Snap-on sewage syringe filter

Abstract

The utility model relates to a laboratory equipment technical field, concretely relates to a buckle type sewage needle cylinder filter, including lower half and upper half. The lower half and the one side of upper half are hinged through the hinge part, and the other side relative to hinge part is connected through the buckle, the funnel part is arranged below the lower half, the liquid outlet is arranged at the bottom of funnel part, and the pressure rim part is arranged between the funnel part and the inner side wall of lower half, the cooperation part is arranged below the upper half, the sealing ring clamping groove is arranged on the outer periphery of cooperation part, and the sealing ring is sleeved through the sealing ring clamping groove, the needle head butt joint part is arranged above the upper half, the filter screen is arranged at the front end of cooperation part, and the cloth liquid cavity is arranged between filter screen and needle head butt joint part. The utility model adopts the hinge and buckle mode, avoids the leakage situation caused by the cross use between individuals of traditional screw split type connection, further, is more time -saving and labour -saving in use, and is convenient for the use of laboratory.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, specifically to a snap-on sewage syringe filter. Background Technology

[0002] In the process of municipal wastewater treatment, in order to ensure the stable operation of the wastewater treatment system, it is often necessary to detect the key parameters of the system operation, and then adjust the operating parameters of the wastewater treatment system based on the detection results to ensure the stable operation of the system.

[0003] Currently, automated monitoring equipment is widely used in the operation of wastewater treatment systems. Automated monitoring equipment can monitor key parameters in the wastewater treatment process and control them through on-site PLCs, which can effectively ensure the stable operation of the wastewater treatment system. However, in actual operation, although automated monitoring equipment is used, traditional manual laboratory testing is still indispensable. Manual sampling and testing is not only commonly used for the calibration of various instruments and equipment, but also for daily testing. It is a necessary means to ensure the stable operation of the wastewater treatment system.

[0004] Due to the high impurity content in wastewater, filtration is a necessary and effective method during wastewater sampling and testing. In routine laboratory operations, syringes combined with syringe filters are commonly used for wastewater sampling and filtration. However, existing syringe filters use a threaded connection between the upper and lower parts. In laboratories, with a large number of syringe filters, different ones are easily mixed up during use. Furthermore, quality differences between different batches often lead to poor fit and leakage when used interchangeably. To ensure a tight seal, laboratory personnel often need to forcefully tighten the syringe filters, which is time-consuming and laborious. Moreover, the deformation of the plastic material during prolonged tightening further exacerbates this problem. Additionally, since the sealing ring is only located in the lower part, it is prone to loss, causing inconvenience to daily laboratory work.

[0005] Therefore, this utility model proposes a snap-fit ​​sewage syringe filter, which hinges the two halves of the syringe filter and then connects them by snap-fit, effectively avoiding the cross-use situation that is easy to occur with traditional threaded connections, and is more time-saving and labor-saving; in addition, the sealing ring is fixedly sleeved on the mating part below the upper half, which also avoids the leakage or loss of the sealing ring, making it more convenient for laboratory use. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the prior art by providing a snap-on sewage syringe filter, thereby avoiding the problem of cross-use between the upper and lower parts of traditional split syringe filters, which can lead to a series of inconveniences in subsequent use.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a snap-fit ​​sewage syringe filter, comprising a lower half and an upper half; the lower half and the upper half are hinged together on one side by a hinge, and the upper half and the lower half are connected by a snap-fit ​​on the other side relative to the hinge.

[0008] Furthermore, a funnel portion is provided at the bottom of the lower half, a liquid outlet is provided at the bottom of the funnel portion, and a pressing edge portion is provided between the funnel portion and the inner sidewall of the lower half; the funnel portion cooperates with the filter paper, and the pressing edge portion cooperates with the edge of the filter paper.

[0009] Furthermore, a mating part is provided at the lower part of the upper portion, which mates with the lower portion; a sealing ring groove is provided around the outer periphery of the mating part, through which a sealing ring is fixedly fitted; the sealing ring is sealed and mated with the inner wall of the lower portion.

[0010] Furthermore, at least one sealing ring groove and one sealing ring are provided.

[0011] Furthermore, a needle docking part is provided above the upper part, which mates with the front end of the syringe; a filter screen is provided at the front end of the docking part, and a liquid distribution chamber is provided between the filter screen and the needle docking part.

