Portable ammonia nitrogen on-line monitor

Abstract

The utility model discloses a portable ammonia nitrogen on -line monitor, it includes: instrument body, the end surface of instrument body is provided with recess, the bottom inner wall of recess is provided with the detection groove for installing colorimetric flask, the top of detection groove rotatably is provided with the protective cover for closing recess, the inside of recess is located the top of detection groove and is slidably provided with the limit ring, the middle position of limit ring is equipped with the through -hole that links to each other with detection groove, and the inside of through -hole is provided with annular pressing plate for limiting colorimetric flask position, annular pressing plate is by a plurality of arc plate splicing and, and, a plurality of arc plate between have installation passageway. The portable ammonia nitrogen on -line monitor that the application presents adopts annular pressing plate and presses colorimetric flask tightly, prevents colorimetric flask and shakes in detection groove, guarantees the detection of solution in colorimetric flask, need not repeatedly open and close protective cover, avoids the locking structure fatigue or damage of protective cover, prolongs protective cover locking structure life, improves the stability of protective cover locking.

Description

Technical Field

[0001] This utility model relates to the technical field of ammonia nitrogen monitoring equipment, specifically to a portable online ammonia nitrogen monitor. Background Technology

[0002] Portable ammonia nitrogen online monitors are water quality testing devices that integrate high precision, portability, and real-time monitoring functions. They are mainly used to rapidly determine the concentration of ammonia nitrogen in water bodies. Their core detection principles mainly include two types: electrode method and colorimetric method. Among them, the electrode method instrument uses ion-selective electrodes to measure the potential difference caused by ammonia nitrogen to calculate the concentration. It has a fast response speed and usually supports automatic temperature and pH compensation. The colorimetric method calculates the result by chemical reaction color development and measuring absorbance. It conforms to national standard methods, and the error can be controlled within ±3%. It is widely used in water quality monitoring in the fields of surface water, industrial wastewater, and municipal sewage, realizing continuous monitoring, improving regulatory efficiency, and optimizing water treatment processes. However, existing portable online ammonia nitrogen monitors typically place the test solution in a colorimetric bottle, which is then placed in the instrument's detection chamber for testing. To prevent the detection chamber from being contaminated by prolonged exposure to air, existing portable online ammonia nitrogen monitors usually use a protective cap to seal the detection chamber and limit the position of the colorimetric bottle. During use, this requires repeatedly opening and closing the protective cap, removing and placing the colorimetric bottle, and adding pure water, test solution, etc., to the bottle for multiple tests, which can easily lead to fatigue or damage to the locking structure of the protective cap. Therefore, those skilled in the art have provided a portable online ammonia nitrogen monitor to solve the problems mentioned in the background art. Utility Model Content

[0003] To overcome the aforementioned deficiencies of the prior art, this application provides a portable online ammonia nitrogen monitor. It employs a ring-shaped pressure plate to firmly hold the colorimetric bottle in place, preventing it from shaking in the detection chamber and ensuring accurate detection of the solution within the bottle. This eliminates the need for repeated opening and closing of the protective cap, avoiding fatigue or damage to the cap's locking structure, extending its lifespan, and improving the stability of the cap's locking mechanism. This addresses the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A portable online ammonia nitrogen monitor includes: an instrument body, a groove on the end face of the instrument body, a detection slot for mounting a colorimetric bottle on the bottom inner wall of the groove, a protective cover for sealing the groove rotatably mounted above the detection slot, a limiting ring slidably mounted inside the groove directly above the detection slot, a through hole communicating with the detection slot at the middle position of the limiting ring, and an annular pressure plate for limiting the position of the colorimetric bottle inside the through hole; the annular pressure plate is composed of several arc-shaped plates spliced ​​together, and there are installation channels between the arc-shaped plates, through which the colorimetric bottle is inserted into the detection slot, and the arc-shaped plates slide inside the through hole and press against the top of the colorimetric bottle.

[0005] Preferably, the back of the arc-shaped plate is provided with an insert plate, and a slot is provided at the position corresponding to the insert plate on the inner wall of the through hole. The insert plate is inserted into the slot and slides inside it.

