CN108730519B - Sealant seat with negative pressure supporting platform and manufacturing method - Google Patents

Abstract

The invention discloses a sealant seat with a negative pressure supporting platform, which comprises a sealant seat, wherein the sealant seat is provided with an upper opening and a lower opening, and the upper opening is larger than the lower opening; the lower opening of the rubber seat is in a gradual-change funnel shape from large to small; the upper part of the negative pressure suction pipe is provided with a funnel-shaped outer pocket matched with the outer wall of the bottom of the rubber seat; an upper boss and a lower boss are arranged on the outer side surface of the upper part of the rubber seat; the upper boss and the lower boss are arranged at intervals to form a clamping groove for pressing the rubber seat; a positioning step is arranged below the lower boss; the upper part of the inner wall of the rubber seat is provided with a sealing step, and a connecting step is arranged below the sealing step at intervals. The invention aims to provide a sealant seat with a negative pressure supporting platform, so that batch specimens can be accurately and safely placed on the working level of automatic equipment, and poor sealing and liquid leakage and overflow are avoided. The invention also improves the manufacturing method of the sealant seat with the negative pressure supporting platform, eliminates the gap and avoids the mutual pollution of the dyeing liquid.

Description

A sealant seat with a negative pressure support platform and its production method

Technical field

The invention relates to a working level of automated equipment for inspection and detection using membrane separation technology in the fields of medicine, biology, environment, etc. Specifically, it is a sealant with a negative pressure support platform for microporous filter membrane cups. Seats and production methods.

Background technique

Using a microporous filter membrane to collect tangible substances in specimens and directly transparentizing the filter membrane for observation under a microscope is a new morphological detection technology that can be widely used in the detection of tiny tangible substances in medical examinations and other fields. However, Because the microporous filter membrane is soft and fragile, it is limited in one aspect. The methods used are basically directly pasted on the bottom of the sandwich cup or mechanically fixed through the sandwich cup to form a filtration type microporous filter membrane cup.

In order to make the microporous membrane cup suitable for the operation of automated equipment, a clamping or fixing device for the microporous membrane cup that can be operated in batches is needed, so that batch specimens can be accurately and safely placed on the working level of the automated equipment, and in conjunction with The negative pressure suction device on the automated equipment is accurately sealed and connected to realize the automated detection of large batches of specimens.

For example, the Chinese patent application number is CN201620850964. The cup holder bottom plate mesh is provided on the bottom plate of the rack corresponding to the position where the microporous filter membrane cup is installed. A negative pressure sealing bowl is provided directly below the cup holder bottom plate mesh. The negative pressure sealing bowl is embedded in the support plate and locked by a fixed buckle. Closely attached to the bottom plate of the cup holder, the lower end of the negative pressure sealing bowl is connected with a negative pressure device that attracts the contents downward. The purpose of the present invention is to provide a microporous filter membrane cup fixing bracket that facilitates the automatic and rapid fixation of the microporous filter membrane cup, realizes the automated integrated operation of fixing, dyeing, negative pressure control, and heating, reduces operating procedures, and saves operating time. , the procedure of sample transfer during detection is reduced and the accuracy is higher. However, this structure uses a sealing bowl to fully seal the mesh of the bottom plate of the cup holder. During the multiple digestion and dyeing processes, under the action of negative pressure suction, there are poor sealing effects, leakage, overflow, etc., which seriously pollute the environment; At the same time, there is mutual contamination of dyeing solutions.

Contents of the invention

The purpose of the present invention is to address the above problems and provide a sealant seat with a negative pressure support platform, so as to accurately and safely place batch specimens on the working level of automated equipment and avoid poor sealing and leakage and overflow.

Another object of the present invention is to improve a method for manufacturing a sealant seat with a negative pressure support platform.

In order to achieve the above purpose, the technical solution adopted by the present invention is: a sealant seat with a negative pressure support platform, including a rubber seat, the rubber seat has upper and lower openings, and the upper end opening is larger than the lower end opening; the lower end of the rubber seat The opening is gradually funnel-shaped from large to small; the upper part of the negative pressure suction pipe is set as a funnel-shaped outer pocket that matches the outer wall of the bottom of the rubber seat; the outer surface of the upper part of the rubber seat is provided with an upper boss and a lower Boss; the upper boss and the lower boss are spaced apart to form a slot for pressing the rubber seat; a positioning step is provided below the lower boss; a sealing step is provided on the upper part of the inner wall of the rubber seat, and the seal Connecting steps are provided at intervals below the steps.

