An integrated filtration device for laboratory use

Abstract

The application relates to a laboratory integrated filtering device, characterized in that the device comprises a supporting base, a water storage cup body, a filtering cup body, a flow guide connecting pipe assembly, a filter membrane and a connecting sleeve, five flow guide connecting pipe assemblies are arranged on the top of the supporting base, the five flow guide connecting pipe assemblies are vertically fixed on the top of the supporting base and arranged in a linear shape, a guide groove is arranged in the bottom of the supporting base below the five flow guide connecting pipe assemblies, the upper end of the connecting sleeve is connected in the guide groove through a first spring, the lower end of the flow guide connecting pipe assembly enters the guide groove below the flow guide connecting pipe assembly and extends into the upper end of the connecting sleeve, and the lower end of the connecting sleeve is sleeved on the upper end of the water storage cup body under the action of the first spring. The five flow guide connecting pipe assemblies are arranged on the supporting base, and the design can complete the filtration of five samples at the same time, so that the work efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of membrane filtration technology, and more specifically to an integrated filtration device for laboratory use. Background Technology

[0002] When testing water quality in the laboratory, filtration is required. The commonly used filtration device is the membrane filter. Since comparative tests are often required during water quality testing, existing membrane filters can only filter one sample at a time. Therefore, the laboratory either needs to use multiple sets of membrane filters with multiple vacuum pumps to filter at the same time, which greatly increases the cost, or it needs to use a set of membrane filters for repeated cleaning and filtration, which is very time-consuming and labor-intensive. In addition, the water filtered by this membrane filter is often directly discharged, which causes great waste of resources. Therefore, it is particularly important to design an integrated filtration device for laboratory use to solve the above problems. Summary of the Invention

[0003] To address the aforementioned problems, this invention presents an integrated laboratory filtration device with five flow-guiding pipe assemblies mounted on a support base. This design allows for the simultaneous filtration of five samples, significantly improving work efficiency.

[0004] To solve the above-mentioned technical problems, the present invention provides an integrated laboratory filtration device, characterized in that it includes a support base, a water storage cup, a filter cup, a flow guiding connecting pipe assembly, a filter membrane, and a connecting sleeve. The support base is horizontally placed, and its left and right ends are each connected to a support leg through a height adjustment mechanism. Five flow guiding connecting pipe assemblies are provided on the top of the support base, and the five flow guiding connecting pipe assemblies are vertically fixed to the top of the support base and arranged in a straight line. A guide groove is opened at the bottom of the support base directly below the five flow guiding connecting pipe assemblies. The upper end of the connecting sleeve is connected to a first... A spring is connected in the guide groove. The lower end of the flow-guiding connecting pipe assembly enters the guide groove directly below it and extends into the upper end of the connecting sleeve. The lower end of the connecting sleeve is sleeved and connected to the upper end of the water storage cup under the action of the first spring. The connecting sleeve is detachably connected to the upper end of the water storage cup. The upper and lower ends of the filter cup are open. Its lower end is detachably connected to the upper end of the flow-guiding connecting pipe assembly through a clamp. The filter membrane is placed between the lower end of the filter cup and the upper end of the flow-guiding connecting pipe assembly. The filter membrane is clamped and fixed by the lower end of the filter cup and the upper end of the flow-guiding connecting pipe assembly.

[0005] Furthermore: the flow guiding connecting pipe assembly is composed of a filter element, a flow guiding pipe, and a connecting pipe connected together from top to bottom. The filter membrane is placed on top of the filter element and is clamped and fixed between the lower end of the filter cup and the filter element by a clamp. The connecting pipe is vertically fixed to the upper end of the support base and its lower end extends into the upper end of the connecting sleeve. A first sealing ring is installed on the inner wall of the upper end of the connecting sleeve. The connecting sleeve is sealed to the outer wall of the connecting pipe through the first sealing ring and can slide up and down along the connecting pipe.

