CN214680461U

CN214680461U - Syringe needle filter

Info

Publication number: CN214680461U
Application number: CN202120318642.1U
Authority: CN
Inventors: 帖志刚
Original assignee: Henan Beiliwo Biological Technology Co ltd
Current assignee: Henan Beiliwo Biological Technology Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-11-12
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a syringe needle filter, including lower cover, input tube, upper cover and output tube, the bottom surface of lower cover is connected with the input tube, the inside of lower cover is provided with the upper cover, the upper surface of upper cover is provided with the output tube, the inside wall of lower cover is seted up flutedly, the inside of lower cover and the inside of input tube are provided with the resistance-increasing device, the interior roof of upper cover is provided with a plurality of water conservancy diversion pieces, and the central axis evenly distributed of water conservancy diversion piece about the upper cover. The utility model has the advantages that: the utility model discloses a medical liquid treatment device, including the input tube, the spiral piece is provided with the feed cylinder, the spiral piece is provided with the flow of inlet pipe, the flow of inlet pipe is provided with the spiral piece and is can make the liquid medicine flow in the inside of spiral piece, reduces the volume of absorbing the liquid medicine and can increase the resistance to the liquid medicine, reduces the velocity of flow of liquid medicine, prevents that the liquid medicine from directly flowing to first filter membrane, is provided with the reposition of redundant personnel piece through the inside wall at the kelly and can make the liquid medicine from the input tube disperse, prevents that the liquid medicine from directly colliding first filter membrane and make first filter membrane bear the impact and break.

Description

Syringe needle filter

Technical Field

The utility model relates to an experimental apparatus equipment field, especially a syringe needle filter.

Background

The needle filter is a rapid, convenient and reliable filtering tool which is conventionally used in laboratories, is mainly used for applications such as sample pre-filtering, clarification and particle removal, sterilization and filtration of liquid and gas, and is widely applied in the fields of biology, medicine, food, environment, chemical industry and the like.

When a part of the existing needle head type filter is used, a filtering membrane inside the filter is easy to cause impurities to enter an instrument due to the fact that the pressure of extracted liquid is too large, the instrument is damaged, most of the existing needle head type filters are disposable and can not be disassembled, the disposable filter can cause waste of a large amount of resources after being used for a long time, the filtering membrane can not be recycled or replaced, and therefore the needle head type filter is provided for solving the technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the shortcoming of prior art, provide a syringe needle filter.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a syringe needle filter, includes lower cover, input tube, upper cover and output tube, the bottom surface of lower cover is connected with the input tube, the inside of lower cover is provided with the upper cover, the upper surface of upper cover is provided with the output tube, the inside wall of lower cover is seted up flutedly, the inside of lower cover and the inside of input tube are provided with the resistance-increasing device, the interior roof of upper cover is provided with a plurality of water conservancy diversion pieces, and the central axis evenly distributed of water conservancy diversion piece about the upper cover, the inside of lower cover is provided with filter equipment, the surface of upper cover is provided with the tighrening ring, and the tighrening ring carries out threaded connection with the surface of lower cover.

According to a further technical scheme, the resistance increasing device comprises a spiral sheet, a clamping rod, a flow dividing block and a flow blocking ring, the spiral sheet is connected onto the inner side wall of the input pipe, the flow blocking ring with at least one number is arranged at the bottom of the inner side wall of the lower cover, the clamping rod is clamped inside the groove, and the flow dividing block is connected onto the inner side wall of the clamping rod.

A further technical scheme is that the filtering device comprises a fixing plate, a first sealing ring, a second sealing ring, a first filter membrane and a second filter membrane, wherein the second sealing ring is arranged on the upper surface of the step inside the lower cover, the fixing plate is arranged above the second sealing ring and located between the step of the lower cover and the upper cover, the first filter membrane is arranged between the fixing plate and the second sealing ring, the second filter membrane is arranged on the upper surface of the fixing plate, and the first sealing ring is arranged between the second filter membrane and the upper cover.

Still further, the inner bottom wall of the fastening ring and the upper surface of the upper cover are provided with third sealing rings.

The further technical scheme is that the first filter membrane and the second filter membrane are both made of nylon membranes, and the pore diameter of the first filter membrane is larger than that of the second filter membrane.