Further, the bottom of the glue base is connected to a negative pressure suction pipe; the upper part of the negative pressure suction pipe is configured as a funnel-shaped outer pocket that matches the outer wall of the bottom of the glue base.

Furthermore, the outer pocket is made of hard material, and a truncated cone-shaped rubber pad is provided between the bottoms of the rubber seats of the outer pocket.

Furthermore, an extension part is provided at the end of the lower opening of the rubber seat; the extension part extends into the outer pocket.

Further, the mesh number of the upper mesh layer is greater than the mesh number of the lower mesh layer; the mesh number of the lower mesh layer is 20-40 mesh; and the mesh number of the upper mesh layer is 80-150 mesh.

Furthermore, the lower mesh layer is made of staggered steel wires with a wire diameter of 0.5-0.8mm.

Further, the connecting step protrudes inwardly from the edge by 0.5-1mm.

The method for making any of the above-mentioned sealant seats with a negative pressure support platform includes the following steps:

A. Prepare materials, make rubber seats and support platforms respectively.

B. Assembling, use the softness of the rubber seat to insert the support platform under the connecting step in the rubber seat;

C. Glue sealing: Adhesive will be used to fill the connection between the support platform and the connecting step to make it bond and seal;

D. Drying, put the rubber base processed in step C into the drying device at a temperature of 50-70°C and a time of 5-20 minutes.

Preferably, the adhesive is flowable silicone or silicone adhesive.

Preferably, in step C, a syringe is used to slowly spray the adhesive downward along the edge of the connecting step, and through the mesh of the supporting platform, the connecting step is sealed on the inner wall.

The beneficial effects of the present invention: enable batch specimens to be accurately and safely placed on the working level of automated equipment, avoiding poor sealing, leakage and overflow:

1. There is a sealing step on the upper part of the inner wall of the rubber seat, and there are connecting steps at intervals below the sealing step. When assembling the microporous membrane cup, the connecting step blocks the bottom of the microporous membrane cup, and the sealing step blocks the middle part to achieve a double-layer sealing effect. ;

2. The outer pocket is made of hard material, and there is a truncated cone-shaped rubber pad between the bottom of the outer pocket's rubber seats; this reduces the deformation caused by negative pressure suction and further improves the sealing effect;

3. The extension extends to the outer pocket, allowing most of the liquid to be discharged directly into the negative pressure pipe, while a small amount of slow-flowing liquid is in the shape of a gradient funnel from large to small due to the lower opening of the rubber seat, which is a bevel contact seal. No spillage;

4. It is supported by a combination of the upper mesh layer and the lower mesh layer, and the mesh number of the upper mesh layer is greater than the mesh number of the lower mesh layer. The upper mesh layer uses a higher mesh layer to provide the permeability and performance of the microporous filter membrane. Disperse the force to prevent the microporous filter membrane from sinking into the mesh of the lower mesh layer due to negative pressure; while the lower mesh avoids collapse due to insufficient support of the mesh layer alone, causing the bottom of the microporous filter membrane to be adsorbed Pocket-like shape, thus affecting detection;

5. The lower mesh layer is made of staggered braided steel wires with a diameter of 0.5-0.8mm, which provides good support. At the same time, the staggered braided steel wires make the upper mesh layer and the lower mesh layer have uneven surfaces when they come into contact, which avoids The tension of the liquid blocks the mesh of the large mesh layer;

6. The invention provides a method for making a sealant seat with a negative pressure support platform, which effectively eliminates the time gap between the support platform and the rubber seat. The existence of this gap makes the dyeing process When the liquid is discharged through the negative pressure suction tube through the negative pressure, a lot of liquid remains in the gap. After the next dyeing liquid is added, the remaining dyeing liquid from the last time will flow out from the gap and mix with the newly added dyeing liquid, thereby causing Contamination by dyeing liquid, and it is difficult to completely bond the metal material and silicone rubber seat. On the one hand, the present invention uses flowing silicone (20-25°C) or silicone adhesive to achieve good bonding performance. On the other hand, the connecting steps are set to The inside protrudes from the edge, allowing the adhesive to pass through the mesh of the support platform and adhere to the inner wall of the lower opening of the glue base, sealing the edge outside, thereby achieving the overall sealing of the inner wall, ensuring no gaps to retain liquid, and improving processing , detection efficiency.

