Negative pressure weighing cover for pharmaceutical production
By designing a negative pressure weighing cover for drug production, including sealed hatch door, air pump and activated carbon filter block, the problem that the existing technology of traditional Chinese medicine powder cannot be completely isolated is solved, and higher safety and effective powder filtration effect are achieved .
Patent Information
- Application Number
- CN202421134039.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing negative pressure weighing cover cannot completely isolate the loading environment, which makes it possible for operators to inhale the powder during the weighing and dispensing of the drug, affecting their health.
A negative pressure weighing cover for pharmaceutical production is designed, including a base plate, a filter box, an isolation chamber, an operating hole, an operating glove, a vent pipe, an air pump and a sealed hatch. After the powder is placed in the sealed hatch door and closed, the isolation chamber forms a sealed environment. The air pump extracts air and adsorbs the powder through the activated carbon filter block to form a negative pressure to prevent the powder from floating.
Effectively prevent the powder from diverging and leaking during weighing and aliquoting, improving the safety of operators and weighing safety.
Smart Images
Figure CN222438955U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of negative pressure weighing hoods, in particular to a negative pressure weighing hood used for medicine production. Background Art
[0002] Negative pressure weighing hood is a small-scale purification equipment used in the pharmaceutical industry for weighing and packaging small batches of drugs. It is suitable for personal protective equipment exposed to high concentrations of toxic and harmful substances and has respiratory protection. Its main function is to prevent the harm of dust and reagents to human body from inhalation, and to protect the environment and the safety of indoor personnel.
[0003] However, the negative pressure weighing hood in the prior art cannot completely isolate the loading environment, but only uses negative pressure to guide the powder into the predetermined air duct for filtration. In this way, the operator is still likely to inhale the powder, which may easily affect the operator's body over a long period of time. Therefore, in order to address this problem, an improved negative pressure weighing hood for drug production is needed. Utility Model Content
[0004] The purpose of the utility model is to provide a negative pressure weighing hood for medicine production to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a negative pressure weighing hood for drug production, comprising a base plate, a filter box is fixedly arranged on the upper end of the base plate, a weighing mechanism for isolated weighing is arranged on the upper end of the filter box, the weighing mechanism comprises an isolation bin, an operating hole, operating gloves, an exhaust pipe, and an air pump, an isolation bin is fixedly arranged on the upper end of the filter box, operating holes are opened on both sides of the surface of the isolation bin, operating gloves are fixedly arranged on one side of the operating hole inside the isolation bin, an exhaust pipe is fixedly arranged on one side of the surface of the isolation bin, an air pump is arranged between the exhaust pipe and the filter box, the air inlet end of the air pump is mutually connected with the inside of the isolation bin through the exhaust pipe, and the air outlet end of the air pump is mutually connected with the inside of the filter box.
[0006] Preferably, an air outlet is fixedly provided on the side of the filter box away from the air pump, and an activated carbon filter block is provided inside the filter box. The air pump can draw out the air inside the isolation chamber and pump it into the filter box. The activated carbon filter block inside the filter box adsorbs and filters the powder and then discharges the air from the air outlet. In this way, the filter element can draw out the powder in the air, thereby improving the safety of the device when in use.
[0007] Preferably, a sealed door is provided on the outer surface of the upper end of the isolation bin through a hinge, through which materials such as medicine powder that need to be operated can be conveniently placed into the isolation bin, and then the sealed door can be closed to form a closed environment inside the isolation bin except for the exhaust pipe. However, it should be noted that each time the sealed door is opened, the air pump should be turned on, and then the air inside the isolation bin is extracted by the air pump to form a negative pressure inside the isolation bin; outside air continuously enters from the inside of the sealed door, thereby effectively preventing the medicine powder from scattering and leaking.
[0008] Preferably, a control switch is fixedly provided on one side of the upper end of the filter box surface, and the control switch is electrically connected to the pump body; the operation of the pump body can be controlled by the control switch.
[0009] Preferably, the isolation chamber is made of a transparent material, such as acrylic or transparent glass, so that the staff can easily see the internal situation of the isolation chamber and weigh the medicines.
