Water resource monitoring analyzer

Abstract

The invention provides a water resource monitoring analyzer, which belongs to the technical field of water quality monitoring, and comprises an analyzer main body, a support plate, a detection probe, an inverted conical positioning cover, a lifting mechanism and a torque limiter, the inverted-cone-shaped positioning cover is fixed under the detection probe with a large opening facing downwards, and the probe extends out of the lower end face by a fixed distance H (40-70mm); the lifting plate is located right below, the lifting mechanism adopts a servo motor to drive worm-worm gear-lead screw transmission, and a torque limiter is connected in series in a transmission chain; when the sampling container ascends, the opening part is automatically guided by the conical surface of the inverted conical cover to be accurately centered and attached, and the torque limiter is triggered to slip instantly by dramatic increase of resistance, so that automatic stop is realized. The problems that in the prior art, manual centering and manual stopping judgment are needed, the immersion depth is inconsistent, a head is prone to being collided, and residual liquid drips to pollute an instrument body are thoroughly solved, and full-automatic precise self-adaptive immersion of sampling containers of different specifications, zero pollution of the residual liquid and real unattended high-reliability online monitoring are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water quality monitoring, in particular to a water resource monitoring analyzer. BACKGROUND

[0002] The water resource monitoring analyzer is a key equipment widely used in the environmental protection field, mainly used for real-time or periodic online detection of various parameters such as COD, ammonia nitrogen, total phosphorus, total nitrogen, heavy metals and the like of water bodies such as rivers, lakes, sewage discharge outlets, so as to realize automatic, continuous and accurate monitoring of water quality. Such instrument usually includes a detection probe, a sampling container and a lifting mechanism or a fixed support, and the measurement is completed by immersing the probe into the water sample in the sampling container, which has the advantages of fast response speed and unattended operation, and plays an important role in environmental monitoring and pollution source supervision.

[0003] An existing water resource monitoring analyzer (such as CN220040418U) discloses the following technical scheme: a lifting mechanism composed of a servo motor, a worm, a worm gear and a lead screw is arranged on the instrument body, a sampling container is placed on the lifting plate, and a bidirectional screw driven by a manual hand wheel and a V-shaped positioning block are arranged on the lifting plate for centering and fixing containers of different specifications, and the detection probe is fixed on the mounting plate through a spring compression mechanism; during use, the centering and positioning are realized by manually adjusting the hand wheel, and then the motor is started to lift the lifting plate until the probe is immersed in the water sample, and the stopping position is judged by visual observation of the operator.

[0004] The above-mentioned prior art can adapt to sampling containers of different specifications to a certain extent, but still has obvious deficiencies: manual rotation of the hand wheel is required for centering, manual visual judgment of the lifting stopping time is required, which leads to low automation, complex operation, poor consistency of immersion depth (repeatability error is usually greater than ± 15mm); at the same time, due to the lack of reliable overload protection and residual liquid guiding structure, the phenomenon of probe hitting the bottom of the container or residual liquid dropping to contaminate the instrument body is easy to occur, the maintenance frequency is high after long-term operation, the measurement stability is poor, and it is difficult to meet the online monitoring requirements of true unattended operation. SUMMARY

[0005] This section aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification of the present application to avoid obscuring the purpose of this section, abstract and title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0006] In view of the above and / or existing problems in the prior art, the present application is proposed.

[0007] Therefore, the technical problem to be solved by the present application is how to provide a water resource monitoring analyzer to realize full-automatic accurate centering, automatic immersion positioning, automatic stopping, residual liquid drop pollution prevention and complete high-repetition measurement without human intervention, so as to overcome the defects of the prior art, such as dependence on manual adjustment, low automation, poor consistency of immersion depth, easy collision and pollution of the instrument body.

[0008] To solve the above technical problems, the present application provides the following technical scheme: a water resource monitoring analyzer, comprising an analyzer main body, a support plate is fixedly installed on the right side of the upper surface of the analyzer main body, a detection probe is clamped and fixed in the inside of the support plate, a reverse tapered positioning cover is fixedly arranged below the detection probe, the large opening of the reverse tapered positioning cover faces downward, the detection probe extends from the center thereof and extends by a fixed distance H from the lower end surface, a lifting mechanism is arranged on the left side of the support plate and the detection probe, the lifting mechanism comprises a lifting plate which is vertically movable and is arranged directly below the reverse tapered positioning cover, and a placing groove for placing a sampling container is formed in the upper surface of the lifting plate, and a torque limiter is connected in series in the transmission chain of the lifting mechanism, the torque limiter slips to automatically stop the lifting when the mouth of the sampling container is attached to the inner tapered surface of the reverse tapered positioning cover, so as to realize full-automatic adaptive immersion positioning of sampling containers of different specifications.

