks are arranged in the heat preservation tank, a conveying mechanism is communicated below the stirring bin, and a mixing mechanism is arranged in the stirring bin. The heat preservation tank, the stirring bin and the material conveying mechanism are sequentially communicated, the driving mechanism drives the mixing mechanism and the material conveying mechanism at the same time, the whole structure is compact, the occupied space is small, and installation and layout in an adhesive production workshop are facilitated. The device integrates the functions of solvent storage, heating and heat preservation, accurate metering, mixing and stirring, material conveying and injecting and the like, reduces the number of equipment and connecting links required in the production process, reduces the equipment investment and maintenance cost, and also reduces the problems of leakage and the like possibly caused by equipment connection.

Description

Technical Field

[0001] This utility model mainly relates to the field of injection device technology, specifically to a solvent injection device for adhesive production. Background Technology

[0002] In the production process of adhesives, solvent mixing and dispensing are crucial steps. The performance of adhesives (such as tack, curing speed, corrosion resistance, etc.) largely depends on the uniformity of solvent mixing and the precise proportions of each component.

[0003] Currently, traditional adhesive solvent mixing and dispensing equipment has several significant drawbacks. Firstly, many devices employ a simplistic stirring method and poorly designed stirring structures, leading to uneven solvent mixing. For instance, some stirring devices have improperly distributed blades that fail to fully cover the entire mixing area, resulting in ineffective mixing of certain solvents and impacting the quality stability of the adhesive. Secondly, different solvents require specific temperatures for mixing; appropriate temperatures improve solvent flowability and mixing efficiency. However, some existing devices lack effective heating and insulation measures, or their heating methods are not precise enough to maintain the solvent within a suitable temperature range, further affecting the production quality of the adhesive.

[0004] On the other hand, accurate metering is crucial for ensuring the precise proportions of adhesive components during solvent feeding and dispensing. However, in traditional equipment, solvent feeding and metering are often not precise enough, and simple valve controls are insufficient to meet the stringent mixing requirements of different solvents, easily leading to fluctuations in adhesive product quality. Furthermore, existing feeding and dispensing devices also have shortcomings in continuous feeding, failing to achieve efficient and stable continuous dispensing, thus affecting adhesive production efficiency and increasing production costs.

[0005] In addition, existing adhesive solvent dispensing devices are usually complex in structure, with each functional module being independent of the others. The connection and layout between the devices are not compact enough, which not only occupies a large production space, but also increases the investment and maintenance costs of the equipment, and also increases the risk of leakage due to the connection of the equipment. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This invention provides a solvent dispensing device for adhesive production, which solves the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is as follows: a solvent dispensing device for adhesive production, comprising a heat-insulating tank, a funnel-shaped stirring chamber connected to the bottom of the heat-insulating tank, a plurality of solvent storage tanks disposed inside the heat-insulating tank, a material conveying mechanism connected to the bottom of the stirring chamber, a mixing mechanism disposed inside the stirring chamber, a driving mechanism disposed on the heat-insulating tank, and the output end of the driving mechanism being connected to the mixing mechanism and the material conveying mechanism.

[0010] Preferably, the heat preservation tank is provided with a plurality of heating mechanisms, which are arranged between two adjacent solvent storage tanks.

[0011] Preferably, the drive mechanism includes a rotating shaft rotatably installed in the heat preservation tank and the mixing chamber, and the upper end of the rotating shaft is connected to a motor through a reduction gear set.

[0012] Preferably, the lower part of the rotating shaft is connected to a mixing mechanism, which includes several mixing units arranged in a circular array. Each mixing unit includes a mounting strip, on which several stirring rods are mounted, and the length of the stirring rods decreases from top to bottom.

[0013] Preferably, a discharge port is provided at the center of the lower end of the solvent storage tank, and a metering valve is provided at the lower end of the discharge port.