[0006] Furthermore, a valve structure is installed inside the connecting pipe above the support base, and the valve structure is controlled by a knob installed on the outer wall of the connecting pipe.

[0007] Furthermore, a second sealing ring is provided inside the lower end of the connecting sleeve. The connecting sleeve is sealed to the outer wall of the upper end of the water storage cup through the second sealing ring and can slide up and down along the upper end of the water storage cup.

[0008] Furthermore: a vacuum pump connection terminal and a pressure protection valve are provided on the outer wall of the support base. Both the vacuum pump connection terminal and the pressure protection valve are connected to the air extraction channel opened in the support base. A guide channel connected to the air extraction channel is opened on the side wall of the guide groove. Two annular protrusions are provided on the outer wall of the connecting sleeve extending into the guide groove. The two annular protrusions are arranged one above the other. A third sealing ring is fitted on the outer wall of the upper annular protrusion, and a third sealing ring is fitted on the outer wall of the lower annular protrusion.

[0009] The set includes a fourth sealing ring. The inner wall of the guide groove matches the third and fourth sealing rings. Two annular protrusions contact the inner wall of the guide groove through the third and fourth sealing rings, respectively. The flow channel is sealed by the third and fourth sealing rings. A first through hole is provided on the side wall of the connecting sleeve between the two annular protrusions. When the connecting sleeve is fitted onto the upper end of the water storage cup, the first through hole is directly opposite the flow channel.

[0010] Furthermore: the pressure protection valve includes a first valve body, a second valve body, a valve core, and a second spring. One end of the first valve body is fixed to the outer wall of the support base and connected to the air extraction channel. The other end of the first valve body is fitted and fixed to the outer wall of the second valve body. One end of the second valve body extends into the first valve body and is provided with an air extraction hole. The other end of the second valve body is open. The valve core is connected to the second valve body through the second spring. There is a gap between the inner wall of the first valve body and the outer wall of the second valve body end extending into the first valve body. A second through hole is opened on the side wall of the second valve body inside the first valve body. The second through hole is connected to the gap and sealed by the valve core.

[0011] Furthermore, the valve core is provided with a push-pull rod integrated with it, and the end of the push-pull rod away from the valve core extends out of the open end of the second valve body.

[0012] Furthermore, the lower end of the filter cup is funnel-shaped, and its outer wall is marked with a height capacity indicator.

[0013] Furthermore: the height adjustment mechanism includes connecting plates, screws, and locking nuts located at the bottom of the left and right ends of the support base. The outer end faces of the two connecting plates are flush with the left and right ends of the support base. The inner outer wall of the support foot is attached to the outer wall of the connecting plate and the end of the support base. The screw is horizontally fixed on the outer wall of the connecting plate. The support foot has a through groove for the screw to pass through. The through groove is elongated and vertically arranged. The locking nut is connected to the screw passing through the support foot and contacts the outer outer wall of the support foot.

[0014] Furthermore, trapezoidal slide rails are vertically installed on both the left and right ends of the support base, and a groove matching the trapezoidal slide rail is provided on the inner outer wall of the support leg. The support leg is slidably connected to the trapezoidal slide rail through the groove.

[0015] With the above structure, the present invention has five flow-guiding connecting pipe assemblies on the support base. This design allows for the simultaneous filtration of five samples, greatly improving work efficiency. Furthermore, the present invention can collect the filtered water sample through the water storage cup, thus saving resources. In addition, the pressure protection valve in the present invention can protect itself in case the vacuum pump is accidentally turned on without the water storage cup being installed, preventing excessive internal and external pressure differences from damaging its own structure and the vacuum pump, thereby increasing its practicality. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the main structure of the present invention.

[0018] Figure 2 for Figure 1 A magnified view of A in the middle.

[0019] Figure 3 for Figure 1 A magnified view of B in the middle.

