Positive pressure type anti-foaming solution transfer device

Abstract

The utility model provides a positive pressure type anti-foaming solution transfer device, which belongs to the technical field of chemical fluid conveying equipment and comprises a conveying pipe, an air inlet valve and a soft self-locking plug, the soft self-locking plug is provided with a liquid flow channel penetrating through the upper end face and the lower end face, and the conveying pipe is placed in the liquid flow channel. Meanwhile, the two ends of the conveying pipe penetrate through the upper end face and the lower end face of the soft self-locking plug respectively and are arranged outside the soft self-locking plug, the portion, arranged on the upper portion of the soft self-locking plug, of the conveying pipe is a liquid outlet pipe, the portion, arranged on the lower portion of the soft self-locking plug, of the conveying pipe is a liquid inlet pipe, and an air inlet valve is further installed at the upper end of the soft self-locking plug. The device disclosed by the utility model can effectively solve the problem of foam generation in the transfer process of easy-to-foam media such as polymer solutions, surfactants and the like, and has the characteristics of compact structure, strong compatibility and safety in operation.

Description

Technical Field

[0001] This utility model relates to the field of chemical fluid conveying equipment technology, and in particular to a positive pressure anti-foaming solution transfer device. Background Technology

[0002] In chemical production processes, the transfer of easily foaming solutions such as viscous polymers and anionic surfactants presents significant technical challenges. Traditional open-pouring or negative-pressure extraction methods easily lead to the formation of foam by entraining air in the solution, causing multiple problems: (1) foaming leads to an inflated effective volume, resulting in measurement errors; (2) foam bursting generates aerosols, endangering the health of operators; (3) for solutions containing volatile organic compounds, foam increases the risk of vapor diffusion. Patent CN218202191U discloses a foam liquid mobile filling device. This patent allows for the rapid filling of foam liquid into the storage tank by adding a pump and hose, thus avoiding the problem of foam liquid spillage. However, the foam liquid filling device used has drawbacks such as complex structure and high maintenance costs. Therefore, there is an urgent need to develop a simple device that avoids foam generation from the perspective of the transfer mechanism. Utility Model Content

[0003] In view of this, the present invention aims to propose a positive pressure anti-foaming solution transfer device. The device has a simple structure and is easy to use. It can not only achieve non-vaporized liquid transportation through air pressure drive, but also can be quickly adapted to solvent tanks of different specifications.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A positive pressure anti-foaming solution transfer device includes a delivery pipe, an air inlet valve, and a flexible self-locking plug. The flexible self-locking plug is provided with a liquid flow channel penetrating through the upper and lower end faces. The delivery pipe is placed inside the liquid flow channel, and both ends of the delivery pipe penetrate through the upper and lower end faces of the flexible self-locking plug and are located outside the flexible self-locking plug. The portion of the delivery pipe located at the upper part of the flexible self-locking plug is the liquid outlet pipe, and the portion located at the lower part of the flexible self-locking plug is the liquid inlet pipe. An air inlet valve is also installed at the upper end of the flexible self-locking plug.

[0005] Furthermore, the soft self-locking plug has a frustum-shaped structure with a taper of 6.5°±0.5° on its outer conical surface; the soft self-locking plug also has an air inlet, which runs through the upper and lower end faces of the soft self-locking plug, and the upper end of the air inlet is connected to the air intake valve.

[0006] Furthermore, the soft self-locking plug is made of compressible rubber material with a Shore hardness of 40HA-60HA. When the soft self-locking plug is inserted into the solvent tank opening, it can generate radial compression to form an interference seal and thus self-lock.

[0007] Furthermore, the intake valve includes a standard tire valve structure that can be connected to quick-connect fittings of manual air pumps, foot-operated air pumps, or electric air compressors.

[0008] Furthermore, the delivery pipe is an integrated flexible hose structure, and the delivery pipe and the liquid flow channel form an interference seal. The delivery pipe is made of polytetrafluoroethylene or food-grade silicone material.

[0009] Compared with the prior art, the positive pressure anti-foaming solution transfer device of this utility model has the following advantages: the device of this utility model can effectively solve the problem of foam generation in the transfer process of easily foaming media such as polymer solutions and surfactants, and has the characteristics of compact structure, strong compatibility and safe operation.

[0010] (1) The positive pressure anti-foaming solution transfer device of this utility model establishes a positive pressure closed transmission system and realizes non-vaporization transportation of liquid through air pressure drive;

[0011] (2) The sealing plug of this utility model is a conical soft self-locking plug structure, which can realize the rapid adaptation of the device to solvent tanks of different specifications.

