A pneumatic device for batch extraction of liquid from collection bags and its control method

Abstract

The present invention discloses a pneumatic device for batch extraction of liquid from a collection bag and a control method thereof. The device comprises a syringe, a lower card plate, an integrated silicone cavity plate, an upper card plate, and a collection bag with a flexible connector connected to the end thereof; the integrated silicone cavity plate is sandwiched between the lower card plate and the upper card plate, and a plurality of syringes are mounted on the bottom of the lower card plate in an array manner. The upper end of the integrated silicone cavity plate passes through the lower card plate and extends into the integrated silicone cavity plate. The collection bag is suspended via a flexible connector, and the collection bag passes through the upper card plate and is loaded into the integrated silicone cavity plate. The syringe punctures the collection bag in the integrated silicone cavity plate. The present invention utilizes pneumatics to achieve batch extrusion and extraction of liquid from a collection bag without a mechanical transmission mechanism, greatly shortening the time for extracting saliva samples in animal husbandry quarantine. The device is simple to operate, easy to install, low in production cost, and environmentally friendly.

Description

Technical Field

[0001] The invention relates to a liquid extraction device in the field of animal husbandry quarantine, and in particular to a pneumatic device for batch extracting liquid from a collection bag and a control method thereof. Background Art

[0002] As the world's largest pork producer and consumer, my country's pork production has long accounted for over 60% of total meat production, firmly ranking first globally. China's annual pig output accounts for over half of the world's total (approximately 700 million head from 2015 to 2018). However, in recent years, epidemic swine diseases such as classical swine fever, blue ear disease, and porcine circovirus have had a significant impact on the pig farming industry. Take African swine fever (ASF), for example. This is an acute, virulent, and highly contagious disease caused by the African swine fever virus (ASF) that infects domestic pigs and various wild boars. Once infected, it carries a mortality rate of up to 100%, making it one of the most severe epidemic diseases.

[0003] Since there is currently no effective vaccine or preventive medication, reliable, rapid, and early diagnosis is fundamental and crucial for the prevention and control of African swine fever. Laboratory detection methods for African swine fever primarily include serological and etiological methods. Under natural infection conditions, the incubation period for ASF is 3-19 days, with virus shedding beginning 3-4 days after infection and antibodies produced in the serum 7-9 days after infection. In comparison, etiological detection techniques are more suitable for early diagnosis. The most widely used etiological method is nucleic acid detection based on the polymerase chain reaction (PCR). Existing detection methods rely on manual sampling (usually venous blood). If testers encounter infected pigs during the sampling process, this can lead to contamination and the spread of the virus. Studies have shown that saliva can detect the pathogen 3-19 days earlier than blood, without any damage to the body or stress response in pigs. This facilitates screening during the window period, seizing the golden period for prevention and control.

[0004] In summary, while existing epidemic disease detection methods can achieve their goals, they often rely on manual blood collection for invasive testing, which places high demands on operators, and is subject to viral contamination and low efficiency. Therefore, a method that can address these issues is needed in the field. By combining the advantages of saliva testing (non-invasive, easy to collect, and highly sensitive for early screening), a sample collection system could be designed to better address epidemic disease detection. Summary of the Invention

[0005] In order to solve the problems existing in the background technology, the present invention is aimed at the liquid extraction technology in the field of animal husbandry quarantine, and provides a pneumatic device and a control method for batch extraction of liquid in a collection bag, which realizes batch extrusion and extraction of bagged liquid without a mechanical transmission mechanism, greatly shortens the processing time, and has simple operation, reliable structure, easy installation and low production cost.

[0006] To achieve the above objectives, the technical solutions adopted by the present invention mainly include:

[0007] The present invention includes a syringe, a lower card plate, an integrated silicone cavity plate, an upper card plate, and a collection bag with a flexible connector connected to the end; the integrated silicone cavity plate is clamped between the lower card plate and the upper card plate, and multiple syringes are installed in an array at the bottom of the lower card plate. The upper end of the integrated silicone cavity plate passes through the lower card plate and extends into the integrated silicone cavity plate. The collection bag is suspended via the flexible connector and is loaded into the integrated silicone cavity plate through the upper card plate.

[0008] The lower card plate is provided with through holes arranged in an array, the integrated silicone cavity plate is provided with cavities arranged in the same array as the countersunk holes on the lower card plate, and the upper card plate is provided with opening and closing grooves arranged in the same array as the through holes on the lower card plate; each syringe is installed at the lower end of each through hole of the lower card plate in an array manner, and each collection bag passes through an opening and closing groove on its corresponding upper card plate and extends into each cavity provided on the integrated silicone cavity plate, and the upper end of the syringe needle passes through the through hole of the lower card plate and extends into the cavity of the integrated silicone cavity plate to puncture the collection bag.

[0009] The inside of the integrated silica gel cavity plate is hollow for filling with air and is connected to an external air source and an air pump.

[0010] The integrated silica gel cavity plate is made of silica gel.

[0011] The flexible connector adopts a spring-like structure.

[0012] The opening and closing groove of the upper clamping plate comprises two valve parts which can be rotatably opened and closed.