[0014] Preferably, the material conveying mechanism includes a material conveying pipe and a connecting shaft. The material conveying pipe is located at the lower end of the mixing chamber. The upper end of the connecting shaft is threadedly installed at the lower end of the rotating shaft. A feeding screw is provided on the connecting shaft. A material injection port is provided at the lower end of the material conveying pipe.

[0015] 3. Beneficial effects:

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0017] The insulated tank, mixing chamber, and conveying mechanism of this invention are sequentially connected, and the drive mechanism simultaneously drives both the mixing and conveying mechanisms. The overall structure is compact, occupies little space, and is easy to install and arrange in adhesive production workshops. This device integrates multiple functions such as solvent storage, heating and insulation, precise metering, mixing and stirring, and material conveying, reducing the number of equipment and connection points required in the production process, lowering equipment investment and maintenance costs, and also reducing potential leakage problems caused by equipment connections.

[0018] This invention, through the arrangement of a stirring rod in the mixing mechanism, can create different mixing zones and flow fields within the mixing chamber, ensuring thorough mixing of different solvents and guaranteeing uniform solvent composition after mixing, thereby improving the quality stability of the adhesive. The design of the mixing mechanism provides a wide mixing range and uniform mixing force, enabling rapid and effective mixing of different solvents, improving mixing efficiency and quality, and thus ensuring the consistency of adhesive product quality.

[0019] This invention precisely controls the feed rate of each solvent through a metering valve at the bottom of the solvent storage tank, ensuring that different solvents are mixed together in a set ratio, thus meeting the stringent requirements for solvent proportions in adhesive production. By controlling parameters such as the metering valve, motor start / stop, and speed, the feed rate, mixing speed, and conveying speed of the solvent can be easily adjusted to meet the production process requirements of different adhesive products. The operation is simple and convenient, and it is easy to automate production.

[0020] The heating mechanism of this invention heats and maintains the solvent within a suitable temperature range, ensuring its fluidity and chemical properties. This facilitates subsequent mixing and dispensing operations, and also helps improve the final performance of the adhesive. The heating mechanism is positioned between solvent storage tanks, enabling precise temperature control of the solvent and ensuring it remains at a suitable temperature throughout the production process, thus improving the production quality and stability of the adhesive.

[0021] The material conveying mechanism of this invention continuously delivers the mixed solvent to the injection port through a feeding screw, thereby achieving continuous injection, improving production efficiency, and meeting the continuous operation requirements of adhesive production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the solvent storage tank structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the internal structure of the insulated tank of this utility model;

[0025] Figure 4 This is a schematic diagram of the hybrid mechanism structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the material conveying mechanism of this utility model.

[0027] Figure label:

[0028] 1. Insulated tank; 2. Mixing chamber; 3. Conveying mechanism; 31. Conveying pipe; 32. Connecting shaft; 33. Feeding screw; 34. Connecting thread; 35. Injection port; 4. Drive mechanism; 41. Motor; 42. Reduction gear set; 43. Rotating shaft; 5. Solvent storage tank; 6. Discharge port; 7. Heating mechanism; 8. Mixing mechanism; 81. Mixing unit; 82. Mounting strip; 83. Stirring rod. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Example

[0034] See attached document Figures 1-5 A solvent dispensing device for adhesive production includes a heat-insulating tank 1, a funnel-shaped stirring chamber 2 connected to the bottom of the heat-insulating tank 1, a plurality of solvent storage tanks 5 inside the heat-insulating tank 1, a conveying mechanism 3 connected to the bottom of the stirring chamber 2, a mixing mechanism 8 inside the stirring chamber 2, and a driving mechanism 4 on the heat-insulating tank 1. The output end of the driving mechanism 4 is connected to the mixing mechanism 8 and the conveying mechanism 3.

[0035] The heat preservation tank 1 is equipped with several heating mechanisms 7, which are located between two adjacent solvent storage tanks 5. A discharge port 6 is provided at the center of the lower end of the solvent storage tank 5, and a metering valve is provided at the lower end of the discharge port 6.