[0009] As a preferred scheme of the water resource monitoring analyzer of the present application, the right end of the analyzer main body is provided with a lifting groove, and the lifting plate is slidingly connected in the lifting groove.

[0010] As a preferred scheme of the water resource monitoring analyzer of the present application, the lifting mechanism further comprises a servo motor which is fixedly installed at the left end of the upper surface of the analyzer main body, the output shaft of the servo motor is in transmission connection with the input pivot in the torque limiter, the other end of the output pivot in the torque limiter is in transmission connection with a worm, the front side of the worm is in meshing connection with a turbine, the bottom end of the turbine is fixedly connected with a lead screw, the bottom end of the lead screw penetrates through the outer top wall of the analyzer main body and extends into the lifting groove, and the lifting plate is threadedly connected to the outer surface of the lead screw.

[0011] As a preferred scheme of the water resource monitoring analyzer of the present application, the torque limiter further comprises an outer friction plate which is sleeved on the input pivot and an inner friction plate which is sleeved on the output pivot, the opposite surfaces of the outer friction plate and the inner friction plate are respectively in abutment with an inner pressure disc, the opposite surfaces of the two inner pressure discs are respectively fixedly connected with a disc spring, the opposite surfaces of the two disc springs are respectively fixedly connected with an outer pressure disc, and the two groups of inner pressure discs, disc springs and outer pressure discs are respectively sleeved on the outer surfaces of the input pivot and the output pivot.

[0012] As a preferred scheme of the water resource monitoring analyzer, the outer surface of the input pivot is further sleeved with a left protective shell, the outer surface of the output pivot is further sleeved with a right protective shell, the left protective shell is fixed with the right protective shell through screws, and the outer friction plate, the inner friction plate, the inner pressure disc, the disc spring and the outer pressure disc are arranged in the two protective shells.

[0013] As a preferred scheme of the water resource monitoring analyzer, the outer surface of the left protective shell and the outer surface of the right protective shell are threadedly connected with fastening bolts, the inner ends of the fastening bolts extend into the protective shells and abut against the outer side surfaces of the corresponding outer pressure discs, the outer pressure discs are pushed to move axially inward by rotating the fastening bolts, the outer pressure discs extrude the disc springs, the disc springs extrude the inner pressure discs, and the inner pressure discs press the outer friction plate and the inner friction plate.

[0014] As a preferred scheme of the water resource monitoring analyzer, the inner side of the bottom end of the inverted conical positioning cover is provided with an annular liquid collecting groove.

[0015] As a preferred scheme of the water resource monitoring analyzer, the front end and the rear end of the lifting groove are symmetrically provided with sliding rails, the front end and the rear end of the lifting plate are symmetrically provided with rollers matched with the sliding rails, and the two rollers are rollingly connected in the two sliding rails.

[0016] As a preferred scheme of the water resource monitoring analyzer, the included angle between the conical surface of the inverted conical positioning cover and the horizontal plane is 20°-30°, preferably 25°, and the fixed distance H of the detection probe extending out of the lower end surface of the inverted conical positioning cover is 40mm-70mm, preferably 50mm-60mm.

[0017] As a preferred scheme of the water resource monitoring analyzer, the support plate and the detection probe are connected through a quick-release clamp or an eccentric wheel lever quick-clamp mechanism.

[0018] The beneficial effects of the present application are as follows: 1. Real full-automatic self-adaptive immersion is realized: the inverted conical positioning cover and the torque limiter are combined mechanically, different specifications of sampling containers are automatically and accurately centered and automatically stopped at the moment of fitting, manual handwheel centering and manual visual stopping are completely cancelled, the immersion depth error is reduced from ±15mm or more in the prior art to ±1.5mm or less, and the measurement repeatability and accuracy are improved by 5-10 times.

[0019] 2. Never head-on, zero residual drop: torque limiter slips instantaneously to cut off power, worm self-locking never downslide, completely eliminate the risk of probe hitting the bottom of the container or container overturning; inverted conical cover bottom ring liquid collection groove catches all residual liquid and guides it out, instrument body never touches liquid for life, completely solve the industry's stubborn problem of severe top fouling, corrosion and short circuit caused by residual liquid drop in existing technology. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them: Figure 1 It is a perspective view of the overall structure of the present application; Figure 2 It is a perspective side sectional view of the present application; Figure 3 It is a perspective front sectional view of the torque limiter of the present application; Figure 4 It is a perspective exploded view of the torque limiter of the present application; Figure 5 It is a perspective front sectional view of the connection between the detection probe, inverted conical positioning cover and fixed plate of the present application. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0022] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0023] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in this specification does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.

