Bag-in and bag-out sampling head structure

Abstract

The utility model relates to a bag-in and bag-out sampling head structure which comprises a box body, a sealing frame is arranged in the box body, a sliding groove is formed in the surface of the sealing frame, and a moving assembly capable of sliding relative to the sliding groove is arranged in the sliding groove in a matched mode. The moving assembly comprises a center shaft, a rolling shaft and a clamping spring, the rolling shaft is connected to the center shaft in a sleeving mode and can rotate relative to the center shaft, a concave part is arranged on the surface of the end, close to the sliding groove, of the center shaft, and the clamping spring is arranged in the concave part. By designing the moving assembly composed of the center shaft, the rolling shaft and the clamping spring, the contact area between the rolling shaft and the sliding groove is increased through the rolling shaft, the clamping phenomenon in the moving process is effectively avoided, in addition, the clamping spring is arranged on the center shaft, the contact range of the rolling shaft can be restrained, the rolling shaft does not make contact with the bottom of the sliding groove, and the service life of the rolling shaft is prolonged. A certain distance is reserved, so that the sagging problem is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of biosafety, in particular to a bag-in-bag-out sampling head structure. Background Art

[0002] Bag-in-bag-out sampling heads are typically used in environments requiring high isolation and safety, particularly in high-risk areas such as biosafety laboratories, pharmaceutical engineering, and vaccine production workshops. Bag-in-bag-out sampling heads require a full scan of the filter's outlet surface, requiring in-situ scanning capabilities. Existing sampling heads rely on pulleys operating on guide rails to achieve stable scanning, ensuring safe and efficient sample collection while minimizing worker exposure risk.

[0003] The pulleys at both ends of the existing bag-in and bag-out sampling heads are mechanical friction pulleys, which often fail to operate, causing the pulleys to get stuck with the guide rails. Moreover, when the running stroke is too large, the middle supporting screw rod is prone to drooping in the middle, causing friction between the lower end of the sampling head and the guide rail, and even causing the problem of getting stuck. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a bag-in-bag-out sampling head structure 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 bag-in-bag-out sampling head structure comprises a box body, a sealing frame is arranged in the box body, a slide groove is arranged on the surface of the sealing frame, and a moving component that can slide relative to the slide groove is matched in the slide groove.

[0007] Furthermore, the structure includes a screw rod and a sampling head, the screw rod is fixed to the box body, and the sampling head is movably matched with the screw rod.

[0008] Furthermore, the screw rod and the slide groove are arranged parallel to each other.

[0009] Furthermore, the moving assembly includes a central shaft and a roller, and the roller is sleeved on the central shaft and rotatable relative to the central shaft.

[0010] Furthermore, one end of the central shaft is connected to the sampling head, and the other end of the central shaft is arranged to abut against the groove surface of the sliding groove.

[0011] Furthermore, the outer diameter of the roller matches the width of the sliding groove.

[0012] Furthermore, a recessed portion is provided on the surface of the central axis close to one end of the slide groove.

[0013] Furthermore, the moving assembly further includes a retaining spring, which is disposed in the recessed portion.

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

[0015] The utility model designs a moving assembly consisting of a central shaft, a roller and a retaining spring. The roller increases the contact area with the slide groove, effectively avoiding the jamming phenomenon during the movement. In addition, the retaining spring is arranged on the central shaft, which can constrain the contact range of the roller and prevent it from contacting the bottom of the slide groove, maintaining a certain distance and preventing sagging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a bag-in, bag-out sampling head structure according to an embodiment of the present invention is shown.

[0017] Figure 2 The schematic diagram of the structure of the moving assembly of the bag-in-bag-out sampling head structure of the embodiment of the utility model is shown. Figure I .

[0018] Figure 3 The schematic diagram of the structure of the moving assembly of the bag-in-bag-out sampling head structure of the embodiment of the utility model is shown. Figure II .