The technical scheme is that the inner cavities of the lower cover and the upper cover are both conical, and the outer surface of the input pipe is conical.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with the flight in the inside of input tube and can make the liquid medicine flow in the inside of flight, reduce the volume of absorbing the liquid medicine and can increase the resistance to the liquid medicine, reduce the velocity of flow of liquid medicine, prevent that the liquid medicine from directly flowing to first filter membrane, it can make the liquid medicine that comes from the input tube disperse to be provided with the reposition of redundant personnel piece through the inside wall at the kelly, prevent that the liquid medicine from directly colliding first filter membrane and making first filter membrane bear the impact and break, it makes the liquid medicine that comes from the reposition of redundant personnel piece further reduce the impact force to be provided with a plurality of baffling rings through the toper inside wall at the lower cover, make the liquid medicine spray to the outside and then flow to first filter membrane again, make the velocity of flow and the impact force that flow into the liquid of first filter membrane reduce to minimum, protect first filter membrane and take place to break because of the impact force.

2. The utility model discloses a make the aperture of first filter membrane be greater than the aperture of second filter membrane and can make and filter the liquid medicine one by one, prevent because impurity too much takes place to block up, can seal the liquid medicine in lower cover and the upper cover through mutually supporting between first sealing ring and second sealing ring and lower cover and upper cover and the fixed plate, prevent that the liquid medicine from flowing, carry out threaded connection through lower cover and tighrening ring and not only can convenient to detach change, have sealed effect to a certain extent moreover.

Drawings

Fig. 1 is a schematic view of the overall structure of the filter of the present invention.

Fig. 2 is a schematic front cross-sectional view of the filter of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2 according to the present invention.

In the figure, 1, a lower cover; 2. an input tube; 3. an upper cover; 4. an output pipe; 5. a fastening ring; 6. a resistance increasing device; 61. a spiral sheet; 62. a clamping rod; 63. a shunting block; 64. a flow blocking ring; 7. a groove; 8. a flow guide block; 9. a filtration device; 91. a fixing plate; 92. a first seal ring; 93. a second seal ring; 94. a first filter membrane; 95. a second filter membrane; 10. and a third seal ring.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to the embodiment shown in fig. 1-3, a syringe filter comprises a lower cap 1, an input tube 2, an upper cap 3 and an output tube 4, wherein the input tube 2 is connected to the bottom surface of the lower cap 1, the outer surface of the input tube 2 is tapered, so that the input tube 2 blocks the mouth of a liquid medicine bottle when the liquid medicine is sucked, thereby preventing dust from entering the liquid medicine bottle to pollute the liquid medicine, the upper cap 3 is arranged inside the lower cap 1, the output tube 4 is arranged on the upper surface of the upper cap 3, the inner cavities of the lower cap 1 and the upper cap 3 are both tapered, a groove 7 is arranged on the inner side wall of the lower cap 1, resistance increasing devices 6 are arranged inside the lower cap 1 and the input tube 2, each resistance increasing device 6 comprises a spiral sheet 61, a clamping rod 62, a flow dividing block 63 and a flow blocking ring 64, the inner side wall of the input tube 2 is connected with a spiral sheet 61, the liquid medicine flows inside the spiral sheet 61 to reduce the amount of the sucked liquid medicine and increase the resistance to the liquid medicine, the flow velocity of the liquid medicine is reduced, the bottom of the inner side wall of the lower cover 1 is provided with at least one flow blocking ring 64, the clamping rod 62 is clamped in the groove 7, the inner side wall of the clamping rod 62 is connected with the shunting block 63, the liquid medicine from the input pipe 2 can be dispersed through the shunting block 63, the flow velocity of the sucked liquid medicine and the generated impact force are further reduced, the inner top wall of the upper cover 3 is provided with a plurality of flow guide blocks 8, the flow guide blocks 8 are uniformly distributed about the central axis of the upper cover 3, the liquid medicine from the shunting block 63 is further reduced in impact force through the flow blocking ring 64, the impact force entering the inner cavity of the lower cover 1 is minimum, the filtering device 9 is arranged in the lower cover 1, the filtering device 9 comprises a fixing plate 91, a first sealing ring 92, a second sealing ring 93, a first filter membrane 94 and a second filter membrane 95, the upper surface of the step in the lower cover 1 is provided with a second sealing ring 93, a fixing plate 91 is arranged above the second sealing ring 93, the fixing plate 91 is positioned between the step of the lower cover 1 and the upper cover 3, a first filter membrane 94 is arranged between the fixing plate 91 and the second sealing ring 93, a second filter membrane 95 is arranged on the upper surface of the fixing plate 91, a first sealing ring 92 is arranged between the second filter membrane 95 and the upper cover 3, the first filter membrane 94 and the second filter membrane 95 are both made of nylon membranes, the aperture of the first filter membrane 94 is larger than that of the second filter membrane 95, the aperture of the first filter membrane 94 is 0.45 micrometer, the aperture of the second filter membrane 95 is 0.22 micrometer, when filtering is carried out, the liquid medicine is firstly filtered through the first filter membrane 94 and then through the second filter membrane 95 doubly, if the first filter membrane 94 is broken, the second filter membrane 95 is used for worrying, so that impurities are prevented from entering the instrument, a fastening ring 5 is arranged on the outer surface of the upper cover 3, and the fastening ring 5 is in threaded connection with the outer surface of the lower cover 1, can play a role of sealing, and prevent the medical liquid from flowing to the outside of the filter to cause the pollution of the working environment after the sealing of the first sealing ring 92 and the second sealing ring 93 is failed, and the inner bottom wall of the fastening ring 5 and the upper surface of the upper cover 3 are provided with the third sealing ring 10.

