Negative pressure weighing cover with scanning detection function

Abstract

The utility model relates to a negative pressure weighing cover with a scanning detection function, which comprises a cover body and an air return channel, the air return channel is arranged at the bottom end in the cover body, the negative pressure weighing cover comprises a bag inlet and outlet device, and the bag inlet and outlet device is arranged in the air return channel; a scanning assembly is further arranged in the cover body, and the scanning assembly is arranged above the bag inlet and outlet device and matched with the bag inlet and outlet device. According to the bag feeding and discharging device, the scanning assembly is arranged in the cover body, the scanning assembly is matched with the bag feeding and discharging device and the high-efficiency filter and used for automatically detecting the integrity of the high-efficiency filter matched with the bag feeding and discharging device, leakage of high-risk materials is further avoided, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of clean purification, in particular to a negative pressure weighing cover with a scanning detection function. Background Art

[0002] Negative pressure weighing hood is a kind of laboratory equipment, which is mainly used to provide a clean, dust-free and sterile working environment in the process of sampling, weighing and analysis in the pharmaceutical, chemical and food industries. It creates a negative pressure environment by establishing a pressure environment lower than the outside atmospheric pressure, so that the air in the room will not flow to the outside naturally. This design effectively prevents the leakage of indoor pollutants, reduces the risk of cross-contamination between different drugs or materials, and can protect the external environment and operators.

[0003] In terms of material weighing operation procedures, when performing high-risk weighing operations, traditional negative pressure weighing hoods only provide a simple negative pressure function and cannot provide better protection. During weighing operations, operators may still come into contact with high-risk materials when they come into contact with materials or when changing filters on equipment, and they will be exposed to high-risk environments. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a negative pressure weighing hood with a scanning and detection function to solve one or more problems in the prior art.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A negative pressure weighing hood with a scanning and detection function comprises a hood body and a return air channel, wherein the return air channel is arranged at the bottom end of the hood body; the negative pressure weighing hood comprises a bag in and bag out device, wherein the bag in and bag out device is arranged inside the return air channel; a scanning component is also arranged inside the hood body, wherein the scanning component is arranged above the bag in and bag out device and cooperates with the bag in and bag out device.

[0007] Furthermore, the scanning assembly includes a screw rod, a support rod, a fixing member and a motor, and both ends of the screw rod and the support rod are respectively connected to the fixing member.

[0008] Furthermore, the scanning assembly also includes a motor and a scanning part, the motor is connected to one end of the lead screw and cooperates with the lead screw, and the scanning part is movably arranged on the lead screw and the support rod.

[0009] Furthermore, the scanning unit includes a support, a connecting plate and a scanning component, the support cooperates with the lead screw and the support rod, and the scanning component, the connecting plate and the support are connected in sequence in an upper and lower position relationship.

[0010] Furthermore, the connecting plate includes an adjusting member, the scanning member includes a bracket, and the bracket cooperates with the adjusting member.

[0011] Furthermore, a high-efficiency filter and a fan are also arranged in the cover body, a part of the high-efficiency filter is arranged between the bag in and out device and the scanning component, and the other part is arranged at the top of the cover body, and the fan is arranged between the scanning component and the high-efficiency filter at the top.

[0012] Furthermore, the surface of the cover body is respectively provided with a first ventilation plate and a second ventilation plate which cooperate with the return air channel and the high efficiency filter at the top.

[0013] Furthermore, the high efficiency filter at the top is also connected to a flow equalizing membrane.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0015] (I) By setting up a return air channel and a bag in and out device, the harmful and active dust scattered by weighing can be collected, which can not only meet the weighing function but also achieve safety protection.

[0016] (ii) By arranging a scanning component in the cover body, the scanning component cooperates with the bag-in-bag-out transpose and the high-efficiency filter to automatically detect the integrity of the high-efficiency filter matched with the bag-in-bag-out device, thereby further avoiding the leakage of high-risk materials and ensuring the safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure diagram of a negative pressure weighing cover with scanning detection function in the embodiment of the utility model is shown. Figure Ⅰ .

[0018] Figure 2 The structure diagram of a negative pressure weighing cover with scanning detection function in the embodiment of the utility model is shown. Figure II .

[0019] Figure 3 The structure diagram of the scanning component of a negative pressure weighing cover with scanning detection function in the embodiment of the utility model is shown. Figure Ⅰ .

[0020] Figure 4 The structure diagram of the scanning component of a negative pressure weighing cover with scanning detection function in the embodiment of the utility model is shown. Figure II .

[0021] Figure 5 A partial structural schematic diagram of a bag inlet and outlet device of a negative pressure weighing hood with a scanning and detection function according to an embodiment of the utility model is shown.

[0022] Figure 6 A schematic structural diagram of a high-efficiency filter and a scanning component of a negative pressure weighing hood with a scanning detection function according to an embodiment of the utility model is shown.

