Closed liquid pumping and material transferring device for bulk container

Abstract

The utility model provides a closed liquid pumping and material transferring device for a bulk container, which is characterized by comprising a barrel joint connected with an external bulk container; the lower end of the closed liquid pumping connector is inserted into the barrel connector; the rotating nut sleeves the lower end of the closed liquid pumping joint and is in threaded connection with the inner wall of the barrel joint; a liquid outlet channel is formed in the closed liquid pumping connector, a liquid outlet is formed in the upper end of the closed liquid pumping connector, an air inlet is formed in the side face of the closed liquid pumping connector, and a check valve is arranged in the liquid outlet channel. The barrel connector is designed to be matched with container barrels of various models, the barrel connector is arranged on a traditional open container and then is in threaded connection with the closed liquid extraction connector, the double-channel design is achieved, the pressure in the container is stable during liquid extraction through gas-liquid separation, meanwhile, after liquid extraction is completed, the closed liquid extraction connector is screwed out, and damage caused by liquid leakage can be prevented due to the check valve; the production environment safety is protected.

Description

Technical Field

[0001] The utility model relates to a closed liquid pumping and material transferring device for a bulk container. Background Art

[0002] For any bulk container of liquid chemicals, closed operation during the transfer and extraction of liquid chemicals is a challenge. Currently, most bulk containers for liquid chemicals use open extraction, and a large amount of volatile gas from the chemical liquid escapes from the barrel mouth. At the same time, when the extraction pipe is pulled out of the barrel, the chemical liquid remaining in the extraction pipe and the pipeline at the front end of the pump will leak out, which not only wastes chemical materials, but also causes the on-site environment to be dirty, seriously endangers the environmental safety of the production site, and causes personal injury to the operator. Utility Model Content

[0003] The purpose of the utility model is to address the above-mentioned problems in the existing technology and propose a closed liquid extraction and material transfer device for bulk containers. A barrel joint is designed to adapt to various types of container barrels, a barrel joint is set on a traditional open container, and then a closed liquid extraction joint is threadedly connected. It has a dual-channel design, and gas-liquid separation makes the pressure in the container stable during liquid extraction. At the same time, the closed liquid extraction joint is unscrewed after the liquid extraction is completed, and the check valve can prevent liquid leakage from causing harm, thereby protecting the safety of the production environment.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a bulk container closed liquid extraction and material transfer device, characterized in that it includes:

[0005] a drum connector, which connects to an external bulk container;

[0006] A closed liquid extraction joint, the lower end of which is inserted into the barrel joint;

[0007] A rotating nut is sleeved on the lower end of the sealed liquid extraction joint and is threadedly connected to the inner wall of the barrel joint;

[0008] The interior of the sealed liquid extraction joint is a liquid outlet channel and the upper end is provided with a liquid outlet, and the side of the sealed liquid extraction joint is provided with an air inlet.

[0009] Furthermore, the air inlet and the liquid outlet are separated and not connected to each other.

[0010] Furthermore, the air inlet is provided with a first air inlet through hole in the vertical direction downward of the closed liquid extraction joint.

[0011] Furthermore, a circle of clamping edge is provided in the middle of the sealed liquid extraction joint for clamping and fixing the rotating joint, and the air outlet end of the first air inlet through hole is located at the lower side of the clamping edge.

[0012] Furthermore, the rotating nut includes a rotating portion that is clamped and fixed to the clamping edge and a threaded portion that is threadedly connected to the barrel joint, and an air outlet groove is provided on the upper side of the threaded portion.

[0013] Furthermore, a plurality of second air inlet holes penetrating the barrel joint are formed on the inner wall of the barrel joint, and the second air inlet holes correspond to the air outlet grooves of the threaded portion.

[0014] Furthermore, a check valve is provided in the liquid outlet channel.

[0015] Furthermore, a plug pipe extending to the bottom of the external bulk container is provided at the lower end of the barrel joint.

