CN201289441Y - Fixed point liquor sampler - Google Patents

Abstract

The utility model relates to water quality monitoring equipment, and proposes a fixed-point liquid sampler, which has a water collection bucket with a detachable top cover on the upper part of the water collection bucket, a positioning rope tied to the lifting beam of the top cover, and an air outlet in the center of the top cover. There is a water inlet pipe in the center of the bottom of the water collection bucket, and the feature is that a limit sleeve is connected to the exhaust port of the top cover, and there are vent holes around the limit sleeve, and a sealing opening device passes through the limit sleeve , the exhaust port in the center of the top cover, the water collection bucket and the water inlet pipe at the bottom, and a traction rope tied to the sealing opening device. The utility model has the advantages that: 1. The sampler starts sampling when it reaches the specified position, and the sampling point position and sampling time can be arbitrarily controlled to realize fixed-point sampling. 2. The water inlet is separated from the exhaust port to avoid the interference of the overflow gas on the sample during the sampling process. 3. O-shaped rubber is used, which has good sealing performance. 4. The opening of the sampler is not affected by the water depth. 5. The structure is simple to operate, easy to clean and maintain.

Description

Spot Liquid Sampler

technical field

The utility model relates to the field of water quality monitoring equipment, in particular to a liquid fixed-point sampler.

Background technique

At present, the sampler with upper and lower double covers is widely used. The bottom of the sampler is provided with a water inlet cover, and the top is provided with a drain cover. When the sampler is put into the water, the sampler sinks freely by gravity, the liquid pushes open the water inlet cover at the bottom, the water sample enters the sampler, the gas inside the sampler is pressurized and the drain cover is opened, and the gas is discharged; the sampler continues to descend Sinking, the water sample continuously enters the sampler, and the newly entered water sample pushes the water sample in the sampler to move as a piston to the drain outlet; after reaching the sampling point, the sampler stops moving, and the water sample at the sampling point just replaces the water sample in the sampler. The drain cover and water inlet cover are closed by their own gravity to complete the sampling process. This kind of sampler assumes that the sinking speed of the sampler is equal to the sampling speed, but: (1) when the actual sampler is working, the sinking speed is greater than the sampling speed, so the water in the sampler is not completely replaced by the water at the monitoring point. The water sample collected was not the water sample at the monitoring point; (2) The sampling principle of the sampler determines that the sampled water sample is a mixed water sample within the height range of the sampler; (3) The sealing effect of the sampler is poor, and water seepage and leakage are serious; (4) ) The sampler is an integrated design, which is not conducive to cleaning and maintenance.

In recent years, various liquid samplers have been invented and created according to the characteristics of sampling in different fields. Fully automatic sampler, high degree of automation, complex auxiliary equipment, high cost, difficult maintenance; sampler designed according to mechanical and mechanical principles, complex structure and operation, bulky; other samplers (such as negative pressure water quality sampler) in Before reaching the sampling point, water samples enter the sampling system, making it difficult to achieve accurate fixed-point sampling.

Utility model content

The purpose of the utility model is to provide a fixed-point liquid sampler, which can realize fixed-point sampling, has a simple structure, is easy to operate, and is low in cost.

The technical scheme adopted in the utility model is:

The fixed-point liquid sampler has a water collection bucket with a detachable top cover on the upper part of the water collection bucket. A lifting beam is fixed on the top cover, and a positioning rope is tied to the lifting beam. There is an air outlet in the center of the top cover, and a water inlet in the center of the bottom of the water collection bucket. The tube is characterized in that: a limit sleeve is connected to the exhaust port of the top cover, and there are vent holes around the limit sleeve, and a sealing opening device passes through the limit sleeve and the exhaust port in the center of the top cover. , the water collection barrel and the water inlet pipe at the bottom, the seal opening device has a guide rod, the upper end of the guide rod is fixed with a first O-shaped sealing rubber ring in the limit sleeve, and a second O-shaped sealing rubber ring is fixed at the water inlet pipe. O-shaped sealing rubber ring and a return spring are installed in the limit sleeve and connected with the guide rod. The lower end of the guide rod is provided with a limit card, and a traction rope is tied on the seal opening device.

Various optimization designs can also be made as follows:

A counterweight is installed at the bottom of the bucket;

There is a scale engraved on the positioning rope;

There is an O-shaped sealing rubber between the water collection bucket and the top cover;

The water collection bucket, cover plate and limit sleeve are all made of transparent plastic materials;

Guide rods, return springs and fixtures are all made of stainless steel.

The top cover, carrying beam, guide rod, return spring and O-shaped sealing rubber can be disassembled, which is convenient for cleaning and maintenance of the sampler.

Compared with the prior art, the utility model has the advantages of:

1. The sampler starts sampling when it reaches the specified position, and the sampling point position and sampling time can be controlled arbitrarily to realize fixed-point sampling.

2. The water inlet is separated from the exhaust port to avoid the interference of the overflow gas on the sample during the sampling process.

3. O-type rubber is used, which has good sealing performance.

4. The opening of the sampler is not affected by the water depth.

5. The structure is simple to operate, easy to clean and maintain.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the pedal in use state of Fig. 1 .