[0012] Furthermore, the front periphery of the mating part is tightly fitted against the pressing edge part.

[0013] Furthermore, the buckle includes a buckle block and a buckle plate groove; the buckle block is connected to the lower half, and the buckle plate groove is connected to the upper half; the buckle block and the buckle plate groove cooperate with each other.

[0014] The beneficial effects of this utility model are: 1. The upper and lower halves of this utility model are hinged together, so the upper and lower halves do not need to be separated. This effectively avoids the situation where the upper and lower halves of different split syringe filters are easily used interchangeably when used in the laboratory due to the large number of filters. It also avoids the leakage caused by the mismatch between product batches, thus ensuring the stability of use. 2. This utility model avoids the situation where traditional threaded connections are often tightened very tightly to ensure sealing, which makes opening and closing difficult, making it more time-saving and labor-saving to use; 3. This utility model fixes the sealing ring on the mating part, avoiding the traditional sealing ring being placed in the lower half, which is prone to being missed or lost during laboratory operations, and is more convenient to use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a split-type syringe filter in the prior art; Figure 2 This is a schematic diagram of the upper part of a split-type syringe filter in the prior art; Figure 3 This is a schematic diagram of the snap-fit ​​syringe filter structure (hinged side). Figure 4 This is a schematic diagram of the snap-on syringe filter structure (snap-on side). Figure 5 This is a schematic diagram of the snap-on syringe filter structure of this utility model (open state); Figure 6 This is a schematic diagram of the lower half of the snap-on syringe filter of this utility model; Figure 7 This is a schematic diagram of the upper part (hinged side) of the snap-fit ​​syringe filter of this utility model. Figure 8 This is a schematic diagram of the upper part (snap-on side) of the snap-on syringe filter of this utility model.

[0016] The names corresponding to each mark in the diagram: 1. Split-type syringe filter; 11. First lower half; 111. First funnel part; 112. Sealing ring placement groove; 113. First outlet; 114. Internal thread; 12. First sealing ring; 13. Filter paper; 14. First upper half; 141. External thread; 142. First needle docking part; 143. First filter screen; 144. First liquid distribution chamber; 2. Snap-on syringe filter; 21. Second lower half; 211. Second funnel part; 212. Pressure edge part; 213. Second outlet; 22. Second upper half; 221. Fitting part; 222. Second needle docking part; 223. Second filter screen; 224. Second liquid distribution chamber; 225. Sealing ring slot; 226. Second sealing ring; 23. Hinge part; 24. Snap-on; 241. Locking block; 242. Locking plate groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] The prior art involved in this utility model: like Figure 1-2 As shown, the prior art syringe filter is a split syringe filter 1, including a first lower half 11 and a first upper half 14; the first lower half 11 is a circular groove, and a first funnel part 111 is provided below the first lower half 11, and a first liquid outlet 113 is provided at the bottom of the first funnel part 111; an internal thread 114 is provided on the inner side wall of the first lower half 11, and a sealing ring placement groove 112 is provided between the upper edge of the first funnel part 111 and the inner side wall, through which the first sealing ring 12 can be placed and removed.

[0019] The first upper part 14 includes a threaded connection portion connected to the first lower part 11. An external thread 141 is provided on the threaded connection portion, and the external thread 141 engages with an internal thread 114. A first needle docking portion 142 is provided below the first upper part 14, and the first docking portion engages with the front end of the syringe. A first filter screen 143 is provided at the front end of the threaded connection portion, and a first liquid distribution chamber 144 is provided between the first filter screen 143 and the first docking portion.

[0020] When the first lower half 11 and the first upper half 14 are engaged, filter paper 13 is placed on the first sealing ring 12. During the tightening process, the threaded connection part presses the filter paper 13 and the first sealing ring 12 to achieve a seal. Anti-slip textures are provided on the outer periphery of both the first lower half 11 and the first upper half 14 to facilitate tightening.

[0021] Embodiments of this utility model: like Figure 3-8 As shown, the snap-fit ​​syringe filter 2 in this embodiment includes a second lower half 21 and a second upper half 22. One side of the second lower half 21 and the second upper half 22 are hinged by a hinge portion 23, and the first lower half 11 and the second upper half 22 are connected to each other on the other side of the hinge portion 23 by a snap-fit ​​24.