[0016] Compared with the prior art, the advantages of the present application are: by designing a barrel joint to adapt to various types of container barrels, a barrel joint is set on a traditional open container, and then a closed liquid extraction joint is threadedly connected. It has a dual-channel design, and gas-liquid separation makes the pressure in the container stable during liquid extraction. At the same time, after the liquid extraction is completed, the closed liquid extraction joint is unscrewed because it has a check valve to prevent liquid leakage and cause harm, thereby protecting the safety of the production environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a liquid pumping and material transfer device;

[0018] Figure 2 It is a partial cross-sectional schematic diagram of the air inlet of the closed liquid extraction joint;

[0019] Figure 3 It is a cross-sectional view of the liquid pumping and material transfer device;

[0020] Figure 4 It is a schematic diagram of the installation of the liquid pumping and material transfer device and the bulk container;

[0021] In the figure, 1. closed liquid extraction joint; 11. air inlet; 12. first air inlet hole; 13. clamping edge; 14. liquid outlet; 15. liquid outlet channel; 16. check valve; 2. barrel joint; 21. insert tube; 22. second air inlet hole; 3. rotating nut; 31. rotating part; 32. threaded part; 33. air outlet groove; 4. bulk container. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention.

[0023] like Figure 1-4 As shown, a bulk container closed liquid extraction and material transfer device is characterized in that it includes:

[0024] a barrel connector 2, which is connected to an external bulk container 4;

[0025] The lower end of the sealed liquid extraction joint 1 is inserted into the barrel joint 2;

[0026] The rotating nut 3 is sleeved on the lower end of the airtight liquid extraction joint 1 and is threadedly connected to the inner wall of the barrel joint 2;

[0027] The sealed liquid extraction joint 1 has a liquid outlet channel 15 inside and a liquid outlet 14 at the upper end. The sealed liquid extraction joint 1 has an air inlet 11 at the side.

[0028] Furthermore, the air inlet 11 and the liquid outlet channel 15 are separated and not connected to each other. Gas-liquid separation design.

[0029] Furthermore, the air inlet 11 is provided with a first air inlet through hole 12 in the vertical direction downward of the sealed liquid extraction joint 1 .

[0030] Furthermore, a circle of clamping edge 13 is provided in the middle of the sealed liquid extraction joint 1 for clamping and fixing the rotating joint, and the air outlet end of the first air inlet hole 12 is located at the lower side of the clamping edge 13 .

[0031] Furthermore, the rotating nut 3 includes a rotating portion 31 fixedly engaged with the clamping edge 13 and a threaded portion 32 threadedly connected to the barrel joint 2, and an air outlet groove 33 is provided on the upper side of the threaded portion 32. The rotating nut 3 and the sealed liquid extraction joint 1 are fixed by the clamping edge 13, so that the two are firmly connected.

[0032] Furthermore, a plurality of second air inlet holes 22 penetrating the barrel joint 2 are formed on the inner wall of the barrel joint 2 , and the second air inlet holes 22 correspond to the air outlet grooves 33 of the threaded portion 32 .

[0033] Furthermore, a check valve 16 is provided in the liquid outlet channel 15. The check valve 16 can prevent the residual liquid from flowing back after the sealed liquid extraction joint 1 is screwed out.

[0034] Furthermore, a plug pipe 21 extending to the bottom of the external bulk container 4 is provided at the lower end of the barrel joint 2 .

[0035] The present invention is a closed liquid extraction device for a bulk container 4, which provides a new closed material transfer method for liquid chemicals. The closed liquid extraction device consists of a barrel joint 2 installed on the open mouth of the bulk container 4, a plug 21 installed on the barrel joint 2, a rotating nut 3 and a closed liquid extraction joint 1. The barrel joint 2 is suitable for 200L barrels, 1000L ton barrels and small packaging barrels, etc., and is connected by threads. When liquid extraction is not performed, a plug can be screwed on the connection to prevent volatile gas from volatilizing. The plug 21 and the barrel joint 2 are inserted into the packaging barrel, and the plug 21 extends to the bottom of the packaging barrel. The barrel joint 2 and the barrel mouths of various packaging barrels are sealed by threads; the closed liquid extraction joint 1 adopts an integrated dual-channel design, that is, a gas-liquid separation design, and has a liquid outlet channel 15 and an air inlet 11, a built-in check valve 16, and a rotating nut 3 threadedly connected to the barrel joint 2 at the bottom.

[0036] In actual operation, the barrel joint 2 and the insert tube 21 are inserted into the packaging container containing chemicals in the chemical production factory, and become a part of the packaging container. With the packaging container, it is transported to the downstream factory that uses the chemicals. In the use workshop, the plug that prevents volatilization is first removed with professional tools, and the closed liquid extraction joint 1 is inserted into the barrel joint 2. The rotating nut 3 is tightened to connect the closed liquid extraction joint 1 and the barrel joint 2 to form a coupling system. When the outlet liquid pipeline is connected and the pump is turned on, the chemical liquid can be pumped into the storage tank or process equipment.