[0006] Preferably, a slide rod is provided at one end of the insert plate inside the slot, the slide rod passes through the limiting ring and extends to its outside, and a push plate for pulling the arc plate displacement is provided at the other end of the slide rod outside the limiting ring.

[0007] Preferably, a return spring for resetting the arc-shaped plate is provided on the outer wall of the slide rod between the insert plate and the inner wall of the slot.

[0008] Preferably, the bottom inner wall of the groove is uniformly provided with a number of sliding grooves around the outside of the detection groove, and a pull rod is slidably provided inside the sliding groove. The pull rod extends out of the sliding groove in a movable manner and is threadedly installed on the lower end face of the limiting ring.

[0009] Preferably, an annular baffle is provided at the opening of the slide groove, the pull rod extends out of the slide groove through the annular baffle, and an annular end plate is provided at one end of the pull rod inside the slide groove. The diameter of the annular end plate is larger than the inner diameter of the annular baffle, and a limit spring is provided between the end face of the annular end plate and the annular baffle and around the outside of the pull rod.

[0010] Preferably, a threaded post is provided at one end of the pull rod located outside the slide groove, and a threaded hole is provided at the position corresponding to the threaded post on the lower end face of the limiting ring, with the threaded post threadedly installed inside the threaded hole.

[0011] Compared with the prior art, the advantages of this utility model are: By setting a limiting ring and an annular pressure plate above the detection tank, the colorimetric bottle can be installed in the detection tank. The pull rod pulls the limiting ring downward through the elastic force of the limiting spring. The limiting ring drives the annular pressure plate in the middle through hole to press firmly above the colorimetric bottle, limiting the position of the colorimetric bottle and preventing it from shaking in the detection tank. This ensures the detection of the solution in the colorimetric bottle without the need for repeated opening and closing of the protective cap, avoiding fatigue or damage to the locking structure of the protective cap, extending the life of the locking structure of the protective cap, and improving the stability of the protective cap locking. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a perspective view of a portable online ammonia nitrogen monitor according to an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the instrument body according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the assembly of the limiting ring and the annular pressure plate according to an embodiment of the present invention; Figure 4 This is a three-dimensional schematic diagram of an arc-shaped plate according to an embodiment of the present invention; Figure 5 This is a perspective view of a pull rod according to an embodiment of the present invention.

[0014] In the diagram: 1. Instrument body; 101. Groove; 102. Detection groove; 103. Slide groove; 11. Protective cover; 2. Limiting ring; 201. Through hole; 202. Slot; 203. Threaded hole; 3. Annular pressure plate; 31. Arc plate; 32. Insert plate; 33. Slide rod; 34. Return spring; 35. Push plate; 4. Pull rod; 41. Annular end plate; 42. Limiting spring; 43. Threaded column. Detailed Implementation

[0015] Combination Figures 1-5 As shown in this embodiment, a portable online ammonia nitrogen monitor includes: an instrument body 1, a groove 101 is provided on the end face of the instrument body 1, and a detection groove 102 for installing a colorimetric bottle is provided on the bottom inner wall of the groove 101; the colorimetric bottle is installed in the detection groove 102, and the ammonia nitrogen in the water sample undergoes a colorimetric reaction with the reagent, and the absorbance is measured by an optical sensor to calculate the structure, thereby realizing the detection of ammonia nitrogen concentration.

[0016] In this embodiment, a protective cover 11 for sealing the groove 101 is rotatably disposed above the detection groove 102; the protective cover 11 is flipped in the detection groove 102 by a hinge shaft to realize the opening and closing of the protective cover 11. At the same time, closing the protective cover 11 can seal the detection groove 102 in the groove 101, preventing the detection groove 102 from being exposed to the air and being contaminated, thus affecting the solution detection.

[0017] In this embodiment, a limiting ring 2 is slidably disposed inside the groove 101 directly above the detection groove 102. A through hole 201 communicating with the detection groove 102 is provided at the middle position of the limiting ring 2, and an annular pressure plate 3 for limiting the position of the colorimetric bottle is disposed inside the through hole 201. The limiting ring 2 moves the annular pressure plate 3 downward directly above the detection groove 102, so that the annular pressure plate 3 presses against the top of the colorimetric bottle to prevent the colorimetric bottle from shaking in the detection groove 102, thereby limiting the position of the colorimetric bottle.