[0023] Markings in the attached drawings: 1, cover; 2, return air channel; 3, scanning component; 301, screw rod; 302, support rod; 303, fixing part; 304, motor; 305, scanning part; 3051, support; 3052, connecting plate; 30521, adjustment part; 3053, scanning part; 30531, bracket; 4, high-efficiency filter; 5, fan; 6, first ventilation plate; 7, second ventilation plate; 8, sensor; 9, first Interface; 10. Second interface; 11. Third interface; 12. Fourth interface; 13. First differential pressure gauge; 14. Second differential pressure gauge; 15. Control component; 1501. Display; 1502. Emergency stop button; 1503. Buzzer; 1504. Power button; 16. Lighting switch; 17. Socket panel; 18. Network port socket; 19. Inspection panel; 20. Flow equalizing membrane; 21. Sampling port; 22. Bag in and out device. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the following is a further detailed description of a negative pressure weighing hood with a scanning detection function proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and all use non-precise proportions. The terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, rather than indicating or implying that the negative pressure weighing hood or element with a scanning detection function must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model, but only to facilitate and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings.

[0025] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions for the implementation of the utility model, so they have no substantive technical significance. Any modification of the structure, change in the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model.

[0026] The specific structure of a negative pressure weighing hood with scanning detection function is described below:

[0027] See also Figures 1 to 6 The negative pressure weighing hood structure with scanning function of this embodiment includes a hood body 1 and a return air channel 2. The return air channel 2 is arranged at the bottom end of the hood body 1. The negative pressure weighing hood includes a bag in and bag out device 22. The bag in and bag out device 22 is arranged inside the return air channel 2.

[0028] Furthermore, a scanning component 3 is also disposed inside the cover body 1 , and the scanning component 3 is disposed above the bag-in-bag-out device 22 and cooperates with the bag-in-bag-out device 22 .

[0029] Furthermore, a high-efficiency filter 4 and a fan 5 are also arranged in the cover body 1. A part of the high-efficiency filter 4 is arranged between the bag in and out device 22 and the scanning component 3, and the other part is arranged at the top of the cover body 1. The fan 5 is arranged between the scanning component 3 and the top high-efficiency filter 4.

[0030] Furthermore, the high efficiency filter 4 at the top is also connected to a flow equalizing membrane 20, and the flow equalizing membrane 20 is preferably made of a high molecular polymer material, which is light-permeable and air-permeable, and is used to provide a certain resistance to the wind and achieve the function of equalizing the airflow.

[0031] Further, the scanning assembly 3 includes a screw rod 301, a support rod 302, a fixing member 303 and a motor 304. The ends of the screw rod 301 and the support rod 302 are respectively connected to the fixing member 303. Preferably, the surface of the screw rod 301 is covered with threads between the fixing members 303. The scanning assembly 3 also includes a motor 304 and a scanning unit 305. The motor 304 is connected to one end of the screw rod 301 and cooperates with the screw rod 301. By driving the rotation of the motor 304, the scanning unit 305 disposed on the screw rod 301 and the support rod 302 can be moved.

[0032] Further, the scanning unit 305 includes a support 3051, a connecting plate 3052 and a scanning piece 3053. The support 3051 is provided with a through hole matched with the screw rod 301 and the support rod 302. The scanning piece 3053, the connecting plate 3052 and the support 3051 are connected in sequence in an upper and lower position relationship. The connecting plate 3052 includes an adjusting piece 30521, and the scanning piece 3053 includes a bracket 30531, and the bracket 30531 is matched with the adjusting piece 30521. By adjusting the adjusting piece 30521, the height of the scanning piece 3053 relative to the support 3051 can be changed.

[0033] Furthermore, the surface of the cover body 1 is respectively provided with a first ventilation plate 6 and a second ventilation plate 7 which cooperate with the return air channel 2 and the top high-efficiency filter 4. Preferably, the first ventilation plate 6 is a return air hole plate, and the second ventilation plate 7 is an adjustable exhaust hole plate, and ventilation holes are arranged on the surfaces of the first ventilation plate 6 and the second ventilation plate 7.

[0034] Furthermore, an inspection panel 19 is also provided on the surface of the cover body 1, and the inspection panel 19 is fixedly connected to the front end of the cover body 1 by screws. A first interface 9, a second interface 10, a third interface 11 and a fourth interface 12 are provided on the inspection panel 19. Preferably, the first interface 9 and the second interface 10 are respectively a PAO detection port and a PAO dust outlet, which are quick-connect interfaces for connecting high-efficiency detection equipment. The third interface 11 and the fourth interface 12 are respectively a sampling outlet and a dust outlet of the bag-in-bag-out device 22 and are respectively provided at the left and right ends of the inspection panel 19.