Description of the drawings

Figure 1 is a schematic diagram of the assembly state of the rubber seat of the present invention.

Figure 2 is a schematic cross-sectional structural diagram of the support platform of the present invention.

The text labels in the figure are as follows: 1. Rubber seat; 2. Sealing step; 3. Connection step; 4. Extension; 5. Negative pressure suction pipe; 6. Pressure plate; 7. Bottom plate; 71. Locking parts ; 8. Support platform; 9. Microporous membrane cup; 11. Upper boss; 12. Lower boss; 13. Card slot; 14. Positioning step; 51. Outer pocket; 52. Rubber pad; 81. Net hole layer; 82, lower mesh layer; 83, edge wrapping;.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and shall not limit the scope of the present invention in any way. .

As shown in Figures 1 and 2, the specific structure of the present invention is: a sealant seat with a negative pressure support platform, including a sealant seat 1 arranged on a negative pressure suction pipe 5, and the sealant seat 1 is The upper and lower openings are open, and the upper end opening is larger than the lower end opening; the lower opening of the rubber seat 1 is gradually funnel-shaped from large to small; the upper part of the negative pressure suction pipe 5 is set in a funnel shape that matches the bottom outer wall of the rubber seat 1 The outer pocket 51; the upper outer surface of the rubber seat 1 is provided with an upper boss 11 and a lower boss 12; the upper boss 11 and the lower boss 12 are spaced apart to form a slot 13 for pressing the rubber seat; A positioning step 14 is provided below the lower boss 12; a sealing step 2 is provided on the upper part of the inner wall of the rubber seat 1, and connecting steps 3 are provided at intervals below the sealing step 2.

Preferably, the bottom of the glue base 1 is connected to a negative pressure suction pipe 5; the upper part of the negative pressure suction pipe 5 is provided as a funnel-shaped outer pocket 51 that matches the outer wall of the bottom of the glue base 1.

Preferably, the outer pocket 51 is made of hard material, and a truncated cone-shaped rubber pad 52 is provided between the bottom of the rubber seat 1 of the outer pocket 51; both the rubber pad 52 and the rubber seat 1 can be made of soft silicone.

Preferably, an extension part 4 is provided at the lower opening end of the rubber seat 1; the extension part 4 extends into the outer pocket 51.

Preferably, the mesh number of the upper mesh layer 81 is greater than the mesh number of the lower mesh layer 82; the mesh number of the lower mesh layer 82 is 20-40 mesh; the mesh number of the upper mesh layer 81 is between 80-150 Head.

Preferably, the lower mesh layer 82 is made of staggered steel wires with a wire diameter of 0.5-0.8 mm.

Preferably, the connecting step 3 protrudes inwardly from the edge by 830.5-1 mm.

Preferably, the sealing step 2 is 2-3 mm away from the edge of the opening on the rubber base 1 .

Preferably, the rubber seat 1 is a rotary body.

The method for making any of the above-mentioned sealant seats with a negative pressure support platform includes the following steps:

A. Material preparation, make the rubber seats separately, which can be molded; support the platform, first press the mesh layer 81 and the lower mesh layer 82 to eliminate gaps, and then perform edge wrapping processing; that's it;

B. Assembling, use the softness of the rubber seat to insert the support platform under the connecting step in the rubber seat;

C. Glue sealing: Adhesive will be used to fill the connection between the support platform and the connecting step to make it bond and seal;

D. Drying, put the rubber base processed in step C into the drying device at a temperature of 50-70°C and a time of 5-20 minutes.

Preferably, the adhesive is flowable silicone or silicone adhesive.

Preferably, in step C, a syringe is used to slowly spray the adhesive downward along the edge of the connecting step, and through the mesh of the support platform, the connecting step 3 is sealed with the inner wall, and the adhesive forms the adhesive part as shown in Figure 1 80.

Preferably, when drying, dry at a temperature of 55°C for 10 minutes.

