A simple funnel device for pouring hydrofluoric acid waste liquid

Abstract

This invention provides a simple funnel device for pouring hydrofluoric acid waste liquid; it includes: an external funnel (1), an internal funnel (2) with internal threads (5), and a bucket lid (6); the external funnel (1) includes: an external funnel (1) body and an extension with a float (3) and connected to the outside; the external funnel (1) and the internal funnel (2) are detachably connected; the bucket lid (6) is located on the extension of the external funnel (1). The internal threads of the internal funnel of this invention slow down the downward flow of the liquid, avoid splashing of waste liquid, and achieve the purpose of controllable flow rate; the device of this invention has a sealed channel structure at both the top and bottom, which completely prevents the volatilization of volatile gases; this invention is used for laboratory waste liquid collection, and is especially suitable for the safe recycling of various acid liquids including hydrofluoric acid. The device of this invention is simple, low in cost, safe and reliable, and easy to rinse.

Description

Technical Field

[0001] This utility model relates to the field of funnel devices, specifically, to a simple funnel device for pouring hydrofluoric acid waste liquid. Background Technology

[0002] Laboratory waste liquid containers are typically placed in a waste liquid collection tray (overflow preventer) on the laboratory floor. To collect waste liquid, unscrew the container lid, insert a funnel, pour out the waste liquid, then retract the funnel and tighten the lid. However, this operation usually does not involve a fixed funnel, which can cause tilting and lead to spillage.

[0003] To address the aforementioned technical shortcomings, the following solutions are adopted:

[0004] (1) The lower part of the funnel is integrated with the screw cap, which directly fixes the funnel to the waste liquid tank, solving the tilting problem. This type of funnel is generally equipped with a top cover with an internal cavity for placing adsorbents such as activated carbon or filters. Especially when the waste liquid is hydrofluoric acid, the funnel has no anti-splash design. Skin contact with a solution as low as 2% can cause delayed pain and necrosis, and concentrations above 5% may be fatal, posing a safety hazard. Moreover, hydrofluoric acid is volatile, with a vapor density of 0.7 (lighter than air). High concentrations may have no obvious odor, and inhalation poses a great potential hazard to the human body. This structure requires manual periodic removal of the adsorbent or filter, thus posing a risk of inhalation and contact.

[0005] (2) A float indicator is used to show the liquid level when it reaches a certain height. The float and indicator rod are linked, and a mechanical structure closes the funnel cover to prevent overfilling when multiple people are using it. However, this structure does not address the daily risk control of the hydrofluoric acid waste liquid tank.

[0006] (3) An integrated liquid level sensor is used to achieve real-time monitoring and audible and visual alarms. However, this structure is complex and does not address the daily risk control of hydrofluoric acid waste tanks. Utility Model Content

[0007] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a simple funnel device for pouring hydrofluoric acid waste liquid.

[0008] The technical solution of this utility model is as follows:

[0009] This utility model relates to a simple funnel device for pouring hydrofluoric acid waste liquid, comprising: an external funnel 1, an internal funnel 2 with internal threads 5, and a bucket cover 6.

[0010] in,

[0011] The external funnel 1 includes: an external funnel 1 body and an extension with a float and connected to the outside;

[0012] The external funnel 1 and the internal funnel 2 are detachably connected; the bucket cover 6 is set on the extension of the external funnel 1, and the bucket cover 6 is connected to the waste liquid container and is used to fix the entire device to ensure the stability of the device.

[0013] Preferably, the large opening end of the built-in funnel 2 is fixed on the body of the external funnel 1. When liquid is poured in, the built-in funnel 2 will not be pushed open by the air pressure of the waste liquid at the bottom, thus avoiding the phenomenon that the operation cannot be carried out and ensuring the smooth progress of the operation.

[0014] Preferably, a sealing plug 4 is provided at the connection between the external funnel 1 and the internal funnel 2; when the waste liquid enters the internal funnel 2, it is rotated under the action of the internal thread 5 before being discharged, thus avoiding splashing when pouring.