[0012] (3) The air inlet of this utility model is an integrated standard pneumatic interface, which is compatible with a variety of industrial air source equipment. Attached Figure Description

[0013] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0014] Figure 1 This is a schematic diagram of the positive pressure anti-foaming solution transfer device of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the soft self-locking plug described in this utility model;

[0016] Figure 3 for Figure 1 A magnified view of part A in the middle;

[0017] Figure 4 A bottom view of a soft self-locking plug;

[0018] Figure 5 This is a schematic diagram of the overall installation of the positive pressure anti-foaming solution transfer device described in this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Liquid outlet pipe; 2. Liquid inlet pipe; 3. Air inlet valve; 4. Soft self-locking plug; 5. Air inlet port; 6. Liquid flow channel; 7. Solvent tank. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] like Figures 1-5 As shown, this utility model is a positive pressure anti-foaming solution transfer device, specifically relating to a positive pressure anti-foaming device for the sealed transfer of easily foaming solutions. It includes a delivery pipe, an air inlet valve 3, and a flexible self-locking plug 4. The flexible self-locking plug 4 is provided with a liquid flow channel 6 that runs through the upper and lower end faces. The delivery pipe is placed inside the liquid flow channel 6, and both ends of the delivery pipe pass through the upper and lower end faces of the flexible self-locking plug 4 and are located outside the flexible self-locking plug 4. The portion of the delivery pipe located at the upper part of the flexible self-locking plug 4 is the liquid outlet pipe 1, and the portion located at the lower part of the flexible self-locking plug 4 is the liquid inlet pipe 2. An air inlet valve 3 is also installed at the upper end of the flexible self-locking plug 4. In the description of this utility model, it should be understood that the terms "center", "longitudinal", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The soft self-locking plug 4 is made of soft material and has a frustoconical structure, suitable for most plastic or metal solvent containers 7 on the market. Its moderate taper provides a certain degree of self-locking during connection. Without tapping or other fixing methods, the soft material ensures a tight seal with the circular opening of the solvent container 7. Preferably, the soft self-locking plug 4 is made of compressible rubber material with a Shore hardness of 40HA-60HA. When the soft self-locking plug 4 is inserted into the opening of the solvent container 7, it generates radial compression, forming an interference seal and thus self-locking. The soft self-locking plug 4 has a frustoconical structure with a taper of 6.5°±0.5° on its outer conical surface. The 6.5°±0.5° cone angle design and the compressible rubber material of the soft self-locking plug 4 ensure a positive pressure maintenance of 5kPa-20kPa and are compatible with standard solvent containers 7 made of different materials.

[0026] The flexible self-locking plug 4 also has an air inlet 5, which extends through the upper and lower end faces of the flexible self-locking plug 4. The upper end of the air inlet 5 is connected to the air intake valve 3. The air intake valve 3 and the flexible self-locking plug 4 are fixedly installed, forming a gas passage with the air inlet 5. A positive pressure air source can be connected through the air intake valve 3; this positive pressure air source is existing technology. The air intake valve 3 uses a standard tire valve core commonly found in the market. The air intake valve 3 conforms to the GB / T 1796 standard and can be quickly and effectively connected to manual air pumps, foot-operated air pumps, electric air compressors, electric pumps, etc. Since the air intake valve 3 is existing technology, it will not be described in detail here.

[0027] The delivery pipe is an integrated flexible hose structure, using flexible, bend-resistant tubing to ensure solution transmission in a completely closed state. Preferably, the delivery pipe is made of polytetrafluoroethylene or food-grade silicone, allowing it to be easily bent and deformed without affecting its flow. The delivery pipe forms an interference seal with the liquid flow channel 6. Due to the elasticity of the soft self-locking plug 4, the delivery pipe and the soft self-locking plug 4 are effectively sealed at the crossing point. Preferably, the inner diameter of the delivery pipe is 8mm-12mm, and the wall thickness is 1.5mm-2mm.

[0028] Example 2

[0029] The structure is basically the same as in Embodiment 1, except that a gravity ball (not shown in the figure) is installed at the lower end of the liquid inlet pipe 2 to allow liquid to enter. At the same time, the liquid inlet chamber of the gravity ball is connected to the lumen of the liquid inlet pipe 2. The gravity ball is commonly used at the lower end of a water cup straw or a baby bottle straw. Through the gravity ball, the lower end of the liquid inlet pipe 2 can always be at the bottom of the solvent tank 7. Even if the solvent tank 7 is tilted, it can be ensured that the lower end of the liquid inlet pipe 2 is always at the lowest position of the liquid level in the tank, thereby ensuring that the liquid can be continuously and effectively output from the delivery pipe. Since the gravity ball is a relatively mature existing technology, it will not be described in detail here.