[0024] EMBODIMENT REFERENCE Figures 1-5The application provides a water resource monitoring analyzer, which comprises an analyzer main body 1, a supporting plate 2 fixedly installed on the right side of the upper surface of the analyzer main body 1, and a detection probe 3 connected between the supporting plate 2 and the detection probe 3 through a quick-release clamp or an eccentric wheel lever quick-clip mechanism, so that the detection probe 3 can be assembled and disassembled within 3 seconds only through one-hand operation without any tools, thereby greatly facilitating on-site cleaning, descaling and regular maintenance; a reverse taper positioning cover 4 is fixedly arranged below the detection probe 3, the reverse taper positioning cover 4 has a large opening downward, the included angle between the taper surface and the horizontal plane is 20°-30° (preferably 25°), the detection probe 3 extends from the center of the reverse taper positioning cover 4 and extends by a fixed distance H of 40mm-70mm (preferably 55mm) from the lower end surface, the structure can make any size sampling container with a caliber of 50mm-150mm be guided and accurately centered by the taper surface during the rising process and be firmly attached, and the immersion depth error is controlled within ±1.5mm; a ring-shaped liquid collecting groove 401 is further arranged in the inner side of the bottom end of the reverse taper positioning cover 4, a flow guide opening is arranged at the bottom of the liquid collecting groove 401, a soft pipe can be connected to the flow guide opening to directly introduce residual liquid into a waste liquid barrel, so that 100% of the residual liquid does not drip to the instrument body when the probe is pulled out, and the problems of body corrosion and salt scale after long-term operation are completely solved.

[0025] A lifting mechanism 5 is arranged on the left side of the supporting plate 2 and the detection probe 3, the lifting mechanism 5 comprises a lifting plate 501 located below the reverse taper positioning cover 4, a placing groove 501a is arranged on the upper surface of the lifting plate 501 and used for preventing the sampling container from overturning and providing preliminary positioning; a lifting groove 101 is arranged at the right end of the analyzer main body 1, slide rails 102 are symmetrically arranged at the front and rear ends of the lifting groove 101, rollers 501b are symmetrically installed at the front and rear ends of the lifting plate 501 and rollingly connected in the slide rails 102, so that the lifting plate 501 runs stably, without shaking and abnormal sound in the whole stroke; the power source of the lifting mechanism 5 is a servo motor 503 fixedly installed on the left end of the upper surface of the analyzer main body 1, the output shaft of the servo motor 503 is in transmission connection with an input pivot 502a in a torque limiter 502 through a key, the other end of an output pivot 502b in the torque limiter 502 is also connected with a worm 504 through a key, the front side of the worm 504 is engaged with a turbine 505, the bottom end of the turbine 505 is coaxially and fixedly connected with a lead screw 506, the bottom end of the lead screw 506 penetrates through the outer top wall of the analyzer main body 1 and extends into the lifting groove 101, and the lifting plate 501 is rigidly connected to the outer surface of the lead screw 506 through a threaded pair, thereby forming a typical worm gear self-locking lifting system, which has high transmission precision and can reliably keep any stop position from sliding down.

[0026] The torque limiter 502 internally adopts a multi-piece friction structure, comprising outer friction plates 502c (rotating with the input pivot 502a) and inner friction plates 502d (rotating with the output pivot 502b) alternately sleeved, the opposite surfaces of the outer friction plates 502c and the inner friction plates 502d are abutted with inner pressure plates 502e, the opposite surfaces of the two inner pressure plates 502e are fixedly connected with disc springs 502f respectively, the disc springs 502f are fixedly connected with an outer pressure plate 502g, and all the pressure plates and the disc springs are sleeved on the outer surfaces of the input pivot 502a and the output pivot 502b respectively; the input pivot 502a is sleeved with a left protective shell 502h, the output pivot 502b is sleeved with a right protective shell 502i, and the two shells are firmly locked by screws to form a fully-closed dustproof and waterproof cavity, so that the friction plates, the pressure plates and the disc springs are completely protected, and water vapor and acid-base vapor erosion leading to torque drift is avoided; the outer surfaces of the left protective shell 502h and the right protective shell 502i are threadedly connected with fastening bolts 502j, the inner ends of the fastening bolts 502j directly press the outer pressure plate 502g, and when the fastening bolts 502j are screwed, the outer pressure plate 502g, the disc springs 502f, the inner pressure plates 502e and the friction plates are sequentially pushed, so that the friction plate compression force is continuously adjustable, and thus the limiting torque is accurately adjustable in the range of 20-60 N·m, and the overload protection requirements of sampling containers of different weights and different materials are met.

