CN211133280U - Weighing cabinet - Google Patents
Weighing cabinet Download PDFInfo
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- CN211133280U CN211133280U CN201921733660.5U CN201921733660U CN211133280U CN 211133280 U CN211133280 U CN 211133280U CN 201921733660 U CN201921733660 U CN 201921733660U CN 211133280 U CN211133280 U CN 211133280U
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Abstract
The utility model discloses a weighing cabinet, which comprises a cabinet body, wherein the top of the cabinet body is provided with an air inlet, the air inlet is connected with an air inlet pipe, and an air inlet regulating valve is arranged on the air inlet pipe; the bottom or the side wall of the cabinet body is provided with an air outlet near the bottom end, the air outlet is connected with an air outlet pipe, and the air outlet pipe is connected with a draught fan through an air outlet regulating valve; the cabinet body top still is provided with the second air intake, second air intake connection has the second intake pipe, the second intake pipe is connected with compressed air source for the pharmacy through the second air inlet governing valve. The utility model discloses weigh the cabinet and through setting up the second air intake at cabinet body top, introduce the cabinet body with dry air, mix with the great ambient gas of humidity, reduce the gaseous humidity of the internal portion of cabinet, satisfy the needs of weighing of special medicine.
Description
Technical Field
The utility model relates to a pharmaceutical equipment field specifically is a weigh cabinet.
Background
The weighing cabinet adopts the airflow form of vertical unidirectional flow, and the return air is pre-filtered through the primary and intermediate filters to treat large-particle dust particles in the airflow. The pretreated air passes through a high-efficiency filter to meet the requirement of C-level cleanliness. The clean air flow is sent into the air supply box body, 85% -90% of the clean air flow passes through the flow equalizing air supply screen plate to form uniform vertical air supply air flow, and 10% -15% of the clean air flow passes through the air volume adjusting plate and is discharged out of the equipment. The air flow is processed by the high-efficiency filter, and the air supply and the air exhaust do not carry residual dust, thereby avoiding secondary pollution. Because of the stable unidirectional flow formed in the working area, the dust emitted in the area can be trapped by the primary and intermediate filters along with the streamline under the influence of the unidirectional airflow. The equipment is provided with 10% -15% of exhaust air, so that negative pressure relative to the external environment is formed, dust in the area is prevented from being diffused outdoors to a certain extent, and the phenomenon that materials leak and cross contamination among medicines in the weighing process is avoided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a weighing cabinet which has novel and unique structure and convenient use, and can ensure that the humidity in the cabinet is less than the ambient humidity and is controlled; the specific technical scheme is as follows:
a weighing cabinet comprises a cabinet body, wherein the top of the cabinet body is provided with an air inlet, the air inlet is connected with an air inlet pipe, and an air inlet regulating valve is arranged on the air inlet pipe; the bottom or the side wall of the cabinet body is provided with an air outlet near the bottom end, the air outlet is connected with an air outlet pipe, and the air outlet pipe is connected with a draught fan through an air outlet regulating valve; the cabinet body top still is provided with the second air intake, second air intake connection has the second intake pipe, the second intake pipe is connected with compressed air source for the pharmacy through the second air inlet governing valve.
Furthermore, the second air inlet pipe extends into the cabinet body and is connected with an air knife close to the top of the cabinet body, and dry air is output through the air knife.
Further, a switch valve is arranged between the second air inlet adjusting valve and the compressed air source for pharmacy.
Further, a filter is arranged between the switch valve and the compressed air source for pharmacy.
Further, the air outlet direction of the air knife is vertical downward.
Further, the gas outlet sets up the cabinet body back wall is close to the bottom.
The utility model discloses weigh the cabinet and through setting up the second air intake at cabinet body top, introduce the cabinet body with dry air, mix with the great ambient gas of humidity, reduce the gaseous humidity of the internal portion of cabinet, satisfy the needs of weighing of special medicine.
Drawings
Fig. 1 is the gas circuit schematic diagram of the weighing cabinet of the utility model.
In the figure: 1. a cabinet body; 2. An air outlet regulating valve; 3. an induced draft fan; 4. an air inlet regulating valve; 5. A second intake air regulating valve; 6. an on-off valve; 7. a filter; 8. and (4) an air knife.
Detailed Description
The present invention will be more fully described with reference to the following examples. The present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.
For ease of description, spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1, the weighing cabinet in this embodiment includes a cabinet body 1, an air inlet is formed at the top of the cabinet body 1, the air inlet is connected with an air inlet pipe, and an air inlet regulating valve 4 is arranged on the air inlet pipe; the bottom or the side wall of the cabinet body 1 is provided with an air outlet near the bottom end, the air outlet is connected with an air outlet pipe, and the air outlet pipe is connected with a draught fan 3 through an air outlet regulating valve 2; the top of the cabinet body 1 is also provided with a second air inlet which is connected withThere is a second inlet pipe which is connected to a source of compressed air for pharmacy (not shown in the figure) through a second inlet regulating valve 5. The compressed air source for pharmacy can be a gas tank or a compressor set; the water content of the generated compressed air for pharmacy is less than 100mg/m3. The relative humidity of the environment in a clean room is typically 75%; the inlet of the air inlet pipe is connected with the environment outside the cabinet body 1, so that the ambient air with the relative humidity of 75% can be introduced into the cabinet body 1; the internal weighing platform that is provided with of cabinet, hygrometer or humidity transducer set up in the top of weighing the platform, are close to cabinet 1 middle part. The humidity of the dry gas introduced by the second air inlet pipe is reduced after the dry gas is mixed with the environmental gas introduced by the air inlet pipe; the flow rate of the drying gas is adjusted by the second air intake adjusting valve 5; thereby adjusting the humidity of the mixed gas; in practice, the drying gas may be adjusted to a desired flow rate based on the feedback from the hygrometer or humidity sensor.