[0037] At this time, the air inlet 11, the first air inlet hole 12, the air outlet groove 33 and the second air inlet hole 22 form an air inlet channel, the air inlet 11 is connected to the first air inlet hole 12, the first air inlet hole 12 is connected to the air outlet groove 33, and the air outlet groove 33 corresponds to the second air inlet hole 22, so that external gas can enter the bulk container 4 through the air inlet channel to keep the internal pressure stable when pumping liquid. The air inlet channel and the liquid outlet channel 15 are designed separately.

[0038] When a barrel of chemicals is extracted, the sealed liquid extraction joint 1 is screwed out from the barrel joint 2, and then the sealed liquid extraction joint 1 is inserted into the barrel joint 2 of another packaging container. The same operation is performed until the batch of chemical packaging barrels is extracted. The barrel joint 2 of the utility model can be screwed out by a special tool for recycling.

[0039] The closed liquid extraction device of the bulk container 4 has a unique structure. It relies on the split operation of the barrel joint 2 and the closed liquid extraction joint 1 and the built-in check valve 16 of the closed liquid extraction joint to prevent the leakage of chemical materials in the bulk container 4 and the escape of volatile gases of chemical liquids, and achieve 100% sealing. It is made of high-strength plastics such as PP, HDPE, PVDF, PCTFE, PTFE and other materials, which are strong and durable; a variety of barrel joints 2 are designed to adapt to different types of chemical packaging containers. The barrel joint 2 and the closed liquid extraction joint 1 are easy to operate, and the barrel switching operation is convenient. At the same time, the cannula 21 can be inserted into the lowest point of the packaging container, and it can be almost completely extracted without chemical waste. In the process of closed extraction and transfer, no chemical leakage and volatile gas escape can be achieved, and the extraction is clean. The operator will not be exposed to chemical dripping, leakage and volatile gases during the material transfer process, which can bring safety, economic and environmental benefits to related personnel and processes.

[0040] The technical solution of the above utility model provides a solution that is significantly different from the prior art to address the technical problem that the prior art solution is too single. The parts not involved in the technical solution of this application are the same as the prior art or can be implemented by using the prior art and will not be described in detail.

[0041] The technical solutions in the above embodiments have clearly and completely described the contents of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A bulk container closed liquid extraction and material transfer device, characterized in that: It includes: a drum connector, which connects to an external bulk container; A closed liquid extraction joint, the lower end of which is inserted into the barrel joint; A rotating nut is sleeved on the lower end of the sealed liquid extraction joint and is threadedly connected to the inner wall of the barrel joint; The interior of the sealed liquid extraction joint is a liquid outlet channel and the upper end is provided with a liquid outlet, and the side of the sealed liquid extraction joint is provided with an air inlet.

2. A bulk container sealed liquid extraction and material transfer device according to claim 1, characterized in that: The air inlet and the liquid outlet are separated and not connected to each other.

3. A bulk container sealed liquid extraction and material transfer device according to claim 2, characterized in that: The air inlet is provided with a first air inlet through hole in the vertical direction downwardly of the closed liquid extraction joint.

4. A bulk container closed liquid extraction and material transfer device according to claim 3, characterized in that: A circle of clamping edge is provided in the middle of the sealed liquid extraction joint for clamping and fixing the rotating joint, and the air outlet end of the first air inlet through hole is located at the lower side of the clamping edge.

5. A bulk container sealed liquid extraction and material transfer device according to claim 4, characterized in that: The rotating nut comprises a rotating part which is clamped and fixed with the clamping edge and a threaded part which is threadedly connected with the barrel joint, and an air outlet groove is arranged on the upper side of the threaded part.

6. A bulk container sealed liquid extraction and material transfer device according to claim 5, characterized in that: The inner wall of the barrel joint is provided with a plurality of second air inlet holes penetrating the barrel joint, and the second air inlet holes correspond to the air outlet grooves of the threaded portion.

7. A bulk container closed liquid extraction and material transfer device according to claim 1, characterized in that: A check valve is arranged in the liquid outlet channel.

8. A bulk container sealed liquid extraction and material transfer device according to claim 1, characterized in that: The lower end of the barrel joint is provided with a spigot extending to the bottom of the external bulk container.

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