CN207694387U - A kind of continous way syringe membrane filtration device - Google Patents

Abstract

A continuous syringe membrane filtration device, the sampling hose (1), the water inlet a (11) of the sampling check valve (2), the water outlet a (11) of the sampling check valve (2) 12), the water inlet b(13) of the three-way pipe (3), the water outlet b(14) of the three-way pipe (3), and the water inlet c(9) of the sample outlet check valve (4) are connected in sequence, and the The method is adhesive bonding, and the flow direction of the sample inlet check valve (2) and the sample outlet check valve (4) is the direction from the sample inlet hose (1) to the sample outlet check valve (4); Insert the filter head d(7) of the replaceable syringe filter head (5) into the water outlet c(10) of the valve (4), insert the syringe (6) into the syringe socket of the three-way pipe (3) ( 15), the injection and filtration of the sample is realized by pumping the plunger of the syringe (6). The utility model avoids the operation of frequently inserting and pulling out the filter head during the suction filtration of the traditional syringe suction filtration device, and truly realizes the rapid filtration of samples.

Description

A continuous syringe filter membrane filtration device

technical field

The utility model belongs to the field of environmental science, and relates to a continuous syringe membrane filtration device, which can realize continuous and rapid filtration of environmental samples.

Background technique

In environmental chemical experiments, in order to eliminate the interference of other factors, it is often necessary to filter the environmental samples. At present, the more common filtering device is a syringe filter, and the usual operation method is to inhale the sample to be filtered in the syringe. , and then install the filter head on the syringe head, press the plunger of the syringe by hand, filter the sample through the filter and collect it in the container. Then remove the filter head and repeat the previous steps again. Due to the small volume of the syringe, when filtering a large amount of samples, it is necessary to insert and pull out the filter head several times to draw the samples for filtration, which is cumbersome and time-consuming.

Contents of the invention

In order to solve the above problems, the utility model provides a continuous syringe filter device for filtering samples efficiently and time-savingly without removing the filter head.

According to accompanying drawing, illustrate as follows, the present invention adopts following technical scheme to realize:

A continuous syringe membrane filtration device, characterized in that, the sampling hose 1, the water inlet a11 of the sampling one-way valve 2, the water outlet a12 of the sampling one-way valve 2, and the three-way pipe 3 The water inlet b13, the water outlet b14 of the three-way pipe 3, and the water inlet c9 of the sample outlet check valve 4 are connected in sequence, and the connection method is adhesive bonding. The flow directions of the sample inlet check valve 2 and the sample outlet check valve 4 are both Flow from the sample injection hose 1 to the direction of the sample discharge check valve 4; the outlet c10 of the sample discharge check valve 4 is inserted into the replaceable membrane filter head 5 and the water inlet d7 is tightly combined, and the syringe 6 is inserted into the tee pipe 3 The syringe socket 15 is tightly combined, and the injection and filtration of the sample are realized by pumping the piston of the syringe 6 .

The beneficial effects of the utility model are:

1. The utility model adds a one-way valve device. When filtering environmental samples, the one-way valve is used to control the fluid flow direction, which saves the operation of inserting and pulling out the filter head and realizes rapid filtration of samples.

2. The utility model adds a sample injection hose device, which can more conveniently carry out the sample extraction operation.

3. The utility model has simple structure and strong practicability, and is suitable for filtering batch samples in laboratories.

Description of drawings:

Fig. 1 is the relative position figure of the utility model;

Fig. 2 is a schematic diagram of a syringe filter head;

Fig. 3 is a schematic diagram of a sample outlet check valve 4;

Fig. 4 is a schematic diagram of the sampling check valve 2;

Figure 5 is a schematic diagram of a three-way pipe.

Among them: 1. Sampling hose, 2. Sampling one-way valve, 3. Tee pipe, 4. Sampling one-way valve, 5. Syringe filter, 6. Syringe, 7. Syringe filter5 Water inlet d, 8. Syringe filter head 5 water outlet d, 9. One-way valve 4 water inlet c, 10 One-way valve 4 water outlet c, 11. One-way valve 2 water inlet a, 12. One-way valve 2 Water outlet a, 13. Tee pipe water inlet b, 14. Tee pipe water outlet b, 15. Syringe socket.

Detailed ways:

The present invention is described in detail below in conjunction with accompanying drawing:

A continuous syringe filter membrane filtration device, as shown in Figure 1. The device is mainly composed of a sampling hose 1 , a sampling one-way valve 2 , a three-way pipe 3 , a sampling one-way valve 4 , a membrane filter head 5 and a syringe 6 .

When installing, firstly, insert the sampling hose 1 directly into the water inlet a11 of the sampling one-way valve 2, then connect the water outlet a12 of the sampling one-way valve 2, the water inlet b13 of the tee pipe 3, and the water outlet b14 of the tee pipe 3 It is sequentially connected with the water inlet c9 of the sample outlet check valve 4, so that the flow direction of the sample inlet check valve 2 and the sample outlet check valve 4 is the direction from the sample inlet hose 1 to the sample outlet check valve 4, thereby realizing Unidirectional flow during sample filtration. The connection mode of the sampling hose 1, the sampling one-way valve 2, the sampling one-way valve 4, and the three-way pipe 3 is glued. Then insert the water outlet c10 of the one-way valve 4 into the water inlet d7 of the replaceable syringe filter head 5, and finally insert the syringe 6 into the syringe socket 15 of the three-way pipe 3, and ensure that the insertion parts are tightly connected. The injection and filtration of the sample are realized by depressing the plunger of the syringe 6 .

When in use, first insert the sampling hose 1 into the sample to be filtered, insert the syringe filter head 5 with a suitable aperture into the outlet c10 of the sample outlet check valve 4, and direct the outlet d8 of the syringe filter head 5 to collect the filtrate In the container, the piston of the syringe 6 is pulled to make the sample to be filtered enter the syringe 6 through the sample injection check valve 2, and the sample discharge check valve 4 is in a closed state at this time. Draw the sample to a suitable position, press the piston of the syringe 6, at this time, the sample injection check valve 2 is in a closed state due to the pressure, and the sample flows into the syringe filter head 5 from the sample discharge check valve 4, and then flows to the collection container after being filtered. If a large number of samples need to be filtered, only need to repeat the piston operation of pumping and pressing the syringe 6, the sample will be continuously pumped to the required volume, avoiding the need to frequently insert and pull out the syringe filter when the traditional syringe filtration device is used for suction and filtration. operation of the head.

Claims (1)

1. a kind of continous way syringe membrane filtration device, which is characterized in that sample introduction hose (1), sample introduction check valve (2) water inlet The water outlet b of a (11), the water outlet a (12) of sample introduction check valve (2), the water inlet b (13) of three-way pipe (3), three-way pipe (3) (14), the water inlet c (9) for going out sample check valve (4) is sequentially connected, and connection type is to be glued, sample introduction check valve (2) and to go out sample unidirectional The circulating direction of valve (4) is all the direction that sample check valve (4) are flowed to out from sample introduction hose (1)；Go out the water outlet of sample check valve (4) C (10) is inserted into replaceable syringe filtering head (5) water inlet d (7) and combines closely, and the syringe that syringe (6) is inserted into three-way pipe (3) is inserted Mouth (15) is combined closely, and the piston by taking out pressing cylinder (6) realizes sample introduction and the filtering of sample.