[0036] The drive mechanism 4 includes a rotating shaft 43 rotatably installed inside the insulated tank 1 and the mixing chamber 2. The upper end of the rotating shaft 43 is connected to the motor 41 via a reduction gear set 42. The lower part of the rotating shaft 43 is connected to the mixing mechanism 8, which includes several mixing units 81 arranged in a circular array. Each mixing unit 81 includes a mounting strip 82, on which several stirring rods 83 are mounted. The length of the stirring rods 83 decreases from top to bottom.

[0037] The material conveying mechanism 3 includes a material conveying pipe 31 and a connecting shaft 32. The material conveying pipe 31 is located at the lower end of the mixing chamber 2. The upper end of the connecting shaft 32 is connected to the thread 34 and installed at the lower end of the rotating shaft 43. A feeding screw 33 is provided on the connecting shaft 32, and a material inlet 35 is provided at the lower end of the material conveying pipe 31.

[0038] Working principle:

[0039] Before starting adhesive production, operators first inspect all components, including the insulation tank 1, mixing chamber 2, conveying mechanism 3, and drive mechanism 4, to ensure the equipment is in normal operating condition. Then, different types of solvents are injected into several solvent storage tanks 5 within the insulation tank 1 through their respective inlets for storage. These solvent storage tanks 5 are independently set up, effectively preventing unnecessary mixing between different solvents during storage. Simultaneously, the heating mechanism 7 located between adjacent solvent storage tanks 5 within the insulation tank 1 is in standby mode, capable of heating and maintaining the solvent at a suitable temperature to ensure its fluidity and chemical properties.

[0040] When the adhesive production process starts, the operator sets the discharge rate of each solvent according to the required adhesive formula through the control system. A discharge port 6 is located at the center of the lower end of the solvent storage tank 5. A metering valve installed below the discharge port 6 precisely controls the solvent flow rate according to the set parameters. The metering valve employs high-precision control technology, enabling real-time monitoring and adjustment of the solvent flow rate to ensure that each solvent flows into the mixing chamber 2 below in a precise ratio. For example, for a specific adhesive formula, solvents A, B, and C need to be mixed in a certain mass ratio. The metering valve will control the discharge speed and time of solvents A, B, and C respectively to achieve accurate mixing requirements.

[0041] As the solvent flows from the solvent storage tank 5 into the mixing chamber 2, the heating mechanism 7 begins operation. The heating mechanism 7 heats the solvent using a specific heating method (such as electric heating or heat conduction) and monitors the solvent temperature in real time via a temperature sensor. When the temperature reaches the set range, the heating mechanism 7 automatically adjusts the heating power to maintain a stable solvent temperature. This precise temperature control helps improve the solvent's fluidity, allowing for better mixing within the mixing chamber 2. It also helps ensure the chemical stability of the solvent during adhesive production, preventing performance changes caused by improper temperature.

[0042] The motor 41 in the drive mechanism 4 starts, and the high-speed power output by the motor 41 is reduced and amplified by the reduction gear set 42. The reduction gear set 42 transmits the appropriate speed and torque to the rotating shaft 43, so that the rotating shaft 43 rotates stably within the insulation tank 1 and the stirring chamber 2. The mixing mechanism 8 is connected below the rotating shaft 43. The mixing mechanism 8 consists of several mixing units 81 arranged in a circular array. Several stirring rods 83 are mounted on the mounting strip 82 of each mixing unit 81, and the length of the stirring rods 83 decreases from top to bottom. When the rotating shaft 43 rotates, the mixing unit 81 rotates accordingly, and the stirring rods 83 form different stirring zones and flow fields within the stirring chamber 2. The longer stirring rods 83 can perform large-scale stirring in the upper region of the stirring chamber 2, so that the solvent that has just flowed in is initially mixed; while the shorter stirring rods 83 perform more fine stirring in the lower region of the stirring chamber 2, further improving the uniformity of solvent mixing. Through this special stirring structure design, different solvents can be fully and uniformly mixed in the stirring chamber 2, ensuring the consistency of solvent composition after mixing.