[0010] Preferably, a control valve is fixedly provided between the vacuum pipe and the isolation chamber, and universal wheels are movably provided at the four corners of the lower end surface of the base plate. The control valve can be closed when operating the medicine, so that the isolation chamber forms a completely enclosed isolation space.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] The utility model can conveniently put medicine powder and other materials that need to be operated into the isolation bin through the sealed cabin door, and then after closing the sealed cabin door, a closed environment except for the exhaust pipe can be formed inside the isolation bin. At this time, it is only necessary to close the control valve, and then the staff can insert their hands into the operating gloves to take the medicine for operation. In this way, when operating the medicine, the medicine can be operated in a closed environment, thereby effectively preventing the medicine powder from scattering, thereby improving the weighing safety.
[0013] The utility model needs to turn on the air pump every time the sealed cabin door is opened, and then the air inside the isolation chamber is extracted by the air pump and pumped to the inside of the filter box. The air is then discharged from the air outlet after the activated carbon filter block inside the filter box adsorbs and filters the powder, so that negative pressure is formed inside the isolation chamber; the outside air continuously enters from the opening of the sealed cabin door, thereby effectively preventing the powder from scattering and leaking every time the sealed cabin door is opened, thereby further improving the safety of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the overall structure of a negative pressure weighing hood for drug production according to the utility model;
[0015] Figure 2 This is a bottom view of the overall structure of a negative pressure weighing hood for drug production according to the utility model;
[0016] Figure 3 This is a front view of the overall structure of a negative pressure weighing hood for drug production according to the utility model;
[0017] Figure 4 This is a side view of the overall structure of a negative pressure weighing hood for drug production according to the utility model;
[0018] Figure 5 The utility model is a view of the internal structure of a negative pressure weighing cover isolation cover used for medicine production.
[0019] In the figure: 1. bottom plate; 2. filter box; 3. isolation chamber; 4. operation hole; 5. operation gloves; 6. exhaust pipe; 7. air pump; 8. air outlet; 9. sealed cabin door; 10. control switch; 11. control valve; 12. universal wheel. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0021] See also Figure 1-5 The utility model provides a technical solution: a negative pressure weighing hood for drug production, comprising a bottom plate 1, a filter box 2 is fixedly arranged on the upper end of the bottom plate 1, a weighing mechanism for isolated weighing is arranged on the upper end of the filter box 2, the weighing mechanism comprises an isolation chamber 3, an operating hole 4, an operating glove 5, an exhaust pipe 6, and an air pump 7, an isolation chamber 3 is fixedly arranged on the upper end of the filter box 2, operating holes 4 are opened on both sides of the surface of the isolation chamber 3, operating gloves 5 are fixedly arranged on one side of the operating hole 4 inside the isolation chamber 3, an exhaust pipe 6 is fixedly arranged on one side of the surface of the isolation chamber 3, an air pump 7 is arranged between the exhaust pipe 6 and the filter box 2, the air inlet end of the air pump 7 is mutually conductive with the inside of the isolation chamber 3 through the exhaust pipe 6, and the air outlet end of the air pump 7 is mutually conductive with the inside of the filter box 2.
[0022] An air outlet 8 is fixedly provided on one side of the filter box 2 away from the air pump 7. An activated carbon filter block is provided inside the filter box 2. The air pump 7 can extract the air inside the isolation chamber 3 and pump it into the filter box 2. Then, after the activated carbon filter block inside the filter box 2 adsorbs and filters the powder, the air is discharged from the air outlet 8. In this way, the powder in the air can be extracted by the filter element, thereby improving the safety of the device when in use.