[0035] Furthermore, the surface of the inspection panel 19 is also provided with a sensor 8, a first differential pressure gauge 13, a second differential pressure gauge 14 and a sampling port 21. Preferably, the sensor 8 is a wind speed sensor, which cooperates with the fan 5 and monitors the size of the air volume when the fan 5 is running. The first differential pressure gauge 13 and the second differential pressure gauge 14 are respectively the high-efficiency differential pressure gauge and the air supply high-efficiency differential pressure gauge of the high-efficiency filter 4 at the upper end of the bag-in-bag-out device 22. The first differential pressure gauge 13 and the second differential pressure gauge 14 are both used to cooperate in monitoring the differential pressure value of the high-efficiency filter 4. The sampling port 21 cooperates with the scanning component 3. After the scanning component 3 performs scanning detection, the operator can perform sampling analysis through the sampling port 21.

[0036] Furthermore, the surface of the inspection panel 19 is also provided with a control component 15, a lighting switch 16, a socket panel 17 and an Ethernet socket 18, and the lighting switch 16, the socket panel 17 and the Ethernet socket 18 are all equipped with buttons for convenient operation by the operator. The control component 15 includes a display 1501, an emergency stop button 1502, a buzzer 1503 and a power button 1504. The display 1501 is used to display the monitoring values, program progress, etc., the emergency stop button 1502 is used to stop all operations of the equipment in time when danger occurs, the buzzer 1503 is used to monitor the equipment for failure or improper operation, etc., and the power button 1504 is used to turn the equipment on or off.

[0037] The specific working process of a negative pressure weighing cover with a scanning detection function described in the embodiment of the utility model is described as follows:

[0038] The return air first passes through the first ventilation plate 6 and enters the bag-in-bag-out device 22, so as to collect harmful and active dust substances that may be generated during the weighing process to ensure the safety of the operator. The return air is then filtered again through the high-efficiency filter 4 above the bag-in-bag-out device 22, and then the integrity of the high-efficiency filter 4 above the bag-in-bag-out device 22 is automatically tested by the scanning component 3. Finally, under the action of the fan 5, the return air passes through the high-efficiency filter 4 on the top of the cover body 1 and is finally filtered and discharged.

[0039] The operating principle of the scanning component 3 is that the lead screw 301 and the support rod 302 are arranged in the middle, the scanning unit 305 is sleeved on the lead screw 301 and the support rod 302, and the motor 304 is added on the outside. The motor 304 can rotate forward and reversely to drive the lead screw 301 in the middle to rotate, and the scanning unit 305 scans due to the forward and backward movement of the lead screw 301 thread.

[0040] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A negative pressure weighing hood with scanning and detection function, comprising a hood body and a return air channel, wherein the return air channel is arranged at the bottom of the hood body, and is characterized in that: The negative pressure weighing hood includes a bag-in-bag-out device, which is arranged inside the return air channel; a scanning component is also arranged inside the hood body, and the scanning component is arranged above the bag-in-bag-out device and cooperates with the bag-in-bag-out device.

2. A negative pressure weighing hood with scanning and detection function as claimed in claim 1, characterized in that: The scanning assembly comprises a screw rod, a support rod, a fixing piece and a motor, and the two ends of the screw rod and the support rod are respectively connected to the fixing piece.

3. A negative pressure weighing hood with scanning and detection function as claimed in claim 2, characterized in that: The scanning assembly also includes a motor and a scanning part. The motor is connected to one end of the lead screw and matched with the lead screw. The scanning part is movably arranged on the lead screw and the support rod.

4. A negative pressure weighing hood with scanning and detection function as claimed in claim 3, characterized in that: The scanning part comprises a support, a connecting plate and a scanning element. The support is matched with the lead screw and the support rod. The scanning element, the connecting plate and the support are connected in sequence in an upper and lower position relationship.

5. A negative pressure weighing hood with scanning and detection function as claimed in claim 4, characterized in that: The connecting plate includes an adjusting member, and the scanning member includes a bracket, and the bracket is matched with the adjusting member.

6. A negative pressure weighing hood with scanning and detection function as claimed in claim 1, characterized in that: A high efficiency filter and a fan are also arranged in the cover body, a part of the high efficiency filter is arranged between the bag in and out device and the scanning component, and the other part is arranged at the top of the cover body, and the fan is arranged between the scanning component and the high efficiency filter at the top.

7. A negative pressure weighing hood with scanning and detection function as claimed in claim 6, characterized in that: The surface of the cover body is respectively provided with a first ventilation plate and a second ventilation plate which are matched with the return air channel and the high efficiency filter at the top.

8. A negative pressure weighing hood with scanning and detection function as claimed in claim 7, characterized in that: The high efficiency filter at the top is also connected with a flow equalizing membrane.

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