[0022] The second lower half 21 is in the shape of a circular groove. A second funnel 211 is provided below the second lower half 21. A second liquid outlet 213 is provided at the bottom of the second funnel 211. A pressing edge 212 is provided between the upper edge of the second funnel 211 and the inner wall of the second lower half 21.

[0023] The second upper part 22 includes a mating part 221 that cooperates with the first lower part 11. Several sealing ring grooves 225 are provided around the outer periphery of the mating part 221, and a second sealing ring 226 is fitted through the sealing grooves. A second docking part is provided on the second upper part 22, which cooperates with the front end of the syringe. A second filter screen 223 is provided at the front end of the mating part 221, and a second liquid distribution chamber 224 is provided between the second filter screen 223 and the second docking part.

[0024] When the second lower half 21 mates with the second upper half 22, filter paper (not shown, see reference) is placed in the second lower half 21. Figure 1 The edge of the filter paper engages with the pressing edge 212, and the front end of the engaging part 221 presses against the edge of the filter paper; the buckle 24 includes a locking block 241 located on the second lower half 21 and a locking plate groove 242 located on the second upper half 22. When the second lower half 21 engages with the second upper half 22, the locking block 241 engages with the locking plate groove 242.

[0025] The principle of this utility model is as follows: This utility model is made entirely of PP material. When using this utility model, the second upper part 22 and the second lower part 21 are opened, and the filter paper is placed into the second lower part 21 (the filter paper is gently pressed so that it is basically in contact with the second funnel part 211). At this time, the second upper part 22 and the second lower part 21 are closed. Due to the plasticity of the material, when the second upper part 22 and the second lower part 21 are fastened, the locking plate groove 242 is slightly deformed and after the fit is in place, the locking block 241 is located in the locking groove in the locking plate groove 242, realizing the fastening of the second upper part 22 and the second lower part 21. When opening, the locking plate groove 242 (which has a certain thickness, such as 2~4mm) is pressed outward by hand and the second upper part 22 is rotated upward to separate the second lower part 21 from the second upper part 22.

[0026] When filtering wastewater samples, the wastewater sample is injected into the liquid distribution chamber by the syringe in conjunction with the second needle docking part 222. It is then coarsely filtered through the second filter screen 223 and then filtered a second time through filter paper to achieve the filtration of the wastewater sample. This allows for the detection of key parameters in the wastewater sample, such as sludge content, nitrate nitrogen, and ammonia nitrogen.

Claims

1. A snap-on type sewage syringe filter, characterized in that: It includes a lower half and an upper half; one side of the lower half and the upper half are hinged together by a hinge, and the other side of the upper half and the lower half are connected by a snap fastener.

2. A snap-on type sewage syringe filter according to claim 1, characterized in that: The lower half is provided with a funnel section at the bottom, a liquid outlet is provided at the bottom of the funnel section, and a pressing edge is provided between the funnel section and the inner sidewall of the lower half; the funnel section cooperates with the filter paper, and the pressing edge cooperates with the edge of the filter paper.

3. A snap-on type sewage syringe filter according to claim 2, characterized in that: The upper part has a mating part at its lower part, which mates with the lower part; a sealing ring groove is provided around the outer periphery of the mating part, through which a sealing ring is fixedly fitted; the sealing ring is sealed to the inner wall of the lower part.

4. A snap-on type sewage syringe filter according to claim 3, characterized in that: The aforementioned sealing ring groove and sealing ring shall be provided at least once.

5. A snap-on type sewage syringe filter according to claim 3, characterized in that: The upper part is provided with a needle docking part, which cooperates with the front end of the syringe; a filter screen is provided at the front end of the docking part, and a liquid distribution chamber is provided between the filter screen and the needle docking part.

6. A snap-on type sewage syringe filter according to claim 3, characterized in that: The front periphery of the mating part is tightly fitted with the pressing edge part.

7. A snap-on type sewage syringe filter according to claim 1, characterized in that: The buckle includes a buckle block and a buckle plate groove; the buckle block is connected to the lower half, and the buckle plate groove is connected to the upper half; the buckle block and the buckle plate groove cooperate with each other.

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