[0023] The upper outer surface of the isolation chamber 3 is provided with a sealed door 9 through a hinge, through which the medicine powder and other materials to be operated can be conveniently placed into the isolation chamber 3, and then the sealed door 9 can be closed to form a closed environment inside the isolation chamber 3 except for the exhaust pipe 6. However, it should be noted that each time the sealed door 9 is opened, the air pump 7 should be turned on, and then the air inside the isolation chamber 3 is extracted by the air pump 7, so that a negative pressure is formed inside the isolation chamber 3; the outside air continuously enters from the inside of the sealed door 9, thereby effectively preventing the medicine powder from drifting and leaking;
[0024] A control switch 10 is fixedly arranged on one side of the upper end of the surface of the filter box 2, and the control switch 10 is electrically connected to the pump body; the operation of the pump body can be controlled by the control switch 10;
[0025] The isolation chamber 3 is made of transparent material, such as acrylic or transparent glass, so that the staff can see the internal situation of the isolation chamber 3 and weigh the medicines.
[0026] A control valve 11 is fixedly arranged between the exhaust pipe 6 and the isolation chamber 3, and universal wheels 12 are movably arranged at the four corners of the lower end surface of the base plate 1. The control valve 11 can be closed when operating the medicine, so that the isolation chamber 3 forms a completely enclosed isolation space.
[0027] Working principle: When using this device, the medicine powder and other materials that need to be operated can be conveniently placed in the isolation chamber 3 through the sealed door 9, and then the sealed door 9 can be closed to form a closed environment inside the isolation chamber 3 except for the exhaust pipe 6. At this time, it is only necessary to close the control valve 11, and then the staff inserts their hands into the operating gloves 5 to take the medicine for operation. In this way, when operating the medicine, the medicine can be operated in a closed environment, thereby effectively preventing the powder from scattering, thereby improving the weighing safety;
[0028] However, it should be noted that each time the sealed cabin door 9 is opened, the air pump 7 should be turned on, and then the air inside the isolation chamber 3 is extracted through the air pump 7 and pumped into the filter box 2. The air is then adsorbed and filtered by the activated carbon filter block inside the filter box 2, and then discharged from the air outlet 8, so that a negative pressure is formed inside the isolation chamber 3; outside air continuously enters from the opening of the sealed cabin door 9, thereby effectively preventing the powder from scattering and leaking each time the sealed cabin door 9 is opened, thereby further improving the safety of the device when in use.
[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A negative pressure weighing hood for drug production, comprising a bottom plate (1), characterized in that: A filter box (2) is fixedly arranged at the upper end of the bottom plate (1), and a weighing mechanism for isolated weighing is arranged at the upper end of the filter box (2). The weighing mechanism comprises an isolation chamber (3), an operating hole (4), an operating glove (5), an exhaust pipe (6), and an air pump (7). An isolation chamber (3) is fixedly arranged at the upper end of the filter box (2), and operating holes (4) are provided on both sides of the surface of the isolation chamber (3). An operating glove (5) is fixedly arranged on one side of the operating hole (4) inside the isolation chamber (3), and an exhaust pipe (6) is fixedly arranged on one side of the surface of the isolation chamber (3). An air pump (7) is arranged between the exhaust pipe (6) and the filter box (2), and an air inlet end of the air pump (7) is mutually connected to the interior of the isolation chamber (3) through the exhaust pipe (6), and an air outlet end of the air pump (7) is mutually connected to the interior of the filter box (2).
2. A negative pressure weighing hood for drug production according to claim 1, characterized in that: An air outlet (8) is fixedly provided on a side of the filter box (2) away from the air pump (7), and an activated carbon filter block is arranged inside the filter box (2).
3. The negative pressure weighing hood for drug production according to claim 1, characterized in that: A sealed door (9) is movably provided on the outer surface of the upper end of the isolation chamber (3) via a hinge.
4. The negative pressure weighing hood for drug production according to claim 1, characterized in that: A control switch (10) is fixedly arranged on one side of the upper end of the surface of the filter box (2), and the control switch (10) is electrically connected to the pump body.
5. The negative pressure weighing hood for drug production according to claim 1, characterized in that: The isolation chamber (3) is made of transparent material.
6. The negative pressure weighing hood for drug production according to claim 1, characterized in that: A control valve (11) is fixedly provided between the air extraction pipe (6) and the isolation chamber (3), and universal wheels (12) are movably provided at the four corners of the lower end surface of the bottom plate (1).