In the figure: 1-Water collection bucket, 2-Top cover, 21-Exhaust port, 3-Lift beam, 4-Positioning rope, 5-Limiting sleeve, 51-Vent hole, 6-Limiting cylinder, 7-Traction Rope, 8-water inlet pipe, 9-O-type sealing rubber, 10-guide rod, 11-first O-type sealing rubber, 12-second O-type sealing rubber, 13-return spring, 14-limit card, 15 -Counterweight.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in the figure, a feasible embodiment of the utility model, a fixed-point liquid sampler, has a water collection bucket (1), and the upper part of the water collection bucket (1) has a detachable top cover (2), and the top cover (2) is A lifting beam (3) is fixed, a positioning rope (4) is tied on the lifting beam (3), an air outlet (21) is opened in the center of the top cover (2), and a limit sleeve (5) is connected to the top cover (1 ) at the exhaust outlet (21), the limit sleeve (5) is surrounded by an exhaust hole (51), and the center of the bottom of the water collection bucket (1) is provided with a water inlet pipe (8), and a sealed opening device passes through the limit The position sleeve (5), the exhaust port (21) at the center of the top cover, the water collection bucket (1) and the water inlet pipe (8) at the bottom thereof, the described sealing opening device has a guide rod (10), and the guide rod (10) The upper end is fixed with the first O-shaped sealing rubber ring (11) in the limit sleeve (5), the second O-shaped rubber ring (12) is fixed at the water inlet pipe (8), and a return spring (13) be installed in the limit sleeve (5) and be connected with guide rod (10), the lower end of guide rod (10) is provided with limit card (14), is tied with traction rope (7) above the sealing opening device.

When in use, the utility model is put into the water at the designated position through the positioning rope (4) to collect water samples. The rubber ring (11) is in the limit sleeve (5) and the second O-shaped sealing rubber ring (12) is in the water inlet pipe (8), seal the water collection bucket (1), and pull the traction after reaching the sampling position Rope (7), at this time the guide rod (10) moves upward and is limited by the positioning cylinder (6), at this time, the second O-shaped sealing rubber ring (12) leaves the water inlet pipe (8), and the first O-shaped sealing The rubber ring (11) moves up to the vent hole (51) of the limiting sleeve (5), and the vent hole (51) communicates with the water collecting barrel (1) through the limiting sleeve (5), so that the liquid Enter the water collection bucket (1) from the water inlet pipe (8), and the gas in the water collection bucket (1) is discharged from the exhaust port (51) on the limit sleeve (5). After the sampling operation is completed, loosen the traction rope (7), the seal opening device returns to the normal state under the action of the return spring (13), and the water sample collected in the water collection bucket (1) is sealed.

The positioning rope (4) is provided with a scale, which can visually monitor the sinking depth of the sampler, thereby determining the position of the sampling point.

A counterweight (15) is provided at the bottom of the water collecting bucket (1), so that the sampler can sink under no-load conditions; offsetting the tension of the return spring (13) and the buoyancy of the sampler makes it easy to open the water inlet pipe of the sampler ( 8) and exhaust port (51). The counterweight (15) can also be omitted if the water collecting bucket (1) itself has enough weight to realize such an effect.

Water collection bucket (1) is made of transparent plastic material, is convenient to the observation of water sample.

In order to avoid corrosion of the sample to the sampler and affect the life of the sampler and the quality of the sample, the guide rod (10), the return spring (13) and the fixing parts are all made of stainless steel.

Claims (6)

1. fixed point Liquid sampler, one dust-collecting bucket (1) is arranged, removable top (2) is arranged at dust-collecting bucket (1) top, be fixed with bale handle (3) on the top cover (2), one positioning rope (4) lies on the bale handle (3), top cover (2) central authorities have exhausr port (21), dust-collecting bucket (1) bottom centre is provided with water inlet pipe (8), it is characterized in that: a spacing collar (5) is connected in the exhausr port (21) of top cover (1) and locates, spacing collar (5) has vent port (51) all around, one unseal device passes spacing collar (5), the exhausr port of top cover central authorities (21), the water inlet pipe (8) of dust-collecting bucket (1) and bottom thereof, described unseal device has a guide rod (10), there is an O type sealing rubber ring (11) guide rod (10) upper end in spacing collar (5) internal fixation, locate to be fixed with the 20 type sealing rubber ring (12) in water inlet pipe (8), one back-moving spring (13) is installed in the spacing collar (5) and is connected with guide rod (10), the lower end of guide rod (10) is provided with spacing card (14), and above the unseal device being has traction rope (7).

2. the Liquid sampler of fixing a point described in claim 1 is characterized in that: balancing weight (15) is equipped with in dust-collecting bucket (1) bottom.

3. fixed point Liquid sampler as claimed in claim 1 is characterized in that: described positioning rope is carved with scale on (4).

4. fixed point Liquid sampler as claimed in claim 1 is characterized in that: between described dust-collecting bucket (1) and the top cover (2) O type caulking gum (9) is arranged.

5. as fixed point Liquid sampler as described in claim 1 or 2 or 3 or 4, it is characterized in that dust-collecting bucket (1), cover plate (2) and spacing collar (3) all adopt transparent plastic material to make.

6. the Liquid sampler of fixing a point described in claim 1 or 2 or 3 or 4 is characterized in that guide rod (10), back-moving spring (13) and fixture all adopt stainless steel material to make.

Images