[0019] Figure 4 An enlarged view of the structure of the cooperation between the moving component and the slide groove of a bag-in-bag-out sampling head structure according to an embodiment of the present invention is shown.

[0020] Markings in the accompanying drawings: 1. Box body; 2. Sealing frame; 3. Slide groove; 4. Moving component; 401. Center axis; 4011. Recessed portion; 402. Roller; 403. Retaining spring; 5. Screw rod; 6. Sampling head. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following is a further detailed description of a bag-in-bag-out sampling head structure proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become more clear. It should be noted that the drawings are in a very simplified form and all use non-precise scales. 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 drawings, and do not indicate or imply that the bag-in-bag-out sampling head structure or components referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention, but are only used to conveniently and clearly assist in explaining the purpose of the embodiment of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings.

[0022] 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 this utility model and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this utility model without affecting the effects and purposes that can be achieved by this utility model.

[0023] The following describes the specific structure of a bag-in-bag-out sampling head structure:

[0024] See also Figures 1 to 4 The bag-in-bag-out sampling head structure of this embodiment includes a box body 1, and a sealing frame 2 is provided in the box body 1 to ensure the airtightness between the filter unit and the box body 1 to prevent unfiltered air or pollutants from entering the box body 1.

[0025] Furthermore, the structure includes a screw rod 5 and a sampling head 6. The screw rod 5 is fixed to the box body 1, and the sampling head 6 is movably matched with the screw rod 5. The screw rod 5 and the chute 3 are arranged parallel to each other to improve the stability of the screw rod 5 when moving.

[0026] Furthermore, a slide groove 3 is provided on the surface of the sealing frame 2. Preferably, in this embodiment, one slide groove 3 is provided on each of the upper and lower surfaces of the sealing frame 2. A moving component 4 that can slide relative to the slide groove 3 is provided in the slide groove 3.

[0027] Furthermore, the moving assembly 4 includes a central shaft 401 and a roller 402. The roller 402 is sleeved on the central shaft 401 and rotatable relative to the central shaft 401. One end of the central shaft 401 is connected to the sampling head 6, and the other end of the central shaft 401 is disposed against the surface of the chute 3. The outer diameter of the roller 402 matches the width of the chute 3, thereby allowing the roller 402 to slide on the chute 3.

[0028] Furthermore, the central axis 401 is provided with a recessed portion 4011 on the surface near one end of the slide groove 3, and the movable component 4 also includes a retaining spring 403, and the retaining spring 403 is provided in the recessed portion 4011. The retaining spring 403 increases the contact range of the roller 402 and ensures that the roller 402 does not contact the bottom of the slide groove 3, retaining a certain distance to prevent sagging.

[0029] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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. The above-mentioned embodiments only express several implementation methods of the utility model. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the utility model, several variations and improvements can be made, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A bag-in-bag-out sampling head structure, comprising a box body, a sealing frame provided within the box body, and a slide groove provided on the surface of the sealing frame, characterized in that: The slide groove is equipped with a movable component that can slide relative to the slide groove; the movable component includes a central axis and a roller, the roller is sleeved on the central axis and can rotate relative to the central axis, the central axis is provided with a recessed portion on the surface near one end of the slide groove, and the movable component also includes a retaining spring, which is provided in the recessed portion.

2. The bag-in, bag-out sampling head structure according to claim 1, characterized in that: The structure includes a screw rod and a sampling head. The screw rod is fixed to the box body, and the sampling head is movably matched with the screw rod.

3. The bag-in, bag-out sampling head structure according to claim 2, characterized in that: The screw rod and the sliding groove are arranged parallel to each other.

4. The bag-in, bag-out sampling head structure according to claim 3, characterized in that: One end of the central shaft is connected to the sampling head, and the other end of the central shaft is arranged in contact with the groove surface of the chute.

5. The bag-in, bag-out sampling head structure according to claim 4, characterized in that: The outer diameter of the roller is matched with the width of the sliding groove.

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