[0013] 2. A control method for a pneumatic device for batch extraction of liquid from a collection bag:

[0014] Initially, the upper end of the syringe needle passes through the through hole of the lower card plate and extends into the cavity of the integrated silicone cavity plate. Then, several collection bags pass through the opening and closing groove of the upper card plate under the suspension of the flexible connector and descend into the cavity of the integrated silicone cavity plate. Then, gas is flushed into the integrated silicone cavity plate, causing the cavity of the integrated silicone cavity plate to deform and swell, squeezing several collection bags. During the squeezing process, the collection bags are punctured by the syringe needle, and the liquid in each collection bag flows into the syringe through the needle at the same time.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention realizes batch extrusion and extraction of bagged liquids without a mechanical transmission mechanism. It is based on a pneumatic drive mode and has no mechanical transmission mechanism. It is simple to operate, easy to install, and has a low failure rate. It reduces labor intensity while greatly reducing instrument costs.

[0017] 2. The present invention can realize the synchronous squeezing of multiple bait bags within 1 minute, greatly shortening the operation time and improving the detection efficiency.

[0018] 3. The present invention can use syringes with adjustable specifications, which can be selected according to the bait bag used by the operator, thereby improving the universality of the device and improving the detection accuracy.

[0019] 4. The lower card plate, the integrated silicone cavity plate and the upper card plate of the present invention are directly fixed in a shape-complementary manner, which effectively reduces the wear on the silicone and extends the service life of the device while ensuring the stability of the device.

[0020] 5. The device of the present invention can be reused after cleaning and disinfection, which reduces equipment costs and has the advantage of being environmentally friendly.

[0021] The present invention utilizes pneumatics to realize batch squeezing and extraction of liquid in a collection bag without a mechanical transmission mechanism, greatly shortening the saliva sample extraction time in animal husbandry quarantine. It is simple to operate, easy to install, low in production cost, and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional isometric schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of a syringe of the present invention.

[0024] Figure 3 It is a schematic diagram of a lower card plate of the present invention.

[0025] Figure 4 It is a schematic diagram of the integrated silica gel cavity plate of the present invention.

[0026] Figure 5 It is a schematic diagram of an upper card board of the present invention.

[0027] Figure 6 Schematic diagram of a collection package of the present invention with a flexible connector connected to the end.

[0028] Figure 7 It is a schematic diagram of the process of batch extraction of liquid in the collection package of the present invention.

[0029] In the figure: syringe 0, lower card plate 1, integrated silicone cavity plate 2, upper card plate 3, and collection bag 4 with a flexible connector connected to the end. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.

[0031] like Figure 1 As shown, the device includes a syringe 0, a lower card plate 1, an integrated silicone cavity plate 2, an upper card plate 3, and a collection bag 4 with a flexible connector connected to the end; the integrated silicone cavity plate 2 is clamped between the lower card plate 1 and the upper card plate 3, and multiple syringes 0 are installed in an array at the bottom of the lower card plate 1. The upper end of the integrated silicone cavity plate 2 passes through the lower card plate 1 and extends into the integrated silicone cavity plate 2, as shown in FIG. Figure 6 As shown, the collection bag 4 is suspended by a flexible connector, and the collection bag 4 passes through the upper card plate 3 and is loaded into the integrated silicone cavity plate 2 . The syringe 0 is used to puncture the collection bag 4 in the integrated silicone cavity plate 2 .

[0032] like Figure 3 As shown, the lower card plate 1 is provided with through holes arranged in an array for the syringe 0 needle tube to pass through, as shown in FIG. Figure 4 As shown, the integrated silicone cavity plate 2 has cavities arranged in the same array as the countersunk holes on the lower card plate 1, and the upper card plate 3 has opening and closing slots arranged in the same array as the through holes on the lower card plate 1; each syringe 0 is installed in an array at the lower end of each through hole on the lower card plate 1, and each collection bag 4 passes through an opening and closing slot on the corresponding upper card plate 3 and then extends into each cavity opened on the integrated silicone cavity plate 2. Figure 2 As shown, the syringe 0 has a needle tube. The upper end of the needle tube of the syringe 0 passes through the through hole of the lower card plate 1 and then extends into the cavity of the integrated silicone cavity plate 2 to pierce the collection bag 4 to collect the liquid in the collection bag 4.

[0033] The inside of the integrated silica gel cavity plate 2 is hollow for filling air and connected to an external air source and an air pump. Specifically, the integrated silica gel cavity plate 2 is connected to the external air source and the air pump via an air inlet and outlet valve.

[0034] In a specific implementation, the integrated silica gel cavity plate 2 is made of silica gel, and the flexible connector adopts a spring-like structure.

[0035] like Figure 5 As shown, the opening and closing groove of the upper clamping plate 3 includes two valve members that can be rotatably opened and closed.