[0018] In this embodiment, the annular pressure plate 3 is composed of several arc-shaped plates 31 spliced ​​together, and there is an installation channel between the arc-shaped plates 31. The colorimetric bottle is inserted into the inside of the detection groove 102 through the installation channel, and the arc-shaped plates 31 slide inside the through hole 201 and press against the top of the colorimetric bottle. The arc-shaped plates 31 slide towards the inner wall of the through hole 201 to increase the diameter of the installation channel between the arc-shaped plates 31, so as to prevent the colorimetric bottle from being unable to pass due to the small diameter of the installation channel, and ensure the installation of the colorimetric bottle.

[0019] In this embodiment, an insert plate 32 is provided on the back of the arc plate 31. A slot 202 is provided at the position corresponding to the insert plate 32 on the inner wall of the through hole 201. The insert plate 32 is inserted into the slot 202 and slides inside it. The sliding of the insert plate 32 in the slot 202 can push the arc plate 31 to slide towards the center position of the through hole 201. Several arc plates 31 are spliced ​​together to form an annular pressure plate 3, realizing the assembly of the annular pressure plate 3.

[0020] In this embodiment, a slide rod 33 is provided at one end of the insert plate 32 located inside the slot 202. The slide rod 33 passes through the limiting ring 2 and extends to its outside. A push plate 35 for pulling the arc plate 31 is provided at the other end of the slide rod 33 located outside the limiting ring 2. A reset spring 34 for resetting the arc plate 31 is provided between the outer wall of the slide rod 33 and the inner wall of the slot 202. Driving the push plate 35 to move outward allows the push plate 35 to pull the insert plate 32 to slide in the slot 202 through the slide rod 33 and press the reset spring 34 to deform. Then, the sliding insert plate 32 pulls the arc plate 31 connected to it to slide in the through hole 201 towards its inner wall, thereby adjusting the size of the installation channel between the arc plates 31. At the same time, releasing the push plate 35 allows the insert plate 32 and the arc plate 31 to return to their original positions under the elastic force of the reset spring 34, thereby limiting the arc plate 31.

[0021] In this embodiment, a plurality of sliding grooves 103 are evenly arranged around the bottom inner wall of the groove 101 surrounding the outside of the detection groove 102. An annular baffle is provided at the opening of the sliding groove 103. The pull rod 4 extends out of the sliding groove 103 through the annular baffle. Furthermore, an annular end plate 41 is provided at one end of the pull rod 4 located inside the sliding groove 103. The diameter of the annular end plate 41 is larger than the inner diameter of the annular baffle. Pulling the limiting ring 2 upward allows the limiting ring 2 to drive the pull rod 4 to move upward in the sliding groove 103. At the same time, the position of the annular end plate 41 is limited by the annular baffle, which can prevent the pull rod 4 from disengaging from the sliding groove 103. This avoids the situation where the limiting ring 2 falls off the instrument body 1 due to the pull rod 4 disengaging from the sliding groove 103, thus ensuring the use of the limiting ring 2.

[0022] In this embodiment, a limiting spring 42 is provided between the end face of the annular end plate 41 and the annular baffle and around the outside of the pull rod 4; the pull rod 4 can be pulled down by the elastic force of the limiting spring 42 to pull the limiting ring 2 downward, so that the limiting ring 2 drives the annular pressure plate 3 installed in its internal through hole 201 to press against the colorimetric bottle, thereby limiting the colorimetric bottle.

[0023] In this embodiment, a threaded post 43 is provided at one end of the pull rod 4 located outside the slide groove 103. A threaded hole 203 is provided at the position corresponding to the threaded post 43 on the lower end face of the limiting ring 2. The threaded post 43 is threadedly installed inside the threaded hole 203. By rotating the pull rod 4 in sequence, the pull rod 4 rotates in the slide groove 103, and the threaded post 43 at the top of the pull rod 4 is installed in the threaded hole 203 on the lower end face of the limiting ring 2, thereby realizing the assembly of the pull rod 4 and the limiting ring 2.