[0020] Figure 4 This is a diagram of the internal structure of a pressure protection valve. Detailed Implementation

[0021] like Figure 1 and Figure 2An integrated laboratory filtration device is shown, comprising a support base 1, a water storage cup 9, a filter cup 2, a flow guiding pipe assembly, a filter membrane, and a connecting sleeve 8. The support base is horizontally positioned, with its left and right ends each connected to a support leg 19 via a height adjustment mechanism. Five flow guiding pipe assemblies are mounted on the top of the support base, vertically fixed to the top of the support base and arranged in a straight line. A guide groove is provided at the bottom of the support base directly below each of the five flow guiding pipe assemblies. The upper end of the connecting sleeve is connected to the guide groove via a first spring 12. The lower end of the flow guiding pipe assembly enters the guide groove directly below it and extends into the upper end of the connecting sleeve. The lower end of the connecting sleeve, under the action of a first spring, is fitted and connected to the upper end of the water storage cup. The connecting sleeve and the upper end of the water storage cup are detachably connected. The upper and lower ends of the filter cup are open, and its lower end is detachably connected to the upper end of the flow guiding pipe assembly via clamp 7. The filter membrane is placed between the lower end of the filter cup and the upper end of the flow guiding pipe assembly, and the filter membrane is clamped and fixed by the lower end of the filter cup and the upper end of the flow guiding pipe assembly. This invention features five flow guiding pipe assemblies on the support base, allowing for the simultaneous filtration of five samples, greatly improving work efficiency. Furthermore, this invention allows for the collection of filtered water samples through the water storage cup, thus saving resources.

[0022] like Figure 1 The flow guiding connecting pipe assembly shown is composed of a filter element 3, a flow guiding pipe 4, and a connecting pipe 5 connected from top to bottom. The filter membrane is placed on top of the filter element and clamped and fixed between the lower end of the filter cup and the filter element. The connecting pipe is vertically fixed to the upper end of the support base, and its lower end extends into the upper end of the connecting sleeve. A first sealing ring 13 is installed on the inner wall of the upper end of the connecting sleeve. The connecting sleeve is sealed to the outer wall of the connecting pipe through the first sealing ring and can slide up and down along the connecting pipe. A valve structure is provided in the connecting pipe above the support base. The valve structure is controlled by a knob 6 located on the outer wall of the connecting pipe.

[0023] The lower end of the connecting sleeve is provided with a second sealing ring. The connecting sleeve is sealed to the outer wall of the upper end of the water storage cup through the second sealing ring and can slide up and down along the upper end of the water storage cup.

[0024] like Figure 1 and Figure 2The outer wall of the support base is provided with a vacuum pump connection end 10 and a pressure protection valve 11. Both the vacuum pump connection end and the pressure protection valve are connected to the air extraction channel opened in the support base. The side wall of the guide groove is provided with a flow guide channel 17 connected to the air extraction channel. The outer wall of the connecting sleeve extending into the guide groove is provided with two annular protrusions, which are arranged one above the other. The outer wall of the upper annular protrusion is fitted with a third sealing ring 14, and the outer wall of the lower annular protrusion is fitted with a fourth sealing ring 15. The inner wall of the guide groove matches the third and fourth sealing rings. The two annular protrusions contact the inner wall of the guide groove through the third and fourth sealing rings, respectively. The flow guide channel is sealed by the third and fourth sealing rings. The side wall of the connecting sleeve between the two annular protrusions is provided with a first through hole 16. When the connecting sleeve is fitted onto the upper end of the water storage cup, the first through hole is directly opposite the flow guide channel.