[0015] In addition, a sealing plug 4 is provided at the connection between the external funnel 1 and the internal funnel 2, and a float ball 3 is provided at the extension of the external funnel 1, thus forming a double-sealed channel structure that can completely prevent the volatilization of volatile gases.

[0016] Preferably, the extension of the external funnel 1 is provided with a baffle ring 7, which is configured to cooperate with the float 3. When the waste liquid reaches the float 3, the float floats up and the waste liquid flows through. If the waste liquid is poured in too quickly or in too much quantity, the float will be pressed down due to gravity, reducing the flow rate and slowing down the leakage speed. This phenomenon can remind personnel that the pouring speed is too fast and that the pouring speed should be reduced, thus serving as a reminder and avoiding the occurrence of safety hazards.

[0017] Preferably, there are two blocking rings 7, and the float 3 is disposed between the two blocking rings 7.

[0018] Preferably, the downward inclination angle of the internal thread 5 is 15 to 30°, the thread depth is 0.5 to 2 mm, and the spacing between the threads is 1.5 to 3 times the thread depth.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The built-in funnel of this utility model has internal threads, which slows down the downward flow of liquid, avoids the phenomenon of waste liquid splashing, and achieves the purpose of controllable flow rate.

[0021] (2) This utility model has a sealed channel structure at both the top and bottom to completely prevent the volatilization of volatile gases. The external funnel uses a water seal to control the escape of volatile gases.

[0022] (3) This utility model is used for laboratory waste liquid collection, and is especially suitable for the safe recycling of various acid liquids including hydrofluoric acid.

[0023] (4) This utility model device is simple, low in cost, safe and reliable, and easy to rinse. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Attached image captions:

[0027] 1 is an external funnel, 2 is an internal funnel, 3 is a float, 4 is a sealing plug, 5 is an internal thread, 6 is a bucket lid, and 7 is a retaining ring. Detailed Implementation

[0028] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0029] Example

[0030] This embodiment describes a simple funnel device for pouring hydrofluoric acid waste liquid, see... Figure 1 As shown, it includes: an external funnel 1, an internal funnel 2 with internal threads 5, and a bucket lid 6;

[0031] in,

[0032] The external funnel 1 includes: an external funnel 1 body and an extension with a float and connected to the outside;

[0033] The external funnel 1 and the internal funnel 2 are detachably connected; the bucket cover 6 is set on the extension of the external funnel 1, and the bucket cover 6 is connected to the waste liquid container and is used to fix the entire device to ensure the stability of the device.

[0034] Preferably, the large opening end of the built-in funnel 2 is fixed on the body of the external funnel 1. When liquid is poured in, the built-in funnel 2 will not be pushed open by the air pressure of the waste liquid at the bottom, thus avoiding the phenomenon that the operation cannot be carried out and ensuring the smooth progress of the operation.

[0035] Preferably, a sealing plug 4 is provided at the connection between the external funnel 1 and the internal funnel 2; when the waste liquid enters the internal funnel 2, it is rotated under the action of the internal thread 5 before being discharged, thus avoiding splashing when pouring.

[0036] In addition, a sealing plug 4 is provided at the connection between the external funnel 1 and the internal funnel 2, and a float ball 3 is provided at the extension of the external funnel 1, thus forming a double-sealed channel structure, which can completely prevent the volatilization of volatile gases.

[0037] Preferably, the extension of the external funnel 1 is provided with a baffle ring 7, which is configured to cooperate with the float 3. When the waste liquid reaches the float 3, the float floats up and the waste liquid flows through. If the waste liquid is poured in too quickly or in too much quantity, the float will be pressed down due to gravity, reducing the flow rate and slowing down the leakage speed. This phenomenon can remind personnel that the pouring speed is too fast and that the pouring speed should be reduced, thus serving as a reminder and avoiding the occurrence of safety hazards.

[0038] Preferably, there are two blocking rings 7, and the float 3 is disposed between the two blocking rings 7.

[0039] Preferably, the downward inclination angle of the internal thread 5 is 15 to 30°, the thread depth is 0.5 to 2 mm, and the spacing between the threads is 1.5 to 3 times the thread depth.