[0043] While the solvent is thoroughly mixed in the mixing mechanism 8, the rotation of the rotating shaft 43 also drives the conveying mechanism 3. A connecting shaft 32 is installed at the lower end of the rotating shaft 43 via a connecting thread 34, and a feeding screw 33 is mounted on the connecting shaft 32. When the rotating shaft 43 rotates, the connecting shaft 32 and the feeding screw 33 rotate accordingly. The well-mixed solvent in the mixing chamber 2 is continuously conveyed to the conveying pipe 31 under the action of the feeding screw 33. The spiral blades of the feeding screw 33 ensure a stable and uniform flow of the solvent within the conveying pipe 31, preventing blockages or poor conveying. A filling port 35 is provided at the lower end of the conveying pipe 31. The well-mixed solvent is injected from the filling port 35 into subsequent adhesive production equipment or containers, completing the filling operation. Throughout the conveying and filling process, the operator can adjust the speed of the motor 41 through the control system according to production needs, thereby controlling the rotation speed of the feeding screw 33 to achieve precise control of the filling speed to meet different production rhythms and process requirements.

[0044] After the adhesive production task is completed, the operator stops the motor 41 and closes the metering valve at the discharge port 6 of the solvent storage tank 5 to stop the solvent delivery. Then, the insulation tank 1, mixing chamber 2, and conveying pipe 31 are cleaned to remove residual solvent and impurities, ensuring the equipment is clean and ready for the next production run. During cleaning, specific cleaning solutions and tools can be used to thoroughly clean the inside of the equipment, and the cleaning waste liquid is discharged through the drain outlet.

[0045] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A solvent dispensing device for adhesive production, characterized in that: The device includes a heat preservation tank (1), a funnel-shaped stirring chamber (2) connected to the bottom of the heat preservation tank (1), a number of solvent storage tanks (5) inside the heat preservation tank (1), a material conveying mechanism (3) connected to the bottom of the stirring chamber (2), a mixing mechanism (8) inside the stirring chamber (2), and a driving mechanism (4) on the heat preservation tank (1). The output end of the driving mechanism (4) is connected to the mixing mechanism (8) and the material conveying mechanism (3).

2. The solvent dispensing device for adhesive production according to claim 1, characterized in that: The heat preservation tank (1) is equipped with several heating mechanisms (7), which are located between two adjacent solvent storage tanks (5).

3. The solvent dispensing device for adhesive production according to claim 1, characterized in that: The drive mechanism (4) includes a rotating shaft (43) rotatably installed in the heat preservation tank (1) and the stirring chamber (2), and the upper end of the rotating shaft (43) is connected to the motor (41) through a reduction gear set (42).

4. A solvent dispensing device for adhesive production according to claim 3, characterized in that: The shaft (43) is connected to the mixing mechanism (8) below. The mixing mechanism (8) includes several mixing units (81) arranged in a ring array. Each mixing unit (81) includes a mounting strip (82). Several stirring rods (83) are mounted on the mounting strip (82). The length of the stirring rods (83) decreases from top to bottom.

5. A solvent dispensing device for adhesive production according to claim 1, characterized in that: The solvent storage tank (5) has a discharge port (6) at the center of its lower end, and a metering valve is provided at the lower end of the discharge port (6).

6. A solvent dispensing device for adhesive production according to claim 4, characterized in that: The material conveying mechanism (3) includes a material conveying pipe (31) and a connecting shaft (32). The material conveying pipe (31) is located at the lower end of the mixing chamber (2). The upper end of the connecting shaft (32) is connected by a thread (34) and installed at the lower end of the rotating shaft (43). A feeding screw (33) is provided on the connecting shaft (32). A material injection port (35) is provided at the lower end of the material conveying pipe (31).

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