[0030] The device described in this invention achieves rapid sealing of the solvent tank 7 opening through a conical soft self-locking plug 4. A standard valve core is connected to a positive pressure gas source, driving the liquid inside the solvent tank 7 to be output unidirectionally through the delivery pipe. The soft self-locking plug 4 features a 6.5°±0.5° cone angle design, combined with compressible rubber material, ensuring a positive pressure of 5kPa-20kPa while being adaptable to standard solvent tanks 7 of different materials. The delivery pipe uses flexible, bend-resistant tubing to ensure solution transmission in a fully closed state. This device effectively solves the foam generation problem during the transfer of easily foaming media such as polymer solutions and surfactants, and features a compact structure, strong compatibility, and safe operation.

[0031] In actual operation, first remove the lid of the circular opening of the solvent tank 7, put the inlet pipe 2 into the solvent tank 7, and let the lower end of the inlet pipe 2 hang down to the bottom of the solvent tank 7 and sink below the solvent surface. Then, put the soft self-locking plug 4 on the opening of the solvent tank 7 and press the soft self-locking plug 4 into the self-locking state by hand. Then, put the outlet pipe 1 into the container to be added, and then connect the air pump nozzle to the air inlet valve 3 to complete the installation of the device. At this point, the solvent tank 7 and the device described in this invention establish a positive pressure closed transmission system. A positive pressure gas source is connected through the air inlet valve 3. The positive pressure gas source sequentially passes through the air inlet valve 3 and the air inlet hole 5, then enters the cavity above the liquid surface in the solvent tank 7. With the continuous addition of positive pressure gas, the pressure inside the solvent tank 7 gradually increases, causing the solvent in the solvent tank 7 to be transported along the liquid inlet pipe 2 to the liquid outlet pipe 1, and then from the liquid outlet pipe 1 to the container to be added. This process ensures that the solution is transported in a completely closed state, effectively preventing the solution from entraining air and generating foam. The non-vaporized transport of the liquid is achieved through air pressure drive. Examples show that this device can reduce foam generation by more than 92% and increase transfer efficiency by 40%, making it particularly suitable for operating scenarios with standard solvent tanks 7 of 50L-200L.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positive pressure anti-foaming solution transfer device, characterized in that: It includes a delivery pipe, an air inlet valve (3) and a soft self-locking plug (4). The soft self-locking plug (4) is provided with a liquid flow channel (6) that runs through the upper and lower end faces. The delivery pipe is placed in the liquid flow channel (6). At the same time, both ends of the delivery pipe run through the upper and lower end faces of the soft self-locking plug (4) and are located outside the soft self-locking plug (4). The part of the delivery pipe located at the upper part of the soft self-locking plug (4) is the liquid outlet pipe (1), and the part located at the lower part of the soft self-locking plug (4) is the liquid inlet pipe (2). An air inlet valve (3) is also installed at the upper end of the soft self-locking plug (4).

2. The positive pressure anti-foaming solution transfer device according to claim 1, characterized in that: The soft self-locking plug (4) has a frustum-shaped structure with a taper of 6.5°±0.5° on its outer conical surface. The soft self-locking plug (4) also has an air inlet (5) which penetrates the upper and lower end faces of the soft self-locking plug (4). At the same time, the upper end of the air inlet (5) is connected to the air inlet valve (3).

3. The positive pressure anti-foaming solution transfer device according to claim 2, characterized in that: The soft self-locking plug (4) is made of compressible rubber material with a Shore hardness of 40HA-60HA. When the soft self-locking plug (4) is inserted into the opening of the solvent tank (7), it can generate radial compression to form an interference seal and thus self-lock.

4. The positive pressure anti-foaming solution transfer device according to claim 1, characterized in that: The intake valve (3) includes a standard tire valve structure that can be connected to a quick connector of a manual air pump, a foot-operated air pump or an electric air compressor.

5. A positive pressure anti-foaming solution transfer device according to claim 1, characterized in that: The delivery pipe is an integrated flexible hose structure, and the delivery pipe and the liquid flow channel (6) form an interference seal. The delivery pipe is made of polytetrafluoroethylene or food-grade silicone material.

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