[0040] Furthermore, both the external funnel 1 and the internal funnel 2 are made of polytetrafluoroethylene (PTFE), and the float 3 is made of polypropylene (PP).

[0041] The external funnel 1 serves as a storage space, and the downward inclination angle and width of the internal thread 5 can be adjusted according to the flow rate control. A bucket lid is fixed to the lower part of the external funnel. The extension of the external funnel 1 is equipped with two baffle rings 7, which cooperate with the float 3. The float 3 is positioned between the two baffle rings 7.

[0042] How to use:

[0043] When in use, open the sealing plug 4, and the clean water from the external funnel 1 flows into the internal funnel 2. If the clean water level remains at a certain height without dropping, it indicates that the waste liquid bucket should not be emptied and a new bucket needs to be replaced.

[0044] When the clean water in the external funnel 1 has completely flowed into the bucket, the collected waste liquid can be poured into the internal funnel 2. The waste liquid is discharged by rotating under the action of the internal thread 5 of the internal funnel 2, avoiding splashing when pouring. When the waste liquid flows to the float 3, the float floats and the liquid flows through. If the waste liquid is poured in too fast or the amount of waste liquid is too large, the float 3 will be pressed down due to the increase of gravity, thereby reducing the flow rate. This can serve as a reminder to personnel that the waste liquid is being poured in too fast, so the pouring speed or amount should be reduced to avoid safety hazards.

[0045] When the waste liquid level in the container does not reach the float 3, after the waste liquid is poured out, the float 3 will sink due to gravity, thus closing the channel for the volatile gases to escape. When the waste liquid level in the container reaches the float 3, after the waste liquid is poured out, the float 3 will rise due to buoyancy, closing the channel. When using the container again, adding clean water will indicate that the waste liquid container has reached its designed capacity. After emptying the waste liquid, add a small amount of clean water to the external funnel 1 to clean the internal funnel 2, place the sealing plug 4 to close the upper channel of the internal funnel 1, and add clean water to the external funnel 1 until the liquid level covers the sealing plug 4.

[0046] In summary, the internal threads of the built-in funnel in this invention slow down the downward flow of liquid, preventing splashing and achieving controllable flow rate. The device features sealed channels at both the top and bottom to completely prevent the evaporation of volatile gases, and the external funnel uses a water seal to control the escape of volatile gases. This invention is used for laboratory waste collection, and is particularly suitable for the safe recovery of various acids, including hydrofluoric acid. This device is simple, low-cost, safe, reliable, and easy to rinse.

[0047] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various modifications or variations within the scope of the claims, which do not affect the substantive content of this utility model.

Claims

1. A simple funnel device for decanting hydrofluoric acid waste liquid, characterized by, include: An external funnel (1), an internal funnel (2) with internal threads (5), and a bucket lid (6); in, The external funnel (1) includes: an external funnel (1) body and an extension provided with a float (3) and connected to the outside; The external funnel (1) and the internal funnel (2) are detachably connected; The lid (6) is set on the extension of the external funnel (1).

2. The simple funnel device for decanting hydrofluoric acid waste liquid according to claim 1, characterized by, The large opening end of the built-in funnel (2) is fixed on the body of the external funnel (1).

3. The simple funnel device for decanting hydrofluoric acid waste liquid according to claim 1, characterized by, A sealing plug (4) is provided at the connection between the external funnel (1) and the internal funnel (2).

4. The simple funnel device for decanting hydrofluoric acid waste solution according to claim 1, wherein The extension of the external funnel (1) is provided with a baffle ring (7), which is configured in conjunction with the float (3).

5. The simple funnel device for pouring hydrofluoric acid waste liquid as described in claim 3, characterized in that, There are two blocking rings (7), and the float (3) is set between the two blocking rings (7).

6. The simple funnel device for pouring hydrofluoric acid waste liquid as described in claim 1, characterized in that, The internal thread (5) has a downward inclination angle of 15° to 30°, a thread depth of 0.5 to 2 mm, and a spacing between threads of 1.5 to 3 times the thread depth.

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