The working process of the utility model is as follows: this filter is when carrying out work, at first make output tube 4 be connected with the syringe, then go deep into the container to input tube 2 again, absorb the liquid medicine through the syringe, the liquid medicine enters into the inside of lower cover 1 through flight 61, the liquid medicine is shunted through reposition of redundant personnel piece 63 when entering, make the liquid medicine dispersion of reposition of redundant personnel slow down on baffling ring 64 and make the impact force reduce, then reentrant the inside cavity of lower cover 1, filter liquid through first filter membrane 94 and second filter membrane 95, filter impurity away, make filterable liquid satisfy the requirement, liquid enters into the syringe through the drainage of water conservancy diversion piece 8 after filtering, then shift to in the instrument again.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a syringe needle filter, includes lower cover (1), input tube (2), upper cover (3) and output tube (4), the bottom surface of lower cover (1) is connected with input tube (2), the inside of lower cover (1) is provided with upper cover (3), the upper surface of upper cover (3) is provided with output tube (4), its characterized in that: the utility model discloses a filter, including lower cover (1), the inside wall of lower cover (1) is seted up fluted (7), the inside of lower cover (1) and the inside of input tube (2) are provided with and increase resistance device (6), the interior roof of upper cover (3) is provided with a plurality of water conservancy diversion pieces (8), and water conservancy diversion piece (8) central axis evenly distributed about upper cover (3), the inside of lower cover (1) is provided with filter equipment (9), the surface of upper cover (3) is provided with tighrening ring (5), and tighrening ring (5) and the surface of lower cover (1) carry out threaded connection.

2. A needle filter according to claim 1, wherein: the resistance increasing device (6) comprises a spiral sheet (61), a clamping rod (62), a flow dividing block (63) and a flow blocking ring (64), wherein the spiral sheet (61) is connected to the inner side wall of the input pipe (2), the flow blocking ring (64) with at least one number is arranged at the bottom of the inner side wall of the lower cover (1), the clamping rod (62) is clamped inside the groove (7), and the flow dividing block (63) is connected to the inner side wall of the clamping rod (62).

3. A needle filter according to claim 1, wherein: the filtering device (9) comprises a fixing plate (91), a first sealing ring (92), a second sealing ring (93), a first filter membrane (94) and a second filter membrane (95), wherein the second sealing ring (93) is arranged on the upper surface of the step inside the lower cover (1), the fixing plate (91) is arranged above the second sealing ring (93), the fixing plate (91) is located between the step of the lower cover (1) and the upper cover (3), the first filter membrane (94) is arranged between the fixing plate (91) and the second sealing ring (93), the second filter membrane (95) is arranged on the upper surface of the fixing plate (91), and the first sealing ring (92) is arranged between the second filter membrane (95) and the upper cover (3).

4. A needle filter according to claim 1, wherein: and a third sealing ring (10) is arranged on the inner bottom wall of the fastening ring (5) and the upper surface of the upper cover (3).

5. A needle filter according to claim 3, wherein: the first filter membrane (94) and the second filter membrane (95) are both made of nylon membranes, and the pore size of the first filter membrane (94) is larger than that of the second filter membrane (95).

6. A needle filter according to claim 1, wherein: the inner cavities of the lower cover (1) and the upper cover (3) are both conical, and the outer surface of the input pipe (2) is conical.