[0025] like Figure 4 The pressure protection valve shown includes a first valve body 11-1, a second valve body 11-2, a valve core 11-4, and a second spring 11-3. One end of the first valve body is fixed to the outer wall of the support base and connected to the air extraction channel. The other end of the first valve body is fitted and fixed to the outer wall of the second valve body. One end of the second valve body extends into the first valve body and is provided with an air extraction hole 11-6. The other end of the second valve body is open. The valve core is connected to the second valve body through the second spring. There is a gap between the inner wall of the first valve body and the outer wall of the second valve body that extends into the first valve body. A second through hole 11-7 is opened on the side wall of the second valve body inside the first valve body. The second through hole is connected to the gap and sealed by the valve core. A push-pull rod 11-5 is provided on the valve core and is integrated with it. The end of the push-pull rod away from the valve core extends out from the open end of the second valve body to its outside. The invention features a pressure protection valve that protects the vacuum pump from accidental activation without a water reservoir being installed. This prevents excessive internal and external pressure differences from damaging the pump's structure and enhancing its practicality.

[0026] like Figure 1 The lower end of the filter cup shown is funnel-shaped, and its outer wall has a height capacity marking.

[0027] like Figure 1 and Figure 3The height adjustment mechanism shown includes connecting plates 20, screws 21, and locking nuts 22 located at the bottom of the left and right ends of the support base. The outer end faces of the two connecting plates are flush with the left and right ends of the support base. The inner outer wall of the support leg is attached to the outer wall of the connecting plates and the end of the support base. The screw is horizontally fixed to the outer wall of the connecting plates. The support leg has a through groove for the screw to pass through. The through groove is elongated and vertically arranged. The locking nut is connected to the screw passing through the support leg and contacts the outer outer wall of the support leg. Trapezoidal slide rails 18 are also vertically arranged on the left and right ends of the support base. The inner outer wall of the support leg has a sliding groove that matches the trapezoidal slide rail. The support leg is slidably connected to the trapezoidal slide rail through the sliding groove. When not in use, the height of the support base can be adjusted to change the footprint, which facilitates storage.

[0028] During operation, the filter membrane is placed on the filter element and the filter cup is fixed to the filter element with clamps, clamping the filter membrane. Then, the water storage cup is connected to the connecting sleeve, connecting the guide channel to the first through hole. Next, the vacuum pump is connected to the vacuum pump connector, water sample is poured into the filter cup, and the vacuum pump is turned on. Under the action of the internal and external pressure difference, the filter membrane filters the water sample. This invention can filter five water samples simultaneously with one vacuum pump, greatly improving work efficiency, saving costs, and increasing practicality.

[0029] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. An integrated filtration device for laboratory use, characterized in that: The system includes a support base (1), a water storage cup (9), a filter cup (2), a flow guide pipe assembly, a filter membrane, and a connecting sleeve (8). The support base is horizontally positioned, and its left and right ends are each connected to a support foot (19) via a height adjustment mechanism. Five flow guide pipe assemblies are provided on the top of the support base. The five flow guide pipe assemblies are vertically fixed to the top of the support base and arranged in a straight line. A guide groove is provided at the bottom of the support base directly below the five flow guide pipe assemblies. The upper end of the connecting sleeve is connected to the guide groove via a first spring (12). The lower end of the flow guiding pipe assembly enters the guide groove directly below it and extends into the upper end of the connecting sleeve. The lower end of the connecting sleeve is sleeved and connected to the upper end of the water storage cup under the action of the first spring. The connecting sleeve is detachably connected to the upper end of the water storage cup. The upper and lower ends of the filter cup are open. Its lower end is detachably connected to the upper end of the flow guiding pipe assembly through a clamp (7). The filter membrane is placed between the lower end of the filter cup and the upper end of the flow guiding pipe assembly. The filter membrane is clamped and fixed by the lower end of the filter cup and the upper end of the flow guiding pipe assembly. The outer wall of the support base is provided with a vacuum pump connection end (10) and a pressure protection valve (11). The vacuum pump connection end and the pressure protection valve are connected to the air extraction channel opened in the support base. The side wall of the guide groove is provided with a flow guide channel (17) connected to the air extraction channel. The outer wall of the connecting sleeve extending into the guide groove is provided with two annular protrusions. The two annular protrusions are arranged one above the other. The outer wall of the upper annular protrusion is fitted with a third sealing ring (14), and the outer wall of the lower annular protrusion is fitted with a fourth sealing ring (15). The inner wall of the guide groove matches the third sealing ring and the fourth sealing ring. The two annular protrusions contact the inner wall of the guide groove through the third sealing ring and the fourth sealing ring, respectively. The flow guide channel is sealed by the third sealing ring and the fourth sealing ring. The side wall of the connecting sleeve between the two annular protrusions is provided with a first through hole (16). When the connecting sleeve is fitted onto the upper end of the water storage cup, the first through hole is facing the flow guide channel.