In order to mix more fully, can stretch into the cabinet internally with the second intake pipe from the second air intake, be connected with the air knife 8 that is close to cabinet body top, export dry gas through air knife 8.
A switch valve 6 can be arranged between the second air inlet adjusting valve 5 and the compressed air source for pharmacy; the air inlet of the second air inlet can be closed quickly when the weighing machine is used for weighing.
A filter 7 may be provided between the on-off valve 6 and the compressed air source for pharmacy; the gas entering the cabinet body is ensured to meet the requirements of production environment.
The air outlet direction of the air knife is vertical downward, so that the reduction speed of the air humidity in the cabinet body is higher.
The air outlet is arranged on the rear wall of the cabinet body close to the bottom end; the influence on the air flow in the cabinet body 1 is small, and meanwhile, a bottom connecting pipeline can be avoided, so that the equipment is more convenient to install.
When the cabinet is used, the draught fan 3 is firstly opened to pump the gas in the cabinet body outwards, and micro negative pressure is formed in the cabinet body. According to the barometer in the cabinet body, the air pressure in the cabinet body can be adjusted to a specified micro negative pressure value by adjusting the air inlet adjusting valve 4 and the air outlet adjusting valve 2. The frequency converter can also be used for providing driving power for the induced draft fan 3, so that the power of the induced draft fan 3 can be adjusted, and the micro negative pressure in the cabinet body can be adjusted in an auxiliary manner by adjusting the power of the induced draft fan 3. The ambient air outside the cabinet body enters the cabinet body through the air inlet regulating valve 4; the gas in the cabinet body is discharged out of the cabinet body through the air outlet adjusting valve 2 by the induced draft fan 3. When the medicine to be weighed needs low relative humidity, the humidity of the environmental air in a workshop needs to be reduced by using an air conditioning system in the past; not only has long time, but also has high energy consumption. The weighing cabinet in the embodiment is utilized; only need open ooff valve 6, the compressed air for dry pharmacy is spouted from the air knife from the air supply through filter 7, second inlet damper 5, mixes with the internal gas of cabinet, reduces the humidity of the internal gas of cabinet. By adjusting the air inlet adjusting valve 4, the second air inlet adjusting valve 5 and the air outlet adjusting valve 2; can form an environment which not only keeps the micro negative pressure in the cabinet body, but also accords with the humidity required by weighing the medicines.
Through improvement, the weighing cabinet can be basically switched to 60% relative humidity within ten minutes; compared with the change of the relative humidity of the whole workshop, the method saves a large amount of energy; the switching time is also greatly shortened.
The above examples are only for illustrating the present invention, and besides, there are many different embodiments, which can be conceived by those skilled in the art after understanding the idea of the present invention, and therefore, they are not listed here.
Claims (6)
1. A weighing cabinet comprises a cabinet body, wherein the top of the cabinet body is provided with an air inlet, the air inlet is connected with an air inlet pipe, and an air inlet regulating valve is arranged on the air inlet pipe; the bottom or the side wall of the cabinet body is provided with an air outlet near the bottom end, the air outlet is connected with an air outlet pipe, and the air outlet pipe is connected with a draught fan through an air outlet regulating valve; the refrigerator is characterized in that a second air inlet is further formed in the top of the cabinet body, a second air inlet pipe is connected to the second air inlet, and the second air inlet pipe is connected with a compressed air source for pharmacy through a second air inlet adjusting valve.
2. The weighing cabinet of claim 1, wherein the second inlet tube extends into the cabinet body and is connected to an air knife near the top of the cabinet body, and dry air is output through the air knife.
3. The weighing cabinet of claim 1, wherein a switch valve is disposed between the second air inlet regulating valve and the source of pharmaceutical compressed air.
4. The weighing cabinet of claim 3, wherein a filter is provided between the on-off valve and the source of pharmaceutical compressed air.
5. The weighing cabinet of claim 2, wherein the air outlet direction of the air knife is vertically downward.
6. The weighing cabinet of claim 1, wherein the air outlet is disposed in the rear wall of the cabinet body near the bottom end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921733660.5U CN211133280U (en) | 2019-10-16 | 2019-10-16 | Weighing cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921733660.5U CN211133280U (en) | 2019-10-16 | 2019-10-16 | Weighing cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211133280U true CN211133280U (en) | 2020-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921733660.5U Active CN211133280U (en) | 2019-10-16 | 2019-10-16 | Weighing cabinet |
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| Country | Link |
|---|---|
| CN (1) | CN211133280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049072A (en) * | 2021-03-12 | 2021-06-29 | 中国五冶集团有限公司 | Weighing device with flow equalizing air curtain structure in clean room |
-
2019
- 2019-10-16 CN CN201921733660.5U patent/CN211133280U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049072A (en) * | 2021-03-12 | 2021-06-29 | 中国五冶集团有限公司 | Weighing device with flow equalizing air curtain structure in clean room |
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