[0027] The working principle of the present application is as follows: Firstly, the operator directly puts any specification of sampling container (with a caliber of 50-150 mm) containing water sample into the placing groove 501a of the lifting plate 501 without any manual centering or visual liquid level height measurement; after pressing the start key, the servo motor 503 rotates in the forward direction, the output shaft of the servo motor 503 directly drives the input pivot 502a in the torque limiter 502 to synchronously rotate through key connection, the input pivot 502a drives the outer friction plates 502c fixedly sleeved thereon to rotate, the outer friction plates 502c tightly press and drive the alternately sleeved inner friction plates 502d to rotate through friction force, and the inner friction plates 502d drive the output pivot 502b to synchronously rotate, so that the torque limiter 502 as a whole is in a rigid transmission state; the output pivot 502b continues to drive the worm 504 to rotate through key connection, the worm 504 and the turbine 505 are in high-precision meshing transmission, the turbine 505 is coaxially fixedly connected with the lead screw 506 and drives the lead screw 506 to rotate at a constant speed, and the lead screw 506 drives the lifting plate 501 to stably and linearly ascend along the slide rail 102 through a threaded pair; During the lifting of the lifting plate 501, the mouth of the sampling container first enters the large end of the inverted conical positioning cover 4, and even if the container is initially placed eccentrically, it will be passively guided and quickly and automatically accurately centered (centering error ≤0.5 mm) by the 20°-30° conical surface; the container continues to rise, and the outer edge of its mouth gradually closely adheres to the conical surface until it is completely adhered to form a large area of support, at which time the system resistance increases dramatically, the transmission torque instantaneously exceeds the preset value (20-60 N·m) of the torque limiter 502, the outer friction plate 502c and the inner friction plate 502d immediately slip relative to each other, the input end (motor side) idles while the output end (worm side) instantaneously loses power and stops transmission, due to the strong self-locking characteristics of the worm gear system, the lead screw 506 and the lifting plate 501 are accurately stopped at the current position, and never slide down or continue to rise, thereby realizing the mechanical insurance of never hitting the head, at this time the immersion depth of the detection probe 3 is fixed at the preset value H±1.5 mm, the immersion repeatability is extremely high, and is completely unaffected by the container size or the liquid volume; The detection process is automatically completed at this stable position, and the measurement is completed; after the detection is completed, the servo motor 503 is reversed, at which time the system load is only the weight of the sampling container, which is much lower than the set threshold of the torque limiter 502, the outer friction plate 502c and the inner friction plate 502d restore full friction, the torque limiter 502 reenters the rigid transmission state, and the power is smoothly transmitted in reverse to the worm 504-turbine 505-lead screw 506, so that the lifting plate 501 stably descends to the initial position; During the descending process, the probe 3 is gradually pulled out, the residual liquid in the sampling container and the liquid droplets on the surface of the probe flow into the annular liquid collection groove 401 at the bottom along the conical surface of the inverted conical positioning cover 4, and are discharged through the flow guide, realizing 100% residual liquid without dripping to the analyzer main body 1, and completely eliminating the pollution of the main body; The whole process is fully automated without human intervention, and the operator only needs to "put the bottle-press the key-take the bottle" three steps to complete a high-precision measurement, and truly realizes the full-automatic self-adaptive accurate immersion, automatic stop, zero residual liquid dripping, and high-reliability water quality online monitoring of different specifications of sampling containers. The actual measurement repeatability error is ≤±1.5 mm, the single measurement period is <30 seconds, and the long-term operation has zero failure rate, which is much ahead of traditional instruments.

[0028] It is important to note that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the spirit and scope of the application, as described in the claims (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc. and the like). For example, the position of elements can be reversed or otherwise varied and the nature or number of elements can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the spirit of the application. Any "apparatus" or "device" described herein can be embodied in many different forms and a "means" for performing any function described herein can include any of the apparatus or structures described herein. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described in the specification.

[0029] In addition, for purposes of brevity of description, it is not the intention of the

[0030] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0031] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application but not to limit the present application, and although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.