[0036] Initially, the upper end of the needle of syringe 0 passes through the through hole of the lower card plate 1 and extends into the cavity of the integrated silicone cavity plate 2. Then, several array-arranged collection bags 4 pass through the opening and closing groove of the upper card plate 3 under the suspension of the flexible connector and descend into the cavity of the integrated silicone cavity plate 2. Then, by controlling the switch of the inlet and outlet air valves of the integrated silicone cavity plate 2, gas is flushed into the inside of the integrated silicone cavity plate 2, causing the cavity of the integrated silicone cavity plate 2 to deform and swell, and several collection bags 4 are squeezed in batches at the same time. During the squeezing process, the collection bags 4 are punctured by the needle of syringe 0, and the liquid in each collection bag 4 flows into the syringe 0 through the needle at the same time, thereby realizing batch extraction of the liquid in several collection bags 4.

[0037] In the specific implementation, the syringe 0 is installed in the countersunk hole of the lower card plate 1 in an array of three rows and six columns. The lower card plate 1 and the upper card plate 3 sandwich the integrated silicone cavity plate in the middle. The collection bag 4 with a flexible connector connected to the end is also installed in the through hole on the silicone cavity plate 2 through the one-way hinge of the upper card plate 3 in an array of three rows and six columns, and is punctured by the needle of the syringe 0 during the installation process.

[0038] The specific implementation process of the present invention is as follows:

[0039] Step 1: Prepare several collection bags 4 with flexible connectors connected to their ends.

[0040] Step 2: Place the collection bag 4 through the one-way hinge of the upper card plate 3 in an array of three rows and six columns, and install it in the through hole on the silicone cavity plate 2.

[0041] Step 3: Fix the lower card plate 1 on the silicone cavity plate 2 in a complementary manner.

[0042] Step 4: Install the syringe 0 in the countersunk hole of the lower card plate 1 in an array of three rows and six columns. This process requires the needle of the syringe 0 to pierce the collection bag 4.

[0043] Step 5: By controlling the switches of the inlet and outlet valves on the integrated silica gel cavity plate 2, fill the cavity with gas, such as Figure 7 As shown, the plate is deformed to squeeze the collection bag 4 in batches, and the liquid in the bag flows into the syringe 0 through the needle tube, thereby realizing batch extraction of the liquid in the collection bag 4.

[0044] The above specific implementation methods are used to explain the present invention rather than to limit the present invention. Any modification and revision of the present invention within the spirit of the present invention and the protection scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A pneumatic device for batch extraction of liquid from a collection bag, characterized by: The invention comprises a syringe (0), a lower card plate (1), an integrated silicone cavity plate (2), an upper card plate (3), and a collection bag (4) whose end is connected to a flexible connector; the integrated silicone cavity plate (2) is sandwiched between the lower card plate (1) and the upper card plate (3); a plurality of syringes (0) are mounted on the bottom of the lower card plate (1) in an array manner; the upper ends of the syringes (0) pass through the lower card plate (1) and extend into the integrated silicone cavity plate (2); the collection bag (4) is suspended and arranged via the flexible connector; the collection bag (4) passes through the upper card plate (3) and is loaded into the integrated silicone cavity plate (2); The lower card plate (1) is provided with through holes arranged in an array, the integrated silicone cavity plate (2) is provided with cavities arranged in the same array as the through holes on the lower card plate (1), and the upper card plate (3) is provided with opening and closing grooves arranged in the same array as the through holes on the lower card plate (1); each syringe (0) is mounted at the lower end of each through hole of the lower card plate (1) in an array manner, and each collection bag (4) passes through an opening and closing groove on the corresponding upper card plate (3) and then extends into each cavity provided on the integrated silicone cavity plate (2); the upper end of the syringe (0) needle tube passes through the through hole of the lower card plate (1) and then extends into the cavity of the integrated silicone cavity plate (2) to puncture the collection bag (4); The inside of the integrated silica gel cavity plate (2) is hollow for filling with air and is connected to an external air source and an air pump.

2. A pneumatic device for batch extraction of liquid from a collection bag according to claim 1, characterized in that: The integrated silica gel cavity plate (2) is made of silica gel.

3. The pneumatic device for batch extraction of liquid from a collection bag according to claim 1, characterized in that: The flexible connector adopts a spring structure.

4. The pneumatic device for batch extraction of liquid from a collection bag according to claim 1, characterized in that: The opening and closing groove of the upper clamping plate (3) comprises two valve parts that are arranged to rotate and open.

5. A method for controlling a pneumatic device for batch extraction of liquid from a collection bag, applied to the device of any one of claims 1 to 4, characterized in that: Initially, the upper end of the needle tube of the syringe (0) passes through the through hole of the lower card plate (1) and extends into the cavity of the integrated silicone cavity plate (2). Then, several collection bags (4) are suspended by a flexible connector and pass through the opening and closing groove of the upper card plate (3) and then descend into the cavity of the integrated silicone cavity plate (2). Then, gas is injected into the integrated silicone cavity plate (2), causing the cavity of the integrated silicone cavity plate (2) to deform and swell, thereby squeezing the several collection bags (4). During the squeezing process, the collection bags (4) are punctured by the needle tube of the syringe (0), and the liquid in each collection bag (4) flows into the syringe (0) through the needle tube at the same time.

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