In specific use, as shown in Figure 2, a notch for installing the assembly support platform 8 is formed between the connecting step 3 and the inner wall slope of the lower opening, so that after the microporous filter membrane cup is inserted into the glue seat 1, it is supported on the support platform 8. The connecting step 3 blocks the bottom of the microporous filter membrane cup 9; the sealing step 2 blocks the middle part to achieve a double-layer sealing effect to prevent the upper part from overflowing; and the outer pocket 51 is made of hard material, and the bottom of the rubber seat 1 of the outer pocket 51 is There are truncated cone-shaped rubber pads 52 between them to reduce the deformation caused by negative pressure suction, prevent liquid leakage from the lower part, and further improve the sealing effect.

It should be noted that, as used herein, the terms "include", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or equipment.

This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only used to help understand the method and the core idea of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that due to the limitations of written expressions, there are objectively unlimited specific structures. For those of ordinary skill in the art, without departing from the principles of the present invention, Below, several improvements, modifications or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, modifications or combinations, or the concepts and technical solutions of the invention can be directly applied to other situations without improvement. , should be regarded as the protection scope of the present invention.

Claims (10)

1. A sealant seat with a negative pressure support platform, characterized in that it includes a rubber seat (1), the rubber seat (1) has upper and lower openings, and the upper end opening is larger than the lower end opening; the rubber seat (1) ) The lower opening is funnel-shaped with a gradient from large to small; the outer surface of the upper part of the rubber seat (1) is provided with a slot (13) for installing a pressure plate that compresses the rubber seat (1); the rubber seat (1) ) A sealing step (2) is provided on the upper part of the inner wall, and connecting steps (3) are provided at intervals below the sealing step (2); a support platform (8) is provided between the lower part of the connecting step (3) and the bottom of the bottom, so The support platform (8) includes an upper mesh layer (81) and a lower mesh layer (82) that are closely attached to each other, and an edge covering the outer edges of the mesh layer (81) and the lower mesh layer (82). (83). 2. A sealant seat with a negative pressure support platform according to claim 1, characterized in that the bottom of the rubber seat (1) is connected to a negative pressure suction pipe (5); The upper part of the tube (5) is configured as a funnel-shaped outer pocket (51) that matches the outer wall of the bottom of the rubber seat (1). 3. A sealant seat with a negative pressure support platform according to claim 2, characterized in that the outer pocket (51) is made of hard material, and the outer pocket (51) and the rubber seat (1) A truncated cone-shaped rubber pad (52) is arranged between the bottoms. 4. A sealant seat with a negative pressure support platform according to claim 2, characterized in that an extension part (4) is provided at the lower opening end of the rubber seat (1); the extension part (4) ) extends into the outer pocket (51). 5. A sealant seat with a negative pressure support platform according to claim 1, characterized in that the mesh number of the upper mesh layer (81) is greater than the mesh number of the lower mesh layer (82); The mesh number of the lower mesh layer (82) is 20-40 mesh; the mesh number of the mesh layer (81) is 80-150 mesh. 6. A sealant seat with a negative pressure support platform according to claim 1, characterized in that the lower mesh layer (82) is made of staggered steel wires with a wire diameter of 0.5-0.8 mm. 7. A sealant seat with a negative pressure support platform according to claim 1, characterized in that the connecting step (3) protrudes inwardly from the edge (83) by 0.5-1 mm. 8. The manufacturing method of a sealant seat with a negative pressure support platform according to any one of claims 1 to 7, characterized in that it includes the following steps: A. Prepare materials and make rubber base (1) and support platform (8) respectively. B. Assembling, use the softness of the rubber seat to insert the support platform (8) under the connecting step (3) in the rubber seat (1); C. Glue sealing: Adhesive will be used to fill the connection between the support platform (8) and the connecting step (3) to make it bond and seal; D. Drying, put the rubber seat (1) processed in step C into the drying device at a temperature of 50-70°C and a time of 5-20 minutes. 9. The manufacturing method of a sealant seat with a negative pressure support platform according to claim 8, characterized in that the adhesive is flowing silicone (20-25°C) or silicone adhesive. 10. The manufacturing method of a sealant seat with a negative pressure support platform according to claim 8, characterized in that in step C, a syringe is used to slowly spray the adhesive downward along the edge of the connecting step (3). out, through the mesh of the support platform (8), seal the connecting step (3) on the inner wall.