[0024] The working principle of this utility model is as follows: The portable online ammonia nitrogen monitor proposed in this application, by setting a limiting ring 2 and an annular pressure plate 3 above the detection slot 102, can drive the push plate 35 to move outward, so that the push plate 35 pulls the insert plate 32 to slide in the slot 202 through the slide rod 33 and presses the reset spring 34 to deform. Then, the sliding insert plate 32 pulls the arc plate 31 connected to it to slide into the inner wall of the through hole 201, increasing the diameter of the installation channel between the arc plates 31. Then, the colorimetric bottle is inserted into the detection slot 102 through the installation channel, and the push plate 35 is released to allow the insert plate to move outward. Under the elastic force of the return spring 34, the arc plate 32 and the arc plate 31 return to their original positions, thus limiting the arc plate 31. At the same time, under the elastic force of the limit spring 42, the pull rod 4 pulls the limit ring 2 downward. The limit ring 2 drives the annular pressure plate 3 installed in its internal through hole 201 to press against the colorimetric bottle, limiting the position of the colorimetric bottle and preventing it from shaking in the detection groove 102. This ensures the detection of the solution in the colorimetric bottle without the need for repeated opening and closing of the protective cover 11, avoiding fatigue or damage to the locking structure of the protective cover 11, extending the life of the locking structure of the protective cover 11, and improving the stability of the locking of the protective cover 11.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A portable online ammonia nitrogen monitor, comprising: The instrument body (1) has a groove (101) on its end face. The bottom inner wall of the groove (101) is provided with a detection groove (102) for installing a colorimetric bottle. A protective cover (11) for closing the groove (101) is rotatably provided above the detection groove (102). The instrument body (101) is characterized in that a limiting ring (2) is slidably provided inside the groove (101) directly above the detection groove (102). A through hole (201) communicating with the detection groove (102) is provided at the middle position of the limiting ring (2). An annular pressure plate (3) for limiting the position of the colorimetric bottle is provided inside the through hole (201). The annular pressure plate (3) is composed of several arc-shaped plates (31) spliced ​​together, and there is an installation channel between the several arc-shaped plates (31). The colorimetric bottle is inserted into the inside of the detection groove (102) through the installation channel, and the several arc-shaped plates (31) slide inside the through hole (201) and press against the top of the colorimetric bottle.

2. The portable online ammonia nitrogen monitor according to claim 1, characterized in that, The back of the arc plate (31) is provided with a plate (32), and a slot (202) is provided at the position corresponding to the plate (32) on the inner wall of the through hole (201). The plate (32) is inserted into the slot (202) and slides inside it.

3. The portable online ammonia nitrogen monitor according to claim 2, characterized in that, The insert plate (32) is provided with a slide rod (33) at one end inside the slot (202). The slide rod (33) passes through the limiting ring (2) and extends to its outside. The slide rod (33) is provided with a push plate (35) for pulling the arc plate (31) to move.

4. A portable online ammonia nitrogen monitor according to claim 3, characterized in that, The outer wall of the slide bar (33) is provided with a reset spring (34) for resetting the arc plate (31) between the insert plate (32) and the inner wall of the slot (202).

5. A portable online ammonia nitrogen monitor according to claim 1, characterized in that, The bottom inner wall of the groove (101) is uniformly provided with a number of sliding grooves (103) around the outside of the detection groove (102). A pull rod (4) is slidably provided inside the sliding groove (103). The pull rod (4) extends out of the sliding groove (103) in a movable manner and is threaded onto the lower end face of the limiting ring (2).

6. A portable online ammonia nitrogen monitor according to claim 5, characterized in that, An annular baffle is provided at the opening of the slide groove (103). The pull rod (4) extends out of the slide groove (103) through the annular baffle. An annular end plate (41) is provided at one end of the pull rod (4) inside the slide groove (103). The diameter of the annular end plate (41) is larger than the inner diameter of the annular baffle. A limit spring (42) is provided between the end face of the annular end plate (41) and the annular baffle and around the outside of the pull rod (4).

7. A portable online ammonia nitrogen monitor according to claim 6, characterized in that, The pull rod (4) is provided with a threaded post (43) at one end outside the slide groove (103). The lower end face of the limiting ring (2) is provided with a threaded hole (203) at the position corresponding to the threaded post (43). The threaded post (43) is threadedly installed inside the threaded hole (203).

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