2. The integrated laboratory filtration device according to claim 1, characterized in that: The flow guiding connecting pipe assembly is composed of a filter element (3), a flow guiding pipe (4), and a connecting pipe (5) connected from top to bottom. The filter membrane is placed on top of the filter element and is clamped and fixed between the lower end of the filter cup and the filter element by a clamp. The connecting pipe is vertically fixed on the upper end of the support base and its lower end extends into the upper end of the connecting sleeve. A first sealing rubber ring (13) is installed on the inner wall of the upper end of the connecting sleeve. The connecting sleeve is sealed to the outer wall of the connecting pipe through the first sealing rubber ring and can slide up and down along the connecting pipe.

3. The integrated laboratory filtration device according to claim 2, characterized in that: A valve structure is installed inside the connecting pipe above the support base. The valve structure is controlled by a knob (6) installed on the outer wall of the connecting pipe.

4. An integrated laboratory filtration device according to any one of claims 1 or 2, characterized in that: The lower end of the connecting sleeve is provided with a second sealing ring. The connecting sleeve is sealed to the outer wall of the upper end of the water storage cup through the second sealing ring and can slide up and down along the upper end of the water storage cup.

5. The integrated laboratory filtration device according to claim 1, characterized in that: The pressure protection valve includes a first valve body (11-1), a second valve body (11-2), a valve core (11-4), and a second spring (11-3). One end of the first valve body is fixed to the outer wall of the support base and connected to the air extraction channel. The other end of the first valve body is fitted and fixed to the outer wall of the second valve body. One end of the second valve body extends into the first valve body and is provided with an air extraction hole (11-6). The other end of the second valve body is open. The valve core is connected to the second valve body through the second spring. There is a gap between the inner wall of the first valve body and the outer wall of the second valve body extending into the first valve body. A second through hole (11-7) is provided on the side wall of the second valve body inside the first valve body. The second through hole is connected to the gap and sealed by the valve core.

6. The integrated laboratory filtration device according to claim 5, characterized in that: The valve core is provided with a push-pull rod (11-5) integrated with it, and the end of the push-pull rod away from the valve core extends out of the open end of the second valve body.

7. The integrated laboratory filtration device according to claim 1, characterized in that: The lower end of the filter cup is funnel-shaped, and its outer wall is marked with a height capacity indicator.

8. The integrated laboratory filtration device according to claim 1, characterized in that: The height adjustment mechanism includes connecting plates (20), screws (21), and locking nuts (22) located at the bottom of the left and right ends of the support base. The outer end faces of the two connecting plates are flush with the left and right ends of the support base. The inner outer wall of the support foot is attached to the outer wall of the connecting plate and the end of the support base. The screw is horizontally fixed on the outer wall of the connecting plate. The support foot has a through groove for the screw to pass through. The through groove is long and vertical. The locking nut is connected to the screw passing through the support foot and contacts the outer outer wall of the support foot.

9. An integrated laboratory filtration device according to claim 8, characterized in that: Trapezoidal slide rails (18) are vertically arranged on both the left and right ends of the support base. A groove matching the trapezoidal slide rail is opened on the inner outer wall of the support foot. The support foot is slidably connected to the trapezoidal slide rail through the groove.

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