Claims

1. A water resources monitoring and analysis instrument, characterized in that: The analyzer includes a main body (1), a support plate (2) is fixedly installed on the right side of the upper surface of the main body (1), a detection probe (3) is fixedly snapped inside the support plate (2), an inverted conical positioning cover (4) is fixedly installed below the detection probe (3), the inverted conical positioning cover (4) has its large opening facing down, the detection probe (3) extends from its center and extends a fixed distance H from its lower end face, a lifting mechanism (5) is provided on the left side of the support plate (2) and the detection probe (3), the lifting mechanism (5) includes a lifting plate (501) located directly below the inverted conical positioning cover (4) and can move vertically, and the upper surface of the lifting plate (501) is provided with a placement slot (501a) for placing a sampling container, a torque limiter (502) is connected in series in the transmission chain of the lifting mechanism (5), when the mouth of the sampling container is in contact with the inner conical surface of the inverted conical positioning cover (4), the torque limiter (502) slips and the lifting stops automatically, realizing fully automatic adaptive immersion positioning of sampling containers of different specifications.

2. The water resources monitoring and analysis instrument as described in claim 1, characterized in that: The right end of the analyzer body (1) is provided with a lifting groove (101), and the lifting plate (501) is slidably connected in the lifting groove (101).

3. The water resources monitoring and analysis instrument as described in claim 2, characterized in that: The lifting mechanism (5) further includes a servo motor (503) fixedly installed on the left end of the upper surface of the analyzer body (1). The output shaft of the servo motor (503) is connected to the input pivot (502a) in the torque limiter (502). The other end of the output pivot (502b) in the torque limiter (502) is connected to a worm gear (504). The front side of the worm gear (504) is meshed with a turbine (505). The bottom end of the turbine (505) is fixedly connected to a lead screw (506). The bottom end of the lead screw (506) penetrates the outer top wall of the analyzer body (1) and extends into the lifting groove (101). The lifting plate (501) is threadedly connected to the outer surface of the lead screw (506).

4. The water resources monitoring and analysis instrument as described in claim 3, characterized in that: The torque limiter (502) further includes an outer friction plate (502c) sleeved on the input pivot (502a) and an inner friction plate (502d) sleeved on the output pivot (502b). The opposite sides of the outer friction plate (502c) and the inner friction plate (502d) abut against an inner pressure plate (502e). The opposite sides of the two inner pressure plates (502e) are fixedly connected to disc springs (502f). The opposite sides of the two disc springs (502f) are fixedly connected to outer pressure plates (502g). The two sets of inner pressure plates (502e), disc springs (502f) and outer pressure plates (502g) are respectively sleeved on the outer surfaces of the input pivot (502a) and the output pivot (502b).

5. The water resources monitoring and analysis instrument as described in claim 4, characterized in that: The outer surface of the input pivot (502a) is also fitted with a left protective shell (502h), and the outer surface of the output pivot (502b) is also fitted with a right protective shell (502i). The left protective shell (502h) is fixed to the right protective shell (502i) by screws, and the outer friction plate (502c), inner friction plate (502d), inner pressure plate (502e), disc spring (502f) and outer pressure plate (502g) are all arranged inside the two protective shells.

6. The water resources monitoring and analysis instrument as described in claim 5, characterized in that: Both the outer surfaces of the left protective shell (502h) and the right protective shell (502i) are threaded with fastening bolts (502j). The inner end of the fastening bolt (502j) extends into the protective shell and abuts against the outer surface of the corresponding outer pressure plate (502g). By tightening the fastening bolt (502j), the outer pressure plate (502g) is pushed to move axially inward. The outer pressure plate (502g) compresses the disc spring (502f), and the disc spring (502f) then compresses the inner pressure plate (502e). The inner pressure plate (502e) presses the outer friction plate (502c) and the inner friction plate (502d) together.

7. The water resources monitoring and analysis instrument as described in claim 6, characterized in that: The inner side of the bottom of the inverted conical positioning cover (4) is provided with an annular liquid collection groove (401).

8. The water resources monitoring and analysis instrument as described in claim 7, characterized in that: The lifting groove (101) has symmetrically provided slide rails (102) at both ends, and the lifting plate (501) has symmetrically provided rollers (501b) adapted to the slide rails (102) at both ends, and the two rollers (501b) are tumblingly connected in the two slide rails (102).

9. The water resources monitoring and analysis instrument as described in claim 8, characterized in that: The angle between the conical surface of the inverted conical positioning cover (4) and the horizontal plane is 20° to 30°; the fixed distance H from the detection probe (3) extending out of the lower end face of the inverted conical positioning cover (4) is 40mm to 70mm.

10. The water resources monitoring and analysis instrument as described in claim 9, characterized in that: The support plate (2) and the detection probe (3) are connected by a quick-release clamp or an eccentric wheel lever quick-clamp mechanism.

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